IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0588966
(2012-08-17)
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등록번호 |
US-8709001
(2014-04-29)
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발명자
/ 주소 |
- Blumenkranz, Mark S.
- Palanker, Daniel V.
- Mordaunt, David H.
- Andersen, Dan E.
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
8 인용 특허 :
104 |
초록
▼
System and method for making incisions in eye tissue at different depths. The system and method focuses light, possibly in a pattern, at various focal points which are at various depths within the eye tissue. A segmented lens can be used to create multiple focal points simultaneously. Optimal incisi
System and method for making incisions in eye tissue at different depths. The system and method focuses light, possibly in a pattern, at various focal points which are at various depths within the eye tissue. A segmented lens can be used to create multiple focal points simultaneously. Optimal incisions can be achieved by sequentially or simultaneously focusing lights at different depths, creating an expanded column of plasma, and creating a beam with an elongated waist.
대표청구항
▼
1. A method for cataract surgery on an eye of a patient using a pulsed laser surgical system, comprising: operating an imaging system so as to acquire image data from locations distributed throughout a volume of a cataractous crystalline lens of the patient and construct one or more images of the pa
1. A method for cataract surgery on an eye of a patient using a pulsed laser surgical system, comprising: operating an imaging system so as to acquire image data from locations distributed throughout a volume of a cataractous crystalline lens of the patient and construct one or more images of the patient's eye tissues from the image data, wherein the one or more images comprise an image of at least a portion of the crystalline lens;constructing, using a computer system, an anterior capsulotomy cutting region based on the image data, the capsulotomy cutting region comprising an anterior cutting boundary axially spaced from a posterior cutting boundary so as to define an axially-elongated cutting zone transecting the anterior capsule; andoperating the surgical system to direct a pulsed laser treatment beam in a pattern based on the anterior capsulotomy cutting region so as to create an anterior capsulotomy in the crystalline lens. 2. The method of claim 1, wherein the imaging system is an optical coherence tomography imaging system. 3. The method of claim 1, further comprising aligning a treatment beam with a target tissue of the patient prior to creating the capsulotomy. 4. The method of claim 3, wherein the aligning comprises generating an image of an alignment pattern on a tissue of the patient's eye. 5. The method of claim 4, wherein the aligning comprises adjusting the size, location or shape of the alignment pattern based on user input. 6. The method of claim 1, wherein the posterior boundary does not transect the posterior capsule of the lens. 7. The method of claim 1, further comprising identifying, using a computer system, a lens fragmentation region comprising a posterior boundary that does not transect the posterior capsule of the lens. 8. The method of claim 7, wherein the lens fragmentation region comprises a constructed anterior boundary and said posterior boundary of the lens fragmentation region. 9. The method of claim 7, further comprising operating the surgical system so as to direct a treatment beam in a second pattern based on the fragmentation region so as to fragment the crystalline lens. 10. The method of claim 1, wherein all laser cutting occurs anterior to the posterior capsule surface. 11. The method of claim 1, entering user input to an interface so as to identify one or more parameters of the cataract surgery procedure. 12. The method of claim 1, wherein the pulsed laser surgical system comprises: a laser assembly for generating a pulsed laser treatment beam that creates dielectric breakdown in a focal zone of the treatment beam within tissues of the patient's eye so as to effect a cataract surgery procedure;the imaging system configured for imaging tissue of a cataractous crystalline lens of the patient using non-visible light;an optical scanning system configured for positioning the focal zone of the treatment beam to targeted locations of the crystalline lens; anda computer control system operatively coupled to the laser assembly, the imaging system, and the optical scanning system. 13. A method for cataract surgery on an eye of a patient using a pulsed laser surgical system, comprising: operating an optical coherence tomography (OCT) imaging system so as to acquire OCT image data from locations distributed throughout a volume of a crystalline lens of the patient;processing the image data using a computer system so as to identify and locate within the patient's lens an anterior capsulotomy cutting region comprising an anterior cutting boundary axially spaced from a posterior cutting boundary so as to define an axially-elongated cutting zone transecting the anterior capsule; andoperating the surgical system to direct a treatment laser beam in a pattern based on the anterior capsulotomy cutting region so as to create an anterior capsulotomy in the crystalline lens, wherein positioning of the treatment beam focal zone in the lens during the patterned cutting is guided by the computer system based on the constructed cutting region. 14. The method of claim 13, further comprising performing an alignment step, prior to creating the anterior capsulotomy, so as to align a treatment beam with a target tissue of the patient. 15. The method of claim 13, further comprising constructing, using a computer, one or more images of the patient's eye tissues from the image data, wherein the one or more images comprise an image of at least a portion of the crystalline lens. 16. The method of claim 13, further comprising identifying a lens fragmentation region comprising a posterior boundary that does not transect the posterior capsule of the lens; and operating the surgical system so as to direct a treatment beam in a second pattern based on the fragmentation region so as to fragment the crystalline lens. 17. The method of claim 16, further comprising identifying, using a computer, a posterior axial cutting limit for positioning of any treatment beam focal zone, such that the posterior axial cutting limit is located anterior to the posterior capsule surface. 18. The system of claim 13, further comprising receiving input from a user input system that at least partially defines one or more cutting regions. 19. The method of claim 13, wherein the constructing and locating the anterior capsulotomy cutting region further comprises receiving and processing user input. 20. A method for cataract surgery on an eye of a patient using a pulsed laser surgical system, comprising: scanning the patient's eye tissues with an imaging system so as to acquire image data of at least a portion of a crystalline lens of the patient and construct an image of at least a portion of the crystalline lens;constructing, using a computer system, an anterior capsulotomy cutting region based on the image data comprising an anterior cutting boundary axially spaced from a posterior cutting boundary so as to define an axially-elongated cutting zone transecting the anterior capsule;constructing, using the computer system, a lens fragmentation region comprising a posterior boundary that does not transect the posterior capsule of the lens;operating the surgical system to (a) direct a treatment laser beam in a first pattern based on the anterior capsulotomy cutting region so as to create an anterior capsulotomy in the crystalline lens; and (b) direct a treatment laser beam in a second pattern based on the fragmentation region so as to fragment the crystalline lens into a plurality of discrete patterned pieces for subsequent removal, wherein the positioning of the treatment laser beam in the first and second patterns is guided by the computer system. 21. The method of claim 20, further comprising identifying, using a computer, a posterior axial cutting limit for positioning of any treatment beam focal zone, such that the posterior axial cutting limit is located anterior to the posterior capsule surface. 22. The method of claim 20, wherein the imaging system is an optical coherence tomography imaging system. 23. A method for surgery on an eye of a patient using a pulsed laser surgical system, comprising: operating an imaging system so as to acquire image data from locations distributed throughout a volume of a crystalline lens of the patient;processing the image data using a computer system so as to construct cutting region data identifying (a) an anterior cutting boundary axially spaced from a posterior cutting boundary so as to define an axially-elongated cutting zone transecting the anterior capsule, and (b) a location of the cutting region within the patient's lens;determining parameters of a cutting pattern based on the image data and/or cutting region data; andoperating the surgical system to direct a focal zone of a laser treatment beam within the lens, wherein positioning of the treatment beam focal zone within the lens is guided by the computer system based on the cutting pattern so as to incise an anterior capsulotomy in the crystalline lens. 24. The method of claim 23, wherein the imaging system employs an optical coherence tomography imaging modality.
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