Inserted medical oxygen pressure reducers are common medical devices, and the following are common classifications of their use.
Classification description
1、 Main types and differences:
1. Basic style (single-stage) pressure reducer/flowmeter
Speicfication: This is the most common type. Directly rotate on the oxygen cylinder valve to reduce the high pressure (usually about 150 atmospheres) to around 0.4 MPa, and then adjust and display the oxygen flow rate (liters/minute) through a float flowmeter.
Features:
1.1. Single function: only responsible for pressure reduction and flow regulation.
1.2 No alarm: Users need to observe the oxygen cylinder pressure gauge themselves to estimate the remaining usage time.
1.3 Scope of application: Home oxygen therapy, clinics, bedside ward, emergency transportation and other scenarios.
1.4 Usually includes a high-pressure gauge (displaying the pressure inside the bottle), a low-pressure/flow regulating valve, and a float flowmeter tube.
2. Pressure reducer with pressure safety valve
Description: On the basis of the basic style, a safety valve has been added. When the output pressure rises abnormally (such as downstream pipeline blockage), the safety valve will automatically open to release pressure, preventing equipment damage and protecting patient safety.
2.1 Features: Higher security and more standard configuration.
3. Intelligent/integrated oxygen regulator
Description: An advanced device that integrates electronic monitoring and alarm functions.
Features:
3.1 This model has electronic digital display: precise display of bottle pressure, flow rate, and remaining usage time.
3.2 Sound and light alarm: Automatic alarm when oxygen is depleted, flow rate is abnormal, and battery power is low.
3.3 Accurate and Stable: The output flow is more stable and not affected by changes in bottle pressure.
Scope of application: Intensive Care Unit (ICU), operating room, long-distance critical patient transportation, and other scenarios that require extremely high safety and reliability.
4. Special pressure regulator for hyperbaric oxygen chamber
Description: Used to reduce the pressure of oxygen from the gas source and input it into the respiratory system and cabin environment control system of a high-pressure oxygen chamber. Its pressure level, flow range, and safety requirements are completely different from ordinary medical pressure reducers, and it belongs to special equipment.
Characteristics: Strong professionalism, non universal equipment.
5. Classify by connection method
This style has a threaded connection type: the most common, which directly screws into the oxygen cylinder valve. There are international standards (such as American standard, European standard, and winning bid), and it is necessary to ensure thread matching.
Quick connector type: used to connect the terminal outlet of the central oxygen supply system (the “oxygen socket” on the ward wall). Insertion is sufficient for oxygen supply, usually integrated into the ward equipment belt.
How to choose inserted medical oxygen regulator?
Step 1: Clarify the use of oxygen source:
High pressure oxygen cylinder: A threaded pressure reducer must be used.
Central oxygen supply system (hospital ward): using a quick connect flow meter (usually integrated with a humidification bottle), no pressure reduction function is required, only the flow rate needs to be adjusted.
Step 2: Evaluate core requirements (for oxygen cylinder users)
Usage scenarios and security requirements:
For families, community clinics, and general wards, choosing a basic pressure reducer (strongly recommended models with pressure safety valves) can meet your needs. High cost-effectiveness and simple operation.
ICU、 Operating room, ambulance, long-distance critical transportation: Intelligent pressure reducers must be selected. Its alarm function is an important component of life support equipment, which can promptly remind medical staff to replace gas cylinders and avoid oxygen supply interruption.
Special environments (such as psychiatric wards): Consider choosing pressure reducers with special designs (such as hidden adjustment knobs, reinforced types) to prevent accidental operation or damage by non professionals.
Patient dependence and traffic demand:
For patients who require long-term, stable low flow oxygen therapy (such as COPD), a reliable basic pressure reducer is sufficient.
For respiratory support patients who require high flow and precise flow control, intelligent devices with more stable output should be selected.
Step 3: Key Checkpoints
Oxygen cylinder thread matching: Confirm that the thread specifications of the pressure regulator interface and the oxygen cylinder valve are consistent (such as G5/8 “generally)
Pressure and flow range: Ensure that the maximum input pressure is suitable for the oxygen cylinder (usually 15MPa or higher), and the output flow range can meet the doctor’s requirements (such as 1-15 L/min).
Quality and Function:
Material: The main body should be made of brass or stainless steel, with pressure resistance and corrosion resistance.
Instruments: The scales of pressure gauges and flow meters should be clear and easy to read.
Sealing: Ensure that all sealing rings are intact and undamaged.
Humidification bottle: usually needs to be used in conjunction to humidify oxygen and avoid respiratory dryness. Check if it is convenient to add water and clean.
What issues should be paid attention to when wholesale inserting oxygen regulator in mass quantities to purchase?
What issues should be paid attention to when wholesale inserting oxygen pressure reducers in large quantities?
In depth review of product quality and safety
1. Core components and performance of the product:
Pressure safety valves must be standard. Confirm that the pressure relief value meets the standard.
2. Flow accuracy: Is the output stable and accurate within the calibrated flow range (such as 1L/min, 5L/min, 10L/min)? Require suppliers to provide factory inspection reports when shipping.
3. Tight airtightness: There must be no leakage under high pressure. This is a basic safety requirement.
4. Material compatibility: All components in contact with oxygen (valve body, sealing ring, pipeline interface) must use “oxygen compatible” materials and undergo degreasing treatment to prevent combustion and explosion under high concentration oxygen.
5. Key specification matching:
Interface thread: It must be clear whether it is the local market standard (such as G5/8 “) or other standards (such as American standard DISS). The wholesale products must be perfectly matched with the oxygen cylinder valve interface used in the target market (hospitals, households). This is one of the most common after-sales issues.
Input/output pressure range: The input pressure should be able to match the filling pressure of the local oxygen cylinder (usually 12.5MPa or 15MPa).
6. Packaging and labeling:
There must be clear Chinese labels on the packaging, indicating: product name, model, medical device registration number, manufacturer, production date, expiration date, instructions for use, precautions, etc.
Communicate with the supplier in advance that the packaging should ensure shock, dust, and moisture resistance during transportation.