Hand piece for powered osteotome
AssigneeHenry Schein, Inc.
InventorsBrian David PARLATO, Alfred Anthony LITWAK
Life of this patent
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Abstract
Provided is an osteotome handpiece that may be driven by compressed gas. In an embodiment, a spherical piston may be movable inside a cylinder having a liner, which may be made of a low-friction material such as a fluoropolymer. The spherical piston may impact a blade holder that transmits force to a blade. A piston return spring may be provided, along with a piston washer to avoid any possible outward deformation of the spring. The blade holder may be retained by a split and threaded retaining collar. Single-stroke or multi-stroke operation may be chosen by the user. The device has long-operating low-maintenance advantages.
Claims23
An osteotome, comprising:
- an osteotome body having a handle region configured to be gripped by a user;
- a piston region within the osteotome body and comprising a cylinder defining a circular bore and an axial length,
- a spherical piston comprising a single spherical body configured for reciprocating translational motion within the cylinder, and wherein the spherical body of the piston is free to rotate about any of its axes during its reciprocating translational motion within the cylinder;
- and
- a blade holder configured for removable engagement of a blade, and wherein the reciprocating translational motion of the spherical piston within the cylinder is operable to transmit force to the blade holder.
Dependencies are inferred from the claim text.