US Patent No: 5,824,213

Number of patents in Portfolio can not be more than 2000

Separable hemodialysis system

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A hemodialysis system comprises the following: a dialysate handling unit for providing dialysate to the patient. This unit comprises a hemodialysis solution pump and apparatus for monitoring hemodialysis solution safety such as a conductivity tester. Additionally a solution heater and appropriate conventional controls can be provided, as well as a proportioning system, an ultrafiltration measuring unit, and other known apparatus for handling dialysis solution. A blood handling unit is also provided, which comprises a membrane dialyzer and holder, a blood pump, blood flow tubing and safety equipment for monitoring blood flow as it is pumped through the arterial/venous blood conduit set tubing from the patient, through the membrane dialyzer, and back to the patient. A first conduit is present for conveying fresh dialysate from the dialysate handling unit to the blood handling unit (or directly to the membrane dialyzer). A second conduit is provided for conveying spent hemodialysis solution away from the blood handling unit. By this invention, the dialysate handling unit and the blood handling unit are separate from and movable relative to each other while the hemodialysis is being performed. Significant economic and functional advantages can be achieved.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NXSTAGE MEDICAL, INC.LAWRENCE, MA112

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Utterberg, David S Seattle, WA 116 1739

Cited Art

Patent Info (Count) # Cites Year
 
BAXTER INTERNATIONAL INC. (3)
4,293,413 Dialyzer blood circuit and bubble traps 37 1979
4,324,662 Flow reversal in a dialyzer 17 1979
5,326,476 Method and apparatus for kidney dialysis using machine with programmable memory 61 1992
 
BIO-FLO LIMITED (1)
5,372,709 Fluid flow control apparatus 58 1993
 
CESKE VYSOKE UCENI TECHNICKE (1)
4,353,368 Device for hemodialysis 60 1980
 
CHILDREN'S HOSPITAL MEDICAL CENTER (1)
5,211,849 Hemofiltration system and method 84 1991
 
GAMBRO RENAL PRODUCTS, INC. (1)
4,897,184 Fluid flow apparatus control and monitoring 36 1986
 
HALLIBURTON ENERGY SERVICES, INC. (1)
2005/0183,502 Motion-responsive coupled masses 2005
 
MEDISYSTEMS TECHNOLOGY CORPORATION (1)
5,520,640 Blood air trap chamber 36 1994

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
RENAL SOLUTIONS, INC. (5)
6,627,164 Sodium zirconium carbonate and zirconium basic carbonate and methods of making the same 16 2000
7,033,498 Cartridges useful in cleaning dialysis solutions 13 2001
6,878,283 Filter cartridge assemblies and methods for filtering fluids 13 2001
6,818,196 Zirconium phosphate and method of making the same 10 2003
7,101,519 Zirconium basic carbonate and methods of making the same 6 2004
 
NXSTAGE MEDICAL, INC. (3)
6,290,665 Blood set priming method and apparatus 6 1998
6,387,069 Blood set priming method and apparatus 9 1999
7,166,084 Blood set priming method and apparatus 5 2002
 
BAXTER INTERNATIONAL INC. (2)
6,143,181 Dialysis machine with control panel 29 1998
D492034 Base for a medical machine 2 2002
 
CHEMICA TECHNOLOGIES, INC. (2)
7,435,342 Dialysate regeneration system for portable human dialysis 1 2004
7,988,854 Dialysate regeneration system for portable human dialysis 0 2008
 
NEPHROS, INC. (2)
7,534,349 Dual stage ultrafilter devices in the form of portable filter devices, shower devices, and hydration packs 2 2006
8,343,347 Dual stage ultrafilter devices in the form of portable filter devices, shower devices, and hydration packs 0 2009
 
HHD LLC, A DELAWARE LIMITED LIABILITY COMPANY (1)
6,146,523 User interface and method for control of medical instruments, such as dialysis machines 44 1998
 
MEDICA S.R.L. (1)
7,775,375 Redundant ultrafiltration device 0 2006