Surgery – Instruments – Means for inserting or removing conduit within body
Patent
1997-07-24
1999-05-25
Buiz, Michael
Surgery
Instruments
Means for inserting or removing conduit within body
606191, 606194, 606195, A61F 1100
Patent
active
059066199
ABSTRACT:
Improved systems, devices, and methods for deployment of endoluminal prostheses within the lumens of the body withdraw a sheath from over the tightly compressed prostheses using an actuation mechanism having a variable mechanical advantage. This allows movement of the sheath to be initiated with ease and accuracy. Once deployment is safely underway, and after static frictional forces have been overcome, the remainder of the deployment may proceed more rapidly without significantly degrading overall safety or ease of use of the delivery system. In another improvement, the handle for the actuation mechanism may rotate about an axis parallel to the axis of the sheath. An outer tube may be provided around the sheath and coupled to the prosthesis restraining member within the sheath. The outer tube may be inserted through an introducer valve, so that friction between the outer tube and introducer valve helps restrain the prosthesis as the sheath is withdrawn proximally relative to both the member and the outer tube.
REFERENCES:
patent: 5433723 (1995-07-01), Lindenberg et al.
patent: 5683451 (1997-11-01), Lenker et al.
patent: 5749921 (1998-05-01), Lenker et al.
patent: 5755773 (1998-05-01), Evans et al.
Davis Glenn R.
Olson Steve L.
Bui Vy Quang
Buiz Michael
Medtronic Inc.
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