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US 5,591,172 AGranted
Transluminal implantation device
AssigneeAMS Medinvent S.A.
InventorsMichel Bachmann, Robert Nissels
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AssigneeAMS Medinvent S.A.
InventorsMichel Bachmann, Robert Nissels
Estimating the term…
A device for transluminal implantation of a substantially tubular, radially expansible stent. The device includes a central tube surrounded by an outer tube axially displaceable relative to the central tube, with the radial dimensions of the tubes being such as to form an annular space therebetween capable of accommodating the stent in an unexpanded state. The outer tube is axially displaceable relative to the central tube. In one embodiment of the device, the central tube, at a distal end thereof, is provided with a section of reduced diameter at the proximal end of which there is an undercut groove forming a circumferential flange within which a proximal end of the stent rests until release of the stent by rearward displacement of the outer tube. In a modification of the device, the central tube, at its distal end, includes a sleeve slidably positioned therearound for capturing at least a proximal portion of the stent restraining the proximal portion against movement until stent deployment.
A transluminal implantation device comprising a central tube surrounded by an outer tube axially displaceable relative to said central tube, the tubes being sized to form an annular space therebetween capable of accommodating a stent in an unexpanded state, said central tube having a distal end and further including sleeve means slidably positioned around and located proximate the distal end of said central tube and adapted for capturing at least a proximal portion of said stent restraining the proximal portion of said stent against movement, said sleeve means further including releasable latching means comprising at least one member being biased into engagement with a recess in said central tube and coacting with said outer tube for maintaining said sleeve in a first position, wherein said outer tube includes means for releasing said latching means and for engaging said sleeve for rearward sleeve movement and stent release, and means for axial displacement of said outer tube and said sleeve relative to said central tube, wherein the proximal portion of said stent is adapted to remain stationary until release thereof by rearward displacement of said sleeve and said outer tube whereupon the stent becomes fully deployed.
Dependencies are inferred from the claim text.