System and method for plasma-mediated modification of tissue
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-009/008
출원번호
US-0701458
(2015-04-30)
등록번호
US-9668919
(2017-06-06)
발명자
/ 주소
Friedman, Neil
Seibel, Barry
Culbertson, William
Schuele, Georg
Andersen, Dan
출원인 / 주소
OPTIMEDICA CORPORATION
대리인 / 주소
Abbot Medical Optics Inc.
인용정보
피인용 횟수 :
0인용 특허 :
18
초록▼
A method for cataract surgery on an eye of a patient includes scanning a first focus position of a first pulsed laser beam at a first pulse energy of between one-half microjoule and 50 microjoules in a first scanning pattern to photodisrupt a first tissue structure portion with a plurality of pulses
A method for cataract surgery on an eye of a patient includes scanning a first focus position of a first pulsed laser beam at a first pulse energy of between one-half microjoule and 50 microjoules in a first scanning pattern to photodisrupt a first tissue structure portion with a plurality of pulses of the first laser beam to form an incised surface; and afterwards, scanning a second focus position of a second pulsed laser beam having a second pulse energy being between 50 microjoules and 5,000 microjoules in a second scanning pattern that is co-registered to the first scanning pattern to further photodisrupt the same first tissue structure portion with the second laser beam to further separate segments of the first tissue structure along the incised surface.
대표청구항▼
1. A method for cataract surgery on an eye of a patient, comprising: scanning a first focus position of a first pulsed laser beam at a first pulse energy of between one-half microjoule and 50 microjoules in a first scanning pattern to photodisrupt a first tissue structure portion with a plurality of
1. A method for cataract surgery on an eye of a patient, comprising: scanning a first focus position of a first pulsed laser beam at a first pulse energy of between one-half microjoule and 50 microjoules in a first scanning pattern to photodisrupt a first tissue structure portion with a plurality of pulses of the first laser beam to form an incised surface; andafter scanning first focus position of the first laser beam in the first scanning pattern, scanning a second focus position of a second pulsed laser beam having a second pulse energy being between 50 microjoules and 5,000 microjoules in a second scanning pattern that is co-registered to the first scanning pattern to dispose the second focal position on the incised surface for a plurality of pulses of the second laser beam to further photodisrupt the same first tissue structure portion with the second laser beam to further separate segments of the first tissue structure along the incised surface,wherein the pulses of the first laser beam scanned in the first scanning pattern have a first pulse duration between 100 femtoseconds and 10 picoseconds, and the pulses of the second laser beam scanned in the second scanning pattern have a second pulse duration between 10 picoseconds and 10 nanoseconds and is longer than the first pulse duration. 2. The method of claim 1, wherein the first tissue structure portion is a portion of a crystalline lens of the eye. 3. The method of claim 1, wherein the controller is operatively coupled to the first and second laser sources, and configured to control the first and second pulse energies. 4. The method of claim 1, wherein the first scanning pattern is configured to divide the lens into two or more discrete segments. 5. The method of claim 1, wherein the first scanning pattern comprises a three-dimensional pattern wherein two or more pulses are targeted for two or more different depths within the targeted tissue structure portion. 6. The method of claim 1, wherein the pulses of the first laser beam scanned in the first scanning pattern have a substantially distinct range of pulse energies relative to the pulses of the second laser beam scanned in the second scanning pattern. 7. The method of claim 6, wherein the pulses of the first laser beam scanned in the first scanning pattern have a pulse energy of 1 microjoule to 20 microjoules and the pulses of the second laser beam scanned in the second scanning pattern have a pulse energy of 100 microjoules to 3 millijoules. 8. The method of claim 7, wherein the pulses of the first laser beam scanned in the first scanning pattern are directed to a deeper portion of the targeted tissue structure portion than the pulses of the second laser beam scanned in the second scanning pattern. 9. The method of claim 1, wherein the second scanning pattern comprises increased spacing between the focus position of adjacent pulses of the second laser beam relative to spacing between the focus position of adjacent pulses of the first laser beam in the first scanning pattern. 10. A method for cataract surgery on an eye of a patient, comprising: scanning a focus position of a first pulsed laser beam having a first pulse energy of between one-half microjoule and 50 microjoules in a first pattern so as to photodisrupt tissue with a plurality of pulses of the first laser beam to incise a plurality of intersecting cut planes within a lens; andafter scanning the focus position of the first laser in the first pattern, scan the focus position of a second pulsed laser beam having a second pulse energy being between 50 microjoules and 5,000 microjoules in a second pattern that is co-registered with the first pattern to dispose the focus position of the second laser on at least one of the cut planes for a plurality of pulses of the second laser beam so as to further photodisrupt tissue along at least one of the cut planes incised by the scanning of the first laser to further separate segments of the tissue along at least one of the cut planes incised by the first laser,wherein the pulses of the first laser beam scanned in the first scanning pattern have a first pulse duration between 100 femtoseconds and 10 picoseconds, and the pulses of the second laser beam scanned in the second scanning pattern have a second pulse duration between 10 picoseconds and 10 nanoseconds that is longer than the first pulse duration. 11. The method of claim 10, wherein the laser light source includes a first laser source configured to deliver the first laser beam and a second laser source configured to deliver the second laser beam. 12. The method of claim 10, wherein the second pattern comprises increased spacing between the focus positions of adjacent pulses of the second laser beam relative to spacing between the focus positions of adjacent pulses of the first laser beam in the first pattern. 13. The method of claim 10, wherein the pulses of the first laser beam scanned in the first scanning pattern are directed to a deeper portion of the targeted tissue structure portion than the pulses of the second laser beam scanned in the second scanning pattern. 14. A method for cataract surgery on an eye of a patient, comprising: scanning a focus position of a first pulsed laser beam having a first pulse energy of between one-half microjoule and 50 microjoules in a first pattern so as to photodisrupt tissue with a plurality of pulses of the first laser beam to incise a plurality of intersecting cut planes within a lens; andafter scanning the focus position of the first laser beam in the first pattern, scanning a focus position of a second pulsed laser beam, for a plurality of pulses of the second laser beam having a second pulse energy greater than the first pulse energy of between 50 microjoules and 5,000 microjoules in a second pattern that is co-registered with the first pattern so as to further photodisrupt tissue along at least one of the cut planes incised by the scanning of the first laser beam to further separate segments of the tissue along at least one of the cut planes incised by the scanning of the first laser beam,wherein the pulses of the first laser beam scanned in the first scanning pattern have a first pulse duration between 100 femtoseconds and 10 picoseconds, and the pulses of the second laser beam scanned in the second scanning pattern have a second pulse duration between 10 picoseconds and 10 nanoseconds and is different than the first pulse duration. 15. The method of claim 14, wherein the laser light source includes a first laser source configured to deliver the first laser beam and a second laser source configured to deliver the second laser beam. 16. The method of claim 14, wherein the second pattern comprises increased spacing between the focus positions of adjacent pulses of the second laser beam relative to spacing between the focus positions of adjacent pulses of the first laser beam in the first pattern.
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이 특허에 인용된 특허 (18)
Koester Charles J. ; Roberts James E., Contact lens element for examination or treatment of ocular tissues.
Booker Graham R. (c/o Department of Materials ; University of Oxford ; Parks Road Oxford OX1 3PH GB3) Laczik Zsolt J. (c/o Department of Materials ; University of Oxford ; Parks Road Oxford OX1 3PH G, Infra-red scanning microscopy.
Naranjo-Tackman, Ramón; Kuri, Jorge Octavio Villar; Frey, Rudolph W., Laser system and method for astigmatic corrections in association with cataract treatment.
Swanson Eric A. (Maynard MA) Huang David (Cambridge MA) Fujimoto James G. (Cambridge MA) Puliafito Carmen A. (Weston MA) Lin Charles P. (Somerville MA) Schuman Joseph S. (Boston MA), Method and apparatus for performing optical measurements.
Neev Joseph ; Da Silva Luiz B. ; Matthews Dennis L. ; Glinsky Michael E. ; Stuart Brent C. ; Perry Michael D. ; Feit Michael D. ; Rubenchik Alexander M., Ultrashort pulse high repetition rate laser system for biological tissue processing.
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