Invention Grant
- Patent Title: Highly retractable intravascular stent conveying system
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Application No.: US15312837Application Date: 2015-05-19
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Publication No.: US10292848B2Publication Date: 2019-05-21
- Inventor: Xiaoyan Shawn Gong , Xiang Zhou , Guanhua Xue , Weikun Zhou , Pengchong Qiu
- Applicant: SUZHOU INNOMED MEDICAL DEVICE CO., LTD.
- Applicant Address: CN Suzhou, Jiangsu
- Assignee: SUZHOU INNOMED MEDICAL DEVICE CO., LTD.
- Current Assignee: SUZHOU INNOMED MEDICAL DEVICE CO., LTD.
- Current Assignee Address: CN Suzhou, Jiangsu
- Agency: K&L Gates LLP
- Agent Louis C. Cullman; Brian J. Novak
- Priority: CN201410215596 20140521
- International Application: PCT/CN2015/079270 WO 20150519
- International Announcement: WO2015/176643 WO 20151126
- Main IPC: A61F2/95
- IPC: A61F2/95 ; A61F2/962 ; A61F2/966 ; A61M25/00 ; A61M25/01

Abstract:
A highly retractable intravascular stent delivery system, including a tube assembly and a rotation driving assembly. The tube assembly includes an outer tube 5, an intermediate tube 6, and inner tube 7, wherein an intravascular stent 3 and a stent retaining block 4 are provided within the outer tube 5. The rotation driving assembly includes a housing 9, an outer screw 19, and an intermediate screw 14 located within the housing 9, as well as a driving member. The driving member allows two screws to rotate at opposite directions, so as to drive the outer tube 5 to move toward the proximal end, and the intermediate tube 6 pushes the stent retaining block 4 and the intravascular stent 3 to move toward the distal end. The system uses three-lay tube structure and uses driving gear to drive two screws to move at directions opposite to each other, such that the intermediate tube 6 and the outer tube 5 are driven to move to directions opposite to each other. Therefore, the axial retraction of the intravascular stents can be effectively offset and axial movement of the intravascular stents due to axial retraction of the intravascular stents is avoided, thereby accurately implanting the stents into the body.
Public/Granted literature
- US20170172773A1 HIGHLY RETRACTABLE INTRAVASCULAR STENT CONVEYING SYSTEM Public/Granted day:2017-06-22
Information query
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