Method and apparatus for a hemodiafiltration delivery module
First Claim
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1. In a blood dialysis system including a dialysis machine and an extracorporeal circuit, a diafiltration module adapted to be connected to at least one of the dialysis machine and the extracorporeal circuit, the diafiltration module comprising:
- a first conduit having a first end and an opposing second end, the first end for receiving a first fluid from the dialysis machine and the second end for discharging a dialysate fluid to the dialysis machine;
a second conduit in selective communication with the first conduit such that the second conduit selectively receives a diverted amount of the first fluid from the first conduit, the second conduit communicating with at least one sterilizing filter for filtering the diverted amount of the first fluid to produce a substitution fluid, wherein one end of the second conduit is configured to deliver the substitution fluid to the extracorporeal circuit; and
a control unit responsive to at least one of (a) a first detected characteristic of one of the first fluid and the dialysate fluid and (b) a second detected characteristic of blood within the extracorporeal circuit, the control unit being configured to prevent flow of the substitution fluid to the extracorporeal circuit when at least one of the first and second characteristics meets a prescribed criteria.
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Abstract
This invention provides a method and apparatus for a hemodiafiltration delivery module that is used in conjunction with a UF controlled dialysis machine to enable hemodiafiltration therapy to be performed. The advantage is that one can fully utilize a current functioning dialysis machine to perform a hemodiafiltration therapy as opposed to purchasing a completely new machine that offers this capability.
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46 Claims
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1. In a blood dialysis system including a dialysis machine and an extracorporeal circuit, a diafiltration module adapted to be connected to at least one of the dialysis machine and the extracorporeal circuit, the diafiltration module comprising:
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a first conduit having a first end and an opposing second end, the first end for receiving a first fluid from the dialysis machine and the second end for discharging a dialysate fluid to the dialysis machine;
a second conduit in selective communication with the first conduit such that the second conduit selectively receives a diverted amount of the first fluid from the first conduit, the second conduit communicating with at least one sterilizing filter for filtering the diverted amount of the first fluid to produce a substitution fluid, wherein one end of the second conduit is configured to deliver the substitution fluid to the extracorporeal circuit; and
a control unit responsive to at least one of (a) a first detected characteristic of one of the first fluid and the dialysate fluid and (b) a second detected characteristic of blood within the extracorporeal circuit, the control unit being configured to prevent flow of the substitution fluid to the extracorporeal circuit when at least one of the first and second characteristics meets a prescribed criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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37. In a blood dialysis system including a dialysis machine that includes a source of dialysate fluid and an extracorporeal circuit, a method of preventing flow of substitution fluid to the extracorporeal circuit comprising the steps of:
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providing a diafiltration module including a first conduit having a first end and a second end for carrying dialysate fluid and a second conduit in selective communication with the first conduit such that the second conduit selectively receives a diverted amount of the dialysate fluid, the diafiltration module further including at least one sterilizing filter in fluid communication with the second conduit for filtering the diverted dialysate fluid to produce the substitution fluid;
fluidly connecting the first end of the first conduit to the dialysis machine so that the dialysate fluid flows from the source to the first conduit;
fluidly connecting the second conduit to the extracorporeal circuit such that the substitution fluid is delivered and introduced into the extracoporeal circuit;
providing a control unit;
detecting a first characteristic of the dialysate fluid flowing within one of the first conduit and second conduit and detecting a second characteristic of the blood flowing within the extracorporeal circuit; and
inputting the detected first and second characteristics to the control unit, wherein the control unit is configured to prevent the flow and introduction of the substitution fluid into the extracorporeal circuit when at least one of the first and second characteristics meets a prescribed criteria.
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Specification