Integrated Guide Wire Insertion Device for Catheterization
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Solution Overview
Problem
Conventional catheter procedures are complex and prone to failure due to unstable operation during injection needle removal and inaccurate guide wire insertion, which can damage blood vessels and hinder successful catheter placement.
Innovation Solution
A guide wire insertion device integrating an injection unit with a guide wire transfer unit, featuring a piston-driven injection needle and a rotatable driving roller system with a spiral torsion spring, allowing for continuous injection and precise guide wire transfer through a hemostasis valve, enabling one-handed operation and adjustable guide wire length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the syringe is removed to leave only the injection needle for guide wire insertion, then the guide wire can be inserted through the injection needle, but the operation becomes unstable and may damage the blood vessel
Solution Approach 1:
The patent combines the syringe body and injection needle into a single integrated catheter insertion device. The syringe body serves dual purposes: it can be pulled back to create negative pressure for blood collection, and it provides a stable structural framework that prevents the injection needle from becoming unstable during guide wire insertion. This merging eliminates the need to remove the syringe, maintaining operational stability while preventing blood vessel damage.
Solution Approach 2:
The syringe body is designed to perform multiple functions: it acts as both a syringe for blood collection and as a stable structural support during guide wire insertion. The injection needle remains integrated within the syringe body, allowing the device to transition smoothly between blood collection mode and guide wire insertion mode without requiring removal of components, thereby maintaining reliability throughout the procedure.
2Productivity
If the injection needle is removed after blood collection, then the guide wire can be inserted, but the procedure becomes complex and prone to failure
Solution Approach 1:
The patent merges the blood collection function and guide wire insertion function into a single integrated device. The injection needle remains integrated within the syringe body throughout the procedure, eliminating the need to remove and reinsert components. This integration simplifies the procedure by reducing the number of steps while maintaining both blood collection capability and guide wire insertion functionality.
Solution Approach 2:
The device is pre-configured with the injection needle integrated into the syringe body, ready for immediate use. The negative pressure mechanism is pre-established within the syringe body, allowing blood collection to occur automatically when the needle is inserted into the blood vessel. This preliminary configuration eliminates the need for subsequent component removal and simplifies the overall procedure.
3Measurement precision
If the guide wire insertion length is not accurately adjusted, then the catheter can be inserted, but the insertion length cannot be precisely controlled
Solution Approach 1:
The patent introduces a guide wire with adjustable length as an intermediary element between the injection needle and the catheter. The guide wire can be inserted through the injection needle to a precise depth, and its length can be adjusted to match the required catheter insertion depth. This intermediary guide wire serves as a measurable and adjustable reference that enables precise control over the catheter insertion length while maintaining ease of operation.
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
Facilitates accurate and easy injection of the injection needle and guide wire insertion, reducing the risk of vessel damage and procedural failure, allowing for convenient and precise catheter placement with controlled guide wire transfer.
Implementation Method 1
a driving source installed in the housing (210) to drive the driving roller (220)
Implementation Method 2
The divergent tube portion (150) is provided with a hemostasis valve (170) to prevent a leakage through the wire passage (WH) during the injection of injection needle (110)
Implementation Method 3
a piston (130) which is slidably coupled within the cylinder body (120)
Data Source
AI summary
Disclosed herein is a guide wire insertion device for a catheter procedure. The guide wire insertion device for a catheter procedure includes an injection unit (100) including an injection needle, and a guide wire transfer unit (200) which transfers a guide wire so as to insert the guide wire through the injection needle, and the injection unit and the guide wire transfer unit are integrated with each other so as to continuously perform injection of the injection needle and transfer of the guide wire. According to such a configuration, the injection of the injection needle and the insertion of the guide wire may be accurately and easily performed so that a catheter procedure is convenient.