CN210121169U - Two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle - Google Patents
Two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle Download PDFInfo
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- CN210121169U CN210121169U CN201721505219.2U CN201721505219U CN210121169U CN 210121169 U CN210121169 U CN 210121169U CN 201721505219 U CN201721505219 U CN 201721505219U CN 210121169 U CN210121169 U CN 210121169U
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- screw
- spinous process
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Abstract
The utility model belongs to the field of medical instruments, in particular to a bilateral remedial dentata pedicle or vertebral lamina screw guide plate, which is provided with a screw guide pipe, a connecting mechanism and a base, wherein the base is provided with a zygapophysis base, a vertebral lamina base and a spinous process root base, and the shapes of the zygapophysis base, the vertebral lamina base and the spinous process root base are completely attached to the shapes of the dentata apophysis, the vertebral lamina and the spinous process root required by preoperative simulation respectively; the vertebral pedicle screw conduit is connected with the spinous process base, the vertebral lamina screw conduit is connected with the spinous process root base, and the articular process base and the spinous process root base are connected into a whole by virtue of the vertebral lamina base; the pedicle screw guide tube and the vertebral plate screw guide tube are internally provided with Kirschner wire guide through holes, and the Kirschner wire guides the vertebral plate and the pedicle screw to be placed through the Kirschner wire guide through holes; two ends of the connecting mechanism are respectively connected with the left lateral base and the right lateral base to connect the bases on the two sides into a whole; the connecting mechanism is attached to the dentata spinous process in shape. The utility model discloses supplementary dentata pedicle of vertebral arch or the putting into of vertebral plate screw has increased the operation security, simple structure, easy operation.
Description
Technical Field
The utility model belongs to the field of medical equipment, especially, relate to a two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle.
Background
Pedicle screws are a common procedure in posterior fixation of the axis. However, the following problems are easy to occur in the operation process:
(1) the high-span deformity of vertebral artery affects the nail placement.
(2) The vertebral fusion deformity of the axis and the neck affects the nail placement, the nail placement is wrong, and important nerve and blood vessels are damaged.
(3) The vertebral pedicle of the dentata is too thin and is not suitable for the implantation of the vertebral pedicle screw.
The vertebral plate screw can be used as a remedy measure for the pedicle screw which cannot be placed, but the angle of the vertebral plate falling into the screw is deviated to the vertebral canal, so that the risk of damaging the spinal cord is reduced, and the X-ray fluoroscopy monitoring in the operation is not easy to realize, so that the technology cannot be popularized well.
Disclosure of Invention
In order to solve the problem, the utility model provides a two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle, supplementary dentata pedicle of vertebral arch or vertebral plate screw put into, increased the operation security, simple structure, easy operation.
Solve above technical problem the utility model provides a two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle, its characterized in that: the navigation template is provided with a screw guide pipe, a connecting mechanism and a base, the base is provided with a vertebral lamina base, a spinous process root base and a articular process base, the vertebral lamina base, the spinous process root base and the articular process base are connected into a whole, and the shapes of the vertebral lamina, the spinous process root and the articular process are completely attached to the shapes of a dentata vertebral lamina, the spinous process root and the articular process required by preoperative simulation respectively; the screw conduit is provided with a vertebral lamina screw conduit and a vertebral pedicle screw conduit, the vertebral lamina screw conduit is connected with the base of the root of the spinous process, and the vertebral pedicle screw conduit is connected with the base of the articular process; a Kirschner wire guide hole is formed in the pedicle screw guide tube, and the Kirschner wire guides the vertebral plate or the pedicle screw to be placed through the Kirschner wire guide through hole; two ends of the connecting mechanism are respectively connected with the bases to connect the bases on two sides into a whole; the connecting mechanism is attached to the dentata spinous process in shape.
And two ends of the connecting mechanism are respectively connected with the spinous process root base.
The thickness of the base is 2.8-3.2mm, and the optimized scheme is 3 mm.
The diameter of the Kirschner wire guide through hole is 2-2.3mm, and the optimized scheme is 2.2 mm.
The diameter of the pedicle screw catheter is 5.4-5.7mm, and the optimized scheme is 5.6 mm.
The two pedicle screw catheters are positioned on the base in the same direction.
And an indicating block is arranged on the base.
The utility model discloses utilize the type of remedy 3D that computer aided design, 3D printed the technique preparation to print the supplementary dentata pedicle of vertebral arch of navigation baffle or vertebral plate screw not only can realize that the accuracy of screw is put the people, provide the remedial measure after the nail failure is put to centrum pedicle of vertebral arch screw in art moreover, increased the operation security. After the axial pedicle screw fails to be placed, the vertebral plate screw is used as a screw placing guide plate for the remedial operation.
The utility model is suitable for an it is unstable to the cervical vertebra to go up cervical vertebra fracture dislocation, need go the patient of axis back way internal fixation, be particularly useful for axis anatomy abnormity or pedicle of vertebral arch screw put the nail failure and need go the vertebral plate screw as remedying fixed patient.
Drawings
FIG. 1 and FIG. 2 are schematic diagrams of the structure of the middle guide plate of the present invention
FIG. 3 is a combination view of the guide plate, the kirschner wire and the pedicle of vertebral arch
1. The spinal column comprises a screw guide tube, 2 Ke's wire guide through holes, 3 a base, 4 an indication block, 5 a connecting mechanism, 6 Ke's wires, 7 an axis, 8 spinous processes, 101 a vertebral plate screw guide tube, 102 pedicle screw guide tubes, 301 a spinous process root base, 302 a vertebral plate base and 303 an articular process base
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
example 1
The navigation template is provided with a screw guide pipe, a connecting mechanism and a base, the base is provided with a vertebral plate base, a spinous process root base and a articular process base, the vertebral plate base, the spinous process root base and the articular process base are connected into a whole and applied to the upper axis, and the shapes of the upper axis are completely attached to the shapes of the vertebral plate, the spinous process root and the articular process required by preoperative simulation respectively; the screw guide pipe is provided with a vertebral lamina screw guide pipe and a vertebral pedicle screw guide pipe, and the vertebral lamina screw guide pipe is connected with the base at the root of the spinous process; the pedicle screw conduit is connected with the articular process base and also connected with the vertebral plate base; a Kirschner wire guide through hole is formed in the pedicle screw catheter, and the Kirschner wire guides the vertebral plate or the pedicle screw to be placed through the Kirschner wire guide through hole; two ends of the connecting mechanism are respectively connected with the bases to connect the bases on two sides into a whole; the connecting mechanism is attached to the dentata spinous process in shape.
The two pedicle screw catheters are positioned on the base in the same direction. The vertebral plate screw positioning mechanism is used as a remedy after the implantation failure of the pedicle screw.
The articular process base and the spinous process root base are connected into a whole through the vertebral plate base.
The thickness of the base is 2.8 or 3.2mm, the diameter of the kirschner wire guide through hole is 2 or 2.3mm, and the diameter of the pedicle screw conduit is 5.4 or 5.7 mm.
Each catheter corresponds to a left vertebral plate screw and a right vertebral pedicle screw feeding point respectively, the inclination direction is designed according to individuation measured before an operation, the individuation difference of the direction and the angle is large, and the regularity is not strong.
Example 2
The navigation template is provided with a screw guide pipe, a connecting mechanism and a base, the base is provided with a vertebral plate base, a spinous process root base and a zygapophysis base, the spinous process root base and the zygapophysis base are connected into a whole through the left side and the right side of the vertebral plate base and are applied to the upper dentata, and the shapes of the spinous process root base and the zygapophysis base are completely attached to the shapes of the dentata vertebral plate, the spinous process root and the zygapophysis required by preoperative simulation respectively; the screw conduit is provided with a vertebral lamina screw conduit and a vertebral pedicle screw conduit, the vertebral lamina screw conduit is connected with the spinous process root base, and the vertebral pedicle screw conduit is connected with the articular process base and the vertebral lamina base, namely positioned at the joint of the articular process base and the vertebral lamina base; a Kirschner wire guide through hole is formed in the pedicle screw catheter, and the Kirschner wire guides the vertebral plate or the pedicle screw to be placed through the Kirschner wire guide through hole; two ends of the connecting mechanism are respectively connected with the bases to connect the bases on two sides into a whole; the connecting mechanism is attached to the dentata spinous process in shape. The two pedicle screw catheters are positioned on the base in the same direction, and two ends of the connecting mechanism are respectively connected with the base at the root of the spinous process. The base is provided with an indicating block for guiding.
The thickness of the base is 3mm, the diameter of the Kirschner wire guide through hole is 2.2mm, and the diameter of the pedicle screw catheter is 5.6 mm.
The utility model relates to a two unifications of individualized vertebral plate screw remedy template. Analyzing the data of 18 patients with internal fixation surgery on the posterior axis of the dentata, wherein 12 men and 6 women are selected; the age is 21-73 years, and the average age is 43.4 years. 10 cases of epistropheus fracture, 5 cases of atlas fracture and 3 cases of skull base depressed base. And carrying out CT examination before operation to obtain original data, and three-dimensionally reconstructing an axis. And manufacturing a dentata pedicle screw and a cross vertebral plate screw navigation template (two screw guide holes are designed on the same guide plate) through reverse engineering software, and printing a real object through a 3D printer. In the operation, the navigation template is used for assisting to preferentially select the centrum pedicle screw to be placed, and the navigation template is used for assisting the vertebral plate screw to be placed for patients who fail to place or bleed frequently. And (3) matching and fitting the post-operation CT and the pre-operation CT, and measuring the screw feeding point and the screw feeding angle of the ideal screw path and the actual screw. The result is a total of 36 screws, 22 for the pedicle screws of the dentata and 14 for the lamina dentata. The patients all obtain follow-up visits for 12-24 months. The operation of all patients is completed smoothly, and the operation time is 90-180 min (average 123.4 min). Evaluation by Kawaguchi et al post-surgery showed 88.9% (32/36) for grade 0, 8.3% (3/36) for grade 1, and 2.7% (1/36) for grade 2. Compared with the preoperative differences of the three-dimensional direction angle and the screw feeding position of the postoperative screw, the postoperative screw has no statistical significance. The remedial 3D printing navigation guide plate manufactured by the computer aided design and the 3D printing technology assists the centrum pedicle or vertebral plate screw, not only can the accurate screw placement be realized, but also remedial measures after the centrum pedicle screw fails to be placed are provided, and the operation safety is improved.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (8)
1. A bilateral type remedial dentata pedicle or lamina screw guide plate is characterized in that: the guide plate is provided with a screw guide pipe (1), a connecting mechanism (5) and a base (3), the base (3) is provided with a vertebral plate base (302), a spinous process root base (301) and an articular process base (303), the vertebral plate base, the spinous process root base and the articular process base are connected into a whole, and the shapes of the three are completely attached to the shapes of an epistropheus vertebral plate, a spinous process root and an articular process required by preoperative simulation respectively; the screw guide pipe (1) is provided with a vertebral plate screw guide pipe (101) and a pedicle screw guide pipe (102), the vertebral plate screw guide pipe (101) is connected with the spinous process root base (301), and the pedicle screw guide pipe (102) is connected with the articular process base (303); a Kirschner wire guide through hole (2) is formed in the screw guide tube (1), and a Kirschner wire (6) guides the vertebral plate or the pedicle screw to be placed through the Kirschner wire guide through hole (2); two ends of the connecting mechanism (5) are respectively connected with the bases (3) to connect the bases (3) at two sides into a whole; the connecting mechanism (5) is attached to the spinous process (8) in shape; two ends of the connecting mechanism (5) are respectively connected with the spinous process root base (301); the two screw guide pipes (1) are positioned on the base in the same direction.
2. A bilateral-type remedial dentate pedicle or lamina screw guide as claimed in claim 1, wherein: the thickness of the base (3) is 2.8-3.2 mm.
3. A bilateral-type remedial dentate pedicle or lamina screw guide as claimed in claim 2, wherein: the thickness of the base (3) is 3 mm.
4. A bilateral-type remedial dentate pedicle or lamina screw guide as claimed in claim 1, wherein: the diameter of the Kirschner wire guide through hole (2) is 2-2.3 mm.
5. A bilateral-type, remedial dentate pedicle or lamina screw guide as claimed in claim 4, wherein: the diameter of the Kirschner wire guide through hole (2) is 2.2 mm.
6. A bilateral-type remedial dentate pedicle or lamina screw guide as claimed in claim 1, wherein: the diameter of the pedicle screw catheter (102) is 5.4-5.7 mm.
7. A bilateral-type, remedial dentate pedicle or lamina screw guide as claimed in claim 6, wherein: the pedicle screw guide tube (102) has a diameter of 5.6 mm.
8. A bilateral-type remedial dentate pedicle or lamina screw guide as claimed in any one of claims 1-3, wherein: and an indication block (4) is arranged on the base (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505219.2U CN210121169U (en) | 2017-11-13 | 2017-11-13 | Two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721505219.2U CN210121169U (en) | 2017-11-13 | 2017-11-13 | Two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210121169U true CN210121169U (en) | 2020-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721505219.2U Expired - Fee Related CN210121169U (en) | 2017-11-13 | 2017-11-13 | Two side type remedial dentata pedicle of vertebral arch or vertebral plate screw baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210121169U (en) |
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2017
- 2017-11-13 CN CN201721505219.2U patent/CN210121169U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210304 Address after: No.19, tamulin street, Ziliujing District, Zigong City, Sichuan Province Patentee after: ZIGONG FOURTH PEOPLE'S HOSPITAL (ZIGONG EMERGENCY CENTER) Address before: 643000 No.2, tamulin street, Ziliujing District, Zigong City, Sichuan Province Patentee before: ZIGONG NO.4 PEOPLE'S Hospital Patentee before: Wu Chao |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200303 Termination date: 20201113 |