Split-hole puncture needle cannula
The invention discloses a split-hole puncture needle cannula, wherein an elliptic side hole (1) is formed in a far side of the tubular puncture needle cannula from the top in a proper distance; an arc needle core (4) can turn by the side hole smoothly; and a longitudinal opening (2) is formed on opp...
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| Format: | Patent |
| Sprache: | chi ; eng |
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