Soft cassette with integrated features

A soft cassette assembly comprising:

• a base plate defining a plurality of receiving regions;
• a door attached to the base plate;
• a first magnet coupled to the base plate;
• a second magnet coupled to the door;
• a pressure sensor in contact with the first magnet or the second magnet;
• and
• a soft cassette configured to be attached to the base plate, the soft cassette including,
• a body defining,
• a first lumen extending between a first end and a second end,
• a first chamber in the first lumen such that fluid passing through the first lumen passes through the first chamber,
• a second lumen fluidly connected to the first lumen at a first junction between the first end and the first chamber and a second junction between the second end and the first chamber such that fluid passing through the second lumen bypasses the first chamber, and
• a second chamber in the second lumen;
• a first component on a first side of the second chamber, the first component comprising a first ferromagnetic metal, the first component being configured to be coupled to the first magnet;
• and
• a second component on a second side of the second chamber, the second component comprising a second ferromagnetic material, the second component being configured to be coupled to the second magnet.

A method of manufacturing a soft cassette, the method comprising:

• forming a first side of a soft cassette body from a first thermoplastic sheet portion;
• forming a second side of the soft cassette body from a second thermoplastic sheet portion;
• fixing the first side to the second side to at least partially define a first lumen extending between a first end and a second end, a first chamber in the first lumen, a second lumen fluidly connected to the first lumen at a first junction between the first end and the first chamber and a second junction between the second end and the first chamber, and a second chamber in the second lumen;
• and
• creating the soft cassette by sealing a perimeter of the first side and the second side.

A soft cassette comprising:

• a body comprising a flexible material, the body defining,
• a first lumen extending between a first end and a second end,
• a first chamber in the first lumen such that fluid passing through the first lumen passes through the first chamber,
• a second lumen fluidly connected to the first lumen at a first junction between the first end and the first chamber and a second junction between the second end and the first chamber such that fluid passing through the second lumen bypasses the first chamber, and
• a second chamber in the second lumen;
• a first component on a first side of the second chamber, the first component comprising a first ferromagnetic metal or a first magnet;
• and
• a second component on a second side of the second chamber, the second component comprising a second ferromagnetic metal or a second magnet,
• wherein a region between the first side of the second chamber and the second side of the second chamber is unobstructed,
• at least one of the first side of the second chamber and the second side of the second chamber is configured to move between a first state and a second state based on a pressure in the second chamber,
• in the first state, the second chamber defines a first pressure and a first dimension is defined between the first component and the second component,
• in the second state, the second chamber defines a second pressure and a second dimension is defined between the first component and the second component,
• the second pressure is larger than the first pressure, and
• the second dimension is larger than the first dimension.