Roller pump for use with a perfusion system and associated methods

A roller pump, comprising:

• a roller pump rotor comprising a first roller arm having a first roller rotatably coupled thereto and a second roller arm having a second roller rotatably coupled thereto;
• a raceway disposed around the roller pump rotor and configured to receive a flexible tubing;
• a pump motor configured to rotate the roller pump rotor relative to the raceway;
• and
• an electronic actuator disposed on the roller pump rotor, wherein the electronic actuator is configured to change a radial position of the first roller relative to a central axis of the roller pump rotor and a radial position of the second roller relative to the central axis of the roller pump rotor;
• and
• a threaded mechanism configured to engage the first roller arm and the second roller arm such that actuation of the threaded mechanism by the electronic actuator changes the radial position of the first roller and the radial position of the second roller relative to the central axis of the roller pump rotor;
• wherein the threaded mechanism comprises a threaded rod and a scissors assembly.

A roller pump, comprising:

• a roller pump rotor comprising a first roller arm having a first roller rotatably coupled thereto and a second roller arm having a second roller rotatably coupled thereto;
• a raceway disposed around the roller pump rotor and configured to receive a flexible tubing;
• a pump motor configured to rotate the roller pump rotor relative to the raceway;
• and
• an electronic actuator disposed on the roller pump rotor, wherein the electronic actuator is configured to change a radial position of the first roller relative to a central axis of the roller pump rotor and a radial position of the second roller relative to the central axis of the roller pump rotor;
• and
• a threaded mechanism configured to engage the first roller arm and the second roller arm such that actuation of the threaded mechanism by the electronic actuator changes the radial position of the first roller and the second roller relative to the central axis of the roller pump rotor;
• wherein the threaded mechanism comprises:
• a flattened disk having a center and a peripheral edge;
• and
• a spiral thread extending between the center and the peripheral edge;
• wherein the first roller arm comprises threads configured to engage with the spiral thread of the threaded mechanism and the second roller arm comprises threads configured to engage with the spiral thread of the threaded mechanism.

A roller pump, comprising:

• a roller pump rotor comprising a first roller arm having a first roller rotatably coupled thereto and a second roller arm having a second roller rotatably coupled thereto;
• a raceway disposed around the roller pump rotor and configured to receive a flexible tubing;
• a pump motor configured to rotate the roller pump rotor relative to the raceway;
• and
• an electronic actuator disposed on the roller pump rotor, wherein the electronic actuator is configured to change a radial position of the first roller relative to a central axis of the roller pump rotor and a radial position of the second roller relative to the central axis of the roller pump rotor;
• wherein the electronic actuator comprises a rack and pinion system configured to change the radial position of the first roller and the radial position of the second roller relative to the central axis of the roller pump rotor.

A roller pump, comprising:

• a roller pump rotor comprising a first roller arm having a first roller rotatably coupled thereto and a second roller arm having a second roller rotatably coupled thereto;
• a raceway disposed around the roller pump rotor and configured to receive a flexible tubing;
• a pump motor configured to rotate the roller pump rotor relative to the raceway;
• and
• an electronic actuator disposed on the roller pump rotor, wherein the electronic actuator is configured to change a radial position of the first roller relative to a central axis of the roller pump rotor and a radial position of the second roller relative to the central axis of the roller pump rotor;
• wherein the electronic actuator is couplable to the pump motor such that the pump motor is capable of rotating the roller pump rotor and changing the radial position of the first roller and the radial position of the second roller relative to the roller pump rotor;
• wherein the electronic actuator comprises a clutch mechanism configured to selectively couple the pump motor with the first roller arm and the second roller arm.