97th DOG Annual Meeting 1999

P140

DEVELOPMENT OF A MEASURING UNIT TO MONITOR TEMPERATURE DURING PHACOEMULSIFICATION

S. Schumacher, J. M. Heisler, H. Wirt, D. von Domarus

We designed a new measuring system to measure and monitor temperature continuously during phacoemulsification. The technical details are the following.

Methods: The core of the system is a new measuring probe with a tip of 0.5 millimeters in diameter, which is connected to a personal computer via a transducer. The battery operated transducer amplifies the signal coming from the probe and, by using two seperated circuits, it prevents voltage from passing over to the patient. A DOS based software registers, saves and documents the measured values.

Results: Changes of temperature in the anterior chamber can be registered reliably during phacoemulsification. The system allows us to show distinct differences between pulsemode and continuous ultrasonic output. Furthermore the design of the tip allows measurements in different compartiments of the anterior chamber. Our surgeons did not encounter any difficulties to handle the probe as an usual surgical instrument.

Conclusions: The new probe proved to be a practical device to monitor temperature in the anterior chamber during phacoemulsification. We have no doubt, that this new monitoring device can be used in many surgical procedures where assessment of temperature is desirable.

Augenklinik des AK Barmbek, Hamburg


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