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Upper cervical vertebra bearing type reconstruction prosthesis

A load-bearing, prosthetic technology, used in prosthesis, medical science, spinal implants, etc., to achieve the effect of favorable bone ingrowth, good resistance to pullout and anti-rotation, and stable reconstruction

Pending Publication Date: 2018-06-15
SECOND AFFILIATED HOSPITAL SECOND MILITARY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, there is an urgent need for a cervical reconstruction prosthesis that can be used for the atlantoaxial spine, which can increase the contact surface between the prosthesis and the cervical spine, form an effective support, and facilitate bone ingrowth. This cervical reconstruction prosthesis has not been reported

Method used

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  • Upper cervical vertebra bearing type reconstruction prosthesis
  • Upper cervical vertebra bearing type reconstruction prosthesis
  • Upper cervical vertebra bearing type reconstruction prosthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A preferred embodiment of the present invention, such as Figure 1~3 As shown, the upper cervical spine load-bearing reconstruction prosthesis includes a prosthesis main body 1 and a matching part 2. The prosthesis main body 1 includes a horizontal part 11 and a vertical part 12. 11 is vertically connected, the horizontal part 11 is smoothly connected with the vertical part 12, the horizontal part 11 and the vertical part 12 are integrally formed, the matching part 2 is arranged outside the lower end of the vertical part 11, the matching part 2 and the vertical part 12 are smoothly connected, and the matching part 2 It is integrally formed with the vertical part 11.

[0051] The prosthesis main body 1 is "T" shaped, and the prosthesis main body 1 is a solid prosthesis.

[0052] The horizontal part 11 is provided with two fixing holes 111. The fixing holes 111 are arranged symmetrically on both sides of the front end of the horizontal part 11. The fixing holes 111 are o...

Embodiment 2

[0068] A preferred embodiment of the present invention, such as Figure 8-9 As shown, the upper cervical spine load-bearing reconstruction prosthesis includes a prosthesis main body 1 and a matching part 2. The prosthesis main body 1 includes a horizontal part 11 and a vertical part 12. 11 is vertically connected, the horizontal part 11 is smoothly connected with the vertical part 12, the horizontal part 11 and the vertical part 12 are integrally formed, the matching part 2 is arranged outside the lower end of the vertical part 11, the matching part 2 and the vertical part 12 are smoothly connected, and the matching part 2 It is integrally formed with the vertical part 11.

[0069] The prosthesis main body 1 is in the shape of a "T", and the prosthesis main body 1 is a hollow prosthesis. The middle part of the prosthesis main body 1 is provided with a bone graft hole 13, and the bone graft hole 13 runs through the lower middle part of the vertical part 12 to the upper middle p...

Embodiment 3

[0084] A preferred embodiment of the present invention, such as Figure 10-11 As shown, the upper cervical spine load-bearing reconstruction prosthesis includes a prosthesis main body 1 and a matching part 2. The prosthesis main body 1 includes a horizontal part 11 and a vertical part 12. 11 is vertically connected, the horizontal part 11 is smoothly connected with the vertical part 12, the horizontal part 11 and the vertical part 12 are integrally formed, the matching part 2 is arranged outside the lower end of the vertical part 11, the matching part 2 and the vertical part 12 are smoothly connected, and the matching part 2 It is integrally formed with the vertical part 11.

[0085] The prosthesis main body 1 is a hollow prosthesis, and the middle part of the prosthesis main body 1 is provided with a bone graft hole 13 penetrating through.

[0086] The left and right ends of the transverse part 11 protrude upwards, the transverse part 11 is in the shape of a semi-concave sph...

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Abstract

The invention relates to an upper cervical vertebra bearing type reconstruction prosthesis. The prosthesis comprises a prosthesis body and a fitting part. The prosthesis body comprises a horizontal part and a vertical part, the vertical part is disposed in the middle of the lower end of the horizontal part and vertically connected with the horizontal part, the horizontal part is provided with twofixing holes, and the fixing holes are symmetrically formed in the left and right sides of the front end of the horizontal part. The fixing holes are obliquely upward through holes and run through thefront end and upper end of the horizontal part, and the fitting part is disposed at the lower end of the vertical part and provided with at least one fitting hole. The prosthesis has the advantages that by using a bearing type fixing mode, the prosthesis can perform reconstruction of the occipital neck after atlantoaxial resection, and the problem that only the reconstruction of parts below the dentata can be performed in a traditional method is solved. The contact surface between the upper end of the prosthesis and the anterior arch of atlas or the skull base is large, an effective support is formed, and long-term complications such as sinking displacement are avoided. The surface of the prosthesis is provided with a sponge-like micropore structure, so that the fusion of the prosthesis and adjacent bones is facilitated.

Description

technical field [0001] The invention relates to the technical field of internal fixation and reconstruction of the spinal column, in particular to an upper cervical vertebra load-bearing reconstruction prosthesis. Background technique [0002] The human cervical spine is composed of seven vertebrae, of which the two uppermost ones connected to the base of the skull are the atlas and the axis. Between the atlantoaxial and the human skull, a ball is placed on top of a triangular spire, so that the head can bend forward and backward, bend left and right, rotate left and right, and the circular movement formed by the above movements, but it also makes the atlantoaxial Become the most unstable and fragile fulcrum in the cervical spine. In addition, in the transverse foramen of the atlantoaxial vertebrae, there is the branch of the largest artery supplying blood to the base of the brain - the vertebral artery. [0003] There are a variety of tumors involving the vertebral body i...

Claims

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Application Information

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IPC IPC(8): A61F2/44
CPCA61F2/30749A61F2/30767A61F2/44A61F2002/30593A61F2002/30838A61F2002/30172
Inventor 杨兴海肖建如龚海熠张丹许炜吴志鹏矫健袁博文
Owner SECOND AFFILIATED HOSPITAL SECOND MILITARY MEDICAL UNIV
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