Folded ultrasonic end effectors with increased active length

A - Human Necessities – 61 – B

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Details

A61B 17/32 (2006.01) A61B 17/22 (2006.01) G10K 11/24 (2006.01)

Patent

CA 2707195

An end effector for use with an ultrasonic surgical instrument. A body extends along a longitudinal axis. The body includes a proximal end and a distal end. The proximal end of the body is configured to couple to an ultrasonic transducer configured to produce vibrations at a predetermined frequency. A folded element includes a first end coupled to the distal end of the body at a predetermined region between a node and an antinode. The folded element extends along the longitudinal axis from the distal end to the proximal end of the body. The folded element comprises a second free acoustic end. A distal portion of the body and the folded element define a parallel acoustic path.

L'invention concerne un organe terminal effecteur pour une utilisation avec un instrument chirurgical ultrasonique. Un corps s'étend le long d'un axe longitudinal. Le corps comprend une extrémité proximale et une extrémité distale. L'extrémité proximale du corps est configurée pour se coupler à un transducteur ultrasonique configuré pour produire des vibrations à une fréquence prédéterminée. Un élément replié comprend une première extrémité couplée à l'extrémité distale du corps dans une région prédéterminée entre un nud et un ventre. L'élément replié s'étend le long de l'axe longitudinal de l'extrémité distale à l'extrémité proximale du corps. L'élément replié comporte une seconde extrémité acoustique libre. Une partie distale du corps et l'élément replié définissent un trajet acoustique parallèle.

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