Best needles for tough veins

I’ve been struggling with some patients who have really tough veins to puncture. I’ve tried using different gauge needles, but I feel like I’m missing something. Are there any specific brands or types that you all swear by for these tricky cases? Any tips would be appreciated.

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I’ve found that using smaller gauge needles, like 22 or 23, can sometimes help a lot with tough veins since they can make the entry less painful and encourage better blood flow… Have you tried warming the arm a bit before sticking, like with a warm towel? It can really make a difference.

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