System and method for treating the structure of the human lens with a laser

• US 10,842,675 B2
• Filed: 01/20/2006
• Issued: 11/24/2020
• Est. Priority Date: 01/20/2006
• Status: Active Grant

• Current Assignee: LensAR, Inc. (PDL BioPharma, Inc.)
• Original Assignee: LensAR, Inc. (PDL BioPharma, Inc.)
• Inventors: Frey, Rudolph W., Gray, Gary P., Pape, Dennis R., Kuszak, Jerome
• Primary Examiner(s): Eiseman, Lynsey C
• Application Number:
  US11/337,127
• Publication Number:
  US 20070173794A1
• Time in Patent Office: 5,422 Days
• CPC Class Codes: A61B 2018/20351 Scanning mechanisms
• CPC Class Codes: A61B 2018/20355 Special scanning path or conditions, e.g. spiral, raster or providing spot overlap
• CPC Class Codes: A61B 2018/20361 with redirecting based on sensed condition, e.g. tissue analysis or tissue movement
• CPC Class Codes: A61B 90/30 Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
• CPC Class Codes: A61B 90/361 Image-producing devices, e.g. surgical cameras
• CPC Class Codes: A61F 2009/0087 Lens
• CPC Class Codes: A61F 2009/00887 Cataract
• CPC Class Codes: A61F 2009/00897 Scanning mechanisms or algorithms
• CPC Class Codes: A61F 9/00736 Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments A61F9/008 takes precedence
• CPC Class Codes: A61F 9/008 using laser
• CPC Class Codes: A61F 9/00834 Inlays; Onlays; Intraocular lenses [IOL]

Abstract

A system and method for increasing the amplitude of accommodation and/or changing the refractive power and/or enabling the removal of the clear or cataractous lens material of a natural crystalline lens is provided. Generally, the system comprises a laser, optics for delivering the laser beam and a control system for delivering the laser beam to the lens in a particular pattern. There is further provided a device for determining the shape and position of the lens with respect to the laser. There is yet further provided a method and system for delivering a laser beam in the lens of the eye in a predetermined shot pattern that utilize as series of shots that form a shell cut, a partial shell cut, a laser suture cut and/or a volumetric shaped removal, which essentially following the shape of a

suture layer of the lens.

Claims

1. A method for delivering a laser beam to a lens of an eye comprising:

a. providing a laser beam from a laser in a laser delivery system;

b. the laser delivery system defining an optical path, whereby the laser delivery system directs the laser beam along the optical path from the laser to the lens of the eye;

wherein components are located in the optical path, the components comprising;

an x y scanner;

a z focus mechanism; and

, a reference;

wherein the reference is configured for use in making a laser lens positional determination;

c. the laser delivery system determining the shape and position of the lens with respect to the laser;

(i) based upon the reference and (ii) based upon mathematical modeling and observation data; and

,

d. the laser delivery system automatically focusing the laser beam to a location in the lens of the eye;

wherein the location is selected based upon the determinations of step c.

2. The method of claim 1, wherein the reference is a reference mark and is located on a patient interface device.

3. The method of claim 1, comprising directing the laser beam in the lens of the eye in a predetermined shot pattern;

the lens defining a shape;

the shot pattern comprising a series of shots that form a volumetric shaped removal, the volumetric shaped removal being positioned entirely within the lens and essentially following the shape of the lens.

4. The method of claim 1, comprising the step of directing the laser beam in a shot pattern to from an annular ring shaped capsulorhexis.

5. The method of claim 4, comprising:

directing the laser beam in the lens of the eye in a predetermined shot pattern, the shot pattern comprising a series of shots that form a grid cut pattern;

removing the lens material; and

,

replacing the lens material.

6. A method for delivering a laser beam to a lens of an eye comprising:

a. providing a laser beam from a laser in a laser delivery system;

the laser delivery system further comprising a lens model and a control system;

b. providing to the laser delivery system observation data of a position of the lens with respect to the laser system;

the laser delivery system determining the position and shape of a structure of the lens based on the lens model and the observed data;

c. the laser delivery system automatically directing the laser beam in the lens of the eye in a pattern of shots;

d. wherein the pattern of shots is based upon the determined position and shape of the structure of the lens;

e. the laser delivery system automatically focusing a shot of the shot pattern in the lens of the eye based upon the determination of step b.

7. The method of claim 6, comprising directing the laser beam in the lens of the eye in a predetermined shot pattern, the shot pattern comprising as series of shots that form a volumetric shaped removal, the volumetric shaped removal being positioned entirely within the lens and essentially following a shape of the lens.

8. The method of claim 6, comprising directing the laser beam in a shot pattern to form an annular ring shaped capsulorhexis.

9. A method for delivering a laser beam to a lens of an eye comprising:

a. determining a position of the lens of the eye with respect to a fixed reference in a laser beam delivery system; and

determining a shape and the position of an outer surface of the lens of the eye based upon modeling data and observation data, wherein the laser beam delivery system is configured to deliver a laser beam along an optical path from a laser to the lens of the eye;

wherein components are located along the optical path, the components comprising;

an x y scanner;

a z focus mechanism; and

the fixed reference;

b. the laser beam delivery system directing the laser beam to the lens of the eye along the optical path;

c. the laser beam delivery system automatically directing the laser beam in the lens of the eye in a predetermined shot pattern, the shot pattern comprising as series of shots that form a volumetric shape; and

,

d. the volumetric shape being positioned at a location entirely within the lens of the eye;

wherein the location within the lens of the eye is based upon the determined position and shape of the outer surface of the lens of the eye.

10. A method of directing a laser beam to the lens of the eye comprising:

a. providing observed lens data to a laser beam delivery system;

the laser beam delivery system comprising;

(i) optical path components defining an optical path;

(ii) wherein the optical path components comprise an x y scanner, a z focus, and a fixed reference; and

,

(iii) modeled lens data;

b. based upon the modeled lens data, the fixed reference, and the observed lens data the laser beam delivery system determining a shape and a position of the lens, wherein the observed data is obtained from a light source; and

,

c. the laser beam delivery system directing a laser beam to the lens of the eye in a laser beam pattern, based upon the determined shape and the determined position of the lens, wherein the laser beam is directed along the optical path.