Modular Motor Surgical Instrument for Simultaneous Tissue Cutting and Sealing
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Solution Overview
Problem
Current electrosurgical instruments lack a mechanism to simultaneously cut and seal tissue efficiently, particularly in minimally invasive procedures, where precise control over tissue cutting and coagulation is crucial for hemostasis and tissue integrity.
Innovation Solution
The design of an electrosurgical instrument featuring a modular motor-driven end effector with articulation capabilities, incorporating a firing beam and jaws that apply bipolar RF energy for simultaneous tissue cutting and sealing, allowing for precise control and efficient tissue handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single electrosurgical instrument is used for both cutting and sealing tissue, then procedural efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent combines cutting and sealing functions into a single electrosurgical instrument. The instrument integrates a cutting element for tissue division and an RF energy delivery system for simultaneous or sequential tissue sealing, eliminating the need for separate instruments and improving procedural efficiency.
Solution Approach 2:
The electrosurgical instrument is designed with multi-functionality, capable of performing both cutting and sealing operations. The device includes a cutting element for mechanical division and an RF energy delivery mechanism for thermal sealing, allowing a single instrument to handle multiple tissue management tasks.
2Reliability
If RF energy is applied to seal tissue, then hemostasis is achieved, but tissue trauma increases
Solution Approach 1:
The RF energy delivery system is designed to concentrate energy delivery to specific localized areas of tissue. The electrode configuration and control mechanisms enable precise targeting of the sealing zone, limiting thermal effects to the immediate treatment area and reducing collateral tissue trauma.
Solution Approach 2:
The instrument enables continuous or controlled delivery of RF energy to maintain consistent sealing action. The system can deliver energy in a controlled manner to achieve reliable hemostasis while monitoring tissue response to prevent excessive thermal damage.
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 cutting and sealing of tissues with reduced tissue trauma and effective hemostasis, facilitating minimally invasive surgeries by integrating motor-driven mechanisms for enhanced control and efficiency.
Implementation Method 1
one or more elements that transmit radio frequency (RF) energy to tissue (e.g., to coagulate or seal the tissue)
Implementation Method 2
bipolar RF energy for simultaneous tissue cutting and sealing
Implementation Method 3
modular motor-driven end effector with articulation capabilities
Data Source
AI summary
An apparatus for operating on tissue comprises a handpiece, an elongate shaft, an end effector, a firing beam, and a modular motor. The end effector has a pair of jaws configured to open and close upon tissue. The firing beam comprises a blade insert with a sharp edge operable to sever tissue captured within the end effector. The modular motor is insertable into the handpiece. The modular motor comprises a drive gear that engages a plurality of components disposed within the handpiece. Rotation of the drive gear drives longitudinal translation of the firing beam within the elongate shaft. Longitudinal translation of the firing beam opens and closes the jaws of the end effector relative to tissue. Longitudinal translation of the firing beam also severs tissue captured between closed jaws of the end effector.