[특허]Photodisruptive laser fragmentation of tissue

Photodisruptive laser fragmentation of tissue 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61F-009/008 A61F-009/007
출원번호	US-0451881 (2014-08-05)
등록번호	US-9427356 (2016-08-30)
발명자 / 주소	Raksi, Ferenc
출원인 / 주소	ALCON LENSX, INC.
대리인 / 주소	Latimer, S. Brannon
인용정보	피인용 횟수 : 0 인용 특허 : 78

초록 ▼

A method of photodisruptive laser surgery includes selecting a target region of a tissue for fragmentation, directing a beam of laser pulses to the selected target region of the tissue, and forming cells in the target region of the tissue by directing the laser beam to generate cell boundaries. The cells can be arranged in regular or irregular arrays. The cells can be generated in parallel or successively, with cell sizes and laser parameters which reduce the time of ophthalmic surgery considerably.

대표청구항 ▼

1. A method of fragmenting lens tissue of an eye with a laser surgical system, the method comprising: generating a pulsed laser beam with a pulsed laser;directing the laser beam with an optics module towards a target region in the lens tissue; andcontrolling the optics module by a system control module to form a regular array of cells in the target region by creating layers of photodisrupted bubbles to generate cell boundaries, wherein the layers are created by scanning the pulsed laser with the optics module according to a curvature of the focal plane of the optics module to track the natural curvature of the lens. 2. The method of claim 1, the forming the regular array of cells comprising: forming the cells with a size suitable for extraction by aspiration without additional lens fragmentation. 3. The method of claim 1, the forming the regular array of cells comprising: forming the cells with a spatial extent less than 340 microns. 4. The method of claim 1, the forming the regular array of cells comprising: controlling the optics module by the system control module to form the cells with a size such that a ratio of a number of bubbles created to form the regular array of cells in the target region to a number of bubbles created to photodisrupt the same target region with a volumetric method is greater than 1:1.4. 5. The method of claim 1, wherein: walls of individual cells include photodisrupted bubbles other than corner bubbles of the cell, wherein the regular array of cells further comprises individual cells having walls that include photodisrupted bubbles to generate the cell boundaries. 6. The method of claim 1, wherein: the regular array of cells includes a set of cells in a periodically repeating array. 7. A method of fragmenting lens tissue with a laser surgical system, the method comprising: generating a pulsed laser beam with a pulsed laser;directing the pulsed laser beam with an optics module towards a target region in the lens tissue; andcontrolling the optics module by a system control module to form a regular array of cells in the target region by creating layers of photodisrupted bubbles to generate cell boundaries, wherein a size of the cells is suitable for extraction by aspiration without additional lens fragmentation; andwalls of individual cells include photodisrupted bubbles other than corner bubbles of the cell, wherein the regular array of cells further comprises individual cells having walls that include photodisrupted bubbles to generate the cell boundaries. 8. The method of claim 7, the forming the regular array of cells comprising: a spatial extent of the cells is less than 340 microns. 9. The method of claim 7, the forming the regular array of cells comprising: controlling the optics module by the system control module to form the cells with a size such that a ratio of a number of bubbles created to form the regular array of cells in the target region to a number of bubbles created to photodisrupt the same target region with a volumetric method is greater than 1.4. 10. The method of claim 9, the forming the regular array of cells comprising: controlling the optics module by the system control module to form the cells with a size such that a ratio of a number of bubbles created to form the regular array of cells in the target region to a number of bubbles created to photodisrupt the same target region with a volumetric method is greater than 4.5. 11. The method of claim 7, the forming the regular array of cells comprising: controlling the optics module by the system control module to form the cells with a size such that a ratio of the cell size to a bubble size is greater than 4.5. 12. The method of claim 7, the forming the regular array of cells comprising: controlling the optics module by the system control module to form the photodisrupted bubbles with a spot separation of less than 20 microns. 13. The method of claim 7, the creating layers comprising: controlling the optics module by the system control module to reduce a linear speed of progression of a bubble placement at turning points to be smaller than a limiting value. 14. The method of claim 7, the creating layers comprising: controlling the optics module by the system control module to form curved layers.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Photodisruptive laser fragmentation of tissue 원문보기

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Photodisruptive laser fragmentation of tissue 원문보기

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