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US 7,018,182 B2Granted
Self-loading peristaltic pump for extracorporeal blood circuit
AssigneeCHF Solutions, Inc.
InventorsJohn J. O'Mahony, Sonny Behan
Life of this patent
Estimating the term…
Abstract
A peristaltic pump is disclosed having pump motor with a rotating motor shaft and a shaft axis; a peristaltic pump head rotatably mounted on the motor shaft; a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, wherein the track has a beveled edge at an entrance to the raceway to receive a tube loop being loaded into the pump; the pump head includes at least one roller orbiting the raceway and compressing the tube loop against said raceway, and a cartridge to which the tube loop is attached and mountable on the raceway.
Claims13
A peristaltic pump comprising:
- a pump motor having a rotating motor shaft with a shaft axis;
- a peristaltic pump head mounted on the motor shaft;
- a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, said track having a beveled edge at an entrance to the raceway to receive a tube loop being loaded into the pump;
- said pump head further comprising at least one roller riding in said raceway and orbiting said shaft axis, said roller compressing the tube loop against said raceway when said tube loop is mounted in the raceway, and
- a cartridge to which the tube loop is attached and is mountable on the raceway, wherein said cartridge positions the tube loop between the track and roller when the cartridge is mounted on the raceway, and the loop is inclined at an angle with respect to a plane of the cartridge.
2 more elements
A peristaltic pump comprising:
- a pump motor having a rotating motor shaft with a shaft axis;
- a peristaltic pump head mounted on the motor shaft;
- a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, said track having a beveled edge at an entrance to the raceway to receive a tube loop being loaded into the pump;
- said pump head further comprising at least one roller riding in said raceway and orbiting said shaft axis, said roller compressing the tube loop against said raceway when said tube loop is mounted in the raceway;
- a cartridge to which the tube loop is attached and mountable on the raceway, wherein said cartridge positions the tube loop between the track and roller when the cartridge is mounted on the raceway, and
- wherein the pump head further comprises a guide tab extending from a distal end head towards the track, wherein the guide tab prevents the tube loop from sliding beyond the distal end of the peristaltic pump roller.
3 more elements
A peristaltic pump comprising:
- a pump motor having a rotating motor shaft with a shaft axis;
- a peristaltic pump head mounted on the motor shaft;
- a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, said track having a beveled edge at an entrance to the raceway to receive a tube loop being loaded into the pump;
- said pump head further comprising at least one roller riding in said raceway and orbiting said shaft axis, said roller compressing the tube loop against said raceway when said tube loop is mounted in the raceway;
- a cartridge to which the tube loop is attached and mountable on the raceway, wherein said cartridge positions the tube loop between the track and roller when the cartridge is mounted on the raceway, and
- wherein said raceway includes a boss adjacent the semi-circular track and over which the cartridge is mounted and the boss defines inner sides of a pair of tube slots that intersect tangentially with the semi-circular track, and said cartridge when mounted on the boss positions the straight sections of the tube loop in each of the tube slots.
3 more elements
A peristaltic pump comprising:
- a pump motor having a rotating motor shaft with a shaft axis;
- a peristaltic pump head mounted on the motor shaft, wherein the pump head includes at least one roller in said raceway and orbiting the shaft axis, said roller compressing the tube loop against said raceway when a tube loop is mounted in the raceway;
- a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, said track being an entrance to a raceway to receive a the tube loop being loaded into the pump;
- wherein the pump head further comprises a guide tab at a rear end of the head and extending radially towards the track, wherein the guide tab has a surface facing the tube loop and said surface is forward of a plane defined by a rear end of the at least one roller, wherein said guide tab prevents the tube loop from sliding beyond the end of the roller.
1 more element
A peristaltic pump comprising:
- a pump motor having a rotating motor shaft with a shaft axis;
- a peristaltic pump head mounted on the motor shaft;
- a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, said track being an entrance to a raceway to receive a tube ioop being loaded into the pump and a cartridge to which the tube loop is attached and is mountable on the raceway, wherein the cartridge positions the tube loop between the track and roller and the said cartridge is mounted on the raceway, and the loop is inclined at an angle with respect to a plane of the cartridge.
Dependencies are inferred from the claim text.