IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0587833
(2012-08-16)
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등록번호 |
US-8403921
(2013-03-26)
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발명자
/ 주소 |
- Palankar, Daniel V.
- Blumenkranz, Mark S.
- Andersen, Dan E.
- Mordaunt, David H.
|
출원인 / 주소 |
|
대리인 / 주소 |
Wilson Sonsini Goodrich & Rosati
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인용정보 |
피인용 횟수 :
10 인용 특허 :
88 |
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 system for cataract surgery on an eye of a patient, comprising: 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;an optical coher
1. A system for cataract surgery on an eye of a patient, comprising: 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;an optical coherence tomography (OCT) 3-Dimensional imaging system configured for imaging tissue of a cataractous crystalline lens of the patient;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, and programmed to automatically: a) acquire image data from locations distributed throughout a volume of the cataractous crystalline lens using the imaging system;b) construct one or more images of the patient's eye tissues from the image data, comprising an image of at least a portion of the crystalline lens;c) construct 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; andd) operate the optical scanning system and laser assembly to direct a 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 system of claim 1, wherein the computer control system is programmed to effect an alignment step so as to align a treatment beam with a target tissue of the patient. 3. The system of claim 2, wherein the alignment step comprises constructing an image of an alignment pattern on a tissue of the patient's eye. 4. The system of claim 3, wherein the alignment step comprises adjusting the size, location or shape of the alignment pattern based on user input. 5. The system of claim 1, wherein the posterior boundary does not transect the posterior capsule of the lens. 6. The system of claim 1, wherein the computer control system is programmed to construct a lens fragmentation region comprising a posterior boundary that does not transect the posterior capsule of the lens. 7. The system of claim 6, wherein the lens fragmentation region comprises a constructed anterior boundary and said posterior boundary of the lens fragmentation region. 8. The system of claim 6, wherein the computer control system is programmed to operate the optical scanning system and the laser assembly so as to direct a treatment beam in a second pattern based on the fragmentation region so as to fragment the crystalline lens. 9. The system of claim 1, wherein the computer control system is programmed to define 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. 10. The system of claim 1, wherein the computer control system is programmed to receive input from a user input interface and identify one or more parameters of the cataract surgery procedure based at least in part on the received user input. 11. A system for cataract surgery on an eye of a patient, comprising: 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;an optical coherence tomography 3-Dimensional imaging system configured for imaging tissue of a cataractous crystalline lens of the patient;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, and programmed to automatically: a) acquire image data from locations distributed throughout a volume of the crystalline lens using the imaging system;b) identify one or more tissue structures of the cataractous crystalline lens based on the image data, the one or more structures comprising an anterior capsule boundary;c) construct 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; andd) operate the optical scanning system and laser assembly to direct a treatment beam in a pattern based on the anterior capsulotomy cutting region so as to create an anterior capsulotomy in the crystalline lens. 12. The system of claim 1, wherein the computer control system is programmed to effect an alignment step so as to align a treatment beam with a target tissue of the patient. 13. The system of claim 11, wherein the computer control system is programmed to construct one or more images of the patient's eye tissues from the image data, comprising an image of at least a portion of the crystalline lens. 14. The system of claim 11, wherein the computer control system is programmed to: construct a lens fragmentation region comprising a posterior boundary that does not transect the posterior capsule of the lens; and operate the optical scanning system and the laser assembly so as to direct a treatment beam in a second pattern based on the fragmentation region so as to fragment the crystalline lens. 15. The system of claim 14, wherein the computer control system is programmed to define 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. 16. The system of claim 11, further comprising a user input system for receiving input from a user comprising data that at least partially defines the one or more cutting regions. 17. A system for cataract surgery on an eye of a patient, comprising: 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;an optical coherence tomography 3-Dimensional imaging system configured for imaging tissue of a cataractous crystalline lens of the patient;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, and programmed to automatically: a) scan the patient's eye tissues with the imaging system so as to acquire image data of at least a portion of the crystalline lens;b) construct one or more images of the patient's eye tissues from the image data, comprising an image of at least a portion of the crystalline lens;c) construct 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;d) construct a lens fragmentation region comprising a posterior boundary that does not transect the posterior capsule of the lens;e) operate the optical scanning system and laser assembly to direct a treatment beam in a first pattern based on the anterior capsulotomy cutting region so as to create an anterior capsulotomy in the crystalline lens; andf) operate the optical scanning system and the laser assembly to direct a treatment beam in a second pattern based on the fragmentation region so as to fragment the crystalline lens. 18. The system of claim 17, wherein the computer control system is programmed to effect an alignment step so as to align a treatment beam with a target tissue of the patient, the alignment step comprising constructing an image of an alignment pattern on a tissue of the patient's eye. 19. The system of claim 17, wherein the computer control system is programmed to define 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. 20. The system of claim 17, further comprising a user input system. 21. A system for cataract surgery on an eye of a patient, comprising: 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;a 3-dimensional (3-D) imaging system configured for imaging tissue of a cataractous crystalline lens of the patient;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, and programmed to automatically: a) acquire image data of the crystalline lens using the imaging system;b) identify one or more tissue structures of the cataractous crystalline lens based on the image data, the one or more structures comprising an anterior capsule portion;c) construct a 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, wherein the posterior cutting boundary is anterior to a posterior capsule of the lens;d) operate the optical scanning system and laser assembly based on the constructed cutting region so as to direct a treatment beam in a first cutting pattern so as to create an anterior capsulotomy in the anterior capsule portion of the lens; ande) operate the optical scanning system and laser assembly based on the constructed cutting region so as to direct a treatment beam in a second cutting pattern so as to effect cutting of cataractous lens tissue of the cutting region into a plurality of patterned segments or fragmented pieces for subsequent removal. 22. The system of claim 21, wherein constructing the cutting region comprises constructing an anterior capsulotomy cutting region and a lens segmentation or fragmentation region. 23. The system of claim 21, wherein one or more of the plurality of segments or fragmented pieces comprise a length of at least 1 mm.
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