CN201578353U - Firmly locked long bone fracture intra-medullary nail - Google Patents
Firmly locked long bone fracture intra-medullary nail Download PDFInfo
- Publication number
- CN201578353U CN201578353U CN2009202551018U CN200920255101U CN201578353U CN 201578353 U CN201578353 U CN 201578353U CN 2009202551018 U CN2009202551018 U CN 2009202551018U CN 200920255101 U CN200920255101 U CN 200920255101U CN 201578353 U CN201578353 U CN 201578353U
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- bone fracture
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Abstract
The utility model provides a firmly locked long bone fracture intra-medullary nail, belonging to the field of orthopaedics medical appliance. The utility model aims at providing an appliance which has good fixing stability and high fixing strength, is not easy to slide and can be used for curing long bone fracture. The technical scheme is that the firmly locked long bone fracture intra-medullary nail consists of a main nail and fixing screws, wherein the positioning hole of the main nail is a locking hole with thread; the middle part of the fixing screw is a provided with locking thread; the locking thread is matched with the thread of the locking hole of the intra-medullary nail; the locking hole of the intra-medullary nail is a full threaded hole or a half-threaded long hole; the front part of the long hole is provided with thread; and the rear part of the long hole is a polished hole. In the long bone fracture intra-medullary nail, the fixing screws connected with the near end and the far end of the intra-medullary nail are fixed with the main nails by the locking holes, thus avoiding the insecure fixing and subsequent complication resulting from the reason that the diameter of the main nail is smaller than the diameter of the medullary cavity; and the main nail with the locking hole being a long hole has the advantages of firm locking and can be selected according to the treatment situation of the fracture.
Description
Technical field
This utility model relates to a kind of utensil for the treatment of long bone fracture, belongs to the orthopedic medical device technical field.
Background technology
Long bone fracture is the commonly encountered diseases in the orthopedics injuries, and industrial injury, vehicle accident, to clash all be that the reason that causes long bone fracture, particularly old people cause skeleton to become fragile along with bone loss, as runs into and slight collision such as fall down and will fracture.
At present, the main Therapeutic Method of fracture operation treatment comprise that many pieces of steinman pins or hollow screw are fixed, the nail-plate class is fixed, marrow internal fixation system etc.What use always when the treatment long bone fracture is the intramedullary pin method, at first will lead nail when this method is performed the operation and penetrating in the medullary cavity, utilizes guider to be screwed into screw respectively in the nail hole of near-end and far-end then.Will be according to position and the diameter selection suitable diameter of pulp cavity and the intramedullary pin of length of fracture line.When the intramedullary pin master follows closely diameter when thin than pulp cavity, because main nail can slide, there is fine motion on the screw at two ends, so fracture fixation is insecure, complication such as nonunion, delayed union easily take place.
Summary of the invention
Technical problem to be solved in the utility model provides that a kind of stability maintenance is good, constant intensity is high, be difficult for the firm long bone fracture intramedullary pin of locking that slides.
The technical scheme that solves the problems of the technologies described above is:
A kind ofly lock firm long bone fracture intramedullary pin, it is made up of intramedullary pin master nail, hold-down screw, and its improvements are that the locating hole of intramedullary pin master nail is threaded lock hole, there is locking screw thread at the middle part of hold-down screw, and the screw thread of locking screw thread and intramedullary pin lock hole is complementary.
The long bone fracture intramedullary pin that above-mentioned locking is firm, described intramedullary pin lock hole is the full thread hole, along the hole wall circumference screw thread is arranged.
The long bone fracture intramedullary pin that above-mentioned locking is firm, described intramedullary pin lock hole is the half-thread slotted hole, and there is screw thread the slotted hole front portion, and the rear portion of slotted hole is a unthreaded hole.
The long bone fracture intramedullary pin that above-mentioned locking is firm, the locking screw thread of described hold-down screw are positioned at the intermediary 1/2--1/3 of hold-down screw nail body place.
Adopt the long bone fracture intramedullary pin of this structure, the hold-down screw and the intramedullary pin master nail that are connected intramedullary pin near-end and far-end are fixed together by lock hole, thereby can avoid owing to the intramedullary pin master follows closely the fixing insecure and follow-up complication that diameter causes less than the pulp cavity diameter; Lock hole is that the intramedullary pin master nail of slotted hole locks the firm advantage except having, and also has the effect of pressurization, can select for use according to the fractures situation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the intramedullary pin lock hole is the sketch map of circular hole;
Fig. 3 is that the intramedullary pin lock hole is the sketch map of slotted hole.
Labelling is as follows among the figure: the intramedullary pin master follows closely 1, hold-down screw 2, locking screw thread 3, lock hole 4
The specific embodiment
The firm long bone fracture intramedullary pin of locking of the present utility model by the intramedullary pin master follow closely 1, hold-down screw 2 forms.
Show among Fig. 1, the intramedullary pin master follows closely on 1 the nail body locating hole, locating hole lays respectively at the far-end and the near-end of main ailing body, on the locating hole inwall screw thread is arranged, become threaded lock hole 4, with matchingly be, the hold-down screw 2 that passes locating hole originally has the locking screw thread 3 and the screw thread of lock hole 4 to be complementary, and the locking screw thread 3 of hold-down screw 2 is positioned at the intermediary 1/2--1/3 place of hold-down screw 2 nail bodies.
Fig. 2 shows that the lock hole 4 that the intramedullary pin master follows closely on 1 is the full thread hole, along the hole wall circumference screw thread is arranged, and can be fastenedly connected with the locking screw thread 3 of hold-down screw 2.
Fig. 3 shows that the lock hole 4 that the intramedullary pin master follows closely on 1 is the half-thread slotted hole, and there is screw thread the slotted hole front portion, and the rear portion of slotted hole is a unthreaded hole.If the diameter of intramedullary pin is thin than pulp cavity, screw passes through lock hole, if the diameter of intramedullary pin and pulp cavity coupling, hold-down screw passes in unthreaded hole.Its advantage is except can locking with the locking screw thread 3 of set bolt 2, also has the effect of pressurization, can select for use according to different patients' fractures situation.
Claims (4)
1. one kind locks firm long bone fracture intramedullary pin, it is made up of intramedullary pin master nail [1], hold-down screw [2], it is characterized in that: the locating hole of intramedullary pin master nail [1] is threaded lock hole [4], there is locking screw thread [3] at the middle part of hold-down screw [2], and locking screw thread [3] is complementary with the screw thread of intramedullary pin lock hole [4].
2. the long bone fracture intramedullary pin that locking according to claim 1 is firm is characterized in that: described intramedullary pin lock hole [4] is the full thread hole, along the hole wall circumference screw thread is arranged.
3. the long bone fracture intramedullary pin that locking according to claim 1 is firm is characterized in that: described intramedullary pin lock hole [4] is the half-thread slotted hole, and there is screw thread the slotted hole front portion, and the rear portion of slotted hole is a unthreaded hole.
4. according to claim 1, the firm long bone fracture intramedullary pin of 2 or 3 described lockings, it is characterized in that: the locking screw thread [3] of described hold-down screw [2] is positioned at the intermediary 1/2--1/3 of hold-down screw nail body place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202551018U CN201578353U (en) | 2009-12-17 | 2009-12-17 | Firmly locked long bone fracture intra-medullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202551018U CN201578353U (en) | 2009-12-17 | 2009-12-17 | Firmly locked long bone fracture intra-medullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201578353U true CN201578353U (en) | 2010-09-15 |
Family
ID=42720343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202551018U Expired - Fee Related CN201578353U (en) | 2009-12-17 | 2009-12-17 | Firmly locked long bone fracture intra-medullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201578353U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103690236A (en) * | 2013-12-28 | 2014-04-02 | 无锡雨田精密工具有限公司 | Medical screw |
| US10492803B2 (en) | 2016-09-22 | 2019-12-03 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11083503B2 (en) | 2016-09-22 | 2021-08-10 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11633219B2 (en) | 2019-06-26 | 2023-04-25 | Globus Medical, Inc. | Fenestrated pedicle nail |
-
2009
- 2009-12-17 CN CN2009202551018U patent/CN201578353U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103690236A (en) * | 2013-12-28 | 2014-04-02 | 无锡雨田精密工具有限公司 | Medical screw |
| US10492803B2 (en) | 2016-09-22 | 2019-12-03 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11083503B2 (en) | 2016-09-22 | 2021-08-10 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11490905B2 (en) | 2016-09-22 | 2022-11-08 | Globus Medical, Inc. | Systems and methods for intramedullary nail implantation |
| US11633219B2 (en) | 2019-06-26 | 2023-04-25 | Globus Medical, Inc. | Fenestrated pedicle nail |
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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: 20100915 Termination date: 20111217 |