Abstract: Disclosed is a catheter for penetrating a stenotic lesion occurred in a lumen in a human body, including: a linear wire; and a tubular body placed on a distal end side of the wire and allowing a guide wire to be inserted through its hollow portion. The catheter of the present invention is excellent in push-in property, capable of easily and rapidly penetrating a stenotic lesion, and capable of being exchanged with a balloon catheter easily and rapidly.

Abstract: Disclosed is a catheter for penetrating a stenotic lesion occurred in a lumen in a human body, including:

Abstract: A first linear member made of a first resin material having a relatively high rigidity is wound in a dense spiral in a first region and in a sparse spiral in a second region of a base tube for a catheter, and a second linear member made of a second resin material having a relatively low rigidity is wound in a sparse spiral in the first region and in a dense spiral in the second region of the base tube. Then, the first linear member and the second linear member are melted by heating, followed by solidifying the molten materials, thereby forming a catheter excellent in pushability, torque transmitting capability, following capability, kink resistance and safety.

Abstract: A catheter has a flexible tubular body and a reinforcing coil embedded in a wall of said body, wherein said catheter has an outer diameter not larger than 1.5 mm at a front end thereof, said body has a first region disposed within a range of 1-30 mm from said front end of said catheter and a second region nearer to a rear end of said catheter than said first region; said coil extends from a position inside said first region to said second region; a part of said coil disposed in said second region is wound at long winding pitches; and a winding pitch of a part of said coil disposed in said first region is shorter than that of the part of the coil disposed in said second region and becomes shorter gradually or stepwise toward said front end of said catheter, whereby a rigidity of said catheter is lower in said first region than in said second region.

Abstract: A catheter has a flexible tubular body and a reinforcing coil embedded in a wall of said body, wherein said catheter has an outer diameter not larger than 1.5 mm at a front end thereof, said body has a first region disposed within a range of 1-30 mm from said front end of said catheter and a second region nearer to a rear end of said catheter than said first region; said coil extends from a position inside said first region to said second region; a part of said coil disposed in said second region is wound at long winding pitches; and a winding pitch of a part of said coil disposed in said first region is shorter than that of the part of the coil disposed in said second region and becomes shorter gradually or stepwise toward said front end of said catheter, whereby a rigidity of said catheter is lower in said first region than in said second region.

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: The one end of each of liquid introduction pipes through which treating ilquid is introduced from the treating liquid storing baths into the interior of a single disc film treating tank is opened on the peripheral wall of the disc film treating tank. A partition wall is provided in front of a series of treating liquid supply ports on the peripheral wall of the disc film treating tank to constitute a waste liquid chamber which is effective for inhibiting an occurrence of mixing of one treating liquid with other one. The height and width of the partition wall is so determined that stream of the treating liquid flies above the top of the partition wall under the effect of flow inertia.

Abstract: A new and unique apparatus for specially treating photosensitive material in the form of disc films which have been lately developed but have a limited quantity of demand at present is disclosed in which a series of treatments starting with developing and ending with drying are automatically practiced for the disc films inserted in the apparatus. A plurality of treating tanks, a squeeze tank and a drier are arranged in line in the dark box of the apparatus, while a holder insert port is disposed at the one end part and a holder discharge port is disposed at the other end part of the apparatus. A hanger including a rotary disc film supporting shaft at the lower end part thereof so as to carry the disc film to be treated is slidably mounted on a movable rail which is caused to repeatedly practice a series of movements comprising raising, forward movement, lowering and backward movement, accompanied by a temporary stop at the lowermost end position.