1
Rodney S Kenley, Dennis M Treu, Frederick H Peter Jr, Thomas M Feldsein, Kenneth E Pawlak, Wayne F Adolf, Linda Roettger: Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof. Aksys, Banner & Witcoff, January 7, 1997: US05591344 (221 worldwide citation)

A dialysis machine is disclosed that incorporates a water treatment module, a dialysate preparation module having a dialysate circuit, and an extracorporeal circuit including a dialyzer and arterial and venous blood lines that connect to the patient. The machine accomplishes on-line disinfection of ...


2
Rodney S Kenley, Dawn Matthews, Dennis M Treu, Frederick H Peter Jr, Thomas M Feldsein: Method of rinsing back blood to hemodialysis patient. Aksys, McDonnell Boehnen Hulbert & Berghoff, November 25, 1997: US05690831 (141 worldwide citation)

A method is described herein for automatically rinsing blood back to a patient. The method comprises the steps of pumping dialysate (or, alternatively, saline solution) through a dialyzer into an extracorporeal circuit, and pumping blood in the extracorporeal circuit out the arterial and venous line ...


3
Frederick H Peter Jr, Eric Bell, Thomas M Feldsein: Hemodialysis machine with automatic priming by induced pressure pulses. Aksys, McDonnell Boehnen Hulbert & Berghoff, January 26, 1999: US05863421 (136 worldwide citation)

A hemodialysis machine is described that has an extracorporeal circuit that is primed automatically prior to connection of the patient to the machine. The priming is accomplished by filling the extracorporeal circuit with a priming fluid, such as a saline or dialysate solution or blood. The blood pu ...


4
Rodney S Kenley, Dennis M Treu, Tom L Brose, Thomas M Feldsein, Kenneth E Pawlak: Methods for ultrafiltration control in hemodialysis. AKSYS, McDonnell Boehnen Hulbert & Berghoff, March 10, 1998: US05725776 (128 worldwide citation)

Methods and apparatus for increasing the accuracy of ultrafiltration in a dialysis machine and decreasing the time required for dialysis. The machine inclused a substantially non-compliant tank for mixing and storing a batch of dialsyate. In a preferred form, the tank is a hollow vessel made from a ...


5
Rodney S Kenley, Dawn Matthews, Douglas L Wilkerson, Joel DeJesus, Tom L Brose, Andrew Gebhardt, Lori A Plummer, Frederick H Peter Jr, Russel L Sage, Dennis M Treu, Michael Edward Wiklund, William R Dolan, Shawn O Barrett: User interface and method for control of medical instruments, such as dialysis machines. Aksys, McDonnell Boehnen Hulbert & Berghoff, November 14, 2000: US06146523 (106 worldwide citation)

A user interface for a medical instrument such as a dialysis machine is described which uses both a touch screen and at least one hard key off of the touch screen to effectuate a change in a parameter associated with the operation of the machine or the treatment session. The user interface is connec ...


6
Rodney S Kenley, Dawn Matthews, Douglas L Wilkerson, Joel DeJesus, Tom L Brose, Andrew Gebhardt, Lori A Plummer, Frederick H Peter Jr, Russel L Sage, Dennis M Treu, Michael Edward Wiklund, William R Dolan, Shawn O Barrett: User interface and method for control of medical instruments, such as dialysis machines. AKSYS, McDonnell Boehnen Hulbert & Berghoff, August 4, 1998: US05788851 (90 worldwide citation)

A user interface for a medical instrument such as a dialysis machine is described which uses both a touch screen and at least one hard key off of the touch screen to effectuate a change in a parameter associated with the operation of the machine or the treatment session. The user interface is connec ...


7
Dawn Matthews, Dennis M Treu: Dialysis machine with leakage detection. AKSYS, McDonnell Boehnen Hulbert & Berghoff, October 7, 1997: US05674390 (87 worldwide citation)

A dialysis machine is described which provides for the detection of leakage anywhere in the machine. The machine includes integral water treatment, dialysate preparation and extracorporeal circuit modules. The floor of the machine is constructed in a non-horizontal manner so as to provide a fluid ca ...


8
Rodney S Kenley, Seema A Kapadia, Christine F Schroeder, Thomas M Feldsien, Michael Duch, Dennis M Treu, Frederick H Peter Jr: Blood tubing set integrity tests for extracorporeal circuits. Aksys, McDonnell Boehnen Hulbert & Berghoff, April 4, 2000: US06044691 (87 worldwide citation)

Several tests are described for verifying the integrity of the extracorporeal circuit of a medical instrument, such as a dialysis machine. One test verifies the condition of the blood tubing set. Another test verifies that the clamps in the arterial and venous lines adequately occlude the arterial a ...


9
Rodney S Kenley, Dennis M Treu: Disinfection of dialysis machine. AKSYS, McDonnell Boehnen Hulbert & Berghoff, July 29, 1997: US05651893 (82 worldwide citation)

High level disinfection of a home hemodialysis machine is achieved without the use of disinfection chemicals. The machine has a water treatment module, an extracorporeal circuit and a dialysate circuit. Purified water is heated to a high level disinfection temperature, such as 75 or 80 degrees C. Th ...


10
Chris N Fredericks: Calibration of pumps, such as blood pumps of dialysis machine. Aksys, McDonnell Boehnen Hulbert & Berghoff, February 10, 2004: US06691047 (82 worldwide citation)

A method of calibrating a pump that is subject to variations in flow rate based on inlet pressure variations, such as a peristaltic pump found in medical instruments. The pressure at the inlet of the pump is measured and recorded during prior uses of the pump. A mean or average inlet pressure is der ...