US 12,560,159 B2 · Tube roller pump

Abstract

A peristaltic pump for extracorporeal blood treatment has a pump housing that accommodates a rotor. The rotor is rotatable about a rotor axis. The pump also includes at least two squeeze elements offset in a circumferential direction to each other. The pump housing has a support surface extending arc-shaped about the rotor axis and spaced radially from the rotor. The support surface is configured to support a tube segment inserted radially between the rotor and the support surface. In order to simplify the manual unthreading of the tube segment and thereby largely protect the tube segment, the peristaltic pump has a sliding edge arranged adjacent to the respective squeeze element against the rotational direction of the rotor, extends toward the support surface, is connected to the rotor in a rotationally fixed manner, and can be gripped from below by, or under reached by, the inserted tube segment.

Claims10

Dependent claims

A peristaltic pump for conveying fluid in a device for extracorporeal blood treatment, the peristaltic pump comprising:

a pump housing in which a rotor rotatable about a rotor axis with at least two squeeze elements offset in a circumferential direction to each other is accommodated and which has a support surface extending arc-shaped about the rotor axis and spaced radially from the rotor, wherein the support surface is configured to support a tube segment inserted radially between the rotor and the support surface;
and
a sliding edge which is arranged adjacent to a respective squeeze element and behind the respective squeeze element with respect to a forward rotational direction of the rotor, extends toward the support surface, is connected to the rotor to rotate about the rotor axis with the rotor, and is configured to be gripped from below or is under reached by the tube segment, wherein the sliding edge is located closer to the respective squeeze element than to a nearest adjacent squeeze element located behind the sliding edge with respect to the forward rotational direction of the rotor, wherein each sliding edge is a component overlapping the at least two squeeze elements.

A peristaltic pump for conveying fluid in a device for extracorporeal blood treatment, the peristaltic pump comprising:

a pump housing having a bed surface and a support surface extending from the bed surface, the support surface comprising an arc shape surrounding a rotation axis;
and
a rotor mounted to the pump housing to rotate about the rotation axis, the rotor comprising:
a plurality of squeeze elements offset to each other in a circumferential direction about the rotation axis and extending away from the rotation axis;
and
a plurality of sliding edges, wherein each sliding edge:
is arranged adjacent to a respective squeeze element and behind the respective squeeze element with respect to a forward rotational direction of the rotor,
extends away from the rotation axis, and
is spaced from the bed surface such that a tube segment located between the respective squeeze element and the support surface is located between the sliding edge and the bed surface;
wherein each sliding edge is located closer to the respective squeeze element than to a nearest adjacent squeeze element located behind the sliding edge with respect to the forward rotational direction of the rotor, wherein each sliding edge is a component overlapping the at least two squeeze elements.

7 more elements

Dependencies are inferred from the claim text.

Tube roller pump

Life of this patent

Tube roller pump

Life of this patent

Abstract

Claims10