CN201353195Y - Degradable pressurization bone screw - Google Patents
Degradable pressurization bone screw Download PDFInfo
- Publication number
- CN201353195Y CN201353195Y CNU2009200379455U CN200920037945U CN201353195Y CN 201353195 Y CN201353195 Y CN 201353195Y CN U2009200379455 U CNU2009200379455 U CN U2009200379455U CN 200920037945 U CN200920037945 U CN 200920037945U CN 201353195 Y CN201353195 Y CN 201353195Y
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- Prior art keywords
- screw
- section
- bone
- degradable
- shank
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- Expired - Fee Related
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Abstract
The utility model relates to a degradable pressurization bone screw, which is provided with a screw shank, wherein the screw shank is a three-section body which is made of metal magnesium and alloy thereof, the three-section body is provided with a front screw section, a middle round bar section and a rear screw section which are connected in turn, wherein the front screw section and the rear screw section are provided with outer screw threads, the middle round bar section is a round bar without an external screw thread, and the thread pitch D of the front screw section is bigger than the thread pitch d of the rear screw section. The bone screw of the utility model is made of the metal magnesium and the alloy thereof, has the degradable characteristic, can avoid taking out again through operations and stress shielding effect, reduces the operation hurt, and lowers the possibility of osteonecrosis and other complications, the screw shank has two screw threads with different thread pitches, can effectively play the tensing and pressurizing roles, is beneficial for inducing bones to grow between bone blocks, can stabilize the bone fracture ends, and prompts bone fracture healing. A moulding surface counter bore is arranged on the end surface of the rear screw section, adapting appliances can be conveniently used to screw the bone screw into the bone, and the bone screw has convenient operation and rational design.
Description
Technical field
This utility model relates to the clinical therapeutic device of a kind of orthopaedics, particularly a kind of degradable pressurization bone screw that is used for the treatment of fracture.
Background technology
Because the principal stress trajectory line of bone interrupts, the opposing and the bearing function of bone are destroyed during fracture.Adopt the purpose of mechanical fixation technology to replace discontinued fracture power structure with fixed structure exactly.It is by adding blade plate and be fixed on the fracture line two ends with bone screw at fracture site, or directly relies on bone screw that knochenbruch is located, and by bone interblock pressure inducement osteogenesis, and makes bone stump be stablized, impel union of fracture.The bone screw of available technology adopting generally all is to be made by metal material, and its maximum shortcoming must be performed the operation once more exactly and be taken out and stress-shielding effect, has increased operation wound, has strengthened the possibility of head necrosis and other complication; In addition, because bone screw mostly is made up of screw cap and shank of screw in the prior art, it is fastening to be to rely on external screw thread on the shank of screw and the pulling force between the screw cap to realize, if but when directly relying on bone screw to connect, above-mentioned bone screw just can only play fixation, and can't realize the effect with two planes of disruption tension pressurization of knochenbruch.
The utility model content
The purpose of this utility model is to provide a kind of second operation that need not to take out fixed apparatus, can play the bone screw of tension pressurization.
The technical scheme that realizes this utility model purpose is: this utility model comprises a kind of degradable pressurization bone screw, has shank of screw; Described shank of screw is three segment bodies of being made by magnesium metal and alloy thereof, this three segment body has the front screw section that connects successively, middle round rod segment and back spiro rod section, front screw section and back spiro rod section all have external screw thread, middle round rod segment is the round bar of no external connection screw, and the pitch D of described front screw section is greater than the pitch d of back spiro rod section.
The bar footpath of the front screw section of above-mentioned degradable pressurization bone screw is identical with the bar footpath of middle round rod segment, and less than the bar footpath of back spiro rod section, the junction of back spiro rod section and middle round rod segment has chamfering.
The back spiro rod section end face of above-mentioned degradable pressurization bone screw is provided with the profile counterbore.
Profile counterbore on the back spiro rod section end face of above-mentioned degradable pressurization bone screw is quincunx counterbore.
The utlity model has following characteristics: (1) bone screw of the present utility model adopts magnesium metal and alloy thereof to make, have degradable characteristics, avoid operation once more to take out and stress-shielding effect, reduced operation wound, reduced the possibility of head necrosis and other complication; (2) shank of screw of the present utility model has two screw threads of different pitch, can effectively play the tension pressurization, helps bone interblock induction of bone growth, and bone stump is stablized, and impels union of fracture; (3) back spiro rod section end face of the present utility model is provided with the profile counterbore, can easily use supporting apparatus that bone screw is screwed in the bone, and is easy to operate, reasonable in design.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, this utility model is described in further detail, wherein
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1.
The specific embodiment
See Fig. 1 and Fig. 2, the utlity model has shank of screw; Described shank of screw is three segment bodies of being made by magnesium metal with degradable characteristic and alloy thereof, this three segment body has front screw section 1, middle round rod segment 2 and the back spiro rod section 3 that connects successively, front screw section 1 and back spiro rod section 3 all have external screw thread, middle round rod segment 2 is the round bar of no external connection screw, and the pitch D of described front screw section 1 is greater than the pitch d of back spiro rod section 3; The bar of front screw section 1 footpath is identical with the bar footpath of middle round rod segment 2, and less than the bar footpath of back spiro rod section 3, the junction of back spiro rod section 3 and middle round rod segment 2 has chamfering; Back spiro rod section 3 end faces are provided with profile counterbore 31, and profile counterbore 31 is quincunx counterbore.
Obviously, the foregoing description of the present utility model only is for this utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here need not also can't give all embodiments exhaustive, and these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.
Claims (4)
1, a kind of degradable pressurization bone screw has shank of screw; It is characterized in that: described shank of screw is three segment bodies of being made by magnesium metal and alloy thereof, this three segment body has front screw section (1), middle round rod segment (2) and the back spiro rod section (3) that connects successively, front screw section (1) and back spiro rod section (3) all have external screw thread, middle round rod segment (2) is the round bar of no external connection screw, and the pitch D of described front screw section (1) is greater than the pitch d of back spiro rod section (3).
2, degradable pressurization bone screw according to claim 1, it is characterized in that: the bar footpath of described front screw section (1) is identical with the bar footpath of middle round rod segment (2), and less than the bar footpath of back spiro rod section (3), the junction of back spiro rod section (3) and middle round rod segment (2) has chamfering.
3, degradable pressurization bone screw according to claim 2, it is characterized in that: described back spiro rod section (3) end face is provided with profile counterbore (31).
4, degradable pressurization bone screw according to claim 3, it is characterized in that: the profile counterbore (31) on spiro rod section (3) end face of described back is quincunx counterbore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200379455U CN201353195Y (en) | 2009-01-14 | 2009-01-14 | Degradable pressurization bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200379455U CN201353195Y (en) | 2009-01-14 | 2009-01-14 | Degradable pressurization bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353195Y true CN201353195Y (en) | 2009-12-02 |
Family
ID=41409536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200379455U Expired - Fee Related CN201353195Y (en) | 2009-01-14 | 2009-01-14 | Degradable pressurization bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353195Y (en) |
Cited By (6)
| 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 |
| CN103919633A (en) * | 2014-04-17 | 2014-07-16 | 泰州市中兴医械科技有限公司 | Combined type spine minimally invasive fusion device |
| CN104257423A (en) * | 2014-08-21 | 2015-01-07 | 赵德伟 | Pure magnesium bolt with degradable front-arranged threads |
| CN106880396A (en) * | 2015-12-15 | 2017-06-23 | 上海交通大学 | A kind of Fracture internal fixaiion screw of degradable absorption |
| CN111407387A (en) * | 2020-03-10 | 2020-07-14 | 昶盛(物料应用制品)有限公司 | Screw assembly for bone fixation and bone fixation device |
| CN112367937A (en) * | 2018-06-29 | 2021-02-12 | 先锋外科技术公司 | Bone plating system |
-
2009
- 2009-01-14 CN CNU2009200379455U patent/CN201353195Y/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| CN103919633A (en) * | 2014-04-17 | 2014-07-16 | 泰州市中兴医械科技有限公司 | Combined type spine minimally invasive fusion device |
| CN104257423A (en) * | 2014-08-21 | 2015-01-07 | 赵德伟 | Pure magnesium bolt with degradable front-arranged threads |
| CN106880396A (en) * | 2015-12-15 | 2017-06-23 | 上海交通大学 | A kind of Fracture internal fixaiion screw of degradable absorption |
| CN112367937A (en) * | 2018-06-29 | 2021-02-12 | 先锋外科技术公司 | Bone plating system |
| CN111407387A (en) * | 2020-03-10 | 2020-07-14 | 昶盛(物料应用制品)有限公司 | Screw assembly for bone fixation and bone fixation device |
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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: TRAUSON MEDICAL INSTRUMENT (CHINA) CO., LTD. Free format text: FORMER NAME: TRAUSON MEDICAL INSTRUMENT (JIANGSU) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 213163 Renmin West Road, Niu Tong Town, Wujin District, Jiangsu, Changzhou Patentee after: Trauson Medical Instrument (China) Company Limited Address before: 213163 Renmin West Road, Niu Tong Town, Wujin District, Jiangsu, Changzhou Patentee before: Trauson Medical Instrument (Jiangsu) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20180114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |