Needle gauge | Number of bevels | Needle shield material | Type of silicone lubricant | Single-center study | Multi-center study |
---|---|---|---|---|---|
27a | 3 | Rubber | A | × | ×× |
27 | 5 | TPE | B | × | |
27 | 5 | Rubber | A | × | |
27 | 5 | TPE | A | × | × |
27 | 3 | Rubber | A | × | |
29 | 3 | TPE | A | × | |
29 | 5 | Rubber | A | × | |
29b | 5 | TPE | A | × | × |
27 disposable needle | - | - | A | × | |
29 disposable needle | - | - | A | × |