CN117084773B - Self-locking interspinous process spreader - Google Patents
Self-locking interspinous process spreader Download PDFInfo
- Publication number
- CN117084773B CN117084773B CN202311359407.9A CN202311359407A CN117084773B CN 117084773 B CN117084773 B CN 117084773B CN 202311359407 A CN202311359407 A CN 202311359407A CN 117084773 B CN117084773 B CN 117084773B
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- Prior art keywords
- locking
- self
- ball
- interspinous process
- traction
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 125000006850 spacer group Chemical group 0.000 claims abstract description 25
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000015122 neurodegenerative disease Diseases 0.000 description 2
- 208000008035 Back Pain Diseases 0.000 description 1
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 206010025005 lumbar spinal stenosis Diseases 0.000 description 1
- 210000004705 lumbosacral region Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/885—Tools for expanding or compacting bones or discs or cavities therein
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a self-locking interspinous process spacer, comprising: the main body is provided with a clamping part which is connected with the adjacent upper spinous process, a ridge part which is connected with the adjacent lower spinous process and a traction part which is used for traction the supporting arm, the supporting arm is connected with the transverse process, when the self-locking interspinous spreader is applied, the height adjusting device can automatically trigger the clamping piece to lock the upper spinous process, the adjusting column is locked by virtue of the extrusion force between the spinous processes, the self-locking is completed, and the interspinous spreader is more stable, safe and durable.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a self-locking interspinous process spreader.
Background
For lumbar degenerative diseases, the traditional lumbar posterior interbody fusion is traumatic, and is easy to damage nerves and easily cause lumbar mobility loss and adjacent segment degeneration. The lumbar spine interspinous spreader which is one of the non-fusion systems provides a new treatment option for light and medium degenerative lumbar spinal stenosis, large lumbar disc herniation, light lumbar spondylolisthesis, discogenic lumbago and isosceles intervertebral degenerative diseases.
In the prior art, the interspinous spreader mostly relies on the dentate bulge to carry out occlusion fixation on the spinous process, the dentate bulge is embedded into the spinous process cortex to cause irreversible damage on the spinous process, the structural strength of the spinous process is reduced, and the interspinous fracture and other permanent injuries are easily caused during severe sports such as running, jumping and the like.
Aiming at the problems, the invention provides a self-locking interspinous process spreader which clamps the spinous processes by means of self clamping force and is provided with a supporting arm to connect with transverse processes, so that the interspinous process spreader is more stable, safer and more durable.
Disclosure of Invention
The invention provides a self-locking interspinous process spacer, comprising: the clamping part is arranged at the upper part and is connected with the adjacent upper spinous processes, the clamping part is abutted against the gasket by virtue of the elastic element, the gasket is provided with a first guide rail and a second guide rail which are perpendicular to each other but are not connected, the first guide rail slides in a first groove arranged on the clamping piece, and the second guide rail slides in a second groove arranged on the main body; the clamping part is also provided with an adjusting column which is in butt joint with the bottom of the clamping piece by means of threaded fit with the adjusting wheel; the middle part is provided with a traction part which comprises a first ball socket and a containing hole, the first ball socket and the containing hole are communicated by virtue of the traction hole, and a ratchet wheel which can only rotate in one direction is arranged in the containing hole; the bottom is provided with a ridge part which is connected with the adjacent lower spinous process; the support arm comprises a first section of arm and a second section of arm which are mutually nested, the first section of arm is also provided with a first ball head which is rotatably arranged in a first ball socket, the second section of arm is provided with a second ball head which is rotatably arranged in a second ball socket, and the second ball socket is arranged on the outer wall of the traction ring.
Further, the main body is further provided with a limiting protrusion, the bottom of the clamping piece is further provided with a limiting groove, and the limiting protrusion is slidably arranged in the limiting groove and has an inserting state and a separating state.
Further, the main body is also provided with a rotation stopping rib, the adjusting column is also provided with a rotation stopping gap, and the rotation stopping rib is slidably arranged in the rotation stopping gap.
Further, the lower surface of the adjusting wheel is uniformly provided with rotation stopping bulges.
Further, the first ball head is provided with a first avoiding hole, the first avoiding hole is conical, the spherical surface points to the spherical center and penetrates through the first ball head, and the conical degree is 20-30 degrees.
Further, the second ball head is provided with a second avoiding hole, the second avoiding hole is conical, the spherical surface points to the spherical center and penetrates through the second ball head, and the conical degree is 20-30 degrees.
Further, the first section arm and the second section arm are hollow tubes.
Further, the second ball socket is provided with a traction rope, and the traction rope sequentially penetrates through the second ball head, the second section arm, the first ball head and the traction hole and is connected with the ratchet wheel.
By applying the technical scheme of the invention, the self-locking interspinous process spacer comprises: the main body is provided with a clamping part which is connected with the adjacent upper spinous process, a ridge part which is connected with the adjacent lower spinous process and a traction part which is used for traction the supporting arm, the supporting arm is connected with the transverse process, when the self-locking interspinous spreader is applied, the height adjusting device can automatically trigger the clamping piece to lock the upper spinous process, and the self-locking is completed by locking the adjusting column by virtue of the extrusion force between the spinous processes, so that the interspinous spreader is more stable, safe and durable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows an exploded view of a self-locking interspinous process spacer provided in accordance with an embodiment of the invention;
fig. 2 illustrates a partial cross-sectional view of a self-locking interspinous process spacer provided in accordance with an embodiment of the invention;
fig. 3 shows a schematic structural view of the body of the self-locking interspinous process spacer of fig. 1;
fig. 4 shows a schematic structural view of a spacer of the self-locking interspinous process spacer of fig. 1;
fig. 5 shows a schematic view of the structure of the clamping plate of the self-locking interspinous process spacer of fig. 1;
fig. 6 shows a schematic structural view of an adjustment post of the self-locking interspinous process spacer of fig. 1;
fig. 7 shows a schematic view of the adjustment wheel of the self-locking interspinous process spacer of fig. 1;
fig. 8 is a schematic view showing the structure of a ratchet of the self-locking interspinous process spacer of fig. 1;
fig. 9 shows a cross-sectional view of a first segment of the arm of the self-locking interspinous process spacer of fig. 1;
fig. 10 shows a cross-sectional view of a second segment of the arm of the self-locking interspinous process spacer of fig. 1;
fig. 11 shows a schematic view of the traction ring of the self-locking interspinous process spacer of fig. 1;
fig. 12 shows a schematic view of the self-locking interspinous process spacer of fig. 1 engaged with a vertebral body.
Wherein the above figures include the following reference numerals:
10. a main body; 11. a clamping part; 111. a gasket; 1111. a first guide rail; 1112. a second guide rail; 112. a clamping piece; 1121. a first groove; 1122. a limit groove; 113. an elastic element; 114. an adjusting column; 1141. anti-rotation clearance; 115. an adjusting wheel; 1151. a rotation stopping protrusion; 116. a second groove; 117. a limit protrusion; 118. a rotation stopping rib, 12 and a traction part; 121. a first ball socket; 122. a receiving hole; 123. a traction hole; 124. a ratchet wheel; 13. a ridge portion;
20. a support arm; 21. a first segment of arms; 211. a first ball head; 2111. a first avoidance hole; 22. a second arm section; 221. a second ball head; 2211. a second avoidance hole; 23. a traction ring; 231. a second ball socket; 232. a traction rope.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 12, the present invention provides a self-locking interspinous process spacer comprising: the main body 10 is H-shaped, the upper part of the main body is provided with a clamping part 11 which is connected with the adjacent upper spinous processes, the clamping part 11 is abutted against a gasket 111 by virtue of an elastic element 113, the gasket 111 is provided with a first guide rail 1111 and a second guide rail 1112 which are mutually perpendicular but not connected, the first guide rail 1111 slides in a first groove 1121 arranged on the clamping piece 112, and the second guide rail 1112 slides in a second groove 116 arranged on the main body 10; the clamping part 11 is also provided with an adjusting column 114 and an adjusting wheel 115 which are matched by virtue of threads, and the adjusting column 114 is abutted against the bottom of the clamping piece 112; the middle part is provided with a traction part 12 which comprises a first ball socket 121 and a containing hole 122, wherein the first ball socket 121 and the containing hole 122 are communicated by virtue of a traction hole 123, and a ratchet wheel 124 which can only rotate in one direction is arranged in the containing hole 122; the bottom is provided with a ridge part 13 which is connected with the adjacent lower spinous process; the support arm 20 comprises a first section arm 21 and a second section arm 22 which are mutually nested, the first section arm 21 is further provided with a first ball head 211 which is rotatably arranged in a first ball socket 121, the second section arm 22 is provided with a second ball head 221 which is rotatably arranged in a second ball socket 231, and the second ball socket 231 is arranged on the outer wall of the traction ring 23.
As shown in fig. 3 and 5, the main body 10 is further provided with a limiting protrusion 117, the bottom of the clamping piece 112 is further provided with a limiting groove 1122, and the limiting protrusion 117 is slidably disposed in the limiting groove 1122, and has an insertion state and a release state.
As shown in fig. 3 and 6, the main body 10 is further provided with a rotation stopping rib 118, the adjusting post 114 is further provided with a rotation stopping gap 1141, and the rotation stopping rib 118 is slidably disposed in the rotation stopping gap 1141.
As shown in fig. 7, the lower surface of the adjusting wheel 115 is uniformly provided with rotation stopping protrusions 1151.
As shown in fig. 9, the first ball 211 is provided with a first avoiding hole 2111, the first avoiding hole 2111 is tapered, the spherical surface points to the center of the ball and penetrates through the first ball 211, and the taper is 20 degrees to 30 degrees.
As shown in fig. 10, the second ball head 221 is provided with a second avoiding hole 2211, the second avoiding hole 2211 is tapered, the spherical surface points to the center of the ball and penetrates through the second ball head 221, and the taper is 20 degrees to 30 degrees.
As shown in fig. 9 to 10, the first-stage arm 21 and the second-stage arm 22 are hollow tubes.
As shown in fig. 2 and 11, the second ball socket 231 is provided with a traction rope 232, and the traction rope 232 sequentially penetrates through the second ball head 221, the second arm 22, the first arm 21, the first ball head 211, and the traction hole 123, and is connected to the ratchet wheel 124.
In a specific implementation process, the engagement portion 13 is connected with an adjacent lower spinous process, the traction portion 12 pulls the support arm 20, the support arm 20 is connected with the transverse process, the ratchet 124 is tightened, then the adjusting wheel 115 is rotated to lift the adjusting column 114, the adjusting column 114 abuts against the clamping piece 112, the clamping piece 112 is lifted upwards along the first track, the limit protrusion 117 and the limit groove 1122 are further changed from an insertion state to a separation state, the elastic element 113 stretches the gasket 111 to slide along the second groove 116, the two clamping pieces 112 tighten towards the middle, the clamping portion 11 is connected with the adjacent upper spinous process, the rotation stopping protrusion 1151 on the lower surface of the adjusting wheel 115 is embedded into the main body 10 by virtue of extrusion force between the two spinous processes, the height between the spinous processes cannot be changed any more, and self-locking is completed.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A self-locking interspinous process spacer, comprising: the clamping device comprises a main body (10) which is H-shaped, wherein a clamping part (11) is arranged at the upper part and is connected with an adjacent upper spinous process, the clamping part (11) is abutted against a gasket (111) by means of an elastic element (113), the gasket (111) is provided with a first guide rail (1111) and a second guide rail (1112) which are perpendicular to each other but are not connected, the first guide rail (1111) slides in a first groove (1121) arranged on a clamping piece (112), and the second guide rail (1112) slides along a second groove (116) arranged on the main body (10); the clamping part (11) is also provided with an adjusting column (114) which is matched with the adjusting wheel (115) by virtue of threads, and the adjusting column (114) is abutted against the bottom of the clamping piece (112); the middle part is provided with a traction part (12) which comprises a first ball socket (121) and a containing hole (122), wherein the first ball socket and the containing hole are communicated by virtue of a traction hole (123), and a ratchet wheel (124) which can only rotate in one direction is arranged in the containing hole (122); the bottom is provided with a ridge part (13) which is connected with the adjacent lower spinous process; the support arm (20) comprises a first section arm (21) and a second section arm (22) which are mutually nested, the first section arm (21) is further provided with a first ball head (211) which is rotatably arranged in the first ball socket (121), the second section arm (22) is provided with a second ball head (221) which is rotatably arranged in the second ball socket (231), and the second ball socket (231) is arranged on the outer wall of the traction ring (23).
2. The self-locking interspinous process spacer of claim 1, wherein the main body (10) is further provided with a limiting protrusion (117), the bottom of the clamping piece (112) is further provided with a limiting groove (1122), and the limiting protrusion (117) is slidably disposed in the limiting groove (1122) and has an insertion state and a disengagement state.
3. The self-locking interspinous process spacer as recited in claim 1, wherein the main body (10) is further provided with a rotation stopping rib (118), the adjusting column (114) is further provided with a rotation stopping gap (1141), and the rotation stopping rib (118) is slidably disposed in the rotation stopping gap (1141).
4. The self-locking interspinous process spacer of claim 1, wherein the adjustment wheel (115) has a lower surface provided with rotation-stopping protrusions (1151) uniformly.
5. The self-locking interspinous process spacer as recited in claim 1, wherein the first ball head (211) is provided with a first avoidance hole (2111), the first avoidance hole (2111) is tapered, and the spherical surface points to the center of the ball and penetrates through the first ball head (211), and the taper is 20 degrees to 30 degrees.
6. The self-locking interspinous process spacer of claim 5 wherein the second ball head (221) is provided with a second relief hole (2211), the second relief hole (2211) is tapered, and the taper is 20 degrees to 30 degrees from the spherical surface to the center of the ball and through the second ball head (221).
7. A self-locking interspinous process spacer as recited in claim 1, wherein the first section arm (21) and the second section arm (22) are hollow tubes.
8. The self-locking interspinous process spacer as recited in claim 1, wherein the second ball socket (231) is provided with a traction rope (232), and the traction rope (232) sequentially penetrates through the second ball head (221), the second section arm (22), the first section arm (21), the first ball head (211) and the traction hole (123) and is connected with the ratchet wheel (124).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359407.9A CN117084773B (en) | 2023-10-20 | 2023-10-20 | Self-locking interspinous process spreader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311359407.9A CN117084773B (en) | 2023-10-20 | 2023-10-20 | Self-locking interspinous process spreader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117084773A CN117084773A (en) | 2023-11-21 |
| CN117084773B true CN117084773B (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311359407.9A Active CN117084773B (en) | 2023-10-20 | 2023-10-20 | Self-locking interspinous process spreader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117084773B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137628A (en) * | 2008-08-28 | 2011-07-27 | 斯恩蒂斯有限公司 | Bone-derived interspinous spacer |
| CN115670628A (en) * | 2021-07-23 | 2023-02-03 | 艾派(广州)医疗器械有限公司 | Fixator for opening and keeping interspinous space |
-
2023
- 2023-10-20 CN CN202311359407.9A patent/CN117084773B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137628A (en) * | 2008-08-28 | 2011-07-27 | 斯恩蒂斯有限公司 | Bone-derived interspinous spacer |
| CN115670628A (en) * | 2021-07-23 | 2023-02-03 | 艾派(广州)医疗器械有限公司 | Fixator for opening and keeping interspinous space |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117084773A (en) | 2023-11-21 |
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Inventor after: Wang Yu Inventor after: Wang Yasong Inventor after: Zhang Shuai Inventor after: Ding Bo Inventor after: Zhai Tianxiao Inventor after: Xiang Ye Inventor after: Li Chao Inventor before: Wang Yu Inventor before: Wang Yasong Inventor before: Zhang Shuai Inventor before: Ding Bo Inventor before: Zhai Tianxiao Inventor before: Xiang Ye Inventor before: Li Chao |
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