• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    UNIDIRECTIONAL VALVE FOR MEDICAL LINES The present invention relates to a unidirectional valve for medical infusion lines and the like comprising a first tubular connector (2) and a second tubular connector (3), which define, respectively, an upstream passage ( 4) and a downstream passage (5), which are coaxial and placed transversely between a diaphragm (6) made of elastically deformable material cooperating in a fluid-tight manner with an annular base (14) to keep the valve normally closed. A filter (15; 25; 35), integrated in the valve, is fixed axially and blocked between the first tubular connector (2) and the diaphragm (6).
    公开号:BR102013016454B1
    申请号:R102013016454-2
    申请日:2013-06-26
    公开日:2021-03-09
    发明作者:Gianni Guala
    申请人:Industrie Borla S.P.A.；
    IPC主号:
    专利说明:

    Field of the Invention
    [0001] The present invention relates to one-way valves for medical lines, for example, infusion lines and the like, of the type comprising a body formed by a first tubular connector and a second tubular connector that define, respectively, a passage to upstream and downstream passage, which are coaxial and placed transversely between a diaphragm made of elastically deformable material, which cooperate in a fluid-tight manner with a fixed annular valve to keep the unidirectional valve normally closed. A predetermined fluid pressure in the upstream passage produces an elastic displacement or deformation of the diaphragm and, consequently, the opening of the valve, that is, the opening of the communication between the upstream passage and the downstream passage.
    [0002] Valves of this type are used, for example, as check valves, which are intentionally designed to open when the pressure in the upstream passage exceeds a relatively modest predetermined threshold value, and then to close again quickly in order to prevent, with the maximum degree of safety, any reflux from the downstream passage to the upstream passage when the pressure in the last one falls below the threshold value again, or otherwise in the case of a minimum overpressure within the downstream passage. Prior Art
    [0003] From patent documents Nos. EP-1099457B1, EP-1093828B1 and EP-1946793A1, all of which are deposited in the name of the present applicant, there are known one-way valves of the type specified above, in which the annular valve base is defined by a tapered wall of the first connector tubular, diverging towards the second tubular connector, and the diaphragm consists of the lower wall of a cup-shaped element, the outer peripheral edge of which is normally pressed in fluid-tight contact against the base of the annular valve under an axial thrust exerted by the side wall of the cup-shaped element. During operation, when the pressure inside the upstream passage reaches the aforementioned predetermined value, an axial displacement of the bottom wall of the cup-shaped element is produced in the direction of the second tubular connector, as a result of which the corresponding outer peripheral edge it contracts radially, moving away from the annular valve base with a high degree of readiness and proximity to the unidirectional valve opening.
    [0004] In medical infusion line applications, a filter is usually provided to filter out any possible impurities contained in the fluid that passes through the valve. Traditionally, the filter consists of a separate element from the valve, placed along the line upstream of the first tubular connector, or even a filter body inserted into the upstream passage defined by the first tubular connector mentioned above.
    [0005] Both solutions show that the production of medical lines is far from practical and is somewhat complicated.
    [0006] From document No. WO-2010/107597, a one-way valve is known of the type specified above, in which the filter is integrated within the body and consists of a permeable membrane placed transversely and carried by a peripheral ring engaged with adjustment of interference or trigger adjustment on an internal annular flange of the fixed body upstream of the valve base in relation to the direction of flow through the valve.
    [0007] The above adjustment does not guarantee the necessary filter retention stability, which can be easily disengaged from the body flange, with the consequent risk of opening flow paths without any filtration, and even displacing the elastic diaphragm of the base. valve to accidentally open the valve. Summary of the Invention
    [0008] The objective of the present invention is to overcome the above disadvantage, and that objective is achieved thanks to the fact that the one-way valve is of the type defined in the pre-characterizing part of claim 1, the peculiar characteristic of which rests on the fact that the annular element of the filtering membrane is axially fixed and locked between the first and the second tubular connectors, and is formed with said annular valve base. Brief Description of Drawings
    [0009] The invention will now be described in detail with reference to the accompanying drawings, which are provided simply as a non-limiting example and in which: - Figure 1 is a schematic view in axial section of a one-way valve according to a first embodiment of the invention; Figure 2 is an exploded view of the valve in figure 1; - Figure 3 is a view similar to that of figure 1, which shows a second embodiment of the invention; - Figure 4 is a view similar to that of figure 1, which shows a third embodiment of the invention; and - Figure 5 is an exploded view of the valve of figure 4. Detailed Description of the Invention
    [00010] With initial reference to figures 1 and 2, reference number 1 designates as a whole the body of a tubular connector for tube-to-tube connection of a medical line for infusion, transfusion and the like. It should be noted that the connector can be pre-arranged, in a manner known to you, for luer-to-tube connections, or even tube-to-luer connections, or luer-a-luer connections, or other types of connections normally used in medical lines.
    [00011] The connector body 1 comprises, in a manner generally known to you, for example, from the document already cited No. EP-1946793A1, a first tubular connector 2 and a second tubular connector 3, both of which are normally made of a suitable molded thermoplastic material, permanently joined axially, with the modalities clarified in what follows.
    [00012] The first and second tubular connectors 2, 3 define, respectively, an upstream passage or inlet passage 4 and a downstream passage or exit passage 5, which can be connected to respective sections of tubing of the medical line.
    [00013] Placed between the upstream passage 4 and the downstream passage 5 is a one-way valve, the opening / closing element of which, placed within an enlarged portion 9 of the tubular connector 3 coaxially with the latter, consists of an element cup-shaped 6, comprising a circular bottom wall 7 and a skirt or side wall 8 and is conveniently made of a single piece of soft elastomeric material, for example, silicone rubber.
    [00014] The free edge 8a of the skirt 8 rests on a radial arrangement of transverse projections 10 formed at the base of the enlarged portion 9 and delimits respective radial channels that communicate on one side with the restricted central passage 11, which is in turn in communication with the downstream passage 5, and on the other side with peripheral axial passages 12 designed to be bonded in communication, in the condition of opening of the opening / closing element 6, with the upstream passage 4. Preferably, the resting surface between the free edge 8a of the skirt 8 and the sectors 10 are provided, according to what is contemplated in the document already cited No. EP-1946793A1, only in angular portions separated by portions that do not provide a rest.
    [00015] The edge of the opening / closing element 6 between the bottom wall 7 and the skirt 8, which is designated 13, constitutes the sealing element of the opening / closing element 6, which cooperates with a valve base ring 14 with conical surface. In the condition of closing the valve (shown in figure 1), the skirt 8 is subjected to a predetermined elastic axial preload and presses the edge 13 in fluid tight contact against the base of the valve 14 in order to interrupt the communication between the axial passages 12, and then the downstream passage 5, and the upstream passage 4. When an overpressure of a degree greater than a pre-established threshold value is produced within the upstream passage 4, the axial displacement of the lower wall 7 of the opening / closing element 6 in the direction of the tubular connector 3 causes the separation between the edge 13 and the base of the valve 14, placing the upstream passage 4 in communication with the downstream passage 5.
    [00016] According to the peculiar characteristic of the invention, the connector 1 incorporates, in an integrated way, a filter placed through the flow line between the upstream passage 4 and the downstream passage 5, which is axially blocked between the first tubular connector 2 and the second tubular connector 3, upstream of the opening / closing element 6 of the valve in relation to the flow through the valve body 1.
    [00017] In the embodiment shown in figures 1 and 2, the filter consists of a transverse membrane 15, made of an appropriate permeable filtering material, the outer peripheral edge of which is fixed on a radially internal flange 17 of an annular element 18 placed between tubular connectors 2 and 3. The surface of the flange 17 opposite the filter membrane 15 defines the base of the annular valve 14.
    [00018] On the side opposite the flange 17, the membrane 15 is supported frontally on the annular projection 16 of the tubular connector 2, projecting axially towards the tubular connector 3. The annular element 18 has a peripheral flange 19 for frontal coupling to a radially external flange 20 of the tubular connector 2, and a stepped sidewall 21 for coupling to a complementary stepped inner surface 22 of the enlarged portion 9 of the tubular connector 3. Attachment between flanges 19 and 20 on one side and stepped walls 21 and 22 on the other side it can be obtained through ultrasonic welding, bonding or any other suitable system.
    [00019] The central part of the membrane filter 15 furthermore rests against an internal axial annular projection 23 of the tubular connector 2 and faces a restricted end portion 24 of the inlet passage 4.
    [00020] The valve connector variant according to the invention illustrated in figure 3 is generally similar to the modality described above, and here only the differences will be described in detail, using the same reference numbers for parts that are identical or similar.
    [00021] In the above variant, the annular element of the filter membrane 15, designated 25, is axially locked in an annular base 26 formed between the annular flange 20 of the tubular connector 2 and a complementary annular flange 27 of the tubular connector 3, which in this case they are directly attached to each other. The annular element 25 is conveniently welded within the flange 27, which is in turn welded to the flange 20.
    [00022] The filter membrane 15 is also in this case inserted peripherally between the flange 17 of the annular element 25 and the annular projection 16 of the tubular connector 2, and the base of the valve 14 for the opening / closing element 6 is also formed by the surface of the flange 17 of the annular element 25 opposite to that on which the peripheral edge of the membrane 15 is fixed.
    [00023] In the variant shown in figures 4 and 5, where likewise the same reference numerals are used to designate parts that are identical or similar to those already described with reference to the previous modalities, the filter is formed by a body made of material molded plastic 35 having a perforated wall 36 and made of a single piece with an intermediate annular element 37 axially blocked between the radially external annular flange 20 of the first tubular connector 2 and the second tubular connector 3.
    [00024] The perforated wall 36 is formed with a series of micro-slits 38 separated by intermediate septum 39. Alternatively, the aforementioned perforated wall 36 may have a microgrid conformation.
    [00025] In the case of the illustrated example, the perforated wall 36 has a generally tapered shape converging towards the entrance passage 4 and faces a wall 40 having a tapered shape complementary to the first tubular connector 2. Its tip protrudes in towards the restricted terminal portion 24 of the inlet passage 4.
    [00026] Also in this case, the intermediate annular element 37 forms the annular valve base 14 for diaphragm 6 and has a peripheral flange 41 for frontal coupling with the radially external annular flange 20 of the first tubular connector 2. Its side wall is also formed with steps 42 for coupling to the stepped inner surface 22 of the second tubular connector 3.
    [00027] It should be noted that the perforated wall 36 of the filter body 35 may have a surface geometrically different from that illustrated; for example, it could be spherical.
    [00028] Obviously, the details of construction and the modalities can vary widely in relation to what has been described and illustrated here, without thereby departing from the scope of the present invention as defined in the subsequent claims.
    权利要求:
    Claims (12)
    [0001]
    1. One-way valve for medical infusion lines and the like comprising a body (1) having a first tubular connector (2) and a second tubular connector (3), which define, respectively, an upstream passage (4) and a passage downstream (5) coaxial to each other and placed transversely between what is a diaphragm (6) made of elastically deformable material cooperating in a fluid tight manner with an annular valve base (14) to keep said valve normally closed , wherein a predetermined pressure of the fluid in said upstream passage (4) produces a displacement or elastic deformation of said diaphragm (6) and consequent opening of said valve, said valve being provided with an integrated filter inside the body (1 ) and including a permeable membrane (15; 35) carried by an annular element (18; 25; 37) and fixed between said first tubular connector (2) and said diaphragm (6), said valve being characterized by the fact that that said annular element (18; 25; 37) is axially fixed and locked between said first and said second tubular connectors (2, 3) and is formed with said annular valve base (14).
    [0002]
    2. Valve according to claim 1, characterized in that said annular element (18; 25; 37) is axially blocked between a radially external annular flange (20) of said first tubular connector (2) and the second connector tubular (3).
    [0003]
    Valve according to claim 2, characterized by the fact that said membrane (15) is peripherally fixed between a radially internal annular projection (16) of said first tubular connector (2) and a radially internal flange (17) of the said annular element (18; 25).
    [0004]
    Valve according to claim 2 or claim 3, characterized in that said annular element (18) has a peripheral flange (19) for frontal coupling with said radially external annular flange (20) of said first connector tubular (2), and a stepped sidewall (21) for attaching to a complementary stepped inner surface (22) of said second tubular connector (3).
    [0005]
    Valve according to claim 1, characterized by the fact that said annular element (25) is blocked within an annular base (26) formed between a radially external annular flange (20) of said first tubular connector (2) and a complementary annular flange (27) of said second tubular connector (3), which are directly attached to each other.
    [0006]
    6. Valve according to claim 1, characterized by the fact that said filter is formed by a body made of molded plastic material (35) having a perforated wall (36) and made of a single piece with said annular element ( 37) which is axially locked between a radially external annular flange (20) of said first tubular connector (2) and the second tubular connector (3).
    [0007]
    Valve according to claim 6, characterized by the fact that said perforated wall (36) is formed with a series of micro-slits (38) separated by an intermediate septum (39).
    [0008]
    Valve according to claim 6 or claim 7, characterized in that said perforated wall (36) has a generally tapered shape converging towards said inlet passage (4).
    [0009]
    9. Valve according to claim 8, characterized by the fact that said perforated wall (36) faces a wall (40) having a conical shape complementary to said first tubular connector (2) and protrudes towards a restricted end portion (24) of said inlet passage (4).
    [0010]
    10. Valve according to claim 6, characterized by the fact that said intermediate annular element (37) has a peripheral flange (41) for frontal coupling with a radially external annular flange (20) of said first tubular connector (2) , and a stepped side wall (42) for coupling to a complementary stepped inner surface (22) of said second tubular connector (3).
    [0011]
    11. Valve according to any one of the preceding claims, characterized by the fact that said diaphragm (6) consists of the lower wall (7) of a cup-shaped element (6), the outer peripheral edge (13) of the which is normally pressed in fluid-tight contact against said annular valve base (14) under the action of an axial thrust exerted by the side wall (8) of said cup-shaped element (6).
    [0012]
    Valve according to claim 11, characterized in that the side wall (8) of said cup-shaped element (6) has a free edge (8a) placed resting against a grooved transverse surface of said second tubular connector (3) defined by a plurality of radial projections (10) angularly separated by angular portions that do not provide a rest.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP2679273B1|2018-07-11|
    CN103511685A|2014-01-15|
    HRP20181177T1|2018-09-21|
    EP2679273A1|2014-01-01|
    DK2679273T3|2018-10-29|
    AU2013206508A1|2014-01-16|
    PT2679273T|2018-07-24|
    CA2818137A1|2013-12-27|
    US20140005612A1|2014-01-02|
    NZ612448A|2014-10-31|
    ES2681819T3|2018-09-17|
    MX340554B|2016-07-14|
    CA2818137C|2019-07-09|
    BR102013016454A2|2015-07-14|
    ZA201304520B|2015-05-27|
    CN103511685B|2017-05-31|
    SG10201510567YA|2016-01-28|
    PL2679273T3|2019-01-31|
    JP2014013074A|2014-01-23|
    US9352086B2|2016-05-31|
    ITTO20120575A1|2013-12-28|
    MX2013006928A|2013-12-26|
    AU2013206508B2|2017-12-07|
    JP6165520B2|2017-07-19|
    RS57887B1|2019-01-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    DE3145320C2|1981-11-14|1987-03-19|Biotest-Serum-Institut Gmbh, 6000 Frankfurt, De|
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    CN201880208U|2010-11-23|2011-06-29|广州晟威医疗器械有限公司|Medical check valve|US9421354B2|2013-01-02|2016-08-23|Illinois Tool Works Inc.|Check valve with integrated filter|
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    KR101532413B1|2015-04-17|2015-06-30|고종원|Disposable syringe having safety filter function|
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    TWI580878B|2016-07-19|2017-05-01|科際精密股份有限公司|One way valve assembly|
    SG11201901267WA|2016-08-16|2019-03-28|Fisher & Paykel Healthcare Ltd|Pressure regulating valve|
    KR101833488B1|2017-03-09|2018-03-02|메디라인액티브코리아|Filter structure for high pressure infusion line including check valve|
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    KR101888473B1|2017-08-11|2018-08-16|가이버|Filter for liquid line used for medical use with filtration function and reverse flow shutoff function|
    KR101833729B1|2017-10-31|2018-03-02|이정민|a filter of injection device for medical use|
    US10591932B2|2017-11-08|2020-03-17|Carefusion Corporation|Diaphragm check valve|
    KR102226329B1|2020-03-12|2021-03-11|메디라인액티브코리아|Stacking structure for filter sheet of intravenous filter|
    法律状态:
    2015-07-14| B03A| Publication of an application: publication of a patent application or of a certificate of addition of invention|
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-15| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-12-08| B09A| Decision: intention to grant|
    2021-03-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/06/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    IT000575A|ITTO20120575A1|2012-06-27|2012-06-27|UNIDIRECTIONAL VALVE FOR MEDICAL INFUSION AND SIMILAR LINES|
    ITTO2012A000575|2012-06-27|
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