Electric Motor Arrangement for a Medical, Especially Dental, Tool Holder
AssigneeKaltenbach & Voigt GmbH & Co.
InventorsJosef Duesing, Alfons Mader, Johann Stempfle
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Abstract
An electric motor arrangement for a medical, especially dental, tool handle, which is extremely compact and resistant to sterilizing temperatures due to a plurality of advantageous embodiments. The electric motor arrangement is characterized by the following properties: the use of a light source based on SMD-LED or LED as a semiconductor chip; the shortening of the INTRAmatic coupling to between 20 mm and 25 mm; a hermetically extruded stator comprising integrated media tubes and molded connection sockets; the stator winding is embodied as a coil segment winding instead of an H winding or triangle; and the winding head has openings for media tubes.
Claims22
An electric motor arrangement for a medical handpiece, comprising
- a rotor with a rotor shaft,
- a stator arranged around the rotor with respect to the rotor shaft,
- a medium tube for guiding a medium through it,
- and
- a sheath element formed by encapsulation by injection molding, said sheath element, with respect to the rotor shaft, surrounding both the stator and the medium tube tightly in a closed manner in a ring-shaped manner from outside.
An electric motor arrangement for a medical handpiece, comprising
- a rotor (R) with a rotor shaft, which is mounted in a manner rotatable about a longitudinal axis (L), and
- a light source,
- wherein the light source has an LED arranged on a carrier element for electronic components wherein the carrier element is arranged in such a way that its extent with respect to the longitudinal axis in a radial direction is greater than its extent in an axial direction.
An electric motor arrangement for a medical handpiece, having
- a rotor with a rotor shaft, which is arranged to be mounted rotatably about a longitudinal axis, and
- a coupling pin for connection to the handpiece,
- wherein the coupling pin has a length in the direction of the longitudinal axis wherein the length is less than 35 mm.
An electric motor arrangement for a medical handpiece, comprising
- a rotor shaft mounted rotatably about a longitudinal axis by means of two bearings,
- a single-piece motor housing surrounding the two bearings radially from outside with respect to the rotor shaft, and
- a coupling pin for connection to the handpiece, wherein the coupling pin and the motor housing are embodied in integral fashion.
Dependencies are inferred from the claim text.