Combined ultrasonic and laser device and method of use

• US 6,039,565 A
• Filed: 01/14/1998
• Issued: 03/21/2000
• Est. Priority Date: 01/14/1997
• Status: Expired due to Fees

• Current Assignee: Chou, Marilyn M., Herrick Tam, Ken T. Yu, King J.J. Yu
• Original Assignee: Chou, Marilyn M., Herrick Tam, Ken T. Yu, King J.J. Yu
• Inventors: Chou, Marilyn M., Yu, Ken T., Tam, Herrick, Yu, King J. J.
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US09/006,922
• Time in Patent Office: 797 Days
• Field of Search: 433/29 OR, 433/118, 433/119, 433/215
• US Class Current: 433/29
• CPC Class Codes: A61C 1/0046 Dental lasers surgical lasers A61B18/20; working by laser beam in general B23K26/00; lasers per se H01S3/00
• CPC Class Codes: A61C 1/07 with vibratory drive, e.g. ultrasonic

Abstract

A combined laser and ultrasonic device includes a combination laser and ultrasonic source, a control console and a combined laser and ultrasonic delivery handpiece. The system has three modes of operation: 1) laser energy only, 2) ultrasonic energy only and 3) combined laser and ultrasonic energy. All three modes of operation are controlled by a single foot-operated activation switch, which will operate the laser source, the ultrasonic source or both, depending on which mode the device is operating in according to a mode switch on the control console. The combined laser and ultrasonic delivery handpiece includes an ultrasonic transducer coupled to an ultrasonic vibrating tip, which is mounted in close proximity to a laser delivery wave guide, such as a flexible optical fiber. The combined laser and ultrasonic device can be used to perform a variety of surgical procedures, including an improved method of a laser excisional new attachment procedure (Laser E.N.A.P.), which is described for treatment of periodontal diseases.

Claims

1. Apparatus comprising:

a source of laser radiation;

a source of ultrasonic vibration;

means for directing the laser radiation and the ultrasonic vibration onto a common target area; and

a mode switch for selecting between three modes of operation;

laser energy only, ultrasonic energy only and combined laser and ultrasonic energy for simultaneously directing laser energy and the ultrasonic energy onto the common target area.

2. The apparatus of claim 1 wherein the means for directing the laser radiation and the ultrasonic vibration onto a common target area comprises a combined laser and ultrasonic delivery handpiece having an ultrasonic vibrating tip mounted in close proximity to a laser delivery wave guide.

3. The apparatus of claim 2 wherein the laser delivery wave guide comprises an optical fiber.

4. The apparatus of claim 3 wherein the optical fiber is positioned within an internal lumen within the ultrasonic vibrating tip.

5. The apparatus of claim 1 wherein the means for directing the laser radiation and the ultrasonic vibration onto a common target area comprises a laser delivery wave guide and a malleable member for selectively positioning the laser delivery wave guide.

6. The apparatus of claim 1 wherein the source of laser radiation comprises a variable pulse width laser.

7. The apparatus of claim 1 wherein the source of laser radiation comprises a laser selected from the group consisting of holmium:

YAG lasers, erbium lasers, excimer lasers, and CO₂ lasers.

8. The apparatus of claim 1 wherein the source of ultrasonic vibration comprises an ultrasonic transducer selected from the group consisting of magnetostrictive ultrasonic transducers and piezoelectric ultrasonic transducers.

9. The apparatus of claim 1 wherein the source of laser radiation comprises a Nd:

YAG laser.

10. The apparatus of claim 1 further comprising an activation switch for selectively activating the source of laser radiation, the source of ultrasonic vibration or both the source of laser radiation and the source of ultrasonic vibration, according to the mode selected by the mode switch.

11. A combined laser and ultrasonic delivery handpiece comprising an ultrasonic vibrating tip mounted in close proximity to a laser delivery wave guide and a malleable member for selectively positioning the laser delivery wave guide.

12. The combined laser and ultrasonic delivery handpiece of claim 11 wherein the laser delivery wave guide comprises an optical fiber.

13. The combined laser and ultrasonic delivery handpiece of claim 12 wherein the malleable member comprises a malleable tube for selectively positioning the optical fiber.

14. The combined laser and ultrasonic delivery handpiece of claim 11 wherein the ultrasonic vibrating tip is coupled to an ultrasonic transducer selected from the group consisting of magnetostrictive ultrasonic transducers and piezoelectric ultrasonic transducers.

15. The combined laser and ultrasonic delivery handpiece of claim 11 further comprising a mode switch for selecting between three modes of operation:

laser energy only, ultrasonic energy only and combined laser and ultrasonic energy.

16. A surgical method comprising:

(a) generating laser radiation;

(b) generating ultrasonic vibrations; and

(c) simultaneously directing the laser radiation and the ultrasonic vibrations onto a common target area.

17. The method of claim 16 further comprising:

(d) separately directing the laser radiation onto the common target area.

18. The method of claim 16 further comprising:

(d) separately directing the ultrasonic vibrations onto the common target area.

19. The method of claim 16 wherein step (c) comprises directing the laser radiation and the ultrasonic vibrations through a combined laser and ultrasonic delivery handpiece onto the common target area.

20. The method of claim 16 further comprising:

(d) sequentially directing the laser radiation and the ultrasonic vibrations onto the common target area.

21. The method of claim 16 wherein step (c) comprises directing the laser radiation and the ultrasonic vibrations onto a body tissue.

22. The method of claim 16 wherein step (c) comprises simultaneously directing the laser radiation and the ultrasonic vibrations onto a periodontal surface.