CN203749560U - Pedicle screw feeding device - Google Patents
Pedicle screw feeding device Download PDFInfo
- Publication number
- CN203749560U CN203749560U CN201320802252.7U CN201320802252U CN203749560U CN 203749560 U CN203749560 U CN 203749560U CN 201320802252 U CN201320802252 U CN 201320802252U CN 203749560 U CN203749560 U CN 203749560U
- Authority
- CN
- China
- Prior art keywords
- pedicle
- screw
- pedicle screw
- nail
- vertebral arch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007943 implant Substances 0.000 claims abstract description 4
- 238000012795 verification Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Abstract
The technical scheme of the utility model provides a pedicle screw feeding device which is conveniently used by a physician to implant a pedicle screw. The pedicle screw feeding device is convenient to operate, safe and reliable to use. The pedicle screw feeding device is characterized in that when the pedicle screw feeding device is used, a connecting head at the head of a screw feeding rod is inserted into the pedicle screw, threads at the head of a screw feeding sleeve are screwed into a tail cap of the pedicle screw by a screwing nut, and after full locking, a retreat prevention knob is forwards pushed until a locking button springs. The screwing nut is provided with clamping teeth and is matched with a clamping groove in the retreat prevention knob during work; the locking button is clamped into a regular octangle which is arranged on the screw feeding rod, the screw feeding device and the pedicle screw are effectively connected into a whole, and the pedicle screw is firm and is not loose without removing the locking force. By means of repeated experimental verification, when the clamping groove of the retreat prevention knob is divided into 16 equal parts with 30 degrees, the screw feeding rod is arranged into the regular octangle, and the pedicle screw can be effectively locked.
Description
Technical field
The present invention relates to a kind of technical field of medical instruments, be specifically related to a kind of pedicle of vertebral arch screw of implanting pedicle screw when spinal lesion is done internal fixation operation that is used for the treatment of and nail on nail device.
Background technology
The application of internal fixation of spine technology has had the history of decades.At present, unstable for spinal trauma, slippage, degenerative disease and other single hops or several sections of fracture postcentrum, adopt spinal column internal fixation device to fix more.Present holder kind is on the market more, but major part all consists of other corresponding components such as unidirectional pedicle screw, Universal pedicle screw, pitmans.
In internal fixation of spine operation, the step of most critical is the implantation of pedicle screw, by clinical experience for many years, finds that one nails on device suitable pedicle of vertebral arch screw and can play vital effect to performing the operation.Doctor is connected with pedicle screw carrying out conventionally first using nail device when pedicle screw is implanted, with a hands determine the direction of pedicle screw, then another hands is screwed into pedicle screw by the handle of upper nail instrument.So a pedicle of vertebral arch screw of holding nails on device must be convenient effectively with being connected of pedicle screw, for pedicle screw can be controlled firmly after implanting, between pedicle screw and upper nail device globality by force, the pedicle screw of non-loosening phenomenon, especially universal type.
In order to allow, internal fixation of spine operation safety carries out smoothly, a lot of medical apparatus and instruments manufacturer and research institution nail on device and all constantly making great efforts for developing a pedicle of vertebral arch screw of holding.(Granted publication number is utility model patent < < centrum-nail fastening device > >: CN 201324288 Y) announced a kind of upper nail device using while implanting applicable to pedicle screw, but this kind of upper nail device in clinical use pedicle screw with on follow closely and easily produce being connected of device looseningly, when pedicle screw is implanted simultaneously, direction has easily changed, has increased the risk of performing the operation.(application publication number is patent of invention < < spinal screw feeder > >: CN 102379738 A) disclose a kind of spinal screw feeder, this kind of upper nail device is because slide block can not radial rotating on con-rod only, so being subject to following closely device head threads in the restriction of angle when engagement, slide block and latch on turncap can not lock completely with being connected of pedicle screw, make to exist between the two loosening, all there is the risk that scratches doctor's glove in art in the latch between handle and turncap and turncap and slide block simultaneously, and the solution that this invention does not provide Universal pedicle screw to implant, especially rocking between Universal pedicle screw screw and tail cap.
Summary of the invention
The object of this invention is to provide a kind of doctor of convenience implants the pedicle of vertebral arch screw that pedicle screw uses and nails on nail device.Above-mentioned upper nail device and pedicle screw is easy to connect, can firmly effectively lock pedicle screw, meets human engineering, through clinic trial, has obtained clinicist's extensive approval in structure.
Above-mentioned pedicle of vertebral arch screw nail on device mainly by upper nail bar, upper nail sleeve pipe, direction sheath, screw nut, anti-back knob, locking is pressed button and is formed.Above-mentioned upper nail club head can be designed to T-shaped or straight type and be applicable to respectively unidirectional pedicle screw and Universal pedicle screw, and afterbody is provided with in the hydraulic quick coupler that is connected with Quick-change handle, art and can chooses on T-shaped handle or straight type handle and follow closely according to doctor's custom.When above-mentioned upper nail sleeve pipe head is provided with the screw thread matching with pedicle screw tail cap thread and is connected with pedicle screw, first upper nail club head union joint being inserted to pedicle screw is then threaded into upper nail sleeve pipe head after pedicle screw tail cap and presses button and upspring being pushed into locking before anti-back knob.When pedicle screw is implanted, doctor holds direction sheath with one and can grasp into nail direction another hands and pedicle screw can be implanted by rotary quick change handle.
It is easy to operate, safe and reliable that above-mentioned pedicle of vertebral arch screw nails on device, while it is characterized in that using, upper nail club head union joint inserted to pedicle screw, then by pressing button and upspring being pushed into locking before anti-back knob after screwing nut upper nail sleeve pipe head being threaded into pedicle screw tail cap and fully locking.The above-mentioned nut that screws is provided with that latch work coordinates with draw-in groove on anti-back knob time, locking is simultaneously pressed button and snapped in set positive 8 sides on upper nail bar, so above follows closely device and pedicle screw and effectively connects as one firm non-loosening under the effect of not removing coupling mechanism force.While anti-back knob draw-in groove being divided into 30 ° of 16 equal portions through experimental verification repeatedly, upper nail bar is made as positive 8 sides and can effectively locks pedicle screw.
Below by accompanying drawing, pedicle of vertebral arch screw of the present invention being nailed on to device is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation that pedicle of vertebral arch screw of the present invention nails on device;
Fig. 2 is that pedicle of vertebral arch screw of the present invention nails on the structural representation of following closely bar on device;
Fig. 3 is that pedicle of vertebral arch screw of the present invention nails on the structural representation of following closely sleeve pipe on device;
Fig. 4 is the structural representation that pedicle of vertebral arch screw of the present invention nails on device direction sheath;
Fig. 5 is that pedicle of vertebral arch screw of the present invention nails on the structural representation that device screws nut;
Fig. 6 is the structural representation that pedicle of vertebral arch screw of the present invention nails on device anti-back knob;
Fig. 7 is the structural representation that pedicle of vertebral arch screw of the present invention nails on device anti-back principle;
Fig. 8 is that pedicle of vertebral arch screw of the present invention nails on device for the schematic diagram of Universal pedicle screw;
Fig. 9 is that pedicle of vertebral arch screw of the present invention nails on device for the schematic diagram of unidirectional pedicle screw.
Pedicle of vertebral arch screw of the present invention nails in device figure:
The specific embodiment:
The 26S Proteasome Structure and Function that by reference to the accompanying drawings pedicle of vertebral arch screw of the present invention is nailed on to device is illustrated.
As shown in drawings, pedicle of vertebral arch screw of the present invention nails on nail device, above-mentioned pedicle of vertebral arch screw nail on device by upper nail bar (1), upper nail sleeve pipe (2), direction sheath (3), screw nut (4), anti-back knob (6), button (5) is pressed in locking, spring (7) forms.Above-mentioned upper nail bar (1) head is provided with the union joint (13), the basis that are connected with pedicle screw and is connected and is designed to respectively T-shaped and straight type with Universal pedicle screw (15) with unidirectional pedicle screw (17), centre be provided with lock press positive 8 sides (8) that button coordinates in use can realize anti-back knob arbitrarily angled directly forward push-tight just can lock pedicle screw, afterbody is provided with can be according to doctor's demand connecting T-shaped Quick-change handle (14) or straight type Quick-change handle (16) in hydraulic quick coupler (9) art.Above-mentioned upper nail sleeve pipe (2) is provided with the screw thread (10) being connected with pedicle screw tail cap.Above-mentionedly screw that nut (4) is provided with latch (11), latch (11) angle is 30 °.Above-mentioned anti-back knob (6) is provided with draw-in groove (12), experimental results show that draw-in groove (12) angle is made as 30 ° of 16 anti-back knob such as timesharing such as grade (6) and arbitrarily can locks pedicle screw during push-tight forward without angle.
Pedicle of vertebral arch screw of the present invention nails on device and is achieved in that
In art, be ready to pedicle screw and supporting pedicle of vertebral arch screw nail on device, the union joint (13) of upper nail bar (1) head inserted while using to pedicle screw, with screw nut (4) by the upper screw thread (10) of upper nail sleeve pipe (2) screw in the locking of pedicle screw tail cap, by anti-back knob (6) forward push-tight to locking, press button (5) and upspring, the hydraulic quick coupler (9) of upper nail bar afterbody connects suitable Quick-change handle.Completed pedicle of vertebral arch screw and nailed on after being connected of device and pedicle screw, with the hand steered direction sheath (3) of living, with another hand-screw, turned Quick-change handle pedicle screw is implanted to preprepared pedicle channel.
The anti-back structural design that pedicle of vertebral arch screw of the present invention nails on device uniqueness has truly locks the function of pedicle screw completely and can avoid scratching in art doctor's glove completely.Any technology contents that utilizes above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, all still belongs in the scope of technical solution of the present invention.
Claims (3)
1. a pedicle of vertebral arch screw nails on nail device, it is characterized in that above-mentioned pedicle of vertebral arch screw nail on device by upper nail bar (1), upper nail sleeve pipe (2), direction sheath (3), screw nut (4), anti-back knob (6), button (5) is pressed in locking, spring (7) forms, when above-mentioned pedicle of vertebral arch screw nails on device locking pedicle screw, first upper nail club head union joint (13) is inserted to pedicle screw and then upper nail sleeve pipe head threads (10) is screwed in after pedicle screw tail cap and to be pushed into locking and to press button (5) and upspring anti-back knob (6) is front.
2. pedicle of vertebral arch screw according to claim 1 nails on nail device, it is characterized in that above-mentioned upper nail bar (1) head union joint (13) is designed to when T-shaped can be for implanting unidirectional pedicle screw (17), can implant Universal pedicle screw (15) while being designed to straight type, upper nail bar (1) tail structure be hydraulic quick coupler, can connecting T-shaped Quick-change handle (14) or straight type Quick-change handle (16).
3. pedicle of vertebral arch screw according to claim 1 nails on nail device, it is characterized in that above-mentionedly screwing that nut (4) is provided with latch (11), latch size is selected 30 °, above-mentioned anti-back knob (6) is provided with 16 equal portions draw-in grooves (12), draw-in groove size is selected 30 °, above-mentioned upper nail bar (1) is provided with positive 8 sides (8), and said structure coordinates can lock pedicle screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802252.7U CN203749560U (en) | 2013-12-05 | 2013-12-05 | Pedicle screw feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802252.7U CN203749560U (en) | 2013-12-05 | 2013-12-05 | Pedicle screw feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203749560U true CN203749560U (en) | 2014-08-06 |
Family
ID=51244869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320802252.7U Expired - Lifetime CN203749560U (en) | 2013-12-05 | 2013-12-05 | Pedicle screw feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203749560U (en) |
-
2013
- 2013-12-05 CN CN201320802252.7U patent/CN203749560U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104688326A (en) | Pedicle screw nailing device | |
| US20230059438A1 (en) | Spine alignment system | |
| WO2016065721A1 (en) | Fusion cage and clamping device thereof | |
| CN203749560U (en) | Pedicle screw feeding device | |
| CN206482649U (en) | A kind of fracture reduction fixing clamp | |
| CN203226891U (en) | General pedicle screw wrench | |
| CN219021482U (en) | Pedicle screw placement instrument and pedicle screw system | |
| CN203263522U (en) | Novel bone needle extractor | |
| CN203662882U (en) | Spinal fracture posterior quantitative external distraction reduction fixation device | |
| CN203852417U (en) | Pedicle screw sleeve | |
| CN202198641U (en) | Tumor holder | |
| CN203662881U (en) | Calcaneus repositor | |
| CN202761431U (en) | Minimally invasive fracture bolt-imbedding machine capable of fixing multiple segments | |
| CN208426196U (en) | A kind of fracture of femoral shaft three-dimensional closed restorer | |
| CN202950718U (en) | Wire clamping tongs for department of orthopedics | |
| CN203107269U (en) | Pedicle screw fixtion anti-returning spanner | |
| CN101703419A (en) | Hollow guiding inward contraction pressurizing bone bolt | |
| CN204072289U (en) | Controlled single arm type exterior fixation bracket | |
| CN208910456U (en) | A kind of confrontation sleeve for spinal operation | |
| CN201949112U (en) | Fixed square block for percutaneous pedicle screw | |
| CN214632298U (en) | Novel spinal pedicle screw | |
| CN205163231U (en) | Universal nail of auto -lock | |
| CN208492267U (en) | Calcaneum bone trabecula locks internal fixation system | |
| CN211094623U (en) | Orthopedics clinical multidirectional tweezers | |
| CN209899714U (en) | Wound orthopedics fixation clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yiqiang Inventor after: Sun Yan Inventor after: Ji Jianfeng Inventor before: Liu Yiqiang Inventor before: Sun Yan |
|
| CB03 | Change of inventor or designer information | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
|
| CX01 | Expiry of patent term |