System and method for determining dosimetry in ophthalmic photomedicine
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-018/18
A61F-009/008
A61B-018/20
A61N-005/06
A61B-090/00
A61B-003/10
출원번호
US-0951417
(2015-11-24)
등록번호
US-10052229
(2018-08-21)
발명자
/ 주소
Palanker, Daniel V.
Andersen, Dan E.
출원인 / 주소
Topcon Medical Laser Systems, Inc.
대리인 / 주소
Dentons US LLP
인용정보
피인용 횟수 :
0인용 특허 :
16
초록▼
A system and method for treating ophthalmic target tissue, including a light source for generating a beam of light, a beam delivery system that includes a scanner for generating patterns, and a controller for controlling the light source and delivery system to create a dosimetry pattern of the light
A system and method for treating ophthalmic target tissue, including a light source for generating a beam of light, a beam delivery system that includes a scanner for generating patterns, and a controller for controlling the light source and delivery system to create a dosimetry pattern of the light beam on the ophthalmic target tissue. One or more dosage parameters of the light beam vary within the dosimetry pattern, to create varying exposures on the target tissue. A visualization device observes lesions formed on the ophthalmic target tissue by the dosimetry pattern. The controller selects dosage parameters for the treatment beam based upon the lesions resulting from the dosimetry pattern, either automatically or in response to user input, so that a desired clinical effect is achieved by selecting the character of the lesions as determined by the dosimetry pattern lesions.
대표청구항▼
1. A system for treating ophthalmic target tissue, comprising: a light source;a beam delivery unit configured to deliver a beam of light from the light source to an eye, wherein the beam delivery unit includes a scanner unit configured to deflect the beam of light;a controller configured to control
1. A system for treating ophthalmic target tissue, comprising: a light source;a beam delivery unit configured to deliver a beam of light from the light source to an eye, wherein the beam delivery unit includes a scanner unit configured to deflect the beam of light;a controller configured to control the light source and the beam delivery unit to create a dosimetry pattern with the beam of light at a target area of the eye, the dosimetry pattern having a first dosage of light at a first portion of the target area and a second dosage of light at a second portion of the target area; anda visualization device configured to capture an image of the target area, wherein the controller is configured to control the light source and the beam delivery unit to deliver a treatment beam of light to a treatment area of the eye, the treatment beam of light having a dosage parameter based on the captured image of the target area. 2. The system of claim 1, wherein the first dosage of light is configured to generate an invisible lesion on the eye and the second dosage of light is configured to generate a visible lesion on the eye. 3. The system of claim 2, wherein the dosimetry pattern includes a third dosage of light at a third portion of the target area, the third dosage of light configured to generate a visible lesion on the eye. 4. The system of claim 3, wherein the second dosage is greater than the first dosage, and the third dosage is greater than the second dosage, and wherein the dosimetry pattern has a first distance between the second portion and the first portion, a second distance between the second portion and the third portion, and a third distance between the first portion and the third portion, the third distance being greater than the first distance and the second distance. 5. The system of claim 1, wherein the light source is a pulsed light source. 6. The system of claim 5, wherein the first dosage of light from the pulsed light source has a shorter pulse duration than the second dosage of light from the pulsed light source. 7. The system of claim 5, wherein the first dosage of light from the pulsed light source has a lower power density than the second dosage of light from the pulsed light source. 8. The system of claim 1, wherein the first portion of the target area does not overlap the second portion of the target area. 9. The system of claim 1, wherein the controller is further configured to command the beam delivery unit to scan the beam of light at a first rate in the first portion and at a second rate in the second portion. 10. The system of claim 1, wherein: the dosimetry pattern includes a third dosage of light at a third portion of the target area and a fourth dosage of light at a fourth portion of the target area;the first, second, third, and fourth portions of the target area form a matrix having two columns and two rows;the fourth portion is farther from the first portion than the second portion or the third portion;the first and fourth dosages of light are configured to produce visible lesions; andthe second or third dosage of light is configured to produce an invisible legion. 11. A system for treating ophthalmic target tissue, comprising: a light generation unit having a light source;a light delivery unit connected to the light generation unit, the light delivery unit including a scanner and an optical element;a visualization device connected to the light delivery unit and configured to capture an image of an eye, the eye having a first portion, a second portion and a third portion; anda control unit connected to the light generation unit and the light delivery unit, the control unit configured to deflect light from the light source to the eye to create a dosimetry pattern using the scanner, wherein the control unit is configured to: deliver a first light beam of the dosimetry pattern to the first portion, the first light beam having a first dosage;deliver a second light beam of the dosimetry pattern to the second portion, the second light beam having a second dosage, the second dosage greater than the first dosage; anddeliver a treatment light to the third portion, a dosage of the treatment light based on an image of the first portion and the second portion captured using the visualization device. 12. The system of claim 11, wherein the first dosage is configured to generate an invisible lesion on the eye and the second dosage is configured to generate a visible lesion on the eye. 13. The system of claim 12, wherein the eye includes a fourth portion, the control unit configured to deliver a third light beam of the dosimetry pattern to the fourth portion, the third light beam having a third dosage, the third dosage greater than the second dosage. 14. The system of claim 13, wherein the dosimetry pattern has a first distance between the second portion and the first portion, a second distance between the second portion and the fourth portion, and a third distance between the first portion and the fourth portion, the third distance being greater than the first distance and the second distance. 15. The system of claim 11, wherein the first portion does not overlap the second portion. 16. The system of claim 11, wherein: the visualization device is configured to capture the image of the eye, the eye having a fourth portion and a fifth portion; andthe control unit is configured to: deliver a third light beam of the dosimetry pattern to the fourth portion, having a third dosage; anddeliver a fourth light beam of the dosimetry pattern to the fifth portion, the fourth light beam having a fourth dosage; wherein: the first portion, second portion, fourth portion, and fifth portion are configured to form a matrix having two columns and two rows, the fifth portion farther from the first portion than the second portion or the fourth portion;the first and fourth dosages are configured to produce visible lesions; andthe second or third dosage is configured to produce an invisible legion. 17. A system for treating ophthalmic target tissue, comprising: a light source;a beam delivery unit configured to deliver a beam of light from the light source to an eye, wherein the beam delivery unit includes a scanner unit configured to deflect the beam of light;a controller configured to control the light source and the beam delivery unit to deliver a dosimetry pattern onto a target area of the eye, wherein a dosage parameter of the beam of light has a first value at a first portion of the dosimetry pattern and the dosage parameter of the beam of light has a second value at a second portion of the dosimetry pattern; anda visualization device configured to capture an image of the target area, wherein the controller is configured to control the light source and the beam delivery unit to deliver a treatment beam of light to a treatment area of the eye, and wherein a value of a dosage parameter of the treatment beam of light is based on the captured image of the target area. 18. The system of claim 17, wherein the first value of the dosage parameter is configured to generate an invisible lesion on the eye and the second value of the dosage parameter is configured to generate a visible lesion on the eye. 19. The system of claim 17, wherein a dosage parameter of the beam of light has a third value at a third portion of the dosimetry pattern, the second value greater than the first value and the third value greater than the second value. 20. The system of claim 17, wherein the first portion does not overlap the second portion.
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