Patent ID: 11864782
Assignee: BTL MEDICAL SOLUTIONS A.S.
Field: Medical technology (Instruments)
Classification: CPC A  B  G | IPC A  B  G

Claim 22:
23. A device for shock wave production to treat a patient's body, comprising:
a condenser and a switch configured to discharge a high voltage pulse of electric current;
an applicator comprising:
an applicator cell comprising a cavity;
a coil positioned inside the cavity and configured to be coupled to the condenser and the switch on an input of the coil;
a conductive plate positioned inside the cavity and connected to an output of the coil;
a large piezo-element having a diameter in a range of 1 cm to 20 cm positioned inside the cavity and coupled to the conductive plate and attached to the applicator cell at the bottom of the cavity;
wherein the cavity is filled with a dielectric material having a dielectric constant in a range from 1.0005 to 2000 and dielectric strength in a range of 1 kV·mm−1 to 90 kV·mm−1 configured to fix and increase durability of the large piezo-element inside the cavity;
wherein the applicator cell is configured to provide a shock wave in response to the high voltage pulse of the electric current passing through the coil to the conductive plate and the large piezo-element, with a duration of created shock wave pulse in a range of 200 ns to 30 μs; and

an acoustic lens having an acoustic impedance in a range from 10·106 kg·m−2·s−1 to 46·106 kg·m−2·s−1 and configured to be attached to the applicator cell below the single piezo-element and configured to focus the shock wave pulse to the patient's body such that a pressure delivered to the patient's body is in a range from 5 MPa to 250 MPa.