CN202920328U - Automatic way-finding type vertebral pedicle heading device - Google Patents
Automatic way-finding type vertebral pedicle heading device Download PDFInfo
- Publication number
- CN202920328U CN202920328U CN 201220533599 CN201220533599U CN202920328U CN 202920328 U CN202920328 U CN 202920328U CN 201220533599 CN201220533599 CN 201220533599 CN 201220533599 U CN201220533599 U CN 201220533599U CN 202920328 U CN202920328 U CN 202920328U
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- China
- Prior art keywords
- open circuit
- heading
- guide part
- self
- rod
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Abstract
An automatic way-finding type vertebral pedicle heading device comprises a guiding barrel. Inner threads are machined on the inner wall of the guiding barrel. A pressurization threaded rod is arranged in the guiding barrel, wherein the pressurization threaded rod and the guiding barrel are coaxial and in threaded connection. A handle is fixedly connected with one end of the pressurization threaded rod. An elastic heading rod is fixedly connected with the other end of the pressurization threaded rod. Outer threads are machined on the outer wall of the elastic heading rod. The elastic heading rod is connected with a self-attacking head. The elastic heading rod adopted by the heading device is good in elasticity. Heading direction of the self-attacking head is adjusted by bending and deformation of the elastic heading rod under the condition of deviation of needle inserting and anatomic variation or when resistance of cortical bones is large, then the self-attacking head is enabled to head to the positions of cancellous bones, automatic way-finding heading of the self-attacking head is achieved, and the self-attacking head is enabled to head in vertebral pedicle smoothly and is prevented from breaking the inner wall and the outer wall of the vertebral pedicle, and damage to spinal cords and nerve roots from the self-attacking head is effectively avoided.
Description
Technical field
This utility model belongs to medical instruments field, relates in particular to a kind of automatic pathfinding formula pediculus arcus vertebrae opening device.
Background technology
At present, existing vertebral arch pedicle of vertebral column internal fixation system is when putting nail, the open circuit bar of the open circuit device that uses is hard inflexibility formula, when inserting needle deviation or various deformity cause variation larger, what be fixedly connected with the open circuit bar is difficult to adjust the open circuit direction from tap holder, easily breaks through lateral wall in pedicle of vertebral arch from tap holder, seriously can cause from tap holder Spinal Cord and nerve root, in addition, from tap holder repeatedly open a way easily cause following closely lax.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of automatic pathfinding formula pediculus arcus vertebrae opening device is provided, it is in inserting needle deviation and anatomical variation situation, can automatically adjust the open circuit direction from tap holder, meet the cortical bone resistance and can change direction from tap holder when larger, make from tap holder to spongy bone place open circuit, guaranteed from tap holder open circuit smoothly in pedicle of vertebral arch, avoided the self tapping head process to break the pedicle of vertebral arch inside and outside wall, effectively prevented from the damage of tap holder to spinal cord and nerve root.
This utility model is to realize like this, a kind of automatic pathfinding formula pediculus arcus vertebrae opening device, comprise guide cylinder, described guide cylinder inwall is processed with female thread, be provided with and the pressurization screw rod that be threaded coaxial with it in described guide cylinder, described pressurization screw rod one end is fixedly connected with one handle, and the described pressurization screw rod other end is fixedly connected with an elasticity open circuit bar, described elasticity open circuit bar outer wall is processed with external screw thread, and described elasticity open circuit bar is fixedly connected with from tap holder with one.
Particularly, described guide cylinder comprises the first guide part and the second guide part that is connected with described the first guide part, the diameter of described the first guide part is greater than the diameter of described the second guide part, described the first guide part is complementary and is threaded with described pressurization screw rod, and described the second guide part is complementary and is threaded with described elasticity open circuit bar.
Particularly, the diameter of described pressurization screw rod is greater than the diameter of described elasticity open circuit bar.
Particularly, described elasticity open circuit bar is made by metallic elastic material or non-metallic elastic material.
Preferably, described is helical structure from tap holder.
Preferably, described handle is T-shaped.
adopt the open circuit bar of hard different from open circuit device of the prior art, open circuit device of the present utility model adopts elasticity open circuit bar, elasticity open circuit bar has good elasticity, but free bend, therefore, elasticity open circuit bar is adjusted open circuit direction from tap holder automatically by its flexural deformation in inserting needle deviation and anatomical variation situation, meet the cortical bone resistance when larger elasticity open circuit bar also can change open circuit direction from tap holder by its flexural deformation, make from tap holder to spongy bone place open circuit, thereby realized the automatic pathfinding formula open circuit from tap holder, guaranteed to open a way smoothly in pedicle of vertebral arch from tap holder, avoided the self tapping head process to break the pedicle of vertebral arch inside and outside wall, can effectively prevent from the damage of tap holder to spinal cord and nerve root, in addition, only need once to open a way from tap holder and get final product, solved the lax problem that causes because repeatedly opening a way from tap holder following closely of the prior art.
Description of drawings
In order to be illustrated more clearly in the technical solution of the utility model, the below will do to introduce simply to the accompanying drawing of required use in embodiment, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of a kind of automatic pathfinding formula pediculus arcus vertebrae opening device that provides of this utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described.
as shown in Figure 1, a kind of automatic pathfinding formula pediculus arcus vertebrae opening device that this utility model embodiment provides, comprise guide cylinder 1, guide cylinder 1 inwall is processed with female thread, be provided with and the pressurization screw rod 2 that be threaded coaxial with it in guide cylinder 1, pressurization screw rod 2 one ends are fixedly connected with a T-shaped handle 3, pressurization screw rod 2 other ends are fixedly connected with an elasticity open circuit bar 4, the diameter of pressurization screw rod 2 is greater than the diameter of elasticity open circuit bar 4, so that pressurization screw rod 2 drives elasticity open circuit bar 4, elasticity open circuit bar 4 is made by metallic elastic material or non-metallic elastic material, elasticity open circuit bar 4 outer walls are processed with external screw thread, elasticity open circuit bar 4 is fixedly connected with from tap holder 5 with one, be helical structure from tap holder 5, help to open a way in pedicle of vertebral arch from tap holder 5.
Particularly, described guide cylinder 1 comprises the first guide part 11 and the second guide part 12 that is connected with the first guide part 11, the diameter of the first guide part 11 is greater than the diameter of the second guide part 12, the first guide part 11 is complementary and is threaded with pressurization screw rod 2, the first guide part 11 is used for pressurization screw rod 2 is led, the second guide part 12 is complementary and is threaded with elasticity open circuit bar 4, and the second guide part 12 is used for elasticity open circuit bar 4 is led.
Automatic pathfinding formula pediculus arcus vertebrae opening device of the present utility model in use, at first grasp handle 3 and rotate, under the driving of handle 3, pressurization screw rod 2 is thereupon in the first interior rotation of guide part 11 of guide cylinder 1 and travel forward, simultaneously, in the second interior rotation of guide part 12 of guide cylinder 1 and travel forward, rotate and travel forward from tap holder 5 by 4 drives of elasticity open circuit bar with dynamic elasticity open circuit bar 4 for pressurization screw rod 2, thereby realize opening a way in the pedicle of vertebral arch of tap holder 5 patient, ready for putting nail.
adopt the open circuit bar of hard different from open circuit device of the prior art, open circuit device of the present utility model adopts elasticity open circuit bar 4, elasticity open circuit bar 4 has good elasticity, but free bend, therefore, elasticity open circuit bar 4 is adjusted open circuit direction from tap holder 5 automatically by its flexural deformation in inserting needle deviation and anatomical variation situation, meet the cortical bone resistance when larger elasticity open circuit bar 4 also can change open circuit direction from tap holder 5 by its flexural deformation, make from tap holder 5 to spongy bone place open circuit, thereby realized the automatic pathfinding formula open circuit from tap holder 5, guaranteed to open a way smoothly in pedicle of vertebral arch from tap holder 5, avoided breaking through the pedicle of vertebral arch inside and outside wall from tap holder 5, can effectively prevent the damage from 5 pairs of spinal cords of tap holder and nerve root, in addition, once open a way from 5 needs of tap holder and get final product, solved the lax problem that causes because repeatedly opening a way from tap holder following closely of the prior art.
The above is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from this utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (6)
1. automatic pathfinding formula pediculus arcus vertebrae opening device, it is characterized in that, comprise guide cylinder, described guide cylinder inwall is processed with female thread, be provided with and the pressurization screw rod that be threaded coaxial with it in described guide cylinder, described pressurization screw rod one end is fixedly connected with one handle, and the described pressurization screw rod other end is fixedly connected with an elasticity open circuit bar, described elasticity open circuit bar outer wall is processed with external screw thread, and described elasticity open circuit bar is fixedly connected with from tap holder with one.
2. automatic pathfinding formula pediculus arcus vertebrae opening device according to claim 1, it is characterized in that, described guide cylinder comprises the first guide part and the second guide part that is connected with described the first guide part, the diameter of described the first guide part is greater than the diameter of described the second guide part, described the first guide part is complementary and is threaded with described pressurization screw rod, and described the second guide part is complementary and is threaded with described elasticity open circuit bar.
3. automatic pathfinding formula pediculus arcus vertebrae opening device according to claim 1 and 2, is characterized in that, the diameter of described pressurization screw rod is greater than the diameter of described elasticity open circuit bar.
4. automatic pathfinding formula pediculus arcus vertebrae opening device according to claim 1, is characterized in that, described elasticity open circuit bar is made by metallic elastic material or non-metallic elastic material.
5. automatic pathfinding formula pediculus arcus vertebrae opening device according to claim 1, is characterized in that, described is helical structure from tap holder.
6. automatic pathfinding formula pediculus arcus vertebrae opening device according to claim 1, is characterized in that, described handle is T-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533599 CN202920328U (en) | 2012-10-18 | 2012-10-18 | Automatic way-finding type vertebral pedicle heading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220533599 CN202920328U (en) | 2012-10-18 | 2012-10-18 | Automatic way-finding type vertebral pedicle heading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202920328U true CN202920328U (en) | 2013-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220533599 Expired - Fee Related CN202920328U (en) | 2012-10-18 | 2012-10-18 | Automatic way-finding type vertebral pedicle heading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202920328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI639410B (en) * | 2017-03-17 | 2018-11-01 | 國立陽明大學 | The pedicle screw system with single plane motion and axial rotation |
-
2012
- 2012-10-18 CN CN 201220533599 patent/CN202920328U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI639410B (en) * | 2017-03-17 | 2018-11-01 | 國立陽明大學 | The pedicle screw system with single plane motion and axial rotation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20151018 |
|
| EXPY | Termination of patent right or utility model |