Cytoscope delivery system
First Claim
1. A cystoscope delivery system for implanting a flexible, generally cylindrical, expandable stent, comprising:
- a rigid sheath having distal and proximal ends, said sheath defining a central lumen and at least one secondary lumen extending therethrough and having two longitudinally displaced openings extending from a secondary lumen radially to the surface of the sheath,a cystoscope comprising a distal scope member and a proximal viewing head, the distal scope member extending distally through the central lumen and being removable therefrom,a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said sheath,at least one release wire positioned in and extending through said at least one secondary lumen, andtwo or three restraining means, two of which are positioned at said distal and proximal ends of the stent and each having a restraining member extending over a respective end of the stent, said at least one release wire extending through said openings to hold at least one end of the stent and thus to hold the stent in position, such that when said at least one release wire is pulled proximally, at least one end of the stent is released from the restraining member to permit the stent to expand.
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Accused Products
Abstract
This invention concerns a cystoscope delivery system for implanting a flexible, generally cylindrical, expandable stent. The system comprises a rigid or flexible sheath having distal and proximal ends, the sheath defining a central lumen and at least one secondary lumen extending therethrough and having two longitudinally displaced openings extending from a secondary lumen radially to the surface of the sheath, a rigid cystoscope comprising a distal scope member and a proximal viewing head, the distal scope member extending distally through the central lumen, a flexible, expandable stent having discrete proximal and distal ends, the stent being positioned circumferentially around the sheath, at least one release wire positioned in and extending through the secondary lumen or lumens, and two or three restraining members, two of which are positioned at respective ends of the stent and each having a restraining member extending over a respective end of the stent, the release wire or wires extending through at least one of said openings to hold one or both ends of the stent and thus to hold the stent in position, such that when the release wire or wires are pulled proximally, one or both ends of the stent are released from the restraining members to permit the stent to expand.
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Citations
17 Claims
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1. A cystoscope delivery system for implanting a flexible, generally cylindrical, expandable stent, comprising:
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a rigid sheath having distal and proximal ends, said sheath defining a central lumen and at least one secondary lumen extending therethrough and having two longitudinally displaced openings extending from a secondary lumen radially to the surface of the sheath, a cystoscope comprising a distal scope member and a proximal viewing head, the distal scope member extending distally through the central lumen and being removable therefrom, a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around said sheath, at least one release wire positioned in and extending through said at least one secondary lumen, and two or three restraining means, two of which are positioned at said distal and proximal ends of the stent and each having a restraining member extending over a respective end of the stent, said at least one release wire extending through said openings to hold at least one end of the stent and thus to hold the stent in position, such that when said at least one release wire is pulled proximally, at least one end of the stent is released from the restraining member to permit the stent to expand. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cystoscope delivery system for implanting a flexible, generally cylindrical, expandable stent, comprising:
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an inner sheath having distal and proximal ends, said sheath defining a central lumen and at least one secondary lumen extending therethrough and having a longitudinally displaced opening extending from a secondary lumen radially to the surface of the distal end of the inner sheath, an outer sheath having proximal and distal ends, the outer sheath being rotatably positioned concentric to the inner sheath, the distal end of the outer sheath terminating proximal to the distal end of the inner sheath, the wall of the outer sheath defining a lumen for a release wire, and an opening extending from the lumen radially to the outer surface of the outer sheath, a rigid cystoscope comprising a distal scope member and a proximal viewing head, the distal scope member extending distally through the central lumen and being removable therefrom, a flexible, expandable stent having discrete proximal and distal ends, said stent being positioned circumferentially around the distal end of the inner sheath, a release wire positioned in and extending through said at least one secondary lumen of the inner sheath, a release wire extending through the release wire lumen in the outer sheath, and two restraining means positioned at said distal and proximal ends of the stent and each having a restraining member extending over said distal and proximal ends of the stent, said at least one release wire extending through said openings to hold at least one end of the stent and thus to hold the stent in position, such that when said at least one release wire is pulled proximally, said at least one end of the stent is released from the restraining member to permit the stent to expand, the inner and outer sheaths being capable of holding the stent in a less stressed condition and then, prior to use, the outer sheath being rotated to cause the stent to be stressed and to lower its profile. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification