| 摘要 |
<p>An applicator (10) includes a barrel (12) for containing a semisolid medicinal, the barrel including a large diameter cylindrical section (16), a small diameter cylindrical section (18) and an annular sloped transition section (20) that connects the large diameter cylindrical section and the small diameter cylindrical section, the sections being coaxial with each other, the small diameter cylindrical section including an inner surface defining an internal cavity for containing the medicinal, a first end (30) with a first opening (32) and equiangularly spaced, axially aligned evacuation channels (28) in the inner surface for venting air out of the barrel when the internal cavity is filled with the medicinal, and the large diameter cylindrical section includes a second opposite end with a second opening (24); a rubber plunger (58) for pushing the medicinal through the first opening, the plunger being slidably positioned in sealing contact with the inner surface of the small diameter cylindrical section; a plunger rod (86) connected with the plunger and contained within the barrel; a removable cap (40) for sealingly closing off the first opening and for applying a pushing force to the plunger rod when the cap is removed from the sealing relationship with the barrel in order to slidably move the plunger in the small diameter cylindrical section of the barrel to expel the medicinal from the first opening; and a connection assembly (36) for removably connecting the cap to the barrel such that the cap sealingly closes off the first opening. The applicator is useful for introducing medicinals into body cavities.</p> |
