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1. WO1999030757 - ACTIVE BLOOD FILTER

Publication Number WO/1999/030757
Publication Date 24.06.1999
International Application No. PCT/US1998/025277
International Filing Date 25.11.1998
Chapter 2 Demand Filed 06.07.1999
IPC
A61M 1/36 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
36Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation
B07C 5/342 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
5Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
34Sorting according to other particular properties
342according to optical properties, e.g. colour
B07C 5/36 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
5Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
36Sorting apparatus characterised by the means used for distribution
G01N 33/49 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
48Biological material, e.g. blood, urine; Haemocytometers
483Physical analysis of biological material
487of liquid biological material
49blood
CPC
A61M 1/36
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
36Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; ; Extra-corporeal blood circuits
A61M 1/3626
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
36Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; ; Extra-corporeal blood circuits
3621Extra-corporeal blood circuits
3626Gas bubble detectors
A61M 2206/16
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
2206Characteristics of a physical parameter; associated device therefor
10Flow characteristics
16Rotating swirling helical flow, e.g. by tangential inflows
B07C 5/342
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
5Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
34Sorting according to other particular properties
342according to optical properties, e.g. colour
B07C 5/36
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
5Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
36Sorting apparatus characterised by the means used for distribution
G01N 33/491
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
483Physical analysis of biological material
487of liquid biological material
49Blood
491by separating the blood components
Applicants
  • EDWARDS LIFESCIENCES CORPORATION [US]/[US]
Inventors
  • FUMIYAMA, Hideo
Agents
  • CONDINO, Debra, D.
Priority Data
08/989,31612.12.1997US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) ACTIVE BLOOD FILTER
(FR) HEMOFILTRE ACTIF
Abstract
(EN) A blood filter which actively removes unwanted particles from the blood without using passive elements such as a cartridge. The blood filter includes a housing having a blood inlet area (21) for receiving blood to be filtered, a blood outlet area (23) for providing filtered blood to a patient, and a blood return area (25) for returning blood having unwanted particles to a reservoir. A plurality of independent blood paths (40) extend from this inlet area to the outlet area of the housing for separate flows of blood therethrough. An array of detectors (42) is placed adjacent the exterior of each blood path for detecting unwanted particles in the blood flowing therethrough. An array of valves (44) is placed in operable relationship with the blood paths to close selected ones of the blood paths when unwanted particles are detected. Blood return conduits (46) open to divert the particle-containing blood to a reservoir. Several arrays of detectors and valve combinations may be provided for redundancy. A feedback and control circuit monitors the number of closed blood paths and sends control or alarm signals when the outlet blood flow reduces below a predetermined minimum. A spiral-shaped inlet manifold distributes the incoming blood into different regions corresponding to mass to help improve the efficiency of the filter.
(FR) Un hémofiltre élimine activement les particules indésirables du sang sans utiliser d'éléments passifs tels qu'une cartouche. L'hémofiltre comprend un logement présentant une région (21) d'entrée du sang destinée à recevoir le sang à filtrer, une région (23) de sortie du sang destinée à fournir du sang filtré à un patient, et une région (25) de retour du sang destinée à renvoyer le sang chargé de particules indésirables dans un réservoir. Une pluralité de voies (40) de sang indépendantes s'étendent à partir de cette région d'entrée jusqu'à la région de sortie du logement pour les flux séparés de sang dans celui-ci. Un réseau de détecteurs (42) est placé près de l'extérieur de chaque voie de sang afin de détecter les particules indésirables dans le sang s'écoulant dans celui-ci. Un réseau de soupapes (44) est placé en relation fonctionnelle avec les voies de sang afin de fermer certaines des voies de sang lorsque des particules indésirables sont détectées. Des conduits (46) de retour du sang s'ouvrent pour dévier le sang chargé de particules vers un réservoir. Plusieurs réseaux de détecteurs et des combinaisons de soupapes peuvent être prévus avec redondance. Un circuit de retour et de commande contrôle le nombre des voies de sang fermées et envoie des signaux de commande ou d'alarme lorsque le flux de sang de sortie passe au-dessous d'un minimum prédéterminé. Un collecteur d'admission spiralé répartit le sang entrant dans différentes régions correspondant à la masse afin de contribuer à améliorer l'efficacité du filtre.
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