Ultrasonic endodontic surgical instrument
AssigneeHan Instruments, LLC
InventorDavid C. Han
Life of this patent
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Abstract
An ultrasonic root end retro-preparation endodontic apical surgical instrument. The instrument has a double-angled shape with a length of between about 1-2 in (2.5-5.1 mm), and is made of a metal which safely and effectively propagates ultrasonic energy from a base segment to a bent distal tip with a length of between about 0.08-0.15 in (0.20-0.38 mm). The instrument includes a swivel segment that permits rotation of the bent distal tip of up to 360°. By allowing the bent distal tip to be swiveled, the instrument may be used for all quadrants, anterior and posterior teeth without switching out the instrument for another one.
Claims20
An endodontic instrument for ultrasonic root end retro-preparation, comprising:
- a plurality of segments extending from a proximal base to a bent distal tip, the proximal base having an opening at a proximal end thereof adapted to receive an actuator of ultrasonic energy generator, the segments being attached together to enable propagation of ultrasonic energy from the proximal base to the distal tip, the segments including a first elbow segment attached to the proximal base and a swivel segment located distal to the first elbow segment, the swivel segment enabling rotation of the bent distal tip relative to the first elbow segment, wherein the segments are made of the same metal, and wherein the plurality of segments define a double-angled shape having a length of between about 1-2 in.
An endodontic instrument for ultrasonic root end retro-preparation, comprising:
- a plurality of segments extending from a proximal base to a distal tip, the segments being connected together in series and including from proximal to distal:
- i. a straight coupling member forming a part of the proximal base and defining a base axis, the coupling member having an opening at a proximal end thereof adapted to receive an actuator of ultrasonic energy generator,
- ii. a straight proximal shaft portion forming a part of the proximal base and having a diameter less than a diameter of the coupling member, the proximal shaft portion being aligned along the base axis,
- iii. the first elbow segment defining a primary bend of the instrument having an angle of between 15-60°,
- iv. a straight swivel segment,
- v. a straight distal shaft segment aligned with the swivel segment and defining a distal axis,
- vi. a second elbow segment defining a secondary bend of the instrument having an angle of between 75-115°,
- vii. the distal tip including a straight segment defining a tip axis and a pointed distal end,
- the segments being attached together to enable propagation of ultrasonic energy from the proximal base to the distal tip, and wherein the swivel segment enables 360° rotation of the distal tip about the distal axis.
Dependencies are inferred from the claim text.