Individualized artificial half joint substitute and its preparing method

A technology of articular surfaces and substitutes, applied in joint implants, joint implants, etc., can solve problems such as difficult to solve individual replacement, damage to limb development ability, unfavorable rehabilitation and functional recovery, etc., so as to facilitate postoperative rehabilitation and functional recovery, resolution of articular cartilage necrosis, and good results in physiological reconstruction

Inactive Publication Date: 2004-03-10
XI AN JIAOTONG UNIV +1
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Problems solved by technology

[0002] There are two methods of artificial joint substitutes used in the prior art: one method is bilateral total replacement of artificial joints, which removes the undamaged articular surface on the opposite side, increases the scope of surgery, and is not conducive to postoperative rehabilitation and function Recovery, especially for young patients in the developing...

Method used

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  • Individualized artificial half joint substitute and its preparing method
  • Individualized artificial half joint substitute and its preparing method
  • Individualized artificial half joint substitute and its preparing method

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Embodiment Construction

[0023] The accompanying drawing is one of the embodiments of the present invention.

[0024] Below in conjunction with accompanying drawing, content of the present invention will be further described:

[0025] refer to figure 1 Shown, flow chart is exactly the preparation method of the present invention, carries out according to the following steps successively:

[0026] a. Use the patient's healthy side joints to perform CT scans to obtain bone tissue image data;

[0027] b. Using image processing technology, image data is mirror-symmetrically processed, image segmentation is performed based on the gray level difference between soft tissue and bone in the CT image, and contour data is extracted to obtain articular cartilage and bone contour data;

[0028] c. Input the obtained bone contour data into reverse software or CAD software for three-dimensional reconstruction of the articular bone surface;

[0029] d. Design biological connectors and intramedullary nail coupling p...

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Abstract

A substitute of personalized artificial semi-facies articularis is composed of semi-articulation body, bioconnector, connecting pile for intramedullary needle, and locator for operation. An artificial articulation is prepared through CT scanning to articulation of patient, image processing, 3D reconfigurating by software, designing semi-articulation body, designing said bioconnector, connecting pile and locating die, fast shaping to obtain prototype, precise fusion casting, and assembling.

Description

1. Technical field [0001] The invention relates to bone and joint repair in the medical industry. 2. Background technology [0002] There are two methods of artificial joint substitutes used in the prior art: one method is bilateral total replacement of artificial joints, which removes the undamaged articular surface on the opposite side, increases the scope of surgery, and is not conducive to postoperative rehabilitation and function Recovery, especially for young patients in the developing period, the damage to the epiphysis caused by osteotomy will destroy the developmental ability of the limbs; another method is to use allogeneic bone transplantation, which has articular surface necrosis and poor matching of the articular surface after operation. Thereby affecting the recovery of joint function. The above methods are difficult to solve individual replacement. 3. Contents of the invention [0003] The invention object of the present invention is to provide a kind of u...

Claims

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Application Information

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IPC IPC(8): A61F2/30
Inventor 李涤尘王臻孙明林卢秉恒张虎腾勇
Owner XI AN JIAOTONG UNIV
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