Method, system and device for delivering phototherapy to a patient

• US 7,210,817 B2
• Filed: 04/27/2004
• Issued: 05/01/2007
• Est. Priority Date: 04/27/2004
• Status: Active Grant

• Current Assignee: Bench Walk Lighting, LLC
• Original Assignee: Avago Technologies ECBU IP Singapore Pte Limited (Broadcom, Inc.)
• Inventors: Ng, Kee Yean, Lee, Kian Shin, Chua, Janet Bee Yin, Kuan, Yew Cheong, Cheng, Heng Yow, Ou, Wen Ya
• Primary Examiner(s): Luebke, Renee
• Assistant Examiner(s): Zettl, Mary
• Application Number:
  US10/833,905
• Publication Number:
  US 20050237739A1
• Time in Patent Office: 1,099 Days
• Field of Search: 362/145, 362/249, 362/240, 362/800, 361/719
• US Class Current: 362/249.04
• CPC Class Codes: A61N 2005/005 for cooling the radiator
• CPC Class Codes: A61N 2005/0645 Applicators worn by the patient
• CPC Class Codes: A61N 2005/0652 Arrays of diodes
• CPC Class Codes: A61N 5/0613 Apparatus adapted for a specific treatment
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H05K 1/0203 Cooling of mounted components H05K1/0272 takes precedence
• CPC Class Codes: H05K 1/182 associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]

Abstract

A system and method for a reverse mounted light array. In one method embodiment, the present invention couples a reverse mounted light-generating source with a substrate. Additionally, the present invention couples an electrical portion of the reverse mounted light generating source with a conductive trace coupled to the reverse side of the substrate, wherein the coupling of the conductive trace with the substrate and the reverse mounted light generating source forms a reverse mounted light array.

Claims

1. A flexible mat for delivering photo-therapy to at least a portion of a body of a patient, comprising:

(a) a flexible substrate comprising a lower external-facing surface, an upper patient-facing surface, and a plurality of apertures disposed through the substrate and extending between the external-facing surface and the patient-facing surface;

(b) a plurality of reverse-mount LED packages configured for mounting and positioning on the external-facing surface of the substrate over corresponding apertures such that the LEDs thereof emit light upwardly through or from such apertures substantially in a first direction towards the patient-facing surface of the substrate, each such package further being configured to dissipate heat primarily downwardly in a second direction away from the external-facing surface of the substrate, wherein light-projecting portions of the reverse-mount LED packages extend upwardly through the apertures substantially no further than a plane defined by the patient-facing surface of the substrate, and

(c) a plurality of at least partially flexible electrically conductive traces operatively connected to the reverse-mount LED packages to provide electrical power, and optionally control signals, thereto.

2. The flexible phototherapy mat of claim 1, further comprising heat sinks thermally connected to the reverse-mounted LED packages.

3. The flexible phototherapy mat of claim 2, wherein the heat sinks are operatively attached to the externally-facing surfaces of the packages.

4. The flexible phototherapy mat of claim 1, wherein the mat forms an elongate, planar body.

5. The flexible phototherapy mat of claim 1, wherein the mat is configured to operate as at least one of a washcloth, a face cloth, a sanitary napkin, a tampon, a condom, a belt, a wrap, a cushion, a pillow, a collar, a blanket, a strap and a vest.

6. The flexible phototherapy mat of claim 1, further comprising a backing layer disposed below the external-facing surface of the substrate.

7. The flexible phototherapy mat of claim 6, wherein the backing layer comprises at least one of a light-reflecting material, a thermally conductive material, a thermally insulative material, an electrically insulative material, a thermosetting material, a thermoplastic material, polyimide, polyester, and a polymeric material.

8. The flexible phototherapy mat of claim 1, further comprising a front layer disposed above the patient-facing surface of substrate.

9. The flexible phototherapy mat of claim 8, wherein the front layer comprises at least one of a light-diffusing material, a light-refracting material, a light-reflecting material, a thermally conductive material, a thermally insulative material, an electrically insulative material, a thermosetting material, a thermoplastic material, polyimide, polyester, and a polymeric material.

10. The flexible phototherapy mat of claim 1, wherein the flexible conductive traces are attached to or mounted on the external-facing surface of the substrate.

11. The flexible phototherapy mat of claim 10, wherein the flexible conductive traces are attached to the external-facing surface of the substrate by an adhesive or an intervening layer.

12. The flexible phototherapy mat of claim 1, wherein the partially flexible electrically conductive traces comprise at least one of a flexible circuitry laminate, a copper foil, a rolled-annealed copper coating disposed on the substrate, an electrically conductive polymer, an electrically conductive thick film, and an electrically conductive paste.

13. The flexible phototherapy mat of claim 1, wherein the reverse-mount LED packages are connected to the electrically conductive traces by at least one of flexible wiring, traditional wiring, solder attachment, conductive pieces, pressure connectors, and flexible metal frames.

14. The flexible phototherapy mat of claim 1, further comprising at least one optical device selected from the group consisting of a magnifier, a spreader, a diffuser, a refractor, a lens, a cup, a dome, a reflector, an epoxy cast, and an encapsulant, where the optical device is operatively associated with LEDs of the reverse-mount LED packages so as to direct or spread light emitted therefrom substantially in the first direction, the optical device further being mounted at or below the plane defined by the patient-facing surface of the substrate.

15. The flexible phototherapy mat of claim 1, wherein the plurality of reverse-mount LED packages comprise at least one of blue LEDs, green LEDs, red LEDs, yellow LEDs, white LEDs, and ultraviolet LEDs.

16. The flexible phototherapy mat of claim 1, further comprising cooling channels disposed therein.

17. The flexible phototherapy mat of claim 1, further comprising a controller for at least one of selectively illuminating, controlling the light intensity, mixing colors, changing the illumination pattern, timing out, and shutting off the LEDs of the reverse-mount LED packages.

18. The flexible phototherapy mat of claim 1, further comprising an active cooling system comprising a source of cooling medium and a pump.

19. The flexible phototherapy mat of claim 1, further comprising at least one of an overwrap, a disposable overwrap, a translucent overwrap, a transparent overwrap, a heat-insulating overwrap, and a light-diffusing overwrap.

20. The flexible phototherapy mat of claim 1, further comprising at last one of a strap, VELCROTM™

, and adhesive tape for securing the mat to the portion of the patient'"'"'s body.

21. A method of making a flexible mat for delivering photo-therapy to at least a portion of a body of a patient, the mat comprising a flexible substrate comprising a lower external-facing surface, an upper patient-facing surface, and a plurality of apertures disposed through the substrate and extending between the external-facing surface and the patient-facing surface, a plurality of reverse-mount LED packages configured for mounting and positioning on the external-facing surface of the substrate over corresponding apertures such that the LEDs thereof emit light upwardly through or from such apertures substantially in a first direction towards the patient-facing surface of the substrate, and wherein light-projecting portions of the reverse-mount LED packages extend upwardly through the apertures substantially no further than a plane defined by the patient-facing surface of the substrate, each such package further being configured to dissipate heat primarily downwardly in a second direction away from the external-facing surface of the substrate, and a plurality of at least partially flexible electrically conductive traces operatively connected to the reverse-mount LED packages to provide electrical power, and optionally control signals, thereto, the method comprising:

(a) providing the substrate;

(b) providing the reverse-mount LED packages;

(c) providing the electrically conductive traces, and

(d) operatively connecting the substrate, reverse-mount LED packages and the electrically conductive traces to one another.

22. The method of claim 21, further comprising attaching heat sinks thermally to the reverse-mounted LED packages.

23. The method of claim 21, wherein the mat is configured to operate as at least one of a washcloth, a face cloth, a sanitary napkin, a tampon, a condom, a belt, a wrap, a cushion, a pillow, a collar, a blanket, a strap and a vest.

24. The method of claim 21, further comprising providing a backing layer and disposing same below the external-facing surface of the substrate.

25. The method of claim 21, wherein the backing layer comprises at least one of a light-reflecting material, a thermally conductive material, a thermally insulative material, an electrically insulative material, a thermosetting material, a thermoplastic material, polyimide, polyester, and a polymeric material.

26. The method of claim 21, further comprising providing a front layer and disposing same above the patient-facing surface of substrate.

27. The method of claim 21, wherein the front layer comprises at least one of a light-diffusing material, a light-refracting material, a light-reflecting material, a thermally conductive material, a thermally insulative material, an electrically insulative material, a thermosetting material, a thermoplastic material, polyimide, polyester, and a polymeric material.

28. The method of claim 21, further comprising attaching or mounting the flexible conductive traces to or on the external-facing surface of the substrate.

29. The method of claim 28, wherein the flexible conductive traces are attached to the external-facing surface of the substrate by an adhesive or an intervening layer.

30. The method of claim 21, wherein the partially flexible electrically conductive traces comprise at least one of a flexible circuitry laminate, a copper foil, a rolled-annealed copper coating disposed on the substrate, an electrically conductive polymer, an electrically conductive thick film, and an electrically conductive paste.

31. The flexible phototherapy mat of claim 21, further comprising at least one optical device selected from the group consisting of a magnifier, a spreader, a diffuser, a refractor, a lens, a cup, a dome, a reflector, an epoxy cast, and an encapsulant, where the optical device is operatively associated with LEDs of the reverse-mount LED packages so as to direct or spread light emitted therefrom substantially in the first direction, the optical device further being mounted at or below the plane defined by the patient-facing surface of the substrate.

32. The method of claim 21, further comprising providing cooling channels in the mat.

33. The method of claim 21, further comprising providing a controller for at least one of selectively illuminating, controlling the light intensity, mixing colors, changing the illumination pattern, timing out, and shutting off the LEDs of the reverse-mount LED packages and operatively connecting same to the mat.

34. A method of providing phototherapy to at least a portion of a body of a patient using a phototherapy mat, the mat comprising a flexible substrate comprising a lower external-facing surface, an upper patient-facing surface, and a plurality of apertures disposed through the substrate and extending between the external-facing surface and the patient-facing surface, a plurality of reverse-mount LED packages configured for mounting and positioning on the external-facing surface of the substrate over corresponding apertures such that the LEDs thereof emit light upwardly through or from such apertures substantially in a first direction towards the patient-facing surface of the substrate, wherein light-projecting portions of the reverse-mount LED packages extend upwardly through the apertures substantially no further than a plane defined by the patient-facing surface of the substrate, each such package further being configured to dissipate heat primarily downwardly in a second direction away from the external-facing surface of the substrate, and a plurality of at least partially flexible electrically conductive traces operatively connected to the reverse-mount LED packages to provide electrical power, and optionally control signals, thereto, the method comprising:

(a) placing the mat in operative relation to the at least portion of the body of the patient, and

(b) electrically energizing the LEDs of the reverse-mount LED packages.