CN205626075U - Intramedullary nail with lock - Google Patents
Intramedullary nail with lock Download PDFInfo
- Publication number
- CN205626075U CN205626075U CN201620171202.7U CN201620171202U CN205626075U CN 205626075 U CN205626075 U CN 205626075U CN 201620171202 U CN201620171202 U CN 201620171202U CN 205626075 U CN205626075 U CN 205626075U
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- nut
- screw rod
- lock
- hollow rivet
- tail
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Abstract
The utility model provides an intramedullary nail with lock, including the hollow rivet body, screw rod and two expansion devices, the screw rod is arranged at hollow rivet internally with one heart, and the afterbody is equipped with the handle, and the handle passes through the cap body and links to each other with hollow rivet body afterbody, two inflation plant layout both ends around the screw rod, the expansion device includes nut, solid fixed ring and a plurality of tooth hook piece, a plurality of tooth hook piece is arranged with one heart around the nut through solid fixed ring, is hinged nut and screw rod threaded connection with the nut, the hollow rivet body is followed closely as cylindric including the pin fin, nail body and the tail -hood that connect gradually, and open along length direction at the front and back both ends has a plurality of to lead to the groove, and the tooth hook piece is located logical inslot, the cap body links to each other with the tail -hood. Through the position of rotating screw rod adjusting nut, the tooth hook piece is leading to the inslot motion, open or closing operation simple, simple to operate, screw nut's latching characteristics for whole device simple structure, the reliability is high.
Description
Technical field
This utility model belongs to medical instruments field, especially intramedullary nail with lock.
Background technology
Intramedullary pin of the prior art, for clinically in the specific intramedullary pin for femur, tibia backbone stage casing fracture is performed the operation, supporting locating support must be used during use to squeeze in pulp cavity by intramedullary pin, after squeezing into intramedullary pin during due to clinic, position inaccurate situation between the fixing hole of locating support and rivet nut head end to happen occasionally, cause difficulty to operation process.In addition, it is inaccurate that existing intramedullary nail with lock there is also location, fixing instability, and indication is limited, and kit is many, operation complexity, the problems such as Clinical practice safety is low.
Summary of the invention
In view of this, this utility model is directed to intramedullary nail with lock, to solve the problem that in prior art, intramedullary nail with lock installs complexity, reliability is low.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that
Intramedullary nail with lock, including hollow rivet nut, screw rod and two expansion gears；Described screw rod is concentrically disposed in described hollow nail body, and afterbody is provided with handle, and described handle is connected with described hollow rivet nut afterbody by cap body；Said two expansion gear is arranged in two ends before and after described screw rod；
Described expansion gear includes nut, retainer ring and several hook sheets；Several hook sheets described are concentrically disposed in around described nut by retainer ring, hinged with described nut, and described nut is connected with described screw flight；
Described hollow rivet nut includes ailhead, nail body and the tail-hood being sequentially connected with, and described nail is as cylindrical shape, and rear and front end has several grooves along its length, and described hook sheet is positioned at described groove；Described cap body is connected with described tail-hood.
Further, described ailhead and tail-hood one end are equipped with several ridges, and described ridge is positioned at described groove.
Further, described ridge and the length of hook sheet and the length less than described groove.
Further, the blind end equal cambered surface transition of described ridge end and described groove, cambered surface transition inside the free end of described hook sheet, hinged end arc transition.
Further, the vertical section of described handle is T-shaped, holds between described cap body and tail-hood greatly, and small end is arranged through described cap body.
Further, described handle tail end is provided with screwed hole, easy disassembly.
Further, the material of described hollow rivet nut and hook sheet is Ti-6Al-7Nb, 00Cr18Ni14Mo3 or Ti-6Al-4V.
Relative to prior art, intramedullary nail with lock described in the utility model has the advantage that the position by rotating screw rod adjusting nut, and hook sheet moves in groove, opens or closed procedure is simple, easy for installation；The latching characteristics of bolt and nut so that whole apparatus structure is simple, reliability is high.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is general illustration of the present utility model；
Fig. 2 is schematic diagram during this utility model hook sheet Guan Bi；
Fig. 3 is this utility model hook sheet schematic diagram when opening；
Fig. 4 is the schematic diagram of this utility model tail-hood and the installation of handle；
In figure: the hollow rivet nut of 1-, 11-ailhead, 12-follows closely body, 121-groove, 13-tail-hood, 14-ridge 2-screw rod, 3-expansion gear, 31-nut, 32-retainer ring, 33-hook sheet, 4-handle, 5-cap body.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can be mutually combined.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, the feature defining " first ", " second " etc. can express or implicitly include one or more this feature.In description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood by concrete condition.
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As it is shown in figure 1, intramedullary nail with lock, including hollow rivet nut 1, screw rod 2 and two expansion gears 3；Screw rod 2 is concentrically disposed in hollow rivet nut 1, and afterbody is provided with handle 4, and handle 4 is connected with hollow rivet nut 1 afterbody by cap body 5；Two expansion gears 3 are arranged in two ends before and after screw rod 2；The vertical section of handle 4 is T-shaped, holds between cap body 5 and tail-hood 13 greatly, and small end is arranged through cap body 5 so that screw rod 2 can rotate, but can not move forward and backward；Handle 4 tail end is provided with screwed hole, easy disassembly；
Expansion gear 3 includes nut 31, retainer ring 32 and several hook sheets 33；Several hook sheets 33 are concentrically disposed in around nut 31 by retainer ring 32, and hinged with nut 31, nut 31 is threadeded with screw rod 2；
Hollow rivet nut 1 includes ailhead 11, nail body 12 and the tail-hood 13 being sequentially connected with, and nail body 12 is cylindric, and rear and front end has several grooves 121 along its length, and hook sheet 33 is positioned at groove 121；Cap body 5 is connected with tail-hood 13.
Ailhead 11 and tail-hood 13 one end are equipped with several ridges 14, and ridge 14 is positioned at groove 121.
Ridge 14 and the length of hook sheet 33 and the length less than groove 121；The blind end equal cambered surface transition of ridge 14 end and groove 121, cambered surface transition inside the free end of hook sheet 33, hinged end arc transition.
The material of hollow rivet nut 1 and hook sheet 33 is Ti-6Al-7Nb, 00Cr18Ni14Mo3 or Ti-6Al-4V.
Work process of the present utility model is: rotate screw rod 2 so that nut 31 is moved rearwards by, and the hook sheet 33 in front opens under the effect of front groove 121 transition face, and the hook sheet 33 at rear opens under the effect of the ridge 14 of tail-hood 13, completes to fix；During taking-up, rotating backward screw rod 2, nut 31 moves forward, and the hook sheet 33 in front closes under the effect of the ridge 14 of ailhead 11, closes, then take out under the effect of the hook sheet 33 at rear groove 121 transition face in the wings.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (7)
1. intramedullary nail with lock, it is characterised in that: include hollow rivet nut (1), screw rod (2) and two
Expansion gear (3)；Described screw rod (2) is concentrically disposed in described hollow rivet nut (1), and afterbody sets
Having handle (4), described handle (4) is connected with described hollow rivet nut (1) afterbody by cap body (5)；
Said two expansion gear (3) is arranged in two ends before and after described screw rod (2)；
Described expansion gear (3) includes nut (31), retainer ring (32) and several hook sheets (33)；
Several hook sheets (33) described are concentrically disposed in described nut (31) around by retainer ring (32),
Hinged with described nut (33), described nut (31) is threadeded with described screw rod (2)；
Described hollow rivet nut (1) includes ailhead (11), nail body (12) and the tail-hood (13) being sequentially connected with,
Described nail body (12) is cylindric, and rear and front end has several grooves (121) along its length,
Described hook sheet (33) is positioned at described groove (121)；Described cap body (5) and described tail-hood (13)
It is connected.
Intramedullary nail with lock the most according to claim 1, it is characterised in that: described ailhead (11)
Being equipped with several ridges (14) with tail-hood (13) one end, described ridge (14) is positioned at described groove
(121) in.
Intramedullary nail with lock the most according to claim 2, it is characterised in that: described ridge (14)
With the length of hook sheet (33) and less than the length of described groove (121).
Intramedullary nail with lock the most according to claim 2, it is characterised in that: described ridge (14)
The blind end equal cambered surface transition of end and described groove (121), the free end of described hook sheet (33)
Inner side cambered surface transition, hinged end arc transition.
Intramedullary nail with lock the most according to claim 1, it is characterised in that: described handle (4)
Vertical section is T-shaped, and big end is positioned between described cap body (5) and tail-hood (13), and small end is through described
Cap body (5) is arranged.
6. according to the intramedullary nail with lock according to any one of claim 1-5, it is characterised in that: described
Handle (4) tail end is provided with screwed hole.
7. according to the intramedullary nail with lock according to any one of claim 1-5, it is characterised in that: described
The material of hollow rivet nut (1) and hook sheet (33) be Ti-6Al-7Nb, 00Cr18Ni14Mo3 or
Ti-6Al-4V。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620171202.7U CN205626075U (en) | 2016-03-07 | 2016-03-07 | Intramedullary nail with lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620171202.7U CN205626075U (en) | 2016-03-07 | 2016-03-07 | Intramedullary nail with lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205626075U true CN205626075U (en) | 2016-10-12 |
Family
ID=57077060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620171202.7U Active CN205626075U (en) | 2016-03-07 | 2016-03-07 | Intramedullary nail with lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205626075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11844553B2 (en) | 2021-09-13 | 2023-12-19 | DePuy Synthes Products, Inc. | Intramedullary bone fixation device for ribs |
-
2016
- 2016-03-07 CN CN201620171202.7U patent/CN205626075U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11844553B2 (en) | 2021-09-13 | 2023-12-19 | DePuy Synthes Products, Inc. | Intramedullary bone fixation device for ribs |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |