Method to determine a coagulation property of a fluid
View Patent ↗Apparatus and method for analysing a biological fluid sample to determine a disturbance of haemostasis resulting in a change of viscosity.
1. A method for determining a coagulation property of a sample of fluid, comprising:
causing within the sample oscillation of at least one magnet within a first frequency range for a first period of time;
causing oscillation of the at least one magnet within a second frequency range different from the first frequency range for a second period of time;
increasing the period of the second oscillation from an initial second frequency by a fixed time increment per pulse;
measuring an output signal of at least one sensor, the output signal being indicative of a position or motion of the at least one magnet; and
determining the coagulation property of the sample based on the output signal.
2. The method of claim 1 , wherein said first frequency is greater than said second frequency.
3. The method of claim 1 wherein the fixed time increment per pulse is 0.15 milliseconds.
4. The method of claim 1 , wherein the first frequency is between 5 and 12 Hz.
5. The method of claim 1 , wherein the first frequency is between 7 and 10 Hz.
6. The method of claim 1 , wherein the first frequency is substantially 8 Hz.
7. The method of claim 1 , wherein the first period of time is between 2 and 8 seconds.
8. The method of claim 1 , wherein the first period of time is between 4 and 6 seconds.
9. The method of claim 1 , wherein the first period of time is substantially 5 seconds.
10. The method of claim 1 , wherein the second frequency is between 2 and 6 Hz.
11. The method of claim 1 , wherein the second frequency is between 3 and 5 Hz.
12. The method of claim 1 , wherein the second frequency is substantially 4 Hz.