Muscle relaxation monitoring device and medical device system

A medical device system comprising:

• a muscle relaxation monitoring device configured to monitor a muscle relaxation degree of a patient;
• and
• a medical device configured to communicate with the muscle relaxation monitoring device, wherein
• the muscle relaxation monitoring device includes
• a stimulator configured to apply a stimulation having a predetermined current value and a predetermined pulse width value to a nerve of a living body,
• a physiological response detector configured to detect a physiological response, and
• a communication unit configured to output information to the medical device,
• the stimulator
• applies a first stimulation having a first current value and a first pulse width value, and applies a second stimulation having a second current value and a second pulse width value after applying the first stimulation, and
• compares the physiological response detected when the first stimulation is applied with the physiological response detected when the second stimulation is applied, and adjusts the predetermined current value and/or the predetermined pulse width value to be applied to the living body,
• the communication unit
• outputs comparison information on a result of the comparison to the medical device, and
• the medical device
• includes a medical device controller that performs a control according to the comparison information output from the communication unit.