A Miniaturized Hemoretractometer for Blood Clot Retraction Testing

Area of Science:

• Biomedical Engineering
• Hematology
• Medical Diagnostics

Background:

• Blood coagulation is vital for hemostasis, but its dysregulation leads to bleeding or thrombotic disorders.
• Current whole blood coagulation diagnostics show clinical value but have limitations for point-of-care use.
• Existing diagnostic tools struggle with assessing the complexity of coagulation and global hemostasis measurements.

Purpose of the Study:

• To develop a miniaturized device for precise, real-time measurement of clot retraction force using whole blood.
• To leverage advancements in soft materials and device miniaturization for a novel coagulation assay.
• To establish the clinical utility of the mHemoRetractoMeter (mHRM) for point-of-care coagulation monitoring.

Main Methods:

• Development of a miniaturized clot retraction force assay device (mHemoRetractoMeter, mHRM) using functional soft materials.
• Utilizing minute amounts of whole blood for precise, real-time measurements of dynamic clot retraction forces.
• Conducting systematic studies to evaluate the effects of assay temperature, clotting agents, and drugs on clot retraction force.

Main Results:

• The mHRM successfully performed precise, real-time measurements of dynamic clot retraction forces.
• Systematic studies demonstrated the mHRM's capability to assess the impact of various factors on clot retraction.
• The device showed consistent performance across different assay conditions and sample treatments.

Conclusions:

• The miniaturized mHemoRetractoMeter (mHRM) is a promising point-of-care tool for coagulation monitoring.
• Its low fabrication cost, small size, and minimal blood sample requirement enhance its potential for widespread clinical application.
• The mHRM offers a novel approach to assessing hemostasis by measuring dynamic clot retraction forces.