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Implantable Temperature Probe having Pull Tab

IP.com Disclosure Number: IPCOM000081515D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Ellenwood, E: AUTHOR [+2]

Abstract

Standard small-sized thermistor temperature probes may be modified for implantation in human or animal tissue to facilitate the monitoring of internal body temperatures.

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Implantable Temperature Probe having Pull Tab

Standard small-sized thermistor temperature probes may be modified for implantation in human or animal tissue to facilitate the monitoring of internal body temperatures.

About 14 inches of clear, implantable vinyl tubing is cut so as to fit snugly over the thermistor probe. About one inch of one end of the tubing is heated to a temperature near its melting point. This end is then sealed, and the air is evacuated from it until it cools, so as to collapse the heated portion about the probe. The resultant seal is capable of withstanding about 300 mmHg pressure without leakage. The collapsed end is trimmed to extend about 1/2 inch beyond the uncollapsed portion of the tubing. The outer insulation and the tip potting are stripped from the thermistor probe, and the exposed probe portions are covered with the prepared vinyl tubing. The tubing extends over about 1/2 inch of the unremoved outer insulation of the probe, and is sealed thereto.

The collapsed portion of the vinyl tubing serves two purposes. First, it seals the thermistor from any outside fluids. Secondly, it serves as a pull tab to attach a hemostat for pulling the probe through a small puncture to the desired monitoring location. A simple skin stitch tied around the probe holds it in place for long-term monitoring. The probe may be removed by cutting the stitch and pulling the probe out. Such probes may be resterilized and used repeatedly.

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