Secondhand Plusmed PM-KN01 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 01.12.2025

Plusmed Oxygen Concentrator Analysis Report

Device Identification

The product examined in the visuals is a medical device, an oxygen concentrator, which separates ambient air to provide high-purity oxygen for patients suffering from respiratory distress. Thanks to its wheeled structure, the device is a portable model suitable for home or clinical use.

Brand and Model

As a result of detailed examination, the brand logo has been clearly identified on the lower right corner of the device’s front panel:

• Brand: Plusmed
• Product Type: Oxygen Concentrator

The overall design language of the device, the layout of the control panel, and the 5-liter flow meter structure belong to Plusmed’s standard home-use oxygen device series. Although a specific alphanumeric model code (e.g., PM-5) is not present on the front panel of the device, the brand and product type are 100% certain with visual evidence.

General Condition and State

Upon examining the device’s external cosmetics, it has been observed to be in a “worn” and “used” condition. Significant wear and tear on its casing due to use and time are present.

Physical Deformations and External Casing Analysis

The following deformations have been detected on the product’s plastic casing:

• Color Change (Yellowing): While the device’s original color was probably a lighter white/cream tone, significant yellowing has occurred due to exposure to sunlight or material aging. This situation indicates that the device has been in use for a long time or has been stored on a shelf.
• Deep Scratches: On the lower right part of the front panel, immediately next to and above the “plusmed” logo, there are noticeable, deep, and dark-colored scratches (crack-like but superficial deformation).
• Stains: Black scuff marks and dirt stains are visible on the device’s front left side and next to the flow meter.
• Missing Water Container: The slot where the humidifier bottle should be attached on the front of the device is empty. The black Velcro strap for holding the bottle is present, but the water container is missing.

Screen Analysis and Operating Data

In the second visual, the device’s LCD screen is seen to be active and operational. The blue backlight on the screen is problem-free. The technical data on the screen is as follows:

• S.Times : 0000007: The number of times the device’s switch has been turned on (Switch Times) is recorded as 7.
• O.P. MPa : 0.058: The operating pressure (Operating Pressure) is 0.058 MPa, which is a normal operating value.
• O.Time : 0000:00: Refers to the operating time in the current session.
• Acc.Time : 0000001: Indicates that the total accumulated operating time (Accumulated Time) is only “1” unit (likely 1 hour or 1 cycle).

Critical Finding: There is a serious discrepancy between the excessive yellowing and deep scratches on the device’s casing and the “0000001” (Total 1 unit of operating time) data displayed on the screen. This situation strengthens two possibilities: Either the device’s electronic board/screen has been recently replaced and the counter reset, or the device’s counter has undergone a technical intervention. The electronic operating hours may not reflect the actual service life compared to the casing’s wear and tear.

Label Information and Warnings

On the front panel of the device, there are warning texts in Turkish and English to inform the user:

• Oxygen Purity: It is stated that the device provides oxygen concentration at 93% ±3%.
• Safety Warning: The statement “DO NOT SMOKE OR HAVE FLAMES IN THE VICINITY.” is clearly legible.
• Maintenance Warning: The statement “It is recommended to clean the dust filter once a month and replace the air inlet filter once a month.” is present.
• Authorization Warning: It is emphasized that the machine should not be opened by unauthorized personnel.
• Recommendation Label: An additional informational label titled “RECOMMENDATIONS TO EXTEND THE DEVICE’S LIFESPAN” is present on the handle, but its text content cannot be fully read due to the visual angle.

Mechanical and Electronic Components

• Flow Meter: A mechanical flow meter in the form of a transparent tube is present on the front panel. The scale ranges from 0 to 5 L/min (Liters/Minute). The adjustment knob is in place.
• Control Panel: The device features 3 black push buttons and an on/off switch (mechanical on/off switch – the black round button in the upper right corner).
• Indicator Lights: Below the screen, there are status LEDs such as P.O. (Power On), P.F. (Power Fail), L.P. (Low Pressure), H.P. (High Pressure), L.O2 (Low O2), H.O2 (High O2). In the visual, a green LED (likely P.O. normal operation) is lit.

Areas of Use

This product is used to provide long-term oxygen therapy (LTOT) to patients in a home environment for conditions such as chronic obstructive pulmonary disease (COPD), emphysema, or other respiratory failure conditions. It operates electrically, concentrating oxygen from the room air and delivering it to the patient.

Current Malfunctions and Potential Risk Analysis

• Missing Humidifier Bottle: The humidifier bottle on the front of the device is missing. Without this part, the oxygen delivered to the patient will be dry, which can cause dryness in the respiratory tract. An appropriate humidifier bottle must be procured before use.
• External Physical Damage: The deep scratch on the casing suggests that the device has been subjected to impact. While it cannot be determined from the visual whether this impact has damaged the internal compressor or valves, the casing integrity has not been compromised.
• Time Counter Inconsistency: The inconsistency between the low value on the counter (0000001) and the physical wear of the device creates uncertainty about the device’s history.

Quantity Information

The visuals show 1 (one) Plusmed brand Oxygen Concentrator device.