Endoscope
First Claim
Patent Images
1. An endoscope comprising:
- an insert having a distal end portion to be inserted in an area to be observed, said distal end portion of the insert having an observation window, and said insert having a first channel therein which has a first distal end opening portion directed toward a space exterior to the endoscope and through which a first operating tool may be passed;
a second channel arranged along an axial direction of the insert, said second channel having a second distal end opening portion directed toward the space exterior to the endoscope and through which a second operating tool may be passed;
wherein said second distal end opening portion of the second channel is formed at a position retracted from the observation window toward a proximal end of the insert.
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Accused Products
Abstract
The present invention provides an endoscope having an opening of a channel tube retracted from a distal end face having an observation window of the insert therein toward a proximal end side. When a plurality of polyps are removed, a picked-up polyp is moved back from the distal end face of the insert toward the proximal side of the insert in order for the picked-up polyp not to interfere with observation by the endoscope and operation by a cutting tool extending through the endoscope channel.
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Citations
25 Claims
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1. An endoscope comprising:
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an insert having a distal end portion to be inserted in an area to be observed, said distal end portion of the insert having an observation window, and said insert having a first channel therein which has a first distal end opening portion directed toward a space exterior to the endoscope and through which a first operating tool may be passed; a second channel arranged along an axial direction of the insert, said second channel having a second distal end opening portion directed toward the space exterior to the endoscope and through which a second operating tool may be passed; wherein said second distal end opening portion of the second channel is formed at a position retracted from the observation window toward a proximal end of the insert. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An endoscope comprising:
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an insert having a distal end to be inserted in an area to be observed, said distal end portion of the insert having an observation window, a channel arranged along an axial direction of the insert, said channel having a distal end opening directed toward a space exterior to the endoscope and through which an operating tool for picking up a foreign body may be passed; wherein said distal end opening of the channel is retracted from the observation window toward a proximal end of the insert. - View Dependent Claims (25)
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Specification