Reciprocating rotary arthroscopic surgical instrument

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/32 (2006.01) A61B 17/28 (2006.01) A61B 18/14 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2464481

A surgical instrument (100) includes a cutting member (185) with an implement for cutting tissue, and a drive coupled to the cutting member (185). The drive (120, 130) may include a drive member (150) having a helical groove (156, 158) and being attached to the cutting member (185). Furthermore, the drive (120, 130) may include an inner drive hub (130) coupled to the drive member (150) such that the drive member (150) rotates with the inner drive hub (130) while being free to translate relative to the inner drive hub (130). The drive simultaneously rotates and translates the cutting member in response to a force applied to the drive.

L'invention concerne un instrument chirurgical (100) comprenant un élément de coupe (185) doté d'un outil permettant de couper un tissu et un entraînement couplé à l'élément de coupe (185). L'entraînement (120, 130) peut comprendre un élément d'entraînement (150) comprenant une rainure hélicoïdale (156, 158) et étant fixé sur l'élément de coupe (185). De plus, l'entraînement (120, 130) peut comprendre un moyeu d'entraînement interne (130) couplé à l'élément d'entraînement (150), de manière que celui-ci (150) tourne avec le moyeu d'entraînement interne (130) tout en étant libre d'effectuer une translation par rapport au moyeu d'entraînement interne (130). L'entraînement entraîne en rotation l'élément de coupe et le déplace de manière simultanée, en réponse à une force appliquée sur l'entraînement.

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