US3868154A - Cart for dialysis machine - Google Patents

Cart for dialysis machine Download PDF

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Publication number
US3868154A
US3868154A US404349A US40434973A US3868154A US 3868154 A US3868154 A US 3868154A US 404349 A US404349 A US 404349A US 40434973 A US40434973 A US 40434973A US 3868154 A US3868154 A US 3868154A
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Prior art keywords
tray
cart
frame
tank
rails
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Expired - Lifetime
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US404349A
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Francis X Macdonald
Paul M Macdonald
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P X IND Inc
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Px Ind Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B50/00—Containers, covers, furniture or holders specially adapted for surgical or diagnostic appliances or instruments, e.g. sterile covers
    • A61B50/10—Furniture specially adapted for surgical or diagnostic appliances or instruments

Definitions

  • ABSTRACT A cart is provided for use with a kidney dialysis machine.
  • the cart incorporates both a tank for the saline solution and a slidable tray for supporting the pump,
  • kidney dialysis machine The function of the kidney dialysis machine is to duplicate, at least in part, the functions of a healthy kidney where, because of disease or injury, the natural kidney is unable to carry out its function;which is one primarily of filtering. Normal kidneys not only perform excretion functions but also regulate the salt and water content of the body. If the kidneys fail to function properly other parts of the body are adversely affected and can result in death if not remedied.
  • the artificial kidney provides rapid correction of blood chemistry and allows the kidneys to rest or to supplant to a substantial extent the function of the natural kidney.
  • the apparatus involved in an artificial kidney is rather elaborate including a dializer which contains a membrane and rinsing liquid by which the blood is fil-' tered and oxygenated, a pumping system, a heating system and controls and oxygen supply system.
  • a dializer which contains a membrane and rinsing liquid by which the blood is fil-' tered and oxygenated
  • a pumping system a heating system and controls and oxygen supply system.
  • the apparatus has been assembled on a number of different tables, carts, portable tanks and the like with the various components being separately transferred and then interconnected at the location where the system is to be used. This arrangement has been quite unsatisfactory since it occupies a large amount of floor space and has involved a number of separate mobile parts which must be connected and disconnected after each use and movement.
  • This invention features a compact cart for a dialysis machine comprising a frame, preferably. of rectilinear construction, rollers mounted to the base of the frame for allowing free movement of the cart over a floor, a tank mounted within the frame adapted tocontain a dializing medium such as a saline solution for use with the dialysis machine and a horizontally flat sliding tray mounted to the top of the frame for supporting the top of the tank when the unit is in use and to close over the top of the tank when the unit is not inuse.
  • FIG; 1 is a view in perspective of a cart for a dialysis machine made according to the invention
  • FIG. 2 is a view similar to FIG. 1 but showing the tray in an open position
  • FIG. 3 is a detail view in side elevation thereof, and,
  • FIG. 4 is a detail sectional view showing the slide mechanism for the tray.
  • the tank 18 preferably is fabricated of a relatively rigid plastic materialand dimensioned to fit snugly within the framework.
  • the tank includes a top wall 20 substantially co-planar with the top frame members 14 and formed with a rectilinear offset opening 22 providing access to the tank through a removable or hinged cover 23.
  • the tank 18 is also provided with a drain valve 24 at the base thereof allowing the tank to be emptied when desired.
  • the frame is provided with four casters 26, one at each corner thereof, to allow free mobility of the cart in any direction permitting the cart and its equipment to be moved from room to room quickly and easily.
  • a housing 28 for electronic controls and circuits used in the operation of the dialysis machine. Knobs, dials, switches, etc., are mounted conve-' niently on the upper end of the housing 28.
  • a sliding .tray 30 adapted to support components of the dialysis machine such as a pump generally indicated by reference character 32 and a dialysis coil generally indicated by reference character 34.0ther accessory components may also be placed on the tray 30.
  • the tray 30 is generally rectangular in outline corresponding with the dimensions of the top of the frame but with a slight overhang along the sides.
  • the tray is fabricated of a plywood or pressed wood core 36 the outer surfaces of which are laminated with a plastic stratum 38 such as Formica or the like to provide a strong, rigid support for the dialysis components and a surface that is easily cleaned.
  • each of the panels is provided with a pair of spaced rollers 42 and 44 which may be of metal or a plastic such as nylon and are supported each by a shaft 46 extending through the panel with the wheel mounted on the inside end thereof.
  • a spacer 48 is provided between the inner face of the panel and the wheel and the wheel is retained on the shaft 46 by a cotter pin50 passed through a hole V formedtin the end of theshafL
  • the wheels ride on the upper frame members 14 which serve as rails and which preferably are of a hollow square cross-section:
  • a rib 52 may be fastened to the'i nner face of the panels 40 and %2 oppositely the rails 14 providing a slight clearance therewith.
  • the rib' is of a' plasticmaterial such as nylon which williallow free ion gitudinal motionof the tray and willislide freely with ⁇ respect tothe rail if'in contact with it.
  • stops 54 and 56 are provided on each of the panels140 and 42.
  • the stops typically are in thegform of L-shaped I legs attached to the lower edges of the panels and i project inwardly under the rails 14 sons to butt against the upright frame members 12 in either extreme posi' tionof the trayn
  • the stopsare mountedto allow limited I longitudinal movcrnentofthe tray with the stop 5 4' locatednear the ⁇ extreme left-hand edgeiof the panel,
  • the stops 54and56 not only serve tolimit the longitudinalmotion of the tray but also prevent the tray from'being tipped should 'the tray become unbalanced whe'niopen by reason of the weight a and position of the units 32 and 34, Since the stops errtend in under the railsfsuch tipping of the tray is pre- J yentedf 7
  • the cart provides a compact and convenient dialysis 1 station integrated within one mobile unit.
  • a cart according to claim l' including at least one, 7 low frictional boss mounted to the inner face of each I panel in opposing spaced relation to said'rails.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • Urology & Nephrology (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Emergency Medicine (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • External Artificial Organs (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A cart is provided for use with a kidney dialysis machine. The cart incorporates both a tank for the saline solution and a slidable tray for supporting the pump, filter and other associated equipment and controls therefor. The sliding tray top is mounted for limited sliding movement and in one position is centered on the top of the cart and in an operating position is shifted to one side to expose an opening in the top of the tank mounted below the tray. All operating units and controls are incorporated in the cart along with the tank.

Description

United States Patent MacDonald et al.
[4 1 Feb. 25, 1975 CART FOR DIALYSIS MACHINE [75] Inventors: Francis X. MacDonald, Canton;
Paul M. MacDonald, Scituate, both of Mass.
[73] Assignee: P. X. Industries, Inc., Rockland,
Mass.
[22] Filed: Oct. 9, 1973 [21] Appl. No.: 404,349
[52] U.S. C1. 312/250, 312/209 [51] Int. Cl. A47b 91/00, A47b 81/00 [58] Field of Search 312/228, 209, 250, 343, 312/344, 346, 347; 108/137, 143, 102
[56] References Cited UNITED STATES PATENTS 1,315,922 9/1919 Franklin 108/143 1,676,810 7/1928 Ulrich 108/102 X 1,827,687 10/1931 McCandless 108/143 2,483,920 10/1949 McLean et al 108/43 2,614,017 10/1932 Mugnier 312/250 X 2,635,255 4/1953 Holden 312/344 X-' 9/1953 Bissman 312/341 X 2,760,207 8/1956 Glinte 312/250 X 2,946,638 7/i960 COl0..... 108/143 X 3,032,057 5/1962 Mays 312/209 X 3,054,650 I 9/1962 I Norland 312/209 Primary ExaminerPaul R. Gilliam I Attorney, Agent, or Firm-Altman, Morse, Oates &
Bello [57] ABSTRACT A cart is provided for use with a kidney dialysis machine. The cart incorporates both a tank for the saline solution and a slidable tray for supporting the pump,
3 Claims, 4 Drawing Figures CART FOR DIALYSIS MACHINE BACKGROUND OF THE INVENTION l. Field of the Invention This invention relates generally to mobile medical equipment and more particularly is directed towards a new and improved cart for use with kidney dialysis machines.
2. Description of the Prior Art Artificial kidney nfic lihtes or dialyzers have reached the stage of development where they are now in common use in the hospital and, to some extent, in the home. The function of the kidney dialysis machine is to duplicate, at least in part, the functions of a healthy kidney where, because of disease or injury, the natural kidney is unable to carry out its function;which is one primarily of filtering. Normal kidneys not only perform excretion functions but also regulate the salt and water content of the body. If the kidneys fail to function properly other parts of the body are adversely affected and can result in death if not remedied. The artificial kidney provides rapid correction of blood chemistry and allows the kidneys to rest or to supplant to a substantial extent the function of the natural kidney.
The apparatus involved in an artificial kidney is rather elaborate including a dializer which contains a membrane and rinsing liquid by which the blood is fil-' tered and oxygenated, a pumping system, a heating system and controls and oxygen supply system. I-Ieretofore, the apparatus has been assembled on a number of different tables, carts, portable tanks and the like with the various components being separately transferred and then interconnected at the location where the system is to be used. This arrangement has been quite unsatisfactory since it occupies a large amount of floor space and has involved a number of separate mobile parts which must be connected and disconnected after each use and movement.
Accordingly, it is an object of the present invention to provide a new and improved cart integrating all of the components into a single mobile unit occupying a small amount of space and one that is easily portable from room to room. Another object of this invention is to provide a compact, integrated cart for a dialysis machine that is easy and convenient to useandquickly' cleaned after each use.
SUMMARY OF THE INVENTION This invention features a compact cart for a dialysis machine comprising a frame, preferably. of rectilinear construction, rollers mounted to the base of the frame for allowing free movement of the cart over a floor, a tank mounted within the frame adapted tocontain a dializing medium such as a saline solution for use with the dialysis machine and a horizontally flat sliding tray mounted to the top of the frame for supporting the top of the tank when the unit is in use and to close over the top of the tank when the unit is not inuse.
BRIEF DESCRIPTION OF THE DRAWINGS FIG; 1 is a view in perspective of a cart for a dialysis machine made according to the invention,
FIG. 2 is a view similar to FIG. 1 but showing the tray in an open position,
FIG. 3 is a detail view in side elevation thereof, and,
FIG. 4 is a detail sectional view showing the slide mechanism for the tray.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings the reference charac- The tank 18 preferably is fabricated of a relatively rigid plastic materialand dimensioned to fit snugly within the framework. The tank includes a top wall 20 substantially co-planar with the top frame members 14 and formed with a rectilinear offset opening 22 providing access to the tank through a removable or hinged cover 23. The tank 18 is also provided with a drain valve 24 at the base thereof allowing the tank to be emptied when desired. The frame is provided with four casters 26, one at each corner thereof, to allow free mobility of the cart in any direction permitting the cart and its equipment to be moved from room to room quickly and easily.
On the left-hand end of the cart 12 as viewed in FIG. 1 there is mounted a housing 28 for electronic controls and circuits used in the operation of the dialysis machine. Knobs, dials, switches, etc., are mounted conve-' niently on the upper end of the housing 28.
Mounted to the top of the cart is a sliding .tray 30 adapted to support components of the dialysis machine such as a pump generally indicated by reference character 32 and a dialysis coil generally indicated by reference character 34.0ther accessory components may also be placed on the tray 30.
The tray 30 is generally rectangular in outline corresponding with the dimensions of the top of the frame but with a slight overhang along the sides. Preferably, the tray is fabricated of a plywood or pressed wood core 36 the outer surfaces of which are laminated with a plastic stratum 38 such as Formica or the like to provide a strong, rigid support for the dialysis components and a surface that is easily cleaned.
Extending downwardly from opposite sides of, the
horizontal portion of the tray are two elongated side panels 40 and 42 attached to the underside of the core 36 by cementing, fastening, or other means. The panels depend perpendicularly from the under-face of the tray and extend substantially the full length thereof. Each of the panels is provided with a pair of spaced rollers 42 and 44 which may be of metal or a plastic such as nylon and are supported each by a shaft 46 extending through the panel with the wheel mounted on the inside end thereof. A spacer 48 is provided between the inner face of the panel and the wheel and the wheel is retained on the shaft 46 bya cotter pin50 passed through a hole V formedtin the end of theshafLThe wheels ride on the upper frame members 14 which serve as rails and which preferably are of a hollow square cross-section:
and of stainless steel material to provide strength and d'urability.;ln order to limit transverse m'otion of the tray, a rib 52 may be fastened to the'i nner face of the panels 40 and %2 oppositely the rails 14 providing a slight clearance therewith. Preferably the rib'is of a' plasticmaterial such as nylon which williallow free ion gitudinal motionof the tray and willislide freely with} respect tothe rail if'in contact with it. lniplace 'ofthe rib 52 severalfplastic headed pins may be attached in a a line to the inner face of the panel to laterally position r *mentihas beencornpletecl, the tray isl returned to its i normalcompact position andthefcart maybe moved to s another locationt The' tank i e-readily, drained and and allcomponentsare 'conyenientiy accessiv the tray The rollers 42 and44 are mounted to the side i panels towards one end thereof with the rollers 42loshown in dottedfline'in the drawings.
In orderto limit the longitudinal motion of the tray, i 7
stops 54 and 56 are provided on each of the panels140 and 42. The stops typically are in thegform of L-shaped I legs attached to the lower edges of the panels and i project inwardly under the rails 14 sons to butt against the upright frame members 12 in either extreme posi' tionof the traynThe stopsare mountedto allow limited I longitudinal movcrnentofthe tray with the stop 5 4' locatednear the {extreme left-hand edgeiof the panel,
5 while thestop 56 is located'more towards the center of thepanel to the right of'the r0ller 44 as viewed in FIG.
3. In this positionthe rollers will be kept on the rails in either position of the tray and the left-handmotion Of' t the tray is limited to the closedpositionas shown in full line inFlG. 2 while its ri'gh' t-hand motion willbelimited by thefstop56 which is sufficient for the tray'to expose;
the tank'opening 22; Ty'picallycthis motion would be on the order of 7'ortso.lThe stops 54and56 not only serve tolimit the longitudinalmotion of the tray but also prevent the tray from'being tipped should 'the tray become unbalanced whe'niopen by reason of the weight a and position of the units 32 and 34, Since the stops errtend in under the railsfsuch tipping of the tray is pre- J yentedf 7 The cartprovides a compact and convenient dialysis 1 station integrated within one mobile unit. Allof the di a .i w 2,,A cartaccording to claimk'l wherein saidroller' fllyS'lS equipment, including thetank arepn the cartin i 21 very compact unit which is easily rolled about from room to room; When the dialysis machine isto be open ated; the attendant merely rolls th'eltray back and thus,
has direct accessto the tank opening. Once thetreatcleaned ble. Having thus States is:
comprising rbers, 1c 1 v thereof'adjacento'ne'endthereof;
(dyroller means rn ountedto the bottom of said frame; and supporting saidcart for free rolling movement, 1
"and
(e) a flat horizontally disposed tray lsubstantially co entensivewwith said top frame member and' mounted to said :top member for limited slidingy' movement relative fthereto', V r
"exposing said tank openingk said top member and said tray includ'es a: plurality of wheels mounted to said trayand engaging said rails, J l
, i 'panels extending longitudinally along each side; i
thereof and supportingsaidwheeis and (i members being spaced apart to limit the travel of said tray from a closed position fully over saidtop frame rnemher to: aniopen position exposing said i tank opening.
means are castetsq' i ;3. A cart according to claim l' including at least one, 7 low frictional boss mounted to the inner face of each I panel in opposing spaced relation to said'rails.
describedlthe'invention what we claim p and desire to' obtain by Letters; Patent of the United 7 A cartfor use in a mobile kidney dialysis; station (ata frame: including horizontally disposed 'top' a'nd bottom membersofrectangular outlineandivertia;
cal"membersconnectin g.saidtopandbottornmem l V a (b) a waterproof tankigenerall ycorresponding insize L :andshapeto said framemount'ed within said frame, I
c (c) said tank being'forr'ned with an opening at lhe t i V (f) said tray being adapted to supportlridney' dialysis) equipment and in one positionsaid tray covering I said tank opening andflinpanother positionjsaid tray (gYsaid top frame mberincluding a pair; of parallel rails, itine fixed'[horizontally along Meachside' of i{h, said tray iincluding a pair ofiparallel dependingj atplnrality of inwardly extending stop members ,1 mountedto said panel projectingundersaidrails 9 and engageahle with said vertical frame members at either extremeposition of said tray, said stop

Claims (3)

1. A cart for use in a mobile kidney dialysis station, comprising (a) a frame including horizontally disposed top and bottom members of rectangular outline and vertical members connecting said top and bottom members, (b) a waterproof tank generally corresponding in size and shape to said frame mounted within said frame, (c) said tank being formed with an opening at the top thereof adjacent one end thereof, (d) roller means mounted to the bottom of said frame and supporting said cart for free rolling movement, and (e) a flat horizontally disposed tray substantially coextensive with said top frame member and mounted to said top member for limited sliding movement relative thereto, (f) said tray being adapted to support kidney dialysis equipment and in one position said tray covering said tank opening and in another position said tray exposing said tank opening, (g) said top frame member including a pair of parallel rails, one fixed horizontally along each side of said top member and said tray includes a plurality of wheels mounted to said tray and engaging said rails, (h) said tray including a pair of parallel depending panels extending longitudinally along each side thereof and supporting said wheels, and, (i) a plurality of inwardly extending stop members mounted to said panel projecting under said rails and engageable with said vertical frame members at either extreme position of said tray, said stop members being spaced apart to limit the travel of said tray from a closed position fully over said top frame member to an open position exposing said tank opening.
2. A cart according to claim 1 wherein said roller means are casters.
3. A cart according to claim 1 including at least one low frictional boss mounted to the inner face of each panel in opposing spaced relation to said rails.
US404349A 1973-10-09 1973-10-09 Cart for dialysis machine Expired - Lifetime US3868154A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005266A2 (en) * 1978-05-03 1979-11-14 Vittorio Bonomini Hemodialysis apparatus
FR2428442A1 (en) * 1978-06-15 1980-01-11 Honda Motor Co Ltd ARTIFICIAL KIDNEY
US5938304A (en) * 1998-08-17 1999-08-17 Irby; John M. Protective cover arrangement for dialysis machines
US6284139B1 (en) * 1996-03-27 2001-09-04 Vito Piccirillo Peritoneal dialysis method
US10960124B2 (en) 2018-07-06 2021-03-30 Fresenius Medical Care Holdings, Inc. Devices, systems, and methods for heating dialysate for dialysis machines

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1315922A (en) * 1919-09-09 Show-case attachment
US1676810A (en) * 1926-04-23 1928-07-10 Art Metal Construction Co Posting bus or truck
US1827687A (en) * 1927-12-22 1931-10-13 Harry E Mccandless Combination crib, bathtub and dressing table
US2483920A (en) * 1947-11-07 1949-10-04 Hospital Furniture Inc Table attachment for beds
US2614017A (en) * 1944-08-09 1952-10-14 Mugnier Joachim Multiple table desk
US2635255A (en) * 1950-07-17 1953-04-21 Lawrence T Holden Article of furniture
US2653852A (en) * 1949-06-20 1953-09-29 Bissman Elizabeth Lois Drawer mount with cushioned adapter glides
US2760207A (en) * 1954-07-07 1956-08-28 Georgia E Glintz Portable shampoo cabinet
US2946638A (en) * 1959-03-31 1960-07-26 Acme Visible Records Inc Slidable shelf arrangement
US3032057A (en) * 1959-05-08 1962-05-01 James R Mays Hospital recovery service unit
US3054650A (en) * 1960-01-21 1962-09-18 Rhoda B Nordland Autopsy table

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1315922A (en) * 1919-09-09 Show-case attachment
US1676810A (en) * 1926-04-23 1928-07-10 Art Metal Construction Co Posting bus or truck
US1827687A (en) * 1927-12-22 1931-10-13 Harry E Mccandless Combination crib, bathtub and dressing table
US2614017A (en) * 1944-08-09 1952-10-14 Mugnier Joachim Multiple table desk
US2483920A (en) * 1947-11-07 1949-10-04 Hospital Furniture Inc Table attachment for beds
US2653852A (en) * 1949-06-20 1953-09-29 Bissman Elizabeth Lois Drawer mount with cushioned adapter glides
US2635255A (en) * 1950-07-17 1953-04-21 Lawrence T Holden Article of furniture
US2760207A (en) * 1954-07-07 1956-08-28 Georgia E Glintz Portable shampoo cabinet
US2946638A (en) * 1959-03-31 1960-07-26 Acme Visible Records Inc Slidable shelf arrangement
US3032057A (en) * 1959-05-08 1962-05-01 James R Mays Hospital recovery service unit
US3054650A (en) * 1960-01-21 1962-09-18 Rhoda B Nordland Autopsy table

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005266A2 (en) * 1978-05-03 1979-11-14 Vittorio Bonomini Hemodialysis apparatus
FR2424743A1 (en) * 1978-05-03 1979-11-30 Bonomini Vittorio HEMODIALYSIS APPARATUS
EP0005266A3 (en) * 1978-05-03 1979-12-12 Vittorio Bonomini Hemodialysis apparatus
FR2428442A1 (en) * 1978-06-15 1980-01-11 Honda Motor Co Ltd ARTIFICIAL KIDNEY
US6284139B1 (en) * 1996-03-27 2001-09-04 Vito Piccirillo Peritoneal dialysis method
US5938304A (en) * 1998-08-17 1999-08-17 Irby; John M. Protective cover arrangement for dialysis machines
US10960124B2 (en) 2018-07-06 2021-03-30 Fresenius Medical Care Holdings, Inc. Devices, systems, and methods for heating dialysate for dialysis machines

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