LOW PROFILE AGENT DELIVERY PERFUSION CATHETER HAVING REVERSIBLY EXPANDING FRAMES
First Claim
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1. A catheter for delivering an agent to an inner surface of a patient'"'"'s body lumen wall, comprising:
- a) an elongated shaft having a distal shaft section and an agent delivery lumen which is in fluid communication with an agent delivery distal port in the distal shaft section;
b) a proximal frame and a distal frame on the distal shaft section which reversibly radially expand from a collapsed to a radially expanded configuration, each frame having a proximal end, a distal end, at least one skirt section mounting the frame on the distal shaft section, and a plurality of struts forming a body with a conical end section; and
c) a tubular membrane extending from the proximal to the distal frame, having a proximal end section secured to the proximal frame, a distal end section secured to the distal frame, a central section therebetween, an outer surface, and an inner surface defining a perfusion channel extending in the tubular membrane with the frames in the expanded configuration, and which has the shaft extending in the perfusion channel, and the agent delivery lumen extends across the membrane from the inner towards the outer surface thereof, so that the catheter is configured to deliver an agent to an agent containment pocket which extends along the inner surface of the patient'"'"'s body lumen wall along an outer surface of the central section of the membrane.
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Abstract
An agent delivery catheter and method, configured to deliver an agent to an inner surface of a patient'"'"'s body lumen by forming an agent containment pocket along the inner surface of the patient'"'"'s body lumen wall between a proximal expandable frame and a distal expandable frame, while minimizing ischemic conditions during the procedure.
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Citations
16 Claims
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1. A catheter for delivering an agent to an inner surface of a patient'"'"'s body lumen wall, comprising:
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a) an elongated shaft having a distal shaft section and an agent delivery lumen which is in fluid communication with an agent delivery distal port in the distal shaft section; b) a proximal frame and a distal frame on the distal shaft section which reversibly radially expand from a collapsed to a radially expanded configuration, each frame having a proximal end, a distal end, at least one skirt section mounting the frame on the distal shaft section, and a plurality of struts forming a body with a conical end section; and c) a tubular membrane extending from the proximal to the distal frame, having a proximal end section secured to the proximal frame, a distal end section secured to the distal frame, a central section therebetween, an outer surface, and an inner surface defining a perfusion channel extending in the tubular membrane with the frames in the expanded configuration, and which has the shaft extending in the perfusion channel, and the agent delivery lumen extends across the membrane from the inner towards the outer surface thereof, so that the catheter is configured to deliver an agent to an agent containment pocket which extends along the inner surface of the patient'"'"'s body lumen wall along an outer surface of the central section of the membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of performing a medical procedure, comprising
a) introducing within a patient'"'"'s body lumen a catheter comprising i) an elongated shaft having a distal shaft section and an agent delivery lumen which is in fluid communication with an agent delivery distal port in the distal shaft section; -
ii) a proximal self-expanding frame and a distal self-expanding frame on the distal shaft section which reversibly radially self-expand from a collapsed to a radially expanded configuration upon removal of a radially restraining force, each frame having a proximal end, a distal end, at least one skirt section mounting the frame on the distal shaft section, and a plurality of struts forming a body with a conical end section; and iii) a tubular membrane extending from the proximal to the distal frame, having a proximal end section secured to the proximal frame, a distal end section secured to the distal frame, a central section therebetween, an outer surface, and an inner surface defining a perfusion channel extending in the tubular membrane with the frames in the expanded configuration, and which has the shaft extending in the perfusion channel, and the agent delivery lumen extends across the membrane from the inner towards the outer surface thereof; b) radially self-expanding each frame by removing the radially restraining force therefrom to thereby force the proximal and distal end sections of the membrane against an inner surface of the patient'"'"'s body lumen; and c) delivering an agent from the agent delivery lumen to an agent containment pocket which extends along the inner surface of the patient'"'"'s body lumen wall along an outer surface of the central section of the membrane. - View Dependent Claims (14, 15, 16)
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Specification