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Assembly type artificial sacral prosthesis

A modular and prosthetic technology, applied in the field of medical devices, to achieve the effects of improving internal force distribution, good long-term stability and recovery, and good stress conduction recovery and stability

Pending Publication Date: 2017-12-22
SECOND AFFILIATED HOSPITAL SECOND MILITARY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no response to a modular artificial sacral prosthesis that can achieve precise matching of different tumor resection surfaces of the sacrum, personalized customization, good stress conduction recovery and stability in the lumbosacral area, and is easy to adjust the length and establish a fixed connection with the lumbar spine. public

Method used

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  • Assembly type artificial sacral prosthesis
  • Assembly type artificial sacral prosthesis
  • Assembly type artificial sacral prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Please refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of an assembled artificial sacral prosthesis of the present invention. Please refer to figure 2 , figure 2It is a schematic diagram of the disassembled state of the artificial sacral prosthesis. A modular artificial sacral prosthesis, the modular artificial sacral prosthesis includes a prosthesis main body 1, a first iliac complex 2, and a second iliac complex 21; the prosthesis main body 1 is herringbone (see Figure 5 ); the upper end of the prosthesis main body 1 has a vertebral body contact surface 11 forming a platform, and the vertebral body contact surface 11 is an oval rough surface with toothed protrusions (see Figure 6 ); the first iliac complex 2 and the second iliac complex 21 are connected to the prosthesis main body 1 by knocking and inserting; the first iliac complex 2 or the second iliac complex 21 includes The connecting body 22 and the bone set 23; the bone...

Embodiment 2

[0061] This embodiment is basically the same as Embodiment 1, the difference is that in this embodiment, the embedding block 221 is arranged on the prosthesis main body 1, and the embedding hole 12 is arranged on the connecting body 22, which is the same as in the embodiment. The design of the embedding block 221 and the embedding hole 12 is just opposite. It can be selected according to the needs of assembly.

[0062] A modular sacral prosthesis of the present invention can realize accurate matching of different tumor resection surfaces of the sacrum during sacral reconstruction, personalized customization, good stress conduction recovery and stability in the lumbosacral area, and is convenient for length adjustment and lumbar spine establishment. Fixed connection prevents the lumbar spine from hanging and falling, and can be completely integrated with the tumor resection surface to achieve seamless docking and good long-term stability and recovery; the main body of the prost...

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Abstract

The invention relates to an assembly type artificial sacral prosthesis. The assembly type artificial sacral prosthesis comprises a prosthesis main body, a first sacral combination body and a second sacral combination body; the first sacral combination body and the second sacral combination body are connected with the prosthesis main body in a knocking and inserting manner; the first sacral combination body or the second sacral combination body comprises a connecting body and a bone setting body; each bone setting body is provided with a pore structure; and the first sacral combination body and / or the second sacral combination body is prepared by using a 3D printing technology. The assembly type artificial sacral prosthesis has the advantages that when the sacral bone is rebuilt, the assembly type artificial sacral prosthesis can be accurately matched with different excision faces of sacral tumors due to personalized customization, stress conduction recovery and stability of a lumbosacral portion are good, the length is conveniently adjusted so that the assembly type artificial sacral prosthesis is fixedly connected with the lumbar vertebra, the lumbar vertebra is prevented from hanging in the air and falling off, the assembly type artificial sacral prosthesis can be completely fused with the tumor excision faces, seamless joint is achieved, and long-term stability and recovery are good.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an assembled artificial sacral prosthesis. 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. After resection of the sacral tumor, in order to regain the integrity of the sacrum, various sacral prostheses are used for reconstruction in the prior art. Yet there is following defect and deficiency about the sacrum prosthesis in the prior art: [0003] First of all, when resecting sacral tumors, different patients have different tumor resection ranges, some patients have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/30942A61F2/44A61F2002/30329A61F2002/30433A61F2002/30985A61F2002/448A61F2002/3011
Inventor 肖建如杨兴海龚海熠吴志鹏彭东宇张丹何韶辉胡劲博韩帅
Owner SECOND AFFILIATED HOSPITAL SECOND MILITARY MEDICAL UNIV
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