Piezoelectric Arterial Blood Sampling Pen for Accurate Insertion
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Solution Overview
Problem
Current arterial blood sampling methods rely heavily on subjective clinical experience, leading to inaccurate needle insertion, increased patient discomfort, and resource wastage due to repeated punctures, particularly for junior operators.
Innovation Solution
A precise arterial blood sampling device utilizing piezoelectric sensors to detect arterial pulsation, combined with a control chip and display screen, to accurately determine the optimal needle penetration point, ensuring accurate and comfortable sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If subjective clinical experience is used to select artery and insertion angle, then the operation can be performed with simple equipment, but the accuracy of needle insertion is low leading to repeated punctures
Solution Approach 1:
The patent replaces the mechanical/manual method of locating arteries and determining insertion angles with electronic sensing technology. Piezoelectric sensors detect arterial pulsation signals, and the system processes these signals to automatically determine the optimal insertion point and angle, substituting human tactile experience with electronic detection and computational analysis.
Solution Approach 2:
The patent introduces an intermediary processing system between the artery detection and needle insertion steps. This intermediary system includes signal processing circuits, control chips, and display devices that analyze arterial pulsation signals and provide guidance for accurate needle insertion, serving as a bridge between detection and action.
2Reliability
If repeated puncture is performed due to inaccurate first attempt, then the sampling can eventually be obtained, but patient discomfort increases and vascular injury occurs
Solution Approach 1:
The patent performs preliminary detection and analysis of arterial pulsation signals before the actual needle insertion. The system locates the optimal insertion point and determines the correct angle in advance by detecting arterial pulsation, ensuring that the first puncture attempt is accurate and avoids the need for repeated injections that cause vascular injury and patient discomfort.
3Ease of operation
If junior operators perform manual puncture, then the operation can be performed without specialized training, but the success rate is low due to lack of experience
Solution Approach 1:
The patent enables the system to perform self-detection and self-guidance for artery localization. The piezoelectric sensors automatically detect arterial pulsation signals, the control system processes these signals to identify the optimal insertion point and angle, and the display provides real-time guidance. This self-service capability allows junior operators to perform accurate punctures without relying on extensive clinical experience.
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
The device ensures accurate needle insertion into arteries, reducing patient discomfort and resource wastage by minimizing repeated punctures and improving the efficiency of blood sampling.
Implementation Method 1
A first piezoelectric sensor sensing column is horizontally fixed to the lower end of the interior of the front pen container, a horizontal slide rail is provided on the upper part of the interior of the front pen container, a second piezoelectric sensor sensing column is provided on the horizontal slide rail
Data Source
AI summary
A precise arterial blood sampling device comprising a pen cap and a pen container which comprises a front pen container and a rear pen container, wherein: a first piezoelectric sensor sensing column is horizontally fixed to the front pen container, a horizontal slide rail is provided on the front pen container, a second piezoelectric sensor sensing column is provided on the horizontal slide rail, splines are provided on the second piezoelectric sensor sensing column, an elongated groove is formed on the front pen container, and a sensing column extending/retracting control wheel fitting with the splines is provided in the elongated groove; and a control chip, a needle ejection mechanism, a display screen, and a switch are provided inside the rear pen container, and the first piezoelectric sensor sensing column, the second piezoelectric sensor sensing column and the display screen are connected to the control chip respectively.