Introduction: How to Load a Cartridge Into a Deltec Cosmo Pump

Picture of How to Load a Cartridge Into a Deltec Cosmo Pump
This instructable demonstrates something I had to learn by trial and error for my son who has Type 1 diabetes and uses a Deltec Cosmo pump.

Note: This instructable requires prior knowledge of needed amount of insulin in the cartridge.

Caution: The top of the insulin vial must be cleaned with an alcohol swab before beginning. Care must also be taken while handling the needle.


Step 1: Gathering Materials

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Gather materials: the pump with cap, the cartridge, the infusion set, and the tubing 

Step 2: Filling the Cartridge

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       Attach the needle to the cartridge by twisting into place clockwise and remove lid Do not throw lid away.

Step 3:

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Pull air into the cartridge to the desired setting, creating as precise a measurement as possible. The air will compensate for the insulin to be removed from the vial and prevent the creation of a vacuum. A vacuum may cause the vial to break, causing injury.

Step 4:

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   Insert the needle into the spongy center of the top of the vial as shown

Step 5:

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    Push the air into the vial

Step 6:

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 Pull the insulin from the vial into the cartridge as shown, farther down than the setting in step 1

Step 7:

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    Thump the vial with your finger to bring the air bubbles to the top of the cartridge

Step 8:

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   Push the plunger up to remove air bubbles, thumping again if necessary

Step 9:

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   Return plunger to setting in step 1

Step 10:

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  Remove needle from vial

Step 11:

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     Replace the lid to the needle

Step 12:

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  Twist off the needle with its lid

Step 13:

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  Put the white cap on, twisting it clockwise a half turn until firm

Step 14:

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  Turn the plunger a quarter turn until it loosens and can be removed

Step 15: Loading the Cartridge

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 Insert the cartridge into the pump, twisting it clockwise a half turn until firm

Step 16:

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  Place the pump cap over the white cap. Do not attempt to twist on.

Step 17:

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 Press the right oval button

Step 18:

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 Press the down arrow button until Load is highlighted

Step 19:

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  Press the right oval button again 3 more times until the pump begins to draw the cartridge down

Step 20:

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  Line up the teeth of the pump cap and twist a quarter turn until firm

Step 21:

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Twist off the white cap

Step 22: Attaching Tubing and Infusion Set

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Attach infusion set to tubing at a perpendicular angle as shown and twist into place

Step 23:

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Attach tubing to pump(twisting clockwise until firm, a quarter to half turn)

Step 24: Filling Infusion Set

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 Fill tubing should already be highlighted. (If the pump has returned to the alert screen, press the right button.) Hold the infusion set to the light until you see the small needle inside.

Step 25:

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1.       Select Fill tubing by pressing the right oval button. Keep your finger on the right arrow button ready to press it again quickly when the insulin comes out of the needle (Important: See the next 3 steps before beginning)

Step 26:

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1.       Select start by pressing the right oval button

Step 27:

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2.      Watch the needle inside the infusion set as the pump pushes insulin through the infusion set and tubing.

Step 28:

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3.     Press the right oval button when you see insulin come out of the needle

Step 29:

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 Press the left oval button twice to return to the main menu screen


amandaghassaei (author)2012-10-22

nicely documented! how often does it need to be refilled?

I refill it every two days, but some do it every three. Thanks for the comment!

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