CN218606758U

CN218606758U - Nerve dissector and fixing device thereof

Info

Publication number: CN218606758U
Application number: CN202222140585.XU
Authority: CN
Inventors: 张波
Original assignee: Beijing Jishuitan Hospital
Current assignee: Beijing Jishuitan Hospital
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2023-03-14
Anticipated expiration: 2032-08-15

Abstract

The utility model belongs to the technical field of medical instrument, a nerve dissector and fixing device thereof is related to. A nerve dissector comprises; a hand-held part, an operation part and a connecting part; the handheld part is a flat plate body, at least one surface of the handheld part is provided with an anti-skidding structure, the operating part is in an isosceles triangle shape, and the front end of the operating part is provided with a stripping head; the connecting part connects the handheld part and the operating part. A nerve dissector fixation device comprising; the nerve dissector comprises a shell, a push rod and a guide pin, wherein the nerve dissector penetrates through an opening of the shell, a notch penetrates out of the opening, the surface of the notch is a plane, and the mounting hole is formed in a surface perpendicular to the opening; the push rod comprises a pressing sleeve and a rod body, and the rod body is slidably arranged in the pressing sleeve; the guide pin is a long straight cylinder structure and is used for fixing the nerve dissector. The utility model has the advantages of safe and convenient operation, difficult slippage at the handheld position, fixed stability and high reliability.

Description

Nerve dissector and fixing device thereof

Technical Field

The utility model belongs to the technical field of medical instrument, particularly relate to a nerve stripper and fixing device thereof.

Background

The existing nerve dissector consists of a dissecting head and a dissecting rod. When in operation, the operator holds the stripping rod to strip the nerve or other tissues through the stripping head.

The existing nerve dissector needs to be continuously held by an operator, and cannot be fixed; in addition, when the stripping rod is held by hand to strip nerves or other tissues, the hand-held part is easy to slip, and risks are brought to the operation. Therefore, there is a need for a nerve dissector fixing device with a hand-held part that is not easy to slip off and is safe and convenient to operate, and a nerve dissector fixing device with convenient operation, stable fixation and high reliability.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present invention is directed to a nerve dissector and a fixing device thereof.

The purpose of the utility model is realized like this:

a nerve dissector, comprising: a hand-held part, an operation part and a connecting part; the handheld part is a flat plate body, at least one surface of the handheld part is provided with an anti-skidding structure, the operating part is in an isosceles triangle shape, and the front end of the operating part is provided with a stripping head; the connecting part is connected with the handheld part and the operating part.

In a preferred embodiment of the present invention, the operation portion includes a first surface and a second surface; the first surface is provided with a plurality of circular arc grooves, and the second surface is a plane.

The utility model discloses a preferred embodiment, it is provided with most advanced to peel off the head to the first side direction of court is buckled.

A nerve dissector fixation device comprising: the device comprises a shell, a push rod and a guide pin; the shell comprises an opening, a mounting hole and a notch, the nerve dissector penetrates through the opening, the notch penetrates out, the plane where the notch is located is set to be a plane, and the mounting hole is arranged on the plane perpendicular to the opening; the push rod comprises a pressing sleeve and a rod body, the rod body is slidably mounted on the pressing sleeve, and the pressing sleeve is matched with the mounting hole; the guide pin is a long straight cylinder structure and is used for fixing the nerve dissector.

The utility model discloses a preferred embodiment, the mounting hole is provided with the annular groove, the downthehole spacing ring that is provided with, the spacing ring with body of rod looks adaptation.

The utility model discloses a preferred embodiment, be provided with the second spring on the pressing sleeve periphery, the second spring is fixed with the beans of jumping, the diameter of beans of jumping and the width looks adaptation of annular groove.

In a preferred embodiment of the present invention, the rod body is circumferentially provided with a limiting edge, and the limiting edge is adapted to the hole wall of the pressing sleeve; the body of rod still is provided with the spacing groove, the spacing inslot is installed first spring.

The utility model discloses a preferred embodiment, the notch includes first notch and second notch, the width of first notch with the wall thickness of operating portion is the same, the width of second notch is less than the diameter of guide pin.

The utility model discloses a preferred embodiment, be provided with the limiting plate between first notch and the second notch, the limiting plate is the flexonics board to laminate mutually with the second face.

The utility model discloses a preferred embodiment, the one end that the limiting plate was kept away from to the second notch is provided with the semicircle orifice, is used for fixing the guide pin.

The utility model discloses following beneficial effect has:

1. the handheld part of the nerve dissector is provided with an anti-skidding structure, so that the nerve dissector is convenient to hold and prevented from skidding;

2. the front end of the nerve stripper operating part is provided with a stripping head which is arranged into an isosceles triangle, and the stripping head is provided with a tip and is bent towards the first surface, so that the sharpness of the stripping head is increased, and the stripping operation of nerves is facilitated;

3. the nerve stripper fixing device fixes the nerve stripper on the surface of the skin of the human body, releases hands, is convenient for taking other instruments for operation, and improves the safety and the convenience of the operation;

4. on being fixed in human bone with the guide pin, insert the casing along the second notch with the guide pin, insert the casing along first notch with the nerve stripper again to act on nervous, when needing to release both hands, promote the push rod to the direction that is close to the limiting plate, make be provided with the bellied looks butt of circular arc on circular arc recess and the body of rod, be fixed in fixing device with the nerve stripper on, it is fixed stable, the reliability is high.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic diagram of a nerve dissector according to the present invention;

fig. 2 is a partially enlarged sectional view of a nerve dissector according to the present invention;

fig. 3 is a schematic structural view of a nerve dissector fixing device according to the present invention;

FIG. 4 is an enlarged partial cross-sectional view of a nerve dissector fixation device of the present invention;

fig. 5 is a structural view of a housing of a nerve dissector fixing device according to the present invention;

fig. 6 is a cross-sectional view of a housing of a nerve dissector fixation device of the present invention;

FIG. 7 is a sectional view of the push rod structure of a nerve dissector fixing device according to the present invention;

FIG. 8 is a sectional view of a pressing sleeve structure of a nerve dissector fixing device according to the present invention;

fig. 9 is a sectional view of a rod structure of a nerve dissector fixing device according to the present invention.

Reference numerals:

1. a nerve dissector; 1-1, a handheld part; 1-2, an operation part; 1-3, a connecting part; 1-4, arc grooves; 1-5, anti-skid protrusions; 2. a housing; 2-1, opening; 2-2, mounting holes; 2-3, a first notch; 2-4, semicircular holes; 2-5, a second notch; 2-6, a limiting plate; 3. a push rod; 3-1, pressing the sleeve; 3-2, a rod body; 3-3, a limiting edge; 3-4, a first spring; 3-5, limiting grooves; 3-6, a second spring; 3-7, jumping beans; 4. and (6) guiding the needle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For the purpose of facilitating understanding of the embodiments of the present application, the following detailed description will be given with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

The nerve dissector fixing device provided by the embodiment is a fixing device for fixing a nerve dissector at a designated position of a human body in an operation. The existing nerve dissector is simple, easy to slip and incapable of being fixed when an operator holds the nerve dissector, needs to be continuously held by the operator, and is inconvenient for the operator to take other instruments for other operations. Therefore, it is a problem to be solved by those skilled in the art to provide a nerve dissector which is not liable to slip off and is convenient to operate, and a nerve dissector fixing device for fixing the nerve dissector.

The utility model discloses the design includes that a plurality of circular arc grooves are arranged on the first surface of the nerve dissector operation part, the second surface is arranged into a plane, the circular arc grooves are matched with the circular arc bulges arranged on the push rod, the second surface is jointed with the limit plate, the guide pin is fixed on the bone, the nerve dissector and the guide pin are arranged in the shell, the notch surface of the shell is jointed with the skin of the human body, the push rod is pressed inwards, the jumping bean is matched with the annular groove, and the guide pin can be fixed on the shell, thereby completing the fixation of the nerve dissector; the hands are released, other instruments can be taken conveniently for other operations, and the safety and the convenience of the operation are improved.

The following specific examples are provided for this purpose in this detailed description.

Example 1

The present embodiment provides a nerve dissector, referring to fig. 1 and 2, including: a hand-held part 1-1, an operation part 1-2 and a connecting part 1-3. The handheld part 1-1 is a strip-shaped flat plate body, and a chamfer is arranged for facilitating holding. Preferably, at least one surface of the handheld part 1-1 is provided with an anti-skid structure, the anti-skid structure can be an anti-skid rubber sleeve, the anti-skid rubber sleeve completely covers the handheld part 1-1, and the material is soft and comfortable to hold; preferably, the anti-slip structure is anti-slip protrusions which are uniformly distributed on the holding surface of the holding part 1-1, so that the anti-slip structure is not easy to slip during holding, and the safety of the operation is improved.

The operation part 1-2 is a stressed part for stripping nerves, and the operation part 1-2 is arranged to be an isosceles triangle and gradually decreases towards the direction away from the connecting part 1-3.

The operation part 1-2 comprises a first surface and a second surface; the first surface is provided with a plurality of arc grooves 1-4 which are matched with the arc bulges on the rod body 3-2; the second surface is a plane and is attached to the limiting plates 2-6, so that the friction force between the nerve dissector and the limiting plates (2-6) is increased when the nerve dissector is fixed, and the nerve dissector is fixed more stably.

Preferably, the operation part 1-2 further comprises a peeling head, the peeling head is arranged at the front end of the operation part, the shape of the peeling head is an isosceles triangle, and the peeling head is provided with a tip and is bent towards the first surface. So set up, can increase the sharpness of peeling off the head, be convenient for peel off nervous operation.

The connecting part 1-3 is connected with the handheld part 1-1 and the operating part 1-2, and the connecting part 1-3, the handheld part 1-1 and the operating part 1-2 are integrally formed, so that the forming is convenient, and the consistency of materials is kept; the connecting part 1-3 is a flat plate body, so that the handheld part 1-1 and the operating part 1-2 are positioned in the same plane, an operator can conveniently and accurately grasp the position relation between the nerve to be stripped and the stripping head, and the operation is convenient.

Preferably, the connecting part 1-3 is L-shaped, so that the handheld part 1-1 and the operating part 1-2 are arranged on two planes parallel to each other, and the nerve stripping operation is conveniently performed after the guide needle 4 and the shell 2 are assembled on the nerve stripper.

Example 2

The present embodiment provides a nerve dissector fixing device, including the nerve dissector described in embodiment 1, further including a housing 2, a push rod 3 and a guide pin 4, with reference to fig. 3 to 7.

The shell 2 comprises an opening 2-1, a mounting hole 2-2 and a notch, wherein the opening 2-1 and the notch are arranged on two mutually parallel surfaces, so that the nerve dissector can conveniently penetrate along the opening 2-1 and penetrate out of the notch. The notch surface is a surface abutting against the skin and is arranged to be a plane.

The notches comprise a first notch 2-3 and a second notch 2-5, the width of the first notch 2-3 is the same as the wall thickness of the operation part 1-2, the length of the first notch 2-3 is 1mm larger than the maximum width of the operation part, a nerve dissector can conveniently pass through the first notch 2-3, and the nerve dissector is fixed in the first notch.

The width of second notch 2-5 is less than the diameter of guide pin 4, second notch 2-5 is kept away from limiting plate 2-6 one side and is provided with semicircle orifice 2-4, second notch 2-5 with the semicircle orifice 2-4 space sum equals the diameter of guide pin 4, be convenient for guide pin 4 passes along semicircle orifice 2-4, and will guide pin 4 is fixed in the semicircle orifice 2-4.

A limiting plate 2-6 is arranged between the first notch 2-3 and the second notch 2-5, the limiting plate 2-6 is fixed on the shell and is arranged in the notch to divide the notch into a first notch 2-3 and a second notch 2-5; the limiting plate is a flat plate, one surface of the limiting plate is attached to the second surface, the other surface of the limiting plate is attached to the guide pin, and the guide pin is extruded, so that the shell 2 and the nerve dissector 1 are fixed on the guide pin 4.

Preferably, the limiting plate is a flexible plate, specifically, the limiting plate is a plate-shaped structure made of plastic or thin-walled metal, has certain toughness, and is favorable for deforming and extruding the guide pin 4, and the guide pin 4 is fixed on the housing 2.

Preferably, one end, far away from the limiting plate 2-6, of the second notch 2-5 is provided with a semicircular hole 2-4, and the semicircular hole 2-4 is matched with the guide pin 4 so as to guide the guide pin 4 to slide along the semicircular hole 2-4 and fix the guide pin 4 in the semicircular hole 2-4.

The shell 2 is a semicircular cone and is configured into a semicircular cone-shaped cavity; the guide pin 4 can be guided to penetrate out of the semicircular holes 2-4.

The mounting hole 2-2 is arranged on a surface perpendicular to the opening 2-1, the push rod 3 is arranged in the mounting hole 2-2, the inner diameter of the mounting hole 2-2 is the same as the outer diameter of the push rod 3, the tail end of the mounting hole 2-2 is provided with a limiting ring, and the limiting ring is matched with the rod body 3-2, so that the push rod 3 can penetrate out along the mounting hole 2-2, the push rod 3 can be limited, and the push rod 3 is prevented from being separated from the mounting hole.

Preferably, an annular groove is circumferentially arranged on the mounting hole 2-2, the width of the annular groove is the same as the diameter of the jumping beans, and the depth of the annular groove is smaller than the diameter of the jumping beans; facilitating the mounting and dismounting of the push rod 3.

Preferably, the 2-2 circumference of mounting hole is provided with 3 rings of annular grooves, when jumping beans and terminal annular groove looks butt, push rod 3 with casing 2 looks parallel and level, push rod 3 with 2 visual effect of casing wholly set up, the push rod does not expose, avoids fish tail patient or operating personnel.

The push rod comprises a pressing sleeve 3-1 and a rod body 3-2, and the rod body 3-2 is slidably mounted on the pressing sleeve 3-1; specifically, the circumferential direction of the rod body 3-2 is provided with a limiting edge 3-3, the limiting edge 3-3 is matched with the shape and size of the inner wall of the pressing sleeve, the end part of the pressing sleeve 3-1 is also provided with an annular bulge for limiting the rod body 3-2, and the rod body 3-2 is prevented from slipping along the pressing sleeve 3-1.

Preferably, one end of the rod body 3-2 is provided with a limiting groove 3-5, and the other end is provided with an arc bulge; a first spring 3-4 is arranged in the limiting groove 3-5; the rod body 3-2 is in an extending state in a natural state, namely the limiting edge 3-3 is abutted with the annular bulge. On one hand, the rod body 3-2 can abut against a nerve dissector, and the nerve dissector and the shell body 2 are fixed on the guide needle 4; on the other hand, when the nerve dissecting operation is required, the push rod 3 and the operation part have a movement space when the push sleeve 3-1 is pushed, and the nerve dissector is separated from the housing.

The other end of the rod body is provided with an arc bulge, the diameter of the rod body 3-2 is larger than that of the arc bulge, and the arc bulge is matched with the arc groove 1-4; the fixation of the nerve dissector is more stable and reliable.

Preferably, blind holes for installing the second springs 3-6 are formed in the circumferential direction of the pressing sleeve 3-1, and at least two blind holes are formed in the blind holes and are arranged oppositely; one end of the second spring 3-6 is fixedly connected with the pressing sleeve 3-1, and the other end of the second spring is fixedly provided with a jumping bean 3-7; in a natural state, the jumping beans 3-7 are arranged outside the pressing sleeve 3-1, and the jumping beans 3-7 can be completely placed in the blind hole when being stressed circumferentially.

When the push rod 3 is installed, the rod body 3-2 is placed in the installation hole 2-2, the pressing sleeve 3-1 is pushed, the jumping beans 3-7 arranged in the pressing sleeve 3-1 are completely arranged in the blind hole, the second spring is in a compressed state, when the jumping beans 3-7 are located in the annular groove at the head end, the second spring restores to a natural state, the jumping beans 3-7 are abutted to the annular groove, and a 'click' sound can be generated at the same time.

When an operator needs to release hands, the guide pin 4 penetrates along the second notch 2-5 and the nerve dissector 1 along the first notch 2-3, and the shell 2 is abutted to the skin; pushing the pressing sleeve 3-1 to enable the jumping beans 3-7 arranged in the pressing sleeve 3-1 to be completely arranged in the blind hole, enabling the second spring to be in a compressed state, enabling the second spring to restore to a natural state when the jumping beans 3-7 are located in the tail end annular groove, enabling the jumping beans 3-7 to be abutted against the annular groove, and enabling a 'clicking' sound to appear at the same time; at the moment, the arc protrusion of the push rod 3 is abutted against the arc groove 1-4, and the push rod 3 fixes the nerve dissector 1 on the guide pin 4, so that the nerve dissector is convenient and rapid to fix and stable.

When an operator continues to perform surgical operation, the pressing sleeve 3-1 is pressed down to retreat out of the mounting hole 2-2, the push rod 3 pushes the push rod to the direction close to the annular groove at the head end under the action of elastic force of the first spring 3-4, the jumping beans 3-7 are completely arranged in the blind hole, the second spring is in a compressed state, when the jumping beans 3-7 are positioned in the middle annular groove, the second spring restores to a natural state, the jumping beans 3-7 are abutted to the annular groove, and a 'click' sound can be generated at the same time; at the moment, the arc protrusion of the push rod 3 and the arc groove 1-4 are in a separated state, and the shell 2 is pulled out of the nerve dissector 1, so that the operation can be continued; the fixing device is convenient to operate, stable in fixing and high in reliability.

Example 3

A method of fixing a nerve dissector, comprising the nerve dissector fixing device according to embodiment 2. The fixing method comprises the following steps:

s1: the nerve dissector and the guide pin are put in and out along one side of the opening of the shell, the nerve dissector penetrates out from one side of the first notch, and the guide pin penetrates out from one side of the second notch;

s2, attaching a second surface of the nerve dissector to the limiting plate, and simultaneously attaching the other surface of the limiting plate to the guide pin;

s3: the shell is attached to the skin of a human body, and the arc groove of the nerve dissector and the arc groove of the push rod are in opposite positions;

s4: and putting the push rod into the mounting hole, pushing the pressing sleeve to enable the jumping beans to be arranged in the tail end annular groove, enabling the arc protrusion of the push rod to be abutted against the arc groove, and completely fixing the nerve dissector on the guide needle.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A nerve dissector, comprising:

the handheld part (1-1), the handheld part (1-1) is a flat plate body, and at least one surface of the handheld part is provided with an anti-skid structure;

the operation part (1-2), the operation part (1-2) is an isosceles triangle, and the front end of the operation part (1-2) is provided with a stripping head;

the connecting part (1-3), the connecting part (1-3) connects the handheld part (1-1) and the operating part (1-2).

2. The nerve dissector of claim 1, characterized in that the operating portion (1-2) comprises a first face and a second face;

the first surface is provided with a plurality of arc grooves (1-4), and the second surface is a plane.

3. The nerve dissector of claim 1 wherein the dissector head is provided with a tip and is bent in a direction toward the first face.

4. A nerve dissector fixture including a nerve dissector of any one of claims 1 to 3, comprising:

the nerve dissector comprises a shell (2), wherein the shell (2) comprises an opening (2-1), a mounting hole (2-2) and a notch, the nerve dissector (1) penetrates in the shell along the opening (2-1), the notch penetrates out of the shell, the surface of the notch is a plane, and the mounting hole (2-2) is arranged on the surface perpendicular to the opening (2-1);

the push rod (3), the push rod (3) comprises a pressing sleeve (3-1) and a rod body (3-2), the rod body (3-2) is slidably mounted on the pressing sleeve (3-1), and the pressing sleeve (3-1) is matched with the mounting hole (2-2);

the nerve dissector comprises a guide pin (4), wherein the guide pin (4) is of a long straight cylinder structure and is used for fixing the nerve dissector (1).

5. The nerve dissector fixation device of claim 4 wherein: the mounting hole (2-2) is provided with an annular groove, a limiting ring is arranged in the hole, and the limiting ring is matched with the rod body.

6. The nerve dissector fixation device of claim 5 wherein: the periphery of the pressing sleeve (3-1) is provided with a second spring (3-6), a jumping bean (3-7) is fixed on the second spring (3-6), and the diameter of the jumping bean (3-7) is matched with the width of the annular groove.

7. The nerve dissector fixation device of claim 4 wherein: the rod body (3-2) is circumferentially provided with a limiting edge (3-3), and the limiting edge (3-3) is matched with the hole wall of the pressing sleeve (3-1);

the rod body (3-2) is further provided with a limiting groove (3-5), and a first spring (3-4) is installed in the limiting groove (3-5).

8. The nerve dissector fixation device of claim 4 wherein: the notches comprise a first notch (2-3) and a second notch (2-5), the width of the first notch (2-3) is the same as the wall thickness of the operation part (1-2), and the width of the second notch (2-5) is smaller than the diameter of the guide pin (4).

9. The nerve dissector fixation device of claim 8 wherein: and a limiting plate (2-6) is arranged between the first notch (2-3) and the second notch (2-5), is a flexible plate and is attached to the second surface.

10. The nerve dissector fixation device of claim 9 wherein: and one end of the second notch (2-5) far away from the limiting plate (2-6) is provided with a semicircular hole (2-4) for fixing the guide pin (4).