CN210354786U - Distraction device of adaptation pedicle of vertebral arch screw - Google Patents
Distraction device of adaptation pedicle of vertebral arch screw Download PDFInfo
- Publication number
- CN210354786U CN210354786U CN201920587415.1U CN201920587415U CN210354786U CN 210354786 U CN210354786 U CN 210354786U CN 201920587415 U CN201920587415 U CN 201920587415U CN 210354786 U CN210354786 U CN 210354786U
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- adjusting rod
- sleeve
- screw
- pincers mouth
- rod
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Abstract
The utility model discloses an adaptation pedicle of vertebral arch screw struts device, including handle and pincers mouth, the expansion end of handle set up spacing rack, the handle inboard sets up reset spring, and reset spring and spacing rack work cooperation are fixed the handle position, pincers mouth is including pincers mouth body and sleeve, the sleeve sets up with pincers mouth body mutually perpendicular, sleeve and pincers mouth body rotatable coupling, pincers mouth body sets up to the structure of can buckling. The utility model discloses an angle adjustment mechanism's setting will strut the angle that the device was propped up in the pincers mouth part branch triplex. Therefore, the utility model discloses not only can adapt to and use under the different condition of screw fixation direction, angle of difference, can also adapt to and use under the different condition of patient's notched size, the degree of depth difference, angle.
Description
Technical Field
The utility model belongs to the technical field of medical equipment, concretely relates to distraction device of adaptation pedicle of vertebral arch screw.
Background
The spine lumbar section posterior pedicle screw-rod fixation, fusion is a common means for solving spinal degenerative diseases at present. TLIF (transforminal luma integer fusion) is one of the more widely used techniques. The intervertebral fusion device is characterized in that a part of the upper and lower articular processes are cut from one side, enter a safe operation triangular area formed by the dura mater and the nerve roots and a part of the vertebral canal to realize the operation of interbody fusion, do not enter the central vertebral canal, and do not need to excessively draw the dura mater and the nerve roots. More importantly, the opposite side vertebral plate and the facet joint are reserved, the structures of the spinous process and the ligament are reserved, and the structure of the tension band at the back of the waist can be reconstructed. Currently, in the case of the TLIF, pedicle screws (standard monoaxial or polyaxial) of the inferior and superior vertebral bodies are usually first placed into the target intervertebral disc. The symptomatic lateral part, the inferior articular process, is resected. Exposing the exiting nerve roots and part of the dura mater. The safe area between the exiting nerve root and the dura reveals the diseased disc. The intervertebral disc is removed and the interbody fusion cage is placed. And finally, installing a connecting rod between the pedicle screws for fixing. However, in this operation, the operation space is narrow, so that the nerve root and the dura mater are not damaged, and excessive superior and inferior articular processes and vertebral plate bone are sometimes cut off. This reduces the initial cost of TLIF technology (less bone mass and loss of ligament structure, greater neurological safety). The firmly-placed pedicle screws are used in cooperation with a certain distraction device, so that the operation area can be enlarged, the operation safety is ensured, and more importantly, non-reproducible bone is reserved as much as possible. Because the pedicle of vertebral arch screw divide into standard monoaxial type or multiaxis type two kinds, in order to cooperate different screws to use betterly, then need the ware that struts of an adjustable angle, not only can adapt to the screw and use, still need adapt to the different incision depth that different patient individual differences produced, use under the required different angles of safe operation, consequently, based on this technical problem, it is very necessary to develop the device that struts that can adapt to pedicle of vertebral arch screw.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an adaptation pedicle of vertebral arch screw struts device.
The utility model aims at realizing like this, including handle and pincers mouth, the expansion end of handle set up spacing rack, the handle inboard sets up reset spring, and reset spring and spacing rack work cooperation are fixed the handle position, pincers mouth is including pincers mouth body and sleeve, sleeve and pincers mouth body mutually perpendicular set up, sleeve and pincers mouth body rotatable coupling, pincers mouth body sets up to the structure of can buckling.
The utility model discloses an angle adjustment mechanism's setting, the pincers mouth part that will strut the device divides the triplex to adjust the angle that struts the device, first adjustable part is the pincers mouth department that is close to the handle end, cooperation angle of adjustment through the gear tooth's socket and location, lock through lock nut, can strut the direction perpendicularly to the pincers mouth that struts the device and carry out angle adjustment, the second adjustable part is for keeping away from the handle end, be close to sleeve part, the structure of regulation with keep away from with first part, the third adjustable part is telescopic angle modulation, can carry out 360 degrees rotation regulation along the direction of perpendicular to adjusting lever through the cooperation of screw rod screw between sleeve and the second grade adjusting lever. Therefore, the utility model discloses not only can adapt to and use under the different condition of screw fixation direction, angle of difference, can also adapt to and use under the different condition of patient's notched size, the degree of depth difference, angle.
Drawings
FIG. 1 is a schematic front view of the overall structure of the present invention;
FIG. 2 is a left side view of the present invention;
fig. 3 is an exploded view of the present invention;
FIG. 4 is a schematic view of the assembly of the present invention;
in the figure: the clamp comprises 1 to a handle, 2 to a clamp mouth body, 21 to a base body, 22-1 to a first-stage adjusting rod, 22-2 to a second-stage adjusting rod, 3 to a sleeve, 31 to a screw rod, 4 to a limiting rack, 5 to an angle adjusting mechanism, 51-1 to a gear, 51-2 to a stud, 52 to a fixing groove, 52-1 to a tooth groove, 52-2 to a counter sink groove, 53 to a locking nut and 6 to a reset spring.
Detailed Description
The following description of the present invention is further illustrated with reference to the accompanying drawings, but the present invention is not limited in any way, and all changes made based on the teaching of the present invention fall into the protection scope of the present invention.
As shown in fig. 1-4, the utility model discloses a handle 1 and pincers mouth, the expansion end of handle 1 set up spacing rack 4, handle 1 inboard sets up reset spring 5, and reset spring 5 and spacing rack 4 work cooperation are fixed handle 1 position, the pincers mouth is including pincers mouth body 2 and sleeve 3, sleeve 3 sets up with pincers mouth body 2 mutually perpendicular, sleeve 3 and pincers mouth body 2 swivelling joint, pincers mouth body 2 sets up to the structure of can buckling.
The forceps nozzle body 2 comprises a base body 21 and an adjusting rod 22-1, an angle adjusting mechanism 5 is arranged at the joint between the adjusting rod 22-1 and the base body 21, and the sleeve 3 is arranged at the other end of the adjusting rod 22-1 and is perpendicular to the adjusting rod 22-1.
The angle adjusting mechanism 5 comprises a gear column, a fixing groove 52 and a locking nut 53, the lower portion of the gear column is provided with a gear 51-1, the upper portion of the gear column is provided with a stud 51-2, the fixing groove 52 comprises a lower tooth socket 52-1 and an upper counter sink groove 52-2, the gear 51-1 is in positioning fit with the tooth socket 52-1, the locking nut 53 is arranged in the counter sink groove 52-2 and is in threaded locking fit with the stud 51-2, and the gear column and the fixing groove 52 are respectively arranged at the connecting end of the adjusting rod 22-1 and the base body 21.
The gear column is arranged on the adjusting rod 22-1, the fixing groove 52 is arranged on the base body 21, and the sinking platform groove 52-2 of the fixing groove 52 is arranged on the outer side surface of the base body 21, namely the outer side surface of the clamp mouth, so that the nut can be screwed conveniently.
A secondary adjusting rod 22-2 is further arranged between the adjusting rod 22-1 and the sleeve 3, an angle adjusting mechanism 5 is arranged between the adjusting rod 22-1 and the secondary adjusting rod 22-2 for connection, the adjusting rod 22-1 is connected with the base body 21, and the secondary adjusting rod 22-2 is connected with the sleeve 3.
The end part of the second-stage adjusting rod 22-2 is provided with a gear column which is matched with a fixing groove 52 on the end part of the adjusting rod 22-1, and a counter sink groove 52-2 on the fixing groove 52 is arranged on the outer side surface of the adjusting rod 22-1, namely the outer end surface of the clamp mouth, so that the nut is convenient to screw.
The sleeve 3 is vertically provided with a screw 31, the connecting end of the secondary adjusting rod 22-2 and the adjusting rod 22-1 is provided with a screw hole, the screw 31 is matched with the screw hole, the screw 31 is provided with an adjusting nut, and the relative angle relation between the sleeve 3 and the secondary adjusting rod 22-2 can be adjusted.
The sleeve 3 is provided with a screw hole, the connecting end of the secondary adjusting rod 22-2 and the sleeve 3 is provided with a screw rod 31, the screw rod 31 is matched with the screw hole, an adjusting nut is arranged on the screw rod 31, and the relative angle relation between the sleeve 3 and the secondary adjusting rod 22-2 can be adjusted.
The utility model discloses a use method:
1. different patients use different incisions: different incision depths that different patient individuality produced, the required different angles of safe operation, but accessible sleeve and the swivelling joint of pincers mouth body, and pincers mouth body set up to the structure of can buckling and adjust and obtain. The width is propped open, the movable end of the handle is provided with a limit rack, and the inner side of the handle is provided with a return spring to be matched with the handle for use.
2. The cooperation set screw uses: the sleeve is inserted into the bottom of the screw tail along the axis of the screw along the screw tail of the pedicle screw. The movable end of the handle is provided with the limiting rack, and the inner side of the handle is provided with the return spring which is matched for use, so that the handle can be unfolded.
3. The cooperation universal screw uses: the fixing inner core is screwed in along the universal screw tail, so that the axis of the universal screw tail is reset to be consistent with the screw body. At the moment, the universal nail becomes a fixed nail, and the sleeve is inserted into the bottom of the nail tail along the axis of the screw along the screw tail of the pedicle screw. The movable end of the handle is provided with the limiting rack, and the inner side of the handle is provided with the return spring which is matched for use, so that the handle can be unfolded.
Claims (8)
1. The utility model provides an adaptation pedicle of vertebral arch screw struts device, includes handle (1) and pincers mouth, the expansion end of handle (1) set up spacing rack (4), handle (1) inboard sets up reset spring (6), and reset spring (6) and spacing rack (4) work cooperation are fixed handle (1) position, its characterized in that pincers mouth is including pincers mouth body (2) and sleeve (3), sleeve (3) and pincers mouth body (2) mutually perpendicular set up, sleeve (3) and pincers mouth body (2) rotatable coupling, pincers mouth body (2) set up to the structure of can buckling.
2. The distraction device for the adaptive pedicle screw according to claim 1, wherein the forceps mouth body (2) comprises a base body (21) and an adjusting rod (22-1), an angle adjusting mechanism (5) is arranged at the joint between the adjusting rod (22-1) and the base body (21), and the sleeve (3) is arranged at the other end of the adjusting rod (22-1) and is perpendicular to the adjusting rod (22-1).
3. The distraction device for the adaptive pedicle screw according to claim 2, wherein the angle adjusting mechanism (5) comprises a gear column, a fixing groove (52) and a locking nut (53), the lower part of the gear column is provided with a gear (51-1), the upper part of the gear column is provided with a stud (51-2), the fixing groove (52) comprises a lower toothed groove (52-1) and an upper counter groove (52-2), the gear (51-1) is in positioning fit with the toothed groove (52-1), the locking nut (53) is arranged in the counter groove (52-2) and is in threaded locking fit with the stud (51-2), and the gear column and the fixing groove (52) are respectively arranged at the connecting ends of the adjusting rod (22-1) and the base body (21).
4. The distraction device according to claim 3, wherein said gear post is arranged on the adjusting rod (22-1), said fixing groove (52) is arranged on the base body (21), and the counter sink groove (52-2) of said fixing groove (52) is arranged on the outer side of the base body (21), i.e. on the outer side of the forceps mouth, to facilitate the tightening of the nut.
5. The distraction device for the adaptive pedicle screw according to claim 4, wherein a secondary adjusting rod (22-2) is further arranged between the adjusting rod (22-1) and the sleeve (3), an angle adjusting mechanism (5) is arranged between the adjusting rod (22-1) and the secondary adjusting rod (22-2) for connection, the adjusting rod (22-1) is connected with the base body (21), and the secondary adjusting rod (22-2) is connected with the sleeve (3).
6. The distraction device for the adapted pedicle screw according to claim 5, wherein a gear column is arranged at the end of the secondary adjusting rod (22-2) and is matched with a fixing groove (52) on the end of the adjusting rod (22-1), and a counter sink groove (52-2) on the fixing groove (52) is arranged on the outer side surface of the adjusting rod (22-1), namely the outer end surface of the forceps mouth, so as to facilitate the nut screwing.
7. The distraction device for the adaptive pedicle screw according to claim 1, wherein a screw rod (31) is vertically arranged on the sleeve (3), a screw hole is arranged at the connecting end of the secondary adjusting rod (22-2) and the adjusting rod (22-1), the screw rod (31) is matched with the screw hole, an adjusting nut is arranged on the screw rod (31), and the relative angle relationship between the sleeve (3) and the secondary adjusting rod (22-2) can be adjusted.
8. The distraction device according to claim 1, wherein a screw hole is provided on the sleeve (3), a screw rod (31) is provided at the connection end of the secondary adjusting rod (22-2) and the sleeve (3), the screw rod (31) is engaged with the screw hole, and an adjusting nut is provided on the screw rod (31) to adjust the relative angular relationship between the sleeve (3) and the secondary adjusting rod (22-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920587415.1U CN210354786U (en) | 2019-04-26 | 2019-04-26 | Distraction device of adaptation pedicle of vertebral arch screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920587415.1U CN210354786U (en) | 2019-04-26 | 2019-04-26 | Distraction device of adaptation pedicle of vertebral arch screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210354786U true CN210354786U (en) | 2020-04-21 |
Family
ID=70258864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920587415.1U Expired - Fee Related CN210354786U (en) | 2019-04-26 | 2019-04-26 | Distraction device of adaptation pedicle of vertebral arch screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210354786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101419A (en) * | 2019-04-26 | 2019-08-09 | 昆明医科大学第二附属医院 | A kind of device for spreading being adapted to pedicle screw |
-
2019
- 2019-04-26 CN CN201920587415.1U patent/CN210354786U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101419A (en) * | 2019-04-26 | 2019-08-09 | 昆明医科大学第二附属医院 | A kind of device for spreading being adapted to pedicle screw |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |
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| CF01 | Termination of patent right due to non-payment of annual fee |