CN213910426U - Novel combined cervical vertebra posterior longitudinal ligament hook knife - Google Patents
Novel combined cervical vertebra posterior longitudinal ligament hook knife Download PDFInfo
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- CN213910426U CN213910426U CN202022242606.XU CN202022242606U CN213910426U CN 213910426 U CN213910426 U CN 213910426U CN 202022242606 U CN202022242606 U CN 202022242606U CN 213910426 U CN213910426 U CN 213910426U
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- cutter
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- blunt
- longitudinal ligament
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Abstract
The utility model discloses a novel combined cervical posterior longitudinal ligament hooking knife, which comprises a cutter, a blunt head hooking knife, a cutter handle, a hooking knife handle and a threaded handle; the cutter is in threaded connection with the threaded handle through a cutter handle, and the cutter handle is arranged in the cutter hooking handle; the cutter is arranged on one side of the blunt-end hooking cutter, which is far away from the thread handle, and the cutter is parallel to the blunt-end hooking cutter. The utility model discloses combination formula cervical vertebra back longitudinal ligament colludes sword is blunt nature when getting into between longitudinal ligament and the dura mater, through the inside sword structure that colludes after the separation, disposable direct incision back longitudinal ligament, convenient operation safety.
Description
Technical Field
The utility model belongs to a ligament colludes sword, concretely relates to novel combination formula cervical vertebra back longitudinal ligament colludes sword.
Background
The anterior cervical surgery is a standard surgical method for treating cervical spondylosis, and a posterior longitudinal ligament is usually cut during the surgery to fully reduce the pressure of a spinal cord. When the existing instrument is used for incision of posterior longitudinal ligament, a blunt posterior longitudinal ligament separator is firstly used for separation between the posterior longitudinal ligament and the spinal cord, and then a sharp blade is used for incision of the posterior longitudinal ligament, but the operation risk is high, the error injury of blood vessels or esophagus around the cervical vertebra operation visual field after dural membrane injury exists, and the psychological pressure of an operator is also high during operation; or after the blunt meningeal hook is used for separation, a sharp posterior longitudinal ligament hook knife is used for incision, but the operation not only needs two separation operations, but also has high risk of dural membrane injury.
Disclosure of Invention
The utility model provides a novel combination formula cervical vertebra posterior longitudinal ligament colludes sword to the not enough of prior art.
A novel combined cervical vertebra posterior longitudinal ligament hooked knife comprises a cutting knife, a blunt hooked knife, a cutting knife handle, a hooked knife handle and a threaded handle; the cutter is in threaded connection with the threaded handle through a cutter handle, and the cutter handle is arranged in the cutter hooking handle; the cutter is arranged on one side of the blunt-end hooking cutter, which is far away from the thread handle, and the cutter is parallel to the blunt-end hooking cutter.
Preferably, one side of the blunt-end hooking knife, which is close to the cutting knife, is provided with a groove, and the cutting edge of the cutting knife can be embedded into the groove.
Preferably, the cutter handle is divided into two sections, namely a first cutter handle and a second cutter handle, wherein the first cutter handle is fixedly connected with the cutter, and the first cutter handle and the second cutter handle form a revolute pair; the tail end of the second knife handle is fixedly connected with the threaded handle, and the outer side of the second knife handle is in threaded connection with the knife hooking handle.
The tail end of the cutter handle is provided with a thread, and a thread pair is formed by the thread and the thread handle; the cutter handle and the hook cutter handle cannot rotate mutually; the thread handle and the knife handle of the hook knife form a revolute pair.
The utility model discloses effect that has for prior art: the combined cervical vertebra posterior longitudinal ligament hook knife is blunt when entering between the posterior longitudinal ligament and the dura mater, and the posterior longitudinal ligament is directly incised at one time through the hook knife structure inside after separation, so that the operation is convenient and safe.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of one of the structures of the present invention;
Detailed Description
As shown in fig. 1, a novel combined cervical posterior longitudinal ligament hooked knife comprises a cutter 1, a blunt hooked knife 2, a cutter handle, a hooked knife handle and a threaded handle 5; the cutter 1 is connected with the thread handle 5 through a cutter handle, and the cutter handle is arranged in the cutter hooking handle; the cutter is arranged on one side of the blunt-end hooking cutter, which is far away from the thread handle, and the cutter is parallel to the blunt-end hooking cutter.
As shown in fig. 2, a novel combined cervical posterior longitudinal ligament hooked knife comprises a cutter 1, a blunt hooked knife 2, a first cutter handle 6, a second cutter handle 7, a first hooked knife handle 3, a second hooked knife handle 4 and a threaded handle 5; the first cutter handle 6 is fixedly connected with the cutter 1, and the first cutter handle 6 and the second cutter handle 7 form a revolute pair; the tail end of a second cutter handle 7 is fixedly connected with a threaded handle 5, the outer side of the second cutter handle 7 is in threaded connection with a second hook cutter handle 4, the cutter is arranged on one side of the blunt hook cutter, which is far away from the threaded handle, and the cutter is parallel to the blunt hook cutter; the first knife hooking handle 3 is in a circular table shape, the second knife hooking handle 4 is in a cylindrical shape, the larger diameter surface of the first knife hooking handle 3 is connected with the second knife hooking handle 4, and the larger diameter surface of the first knife hooking handle 3 is smaller than the diameter of the cylindrical surface of the second knife hooking handle; during the use, rotate the screw thread handle earlier, make screw thread handle and second cutter handle of a knife drive first cutter handle of a knife and remove to keeping away from blunt head collude sword one side, receive the interior of blunt head colluding sword with the cutter, get into between ligament and the dura mater of indulging after, will indulge ligament and dura mater separation back, rotate the screw thread handle, drive, break away from blunt head collude the sword with the cutter, rotatory screw thread handle cuts back and indulges the ligament again.
A novel combined cervical vertebra posterior longitudinal ligament hooked knife comprises a cutting knife 1, a blunt hooked knife 2, a cutting knife handle, a hooked knife handle and a threaded handle 5; the tail end of the cutter handle is provided with a thread, and a thread pair is formed by the thread and the thread handle; the cutter handle and the hook cutter handle cannot rotate mutually; the thread handle and the hook knife handle form a revolute pair; the cutter handle is arranged in the hook cutter handle; the cutter is arranged on one side of the blunt-end hooking cutter, which is far away from the thread handle, and the cutter is parallel to the blunt-end hooking cutter. When the cutting knife is used, the threaded handle is rotated firstly, the cutter handle is moved rightwards, the cutter is received in the blunt-end hooking knife and enters between the posterior longitudinal ligament and the dura mater, the longitudinal ligament and the dura mater are separated, the threaded handle is rotated, the cutter handle is moved leftwards, the cutter is separated from the blunt-end hooking knife, and then the threaded handle is rotated to cut the posterior longitudinal ligament.
Claims (4)
1. The utility model provides a novel combination formula cervical vertebra posterior longitudinal ligament colludes sword which characterized in that: comprises a cutter, a blunt-end hook knife, a cutter handle, a hook knife handle and a thread handle; the cutter is in threaded connection with the threaded handle through the cutter handle, the cutter moves along the direction of the cutter handle by rotating the threaded handle, and the cutter handle is arranged in the cutter hooking handle; the cutter is arranged on one side of the blunt-end hooking cutter, which is far away from the thread handle, and the cutter is parallel to the blunt-end hooking cutter.
2. The novel combined cervical posterior longitudinal ligament hook knife according to claim 1, characterized in that: one side of the blunt-end hooking knife, which is close to the cutter, is provided with a groove, and the cutting edge of the cutter can be embedded into the groove.
3. The novel combined cervical posterior longitudinal ligament hook knife according to claim 1, characterized in that: the cutter handle is divided into two sections, namely a first cutter handle and a second cutter handle, wherein the first cutter handle is fixedly connected with a cutter, and the first cutter handle and the second cutter handle form a revolute pair; the tail end of the second cutter handle is fixedly connected with the threaded handle, and the outer side of the second cutter handle is in threaded connection with the hook cutter handle.
4. The novel combined cervical posterior longitudinal ligament hook knife according to claim 1, characterized in that: the tail end of the cutter handle is provided with a thread, and a thread pair is formed by the thread and the thread handle; the cutter handle and the hook cutter handle cannot rotate mutually; the thread handle and the knife handle of the hook knife form a revolute pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022242606.XU CN213910426U (en) | 2020-10-10 | 2020-10-10 | Novel combined cervical vertebra posterior longitudinal ligament hook knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022242606.XU CN213910426U (en) | 2020-10-10 | 2020-10-10 | Novel combined cervical vertebra posterior longitudinal ligament hook knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213910426U true CN213910426U (en) | 2021-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022242606.XU Active CN213910426U (en) | 2020-10-10 | 2020-10-10 | Novel combined cervical vertebra posterior longitudinal ligament hook knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213910426U (en) |
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2020
- 2020-10-10 CN CN202022242606.XU patent/CN213910426U/en active Active
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