EP1758641A1 - Soupape de retenue - Google Patents

Soupape de retenue

Info

Publication number
EP1758641A1
EP1758641A1 EP05759029A EP05759029A EP1758641A1 EP 1758641 A1 EP1758641 A1 EP 1758641A1 EP 05759029 A EP05759029 A EP 05759029A EP 05759029 A EP05759029 A EP 05759029A EP 1758641 A1 EP1758641 A1 EP 1758641A1
Authority
EP
European Patent Office
Prior art keywords
hose connection
check valve
housings
connection housing
housing
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Withdrawn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
EP05759029A
Other languages
German (de)
English (en)
Inventor
Jan Willem Marinus Mijers
Brendan Hogan
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 EP1758641A1 publication Critical patent/EP1758641A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61M2039/242—Check- or non-return valves designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid
    • 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

Definitions

  • the invention relates to a check valve with a first hose connection housing and a second hose connection housing and with a membrane disc made of flexible material arranged between the two hose connection housings, which can be lifted off in the event of excess pressure in an inlet passage from an annular valve seat surrounding the inlet passage.
  • check valve is known, for example, from an earlier proposal by the applicant from EP 0 612 537.
  • the two hose connection housings are usually made of plastic by injection molding and the membrane disc is clamped between the two hose connection housings, whereupon the two hose connection housings are connected to one another by ultrasonic welding or gluing.
  • This type of production has certain disadvantages, since the hose connection housings produced have to be handled and assembled in a separate work step, which can damage the annular valve seat, for example.
  • the possible contamination of the parts before assembly also poses a problem, which is particularly due to the fact that such check valves are used to a large extent in medical technology. is extremely critical.
  • the connection of the two hose connection housings by means of ultrasound welding or gluing is not an optimal type of connection, since this often leads to leakage problems and therefore rejects are produced.
  • the object of the invention is to improve this known check valve in such a way that such problems can no longer occur.
  • this object is essentially achieved in that the two hose connection housings are connected to one another by injection molding in an injection mold.
  • the overmolding produced by overmolding which includes the corresponding areas of the hose connection housing, represents an absolutely safe and tight connection and can be produced with simple means.
  • the hose connection housings are made of plastic by injection molding. Together with the connection by overmolding, this offers the considerable advantage that such check valves are practically completely finished in the casting mold, so that neither contamination can occur nor damage to the valve seat during assembly.
  • the two lower mold halves of the molds in which the hose connection housing was injection molded are brought together after inserting the membrane disk and a respective upper mold half, which contains the cavity for the encapsulation, so that no manual activities are necessary to remove such valves one and the eject the same injection molding machine in which the hose connection housing was manufactured.
  • centering means are provided on the two hose connection housings. As a result, apart from the positioning of the associated mold parts, the exact arrangement of the hose connection housings with respect to one another is ensured.
  • the centering means can be an annular projection in the end face of the first hose connection housing and an annular groove in the end surface of the second hose connection housing, the projection engaging in the ring groove.
  • the invention can be further developed in that the extrusion coating is C-shaped in cross section and comprises laterally projecting edges of the two hose connection housings. This creates a stable and visually pleasing unit.
  • FIGURE 1 is a sectional view of a first check valve according to the invention.
  • FIGURE 2 is a view corresponding to FIG. 1 of a second embodiment.
  • the check valve 1 consists of a first hose connection housing 2 and a second hose connection housing 4, which are shown in more detail below explained manner are interconnected.
  • a membrane disk 6 made of flexible material, for example made of silicone, which can be lifted off from an annular valve seat 10 surrounding the inlet passage 8 in the event of overpressure in an inlet passage 8 and thereby releases a flow cross-section so that the controlled one Medium can flow from the inlet passage 8 via the valve seat 10 through openings 11 in the membrane disk 6 to the outlet passage 9.
  • the diaphragm disk 6 will return to the valve seat 10 safely and in minimal times, so that a backflow from the outlet passage 9 to the inlet passage 8 is excluded.
  • the two hose connection housings 2 and 4 in the two embodiments illustrated in FIGS. 1 and 2 are connected to one another by injection molding in an injection mold.
  • the two hose connection housings 2 and 4 are likewise produced by injection molding from plastic and have centering means which facilitate the assembly of the two hose connection housings 2 and 4 in the correct position.
  • the centering means consist of an annular projection 14 in the end face 16 of the first hose connection housing and an annular groove 18 in the end surface 20 of the second hose connection housing 4.
  • the annular projection 14 engages in the annular groove 18 in the assembled state.
  • the extrusion encapsulation 12 made of plastic is egg-shaped in cross-section and encompasses the two disk-shaped edges 22 and 24 of the two hose connection housings 2 and 4. It is obvious that this results in an absolute tight and clean connection of the two hose connection housings 2 and 4 is created.

Landscapes

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

Abstract

L'invention concerne une soupape de retenue comprenant un premier logement de raccord tubulaire (2), un deuxième logement de raccord tubulaire (4), et une membrane discoïde (6) qui est constituée d'un matériau souple et qui est située entre le premier et le deuxième raccord tubulaire. En cas de pression excessive dans un passage d'admission (8), cette membrane discoïde peut être retirée d'un siège de soupape (10) annulaire qui entoure le passage d'admission, les deux logements de raccord tubulaires (2, 4) étant reliés l'un à l'autre par surmoulage dans un moule de moulage par injection.
EP05759029A 2004-06-21 2005-06-20 Soupape de retenue Withdrawn EP1758641A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004009722U DE202004009722U1 (de) 2004-06-21 2004-06-21 Rückschlagventil
PCT/EP2005/006645 WO2005123177A1 (fr) 2004-06-21 2005-06-20 Soupape de retenue

Publications (1)

Publication Number Publication Date
EP1758641A1 true EP1758641A1 (fr) 2007-03-07

Family

ID=32921448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05759029A Withdrawn EP1758641A1 (fr) 2004-06-21 2005-06-20 Soupape de retenue

Country Status (4)

Country Link
US (1) US20070167058A1 (fr)
EP (1) EP1758641A1 (fr)
DE (1) DE202004009722U1 (fr)
WO (1) WO2005123177A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004009722U1 (de) * 2004-06-21 2004-08-26 Filtertek B.V. Rückschlagventil
DE102010022410A1 (de) * 2010-06-01 2011-12-01 Filtertek B.V. Rückschlagventil, insbesondere für medizinische Anwendungen
GB2531991B (en) * 2014-09-10 2020-07-22 Mayborn Uk Ltd Valve Assembly
US20200049288A1 (en) * 2018-08-13 2020-02-13 Invetech, Inc. Functionalized Unitary Molded Manifolds For Closed Fluid Handling Systems
DE102020100983B4 (de) 2020-01-16 2025-04-30 Alfmeier Präzision SE Rückschlagventil und Verfahren zur Herstellung eines Rückschlagventils
TR2023006470A2 (tr) * 2023-06-03 2023-09-21 Dilber Osman Entegre tahli̇ye yollu çek valf ve üreti̇m yöntemi̇

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623504A (en) * 1970-04-14 1971-11-30 Stewart Warner Corp Check valve assembly
US3794043A (en) * 1972-11-08 1974-02-26 Lanz Medical Prod Co Endotracheal tube with inflatable cuff and check valve
US4188978A (en) * 1972-11-27 1980-02-19 Plasto-Matic Valves, Inc. Valve mechanism
DE3327342A1 (de) * 1983-07-29 1985-02-07 Peter 7800 Freiburg Pedersen Vorrichtung zur erfassung und auswertung des druckes in der ballonmanschette eines geschlossenen trachealtubus
US4535820A (en) * 1984-05-24 1985-08-20 Burron Medical Inc. Normally closed check valve
JPS62186872A (ja) * 1986-02-14 1987-08-15 鳥取大学長 呼吸圧重畳式カフ圧調整装置
US4749003A (en) * 1987-01-22 1988-06-07 Filtertek, Inc. Center flow check valve
US4781674A (en) * 1987-01-30 1988-11-01 Vir Engineering Fluid flow control valve
US5277171A (en) * 1993-02-02 1994-01-11 Bradford-White Corporation Water heater heat trap
DE4304949C2 (de) * 1993-02-18 1996-07-18 Filtertek Sa Rückschlagventil für medizinische Anwendungen der Fluidtechnik
FR2776742B1 (fr) * 1998-03-30 2000-06-02 Medex Sa Perfectionnement pour valve a seuil
US5992462A (en) * 1998-10-28 1999-11-30 Vernay Laboratories, Inc. Disc type check valve
DE19929607C1 (de) * 1999-06-28 2000-11-23 Jan Willem Marinus Myers Zwei-Wege-Ventil, insbesondere für Flüssigkeitsspender
IT1311348B1 (it) * 1999-11-12 2002-03-12 Borla Ind Valvola di ritegno per linee medicali di infusione e simili.
DE202004009722U1 (de) * 2004-06-21 2004-08-26 Filtertek B.V. Rückschlagventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005123177A1 *

Also Published As

Publication number Publication date
WO2005123177A1 (fr) 2005-12-29
US20070167058A1 (en) 2007-07-19
DE202004009722U1 (de) 2004-08-26

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