Abstract: A catheter sensor array includes a catheter, a plurality of sensor elements positioned at a distal end of the catheter, and a plurality of sensor controllers each connected to at least one of the sensor elements by a first connection. Each of the sensor controllers is positioned along a length of the catheter closer to the distal end of the catheter than to a proximal end of the catheter opposite the distal end.

Abstract: Systems and method for flow sensing are provided. One system includes a flow conduit configured to allow fluid flow therethrough, a flow disturber disposed in the flow conduit and configured to impart a flow disturbance to the fluid flow and an actuator operably connected to the flow disturber to control the flow disturber to impart the flow disturbance to the fluid flow. The system further includes a plurality of sensors disposed in the flow conduit that are configured to have a geometrical and functional relationship with the flow conduit and the flow disturber, wherein the plurality of sensors are responsive to flow characteristics in the flow conduit. The system also includes a processor operably coupled to the plurality of sensors and configured to determine a flow rate of the fluid flow in the flow conduit using timing characteristics to select a processing method.

Abstract: Systems and methods for flow sensing in a conduit are provided. One system includes a flow disturber disposed in a flow conduit and configured to impart a flow disturbance to the fluid flow. The system further includes a plurality of flow sensors disposed in the flow conduit and responsive to flow characteristics in the flow conduit. The system also includes a frequency resolver configured to determine frequency information related to the fluid flow based on the flow characteristics. The frequency resolver uses one or more time sample windows to select data samples for use in determining the frequency information, wherein a length of one or more of the time sample windows is based at least in part on the flow characteristics. The system additionally includes a processor configured to determine a flow rate of the fluid flow in the flow conduit using the frequency information.

Abstract: Systems and methods for temperature compensated flow sensing are provided. One system includes a flow disturber disposed in a flow conduit, wherein the flow disturber is configured to impart a flow disturbance to the fluid flow. The system further includes a plurality of flow sensors disposed in the flow conduit, wherein the plurality of sensors are responsive to flow characteristics in the flow conduit. The system also includes at least one temperature sensor disposed in the flow conduit, wherein the at least one temperature sensor is responsive to temperature characteristics in a vicinity of the plurality of flow sensors. The system additionally includes a measurand separator configured to generate an output signal based on at least one of the flow characteristics or temperature characteristics. The system includes a processor configured to determine a temperature compensated flow rate of the fluid flow in the flow conduit using the output signal.

Abstract: Systems and methods for flow sensing in a conduit are provided. One system includes a flow disturber disposed in a flow conduit and configured to impart a flow disturbance to the fluid flow. The system further includes a plurality of flow sensors disposed in the flow conduit and responsive to flow characteristics in the flow conduit. The system also includes a frequency resolver configured to determine frequency information related to the fluid flow based on the flow characteristics. The frequency resolver uses one or more time sample windows to select data samples for use in determining the frequency information, wherein a length of one or more of the time sample windows is based at least in part on the flow characteristics. The system additionally includes a processor configured to determine a flow rate of the fluid flow in the flow conduit using the frequency information.

Abstract: Systems and method for flow sensing are provided. One system includes a flow conduit configured to allow fluid flow therethrough, a flow disturber disposed in the flow conduit and configured to impart a flow disturbance to the fluid flow and an actuator operably connected to the flow disturber to control the flow disturber to impart the flow disturbance to the fluid flow. The system further includes a plurality of sensors disposed in the flow conduit that are configured to have a geometrical and functional relationship with the flow conduit and the flow disturber, wherein the plurality of sensors are responsive to flow characteristics in the flow conduit. The system also includes a processor operably coupled to the plurality of sensors and configured to determine a flow rate of the fluid flow in the flow conduit using timing characteristics to select a processing method.

Abstract: Systems and method for acoustic detection using flow sensors are provided. One system includes a flow conduit configured to allow fluid flow therethrough and a flow disrupter configured to impart a flow disturbance to the fluid flow. The system also includes at least one of a first sensor or a second sensor. The first sensor is disposed within the flow conduit at a first position, wherein the first sensor is responsive to first disturbances and configured to generate signals characteristic of the first disturbances. The second sensor is disposed within the flow conduit at a second position, wherein the second sensor is responsive to second disturbances and configured to generate signals characteristic of the second disturbances. The system additionally includes a processor operably coupled to the first and second sensors, wherein the processor is configured to distinguish between signals characteristic of the first and second disturbances.

Abstract: A sensor and method for fabricating a sensor is disclosed that in one embodiment bonds an etched semiconductor substrate wafer to an etched first device wafer comprising a silicon on insulator wafer which is then bonded to a second device wafer comprising a silicon on insulator wafer to create a vented, suspended structure, the flexure of which is sensed by an embedded sensing element to measure differential pressure. In one embodiment, interconnect channels embedded in the sensor facilitate streamlined packaging of the device while accommodating interconnectivity with other devices.

Abstract: A sensor and method for fabricating a sensor is disclosed that in one embodiment bonds an etched semiconductor substrate wafer to an etched device wafer comprising a silicon on insulator wafer to create a suspended structure, the flexure of which is determined by an embedded sensing element to measure absolute pressure. Interconnect channels embedded in the sensor facilitate streamlined packaging of the device while accommodating interconnectivity with other devices.

Abstract: A catheter tip device and methods for manufacturing a catheter tip device are disclosed, the device comprising a transducer module attached to a capsule, wherein the transducer module comprises a carrier including a recessed die-attach area, a transducer die located in the recessed die-attach area, and at least one conductive lead deposited onto the carrier and interconnected to the transducer die. The recessed die-attach area has an outer perimeter greater than the outer perimeter of the transducer die forming a groove between at least one edge of the transducer die and the outer perimeter in which an adhesive agent is located to attach the transducer die to the recessed die-attach area. The methods of manufacturing the catheter tip device involve the use of an array of carriers.

Abstract: A sensor and method for fabricating a sensor is disclosed that in one embodiment bonds an etched semiconductor substrate wafer to an etched first device wafer comprising a silicon on insulator wafer which is then bonded to a second device wafer comprising a silicon on insulator wafer to create a vented, suspended structure, the flexure of which is sensed by an embedded sensing element to measure differential pressure. In one embodiment, interconnect channels embedded in the sensor facilitate streamlined packaging of the device while accommodating interconnectivity with other devices.

Abstract: A sensor and method for fabricating a sensor is disclosed that in one embodiment bonds an etched semiconductor substrate wafer to an etched device wafer comprising a silicon on insulator wafer to create a suspended structure, the flexure of which is determined by an embedded sensing element to measure absolute pressure. Interconnect channels embedded in the sensor facilitate streamlined packaging of the device while accommodating interconnectivity with other devices.

Abstract: A catheter tip device and methods for manufacturing a catheter tip device are disclosed, the device comprising a transducer module attached to a capsule, wherein the transducer module comprises a carrier including a recessed die-attach area, a transducer die located in the recessed die-attach area, and at least one conductive lead deposited onto the carrier and interconnected to the transducer die. The recessed die-attach area has an outer perimeter greater than the outer perimeter of the transducer die forming a groove between at least one edge of the transducer die and the outer perimeter in which an adhesive agent is located to attach the transducer die to the recessed die-attach area. The methods of manufacturing the catheter tip device involve the use of an array of carriers.