Curing light device

• US 9,730,778 B2
• Filed: 06/29/2015
• Issued: 08/15/2017
• Est. Priority Date: 04/02/2009
• Status: Expired due to Fees

• Current Assignee: Kerr Corporation (Envista Holdings Corporation)
• Original Assignee: Kerr Corporation (Envista Holdings Corporation)
• Inventors: Gill, Owen
• Primary Examiner(s): Bowman, Mary Ellen
• Application Number:
  US14/754,123
• Publication Number:
  US 20150297328A1
• Time in Patent Office: 778 Days
• CPC Class Codes: A61C 19/004 Hand-held apparatus, e.g. guns
• CPC Class Codes: F21L 4/02 characterised by the provision of two or more light sources
• CPC Class Codes: F21L 4/08 characterised by means for in situ recharging of the batteries or cells
• CPC Class Codes: F21V 19/02 with provision for adjustment, e.g. for focusing
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 33/0068 Medical equipment
• CPC Class Codes: F21V 5/048 the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
• CPC Class Codes: F21W 2131/202 for dentistry
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A curing light device for curing a compound includes a housing and a tip structure configured to be removably coupled with the housing. A light emitting device operable for emitting light in a wavelength range suitable for curing a light curable compound is positioned at the distal end of the tip structure. Electrical components are positioned at the proximal end of the tip structure and coupled with the at least one light emitting device and are configured for engaging complementary electrical components positioned in the housing for providing power to the light emitting device. A portion of the tip structure extends beyond the proximal end of the tip structure and is configured to be received by a feature in the housing for physically aligning the tip structure in the housing and for aligning the electrical components. A power supply circuit is rechargeable and includes an ultracapacitor element.

Claims

1. A curing light device for curing a compound, the curing light device comprising:

a housing;

a tip structure configured to be removably coupled with the housing, the tip structure having a proximal end and a distal end;

at least one light emitting device operable for emitting light in a wavelength range suitable for curing a light curable compound, the at least one light emitting device positioned at the distal end of the tip structure;

electrical components positioned at the proximal end of the tip structure and coupled with the at least one light emitting device, the electrical components configured for engaging complementary electrical components positioned in the housing for providing power to the at least one light emitting device;

a portion of the tip structure extending beyond the proximal end of the tip structure, the tip structure portion configured to be received by a feature in the housing for physically aligning the tip structure in the housing and for aligning the complementary electrical components in the tip structure and housing to transfer power from the housing to the tip structure;

a power supply circuit positioned in the housing and operably coupled with the electrical components positioned in the housing, the power supply circuit being rechargeable and including at least one ultracapacitor element for being charged.

2. The curing light device of claim 1 wherein the portion of the tip structure extending beyond the proximal end of the tip structure is centrally located in the tip structure for physically aligning the tip structure in the housing.

3. The curing light device of claim 2 wherein the electrical components are positioned around the centrally located portion of the tip structure for being aligned with complementary electrical components of the housing when the tip structure is removably coupled with the housing.

4. The curing light device of claim 1 wherein the portion of the tip structure extending beyond the proximal end of the tip structure includes at least a portion of a heat sink thermally coupled with the at least one light emitting device.

5. The curing light device of claim 4 wherein the feature for receiving the tip structure portion includes a channel formed in the housing, the channel including a heat sink to thermally couple with the heat sink portion of the tip structure.

6. The curing light device of claim 1 wherein the power supply circuit includes a current source circuit coupled between the ultracapacitor element and the electrical components that is configured to discharge the at least one ultracapacitor element as a current source for driving the at least one light emitting device, the current source circuit including at least one of a buck converter circuit, a boost converter circuit, a buck-boost converter circuit, a flyback circuit and a single ended primary inductor converter (SEPIC) circuit.

7. The curing light device of claim 1 wherein the tip structure is formed of an autoclavable material capable of withstanding autoclaving.

8. The curing light device of claim 1 wherein the tip structure includes a heat sink extending from the at least one light emitting device at the proximal end to at least the distal end and insulative material covering the heat sink between the proximal end and the distal end.

9. The curing light device of claim 1 wherein the tip structure includes at least one of a transparent element or a lens for sealing the tip structure distal end proximate the at least one light emitting element.

10. The curing light device of claim 1 wherein the electrical components of at least one of the tip structure and housing are circular and can engage complementary electrical components over a range of 0°

to 360°

, so the tip structure may be rotated with respect to the housing.

11. The curing light device of claim 1 wherein at least one of the electrical components of the tip structure or housing includes spring contacts to ensure engagement between the complementary electrical components.

12. A curing light device for curing a compound comprising:

at least one light emitting device operable for emitting light in a wavelength range suitable for curing a light curable compound, the at least one light emitting device positioned at a distal end of the curing light device;

a heat sink system thermally coupled with the at least one light emitting device for removing heat therefrom, the heat sink system including a solid element thermally coupled with a phase change element, the solid element cooperating with the phase change element to remove heat from the at least one light emitting device.

13. The curing light device of claim 12 wherein the solid element is thermally coupled with the at least one light emitting device.

14. The curing light device of claim 12 wherein the phase change element includes a reservoir portion containing an amount of phase change material capable of absorbing heat.

15. The curing light device of claim 14 further comprising a channel coupled with the reservoir portion, the channel configured for engaging with the solid element for transferring heat from the solid element to the reservoir portion.

16. The curing light device of claim 14 wherein the phase change material includes at least one of paraffin wax or paraffin wax with carbon.

17. The curing light device of claim 12 further comprising a housing and a tip structure configured to be removably coupled with the housing, the at least one light emitting device positioned at the distal end of the tip structure, the solid element of the heat sink system being located in the tip structure.

18. The curing light device of claim 17, the phase change element being located in the housing, the solid element thermally coupling with the phase change element when the tip structure is coupled with the housing.

19. The curing light device of claim 18 further comprising a channel in the housing thermally coupled with the phase change element, the channel configured for receiving a portion of the tip structure when the tip structure is coupled with the housing.

20. The curing light device of claim 19 wherein the phase change element includes a reservoir portion containing an amount of phase change material capable of absorbing heat, the channel thermally coupled with the reservoir.