INTRAVASCULAR MEDICAL DEVICE HAVING A READILY COLLAPSIBLE COVERED FRAME
First Claim
1. A device having an expandable frame configured for reversibly expanding in a patient'"'"'s body lumen, comprising:
- a) an elongated shaft having a distal shaft section; and
b) an expandable frame on the distal shaft section, configured to radially collapse from an expanded configuration as a recovery catheter is slidably advanced over the expanded frame, having a plurality of struts, a proximal end, a distal end, and a sleeve fixedly secured to the struts with an open first end forming a sleeve mouth located between the proximal and distal ends of the frame and an opposite end such that the frame has a first longitudinal section along which the sleeve does not extend and a second longitudinal section along which the sleeve does extend, and having at least one sleeve-folding strut which extends at least along at least a part of the first longitudinal section of the frame, and which has a larger outer diameter in the expanded configuration than strut portions circumferentially adjacent thereto, to radially collapse prior to the circumferentially adjacent strut portions and thereby fold the sleeve inwardly as the frame radially collapses.
1 Assignment
0 Petitions
Accused Products
Abstract
An elongated intravascular device having a frame configured for reversibly expanding in a patient'"'"'s body lumen, which has a sleeve secured to the frame, and at least one sleeve-folding strut configured to fold the sleeve inwardly as the frame radially collapses in the patient'"'"'s body lumen. Additional aspects of the invention are directed to methods of recovering such expanded frame type devices, and a recovery catheter configured for collapsing an expanded frame. The devices and methods of the invention facilitate the collapse of expanded frame devices, for repositioning or removal from the patient'"'"'s body lumen.
44 Citations
20 Claims
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1. A device having an expandable frame configured for reversibly expanding in a patient'"'"'s body lumen, comprising:
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a) an elongated shaft having a distal shaft section; and b) an expandable frame on the distal shaft section, configured to radially collapse from an expanded configuration as a recovery catheter is slidably advanced over the expanded frame, having a plurality of struts, a proximal end, a distal end, and a sleeve fixedly secured to the struts with an open first end forming a sleeve mouth located between the proximal and distal ends of the frame and an opposite end such that the frame has a first longitudinal section along which the sleeve does not extend and a second longitudinal section along which the sleeve does extend, and having at least one sleeve-folding strut which extends at least along at least a part of the first longitudinal section of the frame, and which has a larger outer diameter in the expanded configuration than strut portions circumferentially adjacent thereto, to radially collapse prior to the circumferentially adjacent strut portions and thereby fold the sleeve inwardly as the frame radially collapses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An agent delivery catheter having a self-expanding frame configured for reversibly expanding in a patient'"'"'s body lumen, comprising:
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a) an elongated shaft having a distal shaft section, and an agent delivery lumen extending therein to an agent delivery port in the distal shaft section; and b) a self-expanding frame on the distal shaft section, configured to radially collapse from an expanded configuration as a recovery catheter is slidably advanced over the expanded frame, having a plurality of struts, a proximal end, a distal end, and a solid-walled sleeve fixedly secured to the struts with an open proximal end forming a sleeve mouth located between the proximal and distal ends of the frame and a distal end, such that the frame has a first longitudinal section along which the sleeve does not extend and a second longitudinal section along which the sleeve does extend, and having a least one sleeve-folding strut which extends at least along at least a part of the first longitudinal section of the frame, and which has a larger outer diameter in the expanded configuration than strut portions circumferentially adjacent thereto, to radially collapse prior to the circumferentially adjacent strut portions and thereby fold the sleeve inwardly as the frame radially collapses. - View Dependent Claims (13)
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14. A catheter system configured for reversibly deploying in a patient'"'"'s body lumen, comprising:
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a) a device comprising an elongated shaft, and a self-expanding frame on a distal shaft section, the frame being configured to reversibly transform from a collapsed configuration to an expanded configuration, and the frame has a plurality of struts, a proximal end, a distal end, and a sleeve fixedly secured to the struts with an open proximal end located between the proximal and distal ends of the frame and a distal end, such that the frame has a first longitudinal section along which the sleeve does not extend and a second longitudinal section along which the sleeve does extend, and having a least one sleeve-folding strut which extends at least along at least a part of the first longitudinal section of the frame and which has a larger outer diameter in the expanded configuration than strut portions circumferentially adjacent thereto, to radially collapse prior to the circumferentially adjacent strut portions and thereby fold the sleeve inwardly as the frame radially collapses; and b) a recovery catheter slidably disposed on the device elongated shaft, having a distal recovery section with a porous wall configured to be slidably advanced over the expanded frame to thereby radially collapse the frame from the expanded to the collapsed configuration and allow fluid flow through the porous wall.
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- 15. A recovery catheter, comprising an elongated shaft which has a single lumen extending to a distal port at an open distal-most end of the recovery catheter and dimensioned for slidably advancing over a device having a reversibly expandable frame to thereby collapse the expanded frame to a collapsed configuration, and which has distal recovery section, and a porous wall along at least a portion of the distal recovery section of the shaft with a porosity configured to allow fluid forced by pressurization through the porous wall as the frame is collapsed into the recovery section of the shaft, wherein the porosity is sufficiently small such that the porous wall has sufficient column strength for collapsing the frame, and the lumen has an inner diameter that does not decrease from the porous portion to the distal-most end of the recovery catheter.
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18. A method of recovering a device having an elongated shaft and an expanded frame on a distal shaft section configured for reversibly transforming from a radially expanded configuration to a collapsed configuration in a patient'"'"'s body lumen, comprising:
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a) slidably advancing a recovery catheter over the device to position an end of the recovery catheter adjacent to the radially expanded frame, the frame having a plurality of struts, a proximal end, a distal end, and a sleeve fixedly secured to the struts with an open first end located between the proximal and distal ends of the frame and an opposite end, such that the frame has a first longitudinal section along which the sleeve does not extend and a second longitudinal section along which the sleeve does extend, and having a least one sleeve-folding strut which extends at least along at least a part of the first longitudinal section of the frame, and which has a larger outer diameter in the expanded configuration than strut portions circumferentially adjacent thereto; and b) collapsing the frame by slidably disposing the first longitudinal section of the frame within the recovery catheter, such that the sleeve-folding strut contacts and is radially collapsed by the recovery catheter prior to the circumferentially adjacent strut portions, to thereby fold the sleeve inwardly as the frame radially collapses. - View Dependent Claims (19, 20)
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Specification