Component Maintenance and Cleaning Charging the Batteries When a system component has a low battery, the Control Unit will beep and the component indicator light will flash YELLOW. See Figure 43. When an RF Stim Unit battery charge level is low, the RF Stim Unit status light will also flash YELLOW. See inset in Figure 43. When the Gait Sensor battery is low, the Control Unit low-battery audio alert will become more persistent as the battery weakens.
NESS L300 Plus To charge the batteries in the Control Unit and RF Stim Units: 1. Open the cover of the charging ports (found at the bottom of the Control Unit and at the top of the RF Stim Units). See Figure 44. Cover Thigh RF Stim Unit Charging Port Cover L300 RF Stim Unit Charging Port Control Unit Charging Port Cover Figure 44: Charging ports: Control Unit and RF Stim Units.
2. Connect the system charger set to the Control Unit and both RF Stim Units. See Figure 45. System Charger Set Note: 0.6-cm (1/4-in.) gap is normal Figure 45: Charging setup.
NESS L300 Plus 3. Plug the system charger set into a wall socket. 4. Verify that the rotating GREEN circle appears in the Control Unit digital display, and the status light on the both RF Stim Units is alternately flashing YELLOW and GREEN. 5. The charging process will continue until a horizontal GREEN line appears in the Control Unit digital display and the status light on both RF Stim Units is solid GREEN. See figures 46 and 47. The charging process should last approximately three hours.
Note: If the Control Unit battery is completely discharged, a “b” (for boot) will flash for a few seconds in the Control Unit digital display when charging is started. Rotating GREEN Circle: Control Unit Charging Horizontal GREEN Line: Control Unit Fully Charged Figure 46: Control Unit charging displays. Status Light Alternately Flashing GREEN and YELLOW: RF Stim Unit Charging Status Light Solid GREEN: RF Stim Unit Fully Charged Figure 47: RF Stim Unit charging displays.
NESS L300 Plus Replacing the Batteries Replacing the RF Stim Unit Batteries Each RF Stim Unit has a rechargeable battery. The battery should be replaced approximately every two years by a Bioness certified technician. Replacing the Gait Sensor Battery The battery in the Gait Sensor is not rechargeable. It should be replaced approximately every six months. The Gait Sensor indicator on the Control Unit will begin to flash YELLOW approximately two weeks before the Gait Sensor completely loses its charge.
2. Note the “+” orientation of the old battery. 3. Remove the old battery and properly dispose of it according to your local environmental regulations. 4. Insert the new battery. The “+” should face outward. 5. Slide the cover back into place, and tighten the screws. 6. Press the Gait Sensor pressure sensor to activate the sensor. Remove the old battery, and properly dispose of it according to your local environmental regulations.
NESS L300 Plus 4. Insert the new rechargeable battery in the proper "+/-" orientation. 5. Slide the cover into place, and tighten the screw. 6. Fully charge the new battery before first use. Caution: Use of a non-rechargeable AAA battery can damage the Control Unit. Battery Cover Screw Battery Note: If you are unable to replace the battery, your local watchmaker or battery supply store should be able to assist. Control Unit Figure 49: Replacing the Control Unit battery.
Replacing the L300 Hydrogel Electrodes You will need to replace the hydrogel electrodes at least every two weeks. Caution: Use only NESS L300 electrodes supplied by Bioness. Caution: Do not use your NESS L300 without electrodes. To replace the hydrogel electrodes: 1. Turn off the L300 Plus Control Unit. 2. Gently pull the used L300 hydrogel electrodes from the hydrogel electrode bases. Be careful not to detach the electrode bases from the L300 FS Cuff. See Figure 50. 3.
NESS L300 Plus 4. Separate the two new hydrogel electrodes along the perforation. See Figure 51. Figure 51: Separating the new hydrogel electrodes. 5. Split the two-piece covers on each new electrode and discard them. See Figure 52. Figure 52: Splitting the L300 hydrogel electrode two-piece covers.
6. Attach the grid side of the hydrogel electrodes to the hydrogel electrode bases, and then press firmly. See Figure 53. Figure 53: Attaching the hydrogel electrodes to the hydrogel electrode bases. 7. Remove the covers from the hydrogel electrodes. See Figure 54. Figure 54: Removing the covers from the hydrogel electrodes. Note: Save the covers. Always reapply the covers between uses. When reapplying the covers, make sure the Bioness logo faces up.
NESS L300 Plus Replacing the L300 Cloth Electrodes L300 cloth electrodes and cloth electrode bases are an option for those who experience a skin sensitivity to the hydrogel electrodes. First fittings will be done by your clinician. Afterward, you will need to change the cloth electrodes at least every two weeks and the cloth electrode bases every one to two years. Caution: Use only NESS L300 cloth electrodes supplied by Bioness. Caution: Do not use your NESS L300 without electrodes.
3. If necessary, clean the cloth electrode bases with a damp cloth. Do not use a chemical-based cleaning substance. 4. Wet the new cloth electrodes with tap water until they are saturated. See Figure 56. 5. With a soft cloth, gently wipe or blot excess water off the back (side with the snap) of the cloth electrodes. See Figure 57. 6. Attach the L300 cloth electrodes to the L300 cloth electrode bases. See Figure 58.
NESS L300 Plus Figure 57: Blotting the snap side of the cloth electrodes. Figure 58: Attaching the cloth electrodes to the cloth electrode bases.
Replacing the L300 Electrode Bases If you are switching from L300 hydrogel electrodes to L300 cloth electrodes, or from L300 cloth electrodes to L300 hydrogel electrodes, you will need to be seen by a qualified clinician for a first fitting. Your clinician will need to fit the L300 electrode bases and adjust your stimulation settings. Afterward you will need to replace the L300 electrode bases after one to two years of use. Contact Bioness to purchase replacement electrode bases.
NESS L300 Plus 3. Disconnect the electrode base snaps from the plug holes. See Figure 60. 4. Remove the used L300 electrode bases from the L300 FS Cuff. See Figure 61. Attach the new L300 electrode bases where the previous bases were attached. See Figure 62. Figure 60: Disconnecting the electrode base snaps. Figure 61: Removing the used L300 electrode bases.
5. Connect the electrode base snaps to the plug holes. See Figure 63. 6. Recover the wires and snaps with the wire concealers, if desired. Figure 62. Attaching the new L300 electrode bases. Figure 63: Connecting the electrode base snaps to the plug holes.
NESS L300 Plus Replacing the Thigh FS Cuff Cloth Electrodes The Thigh FS Cuff uses two cloth electrodes: a larger one for the proximal panel and a smaller one for the distal panel. Caution: Use only NESS L300 Plus cloth electrodes supplied by Bioness. Caution: Do not use your NESS L300 Plus without electrodes. To replace the cloth electrodes: 1. Turn off the Control Unit. 2. Gently unsnap the cloth electrodes and remove them from the Thigh FS Cuff. See Figure 64.
3. Wet the new cloth electrodes with tap water until they are saturated. See Figure 65. 4. With a soft cloth, gently wipe or blot excess water off the back (side with the snap) of the cloth electrodes. See Figure 66. 5. Attach the Thigh FS Cuff cloth electrodes to the Thigh FS Cuff. See Figure 67. Note: Remove and re-wet the cloth electrodes every time you remove the Thigh FS Cuff from your leg for more than one hour, and after every four hours of use.
NESS L300 Plus Figure 66: Blotting the snap side of the cloth electrodes. Figure 67: Snapping the cloth electrodes to the Thigh FS Cuff.
Removing the RF Stim Units The only time you should remove an RF Stim Unit is to clean the FS Cuff or replace the RF Stim Unit. To remove the RF Stim Units: 1. Turn off the Control Unit. 2. Pull the top of the RF Stim Unit away from the cradle. See Figure 68. If the fit is too tight, open the flexible cover over the RF Stim Unit charging port for a better grasp. 3. Remove the bottom of the RF Stim Unit from the cradle. Cradle RF Stim Unit Figure 68: Removing the RF Stim Unit.
NESS L300 Plus Cleaning the System Components All NESS L300 components may be cleaned by carefully wiping them with a damp cloth. The electrical components are not waterproof. Do not immerse them in water. The L300 FS Cuff is the only component that can be immersed in water to clean. Bioness recommends cleaning the L300 FS Cuff when replacing the hydrogel electrodes, so that the electrodes do not dry out. To clean the L300 FS Cuff: 1. Remove the RF Stim Unit. 2.
Electronically Registering New Components When a NESS L300 Plus Control Unit, an RF Stim Unit, or a Gait Sensor is replaced, the new component must be electronically registered to the other NESS L300 Plus components for the system to communicate wirelessly. NOTE: Components can only be successfully registered once. Additional attempts will elicit an error indication. Registering a New L300 Plus Control Unit Setup 1.
NESS L300 Plus Press and hold the mode and minus buttons for three seconds. New Unregistered Control Unit Figure 69: Registering a new Control Unit. 2. Simultaneously press and hold for three seconds the mode and minus buttons. See Figure 69. The Control Unit will beep when registration begins. 3. The Control Unit digital display will show two alternating GREEN arches while registration is in process. See Figure 70. Registration of a new Control Unit may take up to four minutes. 4.
Registration in Process Registration Complete Registration Error Figure 70: Registration digital displays. 6. After registration is complete, turn on your NESS L300 Plus System. If the new Control Unit is registered, the RF Stim Units will turn on. If you see an RF failure indication between the Control Unit and RF Stim Units, wait 20 minutes for the RF Stim Units to enter energy-saving mode, and then repeat the registration procedure. 7.
NESS L300 Plus Registering a New RF Stim Unit Set-Up 1. Turn off the L300 Plus Control Unit. 2. Remove the old RF Stim Unit from the cradle of the FS Cuff. Caution: Do not turn on the Control Unit if the RF Stim Unit is not in the cradle. 3. Put the old RF Stim Unit in an envelope for shipment to Bioness. Place it at least 30 feet from the components you are registering. 4. Locate the System ID Number on the NESS L300 Plus carrying case (for example, A334).
1. Place the FS Cuff with the attached new RF Stim Unit, the other FS Cuff with attached RF Stim Unit, the Control Unit, and the Gait Sensor close to each other on a table but not touching. 2. Make sure all other NESS L300 Plus System components are at least 30 feet from the NESS L300 Plus components you are registering. Registration 1. Make sure the Control Unit has been off for 20 minutes, and that the RF Stim Units are in energy-saving mode. 2.
NESS L300 Plus 3. The Control Unit digital display will show two alternating GREEN arches while registration is in process. Registration should take several seconds to complete. 4. When registration is complete, (“C” for complete) will appear in the digital display and the RF Stim Unit indicator will turn GREEN for a few seconds. The Control Unit will beep. 5. If (“E” for error) appears in the digital display, an error has occurred. Repeat the procedure.
Registration (Important: Read Steps 1–4 Before Starting) 1. Turn off the Control Unit. 2. Simultaneously press and hold for three seconds the mode and minus buttons on the Control Unit. The Control Unit will beep when registration begins. 3. The Control Unit digital display will show arches while registration is in process. two alternating GREEN 4. Within 15 seconds of initiating the registration procedure, repeatedly press and release the pressure sensor. 5.
NESS L300 Plus 6. After registration is complete, turn on the system and select gait mode. Press and release the pressure sensor. If the new Gait Sensor is registered, the mode button will flash YELLOW rapidly for four seconds. 7. Locate the System ID Number on the NESS L300 Plus carrying case (for example, A334). Write the number on the small label on the back of the new Gait Sensor. See Figure 75. This number identifies which system the sensor is registered to.
11 Troubleshooting If you have any questions or concerns, please contact the NESS L300 Plus Technical and Clinical Support Department at (800) 211-9136, Option 3. When charging the L300 Plus System, how will I know when the batteries are fully charged? •• When the L300 Plus Control Unit is fully charged, a GREEN horizontal line will appear in the Control Unit digital display. •• When the RF Stim Units are fully charged, the on the RF Stim Units will be solid GREEN.
NESS L300 Plus Stimulation works in training mode but not in gait mode. When I turn on gait mode I hear a beep, the RF Stim Units and Gait Sensor indicators on the Control Unit alternately flash RED, and “E” flashes in the digital display. •• The Gait Sensor and RF Stim Unit are not communicating. The Gait Sensor is probably asleep. Apply pressure to the Gait Sensor pressure sensor. If this does not resolve the problem, the battery may be depleted or the Gait Sensor may be faulty.
I hear a beep, the RF Stim Unit indicator on the Control Unit flashes RED, and the stimulation intensity level flashes in the Control Unit digital display. If you feel stimulation but the intensity level seems weaker than usual and ankle movement is unsatisfactory, electrode contact may be compromised. •• Turn off the Control Unit and remove the FS Cuff. •• Thoroughly cleanse the skin, removing dead cells and oils. •• If you are using hydrogel electrodes, remove and replace the worn electrodes.
NESS L300 Plus The electrodes or electrode bases are frayed, peeling, damaged, or falling off the FS Cuff. •• Replace any worn or damaged electrodes or electrode bases. How will I know when the Gait Sensor battery charge level is low? •• A Gait Sensor battery will last for approximately six months, and then it will need to be replaced. When the Gait Sensor battery charge level is low, the Gait Sensor indicator on the Control Unit will flash YELLOW and the Control Unit will emit an audio alert.
My ankle is not moving (or my foot does not lift satisfactorily), and the system is not indicating any errors. •• Turn off the Control Unit and reposition the FS Cuff. Make sure the strap is snug and the FS Cuff is secure. Stimulation is inconsistent when I am walking, but the system is not indicating any errors. •• Stop walking and shift your weight from side to side.
NESS L300 Plus I tried the registration procedure and saw a “C” immediately, but I never saw the alternating arches in the digital display. The replacement component is not working. •• Clinician mode (for use by clinicians only) may have been started instead of the registration process. Clinician mode is started by pressing the minus and on/off buttons on the Control Unit. Registration is started with the Control Unit off, and then by pressing the minus and mode buttons on the Control Unit.
Component Technical Specifications Control Unit Specifications Classification Internally powered, continuous operation Operation Modes Gait, Training, Clinician, and Standby Battery Type Rechargeable AAA NiMH 1.
NESS L300 Plus RF Stim Unit Specifications Classification Internally powered, continuous operation with type BF applied parts Operating Voltage 3.7 V Battery Type Proprietary rechargeable Li-Ion (Lithium Ion) 3.7 V, 700 mAh Indications Status (fault, battery, charging) and Stimulation LEDs “Beeps” for audio alerts Dimensions Length: 74 mm (2.9 in.) Width: 43 mm (1.7 in.) Height: 15 mm (0.6 in.) Weight 50 grams (1.6 oz.
Symmetric Asymmetric Positive Pulse Duration (µsec) 100 200 300 100 200 300 Negative Pulse Duration (µsec) 100 200 300 400 800 1200 Inter-Phase Interval (µsec) Total Pulse Duration (µsec) 50 250 450 0 650 500 Max Load 5000 ohm (Subject to max voltage limitation) Pulse Repetition Rate 20–45 Hz, 5-Hz resolution 1000 1500 Gait Parameters Ramp Up 0–2 seconds, 0.1-second resolution Ramp Down 0–2 seconds, 0.
NESS L300 Plus FS Cuff Specifications Material Fabric-Polymer Fits Limb Circumference 29–51 cm (11–20 in.) Dimensions Height: 160 mm (6.3 in.) Width: 100 mm (3.9 in.) Depth: 125 mm (4.9 in.) Weight Approximately 150 grams (4.8 oz.) Intelli-Sense Gait Sensor Specifications Classification Internally powered, continuous operation with type BF applied part(s) Battery Type Lithium coin cell, CR2430, 280 mAh Dimensions of the Transmitter Length: 80 mm (3.2 in.) Width: 50 mm (2.0 in.
Power Supply Specifications Use medical Class II safety approved power supply provided/approved by Bioness with the following ratings: Input Voltage 100–240 V AC Current 200 mA Frequency 50–60 Hz Output Voltage 5 V ± 5% Current 1300 mA Note: Do not use the Control Unit or RF Stim Unit while charging. Wireless Link Specifications Frequency Band 2.4 GHz, ISM band Transmission Power Complies with FCC 15.247 (for U.S.
NESS L300 Plus Hydrogel Electrode and Electrode Base Specifications Electrodes Electrode Bases 122 User’s Guide Two, 45-mm (1.77-in.
