The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 1997
Filed:
May. 24, 1996
Applicant:
Inventors:
Chikao Yazawa, Kanuma, JP;
Takasuke Nakanishi, Kanuma, JP;
Assignee:
Nakanishi, Inc., Tochigi-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
606170 ; 606180 ;
Abstract
A surgical handpiece contains a spindle detachably holding an elongate bar for surgical operation and transmitting rotation to the bar, an elongate sheath covering the bar except for the distal portion thereof, and a plurality of balls provided in the proximity of the distal end of the sheath, with the balls being arranged in one cross-sectional plane. The balls have a diameter approximately equal to a thickness of the sheath in the proximity of the distal end thereof, and the balls are projected slightly radially inwardly from the inner surface of the sheath with the peripheral surface of the ball being spaced from the bar.