CN102835996A - Locking pin type central nail device - Google Patents
Locking pin type central nail device Download PDFInfo
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- CN102835996A CN102835996A CN2011103364379A CN201110336437A CN102835996A CN 102835996 A CN102835996 A CN 102835996A CN 2011103364379 A CN2011103364379 A CN 2011103364379A CN 201110336437 A CN201110336437 A CN 201110336437A CN 102835996 A CN102835996 A CN 102835996A
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- nail
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- lockpin
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Abstract
The invention discloses a locking pin type central nail device, which comprises a hollow nail and a central nail, wherein the outer rotary surface of the hollow nail is provided with a first external thread section; the hollow nail is provided with an axially penetrating central hole; and the central nail is adaptively assembled in the central hole of the hollow nail, so that the hollow nail and the central nail are assembled together. The locking pin type central nail device has the advantages that after the hollow nail is arranged in the central position, the central nail is locked in the hollow nail, the strength of the hollow nail is increased, and the hollow nail is prevented from being bent or broken; after being locked in the hollow nail, the central nail can be automatically locked to be prevented from being withdrawn; according to the central nail, when the strength of the hollow nail is improved, the function of the hollow nail is not influenced; and due to the inserted pin design, the locking pin type central nail device is convenient to operate.
Description
Technical field
The present invention relates to lockpin-type center nail device.
Background technology
When treatment fracture or dislocation, its method for using of the hollow nail of use comprises: elder generation is the knock-in tack pin at the bone place clinically for orthopaedics at present; Hollow nail is socketed in nail pin place, and then hollow nail is gone into bone along the nail stylus printer; Take out the nail pin then.Adopt the staple device of this method for using, what it played fixation has only hollow nail in fact, so this staple device has following shortcoming: 1, intensity difference, and flexible or broken needle is prone to cause the internal fixation failure; 2, hollow nail is yielding, is prone to cause the internal fixation failure.
Summary of the invention
The inventor through well-designed, developed lockpin-type center nail device, it has overcome the existing deficiency of a kind of hollow nail in the background technology.
The technical scheme that is adopted that the present invention solves its technical problem is:
Lockpin-type center nail device; It comprises a hollow nail (10) and a center nail (20); The outer surface of revolution of said hollow nail (10) has first external thread section (11); Said hollow nail (10) is established the centre bore (12) that axially runs through, and advances in the centre bore (12) of hollow nail (10) through the adaptive attaching of said center nail (20) hollow nail (10) and center nail (20) are connected.
Among one preferred embodiment: the interior surface of revolution of centre bore (12) of said hollow nail (10) has internal thread segment (13); The outer surface of revolution of said center nail (20) has second external thread section (21), adaptive being screwed onto together of second external thread section (21) of the internal thread segment (13) of said centre bore (12) and center nail (20).
Among one preferred embodiment: the rear end of the centre bore (12) of said hollow nail (10) is established reaming (12a); Said center nail (20) is established union joint (22); Said reaming (12a) and union joint (22) are adaptive, and said union joint (22) end face is arranged with inserting groove (22a).
Among one preferred embodiment: said first external thread section (11) is located at hollow nail (10) fore-end; Said internal thread segment (13) is arranged near reaming (12a) and locates.
Among one preferred embodiment: the interior surface of revolution of centre bore (12) of said hollow nail (10) is arranged with and forms a cannelure (14), and the outer surface of revolution of said center nail (20) is convexly equipped with the annular lip (23) of adaptive cannelure (14); And said center nail (20) end face is arranged with the two joint-cutting grooves (24) that radially run through and intersect at least, and the axial depth of said joint-cutting groove (24) is greater than the maximum spacing (d) between center nail (20) end face and the annular lip (23).
Among one preferred embodiment: said annular lip (23) front end face is made as the pre-small post-large conical surface, and said annular lip (23) rear end face is made as annular nose circle face.
Among one preferred embodiment: said two joint-cutting grooves (24) are crossed as " ten " font.
Among one preferred embodiment: the rear end of the centre bore (12) of said hollow nail (10) is established reaming (12a), and said center nail (20) rear end evagination becomes union joint (22), and said reaming (12a) and union joint (22) are adaptive.
Among one preferred embodiment: said reaming (12a) front end face is made as the pre-small post-large conical surface, and said union joint (22) front end face is made as the conical surface of coupling reaming (12a) front end face.
Lockpin-type center nail device of the present invention is mainly used in the treatment of all kinds fracture, dislocation, and its technical scheme is compared with background technology, and it has following advantage:
1, in the centre bore of the adaptive threading hollow nail of center nail, can hollow nail and center nail be connected, can increase hollow nail intensity, can avoid hollow nail bending, distortion, and the treatment that increases the dress center nail is easy to operate fast, can not increase the treatment difficulty;
2, the surface of revolution has internal thread segment in the centre bore of hollow nail; The outer surface of revolution of center nail has second external thread section, and the centre bore internal thread segment and second external thread section are adaptive to be screwed onto together, and is easy to operate quick; Avoid hollow nail and center nail to break away from each other, increase hollow nail intensity;
3, the rear end of the centre bore of hollow nail is established reaming, and center nail is established union joint, and reaming and union joint are adaptive, increases hollow nail intensity; The union joint end face is arranged with inserting groove, is convenient to center nail is spirally connected in the hollow nail;
4, the internal thread segment of centre bore is arranged near reaming place, is convenient to center nail is spirally connected in the hollow nail;
5, the centre bore of hollow nail is established cannelure, and center nail is convexly equipped with annular lip, and the center nail end face is established the joint-cutting groove, makes the center nail rear portion have and contract in the elastic energy to rise outward, is convenient to annular lip is put in the cannelure, and firm and reliable connection increases hollow nail intensity;
6, the annular lip front end face is made as the pre-small post-large conical surface, can play the guiding role, and the annular lip rear end face is made as annular nose circle face, can prevent to pull out;
7, the reaming front end face is made as the pre-small post-large conical surface, and the union joint front end face is made as the conical surface of coupling reaming front end face, makes hollow nail reaming place also have the bullet edge, is convenient to the center nail attaching is advanced in the hollow nail.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 has illustrated the structural representation of the lockpin-type center nail device of a preferred embodiment.
Fig. 2 has illustrated the structural representation of hollow nail of the lockpin-type center nail device of a preferred embodiment.
Fig. 3 has illustrated the structural representation of center nail of the lockpin-type center nail device of a preferred embodiment.
Fig. 4 has illustrated the sketch map of the A place amplification of Fig. 1.
Fig. 5 has illustrated the structural representation of the lockpin-type center nail device of another preferred embodiment.
Fig. 6 has illustrated the structural representation of hollow nail of the lockpin-type center nail device of another preferred embodiment.
Fig. 7 has illustrated the structural representation of center nail of the lockpin-type center nail device of another preferred embodiment.
Fig. 8 has illustrated the sketch map of the B place amplification of Fig. 5.
The specific embodiment
Embodiment 1, please refers to Fig. 1 to Fig. 4, lockpin-type center nail device, and it comprises a hollow nail 10 and a center nail 20.
The said hollow nail 10 outer surfaces of revolution have first external thread section 11, and among the present embodiment, said first external thread section 11 is located at hollow nail 10 fore-ends.Said hollow nail 10 is established the centre bore 12 that axially runs through, and the rear end of said centre bore 12 is established reaming 12a, and the surface of revolution has internal thread segment 13 in the said centre bore 12, and said internal thread segment 13 is arranged on the place near reaming 12a.
The said center nail 20 outer surfaces of revolution have second external thread section 21, and the internal thread segment 13 of said second external thread section 21 and centre bore 12 is adaptive.Union joint 22 is established in said center nail 20 rear ends, and said union joint 22 is adaptive with reaming 12a.And said union joint 22 end faces are arranged with inserting groove 22a.
In the centre bore 12 with said center nail 20 adaptive threading hollow nails 10, and second external thread section 21 of said center nail 20 and internal thread segment 13 adaptive being screwed onto together of centre bore 12 are to be connected hollow nail 10 and center nail 20.
Screw-type lockpin-type center nail device is the external screw teeth design that utilizes center nail; Center nail is screwed in the hollow nail; The external screw teeth of center nail and the internal screw thread of hollow nail afterbody are combined, form an integral body, thereby improve the intensity of hollow nail; Realize ideal and strong internal fixation, reduce the risk of postoperative hollow nail bending or broken nail.
Embodiment 2; Be with a last preferred embodiment difference: please refer to Fig. 5 to Fig. 8; The surface of revolution is arranged with and forms a cannelure 14 in the centre bore 12 of said hollow nail 10, and said cannelure 14 front end faces are made as the pre-small post-large conical surface, and said cannelure 14 rear end faces are made as annular nose circle face.The rear end of the centre bore 12 of said hollow nail 10 is established reaming 12a, and said reaming 12a front end face is made as the pre-small post-large conical surface.
The said center nail 20 outer surfaces of revolution are convexly equipped with the annular lip 23 of adaptive cannelure 14, and said annular lip 23 front end faces are made as the pre-small post-large conical surface, and said annular lip 23 rear end faces are made as annular nose circle face.Said center nail 20 rear end evaginations become union joint 22, and said union joint 22 adaptive reaming 12a, said union joint 22 front end faces are made as the conical surface of coupling reaming 12a front end face, make hollow nail reaming place also have the edge 15 of bullet.And said center nail 20 end faces are arranged with the two joint-cutting grooves 24 that radially run through and intersect at least, and the axial depth of said joint-cutting groove 24 is greater than the maximum spacing d between center nail 20 end faces and the annular lip 23.Among the present embodiment, said two joint-cutting grooves 24 are crossed as " ten " font.
In the centre bore 12 with said center nail 20 adaptive threading hollow nails 10, and said annular lip 23 adaptive snapping in the cannelure 14 are to be connected hollow nail 10 and center nail 20.
Groove type lockpin-type center nail device is ladder and an elasticity groove design of utilizing center nail; When center nail is inserted hollow nail; When the ladder of center nail afterbody ran into the resistance of hollow nail inwall, the groove of center nail afterbody can shrink automatically, after center nail inserts hollow nail fully; The groove of its afterbody opens again, makes in its groove that is fixed in the hollow nail inwall; Hollow nail and center nail form an integral body, thereby improve the intensity of hollow nail, realize ideal and strong internal fixation, reduce the risk of postoperative hollow nail bending or broken nail.
1, lockpin-type center nail device of the present invention has after hollow nail implants the center, and center nail is locked in the hollow nail, increases the intensity of hollow nail, prevents the crooked or fracture of hollow nail.2, center nail is locked hollow nail after, can be automatically locked, prevent that center nail from withdrawing from.3, center nail does not influence the function of hollow nail when strengthening hollow nail intensity.4, bolt-type design, handled easily.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements according to this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (10)
1. lockpin-type center nail device; It is characterized in that: it comprises a hollow nail (10) and a center nail (20); The outer surface of revolution of said hollow nail (10) has first external thread section (11); Said hollow nail (10) is established the centre bore (12) that axially runs through, and advances in the centre bore (12) of hollow nail (10) through the adaptive attaching of said center nail (20) hollow nail (10) and center nail (20) are connected.
2. lockpin-type center nail device according to claim 1; It is characterized in that: the interior surface of revolution of centre bore (12) of said hollow nail (10) has internal thread segment (13); The outer surface of revolution of said center nail (20) has second external thread section (21), adaptive being screwed onto together of second external thread section (21) of the internal thread segment (13) of said centre bore (12) and center nail (20).
3. lockpin-type center nail device according to claim 2; It is characterized in that: the rear end of the centre bore (12) of said hollow nail (10) is established reaming (12a); Said center nail (20) is established union joint (22); Said reaming (12a) and union joint (22) are adaptive, and said union joint (22) end face is arranged with inserting groove (22a).
4. lockpin-type center nail device according to claim 3 is characterized in that: said first external thread section (11) is located at hollow nail (10) fore-end; Said internal thread segment (13) is arranged near reaming (12a) and locates.
5. lockpin-type center nail device according to claim 1; It is characterized in that: the interior surface of revolution of centre bore (12) of said hollow nail (10) is arranged with and forms a cannelure (14), and the outer surface of revolution of said center nail (20) is convexly equipped with the annular lip (23) of adaptive cannelure (14); And said center nail (20) end face is arranged with the two joint-cutting grooves (24) that radially run through and intersect at least, and the axial depth of said joint-cutting groove (24) is greater than the maximum spacing (d) between center nail (20) end face and the annular lip (23).
6. lockpin-type center nail device according to claim 5 is characterized in that: said annular lip (23) front end face is made as the pre-small post-large conical surface, and said annular lip (23) rear end face is made as annular nose circle face.
7. according to claim 5 or 6 described lockpin-type center nail devices, it is characterized in that: said two joint-cutting grooves (24) are crossed as " ten " font.
8. according to claim 5 or 6 described lockpin-type center nail devices; It is characterized in that: the rear end of the centre bore (12) of said hollow nail (10) is established reaming (12a); Said center nail (20) rear end evagination becomes union joint (22), and said reaming (12a) and union joint (22) are adaptive.
9. lockpin-type center nail device according to claim 8 is characterized in that: said reaming (12a) front end face is made as the pre-small post-large conical surface, and said union joint (22) front end face is made as the conical surface of coupling reaming (12a) front end face.
10. according to claim 2 or 5 described lockpin-type center nail devices; It is characterized in that: after said hollow nail (10) is implanted predetermined center; The adaptive attaching of center nail (20) is advanced in the centre bore (12) of hollow nail (10) hollow nail (10) and center nail (20) is connected, and is automatically locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110336437.9A CN102835996B (en) | 2011-06-23 | 2011-10-28 | Lockpin type central nail device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110172838.5 | 2011-06-23 | ||
| CN201110172838 | 2011-06-23 | ||
| CN2011101728385 | 2011-06-23 | ||
| CN201110336437.9A CN102835996B (en) | 2011-06-23 | 2011-10-28 | Lockpin type central nail device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102835996A true CN102835996A (en) | 2012-12-26 |
| CN102835996B CN102835996B (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110336437.9A Active CN102835996B (en) | 2011-06-23 | 2011-10-28 | Lockpin type central nail device |
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| Country | Link |
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| CN (1) | CN102835996B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200692A (en) * | 2018-12-27 | 2019-09-06 | 丽水市人民医院 | A kind of orthopaedics broken nail device for fetching nail |
| CN110236662A (en) * | 2018-12-27 | 2019-09-17 | 丽水市人民医院 | A kind of reduction of the fracture device and its application method |
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| CN2705123Y (en) * | 2004-04-22 | 2005-06-22 | 朱宝砚 | Bone screw |
| CN1899227A (en) * | 2006-07-20 | 2007-01-24 | 中国人民解放军第四军医大学 | Expanding type spongy bone hollow screw |
| CN1988852A (en) * | 2004-05-19 | 2007-06-27 | 芯赛斯公司 | Snap-lock for drill sleeve |
| US20100042164A1 (en) * | 2006-08-10 | 2010-02-18 | Shih-Tseng Lee | Expansion screw set and hollow nail and interior nail thereof |
| TW201108987A (en) * | 2009-09-04 | 2011-03-16 | Alliance Global Technology Co Ltd | Bone nail |
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2011
- 2011-10-28 CN CN201110336437.9A patent/CN102835996B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10352027A1 (en) * | 2003-11-07 | 2005-06-09 | Schreiber, Ulrich, Dipl.-Ing. | Navigated bone screw and method for insertion, using reinforcing inner element after removal of wire |
| CN2705123Y (en) * | 2004-04-22 | 2005-06-22 | 朱宝砚 | Bone screw |
| CN1988852A (en) * | 2004-05-19 | 2007-06-27 | 芯赛斯公司 | Snap-lock for drill sleeve |
| CN1899227A (en) * | 2006-07-20 | 2007-01-24 | 中国人民解放军第四军医大学 | Expanding type spongy bone hollow screw |
| US20100042164A1 (en) * | 2006-08-10 | 2010-02-18 | Shih-Tseng Lee | Expansion screw set and hollow nail and interior nail thereof |
| TW201108987A (en) * | 2009-09-04 | 2011-03-16 | Alliance Global Technology Co Ltd | Bone nail |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200692A (en) * | 2018-12-27 | 2019-09-06 | 丽水市人民医院 | A kind of orthopaedics broken nail device for fetching nail |
| CN110236662A (en) * | 2018-12-27 | 2019-09-17 | 丽水市人民医院 | A kind of reduction of the fracture device and its application method |
| CN110200692B (en) * | 2018-12-27 | 2022-06-28 | 丽水市人民医院 | Broken nail taking device for orthopedics |
| CN110236662B (en) * | 2018-12-27 | 2022-07-15 | 丽水市人民医院 | Fracture restorer |
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| Publication number | Publication date |
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| CN102835996B (en) | 2015-08-26 |
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Address after: 361000 No. 218, Xiang Xiang Road, Haicang District, Fujian, Xiamen Patentee after: DABO MEDICAL TECHNOLOGY CO., LTD. Address before: 361000 No. 218, Xiang Xiang Road, Haicang District, Fujian, Xiamen Patentee before: Double Engine Medical Material Co., Ltd. |