CN109498077B - Lumbar spondylolisthesis repositor - Google Patents
Lumbar spondylolisthesis repositor Download PDFInfo
- Publication number
- CN109498077B CN109498077B CN201811351948.6A CN201811351948A CN109498077B CN 109498077 B CN109498077 B CN 109498077B CN 201811351948 A CN201811351948 A CN 201811351948A CN 109498077 B CN109498077 B CN 109498077B
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- China
- Prior art keywords
- handle
- cavity
- lifting rod
- shaped groove
- rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to a lumbar spondylolisthesis restorer which comprises a handle and an opening head, wherein an included angle is formed between the handle and the opening head, the included angle is 90-145 degrees, the handle comprises a first handle and a second handle, the first handle is hinged with the second handle, the front ends of the first handle and the second handle are respectively provided with a first opening head and a second opening head, the first opening head comprises a connecting rod and a lifting rod, the rear portion of the lifting rod is sleeved in the connecting rod, the front ends of the lifting rod and the second opening head are both in a sheet shape, and the outer side surfaces of the first opening head and the second opening head are both provided with triangular teeth. The invention can realize the distraction of the vertebral body and the lifting of the vertebral body. Unnecessary operation in the operation is reduced to a great extent, the operation time is saved, and the operation risk is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a lumbar spondylolisthesis restorer.
Background
The existing lumbar spondylolisthesis reduction operation is realized by loosening joints in the operation and combining the lifting and pulling of pedicle screws on a superior rod to reduce the spondylolisthesis, and has a plurality of defects: 1. some loosening is difficult, and excessive surgical operations increase bleeding during surgery, surgical risks and the like; 2. the effect of restoring the slipped vertebral body by lifting the pedicle screw is not expected, and the slipped vertebral body can not be restored when the nail is loosened or loosened incompletely.
Chinese patent (CN 204033453U) discloses a lumbar spondylolisthesis intervertebral space distraction repositor, which comprises a parallel distraction forceps body and two forceps heads connected with the parallel distraction forceps body, and can distract the adjacent vertebral bodies in parallel within a certain range during operation by utilizing the characteristic that the forceps heads can be distracted in parallel by the parallel distraction forceps body; when the restorer is used for restoring and slipping vertebral bodies, the restorer can promote the slipping vertebral bodies to restore by being matched with pedicle screws, and the situation that nails are loosened and the like is caused by lifting and pulling in the operation is not favorable for the operation.
In conclusion, the existing lumbar spondylolisthesis reduction surgical instrument or method is difficult and tedious to operate and is not ideal in reduction.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device for opening and restoring a spondylolisthesis body in the process of a lumbar spondylolisthesis operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a lumbar spondylolisthesis restorer which comprises a handle and a spreading head, wherein an included angle is formed between the handle and the spreading head, the included angle is 90-145 degrees, the handle comprises a first handle and a second handle, the first handle is hinged with the second handle, the front ends of the first handle and the second handle are respectively provided with a first spreading head and a second spreading head, the first spreading head comprises a connecting rod and a lifting rod, the rear portion of the lifting rod is sleeved in the connecting rod and is in sliding connection with the connecting rod, the front ends of the lifting rod and the second spreading head are both in a sheet shape, and the outer side faces of the lifting rod and the second spreading head are both provided with triangular teeth.
Furthermore, the front end of the connecting rod is provided with a first cavity in a cuboid shape, the rear end of the first cavity is a cylindrical second cavity, and the inner wall of the second cavity is provided with threads; the rear part of the lifting rod is of a cuboid structure matched with the first cavity, the rear part of the lifting rod is rotatably connected with a threaded rod, and the threaded rod is in threaded fit with the second cavity and penetrates out of the second cavity.
Furthermore, a first U-shaped groove is formed in the tail end of the lifting rod, a second U-shaped groove is formed in the front end of the first U-shaped groove, and the depth of the second U-shaped groove is larger than that of the first U-shaped groove.
Further, the threaded rod includes spacing platform, smooth section and the screw thread section that sets gradually after to in the past, spacing platform and second U-shaped groove phase-match, smooth section and first U-shaped groove phase-match, the tail end fixedly connected with knob of screw thread section.
Furthermore, the tail end of the first handle is rotatably connected with a fixed handle, a first groove is formed in the fixed handle, and the first groove is matched with the tail end of the second handle.
Furthermore, the inner sides of the first handle and the second handle are respectively provided with a first elastic sheet and a second elastic sheet, the first elastic sheet and the second elastic sheet are both arc-shaped, the front end of the second elastic sheet is provided with a hole, the front end of the first elastic sheet is provided with a notch, and the notch of the first elastic sheet is matched with the hole.
Further, a plurality of second grooves are formed in the outer sides of the first handle and the second handle, and the second grooves are arc-shaped.
Further, the number of the triangular teeth is 3-5.
Compared with the prior art, the invention has the beneficial effects that:
1. the first opening head comprises a connecting rod and a lifting rod, the rear part of the lifting rod is sleeved in the connecting rod and is in sliding connection with the connecting rod, and the lifting rod is arranged so that when the opening of the vertebral body is realized, the vertebral body can be lifted. Unnecessary operation in the operation is reduced to a great extent, the operation time is saved, and the operation risk is greatly reduced.
2. According to the structure and the connection mode of the rear part of the lifting rod, the threaded rod and the connecting rod, the lifting rod can slide and limit in the first cavity of the connecting rod, the requirement that the threaded rod rotates and drives the lifting rod to slide back and forth in the connecting rod without rotating is met, and finally the structure can lift the vertebral body.
The concrete aspects are as follows: a. the front end of the connecting rod is provided with a cuboid-shaped first cavity, so that the rear part of the lifting rod can slide in the first cavity, the rear end of the first cavity is a cylindrical second cavity, and the inner wall of the second cavity is provided with threads, so that the movement and the limit of a threaded rod in the second cavity are met; b. the tail end of the lifting rod is provided with a first U-shaped groove and a second U-shaped groove, and the depth of the second U-shaped groove is larger than that of the first U-shaped groove, so that the limiting table is limited in the second U-shaped groove when the threaded rod rotates, and the lifting rod is driven to slide in the first cavity; c. the rear part of the lifting rod is of a cuboid structure, so that the lifting rod only moves axially in the rotating process along with the threaded rod, the stability of the triangular teeth on the lifting rod in the radial direction is ensured, and unnecessary displacement of the vertebral body in the radial direction is avoided (the axial direction and the radial direction are the same as the axial direction and the radial direction of the threaded rod).
3. An included angle of 90-145 degrees is formed between the handle and the spreading head, and an operation space is provided for the threaded rod penetrating in the connecting rod.
4. During the use, will strut the head and strut suitable distance, the position of first handle and second handle can be fixed in the setting of fixed handle, and then fixed two distances of strutting between the head, and then can continue to carry out the operation of drawing of carrying on the centrum. In addition, the second groove is formed in the outer side of the handle, unnecessary loosening in the operation is greatly reduced by the structure, the stability of the vertebral body is higher than that of the traditional operation, the postoperative recovery of a patient can be quicker, the patient can get out of the bed earlier to perform a series of functional exercises, and the rehabilitation of the patient is accelerated and the operation effect is guaranteed.
5. The triangular teeth outside the front end of the distracting head can be firmly clamped on the upper vertebral plate and the lower vertebral plate of the slippage section, so the success rate of reduction is far higher than that of the traditional operation, and the invention has great benefit for the patient after healing.
Drawings
Fig. 1 is a schematic structural view of the lumbar spondylolisthesis repositor of the present invention.
Fig. 2 is a second schematic structural view of the lumbar spondylolisthesis repositor of the present invention.
Fig. 3 is a schematic structural view of the first handle, the first spreader head and the threaded rod of the lumbar spondylolisthesis repositor of the present invention.
Fig. 4 is a schematic structural view of a lifting rod, a connecting rod and a threaded rod of the lumbar spondylolisthesis repositor.
Fig. 5 is a schematic structural view of a lifting rod of the lumbar spondylolisthesis repositor.
Fig. 6 is a sectional view of the lifting rod and the connecting rod of the lumbar spondylolisthesis repositor of the present invention.
Fig. 7 is a schematic structural view of the threaded rod of the lumbar spondylolisthesis repositor of the present invention.
Reference numerals: 1 is first handle, 2 is the second handle, 3 is first prop the beginning, 31 is the connecting rod, 311 is first cavity, 312 is the second cavity, 32 is for carrying the pull rod, 321 is first U-shaped groove, 322 is the second U-shaped groove, 4 props the beginning for the second, 5 is the triangle-shaped tooth, 6 is fixed handle, 61 is first recess, 7 is first shell fragment, 8 is the second shell fragment, 9 is the second recess, 10 is the threaded rod, 101 is spacing platform, 102 smooth section, 103 is the screw thread section, 104 is the knob.
Detailed Description
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
Example 1
As shown in fig. 1 to 7, the lumbar spondylolisthesis repositor comprises a handle and a spreading head, wherein an included angle is formed between the handle and the spreading head, the included angle is 90-145 degrees, specifically, the included angle is 145 degrees in the embodiment, the handle comprises a first handle 1 and a second handle 2, the first handle 1 is hinged to the second handle 2, the tail end of the first handle 1 is rotatably connected with a fixed handle 6, a first groove 61 is formed in the fixed handle 6, and the first groove 61 is matched with the tail end of the second handle 2. The inner sides of the first handle 1 and the second handle 2 are respectively provided with a first elastic sheet 7 and a second elastic sheet 8, the first elastic sheet 7 and the second elastic sheet 8 are both arc-shaped, the front end of the second elastic sheet 8 is provided with a hole, the front end of the first elastic sheet 7 is provided with a notch, and the notch of the first elastic sheet 7 is matched with the hole. A plurality of second grooves 9 are formed in the outer sides of the first handle 1 and the second handle 2, and the second grooves 9 are arc-shaped.
The front ends of the first handle 1 and the second handle 2 are respectively provided with a first support head 3 and a second support head 4, the first support head 3 comprises a connecting rod 31 and a lifting rod 32, the rear part of the lifting rod 32 is sleeved in the connecting rod 31 and is in sliding connection with the connecting rod 31, specifically, the front end of the connecting rod 31 is provided with a cuboid-shaped first cavity 311, the rear end of the first cavity 311 is a cylindrical second cavity 312, and the inner wall of the second cavity 312 is provided with threads; the rear portion of the lifting rod 32 is of a cuboid structure matched with the first cavity 311, the rear portion of the lifting rod 32 is rotatably connected with a threaded rod 10, and the threaded rod 10 is in threaded fit with the second cavity 312 and penetrates out of the second cavity 312. The tail end of the lifting rod 32 is provided with a first U-shaped groove 321, the front end of the first U-shaped groove 321 is a second U-shaped groove 322, and the depth of the second U-shaped groove 322 is greater than that of the first U-shaped groove 321. Threaded rod 10 includes from the past to back fixed connection's spacing platform 101, smooth section 102 and screw thread section 103 in proper order, spacing platform 101 and second U-shaped groove 322 phase-match, smooth section 102 and first U-shaped groove 321 phase-match, the tail end fixedly connected with knob 104 of screw thread section 103.
The front end of the lifting rod 32 and the front end of the second support head 4 are both in a sheet shape, and the outer side surfaces of the two are provided with triangular teeth 5. The number of the triangular teeth 5 is 3-5. Specifically, the number of the triangular teeth 5 in this embodiment is 3. The connecting rod 31 is integrally formed with the first handle 1, and the second switch 4 is integrally formed with the second handle 2.
When the lumbar spondylolisthesis repositor is used, the distraction head of the lumbar spondylolisthesis repositor is firstly inserted into the intervertebral space of the lumbar spondylolisthesis section, the triangular teeth 5 at the front end of the lifting rod 32 are clamped on the vertebral plate of the moving vertebral body, then the handle is held, the distance between the first handle 1 and the second handle 2 is adjusted, the distance between the first distraction head 3 and the second distraction head 4 reaches the width required by the intervertebral space distraction operation, the vertebral body is distracted, at the moment, the tail end of the second handle 2 is positioned in the first groove 61 of the fixed handle 6, the handle is fixed, and the distance between the distraction heads is also fixed; then the knob 104 is screwed, the thread section 103 of the threaded rod 10 is matched with the internal thread of the second cavity 312, so that the thread section 103 moves towards the front end, at the moment, the limiting table 101 rotates in the second U-shaped groove 322, the lifting rod 32 is pushed forwards under the action of the thread section 103, the lifting rod 32 slides out of the first cavity 311 of the connecting rod 31, the shifted vertebral body is lifted and reset, and at the moment, the knob 104 can be stopped being screwed. When the lumbar spondylolisthesis restorer is restored, the knob 104 is screwed in the opposite direction, the limiting table 101 rotates in the second U-shaped groove 322, and the lifting rod 32 is pulled backwards to restore the original position under the action of the thread section 103; the depth of the first U-shaped groove 321 at the tail end of the lifting rod 32 is smaller than that of the second U-shaped groove 322, so that the limiting table 101 can be blocked by the structure at the lower part of the first U-shaped groove 321 when the threaded section 103 rotates and acts backwards, and the lifting rod 32 movably connected with the threaded rod 10 can be driven to move backwards together when the threaded rod rotates.
Example 2
This embodiment is substantially the same as embodiment 1 except that the angle is 90 °, and the number of the triangular teeth 5 is 5.
Example 3
This embodiment is substantially the same as embodiment 1 except that the angle is 120 °, and the number of the triangular teeth 5 is 4.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which are merely illustrative and not restrictive, and it should be understood that other embodiments may be easily implemented by those skilled in the art by means of replacement or modification according to the technical contents disclosed in the specification, and therefore, all changes and modifications that come within the spirit and technical conditions of the present invention should be included in the claims of the present invention.
Claims (5)
1. The lumbar spondylolisthesis repositor is characterized by comprising a handle and a spreading head, wherein an included angle is formed between the handle and the spreading head, the included angle is 90-145 degrees, the handle comprises a first handle (1) and a second handle (2), the first handle (1) is hinged with the second handle (2), the front ends of the first handle (1) and the second handle (2) are respectively provided with a first spreading head (3) and a second spreading head (4), the first spreading head (3) comprises a connecting rod (31) and a lifting rod (32), the rear portion of the lifting rod (32) is sleeved in the connecting rod (31) and is in sliding connection with the connecting rod (31), the front end of the lifting rod (32) and the front end of the second spreading head (4) are both in a sheet shape, and the outer side faces of the two are both provided with triangular teeth (5);
the front end of the connecting rod (31) is provided with a first cavity (311) in a cuboid shape, the rear end of the first cavity (311) is a cylindrical second cavity (312), and the inner wall of the second cavity (312) is provided with threads; the rear part of the lifting rod (32) is of a cuboid structure matched with the first cavity (311), the rear part of the lifting rod (32) is rotatably connected with a threaded rod (10), and the threaded rod (10) is in threaded fit with the second cavity (312) and penetrates out of the second cavity (312);
the tail end of the lifting rod (32) is provided with a first U-shaped groove (321), the front end of the first U-shaped groove (321) is provided with a second U-shaped groove (322), and the depth of the second U-shaped groove (322) is greater than that of the first U-shaped groove (321);
threaded rod (10) are including spacing platform (101), smooth section (102) and screw thread section (103) that set gradually from the past to the back, spacing platform (101) and second U-shaped groove (322) phase-match, smooth section (102) and first U-shaped groove (321) phase-match, the tail end fixedly connected with knob (104) of screw thread section (103).
2. The lumbar spondylolisthesis repositor according to claim 1, characterized in that the tail end of the first handle (1) is rotatably connected with a fixed handle (6), the fixed handle (6) is provided with a first groove (61), and the first groove (61) is matched with the tail end of the second handle (2).
3. The lumbar spondylolisthesis repositor according to claim 1, wherein a first elastic sheet (7) and a second elastic sheet (8) are respectively arranged on the inner sides of the first handle (1) and the second handle (2), the first elastic sheet (7) and the second elastic sheet (8) are both arc-shaped, a notch is arranged at the front end of the first elastic sheet (7), a hole is formed at the front end of the second elastic sheet (8), and the notch of the first elastic sheet (7) is matched with the hole.
4. The repositor for lumbar spondylolisthesis according to claim 1, wherein a plurality of second grooves (9) are formed on the outer sides of the first handle (1) and the second handle (2), and the second grooves (9) are arc-shaped.
5. The repositor for lumbar spondylolisthesis according to claim 1, wherein the number of the triangular teeth (5) is 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811351948.6A CN109498077B (en) | 2018-11-14 | 2018-11-14 | Lumbar spondylolisthesis repositor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811351948.6A CN109498077B (en) | 2018-11-14 | 2018-11-14 | Lumbar spondylolisthesis repositor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109498077A CN109498077A (en) | 2019-03-22 |
| CN109498077B true CN109498077B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811351948.6A Active CN109498077B (en) | 2018-11-14 | 2018-11-14 | Lumbar spondylolisthesis repositor |
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| CN (1) | CN109498077B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0528177A2 (en) * | 1991-08-17 | 1993-02-24 | Aesculap Ag | Internal fixator for the correction of a lumbar spondyldisthesis |
| CN101103935A (en) * | 2007-07-25 | 2008-01-16 | 朱大成 | Orthopedic vertebral body repositioning device |
| CN201299638Y (en) * | 2008-10-29 | 2009-09-02 | 张为 | Depth-adjustable internal fixation system used for reduction of spondylolisthesis |
| CN203369958U (en) * | 2013-06-25 | 2014-01-01 | 龚遂良 | Spine orthopedic reset pliers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8936599B2 (en) * | 2011-11-02 | 2015-01-20 | Tenzin Llc | Translational instrumentation for spondylolisthesis and scoliosis reduction |
-
2018
- 2018-11-14 CN CN201811351948.6A patent/CN109498077B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0528177A2 (en) * | 1991-08-17 | 1993-02-24 | Aesculap Ag | Internal fixator for the correction of a lumbar spondyldisthesis |
| CN101103935A (en) * | 2007-07-25 | 2008-01-16 | 朱大成 | Orthopedic vertebral body repositioning device |
| CN201299638Y (en) * | 2008-10-29 | 2009-09-02 | 张为 | Depth-adjustable internal fixation system used for reduction of spondylolisthesis |
| CN203369958U (en) * | 2013-06-25 | 2014-01-01 | 龚遂良 | Spine orthopedic reset pliers |
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| Publication number | Publication date |
|---|---|
| CN109498077A (en) | 2019-03-22 |
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Inventor after: Shu Kunyao Inventor after: Wang Jue Inventor before: Shu Kunyao Inventor before: Wang Jue Inventor before: Yuan Lianjing Inventor before: Lu Zhixiang Inventor before: Guan Anzhen |
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