Hemodialysis uses a special filter called a dialyzer that functions as an artificial kidney to clean your blood. The dialyzer is a canister connected to the hemodialysis machine.
seat noun (FURNITURE) A2 [ C ] a piece of furniture or part of a train, plane, etc. that has been designed for someone to sit on: Chairs, sofas and benches are different types of seat. Please have/take a seat (= sit down). A car usually has a driver's seat, a front/passenger seat and back/rear seats.
a long seat for several persons: a bench in the park. 2. a seat occupied by an official, especially a judge. 3. such a seat as a symbol of the office and dignity of an individual judge or the judiciary. 4. the office or dignity of various other officials, or the officials themselves.