Nerve impulses are just like electrical impulses in electric circuit. They are even transmitted in a similar way. Different ions form different polarity on different sides of nerve. Outside part of the nerve is charged positively and inner part of the nerve is charged negatively. And when the signal is transmitted from the brain to muscles or vice versa depolarization happens. But all this can be caused by other means, for example, negatively charged electrons can also cause depolarization if the current flows through the nerve. This is the main principle of nerve block stimulator operation. Nerve block stimulators are usually used to ease the pain of a different origin. A nerve block stimulator sends electrical impulses (these impulses can be different and cause different results) to nerves, which allow lessening the pain. As long as the nerves are being affected by a nerve block stimulator, any sort of pain can be easily relieved without drugs. Such a method can be especially helpful to those people who suffer from chronic pain. Depending on electrical impulses' intensity, frequency and durability, the effect of pain relief can be regulated. So, the patient can easily control the pain. And unlike the drugs, nerve block stimulator impulses' intensity can be increased greatly without any risk of overdose. When the use of a nerve stimulator is prescribed patient needs to contact a nerve stimulators' specialist to ensure the correct use of this device because there are many possible mistakes which people can make. And those mistakes with nerve stimulator can be very dangerous. So, at first, a regular control of the specialist is needed. Modern models of nerve block stimulators are very small and usually powered by two batteries. That allows staying mobile and keeping the active lifestyle. The dosage of a nerve block stimulator effect can be easily changed by the control buttons on the front panel of the device. There are many different medical companies that produce numerous nerve block stimulators. Among these companies is B. Braun Medical Company, one of the leaders in a sector of nerve stimulation. It produces the whole family of nerve stimulating devices under the brandname "Stimuplex". The latest model of this family is Stimuplex HNS11. This nerve stimulator has several new features, like two displaying modes, to indicate the current. But the most interesting option that is offered in stimuplex hns11 nerve block stimulator is that it allows controlling the duration of electrical pulses - 0.1ms, 0.3ms, and even 1.0ms electrical impulses can be achieved with this device. But usually patients do not care about the physical principles that run the device they use as the main goal for them is to lessen the pain and with nerve stimulation this goal can be achieved effectively. Although a nerve block stimulator doesn't cure the actual reason that causes pain and only makes it lower, it gives the patient an opportunity to live a normal life without the terrible pain or need to take different sorts of pain killers that have numerous side effects.