CN217310490U

CN217310490U - Minimally invasive tendon sheath scalpel

Info

Publication number: CN217310490U
Application number: CN202220916135.2U
Authority: CN
Inventors: 闫厚军; 马志国
Original assignee: Hospital Of 82nd Group Army Of Pla
Current assignee: Hospital Of 82nd Group Army Of Pla
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-08-30
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a minimally invasive tendon sheath scalpel, which belongs to the technical field of medical instruments and comprises a scalpel body and a guide handle provided with a guide pin, wherein the scalpel body comprises a cutting section and a pushing section; the guide pin is provided with a guide slideway for guiding the cutting direction of the cutting section; the guide handle is provided with an operation area, the operation area is provided with a guide chute for the pushing section to slide, and the guide chute comprises a cutter body inlet and a cutter body outlet for the cutting section to slide into the guide chute; the guide pin plays a role in guiding and positioning, and the guide slide way on the guide pin plays a role in limiting the cutter body, so that the cutter body can only move back and forth along the axial direction of the guide pin, and cannot be vertically separated from the guide pin and shake left and right, thereby accurately guiding the cutting direction of the cutter body, and avoiding the situations of accidentally injuring other tissues and improper cutting; the guide handle plays a role in conveniently holding, supporting the cutter body and controlling the cutter body to move back and forth, and the cutter body can slide into the guide slideway from the outside through the guide chute on the guide handle.

Description

Minimally invasive tendon sheath scalpel

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a minimally invasive tendon sheath scalpel.

Background

The tendon sheath is divided into a fiber layer and a synovium layer, wherein the fiber layer is positioned on the outer layer and comprises a tendon fiber sheath which mainly plays a role in restraining tendon sliding; the synovial membrane layer is positioned in the tendon fiber sheath and is a double-layer cylindrical sheath, the synovial membrane layer comprises a synovial sheath inner layer and a synovial sheath outer layer, the synovial sheath inner layer is wrapped on the surface of the tendon, the synovial sheath outer layer is attached to the inner surface of the tendon fiber sheath, a small amount of synovial fluid is contained between the synovial sheath inner layer and the synovial sheath outer layer, and the effects of lubricating and nourishing the tendon are achieved. Due to repeated friction strain of hands or the influence of general diseases, the local tendon sheath tissues are subjected to ischemia, edema and inflammation, then local tendon sheath hyperplasia is thickened, the inner surface of the tendon sheath becomes rough, tenosynovitis is finally formed, the sliding of the tendon is blocked, the tendon is clamped and pressed, edema and thickening are generated, and the problems of blockage during the movement of the bent and extended fingers and the like are solved.

At present, for tenosynovitis which is ineffective in conservative treatment, a small needle knife is mainly used for minimally invasive surgery treatment, the small needle knife is a special knife with a knife handle, the front end of the small needle knife is a flat knife edge, the skin incision of the surgery is small, and the clamping pressure and adhesion of the small needle knife to tendons can be relieved by directly cutting a pulley which is hyperplastic, thick, narrow and incarceration caused by chronic inflammation stimulation, so that the local stenosis is relieved, the tendon flexion and extension activity is recovered, and the functions of relieving pain and improving are achieved. However, the small needle knife has a plurality of problems during operation: firstly, because the point of the small needle knife is lack of the protection of the knife edge, when the pathological part is punctured, other parts of the small needle knife, such as finger nerves, finger arteries and the like are easy to cut, and adverse accidents are caused; secondly, the direction of the small needle knife is controlled by hands in the puncturing process, so that the situation of accidentally injuring other tissues can still occur once the direction is not correct, and the problem that the tendon sheath is not cut in place can also occur. Therefore, the tendon sheath push broach with the crescent-shaped cutting edge or the V-shaped cutting edge at the end is provided in the market, except that the V-shaped cutting edge surface of the cutter head is a sharp surface, the rest parts of the cutter body are blunt surfaces, so that the problem that the tendon sheath push broach cuts other parts when pushed subcutaneously is solved, for example, the tendon sheath push broach with the crescent-shaped cutting edge is disclosed in the patent number of CN90222044.6 and the patent number of micro subcutaneous tendon sheath incision knife, the patent number of CN201120215353.5 and the patent number of tendon sheath push knife with the V-shaped cutting edge is disclosed in the patent number of 'a tendon sheath push broach'. However, although the above patent solves the problem that the point of the small needle knife is apt to accidentally injure other tissues, there is still no good solution for the problem that the small needle knife is not easy to grasp in the puncture direction, which results in accidentally injuring other tissues and cutting the small needle knife in place.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem, provide the utility model discloses a minimal access tendon sheath scalpel, under the guide effect of guide pin and guiding handle, the cutting direction of control cutter body that can be accurate to carry out accurate cutting to tendon sheath hyperplasia part, avoid appearing the accidental injury other tissues or cut problem not in place.

In order to achieve the above object, the utility model provides a following scheme: the utility model discloses a minimally invasive tendon sheath scalpel, which comprises a scalpel body and a guide handle provided with a guide pin, wherein the scalpel body comprises a cutting section and a pushing section; the guide pin is provided with a guide slideway for guiding the cutting direction of the cutting section; the cutting device is characterized in that an operation area is arranged on the guide handle, a guide sliding groove for the sliding of the pushing section is arranged on the operation area, and the guide sliding groove comprises a cutter body inlet and a cutter body outlet for the sliding of the cutting section into the guide sliding way.

Preferably, the pushing section is provided with a pushing block which is convenient for pushing by fingers.

Preferably, the operation area includes support surfaces located at both sides of the guide chute for supporting the push block.

Preferably, one side of the pushing block, which faces away from the supporting surface, is provided with an anti-slip surface.

Preferably, the antiskid surface is provided with a first antiskid stripe.

Preferably, the end of the cutting section is provided with a V-shaped cutting edge.

Preferably, the guide slideway is an inverted T-shaped slideway.

Preferably, the guide handle is of a gun-shaped structure, and the guide pin is fixed at a gun head of the gun-shaped structure.

Preferably, the bottom surface of the gun head of the guide handle is provided with an anti-slip section.

Preferably, the antiskid section is provided with a second antiskid stripe.

The utility model discloses for prior art gain following technological effect:

1. the minimally invasive tendon sheath scalpel mainly comprises a scalpel body, a guide pin and a guide handle, wherein the guide pin and the guide handle are integrated; the guide pin plays a role in guiding and positioning, and the guide slide way on the guide pin plays a role in limiting the cutter body in the longitudinal direction (perpendicular to the direction of the guide pin) and the transverse direction (the directions of two sides of the cutter body), so that the cutter body can only move back and forth along the axial direction of the guide pin, and cannot be vertically separated from the guide pin and sway left and right, thereby accurately guiding the cutting direction of the cutter body, realizing accurate cutting of the hyperplasia part of the tendon sheath, and avoiding accidental injuries and situations that the cutting cannot be performed; the guide handle has played the effect of conveniently handing, supporting the cutter body and promoting the cutter body, and the workspace on the guide handle makes things convenient for the finger to go the back-and-forth movement of control cutter body, and the direction spout makes the cutter body can follow the outside and slide into the direction slide.

2. The utility model provides an end of cutter body cutting section is equipped with V style of calligraphy cutting edge, and V style of calligraphy cutting edge is the cutting surface of sharpness only between two knife tips, and the part beyond two knife tips of V style of calligraphy cutting edge is blunt face to when V style of calligraphy cutting edge tangential tendon sheath hyperplasia part, play the effect of protecting other soft tissues.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of a right side top perspective view of a minimally invasive tendon sheath scalpel;

FIG. 2 is a schematic left side top perspective view of a minimally invasive tendon sheath scalpel;

FIG. 3 is a front view of the minimally invasive tendon sheath scalpel;

FIG. 4 is a schematic top view of a minimally invasive tendon sheath scalpel;

FIG. 5 is a schematic view of the left side of the guiding handle in a bottom perspective view;

FIG. 6 is a schematic top view of the guiding handle;

FIG. 7 is a schematic diagram of a right side top perspective view of the cutter body;

FIG. 8 is a front view of the cutter body;

FIG. 9 is a schematic right view of the minimally invasive tendon sheath scalpel;

fig. 10 is a left side view of the guide handle.

Description of reference numerals: 1. a cutter body; 2. guiding a needle; 3. a guide handle; 4. a pushing block; 5. a guide slide way; 6. a guide chute; 7. a cutter body inlet; 8. a cutter body outlet; 9. a slideway entrance; 10. a slideway outlet; 11. a first anti-slip stripe; 12. a second anti-slip stripe; 13. a V-shaped blade; 14. a first tip; 15. A second tip; 16. a tendon sheath hyperplasia portion; 17. an inverted T-shaped slider.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment discloses a minimally invasive tendon sheath scalpel, as shown in fig. 1 to 10, which comprises a scalpel body 1 and a guide handle 3, wherein a guide pin 2 is arranged on the guide handle 3; the cutter body 1 comprises a cutting section and a pushing section; an operation area is arranged on the guide handle 3, a guide chute 6 is arranged on the operation area, and two ends of the guide chute 6 respectively comprise a cutter body inlet 7 and a cutter body outlet 8; the guide pin 2 is provided with a guide slide way 5 which is arranged along the axial direction of the guide pin 2, the guide slide way 5 penetrates through the guide pin 2 in the axial direction, two ends of the guide slide way 5 are respectively provided with a slide way inlet 9 and a slide way outlet 10, and the slide way inlet 9 is communicated with the cutter body outlet 8.

The specific using process is as follows:

firstly, the guide handle 3 is held by hand, so that the guide needle 2 pierces into the hyperplasia part 16 of the tendon sheath for positioning; then, the cutting section of the cutter body 1 slides into the guide chute 6 through the cutter body inlet 7 of the guide handle 3, and the cutter body 1 continues to slide, so that the cutting section sequentially passes through the cutter body outlet 8 and the chute inlet 9 to slide into the guide chute 5, and the pushing section slides into the guide chute 6; then, the pushing section is controlled by fingers to slide forwards along the guide chute 6, so that the cutting section also slides forwards in the guide slide way 5 of the guide pin 2, and then under the guiding and limiting of the guide slide way 5, after the blade surface of the cutting section extends out of the slide way outlet 10, the cutting section precisely cuts into the positioning position of the tendon sheath hyperplasia part 16 to cut the tendon sheath hyperplasia part 16 in the positioning range (at this time, the pushing section does not exceed the range of the working area on the guide handle 3); finally, after the cutting is finished, the cutter body 1 is withdrawn from the cutter body inlet 7 of the guide handle 3 by controlling the pushing section, and then the guide pin 2 is pulled out, so that the tenosynovitis surgery is finished.

In this embodiment, as shown in fig. 1 to 10, the pushing section of the cutter body 1 is provided with the pushing block 4, the pushing block 4 is rectangular as a whole and is located on a side of the pushing section opposite to the guide chute 6, and after the pushing section of the cutter body 1 slides into the guide chute 6, the pushing block 4 can facilitate a finger to push the cutter body 1 to slide forward or backward.

In order to ensure the stability of the pushing section of the cutter body 1 in the guiding chute 6, in this embodiment, as shown in fig. 1 to 10, two sides of the guiding chute 6 on the operation area are provided with supporting surfaces for supporting the pushing block 4, that is, when the pushing section of the cutter body 1 slides into the guiding chute 6, the bottom surface of the pushing block 4 will be attached to the supporting surface of the working area, so as to ensure the stable sliding of the pushing block 4.

Further, in order to avoid the phenomenon that the fingers push the pushing block 4 to slip, in this embodiment, as shown in fig. 1 to 10, one side of the pushing block 4, which faces away from the supporting surface, is provided with an anti-slip surface, and the friction force between the pushing block 4 and the fingers can be improved through the anti-slip surface, so that the slipping phenomenon is avoided.

Preferably, in the present embodiment, as shown in fig. 1 to 10, the anti-slip surface is formed by disposing a first anti-slip stripe 11 on the anti-slip surface, and the first anti-slip stripe 11 is formed by disposing a plurality of strip-shaped protrusions at intervals, so as to increase the friction force between the pushing block 4 and the finger.

In this embodiment, as shown in fig. 1 to 10, a V-shaped cutting edge 13 is disposed at an end of a cutting section of the cutter body 1, the V-shaped cutting edge 13 includes a first cutting edge 14 and a second cutting edge 15, the shape of the V-shaped cutting edge 13 enables only a sharp cutting surface to be formed between the first cutting edge 14 and the second cutting edge 15 of the cutter body 1, and other portions of the first cutting edge 14 and the second cutting edge 15 are blunt surfaces, that is, the first cutting edge 14 and the second cutting edge 15 of the cutter body 1 are blunt, so that the function of protecting other soft tissues can be achieved, and the other soft tissues are prevented from being cut.

Further, in the present embodiment, as shown in fig. 1 to 10, the first cutting edge 14 is slightly longer than the second cutting edge 15, which is beneficial to improving the smoothness of the tendon sheath hyperplasia part 16 and avoiding the occurrence of the stuck phenomenon.

In this embodiment, as shown in fig. 1 to 10, the guide slideway 5 is an inverted T-shaped slideway, one side of the corresponding cutter body 1, which faces away from the pushing block 4, is provided with an inverted T-shaped slider 17 (both the cutting section and the pushing section are provided, and the inverted T-shaped slider 17 and the inverted T-shaped slideway are of an integrated structure), and the shape and size of the inverted T-shaped slider 17 are matched to ensure the stability of the sliding of the cutter body 1.

Further, in order to facilitate the sliding of the cutter body 1 into the guide chute 6, in the present embodiment, as shown in fig. 1 to 10, the guide chute 6 is composed of a rectangular groove portion and a circular groove portion which are vertically distributed, and the groove width of the rectangular groove portion is matched with the thickness of the cutter body 1, so as to prevent the cutter body 1 from shaking left and right. The size of the circular groove portion is slightly larger than the size of the inverted-T slider 17 so that the inverted-T slider 17 can be easily slid into the circular groove portion. Meanwhile, in order to prevent the cutter body 1 from shaking up and down, the groove height of the rectangular groove part is matched with the width of the cutter body 1, after the pushing section slides into the guide sliding groove 6, the top surface of the inverted T-shaped sliding block 17 is attached to the top surface of the circular groove part, and the bottom surface of the pushing block 4 is attached to the supporting surfaces on two sides of the rectangular groove part, so that the cutter body 1 cannot shake in the up-and-down direction. And when the cutter body 1 slides into the guide chute 6, the inverted T-shaped slide block 17 at the cutting section of the cutter body 1 can be over against the upper inverted T-shaped slide way (guide slide way 5) so as to enable the cutting section to smoothly slide into the inverted T-shaped slide way.

In this embodiment, as shown in fig. 1 to 10, the guiding handle 3 is a gun-shaped structure, which is beneficial for holding by hand, wherein the guiding pin 2 is fixed at the gun head of the gun-shaped structure, and the guiding chute 6 is arranged at the top of the gun body of the gun-shaped structure.

Further, in order to avoid the problem of slippage when the guide handle 3 is held by hand, in the embodiment, as shown in fig. 1 to 10, the bottom surface of the gun head of the guide handle 3 is provided with an anti-slip section, and the anti-slip section can adopt various ways of improving friction force, such as making a pitted surface, or providing anti-slip patterns, or installing rubber anti-slip parts, and the like.

Preferably, in this embodiment, as shown in fig. 1 to 10, the anti-slip segment is provided with a second anti-slip stripe 12, and the second anti-slip stripe 12 is also composed of a plurality of strip-shaped protrusions arranged at intervals.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A minimally invasive tendon sheath scalpel is characterized by comprising a scalpel body and a guide handle provided with a guide pin, wherein the scalpel body comprises a cutting section and a pushing section; the guide pin is provided with a guide slideway for guiding the cutting direction of the cutting section; the cutting device is characterized in that an operation area is arranged on the guide handle, a guide sliding groove for the sliding of the pushing section is arranged on the operation area, and the guide sliding groove comprises a cutter body inlet and a cutter body outlet for the sliding of the cutting section into the guide sliding way.

2. The minimally invasive tendon sheath scalpel of claim 1, wherein the pushing section is provided with a pushing block which facilitates pushing by a finger.

3. The minimally invasive tendon sheath scalpel according to claim 2, wherein the operating area comprises support surfaces located on both sides of the guide chute for supporting the pushing block.

4. The minimally invasive tendon sheath scalpel according to claim 3, wherein a side of the pushing block facing away from the supporting surface is provided with an anti-slip surface.

5. The minimally invasive tendon sheath scalpel according to claim 4, wherein the anti-slip surface is provided with a first anti-slip stripe.

6. The minimally invasive tendon sheath scalpel according to any one of claims 1-5, wherein the end of the cutting section is provided with a V-shaped blade.

7. The minimally invasive tendon sheath scalpel of claim 6, wherein the guide slide is an inverted T-shaped slide.

8. The minimally invasive tendon sheath scalpel according to claim 7, wherein the guide handle is of a gun-shaped structure, and the guide pin is fixed at a gun head of the gun-shaped structure.

9. The minimally invasive tendon sheath scalpel according to claim 8, wherein an anti-slip section is arranged on the bottom surface of the gun head of the guide handle.

10. The minimally invasive tendon sheath scalpel of claim 9, wherein the anti-slip segment is provided with a second anti-slip stripe.