Rotation Adapter Receiver for Smaller MIS Crimping Access
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Solution Overview
Problem
Current minimally invasive surgical crimping instruments have limitations in reducing size while maintaining compatibility and reliability, especially for use in smaller MIS access points, and lack enhanced tissue protection features.
Innovation Solution
A rotation adapter and receiver system with a proximal and distal journal, rotation index, actuator input, and effector output, along with an expanded receiving face and rotatable shaft, enable a smaller crimping instrument with enhanced tissue protection and ergonomic flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the crimping instrument size is reduced for smaller MIS access points, then patient safety and tissue protection are improved, but device complexity increases
Solution Approach 1:
The device is divided into modular components including a rotation adapter with proximal and distal journals, a rotation adapter receiver with opposing beams, and a rotatable shaft assembly. This segmentation allows each component to be optimized independently for tissue protection while managing overall device complexity through standardized interfaces and functions.
2Length of moving object
If the crimping instrument diameter is reduced by 12%, then access through smaller MIS points is improved, but manufacturing precision requirements increase
Solution Approach 1:
The rotation adapter is nested within the rotation adapter receiver, with the proximal journal receiving the distal journal in a telescoping arrangement. This nesting allows compact packaging of multiple functional components within the reduced 12% diameter envelope while maintaining precise relative positioning through interference fits and keyed connections.
3Ease of operation
If the crimping instrument size is reduced, then ergonomic flexibility is improved, but reliability may worsen
Solution Approach 1:
The rotation adapter enables dynamic rotational movement of the shaft assembly relative to the handle through the journal-bearing interface. This dynamic capability provides ergonomic flexibility for positioning the end effector at various angles while maintaining reliability through controlled movement paths and mechanical stops that prevent excessive rotation.
Data Source
AI summary
A rotation adapter for a minimally invasive surgical apparatus is disclosed. The rotation adapter has a proximal journal and a distal journal. The rotation adapter also has a rotation index coupled between the proximal and distal journals. The rotation adapter further has an actuator input and an effector output. A rotation adapter receiver for a minimally invasive surgical apparatus is also disclosed. The rotation adapter receiver has opposing beams and a proximal bushing coupled between the opposing beams. The rotation adapter receiver also has a distal bushing coupled between the opposing beams. The rotation adapter receiver further has a rotation constraint coupled between the opposing beams and positioned between the proximal and distal bushings.