CN212755812U - Hook knife for stripping and cutting perineural ligament - Google Patents
Hook knife for stripping and cutting perineural ligament Download PDFInfo
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- CN212755812U CN212755812U CN202020203889.4U CN202020203889U CN212755812U CN 212755812 U CN212755812 U CN 212755812U CN 202020203889 U CN202020203889 U CN 202020203889U CN 212755812 U CN212755812 U CN 212755812U
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Abstract
The utility model relates to the technical field of medical instruments, and discloses a hook knife for stripping and cutting ligaments around nerves, which comprises a knife handle, a knife head and a blade; the tool bit is arranged at one end of the tool handle, the tool bit is in a hook shape, and the front-back diameter of the tool bit is not more than the front-back diameter of the tool handle; the blade is arranged on the inner side of the bevel of the cutter head. Based on the structure, when the percutaneous plate gap approach endoscopic surgery is carried out, the ligamentum flavum is picked up by using the tool bit of the hook knife under the assistance of the function of amplifying and monitoring the endoscope, and the ligamentum flavum is cut synchronously by the blade, so that the operation is simple and convenient, and the operability requirement on a surgical operator is reduced; the blade is hidden inside the break angle of the cutter head, so that the risk of damaging the spinal cord and nerves in the vertebral canal is reduced, and the safety of the operation is improved; in addition, the front and back diameters of the tool bit are not larger than those of the tool handle, so that the hooking tool has low requirement on minimally invasive pipelines, is convenient for operation in the minimally invasive pipelines, and accords with the minimally invasive concept.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a collude sword for peeling off and cut ligament around nerve.
Background
The endoscopic translaminectomy is one of the best minimally invasive surgical techniques for treating lumbar intervertebral disc protrusion at present, and the most common operation mode of the technique is that the ligamentum flavum is lifted by a small drag hook under the assistance of the function of the endoscopic magnification monitoring, and then the ligamentum flavum is slowly cut by a sharp knife. The above mode is complex to operate, has high requirements on the operability of an operator, has the risk of damaging the spinal cord and nerves in the vertebral canal, and has lower safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a collude sword for peeling off and cutting ligament around nerve that operation convenience, factor of safety are high.
In order to achieve the above object, the present invention provides a hook cutter for stripping and cutting a ligament around a nerve, comprising:
a knife handle;
the tool bit is arranged at one end of the tool handle, the tool bit is in a hook shape, and the front and back diameters of the tool bit are not larger than those of the tool handle;
the blade is arranged on the inner side of the bevel of the cutter head.
Preferably, the projection of the cutter head on the cross section of the cutter handle does not exceed the range of the cross section of the cutter handle.
Preferably, the break angle of the cutter head is a right angle.
Preferably, the folding angle of the cutter head is an obtuse angle.
Preferably, the surface of the tool bit is a rounded surface.
Preferably, the hook knife is of an integrated structure.
Preferably, the hooking knife is made of stainless steel.
The utility model provides a collude sword for peeling off cutting ligament around nerve compares with prior art, and its beneficial effect lies in:
the utility model provides a hook knife for stripping and cutting the perineural ligament, which comprises a knife handle, a knife head and a blade; the tool bit is arranged at one end of the tool handle, the tool bit is in a hook shape, and the front-back diameter of the tool bit is not more than the front-back diameter of the tool handle; the blade is arranged on the inner side of the bevel of the cutter head. Based on the structure, when the percutaneous plate gap approach endoscopic surgery is carried out, the ligamentum flavum is picked up by using the tool bit of the hook knife under the assistance of the function of amplifying and monitoring the endoscope, and the ligamentum flavum is cut synchronously by the blade, so that the operation is in place in one step, and the operation is simple and convenient, thereby reducing the operational requirements on operators; the blade is hidden inside the break angle of the cutter head, so that the risk of damaging the spinal cord and nerves in the vertebral canal is reduced, and the safety of the operation is improved; in addition, the front and back diameters of the tool bit are not larger than those of the tool handle, so that the hooking tool has low requirement on minimally invasive pipelines, is convenient for operation in the minimally invasive pipelines, and accords with the minimally invasive concept.
Drawings
Fig. 1 is a schematic structural view of a hook knife (the bevel of the knife head is a right angle) according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a hook knife (the bevel of the knife head is an obtuse angle) according to an embodiment of the present invention.
In the figure: 1. a knife handle; 2. a cutter head; 3. a blade.
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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a hook knife for stripping and cutting a ligament around a nerve, which mainly includes a knife handle 1, a knife head 2 and a blade 3; the tool bit 2 is arranged at one end of the tool handle 1, the tool bit 2 is in a hook shape, and the front-back diameter of the tool bit 2 is not larger than the front-back diameter of the tool handle 1; the blade 3 is arranged inside the bevel of the tool head 2.
Based on the structure, when the percutaneous plate gap approach endoscopic surgery is carried out, the ligamentum flavum is picked up only by utilizing the tool bit 2 of the hook knife and the blade 3 can synchronously cut the ligamentum flavum under the assistance of the function of amplifying and monitoring the endoscope, the operation is in place in one step, and the operation is simple and convenient, thereby reducing the operational requirements on operators; the blade 3 is hidden inside the break angle of the cutter head 2, so that the risk of damaging spinal cords and nerves in the vertebral canal is reduced, and the safety of the operation is improved; in addition, the front and back diameters of the tool bit 2 are not larger than the front and back diameters of the tool handle 1, so that the hooking tool has low requirement on minimally invasive pipelines, is convenient for operation in the minimally invasive pipelines, and accords with the minimally invasive concept. It should be noted that the hook knife can also be used for open surgery.
Optionally, as shown in fig. 1 and fig. 2, as a specific embodiment of the utility model for a hook knife for stripping and cutting the perineural ligament, the projection of the tool bit 2 on the cross section of the tool shank 1 does not exceed the range of the cross section of the tool shank 1. Therefore, the tool bit 2 can further reduce the damage to the spinal cord and nerves in the vertebral canal, and improve the safety of the operation.
Optionally, as shown in fig. 1 and fig. 2, as a specific embodiment of the utility model for a hook knife for stripping and cutting ligament around nerve, the break angle of the knife head 2 is a right angle or an obtuse angle, and the operator can select hook knives with different break angles according to actual conditions, so as to improve the efficiency of the operation.
Alternatively, as shown in fig. 1 and 2, as a specific embodiment of the utility model for a hook blade for stripping and cutting the perineural ligament, the surface of the cutting head 2 is a smooth surface. Therefore, when the tool bit 2 is used for searching for the ligamentum flavum in an operation, the tool bit 2 can not damage other parts nearby the ligamentum flavum, and the safety of the operation is further improved.
Optionally, as shown in fig. 1 and fig. 2, as a specific embodiment of the utility model, the hook knife is an integrated structure and is convenient for manufacturing.
Optionally, as the utility model provides a concrete implementation mode of colluding sword for peeling off cutting nerve surrounding ligament, the material that colludes the sword is the stainless steel, so can guarantee to collude the quality and the intensity of sword, improves its security and reliability.
To sum up, the embodiment of the utility model provides a hook knife for stripping and cutting the peripheral ligaments of nerves, which mainly comprises a knife handle 1, a knife head 2 and a blade 3; the tool bit 2 is arranged at one end of the tool handle 1, the tool bit 2 is in a hook shape, and the front-back diameter of the tool bit 2 is not larger than the front-back diameter of the tool handle 1; the blade 3 is arranged inside the bevel of the tool head 2. Compared with the prior art, the hook knife has the advantages of convenience in operation, high safety factor and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (3)
1. A hook blade for dissecting a perineural ligament, comprising:
a knife handle;
the tool bit is arranged at one end of the tool handle, the tool bit is in a hook shape, and the front and back diameters of the tool bit are not larger than those of the tool handle;
the blade is arranged on the inner side of the bevel of the cutter head;
the projection of the cutter head on the cross section of the cutter handle does not exceed the range of the cross section of the cutter handle;
the break angle of the cutter head is a right angle or an obtuse angle;
the surface of the cutter head is a smooth surface.
2. The hook blade for denervating perineural ligaments of claim 1, characterized in that:
the hook cutter is of an integrated structure.
3. The hook blade for denervating perineural ligaments of claim 1, characterized in that:
the hooking knife is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020203889.4U CN212755812U (en) | 2020-02-24 | 2020-02-24 | Hook knife for stripping and cutting perineural ligament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020203889.4U CN212755812U (en) | 2020-02-24 | 2020-02-24 | Hook knife for stripping and cutting perineural ligament |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212755812U true CN212755812U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020203889.4U Active CN212755812U (en) | 2020-02-24 | 2020-02-24 | Hook knife for stripping and cutting perineural ligament |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212755812U (en) |
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2020
- 2020-02-24 CN CN202020203889.4U patent/CN212755812U/en active Active
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