A conventional syringe generally comprises a syringe barrel, a syringe plunger movable with respect to the syringe barrel, and a syringe needle mounted to a nozzle disposed at one end of the syringe barrel. The syringe plunger also includes a plunger head disposed at one end thereof and generally made of rubber, etc., an elongated stem disposed in the middle . thereof, and a handle attached to the other end thereof.

In the conventional syringe described above, the operator fills the syringe barrel with a dose of injection fluid by drawing up the injection fluid through the needle. The operator then inserts the needle into the muscle of the injection object and injects the medicine by pushing the plunger handle down.

However, in the conventional syringe, there are many problems in that the syringe needle may be bent or broken by the abrupt movement of the injection object, for example, a baby or an animal, in that injection operation is not easy, and in that it takes a long time to perform the injection.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a

syringe to facilitate the injection procedure on an object which is likely to make abrupt and disruptive movements.

It is another object of the present invention to provide a syringe for preventing the syringe needle from being bent or broken during the injection procedure.

It is still another object of the present invention to provide a syringe with a means to adjust the length of the syringe needle to be inserted into the muscle of the injection object. It is still another object of the present invention to provide a syringe with a means to adjust the quantity of injection fluid to be injected into the muscle of the injection object.

According to the present invention, the syringe comprises a syringe barrel with a nozzle disposed at one end thereof, a syringe plunger movable with respect to the interior of the syringe barrel, a syringe needle mounted to the nozzle of the syringe barrel, and a plunger moving member for longitudinally moving the syringe plunger within the syringe barrel. The plunger moving member has an end part vertically attached to the outward end of the syringe plunger, and a side part elongated along the exterior surface of the syringe barrel.

In the syringe with the configuration described above, a securing member having a supporting plate centered around the needle, which is supported by the skin of the injection object for the injection procedure is further provided to the syringe barrel adjacent to the nozzle. The securing member is either permanently attached to the syringe barrel or removable from the syringe barrel. The securing member greatly facilitates the

injection procedure for an injection object which is likely to make abrupt movements.

In the syringe with the configuration described above, a insertion length adjusting member for positioning the supporting plate at a desired distance from the free end of the needle is further provided between the syringe barrel and the securing member. The insertion length adjusting member is preferably thread-coupled to the securing member so that it may longitudinally travel along the length of the needle. Accordingly, the length of the needle to be inserted into the muscle of the injection object may be appropriately adjusted by rotating the insertion length adjusting member.

In the syringe with the configuration described above, an injection fluid adjusting member for automatically determining the quantity of the medicine to be injected into the injection object by blocking the downward movement of the plunger moving member at the desired position is further provided on the syringe barrel. The injection fluid adjusting member is preferably thread-coupled to the exterior surface of the syringe member so that it may travel longitudinally along the syringe barrel.

BRIEF DESCRIPTION OF THE DRAWING The preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings, in which:

Fig. 1 is a front view of a syringe according to the present invention;

Fig. 2 is a cross-sectional view of the syringe shown in Fig. 1;

Fig. 3 is a front view of another syringe according to the present invention;

Fig. 4 is a cross-sectional view of the syringe shown in Fig. 3; Fig. 5 is an illustrative view of the manner of using the syringe according to the present invention;

Figs. 6 (A) and (B) are illustrative views of the additional insertion length adjust member according to the present invention; and, Fig. 7 is a front view showing a syringe with an injection fluid adjusting member according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to Figs. 1 and 2, a syringe 10 according to the present invention minimally comprises a cylindrical syringe barrel 20 having a nozzle 21 disposed at one end thereof, a syringe needle 50 mounted to the nozzle 21, a syringe plunger

30 inserted into the syringe barrel 20 and longitudinally travelling in the interior of the syringe barrel 20, and a plunger moving member 40. The syringe plunger 30 has an elongated stem 31 and a plunger head 32 mounted on the inward end of the stem 31. The plunger moving member 40 has an end part 43 vertically attached to the outward end of the stem 31 and a side part 41 elongated along the exterior surface 22 of the syringe barrel 20. An annular stopper 42 is vertically formed at the downward end of the side part 41 of the plunger moving member 40.

When an operator injects medicine into the muscle of the injection object, the plunger moving member 40 makes the removal from the syringe of the injection fluid easy.

In addition to the configuration described above, a securing member 60 having an annular supporting plate 61 centered around the needle 50, which is supported by the skin of the injection object is provided with unitary the syringe barrel 20. The securing member 60 improves the injection procedure on an injection object which is likely to make an abrupt movements.

In Figs. 3 and 4, a syringe with a securing member modified from that of Figs. 1 and 2 is shown. The securing member 70 shown in Figs. 3 and 4 has a receiving part 72 for receiving the downward end of the syringe barrel 20 in addition to a supporting plate 71 so that it may be separated from the syringe barrel 20.

Referring to Fig. 5, while seizing the plunger moving member 40 of the syringe filled with injection fluid, an operator inserts the needle 50 into the muscle of the injection object 110, and then pushes down the plunger moving member 40 in order to force the injection fluid out of the syringe barrel 20. At this time, the supporting plate 61 and 71 of the securing member 60 and 70 is supported by the skin of the injection object 110 in order to secure the syringe barrel 20, thereby improving the injection procedure on an injection object 110 which is likely to make an abrupt movements.

Figs. 6 (A) and (B) are illustrative views of an additional insertion length adjusting member according to the present invention.

Referring to Figs. 6 (A) and (B), an insertion length adjusting member 80 for positioning the supporting plate 101 at a desired length starting from the free end of the needle

50 is further provided between the syringe barrel 20 and the securing member 100. The insertion length adjusting member 80 has a receiving part 81 for receiving the downward end of the syringe barrel 20, and a male screw part 82. The securing member 100 has a supporting plate 101, and a female screw part 102 coupled to the male screw part 82.

As the securing member 100 is rotated in a clock-wise or counter clock-wise direction, with respect to the insertion length adjusting member 80, the securing member 100 is moved upward as shown in Fig. 7 (A) or moved downward as shown in Fig. 7 (B) along the insertion length adjusting member 80. Accordingly, an operator may adjust the length of the needle 50 to be inserted into the muscle of the injection object 110 by simply rotating the securing member 100. Fig. 7 is a front view illustrating a syringe with an additional injection fluid adjusting member according to the present invention.

Referring to Fig. 7, an injection fluid adjusting member 90 for automatically determining the quantity of the medicine to be injected into the injection object 110 by blocking the downward movement of the plunger moving member 40 at a desired position is further provided to the syringe barrel 20. The injection fluid adjusting member 90 is a kind of female screw member, which is coupled to a male screw part 23 additionally formed in the exterior surface of the syringe barrel 20, so that it may travel longitudinally along the syringe barrel 20. The injection fluid adjusting member 90 blocks the downward motion of the plunger moving member 40, in other words, the plunger 30, to the desired position for the injection

procedure, and thereby automatically determining the quantity of the injection fluid.

The syringe having an injection fluid adjusting member 90 may be preferably used in continuous injection operations such as with numerous livestock.