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How to use the Accu-Chek LinkAssist insertion device

Please wash your hands before use.

  1. Choose a site away from your waistline, bones, scar tissue, belly button and recent infusion sites. Prepare the site according to the instructions from your health care professional. Allow the infusion site to dry before the cannula is inserted.
  2. Push the grey tensioning element of the insertion device into the blue base. The insertion device is now pretensioned. This step locks the safety catch in place and automatically makes the insertion device secure.
  3. Hold the infusion set by its protective cover and, with the blue holder cap pointing upward, insert the infusion set into the opening of the insertion device below. You will feel it lock into place.
  4. Carefully remove the transparent protective cover from the infusion set by turning and pulling at the same time. Remove both pieces of the backing from the self-adhesive.
  5. Hold the base of the insertion device firmly in one hand and with the other hand pull the tensioning element out and up as far as it will go. Holding the tensioning element, position the insertion device on the prepared infusion site. Slide the safety catch out of the lock position.
  6. Press the release button.
  7. Smooth out the self-adhesive and run your fingers over it. This ensures good skin contact.
  8. Holding the self-adhesive in place, gently press the side clips of the blue holder cap and pull it from the cannula housing.
  9. To remove the introducer needle, hold the cannula housing firmly to your body. Using its handle, withdraw the introducer needle straight away from the skin.
  10. Connect the primed transfer set to the newly inserted head set. Make sure you hear a click when connecting.
  11. Fill the empty space of the cannula housing with a bolus of 1.0 units of insulin U-100. Start distribution with the pump.

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Frequently Asked Questions

Getting started

Yes. This enables you to reach hard-to-access infusion sites, such as your back.

In case the infusion set gets stuck in the insertion device, carefully push the tensioning element back into the base without pointing the insertion device toward your body or another person. Make sure not to compress the base during application.

The Accu-Chek LinkAssist device has been developed exclusively for automatic insertion of Accu-Chek Ultraflex infusion sets.

The Accu-Chek LinkAssist insertion device has been developed for anyone who might feel more comfortable with automatic insertion of infusion sets.

We have designed the Accu-Chek LinkAssist insertion device to accommodate anyone who might prefer automatic insertion. Some people have issues with dexterity or vision, and favor a larger insertion device that's easy to grip.

Health and comfort

While you may feel an occasional pinch when inserting the set, many people find inserting infusion sets more comfortable than injections. Once the set is under the skin, it can be so comfortable that people forget they're wearing it.

In order to help avoid infection, we recommend that sites be changed at least every 72 hours for soft cannula sets. It is important to always test your blood glucose level 1 to 3 hours after inserting a new set, to make sure that it's functioning properly.

Pain at the infusion site may be a sign that you are using a set which does not penetrate at the right depth for you—this can be especially true for children or slender users. If you're using a 90° insertion set, talk to your healthcare professional about the possibility of switching to a different needle or cannula length.

Water sports and sweating can affect the infusion set's adhesive pad. Try using an adhesive patch designed to stand up to moisture, such as Tegaderm™ or Opsite™ IV3000™, to make your site more secure.

You can also try the "sandwich" technique:

  • Cleanse the skin using an adhesive wipe and allow to dry
  • Apply a sterile dressing
  • Insert the set into the dressing
  • Cover the set with another sterile dressing to sandwich the infusion set

Roche is careful to use hypoallergenic materials. That's why our infusion sets are latex- and PVC-free, and glues and solvents are used as little as possible. Our adhesive tape is also specially designed to allow the skin underneath it to breathe. However, allergic reactions can never fully be ruled out. Sometimes they develop suddenly, even if you have used the same product for years. If an allergic reaction should occur, ask your physician about products that can help you continue therapy comfortably.

General questions

Many people find that they can continue to wear the pump for most of their day-to-day activities. However, Accu-Chek infusion sets are easy to disconnect any time you need to remove your pump for sports or swimming. 

Accu-Chek infusion sets offer a luer-lock connection that meets international standards and is widely used in medical engineering. Our sets fit on all Accu-Chek insulin pumps as well as on all other pumps that use the same standard.

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Accu-Chek LinkAssist insertion device

Item Description

The Accu-Chek LinkAssist insertion device provides easy, controlled, virtually painless automatic insertion of Accu-Chek Ultraflex infusion sets.1 One-finger activation assures consistent cannula placement every time.

Product Manuals


Accu-Chek Ultraflex




3.5" x 3.1" x 1.1"

Benefits and features
  • Fast, virtually painless insertion1
  • Convenient, one-finger activation
  • Consistent cannula placement every time
  • Easy insertion in hard-to-reach infusion sites
  • Unobstructed view of insertion site
  • Safety lock helps prevent unintentional activation
Additional specifications
Insertion angle:



3.5" x 3.1" x 1.1"; 2.5" high when pretensioned

1Liebl A, Klinge A, Buhr. Clinical benefits of automatic insertion of infusion sets in CSII. Presented at: 26th Workshop of the Study Group on Artificial Insulin Delivery, Pancreas and Islet Transplantation (AIDPIT) of the European Association for the Study of Diabetes (EASD) and 1st European Diabetes Technology and Transplantation Meeting; Feb. 4-6, 2007; Montpellier, France.