Catheter Clamping Device with Non-Circular Visual Locking
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Solution Overview
Problem
Existing catheter assemblies face challenges in maintaining the distal end portion at a selected site during procedures due to unwieldy or difficult-to-actuate devices that prevent movement, necessitating improved clamping and locking solutions.
Innovation Solution
A clamping device with a first and second member, each having non-circular cross-sectional profiles, allowing rotation between a release and clamped state to secure the catheter shaft, featuring an elastomeric member for frictional engagement and indicator surfaces for easy state identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing clamping devices are used to prevent catheter movement, then catheter stability is improved, but device complexity and difficulty of operation increase
Solution Approach 1:
The clamping device is divided into two separable members: a first member with a non-circular inner bore and a second member with a non-circular outer surface. These segmented components can be independently manipulated and assembled, simplifying the actuation process while maintaining stable catheter fixation when engaged.
Solution Approach 2:
The second member is received within the first member, with the non-circular outer surface of the second member fitting into the non-circular inner bore of the first member. This nested configuration allows the clamping device to maintain a compact form while providing secure, rotation-resistant fixation of the catheter.
2Stability of the object's composition
If non-circular cross-sectional profiles are used for clamping members, then rotational stability is improved, but manufacturing complexity increases
Solution Approach 1:
The first and second members feature non-circular, asymmetric cross-sectional profiles with corresponding shapes. This asymmetry prevents rotational movement of the clamped catheter while the profiles are designed to be manufacturable using standard forming processes, balancing rotational stability with ease of manufacture.
3Ease of operation
If indicator surfaces are added to show clamped state, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The first and second members include indicator surfaces that display different visual appearances based on their relative rotational positions. When the clamping device is properly engaged, the indicator surfaces align to provide a clear visual confirmation of the clamped state, eliminating the need for additional complex indicator mechanisms.
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
The device effectively secures the catheter in place, preventing movement relative to other medical devices, enhancing procedural stability and ease of use.
Implementation Method 1
an elastomeric member for frictional engagement
Data Source
AI summary
A clamping device for a catheter shaft can include a first member having a first indicator surface and defining a first inner bore having a non-circular cross-sectional profile, and a second member having a second indicator surface, and an extending annular element defining a second inner bore, the annular element received within the first inner bore and comprising an outer surface having a non-circular cross-sectional profile. The clamping device can be movable between a release state in which the second inner bore has a first diameter, and a clamped state in which the second inner bore has a second diameter less than the first diameter.