Modular Surgical Dissector End Effector for Multi-Function Switching
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Solution Overview
Problem
Current surgical instruments lack versatility and efficiency in performing various surgical tasks such as grasping, dissecting, and suturing due to limitations in end effector movement and power delivery, which can lead to increased procedural time and complexity.
Innovation Solution
A surgical instrument system with a modular design featuring a handle and shaft assemblies that include a rotary drive module with interchangeable end effectors, allowing for different types of end effector movements and functions, and integrated power sources and control systems for precise motor control and articulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If surgical instruments use fixed end effector designs, then manufacturing and operation are simpler, but versatility and adaptability for different surgical tasks are reduced
Solution Approach 1:
The surgical instrument incorporates a universal end effector system that can perform multiple surgical functions including grasping, dissecting, and suturing through a single integrated platform. The end effector is designed with interchangeable components and adjustable mechanisms that allow it to adapt to different surgical tasks, eliminating the need for multiple specialized instruments while maintaining operational simplicity through standardized interfaces and control systems.
Solution Approach 2:
The end effector is divided into modular segments that can be independently configured or replaced. This segmentation allows the surgical instrument to be customized for specific procedures by swapping out discrete components such as gripper fingers, cutting elements, or suture delivery mechanisms, thereby achieving versatility without requiring complete instrument replacement and managing complexity through modular assembly.
2Productivity
If surgical instruments perform multiple functions, then procedural time is reduced, but device complexity and difficulty of operation increase
Solution Approach 1:
The end effector incorporates dynamic adjustment mechanisms that allow real-time modification of its configuration and functionality during surgical procedures. Motors and actuators enable smooth transitions between different operational modes (grasping, cutting, suturing) with precise control, allowing the surgeon to adapt the instrument's behavior to procedural needs without manual reconfiguration, thereby reducing procedural time while maintaining ease of operation through automated or semi-automated control systems.
3Adaptability or versatility
If surgical instruments use interchangeable end effectors, then adaptability improves, but manufacturing precision and reliability challenges increase
Solution Approach 1:
The interchangeable end effector system employs a nested hierarchical structure where standardized interface components are integrated into progressively larger assemblies. Each end effector module contains built-in alignment features, keyed interfaces, and self-centering mechanisms that ensure precise mating with the main instrument body. This nested design with standardized connection protocols enables reliable interchangeability while maintaining manufacturing precision through repeatable assembly processes and quality-controlled interface specifications.
Data Source
AI summary
A surgical instrument comprising an end effector is disclosed. The end effector comprises a surgical dissector.