Vascular Puncture Backflow Detection and Closed-Loop Inhibition
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Solution Overview
Problem
Existing vascular puncture methods often result in significant backflow of blood, which can cause physical and mental distress to patients, especially when automated systems lack control mechanisms to manage backflow.
Innovation Solution
A backflow inhibition apparatus that includes a puncture device with a backflow detection unit, inhibition unit, and control unit to manage and reduce backflow by comparing detected backflow rates or amounts to predefined thresholds, using mechanisms like valves or guide wires to inhibit backflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated puncture is performed without backflow control, then puncture efficiency is improved, but patient burden increases due to significant backflow
Solution Approach 1:
The system employs a backflow detection unit that continuously monitors backflow during puncture and provides feedback to the control unit. The control unit then adjusts the puncture drive unit's operation in real-time to inhibit excessive backflow, creating a closed-loop control system that maintains puncture efficiency while protecting the patient from harmful backflow effects.
Solution Approach 2:
The puncture drive unit is designed with dynamic control capabilities, allowing it to adjust its puncture speed and pressure automatically during the procedure. This dynamic adjustment enables the system to maintain optimal puncture efficiency while reducing backflow by modulating the puncture parameters based on real-time conditions.
2Object-affected harmful factors
If manual pressure control is used to reduce backflow, then patient burden is reduced, but automation is lost requiring continuous operator intervention
Solution Approach 1:
The system implements self-service automation where the control unit automatically monitors backflow via the detection unit and adjusts the puncture drive unit without operator intervention. The system serves itself by autonomously regulating puncture parameters to maintain optimal backflow levels, eliminating the need for continuous manual pressure control while protecting the patient.
Solution Approach 2:
The automated feedback loop continuously monitors backflow conditions and automatically adjusts puncture parameters through the control unit and puncture drive unit. This closed-loop system replaces manual operator intervention with automated real-time adjustments, maintaining low backflow levels throughout the puncture procedure without requiring continuous human involvement.
3Object-affected harmful factors
If backflow inhibition is applied during entire puncture process, then backflow burden is minimized, but puncture reliability may be compromised
Solution Approach 1:
The system dynamically adjusts the intensity and timing of backflow inhibition during the puncture process rather than applying constant inhibition. The control unit modulates the puncture drive unit's operation to provide backflow control only when and where needed, maintaining puncture reliability by allowing necessary backflow for successful vessel engagement while preventing excessive backflow that causes patient burden.
Solution Approach 2:
The control unit changes puncture parameters such as speed, pressure, and depth in real-time based on detected backflow conditions. By dynamically adjusting these parameters, the system achieves effective backflow control during critical phases while maintaining optimal parameters for reliable puncture success, balancing both objectives through parameter optimization.
Data Source
AI summary
A backflow inhibition apparatus that detects a state of backflow and that performs control for reducing the amount of backflow caused by puncturing a living body using a puncture device includes a backflow detection unit that detects an amount or a rate of backflow from a blood vessel to a proximal end side of the puncture device, a backflow inhibition unit that operates in such a way as to inhibit the amount of backflow into the puncture device, and a control unit that controls operation of the backflow inhibition unit on a basis of the amount or rate of backflow detected by the backflow detection unit, in which the control unit operates the backflow inhibition unit in such a way as to inhibit the amount of backflow if the amount or rate of backflow detected by the backflow detection unit is larger than a first threshold.