CN2354512Y - Petalla claw of shape memory alloy - Google Patents
Petalla claw of shape memory alloy Download PDFInfo
- Publication number
- CN2354512Y CN2354512Y CN 97222794 CN97222794U CN2354512Y CN 2354512 Y CN2354512 Y CN 2354512Y CN 97222794 CN97222794 CN 97222794 CN 97222794 U CN97222794 U CN 97222794U CN 2354512 Y CN2354512 Y CN 2354512Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- patella
- claw
- fixed surface
- 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 - Fee Related
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- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The utility model discloses an appliance which is especially used for the bone connection and the fixation of patellae in operations in bone surgery. The utility model uses shape memory alloy sheet materials to make an arched fixed surface whose middle part is provided with an outer bulge, and the outer end of the fixed surface is provided with an outward extending component with a hooked fixed claw. The middle part of the arched fixed surface with the outer bulge of the utility model is provided with space, and the curvature of the arched fixed surface with an outer bulge of the fixed surface can match with or approximately match with the curvature of patellae of human body.
Description
This utility model relates to and is exclusively used in patella synthetism and fixed utensil in a kind of bone surgery.
China's utility model patent 92215554.2 discloses a kind of two-way automatic pressurization nail made from marmem, and this patent is to be planar pressurization nail face by four nail feet and one to constitute.This utensil is to draw back at the cooled pressurization nail of low temperature environment, the nail foot is inserted in the hole that has been drilled in impaired skeleton in concrete the use, utilizes the patient temperature effect that the pressurization nail is restored to the original state, and impaired skeleton is fixed.But because patella itself is thinner, and has certain flexibility, it is stably fixing to adopt this patent to realize; The patella surface skin is very thin in addition, uses this patent fixedly will cause the pressurized screw top of skin of fixed position to rise during patella, makes the patient that discomfort be arranged more; And the hole of being opened owing to the nail foot places on the patella in skeleton healing back, can cause the difficulty of taking out in the pressurization tack operation again.
The purpose of this utility model provides a kind of prior art deficiency that overcomes, be adapted to patella and fix, and secure fixation can be provided, and can simplify implantation surgery and take out the human bones fixer of operation process.
The purpose of this utility model realizes by following measure: adopt the marmem sheet material to make its middle part and have evagination and be arciform stationary plane, the member of overhanging fixed claw with hook is arranged in the outer end of stationary plane.Evagination of the present utility model has a space in the middle of being arciform stationary plane, so that the skeleton at the position that is fixed has more contacting partly with subcutaneous tissue.The curvature that its evagination of the present utility model is arciform stationary plane should match with Human Patella curvature or approximate coincideing.This utility model only need draw back cooled utensil in using, the fixed claw with hook of its outer end is buckled in the outer of patella, promptly finished the fixing of patella, with the patient temperature effect, the extensive original state of patella claw, there is shape closely to combine firmly by its (patella) atom damaged part (fracture site) simultaneously, and realizes fixing effectively; Only needing that also hook-shaped fixed claw is opened the taking-up fixed claw when operation is taken out in fracture site healing back implementation gets final product; Because the curvature of this utility model evagination matches with the curvature of patella, inserting patient's body can the jack-up patient skin when interior, can not cause subject discomfort certainly yet.
Description of drawings: Fig. 1 is a front view of the present utility model, and Fig. 2 is a rearview of the present utility model, and Fig. 3 is a left view of the present utility model, and Fig. 4 is user mode figure of the present utility model.
Below in conjunction with description of drawings
This utility model is to make with marmem sheet material, referring to Fig. 1 and Fig. 2, stationary plane (2) is wherein arranged, centre at stationary plane have living space (1), the skeleton of position has more contacting partly with subcutaneous tissue so that be fixed, overhanging fixed claw with hook (3) is arranged in outer end of the present utility model, from side view of the present utility model, be Fig. 3, as seen (annotate: right side view and left view figure symmetry of the present utility model), it is that an evagination is arciform shape, and the curvature of its curvature and Human Patella matches or approximate coincideing.In the structure that accompanying drawing provides, the fixed claw of upper end is three, the fixed claw of lower end is two, but implements the shape that this utility model is not limited to accompanying drawing, can make the identical or different different shape of fixed claw quantity up and down according to concrete applicable cases in the manufacturing of reality.Earlier this utility model is inserted in the cold medium in use and cool off, then it being drawn back makes hook-shaped fixed claw be buckled in the outer of patella, sew up the back the patient temperature effect under, this utility model recovers original shape, simultaneously to the patella application of force, make it to combine firmly by the shape of patella, and fixing, referring to Fig. 4; After the fracture site healing, only need when implementing to take out operation hook-shaped fixed claw is drawn back once more, make the uncinus of fixed claw deviate to take out this utility model from the patella outer.
Claims (3)
1, a kind of patella claw made from marmem, its feature are made at the new memorial alloy sheet material of described utensil and are had evagination and be the member that there is overhanging fixed claw with hook arciform stationary plane and outer end.
2, require 1 described patella claw according to power, it is characterized in that there is a space stationary plane centre of evagination.
3, require 1 or 2 described patella claw according to power, it is characterized in that its evagination is the curvature of arciform stationary plane and Human Patella curvature matches or approximate coincideing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222794 CN2354512Y (en) | 1997-12-02 | 1997-12-02 | Petalla claw of shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222794 CN2354512Y (en) | 1997-12-02 | 1997-12-02 | Petalla claw of shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2354512Y true CN2354512Y (en) | 1999-12-22 |
Family
ID=33937748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97222794 Expired - Fee Related CN2354512Y (en) | 1997-12-02 | 1997-12-02 | Petalla claw of shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2354512Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102908182A (en) * | 2011-08-03 | 2013-02-06 | 上海交通大学医学院附属第九人民医院 | Nickel-titanium shape memory alloy patellar concentrator |
| CN103932775A (en) * | 2014-05-17 | 2014-07-23 | 赵全明 | Bone fracture plate used for fracture of tail portion of sacrum |
-
1997
- 1997-12-02 CN CN 97222794 patent/CN2354512Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102908182A (en) * | 2011-08-03 | 2013-02-06 | 上海交通大学医学院附属第九人民医院 | Nickel-titanium shape memory alloy patellar concentrator |
| CN102908182B (en) * | 2011-08-03 | 2015-09-30 | 上海交通大学医学院附属第九人民医院 | A kind of Nickel-titanium shape memory alloy patellar concentrator |
| CN103932775A (en) * | 2014-05-17 | 2014-07-23 | 赵全明 | Bone fracture plate used for fracture of tail portion of sacrum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |