FlowerFairy
Explorer
AmexBabushka on Telegram offers a replacement cart holder that's 3-d printed. Make sure to mention that you're after the Nova, since he also produces them for convipens.
What Would Your Ultimate Dream Pen Look Like With No Budget Limits?
- Thread starter ThunderBird
- Start date
FlowerFairy
Explorer
I'm not going to get into the imaginary pens I'd want (one that clears itself, locks in the dose and stays there unless you adjust it by hand, has enough weight to sit nicely in my grip, and comes in the shades I like best). As for pens that actually exist? A Luxura in green, plus a Saavio in pink and another in green. A black one could be nice as well. Still, spending hundreds of dollars on just 1 pen feels like too much for someone as frugal as me.
skeptick
Explorer
You've really set my mind racing about ways to make these pens run better. Obviously, whatever we use has to be safe with the compounds the pens deliver. WD40 is mainly a penetrant, and at 1st it isn't a great lubricant, but it improves over time as the solvent leaves; that evaporation keeps going until the WD turns into a thick, waxy material that protects well but doesn't work well as a grease. I figure a little gun lubricant CLP (cleans, lubricates, protects) would be a longer-lasting answer. Trouble is, the spiral shafts on the pens I've looked at are made of some unidentified plastic that might be damaged by the solvents in any lube. In the CLPs I know, the main lubricant is Teflon, and like WD, those are cleared for food processing equipment. WD sprayed on would reach every internal part of a pen, while CLP could be dabbed on lightly with a foam Q-Tip and would remain where you put it. I have 2 V2s, which I don't like, and I'll test this on them. Based on how that turns out, I have a V1, my current go-to pen, that I may give the same treatment. I also have a new Savio that I've only run with water, checking accuracy and smoothness after a couple dozen runs to break it in, and I like it a lot; it might be another test candidate. Stand by for updates in this thread...
I spent my whole career as a research and development mechanic for a big aircraft manufacturer. I worked alongside many very skilled mechanics and some extremely brilliant engineers. If they could imagine it and put it on paper, we built it. After all kinds of extended torture testing, we tested things until they failed. For instance, we fastened a test aircraft to the floor and raised the wing tips until the wings snapped. 16 feet and the boom of a shot gun blast, then we took everything apart and sent the fuselage off to the bone yard.
AlexSilver
Explorer
skeptick said:
Do you know where someone could get one?AlexSilver said:
skeptick said:
What if the plunger shaft, along with the part that follows it, were built from polished stainless steel—or a similar material—so that the pen glides with exceptional smoothness and stays consistent across its entire working range?Grogu said:
For my part, one improvement would be knowing more precisely how much peptide remains in the cartridge. A few of my pens have markings on the cartridge holder, yet those markings are meaningless to me. Sure, I could consult the instructions, but finding the time is another matter...On top of that, certain pens arrived without any paperwork.
Priming is another annoyance. I believed I had removed every bit of air from a cartridge I'm using now, but when I checked yesterday, air was still present. Whether any engineering solution exists for that, I can't say.
Since I won't keep the pen needle attached between doses, I'd rather have pens that are more compact. I get that cartridge length and the length of the "plunger" set the size, but any way to make these pens slimmer and shorter would be welcome.
There's one more frustration: at the moment I use the Savvio. The build quality is great, its smaller size is great, but the cartridge loading mechanism is not. Screw-in cartridge holders are what I prefer, whereas the Savvio relies on a spring mechanism that rotates the same direction as when you take off a needle. As a result, while removing a needle, I've had the cart holder pop out several times by accident. A spring loaded cart holder sounds appealing, but perhaps the threading should have gone the opposite way?
Ergonomics deserve thought too. A design that made one-handed use easier, particularly for those with arthritis, could be worth designing around. I don't have that (yet), but I can imagine it becoming a problem.
Last, even though I like pens and have tested dosing many times, I still find myself unsure whether the dose actually went in. I don't know if there's a way to engineer something for that.
Steel gears and a steel plunger are indeed present in the first Gansulin autoinjector.
They would rather not have their name shared on a public forum. Send me a DM instead.
AlexSilver
Explorer
In my opinion, the main issue with lower-cost pens is that the gears skip when the plunger is pushed too quickly, and occasionally even at a slower pace. My guess is that adding lube would only make things worse…. I’m not sure, though.
skeptick
Explorer
When I first tried my initial V2, that tooth-skipping sensation hit me too—though honestly, I was handling it like a gorilla. I have no clue how much actually went in. Since then, I've run accuracy checks on every one of my four pens with water: 2) V2s, 1) V1, and 1 Savio. For my purposes, each was accurate enough, worked as it should, and ran smoothly. In my opinion, the V1 and the Savio were nicer to use than the V2s. I put about a half dozen vials through each one to break them in. I haven't used the Savio with Tirz yet. I just received some Cag that I plan to load into it.
arborealtrout
Explorer
Honestly, the worst part of the V2 for me is those silly spring-loaded caps — they block my view of what I'm doing.
I'd really like to give one of those high-pressure injectors that don't use a needle a shot.
You just press it to your skin, hit the button, and BAM, it's all done in a second or 2.
With the ones you can buy now, loading them is still a pain, so my perfect pen would be like that, except you'd simply click a vial into place, set the amount, and fire it off.
You just press it to your skin, hit the button, and BAM, it's all done in a second or 2.
With the ones you can buy now, loading them is still a pain, so my perfect pen would be like that, except you'd simply click a vial into place, set the amount, and fire it off.
Dilbert4Life
Explorer
My experience is limited to the Nova insulin Flexpen, the Mounjaro kwickpen, and the Lily Luxura reusable pen, so my wish list might not be all that useful. Still, here is what I would want:
_ a pen that can be refilled
_ with the same smooth operation as the ones mentioned above
_ a display of how many ml or units are left in the cartridge
_ an insulated cooling sleeve included for travel in hot conditions
At a fair price, I don't believe that is asking for too much.
_ a pen that can be refilled
_ with the same smooth operation as the ones mentioned above
_ a display of how many ml or units are left in the cartridge
_ an insulated cooling sleeve included for travel in hot conditions
At a fair price, I don't believe that is asking for too much.