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Adjustable self-stabilizing type artificial sacrum prosthesis

A self-stabilizing and adjustable technology, used in spinal implants and other directions, can solve the problems of large surgical trauma, high infection probability, loosening and other problems, and achieve the effect of promoting osteocyte generation, promoting lower limb function recovery, and promoting bone fusion.

Inactive Publication Date: 2015-04-29
BEIJING AKEC MEDICAL
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The invention provides an adjustable self-stabilizing artificial sacral prosthesis to solve the poor treatment effects of the existing screw-rod reconstruction or bone graft reconstruction such as postoperative loosening, fracture, rejection and poor fusion, and the conventional sacral prosthesis. The surgical trauma during prosthesis implantation is relatively large, and implantation is also very difficult. It is difficult to reset the iliac crest, and the risk of postoperative infection is relatively high.

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  • Adjustable self-stabilizing type artificial sacrum prosthesis
  • Adjustable self-stabilizing type artificial sacrum prosthesis
  • Adjustable self-stabilizing type artificial sacrum prosthesis

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Embodiment Construction

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0020] figure 1 A schematic diagram of the mechanism of the adjustable self-stabilizing artificial sacral prosthesis of the present invention is shown in . The adjustable self-stabilizing artificial sacral prosthesis is composed of three parts, the left auricular joint prosthesis (1), the right auricular joint prosthesis (2), and the prosthesis main body (3); and the prosthesis main body (3) The length can be adjusted through the adjusting nut (4) to adapt to different anatomical and physiological data, and realize the implantation of the prosthesis with small trauma and small incision. The screw hole (5) is used for the adjustable self-stabilizing artificial sacrum The body is fixed on the double-layer ilium, and the nail-rod fixing hole (6) is us...

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Abstract

The invention provides an adjustable self-stabilizing type artificial sacrum prosthesis which is arranged between lumbar vertebra and left and right ilia to replace physiological sacrum. The adjustable self-stabilizing type artificial sacrum prosthesis comprises a prosthesis body, and left and right ear shaped joint fusion surfaces which are respectively arranged at two sides of the prosthesis body to be respectively clung to the ear-shaped surfaces of the left and right ilia; a main body nut is used for adjusting the length of the sacrum prosthesis. The adjustable self-stabilizing type artificial sacrum prosthesis has the main advantages that the joint fusion surface are arranged at two sides of the artificial sacrum prosthesis body and are respectively connected and fused with physiological sacrum, and therefore, the osteocyte is promoted to develop quickly, the sacralization is accelerated, the functions of sacrum are covered, and as a result, the purpose of stably reconstructing lumbosacral sacroiliac joints can be achieved.

Description

technical field [0001] The invention relates to an orthopedic surgery implant, in particular to an adjustable self-stabilizing artificial sacrum prosthesis replacing the natural sacrum. Background technique [0002] The sacrum is an important link in the transition from the spine to the pelvis. It plays an extremely important role in supporting the spine, maintaining the stability of the pelvis, transmitting physiological loads from the upper part of the body, and bearing external weights. Sacral tumors account for a certain proportion of spinal tumors, and surgical resection is currently the main method for the treatment of sacral tumors. The design of conventional sacral prosthesis is relatively large, the surgical trauma is relatively large, the implantation is also very difficult, and the probability of postoperative infection is relatively high. However, due to the special location of the sacrum, the operation is difficult, and because the lumbosacral and sacroiliac jo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
Inventor 李健
Owner BEIJING AKEC MEDICAL
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