Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1990-01-26
1991-11-19
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604264, 604280, 128772, A61M 5178
Patent
active
050662856
ABSTRACT:
A catheter introducer comprises a tubular sheath for inserting and guiding a catheter into living tissue. In accordance with this invention, the sheath is typically made of expanded polytetrafluoroethylene, with a result that the catheter introducer sheath is highly flexible and non-kinking, but it also exhibits relatively high hoop strength so that burrs, notching, and kinking can be avoided as the catheter introducer is advanced through tissue while surrounding a dilator unit, to achieve advantages not found in prior art analogs.
REFERENCES:
patent: 3953566 (1976-04-01), Gore
patent: 4000739 (1977-01-01), Stevens
patent: 4082893 (1978-04-01), Okita
patent: 4149535 (1979-04-01), Volder
patent: 4187390 (1980-02-01), Gore
patent: 4488877 (1984-12-01), Klein et al.
patent: 4781693 (1988-11-01), Martinez et al.
patent: 4850975 (1989-07-01), Furukawa
Article entitled, Physical Properties and Test Methods for Expanded Polytetrafluoroethylene (PTFE) Grafts, by Michael E. McClurken, Ph.D., James M. McHaney and William M. Colone, pp. 82-94.
Cordis Corporation
Pellegrino Stephen C.
Rafa Michael
LandOfFree
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