Ventriflo, Inc.

Baxter International Inc.

Baxter Healthcare Sa

Fluidnet Corporation

Design Mentor, Inc.

Douglas E Vincent

Matthew J Murphy

George Koenig

David Olney

James W Poitras

Roger D Greeley

Eric W Smith

Lawrence M Kuba

Gideon Hecht

Jeffrey Alan Carlisle

Kathleen Vincent

Charles E Kramer

Bruce E Huitt

John M Kirkman, Jr

Brian Bailey

Patrick Shields

Judy Labonté

Jeffrey P Naber

Conrad Bzura

Michael R Cole

Laura S Cleminson

David Butz

Judy LabontÉ

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.

Pulsatile fluid pump system

A diaphragm assembly for a pulsatile fluid pump includes an edge-mounted flexible diaphragm, the diaphragm configured for operation cyclically between a diastole mode and a systole mode. The diaphragm assembly further includes a systolic distribution brace having an interior wall configured to cup a portion of the outside surface of the diaphragm, and a diastolic plate, embedded in the diaphragm, mechanically coupled to a portion of the inside surface of the diaphragm. In the course of the systole mode, force is applied across the maximum radial extent of the systolic distribution brace, so as to impart tension in the diaphragm around the periphery of the systolic distribution brace. In the course of the diastole mode, force is applied across the maximum radial extent of the diastolic plate, so as to impart tension in the diaphragm around the diastolic plate.

Diaphragm assembly for a pulsatile fluid pump

A pump-valving assembly for a pulsatile fluid pump includes a pumping chamber, an inlet port, and an outlet port. The pump-valving assembly further includes an inlet ball check-valve assembly, first and second tapered tracts disposed between the inlet port and the pumping chamber, an outlet ball check-valve assembly, and third and fourth tapered tracts disposed between the pumping chamber and outlet port. The first tapered tract expands in cross sectional area from the inlet port to the inlet ball check valve assembly, and the second tapered tract decreases in cross sectional area from the inlet ball check valve assembly to the chamber. The third tapered tract expands in cross sectional area from the chamber to the outlet ball check valve assembly and the fourth tapered tract decreases in cross sectional area from the outlet ball check valve assembly to the outlet port.

Pump-valving assembly for a pulsatile fluid pump

A pulsatile fluid pump apparatus includes an integral pump assembly employing a flexible diaphragm in a diaphragm assembly; a pulsatile fluid pump system including a control housing, for removably receiving the integral pump assembly, the control housing and the integral pump assembly being configured for operation, in a first mode, so that the pulsatile fluid pump system reciprocally actuates the diaphragm assembly to cause pumping automatically; and a manual driver assembly, wherein the integral pump assembly is configured, in a second mode, in the absence of actuation of the diaphragm assembly by the pulsatile fluid pump system, to removably receive the manual driver assembly to support manual actuation and operation of the diaphragm assembly.

Manual driver assembly for a pulsatile fluid pump

A pulsatile fluid pump system for driving a fluid pump assembly includes a reciprocating linear motor having a magnet and a coil, the magnet moving in relation to the coil, the coil having an electrical input. The pulsatile fluid pump system further includes a controller system having an electrical output coupled to the electrical input of the coil, and the controller system is configured to execute a waveform program defining an electrical waveform at the electrical output. The waveform program is configured to control operation of the linear motor by modification of a feature, selected from the group consisting of amplitude, frequency, shape, and combinations thereof, of the electrical waveform at the electrical output. The waveform program is further configured to accept a set of user-specifiable parameters defining the performance of the linear motor and to modify the electrical waveform in response to such parameters.

System for driving a pulsatile fluid pump

Temperature compensation is applied to correct for temperature mismatch between a reference chamber and a disposable chamber in a pneumatic pumping system for dialysis fluid for peritoneal dialysis. The mismatch creates an error in the calculation of pumping volume of dialysate fluid. Applying a correction for the temperature mismatch helps to more precisely control the volume of dialysate that is metered to the patient. Also disclosed are ways to keep temperatures constant and to use temperature sensors to accurately measure the temperatures of the chambers. In other aspects, the temperature of the dialysate fluid itself may be measured and used to apply a correction to the volume of fluid that is pumped to the patient.

Temperature compensation for pneumatic pumping system

A fluid flow control system using flow rate changes to extract additional information from an in-line flow sensor. The system provides the ability to determine a position of a movable flow sensor element of a flow sensor by illuminating a photosensitive pixel array with a light source to create a first set of pixel intensity values introducing an abrupt change to the fluid driving pressure, illuminating the photosensitive pixel array with a light source to create a second set of pixel intensity values, and calculating the difference between the first and second sets of pixel intensity values as a function of pixel position.

Impulse analysis for flow sensor-based fluid control system

A pumping system, FIG.provides a physiological pulsatile flow and includes controller, a pump drive headcoupled to a motorand a fluid housinghaving at least one port. The portincludes a ball valve retainer region, a valve seat, and an occluder balldisposed in the ball valve retainer region. During operation, the motorforces the fluid in and out the fluid housingand causes the occluder ballto move from a first position whereby the fluid cannot pass through the port, to a second position whereby the fluid moves annular to and generally around the occluder ball. This movement creates a slight flow reversal that 'breaks up' any blood clots that may form. The pumping system may be used as part of a cardiopulmonary bypass system, a ventricular assist device (VAD) and/or a heart pump.

Fluid pump

A fluid flow control system using flow rates to extract additional information from an in-line flow sensor. The system provides the ability to determine a position of a movable flow sensor element of a flow sensor by illuminating a photosensitive pixel array with a light source to create a first set of pixel intensity values introducing an abrupt change to the fluid driving pressure, illuminating the photosensitive pixel array with a light source to create a second set of pixel intensity values, and calculating the difference between the first and second sets of pixel intensity values as a function of pixel position.

A pumping systemprovides a physiological pulsatile flow and includes controller, a pump drive headcoupled to a motorand a fluid housinghaving at least one port. The portincludes a ball valve retainer region, a valve seat, and an occluder balldisposed in the ball valve retainer region. During operation, the motorforces the fluid in and out the fluid housingand causes the occluder ballto move from a first position whereby the fluid cannot pass through the port, to a second position whereby the fluid moves annular to and generally around the occluder ball. This movement creates a slight flow reversal that 'breaks up' any blood clots that may form. The pumping system may be used as part of a cardiopulmonary bypass system, a ventricular assist device (VAD) and/or a heart pump.

Growing community of inventors

Pelham, NH, United States of America

Douglas E Vincent