Needle Penetration Detection Method and Device for Refillable and Implantable Drug Delivery Systems

摘要

A refillable and implantable infusion apparatus and method that includes a needle penetration detector that detects and indications the position of a needle relative to a septum of a drug reservoir of the implantable infusion apparatus. With the needle position data, medical professionals may better ensure they are injecting drugs into the drug reservoir, thus, improving patient safety.

主权项

1. A method for detecting a needle penetration into a septum of a refillable implantable drug delivery system, comprising:
obtaining a baseline measurement of inductance of a needle penetration detector within the septum of a refillable implantable drug delivery system prior to a needle penetration of a patient; obtaining a measurement of the inductance of the needle penetration detector following a needle penetration of the patient; comparing the measurement of inductance to the baseline measurement of inductance; determining whether the difference between the baseline measurement of inductance and the measurement of inductance satisfies a threshold; indicating the needle did not penetrate the septum in response to determining that the difference between the baseline measurement and the measurement of inductance not satisfy the threshold; and indicating the needle did penetrate the septum in response to determining that the difference between the baseline measurement and the measurement of inductance satisfies the threshold.