Laser handpiece architecture and methods

• US 20070016176A1
• Filed: 08/12/2005
• Published: 01/18/2007
• Est. Priority Date: 08/13/2004
• Status: Abandoned Application

• Current Assignee: Biolase Incorporated
• Original Assignee: Biolase Incorporated
• Inventors: Boutoussov, Dmitri, Jones, Jeffrey
• Application Number:
  US11/203,677
• Publication Number:
  US 20070016176A1
• Time in Patent Office: Days
• US Class Current: 606/17
• CPC Class Codes: A61B 18/22 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2018/00017 with gas
• CPC Class Codes: A61B 2018/202 Laser enclosed in a hand-piece
• CPC Class Codes: A61B 2018/2025 with a pilot laser
• CPC Class Codes: A61B 2090/306 using optical fibres
• CPC Class Codes: A61C 1/0046 Dental lasers surgical lasers A61B18/20; working by laser beam in general B23K26/00; lasers per se H01S3/00
• CPC Class Codes: A61F 2009/00844 Feedback systems
• CPC Class Codes: A61F 9/0079 using non-laser electromagnetic radiation, e.g. non-coherent light or microwaves
• CPC Class Codes: A61F 9/008 using laser

Abstract

A laser handpiece is described that connects to a laser base unit. The laser handpiece receives laser energy and ancillary inputs from a connector that connects to the laser base unit. A handpiece tip on the laser handpiece directs laser energy to a target surface.

Claims

1. An electromagnetic energy handpiece that connects to an electromagnetic energy base unit, the handpiece comprising:

an elongate portion coupled to receive concentrated electromagnetic energy and additional electromagnetic energy from a connector that is connectable to the electromagnetic energy base unit;

a handpiece tip formed as an extension of the elongate portion, the handpiece tip being capable of directing electromagnetic energy to a target surface;

a first mirror disposed in a general vicinity between opposing ends of the handpiece and the elongate portion and being capable of directing the additional electromagnetic energy through at least part of the handpiece tip and to the target surface; and

a second mirror eclipsing at least a part of the first mirror, relative to a direction of propagation of additional electromagnetic energy to the first mirror, and being capable of directing the concentrated electromagnetic energy through at least part of the handpiece tip and to the target surface.

2. The electromagnetic energy handpiece as set forth in claim 1, wherein:

the first mirror is capable of receiving additional electromagnetic energy from one or more conduits and directing the additional electromagnetic energy to one or more tip waveguides of the handpiece tip, the tip waveguides directing the additional electromagnetic energy toward the target surface; and

the second mirror is capable of receiving concentrated electromagnetic energy from an electromagnetic energy conduit and directing concentrated the electromagnetic energy to a fiber tip of the handpiece tip, the fiber tip directing the concentrated electromagnetic energy toward the target surface.

3. The electromagnetic energy handpiece as set forth in claim 1, wherein:

the elongate portion is coupled to receive spray water from the connector; and

the elongate portion comprises a spray water line coupled to receive the spray water and to route the spray water through at least part of the elongate portion to the handpiece tip.

4. The electromagnetic energy handpiece as set forth in claim 1, wherein the additional electromagnetic energy comprises illumination light and excitation light that are both routed through at least part of the elongate portion to the handpiece tip.

5. The electromagnetic energy handpiece as set forth in claim 4, wherein the illumination light and the excitation light are routed through at least part of the elongate portion by way of an illumination fiber and an excitation fiber.

6. The electromagnetic energy handpiece as set forth in claim 4, wherein the elongate handpiece further receives spray water from the connector.

7. The electromagnetic energy handpiece as set forth in claim 6, wherein the elongate handpiece further receives air from the connector.

8. The electromagnetic energy handpiece as set forth in claim 7, wherein the air is supplied to the elongate handpiece by way of a spray air line and a cooling air line.

9. The electromagnetic energy handpiece as set forth in claim 1, wherein the elongate portion comprises:

an electromagnetic energy fiber capable of receiving concentrated electromagnetic energy from the connector;

an illumination fiber capable of receiving a portion of the additional electromagnetic energy as illumination light;

an excitation fiber capable of receiving another portion of the additional electromagnetic energy as excitation light; and

a feedback fiber capable of receiving feedback light from the handpiece tip.

10. The electromagnetic energy handpiece as set forth in claim 9, the first mirror being disposed within the handpiece tip and being capable of directing the additional light as illumination light into a plurality of tip waveguides, the second mirror being disposed within the handpiece tip and being capable of directing the concentrated electromagnetic energy into a fiber tip, and the tip waveguides being capable of receiving illumination and excitation light from the first mirror and directing the illumination light to the target surface and receiving reflected light from the target surface and directing the reflected light to the first mirror.

11. The electromagnetic energy handpiece as set forth in claim 10, further comprising at least one feedback fiber disposed within the handpiece tip and within the elongate portion, wherein the feedback fiber is capable of receiving reflected light from the first mirror and directing the feedback light to the connector.

12. The electromagnetic energy handpiece as set forth in claim 11, wherein the electromagnetic energy base unit comprises a photo detector capable of receiving the feedback light from the connector and providing a feedback display according to one of an error condition and a potential error condition in optical components of the electromagnetic energy handpiece.

13. The electromagnetic energy handpiece as set forth in claim 1, further comprising:

first tubing disposed within the elongate portion and the handpiece tip, the first tubing being capable of receiving air from the connector; and

second tubing disposed within the elongate portion and the handpiece tip, the second tubing being capable of receiving water from the connector.

14. The electromagnetic energy handpiece as set forth in claim 13, further comprising one or more mixing chambers, each mixing chamber having two inputs and a fluid output, the two inputs comprising:

a first input capable of receiving air from first tubing; and

a second input capable of receiving water from second tubing, wherein the air and water are mixed within the mixing chamber, and a mixture of air and water is expelled from the fluid output.

15. The electromagnetic energy handpiece as set forth in claim 13, the one or more mixing chambers comprising three mixing chambers.

16. An electromagnetic energy device comprising:

an electromagnetic energy base unit;

a connector that connects to the electromagnetic energy base unit;

a conduit that connects to the connector; and

an electromagnetic energy handpiece that connects to the conduit, wherein the electromagnetic energy handpiece is capable of receiving electromagnetic energy, one or more of illumination light and excitation light having a propagation path that envelops at least a part of a propagation path of the electromagnetic energy within the electromagnetic energy handpiece, and fluid from the electromagnetic energy base unit.

17. The electromagnetic energy device as set forth in claim 16, wherein the fluid comprises spray water, spray air, and cooling air.

18. The electromagnetic energy device as set forth in claim 16, wherein the electromagnetic energy handpiece comprises a handpiece tip, the handpiece tip comprising:

a plurality of mirrors;

a fiber tip; and

a plurality of tip waveguides, capable of receiving one or more of electromagnetic energy, illumination light, and excitation light, and directing the one or more of electromagnetic energy, illumination light, and excitation light to a target surface.

19. The electromagnetic energy device as set forth in claim 18, wherein the handpiece tip comprises a housing having disposed therein the plurality of tip waveguides, the fiber tip, and a plurality of fluid outputs.

20. The electromagnetic energy device as set forth in claim 19, wherein the plurality of tip waveguides and the plurality of fluid outputs are circularly disposed around the fiber tip.

21. The electromagnetic energy device as set forth in claim 20, wherein:

the plurality of tip waveguides comprises nine tip waveguides separated by about forty degrees; and

the plurality of fluid outputs comprises three fluid outputs separated by about one hundred twenty degrees.

22. The electromagnetic energy device as set forth in claim 21, wherein:

the nine tip waveguides are disposed with respect to a reference at zero, forty, eighty, one hundred twenty, one hundred sixty, two hundred, two hundred forty, two hundred eighty, and three hundred twenty degrees; and

the three fluid outputs are disposed with respect to the reference at one hundred, two hundred twenty, and three hundred forty degrees.

23. The electromagnetic energy device as set forth in claim 18, wherein the handpiece tip comprises a housing having disposed therein transparent material capable of transmitting light.

24. The electromagnetic energy device as set forth in claim 23, wherein the transparent material comprises one of transparent plastic, sapphire, and quartz.

25. A method of analyzing feedback light from a medical electromagnetic energy handpiece, thereby monitoring integrity of optical components, the method comprising:

receiving feedback light into the medical electromagnetic energy handpiece;

generating an electrical signal according to the feedback light; and

providing an error indication when the electrical signal exceeds a predetermined threshold.

26. The method as set forth in claim 25, wherein the providing of an error indication comprises generating a display on a monitor of an electromagnetic energy base unit.

27. A laser handpiece having a proximal end and a distal end, the laser handpiece comprising:

a power fiber extending from the proximal end to the distal end;

a plurality of first optical fibers concentrically arranged around the power fiber and extending from the proximal end to the distal end, the plurality of first optical fibers being capable of receiving a first type of electromagnetic energy from the proximal end and of outputting the first type of electromagnetic energy at the distal end; and

a plurality of second optical fibers concentrically arranged around the power fiber and extending from the proximal end to the distal end, the plurality of second optical fibers being capable of receiving a second type of electromagnetic energy from the distal end and of directing the second type of electromagnetic energy to the proximal end.

28. The laser handpiece as set forth in claim 27, further comprising:

a plurality of third optical fibers extending from the proximal end to the distal end, the plurality of third optical fibers being capable of receiving a third type of electromagnetic energy from the distal end and of directing the third type of electromagnetic energy to the proximal end; and

a camera coupled to receive the third type of electromagnetic energy from at least part of the plurality of third optical fibers.

29. The laser handpiece as set forth in claim 28, wherein the second type of electromagnetic energy is substantially the same as the third type of electromagnetic energy.

30. The laser handpiece as set forth in claim 27, further comprising an electromagnetic energy sensor coupled to receive electromagnetic energy from at least part of the plurality of second optical fibers.

31. The laser handpiece as set forth in claim 30, wherein the electromagnetic energy sensor includes a camera coupled to receive electromagnetic energy from at least part of the plurality of second optical fibers.

32. The laser handpiece as set forth in claim 30, wherein:

the electromagnetic energy sensor is coupled to receive the second type of electromagnetic energy from at least part of the plurality of second optical fibers; and

the laser handpiece further comprises a camera that is coupled to receive the second type of electromagnetic energy from at least part of the plurality of second optical fibers.

33. The laser handpiece as set forth in claim 27, wherein the plurality of first optical fibers is capable of receiving electromagnetic energy comprising one or more of visible light, infrared light, blue light, and laser light.

34. The laser handpiece as set forth in claim 27, further comprising an electromagnetic energy sensor coupled to receive electromagnetic energy from the plurality of second optical fibers.

35. The laser handpiece as set forth in claim 34, wherein the electromagnetic energy sensor is coupled to receive the second type of electromagnetic energy from at least part of the plurality of second optical fibers.

36. The laser handpiece as set forth in claim 34, wherein the laser handpiece includes at least one light altering element capable of influencing a transmission of electromagnetic energy by the plurality of first optical fibers.

37. The laser handpiece as set forth in claim 36, wherein the at least one light altering element comprises at least one optical filter.

38. The laser handpiece as set forth in claim 37, wherein the at least one optical filter is structured to convert blue light into white light.

39. The laser handpiece as set forth in claim 27, further comprising a beam splitter coupled to one or more of (a) at least part of the plurality of first optical fibers and (b) at least part of the plurality of second optical fibers.

40. The laser handpiece as set forth in claim 39, further comprising an electromagnetic energy sensor coupled to receive electromagnetic energy from at least part of the plurality of second optical fibers.

41. The laser handpiece as set forth in claim 39, further comprising a camera coupled to receive electromagnetic energy from at least part of the plurality of second optical fibers.

42. The laser handpiece as set forth in claim 41, further comprising an electromagnetic energy sensor coupled to receive electromagnetic energy from at least part of the plurality of second optical fibers.

43. The laser handpiece as set forth in claim 42, wherein:

the electromagnetic energy sensor is coupled to receive the second type of electromagnetic energy from at least part of the plurality of second optical fibers; and

the camera is coupled to receive the second type of electromagnetic energy from at least part of the plurality of second optical fibers.

44. The laser handpiece as set forth in claim 39, further comprising:

a plurality of third optical fibers extending from the proximal end to the distal end, the plurality of third optical fibers being capable of receiving a third type of electromagnetic energy from the distal end and of directing the third type of electromagnetic energy to the proximal end; and

a camera coupled to receive the third type of electromagnetic energy from at least part of the plurality of third optical fibers.

45. An apparatus, comprising:

a laser handpiece having a proximal end and a distal end, the laser handpiece being capable of transmitting concentrated infrared electromagnetic energy and relatively less-concentrated visible electromagnetic energy from the proximal end to the distal end, whereby the less-concentrated visible electromagnetic energy is concentrically disposed around the concentrated infrared electromagnetic energy; and

a handpiece tip disposed at the distal end of the laser handpiece, the handpiece tip being capable of receiving the concentrated infrared and less-concentrated visible electromagnetic energies from the distal end of the laser handpiece and of directing the electromagnetic energy to a target.

46. The apparatus as set forth in claim 45, wherein the handpiece tip comprises:

a treatment end connected to and disposed at an angle relative to a longitudinal axis of the laser handpiece;

a tip ferrule insertable into the treatment end, the tip ferrule comprising a distal end; and

a fiber tip insertable into the tip ferrule, the fiber tip being capable of receiving electromagnetic energy from the distal end of the laser handpiece.

47. The apparatus as set forth in claim 45, wherein the laser handpiece comprises:

a first plurality of optical fibers capable of receiving the concentrated infrared and less-concentrated visible electromagnetic energies at the proximal end and of directing the received electromagnetic energies to the handpiece tip; and

a second plurality of optical fibers capable of receiving less-concentrated visible electromagnetic energy, which is reflected from a target back into the apparatus, from the handpiece tip and of directing the received less-concentrated visible electromagnetic energy to the proximal end of the laser handpiece.

48. The apparatus as set forth in claim 45, wherein during operation the handpiece tip is capable of rotating about an axis of the laser handpiece.

49. The apparatus as set forth in claim 48, wherein the handpiece tip comprises a plurality of reflectors capable of directing electromagnetic energy from the distal end of the laser handpiece to a target independent of an angle of rotation of the handpiece tip.

50. A laser handpiece, comprising:

an elongate body having a distal end and a proximal end;

a power light transmitter;

a first plurality of light transmitters disposed within the elongate body around the power transmitter, the first plurality of light transmitters being configured to transmit electromagnetic energy from the proximal end to the distal end;

a second plurality of light transmitters disposed within the elongate body around the power transmitter, the second plurality of light transmitters being configured to transmit electromagnetic energy from the distal end to the proximal end; and

a light sensor coupled to receive light from the second plurality of light transmitters at the proximal end.

51. The laser handpiece as set forth in claim 50, wherein the second plurality of light transmitters is further configured to transmit light from the distal end to the proximal end.

52. The laser handpiece as set forth in claim 51, further comprising a beam splitter coupled to at least part of the second plurality of light transmitters.

53. The laser handpiece as set forth in claim 50, further comprising a microprocessor coupled to the light sensor to interpret the light received from the second plurality of light transmitters at the proximal end.

54. The laser handpiece as set forth in claim 50, wherein the first plurality of light transmitters is capable of transmitting light comprising at least one of visible light, infrared light, blue light, and laser light.

55. The laser handpiece as set forth in claim 54, wherein the elongate body comprises:

a rigid portion; and

at least one substantially flexible portion.

56. The laser handpiece as set forth in claim 55, wherein at least one substantially flexible portion comprises a jointed section.

57. The laser handpiece as set forth in claim 56, wherein the jointed section assumes in a neutral position an angle of about 15 to 20 degrees with respect to an axis of the rigid portion of the elongate body.

58. The laser handpiece as set forth in claim 50, wherein:

the first plurality of light transmitters comprises a first plurality of optical fibers; and

the second plurality of light transmitters comprises a second plurality of optical fibers.

59. The laser handpiece as set forth in claim 58, wherein the first plurality of light transmitters comprises at least one light altering element capable of influencing light transmitted to the distal end.

60. The laser handpiece as set forth in claim 59, wherein the at least one light altering element comprises at least one optical filter.

61. The laser handpiece as set forth in claim 50, further comprising:

a third plurality of light transmitters extending from the proximal end to the distal end, the third plurality of light transmitters being configured to receive light from the distal end and to direct the light to the proximal end; and

a camera coupled to receive light from at least part of the third plurality of light transmitters.

62. The laser handpiece as set forth in claim 61, wherein light transmitted from the distal end to the proximal end by the second plurality of light transmitters is substantially the same as light received by, and directed to the proximal end by, the third plurality of light transmitters.

63. The laser handpiece as set forth in claim 50, wherein the light sensor includes a camera coupled to receive light from at least part of the second plurality of light transmitters.

64. The laser handpiece as set forth in claim 50, wherein the laser handpiece further comprises a camera that is coupled to receive light from the second plurality of light transmitters.

65. The laser handpiece as set forth in claim 50, further comprising a beam splitter coupled to one or more of (a) at least part of the first plurality of light transmitters and (b) at least part of the second plurality of light transmitters.

66. The laser handpiece as set forth in claim 65, wherein the light sensor is coupled to receive light from part of the second plurality of light transmitters.

67. The laser handpiece as set forth in claim 65, further comprising a camera coupled to receive light from at least part of the second plurality of light transmitters.

68. The laser handpiece as set forth in claim 65, further comprising:

a third plurality of light transmitters extending from the proximal end to the distal end, the third plurality of light transmitters being capable of receiving light from the distal end and of directing the light to the proximal end; and

a camera coupled to receive light from at least part of the third plurality of light transmitters.