Transluminal implantation or extraction device
First Claim
1. A device for transluminal extraction or implantation of a substantially tubular, radially expansible stent, comprising a central tube having a periphery and being surrounded by an exterior tube axially displaceable relative to said central tube, and a plurality of axially extending gripping members attached to said central tube at a distal end thereof, each of said gripping members having a distal end, said gripping members being substantially evenly distributed around the periphery of said central tube and adapted for outward expansion of their distal ends when said central tube is displaced relative to said exterior tube said gripping members being arranged in at least two concentric sets, with a first set being radially displaced relative to a second set to substantially cover one or more gaps between adjacent gripping members of said first and second sets when in an expanded position, said sets of gripping members thereby forming a substantially closed distal end periphery when in said expanded position permitting a substantially continuous circumferential engagement about at least a portion of said stent.
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Accused Products
Abstract
A device for transluminal extraction or implantation of a substantially tubular, radially expansible stent. The device includes a central tube surrounded by an exterior tube axially displaceable relative to the central tube and a plurality of axially extending gripping members coupled to the central tube at a distal end thereof. The gripping members are substantially evenly distributed around the periphery of the central tube and capable of outward expanding action of their distal ends when the central tube is displaced relative to the exterior tube. The gripping members are arranged in at least two concentric sets with a first set being radially displaced relative to a second set so as to substantially cover the gaps between adjacent gripping members of the first and second sets when in an expanded position. The sets of gripping members form a substantially closed distal end periphery when in the expanded position permitting a substantially continuous circumferential engagement around the stent.
234 Citations
10 Claims
- 1. A device for transluminal extraction or implantation of a substantially tubular, radially expansible stent, comprising a central tube having a periphery and being surrounded by an exterior tube axially displaceable relative to said central tube, and a plurality of axially extending gripping members attached to said central tube at a distal end thereof, each of said gripping members having a distal end, said gripping members being substantially evenly distributed around the periphery of said central tube and adapted for outward expansion of their distal ends when said central tube is displaced relative to said exterior tube said gripping members being arranged in at least two concentric sets, with a first set being radially displaced relative to a second set to substantially cover one or more gaps between adjacent gripping members of said first and second sets when in an expanded position, said sets of gripping members thereby forming a substantially closed distal end periphery when in said expanded position permitting a substantially continuous circumferential engagement about at least a portion of said stent.
Specification