Improvement of electrode materials for bipolar forceps in neurosurgery

神经外科双极钳电极材料的改进

• 批准号: 04555165
• 负责人: HOMMA Motofumi
• 金额: $ 3.07万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555165/
• 关键词: Bipolar forceps; Al_2O_3 dipersion Cu alloy; Au-20%Cu-5%Ag alloy; Au-20%CU-5%Ag合金; 止血; 電極材料; Al_2O_3分散合金; 脳外科手術; 銅合金

A bipolar forceps is used to check the bleeding by electrical coagulation in neurosurgery. It is important to prevent a sticking of tissues on the electrodes of the bipolar forceps. It has been found in our previous studies that the sticking is caused by the reaction between the electrode metals and carbon in tissues, and that Cu and Ag electrodes are able to prevent the sticking. However, the hardness of Cu, Ag metals and Cu-Ag alloys are too low to be fine shape electrodes. The hardness of Al_2O_3 dispersion Cu alloys and Au-Cu-Ag alloys have been measured. A 0.3%Al_2O_3 dipersion Cu alloy and a Au-20%Cu-5%Ag alloy consisting of CuAu order structures showed hardness Hv 170 and 300, respectively. The both alloy electrodes roasted the meats without the sticking.The bipolar forceps with their alloy lelectrodes are undergoing clinical testing for neurosurgery.

双极钳在神经外科中用于电凝检查出血。防止组织粘在双极钳的电极上是很重要的。我们在前期的研究中发现，这种粘附是由电极金属与组织中的碳发生反应引起的，而Cu和Ag电极能够防止这种粘附。然而，Cu、Ag金属和Cu-Ag合金的硬度太低，不能作为细形状电极。测定了Al_2O_3弥散型Cu合金和Au-Cu-Ag合金的硬度。0.3%Al_2O_3弥散Cu合金和由CuAu有序结构组成的Au-20%Cu-5%Ag合金的硬度分别为Hv 170和300。两个合金电极在烤肉时都不会粘肉。带有合金电极的双极钳正在进行神经外科的临床试验。