CN201365973Y - Anti-rotation self-locking mother-child-type intramedullary spike - Google Patents
Anti-rotation self-locking mother-child-type intramedullary spike Download PDFInfo
- Publication number
- CN201365973Y CN201365973Y CNU2009200220114U CN200920022011U CN201365973Y CN 201365973 Y CN201365973 Y CN 201365973Y CN U2009200220114 U CNU2009200220114 U CN U2009200220114U CN 200920022011 U CN200920022011 U CN 200920022011U CN 201365973 Y CN201365973 Y CN 201365973Y
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- nail
- spike
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- female
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Abstract
The utility model provides an anti-rotation self-locking mother-child-type intramedullary spike which belongs to the technical field of medical instruments, and comprises a mother spike and child spike, wherein the upper end and the lower end of the mother spike are respectively provided with mother spike screw threads; a guide mouth which guides the child spike to unfold wings is arranged above the mother spike screw threads at the lower end of the mother spike; the cavity of the mother spike is hollow; a slide groove which is corresponding to a child nail tail wing is arranged in the cavity; the upper end of the child spike is provided with child spike screw threads used for a nut to be embedded in; and the child spike tail wing is arranged at the lower end thereof. Compared with the prior art, the anti-rotation self-locking mother-child-type intramedullary spike is characterized by reasonable design, simple structure, convenient use and the like, can achieve self-locking and has strong anti-rotation ability, is firm and reliable, and is easy to promote and use.
Description
Technical field
This utility model relates to technical field of medical instruments, a kind of specifically anti-rotary automatic-lock intramedullary nail of primary-secondary type.
Background technology
In daily production, life, people usually can the accident of meeting accident cause into limb fracture, thereby intramedullary pin obtains application more and more widely.Present intramedullary pin is varied, but still there is very big deficiency, do not have auto-lock function such as most of intramedullary pins, need the X-ray location, both wasted time and energy like this, strengthen cost again, the anti-ability of revolving of intramedullary pin with auto-lock function is poor again, is offset easily, adds insufficient pressure, occur the secondary fracture easily in the intramedullary pin implantation process and after implanting, be unsuitable for the rehabilitation and the treatment of fracture.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of simple in structure, easy to use, time saving and energy saving anti-rotary automatic-lock intramedullary nail of primary-secondary type is provided.
The technical solution of the utility model realizes in the following manner, this anti-rotary automatic-lock intramedullary nail of primary-secondary type, its structure comprises female nail and son nail, upper and lower side at mother's nail is equipped with female oncomelania stricture of vagina, be convenient to screw in intramedullary pin, be provided with the unfolded guiding port of guiding nail spademan follow closely female oncomelania stricture of vagina of lower end mother above, the inner chamber of female nail is hollow, is provided with in the inner chamber and the corresponding chute of son nail empennage; The upper end of son nail is provided with the sub-oncomelania stricture of vagina that inserted num is used, and is provided with son nail empennage in the lower end.
Son nail empennage and guiding port are provided with three, and along the circumference uniform distribution.
The nail point of female nail and son nail is all tapered.
The beneficial effect that this utility model is compared with prior art produced is:
1, be provided with female oncomelania stricture of vagina, so both made things convenient for intramedullary pin to screw in bone marrow, spiral can play certain pressurization again apart from difference, is of value to the recovery from illness of fracture skeleton;
2, the son nail is fixed by nut, can produce pressurization equally, realizes auto-lock function, avoids using X-ray irradiation etc., is of value to the recovery of fracture site;
3, the setting of son nail empennage can prevent that intramedullary pin from rotating, more firm being fixed in the skeleton after the self-locking;
4, simple in structure, easy to use, save cost.Being skillfully constructed of this anti-rotary automatic-lock intramedullary nail of primary-secondary type can be saved a lot of loaded down with trivial details operating process, and be time saving and energy saving, saves cost.
Description of drawings
Accompanying drawing 1 is female pin structure sketch map of anti-rotary automatic-lock intramedullary nail of primary-secondary type;
Accompanying drawing 2 is the A-A cutaway views among Fig. 1;
Accompanying drawing 3 is sub-pin structure sketch maps of anti-rotary automatic-lock intramedullary nail of primary-secondary type;
Structural representation when accompanying drawing 4 is anti-rotary automatic-lock intramedullary nail of primary-secondary type assembling use.
Labelling in the accompanying drawing is represented respectively:
1, guiding port, 2, female oncomelania stricture of vagina, 3, female nail, 4, inner chamber, 5, son nail empennage, 6, the son nail, 7, sub-oncomelania stricture of vagina, 8, nut.
The specific embodiment
Below in conjunction with accompanying drawing anti-rotary automatic-lock intramedullary nail of primary-secondary type of the present utility model is done following detailed description the in detail.
Shown in accompanying drawing 1-4, this anti-rotary automatic-lock intramedullary nail of primary-secondary type, its structure comprises female nail and son nail, follow closely 3 upper and lower side mother and be equipped with female oncomelania stricture of vagina 2, be convenient to screw in pulp cavity, be provided with guiding nail empennage 5 unfolded guiding ports 1 follow closely female oncomelania stricture of vagina 2 of 3 lower ends mother above, the inner chamber 4 of female nail 3 is hollow, 4 li settings of inner chamber and son nail empennage 5 corresponding chutes; The upper end of son nail 6 is provided with the sub-oncomelania stricture of vagina 7 of inserted num 8 usefulness, is provided with son nail empennage 5 in the lower end.
The nail point of female nail 3 and son nail 6 is all tapered.
The use of anti-rotary automatic-lock intramedullary nail of primary-secondary type of the present utility model is: at first by female oncomelania stricture of vagina 2 mother is followed closely 3 and screw in pulp cavity, because the nail point of female nail 3 is tapered, help to reduce female resistance of following closely when advancing to follow closely like this, be convenient to the far-end that female nail 3 screws in fracture, after nail inserted, female nail 3 pitch differences by two ends can play certain pressurization; This moment the son nail empennage 5 of son nail 6 is contracted to mother and follow closely in 3, son nail 6 is squeezed in female nail 3 along inner chamber 4 by driver, open by guiding port 1 guiding fully until son nail empennage 5, fix by nut 8 then, so just finish the built-in of intramedullary pin, the fixing of nut 8 can play certain pressurization simultaneously, is of value to the rehabilitation and the recovery from illness of fracture site equally.
Except that the described technical characterictic of description, be the known technology of those skilled in the art.
Claims (3)
1, anti-rotary automatic-lock intramedullary nail of primary-secondary type, comprise female nail and son nail, the upper and lower side that it is characterized in that female nail is equipped with female oncomelania stricture of vagina, be provided with the unfolded guiding port of guiding nail spademan follow closely female oncomelania stricture of vagina of lower end mother above, the inner chamber of female nail is hollow, is provided with in the inner chamber and the corresponding chute of son nail empennage; The upper end of son nail is provided with the sub-oncomelania stricture of vagina that inserted num is used, and is provided with son nail empennage in the lower end.
2, anti-rotary automatic-lock intramedullary nail of primary-secondary type according to claim 1 is characterized in that son nail empennage and guiding port are provided with three, and along the circumference uniform distribution.
3, anti-rotary automatic-lock intramedullary nail of primary-secondary type according to claim 1 is characterized in that the nail point of female nail and son nail is all tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200220114U CN201365973Y (en) | 2009-02-18 | 2009-02-18 | Anti-rotation self-locking mother-child-type intramedullary spike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200220114U CN201365973Y (en) | 2009-02-18 | 2009-02-18 | Anti-rotation self-locking mother-child-type intramedullary spike |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201365973Y true CN201365973Y (en) | 2009-12-23 |
Family
ID=41484873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200220114U Expired - Fee Related CN201365973Y (en) | 2009-02-18 | 2009-02-18 | Anti-rotation self-locking mother-child-type intramedullary spike |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201365973Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871721A (en) * | 2012-10-26 | 2013-01-16 | 王永红 | Sacrum female and male hollow pressurizing screw |
| RU2475205C2 (en) * | 2010-12-08 | 2013-02-20 | Федеральное государственное учреждение "Новосибирский научно-исследовательский институт травматологии и ортопедии" Министерства здравоохранения и социального развития Российской Федерации (ФГУ "ННИИТО" Минздравсоцразвития России) | Transpedicular screw for spinal fixation |
| CN104487020A (en) * | 2012-05-29 | 2015-04-01 | 史密夫和内修有限公司 | Hybrid anchor |
-
2009
- 2009-02-18 CN CNU2009200220114U patent/CN201365973Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2475205C2 (en) * | 2010-12-08 | 2013-02-20 | Федеральное государственное учреждение "Новосибирский научно-исследовательский институт травматологии и ортопедии" Министерства здравоохранения и социального развития Российской Федерации (ФГУ "ННИИТО" Минздравсоцразвития России) | Transpedicular screw for spinal fixation |
| CN104487020A (en) * | 2012-05-29 | 2015-04-01 | 史密夫和内修有限公司 | Hybrid anchor |
| CN102871721A (en) * | 2012-10-26 | 2013-01-16 | 王永红 | Sacrum female and male hollow pressurizing screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20100218 |