CN216777190U - Anti-drop's backbone U type nail system - Google Patents
Anti-drop's backbone U type nail system Download PDFInfo
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- CN216777190U CN216777190U CN202123255011.9U CN202123255011U CN216777190U CN 216777190 U CN216777190 U CN 216777190U CN 202123255011 U CN202123255011 U CN 202123255011U CN 216777190 U CN216777190 U CN 216777190U
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- nail
- pressing
- nail seat
- cap
- seat
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Abstract
The utility model relates to the field of medical instruments, in particular to an anti-falling spine U-shaped nail system which comprises a threaded rod, a pressing nail and a nail seat fixed with the upper end face of the threaded rod, wherein the nail seat is provided with a U-shaped groove, the nail seat is also provided with a fixing hole penetrating through the nail seat, the nail seat is also sleeved with a pressing cap which can be detached from the nail seat, the pressing cap is also provided with a pressing plate, the pressing plate is provided with a plurality of supporting holes penetrating through the pressing plate, the pressing cap is also provided with a connecting hole penetrating through the pressing cap, and the pressing cap is assembled with the nail seat by penetrating through the connecting hole and the fixing hole through a bolt. The bolt will press the cap to assemble integratively with the nail seat to pass behind the supporting hole on the clamp plate with the bone fixation through the screw, can effectively avoid the backbone to correct when reseing that the slack phenomenon that takes place to roll back of pedicle screw, and the bolt passes the nail seat, the bolt bottom will press the nail to withstand with pressing the nail contact, can effectively avoid pressing the nail to roll back and lead to the connective bar not hard up.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to an anti-falling spine U-shaped nail system.
Background
With the development of spinal biomechanics research and material science, the spinal internal fixation technology makes great progress, and the spinal fixation device is widely applied to surgical treatment of spinal degenerative diseases, spinal tumors, wounds, spinal infection and the like.
Spinal fixation devices typically include a connecting rod, a compression pin, and a plurality of pedicle screws. When fixed backbone, earlier with the connective bar in advance curved shape on the coronal plane of bending, then implant human backbone with the pedicle screw, reuse the connective bar and connect a plurality of pedicle screws, restore to the throne afterwards through frog type pincers etc. technique such as stick are pressed to the implementation of pressure of human backbone to rectify and restore to the throne human backbone, the backbone restores to the throne the back through pressing nail and pedicle screw cooperation with the connective bar complete fixation. However, when the spine is corrected and reset, the pedicle screw is easy to loosen and push back due to frequent action on the pedicle screw, and in the using process, the pressing nail and the pedicle screw are loosened to cause that the connecting rod is not completely fixed, so that the spine resetting operation is invalid.
The present invention is developed in view of the shortcomings of the prior art.
Disclosure of Invention
It is an object of the present invention to overcome the above-described disadvantages of the prior art and to provide a spinal staple system that is effective in preventing disengagement.
The utility model can be realized by the following technical scheme:
the utility model discloses an anti-falling spine U-shaped nail system which comprises a threaded rod, a pressing nail and a nail seat fixed with the upper end surface of the threaded rod, wherein the nail seat is provided with a U-shaped groove, the nail seat is also provided with a fixing hole penetrating through the nail seat, the nail seat is also sleeved with a pressing cap which can be detached from the nail seat, the pressing cap is also provided with a pressing plate, the pressing plate is provided with a plurality of supporting holes penetrating through the pressing plate, the pressing cap is also provided with a connecting hole penetrating through the pressing cap, and the pressing cap penetrates through the connecting hole and the fixing hole through a bolt to be assembled with the nail seat. After the pedicle screws and the bones of the spine are mutually fixed, the connecting rod passes through the U-shaped groove of each pedicle screw, the pressing nail is fixed on the nail seat through the threaded connection of the pressing nail and the nail seat, the connecting rod is tensioned after the skeleton is reset through the pressing rod technology, and the pressing nail is rotated, the bottom of the pressing nail is extruded with the connecting rod to completely fix the connecting rod, after the connecting rod is fixed, a pressing cap is sleeved on the nail seat and assembled with the bone threads after passing through the supporting hole on the pressing plate through a screw, and the bolt penetrates through the connecting hole on the pressing cap and the fixing hole on the nail seat and then is assembled with the nut thread, the pressing cap and the nail seat are assembled into a whole by the bolt, and the screw passes through the supporting hole on the pressing plate and then is fixed with the bone, so that the phenomenon that the pedicle screw is loosened and retreats when the spine is corrected and reset can be effectively avoided, and the bolt passes the nail seat, and the bolt bottom withstands with pressing the contact of nail with pressing, can effectively avoid pressing the nail to roll back and lead to the connective bar not hard up.
Preferably, the nail seat contains the tank bottom and fixes the groove side portion in tank bottom up end both sides, has formed cylindrical fixed slot between two groove side portions, be provided with the internal thread on the fixed slot, groove side portion both sides all are provided with a plurality of recesses. Through setting up and pincers complex recess that keep silent that resets, when fixing the back to the backbone, through the protruding and recess cooperation use on keeping silent of the pincers that reset, reset pincers from the left and right sides tight pedicle screw that presss from both sides, can not interfere the connective bar that the fore-and-aft direction passed, great use that has made things convenient for pincers that reset.
Preferably, the pressure plate is rotatably connected with the pressure cap. The pressing plate is rotated to adjust the supporting hole to a proper position, and the supporting hole is opposite to the position where the screw is inserted into the bone, so that the screw can be conveniently inserted into the bone to be fixed.
Preferably, the bottom of the threaded rod is also provided with a notch. Through setting up the breach, when the pedicle screw was fixed, the threaded rod entered into inside the bone more easily.
Compared with the prior art, the utility model has the following advantages:
1. the bolt is to press cap and nail seat equipment an organic whole to pass on the clamp plate supporting hole back through the screw and fixed with the bone, the lax phenomenon that takes place to roll back of pedicle screw when can effectively avoiding the backbone to correct the reduction.
2. The bolt passes the nail seat, and the bolt bottom withstands with pressing the contact of nail with pressing, can effectively avoid pressing the nail to roll back and lead to the connective bar not hard up.
[ description of the drawings ]
The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
in the figure: 1. a threaded rod; 2. a nail seat; 201. the bottom of the tank; 202. a slot side; 203. fixing grooves; 204. a groove; 205. a fixing hole; 3. pressing nails; 4. a connecting rod; 5. a notch; 6. pressing the cap; 7. pressing a plate; 8. a support hole; 9. a bolt; 10. connecting holes; 11. a nut;
[ detailed description ] embodiments
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:
as shown in fig. 1 and 4, the utility model discloses an anti-drop spine U-shaped nail system, which comprises a threaded rod 1, a pressing nail 3 and a nail seat 2 fixed with the upper end surface of the threaded rod 1, wherein the nail seat 2 is provided with a U-shaped groove, the nail seat 2 is also provided with a fixing hole 205 penetrating through the nail seat 2, the nail seat 2 is also sleeved with a pressing cap 6 which can be detached from the nail seat 2, the pressing cap 6 is also provided with a pressing plate 7, the pressing plate 7 is provided with a plurality of supporting holes 8 penetrating through the pressing plate 7, the pressing cap 6 is also provided with a connecting hole 10 penetrating through the pressing cap 6, and the pressing cap 6 penetrates through the connecting hole 10 and the fixing hole 205 through a bolt 9 to be assembled with the nail seat 2. After the pedicle screws and bones of the spine are mutually fixed, the connecting rod 4 passes through a U-shaped groove of each pedicle screw, the pressing screw 3 is fixed on the nail seat 2 through the threaded connection of the pressing screw 3 and the nail seat 2, the connecting rod 4 is tightened after the bones are reset through the pressing rod technology and is rotated to press the nail 3, the connecting rod 4 is completely fixed after the bottom of the pressing screw 3 is extruded with the connecting rod 4, the connecting rod 4 is fixed, the nail seat 2 is sleeved with the pressing cap 6 and assembled with the bones through the screw after passing through the supporting hole 8 on the pressing plate 7, the bolt 9 passes through the connecting hole 10 on the pressing cap 6 and the fixing hole 205 on the nail seat 2 and assembled with the nut 11 through the screw, the pressing cap 6 and the nail seat 2 are assembled into a whole through the bolt 9, and is fixed with the bones after passing through the screw through the supporting hole 8 on the pressing plate 7, the phenomenon that the pedicle screws are loosened and return when the spine is reset can be effectively avoided, and the bolt 9 passes through the nail seat 2, the bottom of the bolt 9 is contacted with the pressure nail 3 to prop the pressure nail 3, so that the situation that the pressure nail 3 returns to cause the connecting rod 4 to be loosened can be effectively avoided.
Wherein, nail seat 2 contains tank bottom 201 and fixes the groove lateral part 202 in tank bottom 201 up end both sides, has formed cylindrical fixed slot 203 between two groove lateral parts 202, is provided with the internal thread on the fixed slot 203, and groove lateral part 202 both sides all are provided with a plurality of recesses 204. Through setting up and pincers that reset and keeping silent complex recess 204, when the backbone is corrected after the pedicle screw is fixed, through the protruding and recess 204 cooperation use on keeping silent of the pincers that reset, the pincers that reset presss from both sides tight pedicle screw from the left and right sides, can not interfere the connective bar 4 that the fore-and-aft direction passed, great use that has made things convenient for the pincers that reset.
Wherein, the pressure plate 7 is rotationally connected with the pressure cap 6. The pressing plate 7 is rotated to adjust the supporting hole 8 to a proper position, and the supporting hole 8 is opposite to the position where the screw is inserted into the bone, so that the screw can be conveniently inserted into the bone to be fixed.
Wherein, the bottom of the threaded rod 1 is also provided with a gap 5. Through setting up breach 5, when the pedicle screw is fixed, inside the bone was entered into more easily to threaded rod 1.
The above description is only a preferred embodiment of the present invention, and it should be noted that a person skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the technical principles of the present invention, and such changes, modifications, substitutions and alterations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides an anti-drop's backbone U type nail system, includes the threaded rod, presses the nail and with the fixed nail seat of threaded rod up end, its characterized in that: the nail seat has U type groove, still be provided with the fixed orifices that runs through the nail seat on the nail seat, still cup jointed the pressure cap that can dismantle with the nail seat on the nail seat, still be provided with the clamp plate on the pressure cap, be provided with a plurality of supported holes that run through the clamp plate on the clamp plate, still be provided with the connecting hole that runs through the pressure cap on the pressure cap, the pressure cap passes connecting hole and fixed orifices and nail seat equipment through the bolt.
2. A drop-resistant spinal staple system as recited in claim 1, wherein: the nail seat contains tank bottom and fixes the groove side portion in tank bottom up end both sides, has formed cylindrical fixed slot between two groove side portions, be provided with the internal thread on the fixed slot, groove side portion both sides all are provided with a plurality of recesses.
3. A drop-resistant spinal staple system as recited in claim 1, wherein: the pressing plate is rotatably connected with the pressing cap.
4. A drop-resistant spinal staple system as recited in claim 1, wherein: the bottom of the threaded rod is also provided with a notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123255011.9U CN216777190U (en) | 2021-12-23 | 2021-12-23 | Anti-drop's backbone U type nail system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123255011.9U CN216777190U (en) | 2021-12-23 | 2021-12-23 | Anti-drop's backbone U type nail system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216777190U true CN216777190U (en) | 2022-06-21 |
Family
ID=82009615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123255011.9U Active CN216777190U (en) | 2021-12-23 | 2021-12-23 | Anti-drop's backbone U type nail system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216777190U (en) |
-
2021
- 2021-12-23 CN CN202123255011.9U patent/CN216777190U/en active Active
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