CN202554091U - Absorbable fracture internal fixation screw - Google Patents
Absorbable fracture internal fixation screw Download PDFInfo
- Publication number
- CN202554091U CN202554091U CN2012202260372U CN201220226037U CN202554091U CN 202554091 U CN202554091 U CN 202554091U CN 2012202260372 U CN2012202260372 U CN 2012202260372U CN 201220226037 U CN201220226037 U CN 201220226037U CN 202554091 U CN202554091 U CN 202554091U
- Authority
- CN
- China
- Prior art keywords
- screw
- nail portion
- internal fixation
- screw thread
- thread
- 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
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Abstract
The utility model relates to an absorbable fracture internal fixation screw which comprises a screw body which is made of absorbable materials. The screw body comprises a cylindrical screw part and a tail part placed at the tail end of the screw part. A thread which is placed at the front end of the nail part is arranged on the outer surface of the thread part. The rest outer surface of the thread part is a smooth cylindrical surface. And the length of the thread is 30-80% of the full-length of the screw body. The absorbable fracture internal fixation screw is suitable for bonding and fixing of bones.
Description
Technical field
This utility model relates to a kind of combination and fixed adsorbable bone folding internal fixation screw that is used for bone.
Background technology
The structure of present employed adsorbable bone folding internal fixation screw comprises the screw body of being made by absorbable material, and screw body is made up of with the afterbody that is positioned at nail portion tail end columniform nail portion, and the outer surface of nail portion is provided with elongated screw thread.During use, use the specific purpose tool match with tail structure to tighten screw, realize the combination of bone and fix through the screw thread of nail portion outer surface.Its shortcoming is: slighter fracture only need just can realize combining and fixing by short screw thread usually; Though long screw thread can further be realized the combination of bone and fix; But unnecessary screw thread is screwed on the bone that does not have fracture, can cause certain damage to this part bone inevitably.
The utility model content
This utility model technical problem to be solved is: a kind of adsorbable bone folding internal fixation screw that can not cause damage to the bone that does not have fracture is provided.
For addressing the above problem; The technical scheme that this utility model adopts is: adsorbable bone folding internal fixation screw, comprise the screw body of making by absorbable material, and screw body is made up of with the afterbody that is positioned at nail portion tail end columniform nail portion; The outer surface of nail portion is provided with screw thread; Said screw thread is positioned at the front end of nail portion, and all the other outer surfaces of nail portion are the slick face of cylinder, and the length of screw thread is 30～80% of screw body total length.
The external diameter of said screw thread and the difference of internal diameter are 25～35% of nail portion diameter.
The beneficial effect of this utility model is: above-mentioned adsorbable bone folding internal fixation screw, and it improves on present employed adsorbable bone folding internal fixation screw a little, and when using slighter fracture, it can not cause damage to the bone that does not have fracture.
Description of drawings
Fig. 1 is the structural representation of this utility model;
Among the figure: 1, screw body, 11, nail portion, 111, screw thread, 12, afterbody, the length of a, screw thread, b, screw body total length, c, external diameter, d, internal diameter, e, nail portion diameter.
The specific embodiment
Through specific embodiment this utility model adsorbable bone folding internal fixation screw is done further to describe in detail below.
As shown in Figure 1; Adsorbable bone folding internal fixation screw comprises the screw body of being made by absorbable material 1, and screw body 1 is made up of with the afterbody 12 that is positioned at nail portion 11 tail ends columniform nail portion 11; The outer surface of nail portion 11 is provided with screw thread 111; Said screw thread 111 is positioned at the front end of nail portion 11, and all the other outer surfaces of nail portion 11 are the slick face of cylinder, and the length a of screw thread is 30～80% of screw body total length b.
As preferred version, the external diameter c of said screw thread 111 and the difference of inner diameter d are 25～35% of the diameter e of nail portion.Make this screw thread 111 can more reliably must realize the combination of bone and fixing.
Above-mentioned adsorbable bone folding internal fixation screw in use; Use the specific purpose tool that matches with afterbody 12 structures to tighten screw body 1; Screw thread 111 through its nail portion 11 front ends is realized the combination of bones and fixing; And after screw thread 111 was realized the combination of bone and fixed, damage can not caused to the bone that does not have fracture in the slick face of cylinder of nail portion 11.
The above embodiments are the principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used to limit this utility model; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from this utility model creation design, can also make some distortion and improvement, these all belong to the protection domain of this utility model.
Claims (2)
1. adsorbable bone is rolled over internal fixation screw; Comprise the screw body of making by absorbable material; Screw body is made up of with the afterbody that is positioned at nail portion tail end columniform nail portion, and the outer surface of nail portion is provided with screw thread, it is characterized in that: said screw thread is positioned at the front end of nail portion; All the other outer surfaces of nail portion are the slick face of cylinder, and the length of screw thread is 30～80% of screw body total length.
2. adsorbable bone folding internal fixation screw according to claim 1, it is characterized in that: the external diameter of said screw thread and the difference of internal diameter are 25～35% of nail portion diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202260372U CN202554091U (en) | 2012-05-19 | 2012-05-19 | Absorbable fracture internal fixation screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202260372U CN202554091U (en) | 2012-05-19 | 2012-05-19 | Absorbable fracture internal fixation screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202554091U true CN202554091U (en) | 2012-11-28 |
Family
ID=47203801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202260372U Expired - Lifetime CN202554091U (en) | 2012-05-19 | 2012-05-19 | Absorbable fracture internal fixation screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202554091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102697550A (en) * | 2012-05-19 | 2012-10-03 | 江苏百得医疗器械有限公司 | Absorbable internal fixation screw for fractures |
-
2012
- 2012-05-19 CN CN2012202260372U patent/CN202554091U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102697550A (en) * | 2012-05-19 | 2012-10-03 | 江苏百得医疗器械有限公司 | Absorbable internal fixation screw for fractures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU BAIYIDE MEDICAL INSTRUMENT CO., LTD. Free format text: FORMER NAME: JIANGSU BAIDE MEDICAL INSTRUMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu province 215600 Zhangjiagang City Donglai Town East Highway seven South of Jiangsu 100 medical technology Co. Ltd. Patentee after: The Jiangsu hundred medical science and technology company limited that is easy to get Address before: Suzhou City, Jiangsu Province, Zhangjiagang City, Jiangsu province 215600 Donglai Town East seven road on the south side of Black & Decker Medical Equipment Co. Patentee before: Jiangsu Baide Medical Instrument Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |
|
| CX01 | Expiry of patent term |