SLIDING RESTRAINT STENT DELIVERY SYSTEMS
First Claim
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1. A stenting method comprising:
- selecting a stent delivery system from a plurality of such systems,wherein each of the systems comprises a self-expanding stent and a delivery guide, the delivery guide comprising an inner member, an outer sleeve, a stent stop fixed in position relative to the outer sleeve and a distal restraint having a length slidingly disposed over the stent to hold the stent in a collapsed configuration until withdrawal of the restraint to deploy the stent,locating the delivery system so the stent is at a treatment site, andactuating the inner member to withdraw the restraint to release the stent for deployment at the treatment site without axial movement of the stop,wherein a non-selected system would produce axial movement of the stop during stent deployment.
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Abstract
Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures. For such purposes, a self-expanding stent may be deployed in connection with an angioplasty procedure with a sliding restraint based delivery system adapted for simplified use. In the system, the sliding restraint is sized, in coordination with a fixed sleeve accepting a core wire to actuate the restraint to effect an anchoring function with the sleeve so that the stent is not inadvertently advanced during deployment.
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Citations
33 Claims
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1. A stenting method comprising:
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selecting a stent delivery system from a plurality of such systems, wherein each of the systems comprises a self-expanding stent and a delivery guide, the delivery guide comprising an inner member, an outer sleeve, a stent stop fixed in position relative to the outer sleeve and a distal restraint having a length slidingly disposed over the stent to hold the stent in a collapsed configuration until withdrawal of the restraint to deploy the stent, locating the delivery system so the stent is at a treatment site, and actuating the inner member to withdraw the restraint to release the stent for deployment at the treatment site without axial movement of the stop, wherein a non-selected system would produce axial movement of the stop during stent deployment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A stenting system comprising:
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a self-expanding stent; a delivery guide member comprising an inner member, an outer sleeve, a stent stop fixed in position relative to the outer sleeve, and a distal restraint having a length slidingly disposed over the stent to hold the stent in a collapsed configuration until release, wherein withdrawal of the inner member within the sleeve and withdrawal of the restraint or a connection to the restraint from outside of the sleeve to inside of the sleeve releases the stent, and wherein the delivery system does not increase in diameter during or after releasing the stent. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification