Endoscope apparatus provided with endoscope insertion aid
First Claim
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1. An electronic endoscope comprising:
- an endoscope including an elongated inserting section and an inserting end portion provided at the leading end of said inserting section and having a leading end surface provided with an illuminating window through which illuminating light is projected onto an object to be observed and an observation window for receiving light reflected from said object for the purposes of observation;
an optical adapter having a first optical element which is detachably mounted on a first mounting portion provided on the outer periphery of said inserting end portion and mounted in opposed relationship with said illuminating window and a second optical element mounted in opposed relationship with said observation window;
an endoscope insertion aid capable of being mounted on a second mounting portion provided on the outer periphery of said inserting section which is disposed rearwardly of said first mounting portion of said inserting end section, said endoscope insertion aid projecting outwardly from the outer periphery of said inserting section so as to aid said inserting section to be inserted; and
means for preventing said endoscope insertion aid from coming off, said means being formed such that its minimum effective inner diameter does not exceed the maximum effective inner diameter of said optical adapter.
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Abstract
In an endoscope apparatus, an optical end adapter is detachably attached to the end portion of an elongated inserting section, and an endoscope insertion aid is detachably provided which has the minimum diameter which is smaller than the maximum outer diameter of the optical end adapter. The endoscope insertion aid is fitted onto the inserting section from the leading end thereof, and then the optical end adapter is attached. It is, accordingly, possible to positively prevent the endoscope insertion aid from coming off the optical adapter.
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Citations
17 Claims
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1. An electronic endoscope comprising:
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an endoscope including an elongated inserting section and an inserting end portion provided at the leading end of said inserting section and having a leading end surface provided with an illuminating window through which illuminating light is projected onto an object to be observed and an observation window for receiving light reflected from said object for the purposes of observation; an optical adapter having a first optical element which is detachably mounted on a first mounting portion provided on the outer periphery of said inserting end portion and mounted in opposed relationship with said illuminating window and a second optical element mounted in opposed relationship with said observation window; an endoscope insertion aid capable of being mounted on a second mounting portion provided on the outer periphery of said inserting section which is disposed rearwardly of said first mounting portion of said inserting end section, said endoscope insertion aid projecting outwardly from the outer periphery of said inserting section so as to aid said inserting section to be inserted; and means for preventing said endoscope insertion aid from coming off, said means being formed such that its minimum effective inner diameter does not exceed the maximum effective inner diameter of said optical adapter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification