Method of Operating An Ultrasound Handpiece

• US 20090306583A1
• Filed: 07/16/2009
• Published: 12/10/2009
• Est. Priority Date: 03/22/2004
• Status: Active Grant

• Current Assignee: Novartis Ag
• Original Assignee: Alcon Research Limited (Nestle SA)
• Inventors: Boukhny, Mikhail
• Granted Patent: US 8,172,786 B2
• Time in Patent Office: Days
• US Class Current: 604/22
• CPC Class Codes: A61B 2017/00106 ultrasonic
• CPC Class Codes: A61B 2017/00159 Pulse shapes
• CPC Class Codes: A61B 2017/00172 Pulse trains, bursts, intermittent continuous operation
• CPC Class Codes: A61B 2017/00181 Means for setting or varying the pulse energy
• CPC Class Codes: A61B 2017/22015 with details of the transmission member
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320089 node location
• CPC Class Codes: A61B 2017/320098 with transverse or torsional motion
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: Y10S 83/956 Ultrasonic

Abstract

A method of operating an ultrasonic handpiece by pulsing the power supplied to the handpiece and varying the type of vibration during the power pulse.

Claims

1. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse comprising an on portion during which vibrations are present at a hand piece tip and an off portion during which no vibrations are present at the hand piece tip;

wherein the on portion further comprises a first, low power torsional pulse period to avoid repulsion of lens material, followed by a second, high power longitudinal pulse period.

2. The method of claim 1 wherein the on portion is greater than 10 milliseconds.

3. The method of claim 1 wherein the second, high power longitudinal pulse period is less than 5 milliseconds.

4. The method of claim 1 wherein the on portion is of variable duration.

5. The method of claim 1 wherein the off portion is of variable duration.

6. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse during which vibrations are present at a hand piece tip;

wherein the periodic vibratory pulse further comprises a first, low power torsional pulse period to avoid repulsion of lens material, followed by a second, high power longitudinal pulse period.

7. The method of claim 6 wherein the on portion is greater than 10 milliseconds.

8. The method of claim 6 wherein the second, high power longitudinal pulse period is less than 5 milliseconds.

9. The method of claim 6 wherein the on portion is of variable duration.

10. The method of claim 6 wherein the off portion is of variable duration.

11. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse comprising an on portion during which vibrations are present at a hand piece tip and an off portion during which no vibrations are present at the hand piece tip;

wherein the on portion further comprises a first, high power longitudinal pulse period, followed by a second low power torsional pulse period to avoid repulsion of lens material.

12. The method of claim 11 wherein the on portion is greater than 10 milliseconds.

13. The method of claim 11 wherein the first, high power longitudinal pulse period is less than 5 milliseconds.

14. The method of claim 11 wherein the on portion is of variable duration.

15. The method of claim 11 wherein the off portion is of variable duration.

16. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse during which vibrations are present at a hand piece tip;

wherein the periodic vibratory pulse further comprises a first, high power longitudinal pulse period, followed by a second, low power torsional pulse period to avoid repulsion of lens material.

17. The method of claim 16 wherein the on portion is greater than 10 milliseconds.

18. The method of claim 16 wherein the first, high power longitudinal pulse period is less than 5 milliseconds.

19. The method of claim 16 wherein the on portion is of variable duration.

20. The method of claim 16 wherein the off portion is of variable duration.

21. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse during which vibrations are present at a hand piece tip, the periodic vibratory pulse further comprising a high power period and a low power period;

wherein the high power period comprises a first torsional pulse period to avoid repulsion of lens material, followed by a second, longitudinal pulse period.

22. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse during which vibrations are present at a hand piece tip, the periodic vibratory pulse further comprising a high power period and a low power period;

wherein the high power period comprises a first, longitudinal pulse period followed by a second, torsional pulse period to avoid repulsion of lens material.

23. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse during which vibrations are present at a hand piece tip, the periodic vibratory pulse further comprising a high power period and a low power period;

wherein the low power period comprises a first torsional pulse period to avoid repulsion of lens material, followed by a second, longitudinal pulse period.

24. A method of operating an ultrasound hand piece, the method comprising:

producing at least one periodic vibratory pulse during which vibrations are present at a hand piece tip, the periodic vibratory pulse further comprising a high power period and a low power period;

wherein the low power period comprises a first, longitudinal pulse period followed by a second, torsional pulse period to avoid repulsion of lens material.