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Artificial crystalline lens

A technology of sacrum and prosthesis, which is applied in the field of artificial sacral prosthesis, can solve problems such as not being suitable for application occasions, achieve the effects of improving stress conduction, reducing internal fixation loosening, and stable and reliable fixation

Inactive Publication Date: 2007-08-08
杨惠林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The load-bearing part of the ilium connecting rod of this structure is more in line with the biomechanical requirements. However, in order to adapt to the large-area connection structure at both ends, this structure can only be applied to the situation where most of the ilium wings on both sides are removed, and obviously cannot Meet the needs of most applications

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Referring to accompanying drawings 1 to 3, an artificial sacral prosthesis is mainly composed of an ilium connection structure and a lower lumbar pedicle screw-rod system 1. The body 2 of the iliac connection structure is Arched, the central part of the arch is provided with a vertebral bottom support platform 3 that matches the shape and position of the resected lower endplate of the lumbar vertebrae, and the bottom of the vertebral support platform is provided with positioning screw holes 6 from bottom to top; The lower end surface matches the section of the resected sacroiliac joint and is equipped with iliac screws, and the two sides of the arched upper part are respectively provided with a sacral rod 5, and the end of the sacral rod is provided with a connecting part that cooperates with the remaining upper part of the ilium The sacral rod is arc-shaped, and the end of the sacral rod is located on the outside of the ilium to be connected. The connectin...

Embodiment 2

[0025] Embodiment 2: Referring to the accompanying drawing 4, an artificial sacral prosthesis is mainly composed of an ilium connecting structure and a lower lumbar pedicle screw-rod system 1. The body 2 of the ilium connecting structure is rounded, The middle part of the circular arch is equipped with a vertebral support platform 3 that matches the shape and position of the resected lower endplate of the lumbar spine. A sacral rod 5 is respectively arranged on both sides of the upper part of the circular arch, and the end of the sacral rod is provided with a connecting portion that matches the remaining upper part of the ilium; the sacral rod is arc-shaped, and the end of the sacral rod is located On the outer side of the ilium, the connecting part is a hook 7 arranged from the outside to the inside. The shape of the hook matches the upper wing of the ilium, and the hook is provided with a fixing screw hole 8 .

[0026] The body structure of this embodiment is round and arche...

Embodiment 3

[0027] Embodiment 3: An artificial sacral prosthesis mainly consists of an ilium connecting structure and a lower lumbar pedicle screw-rod system. Vertebral bottom supporting platform with matching shape and position of the lower endplate. The lower end surfaces on both sides of the arch match with the section of the resected sacroiliac joint and are provided with iliac screws. The two sides of the upper part of the arch are respectively equipped with a sacral rod, and the sacrum The end of the rod is provided with a connecting portion that matches the remaining upper part of the ilium; the connecting portion on the sacral rod is a hook that is arranged at the end of the sacral rod, and the shape of the hook is matched with the upper wing of the ilium. With fixing screw holes.

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Abstract

The invention relates to an artificial sacrum prosthese, formed by an iliac bone connecting structure and a low lumbar vertebral arch nail rod. The invention is characterized in that the main body of the iliac bone connecting structure is in arc shape, whose middle is arranged with a lumbar bottom support table engaged with the cut lower plate of lumbar; the lower ends of two sides of arc are engaged with the cut sacrum joint and arranged with the iliac bone nail; two upper sides of the arc are arranged with both one sacrum rod whose end is arranged with the connecting part engaged with the upper part of iliac bone. The invention sets the iliac bone connecting structure in arc shape to meet the sacrum physiological structure, to stabilize the basin ring, improve the stress transmission and reduce the nail loosen. When in use, the two side sacrum joint cut are less, to avoid damaging the ear face, to be used to rebuild the basin.

Description

technical field [0001] The invention relates to a prosthesis capable of being transplanted into the body, in particular to an artificial sacral prosthesis for pelvic ring reconstruction after total sacral resection. Background technique [0002] The spine is the central column of the human body, with a complex structure and the functions of bearing weight, maintaining body balance, exercising, protecting the spinal cord and internal organs. The lower part of the spine is the 5 lumbar vertebrae, the sacrum and the coccyx. On the one hand, the sacrum supports the lumbar spine. On the other hand, the sacrum and the two iliums together form the pelvic ring. The stability of the pelvic ring mainly depends on the surrounding soft tissues, including the pubic symphysis, many ligaments in the front and rear of the sacroiliac joint, and the pelvic ring. surface soft tissue. [0003] In sacral tumor surgery, total sacral resection is often required. At present, the internal fixation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61F2/28
Inventor 杨惠林唐天驷吴寅良
Owner 杨惠林
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