Vibratory Dental Tool

• US 20080318184A1
• Filed: 06/13/2008
• Published: 12/25/2008
• Est. Priority Date: 06/13/2007
• Status: Abandoned Application

• Current Assignee: Discus Dental LLC (Koninklijke Philips N.V.)
• Original Assignee: Discus Dental LLC (Koninklijke Philips N.V.)
• Inventors: Quan, Christopher, Zargari, Brian, Fani, Pejman
• Application Number:
  US12/139,380
• Publication Number:
  US 20080318184A1
• Time in Patent Office: Days
• US Class Current: 433/119
• CPC Class Codes: A61C 1/07 with vibratory drive, e.g. ultrasonic
• CPC Class Codes: A61C 17/34 driven by electric motor
• CPC Class Codes: A61C 3/03 Instruments operated by vibration
• CPC Class Codes: H02K 49/108 with an axial air gap
• CPC Class Codes: H02K 7/06 Means for converting reciprocating motion into rotary motion or vice versa

Abstract

A powered dental tool generally includes a tool tip at its distal end, a body at its proximal end and a motion generating mechanism. In one aspect, the dental tool includes a tool tip having a proximal end and a distal end along a generally longitudinal axis and a reciprocating motion generating mechanism. The reciprocating motion generating mechanism may repeatedly move the tool tip generally back and forth by a given displacement generally along the tool tip'"'"'s longitudinal axis. This displacement generally resembles the action of a hand scaler, i.e., a reciprocating motion along the longitudinal axis of the scaler, which is unlike the vibration of most powered scalers. Such action may be advantageous as it may be more intuitive for the dental professional or hygienist and may provide more effective scaling action. It may further be advantageous for a powered scaler to more closely resemble a hand scaler in form, which is small, portable and untethered. In one embodiment, the motion generating mechanism may include a rotational source and set of opposing magnetic transfer elements.

Claims

1. A dental tool comprising:

a substantially hollow body portion;

at least one tool tip disposed on said body portion, said tool tip having a longitudinal axis, a proximal end and a distal end;

a first magnetic transfer element coupled to the proximal end of said tool tip; and

at least one motion generating mechanism comprising a second magnetic transfer element disposed in proximity to said first magnetic transfer element, and a rotational source for rotating the second magnetic transfer element;

wherein said first and second magnetic transfer elements interact to generate a vibratory reciprocating motion of the tool tip substantially along the longitudinal axis.

2. The dental tool of claim 1, wherein the body further comprises at least one partition in proximity to the tip.

3. The dental tool of claim 1, wherein said dental tool forms part of a set of dental tool comprising a body portion having varying diameters for grasping.

4. The dental tool of claim 1, wherein said rotational source rotates said second magnetic transfer element in a continuous mode.

5. The dental tool of claim 1, wherein said rotational source rotates said second magnetic transfer element in a discrete rocking, oscillating or flipping action.

6. The dental tool of claim 2, wherein said partition physically separates the first and second magnetic transfer elements.

7. The dental tool of claim 1 further comprising an actuator on the body for activating the rotational source.

8. The dental tool of claim 1 further comprising at least one power source positioned inside the body.

9. The dental tool of claim 1 further comprising a spring element for biasing the tool tip against motion along its longitudinal axis.

10. The dental tool of claim 1 wherein at least one of said magnetic elements comprises multiple magnetic pole domains.

11. The dental tool of claim 1 wherein said rotational source comprises at least one motor, one transducer, one turbine or combinations thereof for rotating said second magnetic element.

12. The dental tool of claim 1 wherein at least a portion of said first and second magnetic elements are in contact with each other.

13. The dental tool of claim 5 wherein said motion generating mechanism comprises at least two separate motors that are on at different times.

14. A dental tool comprising:

a substantially hollow body;

at least one tool tip disposed on said body, said tool tip having a longitudinal axis, a proximal end and a distal end;

at least one magnetic transfer element coupled to the proximal end of said tool tip; and

at least one motion generating mechanism comprising at least one coil in close proximity to said at least one magnetic transfer element, and an alternating current source for powering the coil to generate a vibratory reciprocating motion of the tool tip substantially along the longitudinal axis.

15. The dental tool of claim 14 further comprising a ferromagnetic core disposed within the coil.

16. The dental tool of claim 14 wherein said at least one coil comprises a flat coil.

17. The dental tool of claim 14, wherein the body further comprises at least one partition in proximity to the tip.

18. The dental tool of claim 17, wherein said partition physically separates the at least one magnetic transfer element and the at least one coil.

19. The dental tool of claim 14 further comprising an actuator on the body for activating the alternating current source.

20. The dental tool of claim 14 further comprising a spring element for biasing the tool tip against motion along its longitudinal axis.

21. A dental tool comprising:

a substantially hollow body;

at least one tool tip disposed on said body, said tool tip having a longitudinal axis, a proximal end and a distal end;

a first magnetic transfer element comprising at least one surface having at least a pair of North and South magnetic pole domains disposed on said surface, said first magnetic transfer element being coupled to the proximal end of said tool tip; and

at least one motion generating mechanism comprising a second magnetic transfer element in proximity to said first magnetic transfer element, the second magnetic transfer element comprising at least one surface proximal to the at least one surface of the first magnetic transfer element, and having at least a pair of North and South magnetic pole domains disposed on said surface, and a rotational source for rotating the second magnetic transfer element.

22. The dental tool of claim 21 wherein said rotational source rotates the second magnetic transfer element to alternate alignment and misalignment of the pairs of North and South magnetic pole domains of the first and second magnetic transfer elements to generate a vibratory reciprocating motion of the tool tip substantially along the longitudinal axis.

23. The dental tool of claim 21 wherein said rotational source rotates the second magnetic transfer element to alternate alignment and misalignment of the pairs of North and South magnetic pole domains of the first and second magnetic transfer elements in a discrete mode to generate a vibratory reciprocating motion of the tool tip substantially along the longitudinal axis.

24. The dental tool of claim 21 wherein said rotational source rotates the second magnetic transfer element to alternate alignment and misalignment of the pairs of North and South magnetic pole domains of the first and second magnetic transfer elements in a continuous mode to generate a vibratory reciprocating motion of the tool tip substantially along the longitudinal axis.

25. The dental tool of claim 21, wherein the body further comprises at least one partition in proximity to the tip.

26. The dental tool of claim 25, wherein said partition physically separates the first and second magnetic transfer elements.

27. The dental tool of claim 24 further comprising a spring element for biasing the tool tip against motion along its longitudinal axis.