Reconstruction device of humerus or thighbone near end

A technology of the proximal femur and humerus, which is applied in the field of devices installed in the human body, can solve problems such as bulky, difficult surgery, difficult internal fixation, etc., and achieve the effect of reducing manufacturing costs and saving operation time

Active Publication Date: 2014-01-22
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For C-type fractures with severely comminuted proximal end of the humeral (femoral) shaft, it is difficult to achieve satisfactory reduction with internal fixation and the risk of humeral (femoral) head necrosis is extremely high; elderly patients with severe osteoporosis are difficult to internal fixation and are prone to loosening Leading to treatment failure; tumor lesions with severe bone destruction in the proximal humerus (femur) are accompanied by bone defects of varying degrees, and internal fixation is difficult. Standard joint prosthesis cannot solve the problem of bone defect in the backbone. Bulky, and there are problems such as limited bonding range between the prosthesis and the medullary cavity, and stress concentration
At the same time, the reconstruction effect of the attachment points of important tissues around the joint (joint capsule, tendon, etc.) is directly related to the postoperative function, and the existing prostheses generally lack solutions
[0003] Patients with complex proximal humerus (femur) trauma and bone tumors are difficult to operate, because the surgical failure rate remains high due to equipment problems, and some cases even have to choose amputation due to the lack of suitable treatment methods to reconstruct the limb structure

Method used

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  • Reconstruction device of humerus or thighbone near end
  • Reconstruction device of humerus or thighbone near end
  • Reconstruction device of humerus or thighbone near end

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see Figure 1 to Figure 7 , in this embodiment, the prosthesis is a humeral prosthesis, wherein the prosthetic head includes a humeral head neck 1, the humeral head neck 1 is composed of a humeral head 1-1 and a humeral neck 1-1 connected to the humeral head 1-1. 2. The prosthetic handle includes a humeral stem connected to the humeral neck 1-2.

[0037] see Figure 2 to Figure 7 , the humerus stem includes a humerus stem standard rod 4 and a humerus stem extension rod 3, wherein the upper end of the humerus stem extension rod 3 is connected to the humerus neck 1-2, and the lower end is connected to the humerus stem standard rod 4. The purpose of adopting this scheme is that for ordinary patients, the humeral stem can be used to complete the reconstruction. For some patients, due to bone disease or severe trauma, the proximal humeral bone is severely destroyed, and the humeral stem needs to be extended. At this time, the humerus stem extension rod 3 can be connected t...

Embodiment 2

[0041] see Figure 9 to Figure 15 , in this implementation, the prosthesis is a femoral prosthesis, wherein the prosthesis head includes a femoral head and neck 5, and the femoral head and neck 5 includes a femoral head and neck body 5-1 and a connection on the femoral head and neck body 5-1. Device 5-2; said prosthetic stem includes a femoral stem 8 .

[0042] see Figure 10 ~ Figure 15 , the femoral head neck 5 and the femoral stem 8 are connected by a rotating posture-adjusting structure. The alveolar 5-4, the upper end of the femoral stem 8 is connected with an adapter 6, the upper end of the adapter 6 is provided with a cylindrical adjustment shaft, and the outer wall of the adjustment shaft is evenly distributed with the alveolar 5-4 Matching locking teeth 6-2; the adjusting shaft is inserted into the adjusting hole, and the locking teeth 6-2 are embedded between two adjacent tooth slots 5-4. The adapter 6 is provided with a via hole 6-3 with a rectangular cross secti...

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Abstract

The invention discloses a reconstruction device of a humerus or a thighbone near end. The reconstruction device comprises a prosthesis and a titanium cage, wherein the prosthesis comprises a combined prosthesis head and a prosthesis handle; the titanium cage is arranged outside the prosthesis handle, and the upper end of the titanium cage is connected with the prosthesis head. When the prosthesis is a humerus prosthesis, the prosthesis head comprises a humerus head and neck, and the humerus head and neck is formed by a humerus head and a humerus neck connected with the humerus head; the prosthesis handle comprises a humerus handle connected with the humerus neck; when the prosthesis is a prosthesis on the upper middle section of a thighbone, the prosthesis head comprises a thighbone head and neck, and the prosthesis handle comprises a thighbone handle. According to the reconstruction device, not only can the humerus or the thighbone near end be replaced and shoulder joints or hip joints be constructed, but also reconstruction for the defect after bone tumours of the humerus or the thighbone near end are removed can be achieved, and the reconstruction device is suitable for reconstruction of severely smashed C-shaped fracture conditions of humerus (thighbone) backbone near ends.

Description

technical field [0001] The invention relates to a device installed in the human body, in particular to a reconstruction device for the proximal end of the humerus or femur. Background technique [0002] The treatment of proximal humerus (femur) fractures and bone tumors currently mainly adopts three methods: proximal humerus (femur) nail-plate system, intramedullary nail system reduction and internal fixation, and artificial joint prosthesis replacement. For C-type fractures with severely comminuted proximal end of the humeral (femoral) shaft, it is difficult to achieve satisfactory reduction with internal fixation and the risk of humeral (femoral) head necrosis is extremely high; elderly patients with severe osteoporosis are difficult to internal fixation and are prone to loosening Leading to treatment failure; tumor lesions with severe bone destruction in the proximal humerus (femur) are accompanied by bone defects of varying degrees, and internal fixation is difficult. St...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/30A61F2/40A61F2/32
CPCA61F2/40A61F2002/30001
Inventor 潘锐洪丰佘国荣董军查振刚
Owner JINAN UNIVERSITY
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