Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-05-19
1990-08-28
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604238, A61M 500
Patent
active
049522060
ABSTRACT:
A single use syringe wherein the essential concept is to create a valve within the orifice that leads from the drug chamber into the chamber leading to the needle. The valve consists of a conical washer supported within the chamber by inclined barbs formed on its outer perimeter. The barbs will only allow the washer to move in one direction; toward an orifice at the needle end of the chamber. Initially the washer is positioned so that it does not impede fluid flow in either direction. Engaging the washer but not attached to it is an expansion plug. The expansion plug can absorb fluid and expand to force the washer against the opening leading to the needle, to thereby occlude fluid flow. The process is slow, taking at least several minutes, thereby permitting the syringe to be used once for its intended purpose before occlusion occurs.
REFERENCES:
patent: 2798487 (1957-07-01), Ferguson
patent: 2893390 (1959-07-01), Lockhart
patent: 3373743 (1968-03-01), Safir
patent: 3941128 (1976-03-01), Baldwin
patent: 3982538 (1976-09-01), Sharpe
patent: 4233975 (1980-11-01), Yerman
patent: 4449693 (1984-05-01), Gereg
patent: 4479801 (1984-10-01), Cohen
patent: 4559983 (1985-12-01), Paoletti
patent: 4731068 (1988-03-01), Hesse
patent: 4781683 (1988-11-01), Wozniak et al.
Gray Frederick J.
Ibanez Paul
Anco Engineers, Inc.
Cermak Adam J.
Rozsa Thomas I.
Yasko John D.
LandOfFree
Occlusion apparatus for converting a syringe into a non-reversib does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Occlusion apparatus for converting a syringe into a non-reversib, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Occlusion apparatus for converting a syringe into a non-reversib will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1587367