초록 ▼

An improved medical device for use with an elongated flexible instrument of the type adapted to at least partially extend into the lumen of a tubular body part and having a front end for leading said instrument through said lumen and a rear end opposite said front end. The device comprises (a) an el

An improved medical device for use with an elongated flexible instrument of the type adapted to at least partially extend into the lumen of a tubular body part and having a front end for leading said instrument through said lumen and a rear end opposite said front end. The device comprises (a) an elongated flexible sheath capable of being coaxially mounted on and axially slidable with respect to said instrument between said front and rear ends of said instrument and (b) an integrally-formed cuff assembly including a front inflatable cuff section adapted to be secured to the front end of said instrument, a rear inflatable cuff section adapted to be secured to the front end of said sheath and a middle expandable section integrally formed with said front and rear cuff sections for protecting that portion of said instrument between the position of said front and rear cuffs.

대표청구항 ▼

A device capable of being used with an elongated flexible instrument of the type adapted to at least partially extend into the lumen of a tubular body part and having a front end for leading said instrument through said lumen and a rear end opposite said front end, said device comprising, in combina

A device capable of being used with an elongated flexible instrument of the type adapted to at least partially extend into the lumen of a tubular body part and having a front end for leading said instrument through said lumen and a rear end opposite said front end, said device comprising, in combination: an elongated flexible sheath capable of being coaxially mounted on and axially slidable with respect to said instrument between said front and rear ends of said instrument; a cuff assembly including a front inflatable cuff section adapted to be secured to the front end of said instrument, a rear inflatable cuff section adapted to be secured to the front end of said sheath and a middle expandable section integrally formed with said front and rear cuff sections for protecting that portion of said instrument between the position of said front and rear cuffs; means for securing said front cuff section to said front end of said instrument so that said front cuff can be inflated with a pressurized fluid without introducing said pressurized fluid into said middle section; means for securing said rear cuff section to said front end of said sheath so that said rear cuff can be inflated with a pressurized fluid without introducing said pressurized fluid into said middle section; and means for providing said pressurized fluid to and from said front and rear cuff sections so as to selectively inflate and evacuate said cuff sections.