Machine element or mechanism – Mechanical movements – Reciprocating to or from oscillating
Patent
1995-01-26
1997-10-07
Ta, Khoi Q.
Machine element or mechanism
Mechanical movements
Reciprocating to or from oscillating
741001, 74 36, 200400, F16H 2518
Patent
active
056735880
ABSTRACT:
A retraction mechanism is disclosed for retracting and engaging the pumping mechanism assembly of an infusion pump with an infusate flow path. The retraction mechanism provides a linkage which converts rotary motion of a handle about an axis to linear motion along a line parallel to the axis. The linkage is connected to the pumping mechanism assembly to cause the pumping mechanism assembly to retract from or engage with the flow path via a disposable cassette. The retraction mechanism is biassed toward the engaged position to prevent free flow of infusates on the flow path. The retraction mechanism is operable in two steps: first, the handle is pulled out against the biassing force; second, the handle is rotated until it locks into the retracted position. The mechanism includes a toggle linkage which aids in locking the mechanism in the retracted position and in biassing the mechanism to the engaged position when the handle is moved out of the locked retraction position.
REFERENCES:
patent: D290656 (1987-06-01), Kaleskas
patent: 647144 (1900-04-01), Mercer
patent: 872885 (1907-12-01), Anderson
patent: 1525989 (1925-02-01), Hill
patent: 2995043 (1961-08-01), Lusk
patent: 3187593 (1965-06-01), McCloud
patent: 3582591 (1971-06-01), Few
patent: 4696671 (1987-09-01), Epstein et al.
patent: 4753270 (1988-06-01), Lawhite et al.
patent: 4828545 (1989-05-01), Epstein et al.
patent: 4865584 (1989-09-01), Epstein et al.
patent: 5100380 (1992-03-01), Epstein et al.
patent: 5108367 (1992-04-01), Epstein et al.
patent: 5127907 (1992-07-01), Coutre et al.
patent: 5153827 (1992-10-01), Coutre et al.
patent: 5304126 (1994-04-01), Epstein et al.
patent: 5317506 (1994-05-01), Coutre et al.
patent: 5426990 (1995-06-01), Francart
patent: 5545867 (1996-08-01), Castonguay
Abbott Laboratories
Fenstermacher David M.
Hjorth Beverly E.
Marcus Neal D.
Ta Khoi Q.
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