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The Otsuka Digital Feedback Device consists of a miniaturized, wearable sensor for ambulatory recording of physiological and behavioral metrics such as heart rate, activity, body angle relative to gravity (body position), and time-stamped patient-logged events, including events signaled by co-incidence with, or co ingestion with, the ingestible sensor accessory. When the ingestible sensor is ingested, the Otsuka Digital Feedback Device is intended to log, track, and trend intake times. When co-ingested with medication, the tracking and trending of intake times may be used as an aid to measure medication adherence. The Otsuka Digital Feedback Device may be used in any instance where quantifiable analysis of event-associated physiological and behavioral metrics is desirable and enables unattended data collection for clinical and research applications.

The Otsuka Digital Feedback Device consists of 3 components: a wearable sensor, an ingestible sensor accessory, and software that aggregates, processes, and enables display of data collected by the sensors. The wearable sensor in the Otsuka Digital Feedback Device is a body-worn sensor that consists of a single-use patch known as the D-Tect wearable sensor or D-Tect Patch. The D-Tect Patch collects physiological and behavioral metrics such as heart rate, activity, body angle, and time stamped patient-logged events, including events signaled by the co-incidence with, or co-ingestion with, the ingestible sensor accessory. Note: While the device includes automated heart rate (HR) measurement, it does not provide an ECG waveform recording for display or analysis. The device is not intended to diagnose heart-related conditions and does not include alarms. HR measurement is not intended to be used in alarm system. HR data may not be accurate for patients with pacemakers. The ingestible sensor is embedded inside an inactive tablet (the pill or sensor-enabled pill) for ease of handling and swallowing. After the ingestible sensor reaches the stomach, it activates and communicates its presence with a unique identifier to the wearable sensor. When the ingestible sensor is co-ingested with medication, the Otsuka Digital Feedback Device is intended to log, track, and trend medicine intake times to measure medication adherence. The software on the general computing device receives the data from the wearable sensor for further processing and analysis of metrics. The processed data is then sent to the user interface for display, as well as being saved in a local record database for storage. The software component includes firmware running on the wearable sensor that collects and records the data from the sensors and a software that receives data from the wearable sensor for further analysis, processing, storage, and display to the user. For purposes of this 510(k), the changes from the predicate device (Otsuka Digital Feedback Device-RW, K223463) to the Otsuka Digital Feedback Device with D-Tect Patch (the device subject of this 510[k]) are the wearable sensor and the software for the user interface. The ingestible sensor remains the same as the predicate device.

Rejoyn is a prescription digital therapeutic for the treatment of Major Depressive Disorder (MDD) symptoms as an adjunct to clinician-managed outpatient care for adult patients with MDD aged 22 years and older who are on antidepressant medication. It is intended to reduce MDD symptoms.

Rejoyn (also known as CT-152) is a digital therapeutic smartphone application (app) for the treatment of Major Depressive Disorder (MDD) symptoms. Rejoyn is a prescription smartphone app-based digital therapeutic administered to a user via the user's smartphone device (running Apple iPhone operating system [iOS®] or Android™ operating system [OS]), which delivers a proprietary interactive cognitiveemotional and behavioral therapeutic intervention. The core components of Rejoyn are the Emotional Faces Memory Task (EFMT) exercises, brief cognitive behavioral therapy (CBT)-based lessons to learn and apply key therapeutic skills, and short message service (SMS) text messaging to reinforce CBT-based lesson content and to encourage engagement with the app. It is intended for the treatment of MDD symptoms as an adjunct to clinician-managed outpatient care for adult patients with MDD aged 22 years and older. It is intended to reduce MDD symptoms. Rejoyn is designed for use as an adjunct to clinician-managed outpatient care over a period of 6 weeks for the treatment of MDD symptoms, followed by a 4-week extension period where CBT-based lesson content will be accessible but no new therapeutic content or EFMT exercises will be available. Rejoyn is not intended to be used as a stand-alone therapy or as a substitution for the patient's clinician prescribed medications.

The Otsuka Digital Feedback Device-RW consists of a miniaturized, wearable sensor for ambulatory recording of physiological and behavioral metrics such as heart rate, activity, body angle relative to gravity (body position), and timestamped patient-logged events, including events signaled by the co-incidence with, or co-ingestible sensor accessory. When the ingestible sensor is ingested, the Otsuka Digital Feedback Device-RW is intended to log, track and trend intake times. When co-ingested with medication, the tracking of intake times may be used as an aid to measure medication adherence. The Otsuka Digital Feedback Device-RW may instance where quantifiable analysis of event-associated physiological and behavioral metrics is desirable, and enables unattended data collection for clinical and research applications.

The Otsuka Digital Feedback Device-RW consists of three components: a wearable sensor, an ingestible sensor accessory, and software that aggregates, processes and enables display of data collected by the sensors. The wearable sensor is a body-worn sensor (also called the patch) that collects physiological and behavioral metrics such as heart rate, activity, body angle, and time-stamped patient-logged events, including events signaled by the co-incidence with, or co-ingestion with, the ingestible sensor accessory. The wearable sensor in the Otsuka Digital Feedback Device-RW is a 2-component patch known as the RW2 wearable sensor or RW2 patch. The ingestible sensor is embedded inside an inactive tablet (the pill or sensor-enabled pill) for ease of handling and swallowing. After the ingestible sensor reaches the stomach, it activates and communicates its presence with a unique identifier (ID) to the wearable sensor. When the ingestible sensor is co-ingested with medication, the Otsuka Digital Feedback Device-RW is intended to log, track and trend medicine intake times to measure medication adherence. The software on a general computing device (eg, mobile device) receives the data from the body-worn sensor or patch for further processing and analysis of the behavioral and physiological metrics. The processed data is then sent to the user interface (UI) for display as well as being saved in a local record database for storage.