Sensor comprising an interconnect and an interventional medical device using the same
A sensor has a sensor element ( 5 ) with two opposite sides ( 11, 9 ) and an interconnect ( 7 ) with first and second terminal segments ( 13 B, 13 F) interconnected by an intermediate segment ( 42 ). The first terminal segment ( 13 F) is positioned against a first side ( 11 ) of the sensor element and comprises a first contact terminal ( 50 ). The second terminal segment ( 13 B) is positioned against the second side ( 9 ) of the two opposite sides of the sensor element and comprises a second contact terminal ( 52 ) on a surface facing the second side ( 11 ). There are third and fourth, external, contact terminals ( 54, 56 ). The interconnect provided electrical connections between the first and fourth contact terminals ( 50, 56 ) and between the second and third contact terminals ( 52, 54 ).
1 . A sensor, comprising:
a sensor element with first side and second side opposite the first side; and
an interconnect comprising a flexible carrier that is electrically insulating, wherein the interconnect comprises first and second terminal segments interconnected by an intermediate segment,
wherein the first terminal segment is positioned against the first side of the sensor element and comprises a first contact terminal on a surface facing the first side,
wherein the second terminal segment is positioned against the second side of the sensor element and comprises a second contact terminal on a surface facing the second side,
wherein the interconnect further comprises third and fourth external contact terminals, and
wherein the interconnect further comprises a first internal electrical connection within the flexible carrier which connects the first contact terminal and the fourth contact terminal and a second internal electrical connection within the flexible carrier which connects the second contact terminal and the third external contact terminal.
2 . The sensor of claim 1 , wherein the third and fourth external contact terminals are on the second terminal segment, on the opposite side of the flexible carrier to the second contact terminal.
3 . The sensor of claim 1 , wherein the third and fourth external contact terminals are on a third terminal segment of the interconnect, the third terminal segment being interconnected to the second terminal segment by a second intermediate segment.
4 . The sensor of claim 3 , wherein the third and fourth external contact terminals are on the same side of the flexible carrier as the second contact terminal.
5 . The sensor of claim 3 , wherein:
the second terminal segment is connected to a first base unit; and/or the third terminal segment is connected to a second base unit.
6 . The sensor of claim 5 , wherein:
the first base unit is a de-matching or attenuating backing layer for the sensor element; and/or
the first or second base unit comprises active electronic components.
7 . The sensor of claim 5 , wherein the second intermediate segment extends around an outer edge of the first and/or second base unit.
8 . The sensor of claim 7 comprising first and second base units, wherein the second intermediate segment extends around an outer edge of the first base unit and the second base unit extends at 90 degrees to the first base unit.
9 . The sensor of claim 1 , further comprising a first wire connected to the third external contact terminal and a second wire connected to the fourth external contact terminal.
10 . The sensor of claim 9 , wherein the first and second wires each have ends which are connected to the third and fourth external contact terminals:
parallel to a plane in which the third and fourth external contact terminals extend; or
perpendicular to the plane in which the third and fourth external contact terminals extend.
11 . The sensor of claim 1 , wherein the intermediate segment of the flexible carrier is located adjacent to a lateral outer side of the sensor element and the first and second terminal segments are folded over the first side and the second side of the sensor element.
12 . The sensor of claim 1 , wherein the sensor element comprises a central opening, the intermediate segment is bent relative to the second terminal segment, the intermediate segment of the flexible carrier passes through the central opening, and the first terminal segment is folded over the first side of the sensor element.
13 . The sensor of claim 1 , wherein the sensor element is an ultrasound sensor element.
14 . An interventional medical device, comprising:
a sensor according to claim 1 ; and
an elongate body,
wherein the sensor is mounted at a distal end of the elongate body.
15 . A method of manufacturing a sensor, comprising:
providing a sensor element with two opposite sides;
providing an interconnect comprising a flexible carrier that is electrically insulating, wherein the flexible carrier comprises first and second terminal segments interconnected by an intermediate segment;
bending the interconnect such that:
the first terminal segment is against a first side of the two opposite sides of the sensor element with a first contact terminal facing the first side; and
the second terminal segment is against a second side of the two opposite sides of the sensor element with a second contact terminal facing the second side; and
using the interconnect to provide a first internal electrical connection within the flexible carrier which connects the first contact terminal to a fourth external contact terminal and to provide a second internal electrical connection within the flexible carrier which connects the second contact terminal to a third external contact terminal.