CN213345898U - Low incisura vertebral lamina hook - Google Patents
Low incisura vertebral lamina hook Download PDFInfo
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- CN213345898U CN213345898U CN202021784807.6U CN202021784807U CN213345898U CN 213345898 U CN213345898 U CN 213345898U CN 202021784807 U CN202021784807 U CN 202021784807U CN 213345898 U CN213345898 U CN 213345898U
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- inner core
- tensioning sleeve
- deformation
- groove
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Abstract
The utility model belongs to the field of medical equipment, concretely relates to low notch vertebral lamina hook. A low-incisura vertebral lamina hook comprises an inner core and a tensioning sleeve; the upper end of the inner core is provided with two deformation angles, and a circular groove is formed between the two deformation angles; the lower end of the inner core is provided with a ball socket, and a ball head bone hook is arranged in the ball socket; the sleeve wall of the tensioning sleeve is provided with two circular groove notches corresponding to the trend of the circular grooves, and the top edge of the tensioning sleeve is also provided with an annular groove.
Description
Technical Field
The utility model belongs to the field of medical equipment, concretely relates to low notch vertebral lamina hook.
Background
Spinal deformity refers to the deviation of coronal, sagittal or axial positions of the spine from normal, manifesting as morphological abnormalities. In a population of patients with spinal deformities, a subset of patients will undergo corrective treatment using intravertebral fixation surgery. In patients who undergo the internal spinal fixation operation, the vertebral bodies of some patients have serious deformity and can not be screwed into pedicle screws, so that an internal fixation frame structure can not be established. To overcome such difficulties, surgery is performed using an internal fixation frame of a bone hook-orthopedic rod. However, the internal fixation frames used at the present stage in the form of bone hooks have significant drawbacks: when the bone hook is installed on a vertebral body, the angle of the bone hook can not be adjusted according to the actual trend of the orthopedic rod, so that the requirement on the shape of the vertebral body is high in the process of installing the bone hook, the selection difficulty of a doctor in the operation process is improved, and the operation time is prolonged; in addition, among the hook stick system that fixed operation used in the backbone, the top of bone hook is designed for the screw-in top cap mostly, the screw-in top cap need set up the screw track of take the altitude and cooperate, the whole height of bone hook has been increased to this structure, it is great to the tissue interference around the operation position after the implantation, patient's foreign body sensation is strong, and the screw-in top cap is in the use, need screw each top cap, and fasten the inspection, need use a plurality of bone hooks among the fixed operation in the backbone, the inspection of screwing to every bone hook, greatly increased the operation time, the risk that arouses patient's complication has been increased simultaneously.
In order to solve the problems, the utility model provides a spinal internal fixation operation hook rod system with low incisional mark and easy adjustment, and the utility model discloses hope to provide a low incisional mark vertebral lamina hook.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low notch vertebral lamina hook to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a low-incisura vertebral lamina hook comprises an inner core and a tensioning sleeve; the upper end of the inner core is provided with two deformation angles, and a circular groove is formed between the two deformation angles; the lower end of the inner core is provided with a ball socket, and a ball head bone hook is arranged in the ball socket; the sleeve wall of the tensioning sleeve is provided with two circular groove notches corresponding to the trend of the circular grooves, and the top edge of the tensioning sleeve is also provided with an annular groove.
The inner core is provided with an expansion joint.
The outer diameter of the top of the inner core is larger than the inner diameter of the top of the tensioning sleeve.
And strip-shaped depressions are formed in the outer walls of the two deformation angles.
The inner core circular groove both sides are equipped with the fixed slot, and are corresponding, it is equipped with two fixed slot breachs to rise to sheathe in.
And an inner core locking groove is formed in the inner core, and correspondingly, a tensioning sleeve locking groove is formed in the tensioning sleeve.
The inner core and the two deformation angles form an inner core-deformation angle assembly, and the height of the inner core-deformation angle assembly is less than or equal to that of the tensioning sleeve.
The top of the ball head bone hook is provided with a drill groove corresponding to the drill groove, and the inner core is provided with a ball socket through hole.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the inner core is provided with an expansion joint, so that a ball head bone hook can be conveniently installed in the ball socket; meanwhile, the trend of the circular groove is convenient to adjust in the operation process, and after the adjustment is finished, the expansion sleeve is lifted and pulled to extrude the inner core, so that the expansion joint is reduced, and the ball head bone hook is fixed;
(2) the distance between the outer edges of the tops of the two deformation angles is larger than the inner diameter of the top of the tensioning sleeve, so that the deformation angles deform due to extrusion of the tensioning sleeve in the lifting process of the tensioning sleeve, and finally the shape correcting rod in the circular groove is held tightly;
(3) the outer edge surfaces of the two deformation angles are provided with strip-shaped depressions, so that the two deformation angles are in a thin waist shape, and the deformation of the deformation angles is facilitated;
(4) fixing grooves are formed in two sides of each deformation angle, so that the deformation angles are easy to deform in the process of lifting the tensioning sleeve to extrude the deformation angles; meanwhile, the lifting distance of the tensioning sleeve is limited through the fixing groove;
(5) an inner core locking groove is formed in the inner core, and a round hole is formed in the tensioning sleeve; when the tensioning sleeve circular groove position corresponds to the inner core locking groove position, the circular rod is taken to align to the circular hole, the circular rod is knocked to cause the edge of the circular hole to be sunken inwards, the deformed part is just sunken into the inner core locking groove, and the circular rod and the inner core locking groove are clamped and limited to prevent the tensioning sleeve from falling off from the inner core;
(6) the height of the inner core-deformation angle combination body is less than or equal to that of the tensioning sleeve, so that the advantage of low incisura of the bone hook can be ensured after the tensioning sleeve is lifted;
(7) the bone hook is convenient to fix on the vertebral body by means of the drill groove and the ball socket through hole.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a side elevational view of the device of FIG. 1 with an orthopedic rod attached thereto;
FIG. 3 is a side view of the device of FIG. 1 with an orthopedic rod installed thereon;
FIG. 4 is a cross-sectional view of the device of FIG. 1;
FIG. 5 is a schematic view of the core-horn assembly of the device of FIG. 1;
FIG. 6 is a schematic view of a ball bone hook of the device of FIG. 1;
FIG. 7 is a schematic view of the structure of a tensioning sleeve in the device of FIG. 1;
FIG. 8 is a schematic view of a core-angle change-ball bone hook assembly of the device of FIG. 1;
description of reference numerals: 1. an inner core; 2. a tensioning sleeve; 3. a deformation angle; 4. a circular groove; 5. a ball socket; 6. a ball head bone hook; 7. drilling a groove; 8. a ball and socket through hole; 9. a circular groove gap; 10. an annular groove; 11. an expansion joint; 12. strip-shaped depressions; 13. fixing grooves; 14. a notch of the fixing groove; 15. an inner core locking groove; 16. a circular hole; 17. an orthopedic rod.
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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution of a low incisura vertebral lamina hook:
a low-incisura vertebral lamina hook comprises an inner core 1 and a tensioning sleeve 2, wherein the tensioning sleeve 2 is sleeved on the inner core 1. The lower part of the inner core 1 is provided with a ball socket 5, and the ball socket 5 is used for mounting a ball head bone hook 6; in order to facilitate the installation of the ball head bone hook 6, an expansion joint 11 is arranged on the inner core 1, and the existence of the expansion joint 11 enables the inner core 1 to expand and contract within a certain range. Two deformation angles 3 are further arranged on the top of the inner core 1, a circular groove 4 is formed between the two deformation angles 3, and the circular groove 4 is used for fixing the orthopedic rod 17. The ball head bone hook 6 is installed in the ball socket 5, the ball head bone hook 6 can be stably fixed in the ball socket 5 according to the structural design of the ball socket 5, in order to lock the relative positions of the inner core 1 and the tensioning sleeve 2, an inner core locking groove 15 is formed in the inner core 1, and a tensioning sleeve circular groove 16 is formed in the tensioning sleeve 2. Through the matching of the inner core locking groove 15 and the tensioning sleeve locking groove 16, the tensioning sleeve 2 and the inner core 1 cannot slide off; get the pole during use and aim at tight cover circular slot 16 that rises, strike the pole, cause to rise tight cover circular slot 16 and inwards cave in, the deformation part just in time is absorbed in inner core locking groove 15, both stop spacingly for rise tight cover 2 can not follow the landing on the inner core 1. Meanwhile, the height of the inner core-deformation angle combination body is less than or equal to that of the tensioning sleeve 2, so that the advantage of low notch of the whole bone hook can be still ensured after the tensioning sleeve 2 is lifted. The device is arranged on a corresponding vertebral body, the direction of the ball head bone hook 6 is adjusted to be corresponding to the direction of the circular groove 4, two circular groove gaps 9 are arranged on the sleeve wall of the tensioning sleeve 2, and the circular groove gaps 9 reserve corresponding space allowance for the orthopedic rod 17. In order to facilitate the bending deformation of the deformation angle 3 towards the circular groove 4, the strip-shaped recess 12 is arranged on the outer edge surface of the deformation angle 3, so that the deformation angle 3 is in a 'thin waist' shape. In order to further facilitate the deformation of the deformation angles 3, fixing grooves 13 are formed in the outer edge surfaces of the two deformation angles 3; furthermore, the fixation groove 13 provides a fixation for gripping the device. Correspondingly, a fixed groove gap 14 is arranged on the tensioning sleeve 2 to provide a connecting interface for a matching tool.
In the use process, the gap of the tensioning sleeve 2 faces upwards and is sleeved on the inner core-deformation angle-ball head bone hook assembly. The device is arranged on a designated vertebral body, the fixing pliers are taken to clamp the fixing grooves 13 on the two sides of the inner core 1, the inner core 1 is extruded after the walking direction of the circular groove 4 is adjusted, and the expansion joint 11 is compressed. The orthopedic rod 17 is placed in the circular groove 4, at the moment, because the distance between the outer edges of the tops of the two deformation angles 3 is larger than the inner diameter of the top of the tensioning sleeve 2, when the tensioning sleeve 2 is not lifted up, the deformation angles 3 are not deformed, and the orthopedic rod 17 is not squeezed and held by the two deformation angles 3. An annular groove 10 is formed in the upper edge of the top of the tensioning sleeve 2, and the tensioning sleeve 2 is lifted up by taking a device to grasp the annular groove 10. In the lifting process, the deformation angle 3 is deformed due to the extrusion of the tensioning sleeve 2, the deformation angles 3 on two sides are bent towards the inner side of the circular groove 4, and finally the orthopedic rod 17 arranged in the circular groove 4 is tightly embraced. After the lifting is finished, due to the relation between the acting force and the reacting force, the inner core 1 and the tensioning sleeve 2 form an extruding relation, and the inner core 1 and the tensioning sleeve 2 generate friction force through extrusion to prevent the tensioning sleeve 2 from slipping.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A low notch vertebral lamina hook which is characterized in that: comprises an inner core and a tensioning sleeve; the upper end of the inner core is provided with two deformation angles, and a circular groove is formed between the two deformation angles; the lower end of the inner core is provided with a ball socket, and a ball head bone hook is arranged in the ball socket; the sleeve wall of the tensioning sleeve is provided with two circular groove notches corresponding to the trend of the circular grooves, and the top edge of the tensioning sleeve is also provided with an annular groove.
2. A low notch laminar hook according to claim 1, wherein: the inner core is provided with an expansion joint.
3. A low notch laminar hook according to claim 1, wherein: the distance between the outer edges of the top parts of the two deformation angles is larger than the inner diameter of the top part of the tensioning sleeve.
4. A low notch laminar hook according to claim 1, wherein: and strip-shaped depressions are formed in the outer walls of the two deformation angles.
5. A low notch laminar hook according to claim 1, wherein: and two deformation angles are provided with fixing grooves, correspondingly, and the tensioning sleeve is provided with two fixing groove gaps.
6. A low notch laminar hook according to claim 1, wherein: an inner core locking groove is formed in the inner core, and correspondingly, a round hole is formed in the tensioning sleeve.
7. A low notch laminar hook according to claim 1, wherein: the inner core and the two deformation angles form an inner core-deformation angle assembly, and the height of the inner core-deformation angle assembly is less than or equal to that of the tensioning sleeve.
8. A low notch laminar hook according to claim 1, wherein: the top of the ball head bone hook is provided with a drill groove corresponding to the drill groove, and the inner core is provided with a ball socket through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021784807.6U CN213345898U (en) | 2020-08-24 | 2020-08-24 | Low incisura vertebral lamina hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021784807.6U CN213345898U (en) | 2020-08-24 | 2020-08-24 | Low incisura vertebral lamina hook |
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| Publication Number | Publication Date |
|---|---|
| CN213345898U true CN213345898U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021784807.6U Active CN213345898U (en) | 2020-08-24 | 2020-08-24 | Low incisura vertebral lamina hook |
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| CN (1) | CN213345898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673902A (en) * | 2022-04-29 | 2022-06-28 | 衡阳市牛角尖网络科技有限公司 | Tripod of stepless adjustment supporting legs angle |
-
2020
- 2020-08-24 CN CN202021784807.6U patent/CN213345898U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673902A (en) * | 2022-04-29 | 2022-06-28 | 衡阳市牛角尖网络科技有限公司 | Tripod of stepless adjustment supporting legs angle |
| CN114673902B (en) * | 2022-04-29 | 2023-05-26 | 衡阳市牛角尖网络科技有限公司 | Tripod capable of stepless adjusting angle of supporting leg |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A low notch lamina hook Effective date of registration: 20220316 Granted publication date: 20210604 Pledgee: Bank of Shaoxing Co.,Ltd. high tech Development Zone sub branch Pledgor: ZHEJIANG JIAYOU MEDICAL INSTRUMENT Co.,Ltd. Registration number: Y2022330000344 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230425 Granted publication date: 20210604 Pledgee: Bank of Shaoxing Co.,Ltd. high tech Development Zone sub branch Pledgor: ZHEJIANG JIAYOU MEDICAL INSTRUMENT Co.,Ltd. Registration number: Y2022330000344 |