RF-Powered Electrosurgical Illumination Without Cable Entanglement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical site illumination systems are inefficient, prone to entanglement, and require separate power sources, leading to overheating and obstructive lighting, which can cause patient burns and hinder surgical access.
Innovation Solution
An electrosurgical instrument with integrated illumination that harnesses RF power from a generator, using voltage reduction and rectification components to provide continuous lighting, independent of electrosurgical activity, with low-profile design and ergonomic cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fiber optic cables are used to deliver light from a light source to the surgical site, then illumination of the surgical site is achieved, but the cables and tubing can become entangled thereby inconveniencing the surgeon
Solution Approach 1:
The illumination element is integrated directly into the electrosurgical instrument, extracting the light source from separate fiber optic cables and tubing. This eliminates the entanglement problem by incorporating the illumination function within the instrument itself rather than using external cable-based delivery systems.
Solution Approach 2:
The illumination element is merged with the electrosurgical instrument to create an integrated system. The illumination element, power conversion means, and electrosurgical instrument are combined into a single unified device, eliminating the need for separate fiber optic cables and power sources.
2Illumination intensity
If fiber optic cables are used to deliver light, then illumination is provided, but light is lost as it travels from the light source toward the surgical site
Solution Approach 1:
The illumination element is positioned directly at the surgical site by integrating it into the electrosurgical instrument, extracting light delivery from cable-based transmission. This eliminates light loss during transmission through fiber optic cables by placing the light source at the point of use.
3Illumination intensity
If fiber optic cables deliver light to the surgical site, then illumination is achieved, but excessive heating of the illumination element or surgical instrument can result in patient burns or overheating and damage
Solution Approach 1:
The system converts the harmful RF energy that would otherwise be wasted into useful illumination power. The power conversion means rectifies and reduces RF voltage to power the illumination element, transforming potentially harmful electromagnetic energy into beneficial light while minimizing thermal damage through efficient power conversion.
Solution Approach 2:
The system changes the electrical parameters by rectifying RF voltage and reducing it to appropriate levels for the illumination element. This parameter transformation enables efficient power delivery to the illumination element while minimizing excessive heating and thermal damage risks.
4Duration of action of stationary object
If a separate power source is located in the handpiece or housing for the illumination element, then continuous illumination is achieved, but the device complexity and weight increase
Solution Approach 1:
The electrosurgical generator serves multiple functions: it provides both electrosurgical power and illumination power through the power conversion means. This multi-functionality eliminates the need for separate power sources while maintaining continuous illumination capability.
Solution Approach 2:
The system uses itself to power the illumination element by extracting power from the RF output of the electrosurgical generator. The generator provides power for both electrosurgery and illumination through integrated power conversion, making the system self-sufficient without external power sources.
5Ease of operation
If the illumination element is integrated into the electrosurgical instrument, then cable entanglement is reduced, but the illumination element may add weight to the surgical instrument
Solution Approach 1:
The illumination element is integrated into the electrosurgical instrument, extracting the need for external fiber optic cables. While this adds some weight to the instrument, it eliminates cable entanglement and improves ease of operation by consolidating functions within the instrument itself.
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 efficient, continuous illumination of the surgical site without additional power sources, reducing heat-related risks and maintaining clear access, while adapting to varying generator conditions.
Implementation Method 1
a voltage reduction means electrically coupled with the electrosurgical generator and configured to provide a reduced voltage different than the RF voltage
Implementation Method 2
an illumination element configured to be energized with the reduced voltage and produce light for illuminating the surgical site
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A surgical system that illuminates a surgical site using one or more illumination means is powered by radiofrequency energy produced by an electrosurgical generator. Illumination may occur whether or not current is being delivered from an active electrode to target tissue.