FLUID-BALANCING CASSETTE

• Main Authors: DEMERS JASON A, TRACY BRIAN, DALE JAMES D, GRANT KEVIN L, WILT MICHAEL J
• Format: Patent
• Language: English; Korean
• Published: 29.01.2021
• Subjects: BLASTING; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HEATING; HUMAN NECESSITIES; HYGIENE; LIGHTING; MECHANICAL ENGINEERING; MEDICAL OR VETERINARY SCIENCE; PIPE-LINE SYSTEMS; PIPE-LINES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; STORING OF DISTRIBUTING GASES OR LIQUIDS; WEAPONS

본 발명은 펌프 카세트에 관한 것이다. 펌프 카세트는 적어도 하나의 유체 입구 라인과 적어도 하나의 유체 출구 라인을 포함하는 하우징을 포함한다. 카세트는 또한 하우징 내의 적어도 하나의 왕복식 압력 변위 멤브레인 펌프(820)를 포함한다. 압력 펌프는 유체를 상기 유체 입구 라인으로부터 상기 유체 출구 라인으로 펌핑한다. 하우징 상의 중공의 스파이크(902)와 적어도 하나의 계량 펌프(830)가 또한 포함된다. 계량 펌프(830)는 상기 하우징 상의 상기 중공 스파이크(902)와 계량 펌프 유체 라인에 유체 연결된다. 계량 펌프 유체 라인은 상기 유체 출구 라인에 유체 연결된다. A membrane-based valve comprising a top plate (214), a bottom plate (216) and a midplate (204) located between the top plate and the bottom plate, with a flexible membrane (202) interposed between the top plate and midplate. The top plate includes a pneumatic port (208) configured to deliver pneumatic pressure to the membrane. The midplate includes an inlet (218) and an outlet (220) in fluid communication with the membrane. The valve further comprises a valve seat (210). The bottom plate further comprises fluid paths defining the inlet and the outlet. The membrane and top plate define a control gas chamber (212), and the membrane and midplate define a valving chamber (206), the inlet and outlet in communication with the valving chamber (206) via holes formed through the midplate (204). A thickened rim (222) of the membrane is configured to be held in a groove (224) in the midplate. A cross-sectional shape of a part of the membrane comprises a first region with a cross-sectional curvature in a first direction that is a direction toward the top plate and a second region located within the first region with a cross-sectional curvature in a second direction opposite the first direction, and the pneumatic pressure from the pneumatic port is configured to force the membrane against the valve seat to close the valve, or draw the membrane away from the valve seat to open the valve.