摘要:
A drug delivery device drive that includes a single shape memory alloy wire actuator to advance a lead screw via a ratcheting mechanism and method thereof are disclosed. In one embodiment, a shape memory alloy wire is operably connected to one of a pair of ratchet wheels and configured to drive incrementally the rotation of the connected ratchet wheel via a contraction, which in turn drives the rotation of the other ratchet wheel about a rotational axis which moves a lead screw and advances a plunger to dispense a liquid drug from a drug container. A drug delivery device using the shape memory alloy wire actuator in combination with the ratcheting mechanism to incrementally rotate a shaft, a lead screw or a sleeve provides for a more compact an less complicated design.
摘要:
A lancet enclosed in a sterility sheet forms a lancet packet to maintain the sterility of the lancet and prevent the lancet from unintentionally piercing the sterility sheet prior to lancet actuation. In one form, the lancet is immobilized by hot tack welding a portion of the sterility sheet to the lancet. Alternatively, portions of the sterility sheet are hot tack welded together through an opening in the lancet to limit movement of the lancet.
摘要:
A drug delivery pump drive which uses a linear piezoelectric motor to advance a syringe piston to deliver a liquid drug and a method thereof are disclosed. The pump drive, provided in a drug delivery pump, provides silent operation and very low energy consumption compared to electric motor-based drives. The small size of the motor helps also to reduce overall size of the pump drive and the resulting drug delivery pump.
摘要:
A drug delivery device (10) comprises a shaft (20); a drive system (30) operably connected to the shaft and configured to only rotate the shaft in a first direction; a drug reservoir (12) having a plunger (16) used to adjust a volume of the drug reservoir; a piston rod (14) operably connected at a first end to the plunger and providing threads (70) on an exterior surface thereof, the piston rod being operably connected to the shaft, wherein said drug delivery device provides a secured position which permits the rotation of the shaft to drive the piston rod and move the plunger to adjust the volume of the drug reservoir, and an unsecured position which permits the drug reservoir to be removed unobstructed from the drug delivery device and replaced without having to rotate the shaft in a direction opposite to the first direction. Said drug delivery device further comprises a partially threaded nut (74) that is spring (84) biased, which allows engagement with the threads of the piston rod in a first position to permit plunger (16) movement via rotation of the shaft, and which disengages with the threads of the piston rod in a second position, thereby preventing plunger movement with or without shaft rotation.
摘要:
A drug reservoir loading and unloading mechanism for drug delivery device using unidirectional rotated lead screw and method thereof are disclosed. The drug reservoir loading/unloading mechanism allows exchanging the drug reservoir quickly with very few steps and with more safety. The invention neither requires rewinding of the drive system either automatically or manually while replacing the drug reservoir nor requires an additional adapter to secure the drug reservoir.
摘要:
A test strip container with an insert comprising a channel and a retaining member and methods of manufacturing and utilization thereof are disclosed. The container includes a housing, an insert, a lid, and at least one retaining member in at least one channel. The at least one retaining member releasably retains a plurality of test strips in the at least one channel.
摘要:
A test strip container (10) with an insert (38) comprising a channel (40) and a retaining member (44) and methods of manufacturing and utilization thereof are disclosed. The container (10) includes a housing (20), an insert (38), a lid (22), and at least one retaining member (44) in at least one channel (40). The at least one retaining member (44) releasably retains a plurality of test strips (12) in the at least one channel (40).