| 1 |
oscillating axis
|
7
|
cuvette with blood sample
|
| 2 |
counterforce spring |
8
|
fibrin strands & platelet aggregates
|
| 3 |
light beam from LED |
9
|
heated cuvette holder |
| 4 |
mirror |
10
|
ball bearing
|
| 5 |
detector (electr. camera) |
11 |
data processing unit
|
6
|
sensor pin
|
|
|
|
Thromboelastometry
ROTEM® is derived from "rotational thromboelastometry",
a powerful technique for the assessment of blood
coagulation disorders.
Principle:
- Blood is added into a disposable cuvette
(measuring cell) in a heated cuvette holder
- Disposable pin (sensor) is fixed on the tip of a
rotating shaft (axis).
- The rotating shaft is stabilized by a high precision
ball bearing system
- Shaft rotates back and forth 4.75 degrees
- Shaft is connected to a spring to measure elasticity
- Exact position of the shaft is detected by reflection
of light on small mirror on the shaft.
- Data obtained from the reflected light is then
computer processed into a graphical output.
|
Thromboelastometry