Blog Entries in SENSUS Operation

How can SENSUS detect when I’m sleeping? Why does it matter?

Thursday, November 13th, 2014

SENSUS can detect the orientation of your lower leg, thanks to a built-in piece of hardware, called an accelerometer.  If your leg is in a horizontal, or near-horizontal position for an extended period of time (1-2 hours or more), SENSUS will know that that you are most likely asleep.  If your device is set to automatically restart therapy every other hour, SENSUS will reduce the therapeutic intensity you experience during sleep by roughly 20%.  This reduction in intensity should allow you to retain the pain relief benefits of SENSUS, but minimize disruptions to your sleep as the device cycles in and out of active therapy sessions throughout the night.

If you are watching a little TV with your feet up and get up periodically, the sleep detection will not impact your normal therapeutic intensity level.  In any case, you will be able to tell whether your device is in sleep mode by looking at the blinking light on the front of the device.  The green light will blink once per second during a normal therapy session, but only once every five seconds while it is in sleep mode.  You don’t need to do anything special to get your device out of the reduced sleep intensity mode.  Once you are up and about for more than a few minutes, the device will automatically revert to your normal therapeutic intensity the next time it restarts a therapy session.  However, we do recommend that you remove your device for a period of time after waking up to prevent skin irritation.  When you put SENSUS back on and start therapy, the device will restart at your normal intensity. Read More

Posted by NeuroMetrix in SENSUS Operation

Why does it take up to 15 minutes to get relief?

Tuesday, September 23rd, 2014

SENSUS employs transcutaneous electrical nerve stimulation, which is thought to work through the central nervous system. The device stimulates the sensory nerves that travel from the lower legs and feet to the brain through pathways in the spinal cord, prompting the body to release natural peptides (i.e., small proteins) called enkephalins that decrease the perception of pain. Although your central nervous system is releasing these native pain relieving chemicals, the process takes time to register an effect.  Some people will experience relief in a shorter amount of time, but users should allow up to 15 minutes for relief after starting a therapy session with SENSUS.   Fortunately, the diminished perception of pain may linger for up to an hour after the conclusion of a therapy session.  If your device is set to restart automatically, your next session will commence one hour after the prior session finishes for optimal pain relief. Read More

Posted by NeuroMetrix in SENSUS Operation

How Is Therapy with SENSUS Different From Other TENS Devices?

Tuesday, July 29th, 2014

With conventional TENS, the user must start and stop therapy manually. When activated, these devices run at a constant intensity level throughout the therapy session unless the user manually intervenes. When stimulating for a prolonged period at the same intensity level, the stimulation may become less effective as a result of nerve desensitization. This is when the nerves ‘get used to’ the stimulation. Also, conventional TENS devices carry warnings against use while sleeping.

SENSUS optimizes the user’s experience and pain relief in a number of ways. SENSUS will automatically restart therapy every other hour, so the user can put the device on and get relief throughout the day or night without having to think about it. Within a given therapy session, SENSUS automatically increases the stimulation intensity over the course of the session to compensate for nerve desensitization. This helps ensure that the stimulation the user is receiving is optimized for therapy. Lastly, SENSUS is the only TENS device approved by the FDA for use during sleep. This allows people suffering from sleep disruption due to chronic pain a TENS options for overnight pain relief. Read More

Posted by NeuroMetrix in SENSUS Operation

How Is the Design of SENSUS Different From Other TENS Devices?

Monday, July 21st, 2014

A conventional TENS device typically includes a control unit, wires and individual electrode pads.  These devices rely on the user to determine, and manually set, the stimulation levels through the various control dials on the device.  The user must also place multiple electrodes in specific locations and then connect the electrodes to the control units with lead wires.  These wires and individual electrodes inhibit the user’s movement and usually require the user to remain stationary throughout the entire therapy session.

SENSUS has a unique, pre-configured electrode that easily snaps directly onto the back of the device.  The device and electrode are then secured to the upper calf by a Velcro strap.  A single button press activates therapy at the therapeutic intensity level that was automatically calculated for the user prior to the first use.

SENSUS is low profile so that it may be worn discreetly under clothing and it is lightweight so it is comfortable to wear throughout the day or during sleep.  The user may go about their daily activities like walking the dog, working in the garden or sleeping through the night, while benefitting from pain relief SENSUS provides. Read More

Posted by NeuroMetrix in SENSUS Operation

How Can a Single SENSUS Device Provide Widespread Pain Relief?

Wednesday, June 25th, 2014

A single SENSUS device will often provide pain control in both legs, and in fact throughout the body. Although SENSUS is typically placed on the leg, transcutaneous electrical nerve stimulation is thought to work through the central nervous system. The optimal placement for SENSUS is on the upper calf, one to two inches below the knee. This placement allows the device to stimulate the sensory nerves that travel from the lower legs and feet to the brain through pathways in the spinal cord. The stimulation prompts the body to release natural peptides (i.e., small proteins) called enkephalins that decrease the perception of pain. Because these pain relieving chemicals are released from the central nervous system, the pain relief will typically be widespread, not just in the immediate area where the device is placed. 

For more information about how SENSUS works, please see Transcutaneous Electrical Nerve Stimulation: Mechanisms of Action.   Read More

Posted by NeuroMetrix in SENSUS Operation

Extending the Life of Your Electrode

Saturday, April 5th, 2014

Each SENSUS electrode should last two weeks before you need to use a new one.  But if you’re finding that they’re wearing out more quickly, here are a few simple things you can do to make sure you get the full life out of your electrodes:

  1. Cover the electrode with the liner when not in use.  This will help protect the gel from drying out and picking up dust and dirt, which can eventually interfere with the delivery of therapeutic stimulation by the device.
  2. Hydrate your electrode.  The gel on the electrodes is a hydrogel, which means that it will absorb and retain water.  The gel will naturally start to dry when exposed to air and used on skin (in drier months, your skin will absorb moisture from the electrode).  If you notice that the gel is no longer tacky enough to stick to your skin, remove it from the device and run it under water for 10-20 seconds and let air dry.
  3. Hydrate your skin.  For some individuals, the gel of the electrode adheres particularly well to their skin (and may even begin to separate from the electrode).  If you find that this happens to you, applying a light moisturizer 30 minutes prior to using SENSUS may help prevent this from occurring; be sure to let the moisturizer absorb fully into the skin.
  4. Storage: When not in use, store at room temperature in a location away from direct sunlight.
Read More

Posted by NeuroMetrix in SENSUS Operation

Taking Care of your Skin

Tuesday, March 25th, 2014

Keeping up with good skin care practices is very important when using the SENSUS device.  Our skin needs to be hydrated and must be allowed to breathe to stay healthy; SENSUS users should pay close attention to the area under the SENSUS device, particularly if using overnight or for multiple therapy sessions during the day.

Take breaks to let your skin breathe:  Take the SENSUS device off when you’re not using it.  If wearing overnight, be sure to remove the device for at least 3-4 hours in the morning.  If you ever feel your skin becoming itchy under the device, remove it until the itching subsides.  If at any point you develop skin irritation from using SENSUS, always wait until your skin has fully healed until using it again in the same location.

Read More

Posted by NeuroMetrix in SENSUS Operation

SENSUS may help improve sleep quality for those suffering from nighttime chronic pain

Friday, January 17th, 2014

SENSUS is the only transcutaneous electrical nerve stimulator that is FDA cleared for use during sleep. With the addition of the newly introduced continuous therapy mode, SENSUS can now be set to automatically start a therapy session every other hour to help control pain while you sleep.   Read More

Posted by NeuroMetrix in SENSUS Operation

Why Does SENSUS Automatically Increase the Stimulation Intensity During a Therapy Session?

Tuesday, November 19th, 2013

Nerves desensitize in response to electrical stimulation.  This process is also called “habituation” or “accommodation.”  If the stimulation intensity is not increased to offset this desensitization then the pain relief effectiveness will decrease during the course of the one hour therapy session. Read More

Posted by NeuroMetrix in SENSUS Operation

Why do SENSUS Devices Need to be Configured?

Tuesday, November 19th, 2013

The purpose of the SENSUS configuration procedure is for the device to “learn” the user’s individual stimulation requirements.  Effective pain relief with transcutaneous electrical nerve stimulation requires a stimulation intensity that is well above the sensation threshold but below the level of discomfort or pain.  Through the configuration procedure, SENSUS determines this therapeutic intensity level. Read More

Posted by NeuroMetrix in SENSUS Operation