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公开(公告)号：US11229749B2
公开(公告)日：2022-01-25
申请号：US16559337
申请日：2019-09-03
发明人： William Biederman , Louis Jung , Sean Frick , Benjamin Collins , Eric Bennett
摘要： A dosage measurement system is adapted to receive a motion from a dosage injection mechanism disposed within a drug injection pen. The dosage measurement system includes a substrate, a sensing capacitor disposed on the substrate, and a lifting tab. The sensing capacitor includes a dielectric layer disposed between a base plate and an adjustable plate. The lifting tab is attached to the adjustable plate and positioned to engage an undulation pattern disposed on a component attached to the dosage injection mechanism. The lifting tab is adapted to physically change a separation distance between the adjustable plate and the base plate in a reciprocal manner in response to the motion of the dosage injection mechanism and engagement with the undulation pattern. A capacitance of the sensing capacitor changes in response to the engagement of the lifting tab with the undulation pattern and the motion of the dosage injection mechanism.
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公开(公告)号：US20200078527A1
公开(公告)日：2020-03-12
申请号：US16559337
申请日：2019-09-03
发明人： William Biederman , Louis Jung , Sean Frick , Benjamin Collins , Eric Bennett
IPC分类号： A61M5/315
摘要： A dosage measurement system is adapted to receive a motion from a dosage injection mechanism disposed within a drug injection pen. The dosage measurement system includes a substrate, a sensing capacitor disposed on the substrate, and a lifting tab. The sensing capacitor includes a dielectric layer disposed between a base plate and an adjustable plate. The lifting tab is attached to the adjustable plate and positioned to engage an undulation pattern disposed on a component attached to the dosage injection mechanism. The lifting tab is adapted to physically change a separation distance between the adjustable plate and the base plate in a reciprocal manner in response to the motion of the dosage injection mechanism and engagement with the undulation pattern. A capacitance of the sensing capacitor changes in response to the engagement of the lifting tab with the undulation pattern and the motion of the dosage injection mechanism.
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