An electronic cryoprobe for cryosurgery using heat pipes and thermoelectric coolers: A preliminary report
作者:
HamiltonA.,
HuJ.,
期刊:
Journal of Medical Engineering&Technology
(Taylor Available online 1993)
卷期:
Volume 17,
issue 3
页码: 104-109
ISSN:0309-1902
年代: 1993
DOI:10.3109/03091909309016215
出版商: Taylor&Francis
数据来源: Taylor
摘要:
A hand-held fully electrically powered and programmable cryoprobe for general-purpose cryosurgery and cryotherapy has been developed. By combining the technologies of thermoelectric cooling and heat pipes, the temperature at the tip of the probe can easily reach -50 to -60°C. It can hold below -40°C when it cools a load of 10 W at the tip. Previous efforts developing cryoprobes made of thermoelectric modules have been hindered by the inherent characteristics of commercially available thermoelectric coolers: low efficiency, sine and inflexible shape and very sensitive to heat intensity and thermal insulation. Matching thermoelectrics with heat pipes uses the advantages of both technologies. In the cryoprobe the heat pipe is used to focus and transport the cooling power of multi-thermoelectric modules. The heat flux for the thermoelectric modules is reduced and their efficiencies are increased. The transport of heat by a heat pipe also allows flexible access to treated spots of patients.
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