Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1985-04-05
1987-01-27
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 4, A61M 2500
Patent
active
046392521
ABSTRACT:
A venous return catheter is provided having a first diameter distal portion suitable for insertion in a vena cava, a second, larger diameter proximal portion, and a transition portion forming a smooth transition between the first and second diameter portions. Drainage openings are provided in both the proximal and distal catheter portions. The catheter is of unitary construction, having a smooth bore through its entire length. It is also constructed from a soft, resilient material, but is reinforced with a harder, stiffer material in the region of the proximal drainage openings. The catheter may also be provided with wire reinforcement. The catheter is manufactured by a dip-molding process utilizing a male mandrel as a form.
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Page from catalog of U.S.C.I. illustrating that compan's 1969 type venous return cannula intended for use when single venous drainage from the right atrium and inferior vena cava is desired.
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Foster John B.
Foster Robert D.
Kelly Michael N.
Pellegrino Stephen C.
Research Medical Inc.
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