Invention Grant
- Patent Title: Method of increasing stent retention of bioabsorbable scaffolding with a sheath
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Application No.: US15828253Application Date: 2017-11-30
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Publication No.: US10703050B2Publication Date: 2020-07-07
- Inventor: Yunbing Wang , Xiao Ma , Rommel Lumauig
- Applicant: Abbott Cardiovascular Systems Inc.
- Applicant Address: US CA Santa Clara
- Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
- Current Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
- Current Assignee Address: US CA Santa Clara
- Agency: Squire Patton Boggs (US) LLP
- Main IPC: B29C65/56
- IPC: B29C65/56 ; A61F2/958 ; A61F2/915 ; A61F2/95

Abstract:
A medical device includes a polymer stent crimped to a catheter having an expansion balloon. The stent is crimped to the balloon by a process that includes heating the stent to a temperature below the polymer's glass transition temperature to improve stent retention without adversely affecting the mechanical characteristics of the stent when later deployed to support a body lumen. A variable diameter sheath with a central portion that prevents expansion of the stent when the balloon is pressurized and larger diameter ends is disposed over the crimped stent-balloon assembly. The balloon is pressurized and the larger diameter ends of the sheath allow the balloon beyond the ends of the stent to expand. The balloon is then depressurized.
Public/Granted literature
- US20180154585A1 METHOD OF INCREASING STENT RETENTION OF BIOABSORBABLE SCAFFOLDING WITH A SHEATH Public/Granted day:2018-06-07
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