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Inhaul cable type tension bone trabecula reconstruction type proximal femur intramedullary nail

A technique for proximal femur and trabecular bone, which is applied in the field of cable-type tension trabecular bone reconstruction proximal femoral intramedullary nail, which can solve the problem that it cannot be used independently, the freedom of the direction and position of the nail can not be realized, and the Multiple groups of multi-directional settings and other issues to achieve the effect of improving stability and preventing re-displacement

Pending Publication Date: 2022-02-08
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this intramedullary nail has great disadvantages. It needs to be fixed by the main nail, which cannot realize the freedom of the direction and position of the nail, and cannot be used independently, and cannot be set in multiple groups and directions.

Method used

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  • Inhaul cable type tension bone trabecula reconstruction type proximal femur intramedullary nail
  • Inhaul cable type tension bone trabecula reconstruction type proximal femur intramedullary nail
  • Inhaul cable type tension bone trabecula reconstruction type proximal femur intramedullary nail

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Effect test

Embodiment 1

[0045] Please see attached figure 1 , with figure 1 It is a schematic diagram of a cable type tension trabecular bone reconstruction proximal femoral intramedullary nail of the present invention. A cable type tension trabecular bone reconstruction proximal femoral nail, comprising an anchoring part 1, a pulling cable 2, and a fixing part 3; the anchoring part 1 is a conical screw tooth structure, preferably, Its outer surface is provided with a main thread 11 and an auxiliary thread 12, the main thread 11 and the auxiliary thread 12 are arranged at intervals, and the size of the main thread 11 is larger than the size of the auxiliary thread 12, the said The center of the bottom of the cone surface of the anchoring part 1 is connected with a pulling cable 2. The pulling cable 2 can be a titanium rope, a steel wire for surgery, etc., and the other end of the pulling cable 2 is connected to the center of one end of the fixing part 3. The fixing part 3 in this embodiment is cyli...

Embodiment 2

[0049] Please see attached Image 6 , 7 , with Image 6 It is a schematic diagram of another cable type tension trabecular bone reconstruction type proximal femoral intramedullary nail of the present invention; Figure 7 It is a schematic diagram of cooperation between another cable type tension trabecular bone reconstruction type proximal femoral intramedullary nail and the feeder of the present invention. This embodiment is basically the same as the embodiment, the difference is that the fixing part 3 and the anchoring part 1 are matched in different ways. In this embodiment, the anchoring part 1 is provided with two central Symmetrical trough-shaped structure 14, the fixed part 3 is provided with two centrally symmetrical through holes 33 on it, the through holes 33 correspond to the trough-shaped structure 14, and the basic structure of the fixed part 3 can be empty The cavity structure can also be a cylindrical entity; correspondingly, the cable type tension trabecular...

Embodiment 3

[0051] Please see attached Figure 8 , with Figure 8 It is a schematic diagram of a detachable pulling cable of a cable-type tension trabecular bone reconstruction type proximal femoral intramedullary nail of the present invention. This embodiment is basically the same as Embodiment 2, the difference is that one end of the pulling cable 2 is detachably connected to the anchoring part 1, and correspondingly, a connecting ring 15 can be provided at the center of the anchoring part 1, One end of the pulling cable 2 can be directly bound to the connecting ring 15, and the length of the pulling cable 2 can be flexibly changed according to the needs of the operation.

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Abstract

The invention relates to an inhaul cable type tension bone trabecula reconstruction type proximal femur intramedullary nail which comprises an anchoring part, a traction cable and a fixing part. A main thread and an auxiliary thread are arranged on the outer surface of the anchoring part; the bottom center of the anchoring part is connected with a traction cable, and the other end of the traction cable is connected with the center of one end of the fixing part; a first connecting part is arranged on the end surface of the anchoring part; the fixing part is provided with a second connecting part; the first connecting part and the second connecting part are detachably connected, so that the anchoring part and the fixing part work cooperatively, and separation of the anchoring part and the fixing part is not hindered. According to the invention, the anchoring part and the fixing part are fixed in the bone and are locked through the traction cable; the device can be implanted in any direction according to operation requirements; multi-group implantation can be realized, and independent work can be realized; a tension bone trabecula after fracture is reconstructed, and the bone trabecula and a pressure bone trabecula play a role together, so that the stability of fracture repair is improved together; and the influence on fracture healing and recovery caused by redisplacement after functional activity is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a cable-type tension trabecular bone reconstruction proximal femoral intramedullary nail. Background technique [0002] Trabecular bone is the main supporting structure of the proximal femur. According to its distribution, it can be divided into pressure trabecular and tension trabecular, which is the extension of the cortical bone of the proximal femur in the cancellous bone. Therefore, it plays an important role in the fixation of fractures. The internal fixation systems currently used in clinical practice are mostly of the type of support reconstruction, that is, the reconstruction of pressure trabeculae, but for unstable fractures, only restoration and reconstruction of pressure trabeculae, The stable structure of the fracture cannot be completely restored, and re-displacement occurs after functional activities, which affects fracture healing and recovery. [0003] C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/76A61B17/72A61B17/86
CPCA61B17/74A61B17/725A61B17/7275A61B17/7208A61B17/86A61B2017/8655
Inventor 王欣程黎明袁锋杨云峰
Owner SHANGHAI TONGJI HOSPITAL
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