Head-Mounted LED Surgical Lighting System
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Solution Overview
Problem
Conventional shadowless lamps used in surgical settings are large, heavy, and require ceiling reinforcement, generate heat, consume high power, and necessitate additional labor and maintenance, while also posing infection risks due to dust fall and difficulty in adjusting light direction as desired by the surgeon.
Innovation Solution
A portable lighting system where a light emitting unit is secured to the head of a healthcare worker, using LEDs with adjustable color and intensity, and optionally including infrared for thermography, allowing for flexible illumination without the need for a large-scale lighting system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a shadowless lamp with many lamps is attached to the ceiling through a movable mechanism, then the surgical field can be illuminated, but the ceiling needs to be reinforced and the system becomes large-scale and heavy
Solution Approach 1:
The patent replaces the mechanical ceiling-mounted shadowless lamp system with a head-mounted lighting device that uses LED light sources. This substitution eliminates the need for ceiling reinforcement while providing adequate illumination for surgical procedures.
Solution Approach 2:
The patent changes the illumination parameters by using high-intensity LED lights with specific luminous flux values (e.g., 1000-2000 lumens per LED module) to compensate for the reduced scale of the lighting system, ensuring sufficient surgical field illumination without requiring a large-scale ceiling-mounted apparatus.
2Illumination intensity
If many lamps are used in the shadowless lamp, then the surgical field is well illuminated, but heat generation increases and cooling costs rise
Solution Approach 1:
The patent substitutes traditional incandescent or halogen lamps with LED lighting technology, which generates significantly less heat while providing equivalent or superior illumination. This reduces the thermal load in the operating room and decreases cooling requirements.
Solution Approach 2:
The patent changes the light source parameter from high-heat traditional lamps to low-heat LED lights, maintaining adequate illuminance levels (e.g., 10,000-20,000 lux at the surgical site) while dramatically reducing heat generation and associated cooling costs.
3Illumination intensity
If many lamps are lighted in the shadowless lamp, then the surgical field is brightly illuminated, but power consumption increases
Solution Approach 1:
The patent replaces energy-intensive traditional lighting systems with LED-based illumination, which consumes significantly less power while delivering equivalent or improved brightness levels for surgical procedures.
Solution Approach 2:
The patent changes the energy efficiency parameter by using LED technology with lower power consumption (e.g., 10-20 watts per LED module) to achieve the same illuminance output, thereby reducing overall power consumption while maintaining surgical field brightness.
4Ease of operation
If the lamp unit is attached to the ceiling and moved to adjust location, then the lighting position can be changed, but dust and bacteria may fall from the movable mechanism
Solution Approach 1:
The patent replaces the ceiling-mounted movable lighting system with a head-mounted device that moves with the surgeon, eliminating the movable mechanism that generates dust and contamination risk.
Solution Approach 2:
The lighting device is integrated with the surgeon's head, making the surgeon themselves the carrier and positioner of the light source, thereby eliminating the need for separate movable mounting mechanisms that can shed dust and contaminants.
5Ease of operation
If an assistant adjusts the location of the lamp unit based on doctor's instructions, then the lighting position can be changed, but labor cost increases and communication errors may occur
Solution Approach 1:
The lighting device is head-mounted on the surgeon, enabling self-adjustment of lighting position through natural head movements, thereby eliminating the need for assistant intervention and reducing labor costs.
Solution Approach 2:
Instead of having the lighting system follow the surgeon's position (requiring assistant adjustment), the surgeon carries the lighting system on their head, inverting the traditional relationship and enabling automatic positioning without additional personnel.
6Illumination intensity
If a large-scale shadowless lamp is introduced, then the surgical field can be illuminated, but the introduction cost is high
Solution Approach 1:
The patent replaces expensive ceiling-mounted shadowless lamp systems with more economical head-mounted LED lighting devices, significantly reducing the introduction cost while maintaining adequate surgical illumination.
Solution Approach 2:
The patent changes the scale and complexity parameters of the lighting system, using multiple smaller LED modules (each with controlled luminous flux) instead of a single large-scale lamp system, thereby reducing overall cost while achieving required illuminance levels.
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 solution reduces costs, minimizes infection risks, allows for precise light direction adjustment, and provides reliable illumination close to the surgical site, reducing strain on the surgeon and improving surgical safety.
Implementation Method 1
a light emitting unit (4)
Implementation Method 2
a red light emitting diode
Data Source
AI summary
The lighting system 1 includes a light emitting unit 4 including light emitting diodes, and a securing member 5 for securing the light emitting unit 4 to a head of a healthcare worker. The radiation of light from the light emitting unit 4 eliminates the need for a shadowless lamp. When the light emitting unit 4 is fixed to the head, the light emitting unit 4 moves with the movement of the healthcare worker, and furthermore, when the healthcare worker moves his or her head, the direction of light radiation can be changed as desired. The use of an auxiliary lighting unit 6 and a camera 22 can provide safe surgery.