Hemofiltration systems and methods that maintain sterile extracorporeal processing conditions
First Claim
1. A disposable fluid circuit kit for use in extracorporeal blood treatment systems that supply replacement fluid to a patient, comprising:
- a fluid circuit having a blood portion for carrying blood, a filtrate portion connectable across a porous membrane to said blood portion, and a replacement fluid portion connectable to a supply of replacement fluid;
a sterilizing filter in said replacement fluid portion, said sterilizing filter having a pore size effective to eliminate pyrogens from a fluid passing therethrough.
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0 Petitions
Accused Products
Abstract
A disposable fluid circuit kit for extracorporeal blood treatment systems that supply replacement fluid to a patient is described. The circuit has a blood portion that carries blood and subjects it to some treatment, such as dialysis or hemofiltration. A portion carries filtrate or dialysate. A replacement fluid portion that carries fluid used to compensate for fluid loss is connectable to a supply of replacement fluid. a sterilizing filter in the replacement fluid portion sterilizes the replacement fluid before introduction into the patient acting as a guard against touch contamination of the connected replacement fluid container. Preferably, the filter has a pore size effective to eliminate pyrogens.
152 Citations
25 Claims
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1. A disposable fluid circuit kit for use in extracorporeal blood treatment systems that supply replacement fluid to a patient, comprising:
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a fluid circuit having a blood portion for carrying blood, a filtrate portion connectable across a porous membrane to said blood portion, and a replacement fluid portion connectable to a supply of replacement fluid;
a sterilizing filter in said replacement fluid portion, said sterilizing filter having a pore size effective to eliminate pyrogens from a fluid passing therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A disposable fluid circuit kit for use in extracorporeal blood treatment systems that supply replacement fluid to a patient, comprising:
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a fluid circuit mounted in a cartridge;
said fluid circuit including a blood circuit portion connected to a filter, a replacement fluid circuit portion connected to said blood circuit portion, and a waste circuit portion connected to said filter;
a sterilizing filter in said replacement fluid portion, said sterilizing filter having a pore size effective to eliminate pyrogens from a fluid passing therethrough;
said sterilizing filter being located in an in-line configuration such that all replacement fluid passing into said blood circuit portion must pass through a membrane thereof. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A disposable fluid circuit kit for use in extracorporeal blood treatment systems that supply replacement fluid to a patient, comprising:
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a fluid circuit with a support;
said fluid circuit including arterial and venous blood lines connectable to a patient access at access ends thereof and connectable to a filter at filter ends thereof;
said fluid circuit including a replacement fluid line with an input end connectable to a replacement fluid supply and an output end connected to said venous blood line;
said replacement fluid line having an inline sterile filter between said input and output ends configured such that all fluid passing from said input end to said output end passes through a membrane effective to block pyrogens. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification