Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1988-03-14
1990-04-03
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 70, A61M 530
Patent
active
049136992
ABSTRACT:
A needleless injector device includes an integral unit that is dimensioned and arranged to be grasped in the hand of a user, loaded with a selected dosage, and held proximate the skin in order to inject the selected dosage in a high pressure jet sufficient to pass the selected dosage through the skin for injection purposes, the unit having a barrel portion, a gas storage portion, and an intermediate portion. A trigger operates a release mechanism to release compressed gas from a storage compartment to act upon a piston and drive a plunger that ejects the selected dosage of medication through an aperture in the discharge end of the barrel portion, the piston face being larger than the plunger face to increase pressure. A dose dispenser combines with the injection device in a system adapted for use with an insulin or other conventional vial and the dose dispenser may include a vial adapter or the combination of a vial coupler and a transporter/loader device designed to pierce the self-sealing lid on the vial and to facilitate more precise dosage transfers.
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Hanson Loyal M.
Peterson Gordon L.
Yasko John D.
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