US 12,239,770 B2
Apparatus and method for preparing a medical solution
Patrick Beßler, Erlenbach (DE); Stefan Eberlein, Höchberg (DE); and Andreas Hemm, Alzenau (DE)
Assigned to VIVONIC GMBH, Sailauf (DE)
Appl. No. 16/765,918
Filed by Vivonic GmbH, Sailauf (DE)
PCT Filed Nov. 20, 2018, PCT No. PCT/EP2018/081979
§ 371(c)(1), (2) Date May 21, 2020,
PCT Pub. No. WO2019/101757, PCT Pub. Date May 31, 2019.
Claims priority of application No. 10 2017 127 637.8 (DE), filed on Nov. 22, 2017.
Prior Publication US 2020/0360587 A1, Nov. 19, 2020
Int. Cl. A61M 1/16 (2006.01)
CPC A61M 1/1666 (2014.02) [A61M 2205/7545 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for preparing a medical solution comprising a fluid system having a main circuit and a branch section in communication with the main circuit, the main circuit comprises a suction unit, a pump, a fine mixing chamber, and a product container, and the branch section comprises a suction line, wherein
the main circuit is a circuit in which the pump and the product container are arranged and that is configured to circulate liquid by operating the pump,
the branch section is configured to connect to a raw material container containing a raw material that is at least partly not dissolved, therein,
the suction line is configured to be connected to the raw material container and is connected to the suction unit of the main circuit,
the suction unit is configured to suck in liquid together with the raw material at least partly not dissolved, from the suction line, and to introduce the liquid with the raw material at least partly not dissolved into a liquid flowing through the main circuit,
the fine mixing chamber comprises an inlet, an outlet, a swirl chamber, a manifold, and a retention element arranged between the inlet and the manifold, the retention element being configured to retain undissolved raw material,
the fine mixing chamber is arranged between the suction unit and the product container,
the swirl chamber extends around the retention element,
liquid passing through the fine mixing chamber enters the inlet, flows into the swirl chamber, and flows upwardly and through the retention element and into the manifold before exiting through the outlet,
during operation a swirl is created in the swirl chamber, and
during operation, the raw material at least partly not dissolved is held in the swirl chamber, spaced apart from the retention element, by the swirl and by gravity.