| JPS60166312 | [Title of the device] Upper jawbone perforator |
| JP2009034311 | HAND TORQUE CONVERTER |
| US5290171A | 1994-03-01 | |||
| US5127833A | 1992-07-07 | |||
| US4743198A | 1988-05-10 | |||
| US4465461A | 1984-08-14 | |||
| JP2001333926A | 2001-12-04 |
| 1. | A 3dimensitional bent structure of a dental instrument having a handle 10, an end operational portion 20, and an extended portion 30 formed between the handle 10 and the end operational portion 20, characterized in comprising: a first bent portion 31 which is formed in such a manner that the extended portion 30 is bent in a certain direction at a certain angle at a first bending point A, said first bent portion 31 being bent at an angle of a° with respect to an axial direction of the handle ; a second bent portion 32 which is formed in such a manner that the first bent portion 31 is bent in a certain direction at a certain angle at the second bending point B spaced from the first bending point A and is not parallel with the extended portion 30 and the first bent portion 31, said second bent portion 32 being bent at an angle of a° in a longitudinal direction which becomes far away with respect to an axial direction of the handle ; a third bent portion 33 which is formed in such a manner that the second bent portion 32 is bent in a certain direction at a certain angle at the third bending point C spaced from the second bent portion B and is not parallel with the extended portion 30, the first bent portion 31 and the second bent portion 32, said third bent portion 33 being bent at an angle of a° which becomes far away with respect to an axial direction of the handle ; and a fourth bent portion 34 which is formed in such a manner that the third bent portion 33 is bent in a certain direction at a certain angle at a fourth bending point D spaced from the third bent point C and is not parallel with the extended portion 30, the first bent portion 31, the second bent portion 32 and the third bent portion 33, said fourth bent portion 34 being bent at an angle of a° in a longitudinal direction which becomes near with respect to an axial direction of the handle. |
| 2. | The structure of claim 1, wherein said fourth bent portion 34 is bent at a fourth bending point D on the third bent portion 33 in such a manner that the axial direction of the fourth bent portion 34 is parallel with an axial direction of the extended portion 30. |
| 3. | The structure of claim 1, wherein said angle of a° is in a range of about 90° to 120°. |
Description of Related Art Generally, a dental instrument is classified into a diagnosing instrument, a periodontal instrument, an operation instrument based on the purpose of its use. Figure 1 shows the above instruments.
As shown in Figure 1, an instrument of the first drawing is a diagnosing explorer used for a decay, tartar search, a state of pocket, and a diagnosis of ejection and implant, and a dental instrument of the second drawing is a diagnosis probe which is used for checking a depth of a periodontal pocket, a height of an attachment, an anatomy shape, and a gum bleeding. In addition, a
dental instrument of the third drawing is a mallet used for impacting teeth.
The above dental instruments such as diagnosing instrument, periodontal instrument, and operational instrument are formed of an end portion (or operational portion) which contacts with teeth, a handle easily held by a hand, and an extended portion therebetween. The extended portion generally has a bent portion so that the dental instrument is not interfered with a patient's lip when an end portion contacts with teeth.
The bent portions of the above dental instrument have the first or the second bent portions. However, the above bent portions are formed on the plane with respect to an axial line of the handle. Namely, the above bent portions do not have a 3-dimensional shape.
For example, as shown in Figure 2, in the instruments T, the bent portion T1 is generally used for contacting with the teeth D of the inner side of the lip M. However, an end portion (or operational portion) of each instrument is implemented based on a certain direction when performing its own function such as a scraping, cutting, grooving, etc.
In addition, in order to effectively use the end portion based on a certain operational direction with respect to a certain portion of the teeth, the end portion of the dental instrument is rotated and twisted at various angles. When rotating the instrument from the state of Figure 2, the instrument may be largely
interfered with a lip as shown by the imaginary line of Figure 2.
SUMMARY OF THE INVENTION The present invention provides a bending structure for dental instruments in order to overcoming the problems encountered in the conventional art.
It is an object of the present invention to provide a bending structure for dental instruments capable of preventing an interference within a patient's lip even when a dental instrument moves in any directions by forming a bent portion at a certain angle in an extended portion between a handle portion and an end portion of a dental instrument, thereby making it unnecessary that a patient opens his mouth largely, implementing an easier access to a portion that it is difficult to approach and performing a surgical dental operation easily.
To achieve the above objects, in a dental instrument having a handle 10, an end operational portion 20, and an extended portion 30 formed between the handle 10 and the end operational portion 20, there is provided a 3- dimensitional bent structure of a dental instrument comprising a first bent portion 31 which is formed in such a manner that the extended portion 30 is bent in a certain direction at a certain angle at the first bending point A, the first bent portion 31 being bent at an angle of a° with respect to an axial direction of
the handle, a second bent portion 32 which is formed in such a manner that the first bent portion 31 is bent in a certain direction at a certain angle from the second bending point B spaced from the first bending point A and is not parallel with the extended portion 30 and the first bent portion 31, the second bent portion 32 being bent at an angle of a° in a longitudinal direction where becomes far away with respect to an axial direction of the handle, a third bent portion 33 which is formed in such a manner that the second bent portion 32 is bent in a certain direction at a certain angle at the third bending point C spaced from the second bent point B and is not parallel with the extended portion 30, the first bent portion 31 and the second bent portion 32, the third bent portion 33 being bent at an angle of a° which becomes far away with respect to an axial direction of the handle, and a fourth bent portion 34 which is formed in such a manner that the third bent portion 34 is bent in a certain direction at a certain angle at the fourth bending point D spaced from the third bent portion C and is not parallel with the extended portion 30, the first bend portion 31, the second bent portion 32 and the third bent portion 33, the fourth bent portion 34 being bent at an angle of a° in a longitudinal direction which becomes near with respect to an axial direction of the handle.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention.
Figure 1 is a view illustrating a conventional dental instrument; Figure 2 is a view illustrating a state of use of a conventional dental instrument; Figure 3 is a view illustrating a dental instrument according to the present invention ; Figure 4 is a view illustrating the construction of a bent state of a dental instrument according to the present invention; and Figures 5A through 5C are views illustrating a state of use of a dental instrument according to the present invention.
<Descriptions of reference numerals of major elements of the drawings 10: handle 20: end operation portion 30: extended portion 31: first bent portion 32: second bent portion 33: third bent portion DETAILED DESCRIPTION OF PREFFERED EMBODIMENTS The constitution and operation of the present invention will be described
with reference to the accompanying drawings.
Figure 3 is a view illustrating a dental instrument in which an extended portion is bent according to the present invention, and Figure 4 is a front and plane view illustrating a bent state.
The dental instrument according to the present invention includes a handle 10, an extended portion 30 and an end operational portion 20 formed in an end of the extended portion.
Namely, in the dental instruments which includes a handle 10, an end operational portion 20, and an extended portion 30 formed therebetween, the extended portion has a first bent portion 31, a second bent portion 32, a third bent portion 33, and a fourth bent portion 34.
The first bent portion 31 is formed in such a manner that the extended portion 30 is bent in a certain direction at a certain angle at a first bending point A, said first bent portion 31 being bent at an angle of a° with respect to an axial direction of the handle. The second bent portion 32 is formed in such a manner that the first bent portion 31 is bent in a certain direction at a certain angle at the second bending point B spaced from the first bending point A and is not parallel with the extended portion 30 and the first bent portion 31, said second bent portion 32 being bent at an angle of a° in a longitudinal direction which becomes far away with respect to an axial direction of the handle. The third bent
portion 33 which is formed in such a manner that the second bent portion 32 is bent in a certain direction at a certain angle at the third bending point C spaced from the second bent portion B and is not parallel with the extended portion 30, the first bent portion 31 and the second bent portion 32, said third bent portion 33 being bent at an angle of a° which becomes far away with respect to an axial direction of the handle. The fourth bent portion 34 which is formed in such a manner that the third bent portion 33 is bent in a certain direction at a certain angle at a fourth bending point D spaced from the third bent point C and is not parallel with the extended portion 30, the first bent portion 31, the second bent portion 32 and the third bent portion 33, said fourth bent portion 34 being bent at an angle of a° in a longitudinal direction which becomes near with respect to an axial direction of the handle.
Here, the above angle of a° is preferably in a range of about 90° through 120° and is preferably 110° as shown in Figure 4.
In the dental instrument according to the present invention, since the extended portion 30 is bent at the first through fourth portions, so that as shown in Figures 5A through 5C, it is possible to perform an operation without causing a certain interference in all direction with respect to the teeth.
Namely, as shown in Figure 5A, the end operational portion 20 is approaching to the upper portion of the tooth. At this time, the second bent
portion B and the third bent portion C of the extended portion 30 are in the outermost portion. Since the above portion contacts with a patient's lip, the patient is not needed to open mouth big compared to the conventional art.
In addition, as shown in Figure 5B, the end operational portion 20 is approaching to the lower portion of the outer side of the tooth. At this time, since the first bent portion A and the second bent portion B are in the outermost portion, the above portion contacts with a patient's lip. Therefore, at this time, the patient is not needed to open mouth big.
As shown in Figure 5C, the end operational portion 20 is approaching in the direction of the side surface of the front side of the tooth. At this time, the third bent portion C or the fourth bent portion D is in the direction of the outermost portion, the patient is not needed to open mouth big.
For reference, the extended portion according to the present invention may be adapted to each extended portion of various hand pieces (motored instruments used by engaging to dental cutting instruments and grinding instruments) used in a dental chair unit except for a diagnosing instrument shown in the drawings, and an operation instrument.
As described above, in the dental instrument according to the present invention, the extended portion from the handle to the end operational portion may be bent more than two times, and the bent portions are implemented in a
3-dimensional direction. Therefore, even when the dental instrument approaches to a certain tooth and gum tissue in any directions, it is possible to prevent any interference with respect to a patient's lip.
Therefore, the problem that the patient must open his mouth big is overcome, and it is possible to easily approach to a portion where it is difficult to approach for cutting a certain portion in the mouth, for thereby implementing a convenient operation for the patients.
As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Next Patent: METHOD FOR APPLYING ORTHODONTIC FIXING ELEMENTS