Luminal stenting
First Claim
1. A method of operating a stent delivery system within a vessel of a patient, comprising:
- positioning a catheter in the vessel, the catheter having a lumen defining an axis extending between a proximal end and a distal end, such that the catheter distal end is at a treatment site;
positioning a core assembly within the catheter lumen, the core assembly having (i) an elongate member comprising a distal section, (ii) a stent having a distal portion and being carried along the elongate member, and (iii) a distal cover coupled to the member distal section and extending proximally, the core assembly being positioned within the lumen such that the elongate member distal section is positioned axially adjacent the catheter distal end with at least a portion of the distal cover extending in a space within the lumen radially between the elongate member distal section and the catheter distal end;
moving the catheter relative to the core assembly to permit expansion of the stent distal portion, the expansion urging the distal cover away from the elongate member; and
recapturing the core assembly into the catheter by moving the core assembly relative to the catheter such that the elongate member distal section is positioned axially adjacent to the catheter distal end with the distal cover positioned out of the space and extending distally.
1 Assignment
0 Petitions
Accused Products
Abstract
A stent delivery system, a core assembly, and methods of operating the same are provided. The delivery system can comprise a catheter and the core assembly. The core assembly can comprise a constraining member, protruding member, a core member, and a stent extending along the core member. The tubular constraining member can be spaced apart from the core member and define a capture area. The protruding member can be disposed along the core member at least partially distal of the capture area. The stent can have a first portion disposed within the capture area and a second portion, distal to the first portion, extending across or over an outer surface of the protruding member so that the protruding member and the constraining member cooperate to inhibit expansion of the first portion of the stent.
216 Citations
24 Claims
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1. A method of operating a stent delivery system within a vessel of a patient, comprising:
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positioning a catheter in the vessel, the catheter having a lumen defining an axis extending between a proximal end and a distal end, such that the catheter distal end is at a treatment site; positioning a core assembly within the catheter lumen, the core assembly having (i) an elongate member comprising a distal section, (ii) a stent having a distal portion and being carried along the elongate member, and (iii) a distal cover coupled to the member distal section and extending proximally, the core assembly being positioned within the lumen such that the elongate member distal section is positioned axially adjacent the catheter distal end with at least a portion of the distal cover extending in a space within the lumen radially between the elongate member distal section and the catheter distal end; moving the catheter relative to the core assembly to permit expansion of the stent distal portion, the expansion urging the distal cover away from the elongate member; and recapturing the core assembly into the catheter by moving the core assembly relative to the catheter such that the elongate member distal section is positioned axially adjacent to the catheter distal end with the distal cover positioned out of the space and extending distally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a stent delivery system within a blood vessel of a patient, comprising:
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positioning a catheter in the vessel, the catheter having a lumen extending between a proximal end and a distal end, such that the catheter distal end is at a treatment site; advancing a core assembly distally within the catheter, the core assembly having (i) a distal section, (ii) a distal cover extending from the distal section, and (iii) a stent having a distal portion and being carried by the core assembly, the core assembly being advanced within the catheter such that the distal cover extends proximally from the distal section; moving the catheter relative to the core assembly to permit expansion of the stent distal portion, the expansion urging the distal cover radially away from the core assembly; and recapturing the core assembly into the catheter by moving the core assembly relative to the catheter such that the distal cover extends distally through an annular space between the distal section and the catheter. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of operating a stent delivery system within a vessel of a patient, comprising:
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positioning a catheter in the vessel, the catheter having a lumen defining an axis extending between a proximal end and a distal end, such that the catheter distal end is at a treatment site; positioning a core assembly within the catheter lumen, the core assembly having (i) an elongate member comprising a distal section, (ii) a self-expanding stent having a distal portion and being carried by the elongate member, and (iii) a distal cover having first and second ends, the first end coupled to the member distal section, the second end extending proximally from the member distal section to be radially interposed between the catheter and the stent distal portion without exerting a substantial radial constraining force on the stent; and moving the catheter relative to the core assembly to permit expansion of the stent distal portion thereby causing the second end of the distal cover to move radially without substantially constricting stent expansion and permitting movement of the second end distally beyond the first end. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification