Stepped Cannula Holder for Multi-Size Universal Reception
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Solution Overview
Problem
Existing cannula arrangements face challenges in manufacturing and application, particularly in the need for multiple tools leading to higher unit costs and inefficient designs.
Innovation Solution
A cannula arrangement with adjustable cross-sectional dimensions and adjustable cross-sectional dimensions, featuring a base body with a cannula holder and cannula, allowing for universal combination possibilities and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cannula holder with a single fixed cross-sectional dimension is used, then the manufacturing process is simple, but the adaptability to different cannula sizes is limited
Solution Approach 1:
The cannula holder is segmented into multiple receiving sections along its longitudinal axis, each with a different cross-sectional dimension. This allows the single cannula holder to accommodate multiple cannula sizes (e.g., 14G, 16G, 18G) simultaneously, resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The cannula holder is designed as a universal component that can receive and secure multiple types of cannulas with different cross-sectional dimensions. By integrating multiple receiving sections with varying dimensions into one holder, the design achieves multi-functionality without requiring separate holders for each cannula size.
2Ease of manufacture
If multiple separate cannula holders are used for different cannula sizes, then each holder can be optimized for its specific cannula, but the number of tools and unit costs increase
Solution Approach 1:
Multiple cannula holder functions are merged into a single integrated holder structure. Instead of using separate holders for different cannula sizes, the invention combines multiple receiving sections with different cross-sectional dimensions into one holder, reducing the total number of components and simplifying manufacturing while maintaining the ability to accommodate various cannula sizes.
3Reliability
If the proximal end of the cannula is bonded to the cannula holder, then the connection is secure and reliable, but the positioning precision during assembly becomes more critical
Solution Approach 1:
The cannula holder features localized receiving sections with specific cross-sectional dimensions tailored to match corresponding cannula sizes. This local adaptation ensures that each cannula is received in a precisely matched section, facilitating accurate positioning during assembly while maintaining a secure bonded connection. The local quality of each receiving section is optimized for its specific cannula type.
Data Source
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AI summary
The invention relates to a cannula assembly (1) comprising a cannula support (6) and a cannula (10) held thereon. When viewed in the axial section, a distal end section (32) of a through-flow channel (9) of the cannula support (6) has a stepped cross-sectional shape with multiple different cross-sectional dimensions (35, 36, 37) which decrease in the axial direction. Each of the cross-sectional dimensions (35, 36, 37) defines a dedicated receiving section (38, 39, 40) for the respective cannula (10) to be received therein. Each of the cross-sectional dimensions (35, 36, 37) of the receiving sections (38, 39, 40) is designed so as to be able to receive the cannula (10) with the corresponding cannula cross-sectional dimension (34).