Extracorporeal fluid circuit and related methods
AssigneesNephros Therapeutics, Inc., The Regents of the University of Michigan
InventorsWilliam Frederick Weitzel, H. David Humes, Emil Presley Paganini, Deborah Ann Buffington, Angela J. Funke
Life of this patent
Estimating the term…
Abstract
A circuit for extracorporeal treatment of a body fluid, the circuit including in serial fluidic communication an inlet for receiving the body fluid from a patient, a first pump, a first treatment device for processing the body fluid, a second pump, an outlet for returning processed body fluid to the patient; and a shunt. The shunt is upstream from the first pump and downstream from the second pump.
Claims35
A circuit for extracorporeal treatment of a body fluid, the circuit comprising in serial fluidic communication:
- (a) an inlet for receiving the body fluid from a patient;
- (b) a first pump;
- (c) a first treatment device for processing the body fluid;
- (d) a second pump;
- (e) an outlet for returning processed body fluid to the patient;
- and
- (f) a shunt, wherein the shunt is upstream from the first pump and downstream from the second pump.
The circuit of 14 wherein the first treatment device comprises a renal assist device.
A method for treating a patient with a compromised bodily function comprising the steps of:
- (a) providing a circuit comprising in serial fluidic communication, an inlet for receiving a body fluid from the patient, a first pump, a first treatment device for processing the body fluid, a second pump, an outlet for returning processed body fluid to the patient, and a shunt, wherein the shunt is upstream from the first pump and downstream from the second pump;
- (b) removing the body fluid from the patient;
- (c) moving the body fluid through the circuit;
- and
- (d) returning processed body fluid to the patient.
A circuit for extracorporeal treatment of a body fluid, the circuit comprising:
- (a) a first section comprising in serial fluidic communication:
- (1) an inlet for receiving the body fluid from a patient;
- (2) a first treatment device for processing the body fluid;
- (3) a first pump;
- (4) an outlet for returning processed body fluid to the patient;
- and
- (5) a shunt, wherein the shunt connects the inlet with the outlet;
- and
- (b) a second section comprising in serial fluidic communication:
- (1) a first conduit for receiving an additional fluid;
- (2) a second pump;
- (3) the first treatment device for processing the additional fluid;
- and
- (4) a third pump, wherein the first treatment device includes a membrane disposed between the body fluid of the first section and the additional fluid of the second section.
A method for treating a patient with a compromised bodily function comprising the steps of:
- (a) providing a circuit comprising a first section comprising in serial fluidic communication an inlet for receiving a body fluid from the patient, a first treatment device for processing the body fluid, a first pump, an outlet for returning processed body fluid to the patient, and a shunt, wherein the shunt connects the inlet with the outlet;
- and a second section comprising in serial fluidic communication a first conduit for receiving an additional fluid, a second pump, the first treatment device for processing the additional fluid, and a third pump, wherein the first treatment device includes a membrane disposed between the body fluid of the first section and the additional fluid of the second section;
- (b) removing the body fluid from the patient;
- (c) moving the body fluid through the first section and the additional fluid through the second section;
- and
- (d) returning processed body fluid to the patient.
A method for combining two fluids in a treatment device comprising the steps of:
- (a) providing a housing containing:
- (1) a chamber having a first inlet and a first outlet and for containing a first fluid, wherein the first fluid has a first outlet flow rate at the first outlet;
- and
- (2) a plurality of conduits for containing a second fluid, each conduit comprising a membrane defining a lumen and separating the chamber from the lumen of each conduit, wherein the conduits communicate at a second inlet and a second outlet and wherein the second fluid has a second inlet flow rate at the second inlet;
- and
- (b) inducing a flow across the membranes from the lumens of the conduits to the chamber.
Dependencies are inferred from the claim text.