• 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:
    catheter apparatus and catheter introducer catheter apparatus (10) comprising: a catheter (12) a catheter hub (14) having a distal section and a proximal section, in which the distal section is joined to the catheter and the proximal section defines a chamber (24) a needle (16) extending through the catheter hub and the catheter and defining an axial direction, in which the needle has opposite proximal and distal ends, the distal end forming a needle tip (18) a needle hub (20) attached to the proximal end of the needle and a needle guard (26) slidably arranged over the needle, where the needle guard is retained in the catheter fitting chamber when the needle extends through the catheter hub and the catheter, and where the needle guard is removable from the catheter hub, once the needle tip is received in the needle guard when the needle is removed from the catheter.
    公开号:BR112012026334B1
    申请号:R112012026334-0
    申请日:2010-05-20
    公开日:2020-01-07
    发明作者:Rishi Baid
    申请人:Poly Medicure Limited；
    IPC主号:
    专利说明:

    CATHETER APPLIANCE AND CATHETER INTRODUCER
    The present invention relates to a catheter apparatus comprising a catheter, a catheter hub with a distal section and a proximal section, in which the distal section is joined to the catheter and the proximal section defines a chamber, with a needle that extends through the catheter hub and the catheter and defines an axial direction, in which the needle has opposite proximal and distal ends, the distal end forming a needle tip, a needle hub attached to the proximal end of the needle, and a needle guard slidably arranged over the needle, where the needle guard is retained in the catheter fitting chamber, when the needle extends through the catheter hub and the catheter, and where the needle guard is removable from from the catheter hub as the tip of the needle is received in the needle guard when the needle is removed from the catheter.
    As used herein, the term proximal refers to a location on the device closest to, for example, a physician using the device. On the other hand, the term distal refers to a location on the device furthest from the doctor, such as the distal tip of the needle to be inserted into a patient's vein.
    A catheter device of the above type is generally known and commonly used to facilitate the insertion and placement of a catheter or other medical device in patients' veins.
    Due to the increasing incidence of pathogens that develop in the blood, such as the human immunodeficiency virus (HIV), hepatitis B virus (HBV) and hepatitis C virus (HCV), there is a need to protect doctors or other health professionals. medical or personal area handling catheter devices from accidental contact with the sharp tip of the needle after removing the needle from the catheter and the
    2/17 catheter.
    It is an object of the present invention to provide a catheter apparatus, which can be manufactured at low cost and at the same time provides safe protection against accidental needle sticks when the needle has been removed from the catheter and the catheter hub.
    This objective is satisfied by a catheter apparatus having the characteristics of claim 1.
    The catheter apparatus of the present invention comprises a catheter, a catheter hub with a distal section and a proximal section, in which the distal section is joined to the catheter and the proximal section defines a chamber, with a needle extending through the hub of the catheter. catheter and the catheter that defines an axial direction, in which the needle has opposite proximal and distal ends, the distal end forming a needle tip, a needle hub attached to the proximal end of the needle, and a sliding needle guard over the needle, where the needle guard is retained in the catheter hub chamber by means of a retaining arm surrounding the outside of the catheter hub when the needle extends through the catheter hub and the catheter, and where the needle is removable from the catheter hub, since the tip of the needle is received in the needle shield when the needle is removed from the catheter.
    The needle guard is effective as a needle tip protector that automatically covers the needle tip when removing the needle from the catheter. The needle guard thus serves to prevent accidental bites from, for example, a doctor by the tip of the needle after removing the needle from the catheter. Thus, the needle can be safely disposed of after use.
    Protecting the needle guard in the catheter hub chamber with a retaining arm
    3/17 outside of the catheter hub is a simple measure to achieve a safe place for needle protection in the catheter hub chamber and therefore effectively preventing accidental removal of the needle protection from the catheter chamber before the needle tip be received in the needle guard. Thus, the catheter apparatus of the present invention can be manufactured at reduced costs, while at the same time increasing the safety of the catheter apparatus.
    According to an embodiment, the proximal end of the retaining arm is connected to a base section of the needle guard, by means of a transverse segment. The transverse segment can generally extend in a radial direction, that is, perpendicular to the axial direction defined by the needle. Preferably, the transverse segment extends from the region of the proximal end of the needle guard.
    According to another embodiment, the retaining arm does not extend parallel to the axial direction. For example, the retaining arm can form an angle in the range between 0 and 10 ° with the axial direction, particularly so that an offset between the retention arm and hub of the catheter tapers toward the distal end the retaining arm. This angular orientation of the holding arm helps the holding arm to act as a spring arm, thereby improving the holding effect of the holding arm.
    In order to further enhance the retention effect of the retaining arm, a hook-shaped projection can be positioned in the region of the distal end of the retaining arm.
    The retention effect can be further enhanced if a projection or recess or a combination of a projection and recess is positioned on the surface
    4/17 outside of the catheter hub for engagement with the retaining arm, especially for coupling with a hook-like projection provided in the region of the distal end of the retaining arm.
    According to another embodiment, at least one support arm for engaging the external surface of the catheter hub is provided on a side opposite to the needle protection of the retaining arm. The support arm helps to prevent the needle shield received in the catheter hub from moving in the radial direction inside the chamber. In other words, the support arm stabilizes the needle protection in the catheter hub and, thus, contributes to a desired positioning of the needle protection in the chamber. The support arm may or may not have a retention relationship with the catheter hub.
    According to yet another embodiment, the needle guard generally comprises a cylindrical base section in the region of its proximal end, as well as the first and second arms which extend in a generally axial direction from a distal side of the base part, wherein the first and second arms are surrounded by a tension element, for example, an elastic band, in a region distal from the first and second arms.
    The tension element exerts a recovery force on the first and second arms, when the first and second arms are spread by the needle extension all the way through the needle guard, which is the state in which the catheter device is, typically stored before use. The tension element thus ensures that the separate spread arms engage and protect the tip of the needle when the needle is removed from the catheter, even after a long shelf life, thus continuously ensuring correct function of the needle guard. In addition, the tension element prevents the arms from being
    5/17 released when the needle safety device slides along the needle, which would further increase the correct function of the needle protection device. In addition, the tension element helps to prevent the needle tip from protruding laterally out of the needle guard, thereby further enhancing the protective function of the needle safety device.
    Preferably, the first and second arms are spaced apart by the needle fully extended through the needle guard such that the tension element is brought into engagement with the inner surface of the catheter hub. This contributes to the holding effect achieved by the holding arm and further increases the safety of the device. The inner surface of the catheter hub, in particular, the inner surface of the containment chamber, in general, can be smooth.
    In order to prevent the needle tip from being received in the needle shield of the distally protruding from the needle shield, a transverse wall can be arranged in a distal region of one of the first and second arms with a groove provided on one side of the transverse wall, the groove extending substantially in the axial direction. The groove acts as a guide groove for the needle and assists the axial movement of the needle in relation to the needle guard. In addition, the needle is prevented from sliding laterally out of the transverse wall. Such a sideways movement would significantly increase the force required to move the needle in relation to the needle guard, which would prevent the needle guard from functioning properly.
    According to another embodiment, a gap is formed in said first and second arms, that is, in the transport arm of the transverse wall. Preferably, the
    6/17 gap is formed on the outside of the arm and / or the region between the base section and the tension element. The interval increases the deflection of the arm, in the region that is supplied and, thus, reduces the replacement force acting on the transverse wall, while it is supported by the needle. This allows the needle to be moved more easily in relation to the transverse wall, as the frictional force acting on the needle is reduced. The gap can, for example, be formed by a groove that extends in a direction transversal to the direction, both in the axial and in the radial direction.
    The catheter apparatus is particularly inexpensive to manufacture, if the base section, the first and second arms, the retaining arm and the support arm are entirely made of a first material. The first material can, for example, be a plastic material. Thus, the base section, the first and second arms, the retaining arm and the support arm can be manufactured by injection molding.
    Alternatively, the base section, one of the first and second arms and the retaining arm can be made entirely from a first material, for example, a plastic material, and the other from the first and second arms can be made from of a second material different from said first material. For example, said other second of one of the first and second arms may include a strip of material that has spring-like properties, for example, a sheet metal strip.
    According to another embodiment, the base section of the needle guard has an axial hole extended through it to receive the needle, in which the hole profile is adapted to the main external profile of the needle, the needle and has a change in the profile, in particular, a widening, near the tip of the needle, the referred change in the profile presenting an external profile of a dimension that is
    7/17 larger than the maximum dimension of the hole profile. The change in profile prevents the needle guard from slipping out of the needle when the needle tip is received between the arms, thereby further improving the protective function of the needle safety device.
    The profile change can, for example, be done by a needle crimp. However, other ways of changing the profile are possible, for example, by subjecting the needle to concentrated heat in a localized area, using, for example, a welding process, such as a laser welding process, without adding additional material. Alternatively, the change in profile can be formed from additional material distributed on the outer surface of the needle. In order to locate the distributed material in a defined position, a gap or groove can be formed on the outer surface or circumference of the needle. The additional material can, for example, be selected from at least one of a plastic material, an adhesive, a resin and a metallic material.
    In case the additional material is a metallic material, the change in profile can be, for example, formed by accumulation of weld or by welding the additional material to the needle.
    Alternatively, the additional material can be glued to the needle.
    The internal profile of the needle can either be reduced in the region of the profile change, for example, if the profile change is formed by crimping, or it can be substantially constant along the length of the needle, for example, if the profile change is formed by applying additional materials to the needle.
    According to yet another embodiment, the base section of the needle guard is made from a first
    8/17 material and has an axial hole that extends through it to receive the needle, and a stop element is provided in the base section or on a distal or proximal side of it, the stop element being made of a second material different from the first material and which has a middle of the hole that is aligned with the axial hole and has a profile that is adapted to a main external profile of the needle, in which the needle has a change in profile near the tip of the needle, said profile change with an external profile of a dimension that is greater than the maximum dimension of the hole profile.
    Preferably, the second material is of greater hardness and / or stiffness than the first material. For example, the first material can be a plastic material and the second material can consist of a metal, ceramic or rubber material, or any other type of material that is hard and not as easily distorted as the first material.
    On the other hand, the stopping element can be a circular disc, a ring, or a washer. However, it does not necessarily have to be circular and can have any other geometric shape, such as a rectangular, square or triangular shape.
    Alternatively, the stop element can be defined by one of the first and second arms, particularly from a section of the proximal end of said arm, said arm is preferably formed from a sheet metal strip. This embodiment is particularly advantageous, since the said arm thus performs a double function in that it not only protects the needle tip from protruding distally from the needle guard, but also helps to prevent the needle guard slide out of the
    9/17 needle.
    Preferred embodiments of the present invention are described in the following description and in the accompanying drawings, in which:
    Figs. IA and B show side views of a catheter apparatus of the present invention before use;
    Fig. 2 shows a perspective view of a needle, a needle hub attached to it and a needle guard that holds a tip of the needle after using the catheter apparatus of fig.l;
    Figs. 3A to C show a perspective view (A and B) and a side view (C) of the needle guard of fig. 2 and
    Fig. 4 shows a longitudinal sectional view of a needle guard received in a catheter hub of the catheter device of fig. 1;
    Figs. 5A and B show a side view (A) and a perspective view (C) of a needle protection alternative; and
    Figs. 6A to C show a side view (A), a perspective view (B) and a longitudinal sectional view (C) of the needle guard of fig. 5, without tension element.
    Fig. 1 shows a catheter apparatus 10 according to
    with the present invention before your use. 0 device in catheter 10 includes a tube in catheter 12, by having at distal ends and proximal, and a cube of catheter 14
    attached to catheter 12 at the proximal end of catheter 12.
    The catheter apparatus 10 further comprises a needle 16 which extends through the catheter 12 and the catheter hub 14 and which defines an axial direction. The needle 16 has a distal and proximal end, where the sharp tip of the needle 18 is formed at the distal end of the needle 16, which protrudes from the catheter 12, at the distal end thereof.
    10/17
    A needle hub 20 is connected to the needle 16 at the proximal end of the needle 16. A gate element 22 is mounted on the needle hub 20, with a proximal side of the needle hub 20, which makes connection possible, for example, a PVC tube for the catheter apparatus 10 for collecting a patient's blood or delivering a fluid to be administered to a patient.
    The catheter hub 14 defines an inner chamber 24 (Fig. 4) in which a needle guard 26 is fitted. In fig. 1, only a retaining arm 54 of the needle guard 26 can be seen. The needle guard 26 is slidably arranged over the needle 16 such that it moves along the needle 16 when the needle 16 is removed from the catheter 12. The purpose of the needle guard 26 is to cover the tip of the needle 18, after needle 16 has been used, in order to avoid accidental pricks with needle 16 by a person handling the catheter apparatus 10, as can be seen from fig. 2.
    As shown in fig. 3, the needle guard 26 includes a base section 28, generally cylindrical with a proximal end of the needle guard 26. The first and second arms 30, 32 extend from a distal face 34 of the base section 28, generally in the axial direction . The first arm 30 is larger than the second arm 32.
    The transverse wall 36 is disposed in a distal region of the first arm 30. The dimension of the transverse wall 36, as seen in the radial direction is selected in such a way that the transverse walls 36 overlap the second arm 32, when the tip needle 18 is received in the needle guard 26, that is, between the first and second arms 30, 32, such that the tip of the needle 18 is blocked by the transverse wall 36 from a projection distal from the needle guard 26 (Fig. 2).
    11/17
    Before being used, that is, when the needle 16 extends all the way through the protection of the needle 26, the transverse wall 36 is supported on the needle 16 and the first arm 30 is deflected away from the second arm 32. An axial groove 38 is positioned on the transverse wall 36 on its side 40 facing the needle 16, in order to guide the transverse wall 36 on the needle 16, especially when the needle 16 is pulled through the needle guard 26 on the removal of needle 16 from catheter 12.
    A gap 42 is provided on the outer surface of a proximal section 44 of the first arm 30, in order to increase the deflection of the first arm 30.
    The distal sections 46, 47 of the first and second arms 30, 32 have outer surfaces that are tapered towards the distal ends of the first and second arms 30, 32. The first and second arms 30, 32 are surrounded by an elastic band 48 on the region of distal sections 46, 47. Due to the outer inclined surfaces of distal sections 46, 47 the elastic band 48 is prevented from sliding out of distal sections 46, 47 to the proximal end of needle guard 26 when the first and second arms 30, 32 are pushed away against a restoring force of the elastic 48 by the needle 16 extending through the protection of the needle 26. In order to better define the axial position of the elastic band 48, the projections 50 extending along the outer periphery of the first and second arms 30, 32 can be provided adjacent to the elastic band 48 (Fig. 4). These protrusions 50 are not shown in Figs. 2 and 3.
    As best seen in fig. 4, an axial hole 52 extends through the base section 28 of the needle guard 26 to receive the needle 16. The profile of the hole 52 is
    12/17 adapted to the main outer profile of needle 16. Needle 16 has a change in profile, in particular, an enlargement (not shown), near its tip 18, which has an external profile of a dimension that is larger than the maximum dimension of the profile of the hole 52. Thus, the change in the profile prevents the needle guard 26 from sliding out of the needle 16 when the
    far end gives needle 18 for received between the first and second arms 30, 32 covered by protection gives needle 26 •a arm in retention 54 is provided at protection gives needle 26, The end in protect protection of needle 26 at
    chamber 24 of the catheter hub and, in particular, to prevent the removal of the needle guard 26 from the catheter hub 14 during removal of the needle 16 before the needle tip 18 is safely received in the needle guard 26. The retaining arm 54 is connected to the base section 28 of the needle guard 26 via a cross section 56. The cross section 56 extends outwardly from the base section 28 in a direction generally radial to the side of the second arm 32 The retaining arm 54 extends distally from the transverse segment 56 and is slightly inclined towards the second arm 32. Preferably, the retaining arm 45 forms an angle in the range of between 0 ° and 10 °. With the axial direction, such that an offset between the retaining arm 54 and the second arm 32 narrows towards a distal end of the retaining arm 54.
    The hook-like projection 58 is positioned in the region of the distal end of the retaining arm 54. The hook-shaped projection 58 of the retaining arm 54 engages behind a corresponding projection 60 and in a groove or gap 61 provided on the surface 62 of the catheter hub 14. Due to the coupling between the hook-shaped protrusion 58 of the retaining arm 54 and
    13/17 the combination of protrusion 60 and recess 61 formed in the catheter hub 14, the needle guard 26 is prevented from moving axially in relation to the catheter hub 14 and effectively retained in the catheter hub 14 until a pulling force is exerted by needle 16 in the base section 28 of needle guard 26 by changing the profile of needle 16 when removing needle 16 from catheter 12 it becomes large enough to disengage the retaining arm 54 from the protrusion 60 of the catheter hub 14. It should be noted that instead of a combination of projection 60 and gap 61 formed in the catheter hub 14 it is also possible to provide that a projection 60 or gap 61 on the outer surface 62 of the catheter hub 14 to be engaged with the projection in hook shape 58 of the retaining arm 54.
    The retention of the needle guard 26 in the catheter hub 14 can be further improved if the elastic band 48 engages with an inner surface 64 of the catheter hub 14 in the propagation state, in addition to the first and second arms 30, 32. Once that the tip of the needle 18 passes the transverse wall 36 and the first and second arms 30, 32 fit together, thus allowing the elastic band 48 to contract, the elastic 48 can disengage from the inner surface 64 of the catheter hub 14 A support arm 66 is provided on the opposite side of the needle guard 26 from the retaining arm 54. The support arm 66 is generally angled to the right with a cross section 68 extending from the base section 28 in a generally radial direction. The support arm 66 is configured to be in contact with the outer surface 62 of the catheter hub 14 over substantially its entire length and width. The support arm 66, therefore, prevents the protection of the needle 26 received in the catheter hub 14 from moving in a radial direction inside the chamber 24. The support arm 66 can also help
    14/17 to ensure the protection of the needle 26 against axial movement in relation to the catheter hub 14, which aggravates the retention of the needle protection 26 in the catheter hub 14. However, the support arm 66 does not necessarily have to be in such a retention relationship with the catheter hub 14.
    In the present embodiment, the retaining arm 54 is provided next to the base section 28 adjacent to the second arm 32, and the support arm 66 is positioned next to the base section 28 adjacent to the first arm 30. However, it is generally also possible to provide the retaining arm 54, on the side of the base section 28 adjacent to the first arm 30 and to the support arm 66 on the side of the base section 28 adjacent to the second arm 32.
    As shown in Figs. 1 to 4, the base section 28, the first and second arms 30, 32, the retaining arm 54 and the supporting arm 66 are integrally molded, for example, from a plastic material by means of injection molding. However, it must be understood that this integrated design is not mandatory. Instead, one or more of the aforementioned components can be made of a material that is different from the material of the other components, and this component can be attached to the other components, for example, by welding, gluing, welding or the like.
    Although not shown in Figs. 1 to 4, a stop element can be positioned in the base section 28 or in the distal face 34 of the base section 28, where the stop element has a hole through which it is aligned with the axial hole 52 in the base section 28 and which has a profile that adapts to the main external profile of the needle 16. Preferably, this stop element is made of a material of greater hardness and / or rigidity than the material of the base section 28, in such a way that this element stop resists greater forces exerted by changing the profile of the needle 16 when
    15/17 removes needle 16 from catheter 12, therefore, the more effective the prevention of changing the profile of the needle 16 from passing through the base section 28 and, therefore, the more effective is the prevention in slipping out of the needle guard 26 the needle 16.
    Figs. 5 and 6 show an alternative needle guard 26 that can be used in the catheter apparatus 10 of the present invention. This protection of the needle 26 is generally identical in function, but differs from the protection of the needle 26 described above, mainly, in the direction that it does not have any support arm and in that the first arm 30 is not integrally molded with the base section 28, the second arm 32 and the arm retention 54.
    Instead, the first arm 30 is made of a sheet metal strip 70, the distal end section 72, from which it is folded to form the transverse wall 36 and a proximal end section 74 to which it is attached, for example , glued or welded to a proximal face 76 of the base section 28. As described above, the distal sections 46, 47 of the first and second arms 30, 32 are surrounded by an elastic band 48 such that the first and second arms 30 , 32 can be separated against a restoring force of elastic band 48 (Fig. 5).
    As best seen in fig. 6C, a through hole 78 is positioned in the proximal end section 74 of the sheet metal strip 70 and aligned with the axial hole 52 in the base section 28. The through hole profile 78 is adapted to the main outer profile of the needle 16 , while the profile of the axial bore 52 is slightly wider. Therefore, in this protection of the needle 26, the change in the profile of the needle 16, for example, its widening, can slide along the axial hole 52 and is limited in movement in the proximal direction only by engaging with the section of
    16/17 proximal end 74 of the foil strip 70 on the proximal side of the base part 28. The proximal end section 74 of the foil strip 70, therefore, functions as a stop element, of the type that has already been discussed above , and helps to prevent needle guard 26 from sliding off needle 16.
    In further contrast to the needle guard 26 shown in Figs. 1 to 4, in the needle guard 26 of FIGS. 5 and 6, the axial groove 38 guides the needle 16 when the relative movement for protecting the needle 26 is not provided with the first arm 30, but on the second arm 32, as best seen in fig. 6B.
    LIST OF REFERENCE NUMBERS catheter apparatus 10 catheter 12 catheter hub 14 needle 16 needle tip 18 needle hub 20 gate element 22 chamber 24 needle protection 26 base part 28 first arm 30 second arm 32 distal face 34 cross wall 36 groove axial 38 side 40 range 42 proximal section 44 distal section 46 distal section 47
    1Ί / 2.Ί elastic 48 protrusion 50 axial bore 52 retaining arm 54 cross section 56 protrusion 58 protrusion 61 outer surface 62 inner surface 64 support arm 66 cross segment 68 sheet metal strip 70 distal end section 72 section of proximal end 74 proximal face 76 through hole 78
    权利要求:
    Claims (22)
    [1]
    1. CATHETER APPLIANCE (10), characterized by comprising:
    a catheter (12);
    a catheter hub (14) having a distal section and a proximal section, in which the distal section is joined to the catheter (12) and the proximal section defines a chamber (24);
    a needle (16) that extends through the catheter hub (14) and the catheter (12) and that define an axial direction, in which the needle (16) has opposite proximal and distal ends, the distal end forming a tip of needle (18);
    a needle hub (20) attached to the proximal end of the needle (16); and a needle guard (26) slidably arranged over the needle (16), where the needle guard (26) is retained in the chamber (24) of the catheter hub (14) by means of a retaining arm ( 54) engaged outside the catheter hub (14) in which the retaining arm (54) does not extend parallel to the axial direction and forms an angle in the range of 0 ° and 10 ° with the axial direction, so that a compensation between the retaining arm (54) and the catheter hub (14) narrows towards the distal end of the retaining arm (54), when the needle (16) extends through the catheter hub (14) and the catheter (12), and where the needle guard (26) is removable from the catheter hub (14) once the needle tip (18) is received in the needle guard (26) after removal of the needle (16) of the catheter (12).
    [2]
    2. CATHETER APPLIANCE (10), according to claim 1, characterized in that the proximal end of the retaining arm (54) is connected to a base section of the needle guard (26) by means of a transverse segment (56), in particular where the transverse segment (56)
    Petition 870190092263, of 16/09/2019, p. 5/11
    2/6 generally extends in a radial direction and / or from a proximal end region of the needle guard (26).
    [3]
    CATHETER APPLIANCE (10) according to either of Claims 1 or 2, characterized in that a projection (60) or a gap or a combination of a projection and a gap is provided on the outer surface (62) of the hub catheter (14) to engage with the retaining arm (54).
    [4]
    CATHETER APPLIANCE (10) according to any one of claims 1 to 3, characterized in that a hook-shaped protrusion (58) is provided in the region of a distal end of the retaining arm (54).
    [5]
    CATHETER APPLIANCE (10) according to any one of claims 1 to 4, characterized in that the projection (60) or a gap or a combination of a projection and a gap is provided on the outer surface (62) of the catheter hub (14) to engage with a hook-shaped protrusion (58) provided in the region of a distal end of the retaining arm (54).
    [6]
    6. CATHETER APPLIANCE (10) according to any one of claims 1 to 5, characterized in that at least one support arm (66) for engaging the outer surface (62) of the catheter hub (14) is provided in one of the sides of the needle guard (26) opposite the retaining arm (54).
    [7]
    7. CATHETER APPLIANCE (10) according to any one of claims 1 to 6, characterized in that the needle guard (26) comprises a base section (28) generally cylindrical in the region of its proximal end, and first and second arms ( 30, 32) extending in a generally axial direction from a distal side of the base section (28), in which the first and second arms (30, 32) are surrounded by a tension element, for example, a tape
    Petition 870190092263, of 16/09/2019, p. 6/11
    3/6 elastic (48), in a distal region of the first and second arms.
    [8]
    8. CATHETER APPLIANCE (10) according to claim 7, characterized in that the first and second arms (30, 32) are spaced apart by the needle (16) which extends completely through the needle guard (26) in such a way that the tension element (48) is brought into retention engagement with an inner surface (64) of the catheter hub (14).
    [9]
    CATHETER APPLIANCE (10) according to either of claims 7 or 8, characterized in that the transverse wall (36) is arranged in a distal region of one of the first and second arms (30, 32), in which a groove (38) is provided on one side (40) of the transverse wall (36), the groove (38) which extends substantially in the axial direction.
    [10]
    10. CATHETER APPLIANCE (10) according to any one of claims 7 to 9, characterized in that a gap (42) is formed in said one of the first and second arms (30, 32), in particular on the outer side of the arm and / or a region between the base section (28) and the tension element (48), preferably where the gap (42) is formed by a groove that extends in a transverse direction to both an axial and a direction a radial direction.
    [11]
    11. CATHETER APPLIANCE (10) according to any one of claims 7 to 10, characterized by the base section (28), the first and second arms (30, 32), the holding arm (54) and, if present , a support arm (66) are integrally made of a first material, for example, a plastic material, for example, by injection molding.
    [12]
    12. CATHETER APPLIANCE (10) according to any one of claims 7 to 10, characterized in that the base section (28),
    Petition 870190092263, of 16/09/2019, p. 7/11
    4/6 one of the first and second arms (30, 32) and the retaining arm (54) are integrally made of a first material, for example a plastic material, and the other of the first and second arms (30, 32) is made of a second material different from said first material.
    [13]
    13. CATHETER INTRODUCER, as defined in claim 12, characterized in that said other of the first and second arms (30, 32) includes a strip of material that has spring-like properties, for example, a sheet metal strip.
    [14]
    14. CATHETER APPLIANCE (10) according to any one of claims 7 to 12 and as defined in claim 13, characterized in that the base section (28) of the needle guard (26) has an axial hole (52) that extends through it to receive the needle (16), where the profile of the hole (52) is adapted to the main outer profile of the needle (16), and the needle (16) has a change in profile near the tip of the needle (18 ), said change in profile having an external profile of a dimension that is greater than the maximum dimension of the hole profile (52).
    [15]
    15. CATHETER APPLIANCE (10) according to any one of claims 7 to 12 and as defined in claim 13, characterized in that the base section (28) of the needle guard (26) is made from a first material and have an axial hole (52) that extends through it to receive the needle (16), and a stop element be positioned in the base section (28) or on a distal or proximal side of it, the stop element being made of a second material different from the first material and having a through hole that is aligned with the axial hole (52) and has a profile adapted to a main external profile of the needle (16), in which the needle (16) has a change in the profile close to the needle tip (18), the referred profile change
    Petition 870190092263, of 16/09/2019, p. 11/11
    5/6 having an external profile of a dimension that is greater than the maximum dimension of the hole profile (52).
    [16]
    16. CATHETER APPLIANCE (10), according to claim 15, characterized in that the second material is of greater hardness and / or rigidity than the first material.
    [17]
    17. CATHETER APPLIANCE (10) according to any one of claims 15 or 16, characterized in that the stop element has a disk-like shape and / or is made as a ring or washer.
    [18]
    18. CATHETER APPLIANCE (10) according to either of Claims 15 or 16, characterized in that the stop element is defined by one of the first and second arms (30, 32), in particular, by a proximal end section ( 74) of said arm (30), said arm (30), preferably being formed from a strip of sheet metal (70).
    [19]
    19. CATHETER APPLIANCE (10), according to any one of claims 14 to 18, characterized in that the profile change is formed by subjecting the needle (16) to concentrated heat in a localized area, using, for example, a welding process , such as a laser welding process, with or without the addition of additional material.
    [20]
    20. CATHETER APPLIANCE (10) according to any one of claims 14 to 18, characterized in that the profile change is formed from an additional material distributed on the outer surface of the needle (16).
    [21]
    21. CATHETER APPLIANCE (10), according to claim 20, characterized in that the additional material is selected from at least one of a plastic material, an adhesive, a resin and a metallic material.
    [22]
    22. CATHETER APPLIANCE (10), according to any one of claims 1 to 12 or 14 to 22 and as
    Petition 870190092263, of 16/09/2019, p. 9/11
    6/6 defined in claim 13, characterized in that an inner surface (64) of the catheter hub, in particular an inner surface (64) limiting the chamber (24), is generally smooth.
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    ZA201207730B|2015-06-24|
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    AU2010355003C1|2015-04-02|
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    SG184447A1|2012-11-29|
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    法律状态:
    2019-01-15| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-16| B06T| Formal requirements before examination|
    2019-12-03| B09A| Decision: intention to grant|
    2020-01-07| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/05/2010, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    IN917/DEL/2010|2010-04-16|
    IN917DE2010|2010-04-16|
    PCT/IB2010/052239|WO2011154767A1|2010-04-16|2010-05-20|Catheter apparatus|
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