Surgical cutting instrument

Details Surgical cutting instrument Surgical cutting instrument

A - Human Necessities

61

B

A61B 17/32 (2006.01)

Patent

CA 2567638

A surgical cutting instrument including a first elongated member (40), a second tubular member (34), a handpiece (31), a first hub (50), a second hub (90), and an actuator assembly (38). The first tubular member has cutting tip and is co-axially disposed within the second tubular member such that the cutting tip is exposed at a cutting window (46). The first hub is mounted to the first tubular member and is moveably coupled to the handpiece. The second hub is mounted to the second tubular member and defines a hub axis. The actuator assembly rotatably couples the second hub to the handpiece and includes an actuator. Movement of the actuator is translated to rotational movement of the second hub so as to effectuate spatial rotation of the cutting window. In this regard, the actuator movement is not co-axial with the hub axis.

L'invention concerne un instrument chirurgical tranchant comprenant un premier élément oblong (40), un second élément tubulaire (34), une pièce à main (31), un premier moyeu (50), un second moyeu (90) et un ensemble d'actionnement (38). Le premier élément tubulaire comporte une pointe tranchante et est placé de façon coaxiale dans le second élément tubulaire de sorte que la pointe tranchante soit exposée à une fenêtre de coupe (46). Le premier moyeu est monté sur le premier élément tubulaire et est couplé mobile par rapport à la pièce à main. Le second moyeu est monté sur le second élément tubulaire et définit un axe de moyeu. L'ensemble actionneur couple de façon rotative le second moyeu à la pièce à main et comprend un actionneur. Le mouvement de l'actionneur est converti en mouvement rotationnel du second moyeu de manière à effectuer une rotation spatiale de la fenêtre de coupe. A cet égard, le mouvement de l'actionneur n'est pas coaxial à l'axe de moyeu.

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