EP3292307A1 - Schlauchkassette für eine peristaltische pumpe mit elastischen schenkeln - Google Patents
Schlauchkassette für eine peristaltische pumpe mit elastischen schenkelnInfo
- Publication number
- EP3292307A1 EP3292307A1 EP17777155.7A EP17777155A EP3292307A1 EP 3292307 A1 EP3292307 A1 EP 3292307A1 EP 17777155 A EP17777155 A EP 17777155A EP 3292307 A1 EP3292307 A1 EP 3292307A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cassette
- tube
- legs
- pump
- fixing elements
- 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.)
- Granted
Links
- 230000002572 peristaltic effect Effects 0.000 title abstract description 8
- 239000013013 elastic material Substances 0.000 claims abstract description 7
- 210000002414 leg Anatomy 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 229920012128 methyl methacrylate acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000012815 thermoplastic material Substances 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 210000000689 upper leg Anatomy 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims 2
- 239000004743 Polypropylene Substances 0.000 claims 2
- 239000004793 Polystyrene Substances 0.000 claims 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001839 endoscopy Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000002357 laparoscopic surgery Methods 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
Definitions
- the present invention relates to an improvement in a peristaltic pump tubing cartridge.
- the hose cassette is U-shaped and made of elastic material, so that the liquid-conveying hose segment can better enclose the roller wheel, whereby the pump power is improved.
- a cassette designed easier and cheaper to produce than prior art cassettes.
- peristaltic peristaltic pumps are commonly used as suction and irrigation pumps, especially in minimally invasive surgery. Such pumps are widely used in arthroscopy, laparoscopy, urology and hysteroscopy. In such applications, of course, ensuring biocompatibility and sterility is of particular importance. Furthermore, the suitability in daily operation is important: in particular the set-up time is of particular importance, d. H. the time medical staff must spend to prepare a fluid pump before use.
- EP 1820967 A1 describes a hose cassette with a cassette housing with two fixing elements arranged on the front side, wherein a pump tube segment runs between the two fixing elements and spans the roller wheel by inserting the cassette into the pump.
- the cassette already contains all tube connections. It can simply be inserted into the opening of the peristaltic pump and is thus ready to use.
- CONFIRMATION COPY Tube cartridges are used as disposable items, the reduction of manufacturing costs would also be desirable.
- the invention therefore relates to a tube cassette with a U-shaped
- legs are made of a tough, elastic material, preferably made of a thermoplastic plastic,
- a fixing each still has at least one hose as a supply line and the second fixing nor at least one hose as
- the special feature of the cartridge according to the invention compared to the cassettes of the prior art is that the two legs are connected to each other only at the base ( Figure 1). In this way, the legs can move away from each other by spreading apart. This possibility of spreading first facilitates the insertion of the cassette frame in the pump, more precisely: the wrapping of the roller wheel.
- the leg ends eg the fixing elements of the hose cassette according to EP 1820967 A1
- the legs can be spread during insertion to go back to the original distance in the operating position of the cassette ( Figure 2).
- the distance between the two fixing elements is usually increased by more than 40%, preferably by more than 80%.
- the tube cassette according to the invention which actually only consists of a U-shaped tube cassette frame, less material is required than in a classic cassette, as shown for example in EP 1820967.
- the hose cartridge frame according to the invention consists only of the base and the two legs.
- the cassette is made of a tough, elastic material, preferably of a thermoplastic material, such. As PVC, SBC, PA, PLA, ABS, MABS, PP, PS, PTFE, PET, PE or
- legs are deformable (e.g., spreadable), by selecting the material and the exact one
- the existing at the ends of the U-shaped cassette fixing elements are typically formed as a hollow body, which allow by means of appropriate fittings, the connection of hoses.
- an inflow or drain hose provided at each fixing.
- the pump tube segment is located between the fixing elements.
- the inlet and outlet hoses are of a different material than the pump tube segment.
- the pump tube segment may consist of highly flexible silicone, while the inlet and outlet hoses may consist of relatively inexpensive PVC.
- the sensors or membranes described below may be part of the fixing elements.
- Such fixing elements are described for example in EP1820967, to which reference is hereby made.
- the fixing elements merely fix a hose, so that the pump hose segment is formed between leg ends with the fixing elements. They provide in this way for the tension of the pump tube element in the operating position of the cassette and the necessary reversal of the flow direction of the liquid flow.
- the inner spacing of the fixing elements can be, for example, 5 to 8 cm.
- the pump hose segment extending between the fixing elements runs along a circular segment and spans at least an angle of 120 degrees, preferably at least 150 degrees, particularly preferably approximately 180 degrees. In special cases, the angle may exceed 180 degrees, e.g. if the
- Fixing elements are compressed in the operating position by corresponding guide elements of the pump.
- the entire cassette can be manufactured in a single operation as a flat injection-molded part.
- the injection-molded part contains at least two points where the material is formed in the sense of a film hinge, so that it can be folded without breaking to produce the U-shape ("folding cassette", see Figure 4.)
- the injection molded part includes latching devices that allow latching parts of the cassette folded into operative condition or welds are applied to increase stability
- the manufactured injection molded part already contains corresponding holes and
- Recesses and guide bars for the tubes are Recesses and guide bars for the tubes. If necessary, an increase in rigidity can be incorporated by means of corresponding shaping elements (eg ribs).
- the fixing can be molded during manufacture by injection molding or 3-D printing. Alternatively, they are made in a separate step and attached to the leg ends. Alternatively, the folding cassette can of course also be produced by 3-D printing.
- the cassette can of course also in the classical manner in one piece (see Figure 8) or be injected or printed in multiple pieces.
- At least one end face of the fixing element includes a flexible membrane (e.g., silicone, TPE or PVC). This can interact with inserted cartridge with a suitable force / displacement transducer and thus allow pressure measurement.
- a flexible membrane e.g., silicone, TPE or PVC.
- the hose legs can have predetermined breaking points, so that multiple use is not possible.
- the cassette contains information that the pump can read. It is information such as purpose, service or expiration date.
- the corresponding data can be stored on data carriers, eg in the form of a barcode, but also for example by an RFID chip or in another known manner. ever according to memory mode, the information is read out by radio waves or light.
- the cartridge contains a code to prevent multiple use.
- This code can be electronically stored, but also be realized by color or shape design.
- cassettes according to the invention also allow multiple tube segments to be contained in parallel, so that several hose lines can be pumped simultaneously.
- a pump and a cassette according to the invention simultaneously the inflow and outflow from a body cavity can be realized.
- the tube cassette, in particular the fixing elements can also further comprise
- a temperature measurement of the pumping liquid can be carried out by a corresponding temperature sensor.
- the type of liquid and its content of dissolved substances eg salts or sorbitol / mannitol
- the possibility of measuring air bubbles is possible, so that appropriate warnings are possible.
- the measurement of oxygen (O 2 ), or carbon dioxide (C0 2 ) content and / or other parameters is possible by installing appropriate sensors.
- the sensors are largely part of the pump:
- the temperature measurement via an infrared sensor in the pump can be made, provided that the tube cassette has an IR-transparent viewing window.
- the cassette may contain two electrodes with corresponding leads. By appropriate contacts on the pump then the electrical parameters can be measured.
- the tube cassette according to the invention can be used for aspirating liquids (water, fat, blood, etc.), but also for flushing body cavities, eg. B. in endoscopy. Due to the increased pumping capacity and counterpressure resistance compared to classic roller wheel pumps, is also one
- the tube cassette according to the invention can also be used in the wound therapy can be used in the cleaning of wounds. Also in the context of blood circulation (eg in dialysis, blood warming or oxygenation), the cassette can be used.
- blood circulation eg in dialysis, blood warming or oxygenation
- roller wheel pump required for operating the hose cassette can be used in the
- the pump contains, for example, in its housing one, the cartridge complementary cartridge slot. Helpful here guide elements, in particular
- Be guide rails which initially cause the required spreading of the legs and then re-merging when inserting the cassette. Locking elements facilitate holding the cassette in the operating position.
- the sensor elements eg the pressure sensor
- the insertion opening of the housing for the cassette can be form-coded to prevent errors in the introduction of the cassette.
- the basic idea according to the invention can also be realized by alternative embodiments.
- FIG. 7a shows an alternative embodiment in which
- Cassette legs do not need to be spread apart to optimally enclose the roller wheel.
- the legs contain articulated sections, so that the leg ends can deform inwardly.
- the train of the pump tube segment deforms the
- Figure 7b shows a similar embodiment with a hinge-like
- the distance between the two fixing elements is usually reduced by more than 30%, preferably by more than 60%, in special cases by more than 80%.
- FIG. 5 An exemplary embodiment of a cassette according to the invention is shown by way of example in FIG. 5:
- a folded cassette with the dimensions 146x86x30 mm, consisting of the thermoplastic SBC (Styrolux 656c, modulus of elasticity 1800 MPa, elongation at break 20%) with a wall thickness of 1.5 mm.
- the mean distance between the ends of the pumping segment A1 50 mm.
- the roller wheel must be with a
- Diameter of 60 mm and a thickness of 24 mm are overcome.
- the elasticity of the material and the special geometry of the cassette allow for a spread of cassette size A3 by more than 87%. Behind the roller wheel, the elastically deformed cassette returns to its original shape
- the pumping segment In order to produce a high pumping capacity and to ensure the self-sealing effect between roller wheel and pumping segment, the pumping segment must be sufficiently tensioned and the ends of the pumping segment must be at a distance smaller than the roller wheel diameter.
- the pump segment is thus stretched by about 25% of its length. The ends of the cassette are still supported to measure
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016009174.6A DE102016009174B3 (de) | 2016-07-29 | 2016-07-29 | Schlauchkassette für eine peristaltische Pumpe mit elastischen Schenkeln |
PCT/DE2017/000226 WO2018019320A1 (de) | 2016-07-29 | 2017-07-27 | Schlauchkassette für eine peristaltische pumpe mit elastischen schenkeln |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3292307A1 true EP3292307A1 (de) | 2018-03-14 |
EP3292307B1 EP3292307B1 (de) | 2019-02-27 |
Family
ID=59982219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17777155.7A Active EP3292307B1 (de) | 2016-07-29 | 2017-07-27 | Schlauchkassette für eine peristaltische pumpe mit elastischen schenkeln |
Country Status (7)
Country | Link |
---|---|
US (1) | US11098706B2 (de) |
EP (1) | EP3292307B1 (de) |
JP (1) | JP7220566B2 (de) |
CN (1) | CN107923384B (de) |
DE (1) | DE102016009174B3 (de) |
ES (1) | ES2728068T3 (de) |
WO (1) | WO2018019320A1 (de) |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272380U (de) * | 1988-11-17 | 1990-06-01 | ||
US4904168A (en) * | 1988-12-28 | 1990-02-27 | United Sonics, Inc. | Cassette assembly for ophthalmic surgery system |
FR2677711B1 (fr) * | 1991-06-12 | 1993-10-08 | Smh Management Services Ag | Pompe peristaltique. |
US5257917A (en) * | 1992-10-02 | 1993-11-02 | Cole-Parmer Instrument Company | Peristaltic pump having means for reducing flow pulsation |
US5403277A (en) * | 1993-01-12 | 1995-04-04 | Minnesota Mining And Manufacturing Company | Irrigation system with tubing cassette |
EP0672830B1 (de) * | 1994-02-16 | 1998-05-06 | Stöckert Instrumente GmbH | Schlauchfixierungsvorrichtung für Rollenpumpen |
JPH0960593A (ja) * | 1995-08-25 | 1997-03-04 | Mazda Motor Corp | チューブ押圧式ポンプ |
DE19960668C1 (de) * | 1999-12-15 | 2001-08-16 | W O M Gmbh Physikalisch Medizi | Schlauchkasette für eine peristaltische Pumpe |
DE10244090A1 (de) | 2002-09-23 | 2004-04-01 | Ismatec S.A. | Schlauchkassette für eine peristaltische Pumpe |
US20070104599A1 (en) * | 2003-09-26 | 2007-05-10 | Stephan Michels | Peristaltic pump |
JP2006002659A (ja) * | 2004-06-17 | 2006-01-05 | Seiko Epson Corp | チューブポンプおよび液体吐出装置 |
DE102006008325B4 (de) | 2006-02-20 | 2013-09-12 | W.O.M. World Of Medicine Ag | Schlauchkassette für eine peristaltische Pumpe |
US7841647B2 (en) * | 2006-11-15 | 2010-11-30 | Sika Technology Ag | Baffle assembly |
US8317492B2 (en) * | 2007-02-27 | 2012-11-27 | Deka Products Limited Partnership | Pumping cassette |
ITBO20080152A1 (it) * | 2008-03-07 | 2009-09-08 | Carpigiani Group Ali Spa | Pompa peristaltica. |
JP5397747B2 (ja) * | 2009-02-16 | 2014-01-22 | ニプロ株式会社 | チューブポンプ |
JP2012057526A (ja) | 2010-09-08 | 2012-03-22 | Sii Printek Inc | チューブポンプ及びそれを備えた液体噴射記録装置 |
EP2441484A1 (de) | 2010-10-13 | 2012-04-18 | Fresenius Kabi Deutschland GmbH | Pumpenmodul, Pumpenbasismodul und Pumpenssystem |
US9289110B2 (en) * | 2012-04-05 | 2016-03-22 | Stryker Corporation | Control for surgical fluid management pump system |
DE102012108052A1 (de) * | 2012-08-30 | 2014-03-06 | Aesculap Ag | Schlauchaufnahme einer Rollerpumpe |
-
2016
- 2016-07-29 DE DE102016009174.6A patent/DE102016009174B3/de not_active Expired - Fee Related
-
2017
- 2017-07-27 JP JP2018563829A patent/JP7220566B2/ja active Active
- 2017-07-27 ES ES17777155T patent/ES2728068T3/es active Active
- 2017-07-27 WO PCT/DE2017/000226 patent/WO2018019320A1/de active Application Filing
- 2017-07-27 US US15/752,092 patent/US11098706B2/en active Active
- 2017-07-27 CN CN201780002870.4A patent/CN107923384B/zh active Active
- 2017-07-27 EP EP17777155.7A patent/EP3292307B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2018019320A1 (de) | 2018-02-01 |
JP2019523359A (ja) | 2019-08-22 |
US20180238318A1 (en) | 2018-08-23 |
CN107923384A (zh) | 2018-04-17 |
EP3292307B1 (de) | 2019-02-27 |
DE102016009174B3 (de) | 2017-11-02 |
ES2728068T3 (es) | 2019-10-22 |
US11098706B2 (en) | 2021-08-24 |
CN107923384B (zh) | 2019-12-06 |
JP7220566B2 (ja) | 2023-02-10 |
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