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In Europe, approximately 2 to 5 % of the population suffers from sleep apnea. The disorder is characterized by pauses in breathing during sleep and this can cause drowsiness during the day as well as a broad spectrum of serious medical conditions.

One of the most common and effective treatments for moderate to severe sleep apnea is the use of a continuous positive airway pressure (CPAP) device. This device keeps the patient’s airway open during sleep by means of a flow of pressurized air into the throat.


French telehealth provider SRETT medical has developed the T4P, a universal telemonitoring solution used to collect and analyze data from CPAP devices. T4P is unique as it is the only solution adapted to fit all CPAP devices on the market.

Reliable real-time data

Without connection, data from a CPAP device is available only at the patient’s home. When healthcare professionals need the data, it has to be collected physically, for example by visiting the patient’s home or having the patient bring the removable storage to the care provider’s office. By connecting the CPAP device this information becomes available for everybody who might need it – anywhere and anytime.

SRETT patient

Thanks to telemonitoring devices as T4P we have access to data updated every day through a webportal. Managing our patient is much easier: we optimize our visits to the patient and we can intervene very quickly if an issue occurs.

Olivier Carantelly, New Technology Manager at Linde Homecare France

T4P collects data such as mask leak rate and therapy pressure every 10 minutes when the mask is being used. Once a day all data is transmitted to SRETT medical’s cloud solution and forwarded to the healthcare professionals. The frequently updated data helps home care providers to monitor the treatment closely – for example, if a patient is using the therapy according to prescription, if therapy is well delivered, and whether it’s effective.

“The connected device can share data with other stakeholders too, but in different formats. The patient, who traditionally has been left outside of the loop, can now be much more involved in the therapy, resulting in a more personalized experience and an increased level of safety. Physicians, meeting with the patient perhaps only once a year, can also be provided access to the data, but highly aggregated to make it useful”, Philippe Salamitou, CEO at SRETT, explains.

International expansion

Following the successful launch of T4P in France, using a local operator for connectivity, SRETT medical is now expanding into additional European markets, such as Spain, Belgium, Germany and Sweden. After evaluating a number of connected solution providers with international capacity the company chose Telenor Connexion.


The main parameters we looked at were scalability and reliability of the solution offered. Naturally, connectivity uptime is key to T4P and we needed a provider with roaming access to most European GPRS networks. This enables us to transfer data wherever we are and ensures back-up connectivity through overlapping networks in each market. In this respect, Telenor Connexion’s multi-operator solution is unmatched.Philippe Salamitou, CEO at SRETT

How does it work?

T4P connects to the patient’s breathing circuit, between the air flow exit and the mask line. Deploying the solution is very easy and can be managed even by the patient itself. After deployment the connection is verified through a simple five-minute test.

Mise en page 1

The communications solution used by T4P is provided by Telenor Connexion. Data collected by the connected device is transmitted anonymously over the GPRS network to SRETT’s private cloud solution, where it is stored and processed according to user preferences. In the next step, the patient data is automatically uploaded to healthcare professionals’ systems.
As T4P is battery-powered the device needs to connect to the network in as short a time as possible, to minimize energy consumption. Technical analysis conveyed by SRETT medical when evaluating suitable providers showed that Telenor Connexion offered the shortest response-times. The total duration of the connection was another key metric, as well as customer service and support.


With its telemonitoring solution, SRETT medical has demonstrated how innovative technology can help millions of patients and we are delighted to support SRETT on their journey to international success.Andreas Ackevi, Key Account Manager at Telenor Connexion

Sleep apnea is considered to be a major global problem that can cause cardiovascular diseases, strokes and road accidents due to daytime drowsiness. Making sure that patients are compliant with their therapy is the most effective way to decrease the number of complications.


100 million patients in the world are affected by sleep apnea syndrome.

Source: World Health Organization

In France, 92% of patients treated with CPAP are satisfied to be telemonitored by a device as T4P.

Source: Federation PSAD,  January 2014


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About SRETT medical

Since 2004, SRETT provides remote monitoring systems for medical and industrial sectors. Leveraging 10 years of experience in wireless data collection, SRETT medical offers global solutions for homecare professionals, and contributes to providing uninterrupted and individualized care for patients with chronic conditions. SRETT’s continuous innovation is dedicated to enable simple, secure and efficient systems.

SRETT website

What is sleep apnea?

Sleep apnea is a chronic condition characterized by pauses of at least 10 seconds in breathing during sleep that disturb the cycle and can cause drowsiness during the day. These stops are harmful for the organism and can create cardiovascular complications. People with moderate or severe sleep apnea may be waking up hundreds of times every night without knowing it. In adults, the most common cause of sleep apnea is excess weight and obesity, often associated with soft tissue of the mouth and throat which can cause the airway to become blocked during sleep. Compared to normal-weight adults, those who are obese have a sevenfold increased risk of developing obstructive sleep apnea.

Source: Merck

3 million patients  remotely monitored worldwide

According to a research report from the analyst firm Berg Insight, around 3.0 million patients worldwide were using connected home medical monitoring devices at the end of 2013. This figure comprises all patients that were remotely monitored by a professional caregiver. Patients that use connected medical devices for personal health tracking are not included in this figure. Until 2018, Berg Insight estimates that the number of patients using connected home medical monitoring devices will grow at a compound annual growth rate (CAGR) of 44.4 percent to 19.1 million.

The main application is monitoring of patients with implantable cardiac rhythm management (CRM) devices, which with 2.0 million connections accounted for nearly two thirds of all connected home medical monitoring devices in 2013. Sleep therapy and telehealth are the second and third largest segments with 0.54 million and 0.34 million connections respectively at the end of the year.  All other device categories – including ECG, glucose level, medication adherence, blood pressure, air flow, home sleep tests, blood oxygen and coagulation monitoring – stood for less than 0.1 million connections each. Berg Insight expects that CRM will remain the single largest device segment throughout the forecast period, growing at a CAGR of 15.1 percent to 4.0 million connections by 2018. However, the CRM segment will account for just 21 percent of all connections in 2018, down from 65 percent in 2013, as the use of connectivity is growing faster in other device segments.

Berg Insight Report, 2014

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Telenor Connexion is a part of Telenor Group, one of the world’s largest mobile operators.