CN112155662A - Knife cutting type nerve dissector and use method thereof - Google Patents
Knife cutting type nerve dissector and use method thereof Download PDFInfo
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- CN112155662A CN112155662A CN202010999261.4A CN202010999261A CN112155662A CN 112155662 A CN112155662 A CN 112155662A CN 202010999261 A CN202010999261 A CN 202010999261A CN 112155662 A CN112155662 A CN 112155662A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
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Abstract
The invention discloses a knife-cutting nerve dissector and a using method thereof, and particularly relates to the technical field of medical instruments. The invention provides a knife cutting type nerve dissector and a using method thereof.A dissector main body consists of two ends of a grab handle which are respectively connected with a flat dissecting part and a sharp dissecting part, wherein a cavity is arranged in the front end of the grab handle, a fixed block is arranged on a rod body of the sharp dissecting part, a spring switch is arranged in the cavity, a flexible rod is arranged at the part of a connecting rod in the cavity, and the flexible rod is connected with the bottom end of the spring switch; the cutting knife is driven to do cutting motion to the stripping head at the front end of the nerve stripper under the action of the connecting rod and the thrust spring by pressing a button of the spring switch, so as to cut the yellow ligament lamp tissue; namely, one person can use the nerve dissector of the invention to cut the soft tissue on the surface of the nerve without the help of other operating doctors, and the other hand can operate other operating tools such as an aspirator, thus saving medical resources.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a knife-cutting nerve dissector and a using method thereof.
Background
The common nerve dissector used at present is usually made of a slender flat metal rod, and mainly has the functions of separating the adhesion between nerve tissues or dura mater and ligaments and soft tissues and retracting the nerve or dura mater, and the operation of the nerve dissector has the characteristics of lightness and delicacy. In the spinal surgery, when nerve decompression is needed, a doctor holds the middle part of the nerve dissector, pokes the nerve with the head of the nerve dissector or separates adhesion between the nerve and soft tissue, then uses other tools to cut off ligaments pressing the nerve, such as ligamentum flavum, and for some narrow parts, when the nerve dissector is used for separation, the pressure-causing objects need to be cut off at the same time.
The problems that exist are that:
1. due to the limited operation space, the nerve dissector is difficult to separate and simultaneously use another tool to incise soft tissues on the surface of the nerve, and when other surgical tools are needed, other surgeons have to help, so that medical resources are wasted.
2. When the cutting space is less, other surgical tools are needed for cutting, thereby undoubtedly increasing the difficulty of surgical operation, reducing the surgical efficiency and easily causing nerve injury to patients.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a knife-cutting nerve dissector and a using method thereof, and the problems are solved by designing the nerve dissector with a cutting function.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a knife cutting type nerve dissector comprises a dissector main body and a knife cutting type nerve dissector, wherein the dissector main body is composed of a holding handle, a flat dissecting part and an acute dissecting part which are respectively connected with two ends of the holding handle, a cavity is arranged in the front end of the holding handle, a fixing block is arranged on the rod body of the acute dissecting part, the fixing block is in a transverse hollow cylindrical shape, a connecting rod penetrates through the hollow part, the other end of the connecting rod is arranged in a slideway in the cavity, a spring switch is arranged in the cavity, the part, located in the cavity, of the connecting rod is provided with a flexible rod connected with the bottom end of the spring switch, a guide block is arranged in the cavity, the main body of the guide block is in a hollow cylindrical shape, the hollow part penetrates through the flexible rod, a thrust spring is arranged in the slideway, one end of the thrust spring is connected with a stop block of the connecting, the cutter is parallel to the stripping head and the length of the cutter is shorter than that of the stripping head, and an inwardly concave groove 109 is formed at the position where the stripping head 103 faces the cutter 4.
As another preferable mode, when the connecting rod moves to the rightmost side, the minimum width between the cutter and the stripping head is 1.5 CM.
As another preferable mode, two thrust springs are provided at vertically symmetrical positions.
As another preferred mode, the spring switch is composed of a button, a push rod, a sliding grabbing sleeve, a guide rail, a spring and a brake plate, the matching position of the push rod and the sliding grabbing sleeve is arranged in the guide rail, the bottom end of the push rod is sleeved with a bottom end spring, and the bottom end of the push rod is sleeved with a top end spring. The working principle is as follows: the top end push rod is pressed, the push rod pushes the sliding claw sleeve to move to the top end position of the bottom of the guide rail, the sliding claw sleeve rotates towards the right side in a clockwise mode under the pushing of the bottom end spring, the push rod rebounds upwards under the action of the top spring, the sliding claw sleeve continues to rotate towards the right side after passing a critical point and is clamped at the guide rail, the brake block moves downwards, the flexible rod is connected to the right side of the brake block, the flexible rod is driven to move downwards, under the guiding of the guide block, the flexible rod pulls the connecting rod to move leftwards, the front-end cutting knife is separated, the push rod is pressed again, the push rod pushes the sliding claw to rotate, the sliding claw sleeve falls into a deeper guide groove in the guide rail, the brake block is withdrawn, the flexible rod moves upwards to return to the original state, the thrust spring pushes the connecting rod.
In another preferred mode, the cutting knife and the buttons of the spring switch are respectively arranged on the front side and the back side of the stripper main body.
As another preferred mode, the flexible rod is connected to the bottom end of the guide rail.
As another preferred mode, the outer wall of the grab handle is provided with anti-skid grains.
As another preferable mode, the inner cylindrical walls of the fixed block and the guide block are smooth.
A use method of the knife cutting type nerve dissector is characterized in that: when the cutting knife is used, the grab handle is held by one hand, the button of the spring switch is pressed down, the cutting knife at the front end is retracted, the sharp peeling part at the front end is placed under the yellow ligament to be cut, the yellow ligament is cut, the sharp peeling part is pressed, the button is pressed again, the push rod pushes the sliding claw to rotate, the sliding claw sleeve falls into a deeper guide groove in the guide rail, the brake plate is retracted, the flexible rod moves upwards to change into the original state, the thrust spring pushes the connecting rod through the stop block, and the cutting knife performs cutting movement to the peeling head to cut tissues such as the yellow ligament.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a knife cutting type nerve stripper which comprises the following components:
1. the nerve dissector with the cutting function is designed, and the cutting knife is driven to perform cutting motion to the dissecting head at the front end of the nerve dissector under the action of the connecting rod and the thrust spring by pressing a button of the spring switch, so that the yellow ligament lamp tissue is cut; namely, one operator can cut the soft tissue on the surface of the nerve only by using the nerve dissector of the invention without the help of other operators, and simultaneously, the other hand can operate other surgical tools such as an aspirator, thus saving medical resources.
2. Meanwhile, when a small operation space is met, only one tool needs to be put in, so that the operation difficulty is reduced, the operation efficiency is improved, and the nerve injury possibly caused to a patient is reduced.
3. More importantly, the invention has simple structure and convenient operation, and is easy to be popularized and applied in various medical and related technical fields.
Of course, it is not necessary for any product that embodies the invention to achieve all of the above-described advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a knife-cut nerve dissector according to the present invention;
FIG. 2 is a schematic view of a portion of the connecting rod of the present invention;
FIG. 3 is a schematic view of the structure of the components in the cavity according to the present invention;
FIG. 4 is a schematic structural diagram of a spring switch according to the present invention;
FIG. 5 is an exploded view of the major components of the spring switch of the present invention;
FIG. 6 is a schematic structural view of the thrust spring and the stopper of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-grip handle, 101-flat stripper, 102-sharp section, 103-stripper head, 104-cavity, 105-slide, 106-fixed block, 107-guide block, 108-space, 109-groove, 2-connecting rod, 201-flexible rod, 202-stop, 203-thrust spring, 3-spring switch, 300-button, 301-push rod, 302-sliding grab, 303-guide rail, 304-spring, 305-brake plate, 4-cutter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
As shown in fig. 1-6
A knife cutting type nerve dissector comprises a dissector body and a knife cutting type nerve dissector, wherein the dissector body is composed of a flat dissecting part 101 and a sharp dissecting part 102 which are respectively connected with two ends of a grab handle 1, a cavity 104 is arranged in the front end of the grab handle 1, a fixing block 106 is arranged on the rod body of the sharp dissecting part 102, the fixing block 105 is in a transverse hollow cylinder shape, and a connecting rod 2 penetrates through the hollow part;
the other end of the connecting rod 2 is arranged in a slide way 105 in a cavity 104, a spring switch 3 is arranged in the cavity 104, a flexible rod 201 is arranged at the part of the connecting rod 2 in the cavity 104, and the flexible rod 201 is connected to the bottom end of the spring switch 3;
the cavity is internally provided with a guide block 107, the main body of the guide block 107 is hollow cylindrical, the interior of the guide block is hollow and penetrates through the flexible rod 201, the slide rail 105 is internally provided with a thrust spring 203, one end of the thrust spring 203 is connected to the stop block 202 of the connecting rod 2, the far end of the connecting rod 2 is connected with a cutting knife 4, and the top end of the spring switch 3 is communicated with the grab handle 1 to be arranged outside.
As another preferable mode, the front end of the sharp peeling part 102 is provided with a peeling head 103 perpendicular thereto, the cutting knife 4 is parallel to the peeling head 103, the length of the cutting knife 4 is shorter than that of the peeling head 103, and the peeling head 103 is provided with a concave groove 109 inwardly at a position facing the cutting knife 4.
As another preferable mode, when the cutter blade 4 moves to the rightmost side, the minimum width b of the cutter blade and the peeling head 103 is 1.5 mm.
As another preferable scheme, two thrust springs 304 are provided at vertically symmetrical positions.
As another preferable scheme, the spring switch 3 is composed of a button 300, a push rod 301, a sliding grip sleeve 302, a guide rail 303, a spring 304 and a brake plate 305, the matching position of the push rod 301 and the sliding grip sleeve 302 is in the guide rail, the bottom end of the push rod is sleeved with the bottom end spring 304, and the bottom end of the push rod is sleeved with the top end spring 305. The working principle is as follows: the top end push rod 301 is pressed, the push rod 301 pushes the sliding claw sleeve to move to the top end position of the bottom of the guide rail, under the pushing of the bottom end spring 304, the sliding claw sleeve 302 rotates towards the right side in a clockwise direction, the push rod rebounds upwards under the action of the top spring 306, after a critical point is passed, the sliding claw sleeve 302 continues to rotate towards the right side, the sliding claw sleeve is clamped at the guide rail 303, the brake block 305 moves downwards, the flexible rod 201 is connected to the right side of the brake block 305, the flexible rod 201 is driven to move downwards, under the guiding of the guide block 107, the flexible rod 201 pulls the connecting rod to move leftwards, the front end cutting knife 4 is separated, the push rod 301 is pressed again, the push rod 301 pushes the sliding claw to rotate, the sliding claw sleeve falls into a deeper guide groove in the guide rail 303, the brake block 305 is retracted, the flexible rod 201 moves upwards to change into an original state, the thrust spring 203 pushes.
As another preferable scheme, the flexible rod 201 is connected to the bottom end of the guide rail 303 of the spring switch 3.
As another preferred scheme, the outer wall of the grab handle 1 is provided with anti-skid lines.
As another preferable scheme, the inner cylindrical walls of the fixing block 106 and the guide block 107 are smooth.
The technical scheme of the invention is explained by combining the specific embodiment as follows:
example 1
The utility model provides a sword cutting formula nerve detacher, detacher main part is connected partial peeling means 101, sharp peeling means 102 by 1 both ends of grab handle respectively and is constituteed, the inside cavity 104 that is equipped with of grab handle 1 front end, sharp peeling means 102's the pole body is equipped with fixed block 106, fixed block 105 is horizontal hollow circular cylinder, and hollow portion has passed connecting rod 2, the connecting rod 2 other end sets up in the slide 105 in cavity 104, be equipped with spring switch 3 in the cavity 104.
Example 2
The part of connecting rod 2 that is located cavity 104 is equipped with flexible pole 201, flexible pole 201 is connected in spring switch 3 bottom, be equipped with guide block 107 in the cavity, guide block 107 main part is hollow circular cylinder, and the inside is hollow passes flexible pole 201, be equipped with thrust spring 203 in the slide 105, thrust spring 203 one end is connected on the dog 202 of connecting rod 2, the distal end of connecting rod 2 has connect cutting knife 4, spring switch 3's top is led out grab handle 1 and is put the external world. The front end of the sharp stripping part 102 is provided with a stripping head 103 vertical to the sharp stripping part, the cutting knife 4 is parallel to the stripping head 103, when the connecting rod of the cutting knife 4 moves to the rightmost side, the minimum width b of the cutting knife and the stripping head 103 is 1.5mm, two thrust springs 304 are arranged at the symmetrical positions in the vertical direction, and the springs normally push the connecting rod to move to the right side.
Example 3
Based on examples 1-3, a knife-cut nerve dissector for use in the removal of ligamentum flavum which exerts compression on the nerve.
In specific implementation, one hand holds the handle 1, the button 300 of the spring switch 3 is pressed, the cutting knife 4 at the front end is retracted, the sharp peeling part 102 at the front end is placed under the yellow ligament to be cut, the yellow ligament is positioned between the cutting part 4 and the sharp peeling part 102, the button 300 is pressed again, the push rod 301 pushes the sliding claw to rotate, the sliding claw sleeve falls into a deeper guide groove in the guide rail 303, the braking plate 305 is retracted, the flexible rod 201 moves upwards to change to the original state, the thrust spring 203 pushes the connecting rod 2 through the stop block 202, and the cutting knife 4 performs cutting movement to the peeling head 103 to cut the yellow ligament.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A knife-cutting type nerve dissector is characterized in that: the stripper main body is composed of a handle, wherein two ends of the handle are respectively connected with a flat stripping part and an acute stripping part, a cavity is arranged in the front end of the handle, a fixing block is arranged on a rod body of the acute stripping part, the fixing block is in a transverse hollow cylindrical shape, and a connecting rod penetrates through the hollow part;
the other end of the connecting rod is arranged in a slide way in the cavity, a spring switch is arranged in the cavity, a flexible rod is arranged at the part of the connecting rod in the cavity, and the flexible rod is connected to the bottom end of the spring switch;
the cavity is internally provided with a guide block, the main body of the guide block is hollow cylindrical, the interior of the guide block is hollow and penetrates through the flexible rod, a thrust spring is arranged in the slideway, one end of the thrust spring is connected to a stop block of a connecting rod, the far end of the connecting rod is connected with a cutting knife, and the top end of the spring switch is communicated with the outside through the handle.
2. The knife-cut nerve dissector of claim 1, wherein: the front end of the sharp peeling part is provided with a peeling head vertical to the sharp peeling part, the cutting knife is parallel to the peeling head, the length of the cutting knife is shorter than that of the peeling head, the cutting knife and the button of the spring switch are respectively arranged on the front side and the back side of the main body of the peeling part, and the position of the peeling head facing the cutting knife is provided with an inward concave groove.
3. The knife-cut nerve dissector of claim 2, wherein: when the connecting rod moves to the rightmost side, the minimum width of the cutting knife and the stripping head is 1.5 mm.
4. The knife-cut nerve dissector of claim 1, wherein: two thrust springs are arranged at the up-down symmetrical positions.
5. The knife-cut nerve dissector of claim 1, wherein: the spring switch is composed of a button, a push rod, a sliding grabbing sleeve, a guide rail, a spring and a brake plate, the matching position of the push rod and the sliding grabbing sleeve is arranged in the guide rail, the bottom end of the push rod is sleeved with the bottom end spring, and the bottom end of the push rod is sleeved with the top end spring. The working principle is as follows: the top end push rod is pressed, the push rod pushes the sliding claw sleeve to move to the top end position of the bottom of the guide rail, the sliding claw sleeve rotates towards the right side in a clockwise mode under the pushing of the bottom end spring, the push rod rebounds upwards under the action of the top spring, the sliding claw sleeve continues to rotate towards the right side after passing a critical point and is clamped at the guide rail, the brake block moves downwards, the flexible rod is connected to the right side of the brake block, the flexible rod is driven to move downwards, under the guiding of the guide block, the flexible rod pulls the connecting rod to move leftwards, the front-end cutting knife is separated, the push rod is pressed again, the push rod pushes the sliding claw to rotate, the sliding claw sleeve falls into a deeper guide groove in the guide rail, the brake block is withdrawn, the flexible rod moves upwards to return to the original state, the thrust spring pushes the connecting rod.
6. The knife-cut nerve dissector of claim 1, wherein: the flexible rod is connected to the bottom end of the guide rail of the spring switch.
7. The knife-cut nerve dissector of claim 1, wherein: the outer wall of the grab handle is provided with anti-skid grains.
8. The knife-cut nerve dissector of claim 1, wherein: the inner walls of the cylinders of the fixed block and the guide block are smooth.
9. A use method of the knife-cutting nerve dissector is characterized in that: when the cutting knife is used, the grab handle is held by one hand, the button of the spring switch is pressed, the cutting knife at the front end is retracted, the sharp peeling part at the front end is placed under a yellow ligament to be cut, the yellow ligament is cut, the sharp peeling part is pressed again, the button is pressed again, the push rod pushes the sliding claw to rotate, the sliding claw sleeve falls into a deeper guide groove in the guide rail, the brake plate is retracted, the flexible rod moves upwards to change into the original state, the thrust spring pushes the connecting rod through the stop block, and the cutting knife performs cutting movement to the peeling head to cut the yellow ligament.
10. Use of the knife-cut nerve dissector of claims 1-9 for the ablation of nerve soft tissue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999261.4A CN112155662A (en) | 2020-09-22 | 2020-09-22 | Knife cutting type nerve dissector and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999261.4A CN112155662A (en) | 2020-09-22 | 2020-09-22 | Knife cutting type nerve dissector and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112155662A true CN112155662A (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010999261.4A Pending CN112155662A (en) | 2020-09-22 | 2020-09-22 | Knife cutting type nerve dissector and use method thereof |
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| CN (1) | CN112155662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948102A (en) * | 2022-04-26 | 2022-08-30 | 首都医科大学宣武医院 | From integrative micro-son of peeling off of separation cutting of taking safety protection |
-
2020
- 2020-09-22 CN CN202010999261.4A patent/CN112155662A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114948102A (en) * | 2022-04-26 | 2022-08-30 | 首都医科大学宣武医院 | From integrative micro-son of peeling off of separation cutting of taking safety protection |
| CN114948102B (en) * | 2022-04-26 | 2024-04-19 | 首都医科大学宣武医院 | Integrated separating and cutting micro stripper with safety protection |
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