Device for longitudinally driving a tool
OwnerRichard E. Arneggerinventor
Life of this patent
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Abstract
The present invention relates to a manual tool device, preferably used for surgical operations on bones, of longitudinal shape and to a method for making the same, the device assembly and arrangement, in particular the gearing section by which the driving force of an electrical motor is operatively transmitted to the tool through a gearing mechanism, and the weight of the device provides a well balanced device that is easy to work with in a highly precise manner. The method to produce the manual device represents a simple and rational way of manufacture.
Claims10
Manual device for surgical operation on bones, the device of longitudinal shape and an outer surface of cylindrical cross-section adapted to move a tool parallel to the longitudinal axis of the device, an electrical micro motor with a drive shaft and a gear section arranged between the tool and the drive shaft, characterized in that in the interior of the device there is disposed the micro motor and the drive shaft arranged coaxially to the longitudinal axis of the device;
- that a tool holding means adapted to removably maintain a tool is pivotally coupled with a connecting rod, the latter being pivotally coupled with two cranks, each being carried by a crankshaft and each being of cylindrical form and their axes being parallel and eccentric to a crank shaft axis common to said crankshaft;
- that the common crank shaft axis is perpendicular to the longitudinal axis of the device;
- that the crankshafts are borne in bores arranged in a wall of the gear section and on either side of an opening in the wall of said gear section and opposite each other with respect to the longitudinal axis of the device;
- that the two crank shafts are coupled with the drive shaft by means of a first gear wheel having a rotational axis coinciding with the longitudinal axis of the device and by means of a second gear wheel having a rotational axis coinciding with the crank shaft axis;
- that the two cranks, in the direction of the crank shaft axis, are separated from each other;
- that the second gear wheel is fixed with the one of the crank shafts;
- and that said gear section is covered by a cylindrical protective coat.
Dependencies are inferred from the claim text.