Stent delivery system
First Claim
1. A stent delivery system, the system comprising:
- a) an inner shaft having a length from a proximal end to a distal end;
b) an outer shaft moveable with respect to the inner shaft, the outer shaft having a proximal end and a distal end;
c) a stent receiving area on the inner shaft adjacent the inner shaft distal end;
d) a tip mounted on the inner shaft distal end;
e) means coupled to the inner shaft and outer shaft for manipulating the outer shaft with respect to the inner shaft;
f) a stent positioned in the stent receiving area; and
g) a spacer assembly disposed between the inner shaft and the outer shaft, said spacer assembly including a channel spacer, extending coaxially along and in contact with a portion of the length of said inner shaft having a plurality of channels spaced about a circumference of said inner shaft and channel spacer combination, wherein said spacer assembly supports said inner shaft with respect to said outer shaft by eliminating slack when said outer shaft is moved with respect to said inner shaft.
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0 Petitions
Accused Products
Abstract
The present invention is a device for delivering a self-expanding stent. The device has an inner and an outer shaft moveable with respect to the inner shaft. The self expanding stent is received on the inner shaft adjacent its distal end. A tapered tip is located on the inner shaft distal end and it forms a smooth transition from the deliver y device to the guide wire extending therethrough. A handle allows the practitioner to deploy the stent single handedly. The stent may have its segments in a first radial configuration for deliver of the stent or the stent may have a plurality of segments in a first radial configuration and a plurality of second segments in a second radial position.
139 Citations
12 Claims
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1. A stent delivery system, the system comprising:
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a) an inner shaft having a length from a proximal end to a distal end;
b) an outer shaft moveable with respect to the inner shaft, the outer shaft having a proximal end and a distal end;
c) a stent receiving area on the inner shaft adjacent the inner shaft distal end;
d) a tip mounted on the inner shaft distal end;
e) means coupled to the inner shaft and outer shaft for manipulating the outer shaft with respect to the inner shaft;
f) a stent positioned in the stent receiving area; and
g) a spacer assembly disposed between the inner shaft and the outer shaft, said spacer assembly including a channel spacer, extending coaxially along and in contact with a portion of the length of said inner shaft having a plurality of channels spaced about a circumference of said inner shaft and channel spacer combination, wherein said spacer assembly supports said inner shaft with respect to said outer shaft by eliminating slack when said outer shaft is moved with respect to said inner shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent delivery system, the system comprising:
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a) an inner shaft having a proximal end and a distal end;
b) an outer shaft moveable with respect to the inner shaft, the outer shaft having a proximal end and a distal end;
c) a stent receiving area on the inner shaft adjacent the inner shaft distal end;
d) a tip mounted on the inner shaft distal end;
e) a knob of a handle coupled to the inner shaft and a housing of said handle coupled to said outer shaft wherein relative motion of said knob with respect to said housing in a slot in said housing causes motion of the outer shaft with respect to the inner shaft;
wherein said knob is rotatably moveable with respect to said handle, when said knob is moveable in a transverse slot, said knob cannot move in a longitudinal slot of said handle, such that said knob must be rotated from a locked position in said transverse slot positioned to prevent unintended initial deployment of a stent positioned at said stent receiving area of said inner shaft.
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Specification