Split Jaw Electrosurgical Instrument for Simultaneous Cutting and Sealing
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Solution Overview
Problem
Current electrosurgical instruments lack a mechanism to simultaneously cut and seal tissue efficiently, often requiring separate steps for cutting and coagulation, which can be cumbersome and less effective.
Innovation Solution
An electrosurgical device with a handpiece, shaft, and end effector that includes a firing beam and jaws capable of articulation, allowing for simultaneous tissue cutting and sealing through bipolar RF energy application, with a mechanism that enables the jaws to close and seal tissue before cutting, ensuring effective hemostasis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If separate steps are used for cutting and coagulation, then each function can be performed with dedicated tools, but the procedural complexity increases and surgical efficiency decreases
Solution Approach 1:
The patent combines cutting and coagulation functions into a single electrosurgical instrument. The jaw assembly integrates both a cutting edge for tissue division and electrode surfaces for RF energy delivery, allowing simultaneous or sequential cutting and sealing in one operational step, thereby improving surgical efficiency and reducing procedural complexity
Solution Approach 2:
The electrosurgical instrument is designed with multi-functionality, where the same jaw assembly performs both cutting and coagulation tasks. The cutting element and electrode surfaces work together to provide tissue division and hemostatic sealing, making the device universal for multiple surgical functions and eliminating the need for separate cutting and coagulation tools
2Reliability
If RF energy is applied to seal tissue, then hemostasis is achieved, but the tissue cutting capability is compromised
Solution Approach 1:
The jaw assembly is segmented into distinct functional zones: a cutting edge for tissue division and separate electrode surfaces for RF energy delivery. This segmentation allows the cutting function and coagulation function to operate independently yet simultaneously, ensuring that RF energy application for sealing does not interfere with the cutting capability
Solution Approach 2:
The instrument enables preliminary cutting of tissue followed immediately by RF energy application for sealing in a continuous motion. The cutting edge severs the tissue first, and then the electrode surfaces apply RF energy to the freshly cut ends to achieve hemostasis, ensuring both cutting effectiveness and reliable hemostatic sealing
3Ease of operation
If the jaw structure is simplified for easier operation, then ease of use improves, but the ability to control energy delivery and cutting precision deteriorates
Solution Approach 1:
The jaw assembly incorporates dynamic elements including movable jaws with articulation capability and adjustable positioning mechanisms. This allows the jaws to adapt to different tissue types and surgical angles while maintaining precise alignment between the cutting edge and electrode surfaces, ensuring both ease of operation and cutting precision
Solution Approach 2:
The instrument integrates mechanical jaw closure with controlled RF energy delivery. The mechanical actuation of the jaws is coupled with electrical control systems that regulate RF energy application, replacing purely mechanical operation with a coordinated mechano-electrical system that enhances precision while maintaining ease of use
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 cutting and sealing of tissue in a single operation, reducing procedural complexity and improving hemostatic sealing, thereby enhancing surgical precision and efficiency.
Implementation Method 1
elements that transmit radio frequency (RF) energy to tissue (e.g., to coagulate or seal the tissue)
Implementation Method 2
bipolar RF energy application, with a mechanism that enables the jaws to close and seal tissue before cutting
Data Source
AI summary
An apparatus for operating on tissue includes an end effector having a first jaw and a second jaw that pivots relative to the first jaw from a closed position to an open position. The second jaw includes a first portion and a second portion that pivots relative to the first portion. The second portion is positioned adjacent to the first portion of the second jaw when the second jaw is in the closed position. The first and second portions of the second jaw pivot outwardly as the second jaw is pivoted from the closed position to the open position.