Catheter Insertion Circuit for Electrical Vein Entry Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current catheter insertion systems face challenges in accurately detecting vein entry and facilitating successful first-time placement, particularly in fragile or small veins, leading to increased patient pain, procedural costs, and adverse events due to repeated attempts.
Innovation Solution
The development of catheter insertion systems that utilize electrical properties to detect the entry of a needle and guidewire into a blood vessel or air-filled space, employing a detection unit with an electrical circuit to differentiate between subcutaneous tissue and fluids or air, and assist in catheter advancement through the integrated guidewire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional manual catheter insertion methods are used, then the procedure can be performed with simple equipment, but the success rate of first-time placement is low and patient pain increases
Solution Approach 1:
The patent replaces manual visual assessment and tactile feedback with an automated electrical detection system. The detection unit uses electrical circuits to sense changes in electrical properties (conductivity, impedance) that occur when the needle enters the vein, providing objective real-time feedback to guide catheter insertion and improve first-time success rate while reducing unnecessary manipulation and patient pain.
Solution Approach 2:
The system incorporates real-time feedback through the detection unit that monitors electrical properties during needle advancement. When the needle enters the vein, the change in electrical conductivity is detected and signaled to the operator, providing immediate feedback to confirm proper placement before catheter advancement, thereby improving success rate and reducing repeated attempts that cause pain.
2Reliability
If multiple catheter insertion attempts are made, then the catheter can eventually be placed, but procedural costs increase and adverse events occur
Solution Approach 1:
The detection unit performs preliminary detection of vein entry before catheter advancement is attempted. By detecting electrical property changes that indicate successful needle placement in the vein, the system allows operators to confirm proper positioning before advancing the catheter, preventing failed attempts and reducing the need for repeated procedures that waste time and increase costs.
Solution Approach 2:
Real-time electrical feedback from the detection unit guides each insertion attempt, providing immediate information about needle placement accuracy. This feedback mechanism reduces uncertainty and enables operators to make informed decisions about catheter advancement, thereby increasing first-time success rate and reducing the time lost to repeated attempts.
3Reliability
If multiple catheter insertion attempts are made, then the catheter can eventually be placed, but adverse events such as phlebitis and infection increase
Solution Approach 1:
The detection unit provides real-time electrical feedback to confirm accurate needle placement within the vein before catheter advancement. This feedback mechanism reduces the likelihood of improper placement that could cause phlebitis, infiltration, or infection, thereby decreasing adverse events while maintaining high success rates for first-time placement.
Solution Approach 2:
The system provides preliminary confirmation of proper needle placement through electrical detection before the catheter advancement step. This preemptive verification acts as a protective measure, ensuring that subsequent catheter insertion is performed from a confirmed correct position, thereby preventing complications such as vein wall damage, phlebitis, and infection that could result from improper placement.
4Reliability
If electrical detection systems are used to detect vein entry, then first-time placement success rate improves, but device complexity increases
Solution Approach 1:
The detection unit is designed to be integrated with standard catheter insertion procedures and equipment. The electrical detection functionality is incorporated into a compact device that can be attached to existing catheter kits, allowing the system to perform both detection and guidance functions without requiring entirely separate equipment, thereby managing complexity while improving success rates.
Solution Approach 2:
The detection unit serves as an intermediary device that bridges the gap between simple manual insertion and complex surgical-grade systems. It provides essential electrical detection and feedback capabilities through a relatively simple attachment device that interfaces with standard catheter components, improving first-time success without requiring complete system replacement or excessive complexity.
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 patient pain and procedural costs by improving the success rate of first-time catheter placement, minimizing adverse events, and streamlining the insertion process, thereby enhancing patient care and healthcare system efficiency.
Implementation Method 1
employing a detection unit with an electrical circuit to differentiate between subcutaneous tissue and fluids or air
Data Source
AI summary
Disclosed catheter insertion systems enable the user to identify the location of the needle based on the electrical properties of subcutaneous tissue relative the electrical properties of other fluids such as blood or air. Disclosed systems can include one or more of the following features: 1) the catheter assembly is modular (e.g., the catheter can be connected and disconnected from the detection unit at will); 2) the detection unit employs an electrical circuit that allows for the discernment between subcutaneous tissue and blood; 3) the system assists the end user with catheter advancement. Some embodiments can be used to insert catheters into a spaces where the needle passes first through subcutaneous fat and muscle before entering fluid or air.