# US 8,771,261 B2 · Dynamic optical surgical system utilizing a fixed relationship between target tissue visualization and beam delivery

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- Number: US 8,771,261 B2
- Document ID: US8771261B2
- Status: Granted
- Kind: B2
- Application number: 11/789,964
- Filed: 2007-04-25
- Published: 2008-02-07
- Granted: 2014-07-08
- Earliest claimed: 2006-04-28
- Assignees: Topcon Medical Laser Systems, Inc.
- Applicants: Dan Andersen; David G. Angeley
- Inventors: Dan Andersen; David G. Angeley
- Web page: https://patentgrep.com/patent/US8771261B2

## CPC

- A61F 9/008: using laser
- A61B 18/22: the beam being directed along or through a flexible conduit, e.g. an optical fibre; {Couplings or} hand-pieces therefor
- A61B 2018/20351: {Scanning mechanisms}
- A61B 2018/20359: {by movable mirrors, e.g. galvanometric}
- A61B 2018/20361: {with redirecting based on sensed condition, e.g. tissue analysis or tissue movement}
- A61F 9/00821: {for coagulation}
- A61F 2009/00863: {Retina}
- A61F 2009/00872: {Cornea}
- 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 and method of treating target tissue that includes generating a treatment beam of light using a light source, directing the treatment beam onto target tissue using an optical element, generating an image of the target tissue from light emanating from the target tissue using a plurality of optical elements, and translating the light source, the optical element and/or the plurality of optical elements relative to the target tissue (using a translation device) to simultaneously move the treatment beam along the target tissue and the field of view of the target tissue as defined by the plurality of optical elements. Control electronics control the translation device to cause the treatment beam to move along the target tissue in a predetermined pattern.

## Claims

### Claim 1

A surgical device for treating a target tissue, comprising:
a light source configured to generate a treatment beam of light;
a mirror configured to reflect the treatment beam toward the target tissue and to direct the treatment beam onto the target tissue;
a plurality of optical elements configured to generate an image of the target tissue from light emanating from the target tissue;
a translation device configured to translate the mirror and the plurality of optical elements relative to the target tissue to simultaneously move the treatment beam along the target tissue and a field of view of the target tissue defined by the plurality of optical elements,
wherein the light source is configured to remain stationary while the minor and the plurality of optical elements are translated; and
control electronics for controlling the translation device to cause the treatment beam to move along the target tissue in a predetermined pattern.

### Claim 2 (depends on 1)

The surgical device of claim 1, further comprising:
an optical fiber for delivering the treatment beam to the mirror.

### Claim 3 (depends on 1)

The surgical device of claim 1, wherein at least one of the plurality of optical elements includes target indicia for visually referencing a location of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 4 (depends on 1)

The surgical device of claim 1, wherein the plurality of optical elements further comprises:
a reticle device for visually marking a location in the image of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 5 (depends on 4)

The surgical device of claim 4, wherein the reticle device further displays information about at least one of the treatment beam and an operation of the light source.

### Claim 6 (depends on 1)

The surgical device of claim 1, wherein the treatment beam directed onto the target tissue is pulsed, and wherein the predetermined pattern comprises a plurality of spaced apart spots.

### Claim 7 (depends on 6)

The surgical device of claim 6, wherein the spots are spaced apart by irregular spacing.

### Claim 8 (depends on 1)

The surgical device of claim 1, wherein the predetermined pattern comprises one or more curved or straight lines.

### Claim 9 (depends on 1)

The surgical device of claim 1, further comprising:
a second light source for generating an aiming beam of light, wherein the mirror directs the aiming beam onto the target tissue, and wherein the translation device translates at least one of the second light source, the mirror and the plurality of optical elements relative to the target tissue to simultaneously move the aiming beam along the target tissue and the field of view of the target tissue defined by the plurality of optical elements.

### Claim 10 (depends on 1)

The surgical device of claim 1, further comprising:
a graphic user interface for operating the control electronics.

### Claim 11

A surgical device for treating a target tissue, comprising:
a light source configured to generate a treatment beam of light;
a mirror configured to reflect the treatment beam toward the target tissue and to direct the treatment beam onto the target tissue;
a plurality of optical elements configured to generate an image of the target tissue from light emanating from the target tissue;
a translation device configured to translate the light source, the minor and the plurality of optical elements relative to the target tissue to simultaneously move the treatment beam along the target tissue and a field of view of the target tissue defined by the plurality of optical elements; and
control electronics for controlling the translation device to cause the treatment beam to move along the target tissue in a predetermined pattern.

### Claim 12 (depends on 11)

The surgical device of claim 11, wherein at least one of the plurality of optical elements includes target indicia for visually referencing a location of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 13 (depends on 11)

The surgical device of claim 11, wherein the plurality of optical elements further comprises:
a reticle device for visually marking a location in the image of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 14 (depends on 13)

The surgical device of claim 13, wherein the reticle device further displays information about at least one of the treatment beam and an operation of the light source.

### Claim 15 (depends on 11)

The surgical device of claim 11, wherein the treatment beam directed onto the target tissue is pulsed, and wherein the predetermined pattern comprises a plurality of spaced apart spots.

### Claim 16 (depends on 15)

The surgical device of claim 15, wherein the spots are spaced apart by irregular spacing.

### Claim 17 (depends on 11)

The surgical device of claim 11, wherein the predetermined pattern comprises one or more curved or straight lines.

### Claim 18 (depends on 11)

The surgical device of claim 11, further comprising:
a second light source for generating an aiming beam of light, wherein the mirror directs the aiming beam onto the target tissue, and wherein the translation device translates at least one of the second light source, the mirror and the plurality of optical elements relative to the target tissue to simultaneously move the aiming beam along the target tissue and the field of view of the target tissue defined by the plurality of optical elements.

### Claim 19 (depends on 11)

The surgical device of claim 11, further comprising:
a graphic user interface for operating the control electronics.

### Claim 20

A surgical device for treating a target tissue, comprising:
a light source configured to generate a treatment beam of light;
a mirror configured to reflect the treatment beam toward the target tissue and to direct the treatment beam onto the target tissue;
a plurality of optical elements configured to generate an image of the target tissue from light emanating from the target tissue;
a translation device configured to translate the mirror and some but not all of the plurality of optical elements relative to the target tissue to simultaneously move the treatment beam along the target tissue and a field of view of the target tissue defined by the plurality of optical elements; and
control electronics for controlling the translation device to cause the treatment beam to move along the target tissue in a predetermined pattern.

### Claim 21 (depends on 20)

The surgical device of claim 20, wherein at least one of the plurality of optical elements includes target indicia for visually referencing a location of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 22 (depends on 20)

The surgical device of claim 20, wherein the plurality of optical elements further comprises:
a reticle device for visually marking a location in the image of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 23 (depends on 22)

The surgical device of claim 22, wherein the reticle device further displays information about at least one of the treatment beam and an operation of the light source.

### Claim 24 (depends on 20)

The surgical device of claim 20, wherein the treatment beam directed onto the target tissue is pulsed, and wherein the predetermined pattern comprises a plurality of spaced apart spots.

### Claim 25 (depends on 24)

The surgical device of claim 24, wherein the spots are spaced apart by irregular spacing.

### Claim 26 (depends on 20)

The surgical device of claim 20, wherein the predetermined pattern comprises one or more curved or straight lines.

### Claim 27 (depends on 20)

The surgical device of claim 20, further comprising:
a second light source for generating an aiming beam of light, wherein the mirror directs the aiming beam onto the target tissue, and wherein the translation device translates at least one of the second light source, the mirror and the plurality of optical elements relative to the target tissue to simultaneously move the aiming beam along the target tissue and the field of view of the target tissue defined by the plurality of optical elements.

### Claim 28 (depends on 20)

The surgical device of claim 20, further comprising:
a graphic user interface for operating the control electronics.

### Claim 29

A surgical device for treating a target tissue, comprising:
a light source configured to generate a treatment beam of light;
a lens configured to direct the treatment beam onto the target tissue;
a plurality of optical elements configured to generate an image of the target tissue from light emanating from the target tissue, wherein the light emanating from the target tissue passes through the lens and to the plurality of optical elements;
a translation device configured to translate the lens relative to the target tissue to simultaneously move the treatment beam along the target tissue and a field of view of the target tissue defined by the plurality of optical elements;
control electronics for controlling the translation device to cause the treatment beam to move along the target tissue in a predetermined pattern;
a housing; and
a contact element mounted to the housing for making contact with a patient's eye, wherein the lens is mounted to the housing via the translation device, and wherein the translation device moves the lens relative to the housing.

### Claim 30 (depends on 29)

The surgical device of claim 29, wherein at least one of the plurality of optical elements includes target indicia for visually referencing a location of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 31 (depends on 29)

The surgical device of claim 29, wherein the plurality of optical elements further comprises:
a reticle device for visually marking a location in the image of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 32 (depends on 31)

The surgical device of claim 31 , wherein the reticle device further displays information about at least one of the treatment beam and an operation of the light source.

### Claim 33 (depends on 29)

The surgical device of claim 29, wherein the treatment beam directed onto the target tissue is pulsed, and wherein the predetermined pattern comprises a plurality of spaced apart spots.

### Claim 34 (depends on 33)

The surgical device of claim 33 , wherein the spots are spaced apart by irregular spacing.

### Claim 35 (depends on 29)

The surgical device of claim 29, wherein the predetermined pattern comprises one or more curved or straight lines.

### Claim 36 (depends on 29)

The surgical device of claim 29, further comprising:
a second light source for generating an aiming beam of light, wherein the lens directs the aiming beam onto the target tissue, and wherein the translation device translates at least one of the second light source, the lens and the plurality of optical elements relative to the target tissue to simultaneously move the aiming beam along the target tissue and the field of view of the target tissue defined by the plurality of optical elements.

### Claim 37 (depends on 29)

The surgical device of claim 29, further comprising:
a graphic user interface for operating the control electronics.

### Claim 38

A surgical device for treating a target tissue, comprising:
a light source configured to generate a treatment beam of light;
an optical element configured to direct the treatment beam onto the target tissue;
a plurality of optical elements configured to generate an image of the target tissue from light emanating from the target tissue;
a translation device configured to translate the light source and the plurality of optical elements relative to the target tissue to simultaneously move the treatment beam along the target tissue and a field of view of the target tissue defined by the plurality of optical elements,
wherein the optical element is configured to remain stationary while the light source and the plurality of optical elements are translated; and
control electronics for controlling the translation device to cause the treatment beam to move along the target tissue in a predetermined pattern.

### Claim 39 (depends on 38)

The surgical device of claim 38, wherein:
the treatment beam follows a first optical path from the light source, through the optical element and to the target tissue;
the light emanating from the target tissue follows a second optical path from the target tissue, through the optical element, and through the plurality of optical elements; and
the first and second optical paths are spatially separated but cross each other at a common location.

### Claim 40 (depends on 39)

The surgical device of claim 39, wherein:
the plurality of optical elements includes a lens that defines an object plane; and
the common location is located at the object plane.

### Claim 41 (depends on 38)

The surgical device of claim 38, wherein at least one of the plurality of optical elements includes target indicia for visually referencing a location of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 42 (depends on 38)

The surgical device of claim 38, wherein the plurality of optical elements further comprises:
a reticle device for visually marking a location in the image of the target tissue at which the treatment beam is incident on the target tissue.

### Claim 43 (depends on 42)

The surgical device of claim 42, wherein the reticle device further displays information about at least one of the treatment beam and an operation of the light source.

### Claim 44 (depends on 38)

The surgical device of claim 38, wherein the treatment beam directed onto the target tissue is pulsed, and wherein the predetermined pattern comprises a plurality of spaced apart spots.

### Claim 45 (depends on 44)

The surgical device of claim 44, wherein the spots are spaced apart by irregular spacing.

### Claim 46 (depends on 38)

The surgical device of claim 38, wherein the predetermined pattern comprises one or more curved or straight lines.

### Claim 47 (depends on 38)

The surgical device of claim 38, further comprising:
a second light source for generating an aiming beam of light, wherein the optical element directs the aiming beam onto the target tissue, and wherein the translation device translates at least one of the second light source, the optical element and the plurality of optical elements relative to the target tissue to simultaneously move the aiming beam along the target tissue and the field of view of the target tissue defined by the plurality of optical elements.

### Claim 48 (depends on 38)

The surgical device of claim 38, further comprising:
a graphic user interface for operating the control electronics.