Device, system and method for generating biofeedback

A system, comprising:

• an apparatus for generating biofeedback, the apparatus comprising
• at least one interface for receiving a pulse wave signal, which represents a pressure pulse or volume pulse of a pulse wave in a blood circulation system as a function of time, and an ECG signal, the at least one interface being configured to synchronize data transmission and data acquisition between the pulse wave signal and the ECG signal,
• an evaluation device comprising an integrated semiconductor circuit that is configured to determine a pulse transit time on a basis of the pulse wave signal and the ECG signal, perform an evaluation of a pulse wave form of the pulse wave signal and generate the biofeedback depending on the pulse transit time and/or the evaluation of the pulse wave form, wherein the evaluation device is configured to determine whether there is a change in blood pressure caused by vagus enhancement or sympathetic attenuation by comparison of the pulse wave form with a reference pulse wave form, and
• an output interface for providing the biofeedback and to indicate via the output interface whether there is a change in blood pressure caused by vagus enhancement or sympathetic attenuation which improves vegetative balance of a user of the apparatus, wherein the output interface is configured to output both the biofeedback and instructions for performing a relaxation exercise, wherein the instructions for performing the relaxation exercise are generated by the apparatus using a value of an adjustable parameter that depends on the pulse transit time and/or the evaluation of the pulse wave form;
• and
• a sensor device which is couplable to said at least one interface of the apparatus and configured to detect the pulse wave signal and the ECG signal.

A method for generating biofeedback, comprising the steps of:

• receiving, by an apparatus, a pulse wave signal, which represents a pressure pulse or volume pulse of a pulse wave in a blood circulation system as a function of time, and an ECG signal by at least one interface, the at least one interface being configured to synchronize data transmission and data acquisition between sensors that capture the pulse wave signal and the ECG signal,
• determining, by the apparatus, a pulse transit time by evaluating the pulse wave signal and the ECG signal,
• evaluating, by the apparatus, a pulse wave form of the pulse wave signal to determine whether there is a change in blood pressure caused by vagus enhancement or sympathetic attenuation by comparison of the pulse wave form with a reference pulse wave form,
• generating, by the apparatus, the biofeedback depending on the pulse transit time and/or the evaluation of the pulse wave form, and
• outputting, by the apparatus, the biofeedback and instructions for performing a relaxation exercise and indicating via an output interface whether there is a change in blood pressure caused by vagus enhancement or sympathetic attenuation which improves vegetative balance of a user of the apparatus, wherein the instructions for performing the relaxation exercise are generated by the apparatus using a value of an adjustable parameter that depends on the pulse transit time and/or the evaluation of the pulse wave form.