US Patent No: 5,591,344
Number of patents in Portfolio can not be more than 2000
Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof
Stats
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Jan 7, 1997
Issued date -
Feb 13, 1995
filing date -
08/388,275
serial no -
In Force
status
Importance
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Abstract
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 all the fluid circuits of the machine, including the water treatment module, the dialysate preparation module and extracorporeal circuit, the arterial and venous lines, and the dialyzer, by circulating water heated to a high level disinfection temperature (e.g., 80 degrees C.) through the fluid passages of the machine for a sufficient time (such as an hour) to achieve high level disinfection. After the dialysis session is ended, the patient connects the arterial and venous lines to ports in a disinfection manifold that places the arterial and venous lines into fluid communication with the heated water. Thereafter, the machine is ready to disinfect the fluid circuits including the extracorporeal circuit. In a preferred embodiment, the ports of the disinfection manifold ports include recessed features that permit the hot water to circulate on the interior and exterior surfaces of the arterial and venous line connectors, thereby insuring that the surfaces of connectors themselves are also disinfected.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,371,385 Deaerating liquid | 41 | 1981 | |
| 4,399,030 Rinsing, cleaning and disinfecting dialysate preparation and supply apparatus | 37 | 1981 | |
| 4,676,467 Apparatus for supporting a fluid flow cassette | 37 | 1985 | |
| 4,681,606 Drip chamber | 56 | 1986 | |
| 4,740,755 Remote conductivity sensor having transformer coupling in fluid flow path | 62 | 1986 | |
| 4,825,168 Remote conductivity sensor using square wave excitation | 54 | 1986 | |
| 4,798,090 Apparatus for use with fluid flow transfer device | 70 | 1987 | |
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| 4,227,420 Pressure coupling mechanism in a pressure monitoring assembly | 79 | 1979 | |
| 4,314,480 Venous pressure isolator | 81 | 1980 | |
| 4,526,574 Differential occlusion sensing method and apparatus | 61 | 1983 | |
| 4,707,335 System and apparatus for disinfecting, for reuse, separation devices for blood and associated fluid lines | 17 | 1985 | |
| 5,110,477 Dialyzer clearance check system | 44 | 1990 | |
| 5,326,476 Method and apparatus for kidney dialysis using machine with programmable memory | 61 | 1992 | |
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| 4,411,866 Steam sterilization method for artificial organ assemblies and resultant sterilized product | 32 | 1981 | |
| 4,690,762 Apparatus for removing bubbles from a liquid | 59 | 1986 | |
| 4,919,802 Blood filter | 63 | 1988 | |
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| 4,398,542 Pressure diaphragm | 91 | 1980 | |
| 4,460,355 Fluid pressure monitoring system | 71 | 1982 | |
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| 4,925,299 Hemoglobin detector | 40 | 1988 | |
| 5,147,613 Apparatus for sterilizing a medical unit | 20 | 1990 | |
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| 4,728,496 Apparatus and method for control and sterilization of fluid flow | 17 | 1986 | |
| 4,784,495 System for preparing a fluid intended for a medical procedure by mixing at least one concentrate in powder form with water | 94 | 1987 | |
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| 5,004,548 Method and apparatus for rinsing and priming an exchanger | 30 | 1988 | |
| 5,178,763 Method and apparatus for preparing a substitution liquid | 73 | 1991 | |
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| 4,734,269 Venous reservoir bag with integral high-efficiency bubble removal system | 107 | 1985 | |
| 5,061,236 Venous reservoir with improved inlet configuration and integral screen for bubble removal | 105 | 1990 | |
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| 5,256,371 Method and arrangement for disinfecting a dialysis fluid circuit | 28 | 1992 | |
| 5,259,961 Method and assembly for the on-line flushing and filling of an extracorporeal blood circulation system of dialysis machines | 35 | 1992 | |
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| 4,610,790 Process and system for producing sterile water and sterile aqueous solutions | 70 | 1984 | |
| 5,032,265 Method and system for producing sterile aqueous solutions | 75 | 1990 | |
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| 4,572,724 Blood filter | 84 | 1984 | |
| 4,676,771 Arterial blood filter | 49 | 1986 | |
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| 4,411,783 Arterial blood filter with improved gas venting | 73 | 1981 | |
| RE32711 Arterial blood filter with improved gas venting | 35 | 1985 | |
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| 5,392,653 Pressure transducer magnetically-coupled interface complementing minimal diaphragm movement during operation | 57 | 1993 | |
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| 5,383,249 Adjustable-type additive pressure windshield wiper | 35 | 1993 | |
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| 4,412,916 Airless artificial kidney assembly | 40 | 1981 | |
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| 4,964,984 Blood filter | 60 | 1989 | |
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| 4,220,920 Electrodeless conductivity measuring system | 44 | 1979 | |
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| 4,834,888 Hemodialysis apparatus comprising a sterile filter | 57 | 1987 | |
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| 4,784,576 Pump pressure sensor | 43 | 1987 | |
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| 5,041,215 Dialysis unit priming | 31 | 1989 | |
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| 4,844,810 Installation with multiple functions for replacement of the natural filtration of the blood | 54 | 1987 | |
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| 4,515,606 Gas separating and venting filter | 31 | 1981 | |
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| 4,517,081 Dialyzer reuse machine | 51 | 1983 | |
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| 4,596,549 Blood dialyzing method and apparatus | 9 | 1984 | |
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| 4,932,987 Extra corporeal air eliminator | 67 | 1989 | |
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| 4,758,337 Filter for filtering human blood, especially in an extracorporeal circulatory system | 45 | 1986 | |
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| 4,361,486 Filter media, method for oxidizing and removing soluble iron, method for removing and inactivating microorganisms, and particulate filter aid | 36 | 1981 | |
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| 4,545,389 Disposable physiological pressure sensing system | 41 | 1982 | |
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| 4,676,905 Fluid separation method and apparatus | 59 | 1976 | |
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| 5,114,580 Combined hemofiltration and hemodialysis system | 76 | 1990 | |
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| 4,695,385 Dialyzer reuse system | 75 | 1985 | |
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| 4,444,597 Automated cleaning method for dialyzers | 55 | 1982 | |
| 4,610,782 Hemodialysis system having a thermoinsulated container | 22 | 1984 | |
| 5,045,096 Devices for de-aerating liquids flowing in medical liquid systems | 42 | 1989 | |
| 5,336,165 Artificial kidney for frequent (daily) Hemodialysis | 69 | 1991 | |