# US 9,433,715 B2 · Stable aortic blood pump implant

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- Number: US 9,433,715 B2
- Document ID: US9433715B2
- Status: Granted
- Kind: B2
- Application number: 13/971,852
- Filed: 2013-08-21
- Published: 2014-03-27
- Granted: 2016-09-06
- Earliest claimed: 2003-01-31
- Assignees: L. Vad Technology, Inc.
- Applicants: L-Vad Technology, Inc.
- Inventors: Adrian Kantrowitz; Robert Merrill Smith
- Web page: https://patentgrep.com/patent/US9433715B2

## CPC

- A61M 60/295: Balloon pumps for circulatory assistance
- A61M 60/139: inside the aorta, e.g. intra-aortic balloon pumps
- A61M 60/861: Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body
- A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

An aortic blood pump is described that is secured to a patient aorta that can be inflated and deflated in response to selective communication with a source of pressurized fluid or air. An expanded stent creates an area in with the pump and inflate and deflate. A system is also detailed including the pump and an external air line external to a patient body.

## Claims

### Claim 1

An implantable aortic blood pump, comprising:
an elongate shell having a contoured concave inner surface terminating at a peripheral side edge tapering at both ends to approximate the geometrical intersection of the elongate shell with a substantially cylindrical native human aorta; a suture flange coupled to the elongate shell;
at least one passage integral with and through the shell to define an opening in the inner surface, the at least one passage integral with the shell and having an angle relative to the inner surface of between 5 and 30 degrees;
an elongate flexible membrane continuously bonded to said shell adjacent to the peripheral side edge, said flexible membrane in cooperation with said shell defining an enclosed inflatable chamber in fluid communication with the at least one passage and adapted to deflect outward from said elongate shell, the shell being more rigid than the membrane;
a stent composed of a wire-mesh material disposed between the suture flange and the shell, the stent being attached at said shell and positioned to increase shell rigidity, the stent having an expanded state that defines a substantially open cylindrical area for expansion of said flexible membrane; and
wherein the suture flange includes a piece of sheet material shaped to seal said shell to an incised wall of a native human aorta.

### Claim 2 (depends on 1)

The system of claim 1 wherein the stent is partially embedded in a wall of the shell.

### Claim 3 (depends on 1)

The system of claim 1 wherein the stent is attached to an outer surface of the shell.

### Claim 4 (depends on 1)

The system of claim 1 wherein the suture flange is bonded to an outer surface of the shell and is freely projecting.

### Claim 5

A cardiac assist system comprising an aortic blood pump implantable in a patient aorta internal to a patient body, the pump comprising:
an elongate shell having a contoured concave inner surface terminating at a peripheral side edge tapering at both ends to approximate the geometrical intersection of the elongate shell with a substantially cylindrical native human aorta and where the elongate shell is adapted to be joined to an interior incised wall of the patient aorta;
at least one passage integral with and through the shell to define an opening in the inner surface, the at least one passage integral with the shell and having an angle relative to the inner surface of between 5 and 30 degrees;
an elongate flexible membrane continuously bonded to said shell adjacent to the peripheral side edge, said flexible membrane in cooperation with said shell defining an enclosed inflatable chamber in fluid communication with the passage and adapted to deflect outward. from said elongate shell;
a suture flange;
a stent composed of a wire-mesh material disposed between the suture flange and the shell and having an expanded state defining a substantially open cylindrical area for expansion of said flexible membrane;
the suture flange including a piece of sheet material attached to the shell and shaped to seal said shell to the incised wall of the native human aorta; and
a gas tube adapted to afford fluid communication between the aortic blood pump and a region external to the patient body.

### Claim 6 (depends on 5)

The system of claim 5 further comprising a percutaneous access device intermediate between the gas tube and the exterior of the patient's body.

### Claim 7 (depends on 5)

The system of claim 5 further comprising a compressor in fluid communication with the gas tube for delivering a pulsatile gas flow, an energy source that powers the compressor, an air tank that supplies a gas for the pulsatile gas flow, and electronics necessary to control the operation of the system.

### Claim 8 (depends on 5)

The system of claim 5 further comprising an air tank containing a supply of air communicated via the gas tube to the pump.

### Claim 9 (depends on 5)

The system of claim 5 wherein the stent is partially embedded in a wall of the shell.

### Claim 10 (depends on 5)

The system of claim 5 wherein the stent is attached to an outer surface of the shell.

### Claim 11 (depends on 10)

The system of claim 10 wherein the suture flange is bonded to an outer surface of the shell and is freely projecting.

### Claim 12 (depends on 5)

The system of claim 5 wherein the shape of the pump is custom contoured with prior medical scans of the individual's aorta and information about the anatomical characteristics of the aorta.

### Claim 13 (depends on 5)

The system of claim 5 wherein the suture flange is bonded to the outer surface of the shell.