Method of manufacture of a heart valve support frame

Details Method of manufacture of a heart valve support frame Method of manufacture of a heart valve support frame

2008-01-15

2008-01-15

Omgba, Essama (Department: 3726)

Metal working

Method of mechanical manufacture

Valve or choke making

C029S447000, C029S458000, C623S002420, C205S711000, C205S716000, C205S727000

Reexamination Certificate

active

11028878

ABSTRACT:
Methods for forming a support frame for flexible leaflet heart valves from a starting blank include converting a two-dimensional starting blank into the three-dimensional support frame. The material may be superelastic, such as NITINOL, and the method may include bending the 2-D blank into the 3-D form and shape setting it. A merely elastic material such as ELGILOY may be used and plastically deformed in stages, possibly accompanied by annealing, to obtain the 3-D shape. Alternatively, a tubular blank could be formed to define a non-tubular shape, typically conical. A method for calculating the precise 2-D blank shape is also disclosed. A mandrel assembly includes a mandrel and ring elements for pressing the blank against the external surface of the mandrel prior to shape setting.

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