Continuous Negative External Pressure (cNEP)

Continuous Negative External Pressure (cNEP) is a new technology that is used for the treatment of obstructive sleep apnea (OSA) and sleep disordered breathing. It works by applying a negative pressure (suction) to the neck area in order to widen the mid-upper airway during sleep.


cNEP offers a potential to be an alternative to CPAP (continuous positive airway pressure).  CPAP is the most popular treatment for obstructive sleep apnea. While CPAP works by introducing constant positive pressure inside of the airway,  cNEP applies negative pressure outside of the airway.

Many OSA patients complain of dry mouth and nose while using CPAP. cNEP offers the possibility of bypassing the mouth/nose in order to affect the airway.


cNEP Continuous Negative External Pressure vs. Iron Lung

Continuous Negative External Pressure works in familiar manner as the ‘Iron Lung’ that was popularized during the polio epidemic during the 1930’s. While the iron lung is a negative pressure ventilator that varies pressure outside of the chest walls in order to expand and contract the lungs, cNEP applies a constant negative external pressure to the neck area in order to expand the airway that underlies the contact area.

Iron Lung vs. Continuous Negative External Pressure (cNEP)
Iron Lung vs. Continuous Negative External Pressure (cNEP)

Sommetrics , Inc is a California corporation that has developed a new technology called the “aer+ ™” that uses cNEP. It has been FDA cleared and will be distributed in Canada in 2018.

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5 thoughts on “Continuous Negative External Pressure (cNEP)

  1. Lynette Lindia Reply

    I use cpap until the pain in my abdomen from inhaled air wakes me up. The machine has been a life saver, but I am experiencing pain nightly after only 90 or so minutes. Tired of being exhausted.

  2. kelly griffith Reply

    Hello. Has this been approved in the US? If so,how do I find a dr? Are there trials going on? If not available yet, do you know when it might be? Thank you!

    • Ed Mairet Reply

      I had to stop CPAP due to adverse impact on the eyes via sinus cavity. Hope this can be available in USA. With FDA approval why is it taking so long?

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