US 11,950,889 B2Granted

Ventricular assist device

AssigneeMagenta Medical Ltd.

InventorsYosi Tuval, Zev Sohn, Ehud Schwammenthal, Gad Lubinsky

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Abstract

Apparatus and methods are described including a left ventricular assist device. The left ventricular assist device includes an impeller configured to be placed inside a subject's left ventricle, and to pump blood from the subject's left ventricle to the subject's aorta, by rotating. A frame is disposed around the impeller. A tube traverses the subject's aortic valve, such that a proximal portion of the tube is disposed within the subject's aorta and a distal portion of the tube is disposed within the subject's left ventricle. The distal portion of the tube defines one or more blood inlet openings that are configured to allow blood to flow from the subject's left ventricle into the tube. A braided element is configured to prevent inner structures of the left ventricle from passing into the one or more blood inlet openings. Other applications are also described.

Claims21

Dependent claims

An apparatus comprising:

a left ventricular assist device comprising:
an impeller configured to be placed inside a left ventricle of a subject, and to pump blood from the subject's left ventricle to an aorta of the subject, by rotating;
a tube configured to traverse an aortic valve of the subject, such that a proximal portion of the tube is disposed within the subject's aorta and a distal portion of the tube is disposed within the subject's left ventricle, the distal portion of the tube being configured to allow blood to flow from the subject's left ventricle into the tube;
a frame disposed around the impeller and at least partially within the distal portion of the tube, the frame comprising struts and being configured such as to allow blood to flow into the distal portion of the tube via the struts of the frame;
and
a braided element disposed distally to the impeller in an entirety thereof, the braided element configured to prevent inner structures of the left ventricle from passing into the distal portion of the tube.

3 more elements

A method comprising:

placing a left ventricular assist device into a left ventricle of a subject, the left ventricular assist device including:
a tube configured to traverse an aortic valve of the subject, such that a proximal portion of the tube is disposed within an aorta of the subject and a distal portion of the tube is disposed within the subject's left ventricle,
an impeller disposed within the distal portion of the tube,
a frame disposed around the impeller, and at least partially within the distal portion of the tube, the frame comprising struts and being configured such as to allow blood to flow into the distal portion of the tube via the struts of the frame;
and
a braided element;
operating the impeller such as to pump blood into the tube via the distal portion of the tube that is disposed within the subject's left ventricle;
and
deploying the braided element distally to the impeller in an entirety thereof, such as to prevent inner structures of the left ventricle from passing into the distal portion of the tube.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/952,444Filed 19 Nov 2020 · continuation
Priority: 10 Jan 2018
Published: US 2021/0069395 A111 Mar 2021
Granted: 9 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification46 codes

A61M 60/422
For non-positive displacement blood pumps: the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61B 5/0215
Measuring pressure in heart or blood vessels: by means inserted into the body
A61B 5/283
For electrocardiography [ECG]: invasive
A61M 60/13
Implantable via, into, inside, in line, branching on, or around a blood vessel: by means of a catheter allowing explantation, e.g. catheter pumps…

Family

Application62/615,538Us provisional application · filed 10 Jan 2018
Application62/665,718Us provisional application · filed 2 May 2018
Application62/681,868Us provisional application · filed 7 Jun 2018
Application62/727,605Us provisional application · filed 6 Sep 2018
PCT/IB2019/050186Parent of this continuation · filed 10 Jan 2019
Application16/281,237Parent of this continuation · filed 21 Feb 2019
US 2021/0069395 A1Pre-grant publication · published 11 Mar 2021
US 10,994,120 B2Parent of this continuation
US 2019/0209753 A1Published application
US 11,950,889 B2This patent

From the US filing history. Foreign family members aren’t listed.