Systems and methods for performing peritoneal dialysis

US7867214B2 · kind B2 · utility

Assignees

• Baxter International Inc. · US
• Baxter Healthcare SA · CH

Inventors

• Robert W. Childers · Holiday, US
• David S. Brown · Auburn, US
• Ramesh Wariar · Tampa, US
• Sujatha Karoor · Lake Forest, US
• Shahid Din · Palm Harbor, US
• Leo Martis · Long Grove, US
• Cody Buchmann · Columbus, US
• Paul Soltys · Holmdel, US

Key dates

• Filing date: Jul 17, 2003
• Grant date: Jan 11, 2011
• Expiry date: Oct 19, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/3327
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a peritoneal dialysis embodiment of the present invention, spent dialysate from the patient's peritoneal cavity passes, along a patient loop, through a dialyzer having a membrane that separates waste components from the spent dialysate, wherein the patient loop returns fresh dialysate to the patient's peritoneal cavity. The waste components are carried away in a second regeneration loop to a regeneration unit or sorbent cartridge, which absorbs the waste components. The regeneration unit removes undesirable components in the dialysate that were removed from the patient loop by the dialyzer, for example, excess water (ultrafiltrate or UF), toxins and metabolic wastes. Desirable components can be added to the dialysate by the system, such as glucose and electrolytes. The additives assist in maintaining the proper osmotic gradients in the patient to perform dialysis and provide the necessary compounds to the patient.