B. Braun Stimuplex HNS 12, Руководство пользователя

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The shorter the electrical pulse (= pulse width), the faster is the rise in current to the nerve.
This allows better discrimination by the physician as to whether the needle tip is sufficiently
close to the nerve. The stimulation needle should always be connected to the negative pole.
If the needle is connected to the positive pole, higher currents are required.
The conductive tip of the stimulation needle affects the geometry of the electrical field. The
smaller the emission site of the electrons at the tip of the needle, the higher is the current
density at this point and the lower the threshold level once the nerve has been localized
exactly.
Special attention must be paid as the current density at needle tip can exceed 2 mA/cm
2
depending on stimulation settings.
The Stimuplex
®
HNS 12 is meant for long-term usage.
1.2. Intended Use
The nerve stimulator is intended for localisation of nerves in peripheral regional anesthesia.
Under no circumstances may it be used on a patient undergoing surgery.
1.3. Indications
•
Surgical interventions on the upper and lower extremity
•
Patients with high aspiration risk
•
Hemodynamically unstable patients
•
Postoperative analgesia to allow early mobilization and physical therapy
•
Replantation surgery
•
Diagnostic and therapeutic blockades
1.4. Contraindications
•
Refusal of regional anesthesia by the patient
•
Infection at the puncture site
•
Preoperatively known neurological dysfunctions
•
Anatomical abnormalities
•
Severe coagulation disorders
•
Insufficient liver function