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Equipment and process for supplying doses of at least one gas to the respiratory tracts of a user

  • US 5,560,353 A
  • Filed: 11/29/1994
  • Issued: 10/01/1996
  • Est. Priority Date: 07/23/1992
  • Status: Expired due to Fees
First Claim
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1. A system for supplying to a respiratory tract of a user a plurality of discrete puffs of at least one gas, each of the puffs containing particles of at least one active product;

  • the system comprising;

    a nebulizer containing the particles of the active product, the nebulizer being in a gas circuit between a source of the gas and the user;

    gas flow control means for delivering in each of the puffs a metered amount of the gas to the nebulizer and to the user;

    sensing means for sensing a breath phase of the user, for initiating each of the puffs in response to the breath phase of the user, and for counting the puffs;

    sequence-control programmable means, operatively coupled to the sensing means, for controlling operations of the gas flow control means and delivering a plurality of the puffs in a predetermined sequence of the puffs to the user, the predetermined sequence being delivered according to a puff sequence program, the puff sequence program including a maximum number of puffs;

    a transportable memory storage unit for transporting the puff sequence program;

    read/write record means for the sequence-control programmable means to accept the puff sequence program from the memory storage unit and for recording timing parameters of the sequence of the puffs on the memory storage unit; and

    a programing station for entering the puff sequence program onto the memory storage unit.

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