DELIVERY SYSTEM HAVING STENT RETENTION STRUCTURE
First Claim
1. A drainage stent delivery system comprising:
- a drainage stent including a generally non-expandable tubular member having a proximal end, a distal end and a central longitudinal axis; and
an elongate shaft extending distally from a handle assembly to a location distal of the proximal end of the drainage stent, the elongate shaft including a portion configured to form an interference fit with the drainage stent;
wherein the portion of the elongate shaft configured to form an interference fit with the drainage stent is in contact with an exterior surface of the drainage stent;
wherein the drainage stent is longitudinally moveable relative to the elongate shaft to effect disengagement of the drainage stent from the portion of the elongate shaft configured to form an interference fit with the drainage stent.
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Accused Products
Abstract
A drainage stent delivery system including an elongate shaft of a medial device, a drainage catheter or stent, and an interference fit member for selectively coupling the drainage stent to the elongate shaft. The drainage stent is selectively coupled to a distal portion of the elongate shaft by an interference fit between the interference fit member and the drainage stent such that axial movement of the elongate shaft relative to the drainage stent moves the interference fit member from a first position in which the interference fit member is engaged with the drainage stent and forms an interference fit with the drainage stent to a second position in which the interference fit member is disengaged from the drainage stent.
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Citations
20 Claims
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1. A drainage stent delivery system comprising:
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a drainage stent including a generally non-expandable tubular member having a proximal end, a distal end and a central longitudinal axis; and an elongate shaft extending distally from a handle assembly to a location distal of the proximal end of the drainage stent, the elongate shaft including a portion configured to form an interference fit with the drainage stent; wherein the portion of the elongate shaft configured to form an interference fit with the drainage stent is in contact with an exterior surface of the drainage stent; wherein the drainage stent is longitudinally moveable relative to the elongate shaft to effect disengagement of the drainage stent from the portion of the elongate shaft configured to form an interference fit with the drainage stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A drainage stent delivery system comprising:
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a handle assembly; a push catheter extending distally from the handle assembly, the push catheter having a lumen extending therethrough; a guide catheter positioned in the lumen of the push catheter, the guide catheter being longitudinally actuatable relative to the push catheter; a drainage stent including a generally non-expandable tubular member having a proximal end, a distal end and a lumen extending therethrough along a central longitudinal axis; wherein a proximal end region of the drainage stent extends into the lumen of the push catheter to form an interference fit with the push catheter; wherein the guide catheter is longitudinally moveable relative to the push catheter to effect disengagement of the drainage stent from the push catheter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification