Apparatus for performing peritoneal ultrafiltration
First Claim
1. An apparatus for ultrafiltration of a patient in need thereof, comprisinga patient tube comprising a connector for connection to a patient line for access to a fluid installed in a peritoneal cavity of the patient;
- a flow pump comprising a pressure chamber having rigid walls and a pump bag arranged inside said pressure chamber and an air pump for generating a negative pressure inside said pressure chamber for removal of fluid in an outflow from said peritoneal cavity into said pump bag, and for generating a positive pressure for introduction of fluid in an inflow from said pump bag to the peritoneal cavity;
a glucose bag, comprising concentrated glucose solution and a glucose tube connected to said patient tube;
a glucose pump arranged in said glucose tube for addition of concentrated glucose from said glucose bag into said outflow of fluid by said flow pump;
whereby the glucose is diluted and replenished intermittently.
1 Assignment
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Accused Products
Abstract
An apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a tube set including a connector for connection to a patient line for access to the peritoneal cavity of the patient. A flow pump is arranged for addition and removal outflow and inflow (recirculation) of fluid from/to the peritoneal cavity. An osmotic agent peristaltic pump is arranged for replenishment of glucose solution to the fluid added to the peritoneal cavity for promoting ultrafiltration. The glucose is replenished intermittently for keeping a concentration of glucose substantially constant in the peritoneal cavity. The flow pump comprises a pressure chamber with rigid walls and a flexible pump bag arranged therein. An air pump pressurizes the chamber for outflow of fluid from the peritoneal cavity by a sub pressure and inflow of fluid to the peritoneal cavity by an overpressure, which pressures are maintained within safe limits.
15 Citations
10 Claims
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1. An apparatus for ultrafiltration of a patient in need thereof, comprising
a patient tube comprising a connector for connection to a patient line for access to a fluid installed in a peritoneal cavity of the patient; -
a flow pump comprising a pressure chamber having rigid walls and a pump bag arranged inside said pressure chamber and an air pump for generating a negative pressure inside said pressure chamber for removal of fluid in an outflow from said peritoneal cavity into said pump bag, and for generating a positive pressure for introduction of fluid in an inflow from said pump bag to the peritoneal cavity; a glucose bag, comprising concentrated glucose solution and a glucose tube connected to said patient tube; a glucose pump arranged in said glucose tube for addition of concentrated glucose from said glucose bag into said outflow of fluid by said flow pump; whereby the glucose is diluted and replenished intermittently. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification