Arrangement with catheter and sensor arrangement

An arrangement for providing information of an alignment of a catheter, the arrangement comprises:

• a catheter;
• a sensor arrangement comprising a first sensor and a second sensor,
• wherein the first and the second sensors are adapted to measure respective velocities of a fluid flow,
• and wherein the first and second sensors are arranged at a circumference of the catheter, such that a sensor area of the first sensor is not in the same plane as a sensor area of the second sensor;
• wherein the first and second sensors are each adapted to provide information such that an alignment of the catheter with respect to a direction of the fluid flow is determinable based on the respective velocities of the fluid flow measured by the first and second sensors, wherein the information is a measured signal, and the alignment is determinable by analysing a difference between the measured signals,
• wherein the sensor arrangement further comprises a third sensor adapted to measure a temperature of a fluid corresponding to the fluid flow, and
• wherein the first, second, and third sensor are arranged at a circumference of the catheter;
• and
• a processing unit configured to process the respective velocities of the fluid flow provided by the first and second sensors,
• wherein the first and second sensors are arranged at the circumference of the catheter and spaced to each other, wherein the spacing is greater than 10 μm or less than 15% of the circumference of the catheter;
• wherein the first and second sensors are each thermal flow velocity sensors,
• wherein an axis of the first sensor is parallel to an axis of the second sensor, and
• wherein the first and second sensors are arranged such that when the catheter is directly aligned with the fluid flow, the first and second sensors provide the same measurement, and when the catheter is not directly aligned with the fluid flow, the first and second sensors provide different measurements which include thermal cross talk between the first and second sensors.

An arrangement for providing information of an alignment of a catheter, the arrangement comprises:

• a catheter;
• a flexible carrier configured to wrap around and be glued to the catheter;
• a sensor arrangement on the flexible carrier, the sensor arrangement comprising:
• a first sensor;
• a second sensor;
• wherein the first and the second sensors are adapted to measure respective velocities of a fluid flow,
• and wherein the first and second sensors are arranged at a circumference of the catheter, such that a sensor area of the first sensor is not in the same plane as a sensor area of the second sensor;
• wherein the first and second sensors are each adapted to provide information such that an alignment of the catheter with respect to a direction of the fluid flow is determinable based on the respective velocities of the fluid flow measured by the first and second sensors, wherein the information is a measured signal, and the alignment is determinable by analysing a difference between the measured signals;
• and
• a processing unit configured to process the respective velocities of the fluid flow provided by the first and second sensors;
• wherein the first and second sensors are each thermal flow velocity sensors,
• wherein an axis of the first sensor is parallel to an axis of the second sensor, and
• wherein the first and second sensors are arranged such that when the catheter is directly aligned with the fluid flow, the first and second sensors provide the same measurement, and when the catheter is not directly aligned with the fluid flow, the first and second sensors provide different measurements which include thermal cross talk between the first and second sensors.