Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1981-02-12
1983-01-18
Truluck, Dalton L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, 604282, 27 24A, A61M 500, A61M 2500
Patent
active
043687300
ABSTRACT:
A stainless steel catheter assembly for communicating between a lumen of a blood vessel of a patient's body and a source or drain of fluid. A cannular termination is disposed at a distal portion of the catheter assembly and mechanically connected to respective distal ends of a wire-wound spring guide and a wire core which is disposed along an internal surface of the spring guide. A fitting for coupling to a source of intravenous fluid or a drainage device is disposed at a proximal portion of the catheter assembly and mechanically connected to the spring guide and wire core at respective proximal ends. Embodiments may be provided with a tapering distal termination which is disposed around a slidably retractable cannular needle for facilitating percutaneous access to the interior of a patient's vein. In other embodiments, the catheter assembly is terminated at the distal end in a blunted manner so as to permit the taking of central venous pressures. Such a bluntly terminated embodiment may be slidably disposed within a cannular needle for facilitating venipuncture.
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