Aortic cannula with spoon-shaped lip
OwnerRonald K. Grootersinventor
Life of this patent
Estimating the term…
Abstract
An improved aortic cannula is provided for use in heart by-pass surgery. The cannula includes an elongated tube with a terminal end. The terminal end has a ramped surface leading to the discharge opening. The ramped surface terminates in a spoon-shaped lip. The spoon-shaped lip directs blood out of the cannula opening toward the ascending aorta or aortic arch in a U-shaped dispersion so as to preclude impact on the aortic wall. A bead adjacent the opening facilitates dispersion of the exiting blood. The opening has an upper edge with an inverted V-shaped contour which also facilitates dispersion of the blood.
Claims12
An aortic cannula comprising:
- an elongated tube having a longitudinal axis and a terminal end with an opening therein;
- and
- a spoon-shaped lip extending from the terminal end adjacent the opening so as to discharge blood from the cannula in a hollowed stream;
- said spoon-shaped lip having a side-to-side curvature as well as a front-to-back curvature.
An aortic cannula comprising:
- an elongated tube having a longitudinal axis and a terminal end with an opening therein;
- a spoon-shaped lip extending from the terminal end adjacent the opening so as to discharge blood from the cannula in a hollowed stream;
- a raised bead in the tube adjacent the terminal end to facilitate dispersion of blood from the opening;
- and
- the opening having an upper end with an inverted V-shaped contour.
An aortic cannula comprising:
- an elongated tube having a longitudinal axis and a terminal end with an opening therein;
- and
- a spoon-shaped lip extending from the terminal end adjacent the opening so as to discharge blood from the cannula in a hollowed stream;
- and further providing that the lip is concave.
An aortic cannula comprising:
- an elongated tube having a longitudinal axis and a terminal end with an opening therein, said opening having an upper end with an inverted V-shaped contour;
- and
- a spoon-shaped lip extending from the terminal end adjacent the opening so as to discharge blood from the cannula in a hollowed stream.
An aortic cannula comprising:
- an elongated tube having a longitudinal axis and a terminal end with an opening therein, said tube having a raised bead adjacent the terminal end to facilitate dispersion of blood from the opening;
- and
- a spoon-shaped lip extending from the terminal end adjacent the opening so as to discharge blood from the cannula in a hollowed stream.
Dependencies are inferred from the claim text.