Device for the administration of injectable products with a controlled flow rate

摘要

A device is for the administration of injectable products with controlled flow rate, with a container (23) in the form of both a syringe and an ampoule preloaded with the injectable product, an injection port (25) and a control valve (21) for controlling the outlet rate and pressure arranged between the injectable products and the injection port (25). A device for reducing the outlet flow rate depends on the pressure increase applied during the administration of the injectable product, the administration being moderated by closing the valve (21) when the pressure exceeds a predetermined limit. A device prevents the backflow of fluids during the administration of the injectable product. The valve (21) can be positioned both in the container (23) and at an injection end (27) including the injection port (25) which is coupled to the container (23).

主权项

1. A device for the administration or dosing of an injectable product comprising:
a container preloaded with the injectable product and an injection port, and a control valve for controlling the outlet flow rate and pressure arranged between the injectable product and the injection port, wherein the valve comprises limiting means for limiting the injectable product outlet flow rate, which limit the flow rate to a pre-established maximum value when the pressure increases up to a predetermined value, the limiting means comprising at least one passage opening for the passage of the injectable product which can gradually be blocked by blocking means operable by the effect of the pressure of the injectable product, limiting the passage of the injectable product through the opening to a pre-established maximum value when the pressure increases up to a predetermined value; wherein said valve comprises anti-backflow means for preventing backflow of fluids during administration or dosing of the injectable product; wherein said control valve comprises an enclosure in which the passage opening for the passage of the injectable product is arranged, and wherein the blocking means for blocking said passage outlet comprise a blocking stopper arranged in the enclosure which moves to open the opening by the effect of the pressure of the injectable product, and which moves to block the opening operated by a spring arranged inside the enclosure and fixed to said blocking stopper.