| 摘要 |
The invention is the procedure and device for establishing patency and maintaining the patency of draining tubing especially in medicine and biomedical experimentation. The invented procedure is based on periodic massaging (peristaltic forcing) of the contents within the elastic section of the tubing using a peristaltic pump and leaving the inside diameter of the tubing open between pumping cycles. The invented device is a peristaltic pump which clamps the inside diameter of the tubing only during forcing cycles and allows a free flow of the contents between cycles. This device is a rotational peristaltic pump with an elastic tubing (1) placed on tubing bed (2) of the pump forming an arc lesser than 360 degrees and a rotor (4) containing one roller (3), which periodically forces the contents of the tubing. Another device is a rotational peristaltic pump with a rotor (4) containing at least two rollers (3), in which the length of the tubing possibly contacting the rollers directly and thus being squeezed is lesser than the length of the greatest arc between neighboring rollers of the rotor. Yet another device is a peristaltic compression pump with two clamps (6, 7). |
