Applicator for semisolid medications
First Claim
1. An applicator for introducing a semisolid medicinal into a body cavity, comprising:
- a) barrel means for containing the medicinal, said barrel means including;
i) an inner surface defining an internal cavity for containing the medicinal,ii) a first end with a first opening in communication with said internal cavity,iii) a second opposite end with a second opening in communication with said internal cavity, andiv) evacuation channel means for venting air out of said barrel means when said internal cavity is filled with said medicinal, said evacuation channel means being formed on said inner surface;
b) plunger means for pushing said medicinal through said first opening, said plunger means being slidably positioned in said barrel means in sealing contact with the inner surface thereof;
c) removable cap means for sealingly closing off said first opening and for applying a pushing force to said plunger means when said cap means is removed from said sealing relationship with said barrel means in order to slidably move said plunger means in said barrel means to expel said medicinal from said first opening, said cap means including an open end; and
d) connection means for removably connecting said cap means to said barrel means such that said cap means sealingly closes off said first opening.
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Accused Products
Abstract
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.
179 Citations
28 Claims
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1. An applicator for introducing a semisolid medicinal into a body cavity, comprising:
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a) barrel means for containing the medicinal, said barrel means including; i) an inner surface defining an internal cavity for containing the medicinal, ii) a first end with a first opening in communication with said internal cavity, iii) a second opposite end with a second opening in communication with said internal cavity, and iv) evacuation channel means for venting air out of said barrel means when said internal cavity is filled with said medicinal, said evacuation channel means being formed on said inner surface; b) plunger means for pushing said medicinal through said first opening, said plunger means being slidably positioned in said barrel means in sealing contact with the inner surface thereof; c) removable cap means for sealingly closing off said first opening and for applying a pushing force to said plunger means when said cap means is removed from said sealing relationship with said barrel means in order to slidably move said plunger means in said barrel means to expel said medicinal from said first opening, said cap means including an open end; and d) connection means for removably connecting said cap means to said barrel means such that said cap means sealingly closes off said first opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An applicator for introducing a semisold medicinal into a body cavity comprising:
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a) barrel means for containing the medicinal, said barrel means including; i) an inner surface defining an internal cavity for containing the medicinal, i) a first end with a first opening in communication with said internal cavity, and iii) a second opposite end with a second opening in communication with said internal cavity, b) plunger means for pushing said medicinal through said first opening, said plunger means being slidably positioned in said barrel means in sealing contact with the inner surface thereof, said plunger means including; i) a cylindrical section, ii) annular sealing flange means for sealing said plunger means against the inner surface of said barrel means, and iii) securing means for securing said annular sealing flange means in surrounding and spaced relation to said cylindrical section; c) removable cap means for sealingly closing off said first opening, for applying an axial pushing force to said plunger means when said cap means is removed from said sealing relationship with said barrel means in order to slidably move said plunger means in said barrel means to expel said medicinal from said first opening, and for applying an outwardly radial pressing force on said annular sealing flange means to press said annular sealing flange means into sealing contact with the inner surface of said barrel means, said cap means fitting between said cylindrical section and said annular sealing flange means to apply said radial pressing force on said annular sealing flange means; and d) connection means for removably connecting said cap means to said barrel means such that said cap means sealingly closes off said first opening. - View Dependent Claims (21, 22, 23)
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24. An applicator for introducing a semisolid medicinal into a body cavity comprising:
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a) barrel means for containing the medicinal, said barrel means including; i) an inner surface defining an internal cavity for containing the medicinal, ii) a first end with a first opening in communication with said internal cavity, and iii) a second opposite end with a second opening in communication with said internal cavity, b) plunger means for pushing said medicinal through said first opening, said plunger means being slidably positioned in said barrel means in sealing contact with the inner surface thereof, said plunger means including; i) a cylindrical section, ii) annular sealing flange means for sealing said plunger means against the inner surface of said barrel means, and iii) rib means for securing said annular sealing flange means in surrounding and spaced relation to said cylindrical section and for substantially preventing inward radial deformation of said annular sealing flange means when said medicinal is expelled from said barrel means; c) removable cap means for sealingly closing off said first opening and for applying an axial pushing force to said plunger means when said cap means is removed from said sealing relationship with said barrel means in order to slidably move said plunger means in said barrel means to expel said medicinal from said first opening; and d) connection means for removably connecting said cap means to said barrel means such that said cap means sealingly closes off said first opening. - View Dependent Claims (25, 26, 27, 28)
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Specification