MEDICAL VALVE SYSTEM Russian patent published in 2022 - IPC A61M39/22 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to valve systems intended for use in infusion therapy. Valve system (1-1f) for the injection of at least two medicinal liquids into the body contains: valve case (2-2f) with at least two medicinal inlets (E1-E4), each of which is made with the possibility of receiving one of medicinal liquids, and which in each case have a liquid connection to medicinal outlet (A1-A4) located on inner circular surface (4) of the case, valve core (3-3f) located at least partially in valve case (2-2f), made with the possibility of rotation around the axis of rotation relatively to inner circular surface (4) of the case and containing outer circular surface (7) of the core, inner surface (9) of the core and passage (11, 11a, 11c, 11d) located on outer circular surface (7) of the core, flushing inlet (10) made with the possibility of receiving flushing liquid and having a liquid connection to flushing outlet (8), and outlet (19, 19a, 19c, 19d) of the valve, made with the possibility of releasing flushing liquid and/or at least one of medicinal liquids and having a liquid connection to passage (11, 11a, 11c, 11d), wherein valve core (3-3a) is made with the possibility of rotation into at least two medicinal positions, in which passage (11, 11a, 11c, 11d) in each case has a liquid connection to one of medicinal outlets (A1-A4) with the possibility of transferring corresponding medicinal liquid through outlet (19, 19a, 19c, 19d) of the valve, and at least one flushing position, in which passage (11, 11a, 11c, 11d) through flushing channel (K, Ka, Kd) has a liquid connection to flushing outlet (8) with the possibility of transferring flushing liquid through outlet (19, 19a, 19c, 19d) of the valve, and thereby with the possibility of washing out residues of the first and/or the second medicinal liquid from passage (11, 11a, 11c, 11d) and outlet (19, 19a, 19c, 19d) of the valve. Flushing inlet (10) and outlet (19, 19a, 19c, 19d) of the valve are located on valve core (3-3f). Flushing inlet (10) is located on inner surface (9) of valve core (3-3f), and flushing outlet (8) is located on outer circular surface (7) of valve core (3-3f) with the possibility of transferring flushing liquid in the flushing position through valve core (3-3f) from the inside out. Valve core (3-3f) contains inlet channel (12, 12a, 12c), which has a liquid connection to flushing outlet (8) and passes essentially along the axis of rotation of valve core (3-3f), as well as outlet channel (13, 13a, 13c), which has a liquid connection to passage (11, 11a, 11c, 11d) and outlet (19, 19a, 19c, 19d) of the valve and passes essentially coaxially to inlet channel (12, 12a, 12c).

EFFECT: obtaining a valve system for use in the infusion therapy.

19 cl, 26 dwg