| 摘要 |
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.
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