Instruction/ maintenance manual of the product HNS 11 Braun
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Stimuplex ® HNS 1 1 Nerve Stimulator for Regional Anaesthesia, Regional Analgesia, Neurology User manual.
Distributor: B. Braun Melsungen AG P .O . Box 1 1 20 D-34209 Melsungen Tel. (0 56 6 1) 7 1-0 Fax (0 56 6 1) 7 1-38 1 1 Manufacturer: Stockert GmbH Bötzinger Straße 72 D-79 1 1 1 Freiburg Germany.
Contents P age Checks before start-up ................................................................................................................................................ 4 Technical description ............................................
Checks before start-up The Stimuplex ® HNS 1 1 is a class lla medical device according to Council Directive 93 / 42 / EEC. An item of medical equipment may only be put into operation after the suppli.
In the operating mode, the LCD display shows the preselected stimulation current set on the controller between 0.00 and approx. 1.00 mA (in the 1 mA range) or from 0.
Technical description 6. Refer to the Safety information section before using the Stimu- plex ® HNS 1 1 on a patient. Any instrument behaving abnormally must not be put into operation. Contact customer service. Electromedical equipment may only be repaired by the manu- facturer or by an organization expressly authorized by the manu- facturer .
Operating the nerve stimulator Switching on / switching off Turn the control knob clockwise out of the O position to switch on the Stimuplex ® HNS 1 1. A brief click signals that this has taken place. At this instant, the device automatically starts a self-test.
Selecting the current range The maximum current available can be selected by pressing the ”mA (max)” button. The Stimuplex ® HNS 1 1 nerve stimulator offers a choice between a range up to 5 mA max. or up to 1 mA max. Values between 0.00 mA and 1.
The LED displays All LEDs directly assigned to the buttons are used to monitor the selected operating mode. Since LEDs require relatively high power , the Stimuplex ® HNS 1 1 switches them off after 8 seconds (see p.
Pulse LED display The small orange LED above the LCD display flashes according to the pulse frequency set (1 Hz: once per second; 2 Hz: twice per second) when current is flowing through the electrodes.
The tone Each generated pulse produces a tick . When a stimulation current flows to the electrodes (greater than 2% of the maximum stimula- tion adjustable), the tick becomes louder .
Special technical features The configuration of the electrode connection provides protection against a wrong polarity connection of the electrode cable.
Battery The battery must be regularly checked for correct charge by press- ing the ”BAT” button. While the button is pressed, the existing battery voltage appears on the LCD display . The battery should be replaced under 7 volts – as soon as the BA T symbol appears.
Cleaning and disinfecting the Stimuplex ® HNS 1 1 Use only soft, damp cloths to clean and disinfect the Stimuplex ® HNS 1 1 and the electrode cable. Water , soap or white spirits are especially suitable for this. Ensure that no moisture penetrates the Stimuplex ® HNS 1 1.
For usage of HNS 1 1 please refer to the individual local law restricts (eg. maintaining a logbook, etc.). In case of conducting safety checks on the device, please refer to the enclosed inspection sheet.
Caution Electromagnetic fields may interfere with the function of the nerve stimulator . Do not use the stimulator in the proximity of equip- ment which produces strong electromagnetic fields such as HF high frequency surgical equipment, micro wave equipment or cord- less phones.
Safety information The nerve stimulator should not be used on patients with implanted electrical devices (e. g. cardiac pacemakers) without prior consultation with an appropriate medical specialist. Possible interference with the implanted devices by the stimulation current could represent a danger to the patient.
Instruments and accessories The Stimuplex ® HNS 1 1 nerve stimulator should only be operated with the accessories and instruments mentioned on page 13, 14, 18 and 19 of this user manual. Check the accessories and instruments for serviceable condition before every occasion of use and comply with the care and disin- fection instructions supplied (p.
Product discription Canula Code number Sales unit Ø x length Stimuplex ® A needles , 30 ° bevel A 25; 24 G x 1" 0.55 x 25 mm 489425 1 25 A 25; 22 G x 1" 0.70 x 25 mm 4894539 25 A 50; 22 G x 2" 0.70 x 50 mm 4894502 25 A 50; 2 1 G x 2" 0.
P eripheral electrical nerve stimulation Principles By simplifying the accurate location of peripheral nerves, periph- eral electrical nerve stimulation (PNS) facilitates the performance of nerve and plexus blocks increasing their safety and reliability .
early detection of technical faults which could endanger the patient and place the success of the anaesthesia in jeopardy . P erforming PNS with the Stimuplex ® HNS 1 1 and the Stimuplex ® or Contiplex ® needles 1. Check the Stimuplex ® HNS 1 1. 2.
If the two values coincide, the total resistance is acceptable (impedance test) and the electric circuit is satisfactory . If the actual value is less than the set value, this indicates that the electrical resistance in the external circuit is too high.
Literature 23 Literature 1. Moore DC (1965), Regional block. A handbook for use in the clinical practice of medicine and surgery . Thomas, Springfield II. (4th ed.) 2. Ford DJ, Pither CE, Raj PP (1984), Electrical characteristics of peripheral nerve stimulators.
Appendix A Stimulation current display in the mA range Patient current Measurement display Controller display 0.00 mA 0.00 mA 0.00 mA 0.05 mA 0.05 mA ± 0.02 0.05 mA ± 0.03 0.1 0 mA 0.1 0 mA ± 0.02 0.1 0 mA ± 0.03 0.20 mA 0.20 mA ± 0.02 0.20 mA ± 0.
Appendix C 25 Stimuplex ® HNS 1 1 Nerve Stimulator Max. stimulation current as a function of tissue resistance Max. stimulation current [mA] Battery voltage [V] Stimuplex ® HNS 1 1 Nerve Stimulator Operating range Max.
Stimuplex ® D and Contiplex ® D needles (DP: DE 39 19666) Only 0.2 or 0.05 mA stimulation current required blunt 30 ° pointed 15 ° Stimulation current [mA] Threshold currents down to minimum 0.05 mA (with 1.0 ms pulse width) and minimum 0.2 mA (with 0.
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B. Braun Melsungen AG P .O. Box 1 1 20 D-34209 Melsungen Tel (0 56 6 1) 7 1- 0 Fax (0 56 61) 7 1- 38 1 1 www .bbraun.com W . 01.08.01/7 Nr . 604 3895 hospit al c are Caution: Federal (U. S. A.) law restricts this device to sale by or on the order of physicians.
An important point after buying a device Braun HNS 11 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Braun HNS 11 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Braun HNS 11 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Braun HNS 11 you will learn all the available features of the product, as well as information on its operation. The information that you get Braun HNS 11 will certainly help you make a decision on the purchase.
If you already are a holder of Braun HNS 11, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Braun HNS 11.
However, one of the most important roles played by the user manual is to help in solving problems with Braun HNS 11. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Braun HNS 11 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
