Patent ID: 11872383
Assignee: FORQALY MEDICAL(SHANGHAI) CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A  F | IPC A  F

Claim 6:
7. A method for controlling the flexible shaft structure insulating wear particles by perfusion according to claim 1, comprising the steps of:
connecting the perfusion inlet pipeline (11) at the proximal end of the flexible transmission shaft (1) with a perfusion pump, passing the distal end of the flexible transmission shaft (1) through the perfusion insulation cavity (10) and then connecting with a blood pump;
before use, opening the perfusion exhaust pipeline (12), injecting a perfusate into the perfusion inflow annular cavity (7) through the perfusion inlet pipeline (11) with the perfusion pump, and then into the perfusion insulation cavity (10); enabling some of the perfusate in the perfusion insulation cavity (10) to enter and fill the static sealed inner cavity (6) and to be discharged through the perfusion exhaust pipeline (12) finally, and the rest of the perfusate to enter the blood pump through the flexible transmission shaft (1);
during use, closing the perfusion exhaust pipeline (12), enabling all the perfusate in the perfusion insulation cavity (10) to enter the blood pump instead of entering the static sealed inner cavity (6), and monitoring a pump-out flow of a single perfusion pump, which is a total volume of the perfusate entering a patient; and
during use, keeping the perfusion exhaust pipeline (12) closed to increase a hydraulic pressure in the perfusion insulation cavity (10), so that the perfusate in the static sealed inner cavity (6) is prevented from flowing out and thus generated wear particles are retained in the static sealed inner cavity (6).