Electrosurgical Cobb Elevator With Integrated Suction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cobb elevator instruments require significant manual effort for tissue retraction and often fail to firmly grasp tissue, leading to slippage and increased surgeon fatigue, especially during electrosurgical procedures where vapors and smoke can obstruct the view.
Innovation Solution
An electrosurgical Cobb elevator instrument with a curved, cup-shaped active end made of electrically-conductive material, integrated suction conduit, and connection to an electrosurgical generator for RF current delivery, reducing manual effort and enhancing tissue dissection and hemostasis while efficiently removing smoke and vapors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual blunt dissection is used with a traditional Cobb elevator, then tissue can be displaced laterally, but considerable effort is required and the surgeon becomes tired
Solution Approach 1:
The patent replaces manual mechanical blunt dissection with electrosurgical energy. The Cobb elevator is equipped with an electrosurgical electrode that delivers RF current to tissue, enabling energy-based dissection instead of relying solely on manual mechanical force, thereby reducing surgeon fatigue while maintaining tissue displacement capability
2Reliability
If manual pressure is applied to grasp tissue with a Cobb elevator, then tissue retraction can be achieved, but the instrument may slip and the handle may slip in the surgeon's grasp
Solution Approach 1:
The patent replaces mechanical grasping and holding actions with electrosurgical adhesion. The electrosurgical electrode creates controlled adhesion between tissue and the instrument tip through RF energy, providing stable tissue retention without requiring continuous manual pressure, thereby eliminating slippage issues both at the tissue interface and in the surgeon's hand
3Productivity
If electrosurgical currents are used for tissue dissection, then surgical effort is reduced, but vapors and smoke plumes are produced that obstruct the view
Solution Approach 1:
The patent merges the electrosurgical dissection function with smoke evacuation by integrating a suction channel directly into the Cobb elevator instrument. This allows simultaneous tissue dissection via RF energy and immediate removal of generated smoke and vapors at the source, maintaining surgical field visibility while preserving the efficiency benefits of electrosurgery
Solution Approach 2:
The patent introduces a suction channel as an intermediary component that mediates between the electrosurgical electrode and the surgical field. This intermediary structure captures and removes smoke plumes generated during electrosurgical dissection, preventing visual obstruction while allowing the productive benefits of RF energy to be fully utilized
4Reliability
If a traditional Cobb elevator is used for tissue retraction, then the procedure can be performed, but the instrument fails to firmly grasp tissue leading to slippage
Solution Approach 1:
The patent applies multi-functionality by equipping the Cobb elevator with both its traditional mechanical dissection capability and added electrosurgical functions. The instrument can operate in mechanical mode for simple displacement or switch to electrosurgical mode for enhanced tissue adhesion and dissection, providing versatile tissue retention without requiring completely separate instruments
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
Significantly reduces surgical effort by using electrosurgical energy for tissue dissection and retraction, improves tissue grasping, and effectively clears smoke and vapors, enhancing procedural efficiency and visibility.
Implementation Method 1
capable of serving to elevate or retract tissue from bone during a medical procedure when RF electrosurgical currents are supplied to it
Implementation Method 2
integrated suction conduit, and connection to an electrosurgical generator for RF current delivery, reducing manual effort and enhancing tissue dissection and hemostasis while efficiently removing smoke and vapors
Data Source
Figure 1~2
Figure 3~7
AI summary
An electrosurgical Cobb elevator instrument, a soft tissue dissection and/or retraction tool, can be used with and without suction, and is capable of delivering monopolar or bipolar RF energy for cutting and coagulating soft tissue. The device is capable of footswitch or handswitch activation. The tool has a spoon-shaped edge that is preferably sharp to provide blunt dissection in addition to the energy-driven dissection. The instrument of the invention could be used in any procedure that requires soft tissue dissection and/or coagulation.