Patent ID: 11911973
Assignee: FRESENIUS KABI DEUTSCHLAND GMBH
Field: Other special machines (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. Method to operate a sealing device (1) to seal a medical tubing (2), comprising:
receiving said medical tubing (2) in a receptacle (100), the receptacle (100) comprising an electrode arrangement for causing a welding action on the tubing (2), and
supplying an alternating electrical current to the electrode arrangement using a control circuitry (11) operatively connected to the electrode arrangement of the receptacle (100), the control circuitry (11) comprising an adjustable capacitor (C1) and a generator device (110),
characterized by applying, using a bias source (111) of the control circuitry (11), a DC bias voltage (V2) to said capacitor (C1), and using the generator device, the alternating electrical current to said capacitor, to adjust a capacitance value of the capacitor (C1) by a DC-bias effect.