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US 2019/0336676 A1Published application
Convertible multi-stage / bi-caval femoral venous cannula
AssigneeEdwards Lifesciences Corporation
InventorWilliam T. Biller
Life of this patent
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AssigneeEdwards Lifesciences Corporation
InventorWilliam T. Biller
Estimating the term…
A venous drainage cannula, catheter, or other device is in certain embodiments convertible or adjustable for application in cardiac surgery procedures involving cardiopulmonary bypass. Such a convertible cannula device can be modified, for example, for use as both a multi-stage cannula and a bi-caval cannula, so that the same device can be used in multiple different procedures where one or the other cannula type is needed. Such convertible cannula or other device can simplify and reduce a number of parts needed for a bypass procedure, by providing one adjustable and versatile device to serve multiple functions where different cannulae are traditionally required. Various embodiments further provide cannula devices where a variety of different hole or opening arrangements and configurations can be achieved, to adapt to various different procedures.
A device for use in cardiopulmonary bypass, the device comprising a cannula configured to be positioned in at least one of a right atrium, a superior vena cava, or an inferior vena cava of a patient, the cannula having a first end, a second end, and a longitudinal axis extending between the first end and the second end, the cannula comprising:
A method for adjusting and positioning a femoral venous cannula in a patient for cardiopulmonary bypass during a cardiac procedure, the cannula having a first end, a second end, and a longitudinal axis extending between the first end and the second end, the cannula comprising a first section at the first end and comprising an outer wall and having at least one opening therethrough, a second section connected to the first section along the longitudinal axis and comprising an outer wall and having at least one opening therethrough, and a third section connected to the second section along the longitudinal axis on a side of the second section opposite the first section and comprising an outer wall and having at least one opening therethrough, wherein in a first configuration, the openings in each of the first section, the second section, and the third section are respectively open to inner spaces defined by the first section, the second section, and the third section, and wherein in a second configuration, the at least one opening in the second section is occluded to restrict communication with the inner space defined by the second section, while the openings in the first section and the third section remain open to the inner spaces defined by the first section and the third section, respectively, the method comprising:
Dependencies are inferred from the claim text.