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US 12,433,980 B2Granted
Optimising dialyser performance
AssigneeQuanta Dialysis Technologies Limited
InventorsClive Buckberry, Mark Wallace
Life of this patent
Estimating the term…
Abstract
A pump and valve arrangement (201), a dialysis system (10) comprising the pump and valve arrangement 201 and a method of operating a pump and valve arrangement (201). The pump and valve arrangement (201) has a dialyser having a semi-permeable membrane. The pump and valve arrangement (201) delivers dialysis fluid to and from the dialyser (12). The pump and valve arrangement (201) has a control system (450) configured to shuttle dialysis fluid between an inlet pump assembly and the dialyser (12) one or more times so as to agitate the surface of the semi-permeable membrane of the dialyser (12).
Claims12
A dialysis system comprising:
- a dialyser including a semi-permeable membrane;
- an inlet pump assembly operable to deliver a first volume of dialysis fluid from a dialysis fluid source to the dialyser in an inlet pump cycle having a dialysis fluid delivery stroke;
- an outlet pump assembly operable to remove a second volume of dialysis fluid from the dialyser and deliver the second volume of dialysis fluid away from the dialyser in an outlet pump cycle having a dialysis fluid removal stroke;
- and
- a control system configured to operate the inlet pump assembly in a plurality of instances of the inlet pump cycle, and operate the outlet pump assembly in a plurality of instances of the outlet pump cycle, wherein each instance of the inlet pump cycle includes a corresponding instance of the outlet pump cycle, wherein:
- the control system is further configured to operate the inlet pump assembly to shuttle the respective first volume of dialysis fluid of one of the plurality of instances of the inlet pump cycle between the inlet pump assembly and the dialyser one or more times to agitate a surface of the semi-permeable membrane of the dialyser or
- to operate the outlet pump assembly to shuttle the respective second volume of dialysis fluid of one of the plurality of instances of the outlet pump cycle between the outlet pump assembly and the dialyser one or more times to agitate a surface of the semi-permeable membrane of the dialyser, and
- the control system is further configured to synchronise the inlet pump assembly and outlet pump assembly to shuttle the first volume of dialysis fluid between the inlet pump assembly and the outlet pump assembly via the dialyser one or more times.
5 more elements
A dialysis system comprising:
- a dialyser including a semi-permeable membrane;
- an inlet pump assembly operable to deliver a first volume of dialysis fluid from a dialysis fluid source to the dialyser in an inlet pump cycle having a dialysis fluid delivery stroke;
- an outlet pump assembly operable to remove a second volume of dialysis fluid from the dialyser and deliver the second volume of dialysis fluid away from the dialyser in an outlet pump cycle having a dialysis fluid removal stroke;
- and
- a control system configured to operate the inlet pump assembly in a plurality of instances of the inlet pump cycle, and operate the outlet pump assembly in a plurality of instances of the outlet pump cycle, wherein each instance of the inlet pump cycle includes a corresponding instance of the outlet pump cycle, wherein:
- the control system is further configured to operate the inlet pump assembly to shuttle the respective first volume of dialysis fluid of one of the plurality of instances of the inlet pump cycle between the inlet pump assembly and the dialyser one or more times to agitate a surface of the semi-permeable membrane of the dialyser or
- to operate the outlet pump assembly to shuttle the respective second volume of dialysis fluid of one of the plurality of instances of the outlet pump cycle between the outlet pump assembly and the dialyser one or more times to agitate a surface of the semi-permeable membrane of the dialyser, and
- to maintain an inactive state of the other of the inlet pump assembly or the outlet pump assembly when operating the inlet pump assembly to shuttle or operating the outlet pump assembly to shuttle.
5 more elements
A dialysis system comprising:
- a dialyser including a semi-permeable membrane;
- an inlet pump assembly operable to deliver a first volume of dialysis fluid from a dialysis fluid source to the dialyser in an inlet pump cycle having a dialysis fluid delivery stroke;
- an outlet pump assembly operable to remove a second volume of dialysis fluid from the dialyser and deliver the second volume of dialysis fluid away from the dialyser in an outlet pump cycle having a dialysis fluid removal stroke;
- and
- a control system configured to operate the inlet pump assembly in a plurality of instances of the inlet pump cycle, and operate the outlet pump assembly in a plurality of instances of the outlet pump cycle, wherein each instance of the inlet pump cycle includes a corresponding instance of the outlet pump cycle, wherein:
- the control system is further configured to operate the inlet pump assembly to shuttle the respective first volume of dialysis fluid of one of the plurality of instances of the inlet pump cycle between the inlet pump assembly and the dialyser one or more times to agitate a surface of the semi-permeable membrane of the dialyser or
- to operate the outlet pump assembly to shuttle the respective second volume of dialysis fluid of one of the plurality of instances of the outlet pump cycle between the outlet pump assembly and the dialyser one or more times to agitate a surface of the semi-permeable membrane of the dialyser, and
- to synchronise the inlet pump assembly and outlet pump assembly with a delay between the beginning of each one of the plurality of instances of the inlet pump cycle and the end of each respective one of the plurality of instances of the outlet pump cycle to shuttle the respective first volume of dialysis fluid between the inlet pump assembly and the outlet pump assembly via the dialyser one or more times.
5 more elements
Dependencies are inferred from the claim text.