Method and apparatus for photon therapy

• US 6,221,095 B1
• Filed: 07/15/1997
• Issued: 04/24/2001
• Est. Priority Date: 11/13/1996
• Status: Expired due to Term

• Current Assignee: Meditech International
• Original Assignee: Meditech International
• Inventors: Campbell, Iain, Stoute, Christopher L. M., Kahn, Fred, Van Zuylen, Jeffrey
• Primary Examiner(s): Dvorak, Linda C. M.
• Assistant Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US08/892,857
• Time in Patent Office: 1,379 Days
• Field of Search: 607/88-92, 606/13, 606/15, 606/9
• US Class Current: 607/88
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00482 with a code
• CPC Class Codes: A61N 2005/007 for cooling the patient
• CPC Class Codes: A61N 2005/0644 Handheld applicators
• CPC Class Codes: A61N 2005/0645 Applicators worn by the patient
• CPC Class Codes: A61N 2005/0652 Arrays of diodes
• CPC Class Codes: A61N 5/0616 Skin treatment other than tanning
• CPC Class Codes: A61N 5/0619 Acupuncture
• CPC Class Codes: A61N 5/0622 Optical stimulation for exciting neural tissue
• CPC Class Codes: A61N 5/067 using laser light

Abstract

A photon therapy unit implement has a flexible head for conforming to a body part to be treated. The head has a thermally conductive backing to remove heat form the treatment area. The operation of the head is monitored by a photon detector to provide a feedback to the diode drive circuit to maintain the output at the required level. Operation of the head is monitored by a microprocessor which performs a diagnostic function and reports on defects. The treatment protocol is generated by a main control unit that formulates a treatment waveform from a set of treatment protocols. The selection of protocols is performed through a graphical user interface (GUI) which allows selection of treatment areas and customization of treatment as well as maintaining patient history and annotations.

Claims

1. A photon therapy unit having a treatment head including at least one photon emitter, a drive circuit to drive said photon emitting device, a control to modulate said drive circuit and a switch responsive to placement of said head on a treatment location, said switch inhibiting operation of said drive circuit until said emitter is placed on said treatment location and including at least one pair of terminals at spaced locations on said head and positioned relative to said photon emitting device to contact skin at said treatment location to complete an electrical circuit upon placement of said head on said treatment location with said emitter directed to said treatment location.

2. A photon therapy unit according to claim 1 wherein a photon emitting device is located between each of said pair of terminals.

3. A photon therapy unit according to claim 1 wherein said control is operable to override said drive circuit and to disable said emitters.

4. A photon therapy unit having a treatment head including at least one photon emitter;

a drive circuit to drive said photon emitting device, a control to modulate said drive circuit and a switch responsive to placement of said head on a treatment location with said emitter directed to said treatment location, said switch inhibiting operation of said drive circuit until said emitter is placed on said treatment location and including an optical sensor responsive to ambient light to determine placement on said treatment location.

5. A photon therapy unit accordingly to claim 4 wherein said diagnostic function includes a microprocessor and an error signal is generated by said microprocessor.

6. A treatment head according to claim 5 wherein a backing is provided for said support, said backing being flexible and thermally conductive to secure said emitters on said support and thereby conduct heat from said emitters and away from said treatment area.

7. A treatment head according to claim 6 wherein said support is encapsulated by said thermally conductive backing.

8. A treatment head according to claim 5 wherein said backing has fins formed thereon to dissipate heat from said backing.

9. A treatment head according to claim 5 wherein a control circuit is located at one end of said head adjacent said array.

10. A treatment head according to claim 9 wherein a retaining bank is secured to said head at opposite ends of said array.

11. A treatment head according to claim 10 wherein one end of said retaining band is secured to said head adjacent to said array at said one end to inhibit flexure of said control circuit upon tightening of said retaining band.

12. A treatment head according to claim 9 wherein a control panel is provided at said one end on an opposite side thereof to said array.

13. A treatment head according to claim 12 wherein said support is flexible and said backing is molded from a thermally conductive material.

14. A photon therapy unit comprising a treatment head having at least one photon emitting device therein, and a drive circuit to drive said photon emitting device, a control unit to provide control signals to said drive circuit to implement one of a plurality of treatment protocols accessible to said unit and a graphical user interface to display a selection of said plurality of protocols to permit a user to select one of said treatment protocols from a plurality thereof, said protocols being presented on said graphical user interface as a representation of area to be treated.

15. A photon therapy unit according to claim 14 wherein said head includes an identification to advise said control unit of the characteristics of said head upon connection thereto.

16. A photon therapy unit according to claim 15 wherein said head includes a microprocessor to monitor operation of said head and communicate such operation to said control unit.

17. A photon therapy unit according to claim 14 wherein said graphical user interface includes a display of patient history.

18. A photon therapy unit according to claim 17 wherein said patient history is updated periodically from a memory associated with said head.

19. A photon therapy unit according to claim 14 wherein said graphical user interface includes a display of patient characteristics and selection of such characteristics adjusts a treatment protocol for a patient.

20. A treatment head for a photon therapy unit, said head having a plurality of discrete arrays of photon emitters, each having a support for said emitters to maintain said emitters in spaced relationship on a respective array, said arrays being arranged in seriatim and flexibly connected to one another to facilitate said head conforming to a treatment location.

21. A treatment head according to claim 20 wherein said arrays are connected by flexible tube extending between adjacent arrays, said tube containing electrical connections for each of said arrays.

22. A treatment head according to claim 21 wherein said tube forms a loop at an end opposite said one end for attachment of a retaining band.

23. A treatment head according to claim 20 wherein fins are formed on said head to dissipate heat from said emitters.

24. A treatment head according to claim 20 wherein a heat sink is positioned adjacent said support and said emitters are thermally connected to said heat sink by a moldable thermally conductive electrical insulator.

25. A treatment head according to claim 20 wherein said emitters are located in a thermally insulating plastics material arranged to be juxtaposed on a treatment location.