Integrated Catheter Puncture Device with Retractable Needle
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Solution Overview
Problem
Current catheter puncture sets require multiple components and complex handling, increasing the risk of contamination and air embolism, and complicating the insertion process due to protruding needles and blood collection containers.
Innovation Solution
A closed system catheter puncture set with a safety housing that integrates all necessary components, allowing for easy detachment of unnecessary parts and secure handling, featuring a snap connection for the puncture needle and blood collection container, and a peel-away design for simplified catheter insertion and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate components (needle, guidewire, dilator, catheter) are used for catheterization, then the procedure can be performed with individual specialized tools, but the complexity of the procedure increases and the risk of contamination and air embolism increases
Solution Approach 1:
The patent combines the needle, guidewire, dilator, and catheter into a single integrated catheterization device. The needle assembly includes an integrated guidewire delivery mechanism, and the dilator is incorporated into the same structure, eliminating the need for separate manual manipulation of multiple instruments while maintaining all necessary catheterization functions.
Solution Approach 2:
The integrated device performs multiple catheterization functions (puncture, guidewire delivery, dilation, catheter insertion) through a single unified structure. The device can adapt its configuration during the procedure to perform different functions at different stages, reducing the need for multiple specialized tools.
2Adaptability or versatility
If multiple instruments are repeatedly inserted and withdrawn during catheterization, then each instrument can be optimized for its specific function, but the risk of contamination and air embolism increases
Solution Approach 1:
By combining multiple instruments into a single integrated device, the patent eliminates the repeated insertion and withdrawal of separate instruments. The entire catheterization process is performed through one continuous device, minimizing exposure to contamination and preventing air embolism by maintaining a closed system throughout the procedure.
Solution Approach 2:
The integrated device allows the catheterization procedure to continue without interruption or withdrawal of instruments. The device remains in place throughout the entire procedure, performing sequential functions (puncture, guidewire delivery, dilation, catheter placement) in a continuous manner, eliminating the gaps where contamination or air embolism could occur.
3Adaptability or versatility
If a traditional catheterization kit with multiple separate components is used, then each component can be independently optimized, but the handling becomes more difficult and requires considerable experience
Solution Approach 1:
The patent integrates multiple previously separate components into a single device, simplifying handling by eliminating the need to manually coordinate multiple instruments. The integrated structure provides a unified grip and control mechanism, making the procedure easier to perform and reducing the experience level required.
Solution Approach 2:
The integrated device incorporates movable and adjustable components that allow dynamic adaptation during the procedure. The device can change its configuration automatically or with minimal manipulation to perform different functions, reducing the skill required to manage complex instrument transitions.
4Ease of operation
If the puncture needle and blood collection container protrude from the housing, then they are easily accessible for puncture, but the device becomes more cumbersome and harder to handle
Solution Approach 1:
The patent designs the device so that the needle and blood collection container can be retracted into the housing after puncture. The needle assembly is nested within the housing structure, and the blood collection container is integrated into the same space, allowing the device to maintain a compact form factor while providing full functionality when needed.
Solution Approach 2:
The device incorporates movable components that can extend and retract. The needle and blood collection container are positioned to protrude during the puncture phase for easy access, then can be retracted into the housing after the procedure is complete, transforming the device from an extended to a compact configuration.
Data Source
Figure 1~2
Figure 3~4
AI summary
Catheter puncture device (2) with a tubular housing (3), which merges into an extension piece for guiding the puncture needle (9) that carries a blood collection container (14), abutment and blocking element, and from which a branch portion (5) branches off through which a catheter (8) can be pushed into the elongate housing portion, with a safety housing (1) releasably connected to the tubular housing (3), wherein the puncture needle (9) is guided on or in this safety housing (1), and a locking mechanism is provided for the puncture needle (9) carrying a blood collection container (14) and retracted after the puncture such that, after the puncture, the retraction of the puncture needle (9) into the safety housing (1) and the advance of the catheter (8) into the tubular housing (3), it is possible for the safety housing (1), with the retracted puncture needle (9) locked therein and the blood collection container (14) attached to the puncture needle, to be detached from the tubular housing (3).