Implantable Vagus Nerve Stimulator (VNS)

Epilepsy is currently one of the most common diseases of the nervous system diseases, causing severe damage to patients' physical and mental health. There are approximately 9 million patients with epilepsy in China, of which 20% -30% are refractory epilepsy, and seizures cannot be effectively controlled through regular drug treatment.

?

The implanted vagus nerve stimulator (VNS) stimulates the neck vagus nerve by sending electrical pulse signals, which is transmitted to the brain of patients with epilepsy and suppresses seizures. It is mainly suitable for adjuvant treatment of patients with refractory epilepsy.

Implantable vagus nerve stimulator (VNS) consists of three parts: stimulator component, electrode lead component and nerve regulation program controller.

?

The VNS system developed by Rishena Medical has a remote control function, which allows the patient's program controller to be controlled by the doctor's parameters at home, reducing the trouble of patients traveling to and from the hospital multiple times; by establishing a control center, it ensures that the control is more efficient and portable. Rishena VNS is manufactured with precision technology, ultra-low power consumption, long service life, soft and firm electrode leads, and high comfort.

?

VNS surgery is minimally invasive. The surgery is performed under general anesthesia: the electrode lead is spirally wound around the patient's left neck vagus nerve. The stimulator is connected to the electrode lead and placed under the skin on the left scapula. The external program controller can perform parameter setting, status query, and turn on and off stimulation of the stimulator through wireless communication. At the same time, there is a remote program control function, which allows patients to accept doctor's parameter adjustment at home.

?

VNS can significantly reduce the frequency of seizures after surgery, with an overall effective rate of 53% -63% (effectiveness: 50% or more reduction in the number of seizures); meanwhile, the effect of VNS significantly increases with the prolonged stimulation time; studies have shown that, VNS stimulation can also effectively improve the mood of patients.