CN213249612U - Anti-drop thighbone near-end joint pressurization fixing device - Google Patents
Anti-drop thighbone near-end joint pressurization fixing device Download PDFInfo
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- CN213249612U CN213249612U CN202021557428.3U CN202021557428U CN213249612U CN 213249612 U CN213249612 U CN 213249612U CN 202021557428 U CN202021557428 U CN 202021557428U CN 213249612 U CN213249612 U CN 213249612U
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Abstract
The utility model discloses an anti-drop thighbone near-end joint pressurization fixing device, including power hip sleeve, the lockplate, lag screw, compression screw, first locking nail and second locking nail, power hip sleeve fixed connection aslope on the lockplate, and set up lag screw through-hole and the compression screw through-hole that runs through lockplate and power hip sleeve in lockplate and power hip sleeve's junction, lag screw through-hole and compression screw through-hole communicate each other and form "8" font intercommunicating pore, and still be equipped with first locking hole and the second locking hole that is located "8" font intercommunicating pore both sides respectively on the lockplate, first locking nail and second locking nail can lock into respectively in first locking hole and the second locking hole. The utility model discloses a cooperation of first locking nail and second locking nail can improve whole fixing device's firm in connection nature, has effectively reduced the risk that fixing device drops, also can reduce simultaneously when each screw of lock and lead to lag screw to produce not hard up risk because of leverage.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to anti-drop thighbone near-end jointly pressurizes fixing device.
Background
Chinese document CN201668489U (application date: 23/04/2010) discloses a medical lag screw, which includes a threaded lag screw and a pressing anti-rotation screw that are matched with each other, wherein the front end of the threaded lag screw is provided with an external thread, the side surface of the threaded lag screw is provided with an arc-shaped groove, the rear end of the arc-shaped groove is provided with a plurality of racks that are perpendicular to the arc-shaped groove and are uniformly spaced from the arc-shaped groove, and the tail of the threaded lag screw is provided with a positioning groove; the radian of the surface of the pressurizing anti-rotation screw is the same as that of an arc-shaped groove of the threaded lag screw, the pressurizing anti-rotation screw is composed of a screw positioned at the front end and a cylinder positioned at the rear end, the diameter of the cylinder is slightly larger than that of the screw, and the thread of the screw can be in threaded connection with a rack of the threaded lag screw. The utility model discloses a structure makes the pressurization prevent that the screw soon can effectively prevent that screw thread lag screw from rotating, makes screw thread lag screw's fixed reliable and stable.
Chinese document CN104873262A (application date: 2015, 06, 04) discloses an instant compression hip screw steel plate and system, comprising: the steel plate sleeve comprises an upper through hole and a lower through hole, the body of the tension screw is provided with teeth, the compression steel plate is fixedly connected with the steel plate sleeve, the tension screw penetrates through the upper through hole, the compression screw penetrates through the lower through hole, the thread portion of the compression screw is meshed with the teeth of the body of the tension screw, and a fixing device for fixing the compression screw is arranged at the connecting portion of the compression steel plate and the steel plate sleeve. However, the fixing system of the above technical solution is generally in an oblique L shape, and in clinical application, two supports are usually only generated in the direction toward the neck of the femur and in the direction perpendicular to the axis of the femur, so that the femoral head may cause the whole fixing system to fall off under the action of external force, or the lag screw may be loosened due to leverage when the lag screw is locked after the lag screw is locked.
SUMMERY OF THE UTILITY MODEL
To prior art not enough, the utility model provides an anti-drop thighbone near-end jointly pressurizes fixing device, what its main solution was that prior art thighbone near-end jointly pressurizes fixing device produces the technical problem that drops or not hard up the defect easily.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
the anti-falling proximal femur joint pressurizing and fixing device comprises a dynamic hip sleeve, a locking plate, a lag screw, a pressurizing screw, a first locking screw and a second locking screw, wherein the dynamic hip sleeve is obliquely and fixedly connected to the locking plate, a lag screw through hole and a pressurizing screw through hole which penetrate through the locking plate and the dynamic hip sleeve are formed in the joint of the locking plate and the dynamic hip sleeve, the lag screw through hole and the pressurizing screw through hole are communicated with each other to form an 8-shaped communication hole, the lag screw and the pressurizing screw can be respectively assembled into the lag screw through hole and the pressurizing screw through hole 8 in an adaptive mode and are mutually matched together, a first locking hole and a second locking hole which are respectively positioned on two sides of the 8-shaped communication hole are further formed in the locking plate, and the first locking screw and the second locking screw can be respectively locked into the first locking hole and the second locking hole.
Further, the axes of the first locking hole, the second locking hole and the 8-shaped communication hole are arranged in a non-parallel mode.
Furthermore, the first locking nail and the lag screw which are correspondingly locked into the first locking hole, the 8-shaped communication hole and the second locking hole are arranged in a III shape with the compression screw and the second locking nail.
Further, the compression screw includes a front-stage threaded portion and a rear-stage cylindrical portion, and an outer diameter of the rear-stage cylindrical portion is slightly larger than the front-stage threaded portion.
Furthermore, a limiting step part which can form limiting fit with the rear section cylindrical part is arranged in the pressurizing screw through hole.
Furthermore, a fixed screw locking hole is formed in the locking plate, and a fixed screw capable of preventing the lag screw and the compression screw from retreating relative to the dynamic hip sleeve is locked in the fixed screw locking hole.
Furthermore, the fixed screw lock hole and the pressurizing screw through hole are coaxially arranged and are positioned at the position close to the outer end part of the pressurizing screw through hole.
Further, the first locking nail is a hollow structure locking nail.
Further, the second locking hole is a screw hole.
Further, the lag and compression screws and the dynamic hip sleeve are configured to: when the lag screw and the compression screw are respectively assembled in the lag screw through hole and the compression screw through hole, the head parts of the lag screw and the compression screw are respectively embedded in the corresponding lag screw through hole and the compression screw through hole without being exposed.
The technical scheme has the following advantages or beneficial effects:
anti-drop thighbone near-end jointly add pressure fixing device in, owing to be equipped with first locking hole and the second locking hole that is located "8" font intercommunicating pore both sides respectively on the lockplate, first locking nail and second locking nail can lock into respectively in first locking hole and the second locking hole, so, cooperation through first locking nail and second locking nail can improve whole fixing device's firm in connection nature, the risk that fixing device drops has effectively been reduced, also can reduce simultaneously when locking each screw and lead to lag screw to produce not hard up risk because of leverage.
Drawings
Fig. 1 is a schematic view of a usage state of an embodiment of the present invention.
Fig. 2 is an exploded view of the three-dimensional structure of the embodiment of the present invention.
Description of reference numerals:
1. the power hip sleeve comprises a power hip sleeve body, 2, a locking plate, 3, a tension screw, 4, a compression screw, 5, a first locking nail, 6, a second locking nail, 7, a tension screw through hole, 8, a compression screw through hole, 9, a fixing screw, 21, a first locking hole, 22, a second locking hole, 23, a fixing screw locking hole, 41, a front section thread portion, 42 and a rear section cylindrical portion.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides an anti-drop proximal femur joint compression fixation device, which is characterized in that: comprises a dynamic hip sleeve 1, a locking plate 2, a lag screw 3, a compression screw 4, a first locking nail 5 and a second locking nail 6, wherein the dynamic hip sleeve 1 is obliquely and fixedly connected on the locking plate 2, and the joint of the locking plate 2 and the dynamic hip sleeve 1 is provided with a lag screw through hole 7 and a compression screw through hole 8 which penetrate through the locking plate 2 and the dynamic hip sleeve 1, the lag screw through hole 7 and the compression screw through hole 8 are mutually communicated to form an 8-shaped communication hole, the lag screw 3 and the compression screw 4 can be respectively and adaptively assembled in the lag screw through hole 7 and the compression screw through hole 8 and mutually matched together, and a first locking hole 21 and a second locking hole 22 which are respectively positioned at two sides of the 8-shaped communication hole are also arranged on the locking plate 2, and the first locking nail 5 and the second locking nail 6 can be respectively locked into the first locking hole 21 and the second locking hole 22. It can be understood that, because be equipped with the first locking hole 21 and the second locking hole 22 that are located "8" font intercommunicating pore both sides respectively on lockplate 2, first locking nail 5 and second locking nail 6 can lock into first locking hole 21 and second locking hole 22 respectively, so, cooperation through first locking nail 5 and second locking nail 6 can improve whole fixing device's firm in connection nature, the risk that fixing device drops has effectively been reduced, also can reduce simultaneously when locking each screw and lead to lag screw 3 to produce not hard up risk because of leverage.
Referring to fig. 1 and 2, in a preferred embodiment, the axes of the first locking hole 21, the second locking hole 22 and the communication hole shaped like a figure 8 are arranged in a non-parallel manner. In one preferred embodiment, the first locking nail 5 and the lag screw 3, the compression screw 4 and the second locking nail 6 which are correspondingly locked into the first locking hole 21, the 8-shaped communication hole and the second locking hole 22 are arranged in a III shape. It can be understood that when the first locking nail 5, the lag screw 3, the compression screw 4 and the second locking nail 6 are arranged in a 'III' shape, three effective supports can be formed, stress is dispersed, and the risk of falling off of the fixing device is greatly reduced.
Referring to fig. 1 and 2, in a preferred embodiment, the compression screw 4 includes a front threaded portion 41 and a rear cylindrical portion 42, and the outer diameter of the rear cylindrical portion 42 is slightly larger than the front threaded portion 41. In one preferred embodiment, a limiting step portion capable of forming a limiting fit with the rear section cylindrical portion 42 is provided in the pressurizing screw through hole 8.
Referring to fig. 1 and 2, in a preferred embodiment, a fixing screw locking hole 23 is formed in the locking plate 2, and a fixing screw 9 capable of preventing the lag screw 3 and the compression screw 4 from moving backward relative to the dynamic hip sleeve 1 is locked in the fixing screw locking hole 23. In one preferred embodiment, the fixing screw locking hole 23 is coaxially disposed with the pressing screw through hole 8 and is located at a position near the outer end of the pressing screw through hole 8. It can be understood that the fixing screw locking hole 23 is coaxially disposed with the pressing screw through hole 8 and located at a position near the outer end of the pressing screw through hole 8, and when the fixing screw 9 is locked into the fixing screw locking hole 23, the pressing screw 4 can be very stably and firmly limited by the fixing screw 9, so as to prevent the assembly of the lag screw 3 and the pressing screw 4 from retreating relative to the dynamic hip sleeve 1 and the locking plate 2.
Referring to fig. 1 and 2, in a preferred embodiment, the first locking pin 5 is a hollow locking pin. In one preferred embodiment, the second locking hole 22 is a threaded hole.
Referring to fig. 1 and 2, in a preferred embodiment, the lag screw 3 and compression screw 4 and the dynamic hip sleeve 1 are configured as follows: when the lag screw 3 and the compression screw 4 are fitted into the lag screw through-hole 7 and the compression screw through-hole 8, respectively, the head portions of the lag screw 3 and the compression screw 4 are embedded into the corresponding lag screw through-hole 7 and the compression screw through-hole 8, respectively, without being exposed. It will be appreciated that since the lag screw 3 and compression screw 4 are configured with the dynamic hip sleeve 1: when the lag screw 3 and the compression screw 4 are respectively assembled in the lag screw through hole 7 and the compression screw through hole 8, the head parts of the lag screw 3 and the compression screw 4 are respectively embedded in the corresponding lag screw through hole 7 and the compression screw through hole 8 without exposure, so that the irritation of the lag screw 3 and the compression screw 4 to soft tissues around a surgical site can be greatly reduced in the clinical application process, and the pain degree of a patient is reduced.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; these modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and therefore, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present invention.
Claims (10)
1. Anti-drop thighbone near-end unites pressurization fixing device, its characterized in that: comprises a dynamic hip sleeve (1), a locking plate (2), a lag screw (3), a compression screw (4), a first locking nail (5) and a second locking nail (6), wherein the dynamic hip sleeve (1) is obliquely and fixedly connected on the locking plate (2), a lag screw through hole (7) and a compression screw through hole (8) which penetrate through the locking plate (2) and the dynamic hip sleeve (1) are arranged at the joint of the locking plate (2) and the dynamic hip sleeve (1), the lag screw through hole (7) and the compression screw through hole (8) are mutually communicated to form an 8-shaped communication hole, the lag screw (3) and the compression screw (4) can be respectively and adaptively assembled in the lag screw through hole (7) and the compression screw through hole (8) and mutually matched together, and the locking plate (2) is also provided with a first locking hole (21) and a second locking hole (22) which are respectively positioned at two sides of the 8-shaped communication hole, the first locking nail (5) and the second locking nail (6) can be locked into the first locking hole (21) and the second locking hole (22), respectively.
2. The anti-drop proximal femoral joint compression fixation device of claim 1, wherein: the axes of the first locking hole (21), the second locking hole (22) and the 8-shaped communication hole are arranged in a non-parallel way.
3. The anti-drop proximal femoral joint compression fixation device of claim 2, wherein: the first locking nail (5), the lag screw (3), the compression screw (4) and the second locking nail (6) which are correspondingly locked into the first locking hole (21), the 8-shaped communication hole and the second locking hole (22) are arranged in a III shape.
4. The anti-drop proximal femoral joint compression fixation device of claim 1, wherein: the pressurizing screw (4) comprises a front section thread part (41) and a rear section cylindrical part (42), and the outer diameter of the rear section cylindrical part (42) is slightly larger than the front section thread part (41).
5. The anti-drop proximal femoral joint compression fixation device of claim 4, wherein: a limiting step part which can form limiting matching with the rear section cylindrical part (42) is arranged in the pressurizing screw through hole (8).
6. The anti-drop proximal femoral joint compression fixation device of claim 1, wherein: a fixed screw locking hole (23) is formed in the locking plate (2), and a fixed screw (9) capable of preventing the lag screw (3) and the compression screw (4) from moving backwards relative to the dynamic hip sleeve (1) is locked in the fixed screw locking hole (23).
7. The anti-drop proximal femoral joint compression fixation device of claim 6, wherein: the fixing screw lock hole (23) is coaxially arranged with the pressurizing screw through hole (8) and is positioned at the position close to the outer end part of the pressurizing screw through hole (8).
8. The anti-drop proximal femoral joint compression fixation device of claim 1, wherein: the first locking nail (5) is a hollow locking nail.
9. The anti-drop proximal femoral joint compression fixation device of claim 1, wherein: the second locking hole (22) is a screw hole.
10. The anti-drop proximal femoral joint compression fixation device of any one of claims 1 to 9, wherein: the lag screw (3) and compression screw (4) and dynamic hip sleeve (1) are configured to: when the lag screw (3) and the compression screw (4) are respectively assembled in the lag screw through hole (7) and the compression screw through hole (8), the head parts of the lag screw (3) and the compression screw (4) are respectively embedded in the corresponding lag screw through hole (7) and the compression screw through hole (8) without being exposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021557428.3U CN213249612U (en) | 2020-07-31 | 2020-07-31 | Anti-drop thighbone near-end joint pressurization fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021557428.3U CN213249612U (en) | 2020-07-31 | 2020-07-31 | Anti-drop thighbone near-end joint pressurization fixing device |
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| Publication Number | Publication Date |
|---|---|
| CN213249612U true CN213249612U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021557428.3U Active CN213249612U (en) | 2020-07-31 | 2020-07-31 | Anti-drop thighbone near-end joint pressurization fixing device |
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| CN (1) | CN213249612U (en) |
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