US 6,811,548 B2Granted

Materials delivery device

OwnerPeter Jeffreyinventor

Life of this patent

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Abstract

Materials delivery devices, e.g. for drugs etc. (FIGS. 1-7) or body fluids (FIGS. 8-12), have administration means of piston-and-cylinder (100; 300) or peristaltic rollers and tube (546, 565; 646, 665; 746, 765; 846, 865; 946, 965) type, and intermittently incremental drive transmission means of cooperating toothed rack (143) or wheel (345, 445; 545; 645; 745; 845; 945) and deflectable biassed pawl (153, 156; 343, 356; 453, 456; 553, 556; 653, 656; 753, 756; 853, 856; 953, 956) type driven by pulsed reciprocating solenoid action (110; 310; 410; 510). Portable patient-wearable drug delivery devices (10; 30; 40; 50) can use pre-loaded cartridges (120; 320; 420; 520) and have solenoid drive (130) for needle-entry and battery-powered electronic control, etc. Intravenous infusion pumps (60; 70; 80; 90) can operate relative to body fluid reservoirs or for body fluid transfers.

Claims28

Dependent claims

Materials delivery device for controlling flow of material in administration thereof, comprising

a dispenser body in which material to be dispensed is held and from which it is to be delivered;
means for administering material including parts movable relative to the dispenser body to dispense the material therefrom,
solenoid means intermittently operable to provide drive force for incremental operation of the means for administering, and
drive transmission means comprising a toothed pawl provided on a substantially linear carrier, and toothed actuator means, which is engageable by the toothed pawl and is drivable by the toothed pawl in a one-way non-returnable manner so as to move the means for administering incrementally,
in which respect the substantially linear carrier of the toothed pawl is reciprocable in a substantially linear manner, being intermittently driven by the solenoid means in a first direction and being returned under spring-bias in an opposite direction,
and the toothed pawl is provided on a deflectable portion of the linear carrier so as to disengage automatically from the toothed actuator means in one of the first or opposite directions.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/155,812Filed 30 Sep 1998
Priority: GB 960682930 Mar 1996
Published: US 2002/0029018 A17 Mar 2002
Granted: 2 Nov 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61M 5/1452
Using pressurised reservoirs, e.g. by means of pistons: pressurised by means of pistons
A61M 5/14232
Pumping with an aspiration and an expulsion action: roller pumps
A61M 5/14248
Adapted to be carried by the patient, e.g. portable on the body: of the skin patch type
A61M 2005/14252
Of the skin patch type: with needle insertion means