Segmented RF Electrode Tissue Sealing Precision
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Solution Overview
Problem
Current surgical stapling and cutting instruments face challenges in efficiently stapling and cutting tissue due to limitations in staple cartridge design and firing mechanism, leading to inconsistent tissue handling and potential for tissue damage.
Innovation Solution
The development of a surgical instrument with an improved staple cartridge and end effector system that incorporates a segmented RF electrode configuration and a piezoelectric or electroactive polymer actuator for precise tissue manipulation, enabling controlled stapling and cutting with enhanced tissue sealing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional staple cartridge design is used, then the structure is simple, but tissue handling consistency and sealing precision deteriorate
Solution Approach 1:
The RF electrode is divided into multiple segmented elements that can be independently controlled. This segmentation allows for precise localization of RF energy application to specific tissue regions, enabling consistent tissue sealing and handling while maintaining a modular cartridge structure that doesn't excessively increase overall complexity.
Solution Approach 2:
Different segments of the RF electrode can be activated independently to provide localized tissue sealing and heating. This local quality control ensures that each region of tissue receives appropriate energy application, improving sealing precision without requiring complete redesign of the entire cartridge system.
2Measurement precision
If a piezoelectric or electroactive polymer actuator is incorporated, then tissue manipulation precision improves, but device complexity increases
Solution Approach 1:
Traditional mechanical actuators are replaced with piezoelectric or electroactive polymer actuators that convert electrical energy directly to mechanical motion. This substitution enables more precise control of jaw movement and tissue manipulation through electrical signals, improving measurement and positioning precision while integrating smoothly into the existing cartridge architecture.
3Reliability
If safety features are added to prevent short circuits, then operational reliability improves, but device complexity increases
Solution Approach 1:
The control system incorporates feedback mechanisms that monitor the electrical state of the RF electrode segments and tissue contact conditions. This feedback enables real-time detection of potential short circuit conditions and automatic adjustment of energy delivery, improving operational reliability through intelligent control rather than adding complex physical safety barriers.
Solution Approach 2:
The system includes self-diagnostic and self-protective features that automatically detect and respond to unsafe conditions without external intervention. The control system monitors its own operation and can disable problematic electrode segments or reduce power output when short circuit risks are detected, ensuring reliability through self-regulation.
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
This solution provides improved tissue handling and sealing, reducing tissue damage and enhancing the precision and efficiency of stapling and cutting processes, while also incorporating safety features to prevent short circuits and ensure reliable operation.
Implementation Method 1
incorporates a segmented RF electrode configuration and a piezoelectric or electroactive polymer actuator for precise tissue manipulation
Implementation Method 2
incorporates a segmented RF electrode configuration and a piezoelectric or electroactive polymer actuator for precise tissue manipulation
Implementation Method 3
segmented RF electrode configuration... enhanced tissue sealing capabilities
Data Source
AI summary
A surgical instrument assembly is disclosed. The surgical instrument assembly comprises a shaft, an end effector, and a drive member configured to actuate a function of the end effector. The surgical instrument assembly further comprises an articulation member configured to be actuated to articulate the end effector and an articulation region, wherein the articulation member is configured to articulate the end effector relative to the shaft by way of the articulation region, wherein the drive member extends through the shaft, the articulation region, and the end effector. The articulation region comprises an articulation support pivot positioned within the articulation region, wherein the articulation member is coupled to the articulation support pivot, wherein the articulation member is actuatable to rotate the articulation support pivot, and wherein the drive member extends through the articulation support pivot.