CN215899757U - Vertebral plate drag hook that spinal surgery used - Google Patents
Vertebral plate drag hook that spinal surgery used Download PDFInfo
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- CN215899757U CN215899757U CN202122001792.2U CN202122001792U CN215899757U CN 215899757 U CN215899757 U CN 215899757U CN 202122001792 U CN202122001792 U CN 202122001792U CN 215899757 U CN215899757 U CN 215899757U
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Abstract
The utility model provides a vertebral plate drag hook for spinal surgery, which relates to the technical field of medical instruments, and is in an inverted L shape and consists of a transverse plate and a vertical plate which are integrally formed; the back end of the transverse plate of the vertebral plate drag hook is provided with a holding part, the lower end of the vertical plate is provided with a forked positioning part, and a guide groove which is distributed along the length direction and penetrates through the bending part is arranged between the two ends of the vertebral plate drag hook; the nail feeding guide plate capable of moving back and forth along the guide groove is erected on the transverse plate guide groove, and a limiting mechanism is arranged between the transverse plate guide groove and the nail feeding guide plate. The vertebral plate drag hook for the vertebral column operation can reduce visual field blind areas in the operation and improve the convenience of the operation, is also provided with the V-shaped sharp teeth which can be stably clamped into the transverse processes, can assist in positioning the nail placing opening position of the vertebral pedicle nail, can adjust the operation angle of the open-circuit handheld flat drill of the vertebral pedicle nail according to the conditions of different patients, increases the stability and improves the accuracy of the vertebral pedicle nail entering the nail channel.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a vertebral plate drag hook for spinal surgery.
Background
In the orthopedic spine surgery, the internal fixation operation of the pedicle screw is an important ring in the spine surgery, and mainly plays a role in restoring the sequence of the spine and maintaining the stability of the spine.
During operation, skin and subcutaneous tissues are cut along the incision direction, spinous processes are exposed from the lower end to the upper end of the incision, the spinous processes and vertebral plates are tightly attached to each other, the paraspinal muscles of the chest section are pushed to the transverse tip under the periosteum, and the lumbar vertebrae are exposed to the outside of the articular processes. The vertebral plate drag hook is used for retracting the paraspinal muscles of the concavo-convex side of the vertebra to expand the exposure range, and the pedicle screws are placed after the exposure, and are suitable for various surgical operations such as spinal fracture, lumbar spondylolisthesis, scoliosis and the like. In the operation, the vertebral plate drag hook is widely used, the existing vertebral plate drag hook is L-shaped, one end is a hook tooth, the other end is a handle, the handle is further held by hand, the hook tooth retracts muscle tissue to expose a transverse process part, and then the operation of implanting the pedicle screw is carried out through a positioning sleeve; however, the existing laminar drag hooks suffer from the following problems: 1. a certain visual field blind area is formed, which is not beneficial to the convenience of operation; 2. only one hook tooth is not stable enough; 3. the position of the lower nail of the pedicle screw cannot be well positioned in the operation process; and the operating angle of the handheld flat drill for opening the pedicle screw can not be adjusted according to the conditions of different patients.
Therefore, a vertebral plate drag hook for spinal surgery is designed to solve the technical problems.
Disclosure of Invention
The utility model provides a vertebral plate drag hook for spinal surgery, and aims to solve the problems that the existing vertebral plate drag hook has certain visual field blind areas during surgery, can not better position the lower nail position of a pedicle nail, and the like.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a vertebral plate drag hook for spinal surgery is in an inverted L shape and comprises a transverse plate and a vertical plate which are integrally formed; the back end of the transverse plate of the vertebral plate drag hook is provided with a holding part, the lower end of the vertical plate is provided with a forked positioning part, and a guide groove which is distributed along the length direction and penetrates through the bending part is arranged between the two ends of the vertebral plate drag hook; the nail feeding guide plate capable of moving back and forth along the guide groove is erected on the transverse plate guide groove, and a limiting mechanism is arranged between the transverse plate guide groove and the nail feeding guide plate.
Furthermore, the limiting mechanism comprises a plurality of positioning holes symmetrically formed in transverse plates on two sides of the guide groove and pins arranged on the back of the nail feeding guide plate and matched with the positioning holes; and an arc-shaped guide opening is formed in the middle of the front side edge of the nail feeding guide plate.
Furthermore, the whole forked positioning part is in an inverted U shape and comprises two V-shaped sharp teeth symmetrically arranged on two sides of the lower end of the vertical plate, and a distance is reserved between the two V-shaped sharp teeth, and the end edge of the corresponding part is arc-shaped.
Furthermore, the rear end of the transverse plate is bent upwards to form the hand holding part.
Furthermore, the V-shaped sharp teeth are folded outwards relative to the vertical plate, and the included angle between the V-shaped sharp teeth and the vertical plate is 155-165 degrees.
From the above description of the structure of the present invention, it can be seen that the present invention has the following advantages:
the vertebral plate drag hook for the spine surgery is improved, the guide groove and the forked positioning part which can be clamped into the transverse process or the articular process are additionally arranged on the original basis, the nail feeding guide plate which can move back and forth is arranged on the transverse plate, the nail feeding guide plate can move back and forth on the transverse plate, so that the vertebral plate drag hook can adapt to the surgical habits of different doctors and the conditions of different patients, the nail feeding guide plate is also provided with the arc-shaped guide port which can limit the pedicle nail feeding device, the accuracy of the pedicle nail feeding position can be better improved by matching with the V-shaped sharp teeth clamped into the transverse process, and the stability of the vertebral plate drag hook and the accuracy of the pedicle nail feeding channel are indirectly improved due to the fact that the number of the V-shaped sharp teeth clamped into the transverse process is two.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings and reference numerals used in the embodiments or the description of the prior art will be briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure in the direction A-A in FIG. 1;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a schematic structural view of the nail feeding guide plate.
Reference numerals: 10-a transverse plate; 11-a hand grip; 12-positioning holes; 20-a riser; 21-V-shaped tines; 301-guide grooves; 40-a nail feeding guide plate; 41-pin; 42-arc guide port.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
Referring to fig. 1, a vertebral plate retractor for spinal surgery is generally in an inverted L shape, and is composed of a transverse plate 10 and a vertical plate 20 which are integrally formed; the back end of a transverse plate 10 of the vertebral plate drag hook is provided with a hand holding part 11 for holding, the lower end of a vertical plate 20 is provided with a forked positioning part, a guide groove 301 which is distributed along the length direction and penetrates through a bending part is arranged between the transverse plate 10 and the two ends of the vertical plate 20, the bottom end of the guide groove 301 positioned on the vertical plate 20 is arc-shaped, and the guide groove 301 can widen the visual field during operation; a nail feeding guide plate 40 capable of moving back and forth along the guide groove 301 is erected on the guide groove 301 of the transverse plate 10, and a limiting mechanism is further arranged between the guide groove 301 of the transverse plate 10 and the nail feeding guide plate 40;
the limiting mechanism comprises a plurality of positioning holes 12 symmetrically formed in the transverse plates 10 on the two sides of the guide groove 301 and pins 41 arranged on the back surfaces of the nail feeding guide plates 40, the size of each pin 41 is matched with that of the corresponding positioning hole 12, and the nail feeding guide plates 40 can be detachably arranged on the positioning holes 12 on the two sides of the transverse plates 10 through the pins 41; the middle part of the front side edge of the screw feeding guide plate 40 is also provided with an arc-shaped guide port 42 for mechanically limiting the screw feeding of the pedicle screws; the grip 11 is bent upward from the rear end of the cross plate 10 to facilitate gripping during use.
The whole forked positioning part arranged at the lower end of the vertical plate 20 is in an inverted U shape, the forked positioning part is composed of two V-shaped sharp teeth 21 arranged at two sides of the lower end of the vertical plate 20, a spaced distance is arranged between the two V-shaped sharp teeth 21, and the ends of the corresponding parts are in an arc shape; the V-shaped sharp teeth 21 are folded outwards relative to the vertical plate 20, and the included angle between the V-shaped sharp teeth and the vertical plate 20 is 155-165 degrees;
when the pedicle screw is used in an operation, the hand holding part 20 is held, the two V-shaped sharp teeth 21 are clamped into the transverse process or the articular process, and the two V-shaped sharp teeth 21 are symmetrical to each other and have a certain radian, so that the two V-shaped sharp teeth 21 can be stably clamped into the transverse process or the articular process, and the pedicle screw placing opening position can be positioned in an auxiliary manner: furthermore, the operating angle of the handheld flat drill for opening the pedicle screw can be adjusted according to the conditions of different patients, so that the stability of the surgical retractor is enhanced; the penetrating guide groove 301 is formed between the two ends of the transverse plate 10 and the vertical plate 20, so that the operation visual field is wider; the transverse plate 10 is also provided with a nail feeding guide plate 40 which can move back and forth, so that the nail feeding instrument is limited and the surgical instrument for pedicle nail feeding is fixed in an auxiliary manner through an arc-shaped guide opening 42 arranged on the nail feeding guide plate 40, the nail feeding angle is adjusted according to the position of the V-shaped sharp teeth 21 clamped in the transverse process, and the accuracy of pedicle nail feeding is improved; avoiding unnecessary injury to patients caused by inaccurate nail-placing position.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (5)
1. A vertebral plate drag hook for spinal surgery is in an inverted L shape and comprises a transverse plate and a vertical plate which are integrally formed; the method is characterized in that: the back end of the transverse plate of the vertebral plate drag hook is provided with a holding part, the lower end of the vertical plate is provided with a forked positioning part, and a guide groove which is distributed along the length direction and penetrates through the bending part is arranged between the two ends of the vertebral plate drag hook; the nail feeding guide plate capable of moving back and forth along the guide groove is erected on the transverse plate guide groove, and a limiting mechanism is arranged between the transverse plate guide groove and the nail feeding guide plate.
2. The vertebral plate drag hook for the spine surgery according to claim 1, characterized in that the limiting mechanism comprises a plurality of locating holes symmetrically arranged on the transverse plates at the two sides of the guiding groove and a pin arranged on the back surface of the nail feeding guide plate and matched with the locating holes; and an arc-shaped guide opening is formed in the middle of the front side edge of the nail feeding guide plate.
3. The laminectomy retractor of claim 1 or 2, wherein: the forked positioning part is integrally in an inverted U shape and comprises two V-shaped sharp teeth symmetrically arranged on two sides of the lower end of the vertical plate, and the end edges of the two V-shaped sharp teeth, which are provided with intervals and corresponding parts, are arc-shaped.
4. The vertebral plate retractor for the spine surgery as claimed in claim 3, wherein the rear end of the transverse plate is bent upwards to form the holding part.
5. The vertebral plate retractor for the spine surgery of claim 3, wherein the V-shaped sharp teeth are folded outwards relative to the vertical plate, and the included angle between the V-shaped sharp teeth and the vertical plate is 155-165 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122001792.2U CN215899757U (en) | 2021-08-24 | 2021-08-24 | Vertebral plate drag hook that spinal surgery used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122001792.2U CN215899757U (en) | 2021-08-24 | 2021-08-24 | Vertebral plate drag hook that spinal surgery used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215899757U true CN215899757U (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122001792.2U Active CN215899757U (en) | 2021-08-24 | 2021-08-24 | Vertebral plate drag hook that spinal surgery used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215899757U (en) |
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2021
- 2021-08-24 CN CN202122001792.2U patent/CN215899757U/en active Active
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