发明名称 |
Systems and methods for assembling components of a fabric-covered prosthetic heart valve |
摘要 |
A system and method for assembling a prosthetic heart valve, including a procedure for tightly wrapping fabric around a heart valve support stent having a highly contoured undulating outflow edge. A mandrel retains tension without manual assistance in a tubular length of fabric wrapped over the support stent, and includes relatively axially movable inner and outer clamping mechanisms and a pedestal tube on which the support stent rests. The clamping mechanisms include clamps that pull the fabric only in the support stent cusps. The mandrel assembly may be placed in a chuck of a sewing machine system for automatically forming the seam. A small shuttle with bobbin thread reciprocates within a channel inside of the support stent and cooperates with the sewing machine needle to form a lock-stitch in the fabric tube. The mechanization of the fabric covering procedure greatly enhances manufacturing throughput and reduces ergonomic strain on workers.
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申请公布号 |
US7739971(B2) |
申请公布日期 |
2010.06.22 |
申请号 |
US20050147797 |
申请日期 |
2005.06.07 |
申请人 |
EDWARDS LIFESCIENCES CORPORATION |
发明人 |
CHAMBERS FREEMAN G.;ZYSMAN LAWRENCE J. |
分类号 |
D05B35/00;A61F2/24 |
主分类号 |
D05B35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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