Endodontic instrument
AssigneeIPCO Corporation
InventorsAlan Miller, Edward E. Schweizer, John Campanello
Life of this patent
Estimating the term…
Abstract
An endodontic instrument is described which includes a handle from which extends an endo blade. The handle includes an elongated sleeve member formed of resilient material which surrounds a core member secured within the sleeve member. The core member has a longitudinal body portion radially spaced from the inner walls of the sleeve to define therebetween a flexure space for accommodating the deformation of the sleeve member upon gripping of the handle during use of the instrument. Preferably, the sleeve member is provided with gripping ribs thereon.
Claims18
An endodontic instrument comprising:
- a handle;
- a blade extending outwardly from a front end portion of said handle;
- connecting means securing said blade in said front end portion of said handle for rotating said blade and said handle together;
- said handle including an elongated sleeve member and a core member disposed within said sleeve member;
- said sleeve member including a forward end and a tail end with a central section disposed between said forward and tail ends, said central section being hollow to provide a hollow interior therein, said tail end having an axial opening therethrough communicating with said hollow interior;
- said core member including a longitudinal body portion having a head portion at one end and an enlarged base portion at an opposite end thereof;
- said body portion being disposed in said hollow interior of said sleeve member with said body portion being radially spaced from inner walls of said sleeve member to define therebetween a flexure space for accommodating deformation of said sleeve member upon gripping thereof during use of the instrument;
- engagement means for securing said head portion of said core member at said forward end of said sleeve member to prevent longitudinal movement between said head portion and said forward end;
- said tail end of said sleeve member being free and resting on said base portion of said core member which is disposed within said axial opening of said tail end so that said tail end is free to ride along said base portion during said deformation of said sleeve member;
- and
- said sleeve member including resilient means for permitting said central section to be radially inwardly deformed into said flexure space towards said core member.
An endodontic instrument as in claim 4, wherein said end cap further includes at least one axial passageway extending therethrough to accommodate passage of a string-like member which is looped around said body portion of said core member and is passed outwardly of said sleeve member through said axial passageway.
An endodontic instrument comprising:
- a handle;
- a blade extending outwardly from a front end portion of said handle;
- connecting means securing said blade in said front end portion of said handle for rotating said blade and said handle together;
- said handle including an elongated sleeve member and a core member disposed within said sleeve member;
- said sleeve member including a forward end and a tail end with a central section disposed between said forward and tail ends, said central section being hollow to provide a hollow interior therein, said tail end having an axial opening therethrough communicating with said hollow interior;
- said core member including a longitudinal body portion having a forward end portion and an enlarged base portion at an opposite end thereof;
- said body portion being disposed in said hollow interior of said sleeve member with said body portion being radially spaced from inner walls of said sleeve member to define therebetween a flexure space for accommodating deformation of said sleeve member upon gripping thereof during use of the instrument;
- engagement means for securing said base portion of said core member within said axial opening of said tail end of said sleeve member to prevent longitudinal movement between said base portion and said tail end;
- said forward end of said sleeve member including floating connection means for securing said core member to permit longitudinal movement therebetween so that said sleeve member can be deformed radially towards said core member, said floating connection means including a receptacle provided on said forward end, said receptacle extending into said hollow interior, said forward end portion of said core member being longitudinally movably received in said receptacle;
- and
- said sleeve member including resilient means for permitting said central section to be radially inwardly deformed into said flexure space towards said core member.
Dependencies are inferred from the claim text.