软组织内热治疗针体外温度变化的特点分析

目的研究软组织内热治疗针在体外的温度分布特点，为进一步研究其在体内温度分布打下基础。方法使用数字测温仪测量软组织内热治疗针在设定42％、50％、60％、80％下加热5min、10min、15min、20min时从针尖至针体末端每隔2cm处的温度。结果内热针针身温度分布分3段：针尖温度中等，距针尖2—6cm段温度较高，距针尖10cm到针体末端段温度较低。针尖到针身8cm段温度差别较小，与设定加热温度接近。针尖温度比设定加热温度低1-2℃。针身温度随加热时间的变化波动不明显。结论软组织内热治疗针在体外加热过程中，针身温度容易控制，稳定性好，针尖温度与设定温度接近。

Temperature changes of internal heat needle for treating chronic soft tissue lesion in vitro

Objective To ivsestigate the temperature changes of the internal heat needle for treating chronic soft tissue lesion in vitro, and to lay the base for the further study of its temperature characteristics in vivo. Methods Temperatures of the internal heat needle at four sites underlying 42℃ , 50℃ , 60℃ and 80℃ were measured with a figure-thermodetector when the internal heat needle was heated for 5, 10, 15 and 20 minutes. Results Temperatures of the internal heat needle were divided into three zones. The first zone （temperatures of the tip） was moderate; the second zone （temperatures of the needle body from 2cm to 6cm） was high; and thc Iast zone （temperatures of the needle body from 10cm to the end） was low. Temperatures of the needle body from the tip to gem were average, and were close to that preset. Temperatures of the tip were 1-2℃ lower than that preset. Temperatures of the internal heat needle didn ＇ t fluctuate significantly during heating. Conelusion Temperatures of the internal heat needle are easy to control and steady in vitro. Temperatures of the tip are close to that preset.