Nellcor n-65 manual

Displays the measured percent of oxygen saturation. Displays the measured pulse beats per minute. Page Controls Symbols, Controls, Displays, and Indicators Controls This section describes the controls on the front panel of the monitor. The controls are activated by pressing the button that corresponds to that control.

For example, press the Alarm Silence button to control the audible alarm. Page 23 Symbols, Controls, Displays, and Indicators Press and hold the Alarm Silence button for three seconds to display the Alarm Silence Duration menu, which allows you to adjust the alarm silence interval from 30, 60, 90, or seconds, or to OFF alarms disabled.

Page 24 Symbols, Controls, Displays, and Indicators Alarms and alarm icons are enabled when parameters are set and display in the event of an alarm condition. There are various matrices within the signal processing algorithm. Some of these are used to assess the severity of conditions presented to the monitor in SpO and pulse rate measurements on a patient.

Page 27 Symbols, Controls, Displays, and Indicators Selected display elements, such as, icons or numerals, may flash. There are three flash rates. See Table 1. Displays before initial acquisition of a pulse signal and throughout prolonged challenging monitoring conditions. The Indicator flashes throughout a loss-of-pulse signal. Data In-Sensor indicator.

Displays when the sensor contains patient alarm events. The indicator flashes when the sensor memory is full. Displays when the monitor alarm limit values, or pulse rate values, are being adjusted. Adjust Volume mode indicator. Displays when the monitor alarm volume levels are being adjusted. Sensor Off Patient indicator. Displays when the monitor detects the sensor has come off the patient. Page 31 Failure to do so could result in an inaudible alarm tone. Do not attach any cable that is intended for computer use to the O sensor port.

You may use an extension cable to provide more distance between the monitor and the sensor. Use only the DEC-4 extension cable available from Nellcor. Battery Power The O N uses batteries to power the monitor. A new set of batteries provides between 15 to 40 hours of operation depending on the battery type. Page Critical Battery Indication Battery Operation Caution: 15 minute indicator for remaining battery operating time is approximate and is based on Alkaline AA batteries.

Remaining operating time may be different for other types of batteries. Caution: Periodically check the battery for corrosion. If the O N is to be stored for three months or longer, remove the batteries from the monitor before storage. Turn off the power. Pull the battery compartment latch downward toward the bottom of the monitor, and remove the battery access door. Install four AA size batteries as shown in Figure 1.

Page 40 Battery Operation 4. Replace the battery access door. Do not use the N in the presence of flammable anesthetics mixed with air, oxygen, or nitrous oxide. The parameters may be set on an individual basis by the clinician.

Note: This section contains detailed information on setting parameters. The backlight is on while all numbers and icons are shown. The display goes blank for one second.

The software version number appears for 3 seconds as a three digit number in the right number field and two dashes in the left number field. Note: The software version is an example. Check the monitor for the software version installed. If the monitor detects a problem, an error tone sounds and an error code Er and the error number displays.

See Troubleshooting on page Upon successful completion of POST, the monitor sounds a one-second tone to indicate it has passed the test. For optimal performance allow the monitor to search and lock onto a pulse for approximately 10 seconds.

The Pulse Amplitude blip bar increments or decrements as a relative indicator of the current volume. To adjust the pulse beep volume using the menu structure: 1. From the main monitoring screen, press the Menu button five times until the pulse beep volume level is shown and the monitor sounds.

The Pulse Amplitude blip bar increments or decrements as a relative indicator of the current alarm volume. From the main monitor screen, press the Menu button six times until the alarm volume screen appears. Press the Up Arrow or Down Arrow button to increase or decrease alarm volume. Press the Menu button two times to set the alarm level and return to the monitor display screen.

From the main monitor screen, press the Power button to turn the monitor off. Press the Power button to turn the monitor on. Press the Menu button to set the hours and show the minutes set display. The minutes display 45 flashes. Press the Up Arrow button or the Down Arrow button until the desired minutes appear. Press the Menu button to set the minutes and show the day set display.

Press the Up Arrow button or the Down Arrow button until the desired day is shown. Press the Menu button to set the day and show the month set display. The month 7 flashes. Press the Up Arrow button or the Down Arrow button until the desired month is shown.

Press the Menu button to set the month and display the year set display. The year will flash. Press the Up Arrow button or the Down Arrow button until the desired year is shown. A low battery low-priority alarm cannot be silenced. Note: When the monitor times-out in 30 seconds, the parameter is set and the monitor returns to the normal mode.

Press the Up Arrow button or the Down Arrow button until the desired alarm silence duration is shown. Press the Alarm Silence button to set the shown alarm silence duration and return to normal operation. Press the Alarm Silence button to set the alarm silence duration to OFF and return to normal operation.

The Alarm Silence indicator flashes and an audible reminder sounds every three minutes while the alarm silence duration is set to OFF. From the main monitor screen, press the Menu button once. The SpO lower alarm limit displays. Press the Up Arrow or Down Arrow buttons to increase or decrease the lower limit. Press the Menu button to set the limit value. The BPM upper alarm limit displays.

The pulse rate upper alarm limit range is 31 to Press the Up Arrow or Down Arrow button to increase or decrease the upper pulse rate limit. Press the Menu button to confirm the alarm limit settings. Press the Menu button until you return to normal operation.

The Alarm Limit Changed indicator displays anytime an alarm limit changes. From the main monitor screen, press the Data button to capture a record of the patient data snap shot. The captured data displays. The number 1 in the SpO field is the identification ID number of captured snap-shots. If sensor-event data are stored in sensor memory, the Data In-Sensor icon shows on the print data display.

If both types of data are stored, both icons show. Align the printer and the monitor. Orient the printer and monitor as shown in Figure 3. The alignment of the infrared ports of the printer and the monitor must not exceed two feet and must not be closer than six inches 15 cm.

From the main monitor screen, press the Menu button seven times. The print display is shown. Press the Data button to start printing. During printing, the stored snap-shot number displays for each snap-shot.

The O N does not support viewing sensor event records, but does support printing sensor event records. Do not use an O sensor with exposed optical components. In the table, find the condition that describes the problem and follow the corrective actions in the order presented. Page 46 Troubleshooting If an error code is shown on the monitor front panel display, see Figure 3. Turn the monitor off, wait ten seconds, then turn it back on.

This clears recoverable errors encountered by the monitor. If the error code persists, refer to Table 5: Error Codes, on page 43 for an explanation of the error code.

Interface PCB Replacement on page If this does not fix the problem, return the monitor to Nellcor. One or more keys on the front panel keypad does not work. Page 49 Troubleshooting Table 5 provides a list of error codes for the monitor. Replace SpO board. Communication failure with real time clock. Replace UI board. Real time clock oscillator control problem.

Real time clock failed timing test. Erroneous key press detected at start. Fatal system error reading memory. Return monitor for repair. Fatal software error.

To remove the batteries: 1. Remove the battery cover. Pull the battery cover latch downward toward the bottom of the monitor case and lift the battery cover. Page 55 Disassembly Guide 2. Remove the four screws holding the monitor front and rear cases together.

See Figure 5, items 1 through 4. Figure 5: Monitor Case Screws Caution: A flex cable runs between the monitor front and rear case assemblies. Use care when separating the cases. Do not apply stress to the flex cable. See Figure 6 and Figure 7. Page 57 Disassembly Guide 3.

See 8. Page 58 Disassembly Guide 5. Place the defective PCB to the side. When both rows of the connectors are aligned, gently press the PCBs together. See Figure Page 59 Disassembly Guide Note: The longer screws install at the top of the case. See Figure 12, items 1 and 4. Align the front and rear cases. Figure Installing The Case Screws 9. Install the four screws Figure 12, items 1 through 4. Perform the performance verification tests before placing the monitor into service.

See Pulse Oximetry Functional Tests on page Front Case Assembly Replacement The front case assembly contains the keypad. To replace the front case assembly: 1. Remove the batteries from the monitor. See Prior to Disassembly on page Page 61 Disassembly Guide 5. Lock the ribbon cable connector. Place the front and rear cases together and install the four screws.

See Figure 16, items 1 through 4. Page 62 Disassembly Guide 7. Install the batteries and battery cover as shown in Figure Separate the front and rear case assemblies. See Separating the Front and Back Cases on page Caution: The battery connectors spring assemblies at the bottom of the SpO PCB are held in slots in the battery compartment.

Page 64 Disassembly Guide 5. Ensure that the battery springs slip into place. See Figure 20, items 1 and 4. Install the batteries and battery cover.

Figure Battery Installation 8. Battery Compartment Door Replacement To replace the battery compartment door: 1. Page Spare Parts Nellcor's Technical Services provides technical assistance information and replacement parts. To obtain replacement parts, contact Nellcor's Technical Services or your local Nellcor representative. Refer to parts by the part names and part numbers. Page 69 Spare Parts Figure 23 shows the monitor exploded view with numbers relating to the spare parts list.

Unless otherwise instructed by Nellcor's Technical Services Department, it is not necessary to return the O sensor or other accessory items with the monitor.

Pack the monitor in its original shipping carton. Page 72 Packing for Shipment To repackage the monitor in the original carton: 1. Place the monitor in original packaging. Figure Packing 2. Place in shipping carton and seal carton with packing tape. Label carton with shipping address, return address, and RGA number.

To repackage the monitor in a different carton: 1. Place the monitor in a plastic bag. Locate a corrugated cardboard shipping carton with a bursting strength of at least pounds per square inch psi. The total optical output power of the sensor LEDs is less than 15 mW.

Atmospheric Pressure 70 kPa to kPa Hg to Page 82 Specifications The O N is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or user of the monitor can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment transmitters and the monitor as recommended below, according to the maximum output of the communications equipment.

Page 83 Specifications Table 7: Electronic Emissions The monitor is intended for use in the electromagnetic environment specified below. The customer or user of the monitor should assure that it is used in such an environment. Page 84 Specifications Table 8: Electromagnetic Immunity The monitor is intended for use in the electromagnetic environment specified below.

Page 85 Specifications Table 8: Electromagnetic Immunity Continued The monitor is intended for use in the electromagnetic environment specified below.

Field strengths from fixed RF transmitters, as determined by an electromagnetic site survey , should Page 86 Specifications N Service Manual Page Technical Discussion T e c h n i c a l D i s c u s s i o n Oximetry Overview The O N uses pulse oximetry to measure functional oxygen saturation in the blood.

Pulse oximetry works by applying an O sensor to a pulsating arteriolar vascular bed, such as a finger or toe. Page Functional Versus Fractional Saturation Technical Discussion Functional versus Fractional Saturation This pulse oximeter measures functional saturation -- oxygenated hemoglobin expressed as a percentage of the hemoglobin that can transport oxygen.

It does not detect significant amounts of dysfunctional hemoglobin, such as carboxyhemoglobin or methemoglobin. In contrast, hemoximeters such as the IL report fractional saturation -- oxygenated hemoglobin expressed as a percentage of all measured hemoglobin, including measured dysfunctional hemoglobins.

These O sensors can be identified by the deep blue color of their plug. All O sensors contain a memory chip carrying information about Schematic diagrams and are provided at the end of this section. Patient Interface The patient interface receives signals from the O sensor. The patient interface receives control signals from the CPU. These buttons allow the user to setup and control of the monitor.

The LCD also displays icons indicating the status and functions of the monitor. Page 94 Blank Page