CN2453859Y - Internal fixation brne nail - Google Patents
Internal fixation brne nail Download PDFInfo
- Publication number
- CN2453859Y CN2453859Y CN 00265028 CN00265028U CN2453859Y CN 2453859 Y CN2453859 Y CN 2453859Y CN 00265028 CN00265028 CN 00265028 CN 00265028 U CN00265028 U CN 00265028U CN 2453859 Y CN2453859 Y CN 2453859Y
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- China
- Prior art keywords
- nail
- core
- lateral lobe
- outer rim
- nails
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- Expired - Fee Related
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Abstract
The utility model discloses an internally fixed bone nail for the osteological therapeutics. The end of the bone nail of the utility model is provided with a core nail with a contraction tip; the outer edge of the core nail is matched with at least two side vane nails which for longitudinal movement corresponding to the core nail and are made of shape-memory alloy; lock sleeves are matched with the outer edges of the side vane nails; a press cap is matched with the outer edges of the lock sleeves; the front ends of the side vane nails are provided with teeth outwards turned, and the outer edges of the tail ends of the side vane nails are provided with outer screws matched with inner screws of inner holes of the lock sleeves; the outer edges of the lock sleeves are provided with the outer screws matched with the inner screws of the inner hole of the press cap. The grooves are arranged between the teeth on the front ends of the outer edges of the side vane nails and the screw threads of the tail ends in the longitudinal direction of the nails.
Description
This utility model relates to a kind of orthopaedics use, with the internal fixing bone pin that marmem is made, comprises the nail body, is positioned at the nail point of nail body front end and is positioned at the ailhead of following closely the body tail end.
Existing pressurization nail is that orthopaedics is used for some fracture site is carried out fixed common apparatus, its shape is similar to screw commonly used, front end of its nail body be threaded (referring to 1, " orthopaedics internal fixation " 133 pages to 146 pages, the third edition is recommended by AO organizational technology, the People's Press publishes; 2, " the orthopaedics education must be read " Di Xunyuan etc. shows People's Medical Officer Press's front page, 116 pages).Existing nail is to realize fixed by screw thread on the nail body and the spongy bone effect of giving the bone hole wall that gets out earlier on skeleton.But because the characteristics of thread connection itself, one nail can't overcome the rotation around the nail axis, simultaneously because nail screw thread tooth depth has certain limitation, and the screw thread tooth depth can not do very high, therefore in use the distance that enters in the bone of screw thread is very limited, cancellous bone tissue itself is comparatively soft in addition, make the fixed vertically effect of single nail also bad, when old patient uses forcing screw fixedly, because physiological bone resorption, osseous tissue in the screw thread is reduced, and further reduce the bed knife of forcing screw.In addition, because tooth depth is relevant with its diameter on the screw thread, consider fixed effect, nail diameter of the prior art can not be too little, and this has just produced restriction to the position that it uses.
For overcoming the rotation that prior art can not the operative constraint knochenbruch, having produced cross sectional shape is the three flanged nail of Y type, this nail for knochenbruch around axial rotational restraint works very well, but it is then relatively poor along its axial kinematic constraint for knochenbruch, aged patient changes because of physiological sclerotin, this apparatus of more incompatible employing is fixed (" the orthopaedics education must be read " Di Xunyuan etc. are outstanding, People's Medical Officer Press's front page, 115～116 pages).Just because of these deficiencies of three flanged nail, clinically seldom use.
Establish one section screw thread or female thread in addition at the end of forcing screw, promptly form gooseneck boom nail (Richard), see that (" the orthopaedics education must be read " Di Xunyuan etc. are outstanding, People's Medical Officer Press's front page, 116～117 pages) in operation, utilize the screw thread of gooseneck boom nail front end fixing vertically to knochenbruch, again by its terminal set screw thread fixed cover tubular type nail-plate and screw that other establishes with the constraint forcing screw around axial rotation.But gooseneck boom nail implantation surgery is bigger, may the healing of its postoperative be exerted an influence.
The purpose of this utility model provides a kind of novel orthopaedics internal fixing bone pin, and in use it can overcome effectively around the rotation of axis and displacement vertically, and it can have higher second moment of area simultaneously, can bear bigger load.
This utility model has the core nail that shrinks the tip by nail body portion and its end and forms, wherein follow closely body portion and have the core nail that shrinks the tip by its end, the outer rim that is positioned at the core nail is combined with at least two lateral lobe nails of core nail lengthwise movement relatively, lock tube that is combined with in the outer rim of lateral lobe nail tail end and the pressure cap that matches with the lock tube outer rim nail on along it at core and to be vertically arranged with gathering sill.The lateral lobe nail is made with marmem, and it is provided with core and nails on the structure that gathering sill matches.Front end at the lateral lobe nail is provided with to the tooth that turns up, be provided with the external screw thread that matches with the female thread of lock tube endoporus in lateral lobe nail tail end outer rim, outer rim at lock tube has the external screw thread that matches with the female thread of being located at the pressure cap endoporus, is provided with the device that extracting tool acts on mutually in the outer end of pressure cap.The tooth of the lateral lobe nail front end in this utility model can be one tooth, also can be a plurality of teeth.In addition, the device that the extracting tool that is provided with in the outer end of pressure cap acts on mutually can be the in-line groove as existing screw head, or cross groove, or foursquare sunken inside, or four directions, six sides' projectioies, but preferably be located at the interior hexagonal depression of nail pressure cap outer end.
In this utility model, do not link to each other mutually between each lateral lobe of nail nail, and follow closely when combined, follow closely external diameter of a circle greater than core at the external diameter of a circle that each lateral lobe of its cross-section location is followed closely when lateral lobe nail and core.
As a kind of specific embodiment, this utility model core nail cross section is Y-shaped, and placing its outer rim of a slice in core is followed closely each groove is its match with core nail groove place's shape and corresponding lateral lobe nail of core nail groove of circular arc.For making it that better effect be arranged, between the screw thread of the tooth of its front end and tail end, vertically be provided with groove on the lateral lobe nail outer rim of the present utility model along what follow closely.
This utility model is the tooth that utilizes the lateral lobe of marmem manufacturing to nail on, be heated outwards dig and hammer into after undergoing phase transition form in the skeleton firm fixing.Its use and effect are as follows: the lateral lobe nail that marmem is made is heat-treated in advance, teeth directional on it is dug outward, in use be under cold conditions, lateral lobe to be nailed on the tooth of outwards digging earlier to align, again the lateral lobe nail is placed outside the core nail, with lateral lobe nail on be provided with core nail on structure that gathering sill matches and core nail on setting along its longitudinally gathering sill match, on the reuse lock tube and the screw thread of lateral lobe nail tail end will fix along its circumferential and axial between each lateral lobe nail, again the core nail is extracted out to the rear section, the front end (comprise and have toothed portion) that this moment, each lateral lobe was followed closely is like a cantilever, then nail is inserted in advance in the stepped bone hole that patient part is accomplished fluently with step drill, after the lateral lobe nail is placed on correct position (promptly being placed into the bottom, DAGU hole in stepped bone hole), under the effect of patient's body temperature, the lateral lobe nail made from marmem undergoes phase transition, recover original shape, the teeth directional of its front end is routed up outward and is acted on the wall of bone hole, and the front end that forces each lateral lobe nail is to the bending of nail y direction, at this moment again the core nail is squeezed into forward, small bone hole root until ladder bone hole, in this effect of owing to core nail outer rim lateral lobe being followed closely simultaneously, make tooth that lateral lobe nail front end turns up by " nail " to the marrow in, with firm being fixed in the bone hole of nail, lateral lobe nails on the structure that matches with the gathering sill of core nail simultaneously, can limit lateral displacement between the lateral lobe nail, and bone hole wall and the outer intermarginal interaction of lateral lobe nail can limit this utility model rotation, thereby play the secure fixation to knochenbruch.Outside lock set, screw on pressure cap again, can prevent that the core nail from withdrawing from the skeleton motion, and cause the fixed effect of the present utility model that destroys.
The tooth that this utility model lateral lobe nails on is as fixed major part, the height of tooth is not influenced by or not core nail diameter ground, in principle can be unrestricted, it can come to determine tooth height as required, and in use the degree of depth that embeds in the bone of tooth is big than prior art, so vertically fixing of this utility model wants effect to be better than prior art greatly; Secondly, because tooth depth of the present utility model does not rely on the diameter of its core nail, the nail that therefore can have the less core nail of diameter according to the concrete condition manufacturing of patient part, adapting to different patient parts, and this point is difficult to realize in the nail of prior art; The 3rd because the tooth of each lateral lobe of the present utility model nail front end is separated from each other, when these teeth that are separated from each other separately " nail " in bone, can avoid nail effectively around the rotation of following closely axis; The 4th, because the fit structure that bone hole wall nails on gathering sill to the effect of lateral lobe nail outer rim and core and the lateral lobe that matches with it nails on can further limit the rotation of knochenbruch, therefore, fixed effect of the present utility model is better.The 5th, because structure of the present utility model makes it that bigger second moment of area can be arranged, and can bear bigger load, also can simplify operation process simultaneously.The 6th, because lateral lobe of the present utility model nails on and longitudinally is provided with groove, lateral lobe nail outer rim is higher than core nail outer rim simultaneously, forms another groove that in fact exists, these grooves are fixed to knochenbruch and partly provide the blood circulation path, and this healing for the knochenbruch position has certain facilitation.
Accompanying drawing provides the structure chart of a kind of most preferred embodiment of the present utility model.
Description of drawings
Fig. 1 is the front view of this utility model embodiment in user mode.Fig. 2 is the vertical view of Fig. 1, is the CONSTRUCTED SPECIFICATION of expression nail afterbody, and the afterbody of nail has adopted partial sectional view in Fig. 2, with performance pressure cap, lock set, and the assembly relation between lateral lobe nail and core nail.Fig. 3 is Fig. 2 B-B position cutaway view.
Below in conjunction with description of drawings:
Among the embodiment that accompanying drawing provides: its core nail 2 is Y shape prism (referring to accompanying drawing 3), and its tip has the nail point 1 of contraction section, is provided with a hole that is used to extract 7 (referring to accompanying drawing 2) at core nail tail end, and the prismatical female parts 6 of its Y type is gathering sill.Three prismatical each gathering sills 6 interior (seeing accompanying drawing 3) of Y shape that lateral lobe nail 4 places core nail 2 respectively, wherein the outer rim of each lateral lobe nail 4 is a circular arc.Corresponding with the shape of core nail groove 6 with the core nail Y connected in star 6 place's shape that matches on the lateral lobe nail 4, it promptly becomes the lateral lobe nail and follows closely the structure that gathering sill matches with core.In addition, the front end of following closely at each lateral lobe has the tooth of outwards digging 3, and every lateral lobe nails on and is provided with two teeth in the present embodiment.Tail end at each lateral lobe nail is provided with one section external screw thread 11, and is provided with longitudinally groove 5 at 11 on the screw thread of the tooth 3 of lateral lobe nail front end and tail end.In external screw thread 11 fit ons of lateral lobe nail tail end female thread 10 (seeing accompanying drawing 2) on the lock set 8 is arranged, and be provided with external screw thread 9 in the outer rim of lock set 8.The female thread 14 of the endoporus setting of pressure cap 13 matches with external screw thread 9 on lock set 8 outer rims, and an interior hexagonal depression 12 that can act on mutually with inner hexagon spanner is arranged in the end of pressure cap 13.By accompanying drawing as seen, when pressure cap was not installed, core nail 2 was axially unfettered along it, can twitch vertically.When core nail 2 not being extracted out from lateral lobe nail 4 fully, lateral lobe nail 4 is subjected to the constraint of lock set 8 and core nail 2 simultaneously, can not produce laterally (just along core nail circumscribed circle circumferentially) motion between each lateral lobe nail, but its front end (comprising tooth 3 parts) can form cantilever.In addition, be also shown in by Fig. 3, each lateral lobe nail circumscribed circle is followed closely circumscribed circle diameter greater than core, therefore under confined state, can have other three grooves 15 between lateral lobe nail and core nail.
Present embodiment in use, earlier will be through the tooth 3 of the nail of the lateral lobe after the thorough disinfection its front end of aligning under the state of cooling, again three lateral lobe nails are placed in three grooves 6 of Y core nail, with the screw thread on the lock tube 8 the lateral lobe nail is locked, again core nail 2 is extracted out backward, make the front end of each lateral lobe nail 4 become cantilever, nail after will making up is then inserted in advance in the stepped bone hole that patient part is accomplished fluently with step drill, after lateral lobe nail 2 is placed on correct position (promptly being placed into the bottom, DAGU hole in stepped bone hole), under the effect of patient's body temperature, the lateral lobe nail made from marmem undergoes phase transition, begin to recover its original shape, the tooth 3 of its front end is outwards routed up and is acted on the wall of bone hole, and force the front end of each lateral lobe nail to produce crooked to the nail y direction, at this moment again core nail 2 is squeezed into forward, be positioned at the small bone hole root in ladder bone hole until core nail tip 1, in this effect of owing to core nail outer rim lateral lobe being followed closely simultaneously, can make tooth 3 that lateral lobe nail front end turns up by " nail " to the marrow in, with firm being fixed in the bone hole of nail, outside lock set, screw on pressure cap 13 again, can finish the fixing of nail.
In sum,, make it have fabulous fixed effect because of the effect of present embodiment structure, under stationary state, its vertically circumferentially all can effectively realize fixing vertically with around axis.The groove 15 of groove 5 on the lateral lobe nail 3 and lateral lobe nail 3 and 2 of core nails simultaneously for the blood circulation system of fracture site provides path, has promoted the reconstruction of blood fortune system, simultaneously also just promotion resolve symphysis.
When needs are removed this utility model, only need to screw out pressure cap 13 and lock set 8 by surgical wound, the reuse apparatus is colluding hole 7, is about to core nail 2 and pulls out, and can take out each lateral lobe nail then piecewise.
Realization of the present utility model is not limited to the structure of above embodiment, and core nail particularly of the present utility model can be other shape except that Y shape prism, but inventor of the present utility model thinks that the above embodiment that provides is optimum implementation.Other embodiment can form additional embodiments.Can become another kind of embodiment of the present utility model as I-shaped core nail.Can produce corresponding shape lateral lobe nail with different core nails is corresponding.
Claims (5)
1, a kind of internal fixing bone pin, comprise the nail body, be positioned at the nail point of nail body front end and be positioned at the ailhead of following closely the body tail end, it is characterized in that following closely body portion and have the core nail that shrinks the tip by its end, at least two lateral lobes that are positioned at core nail outer rim and core nail lengthwise movement are relatively followed closely, lock tube that matches with the outer rim of lateral lobe nail tail end and the pressure cap that matches with the lock tube outer rim constitute, nail on along it at core and to be vertically arranged with gathering sill, the lateral lobe nail is made with marmem, it is provided with core and nails on the structure that gathering sill matches, front end at the lateral lobe nail is provided with to the tooth that turns up, be provided with the external screw thread that matches with the female thread of lock tube endoporus in lateral lobe nail tail end outer rim, outer rim at lock tube has the external screw thread that matches with the female thread of being located at the pressure cap endoporus, is provided with the device that extracting tool acts on mutually in the outer end of pressure cap.
2, a kind of internal fixing bone pin according to claim 1 is characterized in that not linking to each other mutually between each lateral lobe nail, and follows closely when combined when lateral lobe nail and core, and the external diameter of a circle between each lateral lobe is followed closely is followed closely external diameter of a circle greater than core.
3, a kind of internal fixing bone pin according to claim 2 is characterized in that core nail cross section is Y-shaped, and placing its outer rim of a slice in core is followed closely each groove is its match with core nail groove place's shape and corresponding lateral lobe nail of core nail groove of circular arc.
4,, it is characterized in that vertically being provided with groove along what follow closely between the screw thread at the tooth of its front end and tail end on the lateral lobe nail outer rim according to the described a kind of internal fixing bone pin of claim 3.
5,, it is characterized in that the device that extracting tool that the outer end of nail pressure cap is provided with acts on mutually is interior hexagonal depression according to claim 1 or 2 or 3 or 4 described a kind of internal fixing bone pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00265028 CN2453859Y (en) | 2000-12-11 | 2000-12-11 | Internal fixation brne nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00265028 CN2453859Y (en) | 2000-12-11 | 2000-12-11 | Internal fixation brne nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453859Y true CN2453859Y (en) | 2001-10-17 |
Family
ID=33619504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00265028 Expired - Fee Related CN2453859Y (en) | 2000-12-11 | 2000-12-11 | Internal fixation brne nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453859Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845108A (en) * | 2012-12-05 | 2014-06-11 | 比德尔曼技术有限责任两合公司 | Dynamic bone anchor and method of manufacturing a dynamic bone anchor |
| CN103892898A (en) * | 2012-12-27 | 2014-07-02 | 比德尔曼技术有限责任两合公司 | Dynamic bone anchor |
| CN105326543A (en) * | 2014-08-08 | 2016-02-17 | 冯骄阳 | Memory alloy bone screw type anterior cervical steel plate |
| US10010361B2 (en) | 2012-06-18 | 2018-07-03 | Biedermann Technologies Gmbh & Co. Kg | Bone anchor |
| US11045237B2 (en) | 2012-12-05 | 2021-06-29 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing a dynamic bone anchor |
-
2000
- 2000-12-11 CN CN 00265028 patent/CN2453859Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10010361B2 (en) | 2012-06-18 | 2018-07-03 | Biedermann Technologies Gmbh & Co. Kg | Bone anchor |
| CN103845108A (en) * | 2012-12-05 | 2014-06-11 | 比德尔曼技术有限责任两合公司 | Dynamic bone anchor and method of manufacturing a dynamic bone anchor |
| US9861415B2 (en) | 2012-12-05 | 2018-01-09 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing the same |
| US10117695B2 (en) | 2012-12-05 | 2018-11-06 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing the same |
| CN103845108B (en) * | 2012-12-05 | 2020-06-09 | 比德尔曼技术有限责任两合公司 | Dynamic bone anchor and method of manufacturing the same |
| US10751101B2 (en) | 2012-12-05 | 2020-08-25 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing the same |
| US11045237B2 (en) | 2012-12-05 | 2021-06-29 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing a dynamic bone anchor |
| US11123124B2 (en) | 2012-12-05 | 2021-09-21 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing the same |
| US11896275B2 (en) | 2012-12-05 | 2024-02-13 | Biedermann Technologies Gmbh & Co. Kg | Dynamic bone anchor and method of manufacturing a dynamic bone anchor |
| CN103892898A (en) * | 2012-12-27 | 2014-07-02 | 比德尔曼技术有限责任两合公司 | Dynamic bone anchor |
| CN105326543A (en) * | 2014-08-08 | 2016-02-17 | 冯骄阳 | Memory alloy bone screw type anterior cervical steel plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |