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1. (WO2019007992) PUMPING SYSTEM, DIALYSIS MACHINE, AND METHOD FOR OPERATING A PUMPING SYSTEM
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Pub. No.: WO/2019/007992 International Application No.: PCT/EP2018/068005
Publication Date: 10.01.2019 International Filing Date: 03.07.2018
IPC:
A61M 1/14 (2006.01) ,F04B 43/067 (2006.01) ,F04B 49/12 (2006.01) ,F04B 49/14 (2006.01) ,F04B 49/16 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
DEVICES 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
1
Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
14
Dialysis systems; Artificial kidneys; Blood oxygenators
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
43
Machines, pumps, or pumping installations having flexible working members
02
having plate-like flexible members, e.g. diaphragms
06
Pumps having fluid drive
067
the fluid being actuated directly by a piston
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
12
by varying the length of stroke of the working members
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
12
by varying the length of stroke of the working members
14
Adjusting abutments located in the path of reciprocation
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49
Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
16
by adjusting the capacity of dead spaces of working chambers
Applicants:
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH [DE/DE]; Else-Kröner-Str. 1 61352 Bad Homburg, DE
Inventors:
HEDMANN, Frank; DE
SEBESTA, Sven; DE
HOCHREIN, Torsten; DE
Agent:
HERRMANN, UWE / LORENZ SEIDLER GOSSEL; Widenmayerstr. 23 80538 München, DE
Priority Data:
10 2017 114 895.704.07.2017DE
Title (EN) PUMPING SYSTEM, DIALYSIS MACHINE, AND METHOD FOR OPERATING A PUMPING SYSTEM
(FR) SYSTÈME DE POMPAGE, APPAREIL DE DIALYSE ET PROCÉDÉ POUR FAIRE FONCTIONNER UN SYSTÈME DE POMPAGE
(DE) PUMPSYSTEM, DIALYSEGERÄT UND VERFAHREN ZUM BETRIEB EINES PUMPSYSTEMS
Abstract:
(EN) The invention relates to a pumping system for producing a volume flow of dialysis solution in a dialysis machine, the pumping system comprising at least one piston pump, the piston of which co-operates with a working fluid which in turn exerts a force on a conveyor means, in particular a membrane. Adjustment means are provided, by which the conveying volume of the piston pump per piston stroke can be reduced. The adjustment means comprise a mechanical piston stop, which can be varied in position, for reducing the piston stroke and/or means for reducing the amount of the working medium and/or means for reducing the volume of the conveying chamber which co-operates with the conveying means and contains the dialysis solution to be conveyed.
(FR) La présente invention concerne un système de pompage destiné à générer un débit volumique de solution de dialyse dans une machine de dialyse. Selon l'invention, le système de pompage comprend au moins une pompe à piston dont le piston coopère avec un fluide de travail, qui à son tour exerce une force sur un moyen de convoyage, en particulier sur une membrane, des moyens de réglage sont prévus pour réduire le débit volumique de la pompe à piston par course de piston, les moyens de réglage sont munis d'une butée de piston mécanique à position variable destinée à réduire la course de piston et/ou de moyens destinés à réduire la quantité de fluide de travail et/ou des moyens destinés à réduire le volume de la chambre de convoyage qui coopère avec le moyen de convoyage et contient la solution de dialyse à transporter.
(DE) Die vorliegende Erfindung betrifft ein Pumpsystem zur Erzeugung eines Volumenstromes von Dialyselösung in einer Dialysemaschine, wobei das Pumpsystem wenigstens eine Kolbenpumpe umfasst, deren Kolben mit einem Arbeitsfluid zusammenwirkt, das seinerseits eine Kraft auf ein Fördermittel, insbesondere auf eine Membran ausübt, wobei Einstellmittel vorgesehen sind, durch die das Fördervolumen der Kolbenpumpe pro Kolbenhub verringerbar ist, wobei die Einstellmittel einen positionsveränderlichen mechanischen Kolbenanschlag zur Verringerung des Kolbenhubs und/oder Mittel zur Verringerung der Menge des Arbeitsfluids und/oder Mittel zur Verringerung des Volumens der Förderkammer, die mit dem Fördermittel zusammenwirkt und die zu fördernde Dialyselösung enthalt, umfassen.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)