LASER GENERATOR FOR MEDICAL TREATMENT

• US 20150257831A1
• Filed: 06/01/2015
• Published: 09/17/2015
• Est. Priority Date: 02/21/2010
• Status: Active Grant

• Current Assignee: Claser, Inc.
• Original Assignee: Claser, Inc.
• Inventors: Srinivasan, Pattanam
• Granted Patent: US 9,265,576 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2017/00172 Pulse trains, bursts, intermittent continuous operation
• CPC Class Codes: A61B 2018/00434 Neural system
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00642 with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/00708 switching the power on or off
• CPC Class Codes: A61B 2018/2005 with beam delivery through an interstitially insertable device, e.g. needle
• CPC Class Codes: A61B 2018/205547 Controller with specific architecture or programmatic algorithm for directing scan path, spot size or shape, or spot intensity, fluence or irradiance
• CPC Class Codes: A61D 1/00 Surgical instruments for veterinary use
• CPC Class Codes: A61N 2005/0612 using probes penetrating tissue; interstitial probes
• CPC Class Codes: A61N 2005/0662 Visible light
• CPC Class Codes: A61N 5/0601 Apparatus for use inside the body
• CPC Class Codes: A61N 5/067 using laser light

Abstract

A laser generator for laser therapy in the treatment of pain conditions by selective destruction of nociceptive or pain nerves, where a laser generator that generates a continuous and pulsed wavelength that is transmitted fiber-optically through a laser fiber within a spinal needle to contact areas within a body where pain nerves require destruction through optical absorption of laser energy by pain nerves without affecting other types of nerves or surrounding tissues. The laser generator can be used for treatment in humans, small animals and also large animals, which can receive pain relief without adverse effects.

Claims

1. A laser generator, comprising:

an electronic modulator that is configured to generate one of a continuous non-pulsed signal or a pulsed signal including a wavelength in a specified range;

a laser unit that is configured to generate a laser, wherein the laser unit is coupled to the electronic modulator such that the laser generator outputs a laser that is one of a continuous non-pulsed laser power output or a pulsed laser power output, wherein the laser power output includes a wavelength in the specified range;

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an electronic timer controller that is configured to be activated during operation of the laser unit and operable to limit delivery time of the laser; and

a watchdog circuit that is configured to terminate the laser power output that is output by the laser generator by interrupting power source to the laser unit in response to a determination that the electronic timer controller has failed.

2. The laser generator of claim 1, wherein the wavelength of the laser power output is between 700 nanometers (nm) and 705 nm.

3. The laser generator of claim 1, wherein the wavelength of the laser power output is between 440 to 460 nm.

4. The laser generator of claim 1, wherein the electronic modulator is configured to generate the pulsed power output including a pulse width in a range of nanoseconds, and wherein the laser generator is operable to output the pulsed laser power output including a 33 megahertz (MHz) high frequency pulsation and a pulse width that is one of 15 nanoseconds or 24 nanoseconds.

5. The laser generator of claim 1, including a power source that is configured to output power within a range between one of 1-6 milli-watts (mW), 7-24 mW, or up to 500 mW, and wherein the range is selected based on a size of the body to be treated.

6. The laser generator of claim 5, wherein the laser generator is operable to output an average power in a range of 12 mW with a peak power in a range of 24 mW associated with the pulsed laser power output that includes the 33 MHz high frequency pulsation and the pulse width of 15 nanoseconds.

7. The laser generator of claim 5, wherein the laser generator is operable to output an average power in a range of 19.2 mW with a peak power in a range of 24 mW associated with the pulsed laser power output that includes the 33 MHz high frequency pulsation and the pulse width of 24 nanoseconds.

8. The laser generator of claim 5, wherein the power source includes a rechargeable battery.

9. The laser generator of claim 1, comprising a user interface, wherein operation of the laser generator is controllable via user inputs provided through the user interface.

10. The laser generator of claim 9, wherein the user interface includes a touchscreen user interface.

11. The laser generator of claim 1, further comprising a user-operated shutoff button for emergency shutdown.

12. The laser generator of claim 1, further comprising a microcontroller, wherein the electronic modulator and the electronic timer are included in the microcontroller.

13. The laser generator of claim 12, wherein the microcontroller includes a power unit that is configured to control an amount of power that is provided to the laser unit.

14. The laser generator of claim 13, wherein the laser unit includes a first input that is configured to receive power from the power unit, and a second input that is configured to receive one of the continuous non-pulsed signal or the pulsed signal from the electronic modulator, and wherein the laser unit is operable to output the laser power output with power in a range between one of 1-6 mW, 7-24 mW, or in a range up to 500 mW.

15. The laser generator of claim 1, wherein the electronic timer controller is operable to limit the delivery time of the laser to one of 5 seconds or 10 seconds.

16. The laser generator of claim 1, comprising a fiber port that is configured to:

couple a fiber optic delivery system to the laser generator; and

transmit the laser power output that is output by the laser generator to the fiber optic delivery system for delivery to a treatment area.

17. The laser generator of claim 1, wherein the specified range of the wavelength is between 690 nm and 980 nm.

18. The laser generator of claim 1, wherein the watchdog circuit is configured to perform operations comprising:

monitoring the delivery time of the laser;

comparing the delivery time of the laser to a predetermined threshold;

in response to the comparing, determining whether the delivery time of the laser exceeds the predetermined threshold;

based on determining that the delivery time of the laser exceeds the predetermined threshold, determining that the electronic timer controller has failed; and

in response to determining that the electronic timer controller has failed, terminating the laser power output that is output by the laser generator.

19. The laser generator of claim 1, wherein the laser power output is configured for application to large animals.

20. The laser generator of claim 19, including a power source that is configured to output power proportional to the weight of the large animal.