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Class 604/6.09 - Filter means


Subclass of Class 604 - Surgery
Definition: Subject matter comprising passing the blood through a
No. of patents: 386
Last issue date: 05/29/2012


                  10  
NumberTitleIssue Date
4568330Cardioplegia delivery system with improved bubble trap
A cardioplegia system in which cardioplegia medication or a mixture of arterial blood and medication is delivered to the heart of a patient undergoing open heart surgery, which includes a bubble trap in conjunction with the delivery system. The bubble tra...
02/04/1986
4564359Autotransfusion apparatus
An autotransfusion apparatus for blood or a similar body fluid, comprising (a) an evacuatable vacuum-resistant container (5) having a bottom part (4) and a cover part (3), with (a1) an inlet opening (20) for the body fluid arranged in the cover part, (a2) an outlet...
01/14/1986
4559034Line for use in body fluid treatment
A method for treating blood uses a tubular body fluid passageway member at least part of which is made of a flexible material, an outer tubular member which is made of a nonflexible material and contains said tubular body fluid passageway member hermetica...
12/17/1985
4529397Cardioplegic controlling and regulating system
A cardioplegic controlling and regulating device for the dosed perfusion of cardioplegic perfusion solution in open-heart surgery has a storage container for receiving the cardioplegic solution, which container is part of a scale and can be connected to t...
07/16/1985
4526569Portable device for infusing insulin on the basis of glycemic measurements
The invention relates to a device made by a concentric dual lumen catheter, a pump, a small hemofilter, a glucose sensor which, by means of a microinfusion pump with a stepping motor controlled by a microprocessor can, through another concentric dual lume...
07/02/1985
4517090Low volume, large area filters for IV or blood filtration
There is disclosed herein a flow-through medical filter element which includes surface or depth filter media and a frame-like structure for supporting and positioning the media. The frame-like structure is a molded member which includes a ring-like inlet,...
05/14/1985
4512763Method and apparatus for selective removal of constituents of blood
A method for removing a constituent such as immunoglobulins, lymphocytes, or immune complexes from a component of a patient's blood comprises the steps of: removing blood from the patient; separating the constituent containing component from the rest of t...
04/23/1985
4493693Trans-membrane pressure monitoring system
A monitoring system for monitoring trans-membrane pressure in plasmapheresis apparatus utilizing a microporous membrane type filter includes first and second pressure-to-frequency transducer circuits for developing signals frequency-indicative of the inle...
01/15/1985
4453927Method and apparatus for microfiltration of blood
A microfilter and method for infusion of blood and blood components into premature or neonatal infants designed to be utilized as an interruption filter between the syringe carrying the blood to be transfused and the needle injected into the vein of the p...
06/12/1984
4445884Air purge unit for auto transfusion apparatus
An air purge unit for an auto transfusion device is provided wherein a housing having a passageway therein is mounted on the top wall of a blood collection chamber. A filter having pore sizes smaller than the size of red blood cells is disposed within sai...
05/01/1984
4411792Lymph filtration system
A lymphapheresis or lymph filtration system is disclosed for removing lymph from a patient, separating the lymph into a liquid fraction and a cellular component fraction and returning the liquid fraction to the patient. The system includes an input pump t...
10/25/1983
4381775Method for low pressure filtration of plasma from blood
A method for carrying out separation of plasma from whole blood, in which whole blood is passed through a filtration membrane means of a material suitable for separating plasma from whole blood and having a pore size from 0.1 to 0.6 microns at positive pr...
05/03/1983
4350156Method and apparatus for on-line filtration removal of macromolecules from a physiological fluid
An on-line filtration system for the removal of macromolecules greater than 70,000 mol. wt. from a physiological solution, such as blood, in the therapeutic treatment of various disease states. For blood, the plasma (which contains the macromolecules) is ...
09/21/1982
4303068Method and apparatus for single pass hemodialysis with high flux membranes and controlled ultrafiltration
Disclosed is a method of hemodialysis and a modification for existing hemodialyzers to facilitate use of the method. A highly porous membrane is utilized in a single pass hemodialysis system. The membrane is freely supported, such that it distends in use ...
12/01/1981
4300551Method for treating schizophrenia
A method for treating schizophrenia in human patients by hemoperfusion using hemoperfusion of the patient's blood through a charcoal cartridge in a manner for selective removal of molecules is disclosed. The method may use known hemoperfusion cartridges f...
11/17/1981
4284502Apparatus for treating uremic patients
An apparatus for treating uremic patients by means of ultrafiltration, in which the withdrawn blood is separated by means of a hemofilter into plasma water and residual blood and the plasma water is exchanged in an exchange device. The latter comprises tw...
08/18/1981
4241187Method and apparatus for cell and tissue culture
A method and apparatus for culturing biological cells and tissues in high density are disclosed, employing perfused blood as the nutrient source. The cells or tissues are separated from the perfused blood by means of a microporous membrane which is mainta...
12/23/1980
4235231Portable artificial kidney
A portable artificial kidney designed for continuous use includes a catheter with filter properties. The body portion of the catheter has an infusion duct which opens into the surface of the catheter and is provided with surface channels which are covered...
11/25/1980
4204957Artificial kidney
An artificial kidney comprising a filter which is disposed between an artery connection and a vein connection, a collecting means for the filtrate to be discharged from the filter, a means for providing a metered supply of substituate to the purified bloo...
05/27/1980
4071444Portable chemical reactor for use as an artificial kidney
A small, portable, chemical reactor adapted to tap the venous blood supply of a patient, said device including a stack of semi-permeable membranes blood and dialysis materials in alternate chambers, said stack being held in sealed relationship by a single...
01/31/1978
4048064Biocompatible hemoperfusion system
A biocompatible hemoperfusion system employing a polymer-coated detoxicant composition comprising a solid detoxicant having a semipermeable polymer coating which substantially retains free heparin is disclosed. The semipermeable polymer coating has an eff...
09/13/1977
4033345Autologous transfusion filter system and method
An autologous blood transfusion system having at least two interconnected blood receptacles and an associated filter assembly, the first receptacle being evacuated and connected to a suction device for aspirating blood. The second receptacle takes blood f...
07/05/1977
4014329Method and apparatus for autotransfusion of blood
A method and device is provided for autotransfusion of blood during surgery. The shed blood is retrieved from the surgical field via a receiving vessel located within a vacuum chamber and under less vacuum than the vacuum applied to the chamber. The vacuu...
03/29/1977
3994799Blood and tissue detoxification apparatus
Method and apparatus for blood and tissue detoxification by oxidation of excess undesirable or toxic substances such as ammonia, urea, creatinine, alanine, carbon monoxide, drug overdoses, uric acid, actone, aceto acetate and ethanol in an electrochemical...
11/30/1976
3993067Autotransfusion device
An autotransfusion set includes a housing having a blood filtering and defoaming chamber connected to receive blood from a patient, and a blood reservoir connected to receive blood from the chamber and having an outlet for returning the blood to the patie...
11/23/1976
3964479Extracorporeal blood circulation system and drip chamber with adjustable blood level
In accordance with the invention there is provided an extracorporeal blood circulation system including a drip chamber having a blood inlet in its top and a blood outlet in its bottom, such chamber during operation containing blood in its bottom portion a...
06/22/1976
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