CN113116493B - Anterior cervical pedicle screw trajectory determining device - Google Patents
Anterior cervical pedicle screw trajectory determining device Download PDFInfo
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- CN113116493B CN113116493B CN202110411134.2A CN202110411134A CN113116493B CN 113116493 B CN113116493 B CN 113116493B CN 202110411134 A CN202110411134 A CN 202110411134A CN 113116493 B CN113116493 B CN 113116493B
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- angle gauge
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- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 208000029761 vertebral disease Diseases 0.000 description 1
Classifications
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a device for determining the track of a pedicle screw in the anterior cervical vertebra, which comprises: the device comprises a longitudinal semicircle angle gauge, an abduction right angle gauge, a puncture track catheter and a base, wherein a horizontal shaft is arranged at the round point of the longitudinal semicircle angle gauge, the horizontal shaft is mutually perpendicular to the plane where the longitudinal semicircle angle gauge is positioned, the upper side edge of the abduction right angle gauge rotates around the horizontal shaft, the front end of the puncture track catheter is rotationally connected to the circle center of the abduction right angle gauge, the circle center of the abduction right angle gauge is a puncture point of a pedicle screw, the puncture track catheter extends along the radial direction of the abduction right angle gauge, and the puncture track catheter can rotate on the plane where the abduction right angle gauge is positioned with the puncture point. The head inclination/tail inclination angle can be adjusted through the longitudinal semicircular protractor, and then the abduction angle of the track of the pedicle screw is adjusted on the abduction right angle protractor, so that the accuracy of the placement position of the pedicle screw can be ensured. In addition, the utility model has the advantages of simple structure and convenient operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a device for determining the track of a cervical anterior pedicle screw.
Background
The cervical pedicle screw plays an important role in treating cervical vertebra diseases, at present, the cervical pedicle screw is screwed into the cervical pedicle mainly by estimating the distance and the angle, the screwing position of the cervical pedicle screw is difficult to be accurately controlled by the operation mode, the blood vessel and the nervous system are easy to be damaged, and a large operation risk exists.
Therefore, how to provide a device for determining the track of the anterior pedicle screw of the cervical vertebra cone so as to improve the accuracy of the pedicle screw placement is a technical problem which needs to be solved by the person skilled in the art at present.
Disclosure of Invention
The invention aims to provide a device for determining the track of a pedicle screw in the anterior cervical vertebra, which can improve the accuracy of pedicle screw placement.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an anterior cervical pedicle screw trajectory determining device, comprising: the device comprises a longitudinal semicircle angle gauge, an abduction right angle gauge, a puncture track catheter and a base, wherein a horizontal shaft is arranged at the round point of the longitudinal semicircle angle gauge, the horizontal shaft is mutually perpendicular to the plane where the longitudinal semicircle angle gauge is positioned, one side of the abduction right angle gauge is rotationally connected with the horizontal shaft, the front end of the puncture track catheter is rotationally connected with the center of the abduction right angle gauge, the center of the abduction right angle gauge is a puncture point of a pedicle screw, the puncture track catheter extends along the radial direction of the abduction right angle gauge, a chute for horizontal movement of the horizontal shaft is arranged on the base, and a marking line for determining the horizontal position of the puncture point is also arranged on the base.
Preferably, the abduction right angle protractor is provided with a first arc-shaped groove with a concentric center, and the puncture track catheter is selectively fixed at any angle on the first arc-shaped groove through a fastener.
Preferably, the end of the horizontal shaft is provided with an adjusting knob for adjusting the axial position thereof.
Preferably, the other side of the abduction right angle protractor is provided with an inclination fixing knob, and the inclination fixing knob is used for fixing the abduction right angle protractor and the longitudinal semicircular protractor.
Preferably, the longitudinal semicircular protractor is provided with a second arc-shaped groove with a concentric center, and the inclination fixing knob is used for penetrating through the second arc-shaped groove to be fixed at the side part of the abduction right angle protractor.
Preferably, the puncture track catheter further comprises an external expansion precise angle gauge, wherein the radius of the external expansion precise angle gauge is larger than that of the abduction right angle gauge and/or the longitudinal semicircular angle gauge, the length of the puncture track catheter is larger than that of the external expansion precise angle gauge, and the concentric center of the external expansion precise angle gauge is connected with the abduction right angle gauge or the longitudinal semicircular angle gauge.
Preferably, the external expansion precise angle gauge is provided with a through hole.
Compared with the prior art, the technical scheme has the following advantages:
the invention provides a device for determining the track of a pedicle screw in the anterior cervical vertebra, which comprises: the device comprises a longitudinal semicircle angle gauge, an abduction right angle gauge, a puncture track catheter and a base, wherein the deflection angle of the device is adjusted in the open air during operation, the head inclination/tail inclination angle can be adjusted through the longitudinal semicircle angle gauge, and then the abduction angle of the pedicle screw track is adjusted on the abduction right angle gauge. And then, according to the distance between the puncture point and the central line in the preoperative planning, the position of the horizontal axis is adjusted so that the longitudinal semicircle angle gauge moves to the puncture point, after the deflection angle and the distance are adjusted, the longitudinal central line of the device base is aligned with the central axis of the vertebral body, the puncture needle performs puncture and determination of the puncture position along the puncture catheter, and after the puncture needle is put in, the track determination device is taken out along the reverse direction of the puncture needle. The placement position of the puncture track catheter can be accurately determined through the longitudinal semicircular protractor and the abduction right angle protractor, so that the accuracy of the placement position of the pedicle screw can be ensured. In addition, the utility model has the advantages of simple structure and convenient operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the back structure of a device for determining the trajectory of a pedicle screw in the anterior cervical vertebra according to an embodiment of the invention;
FIG. 2 is a schematic view of the anterior construction of a cervical anterior pedicle screw trajectory determining device;
FIG. 3 is a schematic view of a construction of a anterior cervical pedicle screw trajectory determining device in a tiled state;
FIG. 4 is a schematic diagram of the external extended precision protractor;
fig. 5 is a schematic view of the structure of the external expansion precision protractor when it is connected to the longitudinal semicircle protractor.
The reference numerals are as follows:
1 is a base, 101 is a marking line, 2 is a longitudinal semicircular protractor, 201 is a second arc-shaped groove, 3 is an abduction right angle protractor, 301 is a first arc-shaped groove, 4 is a puncture track catheter, 5 is a horizontal shaft, 6 is an external expansion accurate protractor, and 601 is a through hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, fig. 1 is a schematic diagram of a back structure of a device for determining a trajectory of a pedicle screw in front of a cervical vertebra according to an embodiment of the invention; FIG. 2 is a schematic view of the anterior construction of a cervical anterior pedicle screw trajectory determining device; FIG. 3 is a schematic view of a construction of a anterior cervical pedicle screw trajectory determining device in a tiled state; FIG. 4 is a schematic diagram of the external extended precision protractor; fig. 5 is a schematic view of the structure of the external expansion precision protractor when it is connected to the longitudinal semicircle protractor.
The embodiment of the invention provides a device for determining the track of a pedicle screw in the anterior cervical vertebra, as shown in fig. 1 and 2, which specifically comprises: the puncture track device comprises a longitudinal semicircular protractor 2, an abduction right angle protractor 3, a puncture track guide pipe 4 and a base 1, wherein a horizontal shaft 5 is arranged at the round point of the longitudinal semicircular protractor 2, the horizontal shaft 5 and the plane where the longitudinal semicircular protractor is positioned are mutually perpendicular, namely, the horizontal shaft 5 transversely passes through the longitudinal semicircular protractor, one side of the abduction right angle protractor 3 is rotationally connected with the horizontal shaft 5, for example, a sleeve pipe can be arranged on one side of the abduction right angle protractor 3, the sleeve pipe is sleeved on the horizontal shaft 5, in order to clearly show the structures of the longitudinal semicircular protractor 2 and the abduction right angle protractor 3, as shown in fig. 3, the longitudinal semicircular protractor 2 and the abduction right angle protractor 3 are horizontally paved in a plane, the longitudinal semicircular protractor 2 is perpendicular to the plane where the longitudinal semicircular protractor 2 is positioned, the upper side of the abduction right angle protractor 3 can rotate around the horizontal shaft 5, the front end of the puncture track guide pipe 4 is rotationally connected at the position of the abduction right angle protractor 3, the longitudinal semicircular protractor 2 and the abduction right angle protractor 3 share a center angle, the sleeve pipe is sleeved on the center point 3, and the puncture track guide pipe 3 is arranged on the horizontal plane 1, and the puncture track guide pipe 3 is arranged on the plane 1, and the puncture track guide pipe is arranged on the horizontal plane, and the puncture track guide pipe is arranged on the puncture track 1, and the puncture track 3 is arranged on the puncture track has a vertical direction right angle puncture track guide line and a puncture track 3, and a puncture track has a puncture track. The surgical planning is needed before the operation, and the distance between the puncture point and the central axis of the vertebral body, the head inclination/tail inclination angle and the abduction angle of the pedicle screw track are needed to be measured. After the anterior cervical surgery field is exposed, the deflection angle of the device is adjusted in the surgery field, the head inclination/tail inclination angle can be adjusted through the longitudinal semicircular protractor 2, and then the abduction angle of the pedicle screw track is adjusted on the abduction right angle protractor 3. And then, according to the distance between the puncture point and the central line in the preoperative planning, the position of the horizontal shaft 5 is adjusted so that the longitudinal semicircular angle gauge 2 moves to the puncture point, after the deflection angle and the distance are adjusted, the longitudinal central line of the device base 1 is aligned with the central axis of the centrum, the puncture needle performs puncture and determination of the puncture position along the puncture catheter, and after the puncture needle is put in, the track determination device is taken out along the reverse direction of the puncture needle. Since the placement position of the puncture track catheter 4 can be accurately determined through the longitudinal semicircular protractor 2 and the abduction right angle protractor 3, the accuracy of the pedicle screw placement position can be ensured. In addition, the utility model has the advantages of simple structure and convenient operation.
In order to facilitate the fixing of the puncture track catheter 4, the abduction angle gauge 3 is provided with a first arc-shaped groove 301 with a concentric center, after the puncture track catheter 4 rotates to a required angle on the plane of the abduction angle gauge 3, the puncture track catheter is fixed on the first arc-shaped groove 301 through a fastener, wherein the fastener is preferably a knob screwed on the puncture track catheter 4, the knob penetrates through the first arc-shaped groove 301, and when the locking or angle adjustment is required, the knob is screwed.
Further, the end of the horizontal shaft 5 is provided with an adjusting knob for adjusting the axial position of the horizontal shaft, for example, the adjusting knob can be fixed on the base 1, the tail end of the adjusting knob is positioned in the chute, and when the adjusting knob is screwed, the horizontal shaft 5 can be pushed to move in the chute.
In order to lock the rotation angle of the abduction right angle protractor 3 conveniently, the other side of the abduction right angle protractor 3 is provided with an inclination fixing knob, the inclination fixing knob is used for fixing the abduction right angle protractor 3 and the longitudinal semicircular protractor 2, the longitudinal semicircular protractor 2 is provided with a second arc-shaped groove 201 with a common center, the inclination fixing knob passes through the second arc-shaped groove 201 to be fixed on the side part of the abduction right angle protractor 3, and the rotation angle of the abduction right angle protractor 3 can be fixed by screwing the inclination fixing knob.
Further, the puncture track catheter further comprises an external expansion precise angle gauge 6, as shown in fig. 4 and 5, the radius of the external expansion precise angle gauge 6 is larger than that of the abduction right angle gauge 3 and/or the longitudinal semicircular angle gauge 2, the length of the puncture track catheter 4 is larger than that of the external expansion precise angle gauge 6, the external expansion precise angle gauge 6 is concentric with the abduction right angle gauge 3 or the longitudinal semicircular angle gauge 2, namely, the external expansion precise angle gauge 6 can be horizontally placed on the abduction right angle gauge 3 or the longitudinal semicircular angle gauge 2, for example, a clamping groove can be formed in the abduction right angle gauge 3, and the external expansion precise angle gauge 6 can be clamped in the clamping groove. The external expansion precise angle gauge 6 is preferably in a right-angle structure, and a through hole 601 is formed in the external expansion precise angle gauge 6 so as to avoid a fastener or an inclination fixing knob.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The invention provides a device for determining the track of the anterior cervical pedicle screw. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. An anterior cervical pedicle screw trajectory determining device, comprising: the device comprises a longitudinal semicircle angle gauge, an abduction right angle gauge, a puncture track guide pipe and a base, wherein a horizontal shaft is arranged at the round point of the longitudinal semicircle angle gauge, the horizontal shaft is mutually perpendicular to the plane where the longitudinal semicircle angle gauge is positioned, one side of the abduction right angle gauge is rotationally connected with the horizontal shaft, the front end of the puncture track guide pipe is rotationally connected with the center of the abduction right angle gauge, the longitudinal semicircle angle gauge and the abduction right angle gauge share a center, the center of the abduction right angle gauge is a puncture point of a pedicle screw, the puncture track guide pipe extends along the radial direction of the abduction right angle gauge, the puncture track guide pipe is in the plane where the abduction right angle gauge is positioned and rotates with the puncture point, a chute for horizontally moving the horizontal shaft is arranged on the base, and a marking line for determining the horizontal position of the puncture point is also arranged on the base.
2. The anterior cervical pedicle screw trajectory determination device of claim 1, wherein the abduction angle gauge is provided with a first arc-shaped slot concentric with the center, and the puncture trajectory conduit is selectively fixed at any angle on the first arc-shaped slot by a fastener.
3. The anterior cervical pedicle screw trajectory determination device of claim 1, wherein the end of the horizontal shaft is provided with an adjustment knob that adjusts its axial position.
4. The anterior cervical pedicle screw trajectory determining device of claim 1, wherein the other side of the abduction right angle protractor is provided with a tilt fixing knob for fixing the abduction right angle protractor and the longitudinal semicircle protractor.
5. The anterior cervical pedicle screw trajectory determining device of claim 4, wherein the longitudinal semicircular protractor is provided with a second arc-shaped slot concentric with the center, and the tilt fixing knob is adapted to be fixed to the lateral part of the abduction right angle protractor through the second arc-shaped slot.
6. The anterior cervical pedicle screw trajectory determination device of any one of claims 1 to 5, further comprising an external expansion precision goniometer, the external expansion precision goniometer having a radius greater than the radius of the abduction right angle protractor and/or the longitudinal semicircle protractor, the length of the puncture trajectory catheter being greater than the external expansion precision protractor, the external expansion precision protractor being concentric with the abduction right angle protractor or the longitudinal semicircle protractor.
7. The anterior cervical pedicle screw trajectory determination device of claim 6, wherein the external expansion precision protractor is provided with a through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110411134.2A CN113116493B (en) | 2021-04-16 | 2021-04-16 | Anterior cervical pedicle screw trajectory determining device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110411134.2A CN113116493B (en) | 2021-04-16 | 2021-04-16 | Anterior cervical pedicle screw trajectory determining device |
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| CN113116493A CN113116493A (en) | 2021-07-16 |
| CN113116493B true CN113116493B (en) | 2023-12-26 |
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