Patent ID: 9636243
Date: 2017-05-02
CPC Classifications: A61F,A61L

Claim:
1. A stent delivery system comprising: an inner tube positioned inside an outer tube, the outer tube possessing a distal end and an inner surface, the inner tube possessing an outer surface and a distal end extending distally beyond the distal end of the outer tube, and a balloon inflation lumen located between the inner surface of the outer tube and the outer surface of the inner tube; a balloon possessing a distal end fixed to a distal end portion of the inner tube and a proximal end fixed to the distal end of the outer tube, the balloon possessing an outer surface and an interior communicating with the balloon inflation lumen located between the inner surface of the outer tube and the outer surface of the inner tube; a hollow cylindrically shaped stent possessing open opposite ends, the stent possessing an inner surface and an outer surface that communicate with one another by way of a plurality of cutouts provided in the hollow cylindrically shaped stent, the stent being expandable and contractable in a radial direction of the hollow cylindrically shaped stent, at least a part of the stent being made of metal, the balloon being positioned inside the hollow cylindrically shaped stent so that the hollow cylindrically shaped stent encircles the balloon; a layer positioned between the outer surface of the balloon and the hollow cylindrically shaped stent, at least a portion of the metal part of the hollow cylindrically shaped stent being bonded to the layer, the layer being formed from at least one compound with a plurality of thiol groups in its molecule, and the outer surface of the balloon supporting the at least one compound with the plurality of thiol groups, and wherein manufacturing the stent delivery system comprises applying the balloon to plasma treatment, followed by subjecting the balloon to heat treatment and followed by applying the layer to modify or activate the outer surface of the balloon to effect a bonding reaction between the at least one compound with a plurality of thiol groups and the outer surface of the balloon.