Catch member for PFO occluder
First Claim
1. A collapsible medical device for occluding an aperture in a body, the medical device having a first configuration as a reduced profile and a second configuration as an expanded profile, the medical device being adapted to be delivered through a delivery system into a desired delivery location, the medical device comprising:
- an occluder portion movable between the first and the second configuration, wherein the occluder portion comprises a proximal end and proximal portion having a proximal axial passage therethrough with an inner diameter, a distal end and a distal portion having a distal axial passage therethrough with an inner diameter, and an central tube having a central axial passage therethrough with an inner diameter between the proximal end and the distal end;
a catch member adapted to be disposed in the axial passages of the occluder portion, wherein the catch member comprises a catch body having an outer surface;
a proximal section comprising a proximal collapsible tip, a proximal ridge adjacent the proximal collapsible tip and a slot disposed at the proximal collapsible tip to render it collapsible; and
a distal section comprising a distal flange;
wherein the distal flange of the catch member engages the distal end of the occluder portion,wherein the catch body has a tapered or graduated cylindrical profile composed of the distal section having a first outer diameter D1 and the proximal section having a second outer diameter D2 joined by a sloped section,wherein diameter D2 is similar to the inner diameter of the proximal axial passage of the occluder portion; and
,wherein the proximal tip is adapted for connection to a delivery system; and
the proximal ridge is adapted to pass through the proximal axial passage of the occluder portion while the proximal collapsible tip is held in a collapsed position to enable delivery and deployment of the occluder.
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Accused Products
Abstract
Delivery (and recovery) devices and techniques for delivering an implant into a desired location within the body and catch systems for such implants. The devices and techniques relate particularly to, but are not limited to, a patent foramen ovale (PFO) occluder made from a polymer tube. A catch system maintains an occluder in a deployed configuration by holding it in a reduced axial length position. Some embodiments have a compressible tip. Some embodiments have temporary catching mechanisms.
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Citations
4 Claims
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1. A collapsible medical device for occluding an aperture in a body, the medical device having a first configuration as a reduced profile and a second configuration as an expanded profile, the medical device being adapted to be delivered through a delivery system into a desired delivery location, the medical device comprising:
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an occluder portion movable between the first and the second configuration, wherein the occluder portion comprises a proximal end and proximal portion having a proximal axial passage therethrough with an inner diameter, a distal end and a distal portion having a distal axial passage therethrough with an inner diameter, and an central tube having a central axial passage therethrough with an inner diameter between the proximal end and the distal end; a catch member adapted to be disposed in the axial passages of the occluder portion, wherein the catch member comprises a catch body having an outer surface;
a proximal section comprising a proximal collapsible tip, a proximal ridge adjacent the proximal collapsible tip and a slot disposed at the proximal collapsible tip to render it collapsible; and
a distal section comprising a distal flange;wherein the distal flange of the catch member engages the distal end of the occluder portion, wherein the catch body has a tapered or graduated cylindrical profile composed of the distal section having a first outer diameter D1 and the proximal section having a second outer diameter D2 joined by a sloped section, wherein diameter D2 is similar to the inner diameter of the proximal axial passage of the occluder portion; and
,wherein the proximal tip is adapted for connection to a delivery system; and
the proximal ridge is adapted to pass through the proximal axial passage of the occluder portion while the proximal collapsible tip is held in a collapsed position to enable delivery and deployment of the occluder. - View Dependent Claims (2, 3, 4)
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Specification