Infrared Denaturing Device with Elongated Light Emitter
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Solution Overview
Problem
Current infrared denaturing devices for surgical operations, such as atrial fibrillation treatment, face challenges with transmural coagulation depth control, carbonization denaturation, and inefficient surface coverage, particularly when used on a beating heart, due to limited radiation time and non-ideal light emitting surface shapes.
Innovation Solution
An infrared denaturing device with a light emitting surface of elongated shape, integrated with a reflecting surface and a denaturation detecting sensor, allowing for controlled depth and spread of coagulation, and featuring a temperature sensor for real-time feedback to prevent overheating, enabling precise and efficient coagulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If infrared radiation is applied with a conventional circular light emitting surface, then coagulation can be achieved, but the surface coverage is inefficient and requires multiple radiation times
Solution Approach 1:
The light emitting surface is changed from a conventional circular shape to an elongated shape (e.g., rectangular or oval), allowing a single radiation application to cover a larger linear distance on the myocardium, thereby reducing the number of radiation times needed and improving surgical efficiency
2Length of stationary object
If infrared radiation time is extended to achieve deeper coagulation, then transmural coagulation depth increases, but carbonization denaturation occurs on the surface
Solution Approach 1:
The infrared energy distribution is optimized to create different coagulation depths at different locations: the elongated light emitting surface provides moderate energy density for sufficient depth penetration without excessive surface heating, while the overall radiation pattern ensures uniform energy distribution across the treatment area, preventing localized carbonization
Solution Approach 2:
The radiation is applied in controlled periodic intervals rather than continuous exposure, allowing heat dissipation between pulses to prevent surface carbonization while accumulating sufficient thermal energy for deep transmural coagulation
3Manufacturing precision
If the light emitting surface is made smaller for precision, then coagulation precision improves, but the area to be treated requires multiple radiation applications
Solution Approach 1:
The light emitting surface adopts an elongated asymmetric shape that extends in the direction of surgical movement, providing both precision at the leading edge and extended coverage along the length, thereby treating larger areas in fewer applications while maintaining coagulation precision
4Reliability
If RF coagulation is used with sandwiching method, then coagulation can be achieved, but manipulation complexity increases and risk of perforation exists
Solution Approach 1:
The mechanical sandwiching method requiring two probes and complex manipulation is replaced with a single infrared radiation probe that achieves coagulation through non-contact or contactless energy delivery, simplifying the operational procedure and reducing the risk of tissue perforation
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 device achieves deep transmural coagulation without carbonization denaturation, allowing for efficient and precise treatment of myocardial tissue, even on a beating heart, with improved handling and coverage, enhancing surgical precision and reducing treatment time.
Implementation Method 1
at least one pair of a reflecting surface for reflecting and guiding infrared light from the infrared light source to the region being denatured
Implementation Method 2
a light emitting surface for emitting the infrared light reflected by the reflecting surface onto the region being denatured
Implementation Method 3
Coagulation/denaturation is histologically caused at an infrared wavelength
Implementation Method 4
the device is provided with a denaturation detecting sensor for detecting infrared denaturation of the region being denatured
Data Source
AI summary
The infrared denaturing device of the present invention is provided with: an infrared lamp which emits infrared light; a light guide which guides the infrared light; and a light projecting body which radiates the infrared light guided from the light guide onto an object to be denatured. The light projecting body is provided with: a reflecting surface which reflects the infrared light; and a radiating surface which radiates the infrared light reflected by the reflecting surface onto an object to be irradiated. Further, there is also provided a denaturing detection sensor which detects denaturing, by means of the infrared light, of a region being denatured.