Patent ID: 11939968
Assignee: ALTRA, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  A | IPC A  F

Claim 10:
11. A disposable cassette for use in a pumping system comprising:
(a) a body having a sealed top side, an open bottom side, an inlet port disposed on a first end and an outlet port disposed on a second end;
(b) a first pumping chamber disposed within the open bottom side between a first inlet valve and a first outlet valve;
(c) a second pumping chamber disposed within the open bottom side between a second inlet valve and a second outlet valve, wherein the first and second pumping chambers are positioned in parallel with each other, and a first fluid path extending from the first inlet valve to the first outlet valve is symmetric to a second fluid path extending from the second inlet valve to the second outlet valve, the first and second fluid paths having an equivalent length; and
(d) a membrane adhered to and sealing the open bottom side defining a fluid path between the inlet port and the outlet port, the membrane being configured for contacting drive arms of the pumping system,
wherein the membrane is not stretched by the pumping system while in use.