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Braun HNS 11 manual

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Table of contents for the manual

  • Page 1

    Stimuplex ® HNS 1 1 Nerve Stimulator for Regional Anaesthesia, Regional Analgesia, Neurology User manual[...]

  • Page 2

    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[...]

  • Page 3

    Contents P age Checks before start-up ................................................................................................................................................ 4 Technical description ...............................................................................................................................................[...]

  • Page 4

    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 supplier has subjected the equipment to a function test on site and has instructed the person responsible for operating the equipment in the use of the equi[...]

  • Page 5

    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 0.00 to approx. 5.00 (in the 5 mA range). In the operating mode, the Stimu- plex ® HNS 1 1 shows the stimulation current actually flowing via the stimulation electrodes through the tiss[...]

  • Page 6

    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 . The[...]

  • Page 7

    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. This includes switching on all segments of the LCD display as a visual check. When the[...]

  • Page 8

    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 1.00 mA can be selected in the 1 mA range with the on/off control knob . This also allows precise adj[...]

  • Page 9

    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. 6 Section 7). The individual displays have the following significance: Current display mode The LCD display shows the stimulation cu[...]

  • Page 10

    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. At the same time, a louder tick can be heard. The LCD display According to the display mode selected, the LCD display shows the setting for , or the[...]

  • Page 11

    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 . If the stimulation current flowing exceeds the current set, then taking into account the measuring tolerance (see page 12 - T echni - cal data - Measuring tolerance),[...]

  • Page 12

    Special technical features The configuration of the electrode connection provides protection against a wrong polarity connection of the electrode cable. This new type of plug connection system ensures correct polarity of the electrodes at all times. A high stimulation voltage is associated with an unusually wide range of adjustment with extremely s[...]

  • Page 13

    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. When the battery voltage drops below 6 V, the nerve stimulator stops operatin[...]

  • Page 14

    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. Use only wet disinfection, no spray disinfection! Avoid condensation! Whit[...]

  • Page 15

    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. 15[...]

  • Page 16

    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. 16 Notice The cables of the nerve stimulator Stimuplex ® HNS 1 1 sho[...]

  • Page 17

    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. The adhesive electrodes must not b[...]

  • Page 18

    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.[...]

  • Page 19

    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" 0.80 x 50 mm 4894375 25 A 1 00; 21 G x 4" 0.80 x 100 mm 4894260 25 A 150; 20 G x 6"[...]

  • Page 20

    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 . The old rule ”no paraesthesia - no anaesthesia” (1) loses its valid- ity , because informa[...]

  • Page 21

    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. Check the skin electrode (ECG adhesive electrode) (the conduc- tive gel must not have dried) and [...]

  • Page 22

    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. The cause must be found e. g. adhesive electrode too dry , skin resistance too high, broken cabl[...]

  • Page 23

    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. Implications for nerve Iocalizati- on. Reg Anesth 9:73. 3. Ford DJ, Pither CE, Raj PP ([...]

  • Page 24

    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 ± 0.03 0.30 mA 0.30 mA ± 0.02 0.30 mA ± 0.03 0.40 mA 0.40 mA ± 0.02 0.40 mA ± 0.03 0.60 mA 0.60 [...]

  • Page 25

    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. stimulation voltage [V] Battery voltage [V] Operating range Appendix C[...]

  • Page 26

    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 0.1 ms pulse width) allow reliable location of nerves. Fully insulated needle with bare tip Stim[...]

  • Page 27

    [...]

  • Page 28

    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.[...]