Patent ID: 7105014

Claim:
A stent delivery system, comprising: an inner member; an expandable balloon mounted in a collapsed state on said inner member, said expandable balloon having a first end and a second end; a compressible stent mounted in a compressed state around said expandable balloon between said first and second ends, said compressible stent in said compressed state having a first diameter; at least a first retainer pillow formed in said expandable balloon at said first end and having a first outer diameter at least substantially equal to said first diameter; and at least a first pillow support member mounted on said inner member for supporting said first retainer pillow to maintain said first outer diameter; said first pillow support member comprising a coiled spring member having a first section of a second diameter for engaging said inner member, and a second section of a third diameter being greater than said second diameter of said first section,for supporting said at least a first retainer pillow.