Torsional ultrasound generator for orthopaedic procedures

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United States of America Patent

PATENT NO 11583308
SERIAL NO

16478429

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Abstract

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Apparatus for generating torsional-mode ultrasonic vibrations, for example in a surgical tool, comprises an ultrasonic transducer that would conventionally produce longitudinal-mode ultrasonic vibrations, with a long, hollow, cylindrical, mode converter mounted coaxially to its distal end. A plurality of holes are formed through the walls of the mode converters. These holes are arranged in multiple parallel helical rows, extending along and around the cylindrical mode converters. Holes within the same row are spaced relatively closely, compared with the spacing between rows. Relationships have been established between the hole diameter (d), the spacing between rows (W), the spacing between holes in the same row (l), the spacing between individual holes in adjacent rows (L), and the overall diameter of the mode converter (D). In a preferred version, the holes through the walls of the second mode converter are tapered inwardly, rather than being cylindrical holes as in the first mode converter.

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Patent Owner(s)

Patent OwnerAddress
RADLEY SCIENTIFIC LIMITEDSOUTH DEVON TQ13 7JX

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Badcott, Sean Martin Paignton, GB 3 1
Young, Michael John Radley Ashburton, GB 34 3025
Young, Stephen Michael Radley Newton Abbot, GB 23 2304

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