Turbine wheel for a gas operated medical handpiece and medical handpiece having a turbine wheel, and method for milling a blade of a turbine wheel
AssigneeKaltenbach & Voigt GmbH & Co.
InventorsAlexander Flock, Helmut Gruber, Thomas Roesch
Life of this patent
Estimating the term…
Abstract
A turbine wheel for a gas operated medical handpiece includes a plurality of blades which extend in radial direction from a hub and extend in axial direction from a side ring web of the turbine wheel, and the front side of which is substantially concavely curved about an approximately radially running first axis of curvature. In order to increase the drive power or to better exploit the drive power at least one blade has at least in an axial end region an inclination surface which is inclined in the axial direction towards the front side.
Claims10
A turbine wheel for a gas operated medical handpiece, comprising:
- a plurality of blades which extend in radial direction from a hub and extend in an axial end region up to a ring recess in the turbine wheel, at least one blade having a front side which is substantially formed concavely in a secantial plane and in a radial plane, the front side having a partially spherical surface, and
- a rear side having, at least in an axial end region, an inclination surface which is inclined in the axial direction towards the front side.
A medical handpiece, comprising:
- an elongate grip part;
- a holder device for a tool rotatably mounted in a forward end region of the elongate grip part;
- a turbine wheel rotatably mounted in the handpiece and drivably connected to the holder device;
- and
- a delivery line for a gas that directs emerging gas flow against the turbine wheel;
- wherein the turbine wheel has a plurality of blades extending from a hub and a ring web connecting the plurality of blades along one side of the plurality of blades, another side of the plurality of blades remaining unattached to the ring web forming free blade ends, a front side of each blade being concavely curved about an approximately radially running first axis of curvature, a rear side of each blade being convexly curved toward the front side, the delivery line being directed against the front side of each blade and angled away from the free blade ends and the front side of each blade being hollow in radial direction.
Dependencies are inferred from the claim text.