| 摘要 |
The present invention provides a detectable heavy duty needle cannula ( 12 ) for use in hypodermic syringes and the like. Needle cannula ( 12 ) comprises a magnetizable or magnetized stainless steel alloy, which enables needle cannula ( 12 ) to be detectable in metal detectors that are commonly used in the meat processing industry to detect broken needle cannulas in the flesh of slaughtered animals. Needle cannula ( 12 ) further comprises a sidewall ( 17 ) that is thicker than the sidewalls of prior art needle cannulas. The thicker sidewall imparts to needle cannula ( 12 ) greater resistance to breakage during the process of injecting animal health products into an animal and greater detectability in a metal detector.
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