Expandable percutaneous cannula
AssigneesUniversity of Pittsburgh—Of the Commonwealth System of Higher Education, Ri.MED Foundation
InventorsVinay Badhwar, Antonio D'Amore, Daniel McKeel, William R. Wagner
Life of this patent
Estimating the term…
Abstract
Provided herein is a percutaneous expandable venous cannula device, and related methods. The device is easily inserted, for example, using standard Seldinger technique via the right internal jugular. The device includes multiple, multi-holed limbs that softly fill, e.g., the right atrium to facilitate complete drainage, enable retraction of the chamber in surgery, and mitigate suction occlusion, filling the entire atrium and allowing for efficient and rapid emptying of the chamber. In aspects, the device facilitates minimally-invasive aortic or mitral valve surgery with single placement via the right internal jugular as the sole cannula needed for full support.
Claims18
A percutaneous cannula device, comprising:
- a. a flexible, tubular elongated member having a proximal end, a distal end, a wall defining a lumen or passageway, and a longitudinal axis;
- b. an actuator extending within the passageway of the elongated member from the proximal end of the elongated member to beyond the distal end of the elongated member;
- c. a head unit attached to and extending from a distal end of the elongated member, comprising:
- i. three or more flexible tubes extending within the passageway of the elongated member, each flexible tube having a wall, a lumen, a proximal end, and a distal end;
- ii. a plurality of holes extending through the wall of one or more of the three or more flexible tubes;
- iii. a first spacer affixed to a distal end of the actuator and affixed to distal ends of the three or more flexible tubes, and spacing the flexible tubes in a pattern around the actuator;
- and
- iv. a second spacer proximal to the first spacer, affixed to the distal end of the elongated member, comprising a guide through which the actuator passes, and retaining the three or more flexible tubes in a pattern around the actuator;
- and
- d. a closed fluid path defined by at least the flexible tubes and extending to an outlet from the device to which suction can be applied to draw fluid through the holes of the flexible tubes, through the flexible tubes, and through the outlet.
A percutaneous cannula device, comprising:
- a. a flexible, tubular elongated member having a proximal end, a distal end, a wall defining a lumen or passageway, and a longitudinal axis;
- b. an actuator extending within the passageway of the elongated member from the proximal end of the elongated member to beyond the distal end of the elongated member;
- c. a head unit attached to and extending from a distal end of the elongated member, comprising:
- i. three or more flexible tubes extending within the passageway of the elongated member, each flexible tube having a wall, a lumen, a proximal end, and a distal end;
- ii. a plurality of holes extending through the wall of one or more of the three or more flexible tubes;
- iii. a first spacer affixed to a distal end of the actuator and affixed to distal ends of the three or more flexible tubes, and spacing the flexible tubes in a pattern around the actuator;
- and
- iv. a second spacer proximal to the first spacer, affixed to the distal end of the elongated member, comprising a guide through which the actuator passes, and retaining the three or more flexible tubes in a pattern around the actuator;
- and
- d. a closed fluid path defined by at least the flexible tubes and extending to an outlet from the device to which suction can be applied to draw fluid through the holes of the flexible tubes, through the flexible tubes, and through the outlet;
- e. wherein the actuator comprises a plurality of holes.
Dependencies are inferred from the claim text.