×

Devices, methods and systems for establishing supplemental blood flow in the circulatory system

  • US 9,132,216 B2
  • Filed: 05/16/2014
  • Issued: 09/15/2015
  • Est. Priority Date: 02/11/2010
  • Status: Active Grant
First Claim
Patent Images

1. A blood circulation assist system for increasing blood flow between a chamber in a heart of a patient and an artery of the patient, the blood circulation assist system comprising:

  • (i) a blood pump having an inlet and an outlet;

    (ii) an inflow cannula including;

    (a) a shaft comprising proximal and distal end portions and a lumen extending therebetween; and

    (b) a tip configured to extend through a tissue of the heart, the tip having a proximal end portion, a distal tip end, and a lumen extending therebetween, the proximal end portion of the tip being secured to the distal end portion of the shaft such that the lumen of the tip is in fluidic communication with the lumen of the shaft, the tip having a first distal tip opening at the distal tip end and a second opening extending proximally relative to the distal tip end and that is in fluid communication with the lumen of the tip, wherein the second opening of the tip is configured to permit blood to be continuously drawn into the lumen of the tip even in the event the distal tip opening becomes obstructed,(c) wherein the tip further includes an outer surface having a frusto-conical shape that has a proximal portion and converges distally,(d) the outer surface includes a shoulder configured to abut a first side of the tissue of the heart when the tip is positioned through the tissue of the heart, and(e) the shoulder is integrally formed at the proximal portion of the frusto-conical shape; and

    (iii) an outflow cannula having proximal and distal end portions and a lumen extending therebetween, the proximal end portion being configured to be coupled to the artery.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×