CN219516494U - Anti-rotation femoral intramedullary nail - Google Patents
Anti-rotation femoral intramedullary nail Download PDFInfo
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- CN219516494U CN219516494U CN202320414534.3U CN202320414534U CN219516494U CN 219516494 U CN219516494 U CN 219516494U CN 202320414534 U CN202320414534 U CN 202320414534U CN 219516494 U CN219516494 U CN 219516494U
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- rotation
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- nail
- femur
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The utility model discloses an anti-rotation femoral intramedullary nail, which comprises a femoral nail, wherein through holes are formed in the proximal end and the distal end of the femoral nail, positioning cylinders are inserted into the through holes of the femoral nail in a penetrating manner, and the positioning cylinders are fixed in the through holes of the femoral nail; the femoral neck screw comprises a tail rod part and a tap part, one end of the tail rod part is fixed with the tap part, and the tail rod part is inserted into the positioning cylinder in a penetrating way; the anti-rotation component is detachably inserted into the positioning cylinder, a femoral neck screw is inserted into the anti-rotation component, and the femoral neck screw and the positioning cylinder are used for limiting relative rotation through the anti-rotation component. The utility model solves the problems that the existing femur neck screw is provided with the anti-rotation pin inserted on the femur nail for limiting the position of the femur neck screw on the femur nail, but the mode of positioning the femur neck screw and the femur nail position has the defect that the anti-rotation pin is required to penetrate through the femur nail to be inserted on the femur in use, and the injury to the femur of a patient is increased.
Description
Technical Field
The utility model relates to the technical field of orthopedic medical instruments, in particular to an anti-rotation femoral intramedullary nail.
Background
The intramedullary nail belongs to an orthopedic internal fixation device in a medical device, and is structurally provided with an intramedullary nail rod, a proximal locking screw hole is arranged at the proximal end of the intramedullary nail rod, a decompression plane is arranged on the surface of the intramedullary nail rod, the intramedullary nail for fixing the proximal femur fracture is provided with a femur nail capable of penetrating into the femoral marrow cavity from the proximal end and a femur neck screw penetrating into a through hole extending from the side surface and inclined to the longitudinal axis of the femur nail, and when the proximal femur end is fixed, the rotation of the femur neck screw and the rotation of the femur neck screw around the longitudinal axis of the femur nail are required to be prevented.
The utility model discloses a CN205054397U, the name is a prevent revolving femoral intramedullary nail, including having one and penetrating femoral nail, the femoral neck screw of femoral bone marrow inner chamber by the proximal end, prevent revolving round pin and solid fixed ring, through-hole and auxiliary hole have been seted up to the side of femoral nail, the central line of through-hole and auxiliary hole is parallel to each other in the coplanar, and femoral neck screw and prevent revolving round pin wear to establish respectively in through-hole and auxiliary hole, gu fixed ring's one end and the tail end fixed connection of preventing revolving round pin, gu fixed ring's the other end has the fixed orifices, gu fixed orifices suit is at the end of femoral neck screw, and the end of femoral neck screw has the nut, and the external diameter of nut is slightly greater than the internal diameter of fixed orifices, gu fixed ring and femoral neck screw are last be equipped with be used for fixed femoral neck screw and gu fixed ring relative pivoted limit structure.
However, in order to prevent rotation between the femoral neck screw and the longitudinal axis of the bone screw, the above femoral intramedullary nail is used for limiting the position of the femoral neck screw on the femoral nail by arranging the anti-rotation pin inserted on the femoral neck screw, but the mode of positioning the positions of the femoral neck screw and the femoral nail requires that the anti-rotation pin is inserted on the femur through the femoral nail in use, which increases injury to the femur of a patient and affects the overall rehabilitation of the patient.
Disclosure of Invention
The utility model aims to provide an anti-rotation femoral intramedullary nail, which aims to improve the problem that the existing anti-rotation pin inserted on a femoral neck screw is arranged on the femoral neck screw and used for limiting the position of the femoral neck screw on the femoral nail, but the mode of positioning the femoral neck screw and the femoral nail position has the problem that the anti-rotation pin needs to be inserted on the femur through the femoral nail in use, so that injury to the femur of a patient is increased.
The utility model is realized in the following way: an anti-rotation femoral intramedullary nail, comprising:
the proximal end and the distal end of the femur nail are respectively provided with a through hole, positioning cylinders are inserted into the through holes of the femur nail in a penetrating way, and the positioning cylinders are fixed in the through holes of the femur nail;
the femoral neck screw comprises a tail rod part and a tap part, one end of the tail rod part is fixed with the tap part, and the tail rod part is inserted into the positioning cylinder in a penetrating way;
the anti-rotation component is detachably inserted into the positioning cylinder, a femoral neck screw is inserted into the anti-rotation component, and the femoral neck screw and the positioning cylinder are used for limiting relative rotation through the anti-rotation component.
Further, the anti-rotation piece comprises a positioning ring and an anti-rotation barrel, wherein the anti-rotation barrel is vertically fixed on the positioning ring, and the circle centers of the positioning ring and the anti-rotation barrel are on the same vertical line.
Further, a plurality of positioning grooves are uniformly formed in one end of the positioning cylinder, and a plurality of positioning slots are uniformly formed in the inner wall of the positioning cylinder.
Further, a plurality of positioning inserting columns are vertically fixed on one end face of the positioning ring, which is close to the anti-rotation barrel, and the positioning inserting columns are inserted into a plurality of positioning grooves of the positioning barrel to be used for limiting the anti-rotation piece to rotate in the positioning barrel.
Further, a plurality of positioning cutting bars are uniformly and vertically fixed on the outer wall of the anti-rotation barrel, and the positioning cutting bars are in limiting insertion connection with the positioning slots on the inner wall of the positioning barrel and used for limiting the anti-rotation piece to rotate in the positioning barrel.
Further, a plurality of inner clamping grooves are uniformly formed in the inner wall of the anti-rotation cylinder.
Further, the outside of tail pole portion is fixed with the sand grip cover, and the outside of sand grip cover evenly is fixed with many sand grips, and the sand grip of sand grip cover is used for spacing tail pole portion to rotate in anti-rotation section of thick bamboo with the interior draw-in groove slip grafting in the anti-rotation section of thick bamboo.
Compared with the prior art, the utility model has the beneficial effects that: the tail rod part of the femur neck screw is penetrated through the positioning cylinder in the upper through hole of the femur nail, then the tool is used for rotating the tail rod part in the positioning cylinder of the femur nail, the screw tap part is fixed with the femur of a patient, then an anti-rotation part is sleeved at one end of the tail rod part far away from the screw tap part, the positioning inserting column and the positioning inserting strip in the anti-rotation part are utilized to be in limit insertion with the positioning groove and the positioning inserting groove in the positioning cylinder, the anti-rotation part and the positioning cylinder are in limit, and meanwhile, the convex strip on the convex strip sleeve on the tail rod part is in slip insertion with the inner clamping groove in the anti-rotation cylinder, so that the femur neck screw is limited to rotate under the condition that secondary damage is not needed to the femur of the patient, the firmness of the femur neck screw connection on the femur is maintained, the injury to a human body is reduced, and later recovery is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic exploded view of the present utility model;
FIG. 3 is a schematic view of the structure of a femoral nail in an embodiment of the present utility model;
FIG. 4 is a schematic view of a femoral neck screw according to an embodiment of the present utility model;
fig. 5 is a schematic exploded view of the anti-rotation member according to the embodiment of the present utility model.
In the figure: 1. femur nails; 11. a positioning cylinder; 111. a positioning groove; 112. positioning the slot; 2. a femoral neck screw; 21. a tail rod portion; 22. a tap portion; 23. a convex strip sleeve; 24. an anti-rotation member; 241. a positioning ring; 242. an anti-rotation cylinder; 243. positioning the inserted column; 244. an inner clamping groove; 245. positioning the cutting.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Referring to fig. 1, 2, 3, 4 and 5, an anti-rotation femoral intramedullary nail comprises:
the femur nail 1, the proximal end and the distal end of the femur nail 1 are provided with through holes, the through holes of the femur nail 1 are respectively penetrated and inserted with a positioning cylinder 11, and the positioning cylinders 11 are fixed in the through holes of the femur nail 1;
the femoral neck screw 2, the femoral neck screw 2 comprises a tail rod part 21 and a tap part 22, one end of the tail rod part 21 is fixed with the tap part 22, and the tail rod part 21 is inserted into the positioning cylinder 11 in a penetrating way;
the anti-rotation component 24 is detachably inserted into the positioning barrel 11, the femoral neck screw 2 is inserted into the anti-rotation component 24, and relative rotation between the femoral neck screw 2 and the positioning barrel 11 is limited through the anti-rotation component 24.
Referring to fig. 4 and 5, in order to limit rotation between the femoral neck screw 2 and the positioning barrel 11, the anti-rotation member 24 includes a positioning ring 241 and an anti-rotation barrel 242, wherein the anti-rotation barrel 242 is vertically fixed on the positioning ring 241, the circle centers of the positioning ring 241 and the anti-rotation barrel 242 are on the same vertical line, a plurality of positioning slots 111 are uniformly provided at one end of the positioning barrel 11, and a plurality of positioning slots 112 are uniformly provided on the inner wall of the positioning barrel 11.
Referring to fig. 4 and 5, in order to limit the rotation preventing member 24 to rotate in the positioning cylinder 11, a plurality of positioning posts 243 are vertically fixed on an end surface of the positioning ring 241 near the rotation preventing cylinder 242, and the plurality of positioning posts 243 are inserted into the plurality of positioning slots 111 of the positioning cylinder 11 for limiting the rotation preventing member 24 to rotate in the positioning cylinder 11, a plurality of positioning cutting 245 are uniformly and vertically fixed on an outer wall of the rotation preventing cylinder 242, and the plurality of positioning cutting 245 are in limiting insertion with the positioning slots 112 on an inner wall of the positioning cylinder 11 for limiting the rotation preventing member 24 to rotate in the positioning cylinder 11.
Referring to fig. 4 and 5, in order to limit the rotation of the tail rod 21 in the anti-rotation barrel 242, a plurality of inner clamping grooves 244 are uniformly formed on the inner wall of the anti-rotation barrel 242, the outer portion of the tail rod 21 is fixedly provided with a convex strip sleeve 23, the outer portion of the convex strip sleeve 23 is uniformly fixedly provided with a plurality of convex strips, and the convex strips on the convex strip sleeve 23 are slidably inserted into the inner clamping grooves 244 in the anti-rotation barrel 242 for limiting the rotation of the tail rod 21 in the anti-rotation barrel 242.
Working principle: when the screw is used, firstly, the tail rod part 21 of the femoral neck screw 2 is penetrated through the positioning cylinder 11 in the through hole on the femoral nail 1, then, the tool is used for rotating the tail rod part 21 in the positioning cylinder 11 of the femoral nail 1, the screw tap part 22 is fixed with the femur of a patient, then, the anti-rotation part 24 is sleeved at one end of the tail rod part 21 far away from the screw tap part 22, the positioning inserting columns 243 and the positioning inserting strips 245 in the anti-rotation part 24 are used for limiting and inserting with the positioning grooves 111 and the positioning inserting grooves 112 in the positioning cylinder 11, the anti-rotation part 24 and the positioning cylinder 11 are limited, and meanwhile, the anti-rotation part 2 is limited in the anti-rotation cylinder 242 by sliding and inserting the convex strips on the convex strip sleeve 23 on the tail rod part 21 into the inner clamping grooves 244 in the anti-rotation cylinder 242.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. An anti-rotation femoral intramedullary nail, comprising:
the femoral nail (1), wherein through holes are formed in the proximal end and the distal end of the femoral nail (1), positioning cylinders (11) are inserted into the through holes of the femoral nail (1) in a penetrating manner, and the positioning cylinders (11) are fixed in the through holes of the femoral nail (1);
the femoral neck screw (2), the femoral neck screw (2) comprises a tail rod part (21) and a tap part (22), one end of the tail rod part (21) is fixedly provided with the tap part (22), and the tail rod part (21) is inserted into the positioning cylinder (11) in a penetrating way;
the femur neck screw positioning device is characterized by further comprising an anti-rotation piece (24), wherein the anti-rotation piece (24) is detachably inserted into the positioning cylinder (11), the femur neck screw (2) is inserted into the anti-rotation piece (24), and the femur neck screw (2) and the positioning cylinder (11) are used for limiting relative rotation through the anti-rotation piece (24).
2. The anti-rotation femoral intramedullary nail according to claim 1, wherein the anti-rotation member (24) comprises a positioning ring (241) and an anti-rotation barrel (242), wherein the anti-rotation barrel (242) is vertically fixed on the positioning ring (241), and the centers of the positioning ring (241) and the anti-rotation barrel (242) are on the same vertical line.
3. The anti-rotation femoral intramedullary nail according to claim 2, wherein a plurality of positioning grooves (111) are uniformly formed at one end of the positioning cylinder (11), and a plurality of positioning slots (112) are uniformly formed on the inner wall of the positioning cylinder (11).
4. A rotation-preventing intramedullary nail according to claim 3, wherein a plurality of positioning posts (243) are vertically fixed on an end surface of the positioning ring (241) adjacent to the rotation-preventing cylinder (242), and the positioning posts (243) are inserted into a plurality of positioning grooves (111) of the positioning cylinder (11) for limiting rotation of the rotation-preventing member (24) in the positioning cylinder (11).
5. The anti-rotation femoral intramedullary nail according to claim 4, wherein a plurality of positioning cutting bars (245) are uniformly and vertically fixed on the outer wall of the anti-rotation barrel (242), and the positioning cutting bars (245) are in limit plug connection with the positioning slots (112) of the inner wall of the positioning barrel (11) for limiting the rotation of the anti-rotation member (24) in the positioning barrel (11).
6. The anti-rotation femoral intramedullary nail according to claim 2, wherein a plurality of inner clamping grooves (244) are uniformly formed on the inner wall of the anti-rotation barrel (242).
7. The anti-rotation femoral intramedullary nail according to claim 6, wherein a raised strip sleeve (23) is fixed on the outer portion of the tail rod portion (21), a plurality of raised strips are uniformly fixed on the outer portion of the raised strip sleeve (23), and the raised strips on the raised strip sleeve (23) are slidably inserted into inner clamping grooves (244) in the anti-rotation barrel (242) to limit the tail rod portion (21) to rotate in the anti-rotation barrel (242).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320414534.3U CN219516494U (en) | 2023-03-08 | 2023-03-08 | Anti-rotation femoral intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320414534.3U CN219516494U (en) | 2023-03-08 | 2023-03-08 | Anti-rotation femoral intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219516494U true CN219516494U (en) | 2023-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320414534.3U Active CN219516494U (en) | 2023-03-08 | 2023-03-08 | Anti-rotation femoral intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219516494U (en) |
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2023
- 2023-03-08 CN CN202320414534.3U patent/CN219516494U/en active Active
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