| 摘要 |
PCT No. PCT/GB90/00731 Sec. 371 Date Aug. 14, 1991 Sec. 102(e) Date Aug. 14, 1991 PCT Filed Mar. 12, 1990 PCT Pub. No. WO90/10468 PCT Pub. Date Sep. 20, 1990.An infusion pump, suitable for medical applications, has a movable carriage which is arranged gradually to depress the plunger of a syringe. The carriage moves along a fixed rod at a rate determined by the rotation of a lead screw. Any excess pressure in the infusion line produces a back-pressure on the plunger which causes an axial force to be exerted on the carriage and thus on the lead screw. When this force exceeds a predetermined value, indicative of an occlusion of he infusion line, the lead screw will move axially so compressing a spring and causing a clutch to become decoupled, causing infusion to cease and an alarm to sound.
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