TRANSSEPTAL CANNULA, TIP, DELIVERY SYSTEM, AND METHOD

摘要

A cannula assembly, further comprising a cannula body for directing blood from the heart of a patient, having distal and proximal ends and a lumen therebetween. A tip coupled to the distal end of the body, the tip having an opening. A pump for drawing blood into the cannula assembly and dispensing the blood from the cannula assembly and into the patient circulatory system. The lumen of the cannula body further comprises a first inner diameter at the proximal end and a second inner diameter at the distal end, the first inner diameter being larger than the second inner diameter. A tapered portion defined as a decrease in inner diameter from the first inner diameter to the second inner diameter between the proximal and distal ends, the tapered portion configured to prevent cavitation of the blood within the cannula.

主权项

1. A system for assisting the flow of blood through a patient circulatory system, comprising:
an outflow cannula configured to provide fluid communication between the outlet and the cardiovascular system of a patient; and an adaptor device configured to fluidicly communicate the inlet and the cannula body, the adaptor device including a proximal end, a distal end, and a lumen therebetween; wherein the distal end of the adaptor device is configured to couple with the proximal end of the cannula body and the proximal end of the adaptor device is configured to couple with the inlet of the pump; wherein the adaptor device is configured such that blood flowing into the distal end of the adaptor device flows in a generally lateral direction relative to the patient and blood flowing out of the proximal end of the adaptor device and into the inlet flows in a generally medial direction relative to the patient.