Device and method for treating a medical fluid and medical cassette

A treatment machine for treating a medical liquid having a coupling surface and a flexible mat arranged on the coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine via the flexible mat, the treatment machine comprising at least one suction device,

• characterized in that,
• suction of air between the flexible mat of the treatment machine and the flexible film of the cassette takes place via one or more suction openings arranged in the hard part of the cassette, and wherein the suction device can be coupled to a suction channel of the suction opening of the cassette.

A treatment machine for treating a medical liquid having a coupling surface and a flexible mat arranged on the coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine via the flexible mat, the treatment machine comprising at least one suction device,

• characterized in that,
• suction of air between the flexible mat of the treatment machine and the flexible film of the cassette take place via a suction opening arranged in the hard part of the cassette, said treatment machine further comprising a suction channel in communication with the suction device, wherein the suction channel of the treatment machine can be coupled to a suction channel of the suction opening of the cassette.

An apparatus comprising:

• a treatment machine for treating a medical liquid having a coupling surface and a flexible mat arranged on the coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine via the flexible mat, the treatment machine comprising at least one suction device, suction of air between the flexible mat of the treatment machine and the flexible film of the cassette taking place via one or more suction openings arranged in the hard part of the cassette;
• and
• a medical cassette made of a hard part having liquid-conducting passages which are covered by a flexible film, the medical cassette including at least one suction opening arranged in the hard part of the cassette, said medical cassette being coupled to the coupling surface of the treatment machine.