What do you do with the Novorapid feathers that are struck?

Well, it turns out that I have two novorapid feathers that I had to discard because the dosing does not turn.
I get little insulin and they last a lot, I think it is because of the rubber where the needle is inserted, it becomes harder (deterioration) over time and it becomes stagnant preventing the output of the medication (pure physical).
Do you get the medication with other needles?
Is there any trick?

But, in a month you already spoil?
Do not use them for more than a month, which, once started, do not last any longer
If you get stuck, they are no longer reliable.A new one begins ..

I do that sorry for so much medication

I understand you @ruthbia what I do is get it with syringes ... When you discover the stockings you will freak down ... to be able to put 2 and a half units ... even if your pulse and view are good you can play even with the rooms...

@Marcos_J_M I have syringes but I have a hard time loading them because I use small amounts and the stripes are very close.

@Ruthbia you have to catch the 30 units not those of 50 ...
With those of 30 I divide each unit in 10 JAHA

In principle I have not found myself and I use it since it came out.But if I would be thrown out and fool new

It has never happened.If m passes the shot and lame another.

In my case it has normally been the needle that has caused the problem, so the change and problem solved.

It has happened to me like @roar, when it has stuck is for the needle.I would personally discard it and use a new

If you reuse the needles and leave them, they are clogged and with changing the needle is worth.
Yes, this is not, you have to be very careful with the syringe, do not put an overdose.