Implantable co-pulsatile epi-ventricular circulatory support system with sutureless flow cannula assembly
Assignee3R Life Sciences Corporation
InventorsSteven Shi Lap Tsui, Pong-Jeu Lu
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Abstract
An implantable circulatory support system, configured to connect a ventricular chamber of a heart, including a valveless displacement blood pump, a deformable polymeric flow cannula, a pair of male and female fasteners, a coupler, a driveline assembly, and a co-pulsatile driver. Forward and backward flow communication between the blood pump and the heart chamber is accomplished using the present flow cannula invention which is anastomosed to the heart chamber in a sutureless manner. When providing circulatory support, the co-pulsatile driver ejects blood out of the blood pump during systolic ventricular contraction and fills the blood pump with blood during diastolic ventricular relaxation.
Claims6
An implantable circulatory support system, configured to connect a ventricular chamber of a heart, comprising:
- a blood pump, including a blood sac, a blood pump housing, a stem suspension integrating the blood sac within the blood pump housing, a sensor embedded in the blood pump housing to represent a heart rhythm, and an inlet adapter with a beak flange;
- a flow cannula assembly, comprising:
- a deformable flow cannula, including a conduit body, a bellmouth and a flange ramp, wherein the conduit body is between the bellmouth and the flange ramp, the bellmouth is at a first end of the flow cannula and is configured to be inserted into the ventricular chamber, the flange ramp is at a second end of the flow cannula and is configured to be interfaced to the blood pump, and an inner surface of the flow cannula is smooth and seamless;
- a male fastener and a female fastener, being screw interconnected, wherein the male fastener is anchored on the flow cannula, and the female fastener is compressed against an epicardium of the ventricular chamber;
- and
- a coupler, connecting the second end of the flow cannula with the inlet adapter of the blood pump, and comprises a flange base and a pair of collars pinned on the flange base, wherein the collars have an internal grooved slot to receive and compress together the flange base, the flange ramp of the flow cannula, and the beak flange of the inlet adapter;
- a driveline assembly;
- and
- a co-pulsatile driver,
- wherein the driveline assembly pneumatically communicates the blood pump with as well as transmits a heart rhythm signal to the driver;
- wherein the co-pulsatile driver commands a pneumatic pumping support according to a sensed heart rhythm waveform, wherein a co-pulsatile pumping is fulfilled by a pump ejection during systolic ventricular contraction and a pump fill during diastolic ventricular relaxation.
Dependencies are inferred from the claim text.