Back to results
US 7,410,473 B2Granted
Blood pump having a disposable blood filter with integrated pressure sensors
AssigneeCHF Solutions, Inc.
InventorsHoward R. Levin, Mark Gelfand, Steven Bernard
Life of this patent
Estimating the term…
Abstract
An integrated disposable cartridge for dialysis or ultrafiltration treatment of blood includes integral pressure sensors. Sensors are embedded in the blood filter on the cartridge to measure the pressure of blood or other fluids in the filter.
Claims20
A filter for a blood circuit comprising:
- a filter housing having a blood inlet and a blood outlet, and a filtrate outlet;
- a filter medium in the filter housing and arranged between the blood inlet and blood outlet, and
- a pressure sensor mounted to the filter housing and monitoring a pressure of blood in the filter housing, wherein the pressure sensor is embedded in the filter housing, and
- wherein the blood outlet is connectable to a blood tube downstream of the filter.
1 more element
A filter for a blood circuit comprising:
- a filter housing having a blood inlet and a blood outlet, and a filtrate outlet;
- a filter medium in the filter housing and arranged between the blood inlet and blood outlet, and
- a first pressure sensor coupled to and extending through the filter housing and monitoring a pressure of blood in the housing, and
- a second pressure sensor embedded in the filter housing and in fluid contact with a filtered fluid chamber of the filter housing.
1 more element
A filter for a blood circuit comprising:
- a filter housing having a blood inlet and a blood outlet, and a filtrate outlet;
- a filter medium in the filter housing and arranged between the blood inlet and blood outlet, and
- a pressure sensor directly coupled to and directly attached to the filter housing and monitoring a pressure of blood in the housing, wherein the pressure sensor is sealed in a pressure sensor housing formed of a biocompatible and flexible material.
A disposable extracorporeal blood circuit for processing blood from a mammal comprising:
- a blood passage having a blood withdrawal port connectable to a vascular system of the mammal, a blood return port connectable to the vascular system and a blood passage between the withdrawal port and the return port through which blood flows;
- a blood filter having a housing with a blood inlet and a blood outlet both coupled to said blood passage such that the blood flows through said filter, and
- a liquid pressure sensor attached to and directly mounted on the filter housing and monitoring a blood pressure in the housing.
A method of monitoring a fluid pressure in a disposable extracorporeal blood circuit comprising:
- withdrawing blood from a patient and into a blood passage of the blood circuit;
- filtering the blood flowing through the circuit in a filter;
- monitoring a pressure of the blood in the filter, as the blood passes through a housing for the filter by a pressure sensor at the filter and embedded in the housing of the filter, and
- returning the filtered blood to the patient.
1 more element
A filter for a blood circuit comprising:
- a filter housing having a blood inlet and a blood outlet, and a filtrate outlet;
- a filter medium in the filter housing and arranged between the blood inlet and blood outlet, and
- a pressure sensor mounted to the filter housing and monitoring a pressure of blood in the filter housing, wherein the pressure sensor is embedded in the filter housing and the sensor has a pressure sensing surface substantially flush with an inside surface of the filter housing, and
- wherein the blood outlet is connectable to a blood tube downstream of the filter.
1 more element
Dependencies are inferred from the claim text.