TECHNICAL FIELD

The present invention relates to the technical field of tissue closure, and particularly to a tissue closure device.

BACKGROUND OF THE INVENTION

During surgery, a surgeon generally needs to use a tissue closure instrument to perform suturing on a wound to be sutured of a patient, such as an incision of the abdominal cavity.

Performing suturing with an existing tissue closure instrument requires using a puncture needle to pierce through the skin and tissue to enter the abdominal cavity. For example, the surgeon needs to pierce a puncture needle from one side to a puncture position, pull out the puncture needle, and then pierce the puncture needle from the other side to the puncture position, so as to arrange a suture in position and complete suturing.

However, the existing tissue closure instrument is not easy to assemble. Additionally, in actual operation, due to differences between individuals, when a puncture needle penetrates from the outside into the abdominal cavity, a shift in puncture position may occur, which may affect the effect of healing a wound.

BRIEF SUMMARY

An objective of the present invention is to increase the ease of assembling a tissue closure device, so that a suture needle can be stably and reliably accommodated in a suture needle channel of a tube body, and can move stably and reliably along the suture needle channel, thereby improving the safety of a surgical procedure.

In order to achieve the objective described above, provided in the present invention is a tissue closure device, comprising: a tube body, comprising two half tube portions that can be combined, a half suture needle channel groove being formed on a combining surface of each half tube portion, each suture needle channel groove comprising a curved groove segment, wherein when the two half tube portions combine to form the tube body, the half suture needle channel groove on one of the half tube portions and the half suture needle channel groove on the other half tube portion combine to form a suture needle channel, wherein the curved groove segment forms a curved channel segment of the suture needle channel, and a needle outlet channel is formed on each half tube portion; a suture needle, located in the suture needle channel; and a needle operating member, disposed on the tube body and capable of moving between an initial needle position and a needle-fired position, wherein the needle operating member can drive the suture needle to extend obliquely out of the needle outlet channel to a puncture position, and can allow the suture needle to retract into the needle outlet channel.

In the tissue closure device, a half suture needle channel groove is formed on a combining surface of each half tube portion, and each suture needle channel groove comprises a curved groove segment. When the two half tube portions combine to form the tube body, the half suture needle channel groove on one of the half tube portions and the half suture needle channel groove on the other half tube portion combine to form a suture needle channel. In this manner, a desired shape of the suture needle channel can be easily formed. Additionally, during assembly, the suture needle and the needle operating member may be placed on one of the half tube portions, and then the other half tube portion is combined with and connected to the half tube portion. In this manner, the suture needle is stably and reliably accommodated in the suture needle channel of the tube body and can move stably and reliably along the suture needle channel, and the needle operating member is easily located in the tube body, thereby increasing the ease of assembling the tissue closure device. Additionally, guiding the suture needle through the suture needle channel enables the suture needle to move stably and prevents a shift in puncture position, thereby improving the healing effect of suturing a wound.

In some embodiments, the combining surface of each half tube portion comprises a curved surface segment, and the curved groove segment is formed on the curved surface segment and extends in a curved surface direction.

In some embodiments, a plurality of independent half suture needle channel grooves are formed on the combining surface of each half tube portion, and when the two half tube portions combine to form the tube body, the plurality of half suture needle channel grooves on one of the half tube portions and the plurality of half suture needle channel grooves on the other half tube portion respectively combine to form a plurality of suture needle channels, wherein the plurality of suture needles are respectively located in the suture needle channels, and the needle operating member can drive the plurality of suture needles to move simultaneously to extend obliquely out of the needle outlet channels to a puncture position simultaneously, and can allow the plurality of suture needles to retract simultaneously into the respective needle outlet channels. In some embodiments, each suture needle channel groove comprises a straight groove segment, and the straight groove segments combine to form a straight channel segment of the suture needle channel.

In some embodiments, an end of the curved channel segment is used as the needle outlet channel.

In some embodiments, the needle operating member is disposed at a proximal end position of the tube body, and a manual operation portion of the needle operating member extends out of a proximal end port of the tube body.

In some embodiments, the needle operating member can move between the initial needle position and the needle-fired position in an axial direction of the tube body.

In some embodiments, a movement guide structure is disposed between the needle operating member and the tube body.

In some embodiments, the movement guide structure comprises a guide slot extending axially on an exterior surface of the needle operating member and a half guide bump on each of the two half tube portions, and the two half guide bumps combine and mate with the guide slot.

In some embodiments, the plurality of suture needles are directly connected to the needle operating member.

In some embodiments, a plurality of needle insertion holes spaced apart from each other are formed on a distal end surface of the needle operating member, the plurality of needle insertion holes extend towards a proximal end of the needle operating member, a radial hole communicating with the plurality of needle insertion holes is formed on the needle operating member, and a lock pin is inserted in the radial hole, wherein ends of the plurality of suture needles are inserted in the respective needle insertion holes, and are locked by and mate with the lock pin simultaneously.

In some embodiments, after the suture needle, the needle operating member, a driving member, and a driving rod of the tissue closure device are disposed on one of the half tube portions, the other half tube portion is combined with the half tube portion, so as to dispose the suture needle, the needle operating member, the driving member, and the driving rod in the tube body, wherein the driving member drives, via the driving rod, a stabilizing member at a distal end of the tissue closure device to close up or expand. In some embodiments, the tissue closure device further comprises a driving member disposed in the tube body and capable of moving between an initial stabilizing member position in which a stabilizing member at a distal end of the tissue closure device is driven to close up and a stabilizing member-fired position in which the stabilizing member at the distal end of the tissue closure device is driven to expand.

In some embodiments, when in the initial needle position, the needle operating member allows the driving member to switch between the initial stabilizing member position and the stabilizing member-fired position, and when in the needle-fired position, the needle operating member stops the driving member from returning from the stabilizing member-fired position to the initial stabilizing member position.

In some embodiments, the driving member can move between the initial stabilizing member position and the stabilizing member-fired position in the axial direction of the tube body.

In some embodiments, an axial channel is formed on the driving member, and the suture needle passes through the axial channel corresponding thereto.

In some embodiments, the tissue closure device further comprises a driving rod located in the tube body, a proximal end of the driving rod being directly connected to the driving member, and a distal end of the driving rod extending out of a distal end of the tube body so as to connect with the stabilizing member.

In some embodiments, an axially extending central hole is formed on a distal end surface of the driving member, a radial channel communicating with the central hole is formed on the driving member, and a locking shaft is disposed in the radial channel, wherein the proximal end of the driving rod is inserted in the central hole, and is locked by and mates with the locking shaft.

In some embodiments, a half driving rod channel groove is formed on each half tube portion, and when the two half tube portions combine to form the tube body, the half driving rod channel groove on one of the half tube portions and the half driving rod channel groove on the other half tube portion combine to form a driving rod accommodating channel, the driving rod being disposed in the driving rod accommodating channel in an axially movable manner.

In some embodiments, an engagement opening and a driving opening axially spaced apart from each other are formed on each half tube portion, wherein the driving member comprises a stopper and a driving portion axially spaced apart from each other, wherein the driving portion is located in the driving opening, wherein when the stopper engages in the engagement opening, the driving member is in the initial stabilizing member position, wherein when the stopper engages in the driving opening, the driving member is in the stabilizing member-fired position.

In some embodiments, when in the needle-fired position, the needle operating member stops the stopper from disengaging from the driving opening, so as to stop the driving member from returning from the stabilizing member-fired position to the initial stabilizing member position.

In some embodiments, the driving member comprises a suspension arm, wherein the stopper and the driving portion are disposed on the suspension arm, and the stopper is located at a proximal end of the suspension arm.

In some embodiments, an axially extending groove is formed on the needle operating member, wherein when the needle operating member moves axially to the initial needle position, the suspension arm is located outside the groove, wherein when the needle operating member moves axially to the needle-fired position, the suspension arm slides into the groove.

BRIEF DESCRIPTION OF DRAWINGS

To better understand the above and other objectives, features, advantages, and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. The same or similar reference numerals in the accompanying drawings refer to the same or similar components. It should be understood by those skilled in the art that the drawings are intended to schematically illustrate the preferred embodiments of the invention and have no limitation on the scope of the invention, and various members are not drawn to scale.

FIG. 1 is a schematic perspective structural view of a state of a tissue closure device according to a specific embodiment of the present invention, wherein a needle operating member is in a needle-fired position, and a stabilizing member is in an expanded position.

FIG. 2 is a schematic perspective structural view of another state of the tissue closure device in FIG. 1, wherein the needle operating member is in an initial needle position, and the stabilizing member is in a closed-up position.

FIG. 3 is a perspective structural view of the tissue closure device in FIG. 1 from which a tube body has been removed. FIG. 4 is a perspective structural view of the tissue closure device in FIG. 2 from which a tube body has been removed.

FIG. 5 is a perspective structural view of the tissue closure device in FIG. 1 from which one half tube portion of the tube body has been removed.

FIG. 6 is a schematic perspective structural view of another viewing angle of FIG. 5.

FIG. 7 is a perspective structural view of the tissue closure device in FIG. 2 from which one half tube portion of the tube body has been removed.

FIG. 8 is a schematic cross-sectional structural view of a position of the tissue closure device in FIG. 1.

FIG. 9 is a schematic perspective structural view of a viewing angle of the needle operating member of the tissue closure device in FIG. 1.

FIG. 10 is a schematic perspective structural view of another viewing angle of the needle operating member in FIG. 9.

FIG. 11 is a schematic perspective structural view of a viewing angle of a driving member of the tissue closure device in FIG. 1.

FIG. 12 is a schematic perspective structural view of another viewing angle of the driving member in FIG. 11.

FIG. 13 is a schematic perspective structural view of a viewing angle of one half tube portion of the tube body of the tissue closure device in FIG. 1.

FIG. 14 is a schematic perspective structural view of a viewing angle of two half tube portions of the tube body of the tissue closure device in FIG. 1.

FIG. 15 is an exploded state view of mating of the needle operating member of the tissue closure device in FIG. 1 with a suture needle .

FIG. 16 is a partial schematic structural view of mating of the needle operating member of the tissue closure device in FIG. 1 together with a suture needle, a driving member, and a driving rod.

FIG. 17 is a schematic view of a first type of needle tip protection structure of a tissue closure device according to a specific embodiment of the present invention, wherein a protection plate is in a blocking position. FIG. 18 is a schematic structural side view of FIG. 17.

FIG. 19 is a perspective view of the protection plate of the needle tip protection structure in FIG. 17 in a retracted position.

FIG. 20 is a schematic structural side view of FIG. 19.

FIG. 21 is a schematic view of a second type of needle tip protection structure of a tissue closure device according to a specific embodiment of the present invention, wherein a protection plate is in a blocking position.

FIG. 22 is a schematic view of a third type of needle tip protection structure of a tissue closure device according to a specific embodiment of the present invention, wherein a protection plate is in a blocking position.

FIG. 23 is a perspective view of the protection plate in FIG. 22, wherein the protection plate is in a natural state, i.e., in a retracted position.

FIG. 24 is a perspective view of the stabilizing member in FIG. 22.

FIG. 25 is a perspective view of another protection plate, wherein the protection plate is in a natural state, i.e., in a retracted position.

FIG. 26 is a perspective view of another protection plate, wherein the protection plate is in a natural state, i.e., in a retracted position.

FIG. 27 is a perspective view of another protection plate, wherein the protection plate is in a natural state, i.e., in a retracted position.

FIG. 28 is a perspective view of another protection plate, wherein the protection plate is in a natural state, i.e., in a retracted position.

FIG. 29 is a perspective view of another protection plate, wherein the protection plate is in a natural state, i.e., in a retracted position.

FIG. 30 is partial structural view of a tube body of a tissue closure device according to a specific embodiment of the present invention, and shows a suture arrangement notch.

FIG. 31 is a partial structural view of another viewing angle of the tube body in FIG. 30, and shows the suture arrangement notch.

FIG. 32 is a schematic structural side view of the tube body in FIG. 30.

FIG. 33 is a schematic structural view showing an interior suture needle. FIG. 34 is partial structural view of a tube body of a tissue closure device according to a specific embodiment of the present invention, and shows another suture arrangement notch.

FIG. 35 is partial structural view of a tube body of a tissue closure device according to a specific embodiment of the present invention, and shows a suture arrangement structure.

Description of the Reference Numerals

1 - tube body, 2 - needle outlet channel, 3 - suture needle, 4 - stabilizing member, 5 - needle operating member, 6 - driving member, 7 - needle tip protection structure, 8 - manual operation portion, 9 - guide slot, 10 - guide bump, 11 - needle insertion hole, 12 - radial hole, 13 - lock pin, 14 - suture needle channel, 15 - straight groove segment, 16 - curved groove segment, 17 - half tube portion, 18 - suture needle channel groove, 19 - driving rod, 20 - central hole, 21 - radial channel, 22 - locking shaft, 23 - driving rod channel groove, 24 - driving rod accommodating channel, 25 - engagement opening, 26 - driving opening, 27 - stopper, 28 - driving portion, 29 - suspension arm, 30 - guide groove, 31 - suture arrangement notch, 32 - inlet segment, 33 - holding gap, 34 - suture exit notch, 35 - elastic block, 36 - suture arrangement slot, 37 - protection protrusion, 38 - grid-shaped protrusion, 39 - suture fixing portion, 40 - suture hanging port, 41 - axial channel, 42 - protection plate, 43 - spring, 44 - engagement slot, 45 - engagement edge, 46 - protection surface, 47 - accommodation cavity, 48 - suture pressing block.

DETAILED DESCRIPTION

In the following detailed description of the embodiments, illustration is provided with reference to the accompanying drawings that constitute a part of the description. The accompanying drawings illustrate, by means of examples, specific embodiments, and the present invention is implemented in these embodiments. The illustrated embodiments are not intended to be exhaustive embodiments of the present invention. It will be appreciated that other embodiments may be utilized, and structural or logical changes may be made without departing from the scope of the present invention. For the drawings, directional terms such as “lower,” “upper,” “left,” and “right” are used with reference to the orientation of the drawings described. Since the components of the embodiments of the present invention can be implemented in a variety of orientations, these directional terms are for illustrative purposes, rather than restrictive purposes. Therefore, the following specific embodiments are not intended to set limitations, and the scope of the present invention is defined by the appended claims. Additionally, in the present invention, the phrase “proximal end” mentioned below refers to the end of the tissue closure device in use facing an operator, and the phrase “distal end” refers to the end of the tissue closure device in use disposed away from operation.

Referring to FIG. 1 to FIG. 4, a tissue closure device provided in a specific embodiment of the present invention includes a tube body 1, a plurality of suture needles 3, and a needle operating member 5. A plurality of needle outlet channels 2 are formed on the tube body 1. The plurality of suture needles 3 are located in the tube body 1. The needle operating member 5 is disposed on the tube body 1, and can move between an initial needle position and a needle- fired position. The needle operating member 5 can drive the plurality of suture needles 3 to move simultaneously to extend obliquely out of the respective corresponding needle outlet channels 2 to a puncture position simultaneously. The needle operating member 5 allows the plurality of suture needles 3 to move simultaneously to retract simultaneously into the respective corresponding needle outlet channels 2.

In the tissue closure device, the needle operating member 5 can drive the plurality of suture needles 3 to move simultaneously to extend obliquely out of the needle outlet channels 2 simultaneously, pass through tissue, and then move to the puncture position. In this manner, the needle operating member 5 can drive the plurality of suture needles 3 to the puncture position all at once, so that consistency and symmetry of the puncture position can be improved, thereby preventing a shift in puncture position and improving the safety of performing suturing in a surgical procedure.

Additionally, in the tissue closure device, in some embodiments, the plurality of suture needles may be directly located in an interior cavity of the tube body 1, and the needle operating member 5 can drive the plurality of suture needles 3 via another possible structure to extend obliquely out of the needle outlet channels 2 simultaneously. Alternatively, in some other embodiments, referring to FIG. 8, a plurality of independent suture needle channels 14 are disposed in the tube body 1. Each suture needle 3 can be movably located in the respective suture needle channel 14. Each suture needle channel 14 includes a curved channel segment. In this manner, the suture needle 3 can bend along the curved channel segment, so that the plurality of suture needles 3 can extend obliquely out of the respective corresponding needle outlet channels 2 to the puncture position simultaneously. In this manner, by means of the suture needle channel 14, the suture needle 3 can more stably and reliably extend out of the needle outlet channel 2 or retract into the tube body 1 in a desired movement path. Additionally, the curved channel segment can also further ensure that the suture needle 3 can extend out of the needle outlet channel 2 to the predetermined puncture position at a desired tilt angle.

Additionally, in the tissue closure device, the suture needle 3 is flexible and easily bendable. In this manner, due to restriction of the shape of the suture needle channel 14, the plurality of suture needles 3 can be driven by the needle operating member 5 to reach the puncture position. In some embodiments, referring to FIG. 3, FIG. 6, and FIG. 8, when the plurality of suture needles 3 are arranged in a spatially staggered manner, connecting lines between distal ends of the plurality of suture needles 3 are substantially located on a lateral (radial) centerline of the tissue closure device. In this manner, the consistency and symmetry of the puncture position of the tips of the suture needles can be further precisely controlled.

Additionally, the curved channel segment may have any shape that allows for movement of the suture needle 3, or may be located in any desired position on the suture needle channel 14. For example, the suture needle channel 14 may include a plurality of curved channel segments located in desired positions. For example, the suture needle channel 14 may be formed by sequentially connecting a plurality of identical or different curved segments.

Additionally, in the tissue closure device, in order to improve the smoothness of the movement of the suture needle 3 and to allow an operator to operate the suture needle 3 easily, in some embodiments, referring to FIG. 5 to FIG. 7, each suture needle channel 14 includes a straight channel segment and a curved channel segment. In this manner, the straight channel segment enables the suture needle 3 to move easily in the suture needle channel 14, and the curved channel segment enables the plurality of suture needles to extend obliquely out of the respective corresponding needle outlet channels 2 to the puncture position. For example, in some embodiments, the curved channel segments arranged in a spatially staggered manner enable the plurality of suture needles to extend obliquely out of the respective corresponding needle outlet channels 2 to the puncture position in a spatially staggered manner.

Additionally, in the tissue closure device, in some embodiments, the straight channel segment and the curved channel segment may be located on the same side of the tube body 1. For example, on a cross section of the tube body 1, the straight channel segment is provided close to an edge of the tube body 1, and the curved channel segment is provided to extend at the edge on the same side. Alternatively, in some other embodiments, referring to FIG. 14, in a radial direction of the tube body 1, the straight channel segment is located on one side of the tube body 1, and the curved channel segment extends from the said side of the tube body 1 to the other side. One end of the curved channel segment is used as the needle outlet channel 2 or communicates with the needle outlet channel 2. In this manner, the interior of the tube body 1 can be fully utilized to reasonably arrange the suture needle channels 14, so that the needle operating member 5 can easily drive the plurality of suture needles 3 (e.g., two suture needles 3 as shown) to move. For example, in FIG. 3 to FIG. 8, two suture needle channels 14 are arranged in a spatially staggered manner. For example, the two suture needle channels 14 are symmetrically arranged relative to the center of the tube body 1.

Additionally, in the tissue closure device, there may be a plurality of types of the tube body 1. For example, in some embodiments, the tube body 1 may be an integral member that is injection molded. Alternatively, in some other embodiments, the tube body 1 may be formed by combining a plurality of members. In this manner, the suture needle channel 14 for arranging the suture needle is easily formed. For example, in some embodiments, the tube body 1 may include a plurality of tube segments. At least some tube segments have axial channels corresponding thereto. The plurality of tube segments may be sequentially connected in an axial direction to form one tube body, and a plurality of axial channels communicate with each other to form a suture needle channel 14. In some other embodiments, referring to FIG. 1, FIG. 13, and FIG. 14, the plurality of members include two half tube portions 17. That is, the tube body 1 includes two half tube portions 17 that can be combined. A desired number of half suture needle channel grooves (e.g., one half suture needle channel groove 18 or a plurality of half suture needle channel grooves 18 independent of each other) are formed on each half tube portion 17. When the two half tube portions 17 combine to form the tube body 1 (for example, the plurality of half suture needle channel grooves 18 on one of the half tube portions 17 and the plurality of half suture needle channel grooves 18 on the other half tube portion 17 respectively combine to form a plurality of suture needle channels 14), the two half tube portions 17 may be connected to each other via bonding, engagement, hot melting, or other methods. By means of such two half tube portions 17, a desired shape of the suture needle channel 14 can be easily formed. Certainly, in other embodiments, the plurality of members may be three or four tube members. That is, the cross section of the tube body 1 is divided into three or four parts.

For example, in some embodiments, during assembly, the suture needle 3 and the needle operating member 5 may be placed on one of the half tube portions 17, and then the other half tube portion 17 is combined with and connected to the half tube portion 17. In this manner, the suture needle 3 is stably and reliably accommodated in the suture needle channel 14 of the tube body and can move stably and reliably along the suture needle channel, and at least part of the needle operating member 5 is easily located in the tube body, thereby increasing the ease of assembling the tissue closure device. Additionally, guiding the suture needle 3 through the suture needle channel 14 enables the suture needle to move stably and prevents a shift in puncture position, thereby improving the healfing effect of suturing a wound.

Additionally, in some embodiments, each suture needle channel groove 18 includes straight groove segments 15 located on one side in the radial direction of the tube body 1 and curved groove segments 16 extending from the said side to the other side. In this manner, the straight groove segments 15 may combine to form a straight channel segment, and the curved groove segments may combine to form a curved channel segment. In some embodiments, referring to FIG. 5 to FIG. 7, FIG. 13, and FIG. 14, the combining surface of each half tube portion 17 includes a curved surface segment. The curved groove segment 16 is formed on the curved surface segment and extends in a curved surface direction. In this manner, the curved groove segment 16 can extend from one side to the other side. After the two half tube portions 17 combine, two curved groove segments 16 combine to form the curved channel segment. For example, the suture needle may be placed in one half suture needle channel groove 18 of one of the half tube portions 17, and then the other half tube portion 17 is combined with the half tube portion 17, so that the suture needle is arranged in the suture needle channel 14.

Additionally, in some embodiments, referring to FIG. 3 and FIG. 4, the tissue closure device includes a stabilizing member 4 and a driving member 6. The stabilizing member 4 is disposed on the tube body 1, and can move between an expanded position and a closed-up position. The driving member 6 is disposed in the tube body 1, and can move between an initial stabilizing member position and a stabilizing member-fired position. The driving member 6 can drive the stabilizing member 4 to move. When the driving member 6 is in the initial stabilizing member position, the stabilizing member 4 is in the closed-up position. When the driving member 6 is in the stabilizing member-fired position, the stabilizing member 4 is in the expanded position. The number of stabilizing members 4 may be one or more, e.g., two. In this manner, a distal end of the tube body 1 may be inserted into a combination of wounds to be sutured, and then the driving member 6 is moved from the initial stabilizing member position to the stabilizing member-fired position, so as to cause the stabilizing member 4 to move from the closed-up position to the expanded position. In this manner, after the tube body 1 is pulled outwards, the stabilizing member 4 can stably and reliably abut against an interior wall of tissue to be sutured. Additionally, in some embodiments, the tissue closure device may not be disposed with a needle tip protection structure 7. Alternatively, in some other embodiments, in order to improve safety, during movement of the suture needle to the puncture position, in order to prevent the tip of the suture needle from causing possible damage to surrounding organs, referring to FIG. 1 and FIG. 2, the tissue closure device includes a needle tip protection structure 7 having a retracted position and a blocking position. The suture needle 3 can drive the needle tip protection structure 7 from the retracted position to the blocking position. When the needle tip protection structure 7 is being driven from the retracted position to the blocking position, or is in the blocking position, the needle tip protection structure 7 blocks the tip of the suture needle 3. In this manner, during the puncturing process of the suture needle 3 or when in the blocking position, the needle tip protection structure 7 can always block the tip of the suture needle 3, thereby preventing the needle tip from being exposed and effectively avoiding the risk of allowing the needle tip to cause possible damage to surrounding organs.

In the tissue closure device, there may be a plurality of types of the needle tip protection structure 7. For example, a type of the needle tip protection structure 7 may include a body and a protection cap. The protection cap may be connected to the body by means of a flexible connecting strip. The protection cap is located on a movement path of the suture needle. In this manner, during the puncturing process of the suture needle 3 or when in the blocking position, the protection cap can be sleeved on the needle tip to prevent the needle tip from being exposed, and the flexible connecting strip can continuously connect the protection cap to the body to prevent the protection cap from falling off.

Another type of the needle tip protection structure 7, referring to FIG. 23, includes a protection surface 46. When moving or in the puncture position, the tip of the suture needle 3 may abut the protection surface 46. Alternatively, regarding other types of the needle tip protection structure 7, referring to the different types of needle tip protection structures shown in FIG. 17 to FIG. 29, the needle tip protection structure 7 includes a protection surface 46 that the tip of the suture needle 3 can abut. Protection protrusions 37 are formed on the protection surface 46. In the puncture position, the tip of the suture needle 3 is stopped by the protection protrusions 37. In this manner, during the puncturing process of the suture needle 3 or in the blocking position, the tip of the suture needle 3 abuts the protection surface, and the protection protrusions 37 can prevent the suture needle 3 from disengaging from the protection surface.

Additionally, there may be a plurality of structure types of the protection protrusion 37. For example, regarding a structure type of the protection protrusion, referring to FIG. 17 to FIG. 20, a ring of protrusions is formed around the edges of the protection surface and regarded as the protection protrusions 37. Alternatively, regarding another structure type of the protection protrusion, referring to FIG. 26, grid-shaped protrusions 38 are formed on the protection surface, and the edges of the grid-shaped protrusions 38 are regarded as the protection protrusions 37. The grid-shaped protrusions 38 may include transverse protrusions and longitudinal protrusions that are arranged in a staggered manner, or may include oblique protrusions that are arranged in an obliquely staggered manner, or may include a plurality of circular or oval protrusions that are connected.

Regarding other structure types of the protection protrusion 37, referring to FIG. 27 to FIG. 29, a plurality of protection protrusions 37 may be spaced apart from each other on the protection surface in a direction away from the tube body 1. That is, the plurality of protection protrusions 37 are not arranged in a staggered manner, but are spaced apart from each other. For example, in some embodiments, referring to FIG. 27 and FIG. 28, each protection protrusion 37 extends in a linear manner. That is, each protection protrusion 37 has a shape of a straight strip, and the plurality of protection protrusions 37 are arranged in a wavy manner or in a zigzag manner. In some other embodiments, referring to FIG. 29, each protection protrusion 37 extends in a V-shape manner. That is, each protection protrusion 37 is V-shaped, and the plurality of protection protrusions 37 are arranged in a wavy manner or in a zigzag manner.

Furthermore, regarding other types of the needle tip protection structure 7, referring to FIG. 1, FIG. 17, FIG. 21, and FIG. 22, the needle tip protection structure 7 includes a plurality of stabilizing members 4 and a plurality of protection plates 42 each having a protection surface (e.g., two stabilizing members 4 and two protection plates 42 as shown in the drawing). One stabilizing member 4 is disposed with one protection plate 42. In the puncture position, each suture needle 3 passes through a suture fixing portion 39 of a respective corresponding stabilizing member 4, so as to flip the protection plate 42 from the retracted position to the blocking position. In the retracted position, the plurality of protection plates 42 are respectively located in the respective corresponding stabilizing members 4, thereby ensuring that no protrusions are present on the exterior surfaces of the stabilizing members 4, and allowing an easy entry into and exit from tissue. In the blocking position, the tip of the suture needle 3 is stopped by the protection protrusions 37. In this manner, each suture needle 3 can drive the corresponding protection plate 42 to flip. During flipping, each protection plate 42 can provide good protection against the corresponding suture needle 3, and prevent the needle tip from being exposed.

Additionally, in some embodiments, the protection plate 42 may be an elastomer, and can return from the blocking position to the retracted position by means of the elastic force thereof. For example, the protection plate 42 may be a rubber plate or a silicone plate. In this manner, after the plurality of suture needles 3 disengage from the protection plates 42, the protection plates 42 can return to the retracted position by means of the elastic force thereof.

Additionally, in some embodiments, when closing up, the plurality of stabilizing members 4 can push against the plurality of protection plates 42, so that the plurality of protection plates 42 return from the blocking position to the retracted position. For example, one end of the protection plate 42 may be connected to the stabilizing member 4 by means of a connecting pin. In this manner, when closing up, the plurality of stabilizing members 4 drive the plurality of protection plates 42 to return to the retracted position.

Additionally, the protection plate 42 can be connected to any position on the stabilizing member 4, as long as the protection plate 42 can provide protection against the needle tip. For example, in some embodiments, referring to FIG. 1 and FIG. 22, the plurality of protection plates 42 are connected to respective ends of the plurality of stabilizing members 4 disposed away from the tube body 1. In this manner, the plurality of protection plates 42 are driven by the suture needles to move away from each other and expand outwards to the blocking position. Alternatively, in some other embodiments, referring to FIG. 17, FIG. 18, and FIG. 21, the plurality of protection plates 42 are connected to the respective other ends of the plurality of stabilizing members 4 disposed close to the tube body 1. In this manner, the plurality of protection plates 42 are driven by the suture needles to approach each other and expand inwards to the blocking position.

Additionally, an accommodation cavity 47 may be formed on the stabilizing member 4, and the protection plate 42, when in the retracted position, may be located in the accommodation cavity 47. Additionally, the protection plate 42 may be connected to the stabilizing member 4 in a plurality of connection manners. For example, regarding one connection manner, an engagement slot 44 is formed on the stabilizing member 4, and an engagement edge 45 at one end of the protection plate 42 may engage in 44. Alternatively, regarding another connection manner, the protection plate 42 may be connected to the stabilizing member 4 by means of a support shaft or a rotation shaft. Additionally, in some embodiments, in order to further improve the protection effect on the needle tip, when in the puncture position, a suture hanging port 40 on a side surface of the plurality of suture needles 3 faces the protection surface. In this manner, the protection surface can isolate the edge of the suture hanging port 40 from surrounding organs that may possibly exist, which can completely prevent the edge of the suture hanging port 40 from contacting the surrounding organs that may possibly exist, thereby improving the safety of transferring the suture needle.

Furthermore, in the tissue closure device, in some embodiments, an opening (e.g., an axially extending bar-shaped opening or a spiral opening) may be formed on a side wall of the tube body 1. A manual operation portion 8 of the needle operating member 5 can extend radially out of the opening. In this manner, the manual operation portion 8 can move linearly in an axial direction along the bar-shaped opening, or the manual operation portion 8 can move along the spiral opening. Alternatively, in some other embodiments, referring to FIG. 1 and FIG. 2, the needle operating member 5 is disposed at a proximal end position of the tube body 1, and the manual operation portion 8 of the needle operating member 5 extends out of a proximal end port of the tube body 1. In this manner, formation of an opening on the side wall of the tube body 1 can be avoided, thereby increasing the strength of the tube body 1 while reducing the wall thickness of the tube body 1. In this case, an operator can operate the manual operation portion 8 easily at the proximal end position of the tube body 1, such as pressing the manual operation portion 8 or rotating the manual operation portion 8, thereby driving the plurality of (e.g., two) suture needles 3 to move simultaneously.

Additionally, in the tissue closure device, in some embodiments, the needle operating member 5 can be rotated. For example, the needle operating member 5 can be rotated at the proximal end port of the tube body 1, or the needle operating member 5 can be rotated along the spiral opening on the side wall of the tube body 1. The needle operating member 5 may be connected to a suture needle mount in a mating manner that employs a lead screw thread. The suture needle mount is disposed in the tube body 1 in an axially movable manner. Two suture needles 3 are connected to the suture needle mount. In this manner, a forward or reverse rotation of the needle operating member 5 can drive the suture needle mount to reciprocate axially, thereby driving the two suture needles 3 to move simultaneously. Alternatively, in some other embodiments, referring to FIG. 1 and FIG. 2, the needle operating member 5 can move between the needle-fired position and the initial needle position in the axial direction of the tube body 1. In this manner, the axial movement of the needle operating member 5 can quickly drive the two suture needles 3 to move. Additionally, the structure of the tissue closure device can be further simplified and compact.

Additionally, in some embodiments, an outer diameter of the needle operating member 5 may be equal to an inner diameter of the tube body 1. In this manner, an interior surface of the tube body 1 can entirely contact an exterior surface of the needle operating member 5, so as to guide movement. Alternatively, in some other embodiments, in order to reduce a contact area between the tube body 1 and the needle operating member 5 and facilitate the axial movement of the needle operating member 5, a movement guide structure is disposed between the needle operating member 5 and the tube body 1, and the movement guide structure defines the needle-fired position and the initial needle position of the needle operating member 5. In this manner, the movement guide structure can ensure that the needle operating member 5 moves axially between the needle-fired position and the initial needle position in a stable and reliable manner. Additionally, this further allows the contact area between the exterior surface of the needle operating member 5 and the interior surface of the tube body 1 to be reduced. That is, the needle operating member 5 and the tube body 1 contact each other by means of only the movement guide structure, and the other portions of the needle operating member 5 are spaced apart from the other portions of the tube body 1, so that the needle operating member 5 can easily move axially, and the two suture needles 3 can be easily driven to extend or retract simultaneously.

Certainly, in the tissue closure device, there may be a plurality of types of the movement guide structure. For example, some types of the movement guide structure include two axially spaced apart flanges formed on the needle operating member 5. The two flanges contact the interior surface of the tube body 1. Alternatively, in some other types, referring to FIG. 9, FIG. 10, FIG. 13, and FIG. 14, the movement guide structure includes a guide slot 9 extending axially on the exterior surface of the needle operating member 5 and a guide bump 10 on the interior surface of the tube body 1. The guide bump 10 mates with the guide slot 9. For example, in some embodiments, a half guide bump 10 is formed on each of the two half tube portions 17, and the two half guide bumps 10 can be combined and mate with the guide slot 9. In this manner, the mating of the guide bump 10 and the guide slot 9 not only ensures that the needle operating member 5 moves axially in a stable and reliable manner, but also prevents unnecessary rotation of the needle operating member 5. Additionally, an axial length of the guide slot 9 corresponds to the needle-fired position and the initial needle position. That is, two end portions of the guide slot 9 in the axial direction define the needle-fired position and the initial needle position of the needle operating member 5. When the guide bump 10 abuts one of the end portions of the guide slot 9, the needle operating member 5 is in the needle-fired position, and simultaneously the two suture needles 3 are in the puncture position. When the guide bump 10 abuts the other end portion of the guide slot 9, the needle operating member 5 is in the initial needle position, and simultaneously the two suture needles 3 retract into the tube body 1, for example, exactly located in the respective needle outlet channels 2.

Additionally, in the tissue closure device, in some embodiments, the two suture needles 3 may be connected to the needle operating member 5 by means of an intermediate transition member, such as the suture needle mount mentioned above. Alternatively, in some other embodiments, referring to FIG. 15, a plurality of (e.g., two) suture needles 3 are directly connected to the needle operating member 5. For example, a mounting segment at one end of the suture needle 3 includes a limiting plane, and the mounting segment may be directly inserted in a limiting hole of the needle operating member 5. In this manner, the two suture needles 3 and the needle operating member 5 can be assembled easily, thereby increasing the ease of assembly, and further allowing the needle operating member 5 to directly and accurately drive the two suture needles 3 to move simultaneously.

Additionally, in the tissue closure device, the plurality of suture needles (e.g., two suture needles 3) may be connected to the needle operating member 5 in a plurality of manners. For example, in some manners, a threaded segment is formed on one end of the suture needle 3, and the threaded segment can be in a threaded connection with a threaded hole on the needle operating member 5. Alternatively, in some embodiments, referring to FIG. 15, a plurality of (e.g., two) needle insertion holes 11 spaced apart from each other are formed on a distal end surface of the needle operating member 5. The plurality of (e.g., two) needle insertion holes 11 extend towards a proximal end of the needle operating member 5. A radial hole 12 communicating with the plurality of needle insertion holes 11 is formed on the needle operating member 5. A lock pin 13 is inserted in the radial hole 12. Ends of the plurality of suture needles 3 are inserted in the respective needle insertion holes 11, and are locked by and mate with the lock pin 13 simultaneously. For example, in some embodiments, one lock pin 13 locks and mates with respective ends of two suture needles 3 simultaneously.

Additionally, in some embodiments, referring to FIG. 3 and FIG. 4, when in the initial needle position, the needle operating member 5 allows the driving member 6 to move between the stabilizing member-fired position and the initial stabilizing member position, and when in the needle-fired position, the needle operating member 5 stops the driving member 6 from returning from the stabilizing member-fired position to the initial stabilizing member position. In this manner, when the suture needle does not retract into the tube body 1, undesired retraction of the stabilizing member 4 does not cause deformation of the suture needle and damage other surrounding organs that may possibly exist, thereby improving safety. Thus, only after the needle operating member 5 moves from the needle-fired position to the initial needle position to cause all suture needles to retract into the tube body 1 can the driving member 6 move from the stabilizing member-fired position to the initial stabilizing member position to cause the stabilizing member 4 to move from the expanded position to the closed-up position.

Additionally, in the tissue closure device, similar to the needle operating member 5, the driving member 6 is arranged in a rotatable manner. For example, the driving member 6 can be rotated at the proximal end port of the tube body 1, or the driving member 6 can be rotated along the spiral opening on the side wall of the tube body 1. The driving member 6 is connected to a connecting rod or a driving rod in a mating manner that employs a lead screw thread. The connecting rod or the driving rod is disposed in the tube body 1 in an axially movable manner, and is connected to the stabilizing member 4. In this manner, a forward or reverse rotation of the driving member 6 can drive the connecting rod or the driving rod to reciprocate axially, thereby driving the stabilizing member 4 to expand or close up.

Alternatively, in some other embodiments, referring to FIG. 1 and FIG. 2, the driving member 6 can move between the initial stabilizing member position and the stabilizing member-fired position in the axial direction of the tube body 1. In this manner, the axial movement of the driving member 6 can quickly drive the stabilizing member to expand or close up. Additionally, the structure of the tissue closure device can be further simplified and compact.

Additionally, in some embodiments, referring to FIG. 16, a plurality of axial channels 41 radially spaced apart from each other are formed on the driving member 6, and the plurality of suture needles 3 pass through the respective corresponding axial channels 41. In this manner, the interior space of the tube body 1 can be fully utilized to arrange the driving member 6, the needle operating member 5, and the plurality of suture needles 3, so that the volume of the tube body 1 is smaller, and the interior structure of the tissue closure device is more compact.

Additionally, the driving member 6 may be directly connected to one or more stabilizing members 4. Alternatively, referring to FIG. 16, the tissue closure device further includes a driving rod 19 located in the tube body 1. A proximal end of the driving rod 19 is directly connected to the driving member 6, and a distal end of the driving rod 19 extends out of the distal end of the tube body 1 so as to connect with the plurality of stabilizing members 4. In this manner, the driving rod 19 is utilized to effectively reduce the volume of the driving member 6 and increase the ease of assembling the driving rod 19.

Additionally, the driving member 6 may be connected to the driving rod 19 by means of welding. Alternatively, the driving member 6 may be connected to the driving rod 19 by means of hot melting. Alternatively, in some embodiments, referring to FIG. 11 and FIG. 12, an axially extending central hole 20 is formed on a distal end surface of the driving member 6, a radial channel 21 communicating with the central hole 20 is formed on the driving member 6, and a locking shaft 22 is disposed in the radial channel 21, wherein the proximal end of the driving rod 19 is inserted in the central hole 20, and is locked by and mates with the locking shaft 22.

Additionally, in some embodiments, in order to facilitate assembly of the tissue closure device, referring to FIG. 13 and FIG. 14, the tube body 1 includes two half tube portions 17 that can be combined. A half driving rod channel groove 23 is formed on each half tube portion 17. When the two half tube portions 17 combine to form the tube body 1, the half driving rod channel groove 23 on one of the half tube portions 17 and the half driving rod channel groove 23 on the other half tube portion 17 combine to form a driving rod accommodating channel 24. The driving rod 19 is disposed in the driving rod accommodating channel 24 in an axially movable manner. For example, in some embodiments, in each half tube portion 17, one half driving rod channel groove 23 is located between two combining surfaces.

Additionally, in some embodiments, referring to FIG. 8, the two half tube portions 17 may be completely identical. For example, each half tube portion 17 may include two combining surfaces that are spaced apart from each other and have a height difference therebetween. A suture needle channel groove 18 is formed on each combining surface. A portion between the two combining surfaces may be used as one half driving rod channel groove 23. In this manner, when the two identical half tube portions 17 combine, the combining surfaces are connected to each other with matching shapes, so that the suture needle channel grooves 18 form the suture needle channels 14, and the two suture needle channel grooves 18 are combined with each other to form the driving rod accommodating channel 24, as shown in FIG. 8. Additionally, in some embodiments, referring to FIG. 1 and FIG. 13, an engagement opening 25 and a driving opening 26 axially spaced apart from each other are formed on the side wall of the tube body 1. The driving member 6 includes a stopper 27 and a driving portion 28 axially spaced apart from each other. During axial movement of the driving member 6, the driving portion 28 is always located in the driving opening 26. When the stopper 27 engages in the engagement opening 25, the driving member 6 is in the initial stabilizing member position. When the stopper 27 engages in the driving opening 26, the driving member 6 is in the stabilizing member-fired position. In this manner, after the operator presses the driving portion 28 to cause the stopper 27 to move out of the engagement opening 25, the driving member 6 can move from the initial stabilizing member position to the stabilizing member- fired position. Likewise, after the operator presses the driving portion 28 to cause the stopper 27 to move out of the driving opening 26, the driving member 6 can move from the stabilizing member-fired position to the initial stabilizing member position.

Additionally, in some embodiments, the operator may operate the driving portion 28 to cause the driving member 6 to move between the initial stabilizing member position and the stabilizing member-fired position. Alternatively, in other embodiments, the driving member 6 is connected to an elastic member, such as a spring 43. When the driving member 6 moves from one of the initial stabilizing member position and the stabilizing member-fired position to the other, the elastic member may be in an energy storage state, and when the elastic member releases energy, the elastic member can drive the driving member 6 to return easily.

Additionally, as explained above, when in the needle-fired position, the needle operating member 5 stops the driving member 6 from returning from the stabilizing member- fired position to the initial stabilizing member position. In this case, when in the needle-fired position, the needle operating member 5 stops the stopper 27 from disengaging from the driving opening 26, so as to stop the driving member 6 from returning from the stabilizing member- fired position to the initial stabilizing member position.

Additionally, in some embodiments, in order to increase the ease of operation of pressing the driving portion 28, referring to FIG. 11 and FIG. 12, the driving member 6 includes a suspension arm 29, wherein the stopper 27 and the driving portion 28 are disposed on the suspension arm 29, and the stopper 27 is located at a proximal end of the suspension arm 29. In this manner, by means of a suspension arrangement via the suspension arm 29, the operator can apply a relatively small force to the driving portion 28 to cause the stopper 27 to move out of the engagement opening 25 and the driving opening 26. Additionally, in some embodiments, referring to FIG. 9 and FIG. 10, an axially extending guide groove 30 is formed on the needle operating member 5. When the needle operating member 5 moves axially to the initial needle position, the suspension arm 29 is located outside the guide groove 30. When the needle operating member 5 moves axially to the needle-fired position, the suspension arm 29 slides into the guide groove 30. In this manner, the guiding and mating of the guide groove 30 and the suspension arm 29 enable the needle operating member 5 to move axially in a stable and reliable manner so as to drive the plurality of suture needles to move smoothly. Additionally, after the suspension arm 29 slides into the guide groove 30, the guide groove 30 can stop the suspension arm 29 from moving inwards radially. In this manner, the stopper 27 can be stopped from moving out of the driving opening 26, thereby stopping the driving member 6 from returning from the stabilizing member-fired position to the initial stabilizing member position.

Additionally, the number of the suspension arms 29 and the number of the guide grooves 30 may be selected according to actual needs. For example, the number of the suspension arms 29 and the number of the guide grooves 30 are respectively one. Alternatively, the number of the suspension arms 29 and the number of the guide grooves 30 may be more than one, such as two, three, or four. For example, in some embodiments, referring to FIG. 16, the number of the suspension arms 29 and the number of the guide grooves 30 are respectively two, and the suspension arms 29 and the guide grooves 30 are respectively spaced apart in the radial direction. One suspension arm 29 corresponds to one guide groove 30. When the needle operating member 5 is in the needle-fired position, the distal end of the needle operating member 5 is located between the two suspension arms 29.

Additionally, in some embodiments, referring to FIG. 14, the tube body 1 includes two half tube portions 17 that can be combined. An engagement opening 25 and a driving opening 26 are formed on each half tube portion 17. In this manner, combining the two half tube portions 17 can facilitate assembly of the needle operating member 5 and the driving member 6.

Additionally, in the tissue closure device, a suture may be located outside the tube body 1. Two ends of the suture may be arranged in the suture hanging ports 40 of the suture needles in a plurality of manners. For example, in some embodiments, during suture arrangement, the suture needle may be slightly pushed out of the needle outlet channel 2, and the two ends of the suture are hung and positioned in the suture hanging ports 40. Then, the suture needle is retracted into the needle outlet channel 2. During puncturing and suture arrangement, the suture needle drives the suture to pass through tissue and the suture fixing portion 39 on the stabilizing member, and then moves to the puncture position. In this case, the suture fixing portion 39 holds and positions the suture. In this manner, when the suture needle retracts, the suture remains on the suture fixing portion 39. Then, the stabilizing member moves to the closed-up position, and the two ends of the suture are guided out of the tissue, so as to perform suturing.

Optionally, in some other embodiments, in order to increase the ease of suture arrangement, referring to FIG. 30 to FIG. 35, at each needle outlet channel 2, a suture arrangement notch 31 communicating with the needle outlet channel 2 is formed on the tube body 1. Two suture arrangement notches 31 are respectively used to accommodate at least two ends of a suture outside the tube body 1. When the needle operating member 5 is in the initial needle position, the suture hanging ports 40 of the suture needles at least partially communicate with the suture arrangement notches 31 so that the suture can enter the suture hanging ports 40 through the suture arrangement notches 31. That is, the suture arrangement notches 31 are so configured so that at least two ends of the suture having entered the suture arrangement notches 31 are respectively located in the two suture hanging ports 40. The process of the suture entering the suture arrangement notches 31 and the suture hanging ports 40 is as shown by the three arrows in FIG. 32. In this manner, during the process of arranging the suture in the suture hanging ports, the suture needles are predisposed in the tube body 1, so that the suture needles are not exposed to the outside, which allows safe operation for the operator. Additionally, this protects the suture needles from external contamination. In this manner, the operator may directly arrange the two ends of the suture (e.g., two ends of the suture that are about 3-5 cm) in the suture arrangement notches 31 respectively. In this case, the two ends of the suture are located in the suture hanging ports 40 of the suture needles. In this case, as described above, during puncturing and suture arrangement, the suture needle drives the suture to pass through tissue and the suture fixing portion 39 on the stabilizing member, and then moves to the puncture position. In this case, the suture fixing portion 39 holds and positions the suture. In this manner, when the suture needle retracts, the suture remains on the suture fixing portion 39. Then, the stabilizing member moves to the closed-up position, and the two ends of the suture are guided out of the tissue, so as to perform suturing.

In some embodiments, in order to improve the reliability and smoothness of suture arrangement, an interior wall of the suture arrangement notch 31 may include a plane. The suture needle 3 may abut the plane to cause the suture hanging port 40 to at least partially communicate with the suture arrangement notch 31, thereby preventing a twisting of the suture needle 3 and misalignment between the suture hanging port 40 and the suture arrangement notch 31, which may stop the suture from entering.

Additionally, in order to improve the stability and reliability of suture arrangement, referring to FIG. 32 and FIG. 34, each suture arrangement notch 31 includes an inlet segment 32 and a holding gap 33. The size of the holding gap 33 is smaller than the size of the inlet segment 32, so that the suture having entered the holding gap 33 can be held in the holding gap 33. When the needle operating member 5 is in the initial needle position, the holding gaps 33 are configured to cause at least two ends of the suture held in the holding gaps 33 to be respectively located in two suture hanging ports 40. In this manner, the operator may directly guide the two ends of the suture (e.g., two ends of the suture that are about 3-5 cm) into the holding gaps 33 by means of the inlet segments 32 respectively, and cause the two ends to be held by the holding gaps 33. In this case, the two ends of the suture are located in the suture hanging ports 40 of the suture needles. In this case, as described above, during puncturing and suture arrangement, the suture needle drives the suture to pass through tissue and the suture fixing portion 39 on the stabilizing member, and then moves to the puncture position. In this case, the suture fixing portion 39 holds and positions the suture. In this manner, when the suture needle retracts, the suture remains on the suture fixing portion 39. Then, the stabilizing member moves to the closed-up position, and the two ends of the suture are guided out of the tissue, so as to perform suturing.

Additionally, in order to further increase the ease of suture arrangement, referring to FIG. 34, the size of the inlet segment 32 decreases gradually from the exterior to the interior. In this manner, the operator can easily guide the two ends of the suture along the inlet ends 32 into the holding gaps 33.

Additionally, in some embodiments, referring to FIG. 32 and FIG. 34, each suture arrangement notch 31 intersects a needle outlet channel 2 corresponding thereto. For example, the suture arrangement notch 31 is arranged at an approximately middle portion of the needle outlet channel 2. In this case, at one end of each suture arrangement notch 31, a suture exit notch 34 for causing an outlet end of the needle outlet channel 2 to communicate with the end of the suture arrangement notch 31 is formed on the tube body 1. The suture exit notch 34 is used to allow the suture, which is guided out when the suture needle 3 extends obliquely out of the needle outlet channel 2, to exit the needle outlet channel 2. As shown by a single arrow in FIG. 32, the suture can exit the needle outlet channel 2 through the suture exit notch 34. In this manner, during puncturing and suture arrangement, the suture needle extends obliquely out of the needle outlet channel 2, drives the suture to pass through tissue and the suture fixing portion 39 on the stabilizing member, and then moves to the puncture position. In this case, the suture can exit the suture exit notch 34.

Additionally, in some embodiments, the suture arrangement notch 31 and the suture exit notch 34 may be directly formed on the side wall of the tube body 1. Alternatively, in some other embodiments, referring to FIG. 35, the needle outlet channel 2, the suture arrangement notch 31, and the suture exit notch 34 may be formed on a single component that may be mounted on the tube body 1. For example, a gap is formed on the tube body 1, and an elastic block 35 is disposed in the gap. The needle outlet channel 2, the suture arrangement notch 31, and the suture exit notch 34 are formed on the elastic block 35. The elastic block 35 may be a rubber block or a silicone block. In this manner, the elasticity of the elastic block 35 can be utilized to cause the suture arrangement notches 31 (e.g., the holding gaps 33) to easily position the two ends of the suture.

Additionally, in some embodiments, in order to improve the orderliness of the suture outside the tube body 1, referring to FIG. 30 to FIG. 35, a suture arrangement structure is formed on an exterior surface of the tube body 1, and is used to position the suture outside the tube body 1. In this manner, the suture arrangement structure can be used to arrange the suture on the exterior surface of the tube body 1 in an orderly manner, thereby preventing the suture from being disordered and tangled. Certainly, during the process of puncturing and suture guiding, the suture needle pulls the suture, which may cause the suture to disengage from the suture arrangement structure.

Certainly, the suture arrangement structure may be implemented in a plurality of modes. For example, the suture arrangement structure implemented in a mode includes one or more detachable suture pressing blocks 48 disposed on the exterior surface of the tube body 1. In this case, the suture pressing block 48 can press the suture against the exterior surface of the tube body 1. Alternatively, the suture arrangement structure implemented in another mode includes a suture arrangement slot 36 formed on the exterior surface of the tube body 1 and extending towards the proximal end of the tube body 1. The suture arrangement slot 36 is used to accommodate the suture outside the tube body 1. In this manner, the suture outside the tube body 1 can be located in the suture arrangement slot 36 in an extension path of the suture arrangement slot 36. The suture arrangement slot 36 may be U-shaped or V-shaped, or may possibly have another shape.

Additionally, in some embodiments, the suture arrangement slot 36 may not communicate with two suture arrangement notches 31 of the tube body 1 communicating with two needle outlet channels 2. In this manner, a portion of the suture protrudes from the exterior surface of the tube body 1. Additionally, in some other embodiments, referring to FIG. 32, the suture arrangement slot 36 communicates with two suture arrangement notches 31 of the tube body 1 communicating with two needle outlet channels 2. In this manner, a portion of the suture located between the two suture arrangement notches 31 may be completely located in the suture arrangement slot 36.

Additionally, in some embodiments, in the case where the tube body 1 is divided into two half tube portions 17 (e.g., a first half tube portion and a second half tube portion), after the suture needle 3, the needle operating member 5, the driving member 6, and the driving rod 19 of the tissue closure device are disposed on one of the half tube portions 17 (i.e., the first half tube portion), the other half tube portion (i.e., the second half tube portion) is combined with the half tube portion 17, so as to dispose the suture needle 3, the needle operating member 5, the driving member 6, and the driving rod 19 in the tube body 1 all at once. The driving member 6 drives, via the driving rod 19, a stabilizing member 4 at a distal end of the tissue closure device to close up or expand, thereby significantly increasing the ease of assembling the tissue closure device.

It should be understood by those skilled in the art that the above embodiments are all exemplary and not restrictive. Different technical features appearing in different embodiments may be combined to achieve beneficial effects. On the basis of studies on the attached drawings, the specification and the claims, those skilled in the art shall be able to understand and realize other variations of the disclosed embodiments. Any reference numerals in the claims should not be construed as limiting the scope of protection. Certain technical features appearing in different dependent claims do not mean that these technical features could not be combined to achieve beneficial effects.