Tube roller pump including a pivotable tube support and medical device for extracorporeal blood treatment

摘要

Medical devices for extracorporeal blood treatment including tube roller pumps. Tube roller pumps including a pump housing having a bent bearing surface and a rotor being rotatable inside the bearing surface, wherein a tubing segment can be introduced between the bearing surface and the rotor in the form of a loop. A stationary first receiving portion for accommodating one end of the loop-shaped tubing segment and a rocker arm including a second receiving portion for accommodating the other end of the loop-shaped tubing segment is located at the pump housing, wherein the rocker arm is rotatable about a pivoting axis so that the second receiving portion with the tubing segment can be brought into at least two different positions and that a first position represents a threading position and a second position represents an unthreading position for the tubing segment.

主权项

1. A tube roller pump for a medical device for extracorporeal blood treatment comprising a pump housing having a bent bearing surface and a rotor rotatable inside the bearing surface, to receive a tubing segment between the bearing surface and the rotor in the form of a loop, wherein
a fixed first receiving portion configured to accommodate a first end of the loop-shaped tubing segment such that the first end of the loop-shaped tubing segment is held in place within the fixed first receiving portion, the fixed first receiving portion provided at the pump housing, and a rocker arm provided at the pump housing and spaced from the fixed first receiving portion, wherein the rocker arm is configured to rotate about a pivoting axis, the rocker arm includes a second receiving portion configured to accommodate a second end of the loop-shaped tubing segment, such that the second end of the loop-shaped tubing segment is held in place within the second receiving portion, and such that the second receiving portion and the second end of the loop-shaped tubing segment are configured to rotate about the pivoting axis with the rocker arm, such that the second end of the loop-shaped tubing segment is configured to rotate into at least a first position and a second position about the pivoting axis while the first end of the loop-shaped tubing segment is held stationary within the fixed first receiving portion, and the first position constitutes a threading position and the second position constitutes an unthreading position for the tubing segment.