Portable handheld illumination system

• US 8,172,834 B2
• Filed: 09/24/2008
• Issued: 05/08/2012
• Est. Priority Date: 02/28/2007
• Status: Active Grant

• Current Assignee: Doheny Eye Institute
• Original Assignee: Doheny Eye Institute
• Inventors: Bhadri, Prashant R., DeBoer, Charles, McCormick, Matthew, Kerns, Ralph, Barnes, Aaron, Humayun, Mark S., Lue, Jaw-Chyng Lormen
• Primary Examiner(s): Vu, David Hung
• Application Number:
  US12/237,110
• Publication Number:
  US 20090146583A1
• Time in Patent Office: 1,322 Days
• Field of Search: 362/800, 362/552, 362/555, 600/132, 600/109, 315/149, 315/158, 315/156, 315/159, 315/157, 606/2
• US Class Current: 606/2
• CPC Class Codes: A61B 2017/00057 Light
• CPC Class Codes: A61B 2090/306 using optical fibres
• CPC Class Codes: A61B 2090/309 using white LEDs
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2560/0456 Apparatus provided with a docking unit
• CPC Class Codes: A61B 3/0008 provided with illuminating means A61B3/117 takes precedence; goniolenses used for laser treatment A61F9/009; illuminating means for optical instruments G02B27/00
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: A61B 5/749 Voice-controlled interfaces
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for
• CPC Class Codes: A61F 9/007 Methods or devices for eye surgery
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/18 using temperature feedback
• CPC Class Codes: H05B 47/12 by detecting audible sound
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Illumination systems are described that can include one or more light sources, which can include LEDs, one or more lenses, and one or more optical fibers. A handheld, portable, and surgical intraocular illumination system is disclosed that is disposable, low-cost, and efficient. A surgeon can have direct control of turning the illuminator on and off and adjusting the intensity via a simple control ergonomically placed on the handpiece and/or voice activated control. A coupling is provided, such as through an endo-probe, which is coupled to the one or more light sources. A user input device can be included that is operable to transmit to a feedback controller a first signal based on a user-selected light intensity. The feedback controller can, in response to the first signal, transmit a second signal to the power source for altering the power provided by the power source to the illumination system.

Claims

1. An ophthalmic surgical illumination system comprising:

a power source configured and arranged to produce a power output of a desired power;

a portable ophthalmic surgical handpiece configured for intraocular illumination including;

an illumination system configured and arranged to emit light in response to power received from the power source, the illumination system comprising a plurality of light emitting diodes;

a microprocessor configured to generate a pulse signal for sending to the plurality of light emitting diodes, wherein the pulse signal is configured to maintain the portable ophthalmic surgical handpiece at a desired temperature by reducing heat dissipation by the plurality of light emitting diodes;

a temperature sensor connected to the microprocessor, the temperature sensor configured to provide feedback to the microprocessor to maintain the portable ophthalmic surgical handpiece at the desired temperature;

a coupling system configured and arranged to select a wavelength range of the light from the illumination system;

a coupling interface configured and arranged to couple light from the coupling system into one or more optical fibers; and

a fiber output stage including one or more optical fibers and configured and arranged to deliver light from the coupling interface to a surgical site;

wherein the plurality of light emitting diodes comprises a first light emitting diode configured to emit white light and a second light emitting diode configured to emit color light to enerate contrast ratios for surgical illumination.

2. The system of claim 1, further comprising:

a feedback controller configured and arranged to adjust the power output of the power source; and

a user input device for controlling intensity of light emitted by the illumination system, the user input device transmitting to the feedback controller a first signal based on a user-selected light intensity, the feedback controller transmitting in response to the first signal, a second signal to the power source for altering the power output provided by the power source to the illumination system.

3. The system of claim 1, wherein the power source is disposed in the portable handpiece.

4. The system of claim 2, further comprising a sound sensor disposed within the portable handpiece and configured and arranged to detect spoken signals, wherein the sound sensor is configured and arranged to send an input signal to the feedback controller.

5. The system of claim 1, wherein the plurality of light emitting diodes comprises one or more LEDs operable to produce a green light output.

6. The system of claim 1, wherein the plurality of light emitting diodes comprises one or more LEDs operable to produce a blue light output.

7. The system of claim 1, wherein the plurality of light emitting diodes comprises one or more LEDs operable to produce a red light output.

8. The system of claim 1, wherein the plurality of light emitting diodes comprises two or more LEDs operable to produce a white light output.

14. The system of claim 1, wherein the desired temperature is less than 40 degrees C.

9. An ophthalmic surgical illumination system comprising:

a host system with a power source and a controller in communication with a handheld ophthalmic surgical illuminator having a microprocessor and a control mechanism communicating with the host system; and

wherein the handheld ophthalmic surgical illuminator comprises a plurality of light emitting diodes configured to emit light responsive to power received from the host system;

wherein the microprocessor is configured to generate a pulse sinal for sending to the plurality of light emitting diodes, wherein the pulse signal is configured to maintain the handheld ophthalmic surgical illuminator at a desired temperature by reducing heat dissipation by the plurality of light emitting diodes; and

wherein the plurality of light emitting diodes comprises a first light emitting diode configured to emit white light and a second light emitting diode configured to emit colored light and a coupling system within the handheld ophthalmic surgical illuminator to combine substantially white light from the first light emitting diode with colored light from the second light emitting diode to produce a tinted light.

10. The system of claim 9, wherein the handheld ophthalmic surgical illuminator includes an input device for controlling the power source on/off state of the emitted light and intensity of the emitted light of the handheld ophthalmic surgical illuminator.

11. The system of claim 10, wherein the input device comprises a user input device configured and arranged to transmit to the controller a first signal to turn on/off based on user selected power state, and wherein the controller is configured and arranged to transmit a second signal to the power source to initiate/terminate power to the plurality of light emitting diodes.

12. The system of claim 11, wherein the user input device is configured and arranged to transmit a third signal to the controller to change the intensity of the emitted light, and the controller is configured and arranged to transmit a fourth signal to the power source to alter the power to the handheld ophthalmic surgical illuminator.

13. The system of claim 12, wherein the user input device is configured and arranged to transmit a fifth signal to the controller to control first intensity and spectral range of the emitted light.

15. The system of claim 9, wherein the desired temperature is less than 40 degrees C.