CN204446084U - A kind of high-intensity hollow bone screw - Google Patents
A kind of high-intensity hollow bone screw Download PDFInfo
- Publication number
- CN204446084U CN204446084U CN201420725132.6U CN201420725132U CN204446084U CN 204446084 U CN204446084 U CN 204446084U CN 201420725132 U CN201420725132 U CN 201420725132U CN 204446084 U CN204446084 U CN 204446084U
- Authority
- CN
- China
- Prior art keywords
- screw
- hollow
- screw rod
- stage casing
- head
- 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
Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 238000005728 strengthening Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 210000001215 vagina Anatomy 0.000 description 2
- 208000002658 Intra-Articular Fractures Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
A kind of high-intensity hollow bone screw, hollow screw, hollow screw endoporus has reinforcement screw rod, and hollow screw endoporus has female thread, and strengthening screw rod stage casing is external screw thread, and the head strengthening screw rod is hexagon, strengthen screw head and stage casing binding site jagged; Reinforcement screw head and stage casing binding site breach are triangle, and cannulated threaded is linked into an integrated entity by female thread and external screw thread with reinforcement screw rod; The utility model has the advantages that: the peak torque and the fracture torsion angle that substantially increase hollow screw, prevent the appearance of broken nail situation in performing the operation.
Description
Technical field
This utility model relates to medical instruments field, especially relates to a kind of high-intensity hollow bone screw.
Background technology
The fracture of intra-articular fracture and adjacent joints needs to reach anatomical reduction and stable fixing, to obtain and to maintain the exposure para-position of articular surface; In this region, lag screw technique for fixing is main fixing means; The solid screw of usual employing or hollow screw are as lag screw; Because the endoporus of hollow screw can be squeezed into along sclerite fixation guide pin, effectively can prevent the stressed displacement of sclerite, cutting hollow screw can implant by percutaneous, the advantages such as wound is little, amount of bleeding is little, operating time is short; It also has shortcoming simultaneously: due to the existence of endoporus, the rigidity of hollow screw is little, and peak torque and maximum fracture torsion angle are much smaller than solid screw, and in operation when the sclerotin of patient is harder, often twist distortion, thus the effect of impact operation.
Utility model content
In order to solve the problem, the technical solution adopted in the utility model is as follows:
A kind of high-intensity hollow bone screw, comprise hollow screw, described hollow screw endoporus is provided with reinforcement screw rod, and hollow screw endoporus is provided with screw thread, strengthens screw rod stage casing and is provided with external screw thread, turns part as what strengthen screw rod.
The head of described reinforcement screw rod is hexagon, can be connected with operation tool.
Described reinforcement screw head and stage casing binding site are provided with breach.
Described reinforcement screw head and stage casing binding site breach are triangle, can disconnect smoothly, do not affect follow-up operation technique so that hollow screw tightens hexagonal part and screw thread when reaching nominal torque with reinforcement screw rod.
Described cannulated threaded is linked into an integrated entity by screw thread and external screw thread with reinforcement screw rod.
Advantage of the present utility model: process one section of female thread on the endoporus of hollow screw, reinforcement screw rod is screwed in the screw thread of endoporus, when strengthening screw rod and hollow screw is fastened to nominal torque, strengthen screw rod tail automatically to fracture, hollow screw endoporus is filled thus becomes solid screw, and the rigidity of hollow screw significantly improves.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation that this utility model strengthens screw rod.
Fig. 3 is the left view that this utility model strengthens screw rod.
Fig. 4 is assembling schematic diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1,2,3, 4, a kind of high-intensity hollow bone screw, hollow screw 1, hollow screw 1 endoporus be provided with strengthen screw rod 2, be provided with female thread 3 in hollow screw 1, strengthen screw rod 2 stage casing be provided with external screw thread 4, as strengthen screw rod turn part.
The head of described reinforcement screw rod 2 is hexagon, can be connected with operation tool.
Described reinforcement screw rod 2 head and stage casing binding site are provided with breach.
Described reinforcement screw rod 2 head and stage casing binding site breach are triangle, can disconnect smoothly, do not affect follow-up operation technique so that hollow screw 1 tightens hexagonal part and external screw thread 4 when reaching nominal torque with reinforcement screw rod 2.
Described cannulated threaded 1 is linked into an integrated entity by interior spiral shell 3 stricture of vagina and outer spiral shell 4 stricture of vagina with reinforcement screw rod 2.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by this utility model; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (5)
1. a high-intensity hollow bone screw, comprises hollow screw (1), it is characterized in that: be provided with in described hollow screw (1) and strengthen screw rod (2), hollow screw (1) endoporus is provided with female thread (3), strengthens screw rod (2) stage casing and is provided with external screw thread (4).
2. a kind of high-intensity hollow bone screw according to claim 1, is characterized in that: the head of described reinforcement screw rod (2) is hexagon.
3. a kind of high-intensity hollow bone screw according to claim 2, is characterized in that: described reinforcement screw rod (2) head and stage casing binding site are provided with breach.
4. a kind of high-intensity hollow bone screw according to claim 3, is characterized in that: described reinforcement screw rod (2) head and stage casing binding site breach are triangle.
5. a kind of high-intensity hollow bone screw according to claim 1 or 4, is characterized in that: described cannulated threaded (1) is linked into an integrated entity by female thread (3) and external screw thread (4) with reinforcement screw rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725132.6U CN204446084U (en) | 2014-11-28 | 2014-11-28 | A kind of high-intensity hollow bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725132.6U CN204446084U (en) | 2014-11-28 | 2014-11-28 | A kind of high-intensity hollow bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204446084U true CN204446084U (en) | 2015-07-08 |
Family
ID=53653039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725132.6U Expired - Fee Related CN204446084U (en) | 2014-11-28 | 2014-11-28 | A kind of high-intensity hollow bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204446084U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104434289A (en) * | 2014-11-28 | 2015-03-25 | 贝尔泰克医疗器械江苏有限公司 | High-strength hollow bone screw |
| CN108056798A (en) * | 2016-11-08 | 2018-05-22 | 吕怡然 | Stent pushing system and corresponding blood flow guider and blood flow guider assembly method |
-
2014
- 2014-11-28 CN CN201420725132.6U patent/CN204446084U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104434289A (en) * | 2014-11-28 | 2015-03-25 | 贝尔泰克医疗器械江苏有限公司 | High-strength hollow bone screw |
| CN108056798A (en) * | 2016-11-08 | 2018-05-22 | 吕怡然 | Stent pushing system and corresponding blood flow guider and blood flow guider assembly method |
| CN108056798B (en) * | 2016-11-08 | 2021-06-04 | 艾柯医疗器械(北京)有限公司 | Support pushing system, corresponding blood flow guiding device and blood flow guiding device assembling method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |