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Cardiac Output Computer Cardiomax III

Cardiac Output Computer Cardiomax III
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General Information

The Cardiomax-III Thermodilution Cardiac Output Computer doubles as a physiological data acquisition system. The new thermodilution cardiac computer interfaces directly to a Pentium desktop or laptop computer via a very fast RS-232 link. It is intended to be used on a variety of lab animals from mice to horses. In addition to measuring cardiac output and associated parameters (SV, HR), the Cardiomax-III can be used to measure, display, and log ECG (EKG) with its own low level amplifier and two (2) blood pressures (DP, MP, SP, dp/dt). Storage of all parameter data is provided in .CSV format for easy import into a variety of analysis programs. The thermo-dilution curve image can also be saved. The Cardiomax-III can use a variety of thermistor catheters as well as Columbus Instruments' thermocouple microprobes. The Cardiomax-III's special design makes it resistant to external radio signal interference and its small size (35.5 x 29 x 10 cm) makes it very convenient in a crowded laboratory environment.

Features / Specifications

Cardiac Output in animals from mice to horses
Monitors heart rate with EKG or blood pressure sensors.
Calculates stroke volume
Measures and displays two (2) systolic, diastolic and mean pressures, dp/dt.
Equipped with EKG amplifier. Monitors, displays, and stores EKG curve.
Adaptable to most thermistor catheters
Can be equipped with Columbus Instruments' Microprobes for cardiac output measurements in mice and rats
Can trigger Columbus Instruments' Auto-Injectors for semi-automatic measurements.
Remote foot switch can initiate a measurement cycle.
Functions as a physiological data logger, storing HR, BT, DP, MP, SP in programmable intervals.

Isolated inputs

(All isolated inputs have over 1500v of low leakage isolation to the chassis and computer connections.)

Catheter Input Type: "T" thermocouple or 14k - 7k ohm thermistor
Range: 0 to 50°C.

Injectate Input Type: "T" thermocouple or 14k - 7k ohm thermistor
Range: 0 to 50°C

ECG Input Three lead: LA, RA, RL
Range: 50uV to 2mV peak to peak

Blood Pressure Inputs (2) (-100 to + 300 mmHg range)
Resolution: 1 mmHg,
Accuracy: ±0.5% full scale, ±1mmHg
Transducer sensitivity: 5 uV/V/mmHg
Transducer nominal impedance: 300 ohm
Transducer Excitation: 4 volts

Non-isolated connections

High Level ECG Input: Two ranges: ±0.25 volt, ±1.25volt
Foot switch input for starting a C.O. measurement cycle remotely
Injector trigger output for automated C.O. injection
Computer RS-232 serial port connection: 19200 baud

Power requirements 12 watts
120VAC, 60Hz; 240VAC, 50Hz (Factory Selected)
Fuse: 1/2 ampere, type MDA

Dimensions: Size: 14" x 11.5" x 4" (35.5 x 29 x 10 cm)
Weight: 6 lbs. (2.72 kg)

Ordering Information

9800TCR Cardiomax III-TCR Thermodilution Cardiac Output
For mice, rats and large subjects
9800TC Cardiomax III-TC for Thermistor Catheters ONLY
For larger animals only. Not suitable for rodents
9800R Cardiomax III-R for Micro-Probes ONLY
For small animals only. Requires use of CI Microprobe(s)
9802 Cardiomax III remote foot switch
9805 Cardiomax III replacement Injectate Probe (RTD)
9806 Cardiomax III replacement Injectate Probe (thermocouple)

References Cited

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