Non-buckling thin-walled sheath for the percutaneous insertion o

Details Non-buckling thin-walled sheath for the percutaneous insertion o Non-buckling thin-walled sheath for the percutaneous insertion o

1990-05-01

1993-01-19

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604169, 128658, 138130, 138133, A61M 2500

Patent

active

051803763

ABSTRACT:
An introducer sheath includes an extremely thin, flat wire metal coil that is surrounded only on its exterior surface with a plastic tube or coating. The flat wire coil optimizes the resistance of the sheath to buckling while minimizing the wall thickness of the sheath. The plastic covering being only on the outside of the metal coil optimizes the thinness of the introducer sheath wall while still providing a smooth outer surface for easy percutaneous insertion into an artery or other vessel of a living body. The higher density of the metal coil as compared to the plastic tubes of existing introducer sheaths, maximizes the radiopacity of the sheath for this thin-walled design. An alternative embodiment consists of two flat wire metal coils, one wound over the other, with a plastic covering the outer surface of the outer metal coil.

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