Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-08-25
1996-05-28
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604263, A61M 500
Patent
active
055206506
ABSTRACT:
A self-arrest overpenetration-proof cannula device for the safe insertion of a cannula or a needle with or without a catheter concentric to it into any body cavity or anatomical hollow structure having a wall, said body cavity or hollow structure being either naturally present or pathologically formed, being fluid, air or gas filled. The device has the intrinsic ability of automatically arresting the advancement of a needle or cannula instantly upon occurred body cavity penetration by the tip of said needle or cannula. The device is capable of recognizing penetration of a body cavity by means of a dropping of a vacuum pressure present in the device prior to body cavity penetration, said dropping of vacuum pressure occurring upon body cavity penetration of the needle tip, and is able to automatically respond to said drop of vacuum pressure by arresting the advancement of the needle or cannula.
REFERENCES:
patent: 2047010 (1936-07-01), Dickinson
patent: 3530785 (1970-09-01), Peters et al.
patent: 4269192 (1981-05-01), Matsuo
Zadini Filiberto
Zadini Giorgio
Cermak Adam J.
Yasko John D.
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