Multi-Wavelength Photocoagulation Laser With Shared Aiming Path
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Solution Overview
Problem
Current devices lack the ability to easily switch between different laser wavelengths for photocoagulation surgery while maintaining a red aiming light in the same optical path, necessitating equipment changes during operations.
Innovation Solution
A multi-wavelength laser device with a positioning light source and multiple laser light sources, each projecting a specific wavelength, combined with lenses that allow light of varying wavelengths to be reflected or transmitted along a shared optical path, ensuring the red aiming light remains consistent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate laser devices are used for different wavelengths, then each laser can be optimized for its specific wavelength, but the device complexity increases and requires equipment changes during surgery
Solution Approach 1:
The patent combines multiple laser light sources with different wavelengths (532nm, 577nm, 670nm, and 810nm) into a single integrated device. Each laser source is coupled with its corresponding optical fiber, and all fibers are bundled together to deliver multiple wavelengths through a single projection system, eliminating the need for separate devices and equipment changes during surgery.
Solution Approach 2:
The patent creates a universal laser device that can perform multiple photocoagulation functions across different eyeball locations using a single apparatus. The device provides wavelength selection capability allowing physicians to switch between 532nm (anterior segment), 577nm (retina), 670nm (retina), and 810nm (retina) lasers without changing equipment, making the device adaptable to various surgical requirements.
2Adaptability or versatility
If equipment changes are made during surgery to target different eyeball portions, then the appropriate laser wavelength can be selected, but the operation time increases and convenience decreases
Solution Approach 1:
The patent prepares all necessary laser light sources and optical fibers in advance within a single device configuration. All four wavelength channels (532nm, 577nm, 670nm, 810nm) are pre-assembled and ready for immediate selection, eliminating the need for time-consuming equipment changes during surgery. The wavelength selection can be performed quickly through electronic control or switches.
3Measurement precision
If a single optical path is used for both positioning light and surgical laser, then the aiming accuracy is improved, but the optical path design becomes more complex
Solution Approach 1:
The patent uses optical fibers as intermediaries to guide both the positioning light (635nm) and surgical laser beams (532nm, 577nm, 670nm, 810nm) through the same optical path. The optical fiber acts as a mediator that can transmit multiple wavelengths simultaneously, allowing the positioning light and surgical laser to share the same delivery path without interfering with each other, while maintaining aiming accuracy.
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
Enables seamless switching between laser wavelengths during surgery, maintaining the red aiming light, thereby enhancing operational convenience and reducing equipment changes.
Implementation Method 1
The first lens disposed in a main optical path of the positioning visible light, and configured to receive the first laser light and reflect the first laser light along the first direction
Implementation Method 2
The second lens disposed in the main optical path, and configured to receive the second laser light and reflect the second laser light along the first direction
Implementation Method 3
The third lens disposed in the main optical path, and configured to receive the third laser light and reflect the third laser light along the first direction
Implementation Method 4
The fourth lens disposed in the main optical path, and configured to receive the fourth laser light and reflect the fourth laser light along the first direction
Data Source
AI summary
A laser device for photocoagulation surgery is disclosed, wherein the laser device includes a multi-wavelength laser source having a first direction and a second direction different from the first direction. The laser device includes a positioning light source, a first laser light source, a first lens, a second laser light source, a second lens, a third laser light source, a third lens, a fourth laser light source and a fourth lens. The positioning light source configured to project a positioning visible light along the first direction, wherein the positioning visible light has a specific wavelength being about 635 nm. The first laser light source configured to project a first laser light having a first wavelength along the second direction. The first lens disposed in a main optical path of the positioning visible light, and configured to receive the first laser light and reflect the first laser light along the first direction.