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US 2009/0157043 A1Published application
Low profile agent delivery perfusion catheter having a funnel shaped membrane
AssigneeAbbott Cardiovascular Systems Inc.
InventorsMichael J. Leonard, Binh T. Nguyen
Life of this patent
Estimating the term…
Abstract
An agent delivery catheter and method configured to deliver an agent to an inner surface of a patient's body lumen wall by forming a funnel shaped agent containment chamber around at least one portion of the inner surface of the body lumen wall, while minimizing ischemic conditions during the procedure.
Claims18
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 frame fixedly mounted to the distal shaft section which reversibly radially expands from a collapsed to a radially expanded configuration against the patient's body lumen wall, having a proximal end, a distal end, and a radially expandable body section between the proximal and distal ends of the frame;
- and
- c) at least one funnel shaped membrane having a mouth secured to the body section of the frame so that the mouth of the membrane reversibly radially expands with the frame away from the shaft, and a relatively narrower base fixedly secured to the shaft at the agent delivery distal port so that an inner surface of the membrane defines a chamber in fluid communication with the agent delivery lumen, and a longitudinal axis oriented substantially perpendicular to a longitudinal axis of the shaft at said distal port, such that the entire mouth of the membrane engages a portion of the patient's body lumen wall in the expanded configuration to thereby expose the portion of the wall to agent delivered from the shaft agent delivery lumen and contained within the chamber of the membrane.
1 more element
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 frame fixedly mounted to the distal shaft section which reversibly radially expands from a collapsed to a radially expanded configuration, having a proximal end, a distal end, and a radially expandable body section therebetween;
- and
- iii) at least one funnel shaped membrane having a mouth secured to the body section of the frame so that the mouth of the membrane reversibly radially expands with the frame away from the shaft, and a relatively narrower base fixedly secured to the shaft at the agent delivery distal port so that the inner surface of the membrane defines a chamber in fluid communication with the agent delivery lumen, and a longitudinal axis oriented substantially perpendicular to a longitudinal axis of the shaft at said distal delivery port;
- b) radially expanding the frame against an inner surface of a wall of the patient's body lumen at a desired location in the body lumen such that the entire mouth of the membrane engages a portion of the patient's body lumen wall;
- and
- c) delivering an agent from the agent delivery lumen to the chamber of the membrane, to thereby expose the portion of the wall to agent delivered from the shaft and contained within the chamber of the membrane in the expanded configuration.
5 more elements
Dependencies are inferred from the claim text.