Revolutionary Pen Idea

This morning I had an idea. Last night I was dissassembling a huge bagful of insulin pumps (my cousin is a diabetic and he uses them, cleans them, and gives them to me to take the guts out of them) and in them I keep the springs, casing, and insulin resevoirs... (I ALWAYS throw those horrid needles away; I don't want to get stuck with one) I had an idea looking at the resevoirs... I wanted an ink pen that could write/draw in ANY color ink with the turn of a dial, adjustment of a slide, etc.. anyway, I have about fifty of these resevoir things (they have little pistons in them) and I was curious if there was a way to reach my goal. Should I use red, blue, yellow ink, or should I use magenta, cyan, and yallow? Do I have to make the inks myself, or could I drain them from printer cartriges? Should I use only primary colors, or secondary colors as well?

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lemonie8 years ago
Medtronic or Roche? These aren't the actual pumps, they're just the insulin refills? So you'd need some kind of drive for 'em? L
MattGyver92 (author)  lemonie8 years ago
Here's the pumps I get the syringes from: I seperated the usable parts into four piles: Batteries (still full power), springs, syringes, and cases. Those parts were taken from about 7 individual pumps-and I've still got a whole bag left!
Hey, you could string all the batteries together for a high voltage DC supply! Rather than take these apart, I'd try to use the whole units (refilled with ink), you just need the control mechanism to activate the drive. L
MattGyver92 (author)  lemonie8 years ago
The pistons in the pumps are threaded...I was planning on using a spring, but would all the ink leak out if I did?
You need motors? L
MattGyver92 (author)  lemonie8 years ago
If the springs work properly, I doubt I'd need any motors in it.... As the ink is used, the spring will push the piston downward (upward, whatever) until it hits the bottom and there is no more ink. Then I simply remove the piston, add more ink, put the piston back in and continue writing/drawing/etc. So, I don't think I really need motors in it....unless I used the threaded shaft and motor rotation to move the piston instead using a simple spring. (I wouldn't know how to easily do that anyway....... so I think I'll try to use springs to move my ink)
Ah well, good luck with it. L
MattGyver92 (author)  MattGyver928 years ago
They're basically a cylinder open on one end with a plastic/rubber piston and threaded shaft come out , and on the other end, you have a capillary tube. Fluids only move on the "Push" stroke of the piston... I was thinking that adding ink and attaching it to a ball point pen and giving it a spring to create pressure and help it write (or leak)...
MattGyver92 (author) 8 years ago
Here's a pic of a large ink pen (empty) with three sryinges attatched to it (also empty) to see if they fit...
MattGyver92 (author) 8 years ago
Okay everyone, here's a few pics of the syringes: They're not too big, and they've got a capillery tube coming from the bottom of them.
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