Baxter International Inc.

Baxter Healthcare Sa

Other

Fenwal, Inc.

David B Howard

Robert W Childers

Sherwin S Shang

Brian Lauman

Alex Anping Yu

Tahua Yang

Joseph H Bowman

Benjamin Kellam

Andrew D Hopping

Richard Avoy

John Booras

Paul Grippo

David Vescovi

Jeffrey W Jerrell

Peter A Hopping

Daniel R Lynn

Allen R Wons

John C Burnham

Rodney S Kenley

Julian P Breillatt, Jr

Prakash R Keshaviah

Dennis C Berry

Jason Cartwright

Julian C Breillatt

Rohit Vishnoi

John Niedospial

A system for performing a dialysis treatment includes a dialysis fluid machine; a disposable dialysis fluid carrying member operable with the dialysis fluid machine; and a venting filter provided by the disposable member, the venting filter positioned and arranged to be coupled along with the disposable member to the dialysis fluid machine to perform the dialysis treatment and to vent air from the disposable member.

Dialysis system having a vented disposable dialysis fluid carrying member

A dialysis system includes a disposable cassette including a flexible sheet and a plurality of dialysis fluid pathways, a plurality of actuators operable with the flexible sheet to direct dialysis fluid through the plurality of dialysis fluid pathways, and a controller configured to (i) determine at least one limitation of the plurality of dialysis fluid pathways, (ii) generate a flow schedule indicating how dialysis fluid should be directed through the plurality of dialysis fluid pathways in accordance with the at least one limitation, and (iii) control the plurality of actuators so that dialysis fluid is pumped through the plurality of dialysis fluid pathways according to the flow schedule.

Dialysis system and method for pumping and valving according to flow schedule

A peritoneal dialysis system includes a disposable cassette including a flexible sheet; a hardware unit including (i) at least one pump actuator and piston head moved by the pump actuator, (ii) at least one valve actuator, (iii) at least one sensor, and (iv) a disposable cassette interface for interfacing with the disposable cassette, the disposable cassette interface including: (a) at least one pump aperture, the at least one piston head moveable out of and retractable into the at least one pump aperture to move a corresponding pumping portion of the flexible sheet of the disposable cassette, the piston head moving within a vacuum chamber, the vacuum chamber enabling a vacuum to be pulled around the piston head to the flexible sheet of the disposable cassette; (b) at least one valve aperture, at least a portion of the at least one valve actuator located in the valve aperture to move a valve portion of the flexible sheet of the disposable cassette; and (c) at least one sensor aperture, the at least one sensor located in the at least one sensor aperture, the at least one sensor operable with a sensor portion of the flexible sheet of the disposable cassette.

Dialysis system and method for cassette-based pumping and valving

A dialysis system includes a dialysis instrument and a disposable cassette. The dialysis instrument includes three pump actuators. The disposable cassette includes three dialysate pump chambers. The three dialysate pump chambers are positioned and arranged to operate with the three dialysate pump actuators of the dialysis instrument.

Dialysis system having disposable cassette

A medical instrument includes a sound card or an internal capability for generating sounds from a digital music or sound file. The medical instrument is one which generates unwanted noise and is constantly in the presence of a patient or an operator, and may be in a home, a clinic, a laboratory, or other intimate setting. For instance, a patient may be typically connected for hours to a hemodialysis machine that has a noisy pump. A blood-plasma volunteer may be hooked to a noisy blood separation machine for a period of time. A laboratory technician may work in close proximity to a sample preparation machine that constantly gurgles and whirrs. In each instance, a sound card and a speaker can generate previously-recorded masking noises that make that the presence and operation of the machine more tolerable.

User selectable masking sounds for medical instruments

A dialysis system includes a dialysis instrument; a disposable cassette, the cassette including a rigid portion defining at least one pumping chamber, a pouch fitted over the rigid portion, the pouch including at least one flexible sheet sealed so as to provide a sealed environment inside the pouch; and wherein the instrument is configured to press the at least one flexible sheet against the pumping chamber to seal the pumping chamber for operation.

A dialysis machine includes: a hardware unit including at least one pump actuator, at least one valve actuator and a cassette interface, the cassette interface including: (i) a plate that abuts the cassette; (ii) at least one pump aperture defined by the plate; (iii) at least one pump head moveable out of and retractable into the at least one pump aperture to operate a pumping portion of the cassette; (iv) at least one valve aperture defined by the plate; (v) at least one valve apparatus moveable out of and retractable into the at least one valve aperture to operate a valve portion of the cassette; (vi) at least one sensor aperture defined by the plate; and (vii) at least one sensor located in the least one sensor aperture, the at least one sensor operable with a sensor portion of the cassette.

System including machine interface for pumping cassette-based therapies

A method for aligning a disposable cassette within a dialysis machine includes actuating a pump head toward the disposable cassette and to contact a pumping portion of the disposable cassette and shift the disposable cassette if need be into proper operational alignment and locking the disposable cassette in place.

Cassette alignment and integrity testing for dialysis systems

Blood collection systems include an integral flexible filter to remove leukocytes from blood components.

Blood collection systems including a flexible filter

The present invention provides systems, methods and apparatuses for medical fluid delivery systems that employ a pumping cassette. In particular, the present invention provides systems, methods and apparatuses for cassette-based dialysis therapies including hemodialysis, hemofiltration, APD (including tidal modalities) and CFPD. The embodiments described include a combined pump/valve housing, a fail safe pump/valve arrangement, a cassette auto-alignment feature, a pumping membrane material, a multiplexing valve arrangement, an expert fluid pumping management system, an integral port vent and an in-line air separation chamber and combinations of each of these.

Systems, methods and apparatuses for pumping cassette-based therapies

Blood collection systems including an integral, flexible filter

A method for determining the clearance competency of dialyzers utilized in renal hemodialysis comprises measuring the conductivity of a dialysate solution of low initial conductivity while circulating a priming solution of greater conductivity on the blood side of the dialyzer, correlating the rate of dialysis of molecules contained in the printing solution to known clearance rates for urea or other targeted blood impurity for the types and compositions of the particular dialysis membranes being utilized, and calculating the precise length of treatment time or other treatment parameters required to cleanse the blood to be dialyzed of impurities and biotoxins to a predicted target value. Failsafe control means which prevents mistakes in connecting unsafe fluid sources to the dialyzer is also provided.

Growing community of inventors

Crystal Lake, IL, United States of America

David B Howard