System and method for pulsed ultrasonic power delivery employing cavitational effects
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-017/32
A61F-009/007
B06B-001/02
A61B-017/00
A61B-018/00
출원번호
US-0927655
(2010-11-18)
등록번호
US-8945162
(2015-02-03)
발명자
/ 주소
Kadziauskas, Kenneth E.
Rockley, Paul W.
Schafer, Mark
출원인 / 주소
Abbott Medical Optics Inc.
대리인 / 주소
Abbott Medical Optics Inc.
인용정보
피인용 횟수 :
0인용 특허 :
93
초록▼
A method and apparatus for delivering energy during a surgical procedure such as phacoemulsification is provided. The method and apparatus include delivering energy during a surgical procedure, including applying energy at a level and for a time period sufficient to induce transient cavitation, and
A method and apparatus for delivering energy during a surgical procedure such as phacoemulsification is provided. The method and apparatus include delivering energy during a surgical procedure, including applying energy at a level and for a time period sufficient to induce transient cavitation, and reducing applied energy after applying energy during a second nonzero lower energy period.
대표청구항▼
1. A method for delivering ultrasonic energy during a surgical procedure performed within a surgical environment comprising a fluid, comprising: applying ultrasonic energy at a first energy level above a de minimis energy level for a time period sufficient to induce transient cavitation within the f
1. A method for delivering ultrasonic energy during a surgical procedure performed within a surgical environment comprising a fluid, comprising: applying ultrasonic energy at a first energy level above a de minimis energy level for a time period sufficient to induce transient cavitation within the fluid, wherein the time period is between two and three milliseconds; andproviding ultrasonic energy for a predetermined period after attaining transient cavitation within the fluid according to a successively decreasing stepped-down ultrasonic energy level profile comprising applying energy at a nonzero second lower constant value energy level above the de minimis energy level and lower than the first energy level;wherein the predetermined period begins immediately after the time period ends, and wherein ultrasonic energy is provided at a zero energy level before the time period and after applying ultrasonic energy according to the successively decreasing stepped down ultrasonic energy level profile. 2. The method of claim 1, wherein the predetermined period is less than three milliseconds. 3. The method of claim 1, wherein the predetermined period is less than one millisecond. 4. The method of claim 1, further comprising providing additional ultrasonic energy at a predetermined period after said providing ultrasonic energy at a third energy level. 5. The method of claim 4, further comprising applying zero energy subsequent to said providing ultrasonic energy at the third energy level. 6. The method of claim 5, further comprising repeating said applying and automatically providing after applying zero energy. 7. The method of claim 1, wherein the second energy level is greater than half the first energy level. 8. A method of delivering ultrasonic energy during a tissue removal procedure employed in association with a fluid, comprising: applying ultrasonic energy at a high energy amplitude level above a de minimis energy level capable of inducing transient cavitation within the fluid for a period of time between two and three milliseconds; andimmediately after said period of time, providing ultrasonic energy for a predetermined period according to a successively decreasing stepped-down ultrasonic energy level profile comprising applying energy at a nonzero low constant value energy amplitude level above the de minimis energy level;wherein ultrasonic energy is provided at a zero energy level before the period of time and after applying ultrasonic energy according to the successively decreasing stepped-down ultrasonic energy level profile. 9. The method of claim 8, wherein automatically providing ultrasonic energy at the nonzero low constant value energy amplitude level comprises automatically providing ultrasonic energy at a value greater than de minimis power level and lower than the high energy amplitude level. 10. The method of claim 8, further comprising providing additional ultrasonic energy at a stepped-down second nonzero low energy amplitude level subsequent to said ultrasonic energy providing. 11. The method of claim 8, further comprising refraining from power delivery subsequent to said ultrasonic energy providing and repeating said applying and providing after a predetermined time period. 12. The method of claim 8, wherein applying ultrasonic energy occurs for a predetermined period of time calculated to induce said transient cavitation. 13. The method of claim 8, wherein applying ultrasonic energy causes a cavitational energy having a duration of less than eight milliseconds. 14. The method of claim 8, wherein applying ultrasonic energy causes a cavitational energy having a duration of less than four milliseconds. 15. A method for providing modulated ultrasonic energy to an ocular region during a phacoemulsification procedure, the method comprising: applying ultrasonic energy to the ocular region at a high energy level above a de minimis energy level calculated to induce transient cavitation within fluid in the ocular region, said ultrasonic energy applying occurring for a first predetermined time between two and three milliseconds;reducing application of ultrasonic energy to the ocular region according to a successively decreasing stepped-down ultrasonic energy level profile comprising applying energy at a constant nonzero level immediately after said first predetermined time for a predetermined period;further reducing application of ultrasonic energy to the ocular region to a zero energy level after applying ultrasonic energy according to the successively decreasing stepped-down ultrasonic energy level profile;waiting for a second predetermined period of time; andrepeating said applying, reducing, and further reducing. 16. The method of claim 15, wherein the constant nonzero level is greater than half of the high energy level. 17. The method of claim 15, wherein applying ultrasonic energy results in cavitational energy having a duration of less than eight milliseconds. 18. The method of claim 15, wherein applying ultrasonic energy results in cavitational energy having a duration of less than four milliseconds. 19. A surgical method, comprising: applying transient energy to an opthalmic surgical area comprising a fluid using transient ultrasonic energy applying means, said transient ultrasonic energy applying means configured to apply ultrasonic energy at an amplitude above a de minimis energy level and for a calculated time period sufficient to induce transient cavitation within the fluid, wherein the calculated time period is between two and three milliseconds;reducing said transient energy according to a successively decreasing stepped-down ultrasonic energy level profile comprising applying energy at a lower constant value nonzero amplitude energy level immediately after said calculated time period and applying the transient energy at the lower constant value nonzero amplitude energy level for a further time period; andfurther reducing said transient energy to a zero energy level after applying ultrasonic energy according to the successively decreasing stepped-down ultrasonic energy level profile;wherein the lower constant value nonzero amplitude energy level is greater than the zero energy level and less than the amplitude. 20. The method of claim 19, wherein reducing said transient energy comprises providing ultrasonic energy at a level greater than half the amplitude. 21. The method of claim 19, further comprising providing additional ultrasonic energy at a second lower constant value amplitude energy level subsequent to reducing said transient energy to a lower constant value amplitude energy level. 22. The method of claim 19, further comprising: refraining from ultrasonic power delivery subsequent to said further reducing; andrepeating said applying, reducing, and further reducing. 23. The method of claim 19, further comprising: repeating said applying, reducing, and further reducing. 24. The method of claim 19, wherein said applying transient energy causes application of an elevated level of transient cavitational energy for the time period of less than eight milliseconds. 25. The method of claim 19, wherein said applying transient energy causes application of an elevated level of transient cavitational energy for the time period of less than four milliseconds. 26. The method of claim 19, wherein said applying comprises ultrasonically vibrating a needle. 27. The method of claim 26, further comprising engaging at a first desired time when energy application is desired and disengaging at a second desired time when energy application is not desired. 28. The method of claim 27, wherein said engaging and disengaging is performed by a switch.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (93)
Lo Ying-Ching (Fremont CA) Escorcio Tolentino (San Leandro CA) Zambre Samuel (Palo Alto CA) Singh Ajeet (Berkeley CA), Analog drive for ultrasonic probe with tunable phase angle.
Wiener, Eitan T.; Donofrio, William T.; Kemerling, Robert Alan, Apparatus and method for altering generator functions in an ultrasonic surgical system.
Malis Jerry L. (King of Prussia PA) Malis Leonard I. (Queens NY) Acorcey Robert R. (Cherry Hill NJ) Klaus Harry E. (Bryn Mawr PA) Solt David L. (Fort Washington ; both ofn PA) DiJoseph Frank (Atco NJ, Bipolar RF generator.
Williams ; Jr. Daniel L. (Florissant MO) Kepley Kevin P. (Dellwood MO) Painter John A. (St. Charles MO), Control system for calibrating and driving ultrasonic transducer.
Woloszko, Jean; Davison, Terry S.; Hovda, David C.; Thapliyal, Hira V.; Eggers, Philip E., Electrosurgical apparatus having digestion electrode and methods related thereto.
Lo Ying-Ching (Fremont CA) Zambre Samuel (Palo Alto CA) Escorcio Tolentino (San Leandro CA), Linear power control for ultrasonic probe with tuned reactance.
Broadwin Alan (Brooklyn NY) Kreizman Alexander (Stamford CT) Puiam Chana (Queens NY) Podany Vaclav O. (East New Fairfield CT) Emery Leonard M. (West Haven CT), Method and apparatus for ultrasonic surgical fragmentation and removal of tissue.
Angelini Giov. Battista,ITX ; Regini Gualtiero,ITX, Method for optimizing the drive of a piezoelectric actuator, in particular for phacoemulsifier devices, by dynamic detection of its eletromechanical characteristics and devices based thereupon.
Mittelstein, Michael; Sorensen, John T.; Mirhashemi, Soheila; Gerg, James B.; Muri, John I.; Etherington, Roger F.; Ripley, John A., Methods, apparatus and system for removal of lenses from mammalian eyes.
Appelbaum Peter Francis ; Bisch Michael Evremonde ; Cochran Bruce Robert ; Eberhardt Christopher Michael ; Knight Jeffery Alan ; Painter John A. ; Ritter John Alan, Ophthalmic microsurgical system employing surgical module employing flash EEPROM and reprogrammable modules.
Barwick ; Jr. Billie J. (85 Hull St. Beverly MA 01915) Little James H. (6601 S. Country Club Dr. Oklahoma City OK 73159), Phacoemulsification method and apparatus.
Barwick ; Jr. Billie John (85 Hull St. Beverly MA 01915) Little James H. (6601 S. Country Club Dr. Oklahoma City OK 73159), Phacoemulsification system having ultrasonic power controlled by aspiration vacuum sensor.
Steven R. Visuri ; Luiz B. Da Silva ; Peter M. Celliers ; Richard A. London ; Duncan J. Maitland, IV ; Victor C. Esch, Photoacoustic removal of occlusions from blood vessels.
Ron Kurtz ; Gregory John Roy Spooner ; Douglas L. Miller ; Alun Roy Williams GB, Photodisruptive laser nucleation and ultrasonically-driven cavitation of tissues and materials.
Bisch Michael Evremonde ; Cochran Bruce Robert ; Eberhardt Christopher Michael ; Knight Jeffery Alan ; Ritter John Alan, Surgical system providing automatic reconfiguration.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.