Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-10-20
1998-07-21
Hafer, Robert A.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604165, A61M 5178
Patent
active
057828075
ABSTRACT:
A releasably locking dilator/sheath medical introducer device is provided having a dilator with a non-circular cross-sectional shape to enable insertion of a catheter, guide wire and the like into a patient. More particularly, the invention provides an introducer device that has dilator with a non-circular cross-sectional shape, particularly a substantially oval cross-sectional shape, and that comprises a releasable lock for the dilator and the circumscribing sheath components of the device. In preferred embodiments, the introducer device also includes a visual indicator and/or a tactile indicator to conveniently inform a user of the device whether the dilator/sheath assembly is in a locked or unlocked position. In another aspect, a releasably locking introducer device is provided that has a dilator that can rotate within a circumscribing sheath component wherein the dilator includes a proximal end component that can rotate around the longitudinal axis of the device relative to and independently of the dilator and sheath components to releasably lock the dilator within the circumscribing sheath.
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Bimbo Frank
Falvai John
Riddle Richard S.
Carlson Jeffrey D.
Conlin David G.
Corless Peter F.
Hafer Robert A.
TFX Medical Incorporated
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