Patent ID: 9125978
Filing Date: 2015-09-08
Classification: A61B,A61M

Abstract:
1. A method of implanting a cannula having a longitudinal axis into a chamber of a heart of a patient having a circulatory system, the chamber of the heart having a wall and an aperture through the wall, the method comprising: moving the cannula in a first direction through the aperture such that a lumen of the cannula communicates with the chamber for drawing blood from the chamber into the lumen; receiving a rigid flared tip portion of the cannula within the chamber of the heart, the rigid flared tip portion extending from a flat portion on an end of the cannula residing in the chamber and flaring radially outward relative to the longitudinal axis and in a direction away from the end; establishing an implant position of the cannula within the chamber of the heart and along the longitudinal axis by contacting the wall of the chamber of the heart with a ring member fixedly connected with the cannula and extending around the longitudinal axis, the ring member spaced at a fixed distance from the rigid flared tip portion such that the wall is positioned in a gap defined between the ring member and the rigid flared tip portion, the cannula including a fabric positioned in the gap, wherein receiving the rigid flared tip portion within the chamber of the heart includes receiving the fabric within the aperture in the wall of the chamber, the fabric being configured to facilitate tissue ingrowth from the aperture to the fabric positioned in the gap; coupling the gap to the wall of the chamber of the heart, including suturing the fabric to the wall of the chamber; and guiding blood through the lumen between the chamber of the heart and a separate location in the circulatory system of the patient while the cannula remains fixed in the implant position.