Defective Secondhand Nidek Nuvo Lite 920 5L/min Oxygen Concentrator

Objective AI Report

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Report date: 08.12.2025

NIDEK Medical Nuvo Lite Mark 5 Oxygen Concentrator Analysis Report

Device Identification and Description

The device in the image is a medical device that produces concentrated oxygen by filtering ambient air to provide respiratory support. Such devices are referred to as oxygen concentrators in medical terminology. The device’s design is a compact structure, vertical in form, portable (with wheels), and suitable for home/clinical use.

Brand and Model Information

The writings and logos on the blue control panel on the front of the device have been examined in detail:

• Brand: The NIDEK Medical logo is prominently located in the upper left corner of the panel.
• Model: The phrase Nuvo Lite is centered on the panel in large type. Additionally, the expression Mark 5 is visible in a smaller font directly above the “Nuvo” text. This indicates that the full model or series of the device is Nuvo Lite Mark 5.

Areas of Use

This product is used to provide continuous or intermittent oxygen support to patients with low blood oxygen levels (e.g., COPD, pulmonary fibrosis, respiratory failure). It is designed for long-term oxygen therapy in home care services, nursing homes, or clinical settings. As can be understood from the adjustment knob on the top of the device, the flow rate can be adjusted according to the patient’s needs.

General Condition and Physical State

Upon examining the external cosmetic condition of the device, the following observations were made:

• General Appearance: The product is in a used condition. There are signs of use that have formed over time on its casing and plastic surfaces.
• Physical Deformation: Prominent scratches, scuff marks, and minor stains are visible on the device’s lower left corner and side surfaces. No deep cracks or breaks were detected in the plastic casing, but superficial wear is present. Its color is in shades of grey, and partial yellowing or dirt is noticeable.
• Panel Condition: The writings on the control panel are legible. No erasure has been observed.

Mechanical and Electronic Component Examination

Technical analyses performed based on the image are as follows:

• Flow Control Knob: On the upper part of the device, there is a black, rotatable flowmeter knob. The scale around the knob ranges from 0 to 5, and the inscription “FLOW L/min” is present. This indicates that the device provides a maximum oxygen flow of 5 liters per minute.
• Oxygen Outlet: To the immediate right of the knob, the metal Oxygen Outlet, where the oxygen cannula is to be attached, appears robust and in place.
• On/Off Switch: On the right side, a black I/O (On/Off) switch is present.
• Warning Lights: To the left of the switch, there are an alarm symbol (bell) and LED indicators showing the operating status. Since the device was not operating, the functionality of the lights could not be tested.
• Reset Button: Below the switch, there is a circuit breaker fuse button labeled “PUSH TO RESET”.
• Carrying Handle: At the very top of the device, there is a black, sturdy-looking carrying handle.
• Wheels: Black wheels are present at the base of the device, confirming its mobile characteristic.

Label Information and Warnings

On the front lower body of the device, there is a transparent/white-backed Turkish warning label, which appears to have been affixed later. The following items can be read on the label:

• “THE DEVICE’S BACTERIA FILTER MUST BE CHANGED EVERY 6 MONTHS.”
• “THE DEVICE SHOULD BE TAKEN TO AN AUTHORIZED TECHNICAL SERVICE FOR MAINTENANCE ONCE A YEAR.”
• “OTHERWISE, THE DEVICE WILL BE OUT OF WARRANTY COVERAGE.”

This label proves that the device was sold or used in the Turkish market and requires periodic maintenance.

Originality and Accessories

Originality: The logo prints, panel design, and material quality on the product indicate that the device is an original NIDEK Medical product. No signs suggesting a copy have been encountered.

Quantity Information: Only 1 unit of oxygen concentrator is present in the image.

Accessories: No accessories (water bottle/humidifier bottle, oxygen cannula, mask, or power cable) are present in the image apart from the device.

Current or Potential Risk Analysis

As a result of the visual analysis, no damage compromising the physical integrity of the device (e.g., casing crack) was observed. However, the wear on the outer surface indicates extensive use of the device. Considering the warnings stated on the Turkish label, “filter change every 6 months” and “annual maintenance,” it is critically important for the buyer to check the filters and have the device undergo general maintenance at an authorized service center before use for its healthy operation.