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US 4,284,590 AGranted
Multiple aspirator for nebulizer
AssigneeRespiratory Care, Inc.
InventorsRoy DeBoer, Jr., Kenneth G. Miller
Life of this patent
Estimating the term…
Abstract
A multiple aspirator has a disk with an axial hole and a plurality of radial bores, providing liquid feeding channels, which end at the axial hole. A round rod is disposed coaxially in the axial hole. Gas flow parallel to the axis, through the hole past said disk, is forced by the rod into an annular pattern, thereby aspirating fluid from the radial bores and nebulizing it in said annular pattern.
Claims8
A multiple aspirator comprising:
- a disk shaped member having an axis, two faces spaced along said axis with each face perpendicular thereto, an outer peripheral edge concentric with said axis and an axial aperture, concentric with said axis, connecting one face with the other;
- a plurality of bores in said disk-shaped member, said bores being radial to said axis and angularly disposed about said axis, said bores connecting said outer peripheral edge with said axial aperture;
- means to force a stream of gas from one side of said disk shaped member to the other through said axial aperture;
- a rod shaped member, concentric on said axis, located to restrict the axial aperture so that gas flow from one side of said disk shaped member to the other can take place only in the annular clearance between said rod and said axial aperture;
- means to supply fluid to the outer peripheral edge of said disk shaped member;
- whereby the flow of gas in said annular clearance causes fluid to be drawn through each of said bores to said annular space, whereat it is nebulized and transported;
- whereby each of said bores constitutes part of a separate aspirator, individual to its bore, and whereby each of said separate aspirators operates independently of the other separate aspirators.
4 more elements
A multiple aspirator comprising:
- a can-shaped member having a cylindrical wall and a closed bottom, and having a longitudinal axis of symmetry;
- means to inject gas under pressure into the can shaped member through its cylindrical wall;
- means to channel the injected gas as it leaves the can, said means to channel comprising a disk shaped member and a throttling rod;
- said disk shaped member being symmetric about said longitudinal axis of symmetry and having a central aperture, with the edges of said disk shaped member in gas tight engagement with said cylindrical wall;
- whereby the injected gas is channeled to leave the can shaped member by way of said central aperture;
- said throttling rod being located to be symmetric about said axis of symmetry and concentric within said central aperture;
- whereby the injected gas is further channeled to leave the can shaped member by way of an annular space between said central aperture and said throttling rod;
- fluid tight channel means associated with the periphery of said disk-shaped means;
- means to supply said channel means with fluid;
- a plurality of bores in said disk shaped member connecting said channel means with the central aperture, said bores being radial of said axis of symmetry and being angularly spaced about said axis of symmetry;
- whereby gas flowing in said annular space will aspirate fluid from said bores and nebulize and transport said fluid in said annular space.
8 more elements
Dependencies are inferred from the claim text.