| 摘要 |
PCT No. PCT/GB95/01017 Sec. 371 Date Nov. 29, 1996 Sec. 102(e) Date Nov. 29, 1996 PCT Filed May 4, 1995 PCT Pub. No. WO95/30446 PCT Pub. Date Nov. 16, 1995A syringe for the injection or taking of fluids having a needle mounting endpiece which is detachably coupled to barrel by mating features. A plunger and a coupled seal are guided by flanges sliding within guides and are further guided by protrusions so as to prevent rotation of the plunger and prevent unwanted contact between the flanges and the barrel. The plunger exhibits a bayonet-type fixture which upon rotation engages within the endpiece and allows retraction of the endpiece and coupled needle within barrel. Following engagement and retraction, the plunger may be prevented from movement by the engagement of protrusion on the barrel protrusions and abutment of radial protrusions against annular protrusions. Further embodiments and improvements are provided. |
