Blood pump with flow cannula

Patent metadata

Field	Value
Publication number	US-12364799-B2
Application number	US-202418420914-A
Country	US
Kind code	B2
Filing date	Jan 24, 2024
Priority date	Sep 1, 2016
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A blood pump for supporting a patient's heart includes a flow cannula having a distal portion including a distal end and a proximal portion including a proximal end opposite the distal end, the distal end of the flow cannula configured to be connected to the patient's heart or a blood vessel to establish fluid communication between the blood pump and the patient's heart and blood vessel, respectively. The flow cannula further includes an intermediate portion attached to the distal portion and the proximal portion, wherein the intermediate portion allows twisting thereof with a lower force than the distal portion and the proximal portion. The intermediate portion can be fully occluded by twisting it. At least a portion of the intermediate portion either alone or in combination with the distal portion is adapted to be permanently attached to the patient's heart or a blood vessel.

First claim

The invention claimed is:

1. A blood pump for supporting a heart of a patient, the blood pump comprising:
a pump casing including at least a first inlet and a first outlet;
an impeller disposed in the pump casing, the impeller configured to draw blood into the pump casing;
an outflow cannula having a proximal end and a distal end, the proximal end of the outflow cannula coupled to the pump casing at the first outlet, the distal end of the outflow cannula configured to be attached to an aorta of the patient; and
an inflow cannula coupled to the pump casing at the first inlet, the inflow cannula comprising:
a distal end of the inflow cannula;
a proximal end of the inflow cannula opposite the distal end of the inflow cannula along a longitudinal axis of the inflow cannula, the distal end of the inflow cannula configured to be connected to the heart of the patient or a blood vessel of the patient in order to establish a fluid communication between the blood pump and the heart of the patient or between the blood pump and the blood vessel of the patient, respectively;
a distal portion of the inflow cannula including the distal end of the inflow cannula;
a proximal portion of the inflow cannula including the proximal end of the inflow cannula,
wherein the proximal portion of the inflow cannula and distal portion of the inflow cannula are formed as a single piece; and

an intermediate portion placed over the single piece of the distal portion of the inflow cannula and the proximal portion of the inflow cannula, wherein the intermediate portion allows twisting thereof with a lower force than at least one of the distal portion of the inflow cannula and the proximal portion of the inflow cannula,
wherein the intermediate portion is configured to be fully occluded by twisting thereof,
wherein at least a portion of the intermediate portion is configured to be permanently attached to the heart of the patient or the blood vessel of the patient, and
wherein the intermediate portion comprises an attachment member at a distal end of the intermediate portion, wherein the attachment member is configured to be attached to the heart of the patient permanently and is sutured to the heart of the patient.

2. A blood pump for supporting a heart of a patient, the blood pump comprising:
a pump casing including at least a first inlet and a first outlet;
an impeller disposed in the pump casing, the impeller configured to draw blood into the pump casing;
an outflow cannula having a proximal end and a distal end, the proximal end of the outflow cannula coupled to the pump casing at the first outlet, the distal end of the outflow cannula configured to be attached to an aorta of the patient; and
an inflow cannula coupled to the pump casing at the first inlet, the inflow cannula comprising:
a distal end of the inflow cannula;
a proximal end of the inflow cannula opposite the distal end of the inflow cannula along a longitudinal axis of the inflow cannula, the distal end of the inflow cannula configured to be connected to the heart of the patient or a blood vessel of the patient in order to establish a fluid communication between the blood pump and the heart of the patient or between the blood pump and the blood vessel of the patient, respectively;
a distal portion of the inflow cannula including the distal end of the inflow cannula;
a proximal portion of the inflow cannula including the proximal end of the inflow cannula,
wherein the proximal portion of the inflow cannula and distal portion of the inflow cannula are formed as a single piece; and

an intermediate portion placed over the single piece of the distal portion of the inflow cannula and the proximal portion of the inflow cannula, wherein the intermediate portion allows twisting thereof with a lower force than at least one of the distal portion of the inflow cannula and the proximal portion of the inflow cannula,
wherein the intermediate portion is configured to be fully occluded by twisting thereof,
wherein at least a portion of the intermediate portion is configured to be permanently attached to the heart of the patient or the blood vessel of the patient, and
wherein the intermediate portion comprises an attachment member at a distal end of the intermediate portion, wherein the attachment member is made of a felt material.

3. A blood pump for supporting a heart of a patient, the blood pump comprising:
a pump casing including at least a first inlet and a first outlet;
an impeller disposed in the pump casing, the impeller configured to draw blood into the pump casing;
an outflow cannula having a proximal end and a distal end, the proximal end of the outflow cannula coupled to the pump casing at the first outlet, the distal end of the outflow cannula configured to be attached to an aorta of the patient; and
an inflow cannula coupled to the pump casing at the first inlet, the inflow cannula comprising:
a distal end of the inflow cannula;
a proximal end of the inflow cannula opposite the distal end of the inflow cannula along a longitudinal axis of the inflow cannula, the distal end of the inflow cannula configured to be connected to the heart of the patient or a blood vessel of the patient in order to establish a fluid communication between the blood pump and the heart of the patient or between the blood pump and the blood vessel of the patient, respectively;
a distal portion of the inflow cannula including the distal end of the inflow cannula;
a proximal portion of the inflow cannula including the proximal end of the inflow cannula,
wherein the proximal portion of the inflow cannula and distal portion of the inflow cannula are formed as a single piece; and

an intermediate portion placed over the single piece of the distal portion of the inflow cannula and the proximal portion of the inflow cannula, wherein the intermediate portion allows twisting thereof with a lower force than at least one of the distal portion of the inflow cannula and the proximal portion of the inflow cannula,
wherein the intermediate portion is configured to be fully occluded by twisting thereof,
wherein at least a portion of the intermediate portion is configured to be permanently attached to the heart of the patient or the blood vessel of the patient, and
wherein the intermediate portion comprises an attachment member at a distal end of the intermediate portion, wherein the attachment member comprises a disc, a plate, or a sheet.

4. The blood pump of claim 3 , wherein the attachment member comprises a continuous disc, a continuous plate, or a continuous sheet.

5. A blood pump for supporting a heart of a patient, the blood pump comprising:
a pump casing including at least a first inlet and a first outlet;
an impeller disposed in the pump casing, the impeller configured to draw blood into the pump casing;
an outflow cannula having a proximal end and a distal end, the proximal end of the outflow cannula coupled to the pump casing at the first outlet, the distal end of the outflow cannula configured to be attached to an aorta of the patient; and
an inflow cannula coupled to the pump casing at the first inlet, the inflow cannula comprising:
a distal end of the inflow cannula;
a proximal end of the inflow cannula opposite the distal end of the inflow cannula along a longitudinal axis of the inflow cannula, the distal end of the inflow cannula configured to be connected to the heart of the patient or a blood vessel of the patient in order to establish a fluid communication between the blood pump and the heart of the patient or between the blood pump and the blood vessel of the patient, respectively;
a distal portion of the inflow cannula including the distal end of the inflow cannula;
a proximal portion of the inflow cannula including the proximal end of the inflow

Assignees

• Abiomed Europe Gmbh

Inventors

• Siess Thorsten
• Spanier Gerd
• Aboulhosn Walid

Classifications

• A61M2210/125

  Heart · CPC title

• A61M2205/04

  implanted · CPC title

• A61M60/859

  Connections therefor · CPC title

• A61M60/178

  drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices · CPC title

• A61M60/216

  including a rotating member acting on the blood, e.g. impeller · CPC title