EP3436701B1 - Pumpenmodul für eine pumpe zur blutprobenentnahme - Google Patents

Pumpenmodul für eine pumpe zur blutprobenentnahme Download PDF

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Publication number
EP3436701B1
EP3436701B1 EP17717787.0A EP17717787A EP3436701B1 EP 3436701 B1 EP3436701 B1 EP 3436701B1 EP 17717787 A EP17717787 A EP 17717787A EP 3436701 B1 EP3436701 B1 EP 3436701B1
Authority
EP
European Patent Office
Prior art keywords
pump
pumping assembly
assembly according
chamber
pumping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP17717787.0A
Other languages
English (en)
French (fr)
Other versions
EP3436701A1 (de
Inventor
Khaled Abou-Saleh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tecan Trading AG
Original Assignee
Tecan Trading AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tecan Trading AG filed Critical Tecan Trading AG
Publication of EP3436701A1 publication Critical patent/EP3436701A1/de
Application granted granted Critical
Publication of EP3436701B1 publication Critical patent/EP3436701B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/007—Cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • the present invention relates to the field of piston pumps used in automatic sampling, in particular pumps of the syringe type used for taking a blood sample with a view to its analysis by an automatic device.
  • the object of the invention is to provide means for manufacturing reliable pumps at low cost.
  • the invention provides a pumping assembly according to claim 1.
  • the pump body comprises a base and means for fixing said base on a frame.
  • the fixing means of the base may be devoid of an internal thread, and preferably are smooth bores.
  • the body may further include a side duct connecting a side wall of the chamber with the connection face.
  • the invention also relates to a family of pumping assembly according to the invention, characterized in that it comprises several pump bodies having identical external dimensions, each pump body having a specific chamber diameter.
  • the invention also relates to a pump comprising a pumping assembly according to the invention.
  • the figures 1 to 4 illustrate a pump body 10 intended to be mounted with a solenoid valve 11 on a pump 100.
  • an interface part 12 provides a fluid connection between the body 10 and the valve 11.
  • This interface part can be an independent part, it can be an integral part of the solenoid valve 11.
  • the body 10 is in a substantially cylindrical shape, of diameter D10, around a vertical axis X10.
  • This cylindrical shape is truncated in an upper part 14 by two flats forming two opposite faces 15,16, plane, vertical and parallel to each other.
  • the X10 axis is equidistant from the two faces 15,16.
  • the body Under the upper part 14, the body comprises a base 17 which is substantially cylindrical around the axis X10.
  • the upper part 14 extends vertically upwards from the base 17.
  • the thickness E17 of the base is small relative to the total height H10 of the body and to the diameter D10 of the body.
  • E17 ⁇ H10 / 4 and, E17 ⁇ D10 / 4.
  • the base comprises, on either side of the upper part, bores 18 vertically passing through the base. As shown in figure 9 , these bores 18 are provided to fix and position the body 10 on a central part 40 of the pump 100. Thanks to this arrangement, it is not necessary for the body to include an internal thread to fix it to a frame.
  • Bores 19 are formed in the upper part 14 of the body, perpendicular to the opposite faces 15,16.
  • the solenoid valve 11, via its interface 12, is fixed on a front face 15, among the opposite faces 15,16, of the body 10, so that it extends horizontally from this front face 15.
  • L Interface 12 has a substantially rectangular vertical section. It comprises a front face, vertical 21, against which the solenoid valve 11 is fixed, so that the latter extends horizontally from the front face 21 of the interface 12.
  • the solenoid valve 11 has a substantially rectangular, substantially vertical section. identical to that of the interface, so the interface and the solenoid valve form an assembly of substantially constant vertical section, in the extension of one another.
  • a counterpart 22 is fixed against the rear face 16, among the opposite faces 15,16, of the body 10.
  • Each bore 19, formed in the upper part 14 of the body, is arranged so that it opens out on the one hand on the front face 15, facing the interface 12, and, on the other hand, in the face on the rear face 16, facing the counterpart 22.
  • Each bore 19 is further formed to fit therein a fixing rod, not shown in the figures. Each rod passes through body 10, keeping it clamped between the interface 12 and the counterpart 22, fixing them to the body. Thanks to this arrangement, it is not necessary for the body to include an internal thread in order to fix the interface 12 and / or the counterpart 22 thereto.
  • the body further comprises a pumping chamber 26, substantially cylindrical about the axis X10.
  • the chamber comprises an opening 25 in a lower face 27 of the body, so as to be able to introduce therein a piston 41, shown in figure 9 .
  • the chamber extends through the base 17 into the upper part 14 of the body 10. It comprises an end upper 28 of frustoconical shape, forming a bottom 28 axially opposite to the opening 25. The diameter of the frustoconical bottom 28 decreases upwards.
  • the body 10 further comprises an elbow conduit 29 fluidly connecting the top of the upper end 29 of the chamber with the front face of the body, and beyond, with the fluidic interface 12.
  • the conduit 29 serves both intake and exhaust for a fluid in the pumping chamber 26.
  • the fluid is distributed by the solenoid valve 11.
  • the chamber 26 has a main diameter D26, measured in the part provided for the sliding of the piston 41 and a height H26, measured between the lower face 17 of the base 17 and the base of the frustoconical end
  • a width L14 of the body, between the two faces 15,16 of its upper part 14, is provided for chambers of several chamber diameters D26.
  • the diameter D26 of the chamber 26 of the figure 4 is smaller than that of room 26 of the figure 3 .
  • the rooms 26 of figures 3 and 4 also have the same height H26.
  • H26 the diameter of the piston must be adapted to the diameter D26 of the chamber, the possible stroke of the piston in the chamber remaining substantially the same.
  • the body 10 is designed to be mounted without a solenoid valve.
  • the bent duct it comprises a lateral duct 30, connecting a lateral wall 32 of the chamber, in the cylindrical zone of main diameter D26, with the front face 15.
  • the interface 12 used in this second embodiment is adapted to extend each of the conduits 29, 30 by respective conduits 34, 35, in order to connect them to the rest of the device.
  • the chamber is therefore connected with the front face 15 by two ducts, one serving for the admission of fluid into the chamber, the other duct serving for the escape of the fluid.
  • the interface 12 used in this second embodiment is fixed by two screws passing through the bores 19.
  • the family comprises four pump bodies 10, adapted to operate without a solenoid valve, each having a specific chamber diameter D26.
  • the body 10 of the second embodiment, illustrated in figures 5 to 8 differs from the body according to the first embodiment, illustrated in figures 1 to 4 , only in that it comprises a second duct 30 formed in a side wall of the chamber 26.
  • the body is fixed by bores, without tapping, it can be made by molding more precisely and at lower cost.
  • the molding of an internal thread is a complex operation; poor filling of material around the core forming the mold for tapping produces fracture initiators in the injected material, which reduces the reliability of the part thus manufactured, and can lead to the scrapping of many parts, which increases it the cost of manufacture.
  • connection face can have a shape other than planar, provided that it can be mounted with sealing against the interface. It can be cylindrical or spherical.
  • a flat connection face may include a flat surface and suitable recesses to allow manufacture by molding, in particular to avoid excessively large thicknesses of the walls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (10)

  1. Pumpmodul für eine Pumpe zur Entnahme einer Blutprobe, dadurch gekennzeichnet, dass dieses einen Pumpenkörper (10) und eine Fluidschnittstelle (12) umfasst, wobei der Pumpenkörper (10) umfasst:
    - eine um eine Pumpachse (X10) im Wesentlichen zylindrische Pumpkammer (26) mit einer Öffnung zum axialen Einführen eines Kolbens und mit einem der Öffnung axial gegenüberliegenden Boden (28);
    - eine Verbindungsfläche (15);
    - ein abgewinkeltes Rohr (29), das den Boden (28) mit der Fläche (15) verbindet;
    - Mittel (19) zum Festlegen der Fluidschnittstelle (12) an der Verbindungsfläche (15) des Pumpenkörpers (10) derart, dass die Verbindungsfläche unter Dichtheit an der Fluidschnittstelle festgelegt ist;
    wobei das Pumpmodul dadurch gekennzeichnet ist, dass die Mittel (19) zum Festlegen gewindefreie Bohrungen (19) sind, die in dem Pumpenkörper (10) gebildet sind, wobei die Bohrungen jeweils zum Einführen eines Befestigungsbolzens vorgesehen sind.
  2. Pumpmodul nach Anspruch 1, dadurch gekennzeichnet, dass dieses eine Basis (17) und Mittel (18) zum Festlegen der Basis an einem Gestell aufweist.
  3. Pumpmodul nach Anspruch 2, dadurch gekennzeichnet, dass die Mittel (18) zum Festlegen der Basis (17) gewindefrei sind und vorzugsweise glatte Bohrungen sind.
  4. Pumpmodul nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass dieses ferner eine seitliche Leitung (30) aufweist, die eine Seitenwand (32) der Kammer (26) mit der Verbindungsfläche (15) verbindet.
  5. Pumpmodul nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Verbindungsfläche (15) eben ist.
  6. Pumpmodul nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Verbindungsfläche (15) parallel zur Achse (X10) des Körpers ist.
  7. Pumpmodul nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass dieses ein Magnetventil (11) umfasst, das über die Schnittstelle (12) fluidtechnisch mit der Verbindungsfläche (15) des Körpers verbunden ist.
  8. Pumpmodul nach Anspruch 7, dadurch gekennzeichnet, dass die Fluidschnittstelle integraler Bestandteil des Magnetventils ist.
  9. Familie von Pumpmodulen nach den vorangehenden Ansprüchen, dadurch gekennzeichnet, dass diese eine Familie von Körpern umfasst, wobei sämtliche Pumpenkörper identische Außenabmessungen haben und wobei jeder Pumpenkörper einen spezifischen Kammerdurchmesser (D26) aufweist.
  10. Pumpe (100), dadurch gekennzeichnet, dass diese ein Pumpmodul nach einem der Ansprüche 1 bis 8 aufweist.
EP17717787.0A 2016-03-29 2017-03-27 Pumpenmodul für eine pumpe zur blutprobenentnahme Not-in-force EP3436701B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652663A FR3049659B1 (fr) 2016-03-29 2016-03-29 Corps de pompe modulable
PCT/FR2017/050698 WO2017168080A1 (fr) 2016-03-29 2017-03-27 Corps de pompe modulable

Publications (2)

Publication Number Publication Date
EP3436701A1 EP3436701A1 (de) 2019-02-06
EP3436701B1 true EP3436701B1 (de) 2020-12-02

Family

ID=56008783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17717787.0A Not-in-force EP3436701B1 (de) 2016-03-29 2017-03-27 Pumpenmodul für eine pumpe zur blutprobenentnahme

Country Status (5)

Country Link
US (1) US20190107107A1 (de)
EP (1) EP3436701B1 (de)
CN (1) CN108884827B (de)
FR (1) FR3049659B1 (de)
WO (1) WO2017168080A1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235316C1 (de) * 1982-09-24 1984-01-05 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Verschluss fuer Gehaeuse-OEffnungen bei Kolbenpumpen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3667034B2 (ja) * 1996-07-17 2005-07-06 光洋精工株式会社 電動ポンプ
US6991397B2 (en) * 2003-11-07 2006-01-31 Modular Systems, Inc. Dowel fastener and joints including same
FR2895919B1 (fr) * 2006-01-11 2008-03-14 Pulssar Technologies Sarl Dispositif de pompage.
FR2904065A1 (fr) * 2006-07-18 2008-01-25 Pulssar Technologies Sarl Unite de pompage a duree de vie elevee.
FR2904066B1 (fr) * 2006-07-18 2012-08-24 Pulssar Technologies Unite de pompage a duree de vie elevee.
FR2974155B1 (fr) * 2011-04-12 2015-12-18 Pulssar Technologies Pompe a piston comportant un guidage a plat.
WO2013164495A1 (es) * 2012-05-03 2013-11-07 Garraf Maquinaria, S. A. Bomba de pistón monobloque con sistema antipérdidas
US20140271264A1 (en) * 2013-03-15 2014-09-18 Anthony Florindi Piston pump drive train anti-backlash
CN104963961A (zh) * 2015-06-26 2015-10-07 丁巧娜 一种车辆离合器泵

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3235316C1 (de) * 1982-09-24 1984-01-05 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Verschluss fuer Gehaeuse-OEffnungen bei Kolbenpumpen

Also Published As

Publication number Publication date
FR3049659B1 (fr) 2019-09-06
CN108884827B (zh) 2021-03-02
CN108884827A (zh) 2018-11-23
WO2017168080A1 (fr) 2017-10-05
FR3049659A1 (fr) 2017-10-06
US20190107107A1 (en) 2019-04-11
EP3436701A1 (de) 2019-02-06

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