The diagram shows an exploded view of an anti-slip mattress (medical air cushion). It includes 54 mini cubic air cells, a two-system alternating mechanism, pressure sensors, and the product's medical care attributes. The detailed purpose and working principle of the diaphragm pump are as follows:
Core Purpose: Dynamic Pressure Ulcer Prevention and Pressure Distribution
This is the core power unit of a typical electric anti-decubitus air mattress (alternating pressure air mattress). It mainly serves patients who are bedridden or have limited mobility. Its functions include:
- Alternating Pressure Relief: There are 54 air cells in a two-system combination. The diaphragm pump continuously and regularly alternates inflation and deflation between these two groups. When Group A inflates, Group B deflates, and then they switch. This dynamically changes the contact points between the body and the mattress, preventing prolonged pressure on local tissues, promoting blood circulation, and effectively preventing pressure ulcers.
- AIR BACK Expansion (Back Support): Under specific modes or triggered by sensors, the diaphragm pump provides stable air support and shape adaptation for the back area, improving comfort and slip resistance when the patient is in a semi-reclining position.
Intelligent Control: Pressure Sensor Linkage
The diaphragm pump is equipped with pressure sensors for closed-loop control:
When the patient's weight presses on the mattress, the sensors detect the pressure at various locations. The control system adjusts the inflation/deflation volume of the corresponding air cells via the diaphragm pump, achieving adaptive pressure relief. This ensures that for patients of different body types, the skin interface pressure remains below the threshold for pressure ulcer formation during lying flat or turning over. Meanwhile, the bottom soft foam layer provides double insurance against bottoming out.
Why Choose a Diaphragm Pump?
As a medical care device, Nidec's miniature diaphragm pump offers the following specific advantages in this application:
- Long Life and Continuous Operation: Anti-decubitus mattresses need to run 24/7. The pump has a long rated life (typically 3,000–5,000+ hours), suitable for long-term continuous duty.
- Low Noise and Low Vibration: Bedridden patients need rest. The diaphragm pump operates quietly, reducing disturbance to the patient.
- Oil-Free and Clean: As an air pump, it is completely oil-free and delivers pure air, meeting medical hygiene requirements. Combined with a waterproof, breathable cover, it is easy to clean.
Other Potential Auxiliary Uses
- Turning Assistance: Some high-end air mattresses use single-side inflation to raise one side, helping caregivers turn the patient.
- Replacement Design: This is a replacement-type pad, meaning the pump and control system can be used with existing bed frames, focusing on providing intelligent air pressure support.
Summary: The entire intelligent anti-decubitus system achieves dynamic pressure relief, back expansion support, and adaptive pressure regulation through precise inflation and deflation of air. It is primarily used for long-term bedridden pressure ulcer prevention in medical care.
