Integra Lifesciences (ireland) Ltd.

Matthew F Shinopulos

Daniel J Cotter

James P O'Connor

Saurav V Gupta

Maria Benson

Amin Kassam

An ultrasonic horn for use with an ultrasonic surgical hand piece including a resonator comprises a contacting annulus having a plurality of angled lands. The lands are alternated around the annulus such that adjacent lands have opposite angles. As a result of the adjacent angled lands, a shear stress field is developed in contacted tissue due to the promotion of refracted longitudinal ultrasonic waves propagating in different directions at the interface to the coupled tissue. The shear stress field enhances the fragmentation and removal rate of fibrous, elastic, and tenacious tissue. The horn is hollow permitting suction to be applied to the tissue for controlling tissue contact with the lands.

Method of creating a shear stress field with medical device

Method of applying shear stress

Ultrasonic horns configured for use with a surgical ultrasonic handpiece including a resonator are described. The ultrasonic horns include an elongated member having a longitudinal internal channel extending therethrough. Disposed on the distal end of the elongated member is a tip lead configured for cutting and/or abrading hard tissue, for example bone. The tip lead includes an abrasive surface.

Bone abrading ultrasonic horns

Shear stress ultrasonic horn for ultrasonic surgical aspiration

Ultrasonic horns configured for use with a surgical ultrasonic handpiece including a resonator are described. The ultrasonic horns include an elongated member having a longitudinal internal channel extending partially therethrough. Disposed on the distal end of the elongated member is a chisel and awl shaped tip configured for cutting and/or abrading hard tissue, for example bone.

Ultrasonic horn for removal of hard tissue

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Burlington, MA, United States of America

Matthew F Shinopulos