Blood Vessel Puncture Control Using Diameter-Based Vasospasm Detection
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Solution Overview
Problem
Existing blood vessel puncture methods struggle with vasospasm, making it difficult to secure a lumen for device insertion and often requiring manual vasodilator administration to manage vasospasm, which complicates the procedure.
Innovation Solution
A blood vessel puncture apparatus equipped with a measurement unit to detect blood vessel diameter and a control unit that can start, continue, or stop needle movement based on contraction detection, using imaging or force sensors to set thresholds for vasospasm detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic blood vessel puncture is performed without vasospasm detection, then puncture procedure is simple and fast, but vasospasm cannot be detected leading to potential failure in securing lumen for device insertion
Solution Approach 1:
The system incorporates a measurement unit that continuously monitors blood vessel diameter during the puncture procedure and provides real-time feedback to the control unit. When vasospasm is detected (blood vessel diameter decreases below threshold), the control unit automatically adjusts needle movement or alerts the operator, enabling timely response to maintain reliable puncture success
Solution Approach 2:
The measurement unit operates before and during the puncture procedure to detect blood vessel diameter changes in advance. By detecting vasospasm before it completely blocks the lumen, the system can take preliminary corrective actions (adjusting needle position, pausing puncture, or alerting operator) to prevent puncture failure
2Productivity
If manual vasodilator administration is used to manage vasospasm, then vasospasm can be treated, but procedural complexity increases and time is lost
Solution Approach 1:
The system automatically detects vasospasm through the measurement unit and triggers appropriate responses without requiring manual intervention for detection. The control unit autonomously manages the puncture process by adjusting needle movement or pausing the procedure when vasospasm is detected, reducing the need for manual vasodilator administration and optimizing procedure efficiency
Solution Approach 2:
Real-time feedback from the measurement unit enables the control unit to automatically respond to vasospasm events, eliminating the delay associated with manual detection and treatment. The system can immediately adjust puncture parameters or alert the operator, significantly reducing the time lost to manual vasodilator administration
3Manufacturing precision
If needle movement continues despite blood vessel contraction, then puncture completion is maintained, but vessel damage or incomplete puncture may occur
Solution Approach 1:
The control unit receives continuous feedback from the measurement unit regarding blood vessel diameter during needle movement. When contraction (vasospasm) is detected, the control unit automatically adjusts needle movement parameters (speed, position, or pause) to prevent vessel damage while maintaining puncture accuracy, resolving the contradiction between completing puncture and avoiding harm
Data Source
AI summary
A blood vessel puncture apparatus capable of detecting vasospasm and a method for controlling a blood vessel puncture system. The blood vessel puncture apparatus connectable to an imaging unit that measures a blood vessel diameter and a drive unit that moves a needle that performs puncture includes a control unit that receives information of a measurement result from the imaging unit and controls an operation of the drive unit, in which the control unit determines whether a blood vessel contracts from the measurement result acquired from the imaging unit, and controls the drive unit to start, continue, or stop movement of the needle in a case where it is determined that the blood vessel contracts.