InfoGuides: Finding Patents: Google Patent Example

Laser Surgery for Cataracts

I searched using laser surgery cataracts. This is just a simple search. It won't find a lot of the related patents. I limited it to the US patent office using the filter.

Patent applications

There are several applications. You can find out the status by selecting the title. US patent application numbers begin with a year. Here is an applications that was in the list in 2024:

Combined Laser and Phacoemulsification System for Eye Surgery, US20220047421 A1
Christopher Horvath • Lensar, Inc.
Priority 2011-06-09 • Filed 2021-03-08 • Published 2022-02-17
Cataract surgery is in recent years more and more augmented and supported by the application of laser cuts in the eye tissue. Such laser systems are separate units from the phacoemulsification system units that are usually used for cataract extraction…

Granted patents

US patents that are granted don't have a year in the number. The number is followed with B1, B2, etc.

Ophthalmologic laser device and method for preventing and treating …, US 10478342 B2
Manfred, Dick • Carl Zeiss Meditec Ag
Priority 2011-07-29 • Filed 2012-07-26 • Granted 2019-11-19 • Published 2019-11-19
An ophthalmologic laser device includes a pulsed laser configured to produce radiation focused along at treatment beam path. A variably adjustable beam deflector unit and a focusing lens system are disposed in the treatment beam path…

Patent Front Page

United States Patent
Dick et al.

(10) Patent No.:

US 10,478,342 B2

(45) Date of Patent:

Nov. 19 , 2019

(54)

OPHTHALMOLOGIC LASER DEVICE AND METHOD FOR PREVENTING AND TREATING AFTERCATARACT

(75) Inventors:

Manfred Dick, Gefell (DE); Juergen Kuehnert, Jena (DE); Matthias Reich, Jena (DE)

(73) Assignee:

CARL ZEISS MEDITEC AG, Jena (DE)

(*) Notice:

Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154 (b) by 373 days .

(21) Appl. No.:

14/235,810

(22) PCT Filed:

Jul. 26, 2012

(86) PCT No.:

PCT/EP2012/064650

§ 371 (c)(1),
(2), (4) Date:

Jan. 29 , 2014

(87) PCT Pub. No.:

WO2013/017513

PCT Pub. Date.:

Feb. 7 , 2013

(65)

Prior Publication Data

US 2014/0194860 A1

Jul. 10, 2014

(30)

Foreign Application Priority Data

Jul. 29, 2011 (DE)

10 2011 109 058

(51)

Int. Cl.
A61F 9/008 (2006.01)

(52)

U.S. Cl.
CPC A61F 9/0084 (2013.01) ; A61F 9/00825 (2013.01) ; A61F 2009/0087 (2013.01) ;
(Continued)

(58)

Field of Classification Search
CPC .... A61F 2009/0087; A61F 2009/00889 ; A61F 2009/00887 ; A61F 2009/00851;
(Continued)

(56)

References Cited

U.S. PATENT DOCUMENTS

5,733,276 A

3/1998 Belkin

6,623,477 B1

9/2003 Elbrecht et al.
(Continued)

FOREIGN PATENT DOCUMENTS

01996MU2006 A

12/2006

WO 0027325 Al

5/2000
(Continued)

OTHER PUBLICATIONS

Wolfram Wehner, et al., “ Prevention of lens capsule opacification with ARC neodymium, YAG laser photolysis afterphaceomulsification”, Dec. 2010, Elsevier, USA.

Primary Examiner—Carl H Layno
Assistant Examiner—Dacheng Xie

(74) Attorney, Agent, or Firm — Leydig, Voit & Mayer, Ltd.

(57)

ABSTRACT

An ophthalmologic laser device includes a pulsed laser configured to produce radiation focused along at treatment beam path . A variably adjustable beam deflector unit and a focusing lens system are disposed in the treatment beam path . The deflector unit is configured to focus the radiation in different target volumes.Measuring equipment is config ured to determine a shape and position of optical interfaces along a detection beam path . A control unit is configured to control the laser and the deflector unit and to implement steps including determining a shape and position of an interface of a membrane of a capsular bag of an eye located in a treatment area using the measuring equipment, deter mining coordinates of a target volume such that , on irradia tion of the target volume, a pressure wave runs from the target volume to the anterior or posterior membrane , and adjusting the deflector unit to the target determined volume.

8 Claims, 11 Drawing Sheets

There are numbers associated with each field. It is clear that

(54) is the title of the patent
(75) is the inventors
(73) is the assignee (owner of the patent)
(10) is the patent number
(45) is the patent grant date
(52) is the CPC classification numbers, which we will talk about next

Looking at the Cooperative Patent Classification.

The first three CPC codes in our example are:

A61F 9/0084
A61F 9/00825
A61F 2009/0087

We could search the broader code, A61F 9/008, and it would search all the narrower codes, as well as the broader one. However, I want to be more specific to get a smaller number of patents. I will search cpc:A61F9/0084 cpc:A61F9/00825 cpc:A61F2009/0087 to see if other patents use these three codes too.

Try the search, cpc:A61F9/0084 cpc:A61F9/00825 cpc:A61F2009/0087, in Google Patent.

In general, these results are more relevant to my topic.