新型双极止血镊在牛肝中的热对比。
Thermal comparison of novel bipolar forceps in bovine liver.
机构信息
Codman & Shurtleff, Inc, Raynham, Massachusetts, USA.
出版信息
Neurosurgery. 2010 Jul;67(1):160-4; discussion 164-5. doi: 10.1227/01.neu.0000370066.50193.02.
OBJECTIVE
The goal of this work was to determine whether bipolar forceps using a novel heat pipe thermal regulation technology result in decreased thermal damage of untargeted collateral tissue compared with traditional bipolar forceps.
METHODS
Fresh ex vivo bovine livers underwent controlled coagulation with forceps with (n=36) or without (n=36) heat pipe technology. Liver specimens were assessed regarding the extent of thermal injury (heat pipe, n=20; non-heat pipe, n=20). During coagulation, tissue temperatures were measured via thermocouple array thermometry and imaged via infrared camera thermography (heat pipe, n=16; non-heat pipe, n=16).
RESULTS
Forceps using heat pipe technology were associated with less thermal spread and demonstrated mean tissue temperatures 25% lower than observed with non-heat pipe forceps. The mean width, area, and depth of thermal injury were significantly reduced with heat pipe vs traditional forceps.
CONCLUSION
In an ex vivo study of bovine liver bipolar coagulation, forceps that incorporated heat pipe technology limited thermal spread and reduced the extent of unintended injury to untargeted collateral tissue.
目的
本研究旨在确定与传统双极镊相比，采用新型热管热调节技术的双极镊是否能减少非靶向侧支组织的热损伤。
方法
采用（n=36）或不采用（n=36）热管技术的新鲜离体牛肝进行受控凝血。评估肝标本的热损伤程度（热管组 n=20；非热管组 n=20）。在凝血过程中，通过热电偶阵列测温法测量组织温度，并通过红外摄像热成像法（热管组 n=16；非热管组 n=16）进行成像。
结果
使用热管技术的镊与热扩散减少相关，并且与非热管镊相比，组织温度平均降低 25%。与传统双极镊相比，热管组的热损伤的平均宽度、面积和深度显著降低。
结论
在牛肝双极凝血的离体研究中，采用热管技术的镊限制了热扩散并减少了对非靶向侧支组织的意外损伤程度。
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