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• Not all c

artridges are available in all regions. Check with your local representave for

availability in specic markets.

Contact pads

The contact pads conduct the signals generated by the sensors to the instrument. In order for these to

funcon properly, care must be exercised not to contaminate the contact pads during cartridge handling.

Sensors

The sensors are electrodes microfabricated on silicon chips located within the cartridge. Electrodes have

chemically sensive coangs such as ion-selecve membranes and enzyme layers. Each sensor is

connected to a contact pad by a signal line. The sensors respond to the calibrant soluon and the sample

by producing measurable signals related to analyte concentraon.

Sensor Channel

The sensor channel directs the sample from the sample chamber to the sensors. An extension of this

channel becomes a waste chamber to receive the calibrant soluon as it is displaced by the sample.

Air Chamber

An air chamber is located in blood gas/electrolyte/chemistry/hematocrit cartridges between the sample

chamber and sensor channel. This creates an air segment between the calibrant soluon, if applicable,

and the sample to prevent the two from mixing. The size of the air segment is monitored by the

instrument.

Calibrant Pack

During the rst part of the tesng cycle, the calibrant soluon is automacally released from the foil

pack and is posioned over the sensors. The foil pack may be pierced with improper cartridge handling.

If uid is released prematurely, a Quality Check Failure may occur.

Fill To

The blue arrow on the white label cartridge and the clear arrow on the blue cover cartridge is intended

to help the operator ll the cartridge correctly. Samples that fall above or below the indicated level may

result in a Quality Check Failure.

Sample Chamber

The sample chamber includes the sample well and the channel leading from the well up to the ll mark.

When lled, the sample chamber contains sucient sample for tesng. Sample volume and placement

are monitored by the instrument.

Bladder

The bladder is connected to the sample well. The instrument presses on the bladder to displace calibrant

soluon from the sensors, to move the sample from the sample chamber to the sensors, or to mix

sample and reagents.

Sample Well

The area on the cartridge where the sample is introduced into the sample chamber.

i-STAT Alinity — System Operaons Manual Art: 745524-01 Rev. I Rev. Date: 02-Nov-2022

Abbott i-STAT Alinity User Manual

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