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1. US5849179 - Automatic apparatus for obtaining equilibration samples of dialysate

Office États-Unis d'Amérique
Numéro de la demande 08650414
Date de la demande 20.05.1996
Numéro de publication 5849179
Date de publication 15.12.1998
Numéro de délivrance 5849179
Date de délivrance 15.12.1998
Type de publication A
CIB
B01D 61/32
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
01PROCÉDÉS OU APPAREILS PHYSIQUES OU CHIMIQUES EN GÉNÉRAL
DSÉPARATION
61Procédés de séparation utilisant des membranes semi-perméables, p.ex. dialyse, osmose ou ultrafiltration; Appareils, accessoires ou opérations auxiliaires, spécialement adaptés à cet effet
24Dialyse
32Commande ou régulation
B01D 61/30
BTECHNIQUES INDUSTRIELLES; TRANSPORTS
01PROCÉDÉS OU APPAREILS PHYSIQUES OU CHIMIQUES EN GÉNÉRAL
DSÉPARATION
61Procédés de séparation utilisant des membranes semi-perméables, p.ex. dialyse, osmose ou ultrafiltration; Appareils, accessoires ou opérations auxiliaires, spécialement adaptés à cet effet
24Dialyse
30Accessoires; Opérations auxiliaires
A61M 1/16
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
MDISPOSITIFS POUR INTRODUIRE DES AGENTS DANS LE CORPS OU LES DÉPOSER SUR CELUI-CI; DISPOSITIFS POUR FAIRE CIRCULER DES AGENTS DANS LE CORPS OU POUR LES EN RETIRER; DISPOSITIFS POUR PROVOQUER LE SOMMEIL OU LA LÉTHARGIE OU POUR Y METTRE FIN
1Dispositifs de succion ou de pompage à usage médical; Dispositifs pour retirer, traiter ou transporter les liquides du corps; Systèmes de drainage
14Systèmes de dialyse; Reins artificiels; Oxygénateurs du sang
16avec membranes
A61M 1/36
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
MDISPOSITIFS POUR INTRODUIRE DES AGENTS DANS LE CORPS OU LES DÉPOSER SUR CELUI-CI; DISPOSITIFS POUR FAIRE CIRCULER DES AGENTS DANS LE CORPS OU POUR LES EN RETIRER; DISPOSITIFS POUR PROVOQUER LE SOMMEIL OU LA LÉTHARGIE OU POUR Y METTRE FIN
1Dispositifs de succion ou de pompage à usage médical; Dispositifs pour retirer, traiter ou transporter les liquides du corps; Systèmes de drainage
36Autre traitement du sang dans une dérivation du système circulatoire naturel, p.ex. adaptation de la température, irradiation
CPC
A61M 1/16
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
14Dialysis systems; Artificial kidneys; Blood oxygenators; ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris
16with membranes
A61M 1/1605
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
14Dialysis systems; Artificial kidneys; Blood oxygenators; ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris
16with membranes
1601Control or regulation
1603Regulation parameters
1605Physical characteristics of the dialysate fluid
A61M 1/1609
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
14Dialysis systems; Artificial kidneys; Blood oxygenators; ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris
16with membranes
1601Control or regulation
1603Regulation parameters
1605Physical characteristics of the dialysate fluid
1609after use
A61M 1/1613
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
14Dialysis systems; Artificial kidneys; Blood oxygenators; ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris
16with membranes
1601Control or regulation
1613Profiling or modelling
A61M 1/1615
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
14Dialysis systems; Artificial kidneys; Blood oxygenators; ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris
16with membranes
1601Control or regulation
1615using measurements made at different flow rates
A61M 1/1619
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
14Dialysis systems; Artificial kidneys; Blood oxygenators; ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for haemofiltration, pheris
16with membranes
1601Control or regulation
1619Sampled collection of used dialysate, i.e. obviating the need for recovery of whole dialysate quantity for post-dialysis analysis
Déposants Baxter International Inc.
Inventeurs Emerson Paul
Keshaviah Prakash
Luhring David A.
Mandataires Borecki Thomas S.
Mattenson Charles R.
Cortina A. Jose
Données relatives à la priorité 07959922 13.10.1992 US
08239936 09.05.1994 US
Titre
(EN) Automatic apparatus for obtaining equilibration samples of dialysate
Abrégé
(EN)

An improved on-line, real time hemodialysis monitoring system for hemodialysis treatment, quantitates the rate and amount of a constituent, such as urea, removed during the hemodialysis treating by measuring the constituent concentrations as a function of time in the spent dialysate effluent from a hemodialysis machine. A quantity of the spent dialysate effluent is removed from the dialysate effluent waste line periodically for testing. A urea concentration time profile can be analyzed to determine the urea removal, KT/V, URR, SRI, and normalized protein catabolic rate (nPCR) indices. The hemodialysis monitoring system preferably can obtain a dialysate sample equilibrated with the blood prior to the start of a hemodialysis treatment. In a further aspect of the hemodialysis monitoring system includes a device for conducting two-pool analysis for taking into account the constituent concentration differences in the extracellular and intracellular spaces in the hemodialysis patient during the hemodialysis treatment to determine the intercompartmental transfer coefficient K.sub.I of a patient, which allows more precise adjustment of the hemodialysis prescription for the patient.