EP2175924A1 - Soupape de retenue, en particulier pour applications médicales - Google Patents

Soupape de retenue, en particulier pour applications médicales

Info

Publication number
EP2175924A1
EP2175924A1 EP08785052A EP08785052A EP2175924A1 EP 2175924 A1 EP2175924 A1 EP 2175924A1 EP 08785052 A EP08785052 A EP 08785052A EP 08785052 A EP08785052 A EP 08785052A EP 2175924 A1 EP2175924 A1 EP 2175924A1
Authority
EP
European Patent Office
Prior art keywords
support
connection housing
hose connection
valve seat
check valve
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Withdrawn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
EP08785052A
Other languages
German (de)
English (en)
Inventor
Colm Carmody
Kieran Costello
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.)
Filtertek BV
Original Assignee
Filtertek BV
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 Filtertek BV filed Critical Filtertek BV
Publication of EP2175924A1 publication Critical patent/EP2175924A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A61M2039/2433—Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A61M2039/2433—Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
    • A61M2039/2446—Flexible disc
    • A61M2039/246—Flexible disc being fixed along all or a part of its periphery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7839—Dividing and recombining in a single flow path
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve

Definitions

  • the invention relates to a check valve, fertilize in particular for medical applications, with a first hose connection housing and a second hose connection housing and arranged between the two hose connection housing membrane disc of flexible material which at positive pressure in an input channel of the first hose connection housing of an annular, one with the input channel
  • the valve seat can be lifted off at an overflow in an outlet channel of the second hose connection housing and can be pressed onto the valve seat in minimal time, wherein the membrane disk is provided at its outer circumferential area with an annular bead which is located in mutually opposite annular grooves of the hose connection housing is received, the diaphragm disc is provided radially outwardly of the valve seat with openings leading to an outlet space and wherein the openings of the opposite wall of the z wide hose connection housing is provided with associated with the outlet channel recesses, which are separated by support surfaces for the membrane disc and are connected by narrow deep grooves with the outlet channel.
  • check valve is known from an earlier proposal of the applicant from DE-GM 20 2006 016 730.7.
  • Such medical check valves are needed in infusion systems, diagnostic equipment, intravenous tubing, and the like, such that such check valves must close very safely and the closing time must be only fractions of seconds, thereby eliminating any backflow of liquids contaminated with undesirable substances.
  • the manufacture must not only be extremely economical, but also statistically very accurate, since such valves can be used exclusively for medical applications as disposable articles and therefore have to be manufactured in an automated manner in very large numbers for cost reasons.
  • a valve of the type mentioned above improves a check valve, which is known from another earlier proposal of the applicant from DE-GM 20 2004 009 358.8, whereby it is achieved that it can no longer occur at higher pressures on the input side of the valve the openings provided in the membrane can create due to this pressure to the opposite wall of the outlet and thus closes the valve unintentionally.
  • This is achieved by the numerous support surfaces between the recesses, which ensure that, in any case, in the region of the openings in the membrane disk, a connection to the starting space is maintained, even if the membrane disk should rest completely against the support surfaces.
  • the object of the present invention is again to improve this valve of the type mentioned above with regard to high pressures and completely exclude damage or overstretching of the membrane disk.
  • this object is essentially achieved in that the support surfaces and the grooves in the middle of a projecting in the direction of the membrane disc, essentially flat support ends.
  • the advantage is achieved that in the most sensitive to overstretching region of the membrane disc is additionally centrally supported on the support at high pressures, so that overstretching in the direction of the recesses between the support surfaces can be excluded.
  • the support is circular. As a result, particularly favorable conditions are created with respect to the symmetry.
  • the membrane disc is provided with a protruding integral reinforcement.
  • the diaphragm touches the support in the outlet of the non-return valve. After relieving the pressure, it may happen that the membrane becomes snug on the support and delays the closing of the valve.
  • the ribs prevent sticking and thus help to close the valve as quickly as possible.
  • the invention can be further developed in that the circumference of the support is arranged within the radius of the opposite valve seat. This ensures a particularly trouble-free operation of the valve.
  • FIGURE 1 is a schematic sectional view in the plane of the grooves of an embodiment of the check valve according to the invention in the open state;
  • FIG. 2 a sectional view corresponding to FIG. 1 in the plane of the support surfaces of the valve according to FIG. 1 in the closed state, and
  • FIG. 1 is a schematic sectional view in the plane of the grooves of an embodiment of the check valve according to the invention in the open state;
  • FIG. 2 a sectional view corresponding to FIG. 1 in the plane of the support surfaces of the valve according to FIG. 1 in the closed state, and
  • FIGURE 1 is a schematic sectional view in the plane of the grooves of an embodiment of the check valve according to the invention in the open state;
  • FIG. 2 a sectional view corresponding to FIG. 1 in the plane of the support surfaces of the valve according to FIG. 1 in the closed state, and
  • FIG. 1 is a schematic sectional view in the plane of the grooves of an embodiment of the check valve according to the invention in the open state;
  • FIG. 2
  • FIGURE 3 is a perspective view of the hose connecting housing containing the support surfaces, which forms the output side of the valve.
  • the check valve 1 shown greatly enlarged in the drawings is particularly suitable for medical technology and can be used, for example, in pressure differences down to 0.002 bar.
  • the check valve 1 consists of a first hose connection housing 2 and a second hose connection housing 4, which are preferably made of a plastic by spraying. Between the two hose connection housings 2 and 4, a membrane disk 6 is arranged, which is made of a flexible plastic, for example silicone.
  • An input channel 8, which opens into an input space 10, is formed in the first hose connection housing 2.
  • the input space 10 surrounds an annular valve seat 12, against which the membrane disk 6 is biased.
  • the membrane disk is formed with a continuously closed central part, which makes it possible that considerable tensile forces can be transmitted radially from the inside to the outside and vice versa.
  • the membrane disk 6 is provided with an integrally formed annular bead 14, which is produced, for example, by injection molding on the membrane disk 6.
  • the first hose connection housing 2 contains an annular groove 16 in its end face, which faces an annular groove 18 in the second hose connection housing in the assembled state.
  • the annular bead 14 is received during the assembly of the two hose connection housing 2 and 4 in the mutually opposite annular grooves 16 and 18 and thereby simultaneously biased against the valve seat 12. As can be seen from FIGS.
  • the membrane disk 6 has, radially outside the valve seat 12, openings 20 which are arranged on a radius which allows an annular space 21 located radially outside the valve seat 12 in the first hose connection housing 2 to have an outlet space 22 is connected in the second hose connection housing 4, wherein the outlet space 22 is in communication with the outlet channel 24 of the second hose connection housing 4.
  • the recesses 28 are separated from each other by support surfaces 30 for the membrane disk 6, wherein the recesses 28 are connected by narrow deep grooves 32 with the outlet channel 24.
  • the support surfaces 30 and the grooves 32 in the middle terminate at a support 50 projecting in the direction of the membrane disk 6, which has a substantially flat surface.
  • the support 50 is circular in shape, although other shapes are also possible.
  • the membrane disc 6 has a reinforcement 52, which in the drawing on the opposite side of the support 50 projects in the direction of the support 50, but may also lie on the other side of the membrane disc 6.
  • the protruding reinforcement 52 is likewise integrally formed with the membrane disk 6, for example by injection molding.
  • small ribs 56 are formed, which project beyond the surface 54 of the support 50 and lead to the outer periphery of the support 50. In the illustrated embodiment, the ribs 56 are extended into the support surfaces 30.
  • the ribs 56 intersect in a star shape in the center of the support 50. Further, the circumference of the support 50 is within the radius of the opposite valve seat 12th
  • overstretched membranes of this type tend to rapidly return to their original shape due to the hysteresis effect.
  • the construction of the present invention ensures support of the membrane and thereby prevents its overstretching at the relevant pressures. This feature therefore ensures rapid closure of the valve while relieving pressure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Biomedical Technology (AREA)
  • Anesthesiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

L'invention concerne une soupape de retenue (1), en particulier pour applications médicales, comprenant un premier boîtier de raccord de tuyau (2) et un deuxième boîtier de raccord de tuyau (4) et un disque à membrane (6) disposé entre les deux boîtiers de raccord de tuyau (2, 4), qui est constitué d'un matériau flexible, peut être enlevé lors d'une surpression dans un canal d'entrée (8) d'un siège de soupape (12) et peut être comprimé sur le siège de soupape (12) lors d'une surpression dans un canal de sortie (24). Le disque à membrane (6) est muni d'un tore (14) sur sa zone périphérique extérieure, qui est reçu dans une rainure annulaire (16, 18) opposée du boîtier de raccord de tuyau (2, 4). A l'extérieur du siège de soupape (12), le disque à membrane (6) est muni, dans le sens radial, d'orifices conduisant vers une chambre de sortie (22), la paroi (26) du deuxième boîtier de raccord de tuyau (4) opposée aux orifices (20) est munie de cavités (28) reliées au canal de sortie (24), qui sont séparées les unes des autres par des surfaces d'appui (30) pour le disque à membrane (6) et sont reliées au canal de sortie (24) par des rainures de faible profondeur (32). Les surfaces d'appui (30) et les rainures (32) se terminent au centre au niveau d'un support (50) essentiellement plan faisant saillie en direction du disque à membrane (6).
EP08785052A 2007-08-13 2008-07-24 Soupape de retenue, en particulier pour applications médicales Withdrawn EP2175924A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202007011322 2007-08-13
DE200720012680 DE202007012680U1 (de) 2007-08-13 2007-09-11 Rückschlagventil, insbesondere für medizinische Anwendungen
PCT/EP2008/006099 WO2009021605A1 (fr) 2007-08-13 2008-07-24 Soupape de retenue, en particulier pour applications médicales

Publications (1)

Publication Number Publication Date
EP2175924A1 true EP2175924A1 (fr) 2010-04-21

Family

ID=38885420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08785052A Withdrawn EP2175924A1 (fr) 2007-08-13 2008-07-24 Soupape de retenue, en particulier pour applications médicales

Country Status (4)

Country Link
US (1) US8291936B2 (fr)
EP (1) EP2175924A1 (fr)
DE (1) DE202007012680U1 (fr)
WO (1) WO2009021605A1 (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7435236B2 (en) 2003-06-27 2008-10-14 Navilyst Medical, Inc. Pressure actuated valve with improved biasing member
US7600530B2 (en) 2004-08-09 2009-10-13 Medegen, Inc. Connector with check valve and method of use
US10478607B2 (en) 2004-08-09 2019-11-19 Carefusion 303, Inc. Connector for transferring fluid and method of use
US8257321B2 (en) * 2008-05-21 2012-09-04 Navilyst Medical, Inc. Pressure activated valve for high flow rate and pressure venous access applications
CN102245760A (zh) 2008-07-07 2011-11-16 牛津纳米孔技术有限公司 酶-孔构建体
US8007468B2 (en) 2009-07-13 2011-08-30 Navilyst Medical, Inc. Method to secure an elastic component in a valve
EP2622343B1 (fr) 2010-10-01 2016-01-20 Oxford Nanopore Technologies Limited Appareil d'analyse biochimique et vanne rotative
GB2484924A (en) * 2010-10-25 2012-05-02 Amirim Products Dev & Patents Ltd An on line drip irrigation emitter having an inlet filtering dvice
EP2637732A4 (fr) * 2010-11-11 2015-01-14 Chimden Medical Pty Ltd Soupape pour empêcher de l'air d'entrer dans un circuit intraveineux
DE202011004671U1 (de) * 2011-03-31 2011-06-09 Bürkert Werke GmbH, 74653 Membranventil
GB2492955A (en) * 2011-07-13 2013-01-23 Oxford Nanopore Tech Ltd One way valve
CN102910357B (zh) * 2011-08-02 2016-06-01 萧兆维 单向阀及液体容器
US9551338B2 (en) 2011-09-15 2017-01-24 Oxford Nanopore Technologies Ltd. Pump
EP2702893A1 (fr) * 2012-08-31 2014-03-05 Kao Germany GmbH Soupape, cuvette pour recevoir et/ou mélanger des fluides, utilisation d'une cuvette et procédé pour recevoir et/ou mélanger des fluides
EP2890267B1 (fr) * 2012-08-31 2018-06-13 Kao Germany GmbH Cuvette pour recevoir et/ou mélanger des fluides, utilisation et procédé
GB2510093A (en) 2012-10-04 2014-07-30 Owen Mumford Ltd Pen injector with a mechanism for expelling therapeutic material by negative pressure
US9370651B2 (en) 2013-03-13 2016-06-21 Carefusion 303, Inc. Needleless connector with reduced trapped volume
US9144672B2 (en) 2013-03-13 2015-09-29 Carefusion 303, Inc. Needleless connector with compressible valve
US9089682B2 (en) 2013-03-14 2015-07-28 Carefusion 303, Inc. Needleless connector with support member
US9278205B2 (en) 2013-03-13 2016-03-08 Carefusion 303, Inc. Collapsible valve with internal dimples
CA2809504C (fr) * 2013-03-15 2014-07-22 Westport Power Inc. Clapet antiretour avec temps de reponse ameliore
US10610677B2 (en) * 2014-05-19 2020-04-07 Celeste V. Bonham Urological system that includes connector with integrated non-return check valve for extension tubing and urology collection systems
EP3021018A1 (fr) * 2014-11-11 2016-05-18 Kao Germany GmbH Soupape, contenant pour recevoir et/ou mélanger des fluides, utilisation d'un contenant et procédé pour recevoir et/ou mélanger des fluides
CN105498025A (zh) * 2016-02-22 2016-04-20 上海康德莱医疗器械股份有限公司 一种带单向功能的无针加药接头
DE102017010071A1 (de) * 2016-11-02 2018-05-03 Mann+Hummel Gmbh Einheit zum Regeln oder Steuern eines Fluiddrucks
DE102016013008A1 (de) * 2016-11-02 2018-05-03 Mann + Hummel Gmbh Einheit zum Regeln oder Steuern eines Fluiddrucks
WO2019011410A1 (fr) * 2017-07-11 2019-01-17 Microfab Service Gmbh Micro-clapet anti-retour et système comprenant plusieurs micro-clapets anti-retour et procédé pour la fabrication de ces derniers
DE102020123142B4 (de) * 2020-09-04 2023-06-29 Ebm-Papst Landshut Gmbh Rückstromschutzvorrichtung für ein Heizgerät und Heizgerät mit einer Rückstromschutzvorrichtung
US11187333B1 (en) 2020-09-29 2021-11-30 Carefusion 303, Inc. Color changing and pressure sensing check valves

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GB690897A (en) * 1951-02-26 1953-04-29 Hymatic Eng Co Ltd Improvements relating to non-return valves
US4141379A (en) 1977-05-16 1979-02-27 Cutter Laboratories, Inc. Check valve
EP0031988A1 (fr) * 1980-01-04 1981-07-15 Bruce De Lorenzo Mécanisme pour vanne
US7673653B2 (en) * 2004-06-17 2010-03-09 Filtertek Inc. Check valve
ATE366886T1 (de) * 2005-03-18 2007-08-15 Freudenberg Carl Kg Rückschlagventil

Non-Patent Citations (1)

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Title
See references of WO2009021605A1 *

Also Published As

Publication number Publication date
DE202007012680U1 (de) 2008-01-03
WO2009021605A1 (fr) 2009-02-19
US20110108147A1 (en) 2011-05-12
US8291936B2 (en) 2012-10-23

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