Laser Eye Treatment Controller Using Virtual Model Remapping

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Solution Overview

Problem

Current laser-assisted eye treatment systems face challenges in ensuring secure and optimal eye treatment planning, particularly due to the complexity of interactions between anatomical structures and treatment patterns, which can lead to non-optimal results and increased risk during the critical phase of the procedure.

Innovation Solution

A computer program product and system controller that plan laser-assisted eye treatments based on the anatomy of the patient's eye, using a virtual model for initial planning and remapping to real anatomical structures during treatment, thereby minimizing errors and shortening the critical phase by allowing pre-treatment planning and real-time adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual planning and definition of treatment patterns is performed during the critical phase, then the treatment can be adapted to real anatomy, but the critical phase becomes prolonged and error risk increases

Engineering Contradiction:
Improveadaptability to real anatomyVSAvoidduration of critical phase
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system performs preliminary automated planning of treatment patterns based on ideal anatomical models before the critical phase begins. This pre-planning includes defining incision patterns, capsulotomy shapes, and other treatment parameters in advance, so that during the critical phase only verification and minor adjustments are needed, significantly reducing the time the eye must remain docked.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system creates a virtual model eye that copies and represents the patient's real eye anatomy. This virtual model allows treatment planning to be performed on a digital replica, enabling pre-calculation of treatment patterns that can be directly transferred to the real eye, eliminating the need for time-consuming manual planning during the critical phase.

Inventive Principle:
Principle #26Copying

2Measurement precision

If the suction mechanism is applied for an extended period to ensure stable eye positioning, then imaging and treatment accuracy improve, but damage to scleral vessels and intraocular pressure spikes occur

Engineering Contradiction:
Improveimaging and treatment accuracyVSAvoiddamage to scleral vessels and intraocular pressure
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The system performs comprehensive eye imaging and anatomical characterization before docking to determine the treatment plan. By pre-acquiring necessary imaging data and pre-calculating treatment parameters, the system minimizes the duration of suction application, reducing the risk of vascular damage and intraocular pressure complications while maintaining treatment accuracy.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system rapidly completes the docking phase by using pre-calculated treatment patterns that require minimal verification time. The automated planning and remapping processes enable the critical docking phase to be completed quickly, reducing the time the suction mechanism must be applied while still ensuring accurate treatment delivery.

Inventive Principle:
Principle #21Skipping (Rushing through)

3Reliability

If automated treatment pattern planning is performed, then the critical phase is shortened and safety improves, but flexibility in adapting to individual anatomical variations may be reduced

Engineering Contradiction:
Improvesafety and consistencyVSAvoidflexibility in adapting to anatomy
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system incorporates feedback mechanisms where the automated planning results are reviewed and verified against the patient's actual anatomy. The remapping process compares the virtual model with real anatomical structures and automatically adjusts treatment patterns to account for individual variations, ensuring both safety through automation and adaptability to specific anatomical conditions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system automatically adjusts treatment pattern parameters based on the patient's specific anatomical measurements and characteristics. By dynamically modifying parameters such as incision depth, capsulotomy diameter, and laser energy settings according to individual anatomical data, the system maintains high adaptability while preserving the safety benefits of automated planning.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach enhances the safety and efficiency of eye treatments by ensuring that planning is anatomically accurate, reducing the risk of errors and shortening the critical phase of the procedure, allowing for precise and optimal execution of laser treatments.

Implementation Method 1

A laser beam which is used for therapy may 'cut' tissue of a patient's eye or another material in a patient's eye by photo disruption

Methodology Applied
Scientific EffectPhoto disruption: Photodissociation

Implementation Method 2

remove tissue by ablation

Methodology Applied
Scientific EffectAblation: Ablation

Implementation Method 3

modify tissue by heat effects

Methodology Applied
Scientific EffectHeat effects: Heating

Implementation Method 4

it immobilizes the patient's eye, usually using some kind of suction mechanism

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS11278451B2Systems and methods for a laser assisted eye treatment
Publication Date: 2022.03.22 CARL ZEISS MEDITEC AG
  • US11278451B2 patent drawing
  • US11278451B2 patent drawing
  • US11278451B2 patent drawing

AI summary

A computer program product for controlling a laser-assisted eye treatment, configured to encode a system controller with a routine for planning the eye treatment, invention further relates to a laser-assisted eye treatment system including a laser treatment unit and a system controller, to a method for generating control data for a laser-assisted eye treatment system, to a planning method for a laser-assisted eye treatment and to an eye treatment method using a laser beam for treating a patient's eye. The invention provides systems and methods for a fast laser-assisted eye treatment of a patient's eye which improve the security and minimize the risk of a non-optimal eye treatment and enable sale eye treatment planning and a shortening of the critical phase of the eye treatment. Encoding a system controller by a routine for planning the eye treatment is strictly based on an anatomy of a patient's eye.