• Fist Assist FA-1 is now available in Europe for arm vein dilation and helping your renal care journey! FistAssistSales.com

Fist Assist is now available in Europe for arm vein enhancement and strengthening! Search Amazon for “Fist Assist” to purchase.
UK customers: order here!


  • How does it work?

    Wear the device on your arm 2-3 hours daily to assist vein enlargement for renal disease.
  • What is it?

    A non-invasive, external device which uses a pneumatic balloon for intermittent vein compression.
  • Who we help

    • Chronic kidney disease (CKD)
      1 in 10 Adults
    • 40 Million Americans
      Classified as having CKD


Welcome to Fist Assist

Fist Assist device is automated, for ease of use

The Fist Assist device is an external medical intermittent pneumatic compression device that can apply intermittent pressure to a specific arm vein that may help dilate the vein for eventual AV fistula placement.

  • Having large arm veins before hemodialysis or fistula surgery
  • Enlarging your arm veins before any surgery or procedures is important

Wearable Vein Enhancement Device

Dilate your arms veins in as little as 2-3 hours per day with Fist Assist.


About Fist Assist

Fist Assist was designed, developed, and tested in Silicon Valley California by Dr. Tej Singh. Dr. Singh is an active Vascular/Endovascular/Vascular Access Surgeon in Palo Alto, California, with 30 years of research on AV fistulas & Vein compression.

Fist Assist

Leading Edge Care for Hemodialysis

  • Durable and best hemodialyis with large arm veins
  • Vein dilation and enlargment before and after arm fistula surgery ensures best results
  • Arm vein dilation can occur with hand exercises, lifting weights, squuezing a rubber ball
  • Larger veins before surgery ensures best results with dialysis
  • Vein preservation and dilation is important
Patients show vein enlargement improvement 92%
Rate the comfort and ease of use of the device 98%
Benefited from the use of the Fist Assist Device 100%



  • How does the device work?

    We are an external compression device for the arm. We compress the cephalic vein under the skin.

  • What is the science?

    With compression of the vein, the vein will enlarge due to research we have done with basic, exercise and clinical science.

  • How many batteries does it take?

    Two “AA” batteries. We highly recommend alkaline batteries.

  • Can I get it wet?

    No. Getting it wet can damage the circuit board.

  • Who created the device?

    This novel device was created by Stanford University trained Vascular Surgeon Dr. Tej Singh.


  • Where on my arm do I apply it?

    Best to apply below the shoulder, above the elbow, making sure black box lines up with your thumb.

  • Do I put it on tight?

    Not super tight, just an easy application is all that is needed.

  • Can I run with the device on?

    At the present time, we recommend you sit or lie with the device on to avoid major movement with activity.

  • How many hours a day do I wear it?

    At least 2 hours per day recommended. Can be worn 1 hour in morning and 1 hour in afternoon.

  • Just slightly increase the tightness, but not super tight please.

    This novel device was created by Stanford University trained Vascular Surgeon Dr. Tej Singh.


  • What if the device double beeps?

    Means the device is sensing a pressure or must be reset. Replace batteries or do hard reset by holding the button for 5 seconds.

  • How do I turn it on?

    Hold the start button for 2 seconds then release.

  • How do I turn it off?

    Press and release the center button by our logo.

  • How do I change batteries?

    Battery compartment is on back. Make sure batteries are fresh alkaline batteries in the proper orientation.

  • How can I do a hard reset the device?

    Resetting the device can be done by taking out the batteries for 5 seconds.

  • When do I change the batteries?

    When device color light goes to yellow.

  • If it gets damaged or is not working, how do I return it?

    Please return device to place of purchase for refund or replacement.

  • How do I contact Fist Assist Devices, LLC

    We can be reached through our website www.fistassistdevices.com or via email fistassistdevices@gmail.com

Fist Assist is now available on Amazon UK for Arm vein enhancement and strengthening!
Order Now!