| 主权项 |
1. A bottle for dispensing a sterile liquid, comprising:
a reservoir portion having an interior chamber and a mouth opening to the interior chamber; a filter disk affixed to the mouth opening of the reservoir portion of the bottle to seal the mouth opening of the reservoir portion of the bottle, the filter disk having two planar sides, and a plurality of vent holes therethrough, and a filter disk dip tube hole formed through said filter disk, said filter disk dip tube hole being disposed off-center in said filter disk displaced to one side of a center of said filter disk, and said plurality of vent holes being disposed in said filter disk displaced to an opposing side of the center of the filter disk; a dispensing head that attaches to the mouth opening of the reservoir portion over said filter disk, the dispensing head having a liquid outlet port for dispensing the sterile liquid from the bottle, an air inlet port for allowing ambient air to enter the mouth opening of the reservoir portion through said plurality of vent holes of said filter disk to equalize pressure in the bottle reservoir after liquid is dispensed from the bottle, and a dip tube configured to be inserted through and received through said filter disk dip tube hole formed through said filter disk, and received in the interior chamber of the reservoir portion, the dip tube including a liquid inlet port connected in fluid communication with the liquid outlet port, said filter disk dip tube hole formed through said filter disk sealing around the dip tube, and said filter disk dip tube hole being configured to form a tight interference fit with the dip tube to seal around the dip tube; and first and second porous membrane filters affixed to both sides of said filter disk by adhesive, said first and second porous membrane filters covering said plurality of vent holes of said filter disk on both of said two planar sides of said filter disk, each of said first and second porous membrane filters including membrane filter dip tube holes formed through said first and second porous membrane filters and aligned with each other and said filter disk dip tube hole, respectively, said membrane filter dip tube holes being configured to form a tight interference fit with the dip tube to seal around the dip tube, one of said first and second porous membrane filters being affixed between the mouth opening of the reservoir portion of the bottle and said filter disk and fixedly sealing the mouth opening of the reservoir portion of the bottle, said first and second porous membrane filters being configured to filter ambient air entering the bottle to prevent contaminants from entering the reservoir portion of the bottle along with the ambient air. |
