Patent ID: 8877061

Claim:
An apparatus for purifying body fluid with solution comprising: a casing having: a first input port for receiving the solution via a solution entry line; a first output port for sending forth the solution via a solution exit line; a second input port for receiving the body fluid via a fluid entry line; a second output port for sending forth the body fluid via a fluid exit line; and a semi-permeable membrane installed therein for filtering the body fluid from the solution; a first check valve disposed adjacent to the first input port for connecting to the solution entry line and restricting the solution to only enter the casing, wherein the first check valve is monolithically formed with the casing at the first input port; and a second check valve disposed adjacent to the first output port for connecting to the solution exit line and restricting the solution to only exit the casing, wherein the second check valve is monolithically formed with the casing at the first output port.