Sliding bush type needle head protection device and safety syringe
A technology for a safety syringe and a protection device, applied in the field of needle protection devices, can solve the problems of complicated structure of the syringe, accidental stab wounds and high cost, and achieve the effects of simple structure, accidental stab wound prevention and low cost.
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[0085] Preferred embodiments of the needle protection device of the present invention and a safety needle assembly using the needle protection device will be described in detail below with reference to the accompanying drawings.
[0086] figure 1 A safety needle assembly of an embodiment of the invention is shown in a pre-use state. The safety needle assembly includes a needle base 8 , a needle 6 mounted on the needle base 8 , a collar 1 fixed on the needle base 8 and a sliding sleeve 2 slidably sleeved on the collar 1 . Wherein, the needle base 8 and the needle 6 constitute the needle head, and the collar 1 and the sliding sleeve 2 constitute the needle protection device of the present invention. figure 1 The safety needle assembly shown also includes a syringe 4 , a push rod 5 and a rubber stopper 3 fixed on the upper end of the push rod 5 . The syringe 4, the push rod 5 and the rubber stopper 3 may be components of syringes known in the art, and will not be repeated in th...
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