Vein occlusion assessment using temperature
AssigneeMedtronic CryoCath LP
InventorsDan WITTENBERGER, Rachid MAHROUCHE
Life of this patent
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Abstract
A medical system, comprising an ablation catheter is disclosed. The ablation catheter includes an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end. The ablation catheter also includes an expandable element in fluid communication with the lumen, a first temperature sensor operable to measure a first temperature; and a second temperature sensor operable to measure a second temperature. The first temperature sensor and the second temperature sensor are longitudinally separated from each other by at least a portion of the expandable element.
Claims20
A medical system, comprising:
- an ablation catheter including:
- an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end;
- an expandable element in fluid communication with the lumen;
- a first temperature sensor operable to measure a first temperature;
- and
- a second temperature sensor operable to measure a second temperature, the first temperature sensor and the second temperature sensor being longitudinally separated from each other by at least a portion of the expandable element.
A method of assessing vein occlusion with an ablation catheter, the ablation catheter including:
- an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end;
- and an expandable element in fluid communication with the lumen;
- the method comprising:
- measuring a first temperature using a first temperature sensor;
- and
- measuring a second temperature using a second temperature sensor, the first temperature sensor and the second temperature sensor being longitudinally separated from each other by at least a portion of the expandable element.
A medical system, comprising:
- an ablation catheter including:
- an elongate shaft with a proximal end, a distal end and a lumen disposed between the proximal end and the distal end;
- an expandable element in fluid communication with the lumen;
- a first temperature sensor operable to measure a first temperature;
- and
- a second temperature sensor operable to measure a second temperature, the first temperature sensor and the second temperature sensor being longitudinally separated from each other by at least a portion of the expandable element;
- and
- a control unit operable to:
- deliver a continuous flow of inflation fluid to the expandable element;
- and
- determine an extent of occlusion in a blood vessel when the expandable element is inserted within the blood vessel and inflated, the determining being based at least in part on a temperature differential between the first temperature and the second temperature.
Dependencies are inferred from the claim text.