CN211512015U - A way internal fixation instrument of neck posterior for basis cranii is sunken to reset - Google Patents
A way internal fixation instrument of neck posterior for basis cranii is sunken to reset Download PDFInfo
- Publication number
- CN211512015U CN211512015U CN202020175091.3U CN202020175091U CN211512015U CN 211512015 U CN211512015 U CN 211512015U CN 202020175091 U CN202020175091 U CN 202020175091U CN 211512015 U CN211512015 U CN 211512015U
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- China
- Prior art keywords
- screw
- fixed
- mount pad
- fixed rod
- neck
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- Expired - Fee Related
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- 210000001154 skull base Anatomy 0.000 title claims abstract description 25
- 210000003128 head Anatomy 0.000 claims abstract description 6
- 210000000103 occipital bone Anatomy 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 208000022148 skull disease Diseases 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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Abstract
The utility model discloses a neck way of escape internal fixation machinery for sunken resetting of skull base, including the screw mount pad, the fixed rod mounting hole has been seted up to screw mount pad both sides, and screw mount pad upper end set up threaded hole to screw mount pad screw hole and fixed rod mounting hole intercommunication, the fixed rod mounting hole is interior to be inserted and is equipped with the occipital neck fixed rod, and occipital neck fixed rod outside set up the screw fixed slot to the inside constant head tank that is equipped with "ten" shape of screw fixed slot, be equipped with fixed rod fixed screw in the screw hole of screw mount pad upper end, and fixed rod fixed screw lower extreme is equipped with the locating piece of "ten" shape. This a way internal fixation instrument of neck back for basis cranii is sunken to reset is provided with location fastening structure, can avoid fastening screw not hard up condition to appear, improves the effect of fixed external fixed stick.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a posterior cervical internal fixation instrument for skull base depression restoration.
Background
Basis cranii depression is a common deformity of the occipital neck, and patients are often accompanied by significant atlantoaxial dislocation and superior cervical sequence abnormality. The types of atlantoaxial dislocation of patients with depressed cranial base are mainly divided into two types: lateral dislocation caused by rearward movement of the dentate process and longitudinal dislocation caused by upward movement of the dentate process. The dislocated dentate process presses the spinal cord upwards and backwards to be the pathological mechanism of clinical symptoms; therefore, effective reduction of atlantoaxial lateral and longitudinal dislocation in basis cranii depression is the key to obtain satisfactory therapeutic effect.
The fixing apparatus for the basis cranii depression is generally fixed by screws in the setting process, and the screws are often tightened, so that the threads on the screws are easily damaged, and the fixing rod is easily loosened when the external fixing rod is fixed, so that the fixing rod is loosened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a way internal fixation machinery after neck for sunken restoration of skull base to solve the screw that the screw on the fixed apparatus that the sunken disease of skull base was used on the existing market that above-mentioned background art provided and can appear the tension condition, the damage appears easily in the screw thread on the screw like this, appears not hard up the condition easily when fixed outside fixed stick, leads to the fixed stick problem of the condition of not hard up smooth silk to appear.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a way internal fixation machinery behind neck for sunken restoration of basis cranii, includes the screw mount pad, the fixed rod mounting hole has been seted up to screw mount pad both sides, and screw mount pad upper end screw hole to screw mount pad screw hole communicates with the fixed rod mounting hole, it is equipped with occipital neck fixed rod to insert in the fixed rod mounting hole, and occipital neck fixed rod outside screw fixation groove has been seted up to inside constant head tank that is equipped with "ten" shape of screw fixation groove, be equipped with fixed rod fixed screw in the screw hole of screw mount pad upper end, and fixed rod fixed screw lower extreme is equipped with the locating piece of "ten" shape.
Preferably, the lower end of the screw mounting seat is provided with a screw fixing seat, and the central part of the lower end of the screw fixing seat is provided with an occipital bone reduction screw.
Preferably, the screw fixing grooves are uniformly distributed on the occipital neck fixing rod and are on the same horizontal line.
Preferably, the length of the fixing rod fixing screw is smaller than the inner depth of a screw hole at the upper end of the screw mounting seat.
Preferably, the inner lower end face of the fixing rod mounting hole is arc-shaped, and the radian of the inner part of the fixing rod mounting hole is equal to the radian of the outer part of the pillow neck fixing rod.
Preferably, the outer shape of the positioning block is matched with the inner shape of the positioning groove, and the edge of the positioning block is arc-shaped.
Compared with the prior art, the beneficial effects of the utility model are that: this a way internal fixation instrument of neck back for basis cranii is sunken to reset is provided with location fastening structure, can avoid fastening screw not hard up condition to appear, improves the effect of fixed external fixed stick. The screw fixing seat of the screw mounting seat lower end of the device plays a role in connecting the occipital bone reset screw, so that the occipital bone reset screw can be connected with other instruments, the positioning block on the fixing rod fixing screw can be clamped by the positioning groove in the screw fixing groove, the loosening condition of the fixing rod fixing screw is avoided, the fixing rod fixing screw can be clamped firmly at the position of the occipital neck fixing rod, and the sliding condition of the screw mounting seat on the occipital neck fixing rod is avoided.
Drawings
FIG. 1 is a schematic view of a posterior cervical internal fixation device for skull base reduction of the present invention;
FIG. 2 is a top view of the screw mounting seat of the posterior cervical internal fixation instrument for skull base reduction of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 of a posterior cervical fixation apparatus for cranial base reduction according to the present invention;
fig. 4 is an enlarged structural diagram of the posterior cervical internal fixation instrument for skull base reduction shown in fig. 2.
In the figure: 1. the occipital bone reduction screw comprises a screw mounting seat, 2, an occipital neck fixing rod, 3, a screw fixing seat, 4, an occipital bone reduction screw, 5, a screw fixing groove, 6, a fixing rod fixing screw, 7, a positioning groove, 8, a fixing rod mounting hole, 9 and a positioning block.
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. 1-4, the present invention provides a technical solution: a retrocervical internal fixation instrument for skull base depression reduction comprises a screw mounting seat 1, wherein fixing rod mounting holes 8 are formed in two sides of the screw mounting seat 1, a threaded hole is formed in the upper end of the screw mounting seat 1, the threaded hole of the screw mounting seat 1 is communicated with the fixing rod mounting holes 8, a screw fixing seat 3 is arranged at the lower end of the screw mounting seat 1, an occipital bone reduction screw 4 is arranged at the central part of the lower end of the screw fixing seat 3, the screw fixing seat 3 at the lower end of the screw mounting seat 1 of the structure plays a role in fixing the occipital bone reduction screw 4, so that the occipital bone reduction screw 4 can be connected to other instruments, an occipital neck fixing rod 2 is inserted into the fixing rod mounting hole 8, a screw fixing groove 5 is formed in the outside of the occipital neck fixing rod 2, a cross-shaped positioning groove 7 is formed in the screw fixing groove 5, and, the screw fixing grooves 5 are on the same horizontal line, the screw fixing grooves 5 of the structure play a role of accommodating fixing rod fixing screws 6, one ends of the fixing rod fixing screws 6 can be clamped, the situation that the screw mounting seat 1 moves horizontally on the occipital neck fixing rod 2 is avoided, meanwhile, the screw fixing seats 3 on the screw mounting seat 1 face the same direction, the lower end face of the inner portion of the fixing rod mounting hole 8 is arc-shaped, the radian of the inner portion of the fixing rod mounting hole 8 is equal to the external radian of the occipital neck fixing rod 2, the fixing rod mounting hole 8 of the structure plays a role of accommodating the occipital neck fixing rod 2 and can clamp the position of the occipital neck fixing rod 2, the lower end of the occipital neck fixing rod 2 can be attached to the inner portion of the fixing rod mounting hole 8, the effect of fixing the occipital neck fixing rod 2 is improved, the fixing rod fixing screws 6 are arranged in screw holes at the upper end of the screw mounting seat 1, and the lower ends of the fixing, the length of fixed stick fixed screw 6 is less than the inside degree of depth in 1 upper end screw hole of screw mount pad, fixed stick fixed screw 6 of this structure can enter into 1 upper end screw hole of screw mount pad completely, can not stretch out in 1 upper end screw hole of screw mount pad, reduce the 1 bellied condition in surface of screw mount pad, the external shape of locating piece 9 is identical with the inside shape of constant head tank 7, and the edge of locating piece 9 is the arc, locating piece 9 of this structure can enter into in the constant head tank 7, so that block the position of locating piece 9, avoid fixed stick fixed screw 6 the not hard up condition to appear, improve the effect of fixed stick fixed screw 6.
The working principle is as follows: when using this a way internal fixation instrument of neck back for sunken restoration of skull base, at first pass the fixed rod mounting hole 8 on the screw mount pad 1 with occipital neck fixation stick 2, then pass the screw hole on the screw mount pad 1 with fixation stick fixed screw 6, make in the screw fixation groove 5 on the occipital neck fixation stick 2 can enter into fixation stick fixed screw 6, the locating piece 9 of 6 one end of fixed rod fixed screw can block in the constant head tank 7 of screw fixation groove 5 inside simultaneously, can block the position of fixed rod fixed screw 6 like this, avoid the not hard up condition to appear in fixation stick fixed screw 6, the cover that makes screw mount pad 1 can be firmly is established on occipital neck fixation stick 2, only need at last on installing occipital bone reset screw 4 on screw fixation seat 3 with other parts, thereby accomplish a series of work.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A way internal fixation instrument of neck back for sunken restoration of basis cranii, includes screw mount pad (1), its characterized in that: fixed rod mounting hole (8) have been seted up to screw mount pad (1) both sides, and screw mount pad (1) upper end set up threaded hole to screw mount pad (1) screw hole is linked together with fixed rod mounting hole (8), fixed rod mounting hole (8) interpolation is equipped with occipital neck fixed rod (2), and occipital neck fixed rod (2) outside set up screw fixed slot (5) to screw fixed slot (5) inside constant head tank (7) that are equipped with "ten" shape, be equipped with fixed rod fixed screw (6) in screw hole on screw mount pad (1), and fixed rod fixed screw (6) lower extreme is equipped with locating piece (9) of "ten" shape.
2. The retrocervical internal fixation instrument for reduction of basis cranii depression according to claim 1, wherein: the lower end of the screw mounting seat (1) is provided with a screw fixing seat (3), and the center part of the lower end of the screw fixing seat (3) is provided with an occipital bone reduction screw (4).
3. The retrocervical internal fixation instrument for reduction of basis cranii depression according to claim 1, wherein: the screw fixing grooves (5) are uniformly distributed on the occipital neck fixing rod (2), and the screw fixing grooves (5) are on the same horizontal line.
4. The retrocervical internal fixation instrument for reduction of basis cranii depression according to claim 1, wherein: the length of the fixing rod fixing screw (6) is smaller than the inner depth of a screw hole in the upper end of the screw mounting seat (1).
5. The retrocervical internal fixation instrument for reduction of basis cranii depression according to claim 1, wherein: the inner lower end face of the fixing rod mounting hole (8) is arc-shaped, and the inner radian of the fixing rod mounting hole (8) is equal to the outer radian of the pillow neck fixing rod (2).
6. The retrocervical internal fixation instrument for reduction of basis cranii depression according to claim 1, wherein: the outer shape of the positioning block (9) is matched with the inner shape of the positioning groove (7), and the edge of the positioning block (9) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020175091.3U CN211512015U (en) | 2020-02-17 | 2020-02-17 | A way internal fixation instrument of neck posterior for basis cranii is sunken to reset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020175091.3U CN211512015U (en) | 2020-02-17 | 2020-02-17 | A way internal fixation instrument of neck posterior for basis cranii is sunken to reset |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211512015U true CN211512015U (en) | 2020-09-18 |
Family
ID=72459928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020175091.3U Expired - Fee Related CN211512015U (en) | 2020-02-17 | 2020-02-17 | A way internal fixation instrument of neck posterior for basis cranii is sunken to reset |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211512015U (en) |
-
2020
- 2020-02-17 CN CN202020175091.3U patent/CN211512015U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20200918 |