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Injection device with a capacitive proximity sensor

  • US 10,130,763 B2
  • Filed: 03/17/2015
  • Issued: 11/20/2018
  • Est. Priority Date: 01/31/2006
  • Status: Active Grant
First Claim
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1. Injection device for injecting medication to a patient, comprising:

  • a surface having a through hole for passage of a needle; and

    a capacitive proximity sensor configured to detect proximity or contact of human skin to/with said surface, wherein said capacitive proximity sensor includes a first electrode, a second electrode defining a capacitance with said first electrode and a circuit configured to detect a change in said capacitance due to the proximity of human skin to the sensor, and in that the second electrode has an elongate shape, is disposed within a U-shaped recess defined by the first electrode and is substantially parallel to a straight side of the first electrode formed by the U-shaped recess.

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