Background and Identification
The Smiths Medical 1884SS is a handheld pulse oximeter made by Smiths Medical. Pulse oximeters are non-invasive devices used to monitor a patient’s oxygen saturation. Smiths Medical is a designer and manufacturer of medical devices for general anesthesia, respiratory care, cardiology, pain management, and other medical areas.
The 1884SS model measures the patient’s pulse rate, pulse strength, and oxygen saturation. It can be used to spot-check these values in hospital or clinical environments. The oximeter can collect long-term data in overnight sleep screening studies. The 1884SS monitor can be used for adult, pediatric, and neonatal patients for spot-checking applications. For sleep screening applications, this monitor can be used for adult and pediatric patients when using the appropriate accessories.
The Smiths Medical 1884SS is not designed for continuous patient monitoring because there are no audible or visible patient alarms. In overnight screening applications, users can print summed data results. This model features three modes of operation: Verification Mode, Data Collection Mode, and Trend Printing Mode. The Verification Mode is intended for spot-checking. The Data Collection Mode allows for long-term data collection in sleep-screening environments. The Trend Printing Mode outputs summarized trend data to the monitor’s built-in printer or to a PC.
Technical Specifications
Equipment Classification:
- Type of Protection Against Electric shock: Internally Powered
- Mode of operation: Continuous
- Degree of Protection Against ingress of Liquids: IPX1, drip-proof
- Degree of Mobility: Portable
- Degree of Protection Against Electric Shock: Type BF
- Safety Requirements: EN60601-1: 1990
Displays, Indicators, & Keys:
- SpO2: LED numeric display, 7.62 mm (0.30 inches) high
- Pulse Rate: LED numeric display, 7.62 mm (0.30 inches) high
- Pulse Strength: Logarithmically scaled 8-segment LED bar graph
- Low Battery Indicator: 1 Segment LED
- Keys:
- On/Off key
- PRINT key
SpO2:
- Range: 0 - 99% Functional SpO2 (1% increments)
- Accuracy: ±2 at 70 - 99% less than 70% is unspecified
- Alarms: None
- Averaging: 4 pulse beat average
- Display Response: The display is to functional saturation.
- Display Update Rate: 1 Hz (SpO2); 60 Hz (pulse strength)
- Calibration: Factory calibrated over the range of 70% to 100% SpO2 using human blood samples to functional saturation. Test methods available upon request. No in-service calibration is required.
- Sensor:
- Red: 660nm, 2.0 mW (typical)
- Infrared: 905 nm, 2.0 - 2.4 mW (typical)
Pulse Rate:
- Range: 30-254 BPM (1 bpm increments)
- Accuracy: ±2% or 2 BPM, which ever is greater
- Averaging: 8-second average
- Display Update Rate: 1 Hz
Printer:
- 1-inch wide paper thermal printer (# 6012)
- 15 characters per line with two dots between symbols
- 5x7 dot characters
Power Requirements:
- Four standard “AA” alkaline cells (IEC Type LR6)
Battery Life:
- Alkaline Cells:
- 2 sleep screening cycles (1 cycle = 10 minutes with display on, 8 hours with display off, 5 minutes printing)
- Intermittent monitoring: 1 min on, 2 min off (= 1 cycle) 80 hours or 1600 cycles
Dimensions:
- Width: 69.85mm (2.75 inches)
- Height: 167.64mm (6.6 inches)
- Depth: 36.322mm (1.43 inches)
- Weight: 369 grams (13 ounces) with batteries
Environmental Specifications:
- Operating Temp.: 0 to 55° C (32 to 131° F)
- Storage Temp.: -40 to +75° C (-40 to +167° F)
- Relative Humidity:
- 10 to 95% (storage), non-condensing
- 15 to 95% (operating), non-condensing