CN111493992A - Self-tapping spicule - Google Patents
Self-tapping spicule Download PDFInfo
- Publication number
- CN111493992A CN111493992A CN202010347369.5A CN202010347369A CN111493992A CN 111493992 A CN111493992 A CN 111493992A CN 202010347369 A CN202010347369 A CN 202010347369A CN 111493992 A CN111493992 A CN 111493992A
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- Prior art keywords
- pin
- self
- cutting
- cutting plane
- main cutting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1655—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for tapping
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Neurology (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a self-tapping bone pin, which comprises a pin body part and a pin tip part, wherein the pin tip part is provided with a first pin tip section structure and a second pin tip section structure, the first pin tip section structure comprises a main cutting plane extending from the tip of the pin tip part along the axial direction of the bone pin, the second pin tip section structure comprises an auxiliary cutting plane extending from the tip of the pin tip part and intersected with the main cutting plane at an acute angle, the main cutting plane and the auxiliary cutting plane are intersected to form a cutting edge for cutting a bone, the pin body part is provided with a pin body section, the pin body section extends from the tail end of the main cutting plane, and an included angle larger than 90 degrees is formed between the pin body section and the main cutting plane. The invention aims to overcome the defect of low operation efficiency caused by the existing spicule and provides a self-tapping spicule capable of reducing operation steps.
Description
Technical Field
The present invention relates to the field of medical devices. In particular to a self-tapping spicule.
Background
The bone needle is an indispensable medical instrument in orthopedic surgery and is used for temporarily or long-term fixing of a fracture part, and the traditional kirschner wire, the semi-thread needle and the screw are required to be drilled on a bone, and then the bone needle is penetrated into the bone. This results in more steps and less efficiency of the procedure, thus resulting in longer procedure times.
Disclosure of Invention
The invention aims to overcome the defect of low operation efficiency caused by the existing spicule and provides a self-tapping spicule capable of reducing operation steps.
The self-tapping bone pin comprises a pin body part and a pin tip part, wherein the pin tip part is provided with a first pin tip section structure and a second pin tip section structure, the first pin tip section structure comprises a main cutting plane extending from the tip end of the pin tip part along the axial direction of the bone pin, the second pin tip section structure comprises an auxiliary cutting plane extending from the tip end of the pin tip part and intersected with the main cutting plane at an acute angle, the main cutting plane and the auxiliary cutting plane are intersected to form a cutting edge for cutting a bone, the pin body part is provided with a pin body section, the pin body section extends from the tail end of the main cutting plane, and an included angle α larger than or equal to 90 degrees is formed between the pin body section and the main cutting plane.
Preferably, the angle α between the needle body profile and the major cutting plane is between 90 ° and 135 °.
Preferably, the angle α between the needle body profile and the major cutting plane is 135 °.
Preferably, the secondary cutting surface is planar and includes an angle of 25 ° to 75 ° with the axis of the bone pin.
Preferably, the needle tip portion is provided with a main cutting plane and a plurality of auxiliary cutting surfaces, and two auxiliary cutting surfaces in the plurality of auxiliary cutting surfaces intersect with the main cutting plane to form cutting edges.
Preferably, the needle tip portion is provided with a main cutting plane and two auxiliary cutting planes, and the two auxiliary cutting planes and the main cutting plane are respectively intersected to form two cutting edges.
Preferably, the included angle β between the two cutting edges is 60 ° -145 °.
Preferably, the two minor cutting surfaces intersect and are symmetrical with respect to a plane of symmetry passing through the intersection line where the two minor cutting surfaces intersect and the axis of the bone pin.
Preferably, the intersection line of the two minor cutting surfaces makes an angle γ of 25 ° to 85 ° with the cutting edge.
Preferably, the needle body is provided with a thread at a position close to the needle tip.
Preferably, the thread extends to a needle tip, the thread avoiding the primary cutting plane, the secondary cutting surface and the needle body profile.
Compared with the prior art, the self-tapping spicule has the following beneficial effects:
the main cutting plane and the auxiliary cutting plane of the self-tapping bone pin are intersected to form a cutting edge for cutting a bone, when the bone pin is penetrated into the bone, a drill is not needed to drill a hole, the self-tapping bone pin is used for drilling the hole, and the self-tapping bone pin drilled into the bone is left in the bone to play a fixing role, so that the step of drilling the hole by the drill is omitted, and the flow and the time of an operation are saved. Meanwhile, an included angle which is larger than or equal to 90 degrees is formed between the section of the needle body and the section of the first needle tip, so that bone fragments generated by cutting can flow out along the inclined plane of the included angle.
Drawings
Fig. 1 is a front view of a self-tapping bone pin according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a self-tapping bone pin according to an embodiment of the present invention.
Fig. 3 is a left side view of a self-tapping bone pin in accordance with an embodiment of the present invention.
Fig. 4 is a front view schematically illustrating a self-tapping bone pin according to another embodiment of the present invention.
Reference numerals
1 main cutting plane, 2 auxiliary cutting planes, 3 needle body sections and 4 threads.
Detailed Description
Fig. 1 is a front view schematically illustrating a self-tapping bone pin according to an embodiment of the present invention, and fig. 2 is a top view schematically illustrating the self-tapping bone pin according to an embodiment of the present invention, as shown in fig. 1, the present invention provides a self-tapping bone pin including a pin body portion and a pin tip portion, the bone pin being provided with a first pin tip sectional structure and a second pin tip sectional structure extending from a tip end of the pin tip portion, the first pin tip sectional structure including a primary cutting plane 1 extending from the tip end of the pin tip in an axial direction of the bone pin, the second pin tip sectional structure including a secondary cutting surface extending from the tip end of the pin tip at an acute angle to the primary cutting plane, the secondary cutting surface being a flat surface in this embodiment, and the secondary cutting surface being an arc-shaped surface in other embodiments, in this embodiment, a dimension of the primary cutting plane is greater than a dimension of the secondary cutting surface in the axial direction, the primary cutting plane 1 and the secondary cutting surface 2 intersect to form a cutting edge for cutting bone, the pin body portion of the bone pin being provided with a pin body portion 3, the pin body portion of the pin, the pin body portion 3 extending from a distal end of the primary cutting plane, and an included angle of 353 is equal to an angle equal to an.
The main cutting plane 1 and the auxiliary cutting plane 2 of the self-tapping bone needle of the invention are intersected to form a cutting edge for cutting bones, when the bone needle penetrates into bones, a drill bit is not needed to drill holes, but the self-tapping bone needle drills the holes through the self-tapping bone needle, the self-tapping bone needle drilled into the bones is left in the bones to play a role of fixing, thereby the step of drilling the holes by the drill bit is omitted, the flow and the time of an operation are saved, meanwhile, an included angle α which is more than 90 degrees is formed between the section 3 of the needle body and the main cutting plane 1, bone chips generated by cutting can flow out along the inclined plane of the included angle, and then the bone chips can be conveniently taken out.
Preferably, the angle α between the needle body profile 3 and the main cutting plane 1 is 90-135 deg. in this embodiment, the angle α between the needle body profile 3 and the main cutting plane 1 is 135 deg..
In the axial direction, the size of the main cutting plane 1 is greater than or equal to the length of the needle tip, and in the present embodiment, as shown in fig. 1 and 2, the length of the main cutting plane 1 is slightly greater than the length of the needle tip.
Preferably, the angle (not shown) of the secondary cutting surface 2 to the axis of the bone needle is 25 ° to 75 °.
The needle point part is provided with a main cutting plane and a plurality of auxiliary cutting surfaces, two auxiliary cutting surfaces in the plurality of auxiliary cutting surfaces are respectively intersected with the main cutting plane to form cutting edges, the included angle β between the two cutting edges is 60-145 degrees, and the included angle gamma between the intersection line of the two auxiliary cutting surfaces and the cutting edges is 25-85 degrees.
As shown in fig. 1-3, in the present embodiment, the needle tip portion is provided with a main cutting plane 1 and two minor cutting surfaces 2, the two minor cutting surfaces 2 have the same shape and the same area, one of the minor cutting surfaces 2 intersects the main cutting plane 1 to form a first cutting edge, the other minor cutting surface 2 intersects the main cutting plane 1 to form a second cutting edge, and the two cutting edges can respectively perform cutting in different rotation directions.
Fig. 4 shows a second embodiment of the invention, in which the needle body is provided with a thread 4 near the needle tip, the thread 4 extending to the needle tip, the thread 4 enabling the bone needle to be fixed more firmly inside the bone. The thread 4 avoids the main cutting plane 1, the secondary cutting plane 2 and the needle body profile 3. Other technical features of this embodiment are the same as those of the embodiment shown in fig. 1 to 3.
In other embodiments, the needle tip is provided with a main cutting plane and three or four or five minor cutting faces, the number of minor cutting faces being determined according to the actual requirements.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the invention.
Claims (11)
1. The utility model provides a self tapping spicule, includes needle body portion and pinpoint portion, its characterized in that, pinpoint portion is equipped with first pinpoint section structure and second pinpoint section structure, first pinpoint section structure includes that the pointed end from pinpoint portion begins to follow the main cutting plane that spicule axis direction extends, second pinpoint section structure includes certainly the pointed end of pinpoint portion begins to intersect the vice cutting face that the acute angle extends with main cutting plane, the crossing cutting edge that constitutes the cutting skeleton of main cutting plane and vice cutting face, needle body portion is equipped with the needle body section, the needle body section certainly main cutting plane's end begins to extend just form between needle body section and the main cutting plane and be greater than or equal to 90 contained angle α.
2. The self-tapping bone pin of claim 1, wherein the angle α between the cross-section of the pin body and the main cutting plane is 90 ° -135 °.
3. The self-tapping bone pin of claim 2, wherein the angle α between the cross-section of the pin body and the main cutting plane is 135 °.
4. The self-tapping bone pin as in claim 1, wherein the secondary cutting surface is planar and includes an angle of 25 ° to 75 ° with the axis of the bone pin.
5. The self-tapping bone pin as claimed in claim 1, wherein the tip portion is provided with a main cutting plane and a plurality of minor cutting surfaces, two of the plurality of minor cutting surfaces respectively intersecting the main cutting plane to form a cutting edge.
6. The self-tapping bone pin as in claim 1, wherein the tip portion is provided with a main cutting plane and two minor cutting surfaces, the two minor cutting surfaces intersecting the main cutting plane to form two cutting edges, respectively.
7. The self-tapping bone pin as in claim 1, wherein the included angle β between the two cutting edges is 60 ° -145 °.
8. The self-tapping bone pin of claim 6, wherein the two minor cutting surfaces intersect and are symmetrical with respect to a plane of symmetry passing through the intersection line of the two minor cutting surfaces and the axis of the bone pin.
9. A self-tapping bone pin as in claim 8, wherein the intersection line of the two minor cutting surfaces forms an angle γ of 25 ° to 85 ° with the cutting edge.
10. The self-tapping bone pin as in any one of claims 1-9, wherein the pin body is threaded at a location proximate to the pin tip.
11. The self-tapping bone pin as in claim 10, wherein the threads extend to a tip portion, the threads avoiding the primary cutting plane, the secondary cutting plane and the pin body profile.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010347369.5A CN111493992B (en) | 2020-04-28 | 2020-04-28 | Self-tapping spicule |
| PCT/CN2021/075438 WO2021218276A1 (en) | 2020-04-28 | 2021-02-05 | Self-tapping bone pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010347369.5A CN111493992B (en) | 2020-04-28 | 2020-04-28 | Self-tapping spicule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111493992A true CN111493992A (en) | 2020-08-07 |
| CN111493992B CN111493992B (en) | 2022-03-08 |
Family
ID=71849383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010347369.5A Active CN111493992B (en) | 2020-04-28 | 2020-04-28 | Self-tapping spicule |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111493992B (en) |
| WO (1) | WO2021218276A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021218276A1 (en) * | 2020-04-28 | 2021-11-04 | 北京骨外固定技术研究所 | Self-tapping bone pin |
| JP7398850B1 (en) | 2023-06-09 | 2023-12-15 | 株式会社メドメタレックス | bone extractor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5925048A (en) * | 1998-03-13 | 1999-07-20 | Osteomed | Bone screw |
| CN201831939U (en) * | 2010-11-03 | 2011-05-18 | 北京骨外固定技术研究所 | Combined multifunctional osteotomy device |
| CN203362767U (en) * | 2013-06-13 | 2013-12-25 | 张家铭 | Tapping screw |
| CN204274627U (en) * | 2014-11-28 | 2015-04-22 | 江苏安格尔医疗器械有限公司 | A kind of self tapping is from brill type lock screw |
| CN208435757U (en) * | 2017-12-12 | 2019-01-29 | 上海伍健医疗器械有限公司 | A kind of traditional method of indicating the pronunciation of a Chinese character self tapping bone nail |
| CN109567915A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of metal bone needle with drill bit function |
| CN208910437U (en) * | 2017-11-08 | 2019-05-31 | 天津正天医疗器械有限公司 | A kind of self-taped type cancellous bone screw |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994012107A1 (en) * | 1992-11-28 | 1994-06-09 | Thomas Schewior | Self-drilling cutting wire for piercing through bones, fixing and if required bracing bones or bone fragments |
| US6565573B1 (en) * | 2001-04-16 | 2003-05-20 | Smith & Nephew, Inc. | Orthopedic screw and method of use |
| JP2014514019A (en) * | 2011-03-10 | 2014-06-19 | シンセス・ゲーエムベーハー | Awl screw fixing member and related system |
| CN111493992B (en) * | 2020-04-28 | 2022-03-08 | 北京骨外固定技术研究所 | Self-tapping spicule |
-
2020
- 2020-04-28 CN CN202010347369.5A patent/CN111493992B/en active Active
-
2021
- 2021-02-05 WO PCT/CN2021/075438 patent/WO2021218276A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5925048A (en) * | 1998-03-13 | 1999-07-20 | Osteomed | Bone screw |
| CN201831939U (en) * | 2010-11-03 | 2011-05-18 | 北京骨外固定技术研究所 | Combined multifunctional osteotomy device |
| CN203362767U (en) * | 2013-06-13 | 2013-12-25 | 张家铭 | Tapping screw |
| CN204274627U (en) * | 2014-11-28 | 2015-04-22 | 江苏安格尔医疗器械有限公司 | A kind of self tapping is from brill type lock screw |
| CN208910437U (en) * | 2017-11-08 | 2019-05-31 | 天津正天医疗器械有限公司 | A kind of self-taped type cancellous bone screw |
| CN208435757U (en) * | 2017-12-12 | 2019-01-29 | 上海伍健医疗器械有限公司 | A kind of traditional method of indicating the pronunciation of a Chinese character self tapping bone nail |
| CN109567915A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of metal bone needle with drill bit function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021218276A1 (en) * | 2020-04-28 | 2021-11-04 | 北京骨外固定技术研究所 | Self-tapping bone pin |
| JP7398850B1 (en) | 2023-06-09 | 2023-12-15 | 株式会社メドメタレックス | bone extractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111493992B (en) | 2022-03-08 |
| WO2021218276A1 (en) | 2021-11-04 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Huaqing Inventor after: Zheng Xuejian Inventor after: Xia Yu Inventor after: Jin Shengai Inventor after: Tang Peifu Inventor after: Liu Limin Inventor after: Zhang Yaohua Inventor after: Wu Hongying Inventor after: Tang Jinshu Inventor after: Li Qiang Inventor after: Huang Xiaoyu Inventor after: Peng Aimin Inventor before: Yang Qinghua Inventor before: Wu Hongying Inventor before: Tang Jinshu Inventor before: Tang Peifu Inventor before: Zhang Yaohua Inventor before: Li Qiang Inventor before: Huang Xiaoyu Inventor before: Peng Aimin Inventor before: Zheng Xuejian Inventor before: Xia Yu Inventor before: Jin Shengai |
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