1975-04-28
1977-08-23
Truluck, Dalton L.
Surgery
Truss
Pad
128262, A61M 2500
Patent
active
040433455
ABSTRACT:
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 along a plane extending obliquely of the axis of the hose and forming the distal end walls of the hose in an abutting configuration defining therebetween an orifice which tends to remain closed by abutment of the distal end walls against each other when the hose is in its invaginated position, and particularly when fluid pressure is applied within the tube, with the abutting wall portions between which said orifice is defined tending to separate to open the orifice when the hose is exserted from the tube.
REFERENCES:
patent: 3502069 (1970-03-01), Silverman
patent: 3506011 (1970-04-01), Silverman
patent: 3802461 (1974-04-01), Witt
patent: 3911927 (1975-10-01), Rich et al.
Kramann Bernhard
Tammen Heinrich
ByK Gulden Lomberg Chemische Fabrik GmbH
Truluck Dalton L.
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