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AssigneeKUKA Laboratories GmbH
InventorsSebastian Lohmeier, Wolfgang Schober, Sven Brudniok
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A surgical instrument arrangement has a modular motor drive unit which has a drive arrangement having at least one output element, an instrument shaft that can be detachably connected to the drive unit, and a drive arrangement having at least one input drive element. The output drive arrangement and the input drive arrangement can be coupled to each other by a mechanical interface that has at least one single-sided linkage, a pin, and a cut-out, wherein the pin can be radially expanded in the cut-out. Alternatively, a gap may be formed between the pin and the cut-out, which gap is wavy in the radial direction, and in which a radially displaceable, axially fixed intermediate element arrangement is arranged. The surgical instrument arrangement may also include a sterile barrier, which is provided to envelop the drive unit and to be arranged between the drive unit and the instrument shaft.
A surgical instrument having a modular motor drive unit, which has an output drive assembly with at least one output drive element, which has an instrument shaft, which can be releasably connected to the drive unit, and one input drive assembly with at least one input drive element, wherein the output drive assembly and the input drive assembly can be coupled to one another by means of a mechanical interface, and having a sterile barrier, which is provided for encasing the drive unit, and is to be disposed between the drive unit and the instrument shaft, and having an, in particular pre-tensioned, cuff in the region of the mechanical interface in an adjustment direction of the output drive assembly and the input drive assembly, a seal that can be displaced translationally, a compensation means for compensating for tolerances and/or an element extension, which can be releasably connected to either an output drive element or an input drive element, which passes through the sterile barrier in a destructive manner.
Dependencies are inferred from the claim text.