• 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:
    FLOW SYSTEM FOR MEDICAL LINES. The present invention relates to a flow system for medical lines that comprises a flow component (1) having a main duct (2) and at least one lateral tubular fitting (3) with a Luer-type female cone (4) which communicates with the main duct (2) through a valve (8), which includes a transverse diaphragm (10) normally maintained in fluid hermetic contact against an annular valve base (12) of the lateral tubular fitting (3), which can be moved away from it to an open position after the insertion of a male Luer fluid introducing cone (H) into the lateral tubular fitting (3). The diaphragm (10) is pre-arranged to be pushed into the opening position directly by the introducer (H), and the lateral tubular fitting (3) is configured in such a way that it can be coupled in a fluid-tight mode with the introducer (H) ) before the last one comes into contact with the diaphragm (10).
    公开号:BR112015000200B1
    申请号:R112015000200-5
    申请日:2013-06-11
    公开日:2021-02-09
    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
    [001] The subject of the present invention is a flow system for medical lines, in particular for hemodialysis, of the type comprising a flow component having a main duct for a main fluid and at least one lateral tubular fitting with a female cone of the type Luer that communicates with the main duct through a valve. PREVIOUS TECHNIQUE
    [002] A flow component of the type defined above is known from European patent No. EP-B-1661599 deposited in the name of the present applicant, in which the valve is the so-called anti-drain valve, including a diaphragm constituted by the wall bottom of a bowl-shaped element made of elastically deformable material, the outer peripheral edge of which is normally kept in fluid hermetic contact against an annular valve base of the lateral tubular fitting. As also described in patent No. EP-B- 1093828, which is also deposited in the name of the present applicant, the sealing edge of said valve can be moved away from the corresponding annular valve base, to an open position , then the insertion of a male Luer-type fluid introducing cone into the female Luer-type cone of the lateral tubular fitting. It is therefore a two-way valve of the so-called "Luer-activated" type, the opening of which is controlled mechanically, rather than simply by the pressure of the fluid introduced into the lateral tubular fitting.
    [003] Mechanical activation is usually obtained in the case of valves of this type, with the help of additional components. For example, from Italian Patent No. IT-B-1291508, which is also deposited in the name of the present applicant, the opening of a diaphragm valve obtained as a result of the insertion of the male Luer fluid-introducing cone inside a female cone fitting of the Luer type it is obtained with the help of an auxiliary tubular sliding element that is axially movable within the socket and is located against the diaphragm of the valve. The opening of the valve is thus obtained as a result of the axial thrust applied to the diaphragm by the auxiliary sliding element, which is in turn moved by the Luer-type male introducer cone.
    [004] A similar solution is described in document No. US-5, 565, 938A.
    [005] The said arrangement, in addition to being relatively complicated, may lead to the risk of the valve being opened by the auxiliary slide element before the Luer-type male introducing cone provides a hermetic seal with the Luer-type female cone of the tubular fitting , with consequent contamination problems and fluid leakage. SUMMARY OF THE INVENTION
    [006] The purpose of the present invention is to overcome the above inconvenience and provide a flow system for medical lines of the type defined in the pre-characterizing part of claim 1 (and generally corresponding to what is described and illustrated in the European patent already mentioned No. EP-B-1661599), in which the opening of the valve with the insertion of the fluid introducer occurs in a precise and reliable way and without any risk of contamination.
    [007] According to the present invention, said objective is achieved thanks to the fact that the valve diaphragm is pre-arranged to be pushed towards the aforementioned opening position as a result of the direct contact of the thrust by the male cone Luer-type fluid introducer and the fact that the lateral tubular fitting is configured in such a way as to engage in a fluid-tight mode with the aforementioned introducer before the latter comes into contact with the aforementioned diaphragm.
    [008] In accordance with a preferred embodiment of the present invention, the lateral tubular fitting is produced from an elastic material of relative compliance and is expandable elastically conveniently in a radial direction following the fluid hermetic coupling of the above fluid introducer. mentioned to the Luer type female cone of the lateral tubular fitting.
    [009] The radial expansion of the lateral tubular socket can be obtained in a convenient way, contemplating that its lateral wall is locally-axially stretched. BRIEF DESCRIPTION OF THE DRAWINGS
    [0010] The present invention will now be described in detail with reference to the accompanying drawings, which are provided only by means of non-limiting examples in which: Figure 1 is a schematic perspective view of a flow system for medical lines according to with the present invention; Figure 2 is a top plan view on an enlarged scale of the system of Figure 1; Figure 3 is a longitudinal sectional view according to line III-III in figure 2; Figure 4 is a sectional view according to line IVIV in figure 3; Figure 5 is a perspective view of the open / close member of the flow component anti-siphon valve; Figure 6 is an elevation view of the lateral tubular fitting of the flow member; e Figure 7 is an axial section view according to line VII-VII in figure 6. DETAILED DESCRIPTION OF THE PRESENT INVENTION
    [0011] The flow system according to the present invention shown in the drawings can be applied in particular to the medical line of hemodialysis.
    [0012] The flow system basically comprises a flow component 1 having a main duct 2 designed in use to be traversed by the flow of a main fluid in the direction indicated by arrow A, and a lateral tubular fitting 3 that extends in a direction perpendicular to duct 2 for the introduction of a secondary fluid in the latter.
    [0013] The lateral tubular insert 3 is formed as a female connector element of the Luer type, the inner surface of the Luer type cone of which it is designated 4, and the inner end of which has an annular flange 5 fixed in a way fluid tight in an annular collar 6 that protrudes laterally from the main duct 2.
    [0014] Defined between the annular flange 5 and the annular collar 6 is a chamber 7 for the two-way valve, the general conformation of which is known from the already mentioned European patents Nos. EP-B-1093828 and EP-B-1661599. In detail, and as it is more clearly visible also in figure 5, the valve comprises an element 8 formed as an upside-down bowl made of elastic material, for example, silicone, the side wall 9 of which is at the bottom of the chamber 7 and the bottom wall of which, designated 10, defines an elastically deformable transverse diaphragm, the perimeter edge 11 of which is normally fitted in airtight contact against an annular valve base 12 with a conical surface formed within the annular flange 5 of the lateral tubular fitting 3. Hermetic contact is obtained thanks to the axial thrust applied by the side wall 9 of the cup-like element 8 on the diaphragm 10.
    [0015] The diaphragm 10 is formed with a ring of axial projections 13 (in the illustrated example, four in number), which are facing radially towards the base of the Luer type female cone 4 of the lateral tubular fitting 3 and the function of which it will be clarified in the following.
    [0016] The lateral tubular fitting 3 advantageously has two peculiar characteristics: firstly, it is produced from a relatively compliant material, that is, elastic material (for example, polybutylene terephthalate and the like), and preferably a its side wall is locally axially thinned, for example, as shown in figure 7, with two diametrically opposite portions 14 of each other being thinner than the remaining portions 15, which are thicker.
    [0017] Secondly, the inner surface of the Luer 4 female cone is obtained with the minimum possible tolerance in proportion to the size of a normal male Luer introducer fluid cone, partially represented schematically with a dotted line and designated by H in Figures 3 and 4.
    [0018] These characteristics contribute to achieving the functional effect that will be discussed in the following.
    [0019] In the case of the illustrated example, the main duct 2 has, in a region axially corresponding to the chamber 8, a portion 16 with an internal wall having a convergent-divergent profile. Said profile is defined by a localized narrowing of the rounded shape 17 of the internal wall of the portion 16, upstream of which (with respect to the flow direction A of the main fluid) the converging part is defined, in communication with the chamber 7 through a first radial passage 18, and downstream of which a divergent part is defined, in turn communicating with the chamber 7 through a second radial passage 19. This conformation, which, however, is not strictly necessary in relation to the operation of the valve, corresponds to one described and illustrated in the patent already cited No. EP-B-1661599, with the functional effect that will also be described in the following.
    [0020] In operation, as previously explained, the valve defined by the cup-shaped element 8 is normally adjusted in the closed position, with the peripheral edge 11 of the diaphragm 10 maintained in fluid hermetic contact against the annular valve base 12 as a result of the axial thrust exerted by the side wall 9.
    [0021] For the introduction of a secondary fluid into the main duct 2 (or even for the extraction of fluid from the main duct 2), the male introducer cone of the Luer H type is introduced axially into the lateral tubular fitting 4 and propelled within it. Considering the minimum tolerance mentioned above, the hermetic seal between the Luer type male cone of the H introducer and the Luer type female cone 4 of the lateral tubular fitting 3 is already obtained at a certain distance from the axial projections 13 of the diaphragm 10, that is, approximately in the area represented in Figures 3 and 4. The forward axial advancement of the H introducer, made possible by the radially flexible and possibly locally thinned conformation of the lateral tubular socket 3 mentioned above, occurs its interaction with the axial projections 13 diaphragm 10 and the separation of the perimeter edge 11 of the last one from the base of the valve 12, against the action of the thrust applied by the side wall 9. In this way, the flow of secondary fluid is allowed from the introducer H to the chamber 7 and so into main duct 2, or vice versa. In that step, the cross section with a convergent-divergent profile 16 defines a Venturi-type tube designed to prevent stagnation of the secondary fluid inside the chamber 7. Part of the flow of the main liquid enters the chamber 7 through the first passage 18 and exits of said through the second passage 19, captured thanks to the ejection effect obtained by the main fluid flow mentioned above in the area of the divergent profile. In this way, the main fluid in the main duct 2 achieves not only an emptying effect of the chamber 7, but also an effective continuous rinsing action of the same.
    [0022] When the introducer H is removed from the lateral tubular fitting 3, the last one is brought back again to its undeformed condition, and the side wall 9 of the cup-like element 8 brings the diaphragm 10 back to its closed position, pushing the perimeter edge 11 once again in fluid hermetic contact with the annular valve base 12.
    [0023] Of course, the details of construction and modalities can vary widely with respect to what has been described and illustrated here, without thereby deviating from the scope of the present invention as defined in the claims that follow.
    权利要求:
    Claims (3)
    [0001]
    1. Flow system for medical lines comprising a flow component (1) having a main duct (2) for a main fluid and at least one lateral tubular fitting (3) with a female Luer type cone (4) that communicates with the main duct (2) through a valve (8) including a transverse diaphragm (10) constituted by the bottom wall of a cup-shaped element (8) produced from elastically deformable material, the outer peripheral edge (11) of the which is normally kept in fluid hermetic contact against an annular valve base (12) of said lateral tubular fitting (3), and a secondary fluid Luer type introducer cone (H), which can be inserted in said tubular fitting side (3) with the female Luer-type cone (4) to move said transverse diaphragm (10) into an opening position, wherein said diaphragm (10) is pre-arranged to be pushed into said opening position as a result of direct thrust contact p said introducer link (H), and wherein said lateral tubular fitting (3) is configured in such a way as to engage in a fluid hermetic manner with said introducer (H) before the latter comes into contact with the said diaphragm (10), characterized by the fact that said lateral tubular fitting (3) is produced from an elastic material of relative compliance and can expand elastically in a radial direction after coupling with said introducer (H) in order to couple in a fluid hermetic manner with said introducer (H) before the latter comes into contact with said diaphragm (10), said lateral tubular fitting (3) has a locally thinning wall axially (15) and said diaphragm (15) 10) has an axial projection ring (13) facing radially towards said female Luer cone (4).
    [0002]
    2. Flow system according to claim 1, characterized by the fact that the outer peripheral edge (11) of said diaphragm (10) is normally kept in airtight fluid contact against said annular valve base (12 ) under the action of an axial thrust applied by the side wall (9) of said cup-shaped element (8); the deflection of said diaphragm (10) produced in use following the interaction between said introducer (H) and said axial projections (13) bringing the radial contraction of said peripheral edge (11) and its consequent separation from said annular valve base (12).
    [0003]
    3. Flow system according to claim 1 or 2, characterized by the fact that said main duct (2) has, in a position corresponding to the said anti-siphon valve (8), an axial section (16, 17) with a convergent-divergent profile.
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-15| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-12-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-09| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 11/06/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    ITTO2012A000601|2012-07-09|
    IT000601A|ITTO20120601A1|2012-07-09|2012-07-09|FLOW COMPONENT FOR MEDICAL LINES|
    PCT/IB2013/054768|WO2014009823A1|2012-07-09|2013-06-11|Flow system for medical lines|
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