Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1997-11-07
2000-03-28
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604264, 604532, A61M 2500
Patent
active
060425768
ABSTRACT:
A two-staged venous cannula is disclosed having an angled bend near the distal end. In a preferred embodiment, the angle is a right angle. The angle bend allows the cannulation to take place near the junction of the inferior vena cava and the right atrium instead of higher in the right atrium. The cannula has a drainage hole at the apex of the angled bend to act as a blood collection port and a drainage hole at the distal end of the cannula to drain the inferior vena cava. The two-stage venous cannula is made of a rigid material at its distal end so that the distal end of the cannula may be easily inserted into the patient's heart through the right atrium. The disclosed cannula keeps the cannula away from the aorta, allows the cannula to exit the superior vena cava at an angle more perpendicular to the axis of the superior vena cave and allows the cannula to be used in minimally invasive surgical procedures where size and access restrictions often make it difficult to place and maintain such devices.
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Proceedings of the Society for Experimental Biology and Medicine vol. 75 (Oct.-Dec., 1950 (inclusive).
Jaro Michael J.
Medtronic Inc.
Patton Harold R.
Yasko John D.
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