EP0547726A1 - Pompe péristaltique - Google Patents

Pompe péristaltique Download PDF

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Publication number
EP0547726A1
EP0547726A1 EP92250333A EP92250333A EP0547726A1 EP 0547726 A1 EP0547726 A1 EP 0547726A1 EP 92250333 A EP92250333 A EP 92250333A EP 92250333 A EP92250333 A EP 92250333A EP 0547726 A1 EP0547726 A1 EP 0547726A1
Authority
EP
European Patent Office
Prior art keywords
bracket
slide
peristaltic pump
unrolling
pump according
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Withdrawn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
EP92250333A
Other languages
German (de)
English (en)
Inventor
Peter P. Dipl.-Ing. Wiest
Richard Dipl.-Ing. Korejwo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0547726A1 publication Critical patent/EP0547726A1/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Withdrawn legal-status Critical Current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
    • F04B43/1284—Means for pushing the backing-plate against the tubular flexible member

Definitions

  • the invention relates to a peristaltic pump according to the features of the preamble of claim 1.
  • a peristaltic pump is used in particular for the perfusion of body cavities with a liquid, e.g. for suction and irrigation in minimally invasive surgery.
  • a peristaltic pump of the generic type is previously known from DE 33 38 758 C2.
  • the roller wheel is approximately semicircularly surrounded by a roll-off bracket against which the rollers of the roller wheel press the elastic hose to effect the pumping movement.
  • the roll bar is on two spaced apart and parallel to each other Guide rods movable and can be moved from its working position to the rest position against the action of spring elements. To do this, an unlocking button must be depressed, which releases a spring-loaded locking lever. Moving the roll bar from its rest position into its working position is possible by pressing the locking button against the action of the spring elements.
  • the disadvantage here is that when the pump is closed, i.e. when moving the roll bar into its working position, a closing force of up to 50 Kp must be applied, which corresponds to a system pressure of 3 bar at a delivery rate of 4 ltr / min.
  • a closing force of up to 50 Kp must be applied, which corresponds to a system pressure of 3 bar at a delivery rate of 4 ltr / min.
  • the pump is closed manually, i.e. when manually pushing the roll bar against the roller wheel, the risk that the operator squeezes his fingers between the roll bar and the roller wheel.
  • the invention is therefore based on the object of improving a peristaltic pump of the generic type in such a way that when the pump is closed, i.e. when pushing the roll bar against the roller wheel, there is no risk of injury to the operator.
  • the invention provides that the unrolling bracket is bridged by a slide which can be advanced over the region of the space between the unrolling bracket and the roller wheel when the unrolling bracket is in the open position, means being provided which actuate the closing device of the Only enable the roll-off bar when the slide is in its advanced position.
  • the area of the space between the roll bar and the roller wheel is pushed forward by the one on the roll bar Slider closed and thus secured against unwanted intervention by the operator and on the other hand it is ensured that the actuation of the closing device of the roll bar can only be carried out when the slide is in its advanced position. Both measures together bring about a significant improvement in the peristaltic pump with regard to an absolute safety of the operator against injuries.
  • the unrolling bar is also provided with a motor-driven opening and closing device and the actuating elements for the opening and closing device are arranged on the unrolling bar, the actuating element for the closing movement of the unwinding bar only being released by the slide when the unrolling bar is in the open position, when this is advanced over the area of the space between the roll bar and the roller wheel.
  • This provides a further essential safety for the operator, especially since the actuating element for the closing movement of the roll bar can only be operated when the slide has released it, i.e. is advanced over the area of the space between the roll bar and the roller wheel.
  • the actuating elements for the opening and closing movement of the roll-off bar are arranged on the roll-off bar itself, the roll-off bar being additionally spanned by a cover which can be moved therewith and on which the actuating elements are arranged.
  • the peristaltic pump comprises a base plate 1, on the back of which the main gear 2 and the opening and closing device 3 are flanged, and on the front of which two roller wheels 4, 5 with associated rollers 6 and pressure brackets 7, 8 opposite them with associated carriers 9, 10 are arranged which are guided on the base plate 1 by means of a carrier plate 11.
  • the peristaltic pump is constructed in two stages, with the inner roller wheel 4 on the outer one Drive shaft 12 and the outer roller wheel 5 are mounted on the inner drive shaft 13 of the main transmission 2.
  • the main transmission 2 is designed so that the two roller wheels 4, 5 can be driven independently or together.
  • This is set in peristaltic pumping movements when the rollers 6 roll on the respective rolling surface 15.
  • the two pressure brackets 7, 8 are supported by spring elements 17 on the respective supports 9, 10 and are guided by guide rods 19 on the supports 9, 10, which engage in guide grooves in the end faces of the pressure brackets 7, 8, as a result of which the axial movement of the pressure brackets 7 , 8 in the direction of the roller wheels 4,5 and away from them is ensured.
  • recesses are made in which the spring elements 17, here in the form of compression springs, are inserted.
  • the pressure clamps 7, 8 are opposite an adapter plate 23 that closes off the movement space of the roller wheels 4, 5 and also serves to hold the hoses 16.
  • a bearing plate 24 is screwed, which serves to mount the inner drive shaft 13 of the main transmission 2.
  • a guide plate 25 is screwed on, which serves to receive guide rods 26 in guide grooves which are embedded in the inside of the guide plate 25.
  • the adapter plate 23 is on the side of the guide plate 25 screwed on.
  • the two guide rods 26 are firmly connected to the carrier plate 11, on which the two inner and outer carriers 9, 10 for the pressure clamps 7, 8 are firmly attached.
  • the carrier plate 11 has a recess 29 in which a toothed rack 30 is firmly inserted. With this meshes a drive pinion, which is the output pinion of the gear 37 of the opening and closing device 3, which is driven by an electric motor 32 via a worm 33 and a worm wheel 34.
  • the other elements of the transmission 37 are not shown in detail. It is essential that the driven pinion can be operated alternately in both directions of rotation by the electric motor 32 via the worm 33 and the worm wheel 34 and the gear 37 (not shown in more detail).
  • the pump When the drive pinion rotates in one direction, the pump is opened, ie the toothed rack 30 and thus the carrier plate 11 are shifted to the left, so that the two pressure brackets 7, 8 can be removed from the rollers 6 of the associated roller wheels 4, 5.
  • the hoses 16 can then be inserted, removed or replaced.
  • the pump closes, the pressure clamps 7, 8 being moved against the roller wheels 4, 5 and clamping the tubes 16 between their rolling surfaces 15 and the peripheral surfaces of the rollers 6.
  • the closing movement is ended as soon as the leading edge of the carrier plate 11 abuts the side surface of the guide plate 25, which forms an end stop for the carrier plate 11.
  • the electric motor 32 is stopped and the gear 37 of the opening and closing device 3 remains in the desired end position via the self-locking between the worm 33 and the worm wheel 34.
  • the from the carrier plate 11, the carriers 9, 10 fastened thereon and those guided thereon via the guide rods 19, spring-loaded pressure bracket 7,8 formed roll bar 18 is spanned by a cover 20 made of plastic, which is screwed to the outer support 10.
  • the cover 20 is U-shaped in cross section and has a front edge 21 which is concentric with the rolling surface 15 and which is set back by a small amount compared to the rolling surface 15.
  • two switches in the form of membrane buttons 27, 28 are attached, which are electrically connected to the opening and closing device 3 and are used to actuate them.
  • the membrane button 27 serves to initiate the closing movement of the roll-off bracket 18
  • the membrane button 28 serves to initiate the opening movement of the roll-off bracket 18, as the arrows show.
  • a light-emitting diode 31 is assigned to the membrane button 27, which indicates the final closed state of the roll bar 18.
  • a slide 35 of U-shaped cross section Mounted on the cover 20 is a slide 35 of U-shaped cross section, the legs 36 of which are provided with inwardly projecting guide strips 38 which are guided in longitudinal grooves 41 arranged on the top and bottom of the cover 20.
  • the slide 35 can thus be pushed back and forth on the cover 20 between two end positions.
  • the slide 35 is made of transparent plastic.
  • a U-shaped recess 43 is made in the region of the trailing edge 42 of the slider 35 in the front of the slider 35 and occupies approximately half the width of the front 44 of the slider 35.
  • the two membrane buttons 27, 28 are arranged next to one another or one above the other and transversely to the longitudinal axis 45 of the base plate 1, the membrane button 28 being arranged in the movement area of the recess 43 of the slide 35 for initiating the opening movement of the roll-off bracket 18, which serves the purpose described below .
  • the tubes 16 have to be inserted between the rolling surfaces 15 of the rolling bracket 18 and the roller wheels 4, 5 and have to be removed again for exchange.
  • the roll bar 18 is moved away from the roller wheels 4, 5 by means of the opening and closing device 3, as is shown in FIG. 6.
  • the area of the roller wheels 4, 5 is closed by a fixed cover 46 made of plastic, which is firmly screwed to the adapter plate 23.
  • the area of the intermediate space 47 between the roll bar 18 and the roller wheels 4, 5 is freely accessible. There is a risk that the operator gets their fingers between the rolling surfaces 15 of the rolling bracket 18 and the roller wheels 4,5 when closing the unrolling bracket 18 when the motor-driven opening and closing device 3 is activated. As shown in FIG.
  • both membrane buttons 27, 28 are covered by the slide 35 in the open position of the roll-off bar, as long as the space 47 is freely accessible.
  • An actuation of the opening and closing device 3 by means of the membrane button 27 for closing the roll-off bracket 18 is only possible when the slide 35 is moved into its advanced position shown in FIG. 7, in which the space 47 between the roll-off bracket 18 and the roller wheels 4,5 is closed against external intervention by means of the slide 35. Only now is the membrane button 27 released to initiate the closing movement of the roll bar 18 and can be actuated by the operator.
  • the unwinding bracket 18 is now moved into its closed position shown in FIG. 8 without there being any risk that the operator can intervene in the intermediate space 47.
  • the membrane button 28 is freely accessible through the recess 43 for initiating the opening movement of the roll bar 18.
  • the light emitting diode 31 can light up clear plastic existing slide 35 can be recognized, which is a sign that the roll bar 18 is securely closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Reciprocating Pumps (AREA)
  • External Artificial Organs (AREA)
EP92250333A 1991-11-19 1992-11-12 Pompe péristaltique Withdrawn EP0547726A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914138729 DE4138729C1 (fr) 1991-11-19 1991-11-19
DE4138729 1991-11-19

Publications (1)

Publication Number Publication Date
EP0547726A1 true EP0547726A1 (fr) 1993-06-23

Family

ID=6445539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92250333A Withdrawn EP0547726A1 (fr) 1991-11-19 1992-11-12 Pompe péristaltique

Country Status (3)

Country Link
EP (1) EP0547726A1 (fr)
JP (1) JPH0646993B2 (fr)
DE (1) DE4138729C1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006817A1 (fr) * 1993-08-31 1995-03-09 Valleylab, Inc. Cartouche de tete de pompe
EP1518572A1 (fr) * 2003-09-29 2005-03-30 Japan Servo Co. Ltd. Pompe péristaltique
DE102011081722A1 (de) * 2011-08-29 2013-02-28 Aesculap Ag Schlauchaufnahme einer Rollerpumpe
US10060425B2 (en) 2012-08-30 2018-08-28 Aesculap Ag Tube mount of a roller pump
US11692540B2 (en) 2017-11-08 2023-07-04 Oina Vv Ab Peristaltic pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5924019B2 (ja) * 2012-02-14 2016-05-25 株式会社ジェイ・エム・エス 半固形化物の注入装置
JP7326098B2 (ja) 2019-09-30 2023-08-15 富士フイルム株式会社 内視鏡用送液装置、送液チューブ及び送液装置本体

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2274897A1 (fr) * 1974-06-12 1976-01-09 Sidel Sa Dispositif distributeur-doseur de liquide
DE3338758A1 (de) * 1983-10-21 1985-05-09 Hubert Dipl.-Ing. Fuchs Vorrichtung zur perfusion von fluessigkeiten in koerperhoehlen
US4735558A (en) * 1986-04-08 1988-04-05 Staar Surgical Company Peristaltic pump latching mechanism

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114128A1 (de) * 1981-04-08 1982-10-28 Dr. Eduard Fresenius Chemisch-pharmazeutische Industrie KG Medizintechnik KG, 6380 Bad Homburg Rollpumpe fuer medizinische zwecke
US4909713A (en) * 1986-05-07 1990-03-20 Cobe Laboratories, Inc. Peristaltic pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2274897A1 (fr) * 1974-06-12 1976-01-09 Sidel Sa Dispositif distributeur-doseur de liquide
DE3338758A1 (de) * 1983-10-21 1985-05-09 Hubert Dipl.-Ing. Fuchs Vorrichtung zur perfusion von fluessigkeiten in koerperhoehlen
US4735558A (en) * 1986-04-08 1988-04-05 Staar Surgical Company Peristaltic pump latching mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006817A1 (fr) * 1993-08-31 1995-03-09 Valleylab, Inc. Cartouche de tete de pompe
EP1518572A1 (fr) * 2003-09-29 2005-03-30 Japan Servo Co. Ltd. Pompe péristaltique
DE102011081722A1 (de) * 2011-08-29 2013-02-28 Aesculap Ag Schlauchaufnahme einer Rollerpumpe
US10060425B2 (en) 2012-08-30 2018-08-28 Aesculap Ag Tube mount of a roller pump
US11692540B2 (en) 2017-11-08 2023-07-04 Oina Vv Ab Peristaltic pump

Also Published As

Publication number Publication date
DE4138729C1 (fr) 1993-01-28
JPH067372A (ja) 1994-01-18
JPH0646993B2 (ja) 1994-06-22

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