A catheter including a flexible hose attached to one end of a rigid tube through which fluid pressure may be applied to invert said hose from an invaginated position within said tube to an exserted position extending outwardly of said tube has formed at the distal of said hose a valve which remains closed when the hose is in the invaginated position and which opens with the hose in its exserted position. The valve is formed integrally by portion of the hose distal end by cutting the distal end a...

A combined needle and catheter of the type in which the needle is used to lead the end of the catheter thereon into a body cavity and, after insertion, is withdrawn through the catheter with most of the catheter remaining in the body, where the catheter has a strengthening die wiper, a retention bead, a radio-opaque material imbedded therein, and/or a flexible reinforcing member imbedded therein with its pointed end downward and located within the orifice of a die wiper. Thereafter, a measured q...

A catheter is disclosed which is simple to use, avoids the problems with prior catheters, which is fail-safe and fool-proof and one by which the patient cannot injure himself. The catheter comprises a flexible inner tubular member forming a flow duct, snuggly and slidably disposed in an outer tubular member, and having a rounded expansion tip at its inner end comprised of a plurality of prongs biased outwardly and operable to expand and open on inward movement of the inner tubular member in the ...

A catheter having a shaft including a drainage lumen and an inflation lumen is provided with a molded connector unit bonded to its proximal end, the connector unit including a drainage fitting and an inflation side arm. A rigid adapter tube has its forward end extending into the drainage lumen and its rearward end seated against the drainage fitting to seal the drainage lumen and fitting from the side arm and inflation lumen; the adapter tube provides communication between the drainage lumen and...

A catheter is provided, having a flexible elongated conduit adapted for insertion into a passage in the patient's body. The conduit has a forward insertion end and a rearward distal end, and has a handpiece which surrounds a portion of the conduit in the area of the insertion end. A sealing envelope is attached forwardly on the handpiece and is sealed with respect to the conduit, forming a sealed, enclosed space surrounding at least a portion of the handpiece and also surrounding at least a port...

A catheter for males including a flexible, resilient, sheath-like bag for reception of the penis and provided with a thickened upper end portion or rim supported from a waist encircling belt by a pair of elongated resilient straps which are capable of being adjustable in length. The lower end of the bag is communicated with a leg supported urine collection bag. The upper end portion or rim of the flexible bag or sheath-like tubular member is provided with a plurality of integrally formed loops o...

A catheter including a flexible hose attached to one end of a rigid tube through which fluid pressure may be applied to invert said hose from an invaginated position within said tube to an exserted position extending outwardly of said tube has formed at the distal of said hose a valve which remains closed when the hose is in the invaginated position and which opens with the hose in its exserted position. The valve is formed integrally by portions of the hose distal end by cutting the distal end ...

A catheter assembly including a plastic tube having a cup-shaped bulb at one end and which is oval in cross section. The walls of the bulb are thicker than the remainder of the tube and a hub is molded about the bulb both interiorly and exteriorly thereof. The bulb is formed by placing the tube on a mandrel, which extends from a mandrel carrier, and thereafter placing the carrier on a base so that the upper end of the tube and mandrel extend through a slot and into a heating cavity defined by a ...

The invention concerns a novel catheter for placement in an artery, vein or fistula vessel of a patient, through which blood may be withdrawn or delivered to the patient, which comprises a catheter wall, the inside surface of which defines a lumen having a cross-sectional area in a proximal end region of the catheter which is larger than the cross-sectional area of the lumen defined in a distal end region of the catheter, at least one opening being provided in the wall of the catheter in the reg...

A catheter adapted for introduction into difficulty accessible regions of the human body comprising a catheter tube and a flexible tube adapted for displacement within the catheter tube and for protrusion from the distal end of the catheter tube. A radio-opaque embolus is attached to the distal end of the flexible tube by means of a flexible thread. When the catheter is inserted into the body in the vicinity of the required region, the embolus is directed into the required region by the flow of ...