Vascular Puncture Backflow Detection for Accurate Needle Insertion
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Solution Overview
Problem
Existing vascular puncture methods lack the ability to accurately control the position of the puncture device based on backflow information, leading to inefficiencies and potential patient distress due to failed punctures.
Innovation Solution
A vascular puncture apparatus that includes a puncture drive unit, a backflow detection unit, and a control unit to control the position of the puncture device based on detected backflow, ensuring accurate puncture by stopping or adjusting insertion when backflow is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automatic puncture apparatus is used to perform vascular puncture, then productivity is improved, but reliability deteriorates due to inability to control puncture based on backflow information
Solution Approach 1:
The patent implements a feedback mechanism by detecting backflow of blood into the needle lumen during automatic puncture. The detection unit monitors whether blood has entered the needle, and the control unit uses this information to determine when puncture has succeeded. This feedback loop enables the automatic puncture apparatus to adjust its operation based on real-time physiological responses, thereby maintaining high reliability while preserving automation benefits.
2Reliability
If manual puncture is performed by operator, then reliability is maintained through tactile perception and visual observation, but productivity deteriorates due to inability to accurately determine puncture position
Solution Approach 1:
The patent replaces the manual mechanical system of tactile perception and visual observation with an automated detection system. The detection unit automatically monitors backflow in the needle lumen, eliminating the need for operator tactile perception. This substitution maintains puncture accuracy while significantly improving productivity by enabling precise automatic control of the puncture process.
3Device complexity
If puncture device position is controlled without backflow information, then device complexity is reduced, but measurement precision deteriorates regarding puncture state
Solution Approach 1:
The patent introduces backflow detection as an intermediary mechanism to bridge the gap between simple device control and precise puncture state measurement. By monitoring whether blood enters the needle lumen, the system obtains indirect but reliable information about puncture success. This intermediary approach maintains relative simplicity of the control system while significantly improving measurement precision regarding puncture state.
Data Source
AI summary
A vascular puncture apparatus that controls a puncture device on the basis of information regarding backflow is provided. A vascular puncture apparatus includes a puncture drive unit that punctures a living body with a puncture device, a backflow detection unit that detects backflow from a blood vessel into the puncture device, and a control unit that controls a position of the puncture device by driving the puncture drive unit on the basis of information regarding the backflow detected by the backflow detection unit. When the backflow detection unit detects backflow from the blood vessel into a proximal end side of the inner needle while the puncture drive unit is inserting the puncture device, the control unit stops insertion of the puncture device.