Medication sprayer

Details Medication sprayer Medication sprayer

1993-12-06

1995-07-18

Asher, Kimberly L.

Surgery

Liquid medicament atomizer or sprayer

12820022, 604 54, A61M 1100, A61M 3100

Patent

active

054331919

ABSTRACT:
A medication sprayer (2) is used to spray a liquid medication (110) directly from a vial (4) having a needle pierceable septum (6). The sprayer includes a body (10) reciprocally housing the vial. A spike assembly (60) includes an air inlet spike (66), connected to the ambient environment (108), and a liquid exit spike (68), both piercing the septum. The liquid exit spike is fluidly coupled to a piston/cylinder arrangement (88, 26, 36) having a combination piston/flapper valve (88) at one end of the cylinder (26) and a supplemental check valve (36) at the other end. The vial, spike assembly and piston/flapper valve move in unison to pump liquid through the piston/flapper valve into the cylinder, to pull air into the vial and to pump liquid in the cylinder through the supplemental check valve, past a spray nozzle (44) and into the ambient environment.

REFERENCES:
patent: 460458 (1891-09-01), Bates
patent: 904149 (1908-11-01), Rachmann
patent: 3635218 (1972-01-01), Ericson
patent: 3874380 (1975-04-01), Baum
patent: 3874381 (1975-04-01), Baum
patent: 4344573 (1982-08-01), De Felice
patent: 4405308 (1983-09-01), Jessup
patent: 4493348 (1985-01-01), Lemmons
patent: 4743243 (1988-05-01), Vaillancourt
patent: 4776848 (1988-10-01), Solazzo
patent: 4923448 (1990-05-01), Ennis, III
patent: 5331954 (1994-07-01), Rex et al.

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