Medical apparatus for the non-invasive transmission of focused shear waves to impact cellular behaviour

A medical apparatus suitable for treating cancer cells of a subject comprising at least one transducer with a vibrating surface that generates torsional shear waves and a controller for controlling vibration of the at least one transducer,

• wherein the at least one transducer further comprises an applicator for attaching the vibrating surface to an outer surface of the subject,
• wherein the controller is configured to control the at least one transducer to vibrate at a frequency of about 10 Hz, generating torsional shear waves having an amplitude between 1 and 20 milliradians,
• wherein the controller is operable for causing the at least one transducer to vibrate for greater than a predetermined period of time for treating the cancer cells,
• wherein the predetermined period of time is greater than one hour,
• wherein the torsional shear waves are axisymmetric torsional shear waves and
• wherein the at least one transducer is an electromagnetically driven transducer,
• wherein the at least one transducer comprises a vibrating surface which in turn comprises a disc or ring-shaped element attached to an electromagnetic device that converts electrical signals into rotational motion, the disc or ring-shaped element configured to oscillate to generate the torsional shear waves.