Blood Collection Tube Mix Detection Unit for Clot Prevention
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Solution Overview
Problem
Inadequate mixing of blood with anticoagulants in blood collection tubes can lead to clot formation, causing diagnostic errors and delays, due to insufficient inversion or mixing during the phlebotomy process, which is often hurried by external and internal pressures.
Innovation Solution
A blood collection apparatus equipped with a mix detection unit that counts the number of inversions of the blood collection container to ensure adequate mixing, using a combination of mechanical, optical, or chemical mechanisms to detect and record the mixing action, providing feedback to medical personnel through displays or wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the phlebotomist performs multiple inversion steps to ensure adequate mixing of blood with anticoagulants, then the mixing quality improves, but the time required for the phlebotomy process increases and productivity decreases
Solution Approach 1:
The patent applies feedback by providing real-time visual indicators (color-changing elements) that show whether adequate mixing has been achieved. The mix detection unit monitors the mixing process and gives feedback to the phlebotomist, allowing them to stop inverting once the target mixing level is reached, thus optimizing both mixing quality and process time.
Solution Approach 2:
The patent replaces the mechanical counting of inversions with an optical detection system. Instead of relying on manual tracking of inversion numbers, the system uses optical sensors and color-changing indicators to detect mixing adequacy, reducing the cognitive load and time required for monitoring the mixing process.
2Reliability
If the phlebotomist performs adequate mixing to prevent clot formation, then diagnostic accuracy improves, but the time required for blood collection increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the blood collection tube with specific mixing indicators and anticoagulant formulations that activate upon mixing. The mix detection unit is pre-installed and ready to detect mixing adequacy immediately, allowing for rapid assessment without delaying the diagnostic process.
Solution Approach 2:
The patent uses color changes as a visual indicator of mixing adequacy. The mix detection unit incorporates color-changing elements that transition from one color state to another as mixing progresses, providing an immediate and intuitive signal to the phlebotomist that adequate mixing has been achieved, thus preventing clots without extending collection time.
3Productivity
If the phlebotomist rushes through the phlebotomy process to maintain productivity, then healthcare delivery efficiency improves, but mixing quality deteriorates leading to diagnostic errors
Solution Approach 1:
The patent applies self-service by designing a system where the mix detection unit automatically monitors and indicates mixing adequacy without requiring active intervention or attention from the phlebotomist. The visual indicators self-update based on mixing progress, allowing the phlebotomist to maintain productivity while ensuring quality through passive monitoring.
Solution Approach 2:
The system provides continuous feedback through visual indicators that update in real-time as mixing occurs. This allows the phlebotomist to work efficiently without compromising quality, as the feedback mechanism automatically alerts them when adequate mixing is achieved, eliminating the need for deliberate counting or monitoring of inversion steps.
Data Source
AI summary
Blood collection apparatus includes a blood collection container and a mix detection unit operatively coupled to the blood collection container. The mix detection unit includes a device to produce a data signal indicative of the extent to which the blood collection container is moved in a manner to promote mixing of blood collected into the container and an anti-coagulant also present in the container. A method described herein provides for filling a blood collection container with blood, inverting the blood collection container by hand to mix the blood with an anti-coagulant, and viewing or listening to an indication generated by a mix detection device attached to the blood collection container, wherein the indication provides information about the appropriate amount of mixing for the blood.