Surgical Stapler Anvil Seating Detection for Leak Prevention
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Solution Overview
Problem
Existing surgical staplers face challenges in ensuring precise anvil seating during end-to-end anastomosis procedures, which can lead to incomplete sealing or leakage at the anastomosis site.
Innovation Solution
A surgical stapler with an anvil seating detection mechanism that includes a rotary cam and rocker member system to ensure proper alignment and seating of the anvil before stapling, preventing incomplete sealing and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical staplers are used without anvil seating detection, then the device complexity is reduced, but the reliability of the stapling process deteriorates due to potential incomplete sealing or leakage
Solution Approach 1:
The patent implements a feedback mechanism through the anvil seating detection system that monitors whether the anvil is properly positioned before allowing the stapling operation to proceed. The detection mechanism provides real-time information about anvil seating status, and the system responds by preventing or enabling the stapling action accordingly, thereby ensuring reliable sealing without requiring overly complex device architecture
Solution Approach 2:
The patent applies preliminary action by detecting and confirming proper anvil seating before the actual stapling operation commences. The detection mechanism verifies correct positioning in advance, and only after successful verification does the system proceed with the stapling action, preventing potential failures from mispositioning while maintaining a relatively simple overall device structure
2Manufacturing precision
If anvil seating detection mechanism is added, then the manufacturing precision of anvil positioning is improved, but the device complexity increases due to additional detection components
Solution Approach 1:
The detection mechanism provides feedback on anvil positioning accuracy, allowing the system to verify that the anvil is correctly positioned relative to the stapling head assembly. This feedback loop ensures high positioning precision without requiring overly complex mechanical adjustment mechanisms, as the system can detect and respond to positioning status
Solution Approach 2:
The anvil seating detection system enables the device to self-verify proper positioning through integrated sensors and detection mechanisms that automatically assess anvil placement. This self-service capability achieves high positioning precision without requiring external verification tools or complex manual adjustment procedures, maintaining a balance between precision and device complexity
3Object-affected harmful factors
If anvil seating detection is implemented, then the risk of leakage at anastomosis site is reduced, but the ease of operation deteriorates due to additional detection steps
Solution Approach 1:
The detection mechanism performs preliminary verification of anvil seating before the stapling operation, ensuring that proper positioning is confirmed in advance. This preliminary check prevents leakage by catching positioning errors before they result in failed sealing, while the automated nature of the detection minimizes additional manual steps required from the operator
Solution Approach 2:
The system provides immediate feedback on anvil seating status, allowing operators to quickly understand whether proper positioning has been achieved. This feedback mechanism reduces leakage risk by enabling timely correction of positioning issues, while the straightforward feedback interface maintains ease of operation by avoiding complex procedural steps
Data Source
AI summary
A surgical circular stapler has a handle assembly, a shaft, a stapling assembly, and a firing assembly. The shaft extends distally from the handle assembly. The stapling assembly is secured to a distal end of the shaft. Longitudinal translation of the firing assembly causes the stapling assembly to drive a plurality of staples in a circular array to secure two lumens of tissue together. The stapling assembly may further drive a blade to sever any excess tissue interior of the circular array of staples. The stapler further includes a lockout assembly configured to control firing of the stapling assembly. The lockout assembly may include one or more switches, the actuation of which is configured to prevent or permit firing of the stapling assembly. The lockout assembly may additionally or alternatively include one or more mechanical lockout features configured to control firing of the stapling assembly.