CN2912548Y - Locked bone fracture screw - Google Patents
Locked bone fracture screw Download PDFInfo
- Publication number
- CN2912548Y CN2912548Y CN 200620071294 CN200620071294U CN2912548Y CN 2912548 Y CN2912548 Y CN 2912548Y CN 200620071294 CN200620071294 CN 200620071294 CN 200620071294 U CN200620071294 U CN 200620071294U CN 2912548 Y CN2912548 Y CN 2912548Y
- Authority
- CN
- China
- Prior art keywords
- bone
- nail
- thread
- screw
- locked
- 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
Links
Images
Abstract
The utility model of the locked bone screw relates to a fixing screw, which is suitable for human fractures. The utility model belongs to medical apparatuses. The bone screw comprises a nail shank, and a locked screw head. Bone screw threads are arranged on the nail shank. A self tapping cutting head is arranged at the front of the nail shank, so the nail shank can do the self cutting easily and be fixed on the bone. The self cutting head has 1-4 edges. The locked nail heads are designed as coniform multiple screw threads or columniform multiple screw threads. The multiple screw thread has 2-3 ends. The diameter ratio of the coniform multiple screw thread or the columniform multiple screw thread at the head of the locked nail and the nail shank is 1:1.1-2. A hexagonal inner hole or a crisscross slot is arranged at the head of the locked nail, so the hexagonal spanner or screwdriver can cut in and fasten the locked bone nail.
Description
Technical field
What this utility model locking bone screw related to is a kind of human fracture's of being applicable to hold-down screw, belongs to medical apparatus and instruments.
Background technology
At present, human fracture's hold-down screw head is a sphere screw, is that sphere contacts with the synthetism steel plate during assembling, loosening easily in the use, have influence on success rate of operation, internal fixation is fallen flat, the treatment that must undergo surgery once more causes bigger slight illness to the patient.
Summary of the invention
The purpose of this utility model is to provide a kind of locking bone screw at above-mentioned weak point, be threaded structure at screw head, match with screw hole on the locked pressurized bone plate when using assembling, prevent that bone screw is loosening, increase the reliability of fracture fixation, make the bone fracture internal fixing device tool more solid and reliable, the accelerating bone healing time, thus guarantee to perform the operation successfully.
Locking bone screw takes following scheme to realize: the locking bone screw structure is made of nail bar, lock screw head, the nail bar is provided with bone thread, nail bar front end is provided with the self tapping cutting edge, is convenient to follow closely bar bone thread self tapping, is fixed on the skeleton, and the self tapping cutting edge is 1～4 sword.The lock screw head is provided with circular cone multiple thread or cylinder multiple thread, and multiple thread is 2～3.Lock screw head circular cone multiple thread or cylinder multiple thread diameter are 1: 1.1～2 with the bone thread diameter ratio of nail bar.The lock screw cephalic par is provided with hexagon endoporus or cross slotted eye, is used to insert die nut or bottle opener screws locking bone screw.
The fracture site that places human body to reset locked pressurized bone plate when locking bone screw uses, the special-purpose guider of reuse bores the bottom outlet at locking bone screw bone thread position on patient's skeleton by the locking screw center on the locked pressurized bone plate, the nail bar part bone thread that will lock the bone screw that pressurizes with special-purpose locking bottle opener or spanner is screwed on patient's bone then, along with lock screw head circular cone multiple thread or cylinder multiple thread promptly are screwed in the locking screw on the locked pressurized bone plate, till locking.
The locking bone screw characteristics: reasonable in design, the compact conformation of locking bone screw, because the nail bar front end of locking bone screw is provided with the self tapping cutting edge, can be without tapping, the nail bar of screw can be screwed on patient's skeleton.Owing to be provided with circular cone multiple thread or cylinder multiple thread at the locking bone screw head, match with locking screw on the locked pressurized bone plate during use, make blade plate and bone screw form a frame structure, make it more solid and reliable, can prevent that bone screw is loosening, increase the fracture fixation reliability, make the bone fracture internal fixing device tool more solid and reliable.Owing to be provided with multiple thread, when matching, locking screw on the locked pressurized bone plate increasing the screw thread contact area, and anti-loosening property is good, and can increase the intensity that is threaded.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is locking bone screw embodiment 1.
Fig. 2 is locking bone screw embodiment 2.
The specific embodiment
With reference to accompanying drawing 1, locking bone screw embodiment 1, the locking bone screw structure is made of nail bar 4, lock screw 2, the nail bar is provided with bone thread 5, nail bar 4 front ends are provided with self tapping cutting edge 6, are convenient to follow closely bar bone thread self tapping, are fixed on the skeleton, and self tapping cutting edge 6 is 1～4 sword.
The lock screw head is provided with circular cone multiple thread 3, and multiple thread is 2～3.The lock screw cephalic par is provided with hexagon endoporus 1 or cross slotted eye, is used to insert bottle opener or die nut screws locking bone screw.Circular cone multiple thread 3 helical pitches are identical with bone thread 5 pitch of nail bar.Circular cone multiple thread diameter is greater than the bone thread diameter of nail bar.Lock screw head circular cone multiple thread diameter is 1: 1.1～2 with the bone thread diameter ratio of nail bar.
With reference to accompanying drawing 2, be locking bone screw embodiment 2, the locking bone screw structure is made of nail bar 10, lock screw 8, nail bar 10 is provided with bone thread 11, nail bar front end is provided with self tapping cutting edge 12, is convenient to follow closely bar bone thread self tapping, is fixed on the skeleton, and the self tapping cutting edge is 1～4 sword.
The lock screw head is provided with cylinder multiple thread 9, and multiple thread is 2～3.The lock screw cephalic par is provided with hexagon endoporus 7 or cross slotted eye, is used to insert bottle opener or die nut screws locking bone screw.Cylinder multiple thread 9 helical pitches are identical with bone thread 11 pitch of nail bar.Cylinder multiple thread diameter is greater than the bone thread diameter of nail bar.Lock screw head cylinder multiple thread 9 diameters are 1: 1.1～2 with the bone thread 11 diameters ratio of nail bar.
Lock screw head circular cone multiple thread 3 or cylinder multiple thread 9 helical pitches are identical with the bone thread pitch of nail bar.
Claims (7)
1, a kind of locking bone screw is characterized in that structure is made of nail bar, lock screw head, and the nail bar is provided with bone thread, and the lock screw head is provided with circular cone multiple thread or cylinder multiple thread.
2, locking bone screw according to claim 1 is characterized in that following closely the bar front end and is provided with the self tapping cutting edge.
3, locking bone screw according to claim 1 and 2 is characterized in that the self tapping cutting edge is 1～4 sword.
4, locking bone screw according to claim 1 is characterized in that circular cone multiple thread or cylinder multiple thread are 2～3.
5, locking bone screw according to claim 1 is characterized in that lock screw head circular cone multiple thread or cylinder multiple thread diameter and the bone thread diameter ratio of nail bar are 1: 1.1～2.
6, locking bone screw according to claim 1 is characterized in that the lock screw cephalic par is provided with hexagon endoporus or cross slotted eye.
7, locking bone screw according to claim 1 is characterized in that lock screw head circular cone multiple thread or cylinder multiple thread helical pitch are identical with the bone thread pitch of nail bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620071294 CN2912548Y (en) | 2006-05-15 | 2006-05-15 | Locked bone fracture screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620071294 CN2912548Y (en) | 2006-05-15 | 2006-05-15 | Locked bone fracture screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2912548Y true CN2912548Y (en) | 2007-06-20 |
Family
ID=38167149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620071294 Expired - Lifetime CN2912548Y (en) | 2006-05-15 | 2006-05-15 | Locked bone fracture screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2912548Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103876817A (en) * | 2012-12-21 | 2014-06-25 | 江苏安格尔医疗器械有限公司 | Multi-start thread U-shaped nail |
| CN111065345A (en) * | 2017-06-27 | 2020-04-24 | 美多斯国际有限公司 | Bone screw |
-
2006
- 2006-05-15 CN CN 200620071294 patent/CN2912548Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103876817A (en) * | 2012-12-21 | 2014-06-25 | 江苏安格尔医疗器械有限公司 | Multi-start thread U-shaped nail |
| CN111065345A (en) * | 2017-06-27 | 2020-04-24 | 美多斯国际有限公司 | Bone screw |
| CN111065345B (en) * | 2017-06-27 | 2023-10-31 | 美多斯国际有限公司 | bone screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7537596B2 (en) | Bone plates with intraoperatively tapped apertures | |
| US7717945B2 (en) | Orthopedic systems | |
| CA2487571A1 (en) | Intramedullary fixation device for metaphyseal long bone fractures | |
| US9907597B2 (en) | Bone compression system and associated methods | |
| WO2007146165A2 (en) | Bone plates with intraoperatively tapped apertures | |
| AU2012355840A1 (en) | Plate and cannulated transfixation screw system for human implant | |
| CN201768025U (en) | Clavicle intramedullary nail | |
| JPH06245941A (en) | Barrel plate for redressing and fixing fracture | |
| CN2912548Y (en) | Locked bone fracture screw | |
| CN1846643A (en) | Locking bone screw | |
| JP3220942U (en) | Locking external fixation device for the treatment of tibial fractures | |
| CN204931828U (en) | A kind of way of escape spinal fixation system | |
| CN204133596U (en) | A kind of synthetism Wicresoft locking device | |
| CN2577787Y (en) | Self locked anatomic form hip driving steel plate and its pecial positioning guide | |
| CN211883996U (en) | Novel supporting and pressurizing screw for femoral neck fracture | |
| CN112137708A (en) | Femoral neck fracture reduction pressurizer | |
| CN110974387A (en) | Novel supporting and pressurizing screw for femoral neck fracture | |
| CN106264704B (en) | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device | |
| CN206434408U (en) | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device | |
| CN2075949U (en) | Internal fixator for radix arcus vertebrae spinal column | |
| RU94444U1 (en) | LOCK FOR OSTEOSYNTHESIS OF FRACTURES OF THE PROXIMAL FEM | |
| CN202288435U (en) | Broken-type threaded location needle | |
| CN210130911U (en) | Steel plate auxiliary instrument for increasing internal fixation strength of fracture | |
| CN200948166Y (en) | Screw for connecting bones | |
| CN213075866U (en) | Double-thread compression screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU CITY KANGHUI MEDICAL DEVICE CO., LTD. Free format text: FORMER OWNER: JIANG YIKANG Effective date: 20090424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090424 Address after: No. 1-8, Tian Shan Road, Xinbei District, Jiangsu, Changzhou: 213022 Patentee after: Kanghui Medical Innovation Co., Ltd. Address before: Changzhou Kang Hui medical instruments Co., Ltd., 1-8 Tian Shan Road, Xinbei District, Jiangsu, Changzhou 213022, China Patentee before: Jiang Yikang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070620 |
|
| EXPY | Termination of patent right or utility model |