Introducer sheath with irregular outer surface

Details Introducer sheath with irregular outer surface Introducer sheath with irregular outer surface

1994-05-17

1995-06-13

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

A61M 2500

Patent

active

054237742

ABSTRACT:
An introducer sheath for insertion into a patient's vascular system is provided having an irregular, undulating outer surface to interface with the irregular surface formed by the invasive procedure of inserting the sheath into a blood vessel. The sheath includes a helical coil member formed of continuous turns of spiral wound flat wire and a plastic sleeve surrounding the coil. Each turn of the coil is spaced apart from a next adjacent turn sufficiently to define therebetween an interstice wide enough to allow the plastic sleeve to be constricted into the interstices between the turns. A corresponding undulating outer surface is thereby formed to interface with a wall of blood vessel to minimize blood leakage therefrom. In the preferred embodiment, a lubricated inner plastic tube is proved, and a distal portion of the sheath surface has a smooth configuration.

REFERENCES:
patent: 3428046 (1969-02-01), Remer et al.
patent: 4368730 (1983-01-01), Sharrock
patent: 4955862 (1990-09-01), Sepetka
patent: 5069674 (1991-12-01), Fearnot et al.
patent: 5180376 (1993-01-01), Fischell
patent: 5188152 (1993-02-01), Ogawa
patent: 5217482 (1993-06-01), Keith

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