CN110652352A - Minimally invasive percutaneous screw vertebral body distractor - Google Patents
Minimally invasive percutaneous screw vertebral body distractor Download PDFInfo
- Publication number
- CN110652352A CN110652352A CN201910954928.6A CN201910954928A CN110652352A CN 110652352 A CN110652352 A CN 110652352A CN 201910954928 A CN201910954928 A CN 201910954928A CN 110652352 A CN110652352 A CN 110652352A
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- percutaneous screw
- screw
- adjusting rod
- percutaneous
- spreader
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- 238000009434 installation Methods 0.000 claims abstract description 18
- 208000010392 Bone Fractures Diseases 0.000 description 5
- 206010017076 Fracture Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000011295 pitch Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 206010010214 Compression fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7014—Longitudinal elements, e.g. rods with means for adjusting the distance between two screws or hooks
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical equipment, and aims to provide a minimally invasive percutaneous screw centrum spreader which can effectively solve the problem that the existing percutaneous screw is inconvenient to spread, and the minimally invasive percutaneous screw centrum spreader comprises a percutaneous screw and a spreader body, wherein the bottom end of the spreader body is provided with an installation clamping seat matched with the percutaneous screw, the top end of the installation clamping seat is connected with an installation seat through a support frame, a bottom adjusting rod penetrates through the installation seat, the top end of the installation seat is fixedly provided with a handle, and a top adjusting rod penetrates through the handle, and the minimally invasive percutaneous screw centrum spreader has the advantages that: through will strut ware body cover on percutaneous screw, can be safe strut percutaneous screw to screw up percutaneous screw through T shape spanner, the effectual fastening nature of having guaranteed percutaneous screw, reset for strutting of fracture provides the guarantee, adjust the pole simultaneously through bottom regulation pole and top regulation pole simultaneously, can effectually guarantee that percutaneous screw can not appear the skew when strutting, easy operation, safe and reliable.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a minimally invasive percutaneous screw vertebral body distractor.
Background
With the development of minimally invasive spinal techniques, the application of percutaneous pedicle screw techniques has become more extensive, and percutaneous screws can reduce the trauma of surgery for patients with lumbar compression fracture. However, the distraction reduction of the fracture is often difficult, the distraction force of the body surface is limited and difficult to keep balance, so that the reduction effect is not good, and a minimally invasive percutaneous screw vertebral body distracter which is convenient to distract, safe and efficient is required to be designed to achieve the aims of vertebral body distraction and fracture reduction.
Disclosure of Invention
The minimally invasive percutaneous screw vertebral body spreader aims to solve the technical problem that the existing percutaneous screw is inconvenient to spread, the spreader body is sleeved on the percutaneous screw, the percutaneous screw can be safely spread under the condition of ensuring the stability of the percutaneous screw, the percutaneous screw can be screwed up through a T-shaped wrench after the percutaneous screw is spread, the tightness of the percutaneous screw is effectively ensured, the spreading reset of fracture is guaranteed, meanwhile, the percutaneous screw can be effectively prevented from deviating during spreading through simultaneous adjustment of a bottom adjusting rod and a top adjusting rod, and the minimally invasive percutaneous screw vertebral body spreader is simple to operate, safe and reliable.
In order to achieve the purpose, the invention adopts the technical scheme that:
a minimally invasive percutaneous screw vertebral body distracter, which comprises a percutaneous screw 3 and a distracter body,
the spreader body mainly comprises a left spreader and a right spreader which have the same structure, and the left spreader and the right spreader are connected with each other through a bottom adjusting rod 6 and a top adjusting rod 7;
the bottom of the spreader body is provided with two installation clamping seats 4 matched with the percutaneous screws 3, the top ends of the installation clamping seats 4 are connected with the installation seat 2 through the support frame 5, the installation seat 2 is provided with a bottom adjusting rod 6 in a penetrating mode, the top end of the installation seat is fixedly provided with a handle 1, and the handle 1 is provided with a top adjusting rod 7 in a penetrating mode.
Furthermore, the bottom adjusting rod 6 and the top adjusting rod 7 have the same thread pitch, and are in threaded connection with a plurality of adjusting nuts.
Furthermore, the support frame 5 and the handle 1 are both Z-shaped structures, and the included angle between the middle connecting rod and the connecting rods at the two ends is 90 degrees.
Furthermore, a through hole matched with the tail part of the percutaneous screw 3 is reserved in the middle of the mounting seat 2 and used for inserting a T-shaped wrench.
The invention has the beneficial effects that: through will strut ware body cover on percutaneous screw, can be under the stable circumstances of assurance percutaneous screw safely strut percutaneous screw, can also screw up percutaneous screw through T shape spanner after percutaneous screw struts, the effectual fastening nature of having guaranteed percutaneous screw, reset for strutting of fracture and provide the guarantee, adjust the pole simultaneously through bottom regulation pole and top regulation pole simultaneously, can effectually guarantee that percutaneous screw can not appear the skew when strutting, the operation is simple, safety and reliability.
Drawings
Fig. 1 is a schematic structural front view of an embodiment of the present invention.
Fig. 2 is a schematic side view of the structure of an embodiment of the present invention.
Fig. 3 is a back schematic view of a structure according to an embodiment of the present invention.
Fig. 4 is a bottom schematic view of a structure of an embodiment of the present invention.
Figure number and name: handle 1, mount pad 2, percutaneous screw 3, installation cassette 4, support frame 5, bottom adjust pole 6, top adjust pole 7, spanner 8.
Detailed Description
The invention will be described in detail with reference to the drawings and specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1-4, the minimally invasive percutaneous screw vertebral body distracter comprises a percutaneous screw 3 and a distracter body, wherein the distracter body mainly comprises a left distracter and a right distracter which have the same structure, and the left distracter and the right distracter are connected with each other through a bottom adjusting rod 6 and a top adjusting rod 7; the bottom of the spreader body is provided with two installation clamping seats 4 matched with the percutaneous screws 3, the top ends of the installation clamping seats 4 are connected with the installation seat 2 through the support frame 5, the installation seat 2 is provided with a bottom adjusting rod 6 in a penetrating mode, the top end of the installation seat is fixedly provided with a handle 1, and the handle 1 is provided with a top adjusting rod 7 in a penetrating mode.
The screw pitch of adjusting pole 6 is the same with top regulation pole 7 in the bottom, and equal threaded connection has a plurality of adjusting nut on it, adjusting nut all adjusts through spanner 8, and spanner 8's both ends all are provided with the bayonet socket, and the both ends bayonet socket respectively with the adjusting nut phase-match that corresponds on pole 6 is adjusted to the bottom and the top is adjusted pole 7, adjusting nut's number in this embodiment is 6, and thickness is the same, for adjusting conveniently, adjusting nut's number can increase to 8, 8 adjusting nut is used for respectively strutting the ware and the right side is propped open the fixed of ware both sides to a left side.
The middle position of the mounting seat 2 is provided with a through hole matched with the tail of the percutaneous screw 3, and the through hole is used for inserting and fastening the T-shaped wrench, the T-shaped wrench is matched with the hexagonal groove inside the tail end of the percutaneous screw 3, the support frame 5 adopts a right-angled Z-shaped structure, the tail of the percutaneous screw 3 can be effectively inserted into the T-shaped wrench, and then the phenomenon of thread slipping in the T-shaped wrench rotating process can be prevented, and the smooth operation is ensured.
When the percutaneous screw expander is used, the two mounting clamping seats 4 at the bottom end of the expander body are sleeved on the percutaneous screw 3, then the adjusting nuts on the bottom adjusting rod 6 and the top adjusting rod 7 are adjusted through the wrench 8, the thread pitches of the bottom adjusting rod 6 and the top adjusting rod 7 are the same, so that the adjusting distances of the bottom adjusting rod 6 and the top adjusting rod 7 are consistent when the adjusting nuts are rotated, and further, medical workers can control the distance between the two mounting clamping seats 4 at the bottom and the percutaneous screw 3 through the adjusting nuts, when the percutaneous screw expander is actually used, the positions of the two adjusting nuts, close to the left expander and the right expander, on the bottom adjusting rod 6 need to be less than the positions of the two adjusting nuts, close to the left expander and the right expander, on the top adjusting rod 7, the two handles 1 can be expanded through tension when approaching to the middle, and then the adjusting nuts are rotated through the wrench 8 to expand the distance between the bottom adjusting rod 6 and the top adjusting rod 7 From fixing, perhaps can adopt and twist simultaneously and move the adjusting nut on bottom regulation pole 6 and the top regulation pole 7 and realize the work of strutting of percutaneous screw 3, the handle plays the effect of providing support and keep balance this moment, and it is worth noting, takes place the skew and reduce patient's uncomfortable for avoiding percutaneous screw 3, should use many times of short distance removal as far as possible to realize strutting the purpose of percutaneous screw 3.
According to the invention, the spreader body is sleeved on the percutaneous screw 3, so that the percutaneous screw 3 can be safely spread under the condition of ensuring the stability of the percutaneous screw 3, the percutaneous screw 3 can be screwed up through the T-shaped wrench after the percutaneous screw 3 is spread, the tightness of the percutaneous screw 3 is effectively ensured, the spreading and resetting of fracture are ensured, and meanwhile, the bottom adjusting rod 6 and the top adjusting rod 7 are used for adjusting simultaneously, so that the percutaneous screw 3 can be effectively ensured not to deviate when being spread, and the operation is simple, safe and reliable.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.
The techniques not described in detail in the present invention are all known techniques.
Claims (4)
1. The utility model provides a wicresoft's percutaneous screw centrum struts ware, includes percutaneous screw (3) and struts ware body, its characterized in that:
the spreader body mainly comprises a left spreader and a right spreader which have the same structure, and the left spreader and the right spreader are connected with each other through a bottom adjusting rod (6) and a top adjusting rod (7);
the bottom of the spreader body is provided with two installation clamping seats (4) matched with the percutaneous screws (3), the top ends of the installation clamping seats (4) are connected with the mounting seat (2) through a supporting frame (5), a bottom adjusting rod (6) penetrates through the mounting seat (2), the top end of the mounting seat is fixedly provided with a handle (1), and a top adjusting rod (7) penetrates through the handle (1).
2. The minimally invasive percutaneous screw vertebral body distractor of claim 1, wherein: the bottom adjusting rod (6) and the top adjusting rod (7) are the same in thread pitch, and a plurality of adjusting nuts are in threaded connection with the bottom adjusting rod and the top adjusting rod.
3. The minimally invasive percutaneous screw vertebral body distractor of claim 1, wherein: the support frame (5) and the handle (1) are both Z-shaped structures, and the included angle between the middle connecting rod and the connecting rods at the two ends is 90 degrees.
4. The minimally invasive percutaneous screw vertebral body distractor of claim 1, wherein: and a through hole matched with the tail part of the percutaneous screw (3) is reserved in the middle of the mounting seat (2) and used for inserting a T-shaped wrench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910954928.6A CN110652352A (en) | 2019-10-09 | 2019-10-09 | Minimally invasive percutaneous screw vertebral body distractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910954928.6A CN110652352A (en) | 2019-10-09 | 2019-10-09 | Minimally invasive percutaneous screw vertebral body distractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110652352A true CN110652352A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910954928.6A Pending CN110652352A (en) | 2019-10-09 | 2019-10-09 | Minimally invasive percutaneous screw vertebral body distractor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111700657A (en) * | 2020-07-16 | 2020-09-25 | 四川大学华西医院 | Centrum struts and shows device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743216A (en) * | 2012-06-26 | 2012-10-24 | 冯其金 | External thoracolumbar vertebra distraction repositor |
| CN105361934A (en) * | 2015-12-08 | 2016-03-02 | 邵阳市中医医院 | Thoracolumbar spine compression fracture percutaneous minimally invasive distraction reduction device |
| CN105559869A (en) * | 2016-02-06 | 2016-05-11 | 贺新宁 | Commonly-used percutaneous pedicle screw stick internal fixing system |
| CN108420473A (en) * | 2018-02-12 | 2018-08-21 | 中南大学湘雅医院 | A kind of dilator for the implantation of intervertebral implants |
-
2019
- 2019-10-09 CN CN201910954928.6A patent/CN110652352A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743216A (en) * | 2012-06-26 | 2012-10-24 | 冯其金 | External thoracolumbar vertebra distraction repositor |
| CN105361934A (en) * | 2015-12-08 | 2016-03-02 | 邵阳市中医医院 | Thoracolumbar spine compression fracture percutaneous minimally invasive distraction reduction device |
| CN105559869A (en) * | 2016-02-06 | 2016-05-11 | 贺新宁 | Commonly-used percutaneous pedicle screw stick internal fixing system |
| CN108420473A (en) * | 2018-02-12 | 2018-08-21 | 中南大学湘雅医院 | A kind of dilator for the implantation of intervertebral implants |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111700657A (en) * | 2020-07-16 | 2020-09-25 | 四川大学华西医院 | Centrum struts and shows device |
| CN111700657B (en) * | 2020-07-16 | 2022-03-08 | 四川大学华西医院 | Centrum struts and shows device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200107 |