CN214907501U - Bone screw for ligament repair - Google Patents
Bone screw for ligament repair Download PDFInfo
- Publication number
- CN214907501U CN214907501U CN202121657821.4U CN202121657821U CN214907501U CN 214907501 U CN214907501 U CN 214907501U CN 202121657821 U CN202121657821 U CN 202121657821U CN 214907501 U CN214907501 U CN 214907501U
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- Prior art keywords
- screw
- ligament
- thread
- external
- nail
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- 210000003041 ligament Anatomy 0.000 title claims abstract description 30
- 210000000988 bone and bone Anatomy 0.000 title claims description 18
- 230000008439 repair process Effects 0.000 title claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000036487 Arthropathies Diseases 0.000 description 1
- 206010048873 Traumatic arthritis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003464 cuspid Anatomy 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to be used for prosthetic coaptation screw of ligament, the nail pole is equipped with the external screw thread, and the external screw thread forms circular cone structure by the first end to the second end of nail pole, and the thread of external screw thread is the arc structure, and the hole has still been seted up to the first end of nail pole. The utility model provides a be used for prosthetic coaptation screw of ligament, with the screw by original cylindricality appearance, change into the toper gradual change formula, not only the doctor is in last nail, can be very fast go on the nail, thereby the efficiency of operation has been improved greatly, patient's operation misery has been alleviateed, in addition when the screw constantly carries out the screw in, the external diameter of screw also by little big gradual change, more the screw in, the fixed strength of screw is higher more, until whole screw in, greatly increased the fixed strength of screw and reduced the risk that the screw became invalid. The cutting force of the arc tooth form and the ligament of the human body is greatly reduced, the risk of damaging the ligament is reduced, the abrasion is reduced, and the service life of the product is prolonged.
Description
Technical Field
The utility model belongs to the technical field of medical apparatus, concretely relates to be used for prosthetic bone screw of ligament.
Background
Ligaments connect bones and bones, and are located around joints, and have the main functions in the human body of strengthening joints, maintaining the stability of joints in motion and limiting the movement of joints beyond the physiological range. If the ligament is damaged and cannot be treated correctly, the stability of the joint is seriously influenced, traumatic arthritis is caused, and even serious joint dysfunction is caused, so that the medical technology for treating the ligament damage is very important. In the existing repair operation, a threaded bottom hole is pre-drilled on a bone, and a screw is screwed into the human bone through the extrusion force of the screw and the human ligament to fix the human ligament. But has the following disadvantages: the fixed strength is low, has the risk that produces the screw inefficacy, and the thread is the cuspid design, and it is excessive not have the fillet, has the risk of cutting to the tough of human body, reduces life, and the screw is the cylindricality design, and the doctor needs very big power when beginning to go up the nail, inconvenient implantation.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model provides a bone screw for ligament is restoreed, the purpose is for the technical problem who solves.
The utility model provides a bone screw for ligament is restoreed, concrete technical scheme is as follows:
a bone screw for ligament is restoreed, including the nail pole, the nail pole is equipped with the external screw thread, the external screw thread by the first end to the second end formation cone structure of nail pole, the thread of external screw thread is the arc structure, the hole has still been seted up to the first end of nail pole.
In some embodiments, the external thread is of an equidistant tapered configuration from the first end to the second end of the shank.
In particular, the spacing of the external threads is 2-3.5mm, the maximum external diameter of the external threads is 12mm, and the minimum external diameter of the external threads is 7 mm.
In some embodiments, the radius of curvature of the arc of the male thread element is R0.3-R0.6mm.
In some embodiments, the internal bore is a quincunx configuration.
The utility model discloses following beneficial effect has: the utility model provides a be used for prosthetic coaptation screw of ligament, feel and convenient operation according to the doctor and set out, with the screw by original cylindricality appearance, change into toper gradual change formula design, in the operation, not only the doctor is in last nail, can be very fast go up the nail, and the efficiency of operation has been improved greatly, patient's operation misery has been alleviateed, the screw appearance adopts the toper design, when the screw constantly carries out the screw in, the external diameter of screw also is by little big gradual change, thereby the fixed strength of screw also is from little big gradual change, more the screw in, the fixed strength of screw is higher, until whole screw in, greatly increased the fixed strength of screw and reduced the risk that the screw became invalid. The cutting force of the arc tooth form and the ligament of the human body is greatly reduced, the risk of damaging the ligament is reduced, the abrasion is reduced, and the service life of the product is prolonged.
Drawings
Fig. 1 is a schematic perspective view of a bone screw for ligament repair provided by the present invention;
FIG. 2 is a side view of a bone screw for ligament repair provided by the present invention;
fig. 3 is a cross-sectional view at a-a in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings 1-3 in conjunction with the following embodiments.
Examples
The bone screw for ligament repair provided by the embodiment has the following specific technical scheme:
a bone screw for ligament is restoreed, including nail pole 1, nail pole 1 is equipped with external screw thread 11, and external screw thread 11 forms the circular cone structure by first end 12 to second end 13 of nail pole 1, and the screw appearance adopts the toper design, and when the screw was constantly screwed in, the external diameter of screw also is the gradual change from little to big to the fixed strength of screw also is the gradual change from little to big, and the screw in more, the fixed strength of screw is higher more, until whole screw in. The thread of external screw thread 11 is the arc structure, and the direct cutting force of circular arc tooth form and human ligament significantly reduces, has reduced the risk of damage ligament to wearing and tearing have been reduced. The first end 12 of the nail shank 1 is also provided with an inner hole 121. The inner bore 121 is used for insertion of a handle for screwing, etc.
Specifically, the external thread 11 is of an equidistant tapered structure from the first end 12 to the second end 13 of the nail shank 1. The equidistant arrangement ensures that the screw is stressed uniformly and kept stable in the screwing process.
Specifically, the pitch of the external thread 11 is 2-3.5mm, the maximum outer diameter of the external thread 11 is 12mm, and the minimum outer diameter of the external thread 11 is 7 mm.
Specifically, the radius of curvature of the circular arc of the thread of the external thread 11 is R0.3-R0.6mm. Through testing, the arc curvature radius in the range can ensure that the friction force in the screwing process is not too large, and meanwhile, the risk of damaging ligaments is reduced.
Specifically, the inner bore 121 is a quincunx structure. The slip probability of the quincunx inner hole 121 far exceeds that of the hexagonal design, so that the success rate of the operation is greatly increased and the service life of the product is greatly prolonged.
The above-mentioned only the utility model discloses the feasible embodiment of preferred is not right the utility model discloses a restriction, the utility model discloses also not be limited to the above-mentioned example, technical field's technical personnel the utility model discloses an in the essential scope, change, modification, interpolation or replacement made also should belong to the utility model discloses a protection scope.
Claims (5)
1. A bone screw for ligament is restoreed, its characterized in that, including the nail pole, the nail pole is equipped with the external screw thread, the external screw thread by the first end to the second end formation circular cone structure of nail pole, the thread of external screw thread is the arc structure, the hole has still been seted up to the first end of nail pole.
2. The bone screw for ligament repair of claim 1, wherein the external thread is of an equidistant tapered configuration from the first end to the second end of the shank.
3. The bone screw for ligament repair according to claim 2, wherein the pitch of the external thread is 2-3.5mm, the maximum outer diameter of the external thread is 12mm, and the minimum outer diameter of the external thread is 7 mm.
4. The bone screw for ligament repair according to claim 1, wherein the radius of curvature of the circular arc of the externally threaded screw thread is R0.3-r0.6 mm.
5. The bone screw for ligament repair of claim 1, wherein the internal bore is a quincunx configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121657821.4U CN214907501U (en) | 2021-07-20 | 2021-07-20 | Bone screw for ligament repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121657821.4U CN214907501U (en) | 2021-07-20 | 2021-07-20 | Bone screw for ligament repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214907501U true CN214907501U (en) | 2021-11-30 |
Family
ID=79072466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121657821.4U Active CN214907501U (en) | 2021-07-20 | 2021-07-20 | Bone screw for ligament repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214907501U (en) |
-
2021
- 2021-07-20 CN CN202121657821.4U patent/CN214907501U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Bone screws for ligament repair Effective date of registration: 20230505 Granted publication date: 20211130 Pledgee: Wuxi New District Chuang friends financing Company limited by guarantee Pledgor: Wuxi Cohen Intelligent Manufacturing Technology Co.,Ltd. Registration number: Y2023980039760 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20211130 Pledgee: Wuxi New District Chuang friends financing Company limited by guarantee Pledgor: Wuxi Cohen Intelligent Manufacturing Technology Co.,Ltd. Registration number: Y2023980039760 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Bone screws for ligament repair Granted publication date: 20211130 Pledgee: Wuxi New District Chuang friends financing Company limited by guarantee Pledgor: Wuxi Cohen Intelligent Manufacturing Technology Co.,Ltd. Registration number: Y2024980016902 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |