Shielding structure of electronic endoscope apparatus
US5569158A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1994 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Sep 27, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K9/0064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A shielding structure of an electronic endoscope apparatus which can sufficiently remove noise even when an electric cautery is used. A signal transmission cable which connects a charge coupled device disposed at the end portion of an electronic endoscope to a processor unit is electrically shielded by a double shield composed by an inner shield and an outer shield. The inner shield is connected to the ground in a light source connector and the outer shield is connected to the frame ground of the processor unit through a capacitor. The outer shield is further connected to a shielding member provided around the charge coupled device and a patient ground to which an electrode piece of an electric cautery is connected. Noise is greatly removed, so that the picture quality is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.