Balloon catheter
First Claim
1. A balloon catheter for dilating vascular constrictions and for simultaneously introducing a permanently deformable stent into a vessel to be dilated in order to stabilize the vessel in the dilated condition, wherein a distal region of the catheter, which is intended to receive the stent, comprises:
- an inner tube that is surrounded by the crimped non-expanded stent;
a balloon arranged between the stent and the inner tube;
a pair of longitudinally spaced X-ray marking sleeves carried on the inner tube within the balloon such that the stent is there-between and comprised of an X-ray-opaque material;
an outer tube disposed between the inner tube and the outer balloon and formed of a soft and elastic material as an intermediate layer, with the intermediate layer extending in the longitudinal direction to beyond the sleeves forming the X-ray markings, and together with the sleeves forming the X-ray markings forms an air-tight closure so that an air volume that remains between the inner tube and the outer tube forming the intermediate layer acts as an elastic air cushion which upon crimping of the stent onto the catheter forms a resistance means for controlled displacement of the balloon.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention concerns a balloon catheter (1) for dilating vascular constrictions and for simultaneously introducing a permanently deformable stent (9) into the vessel to be dilated in order to stabilize it in the dilated condition, wherein the distal region of the catheter which is intended to receive the stent has an inner tube (2) which is surrounded by the non-expanded stent, the balloon (7) is arranged between the stent (9) and the inner tube (2) and the inner tube has at its ends as X-ray markings two sleeves (3, 4) which are carried thereon and which comprise an X-ray-opaque material and which are provided within the balloon on the inner tube, wherein provided between the inner tube and the outer balloon is a tube (5) which forms an additional plateau and which comprises a soft-elastic material as an intermediate layer, in such a way that it extends in the longitudinal direction to beyond the sleeves forming the X-ray markings.
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Citations
11 Claims
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1. A balloon catheter for dilating vascular constrictions and for simultaneously introducing a permanently deformable stent into a vessel to be dilated in order to stabilize the vessel in the dilated condition, wherein a distal region of the catheter, which is intended to receive the stent, comprises:
- an inner tube that is surrounded by the crimped non-expanded stent;
a balloon arranged between the stent and the inner tube;
a pair of longitudinally spaced X-ray marking sleeves carried on the inner tube within the balloon such that the stent is there-between and comprised of an X-ray-opaque material;
an outer tube disposed between the inner tube and the outer balloon and formed of a soft and elastic material as an intermediate layer, with the intermediate layer extending in the longitudinal direction to beyond the sleeves forming the X-ray markings, and together with the sleeves forming the X-ray markings forms an air-tight closure so that an air volume that remains between the inner tube and the outer tube forming the intermediate layer acts as an elastic air cushion which upon crimping of the stent onto the catheter forms a resistance means for controlled displacement of the balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- an inner tube that is surrounded by the crimped non-expanded stent;
Specification