For Routine Use In All Otologic Procedures n Tympanoplasty n Mastoidectomy

For use in soft tissue and tumor dissection n Parotidectomy

For stimulation of motor nerves

WR Medical Electronics Co. • 1700 Gervais Avenue, Maplewood, MN 55109 USA • 800.321.6387 • www.wrmed.com

n Provides early identification of the facial nerve by using electrical stimulators in soft tissue, tumor, and bone.

n Signals unintentional mechanical stimulation of the facial nerve during surgery

n Allows mapping of the facial nerve in the temporal one or tumor using electrical stimulation

n Reduces mechanical trauma to the facial nerve during tumor dissectionn Provides a method for evaluation and prognosis of facial nerve function at

the conclusion of surgeryn Enhances patient care

FACIAL NERVE MONITOR/STIMULATOR

Preserve facial nerve function and enhance patient care with the Silverstein Facial Nerve Monitor/Stimulator. Intraoperative facial nerve monitoring has been shown to reduce the probability of iatrogenic injury to the facial nerve during surgery. The Silverstein provides a simple, non-invasive method of providing the best patient care for your ear surgery patients.

A strain-gauge sensor placed in the corner of the patient’s mouth detects facial contractions, signified by an audible signal, and a sterile tip probe delivers precise amounts of current to the facial nerve during surgery.

Silverstein™ Model S8

The Cheek Muscle Sensor attaches easily to the patients mouth, and detects movements caused by nerve activity, indicated by an audible sound. No false positives, no interpretation of inapplicable noises.

Copyright © 2018 by WR Medical Electronics Co. All rights reserved. E59, rev. 06/18.

SALES SPECIFICATION SHEET - Silverstein, Model S8

PHYSICAL DIMENSIONS Height: 5.5 in. (13.97 cm.)Width: 10.25 in. (26.04 cm.)Depth: 10 in. (25.4 cm.)Weight: 6.1 lbs. (2.76 kg.)

POWER REQUIREMENTSPower: Internal batteries are rechargable

WR Medical Part # : 3442 (charger)RATED AC INPUT RATED DC OUTPUT100 - 240 VAC, 50/60 Hz +24VDC - 500mA

ENVIRONMENTOPERATING TRANSPORT AND STORAGE

Temperature: 20 - 25.6 degrees C 0 - 40 degrees CRelative Humidity: 30 - 85% (non condensing) 0 - 80% (non condensing)

Atmospheric Pressure: N/A 300 hPa – 1060 hPa

STIMULATOR SPECIFICATIONSPulse Width: 0.0002 seconds +20 microseconds

Pule Time Off: 0.1998 secondsPulse Frequency: 0.200 sec at ±5 milliseconds

Hertz: 5Dial Accuracy: Linear down to 0.15 mA, residual current of 0.05 mA at 0.0 indicated

Current Output: 0.0 to 10.0 milliamperes (mA) measured across a 1K ±1% resistive load. Tolerance at 0.0 indicated, with a residual current of 0.05 mA, is ±0.005 mA. Tolerance at 10.0 mA is ±0.4 mA.

REGULATORYFDA MDL Number: D009017FDA Device Class: IIHealth Canada License Number : 36768

WR Medical Electronics Co.1700 Gervais Avenue

Maplewood, MN 55109www.wrmed.com | 651-604-8400

Copyright © 2018 by WR Medical Electronics Co.. All Rights Reserved. CN73, Rev. 07/18.