Dinamap Pro 100V2 Manual de Serviço descarregar pdf (Página 46)

3-6 PRO 100-400 V2 Patient Monitor Service Manual Revision A

2009829-001

Theory of Operation: 3.2 OVERALL PRINCIPLES OF OPERATION

Main Board calculates the pulse rate/Mean Arterial Pressure (MAP).

The results are then displayed on the front panel (seven segment

Light Emitting Diodes (LEDs) and sent to the printer.

The Pneumatic Valve/Manifold (PVM) device has an overpressure

sensor built-in to protect against over-inflation. If an over-inflation

condition occurs, the OVERPRESSURE signal is routed to the PVM

to release the air pressure. The Main Board also, generates an alarm

condition with the speaker sounding and a message in the Liquid

Crystal Display (LCD).

3.2.2 Temperature (Model 200 and 400)

The PRO Monitor uses Alaris Turbo Temp technology to measure

patient temperature. The Turbo Temp probe contains a heating

element that pre-heats the probe to reduce determination time. The

heating function is controlled by the Main Board. The Turbo Temp

probe also contains a thermistor that indicates the temperature.

When the probe is attached to the temperature connector and patient,

the signal generated by the thermistor is routed to the Main Board.

The Main Board converts the thermistor signal along with status

information (i.e ORAL or RECTAL probe indicators) to a DIGITAL

signal. The Main Board then processes the DIGITAL signal and

displays the patient temperature on the UI Board and printer in

Celsius or Fahrenheit.

3.2.3 SPO2 (Model 300 and 400)

The SPO2 probe has a built-in sensor. When the SPO2 sensor is

attached to the SPO2 connector and patient, the probe senses the

heart rate and oxygen saturation. These analog signals are routed to

the SPO2 PWA. The analog signals are analyzed on the SPO2 PWA.

The results are digitized and sent to the Main Board via opto

couplers. The couplers provide for patient isolation as well as serial

data interface. The Main Board processes the data and routes it to

the appropriate displays and/or printer.

A reset signal to the SPO2 PWA is also provided so that the power up

sequencing is corrected. If the SPO2 circuit quits communicating to

the Main Board, the Main Board will attempt to reset the SPO2 PWA.

3.2.4 Host Communication Port

The Host Comm Port is used to interface the Monitor with other

electronic devices (a central nurse’s station or remote alarm device.)

Signals can be sent to the Monitor to initiate blood pressure

determinations and other functions. Patient data can also be retrieved

through this port. For further information, reference the DINAMAP

PRO 100-400 Series Host Communication manual.

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