Inhalation therapy apparatus adapter

Details Inhalation therapy apparatus adapter Inhalation therapy apparatus adapter

1986-03-07

1987-02-24

Recla, Henry J.

Surgery

Truss

Pad

7386152, A61B 508

Patent

active

046449582

ABSTRACT:
A throw-away plastic mouthpiece of low cost and producing a pressure differential upon inhalation is substituted for the rotary turbine and electronics mouthpiece of a known Spirocare respiratory therapy apparatus. The pressure differential is converted to a voltage by a pressure-to-voltage transducer, which voltage is highly amplified by a drift free amplifier. The amplifield voltage is applied to an adapter electronic circuit which produces a succession of negative going pairs of pulses exactly simulating the pulses from the Spirocare mouthpiece. The amplifier and adapter circuitry fit within the cavity provided in the Spirocare apparatus for storage of the mouthpiece, thereby adapting the Spirocare apparatus for use with an inexpensive, throw-away mouthpiece which need not be sterilized, and which is cheap to replace in the event of breakage.

REFERENCES:
patent: 3555555 (1971-01-01), Lambert
patent: 3605729 (1971-09-01), Liu et al.
patent: 3680378 (1972-08-01), Aurilio et al.
patent: 3922525 (1975-11-01), Kozak et al.
patent: 4425805 (1984-01-01), Ogura et al.
patent: 4444201 (1985-04-01), Itoh

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