High efficiency medical transducer with ergonomic shape and...

A - Human Necessities – 61 – B

Patent

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Details

A61B 8/14 (2006.01) A61B 18/00 (2006.01) A61N 1/00 (2006.01)

Patent

CA 2480773

A transducer (8 or 10) assembly for an ultrasonic surgical instrument includes a front driver (14 or 22) having an elongate shaft extending in one direction and a stud (30 or 32) extending in an opposite direction. An electromechanical transducer (8 or 10) element is disposed around the stud (30 or 32). The transducer (8 or 10) assembly also comprises a rear driver (34 or 36) disposed around the stud (30 or 32) on a side of the electromechanical transducer (8 or 10) element opposite the front driver (14 or 22), the electromechanical transducer (8 or 10) elements being clamped between the front driver (14 or 22) and the rear driver (34 or 36). An inertial or damping mass (54) is fixedly connected to the stud (30 or 32) at a point spaced from the rear driver (34 or 36). The stud (30 or 32) is of a length and thinness to act as a flexible vibration damping element.

L'invention concerne un assemblage transducteur destiné à un instrument de chirurgie à ultrasons comprenant un amplificateur avant constitué d'un axe oblong orienté dans une direction et un goujon orienté dans la direction opposée. Un élément de électromécanique de transducteur est disposé autour du goujon. L'assemblage de transducteur comprend aussi un amplificateur arrière disposé autour du goujon sur un côté de l'élément électromécanique de transducteur opposé à l'amplificateur avant, l'élément électromécanique de transducteur étant pincé entre les amplificateurs avant et arrière. Une masse inertielle ou d'amortissement est fixée au goujon en un point éloigné de l'amplificateur arrière. Le goujon possède une longueur et une épaisseur lui permettant d'agir en tant qu'élément souple amortisseur de vibration.

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