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Get Your BiPAP/VPAP ST, ST-A, and ASV Machines | Order Your Supplies


Discover our comprehensive collection of BiPAP/VPAP ST, ST-A, and ASV CPAPs, offering advanced respiratory support tailored to individual needs. Our range includes a variety of bilevel and adaptive servo-ventilation devices designed to provide personalized therapy with adjustable pressure settings and advanced comfort features.

Whether you require enhanced pressure support, precise algorithmic adjustments, or comprehensive data monitoring, our selection of... Read More

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BiPAP Machine / VPAP ST, ST-A, and ASV Machines

What is a BiPAP Machine? 


BiPAP (Bilevel Positive Airway Pressure) machines are advanced devices designed to assist individuals with breathing difficulties, particularly those with sleep apnea. Unlike CPAP machines that deliver a continuous stream of air, BiPAP machines provide two levels of pressure: a higher pressure for inhalation (IPAP) and a lower pressure for exhalation (EPAP). This dual-pressure system makes breathing more comfortable and is especially beneficial for patients with more complex respiratory conditions. 


What is a VPAP Machine? 


VPAP (Variable Positive Airway Pressure) is a term often used interchangeably with BiPAP, particularly in products from ResMed. VPAP machines function similarly to BiPAP devices, providing automatically varying levels of pressure, a higher pressure during inhalation, and a lower pressure during exhalation. These machines are typically used to treat sleep apnea and other respiratory disorders. 


What is an ST Machine? 


ST (Spontaneous/Timed) machines are specialized BiPAP or VPAP devices that offer an additional timed backup rate. This means the machine can deliver a breath at a set rate if the patient’s spontaneous breathing rate falls below a predetermined threshold. ST machines are particularly useful for patients with central sleep apnea, where the brain does not send the proper signals to the muscles that control breathing. 


What is an ST-A Machine? 


ST-A machines are advanced versions of ST devices, offering additional features and modes. They are designed to provide even more precise respiratory support, including advanced algorithms to adapt to the patient’s breathing patterns and additional settings to tailor therapy to individual needs. These machines are ideal for patients with complex sleep apnea and other severe respiratory conditions. 


What is an ASV Machine? 


ASV (Adaptive Servo-Ventilation) machines are highly sophisticated devices designed to treat central sleep apnea, mixed sleep apnea, and complex sleep apnea. ASV machines continuously monitor the patient’s breathing and adjust the pressure support dynamically to maintain stable breathing patterns. This adaptive technology helps to address irregular breathing patterns effectively, providing a tailored and comfortable therapy experience. 


Comparison Table Between BiPAP, VPAP ST, ST-A, and ASV Machines

FeatureBiPAPVPAP ST ST-AASV Machines
Full FormBilevel Positive Airway PressureVariable Positive Airway Pressure (Spontaneous/Timed)Spontaneous/Timed ST-AAdaptive Servo-Ventilation
Primary UseTreats OSA, CSA, COPD, and neuromuscular disordersTreats CSA and hypoventilation disordersAdvanced respiratory support for CSA, OSA, and mixed apneaTreats CSA, mixed apnea, and Cheyne-Stokes respiration
Pressure LevelsDual (IPAP and EPAP)Dual (IPAP and EPAP) with timed backup rateDual (IPAP and EPAP) with advanced adaptive supportDual (IPAP and EPAP) with adaptive pressure support
Timed Backup RateNoYesYesNo
Adaptive AlgorithmsNoNoYes (e.g., iVAPS)Yes (adaptive to breathing patterns)
Data TrackingAdvancedAdvancedAdvancedAdvanced
User InterfaceUser-friendlyUser-friendlyUser-friendlyUser-friendly
Primary UsersOSA, COPD, neuromuscular disorder patientsCSA, hypoventilation disorder patientsComplex sleep apnea and severe respiratory disorder patientsCSA, Cheyne-Stokes, and complex apnea patients
Comfort FeaturesAdjustable pressure, ramp timeAdjustable pressure, ramp time, timed breathsAdjustable pressure, ramp time, advanced comfort settingsAdjustable pressure, ramp time, adaptive pressure
PortabilityVaries (some models are portable)Varies (some models are portable)Varies (some models are portable)Varies (some models are portable)
Noise LevelLowLowLowLow
Mask CompatibilityCompatible with most CPAP masksCompatible with most CPAP masksCompatible with most CPAP masksCompatible with most CPAP masks
Power OptionsAC, DC, batteryAC, DC, batteryAC, DC, batteryAC, DC, battery
Example ModelsResMed AirCurve 10 VAuto, Philips Respironics DreamStation BiPAPResMed AirCurve 10 ST, Philips Respironics BiPAP S/TResMed AirCurve 10 ST-A with iVAPSResMed AirCurve 10 ASV, Philips Respironics DreamStation BiPAP AutoSV



Key Features of BiPAP, VPAP ST, ST-A, and ASV Machines 


1. Dual Pressure Levels 


BiPAP and VPAP machines provide two pressure levels: IPAP and EPAP. 


  • Inhalation and Exhalation Support: Inhalation Pressure (IPAP): This is the higher pressure setting that assists with inhalation. It helps to open the airway and ensure that sufficient amount of air is drawn into the lungs. 
  • Exhalation Pressure (EPAP): The lower pressure setting during exhalation makes it easier for the user to breathe out. This reduces the effort required and helps in maintaining a continuous airflow. 

This dual-pressure system helps to ease the breathing process and reduce the effort required for exhalation, making it particularly beneficial for patients with complex respiratory conditions. The dual pressure levels adapt to the natural breathing pattern, making the therapy more comfortable and less intrusive. 


2. Timed Backup Rate 


ST and ST-A machines include a timed backup rate feature, which ensures that the patient receives a minimum number of breaths per minute. This is crucial for patients with central sleep apnea, as it provides a safety net if spontaneous breathing stops. The timed backup rate acts as a safety net, ensuring continuous breathing support even if the user stops breathing spontaneously. This feature helps maintain consistent ventilation, improving overall therapy effectiveness and patient outcomes. 


3. Adaptive Algorithms 


ASV machines use adaptive algorithms to continuously monitor and adjust the pressure support based on the patient’s breathing patterns. This real-time adaptation helps to stabilize breathing and address irregularities effectively. The real-time adjustments mean that therapy is always tailored to the patient’s immediate needs, improving comfort and effectiveness. This technology is particularly useful for managing central and complex sleep apnea, where breathing patterns can be highly irregular. 


4. Advanced Data Tracking 


Many modern machines come equipped with advanced data tracking capabilities, allowing healthcare providers to monitor therapy effectiveness and make necessary adjustments. Patients can also benefit from insights into their sleep patterns and overall respiratory health. Data tracking helps in assessing the effectiveness of therapy and making necessary adjustments to optimize treatment. 


5. Humidification 


Integrated or optional humidifiers are a common feature in these machines, providing moisture to the air delivered during therapy. This helps to prevent dryness and irritation in the airways, enhancing overall comfort. Users can adjust the humidification level to suit their comfort needs. Humidification helps prevent dry mouth and throat, which are common side effects of CPAP therapy. Maintaining moisture in the airways can help reduce nasal congestion and improve overall respiratory health. 


6. User-Friendly Interfaces 


BiPAP, VPAP ST, ST-A, and ASV machines typically feature user-friendly interfaces with intuitive controls and displays. This makes it easy for patients to adjust settings and monitor their therapy. User-friendly interfaces make it easier for patients to manage their therapy independently. Clear and intuitive controls ensure that even those who are not tech-savvy can operate the machine effectively. 


Benefits of BiPAP, VPAP ST, ST-A, and ASV Machines 


1. Enhanced Comfort 


BiPAP, VPAP, ST, ST-A, and ASV machines are designed to enhance patient comfort during sleep therapy. By offering varying levels of pressure and adaptive support, these devices make breathing more natural and less strenuous, which can significantly improve the user’s comfort and adherence to therapy. 


2. Improved Breathing 


Support These machines provide superior breathing support by delivering customized pressure levels tailored to the patient’s needs. Whether through spontaneous breathing support or timed interventions, these devices ensure that patients receive consistent and effective respiratory assistance throughout the night. 


3. Advanced Technology 


Modern BiPAP, VPAP, ST, ST-A, and ASV machines incorporate advanced technology, including algorithms that adapt to the patient’s breathing patterns in real-time. This ensures optimal therapy effectiveness and enhances the overall treatment experience. 


4. Versatility 


These machines are versatile and can be used to treat a wide range of respiratory conditions, including obstructive sleep apnea (OSA), central sleep apnea (CSA), complex sleep apnea, and other severe respiratory disorders. The ability to tailor therapy to specific needs makes these devices highly effective for various patient populations. 


How to Choose the Right Machine 


1. Consult with a Healthcare Provider 


Before selecting a BiPAP, VPAP ST, ST-A, or ASV machine, it is essential to consult with a healthcare provider. They can assess your specific needs and recommend the most suitable device based on your medical condition and therapy requirements. 


2. Consider Comfort Features 


Look for machines that offer comfort features such as humidification, adjustable pressure settings, and user-friendly interfaces. These features can significantly enhance your therapy experience and encourage adherence. 


3. Check Compatibility 


Ensure that the machine you choose is compatible with your existing CPAP mask and other accessories. Most modern machines are designed to work with a wide range of masks, but it’s always best to verify compatibility. 


4. Review Data Tracking Capabilities 


Advanced data tracking features can provide valuable insights into your therapy progress and help healthcare providers make necessary adjustments. Consider a machine with comprehensive data tracking and reporting capabilities. 


5. Evaluate Size and Portability 


If you travel frequently, you may want to consider a machine that is lightweight and portable. Many modern BiPAP and ASV machines are designed to be travel-friendly, making it easier to maintain your therapy routine on the go. 


These Machines Are Ideal For 


When selecting the right respiratory therapy device, understanding the specific conditions and needs each machine caters to is crucial. Here’s a detailed overview of the ideal candidates for BiPAP, VPAP ST, ST-A, and ASV machines: 


BiPAP Machines 


Ideal For: 


  • Obstructive Sleep Apnea (OSA) Patients: BiPAP machines are highly effective for individuals with moderate to severe OSA. The dual pressure settings help keep the airway open during inhalation and make exhalation easier, reducing apneas and hypopneas. 
  • Patients with Complex Sleep Apnea: BiPAP machines can accommodate those who experience both obstructive and central sleep apneas, providing tailored pressure support for both conditions. 
  • Individuals with COPD (Chronic Obstructive Pulmonary Disease): The dual pressure settings in BiPAP machines assist in improving ventilation, reducing the effort required to breathe, and enhancing overall respiratory function. 
  • Patients with Neuromuscular Disorders: BiPAP therapy can support breathing for individuals with neuromuscular disorders such as ALS or muscular dystrophy by ensuring adequate ventilation during sleep. 

VPAP ST Machines 


Ideal For: 


  • Central Sleep Apnea (CSA) Patients: VPAP ST machines are particularly beneficial for individuals with CSA, where the brain fails to send the appropriate signals to the muscles that control breathing. The timed backup rate ensures continuous breathing support. 
  • Patients with Hypoventilation Disorders: Individuals with conditions that lead to hypoventilation (inadequate breathing) during sleep, such as obesity hypoventilation syndrome, can benefit from the timed backup breaths provided by VPAP ST machines. 
  • Patients Requiring Precise Ventilatory Support: The ability to set specific inspiratory and expiratory pressures, along with a timed backup rate, makes VPAP ST machines suitable for patients needing precise ventilatory support. 

VPAP ST-A Machines 


Ideal For: 


  • Patients with Advanced Respiratory Conditions: VPAP ST-A machines are ideal for individuals with advanced or complex respiratory conditions that require adaptive support. This includes those with CSA, OSA, or mixed sleep apnea. 
  • Patients with Variable Breathing Needs: The adaptive technology in ST-A machines, such as iVAPS (intelligent Volume-Assured Pressure Support), ensures that patients receive the necessary support based on their changing breathing needs throughout the night. 
  • Individuals Needing High Levels of Customization: VPAP ST-A machines offer extensive customization options, making them suitable for patients who require tailored therapy settings to address specific respiratory challenges. 

ASV Machines 


Ideal For: 

  • Central Sleep Apnea (CSA) Patients: ASV machines are specifically designed for treating CSA by continuously monitoring and adapting to the patient’s breathing patterns, providing dynamic pressure support to stabilize breathing. 
  • Patients with Complex Sleep Apnea: Individuals with complex sleep apnea, which includes both obstructive and central sleep apnea events, can benefit significantly from the adaptive capabilities of ASV machines. 
  • Patients with Cheyne-Stokes Respiration: ASV machines are highly effective in treating Cheyne-Stokes respiration, a condition characterized by cyclic variations in breathing patterns often seen in heart failure patients. 
  • Individuals Requiring Advanced Adaptive Support: The sophisticated algorithms in ASV machines make them ideal for patients needing advanced, real-time adjustments to their therapy, ensuring optimal respiratory support throughout the night. 

General Considerations 


Patients with Sensitive Skin or Facial Irritation 


Memory foam cushions, like those available with some BiPAP and ASV machines, are ideal for patients who experience irritation or discomfort from standard silicone cushions. 


Traveling Patients 


Patients who travel frequently should consider lightweight and portable models that are easy to pack and use on the go, ensuring uninterrupted therapy. 


Users Needing High Pressure Support 


Individuals requiring higher levels of pressure support will benefit from machines that can deliver and maintain effective therapy at elevated pressures, ensuring airway patency throughout the night. 


Patients Requiring Detailed Therapy Monitoring 


Advanced data tracking and reporting capabilities are essential for patients and healthcare providers to monitor therapy effectiveness and make necessary adjustments for optimal outcomes. 


General Maintenance Tips for BiPAP, VPAP ST, ST-A, and ASV Machines 


Maintaining your BiPAP, VPAP ST, ST-A, or ASV machine is essential to ensure its optimal performance, longevity, and hygiene. Regular maintenance helps in preventing malfunctions and ensures that you receive effective and comfortable therapy. Here are some general maintenance tips for these advanced respiratory devices: 


Daily Maintenance 


Clean the Mask 


  • Disassemble the Mask: Remove the mask cushion and headgear. 
  • Wash the Components: Use mild soap and warm water to clean the mask parts. Avoid using harsh chemicals or alcohol-based cleaners. 
  • Rinse Thoroughly: Ensure all soap residue is removed to prevent skin irritation. 
  • Air Dry: Let the mask parts air dry completely before reassembling. 

Wipe Down the Machine 


  • Use a Damp Cloth: Wipe the exterior of the machine with a damp cloth to remove dust and dirt. Ensure the cloth is not too wet to avoid moisture entering the machine. 
  • Avoid Liquid Exposure: Keep liquids away from the machine’s air inlet and electrical components. 


Weekly Maintenance 


Clean the Humidifier Chamber 


  • Remove the Chamber: Detach the humidifier chamber from the machine. 
  • Wash with Soap and Water: Clean the chamber with mild soap and warm water. Avoid using abrasive brushes that can scratch the surface. 
  • Rinse and Dry: Rinse thoroughly and allow it to air dry before reattaching to the machine. 

Clean the Tubing 


  • Soak in Soapy Water: Fill the tubing with warm, soapy water and let it soak for a few minutes. 
  • Rinse Well: Flush out all soap residue with clean water. 
  • Hang to Dry: Hang the tubing over a shower rod or towel rack to let it dry completely. 

Monthly Maintenance 


Inspect and Replace Filters 


  • Disposable Filters: Check disposable filters for discoloration or dirt buildup. Replace them if they appear dirty or after 30 days of use. 
  • Reusable Filters: Wash reusable filters with warm soapy water, rinse thoroughly, and let them air dry completely before reinserting. 

Check the Mask Cushion 


  • Inspect for Wear and Tear: Look for signs of wear such as cracks, tears, or loss of elasticity. 
  • Replace if Necessary: Replace the mask cushion every 30 days or as needed to maintain an effective seal. 

Quarterly Maintenance 


Deep Clean the Humidifier Chamber 


  • Vinegar Solution: Clean the humidifier chamber with a solution of one part white vinegar to five parts water to remove any mineral buildup. 
  • Rinse Thoroughly: Ensure all vinegar residue is rinsed away to prevent inhalation of vinegar fumes. 

Annual Maintenance 


Professional Servicing 


  • Calibration and Inspection: Have your machine inspected and calibrated by a professional to ensure it’s working correctly and delivering accurate pressure settings. 
  • Firmware Updates: Check for any firmware updates that might enhance the machine’s performance or add new features. 

General Tips


Keep the Machine Clean and Dry 


  • Avoid Humid Environments: Keep your machine in a dry place to prevent mold and bacteria growth. 
  • Cover the Machine: Use a dust cover when the machine is not in use to protect it from dust accumulation. 

Handle with Care 


  • Avoid Dropping: Handle the machine and its components gently to avoid damage. 
  • Proper Storage: Store the machine and accessories in a protective bag when traveling. 

Monitor for Issues 

  • Check for Leaks: Regularly check for air leaks in the mask, tubing, and humidifier connections. 
  • Listen for Unusual Sounds: Be aware of any unusual noises coming from the machine, which could indicate a problem that needs attention. 

Battery and Power Supply 

  • Inspect Power Cords: Check power cords and adapters for any signs of wear or damage. Replace them if necessary. 
  • Battery Maintenance: If your machine has a battery backup, ensure it is charged and functioning correctly. Follow the manufacturer’s instructions for maintaining the battery. 

Popular Machines for Sale in Our Collection 


ResMed AirCurve 10 VPAP ASV w/HumidAir Humidifier and ClimateLine Tubing 


The ResMed AirCurve 10 VPAP ASV is an advanced adaptive servo-ventilation device designed to treat central sleep apnea (CSA), complex sleep apnea, and Cheyne-Stokes respiration. It features an integrated HumidAir humidifier and ClimateLine heated tubing, which work together to provide optimal humidity and temperature levels, enhancing user comfort and reducing dryness or irritation in the airways. The ASV technology continuously monitors and adjusts pressure support to stabilize breathing patterns, ensuring effective and comfortable therapy throughout the night. 


ResMed AirCurve 10 VPAP ASV w/HumidAir Humidifier and SlimLine Tubing 


Similar to the model with ClimateLine tubing, the ResMed AirCurve 10 VPAP ASV with HumidAir Humidifier and SlimLine Tubing is designed to treat central and complex sleep apnea. The integrated HumidAir humidifier maintains the ideal moisture levels, while the SlimLine tubing offers a lightweight and flexible alternative, reducing drag and enhancing the freedom of movement during sleep. This model provides the same advanced ASV technology to adapt to your breathing patterns and ensure a stable, comfortable sleep experience. 


ResMed AirCurve 10 ST Bi-Level CPAP 


The ResMed AirCurve 10 ST Bi-Level CPAP is engineered to deliver spontaneous/timed (ST) bilevel therapy, making it ideal for individuals with central sleep apnea or those who need additional ventilation support. This device offers dual pressure settings—one for inhalation (IPAP) and one for exhalation (EPAP)—ensuring effective and comfortable breathing assistance. It also features an integrated HumidAir humidifier to maintain optimal humidity levels and reduce airway dryness, promoting a more comfortable therapy experience. The AirCurve 10 ST is a reliable solution for those requiring advanced bi-level therapy.

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