Self-expanding braided stent and conveying device thereof

• Main Authors: CHEN SHUGUO, CHENG ZENGBING, LI FENG, DANG JUN
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2019
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

The invention relates to a self-expanding braided stent and a conveying device thereof. Specifically, the present invention provides the self-expanding braided stent, and the length of the stent before release is 1.82-2.22 times the length of the stent after release; the axial shortening ratio of the stent is 45-55%; and the braiding angle of the stent is 90-140 degree. The invention also providesthe conveying device for conveying the stent. The self-expanding braided stent of the invention avoids the elongated release of the stent from the design angle, and a stent push tube moves to the farend during the stent release process, thereby compensating for the axial shortening amount after the stent is released, improving the patency rate after the braided stent is implanted, and improvingthe therapeutic effect of the stent. 本发明涉及种自膨胀式编织支架及其输送装置。具体的，本发明提供种自膨胀式编织支架，所述支架释放前的长度为支架释放后长度的1.82-2.22倍；所述支架的轴向短缩率为45-55％；所述支架的编织角度为90-140°。本发明同时提供了种用于输送所述支架的输送装置。本发明的自膨胀式编织支架从设计角度避免了支架被拉长释放，支架在释放过程中支架推送管向远端移动，从而补偿了支架释放后的轴向短