Surgery – Respiratory method or device – Ozone or ion generation
Patent
1980-05-29
1982-05-04
Yasko, John D.
Surgery
Respiratory method or device
Ozone or ion generation
A61M 500
Patent
active
043277241
ABSTRACT:
A pneumatically operable injection device has a first pressure cylinder with a piston which is adapted to be rigidly but detachably connected to a piston of an injection syringe, and a second pressure cylinder with a piston having an extension adapted to co-operate with a three-way cock in such a manner as to cause the three-way cock to be operated by movement of its piston. Flow connections are provided between the outlet of the injection syringe and the three-way cock, between the three-way cock and a connecting piece, and between the three-way cock and an inlet of a reservoir for the substance to be injected. The device is adapted to effect either a connection between the outlet of the injection syringe and the connecting piece or between the syringe outlet and the reservoir. Compressed-air lines are provided for the purpose of pneumatically operating the pistons in the two pressure cylinders. Bleed valves disposed in the compressed-air lines are adapted to be controlled electronically in such a manner that the pneumatically effected filling step can only be initiated with the three-way cock being in the position in which it connects the syringe outlet with the reservoir and that a subsequent injection step can only be effected with the three-way cock in a position in which it connects the syringe outlet with the connecting piece.
REFERENCES:
patent: 3768472 (1973-10-01), Hodosh et al.
patent: 4108176 (1978-08-01), Walden
patent: 4212298 (1980-07-01), Gezari
Birk Michael
Pfeiffer Ullrich
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