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Centrosymmetric conjugation type equidistant constrictor for cylindrical net support

A centrosymmetric, mesh-like stent technology, applied in stents, medical science, prostheses, etc., can solve problems such as twisting and deformation, affecting the quality of stent tightening and assembly, and non-isodiametric shrinkage of cylindrical mesh stents, achieving remarkable results. Effect

Inactive Publication Date: 2008-11-26
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The early technology is a simple hand tool, which is easy to cause non-isometric shrinkage or distortion of the cylindrical mesh stent
Although the fin-type cylindrical mesh bracket equal-diameter shrinker technology developed in the later stage has greatly improved compared with hand tools, there is still tangential stress between the fins and the compressed bracket, which affects the tightening and assembly quality of the bracket. Research new technical principles for further improvement

Method used

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  • Centrosymmetric conjugation type equidistant constrictor for cylindrical net support
  • Centrosymmetric conjugation type equidistant constrictor for cylindrical net support
  • Centrosymmetric conjugation type equidistant constrictor for cylindrical net support

Examples

Experimental program
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Embodiment

[0016] Embodiment: I-type center-symmetrical conjugate cylindrical mesh support isometric shrinker, 12 guide rails are set inside the body 1, 12 fan-shaped sliders 2 are arranged inside the rails, and a control panel is provided on one side of the fan-shaped slider 2. pin, the pin is assembled in the pin groove of the conjugate gear 3; when the conjugate gear 3 rotates clockwise, the 12 sector sliders 2 are synchronously moved centripetally by the force generated by the pin groove of the conjugate gear 3; when the conjugate gear 3 Rotating counterclockwise, the 12 fan-shaped sliders 2 are synchronously centrifugally moved by the force generated by the pin groove of the conjugate gear 3; a supporting plate 7 is arranged on the top of the fan-shaped slider 2, and is fixed on the fan-shaped slider 2 by bolts 8; The fan-shaped slider is always supported upward by the spring 5 located in the groove of the spring 5 of the body 1; the distance ring 6 is assembled on the shaft of the b...

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Abstract

The biomedical engineering device is provided with one main body with n guide tracks, n quadrant blocks, conjugated gears, control pin and other parts. The conjugated gears can rotate clockwise or counterclockwise to make the n quadrant blocks move synchronously and centripetally or centrifugally. The biomedical engineering device has also pallet, spring, distance ring, etc. The present invention has been applied practically.

Description

[0001] Field [0002] The invention relates to a stent retractor, in particular to a center-symmetrical conjugate cylinder mesh stent isometric retractor. Background technique [0003] Human vascular diseases such as coronary artery stenosis, cerebrovascular embolism, and hemangioma have long been treated with drugs or traditional surgery. Since the introduction of biomedical engineering technology, various types of cylindrical mesh stents developed based on biomedical engineering science have been widely used in the treatment of the above diseases and have shown their superior efficacy. In the application of this biomedical engineering technology, an important key technology is to shrink the cylindrical mesh stent isometrically onto the balloon delivery system, so that the cylindrical mesh stent can be accurately delivered to the lesion by using the balloon delivery system, and Position it on the inner wall of the blood vessel. The success of this key technology has a very ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/82A61F2/84A61B17/00A61F2/95
Inventor 董何彦
Owner DALIAN UNIV
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