초록 ▼

A dropper tip which is adapted to be connected to a container for dispensing fluid, such as medications and like, from the container includes a body having first and second opposite ends and an inner wall defining a conduit therethrough. The inner wall smoothly diverges and gradually increases in in

A dropper tip which is adapted to be connected to a container for dispensing fluid, such as medications and like, from the container includes a body having first and second opposite ends and an inner wall defining a conduit therethrough. The inner wall smoothly diverges and gradually increases in inner diameter from the first end to the second end such that air bubbles are prevented from being permanently trapped along the inner wall. The inner wall is highly polished and may be made of olefinic material, silicone rubber material, or fluorocarbon, including, but not limited to, polytetrafluoroethylene (PTFE), carbon tetrafluoroethylene (CTFE), fluoroethylene propylene (FEP) or the like, to resist fluid wetting, facilitate fluid detachment therefrom and to reduce fluid film thickness therealong. The surface of the inner wall is smoothed to minimize surface roughness. A tubular portion having a flat end surface is provided at the first end of the body to promote limited momentary attachment of fluid thereto when fluid is being dispensed from the dropper tip. A sharp perimeter edge is provided by the flat end surface to provide an instant transition to discourage fluid wetting and migration beyond the designated perimeter of the flat end surface. A novel cap is provided for sealing the dropper tip from contaminants.

대표청구항 ▼

[ The invention claimed is:] [34.] A dropper tip which is adapted to be connected to a container for dispensing fluid from the container, said dropper tip comprising: a body having first and second opposite ends and an inner wall defining a conduit therethrough, said inner wall is formed of a materi

[ The invention claimed is:] [34.] A dropper tip which is adapted to be connected to a container for dispensing fluid from the container, said dropper tip comprising: a body having first and second opposite ends and an inner wall defining a conduit therethrough, said inner wall is formed of a material which resists fluid wetting, and said inner wall smoothly transitioning from said first end to said second end such that air bubbles are prevented from being permanently trapped along said inner wall, said inner wall being formed from a first wall portion having a predetermined inner dimension and first and second opposite ends, a second wall portion having first and second opposite ends, and a third wall portion having a predetermined inner dimension and first and second opposite ends, said second end of said first wall portion smoothly transitioning with said first end of said second wall portion, said second end of said second wall portion smoothly transitioning with said first end of said third wall portion, said inner dimension of said first wall portion being smaller than said inner dimension of said third wall portion, said second wall portion being radiused to smoothly transition said conduit from said first wall portion to said third wall portion, said inner wall smoothly transitioning from said first end to said second end such that air bubbles are prevented from being permanently trapped within said dropper tip, and said first wall portion gradually diverging from said first end to said second end and said third wall portion gradually diverging from said first end to said second end, the dimension of said first wall portion at said second end being smaller than the dimension of said third wall portion at its first end, and a fourth wall portion having opposite first and second ends, said second end of said fourth wall portion smoothly transitioning with said first end of said first wall portion, said fourth wall portion being radiused to smoothly transition said conduit from said first end of said body to said first end of said first wall portion.