Abstract: An endotracheal tube comprising a tubular body having a lumen and an inflation lumen provided in parallel with the lumen, and an inflatable and deflatable cuff attached to the distal end portion of the tubular body so as to surround the outside surface of the tubular body and communicate with the inflation lumen, characterized by said cuff being made of a flexible fluoroplastic, a mixture of a flexible fluoroplastic and a thermoplastic resin or a partly cross-linked resin with a low laughing gas permeability.

Abstract: A catheter is manufactured by tapering a distal portion of a hollow catheter body, bonding a tip member of relatively soft material to the tapered distal portion of the catheter body, and thermoforming the catheter body distal portion and the tip member.

Abstract: A fluid pressure transducer apparatus comprising a fluid pressure transducer mechanisms and a fluid pressure-transmitting path. The fluid pressure transducer mechanism includes a fluid pressure detection mechanism, having a detection surface of a fluid pressure, for converting a fluid pressure into an electrical signal, and a chamber, formed on the detection surface, for storing a fluid. The path includes a cylindrical member having a first port comminicating with the chamber and a plurality of second ports arranged on a surface perpendicular to an axis of the cylindrical member, and a stop cock arranged in the cylindrical member to be slidable with an inner surface of the cylindircal member. The stop cock has a path defined therein and a handle for slidably rotating the stop cock in the cylindrical member through a predetermined angle so that the path communicates the first port with only one of the plurality of second ports and no other second ports communicate with each other.

Abstract: A fluid pressure transducer apparatus comprising a fluid pressure transducer mechanism and a fluid pressure-transmitting path. The fluid pressure transducer mechanism includes a fluid pressure detection mechanism, having a detection surface of a fluid pressure, for converting a fluid pressure into an electrical signal, and a chamber, formed on the detection surface, for storing a fluid. The path includes a cylindrical member having a first port communicating with the chamber and a plurality of second ports arranged on a surface perpendicular to an axis of the cylindrical member, and a stop cock arranged in the cylindrical member to be slidable with an inner surface of the cylindrical member. The stop cock has a path defined therein and a handle for slidably rotating the stop cock in the cylindrical member through a predetermined angle so that the path communicates the first port with only one of the plurality of second ports and no other second ports communicate with each other.