Endodontic instrument for accessing a pulp chamber
AssigneeEssential Dental Systems, Inc.
InventorAllan S. Deutsch
Life of this patent
Estimating the term…
Abstract
An endodontic instrument for accessing a pulp chamber of a molar includes an elongated shaft having an upper end and a lower end and a stop fixed to the shaft at a distance between 6–8 mm from the lower end. The instrument also includes a cutting head located along the shaft adjacent the lower end. In certain embodiments, the cutting head has an annular cutting surface extending about a first circumferential portion of the cutting head and a flat non-cutting surface extending about a second circumferential portion of the cutting head. The lower end of the shaft may have a pointed tip.
Claims22
An endodontic instrument comprising:
- an elongated shaft having an upper end and a lower end;
- a stop permanently fixed to said shaft at a distance between 6–8 mm from said lower end;
- a cutting head located along said shaft adjacent said lower end, wherein said cutting head has an annular cutting surface extending about a first circumferential portion of said cutting head and a flat non-cutting surface extending about a second circumferential portion of said cutting head.
An endodontic instrument adapted for accessing a pulp chamber of a molar comprising:
- an elongated shaft having an upper end and a lower end;
- a pointed tip provided at the lower end of said shaft;
- a rigid stop permanently fixed to said shaft at a distance between 6–8 mm from said pointed tip;
- a cutting head located along said shaft adjacent said pointed tip, wherein said cutting head has a spherical cutting surface extending about a first circumferential portion of said cutting head and a flat non-cutting surface extending about a second circumferential portion of said cutting head.
An endodontic instrument comprising:
- an elongated shaft having an upper end and a lower end;
- a pointed tip provided at the lower end of said shaft;
- a rigid stop permanently fixed to said shaft and spaced from said pointed tip;
- a cutting head provided at the lower end of said shaft adjacent said pointed tip, wherein said cutting head has a spherical cutting surface extending about a first circumferential portion of said cutting head and a flat non-cutting surface extending about a second circumferential portion of said cutting head.
Dependencies are inferred from the claim text.