Regulating valve for adjusting the flow in an infusion or transfusion procedure
First Claim
1. A regulating valve for adjusting the flow in an infusion or transfusion procedure, said regulating valve comprising:
- a housing;
connecting pieces essentially consisting of an inlet connecting piece and an outlet connecting piece opening into a hollow cylindrical valve chamber;
a rotating piece that has a cup-shaped foundation and a cylindrical valve plug extending therefrom, wherein said cylindrical valve plug is inserted into the valve chamber sealing the radial outside periphery of the valve plug and the radial inside periphery of the valve chamber;
where said rotating piece has, on a periphery, at least one groove that is opposite the connecting pieces and which constrictingly connects the connecting pieces in terms of flow, where said rotating piece has a changing cross-section in the peripheral direction, characterized by an annular disc which overlaps the valve chamber and has, on a side facing the rotating piece, a number of markings lying on concentric circles; and
wherein the rotating piece has a number of windows that are in an offset arrangement with respect to each other in the peripheral and radial directions, where each window is lying opposite a marking.
1 Assignment
0 Petitions
Accused Products
Abstract
The medical regulating valve for adjusting the flow in an infusion or transfusion procedure has a housing (2), and a valve chamber (21) into which an inlet connecting piece and an outlet connecting piece (22, 23) open. A rotating piece has a cylindrical valve plug (41) which can be inserted in the valve chamber (21) to form a seal between the plug and the chamber. The valve plug, has, on its outer periphery, at least one groove (42, 43) opposite the connecting pieces (22, 23) connecting the connecting pieces with one another in terms of flow and having a cross-section changing in the peripheral direction. An insert (3) having the shape of an annular disc overlaps the valve chamber (21) and has, on its side facing the rotating piece (4), a number of markings (35, 36, 37) lying on concentric circles. Provided on the rotating piece (4) are a number of windows (45, 46, 47) which are offset with respect to each other in the peripheral and radial directions, each being opposite one of the markings (35, 36, 37).
-
Citations
23 Claims
-
1. A regulating valve for adjusting the flow in an infusion or transfusion procedure, said regulating valve comprising:
- a housing;
connecting pieces essentially consisting of an inlet connecting piece and an outlet connecting piece opening into a hollow cylindrical valve chamber;
a rotating piece that has a cup-shaped foundation and a cylindrical valve plug extending therefrom, wherein said cylindrical valve plug is inserted into the valve chamber sealing the radial outside periphery of the valve plug and the radial inside periphery of the valve chamber;
where said rotating piece has, on a periphery, at least one groove that is opposite the connecting pieces and which constrictingly connects the connecting pieces in terms of flow, where said rotating piece has a changing cross-section in the peripheral direction, characterized by an annular disc which overlaps the valve chamber and has, on a side facing the rotating piece, a number of markings lying on concentric circles; and
wherein the rotating piece has a number of windows that are in an offset arrangement with respect to each other in the peripheral and radial directions, where each window is lying opposite a marking. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- a housing;
Specification