WO2004012611A1

WO2004012611A1 - Surgical tool and method of producing the same

Info

Publication number: WO2004012611A1
Application number: PCT/JP2003/009566
Authority: WO
Inventors: Tsuyoshi Uetake
Original assignee: Keisei Medical Industrial Co., Ltd.
Priority date: 2002-08-01
Filing date: 2003-07-28
Publication date: 2004-02-12
Also published as: JP2004065293A

Abstract

A surgical tool adapted to have its shape variously changed so that a region where a surgical tool can hardly be introduced can be simply operated and even a plurality of regions can be operated with a single surgical tool, the surgical tool being of highly practical utility. A surgical tool for performing surgical operations by a working section (2) installed in a working body (1), wherein the hardness of the working body (1) is set at a bending-allowing hardness to make it possible to perform surgical operations by the working section (2) with the working body (1) held bent.

Description

Description Surgical instrument and its manufacturing method

The present invention relates to a surgical instrument such as a scalpel, a loop, and tweezers. Background art

Surgical instruments used for surgery and the like, for example, females, generally have high hardness and no flexibility (hereinafter referred to as conventional examples). This is because sharpness is the most important for scalpels, and a decrease in hardness is likely to cause a decrease in sharpness.

However, this conventional example has the following problems.

When performing surgery on the inside of the palate, for example, when cutting the gums of the posterior teeth with a scalpel, the introduction of the female is made through the opening of the palate, and if the shape of the female is straight, Without a large inclination, the scalpel would not be able to contact the gums of the posterior teeth, making surgery very difficult.

In order to solve this problem, for example, it is conceivable to prepare a female bent in advance and use a female having this bent shape.

However, also in this case, there is a problem that since the teeth arrangement of each person is different, and since the left and right posterior teeth are operated, a large number of females having different bending shapes must be prepared.

The present invention solves the above problems, and is transformed into various shapes. The aim is to provide a highly practical surgical tool that can be operated easily with a single surgical tool even in places where it is difficult to introduce surgical tools, and in multiple places. Disclosure of the invention

The gist of the present invention will be described with reference to the accompanying drawings.

A surgical instrument operated by the working unit 2 provided in the work body 1, wherein the hardness of the work body 1 is set to a bendable hardness so that the work body 1 can be operated by the work unit 2 in a bent state. The present invention relates to a surgical instrument characterized by having the following configuration.

2. The surgical tool according to claim 1, wherein the work body 1 is configured to be able to be operated by the work unit 2 while maintaining the bent state when the hardness of the work body 1 is bendable and bent. It is.

3. The surgical instrument according to claim 1, wherein the hardness of the work body 1 is set to a hardness that allows bending by hand. 4.

In addition, the hardness of the working unit 2 is set to a bendable hardness, and the operating unit 2 is configured to be able to perform an operation with the working unit 2 bent while the working body 1 is bent. It relates to the surgical instrument according to any one of 1 to 3.

Further, the working body 1 is a blade plate 1, the working portion 2 is a blade edge 2, and the hardness of the blade plate 1 is set to a strength that can be bent and that the sharpness of the blade edge 2 is not insufficient. A surgical tool according to claims 4 and 5, characterized in that: 8. The surgical tool according to claim 1, wherein the hardness of the work body 1 is set to 250 to 35 OHv.

Further, the working tool 1 is a surgical tool according to any one of claims 1 to 13, which is a working tool 1 for palate surgery.

Also, shall apply in manufacturing process of a surgical instrument for surgery by working unit 2 provided in the working member 1, it is attached to the working unit 2 to the working body 1 become hardness of 2 5 0 to 3 5 0 H _V Material The present invention also relates to a method for manufacturing a surgical tool, wherein the surgical tool 3 is capable of being operated by the working unit 2 while the work body 1 is bendable and the work body 1 is bent. .

Also, this is a method of manufacturing a surgical tool for performing a surgical operation using the work unit 2 provided on the work body 1, wherein the work unit 2 is attached to a material whose hardness has been increased by heat treatment, and subsequently, the work unit 2 is attached. By annealing the material to obtain a work body 1 having a hardness of 250 to 350 Hv, work is performed with the work body 1 having a bendable hardness and the work body 1 being bent. The present invention relates to a method for manufacturing a surgical tool, which is characterized by manufacturing a surgical tool 3 that can be operated by a part 2. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an explanatory perspective view of the present embodiment.

FIG. 2 is an explanatory enlarged perspective view of a main part of the present embodiment.

Figure 3 is an illustration of the operation site. BEST MODE FOR CARRYING OUT THE INVENTION

Preferred embodiments of the present invention (how to carry out the invention) will be described with reference to the drawings, showing the operation and effects thereof. The working body 1 (for example, the blade plate 1 of the female 3) is bent to the left or right to deform it into a bending state suitable for surgery, and in this bending state, the working unit 2 (for example, the blade edge 2) is bent. ).

Even when performing surgery on a part where it is difficult for the working part 2 to abut (for example, when cutting back gums), the operation can be easily performed by bending the working body 1 so that the working part 2 abuts well. It can be carried out.

Also, when performing surgery on a part where it is difficult for another working part 2 to abut (for example, when cutting the right posterior gum first and then cutting the left posterior gum), the working part 2 is good. Surgery can be easily performed by bending the work body 1 into another shape so as to abut the work.

In this way, by bending the working body 1 into various shapes and deforming it, it is possible to easily perform an operation even in a part where the working unit 2 is difficult to abut.

In addition, when operating at a plurality of locations, it is possible to easily cope by bending and deforming the working body 1, so that it is not necessary to prepare various kinds of surgical tools, and a single surgical tool is required. 3 allows surgery at multiple locations.

The drawings illustrate an embodiment of the present invention and will be described below.

In this embodiment, the operation performed by the operation unit 2 provided on the operation body 1 is performed. The tool 3 is configured so that the hardness of the working body 1 is set to a bendable hardness, and the operating section 2 can perform an operation with the working body 1 bent.

Surgical tools 3 used for surgery include female tools, tweezers, needle electrode hemostats, loop-type probes, spherical hemostats, etc., depending on the application. )). The present embodiment will be described below using the method 3 as a specific example.

The knife 3 has a blade plate 1 provided with a blade edge 2 for cutting tissues such as skin and meat. Further, the blade plate 1 is provided with a connecting portion 5 for attaching a handle 4, and the connecting portion 5 connects the blade plate 1 and the aforementioned handle 4 to form a knife 3.

The hardness of the blade plate 1 is set at 250 to 350 HV. The hardness is such that the blade plate 1 can be bent by hand, and when cutting the tissue with the blade edge 2 while the blade plate 1 is bent, the blade plate 1 maintains the bent state. Is the hardness that can be obtained.

The hardness of the blade edge 2 is set in the same manner as the hardness of the blade plate 1. Experiments have confirmed that if the hardness is 250 to 350 Hv, there is no problem in cutting the tissue by the cutting edge 2 (the sharpness remains good).

By setting the hardness of both the blade plate 1 and the blade edge 2, it is possible to perform the surgery by freely bending the blade plate 1 together with the blade edge 2.

This method 3 is preferably used for palate surgery where the blade edge 2 is particularly difficult to reach during surgery.

The material of the blade plate 1 is preferably martensitic stainless steel or the like, like the general female material. The manufacture of the blade 1 of the method 3 is performed as follows.

First production example

First, a material such as martensite stainless steel is punched into the shape of the blade plate 1 by a press.

Subsequently, the punched material, that is, the blade plate 1 is subjected to a heat treatment to increase the hardness to 600 to 800 Hv as in the case of a normal knife blade plate. They will break.) Subsequently, one side edge of the blade plate 1 is sharpened with a grindstone to which diamond is welded to form a blade edge 2.

Subsequently, burrs are removed by buffing.

Subsequently, annealing is performed using a high vacuum furnace to lower the hardness of the blade plate 1 and the blade edge 2 to 250 to 350 Hv. The use of the high vacuum furnace prevents the blade plate 1 from being oxidized and degraded.

According to the first manufacturing example described above, it is possible to manufacture the blade plate 1 of the female 3 capable of cutting the tissue with the blade edge 2 while maintaining the bendable and bent state.

Second production example

As in the first production example, first, a punched blade plate 1 is formed by pressing a material such as martensite stainless steel into the shape of the blade plate 1 by pressing.

Subsequently, the punched blade plate 1 is subjected to a heat treatment so that the hardness of the blade plate 1 can be bent and can maintain the bent state, that is, the hardness of the blade plate 1 is set to 250 to 350 HV. Enhance.

Subsequently, one side edge of the blade plate 1 is sharpened with a grindstone to which a diamond is welded to form a blade edge 2. Subsequently, burrs are removed by puff polishing.

According to the second manufacturing example described above, it is possible to manufacture the blade plate 1 of the scalpel 3 capable of cutting the tissue with the blade edge 2 while maintaining the bendable and bent state.

Hereinafter, the results of the operation using the method 3 of this example will be described in detail.

The surgery was performed to close the left palate tear and gain language skills in a one and a half year old boy. In the surgery, the opening of the palate 6 was opened with a Dingman opener, and a female was introduced into the palate 6 to remove the mucosa and periosteum (dotted line in Fig. 3) of the hard palate on the tooth side. Then, the patient was moved backward (push-back), and an operation was performed to close the left cleft palate with the mucosa and periosteum.

This area was difficult for a normal scalpel to come into contact with the mucous membrane and periosteum due to the presence of teeth, and the exfoliation was troublesome. The surgery was completed while cutting only the necessary parts while using only one knife 3 in the example and bending and deforming the blade plate 1 by hand as needed.

The surgeon's impression was that the blade edge 2 could be easily abutted against the part that could not be cut with a scalpel before, and that the blade plate 1 was bent so that it could be cut once by fitting to the curve of the part to be cut What he could do. He was worried about sharpness but could cut mucous membrane and periosteum without any problems.

He also mentioned that he was right-handed and often cut while moving his wrist or hand from right to left, which often caused blade 1 to be bent to the left. Thus, the surgeon's reputation was extremely high.

Since the present embodiment is configured as described above, it is desired to easily introduce the scalpel 3 in a place where it is difficult to introduce the female 3 by bending the blade plate 1 by hand and deforming it into various shapes. The blade edge 2 can be reliably brought into contact with the place, which makes the surgical tool excellent in practicality that can perform surgery well.

In addition, by deforming the blade plate 1 into various shapes, it becomes a highly practical surgical tool that can perform surgery with a single scalpel 3 in a plurality of locations.

In addition, the blade 1 can be freely deformed by bending the blade edge 2 along with the blade edge 2, thereby providing a surgical tool with excellent practicality that can perform cutting operations along complicated curves in a favorable manner.

In addition, the hardness of blade plate 1 is set to a value that does not cause it to deform to another shape when cutting the surgical site while being bendable, so that the shape of bent blade plate 1 during surgery returns to the original shape. Without surgery, surgery can be performed reliably. Industrial applicability

Since the present invention is configured as described above, the working unit can be easily brought into contact with a part where the working unit is difficult to contact by appropriately bending the working body, thereby improving the operation. It is a surgical tool with excellent practicality.

In addition, when operating in another place, the operator can easily respond by bending the working body to another shape, and the operation can be advanced quickly without preparing many surgical tools Excellent practicality It becomes a surgical tool.

In addition, since the operation can be performed in the working section while the working body is bent, the bending state of the working body does not return to its original state, and the surgical tool is excellent in practicality that can perform the surgery without fail.

In particular, the present invention is quite in the invention of good ones become _c according to claim 3, bent state corresponding exactly to the shape of the location to be operative by bending the working body by hand during surgery for the palate surgery Can be produced quickly, and the operation can be performed even better.

In the invention according to claims 4 and 5, since the working part can also be bent, the working body can be bent into an arbitrary shape without being affected by the working part, and it is easier to cope with a complicated surgical site, which is even better. Surgery can be performed in the future.

Also, by bending the working body so that the shape of the working portion becomes a bent shape or a curved shape, for example, when performing a cutting operation to a curved shape, the cutting operation is performed by matching the shape of the working portion to the curved shape. In this respect, the operation can be performed even better.

In the invention according to claims 6 and 7, since the sharpness of the blade edge is sufficient, the operation can be performed more favorably.

In the inventions according to claims 8 to 13, by setting the hardness so that the effects of the present invention can be surely exerted, a surgical instrument having extremely excellent operability can be obtained.

In the invention according to claim 26, a surgical instrument that can exhibit the effects of the present invention can be easily obtained. In the invention according to claim 27, by applying the existing method for manufacturing a surgical tool and adding a step of reducing the hardness of the working body on the way, a simple surgical tool that can exert the effect of the present invention is obtained. be able to.

Further, it is possible to obtain a surgical instrument in which both the working body and the working section can be reliably bent.

Claims

The scope of the claims

1. A surgical tool operated by the working unit provided on the working body. The hardness of the working body is set to a bendable hardness, and the working body can be operated by the working unit with the working body bent. A surgical instrument characterized by being configured as described above.

2. The surgical instrument according to claim 1, wherein the operating tool is configured to be capable of operating with a working portion while maintaining the bent state when the hardness of the working body is bendable and bent.

3. The surgical instrument according to claim 1, wherein the hardness of the working body is set to a hardness that allows bending by hand.

4. The hardness of the working part is set to a bendable hardness, so that the working part can be operated by the working part in a state where the working part is bent together with the bending of the working body. The surgical instrument according to any one of the preceding claims.

5. The operating part according to claim 3, wherein the working part has a hardness set to be bendable, and the operating part can be operated by the working part in a state where the working part is bent together with the bending of the working body. Surgical tools.

6. The working body is a blade plate, and the working portion is a blade edge, and the hardness of the blade plate is set to be strong enough to be able to bend and not to lack the sharpness of the blade edge. Item 4. The surgical tool according to Item 4.

7. The working body is a blade plate, and the working portion is a blade edge, and the hardness of the blade plate is set to a strength that allows bending and a sharpness of the blade edge. Item 5. The surgical tool according to Item 5.

8. The hardness of the working body is set to 250 to 35 OH v The surgical instrument according to any one of claims 1 and 2, wherein

9. The surgical tool according to claim 3, wherein the hardness of the working body is set to 250 to 350 Hv.

10. The surgical tool according to claim 4, wherein the hardness of the working body is set to 250 to 35 O Hv.

11. The surgical tool according to claim 5, wherein the hardness of the working body is set to 250 to 350 HV.

7. The surgical instrument according to claim 6, wherein the hardness of the working body is set to 250 to 350 HV.

13. The surgical instrument according to claim 7, wherein the hardness of the working body is set to 250 to 350 HV.

14. The surgical tool according to claim 1, wherein the working body is a working body for palate surgery.

5. The surgical instrument according to claim 3, wherein the working body is a working body for palate surgery.

1 6. The surgical instrument according to claim 4, wherein the work body is a work body for palate surgery.

1 7. The surgical instrument according to claim 5, wherein the work body is a work body for palate surgery.

1 8. The surgical instrument according to claim 6, wherein the working body is a working body for palate surgery.

1 9. The surgical instrument according to claim 7, wherein the working body is a working body for palate surgery.

20. The surgical instrument according to claim 8, wherein the working body is a working body for palate surgery. Three

21. The surgical instrument according to claim 9, wherein the working body is a working body for palate surgery.

22. The surgical instrument according to claim 10, wherein the working body is a working body for palate surgery.

23. The surgical instrument according to claim 12, wherein the working body is a working body for palate surgery.

24. The surgical tool according to claim 12, wherein the work body is a work body for palate surgery.

25. The surgical instrument according to claim 13, wherein the working body is a working body for palate surgery.

26. This is a method of manufacturing a surgical tool for performing a surgical operation using a working unit provided on a working body, wherein the working body is provided with a working body having a hardness of 250 to 350 HV so that the working body is provided. A method for manufacturing a surgical tool, comprising manufacturing a surgical tool which is bendable and can be operated by a working part in a state where the work body is bent.

27. This is a method of manufacturing a surgical tool operated by a working section provided on a working body, in which a working section is attached to a material whose hardness has been increased by heat treatment, and then the material provided with the working section is annealed. By using a work body having a hardness of 250 to 350 HV, a surgical tool that can be operated by a work section with a work body having a hardness that can be bent and the work body being bent is manufactured. A method for manufacturing a surgical tool.