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Choice Medical MD300I Handheld Pulse Oximeter Introduction

Choice Medical MD300I Handheld Pulse Oximeter Introduction

Brief Introduction

Thank you for purchasing the handheld pulse oximeter for SpO2 and Pulse Rate (PR) measurement. The pulse oximeter features PR tone modulation, data storage and data transmission capabilities. Please read the operator's manual carefully before using this instrument.

Notice: The illustrations used in this manual may differ slightly from the appearance of the actual product.

Intended use: The purpose and function of the handheld pulse oximeter is to indicate, measure, and display the functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate for adults and pediatric patients in hospital, ambulatory, home, and EMS (emergency medical service) environments. The pulse oximeter is intended for spot-checking these levels and not indicated for continuous monitoring. It can assist the clinician diagnostically by quickly displaying the patient�s %SpO2 and pulse rate and can additionally store 72 hours of data.

Measurement Principle

The principle of pulse oximetry is based on the red and infrared (IR) light absorption of oxygenated and deoxygenated hemoglobin present in the circulating blood. Oxygenated hemoglobin absorbs more IR and allows more red light to pass through. Deoxygenated hemoglobin conversely absorbs more red light and allows IR light to pass through. The detector probe is placed on the finger. The probe contains two light emitting diodes (LED), one in the visible red spectrum (660nm) and one in the IR spectrum (940 nm). The beams of light from this probe pass through the tissues and some light is absorbed by the blood and soft tissues depending on hemoglobin concentration. The amount of light absorption at each light frequency is dependent on the degree of oxygenation of hemoglobin within the tissues.

The microprocessor can select out the absorbance of the pulsatile fraction of blood, i.e. that due to arterial blood, from constant absorbance due to non-pulsatile venous or capillary blood and other tissue pigments

oximeter operation principle

Diagram of Operation Principle

  1. Red and Infrared-ray Emitter Diode
  2. Red and Infrared-ray Receptor Diode


Standard accessories:

  • Operator's manual
  • Finger sensor: compatible with BCI
  • Two AA-Size Alkaline batteries

Optional accessories:

  • Finger sensor for pediatric and infant: compatible with BCI (Pediatric 15-45 Kg, Infant 3-15 Kg)
  • Finger sensor for neonate: compatible with BCI (Neonate<3kg)
  • Software license
  • MedView software CD (optional)
  • Data cable (with software)

Confirm that the items listed are packed with the pulse oximeter. If any item on this list is missing or damaged, contact your distributor. Contact the carrier immediately if the shipping carton is damaged.

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