US 12,259,048 B2
Non-return valve, drip chamber, port for needle-free metering of a liquid, back-flow barrier, infusion or transfusion system and method for producing a non-return valve
Christof Schlitt, Frielendorf (DE)
Assigned to B. Braun Melsungen AG, Melsungen (DE)
Appl. No. 17/795,580
Filed by B. Braun Melsungen AG, Melsungen (DE)
PCT Filed Feb. 5, 2021, PCT No. PCT/EP2021/052809
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2021/156440, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10 2020 201 483.3 (DE), filed on Feb. 6, 2020.
Prior Publication US 2023/0358326 A1, Nov. 9, 2023
Int. Cl. F16K 15/14 (2006.01); A61M 39/24 (2006.01)
CPC F16K 15/147 (2013.01) [A61M 39/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A check valve comprising a valve body that is pot-shaped,
wherein the valve body has a lateral wall extending along an axis, a bottom wall, and an opening opposite the bottom wall with respect to the axis;
wherein the valve body comprises an elastic material;
wherein the elastic material is cut along a cut that extends through the lateral wall and circumferentially about the axis; and
wherein the elastic material comprises a material processed by liquid injection molding using liquid silicone rubber.