Secondhand Yuwell 7F-5B 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 23.12.2025

Yuwell 7F-5B Oxygen Concentrator Analysis Report

Device Identification

The product in the image is an oxygen concentrator, a medical respiratory support device. It is a stationary, electrically powered device that takes ambient air, removes nitrogen, and delivers high-concentration oxygen to the user. The front of the device clearly shows the humidifier jar slot, flow meter, and digital control panel.

Brand and Model

A detailed examination of the image clearly reveals the brand logo as Yuwell in the lower-middle part of the device’s front panel. The model number is specified as 7F-5B directly below the brand. This coding aligns with the product’s technical structure, design, and technical data available online. The brand and model information have been identified with 100% certainty from the original markings on the device.

Originality

The brand logo, model print, control panel labels, and English warning texts on the device appear to conform to industrial standards and are orderly. The material quality and joints (mold marks) reflect the standard manufacturing quality of the Yuwell brand. Based on visual inspection, the product is assessed to be original.

Areas of Use

The Yuwell 7F-5B oxygen concentrator is used in the treatment of patients with low blood oxygen levels (hypoxemia), particularly in cases of COPD, lung diseases, and respiratory failure. It is suitable for patients requiring long-term oxygen therapy in hospitals, clinics, or home care settings.

Quantity Information

The image shows 1 (one) main body of an oxygen concentrator. There is 1 (one) humidifier jar (water reservoir) placed inside the transparent compartment of the device.

General Condition

The device appears clean and its integrity is preserved. Although it is second-hand, no prominent signs of heavy wear and tear have been observed. No intense yellowing, commonly seen in older devices, has been detected in the outer casing’s color; it retains its white hue. Its condition appears suitable for use.

Physical Deformations

No deep scratches, cracks, dents, or breaks have been detected on the device’s white plastic casing. The corners and joints appear smooth. There are no cracks on the front transparent panel cover. No significant stains are visible, apart from superficial dirt or dust.

Mechanical Components

Flow Meter: The flow tube located on the right side is intact. The adjustment knob is in place and shows no significant damage.
Power Button: The “POWER” switch on the top right appears physically sound, with no indentation or breakage visible.
Lid and Hinge: The transparent humidifier cabinet lid in the middle section is in place and sturdy.

Electronic Components

As it cannot be determined from the image whether the device is plugged in, the functionality of electronic features (screen illumination, audible alerts) could not be tested. However, the control buttons on the top panel and the LCD screen are physically undamaged. The LED indicator slots on the panel are clean.

Accessories

One of the most important accessories of the device, the humidifier jar, is installed in its slot on the front panel. The bottle’s cap and hose connection points are present. However, nasal cannulas or extension tubes for oxygen delivery to the patient are not visible in the image. Also, the power cable is not visible due to the angle of the image (likely at the rear).

Battery Status

This model (Yuwell 7F-5B) is typically a stationary model powered by mains electricity (AC). As it is not a portable model with an internal battery, no comment on the battery status can be made based on the image.

Labels and Technical Specifications

The printed label information on the front of the device is as follows:

• Model: 7F-5B
• Oxygen Outlet Warning: “OXYGEN OUTLET” and the metal outlet tip are marked.
• Flow Capacity: “Flow Range: ≤ 5L/min” (Flow Range: Maximum 5 Liters per minute).
• Outlet Pressure: “Outlet Pressure: ≤ 70kPa” (Outlet Pressure: 70 kilopascals or less).
• Control Panel Labels: “COUNTS (hours)”, “TIMING (minutes)”.

Screen Analysis

A digital LCD screen is located on the top of the device. As the screen is off, the current usage hours (total operating hours) or set timer information cannot be read. The screen symbolically displays an “OK” icon and various warning icons (service wrench, alarm bell), which will illuminate according to the status when the device is turned on.

Size and Compatibility

The product has a size standard for “Home Use / Stationary” devices, positioned on the floor and likely with wheels (though not visible). The flow rate can be adjusted for adult and pediatric use, but it is generally common for adult use.

Year of Manufacture

No indication (date label) specifying the year of manufacture could be read from the visual data on the front panel. This information is typically found on a metal label on the back of the device.

Usage Duration

As the LCD screen is off, the total operating hours cannot be determined from the image.

Documents

No documents such as an invoice, warranty certificate, user manual, or service report for the product are present in the image. It is unknown whether its warranty is still valid.

Potential Malfunction Risk

During the visual inspection, no significant risk (rusting, exposed cables, broken panels) that would affect the device’s functionality was observed in its external structure. The device appears clean and well-preserved. As a potential risk, the internal cleanliness of the humidifier bottle could not be fully confirmed from the image, so it is recommended to check it for hygiene purposes and replace it if necessary. Otherwise, its physical condition is positive.