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Rigid electronic endoscope

  • US 4,879,992 A
  • Filed: 04/26/1988
  • Issued: 11/14/1989
  • Est. Priority Date: 04/27/1987
  • Status: Expired due to Term
First Claim
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1. A rigid electronic endoscope, comprising:

  • an endoscope having an elongated insertable portion which is connected to a front portion of an operating part, a holding part on an end portion of said endoscope, a solid state imaging means for outputting an electrical signal by electrically converting an object image within said insertable portion, and a sheath means of said insertable portion for forming a conductive shielding means;

    a signal processing means connected to said imaging means, for processing said electrical signal obtained by said endoscope, said signal processing means having a first ground terminal means; and

    an external current source means connected to said signal processing means, said external current source means having a second ground terminal means, said shielding means being connected to said second ground terminal means, wherein said first ground terminal means and said second ground terminal means are isolated from each other for preventing high frequency waves on said sheath means from effecting said electrical signal output of said endoscope.

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