Rocker Element Locking Mechanism for Medical Aspiration Needle
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Solution Overview
Problem
Existing medical devices face challenges in precisely positioning and securely fixing aspiration needles due to complex structures and the risk of unintentional displacement during use, leading to orientation and handling issues for operators.
Innovation Solution
The integration of a rocker element between the adjusting element and the sliding part, allowing for longitudinal displacement and rotational positioning, which can be locked in place using friction or toothed devices to prevent unwanted movement, simplifying the device structure and enhancing manageability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping ring is used to lock the sliding part in position, then the sliding part can be securely fixed, but the device structure becomes more complex and one-handed operation becomes difficult
Solution Approach 1:
The patent combines the clamping function and locking function into a single integrated clamping ring mechanism. The clamping ring simultaneously performs both functions through its interaction with the sliding part and the receiving part, eliminating the need for separate clamping and locking components. This merging reduces device complexity while maintaining reliable locking capability.
2Ease of operation
If the clamping ring is displaced to achieve both setting and locking functions, then both functions can be performed, but unintentional displacement of the sliding part occurs
Solution Approach 1:
The patent implements a preliminary locking action where the clamping ring first engages with the sliding part to secure it in the desired position, and then engages with the receiving part to lock the position. This two-stage preliminary action ensures that the sliding part is secured before final locking, preventing unintentional displacement while maintaining ease of operation.
3Adaptability or versatility
If multiple components are used to achieve setting and locking functions, then both functions can be implemented, but the amount of equipment required becomes too high
Solution Approach 1:
The clamping ring is designed as a multi-functional component that performs both setting and locking functions. By making the clamping ring universal in its capabilities, the patent eliminates the need for separate setting and locking components, reducing the overall equipment quantity while maintaining full functional capability.
4Ease of manufacture
If the device structure is simplified, then ease of manufacture improves, but the risk of unintentional displacement increases
Solution Approach 1:
The patent segments the clamping ring into distinct functional zones: a clamping surface for securing the sliding part and a locking surface for engaging with the receiving part. This segmentation allows the simplified single-component structure to maintain reliable position security by clearly separating the setting and locking functions within the same component.
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
This solution reduces the complexity of the device structure, minimizes the risk of unintentional displacement, and improves handling by allowing precise and secure positioning of medical components, such as aspiration needles, without orientation issues for operators.
Implementation Method 1
which can be blocked in the receiving part by determining the penetration depth of the sliding part... at least one rocker element is arranged between the adjusting element and the sliding part, which by rotating the adjusting element transversely to the longitudinal direction of the sliding part between a first rotary position, in which a longitudinal displaceability of the adjusting element is permitted
Data Source
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Figure 6~7
AI summary
The invention relates to a device for establishing the penetration depth of a tubular or rod-shaped sliding part in a receiving part and to a medical handpiece using such devices, wherein in order to establish the penetration depth of a tubular or rod-shaped sliding part (2), in particular of a medical aspiration needle carrier part, in a receiving part (3) by means of an adjusting element (4) that surrounds the sliding part (2), wherein said adjusting element can be adjusted in the longitudinal direction of the sliding part (2) and can be blocked in the particular position thereof by means of a clamping device (5) in order to establish the penetration depth of the sliding part (2) in the receiving part (3), the clamping device (5) is formed in that at least one rocker element (6; 7) is arranged between the adjusting element (4) and the sliding part (2), wherein the at least one rocker element can be moved between a first rotational position, which allows the adjusting element (4) to be slid in the longitudinal direction of the sliding part (2), and a second rotational position, which differs from the first rotational position and which blocks the adjusting element from being slid in such a way, by rotating the adjusting element (4) transversely to the longitudinal direction of the sliding part (2).