Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1987-07-30
1989-07-25
Truluck, Dalton L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, 604198, 604110, 604263, A61M 532
Patent
active
048509612
ABSTRACT:
An indwelling placement device having an introducing needle and a catheter for infusing fluids into a blood vessel incorporates a guard for shielding the needle prior to extension from therewithin and for receiving the needle upon retraction thereinto to preclude an operator inadvertently contacting the needle after use. Once retracted, the needle cannot be extended from within the guard. Upon retraction of the needle into the guard, a button mates with the open end of a hollow hub of the needle to prevent outflow of residual blood therefrom. A valve is incorporated with the catheter to preclude blood outflow from the catheter upon withdrawal of the needle and prior to attachment of an intravenous line for conveying a fluid to be intravenously administered.
REFERENCES:
patent: 2997043 (1961-08-01), Flynn
patent: 3592192 (1971-07-01), Narautuneian
patent: 4096860 (1978-06-01), McLaughlin
patent: 4160450 (1979-07-01), Doherty
patent: 4664654 (1987-05-01), Strauss
patent: 4676783 (1987-06-01), Jagger et al.
patent: 4725267 (1988-02-01), Vaillancourt
patent: 4762516 (1958-08-01), Luther et al.
Sagstetter William E.
Wanderer Alan A.
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