The Company's base proprietary technology in the clinical applications of thermal diffusion can be formulated to develop multiple products addressing unmet needs in many clinical areas such as neurosurgical monitoring, organ transplantation, cardiovascular monitoring, reconstructive surgery and oncology diagnosis, among others.
 

The Bowman Perfusion Monitor

Features

• Absolute, real-time continuous perfusion measured from 0 to 200 ml/100g-min. 
• Works with the QFlow 500 Thermal Diffusion Probe (TDP) - a minimally invasive (<1 mm diameter) flexible, interstitial catheter. 
• 6.4-inch TFT display.
• Programmable visual/audio alarm.
• User-friendly interface with five easy-to-use buttons.
• Built in printer.
• IV pole mountable.

The Bowman Perfusion Monitor runs continuously and displays perfusion data from the previous 1-10 days. In the automatic (autopilot) mode, the monitor periodically performs in situ calibration according to a pre-determined set of rules. The rules may be changed for particular situations. Absolute tissue perfusion, as well as tissue temperature, is displayed graphically as a function of time throughout the measurement sequence. Data files may also be reviewed, and the monitor screens can be printed onsite using the built-in printer. 

QFlow 500 Thermal Diffusion Probe (TDP) - Bowman Perfusion Monitor model 500

The minimally invasive, 19-gauge QFlow 500 Thermal Diffusion Probe (TDP), connected to the Bowman Perfusion Monitor via an umbilical cord, quantifies tissue perfusion in absolute units continuously in real time and in small volumes of tissue (30-100 µl). The QFlow 500 Probe, which is a flexible, medical grade catheter, is inserted into the target tissue using the appropriate surgical hardware to measure focal temperature, and tissue perfusion. The probe can be left inserted in the target tissue for up to 10 days.* 

Features

• Works with the Bowman Perfusion Monitor 
• Biocompatible, flexible catheter has a <1 mm (19 gauge) diameter 

Technology

The QFlow 500 Probe (<1 mm diameter) contains a thermistor embedded at the tip of a flexible catheter. The surface of the thermistor is controlled to a small increment (~2 °C) above the tissue baseline temperature. The power dissipated in the thermistor provides a measure of the ability of the tissue to carry heat by both thermal conduction within the tissue and by thermal convection due to tissue blood flow. A passive, proximal thermistor is used to monitor and compensate for temporal tissue baseline temperature changes. 

Requirements

Bowman Perfusion Monitor

Specifications

• Catheter diameter: 0.94 mm +/- 0.05 
• Catheter length: 60 cm