Abstract: A surgical instrument configured to be coupled to an ultrasonic oscillation mechanism for resection of tissue under suction. A tip extends from a shaft and includes teeth formed by slots. Each of the teeth includes a distal end, a distal cutting edge, and a side cutting edge. The distal cutting edge and the side cutting edge are configured to slice the tissue with the tip moving in a first direction of combined longitudinal and torsional vibration and pull the tissue with the tip moving in the second direction opposite the first direction. An intersection of an outer edge, the distal cutting edge, and the side cutting edge defines a sharp cutting point at the distal end. A sloped surface defining the slot maintains coupling of the tip with the tissue with suction during resection of the tissue with the distal cutting edge and the side cutting edge.

Abstract: A tubing connector for integrally connecting an irrigation line, an aspiration line, and a conductor to a proximal portion of an ultrasonic surgical handpiece. The tubing connector includes a base including proximal and distal regions. First and second lumens through the base each extends from the proximal region to the distal region to create respective first and second fluid pathways to the proximal portion of the handpiece. The first lumen includes a first coupler proximate the base proximal region configured to receive the irrigation line, and the second lumen includes a second coupler proximate the base proximal region configured to receive the aspiration line. The base defines a groove in an outer perimeter that extends between the proximal and distal regions and is configured to receive the conductor. The tubing connector is configured to reduce strain of the irrigation line and the aspiration line when coupled to the handpiece.

Abstract: The present disclosure relates to an ultrasonic surgical handpiece assembly comprising a surgical handpiece for use with an irrigation sleeve and ultrasonic tip. The surgical handpiece may comprise a piezoelectric transducer disposed within a housing and configured to manipulate the ultrasonic tip. One or more lumens and/or a flex circuit including an antenna may be disposed within the surgical handpiece housing. The lumen(s) may be configured to provide irrigation and/or aspiration to the irrigation sleeve and/or ultrasonic tip. The irrigation sleeve may comprise a second antenna configured to communicate with the ultrasonic handpiece antenna. The irrigation sleeve may further comprise and an alignment and/or coupling feature configured to removably secure the irrigation sleeve to the housing and orient the second antenna relative to the ultrasonic handpiece antenna. The irrigation sleeve may further comprise a lumen for supplying irrigation and/or aspiration to the ultrasonic tip.

Abstract: An ultrasonic tip for use with a surgical handpiece to produce both longitudinal and torsional motion. The ultrasonic tip comprises a shaft having a longitudinal axis extending between proximal and distal ends having respective first and second diameters with the first diameter greater than the second diameter. The ultrasonic tip also comprises a cutting feature coupled to the distal end of the shaft. The shaft defines an aspiration lumen that extends along the longitudinal axis of the shaft. A protrusion on the shaft is positioned between the distal end and the proximal end of the shaft. A portion of the protrusion having a third diameter, and the third diameter is less than the first diameter and the third diameter is greater than the second diameter. An aperture is defined by the protrusion and in fluid communication with the aspiration lumen, and the protrusion reinforces an area surrounding the aperture.

Abstract: A surgical instrument configured to be coupled to an ultrasonic oscillation mechanism for resection of tissue under suction. A tip extends from a shaft and includes teeth formed by slots. Each of the teeth includes a distal end, a distal cutting edge, and a side cutting edge. The distal cutting edge and the side cutting edge are configured to slice the tissue with the tip moving in a first direction of combined longitudinal and torsional vibration and pull the tissue with the tip moving in the second direction opposite the first direction. An intersection of an outer edge, the distal cutting edge, and the side cutting edge defines a sharp cutting point at the distal end. A sloped surface defining the slot maintains coupling of the tip with the tissue with suction during resection of the tissue with the distal cutting edge and the side cutting edge.

Abstract: An ultrasonic tip for fibrous tissue removal. The ultrasonic tip may be configured for at least torsional vibration and coupled to a distal end of a shaft of a surgical instrument with the shaft including a vibration conversion mechanism. The ultrasonic tip includes a plurality of slots extending between inner and outer circumferential surfaces to form a plurality of teeth. A depth of one of the slots at the outer circumferential surface is greater than a depth of the slot at the inner circumferential surface to define a sloped surface. The teeth include a cutting edge defined between the outer circumferential surface and a side surface defining the slot. The cutting edge includes a positive rake angle. The teeth may further include an inner cutting edge defined between the sloped surface and the inner circumferential surface with the inner cutting edge having a positive rake angle.

Abstract: The present disclosure relates to an ultrasonic surgical handpiece assembly comprising a surgical handpiece for use with an irrigation sleeve and ultrasonic tip. The surgical handpiece may comprise a piezoelectric transducer disposed within a housing and configured to manipulate the ultrasonic tip. One or more lumens and/or a flex circuit including an antenna may be disposed within the surgical handpiece housing. The lumen(s) may be configured to provide irrigation and/or aspiration to the irrigation sleeve and/or ultrasonic tip. The irrigation sleeve may comprise a second antenna configured to communicate with the ultrasonic handpiece antenna. The irrigation sleeve may further comprise and an alignment and/or coupling feature configured to removably secure the irrigation sleeve to the housing and orient the second antenna relative to the ultrasonic handpiece antenna. The irrigation sleeve may further comprise a lumen for supplying irrigation and/or aspiration to the ultrasonic tip.

Abstract: An ultrasonic tip for fibrous tissue removal. The ultrasonic tip may be configured for at least torsional vibration and coupled to a distal end of a shaft of a surgical instrument with the shaft including a vibration conversion mechanism. The ultrasonic tip includes a plurality of slots extending between inner and outer circumferential surfaces to form a plurality of teeth. A depth of one of the slots at the outer circumferential surface is greater than a depth of the slot at the inner circumferential surface to define a sloped surface. The teeth include a cutting edge defined between the outer circumferential surface and a side surface defining the slot. The cutting edge includes a positive rake angle. The teeth may further include an inner cutting edge defined between the sloped surface and the inner circumferential surface with the inner cutting edge having a positive rake angle.