# US 2016/0354524 A1 · Devices, methods and systems for counterpulsation and blood flow conduit connection

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- Number: US 2016/0354524 A1
- Document ID: US20160354524A1
- Status: Published application
- Kind: A1
- Application number: 15/241,590
- Filed: 2016-08-19
- Published: 2016-12-08
- Earliest claimed: 2011-08-11
- Assignees: ABIOMED, Inc.
- Applicants: Abiomed, Inc.
- Inventors: Robert Dowling; Robert T.V. Kung; Paul Spence; Thorsten Siess; Gerd Spanier; Eric Gratz; Caitlyn Hastie
- Web page: https://patentgrep.com/patent/US20160354524A1

## CPC

- A61M 1/3653: {Interfaces between patient blood circulation and extra-corporal blood circuit}
- A61B 17/11: for performing anastomosis; Buttons for anastomosis
- A61F 2/0077: {Special surfaces of prostheses, e.g. for improving ingrowth (A61F2/30767 takes precedence)}
- A61F 2/064: {with special features to facilitate anastomotic coupling (anastomosis of natural blood vessels A61B17/11)}
- A61M 1/3655: {Arterio-venous shunts or fistulae}
- A61M 25/0043: {characterised by structural features}
- A61M 25/0071: {Multiple separate lumens (multiple separate lumens throughout the catheter A61M25/0026)}
- A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable}
- A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
- A61M 60/165: implantable in, on, or around the heart
- A61M 60/268: the displacement member being flexible, e.g. membranes, diaphragms or bladders
- A61M 60/274: the inlet and outlet being the same, e.g. para-aortic counter-pulsation blood pumps
- A61M 60/405: the force acting on the blood contacting member being hydraulic or pneumatic
- A61M 60/427: the force acting on the blood contacting member being hydraulic or pneumatic
- A61M 60/857: Implantable blood tubes
- A61B 2017/00884: {enhancing wound closure}
- A61B 2017/1135: {End-to-side connections, e.g. T- or Y-connections}
- A61F 2250/0026: differing in surface structures
- A61M 2025/006: {having a special surface topography or special surface properties, e.g. roughened or knurled surface}
- A61M 2206/10: Flow characteristics
- 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)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

A blood flow conduit includes a first conduit portion defining a first portion of a lumen; and a second conduit portion defining a second portion of a lumen. At least one of the first or second conduit portions may include a tip portion and the other of the first or second conduit portions may include an enlarged area.

## Claims

### Claim 1

A blood flow conduit, comprising:
a first conduit portion defining a first portion of a lumen; and
a second conduit portion defining a second portion of a lumen;
wherein at least one of the first or second conduit portions includes a tip portion and the other of the first or second conduit portions includes an enlarged area, the tip portion extending at least partially into the enlarged area in a manner designed to prevent contact between the tip portion and an inner wall of the enlarged area as blood flows through the lumen.

### Claim 2 (depends on 1)

The blood flow conduit of claim 1, wherein the tip portion includes an inner wall with a surface roughness less than a surface roughness of the inner wall of the enlarged area.

### Claim 3 (depends on 2)

The blood flow conduit of claim 2, wherein the tip portion is formed from at least one material selected from the group consisting of metals or polymers, and the enlarged area is formed from a material that promotes tissue or cell ingrowth.

### Claim 4 (depends on 2)

The blood flow conduit of claim 2, wherein the tip portion is formed from at least partially from silicone, and the enlarged area is formed from a fabric or textile.

### Claim 5 (depends on 1)

The blood flow conduit of claim 1, wherein the enlarged area is formed in at least two pieces adapted to be affixed together during a surgical procedure.

### Claim 6 (depends on 1)

The blood flow conduit of claim 1, wherein the tip portion is part of a blood pump.

### Claim 7 (depends on 1)

The blood flow conduit of claim 1, wherein the first and second conduit portions are configured to be affixed together during a surgical procedure.

### Claim 8 (depends on 1)

The blood flow conduit of claim 1, wherein the first and second conduit portions are configured to be affixed together and to a pump during a surgical procedure.

### Claim 9 (depends on 1)

The blood flow conduit of claim 1, further comprising a washer affixed around the tip portion.

### Claim 10 (depends on 1)

A blood flow assist system, comprising:
a blood pump: and
a blood flow conduit as set forth in claim 1.