SIDE VIEWING ENDOSCOPE SYSTEM
First Claim
1. A side viewing endoscope system comprising:
- a mother endoscope of a side viewing type in which an endoscopic observation means having an illumination portion and an observation portion is disposed on a side surface of a rigid distal end portion of an insertion section, a instrument rising chamber installed of a instrument riser member for rising up or sinking down of a treatment instrument is formed in said rigid distal end portion, a biopsy channel provided through an axial direction of said insertion section being communicated with said instrument rising chamber;
a daughter endoscope having a slender insertion section being inserted into said biopsy channel of said mother endoscope and having a viewing field in a forward direction of said distal end of said slender insertion section;
a perforation window foil led at said rigid distal end portion of said mother endoscope and having a viewing field toward the forward direction of said biopsy channel; and
said distal end portion of said daughter endoscope being introduced through said biopsy channel at a position to face said perforation window but not to be protruded from the outer surface of said rigid distal end of said mother endoscope.
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Abstract
A side viewing endoscope system is discloses that a mother endoscope of a side viewing type provided an endoscopic observation means is disposed on a side surface of a rigid distal end portion, a instrument rising chamber installed of a instrument riser member for rising up or sinking down of a treatment instrument in the rigid distal end portion, a biopsy channel provided through an axial direction of the insertion section being communicated with said instrument rising chamber, a daughter endoscope having a slender insertion section being inserted into the biopsy channel and having a viewing field in a forward direction of the distal end of the slender insertion section, a perforation window formed at the rigid distal end portion and having a viewing field of the forward direction of the biopsy channel, and the distal end portion being introduced through the biopsy channel at a position not to be protruded from the outer surface of the rigid distal end.
76 Citations
16 Claims
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1. A side viewing endoscope system comprising:
a mother endoscope of a side viewing type in which an endoscopic observation means having an illumination portion and an observation portion is disposed on a side surface of a rigid distal end portion of an insertion section, a instrument rising chamber installed of a instrument riser member for rising up or sinking down of a treatment instrument is formed in said rigid distal end portion, a biopsy channel provided through an axial direction of said insertion section being communicated with said instrument rising chamber; a daughter endoscope having a slender insertion section being inserted into said biopsy channel of said mother endoscope and having a viewing field in a forward direction of said distal end of said slender insertion section; a perforation window foil led at said rigid distal end portion of said mother endoscope and having a viewing field toward the forward direction of said biopsy channel; and said distal end portion of said daughter endoscope being introduced through said biopsy channel at a position to face said perforation window but not to be protruded from the outer surface of said rigid distal end of said mother endoscope. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
Specification