IT1076837B - Liquid medicine dispensers - contg. semiautomatic, sealed off dosing mechanisms used in oral and injection therapy - Google Patents

Abstract

Mechanisms for the storage and dosing of medicines for peroral and injection use. The device for alterable predosing by means of pumps of the piston-cylinder type or folding bellows with partially automatic lifting or pushing movement (brought about by stored or hydraulic or pneumatic or electrically produced power). Rotation pumps can be used or steered flow limitation in front or begind or between medicine supply container with a capacity exceeding the volume of a single dose and with rigid or movable or partially rigid and partially movable walls is present. A fixed or variable predosing can also be used in injection syringes or hollow space connection in connection with a cannula by limitation of movement or space on an obstacle attached or attachable to the medicine supply container or the injection syringes or hollow space connection with a cannula. While the source of power which either produces or transfers the propulsions, is separated from the medicine, which is to be used soon after the dosing, by means of either a membrane or mechanisms of the piston or gear-type or otherwise for oral use. It can be connected to a container or an inlet tube with or for rinsing fluid either before the medicine outlet opening or before an outlet valve. For injection a device is used which prevents the contamination by germs of the medicine supply and preserves its biological effectiveness, is present to close the medicine outlet opening if not in use. A seal includes also the use of antiseptic (germ-killing or hindering) materials ot ingredients or of a container around the medicine outlet opening, under the influence of germ-killing or hindering materials. It is sealed off from the exterior air, or through formations in the area from the medicine outlet opening up to and including the outlet valve. This reduces contact with air, or suction devices for this area or devices for mechanical movement of masses (including the gas or fluid-rinsing) in this area. The adhesion of the seal is increased through mechanisms, which independently (activated by stored or hydraulic or pneumatic or electrically produced power) restore the state of being sealed, or through mechanisms for thermic control (influence) with all the above-named protection mechanisms able to enclose a cannula in a permanent or detachable connection. An individual dose is provided with propulsion producing power, which is stored in the container.