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US 9,989,132 B2Granted
Drive device for medical or dental tool
AssigneeW&H Dentalwerk Bürmoos GmbH
InventorsKarlheinz Eder, Michael Rothenwaender, Josef Spitzauer
Life of this patent
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Abstract
Various mechanical drive devices, mechanical gears, combinations thereof and medical or dental treatment devices with such mechanical drive devices or gears are described. The mechanical drive devices and mechanical gears convert a unidirectional rotational movement received by a motor drive into a multidirectional movement, so that a tool-holding device of the treatment device can be induced to a multidirectional movement, in particular to a, preferably simultaneous, lifting and rotating movement or to a lifting and oscillating rotational movement with a reduced rotational speed.
Claims20
A drive device for a medical or dental tool, comprising:
- a drive shaft arrangement designed to transmit a unidirectional rotational movement;
- an output shaft designed to induce an oscillating rotational movement of the tool, wherein the oscillating rotational movement comprises an alternating rotation of the tool about a first angle of rotation in a first direction of rotation and about a second angle of rotation in a second direction of rotation, wherein the second direction of rotation is substantially opposite the first direction of rotation, and wherein the first angle of rotation and the second angle of rotation differ in magnitude from each other;
- and
- a mechanical gear drive assembly driveable by the drive shaft arrangement and configured to convert the unidirectional rotational movement transmitted by the drive shaft arrangement into the oscillating rotational movement and to transmit the oscillating rotational movement to the output shaft,
- wherein the mechanical gear drive assembly comprises a first element for converting the unidirectional rotational movement transmitted by the drive shaft arrangement into an oscillating pendulum movement, and a second element for transmitting the unidirectional rotational movement which is a part of the resulting output oscillating rotational movement.
2 more elements
A drive device for a medical or dental tool, comprising:
- at least one drive shaft designed to transmit a unidirectional rotational movement;
- at least one output shaft designed to induce an oscillating rotational movement of the tool, wherein the oscillating rotational movement comprises an alternating rotation of the tool about a first angle of rotation in a first direction of rotation and about a second angle of rotation in a second direction of rotation, wherein the second direction of rotation is substantially opposite the first direction of rotation, and wherein the first angle of rotation and the second angle of rotation differ in magnitude from each other;
- and
- a mechanical gear drive assembly driveable by the at least one drive shaft and configured to convert the unidirectional rotational movement transmitted by the at least one drive shaft into the oscillating rotational movement and to transmit the oscillating rotational movement to the at least one output shaft, wherein the mechanical gear drive assembly comprises
- a pin and a receptacle for said pin to continuously and movably hold the pin within said receptacle;
- and
- a plurality of gearwheels, wherein the pin, the receptacle for said pin and the plurality of gearwheels are operatively interconnected such that the unidirectional rotational movement transmitted by the at least one drive shaft is converted into the oscillating rotational movement.
4 more elements
A drive device for a medical or dental tool, comprising:
- at least one drive shaft designed to transmit a unidirectional rotational movement;
- at least one output shaft designed to induce an oscillating rotational movement of the tool, wherein the oscillating rotational movement comprises an alternating rotation of the tool about a first angle of rotation in a first direction of rotation and about a second angle of rotation in a second direction of rotation, wherein the second direction of rotation is substantially opposite the first direction of rotation, and wherein the first angle of rotation and the second angle of rotation differ in magnitude from each other;
- and
- a mechanical gear drive assembly driveable by the at least one drive shaft and configured to convert the unidirectional rotational movement transmitted by the at least one drive shaft into the oscillating rotational movement and to transmit the oscillating rotational movement to the at least one output shaft, wherein the mechanical gear drive assembly comprises
- a pin and a receptacle for said pin to continuously and movably hold the pin within said receptacle;
- and
- a plurality of gearwheels, wherein the pin, the receptacle for said pin and the plurality of gearwheels are operatively interconnected such that an oscillating, pivoting movement generated by the pin and the receptacle for said pin is transmitted to at least one gearwheel of the plurality of gearwheels in order to obtain the oscillating rotational movement and to the at least one output shaft.
4 more elements
Dependencies are inferred from the claim text.