IV Catheter 22G are for intravenous administration of fluids. If you are giving subcutaneous fluids, regular hypodermic needles will also work.
Smiths Medical’s OPTIVA® I.V. Catheter provides superior insertion and ease of use by featuring an electropolished “V”-Point needle, finely tapered catheter shoulders, thin-walled construction, radiopacity and incorporates OCRILON® polyurethane catheter tubing.
OCRILON® polyurethane is firm upon insertion of the cannula, then softens to conform in the vein. OCRILON® is a clear, radiopaque polyurethane, allowing for easy flashback visualization. A comparative, randomized clinical study of the risk factors for infusion-related phlebitis found OCRILON® polyurethane catheter material to reduce the risk of phlebitis by nearly 60% as compared with FEP polymer (relative risk = 0.41; p = 0.007).*
*Stebor A.D. Liao J. M.D.Ph.D, Department of Epidemiology and Biostatistics, University of South Florida. A Peripheral Catheter Indwell Study Comparing Phlebitis Rates Between Two Different Catheter Materials.