Sheath device for endoscope and fluid conduit connecting structure therefor

A channel tube for an endoscope, which is removably fitted in an insert tube of said endoscope, comprising:

• a plurality of channels for passing fluids, each channel opening at one end thereof to the outside at the distal end portion of said channel tube;
• and
• a channel connecting means which is provided at the proximal end portions of said channels and which is capable of simultaneously connecting at least two of said channels to respective conduits in said endoscope.

A structure for connecting fluid conduits in a sheath device to fluid conduits in an endoscope, said sheath device removably covering an insert tube of said endoscope to isolate said insert tube from the external environment, comprising:

• a plurality of channels for passing fluids, each channel opening at one end thereof to the outside at the distal end portion of said sheath device;
• and
• a channel connecting means which is capable of simultaneously connecting at least two of said channels to respective conduits in said endoscope.

A structure for connecting fluid conduits in a channel tube to fluid conduits in an endoscope, which is removably fitted in an insert part of said endoscope, comprising:

• a plurality of channels for passing fluids, each channel opening at one end thereof to the outside at the distal end portion of said channel tube;
• and
• a channel connecting means which is capable of simultaneously connecting at least two of said channels to respective conduits in said endoscope.

A sheath device for an endoscope, which removably covers an insert tube of said endoscope to isolate said insert tube from the external environment, comprising:

• an airproof sheath which removably covers said insert tube;
• and
• a packing which is provided in an opening at the proximal end of said sheath in such a manner as to be movable in the radial direction of said sheath to enable said insert tube to be inserted into and removed from said sheath with the outer peripheral surface of said insert tube being hermetically sealed, without any gap between said packing and said outer peripheral surface.

A sheath device which removably covers an object which is inserted therein to isolate said object from the external environment, comprising:

• an airproof sheath which removably covers said object;
• and
• a packing which is provided in an opening at the proximal end of said sheath in such a manner as to be movable in the radial direction of said sheath to enable said object to be inserted into and removed from said sheath with the outer peripheral surface of said object being hermetically sealed, without any gap between said packing and said outer peripheral surface.

A bag device which removably covers an object which is inserted therein to isolate said object from the external environment, comprising:

• an airproof bag which removably covers said object;
• and
• a packing which is provided in an opening at the proximal end of said bag in such a manner as to be movable in the radial direction of said bag to enable said object to be inserted into and removed from said bag with the outer peripheral surface of said object being hermetically sealed, without any gap between said packing and said outer peripheral surface.