Catheter with improved temperature response
AssigneeBiosense Webster (Israel) Ltd.
InventorChristopher Thomas Beeckler
Life of this patent
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Abstract
A medical probe, consisting of an insertion tube having a distal end configured for insertion into a body of a patient and containing a lumen having an electrical conductor for conveying electrical energy. The probe also has a conductive cap attached to the distal end of the insertion tube and coupled electrically to the electrical conductor, the cap including a side wall having multiple longitudinal bores therein. There are a plurality of thermocouples disposed in respective ones of the longitudinal bores, and an electrically conductive cement at least partially fills the longitudinal bores so as to secure the thermocouples in the bores while making electrically conductive contact between the thermocouples and the conductive cap.
Claims9
A method for constructing a medica probe, the method comprising:
- forming a longitudinal cylindrical bore extending through a thickness of a wall of a conductive cap that is configured to be attached to a distal end of an insertion tube configured for insertion into a body of a patient, wherein the insertion tube contains a first lumen having an electrical conductor for conveying electrical energy;
- constructing a trifilar assembly comprising:
- three wires, each insulated with insulating material, wherein the insulating material of the three wires are physically connected along a length to form the trifilar assembly;
- forming a first thermocouple junction at a first position along the length of the three wires by exposing a first wire and a second wire of the three wires each at the first position and soldering the first and second wires together at the first position;
- forming a second thermocouple junction at a second position along the length of the three wires by exposing a third wire and the second wire of the three wires each at the second position and soldering the third and second wires together at the second position, wherein the first position is other than the second position;
- and
- inserting the trifilar assembly within the longitudinal cylindrical bore.
Dependencies are inferred from the claim text.