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US 5,478,093 AGranted
Surgical handpiece
AssigneeDentalwerk Burmoos Gesellschaft m.b.H.
InventorsJohann Eibl, Gunter Teufelberger, Johann Fersterer
Life of this patent
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AssigneeDentalwerk Burmoos Gesellschaft m.b.H.
InventorsJohann Eibl, Gunter Teufelberger, Johann Fersterer
Estimating the term…
A handpiece for use in small-scale surgery and microsurgery, for example, oral surgery or surgery in the ear, nose and throat area includes a handpiece sleeve and a collet chuck which is rotatable about an axis and is arranged in the handpiece sleeve. The collet chuck is spring-biased and can be released by an actuating member. The collet chuck serves to hold a tool and is composed of two tubular members which are movable relative to each other along the axis of rotation of the collet chuck. A chucking lever for releasing the collet chuck is pivotable about a lever axis which is directed essentially in normal direction relative to the collet chuck axis. The actuating member includes a drive member which is movable in axial direction together with the two tubular members of the collet chuck, but does not rotate together with the tubular members. The drive member projects with a portion thereof in direction of the collet chuck axis into an undercut portion of the chucking lever.
A handpiece for use in small-scale surgery or microsurgery, for example, oral surgery or surgery in the ear, nose and throat area, the handpiece comprising a handpiece sleeve, a collet chuck rotatably mounted in the handpiece sleeve, the collet chuck comprising two tubular members, the two tubular members being displaceable relative to each other along an axis of rotation of the collet chuck, an actuating member comprising a chucking lever for releasing the collet chuck, the chucking lever being pivotable about a lever axis extending essentially in normal direction relative to the axis of rotation of the collet chuck, the actuating member further comprising a non-rotatable drive member, the drive member being displaceable in axial direction together with the two tubular members of the collet chuck, the chucking lever having an undercut portion, the drive member having a portion projecting in the direction of the axis of rotation of the collet chuck into the undercut portion of the chucking lever.
Dependencies are inferred from the claim text.