	US 12,011,394 B2
	Devices and methods for laser surgery of an eye, especially for keratoplasty
Alexander Angelov Angelov, Sofia (BG); Yavor Petrov Angelov, Sofia (BG); Mark Bischoff, Jena (DE); and Robert Pomraenke, Jena (DE)
Assigned to Carl Zeiss Meditec AG, Jena (DE); and Resbiomed Technologies OOD, Sofia (BG)
Appl. No. 17/602,874
Filed by Carl Zeiss Meditec AG, Jena (DE); and RESBIOMED TECHNOLOGIES OOD, Sofia (BG)
PCT Filed Apr. 7, 2020, PCT No. PCT/EP2020/059869 § 371(c)(1), (2) Date Oct. 11, 2021, PCT Pub. No. WO2020/212199, PCT Pub. Date Oct. 22, 2020.
Claims priority of provisional application 62/833,869, filed on Apr. 15, 2019.
Claims priority of application No. 10 2020 204 261.6 (DE), filed on Apr. 1, 2020.
Prior Publication US 2022/0160547 A1, May 26, 2022
Int. Cl. A61F 9/008 (2006.01); A61F 2/14 (2006.01)

CPC A61F 9/00831 (2013.01) [A61F 2/142 (2013.01); A61F 9/00804 (2013.01); A61F 2009/00872 (2013.01); A61F 2009/00878 (2013.01); A61F 2009/00893 (2013.01)]

21 Claims

1. A planning unit for generating control data for a system for laser surgery of an eye, including for keratoplasty, comprising:

a first laser device and at least one characterization device;

wherein the first laser device is configured to generate at least one incision in a cornea and is controllable by the control data; and

wherein the planning unit comprises:

a first interface that supplies first measurement data on corneal parameters from the at least one characterization device;

a second interface that supplies second measurement data or model data of a lamella, insertable into a cornea after generation of the incision;

a third interface that transfers control data to the first laser device; and

a computing circuitry that determines the at least one incision in the cornea using the first measurement data and second measurement data or model data, wherein the computing circuitry generates a control data set configured to control the first laser device;

wherein the control data set facilitates generation of the at least one incision by the first laser device using the control data set;

wherein a first device coordinate system of the first laser device and a second device coordinate system of the at least one characterization device are coupled using registration and the supplied second measurement data or model data of the lamella can be unambiguously registered to the first device coordinate system and the second device coordinate system;

wherein the system for laser surgery further comprises a second laser device;

wherein the planning unit is further configured to generate control data for the second laser device of the system for laser surgery of an eye, wherein the second laser device processes a blank to create a patient-specific formed lamella that is to be implanted into the cornea; and

wherein the planning unit comprises a fourth interface for transferring control data to the second laser device;

wherein a third device coordinate system of the second laser device is also coupled using registration to the first device coordinate system of the first laser device and the second device coordinate system the characterization device.