Abstract: A variable infusion device for administering liquids parenterally to a patient is formed of inexpensive plastic members. The device includes an elongated passage defined between two members of the device which are bonded to one another. A third member is movable relative to the first and second members to change the length of the elongated passage through which liquid flows thereby changing the flow rate of the liquid through the device. The liquid flow rates to the patient can be incrementally adjusted over a wide range of flow rates. Settings also include a flow rate for merely keeping the patient's vein open.

Abstract: A fluid dispensing device useful as an inexpensive, light-weight ambulatory disposal drug infusion pump comprises a flexible reservoir for liquid to be administered parenterally to a patient, a mechanism for placing the liquid in the reservoir under a constant pressure for dispensing the liquid from the device, a distal septum for introducing liquid in the reservoir, and a flow control mechanism for adjustably controlling the flow rate of the liquid dispensed from the device.

Abstract: A suture ring including a continuous compression ring formed of a ductile, electrically conductive material and a layer of fabric secured around the compression ring. The compression ring is dimensioned slightly larger than the circumferential surface of a heart valve upon which it is to be secured, so that the suture ring can be slipped over the heart valve to a position adjacent the circumferential surface without radial expansion of the compression ring. The compression ring is deformed inwardly by electromagnetic forming to securely clamp the heart valve while permitting relative rotation between the suture ring and heart valve.