Endoscope system including endoscope and protection cover

An endoscope system comprising:

• (a) an endoscope including:
• an insertion section having a proximal end and a distal end and being insertable into a cavity to be inspected, said insertion section comprising a distal end construction member having an objective optical system installed therein, a bendable portion coupled with said distal end construction member and a flexible portion connected to said bendable portion and extending to said proximal end of the insertion section, an outer configuration of said distal end construction member having a non-circular cross-section and an outer configuration of at least one of said bendable portion and said flexible portion having a substantially circular cross-section, and
• an operation section connected to the proximal end of the insertion section;
• and
• (b) a protection cover having a proximal end and a distal end and including:
• an insertion section inserting channel into which said insertion section of the endoscope is insertable and which extends from the proximal end to the distal end,
• a distal end member provided at the distal end of said protection cover and including an accommodating portion having a non-circular shape corresponding to said non-circular cross-section of said distal end construction member of the insertion section of the endoscope, and
• a conduit channel extending substantially in parallel with said insertion section inserting channel from a proximal end to a distal end, at least one tube being insertable into said conduit channel.

An endoscope system comprising:

• (a) an endoscope including:
• an insertion section having a proximal end and a distal end and being insertable into a cavity to be inspected, said insertion section comprising a distal end construction member provided on the distal end and having an objective optical system installed therein, an outer configuration of said distal end construction member having a non-circular cross-section and an outer configuration of a remaining portion of the insertion section having a substantially circular cross-section, and
• an operation section connected to the proximal end of the insertion section;
• and
• (b) a protection cover having a proximal end and a distal end and including:
• an insertion section inserting channel into which said insertion section of the endoscope is insertable and which extends from the proximal end to the distal end,
• a distal end member provided at the distal end of said protection cover and including an accommodating portion having a non-circular shape corresponding to said non-circular cross-section of said distal end construction member of the insertion section of the endoscope, and
• a conduit channel extending substantially in parallel with said insertion section inserting channel from a proximal end to a distal end, at least one tube being insertable into said conduit channel.