Catheter Blocking System with Rotatable Shell and Axial Actuator
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Solution Overview
Problem
Existing catheter blocking systems for locoregional anesthesia are difficult to ergonomically secure, prone to losing components, and lack assurance of proper catheter placement, leading to potential mechanical issues and ergonomic challenges during use.
Innovation Solution
A releasable blocking system comprising a base with a rotatable shell and an actuator that applies axial force to a deformable sleeve to securely hold the catheter, featuring a transparent viewing chamber for verification and snap-locking hooks for easy operation and secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nut is used to compress the sleeve to hold the catheter in position, then the catheter can be blocked in the base, but the nut risks being lost when unscrewed and may twist the sleeve during screwing
Solution Approach 1:
The invention extracts the problematic nut component from the system and replaces it with a integrated rotatable shell mechanism. The shell itself performs the blocking function through its rotation-driven sleeve deformation, eliminating the separate nut that caused loss and twisting issues.
Solution Approach 2:
The invention merges the blocking mechanism and the securing mechanism into a single integrated system. The rotatable shell combines the function of deforming the sleeve to block the catheter with the function of securing everything in place, eliminating the need for separate nut and sleeve components.
2Adaptability or versatility
If the base is fixed to a medical device and the device must be changed, then the medical device can be unscrewed from the nozzle, but the nut may unscrew along with it
Solution Approach 1:
The invention removes the vulnerable nut component that could unscrew along with the medical device. The integrated shell mechanism remains firmly attached to the base structure, ensuring the blocking system stays reliable even when medical devices are frequently changed.
3Reliability
If a thin tubular sleeve is used to receive and compress the catheter, then the catheter can be blocked, but it is difficult to determine if the catheter is correctly held
Solution Approach 1:
The invention incorporates a transparent viewing chamber that allows visual verification of catheter placement. The chamber enables operators to directly observe whether the catheter is correctly positioned and held by the sleeve, solving the detection difficulty without compromising blocking reliability.
4Reliability
If a rotatable shell with internal grooves is used to deform the sleeve, then the catheter can be blocked locally, but the system requires excessive force from the operator
Solution Approach 1:
The invention employs a dynamic progressive deformation mechanism where the shell's rotation gradually deforms the sleeve through its grooves rather than requiring sudden high force. The actuator translates rotational motion into controlled axial displacement, distributing the force application over time and reducing peak operator effort while maintaining blocking precision.
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 system provides a secure, ergonomic, and easy-to-use method for blocking catheters, preventing component loss and ensuring proper placement, while allowing for effortless release and retraction, enhancing the mechanical stability and usability of catheters during medical procedures.
Implementation Method 1
The radial compression of the sleeve by the nut in fact holds the catheter in position in the base
Implementation Method 2
a base, comprising a body adapted for housing a sleeve made of elastomer material
Implementation Method 3
featuring a transparent viewing chamber for verification
Data Source
AI summary
The invention relates to a releasable blocking system (1) of a catheter (4), comprising a base (2) adapted to receive a catheter (4), and a shell (3), mounted in rotation on the base (2) between an open position, in which the shell (3) is away from the base (2), and a closed position, in which the shell (3)is hooked on the base (2) and blocks the catheter (4) in position, in which:the system comprises an actuator (25) provided with a guide aperture (251), mobile in a housing (20) between a rest position and a blocking position, the actuator (25) comprising a first drive element (255),the shell (3)comprises a second drive element (33), adapted to cooperate with the first drive element (255) when the shell (3) is shifted from its open position to its closed position, and shift the actuator (25) to its blocking position.