STENT DELIVERY SYSTEM
First Claim
1. A stent delivery system comprising:
- an inner tube opening at a proximal end thereof;
a stent which is disposed on an outer surface of a distal portion of the inner tube while being compressed toward a center axis thereof at the time of insertion into a living body lumen and which can be restored into its pre-compression shape by expanding outward when put indwelling in the living body lumen; and
an outer tube which, by being disposed on an outer surface side of the inner tube, can contain the stent in its lumen and which, by moving proximally relative to the inner tube, can release the stent contained in its inside,wherein a sealing member is provided between the outer tube and the inner tube on a proximal side relative to the stent, and the inner tube is provided, between the sealing member and the stent, with a first opening through which a lumen of the inner tube and the exterior of the inner tube communicate with each other.
1 Assignment
0 Petitions
Accused Products
Abstract
A stent delivery system wherein, in a gap between an inner tube body and an outer tube body, a sealing member is arranged on the proximal side relative to a distal opening of a lumen, which extends from the proximal end of the inner tube body, and a guide wire leading-out hole. The inner circumferential surface of the sealing member is fixed to the outer circumferential surface of a first proximal tube of the inner tube body, and the outer circumferential surface of the sealing member is in sliding contact with the inner circumferential surface of a second proximal tube of the outer tube body. When blood or the like enters into the stent delivery system via the distal ends of the inner tube body and the outer tube body, progress of the blood or the like toward an operating unit side is inhibited by the sealing member.
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Citations
18 Claims
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1. A stent delivery system comprising:
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an inner tube opening at a proximal end thereof;
a stent which is disposed on an outer surface of a distal portion of the inner tube while being compressed toward a center axis thereof at the time of insertion into a living body lumen and which can be restored into its pre-compression shape by expanding outward when put indwelling in the living body lumen; and
an outer tube which, by being disposed on an outer surface side of the inner tube, can contain the stent in its lumen and which, by moving proximally relative to the inner tube, can release the stent contained in its inside,wherein a sealing member is provided between the outer tube and the inner tube on a proximal side relative to the stent, and the inner tube is provided, between the sealing member and the stent, with a first opening through which a lumen of the inner tube and the exterior of the inner tube communicate with each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A stent delivery system comprising:
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an inner tube; an outer tube provided on an outer circumference side of the inner tube, a gap defined between the inner tube and the outer tube being configured to contain an expandable stent; an operating unit connected to the inner tube for moving the outer tube relative to the inner tube to deploy the expandable stent; and a sealing member arranged in the gap between the inner tube and the outer tube; wherein, when blood or other fluid enters into the stent delivery system via an open distal end of the inner tube or of the outer tube, said sealing member prevents the blood or other fluid from spreading to the operating unit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification