Lighted Electrocautery Blade Assembly for Shadow-Free Surgical Illumination
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Solution Overview
Problem
Existing surgical lighting devices, such as those integrated into handheld electrosurgical instruments or worn as headlamps, are bulky, require constant repositioning, pose safety hazards, and obstruct the surgical field, leading to shadows and user fatigue.
Innovation Solution
A lighted electrocautery blade assembly for handheld electrosurgical instruments, featuring an LED light source powered by internal or external batteries and a separate RF energy source, providing shadow-free illumination with a detachable electrode and adjustable attachment to various electrosurgical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an integral light source is integrated into the handheld electrosurgical instrument, then illumination of the surgical site is provided, but the device becomes bulky and expensive
Solution Approach 1:
The lighting function is segmented from the main electrosurgical instrument body and integrated into a separate, removable blade assembly. This allows the light source to be provided while keeping the main instrument compact and manageable.
Solution Approach 2:
The light source is merged with the blade assembly rather than the main instrument body. This combination provides illumination at the point of use while maintaining the overall instrument's manageable size and reducing cost.
2Use of energy by moving object
If corded lighting devices are used, then power supply is ensured, but the devices become hot and pose safety hazards
Solution Approach 1:
The blade assembly with integrated light source is designed as a disposable component. The battery is sealed inside and non-removable, ensuring the entire assembly can be discarded after use, eliminating the need for recharging and reducing fire hazards associated with repeated charging cycles.
Solution Approach 2:
The battery is extracted from being a separate, removable component and is instead sealed inside the blade assembly housing. This extraction of the battery from the user's direct control eliminates the hazard of hot, rechargeable batteries while ensuring continuous power supply.
3Illumination intensity
If overhead lights or headlamps are used, then illumination is provided, but the surgeon's hands or tools cast shadows on the surgical site
Solution Approach 1:
The blade assembly with integrated light source acts as an intermediary between the surgeon and the surgical site. The light is provided from the blade itself, illuminating the tissue immediately at the point of contact and eliminating shadows cast by the surgeon's hands or external lighting equipment.
Solution Approach 2:
The lighting is moved from an external, overhead position to an integrated position at the distal end of the blade. This dimensional change places the light source in three-dimensional proximity to the surgical site, eliminating shadowing issues that occur with top-down illumination.
4Adaptability or versatility
If the blade assembly is designed for releasable attachment, then adaptability to different instruments is improved, but device complexity increases
Solution Approach 1:
The blade assembly is designed with a universal attachment mechanism that can be coupled to various electrosurgical instruments. The housing includes features that enable attachment to different instrument types, making the lighting solution adaptable across multiple platforms without requiring instrument-specific designs.
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 precise, shadow-free illumination of the surgical site without obstructing the surgeon's view, reducing fatigue, and allowing for easy reconfiguration to different surgical tools, while minimizing safety risks.
Implementation Method 1
an LED light assembly at a distal end of the housing for illuminating a surgical site
Implementation Method 2
an electrode that extends through and is mounted within the elongated housing such that a distal end portion of the electrode extends from the distal end of the elongated housing to define an electrocautery blade
Data Source
AI summary
A lighted electrocautery blade assembly is disclosed for attachment to a handheld electrosurgical instrument, which includes a housing having an LED light assembly at a distal end thereof for illuminating a surgical site, and an electrode operatively associated with the housing and including a distal portion defining an electrocautery blade and a proximal portion defining a connector for electrically coupling with an electrosurgical instrument.