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

Claim 27:
28. A device for shock wave production to treat a patient's body, comprising:
a base comprising a condenser and a switch configured to discharge a pulse of electric current;
an applicator configured to be coupled to the base, the applicator comprising:
an applicator cell with a cavity, the inside of the cavity comprising:
a single piezo-element having a volume in a range of 1.5 cm3 to 600 cm3 and attached to the applicator cell at the bottom of the cavity;
a conductive plate attached to the single piezo-element; and
a coil configured to be electrically connected in a series with the conductive plate and the switch,
wherein the single piezo-element is configured to provide a shock wave in response to the pulse of the electric current passing through the coil to the conductive plate based on a piezoelectric effect;
wherein the cavity is filled with a dielectric material having a flexural strength in a range from 10 MN·m−2 to 500 MN·m−2 and a tensile strength in a range of 10 MN·m−2 to 300 MN·m−2, configured to fix and to protect the single piezo-element inside the cavity; and

an acoustic lens having a radius of curvature in a range of 30 mm to 350 mm attached to the applicator cell below the single piezo-element and configured to focus the shock wave pulse to the patient's body;
wherein the shock wave has a full width at half maximum in a range of 0.1 μs to 30 μs and is configured to deliver a pressure to the patient's body in a range from 5 MPa to 250 MPa.