# US 12,109,149 B2 · Avoiding blood vessels during direct selective laser trabeculoplasty

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- Number: US 12,109,149 B2
- Document ID: US12109149B2
- Status: Granted
- Kind: B2
- Application number: 17/136,052
- Filed: 2020-12-29
- Published: 2021-04-22
- Granted: 2024-10-08
- Earliest claimed: 2018-07-02
- Assignees: Belkin Vision Ltd.
- Applicants: Belkin Laser Ltd.
- Inventors: Zachary Sacks; Daria Lemann-Blumenthal; Daniel Elkayam; Masha Dobkin-Bekman
- Web page: https://patentgrep.com/patent/US12109149B2

## CPC

- A61F 9/008: using laser
- A61B 90/04: {Protection of tissue around surgical sites against effects of non-mechanical surgery, e.g. laser surgery (protection of eyes against laser radiation A61F9/022)}
- A61F 9/0079: {using non-laser electromagnetic radiation, e.g. non-coherent light or microwaves}
- A61F 9/00821: {for coagulation}
- A61F 9/00823: {Laser features or special beam parameters therefor}
- A61B 2090/049: {against light, e.g. laser}
- A61F 2009/00844: {Feedback systems}
- A61F 2009/00868: {Ciliary muscles or trabecular meshwork}
- A61F 2009/00891: {Glaucoma}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A system includes a radiation source and a controller. The controller is configured to designate, for irradiation, multiple target regions on an eye of a patient, and to perform an iterative process that includes, during each iteration of the process, acquiring an image of the eye, based on the image, calculating a location of a different respective one of the target regions, processing the image so as to identify any obstruction at the location, and provided no obstruction at the location is identified, causing the radiation source to irradiate the location. Other embodiments are also described.

## Claims

### Claim 1

A system, comprising:
a radiation source; and
a controller, configured to:
designate, for irradiation, multiple target regions on an eye of a patient, and
perform an iterative process that includes, during each iteration of the process:
acquiring an image of the eye,
based on the image, calculating a location of a different respective one of the target regions,
processing the image so as to identify any obstruction at the location, and
provided no obstruction at the location is identified, causing the radiation source to irradiate the location.

### Claim 2 (depends on 1)

The system according to claim 1, wherein the process further includes, during at least one iteration of the process:
by processing the image, identifying an obstruction at the location, and
in response to identifying the obstruction, refraining from causing the radiation source to irradiate the location.

### Claim 3 (depends on 2)

The system according to claim 2, wherein refraining from causing the radiation source to irradiate the location includes causing the radiation source to irradiate another location instead of the location.

### Claim 4 (depends on 2)

The system according to claim 2, wherein refraining from causing the radiation source to irradiate the location includes terminating the iteration without causing the radiation source to irradiate any portion of the eye during the iteration.

### Claim 5 (depends on 2)

The system according to claim 2, wherein the obstruction includes a blood vessel.

### Claim 6 (depends on 5)

The system according to claim 5,
wherein the controller is configured to designate the multiple target regions for irradiation with respective amounts of energy, and
wherein the process further includes, during at least one iteration of the process:
by processing the image, identifying an obstruction at the location, and
in response to identifying the obstruction, causing the radiation source to irradiate the location with another amount of energy that is less than the amount of energy designated for the target region.

### Claim 7

A method, comprising:
designating, for irradiation, multiple target regions on an eye of a patient; and
performing an iterative process that includes, during each iteration of the process:
acquiring an image of the eye,
based on the image, calculating a location of a different respective one of the target regions,
processing the image so as to identify any obstruction at the location, and
provided no obstruction at the location is identified, causing a radiation source to irradiate the location.

### Claim 8 (depends on 7)

The method according to claim 7, wherein the process further includes, during at least one iteration of the process:
by processing the image, identifying an obstruction at the location, and
in response to identifying the obstruction, refraining from causing the radiation source to irradiate the location.

### Claim 9 (depends on 8)

The method according to claim 8, wherein refraining from causing the radiation source to irradiate the location includes causing the radiation source to irradiate another location instead of the location.

### Claim 10 (depends on 8)

The method according to claim 8, wherein refraining from causing the radiation source to irradiate the location includes terminating the iteration without causing the radiation source to irradiate any portion of the eye during the iteration.

### Claim 11 (depends on 8)

The method according to claim 8, wherein the obstruction includes a blood vessel.

### Claim 12 (depends on 11)

The method according to claim 11,
wherein designating the multiple target regions for irradiation comprises designating the multiple target regions for irradiation with respective amounts of energy, and
wherein the process further includes, during at least one iteration of the process:
by processing the image, identifying an obstruction at the location, and
in response to identifying the obstruction, causing the radiation source to irradiate the location with another amount of energy that is less than the amount of energy designated for the target region.