Multi-Beam Laser Handpiece Layout for Deeper Tissue Ablation
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Solution Overview
Problem
Existing laser treatment systems are limited in their ability to simultaneously utilize multiple laser types and wavelengths for enhanced therapeutic effects such as wound debridement, bacteria reduction, biostimulation, tissue ablation, and biofilm disruption in a single procedure.
Innovation Solution
A treatment device and method utilizing a handpiece that delivers multiple laser beams concurrently, with one or more laser beams applied at a high power level in a small spot surrounded by another laser beam at a low power level, synergistically enhancing treatment efficacy through combined emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single laser type and wavelength is used for tissue treatment, then the device complexity is low, but the therapeutic effect is limited
Solution Approach 1:
The patent combines multiple laser sources with different wavelengths (e.g., 1064 nm and 532 nm) into a single treatment device, allowing simultaneous delivery of multiple laser beams to the same tissue target. This merging approach enables enhanced therapeutic effects through combined photothermal and photomechanical actions while maintaining a unified device structure that manages the complexity of multiple laser systems
2Manufacturing precision
If multiple laser beams are applied simultaneously, then the ablation depth increases, but the charring of tissue increases
Solution Approach 1:
The patent applies different laser wavelengths to different spatial zones or depths within the tissue. For example, the 1064 nm laser penetrates deeper with less absorption, while the 532 nm laser acts more superficially. This spatial differentiation of laser application allows deep ablation without excessive surface charring, as each wavelength interacts with tissue at its optimal absorption depth
Solution Approach 2:
The patent employs pulsed laser delivery with carefully controlled pulse durations and repetition rates. By using periodic pulsed action rather than continuous wave delivery, the system allows thermal diffusion between pulses, preventing excessive heat accumulation that would cause charring while maintaining effective ablation depth through repeated cyclic heating cycles
3Productivity
If high power laser beams are used, then the ablation efficiency increases, but the risk of thermal damage to surrounding tissue increases
Solution Approach 1:
The patent utilizes the different absorption characteristics and penetration depths of multiple laser wavelengths to optimize the balance between ablation efficiency and thermal damage. The 1064 nm laser provides deep penetration with lower absorption for controlled ablation, while the 532 nm laser offers higher absorption for more efficient surface ablation. By adjusting power levels, pulse durations, and wavelength selection based on tissue type and treatment depth requirements, the system achieves high ablation efficiency while minimizing thermal damage to surrounding tissues
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
The simultaneous application of multiple laser beams achieves improved wound healing, bacteria reduction, and tissue ablation with reduced charring and increased ablation depth, while providing bactericidal and bio-stimulation benefits.
Implementation Method 1
Depending on the particular wavelength, output power, pulse width of the laser emission, and the absorptivity of the target tissue, varying biological materials from soft tissue such as muscles and skin, to hard tissue such as teeth and bones, can be cut and ablated
Implementation Method 2
A treatment device and method utilizing a handpiece that delivers multiple laser beams concurrently, with one or more laser beams applied at a high power level in a small spot surrounded by another laser beam at a low power level, synergistically enhancing treatment efficacy through combined emissions
Data Source
AI summary
Embodiments of the invention include a treatment device and corresponding treatment method for laser wound healing, the device and method making use of the simultaneous action of multiple laser types and laser wavelengths which are applied at human tissue. The treatment device generally includes a laser system and a hand-piece which is coupled to the laser system. The hand-piece is designed so that one or multiple laser beams are applied at relatively small spot and at a relatively high power level, and are surrounded by a relatively large spot of another laser beam with a relatively low power level. In a preferred implementation, the hand-piece is adapted to facilitate the emission of first and second laser beams together with a third laser beam which is delivered at a different spatial profile in comparison to the first and second laser beams.