Method and apparatus for material processing

• US 7,180,920 B2
• Filed: 03/18/2004
• Issued: 02/20/2007
• Est. Priority Date: 03/18/2003
• Status: Expired due to Fees

• Current Assignee: LOMA Linda University Medical Center (Mission Healthcare Services LLC)
• Original Assignee: LOMA Linda University Medical Center (Mission Healthcare Services LLC)
• Inventors: Fallara, Paul M., Joseph, Andrew P., Coleman, Paul, Burnham, Tim, Denney, Paul E., Patena, Michael N., Phillips, John S., Huang, Ta-Chieh, Eastman, Jay R.
• Primary Examiner(s): Vo; Tuyet
• Assistant Examiner(s): VU, JIMMY T
• Application Number:
  US10/803,272
• Publication Number:
  US 20040208212A1
• Time in Patent Office: 1,069 Days
• Field of Search: 219/121.6, 219/121.7, 219/121.68, 219/121.78, 219/121.79, 372/43, 372/92, 372/38.01, 372/38.02, 385/9, 385/14
• US Class Current: 372/38.02
• CPC Class Codes: B23K 26/032 using optical means
• CPC Class Codes: B23K 26/0884 in at least in three axial directions, e.g. manipulators, robots
• CPC Class Codes: B23K 26/12 in a special atmosphere, e.g. in an enclosure
• CPC Class Codes: B23K 26/123 in an atmosphere of particular gases
• CPC Class Codes: B23K 26/128 Laser beam path enclosures
• CPC Class Codes: B23K 26/1464 Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire

Abstract

An apparatus processes a surface of an inhabitable structure. The apparatus includes a laser base unit adapted to provide laser light to an interaction region, the laser light removing material from the structure. The laser base unit includes a laser generator and a laser head coupled to the laser generator. The laser head is adapted to remove the material from the interaction region, thereby providing reduced disruption to activities within the structure. The apparatus further includes an anchoring mechanism adapted to be releasably coupled to the structure and releasably coupled to the laser head. The apparatus further includes a controller electrically coupled to the laser base unit. The controller is adapted to transmit control signals to the laser base unit in response to user input.

Claims

1. An apparatus for processing a surface of an inhabitable structure, the apparatus comprising:

a laser base unit adapted to provide laser light to an interaction region, the laser light removing material from the structure, the laser base unit comprising a laser generator and a laser head coupled to the laser generator, the laser head adapted to remove the material from the interaction region, thereby providing reduced disruption to activities within the structure;

an anchoring mechanism adapted to be releasably coupled to the structure and releasably coupled to the laser head; and

a controller electrically coupled to the laser base unit, the controller adapted to transmit control signals to the laser base unit in response to user input.

2. The apparatus of claim 1, wherein the laser head is releasably coupled to the laser generator and the controller is releasably coupled to the laser base unit, whereby the apparatus can be reversibly assembled and disassembled to facilitate transportation of the apparatus to locations in proximity to or within the structure.

3. The apparatus of claim 1, wherein the laser generator comprises an arc-lamp-pumped Nd:

YAG laser.

4. The apparatus of claim 1, wherein the laser generator comprises a fiber laser.

5. The apparatus of claim 1, wherein the laser head comprises laser optical elements adapted to receive laser light from the laser generator and to direct the laser light to the interaction region.

6. The apparatus of claim 1, wherein the laser head comprises a containment plenum adapted to confine the material and to remove the material from the interaction region.

7. The apparatus of claim 6, wherein the containment plenum is further adapted to reduce noise and light emitted out of the containment plenum from the interaction region.

8. The apparatus of claim 6, wherein the containment plenum comprises an extraction port which provides a pathway for removal of the material from the containment plenum.

9. The apparatus of claim 6, wherein the containment plenum comprises a resilient interface adapted to contact the structure and to substantially surround the interaction region, thereby facilitating confinement and removal of material from the interaction region.

10. The apparatus of claim 9, wherein the resilient interface comprises a wire brush.

11. The apparatus of claim 1, wherein the laser head comprises a nozzle fluidly coupled to a compressed gas supply, the nozzle adapted to direct a compressed gas stream to the interaction region.

12. The apparatus of claim 1, wherein the anchoring mechanism comprises one or more resilient vacuum pads coupled to at least one vacuum generator.

13. The apparatus of claim 1, further comprising a detector coupled to the controller and adapted to detect embedded material in the structure while processing the structure, and to transmit detection signals to the controller, the controller adapted to avoid substantially damaging the embedded material by transmitting appropriate control signals to the laser base unit.

14. The apparatus of claim 13, wherein the detector is adapted to detect embedded material by using light emitted by the interaction region during processing.

15. An apparatus for processing a surface of an inhabitable structure with reduced disruption to activities within the structure, the apparatus comprising:

means for generating laser light;

means for providing the laser light to an interaction region of the structure to remove material from the structure;

means for confining the material and removing the material from the interaction region;

means for releasably anchoring the providing means to the structure; and

means for releasably coupling the providing means to the anchoring means.

21. The apparatus of claim 15, further comprising means for controlling the laser light in response to user input.

16. A method of processing a surface of an inhabitable structure with reduced disruption to activities within the structure, the method comprising:

providing an apparatus comprising;

a laser generator;

a laser head coupled to the laser generator, the laser head adapted to remove material from an interaction region, thereby providing reduced disruption to activities within the structure, wherein the laser generator is positioned remotely from the interaction region; and

an anchoring mechanism adapted to be releasably coupled to the structure and releasably coupled to the laser head;

releasably coupling the anchoring mechanism to the structure and to the laser head;

remotely generating laser light using the laser generator;

providing the laser light to the surface using the laser head, causing the laser light to interact with the structure in the interaction region to remove material from the structure; and

confining the material and removing the material from the interaction region.

22. The method of claim 16, wherein the laser generator is positioned remotely from the laser head.

23. The method of claim 16, further comprising the step of controlling the laser light in response to user input.

17. An apparatus for processing a surface of an inhabitable structure, the apparatus comprising:

a base unit adapted to provide energy waves to an interaction region, the energy waves removing material from the structure, the base unit comprising a generator and a head coupled to the generator, the head adapted to remove the material from the interaction region, thereby providing reduced disruption to activities within the structure;

an anchoring mechanism adapted to be releasably coupled to the structure and releasably coupled to the head; and

a controller electrically coupled to the base unit, the controller adapted to transmit control signals to the base unit in response to user input.

18. The apparatus of claim 17, wherein the energy waves are electromagnetic waves.

19. The apparatus of claim 17, wherein the energy waves are ultrasonic waves.

20. The apparatus of claim 17, wherein the energy waves are acoustic waves.