Intra vascular implant and method of manufacture thereof
AssigneeShelhigh, Inc.
InventorShlomo Gabbay
Life of this patent
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Abstract
An implant (10) includes an expandable, flexible membrane (18) mounted over an expandable stent (12), which is releasably affixed to the balloon portion (14) of a catheter (16). The balloon (14) is inflated, thereby enlarging both the stent (12) and the membrane (18). Thereafter, the balloon (14) is deflated and the catheter (16) removed, leaving the stent (12) and membrane (18) in place. The implant (100) may also include an outer stent (106), surrounding a secured membrane (104).
Claims26
A method of making an implant for a circulatory system of a warm blooded animal, said method comprising steps of:
- surrounding at least part of an inert cylinder with a flexible tubular membrane;
- twisting said membrane about a longitudinal axis of said inert cylinder, whereby an internal diameter of said membrane is reduced by the step of twisting;
- treating said twisted membrane cylinder with glutaraldehyde to produce a tanned membrane;
- removing said inert cylinder from said tanned membrane;
- and
- placing said tanned membrane around an expandable inner stent.
An implant for introduction into a circulation system of a warm blooded animal comprising:
- an expandable stent;
- a tubular membrane, compatible with the warm blooded animal, mounted about said stent, said membrane having a sidewall portion twisted relative to an axis extending longitudinally through said membrane to facilitate radial expansion of said membrane and said stent.
An implant for introduction into a circulatory system of a warm blooded animal comprising:
- an inner expandable stent adapted to surround a balloon portion of a catheter;
- a membrane surrounding at least a portion of said inner stent and affixed thereto, said membrane having been fixed into an expandable configuration with glutaraldehyde to provide a tanned membrane;
- and
- an outer expandable stent surrounding said membrane.
Dependencies are inferred from the claim text.