Flexible catheter cryosurgical system

Details Flexible catheter cryosurgical system Flexible catheter cryosurgical system

1999-04-07

2000-03-14

Capossela, Ronald

Refrigeration

Hand manipulable tool

62 507, 62 512, 165 81, 165164, 606 21, F25D 300

Patent

active

06035657&

ABSTRACT:
A microminiature laminated heat exchanger for use in a cryogenic probe, and a method of manufacture. The heat exchanger has high and low pressure flow patterns etched into oxygen free copper sheets, with the flow patterns being tortuous paths promoting turbulent flow. The sheets containing the flow patterns are bonded into a laminated assembly in the shape of a cylinder, with a high pressure inlet and a low pressure outlet in a first end, and a high pressure outlet and a low pressure inlet in a second end. The high pressure flow path lies alongside the low pressure flow path, with flow in the two paths being in opposite directions, to accomplish counterflow heat exchange.

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