Short duration pulse grid pattern laser treatment and methods
First Claim
1. A method for treating an eye of a patient comprising:
- directing, via a scanning system of a laser treatment system, an aiming beam onto retinal tissue of the patient'"'"'s eye;
defining, via the aiming beam, a first target position, and a second target position;
directing, via the scanning system of the laser treatment system, a treatment beam onto the retinal tissue of the patient'"'"'s eye; and
delivering, via the treatment beam, a series of pulses onto the retinal tissue at the first and second target positions to treat the retinal tissue, wherein a duration of each pulse is sufficiently short so as to avoid inducing photocoagulation of the retinal tissue that results in visible tissue damage, wherein the series of pulses directed to each position induce photoactivation of a therapeutic healing at that position, wherein the treatment beam is scanned between the first target position and the second target position between each pulse of the series, wherein the treatment beam is scanned during a relaxation interval of a respective target position such that the retinal tissue at the respective target position relaxes, the relaxation interval comprising at least 190 microseconds, and wherein the treatment beam is returned to the previously treated first and second target positions within the eye to deliver an additional series of pulses after the respective relaxation interval.
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Accused Products
Abstract
Embodiments of the invention provide systems and methods for treating the retina and/or other areas of a patient'"'"'s eye. The procedures may involve using one or more treatment beams (e.g., lasers) to cause photocoagulation or laser coagulation to finely cauterize ocular blood vessels and/or prevent blood vessel growth to induce one or more therapeutic benefits. In other embodiments, a series of short duration light pulses (e.g., between 5-15 microseconds) may be delivered to the retinal tissue with a thermal relaxation time delay between the pulse to limit the temperature rise of the target retinal tissue and thereby limit a thermal effect to only the retinal pigment epithelial layer. Such procedures may be used to treat diabetic retinopathy, macular edema, and/or other conditions of the eye. The treatment beam may be delivered within a treatment boundary or pattern defined on the retina of the patient'"'"'s eye.
57 Citations
15 Claims
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1. A method for treating an eye of a patient comprising:
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directing, via a scanning system of a laser treatment system, an aiming beam onto retinal tissue of the patient'"'"'s eye; defining, via the aiming beam, a first target position, and a second target position; directing, via the scanning system of the laser treatment system, a treatment beam onto the retinal tissue of the patient'"'"'s eye; and delivering, via the treatment beam, a series of pulses onto the retinal tissue at the first and second target positions to treat the retinal tissue, wherein a duration of each pulse is sufficiently short so as to avoid inducing photocoagulation of the retinal tissue that results in visible tissue damage, wherein the series of pulses directed to each position induce photoactivation of a therapeutic healing at that position, wherein the treatment beam is scanned between the first target position and the second target position between each pulse of the series, wherein the treatment beam is scanned during a relaxation interval of a respective target position such that the retinal tissue at the respective target position relaxes, the relaxation interval comprising at least 190 microseconds, and wherein the treatment beam is returned to the previously treated first and second target positions within the eye to deliver an additional series of pulses after the respective relaxation interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for treating an eye of a patient comprising:
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directing, via a scanning system, an aiming beam onto retinal tissue of the patient'"'"'s eye; defining, via the aiming beam, a plurality of target positions; directing, via the scanning system, a treatment beam onto the retinal tissue of the patient'"'"'s eye; and delivering, via the treatment beam, a series of pulses onto the retinal tissue at the plurality of target positions to treat the retinal tissue, wherein the treatment beam is scanned between a different target position between each pulse of the treatment beam and the treatment beam is scanned during a relaxation interval of a respective target position such that the retinal tissue at the respective target position relaxes, the relaxation interval comprising at least 190 microseconds, wherein a duration of each pulse is sufficiently short so as to avoid inducing photocoagulation of the retinal tissue that results in visible tissue damage, and wherein the series of pulses directed to each target position induce photoactivation of a therapeutic healing at that position, and wherein the treatment beam is returned to previously treated target positions within the eye to deliver an additional series of pulses after the respective relaxation interval. - View Dependent Claims (15)
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Specification