Manipulator for an instrument for minimally invasive...

A - Human Necessities – 61 – B

Patent

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Details

A61B 19/00 (2006.01)

Patent

CA 2482160

A manipulator is provided for an instrument for minimally invasive surgery. The manipulator is provided with a main axis accommodated in a bearing for coupling the manipulator to a solid world, and is provided with a first moveable carriage, on which first carriage the instrument is detachably mounted. The first carriage is positioned on a first arm that connects to a parallelogram construction comprising the main axis, and a handle being placed on, or forming part of, a second arm connected to the parallelogram construction opposite the first arm. Both the instrument and the handle extend below the main axis such that a body axis of that handle always extends parallel to the instrument to provide the instrument with a fixed virtual pivoting point in the plane in which the instrument intersects the body of a patient. The fixed virtual pivot point lies on a virtual line in the extended direction of the main axis and allows pivoting of the instrument about three planes, in accordance with movement of said handle, whereby the fixed virtual pivot point remains fixed independent of the movements of the instrument and said handle.

L'invention concerne un manipulateur d'instrument de chirurgie effractive minimale, équipé d'un premier support mobile sur lequel l'instrument peut être monté. Le premier support mobile est placé sur un premier bras de construction parallélogrammique pour fournir à l'instrument un point d'articulation virtuel sur le plan au niveau duquel - pendant l'utilisation - l'instrument coupe le corps d'un patient. L'extrémité proximale du manipulateur est munie d'une poignée de manoeuvre de l'instrument. La poignée est placée sur, ou fait partie d'un second bras de la construction parallélogrammique opposé au premier bras, si bien qu'un axe du corps de la poignée s'étend toujours parallèlement à l'instrument.

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