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Method for defining device integrity

IP.com Disclosure Number: IPCOM000241866D
Publication Date: 2015-Jun-05
Document File: 1 page(s) / 30K

Publishing Venue

The IP.com Prior Art Database

Abstract

Transducer integrity test procedures (IOTS) are often based on defining the resonance frequency location. When a device is mounted on a substrate, such as the human skull, the resonance frequency is influenced by the impedance of the substrate, which is typically variable. Being mounted/fixed to a substrate can also make partial failures show up less explicit while taking measurements. Both aspects make it hard to define clear acceptance criteria, to make a clear distinction between resonance peak shifting due to (partial) device failure or due to substrate impedance.

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Problem being addressed:

Transducer integrity test procedures (IOTS) are often based on defining the resonance frequency location. When a device is mounted on a substrate, such as the human skull, the resonance frequency is influenced by the impedance of the substrate, which is typically variable. Being mounted/fixed to a substrate can also make partial failures show up less explicit while taking measurements. Both aspects make it hard to define clear acceptance criteria, to make a clear distinction between resonance peak shifting due to (partial) device failure or due to substrate impedance.

Solution to the problem:

Measure the integrity of the transducer while it is in ISOLATED condition instead of in mounted condition. Applying (pre-mounting) an isolator to the device results in larger delta of the resonance frequency shift in case of device damage as it bypasses the skull impedance factor. Beside the advantage of allowing to perform a more exact integrity measurement, the isolator also provides mechanical protection during the surgical manipulation/ implementation.

Benefits and advantages of the invention:

The invention is required to get clear/distinctive device integrity measurement results allowing correct decision making during surgery: the device is (partially) damaged and needs replacement or not. Beside the above mentioned main benefit, the invention also provides mechanical protection during surgery. In general: reduction of risk of implanting a defect transducer...