EP0019205A1 - Pompe à tuyau flexible pour usages médicaux - Google Patents

Pompe à tuyau flexible pour usages médicaux Download PDF

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Publication number
EP0019205A1
EP0019205A1 EP80102496A EP80102496A EP0019205A1 EP 0019205 A1 EP0019205 A1 EP 0019205A1 EP 80102496 A EP80102496 A EP 80102496A EP 80102496 A EP80102496 A EP 80102496A EP 0019205 A1 EP0019205 A1 EP 0019205A1
Authority
EP
European Patent Office
Prior art keywords
pump
hose
cover
pump housing
closure
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.)
Withdrawn
Application number
EP80102496A
Other languages
German (de)
English (en)
Inventor
Klaus Dr. Med. Strackharn
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.)
STRACKHARN MEDIZINTECHNIK KG D
Original Assignee
STRACKHARN MEDIZINTECHNIK KG D
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 STRACKHARN MEDIZINTECHNIK KG D filed Critical STRACKHARN MEDIZINTECHNIK KG D
Publication of EP0019205A1 publication Critical patent/EP0019205A1/fr
Withdrawn legal-status Critical Current

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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Definitions

  • the invention relates to a hose pump, which is to be used in particular for medical purposes, for example for carrying out infusions and / or transfusions.
  • Peristaltic pumps of this type are known per se. They consist of a pump housing with a drive motor and sealing cover, a rotor which is circumferentially arranged in the pump housing and has at least two squeeze rollers and at least one hose which is guided through the working gap between the pump housing and squeeze rollers.
  • peristaltic pumps are used in laboratory technology as well as in general for dosing purposes. They can also have a plurality of hoses which are arranged parallel to one another and are guided together through the pump section arranged between the rotor and the pump housing.
  • peristaltic pumps are to be used for purposes in which the exact delivery rate is required, such as in the medical field, special attention must be paid to the elastic deformation behavior of the hose used.
  • the squeezed tube In order to maintain a constant delivery volume over a longer period of time, it is essential that the squeezed tube, after being relieved, returns to its original shape, in particular its original volume.
  • Hoses made of special rubber compounds have this property to an outstanding degree, so that special rubber hoses are used to equip such pumps.
  • plastic hoses for example those made of soft polyvinyl chloride or similar materials.
  • the resilience of these materials is often not sufficient, especially if the pump has to be operated for a prolonged period, so that heating to temperatures of approximately 25 to 30 ° occurs. At these elevated temperatures, many plastic materials are already in a quasi-plastic state, largely losing their elastic behavior.
  • the invention has for its object a hose to propose a pump in which plastic hoses, for example those made of soft polyvinyl chloride, can also be used without the delivery volume changing during prolonged operation or when heated.
  • this object is achieved by the characteristics that are given the P a-1 tent sues in the characterizing part.
  • the squeeze zone is formed by a pin which is arranged on the closure cap of the pump and engages in a guide gap of the pump housing with the lid closed.
  • the pump hose can be easily removed from the pump with the lid open and replaced with a new one. This is particularly important for pumps that are to be used in the medical field, since a new hose has to be threaded for each use for reasons of sterility.
  • the closure cover After inserting the hose, the closure cover only needs to be closed, the desired throttle point automatically forming by engaging the mentioned pin in the guide gap.
  • a further guide gap for the pump hose is also present on the inlet side of the hose pump, which can be closed on the cover side with a pin arranged on the closure cover, but which is dimensioned such that there is no pinch zone for the hose.
  • the proposed overall construction can advantageously be constructed in such a way that the pump housing and the closure cover are arranged in a horizontal or desk-like - oblique position and the pump hose is thus accessible from above.
  • the result is a compact overall construction with maximum ease of use. This is particularly not only a convenience-promoting ingredient for pumps that are to be used in the medical field, but also supports to an exceptional extent the speed with which such a pump can be made ready for use.
  • the pump shown in the drawing is designated as a whole by 1. It consists of the pump housing 2, which is equipped below the plane of the drawing with a drive motor not recognizable in the drawing.
  • the pump housing is arranged in the illustrated embodiment so that the operating side 3 is on top and all important parts are easily accessible.
  • the pump housing 2 is also with a closure Cover 4 equipped, for example made of transparent plastic, such as acrylic glass or the like. can exist and which is hinged with the help of hinges 5 on the pump housing.
  • a closure Cover 4 equipped, for example made of transparent plastic, such as acrylic glass or the like. can exist and which is hinged with the help of hinges 5 on the pump housing.
  • a rotor 6 is arranged in the pump housing and, in the exemplary embodiment shown, is fastened to the motor shaft 8 by means of clamping screws 7.
  • the rotor consists of two spring-mounted rotor arms 9 and 9 ', which each have pinch rollers 10 and 10' at their outer ends.
  • the dimensions of the rotor and the housing recess 11 are such that there is a working gap 12 between the pinch rollers 10 and the housing recess 11, in which a hose 13 runs.
  • the hose 13 enters the pump on the inlet side 14. It is held in the correct position by a guide piece 15, then deflected by a deflection piece 16 in such a way that it enters the guide gap 17.
  • This guide gap is open at the top when the cover is open. If the closure lid is closed, a pin 18 engages in the guide gap 17 and closes it in such a way that the pump hose 13 is held in the correct position, but otherwise has sufficient play to be able to move in the direction of its longitudinal axis.
  • the guide pieces 15 and 22 are in a preferred embodiment.
  • the parts 21-22 ensure that the hose is also guided exactly on the pressure side of the pump.
  • a squeeze zone 23 is present on the pressure side 19, which fixes the tube 13 and also forms a throttle point in the tube lumen.
  • the pinch zone 23 comes about in that a pin 24 is arranged on the closure cover 4, which engages in the guide gap 20 when the cover is closed and has a length 25 such that it compresses the hose 13 without closing it.
  • the squeeze zone 23 is again shown separately in cross section in FIG. 2.
  • the drawing also shows that the closure cover 4 is equipped with spacers 29 and closing parts 26.
  • a total of two circular permanent magnetic disks 26 are arranged in the closure cover and two further permanent magnetic disks 26 1 as closing parts in the pump housing, while the spacers are circular rubber disks 29. If the cover is closed, the two permanent magnetic disks 26 of the cover lying next to one another meet the two permanent magnetic disks 26 ′ of the pump housing.
  • At least one guide fork 27 is arranged on the rotor 6 in front of each pinch roller 10 at the level of the hose inlet. If the rotor rotates in accordance with the arrow 28 during operation, the guide fork 27 first detects the hose 13 and places it exactly in a position which corresponds to the following pinch roller 10.
  • FIG. 1 drawing in particular Fig. Can be further seen that the pump housing 2 and the cap 4 in a horizontal position are arranged, whereby the P environmentally penschlauch accessible from above. The same is achieved if the parts mentioned are arranged in a desk-like position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • External Artificial Organs (AREA)
EP80102496A 1979-05-10 1980-05-08 Pompe à tuyau flexible pour usages médicaux Withdrawn EP0019205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792918797 DE2918797A1 (de) 1979-05-10 1979-05-10 Schlauchpumpe fuer medizinische zwecke
DE2918797 1979-05-10

Publications (1)

Publication Number Publication Date
EP0019205A1 true EP0019205A1 (fr) 1980-11-26

Family

ID=6070362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102496A Withdrawn EP0019205A1 (fr) 1979-05-10 1980-05-08 Pompe à tuyau flexible pour usages médicaux

Country Status (2)

Country Link
EP (1) EP0019205A1 (fr)
DE (1) DE2918797A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566057A1 (fr) * 1984-02-03 1985-12-20 Hospal Sa Pompe peristaltique a chargement automatique du tube
WO2005088130A1 (fr) * 2004-03-04 2005-09-22 Cole-Parmer Instrument Company Pompe peristaltique
US7980835B2 (en) 2007-01-19 2011-07-19 Cole-Parmer Instrument Company Tube retainer system for a peristaltic pump
US8052399B2 (en) 2007-10-18 2011-11-08 Cole-Parmer Instrument Company Peristaltic pump
EP2679752A1 (fr) * 2012-06-27 2014-01-01 B. Braun Avitum AG Dispositif de couvercle pour le support pivotant d'un couvercle sur un appareil médical
US9101702B2 (en) 2011-01-28 2015-08-11 Fresenius Medical Care Deutschland Gmbh Flexible tubing pump and therewith equipped blood treatment device
CN109649011A (zh) * 2019-01-08 2019-04-19 北京印刷学院 一种机械出墨头
CN114992100A (zh) * 2022-06-29 2022-09-02 重庆山外山血液净化技术股份有限公司 能自动拆装泵管的蠕动泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR854088A (fr) * 1938-12-10 1940-04-04 Pompe à usages divers et notamment médicaux chirurgicaux et scientifiques
US3137240A (en) * 1961-07-17 1964-06-16 Russell G Hunt Pumps
US3138104A (en) * 1962-11-23 1964-06-23 Manostat Corp Variable feed pump and related method
DE2126260A1 (de) * 1970-06-02 1971-12-16 VEB Kombinat Medizin- und Labortechnik, χ 7035 Leipzig Schlauchpumpe mit einstellbarer Fördermenge
US3756752A (en) * 1971-12-20 1973-09-04 G Stenner Peristaltic pump
US3837433A (en) * 1973-03-05 1974-09-24 Roper Corp Lubricating system for chain saw
FR2338709A1 (fr) * 1976-01-26 1977-08-19 Baxter Travenol Lab Procede et dispositif pour pratiquer des injections dosees de fluide dans le corps humain

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR854088A (fr) * 1938-12-10 1940-04-04 Pompe à usages divers et notamment médicaux chirurgicaux et scientifiques
US3137240A (en) * 1961-07-17 1964-06-16 Russell G Hunt Pumps
US3138104A (en) * 1962-11-23 1964-06-23 Manostat Corp Variable feed pump and related method
DE2126260A1 (de) * 1970-06-02 1971-12-16 VEB Kombinat Medizin- und Labortechnik, χ 7035 Leipzig Schlauchpumpe mit einstellbarer Fördermenge
US3756752A (en) * 1971-12-20 1973-09-04 G Stenner Peristaltic pump
US3837433A (en) * 1973-03-05 1974-09-24 Roper Corp Lubricating system for chain saw
FR2338709A1 (fr) * 1976-01-26 1977-08-19 Baxter Travenol Lab Procede et dispositif pour pratiquer des injections dosees de fluide dans le corps humain

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566057A1 (fr) * 1984-02-03 1985-12-20 Hospal Sa Pompe peristaltique a chargement automatique du tube
WO2005088130A1 (fr) * 2004-03-04 2005-09-22 Cole-Parmer Instrument Company Pompe peristaltique
US7478999B2 (en) 2004-03-04 2009-01-20 Cole-Parmer Instrument Company Peristaltic pump
US7980835B2 (en) 2007-01-19 2011-07-19 Cole-Parmer Instrument Company Tube retainer system for a peristaltic pump
US8052399B2 (en) 2007-10-18 2011-11-08 Cole-Parmer Instrument Company Peristaltic pump
US9101702B2 (en) 2011-01-28 2015-08-11 Fresenius Medical Care Deutschland Gmbh Flexible tubing pump and therewith equipped blood treatment device
EP2679752A1 (fr) * 2012-06-27 2014-01-01 B. Braun Avitum AG Dispositif de couvercle pour le support pivotant d'un couvercle sur un appareil médical
US9415911B2 (en) 2012-06-27 2016-08-16 B. Braun Avitum Ag Lid apparatus for the pivotable support of a lid on a medical device for extracorporeal blood treatment; medical device for extracorporeal blood treatment with lid apparatus
CN109649011A (zh) * 2019-01-08 2019-04-19 北京印刷学院 一种机械出墨头
CN114992100A (zh) * 2022-06-29 2022-09-02 重庆山外山血液净化技术股份有限公司 能自动拆装泵管的蠕动泵
CN114992100B (zh) * 2022-06-29 2023-12-22 重庆山外山血液净化技术股份有限公司 能自动拆装泵管的蠕动泵

Also Published As

Publication number Publication date
DE2918797A1 (de) 1980-11-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19811118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STRACKHARN, KLAUS, DR. MED.