Abstract: A dispensing device for a liquid medicament has a cylindrical support formed on a base which receives an application part fitted into this support and costituting a projection from a cover. An annular reservoir braced against the support is pressed inwardly by a prestressed annular body which can be formed integrally with the reservoir of silicone rubber to drive a liquid medicament through the passage formed in the application part into the body at a constant rate.

Abstract: A method and apparatus for automatically controlling heart-synchronized circulating pumps; which method comprises obtaining the parameters needed for regulation by analyzing the blood pressure beat for beat and continuously regulating the pump by reference to the transient parameters thus obtained. An electrocardiogram (EKG) is taken and analyzed, the immediate past history of the heart beat is derived from the analysis and a calculation used to determine the control action exerted on a heart pump. The control action is exerted on the pump through the control action calculator. Thus the body of the patient is included in a closed regulating cycle.

Abstract: Apparatus for mechanically assisting circulation of the blood in the human body comprises a pumping chamber outside the cardiovascular system of a patient but communicating with said system through only one connection, and means for blocking the backflow of blood from the pumping chamber into the cardiovascular system. The blocking means may be one or more variable flow resistant devices or valves which are suitably located inside the cardiovascular system and controlled to operate in synchronism with the heart beat.