CASSETTE SYSTEM INTEGRATED APPARATUS

• US 20120106289A1
• Filed: 10/24/2011
• Published: 05/03/2012
• Est. Priority Date: 02/27/2007
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Wilt, Michael J., Grant, Kevin L., Dale, James D., Demers, Jason A., Tracey, Brian
• Granted Patent: US 8,499,780 B2
• Time in Patent Office: Days
• US Class Current: 366/162.1
• CPC Class Codes: A61M 1/14 Dialysis systems; Artificial kidneys; Blood oxygenators semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 1/153 the cassette being adapted for heating or cooling the treating fluid, e.g. the dialysate or the treating gas
• CPC Class Codes: A61M 1/154 with sensing means or components thereof
• CPC Class Codes: A61M 1/155 with treatment-fluid pumping means or components thereof
• CPC Class Codes: A61M 1/15625 the reservoirs acting as balance chambers
• CPC Class Codes: A61M 1/1563 Details of incorporated filters
• CPC Class Codes: A61M 1/1565 Details of valves
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 1/1601 Control or regulation
• CPC Class Codes: A61M 1/1639 linked by membranes
• CPC Class Codes: A61M 1/1656 Apparatus for preparing dialysates
• CPC Class Codes: A61M 1/1658 Degasification
• CPC Class Codes: A61M 1/166 Heating for sterilisation A61M1/1686
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/3324 PH measuring means
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/268 the displacement member being flexible, e.g. membranes, diaphragms or bladders
• CPC Class Codes: A61M 60/37 : Haemodialysis, haemofiltration or diafiltration
• CPC Class Codes: A61M 60/427 : the force acting on the blood contacting member being hydraulic or pneumatic
• CPC Class Codes: A61M 60/43 : using vacuum at the blood pump, e.g. to accelerate filling
• CPC Class Codes: A61M 60/523 : using blood flow data, e.g. from blood flow transducers
• CPC Class Codes: A61M 60/546 : of blood flow, e.g. by adapting rotor speed
• CPC Class Codes: A61M 60/847 : arranged in a cassette
• CPC Class Codes: A61M 60/851 : Valves
• CPC Class Codes: F04B 13/02 : of two or more fluids at the same time
• CPC Class Codes: F04B 43/02 : having plate-like flexible members, e.g. diaphragms F04B43/14 takes precedence
• CPC Class Codes: F04B 43/06 : Pumps having fluid drive
• CPC Class Codes: F04B 43/073 : the actuating fluid being controlled by at least one valve
• CPC Class Codes: F04B 43/0733 : with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series
• CPC Class Codes: F04B 45/053 : Pumps having fluid drive
• CPC Class Codes: F04B 45/0536 : the actuating fluid being controlled by one or more valves
• CPC Class Codes: F04B 53/106 : the valve being a membrane
• CPC Class Codes: F04B 53/1062 : fixed at two or more points at its periphery
• CPC Class Codes: F04B 9/109 : having plural pumping chambers
• CPC Class Codes: F16K 99/0015 : Diaphragm or membrane valves
• CPC Class Codes: Y10T 137/0329 : Mixing of plural fluids of diverse characteristics or conditions
• CPC Class Codes: Y10T 137/2521 : Flow comparison or differential response
• CPC Class Codes: Y10T 137/2931 : Diverse fluid containing pressure systems
• CPC Class Codes: Y10T 137/7879 : Resilient material valve
• CPC Class Codes: Y10T 137/85978 : With pump
• CPC Class Codes: Y10T 137/86139 : Serial

Abstract

A cassette integrated system. The cassette integrated system includes a mixing cassette, a balancing cassette, a middle cassette fluidly connected to the mixing cassette and the balancing cassette and at least one pod. The mixing cassette is fluidly connected to the middle cassette by at least one fluid line and the middle cassette is fluidly connected to the balancing cassette by at least one fluid line. The at least one pod is connected to at least two of the cassettes wherein the pod is located in an area between the cassettes.

Claims

1. A cassette integrated system comprising:

a mixing cassette, said mixing cassette comprising;

a mixing cassette housing comprising at least one fluid inlet line and at least one fluid outlet line;

at least one reciprocating pressure displacement membrane pump fluidly connected to said housing wherein said pressure pump pumps at least one fluid from said fluid inlet line to at least one of said fluid outlet line; and

at least one mixing chamber fluidly connected to said housing, said mixing chamber fluidly connected to said fluid outlet line;

a middle cassette, said middle cassette comprising;

a middle cassette housing having at least one fluid port and at least one air vent port wherein said air vent port vents a fluid source outside said middle cassette housing; and

at least one reciprocating pressure displacement membrane pump fluidly connected to said housing wherein said pump pumps a fluid; and

a balancing cassette, said balancing cassette comprising;

a balancing cassette housing comprising at least two inlet fluid lines and at least two outlet fluid lines;

at least one balancing pod fluidly connected to said balancing cassette housing and in fluid connection with said fluid paths, whereby said balancing pod balances the flow of a first fluid and the flow of a second fluid such that the volume of said first fluid equals the volume of said second fluid and wherein said balancing pod comprising a membrane wherein said membrane forming two balancing chambers; and

at least one reciprocating pressure displacement membrane pump fluidly connected to said balancing cassette housing wherein said pressure pump pumps a fluid from said fluid inlet line to said fluid outlet line;

wherein said mixing cassette is fluidly connected to said middle cassette by at least one fluid line and wherein said middle cassette is fluidly connected to said balancing pod by at least one fluid line and whereby said reciprocating pressure displacement membrane pumps, said mixing chamber and said balancing pod are connected to said housings wherein said reciprocating pressure displacement membrane pumps, said mixing chamber and said balancing pod are located in areas between said cassettes.

2. The cassette integrated system claimed in claim 1 wherein said cassette housings comprising:

a top plate;

a midplate; and

a bottom plate.

3. The cassette integrated system claimed in claim 1 wherein said reciprocating pressure displacement pump comprising:

a curved rigid chamber wall; and

a flexible membrane attached to said rigid chamber wall, whereby said flexible membrane and said rigid chamber wall define a pumping chamber.

4. The cassette integrated system claimed in claim 1 wherein said balancing pod comprising:

a curved rigid chamber wall; and

a flexible membrane attached to said rigid chamber wall, whereby said flexible membrane and said rigid chamber wall define two balancing chambers.

5. The cassette integrated system claimed in claim 1 wherein said mixing chamber comprising a curved rigid chamber wall having at least one fluid inlet and at least one fluid outlet.

6. The cassette integrated system claimed in claim 1 wherein said mixing cassette, middle cassette and said balancing cassette further comprising at least one valve.

7. The cassette integrated system claimed in claim 6 wherein said at least one valve is a membrane valve.

8. The cassette integrated system claimed in claim 7 wherein said membrane valve is a volcano valve.

9. The cassette integrated system claimed in claim 1 wherein at least one of said fluid lines connecting said cassettes is a rigid hollow cylindrical structure.

10. The cassette integrated system claimed in claim 9 wherein at least one of said fluid lines connecting said cassettes contain a check valve within said cylindrical structure.

11. The cassette integrated system claimed in claim 1 wherein said mixing cassette further comprising at least one metering membrane pump within said mixing cassette housing, said mixing chamber fluidly connected to said fluid outlet line.

12. The cassette integrated system claimed in claim 1 wherein said balancing cassette further comprising at least one metering pump within said housing and fluidly connected to a fluid line, wherein said metering pump pumps a predetermined volume of a fluid such that said fluid bypasses the balancing chambers and wherein said metering pump is a membrane pump.

13. A cassette integrated system comprising:

a mixing cassette, said mixing cassette comprising;

a mixing cassette housing comprising at least one fluid inlet line and at least one fluid outlet line;

at least one reciprocating pressure displacement membrane pump fluidly connected to said housing wherein said pressure pump pumps at least one fluid from said fluid inlet line to at least one of said fluid outlet line; and

at least one mixing chamber fluidly connected to said housing, said mixing chamber fluidly connected to said fluid outlet line;

a plurality of membrane valves;

a plurality of fluid lines whereby said valves control the flow of fluid in said fluid lines; and

at least one metering membrane pump within said mixing cassette housing, said mixing chamber fluidly connected to said fluid outlet line;

a middle cassette, said middle cassette comprising;

a middle cassette housing having at least one fluid port and at least one air vent port wherein said air vent port vents a fluid source outside said housing;

a plurality of fluid lines within said middle cassette housing; and

a plurality of membrane valves whereby said valves control the flow of fluid in said fluid; and

at least one reciprocating pressure displacement membrane pump fluidly connected to said housing wherein said pump pumps a fluid; and

a balancing cassette, said balancing cassette comprising;

a balancing cassette housing comprising at least one inlet fluid line and at least one outlet fluid line;

a plurality of membrane valves;

a plurality of fluid paths whereby said valves control the flow of fluid in said fluid paths;

at least one balancing pod fluidly connected to said balancing cassette housing and in fluid connection with said fluid paths, whereby said balancing pod balances the flow of a first fluid and the flow of a second fluid such that the volume of said first fluid equals the volume of said second fluid and wherein said balancing pod comprising a membrane wherein said membrane forming two balancing chambers;

at least one reciprocating pressure displacement membrane pump fluidly connected to said balancing cassette housing wherein said pressure pump pumps a fluid from said fluid inlet line to said fluid outlet line; and

at least one metering pump within said housing and fluidly connected to a fluid line, wherein said metering pump pumps a predetermined volume of a fluid such that said fluid bypasses the balancing chambers and wherein said metering pump is a membrane pump, wherein said mixing cassette is fluidly connected to said middle cassette by at least one fluid line and wherein said middle cassette is fluidly connected to said balancing pod by at least one fluid line and whereby said reciprocating pressure displacement membrane pumps, said mixing chamber and said balancing pod are connected to said housings wherein said reciprocating pressure displacement membrane pumps, said mixing chamber and said balancing pod are located in areas between said cassettes.

14. The cassette integrated system claimed in claim 13 wherein at least one of said fluid lines connecting said cassettes is a rigid hollow cylindrical structure.