Wire-assembly apparatus for invasive biosensors
In some aspects, an apparatus for a biosensor includes a sensor wire and a rigid member. The rigid member may be coupled to the sensor wire and include a contact surface. The contact surface may be sized to enable a suction head of a robotic placement device to create a vacuum seal on the contact surface for lifting the sensor wire and rigid member.
1 . A wearable monitoring device, comprising:
a printed circuit board disposed in a housing, the housing having a planar surface for positioning the wearable monitoring device on a patient's skin;
a sensor including one or more electrodes electrically coupled, at a connection point on the printed circuit board, to circuitry disposed on the printed circuit board, the sensor having a distal end that is insertable into the patient's skin; and
a rigid member coupled to the printed circuit board and coupled to the sensor, the rigid member being positioned on the printed circuit board such that the connection point is between a section of the printed circuit board and a coupling surface of the rigid member, wherein the coupling surface comprises non-conductive adhesive for coupling the rigid member to the printed circuit board.
2 . The wearable monitoring device of claim 1 , wherein the rigid member comprises a non-conductive material to electrically isolate the sensor at the connection point.
3 . The wearable monitoring device of claim 1 , further including a potting material disposed on the rigid member to create a moisture barrier proximate to the connection point.
4 . The wearable monitoring device of claim 1 , wherein the rigid member is coupled to the printed circuit board by a pressure-sensitive adhesive.
5 . The wearable monitoring device of claim 1 , wherein the rigid member has a quadrilateral shape with at least one side having a length substantially between 1 millimeter and 10 millimeters.
6 . The wearable monitoring device of claim 1 , wherein the sensor includes a length that is at least twice as long as a length of the rigid member.
7 . The wearable monitoring device of claim 1 , wherein the one or more electrodes includes a first electrode comprising a platinum material and a second electrode comprising a silver/silver-chloride material.
8 . The wearable monitoring device of claim 1 , further comprising a glucose oxidase material disposed on the distal end of the sensor to react to glucose present within interstitial fluid beneath the patient's skin and enable the circuitry to determine an amount of the glucose present within the interstitial fluid.