C5.1 - Force Sensor for measuring interaction forces of cardiologists during heart catheterizations
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- C5 - Medical Systems
- T. Opitz, A. Sacakli, N. Stefanova, T. Rossner, T. Meiss, R. Werthschützky - Technische Universität Darmstadt (Germany)
- 422 - 425
This paper describes the development of a uniaxial force sensor for measuring interaction forces of a cardiologist. The technical challenges are limited construction volume inside the torque device, feed through of the guide wire through the force sensor and maintaining the standardized fixing mechanism of the guide wire. A force sensor is presented, which is capable of measuring forces from – 10 N to 10 N. Resistance strain gauges are used in full bridge alignment to compensate temperature drifts. The deformation element is made out of steel (SR275). The outer diameter of the force sensor is 5 mm, the length is 14 mm. The integration into the torque device is shown. Measurements show a non-linearity of 1.3 % and a hysteresis of 2.8 %. The measurement uncertainty is 3.88 %.