Taper sleeve type iso-radius contractor for cylindrical reticular stent
A mesh stent and constrictor technology, which is applied to the device of human tubular structure, medical science, blood vessels, etc., can solve the problems of distortion, failure to meet the requirements of biomedical engineering design, non-equal diameter shrinkage of cylindrical mesh stent, etc. , to achieve the effect of good interface performance
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[0022] In this embodiment, the guide tapered track divided into 8 equal parts is taken as an example. The technical scheme and structural features of the cone-sleeve-type cylindrical net-like support equal-diameter shrinker are as follows: There are 8 guiding cone tracks in the cone sleeve 1, and 8 fan-shaped blocks 3 are arranged in the cone track. The cone track and the fan-shaped block It is uniformly and precisely machined, and its external dimensions and center hole dimensions are all set within extremely small tolerances. Both sides of sector block 3 are provided with disc spring groove 12, and disc spring 11 is arranged in disc spring groove 12, and 8 sector blocks 3 under the effect of disc spring 11 force, fit on the taper sleeve guide rail all the time and slide. A push rod 4 and a push piston 5 are respectively arranged at its two ends. In order to ensure that the cylinder mesh support is always in the center of the cylinder surrounded by 8 fan-shaped blocks during...
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