# US 12,760,724 B2 · Pulsatile fluid pump system

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- Number: US 12,760,724 B2
- Document ID: US12760724B2
- Status: Granted
- Kind: B2
- Application number: 18/826,727
- Filed: 2024-09-06
- Published: 2024-12-26
- Granted: 2026-10-13
- Earliest claimed: 2021-02-23
- Assignees: VentriFlo, Inc.
- Applicants: VentriFlo, Inc.
- Inventors: Douglas Edward Vincent; Brian Bailey; Conrad Bzura; David Butz; David Olney; Eric Smith; George Koenig; James W. Poitras; Jeffrey P. Naber; Judy Labonté; Kathleen Vincent; Lawrence Kuba; Matthew J. Murphy; Patrick Shields; Roger Greeley
- Web page: https://patentgrep.com/patent/US12760724B2

## CPC

- F04B 43/04: Pumps having electric drive
- F04B 39/14: Provisions for readily assembling or disassembling
- F04B 53/22: Arrangements for enabling ready assembly or disassembly
- F04B 43/0081: {systems, control, safety measures}
- F04B 49/065: {and making use of computers}
- F04B 2203/04: of linear electric motors
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)

## Abstract

A pulsatile fluid pump system includes a pump-valving assembly including a chamber and a diaphragm assembly coupled to the chamber and including a flexible diaphragm. The diaphragm assembly and the pump-valving assembly are configured as an integral pump assembly. The system further includes a linear motor having a magnet and a coil, the magnet moving in relation to the coil, the coil having an electrical input. The system also includes a control housing rigidly coupled to the linear motor and a controller system having an electrical output coupled to the electrical input of the coil, the controller system defining an electrical waveform at the electrical output to cause desired operation of the diaphragm. The integral pump assembly is configured to be removably coupled to the control housing, and the diaphragm assembly of the integral pump assembly is configured to be removably coupled to the linear motor.

## Claims

### Claim 1

A pulsatile fluid pump system comprising:
a pump-valving assembly including a chamber and a set of ports;
a diaphragm assembly coupled to the chamber and including an edge-mounted flexible diaphragm;
wherein the diaphragm assembly and the pump-valving assembly are configured (i) as an integral pump assembly surrounded by a flange having a pair of opposed sides and (ii) to implement pumping when the diaphragm assembly is reciprocated in an axial direction;
a control housing configured to removably and slideably receive the integral pump assembly on an exposed surface of the control housing and to couple to the integral pump assembly when the integral pump assembly is caused to slide along the exposed surface of the control housing in a direction transverse to the axial direction, the control housing including:
a channel having a pair of opposed sides configured to receive the flange when the control housing is slideably coupled to the integral pump assembly, and to prevent rotation of the diaphragm assembly while the control housing is coupled to the integral pump assembly;
a push rod configured to removably and slideably couple mechanically to the diaphragm assembly when the control housing is slideably coupled to the integral pump assembly;
a linear motor coupled to the push rod and configured to reciprocate the push rod in the axial direction; and a controller system electrically coupled to the linear motor and configured to cause a desired operation of the linear motor.

### Claim 2 (depends on 1)

The pulsatile fluid pump system of claim 1, wherein the diaphragm assembly further comprises a coupler having a slot configured to slideably receive a head and an upper portion of the push rod.

### Claim 3 (depends on 2)

The pulsatile fluid pump system of claim 2, wherein the integral pump assembly includes a pump housing having a neck in which the coupler reciprocates.

### Claim 4 (depends on 3)

The pulsatile fluid pump system of claim 3 wherein the neck is configured to maintain axial and rotational alignment of the coupler.

### Claim 5 (depends on 1)

The pulsatile fluid pump system of claim 1, wherein the set of ports includes an inlet ball check valve and an outlet ball check valve.

### Claim 6 (depends on 1)

The pulsatile fluid pump system of claim 1, wherein the edge-mounted diaphragm comprises three layers.

### Claim 7 (depends on 1)

The pulsatile fluid pump system of claim 1, wherein the pump-valving assembly is preload sensitive and afterload sensitive.

### Claim 8 (depends on 1)

The pulsatile fluid pump system of claim 1, wherein at least one of the flange and the channel has a set of compliant members to physically bias the flange in the control housing.

### Claim 9 (depends on 8)

The pulsatile fluid pump system of claim 8, wherein each compliant member includes a spring.

### Claim 10 (depends on 9)

The pulsatile fluid pump system of claim 9, wherein the set of compliant members includes a set of ball detents.