Electronic endoscope with grounded spirally-wound lead wires
First Claim
1. An electronic endoscope apparatus comprising:
- an electronic endoscope having an insertion portion including a solid-state image pickup element; and
a plurality of external devices including at least a light source device for supplying an illumination light to the electronic endoscope and a video processor for processing an electrical signal which is transmitted from the solid-state image pickup element of said electronic endoscope to produce a video signal,wherein an electrical connection portion for electrically connecting said electronic endoscope and said video processor is provided on a connector portion which is provided at one end of one of a universal cord and a signal cable, one of which contains a signal line connecting said electronic endoscope and said video processor,wherein said electronic endoscope apparatus is provided with an electromagnetic interference countermeasure member which covers at least one of said connector portion, said universal cord, said signal line and said external devices,wherein said signal line transmits an electrical signal which is photoelectrically changed by the image pickup element provided at a forward end of said endoscope insertion portion, and lead wires having different diameters are spirally wound around said signal line, andwherein one end of said lead wires is connected to a video ground of said video processor and another end of said lead wires is connected to a video ground of said image pick-up element.
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Accused Products
Abstract
An electronic endoscope apparatus provided with an electronic endoscope having arranged thereon a solid-state image pickup element at an insertion portion, and external devices such as a light source device for supplying an illumination light to the electronic endoscope, a video processor for processing an electrical signal transmitted from the solid-state image pickup element of the electronic endoscope to produce a video signal. An electrical connection portion for electrically connecting the electronic endoscope and the video processor is provided at a connector portion which is provided at an end of a universal cord which connects the electronic endoscope and the light source device. An electromagnetic interference countermeasure member is provided which covers at least one of the connector portion, the universal cord and the external devices. A dual shield around a signal line is also provided which includes spirally-wound lead wires having different diameters and ends connected to video ground.
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Citations
9 Claims
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1. An electronic endoscope apparatus comprising:
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an electronic endoscope having an insertion portion including a solid-state image pickup element; and a plurality of external devices including at least a light source device for supplying an illumination light to the electronic endoscope and a video processor for processing an electrical signal which is transmitted from the solid-state image pickup element of said electronic endoscope to produce a video signal, wherein an electrical connection portion for electrically connecting said electronic endoscope and said video processor is provided on a connector portion which is provided at one end of one of a universal cord and a signal cable, one of which contains a signal line connecting said electronic endoscope and said video processor, wherein said electronic endoscope apparatus is provided with an electromagnetic interference countermeasure member which covers at least one of said connector portion, said universal cord, said signal line and said external devices, wherein said signal line transmits an electrical signal which is photoelectrically changed by the image pickup element provided at a forward end of said endoscope insertion portion, and lead wires having different diameters are spirally wound around said signal line, and wherein one end of said lead wires is connected to a video ground of said video processor and another end of said lead wires is connected to a video ground of said image pick-up element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification