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Dosage inhalator with indicating/interrupting means

  • US 5,549,101 A
  • Filed: 11/14/1994
  • Issued: 08/27/1996
  • Est. Priority Date: 05/05/1992
  • Status: Expired due to Term
First Claim
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1. A dosage inhalator for dispensing to a patient a pharmacologically active compound suspended in a fluid comprising:

  • a housing,a nozzle extending from the housing and defining an outlet positioned for inhalation of the pharmacologically active compound by the patient and an inlet within said housing,storage means within said housing, for storing multiple doses of said active compound to be dispensed,a conduit in fluid communication between a conduit outlet at said inlet of said nozzle and conduit inlet at a region within said housing adjacent said storage chamber,carrying means having portions for carrying predetermined and reproducible unit doses of said active compound from said storage means to said conduit inlet, said carrying means being mounted for intermittent movement between said conduit inlet and said storage means to deliver one of said portions to said conduit whereby said unit dose of said active compound located at said portion can be dispensed through the conduit,maneuvering means for actuating said intermittent movement of said carrying means, said maneuvering means being positioned to be movable between first and second predetermined positions by a user of the inhalator, andmeans for disrupting the movement of said maneuvering means upon exhaustion of said active compound in said storage means, said means for disrupting being operably positioned with respect to said maneuvering means,wherein said carrying means is actuated by a ratchet mechanism including a spring-biased pawl, said maneuvering means includes a lever that is reciprocally displaceable between two distinct positions, and the movement of said ratchet mechanism is limited by said displacement of said lever.

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