发明名称 |
Noise suppressor for electronic endoscope |
摘要 |
A noise suppressor is provided for an electronic endoscope which incorporates a diathermic cutter or an ultrasonic diagnosis system. The electronic endoscope utilizes a solid-state camera, and in order to prevent noises from being superimposed upon the signal fed to an image display, a transmission line which transmits a high frequency current to the diathermic cutter or a transmission line which transmits an ultrasonic signal to or receives an ultrasonic signal from an ultrasonic probe is shielded by a conductor member. In particular, for a transmission line which conveys the high frequency current, impedance regulating means is connected therewith in order to prevent the high frequency current from leaking through a distributed capacitance between the transmission line and the conductor member. Alternatively, a narrow bandpass filter may be provided which limits the frequency band of the high frequency current. A coaxial cable may be used in which both the transmission line and the conductor member are formed of conductive rubber.
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申请公布号 |
US4615330(A) |
申请公布日期 |
1986.10.07 |
申请号 |
US19840645308 |
申请日期 |
1984.08.29 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
NAGASAKI, TATSUO;FUJIMORI, HIROYOSHI |
分类号 |
A61B1/05;A61B8/12;A61B18/12;(IPC1-7):A61B1/00 |
主分类号 |
A61B1/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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