Improved tension bone trabecula reconstruction type proximal femur intramedullary nail

A technique for proximal femur and trabecular bone, applied in the field of improved tension trabecular reconstruction proximal femoral intramedullary nails, to avoid mutual entanglement and entanglement and affect the operation and fixation effect, increase stability, and resist traction force-enhancing effect

Pending Publication Date: 2021-04-16
SHANGHAI TONGJI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no relevant report about an improved tension trabecular bone reconstruction type proximal femoral intramedullary nail that can enhance the anti-rotation and varus stress of the head and neck bone and achieve good stability.

Method used

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  • Improved tension bone trabecula reconstruction type proximal femur intramedullary nail
  • Improved tension bone trabecula reconstruction type proximal femur intramedullary nail
  • Improved tension bone trabecula reconstruction type proximal femur intramedullary nail

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Experimental program
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Effect test

Embodiment 1

[0047] An improved tension trabecular bone reconstruction type proximal femoral intramedullary nail of the present invention comprises a main nail body 1, a reconstruction device 2 and a locking device 3;

[0048] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings:

[0049] Please see attached Figure 1-4 , figure 1 It is a schematic diagram of the structure of the anterolateral side of the main nail of the modified tension trabecular bone reconstruction type proximal femoral intramedullary nail of the present invention, figure 2 It is a schematic diagram of the structure of the anteromedial side of the main nail of the modified tension trabecular bone reconstruction type proximal femoral intramedullary nail of the present invention, image 3 It is a schematic diagram of the internal structure of the through hole of the tension t...

Embodiment 2

[0058] Please see attached Figure 10 , Figure 10 It is a schematic diagram of the through-hole structure of another modified tension trabecular bone reconstruction type proximal femoral intramedullary nail of the present invention. This embodiment is basically the same as Embodiment 1, except that the opening at the end of the through hole 11 of the reconstruction device in this embodiment has an oblique internal thread structure, and the shape of the external thread structure 33 at the front end of the connecting part 32 in this embodiment (Fig. (not shown in ) is matched with the oblique internal thread structure at the end of the through hole 11 of the reconstruction device; the opening at the end of the through hole 11 of the reconstruction device is designed as an oblique internal thread structure. Since the through hole is vertebral, the anchor When the nail 21 is driven in, it can be operated universally (screwed in different angle directions), and the direction of d...

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Abstract

The invention relates to an improved tension bone trabecula reconstruction type proximal femur intramedullary nail. The improved tension bone trabecula reconstruction type proximal femur intramedullary nail comprises a main nail body, a reconstruction device and a locking device, a reconstruction device through hole is transversely formed in the near section of the main nail body; and the reconstruction device comprises an anchor and a titanium cable. The titanium cable is fixedly connected with the tail end of the anchor; the locking device comprises a locking head and a connecting part; and the two ends of the locking head are of a conical opening structure. The surface of the front end of the connecting part is provided with an external thread structure, and the tail end is of a hollow inner hexagonal structure. A conical hole structure matched with the tail end of the locking head is further arranged in the center of the connecting part. The improved tension bone trabecula reconstruction type proximal femur intramedullary nail has the advantages that the tension bone trabecula of the neck of the femur is reconstructed, and the elastic fixing effect is achieved; meanwhile, the anti-rotation and anti-introversion stress of the femoral head and neck bone block can be enhanced, and good stability can be achieved; and the driving direction of the anchor can be freely adjusted according to different femoral neck diameters of a patient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an improved tension trabecular bone reconstruction type proximal femoral intramedullary nail. Background technique [0002] Trabecular bone is the extension of cortical bone in cancellous bone, that is, trabecular bone is connected with cortical bone, and forms an irregular three-dimensional network structure in the bone marrow cavity. 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 r...

Claims

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Application Information

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IPC IPC(8): A61B17/72A61B17/76
Inventor 王欣程黎明袁锋
Owner SHANGHAI TONGJI HOSPITAL
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