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Clog Detection in Ultrasonic Device Providing Suction, by Monitoring Ultrasonic System Resonant Frequency

IP.com Disclosure Number: IPCOM000249113D
Publication Date: 2017-Feb-07
Document File: 1 page(s) / 199K

Publishing Venue

The IP.com Prior Art Database

Abstract

During surgical procedures, suction is often used to clear the field to allow better visibility of the tissue. It is possible that the instrumentation or tubing that provides the suction can become clogged with tissue and reduce or completely stop suction. The following concept is provided to provide an effective means of detecting clogging events, so that they can be addressed promptly.

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Clog Detection in Ultrasonic Device Providing Suction, by Monitoring Ultrasonic System Resonant

Frequency

SUMMARY

During surgical procedures, suction is often used to clear the field to allow better visibility of the tissue.

It is possible that the instrumentation or tubing that provides the suction can become clogged with

tissue and reduce or completely stop suction. The following concept is provided to provide an effective

means of detecting clogging events, so that they can be addressed promptly.

DESCRIPTION

A system is defined with a medical device utilizing ultrasonic technology and an energy system capable

of driving ultrasonic energy and detecting ultrasonic resonant frequency and impedance. It is assumed

that suction is provided and that the fluid suction path is through the Inside diameter of an ultrasonic

resonating member. Refer to illustration below.

Fluid moving through the ultrasonic member tends to cool the ultrasonic member and maintain a stable

resonant frequency and impedance. Variations in temperature of ultrasonic resonating components

result is variations in the resonant frequency and impedance.

When a clog develops within the lumen of the suction apparatus, the fluid flow is slowed or stopped.

Normal cooling due to fluid flow is reduced and the fluid in the lumen begins to heat up due to

continued ultrasonic vibration of the ultrasonic member. The ultrasonic member will absorb this heat via

conduction and result in a shift of ultrasonic resonant frequen...