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Summary of Contents for Braun Stimuplex HNS 11
- Page 1 ® Stimuplex HNS 11 Nerve Stimulator for Regional Anaesthesia, Regional Analgesia, Neurology User manual...
- Page 2 Manufacturer: Distributor: Stockert GmbH B. Braun Melsungen AG Bötzinger Straße 72 P.O. Box 11 20 D-79111 Freiburg D-34209 Melsungen Germany Tel. (0 56 61) 71-0 Fax (0 56 61) 71-38 11...
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Page 3: Table Of Contents
Contents Page Checks before start-up ..............................4 Technical description ..............................6 Operating the nerve stimulator .......................... 7 Switching on / switching off ..............................7 Selecting the pulse frequency ............................... 7 Selecting the pulse width ................................ 7 Selecting the current range ..............................8 Checking the battery voltage .............................. -
Page 4: Checks Before Start-Up
Checks before start-up ® The Stimuplex HNS 11 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 equipment with the aid of the user manual. - 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- ®...
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Page 6: Technical Description
Technical description 6. Refer to the Safety information section before using the Stimu- ® plex HNS 11 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. -
Page 7: Operating The Nerve Stimulator
Operating the nerve stimulator Switching on / switching off Turn the control knob clockwise out of the O position to switch on ® the Stimuplex HNS 11. 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. -
Page 8: Selecting The Current Range
Selecting the current range The maximum current available can be selected by pressing the ® ”mA (max)” button. The Stimuplex HNS 11 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. -
Page 9: The Led Displays
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 11 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 current set (... -
Page 10: Pulse Led Display
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 actually flowing stimulation current. -
Page 11: The Tone
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 - Techni- ®... -
Page 12: Special Technical Features
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 small stimulation electrodes. -
Page 13: Battery
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 BAT symbol appears. When the battery voltage drops below 6 V, the nerve stimulator stops operating. -
Page 14: Cleaning And Disinfecting The Stimuplex Hns 11
® Cleaning and disinfecting the Stimuplex HNS 11 ® Use only soft, damp cloths to clean and disinfect the Stimuplex HNS 11 and the electrode cable. Water, soap or white spirits are especially suitable for this. Ensure that no moisture penetrates the ®... -
Page 15: Safety Checks / Local Law Restricts
For usage of HNS 11 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. -
Page 16: Caution, Notice
All accessories have to be visually inspected at regular time inter- vals. The insulation of the cables must not exhibit any damage. Only original accessories from B. Braun labelled with the CE sign should be used. Regarding the disposal of the nerve stimulator and its accessories you should refer to the corresponding regulations in your country. -
Page 17: Safety Information
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 be applied in the area of injuries. -
Page 18: Instruments And Accessories
Instruments and accessories ® The Stimuplex HNS 11 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 4894251 A 25; 22 G x 1" 0.70 x 25 mm 4894539 A 50; 22 G x 2" 0.70 x 50 mm 4894502 A 50;...
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Page 20: Peripheral Electrical Nerve Stimulation
Peripheral 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 information from the patient concerning paraesthesia is eliminated, and the danger of a mechanical nerve lesion (8) is largely excluded. -
Page 21: Performing Pns With The Stimuplex
early detection of technical faults which could endanger the patient and place the success of the anaesthesia in jeopardy. ® ® ® Performing PNS with the Stimuplex HNS 11 and the Stimuplex or Contiplex needles ® 1. Check the Stimuplex HNS 11. - 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.
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Page 23: Literature
Literature 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. -
Page 24: Appendices A To D
Appendix A Stimulation current display in the mA range Patient current Measurement display Controller display Patient current Measurement display Controller display 0.00 mA 0.00 mA 0.00 mA 0.00 mA 0.00 mA 0.00 mA 0.05 mA ± 0.02 0.05 mA ± 0.03 0.50 mA ±... - Page 25 Appendix C Appendix C ® Stimuplex HNS 11 Nerve Stimulator Operating range Max. stimulation voltage [V] Operating range Battery voltage [V] ® Stimuplex HNS 11 Nerve Stimulator Max. stimulation current as a function of tissue resistance Max. stimulation current [mA] Battery voltage [V]...
- Page 26 Appendix D Current density Stainless Bare and insulated needles steel needle Stimulation current Bare, [mA] uncoated needles Plastic insulation Coated needles bevel uncoated Stimuplex ® ® Contiplex Distance from the nerve [mm] ® ® Stimuplex D and Contiplex D needles (DP: DE 3919666) Only 0.2 or 0.05 mA stimulation current required blunt...
- Page 28 Caution: B. Braun Melsungen AG Federal (U. S. A.) law restricts P.O. Box 11 20 this device to sale by or on the order D-34209 Melsungen of physicians. Tel (0 56 61) 71- 0 Fax (0 56 61) 71-3811 www.bbraun.com...