Secondhand Healthcair GK420E M-113902-IL AUTOCPAP Device with Humidifier

Objective AI Report

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Report date: 11.01.2026

Puritan Bennett GoodKnight 420E CPAP and GoodKnight H2O Humidifier Analysis Report

Device Identification

The product analyzed in the visuals is a medical respiratory support device. The device consists of two main modules: an main air blower (CPAP/APAP) motor unit in the upper part, and a heated humidifier unit integrated into this unit in the lower part. The device has a compact design suitable for desktop use.

Brand and Model Information

The logos and model names on the product are clearly legible in the visuals. Accordingly:

• Brand: Puritan Bennett (The “tyco Healthcare” logo is also located in the upper left corner of the device; this indicates that the device was manufactured during its time within Tyco Healthcare).
• Main Device Model: GoodKnight 420E
• Humidifier Unit Model: GoodKnight H2O (Clearly written on the front face of the water chamber).

The device’s control panel is purple, and the “E” in the model name usually indicates an automatic pressure adjustment (Auto-CPAP) feature in this series, but the exact functional characteristic cannot be confirmed from the visual.

Authenticity Assessment

Upon examining the logo prints on the product, the font quality of the model names on the panel, the correct placement of the Tyco and Puritan Bennett logos, and the device’s molding craftsmanship, the product is assessed as Original. There are no visual defects indicating aftermarket or copied production.

Areas of Use

The Puritan Bennett GoodKnight 420E is a positive airway pressure device typically used in the treatment of Obstructive Sleep Apnea (OSA) syndrome. The device generates pressurized air to keep the patient’s airway open during sleep. The GoodKnight H2O module beneath it is used to heat and humidify this pressurized air to prevent the patient from experiencing throat and nasal dryness.

Quantity Information

A single combined system is observed in the visuals. This system physically consists of the combination of these two parts:

• 1 GoodKnight 420E Main Device
• 1 GoodKnight H2O Humidifier Chamber and Base

Overall Condition

Visual inspection of the device indicates that it is used (second-hand). It is not in “new” or “mint” condition. There are signs of use on the casing. However, the device retains its integrity and does not appear to be scrap.

Physical Deformation and Wear

The following details stand out regarding the physical condition of the product:

• Plastic Casing: Slight discoloration and dirt accumulation due to friction are observed in some areas of the device’s gray plastic parts. Dusting is present, especially at the joints and corners.
• Water Chamber: Cloudiness resembling dullness and calcification is seen in the transparent GoodKnight H2O water chamber section. Usage-related scratches are present on the plastic surface.
• Impact Mark: No deep cracks, fractures, or dents have been detected on the casing.

Mechanical and Electronic Components

Based on visual data, the mechanical and electronic condition analysis is as follows:

• Keypad: The three control buttons (settings and menu keys) located on the device’s purple panel appear physically intact. No significant wear or fading is visible on the buttons.
• Hose Outlet: The front air outlet port and the connection point leading to the humidifier are intact.
• Screen: No cracks are visible on the LCD screen’s glass. As the device is powered off, it cannot be known whether the screen is functional or if there is pixel loss.

Accessories and Missing Parts

Only the main device and the humidifier base are present in the visuals. The following parts, which are essential for the device’s operation and patient use, are NOT PRESENT in the visuals:

• Power adapter and power cable.
• Patient hose (circuit).
• Patient mask.
• Air filters (their condition is not visible as the rear intake is closed).
• User manual or carrying bag.

Water Chamber Details

The transparent water tank of the GoodKnight H2O unit has a black “MAX” indicator and a fill line. This line indicates the upper limit of water to be placed in the tank. There is no water in the chamber; it is dry.

Potential Malfunction Risk

While no serious damage is visible on the device’s outer casing, the dullness of the humidifier water chamber suggests heavy past use or use with hard water. This condition may increase the risk of scale buildup on the heating plate. Furthermore, it is anticipated that the device’s internal air passages and fan system may require professional maintenance and cleaning for hygiene purposes. No serious physical risk (e.g., breakage, disconnected cable) is apparent.