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US 6,602,247 B2Granted
Apparatus and method for performing a treatment on a selected tissue region
AssigneeCryoCath Technologies Inc.
InventorJean-Pierre Lalonde
Life of this patent
Estimating the term…
Abstract
A cryogenic catheter includes an outer flexible member having at least one cryogenic fluid path through the flexible member. The at least one fluid path is defined by a plurality of flexible members disposed within the outer flexible member.
Claims33
A medical device having a body comprising:
- a fluid transport member disposed within the body and configured to circulate fluid therein;
- an outer member substantially surrounding the fluid transport member;
- the body having a portion defining a chamber disposed between the outer member and the fluid transport member;
- and
- means to vary a relative distance between the outer member and the fluid transport member.
2 more elements
A medical device comprising:
- a thermally transmissive region;
- and
- an axially off-set fluid path thermally coupled to at least a portion of the thermally transmissive region, wherein the axially off-set fluid path is adjacent to an inner surface of the thermally transmissive region, wherein the axially off-set fluid path includes means for circulating an energetic fluid therein.
A medical device having a body comprising:
- a thermally transmissive region disposed on the surface of the body;
- a rotatable fluid transport member thermally coupled to the thermally transmissive region;
- and
- the rotatable fluid transport member having at least one segment positionable proximal to an inner surface of the thermally transmissive region.
1 more element
A medical device having a body comprising:
- a thermally transmissive region disposed on the surface of the body;
- a support slide disposed within the body and proximal to the thermally transmissive region;
- and
- a flexible fluid transport member slideably mounted to the support slide.
1 more element
A method of treating a selected portion of tissue comprising:
- providing an appropriate medical device having a fluid transport path and a thermally transmissive region disposed therein;
- positioning the medical device within the selected portion of tissue;
- inflating a flexible member substantially surrounding the thermally transmissive region;
- moving the fluid transport path to a selected portion of the flexible member;
- and
- circulating a thermally active fluid within the fluid transport path to deliver a medically effective amount of thermal energy to the selected portion of tissue.
3 more elements
A method of delivering a medically efficacious amount of energy to a selected tissue using a medical device having a thermally transmissive region, an expandable membrane substantially surrounding the thermally transmissive region and a thermal fluid path thermally coupled to the thermally transmissive region comprising:
- positioning at least a portion of the thermally transmissive region adjacent to the selected tissue;
- activating the expandable membrane to compress the selected tissue;
- moving the thermal fluid path to a position proximal to an inner surface of the expandable membrane;
- circulating a thermally active fluid within the thermal fluid path;
- and
- transferring a therapeutic amount of energy to the selected tissue.
3 more elements
A method of treating a tissue comprising:
- providing a medical device having a thermally transmissive region and an axially off-center fluid path thermally coupled to the thermally transmissive region;
- positioning at least a portion of the thermally transmissive region proximal to the tissue to be treated;
- positioning the axially off-center fluid path closest to the portion of the thermally transmissive region proximal to the tissue to be treated;
- and
- circulating an energetic fluid within the axially off-center fluid path.
2 more elements
A method of treating a selected tissue comprising:
- providing a medical device having a thermally transmissive region, an expandable member substantially surrounding the thermally transmissive region and a moveable fluid path thermally coupled to the thermally transmissive region;
- expanding the expandable member against the selected tissue;
- moving the moveable fluid path in a direction towards the selected tissue;
- and
- circulating an energetic fluid within the moveable fluid path to deliver a medically effective amount of thermal energy to the selected tissue.
2 more elements
A method of treating a selected tissue comprising:
- providing a medical device having a body, a fluid transport member disposed within the body, an outer member substantially surrounding the fluid transport member, the body having a portion defining a chamber disposed between the outer member and the fluid transport member;
- and means to vary a relative distance between the outer member and the fluid transport member;
- positioning the medical device to contact the selected tissue;
- expanding the outer member by injecting a bio-compatible fluid into the chamber;
- decreasing the relative distance between the fluid transport member and the outer member until a selected distance is reached;
- and
- injecting a thermally active fluid into the fluid transport member for a medically effective period of time.
4 more elements
A method of treating a selected tissue comprising:
- providing a medical device having a body, a thermally transmissive region disposed on the surface of the body, a fluid transport member thermally coupled to the thermally transmissive region, the fluid transport member having at least one segment positionable proximal to an inner surface of the thermally transmissive region, and means for moving fluid transport member;
- positioning the medical device to contact the selected tissue;
- injecting a thermally active fluid within the fluid transport member;
- and
- moving the fluid transport member in a selected pattern to perform a desired treatment on the selected tissue.
2 more elements
Dependencies are inferred from the claim text.