1 results about "Syringe Caps" patented technology

The utility model discloses a kind of pre-filled syringe protective caps, belong to medical instrument technical field, including the protective cap body, needle tip cavity, conical cavity, sliding cavity and connecting cavity are sequentially arranged in its inside along the axial direction. The sliding cavity side wall is provided with exhaust hole, the inside sliding is provided with silica gel block extending to connecting cavity, and connecting cavity diameter is greater than sliding cavity diameter. When syringe is inserted, realize phased exhaust function: initial stage is discharged compressed air by exhaust hole, final stage silica gel block slidingly closes exhaust hole, to avoid external pollution. While optimizing needle support stability, the utility model solves the problem of falling caused by poor exhaust of traditional protective cap, while taking into account aseptic seal and operation reliability, suitable for high health requirements injection scene such as vaccine, biological preparation.