| 摘要 |
A syringe for injecting medicament having automatic needle extension and retraction the syringe includes a first body with a cylindrical cross-section, which includes a front end and a rear end. The front end is provided with a means of transport smaller in diameter than the first body, which is fastened to same with a first fastening protrusion. The means of transport include a male frustoconical element which in turn includes conduits to transport said medicament, the front end further including a sealing protrusion and, located above said first fastening protrusion and said first sealing protrusion, a first alignment protrusion, inside said first body there is also a first elastic element which is fastened to said rear end of said first body with a posterior spring clip, and to said means of transport with an anterior spring clip, the rear end of said first body includes a handle. |
| 主权项 |
1. A syringe for injecting a medicament (M) having automatic needle extension and retraction, the syringe comprises:
a first body (A) with a cylindrical cross-section, which comprises an front end (A1) and a rear end (A2); said front end (A1) is provided with a means of transport (9) smaller in diameter than the first body (A), which is fastened to same with a first fastening protrusion (2), said means of transport (9) including a male frustoconical element (1) which in turn includes conduits to transport said medicament (M), said front end (A1) further including a sealing protrusion (3) and, located above said first fastening protrusion (2) and said first sealing protrusion (3), a first alignment protrusion (4), inside said first body (A) there is also a first elastic element (5) which is fastened to said rear end (A2) of said first body (A) with a posterior spring clip (6), and to said means of transport (9) with an anterior spring clip (7), the rear end (A2) of said first body (A) includes a handle (10); a second body (B) which has an front end (B1) and a rear end (B2), this latter being open to allow said first body (A) to be inserted and provided with a stop element (18) located inside the second body (B), said second body (B) moreover having at some point of its external surface second fastening protrusion (11), including on said front end (B1) also a second alignment protrusion (12), from the front end (B1) of said second body (B) a frustoconical cavity projects (14) which acts as a detent for the needle (15), from which a cylindrical space is provided concentrically (16) including grooves (19); and a third body (C) which further includes an front end (C1) and a rear end (C2), open to permit the insertion of said second body (B), a flexible stop element being included in its interior (26) which acts as an impediment to said second fastening protrusion (11) of said second body (B), there being located above said flexible stop element (26) a release button (22) consisting of an anterior part (22a) at a right angle penetrating into said third body (C), and a posterior part (22b) linked to a second elastic element (24), said front end (C1) includes a third elastic element (23) which is fastened to said third body (C) via fasteners (27) in the center of which there is an aperture (29) whose diameter is approximately the same at that of the needle (15). |
