• 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:
    intravenous catheter apparatus, and needle guard An intravenous catheter apparatus comprising: a needle having a needle shaft, a needle tip at the distal end of the needle shaft and a needle connector mounted on the proximal end of the needle shaft, a intravenous catheter tube mounted to a catheter connector and a movable needle guard on the needle shaft, wherein the needle guard comprises: a base having a passage for the needle extending in an axial direction from the proximal side from the base, through the base, to a distal side of the base, the first and second arms extending substantially in the axial direction from the distal side of the base and a distal wall that is transversely disposed in a distal region of the first arm, at that a recess provided in the needle guard receives a stop element to stop movement of the needle shaft relative to the needle guard.
    公开号:BR112014020813B1
    申请号:R112014020813-1
    申请日:2013-02-13
    公开日:2021-06-29
    发明作者:Rishi Baid
    申请人:Poly Medicure Limited；
    IPC主号:
    专利说明:

    [001] This application claims priority from Indian Patent Application No. 486/DEL/2012, February 21, 2012, the entire disclosure of which is incorporated herein by reference. FIELD OF THE INVENTION
    [002] The invention relates to a needle guard for use in a medical device, in particular for use in a catheter apparatus. The needle guard includes a base that has a needle passage that extends in an axial direction from the proximal side of the base, through the base, to a distal side of the base. The needle guard further includes first and second arms that extend substantially in the axial direction from the distal side of the base and a distal wall that is disposed transversely to a distal region of the first arm. BACKGROUND OF THE INVENTION
    [003] Such needle guards are known in general and are used to cover the tip of a needle of a medical device after use of the medical device. Typically, needle guards are designed to cover the needle tip automatically after removing the needle, for example, from a patient. The needle guard thus serves to prevent accidental pricking, for example, by a doctor by the tip of the needle after removing the needle from the medical device. In this way, the needle can be safely discarded after use, without the danger of transmission of potentially highly infectious and/or lethal diseases to the physician by the patient. SUMMARY OF THE INVENTION
    [004] Generally speaking, the term proximal refers to a region of the device or a location on the device that is closest to, for example, a physician using the device. In contrast to this, the term distal refers to a region of the device that is further away from the physician, for example the distal region of a needle will be the region of a needle containing the needle tip that is to be inserted, for example , in a patient's vein.
    [005] It is an object of the invention to provide an improved needle guard.
    [006] This object is satisfied by the needle guard according to claim 1.
    [007] The needle guard of the present invention includes a base made of a first material and having a needle passage extending in an axial direction from the proximal side of the base, through the base, to a distal side of the base. base, such that a needle having a main external profile can be movably arranged in the needle passage. The needle guard further includes first and second arms extending substantially in the axial direction from the distal side of the base, with the first arm having a distal region and a proximal region. A distal wall is disposed across a distal region of the first arm.
    [008] The needle guard also includes a stop element that is disposed on the needle guard. The stop element is made of a second material different from the first material and has a through hole with a profile that is adapted to the main external profile of the needle shaft. In the case of, for example, circular cross sections, the diameter of the through hole may be slightly larger than the main outside diameter of the needle. The stop element can be formed by a washer formed integrally within the base.
    [009] In order to allow a free movement of the needle relative to the needle guard when the needle is removed from the catheter tube, the stop element is preferably arranged such that its through hole is in general alignment with the needle pass of the needle guard.
    [010] The stop element can be a circular disc, a ring, or a washer. However, it does not necessarily have to be circular and can be any other geometric shape, such as a square, rectangular or triangular shape.
    [011] Preferably, the second material has greater hardness and/or rigidity than the first material. For example, the first material can be a plastic material and the second material can consist of a metal, a ceramic or a rubber material, or any other type of material that is rigid and not as easily distorted as the first material.
    [012] The stop element can be arranged inside the base. Also made of a different material, it can be fully integrated into it. As a preferred alternative, the stop element can be arranged loosely over the needle between the two arms of the needle guard and float on the needle shaft. In this configuration, the stop element can be formed by a tubular element. It can be secured by fastening means such as a recess or protrusions in a predetermined section of the needle guard.
    [013] Needle protectors of the above type are used, for example, in catheter devices. The invention therefore also provides a catheter apparatus including a needle guard in accordance with the present invention, with the catheter apparatus further including a catheter tube, a catheter connector and a needle having a needle shaft, a needle tip and a needle connector, wherein the needle shaft has a distal section and a proximal section, with at least the proximal section having a main external profile.
    [014] The needle may also have a flare provided between the distal section and proximal section of the needle shaft. The flare has an external profile in which a dimension thereof is greater than a maximum dimension of the profile of the through hole of the stop element. In a preferred embodiment, the flaring is done by crimping the needle shaft. However, there are other ways to form the flare, such as applying additional material to the needle shank, for example, by soldering, soldering or gluing, etc.
    [015] The internal profile of the needle can either be reduced in the region of the flare, for example, if the flare is formed by crimping, or it can be substantially constant along the length of the needle, for example, if the flare is formed by crimping. application of additional material on the needle shaft.
    [016] The needle may also be formed with an opening disposed distally or proximally to the flare. This opening can be formed by a small slit, which is cut into the needle shaft and which extends in the axial direction for about a small distance, eg 0.3 to 1 mm. The opening is just large enough to provide an early blood reflow function near the tip of the needle within the catheter tube so that the doctor can recognize that they have placed the needle correctly into the patient's vein. In the case of correct needle placement, blood flows out of the opening inside the needle shaft into the space between the needle shaft and the inner wall of the clear catheter tube and is visible to the physician.
    [017] Before using the catheter apparatus, the needle guard is disposed on the catheter connector near a proximal end of the needle shaft. In this situation, the needle extends completely inside the needle guard, thus deflecting the first needle guard arm outwards, i.e. at an angle in the axial direction, such that the distal wall of the first arm is supported on the needle shaft. After insertion of the catheter into a patient, the needle is withdrawn from the catheter tube and the needle shaft moves through the needle guard while the needle guard is retained in the catheter connector. Once the needle tip passes through the transverse distal wall of the needle guard, i.e. such that the needle shaft no longer supports the distal wall, a restoring force ensures that the first arm of the needle guard is displaced. backwards in alignment with the axial direction of the needle guard so that the needle tip is blocked by the distal wall of the needle guard, ie the needle tip is prevented from protruding axially out of the needle guard.
    [018] Since the needle tip is blocked by the distal wall and the needle is still being retracted, the needle shaft flare engages the stop element to prevent the needle guard from being removed from the needle shaft. The fact that the stop element is made of a second material that is harder and less easily distorted than the first base material has the effect that the needle guard is more effectively fixed onto the needle shaft and it can be held back even if excessive external force is applied when pulling the needle, as the flare is prevented from being pulled through the base of the needle guard due to the stop element. Therefore, it is avoided that needle guard is accidentally removed from the needle tip and, as a result, the needle guard provides better protection against accidental punctures and thus increases safety for the person handling the catheter apparatus.
    [019] In another configuration of the needle guard, a tensioning element surrounds the first and second arms of the needle guard. In the deviated state of the first arm, the tensioning element expands against a restoring force from the tensioning element. Since the needle shaft no longer supports the distal wall of the first arm, the tensioning element assists in repositioning the first arm back into axial alignment with the axial direction. This repositioning is necessary so that the distal wall can block the axial sliding of the needle tip out of the needle guard. In addition, the tensioning element helps to enclose a space between the first and second arms and therefore helps to prevent the needle shaft and needle tip from protruding laterally out of the needle guard. In other words, the tensioning element contributes to the protective effect of the needle guard.
    [020] According to the invention, the two arms of the needle, in particular the first arm having the distal wall blocking the tip of the needle, do not have any recess in order to provide a high strength and a spring action of the first arm such that it is tilted into the locking position with its distal wall facing the tip of the needle.
    [021] In an additional configuration of the needle guard, a groove is provided on one side of the distal wall, with such groove extending substantially in the axial direction. The groove acts as a guide groove for the needle shaft and aids axial movement of the needle shaft in relation to the needle guard. In addition, the needle shaft is prevented from sliding laterally out of the distal wall. Such lateral movement would significantly increase the force required to move the needle shaft in relation to the needle guard, which would impede proper functioning of the needle guard.
    [022] According to another embodiment of the invention, the catheter connector within which the needle guard is received in a ready position, includes fastening means for securing the needle guard even under retraction forces acting on the needle guard when the needle is retracted out of the patient's vein. These attachment means may include a recess formed in the inner peripheral surface of the catheter connector into which a projection formed in the first arm of the needle guard securely engages in the ready position, i.e. when the first arm is deflected away from the second arm by the needle shank. Alternatively, these attachment means may include a protrusion formed on the inner peripheral surface of the catheter connector. The attachment means on the inner peripheral surface of the catheter connector may also be formed by a combination of a recess and a protrusion wherein the needle guard has a corresponding complementary profile of a protrusion that engages in the recess on the inner peripheral surface of the catheter connector. catheter and a recess that engages with the protrusion on the inner peripheral surface of the catheter connector. Alternatively, the securing means may include at least one outer arm formed at the base and adapted to engage the catheter connector with its outer peripheral surface. In particular, the securing means may include two outer arms formed at substantially diametrical locations of the base and adapted to engage the catheter connector with its outer peripheral surface. By providing such a fastening means, the fastening function is alternatively or additionally provided on the outside of the catheter connector. Thus, the manufacturing effort can be reduced and operational safety can be increased even further.
    [023] In another configuration the catheter connector may have an opening or window to provide additional space for the first diverted arm in the ready position. The opening or window may be formed as a through hole through the peripheral wall of the catheter connector. The opening in the peripheral wall of the catheter connector can also provide a retaining tip/edge that acts as the securing means to secure the needle shield inside the catheter connector in the ready position, even with retraction forces applied over the needle by the doctor.
    [024] Other advantageous configurations of the invention and preferred apparatus for carrying out the invention are described in connection with the associated drawings. BRIEF DESCRIPTION OF THE ASSOCIATED DRAWINGS
    [025] The present invention will now be explained in greater detail below, with reference to the preferred embodiments and the attached associated drawings, in which are shown:
    [026] Fig. 1 is a catheter apparatus according to the present invention;
    [027] Fig. 2 is a needle, a needle connector and a needle guard removed from the catheter apparatus of Fig. 1;
    [028] Figs. 3A - 3D represent the needle guard of Fig. 2;
    [029] Figs. 4A - 4B are two illustrations of the needle guard of Fig. 2 interacting with different types of catheter connectors where the tensioning element has been omitted for the sake of clarity of drawing;
    [030] Figs. 5 and 6 are illustrations of sections of the needle guard of Fig. 4; and
    [031] Figs. 7A - 7C represent different needle configurations. DETAILED DESCRIPTION OF THE INVENTION
    [032] Fig. 1 shows a catheter apparatus 10 according to the present invention. Catheter apparatus 10 includes a catheter connector 12, a catheter tube 14, tabs 16, an orifice 18, and a needle 20. The catheter connector 12 has a distal end 22 and a proximal end 24, the catheter tube 14 is disposed adjacent distal end 22 of catheter connector 12.
    [033] The needle 20, shown in Fig. 2, has a needle shaft 28, a needle tip 30 in the distal section 34 of the needle shaft and a needle connector 36 mounted on the proximal end 36 of the needle shaft 28. Both the distal section 34 and the proximal section 36 generally have the same external profile. In the present configuration, the distal and proximal sections 34, 36 have circular cross sections with generally identical outer diameters.
    [034] A flare 32 of needle 20 is provided between distal section 34 and proximal section 36 of needle shaft 28. Flare 32 has a maximum dimension in a direction transverse to needle shaft 28, which is greater than the diameter external of the distal and proximal sections 34, 36. The widening 32 can be done, for example, by crimping the needle shaft 28.
    [035] Before using the catheter apparatus 10, the needle 20 is received in the catheter connector 12 and the transparent catheter tube 14, such that the needle shaft 28 extends along the length of the transparent catheter tube 14.
    [036] A needle guard 26 is movably disposed over the needle shaft 28 and retained in the catheter connector 12, in the state before use of the catheter apparatus 10 (as shown in Figure 1.) The needle guard 26 it has a base 44, a first arm 46, a second arm 48 and a distal wall 50. The distal wall 50 is disposed at a distal end of the first arm 46 and extends in a direction transverse to the axial direction A. A tensioning element 52, for example, a strip of silicone or rubber or the like, surrounds the first and second arms 46, 48.
    [037] With the removal of the needle 20 from the catheter tube 14 and the catheter connector 12, the needle shaft 28 moves relative to the needle guard 26, which is retained within the catheter connector 12, until the tip of the needle 30 is received in the needle guard 26. Once the needle tip 30 is received in the needle guard 26, the flare 32 of the needle shaft 28 engages with a locking means 38 provided near or near the base 44 of the needle guard 26, such that needle guard 26 can be pulled away from catheter connector 12, together with needle 20. An axial movement of needle 20 relative to needle guard 26 is now limited, as the distal wall 50 blocks the needle tip 30 and the engagement between the flare 32 and the base 44 of the needle guard 26 prevents the needle tip from being removed by the base 44, i.e. the needle tip 30 is securely enclosed. through the needle guard 26 as shown in Fig. 2.
    [038] Figs. 3 through 6 show needle guard 26 in greater detail.
    [039] As can be seen in Fig. 3A, the base 44 has a passage for the needle 56 that extends in an axial direction A from the proximal side 58 of the base 44, through the base 44, to a distal side 60 of base 44. Needle passage 56 is configured to receive proximal section 36 of needle shaft 28 and allow movement of needle shaft 28 relative to needle guard 26. For this reason, the diameter of needle passage 56 it is slightly larger than the outer diameter of the proximal section 36 of the needle shaft 28.
    [040] The first and second arms 46, 48 of the needle guard 26 extend generally in the axial direction A from the distal side 60 of the base 44, i.e. generally parallel to the needle shaft 28. The first arm 46 is formed without any recess on the outer side, so as to provide a high oblique force in case it is deflected, as shown in Figs. 4A or 4B. The oblique force acts such that the first arm 46 flexes backward from a position as shown in Figures 4A and 4B to the rest position shown in Figures 3A to 3D.
    [041] The outer surfaces 71 of the distal regions 62 of the first and second arms 46, 48 generally taper from the base 44 towards the distal wall 50. At their distal ends, the tapered surfaces 71 are bounded by protrusions or ledges 72 formed on the first and second arms 46, 48. The shoulders 72 and tapered surfaces 71 define the axial position of the tensioning element 52 and, in particular, prevent the tensioning element 52 from sliding axially out of the first and second arms. 46, 48.
    [042] The transverse distal wall 50 has a side 66 at its free end, in which a slot 70 is provided. The slot 70 extends in a direction generally parallel to the axial direction A and is used to guide the needle shaft 28.
    [043] Figs. 3A to 3D show that near the base 44, the needle guard has an inner recess 55. This inner recess 55 is provided to secure a tube-like floating washer 38 (see Figs. 4A, 4B), which is slidable into the along the needle shaft 20 and having an outer diameter that is substantially larger than the opening 45 (see Fig. 6) in the base 44. The inner diameter of the floating washer 38 is substantially smaller than the largest diameter of the nearby flare 32 to the tip of the needle. The recess 55 is limited at its distal end by a shoulder 57. In this way, a collar 45 formed by the base 44 and the shoulder 57 provide limiting means for movement of the floating washer 38. The floating washer 38 acts as a stopping means floating that prevents the needle shaft 28, when fully retracted, from protruding out of the needle guard 26.
    [044] As mentioned above, prior to the use of the catheter apparatus 10, the needle 20 extends along the catheter tube 14 and the needle guard 26 is disposed on the catheter connector 12. In this situation, the distal wall 50 of the needle guard 26 contacts needle 20, needle shaft 28 being guided in slot 70 on side 66 of distal wall 50. Needle shaft 28 thus supports distal wall 50, whereby the first arm 46 of the needle guard 26 is biased outwardly, i.e. away from the needle 20, against a restoring force from the tensioning element 52.
    [045] To hold needle guard 26 on catheter connector 12 while needle 20 is being removed from catheter tube 14, lugs 72 provided on both first arm 46 and second arm 48 of needle guard 26, if Engage with recesses 13 or with protrusions 15 or combinations thereof (Fig. 4A) provided on the inner peripheral surface of catheter connector 12. Protrusions 15 may form an annular ring that extends along the entire inner periphery of the catheter connector. catheter 12, or may form one or more annular segments that extend along only a respective portion of the inner periphery of catheter connector 12. Similarly, protrusions 13 may form an annular groove that extends along the entire inner periphery of catheter connector 12, or may form one or more segments of grooves that extend along only a respective portion of the inner periphery of catheter connector 12.
    [046] As shown in Figure 4B, the catheter connector 12 is possibly also formed with a through hole 17 that forms a window that provides sufficient space for a distal radial outer portion 47 of the first arm 46, in the region of the distal wall 50, such that in the ready position shown in Fig. 4B, the distal portion 47 can deviate to such an extent as to protrude into the opening formed by the through hole 17. The through hole 17 additionally provides a clamping function in order to prevent an axial movement of the needle guard 26.
    [047] Once the needle 20 has been withdrawn in such a way that the needle tip 30 has passed the distal wall 50 and is received between the first and second arms, the needle shaft 28 no longer supports the distal wall 50. This causes the first arm 46 to reposition itself in axial alignment with the needle 20 due to the restoring force acting on the first arm 46 in its offset state. The realignment of the first arm 46 is aided by the inherent oblique force of the first arm 46 and, additionally, through the use of the tensioning element 52. The realignment of the first arm 46 causes the lugs 72 to disengage from the recesses or protrusions in the catheter connector 12 allowing the needle guard 26 covering the needle tip 30 to be removed from the catheter connector 12, along with the needle 20, with the protected needle tip 30 disposed in a space 54 which is delimited by the base 44, by the first and second arms 46, 48, through distal wall 50 and tensioning member 52.
    [048] The stop element 38 is made of a material different from the material of the base 44, in particular a material that has a greater hardness and/or rigidity than the material of the base 44. Preferably, the stop element 38 is made of metal or ceramic, but it can be made of any other material that is rigid and cannot be easily bent.
    [049] The base 44 and the first and second arms 46, 48 of the needle guard 26 can be made of a plastic material, for example, by a molding process.
    [050] As mentioned above, the stop element 38 has a through hole 74 that has a circular cross section, with its diameter being slightly larger than the main diameter of the proximal section 36 of the needle shaft 28, so as to allowing movement of the proximal section 36 of the needle shaft 28 relative to the stop member 38. At the same time, the diameter of the through hole 74 is not only smaller than that of the passage of needle 56, but it is also smaller than that. the maximum dimension of the flare 32 of the needle shaft 28 so as to prevent the flare 32 from passing through the through hole 74.
    [051] Even in the case where excessive external force is applied to the needle 20 and/or the needle guard 26, the stop element 38 prevents the widening 32 of the needle shaft from being pulled through the needle passage 56 of the base 44. Thus, the stop element 38 improves the safety of the needle guard 26.
    [052] Fig. 7A shows a configuration of a needle 20 having a needle shaft 28, a needle tip 30 and a flare 32 formed by a bend. The bending is made by a local depression 33, in such a way that lateral projections 32 result from the crimping process. The crimping process is controlled in such a way that the inner cross-sectional area of the needle is not substantially reduced, such that the passage is not affected.
    [053] Fig. 7B shows the needle according to fig. 7A, however with a slit 35 disposed slightly distally from the flare 32 such that it is still disposed within the catheter tube in the ready position. Slit 35 extends only about 0.5 mm in the axial direction and provides a through hole through the needle wall. In this way an early blood reflux function in the clear catheter tube 14 can be obtained when the needle is positioned in the patient's vein. Based on this backflow of blood the physician can see, immediately after the patient has been pierced, if the needle has been positioned correctly, due to a small amount of patient blood that floods the space between the needle shaft 28 and the catheter tube 14 transparent.
    [054] Fig. 7C shows the needle according to fig. 7B, however, with slit 35 disposed proximally to flare 32. Slit 35 is sized such that it does not affect the operation of needle guard 26.
    [055] Although the present invention has been disclosed in the context of certain preferred embodiments and examples, it should be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to encompass other configurations and/or alternative uses of the invention and modifications obvious ones and their equivalents. Thus, from the foregoing description, it will be evident to a person skilled in the art that many changes and modifications can be made without departing from the spirit or scope of the invention as set out herein.
    [056] Therefore, it is not intended that the scope of the foregoing description be limited to the exact description as defined above, but that this description may be interpreted as encompassing all patentable novelty features that reside in the present invention, including all features and settings that would be treated as their equivalents by those skilled in the relevant art. Thus, it is intended that the scope of the present invention described herein is not the particulars disclosed above, only by a fair reading of those limited by the embodiments but determined by the appended claims.
    权利要求:
    Claims (14)
    [0001]
    1. INTRAVENOUS CATHETER DEVICE (10), comprising: a needle (20) having a needle shaft (28), a needle tip (30) at the distal end (34) of the needle shaft (28) and a needle connector (42) mounted on the proximal end (36) of the needle shaft (28), an intravenous catheter tube (14) mounted on a catheter connector (12), and a needle guard (26) movable on the needle shaft. needle (28), wherein the needle guard (26) comprises: a base portion (44) having a needle passage (56) extending in an axial direction (A) from a proximal side ( 58) from the base portion (44) through the base portion (44) to a distal side (60) of the base portion (44), first and second arms (46, 48) extending in the axial direction (A) to from the distal side (60) of the base portion (44) and a distal wall (50) which is positioned transversely to a distal region of the first arm (46), wherein a stop element (38) for interrupting the movement of the stem of needle (28) in relation to the needle guard (26) is received in a recess (55) located in the needle guard (26) characterized by the stop element (38) being loosely positioned on the needle (20) between the two arms (46, 48) of the needle guard (26) and floats in the recess (55) of the needle guard (26) on the needle shaft (28), wherein the recess (55) is limited, at its distal end, by a shoulder (57), wherein the base base (44) and the shoulder (57) form a ring (45) which limits the floatation of the stop element (38).
    [0002]
    2. INTRAVENOUS CATHETER DEVICE (10), according to claim 1, characterized in that the needle shield (26) is made of a first material and wherein the stop element (38) is made of a second material different from the first material wherein, preferably, the second material is of greater hardness and/or rigidity than the first material.
    [0003]
    3. INTRAVENOUS CATHETER DEVICE (10) according to claim 1 or 2, characterized in that the stop element (38) has a through hole (74) with a profile which is adapted to the main external profile of the needle shaft ( 28) wherein preferably the diameter of the through hole (74) is slightly larger than the main outer diameter of the needle (20).
    [0004]
    4. INTRAVENOUS CATHETER DEVICE (10), according to any one of claims 1 to 3, characterized in that the stop element (38) is formed by a washer, a cylindrical tubular body or a body having a polygonal cross section and/or wherein the stop member (38) is preferably positioned so that its through hole (74) is aligned with the needle passage (56) of the needle guard (26).
    [0005]
    5. INTRAVENOUS CATHETER DEVICE (10) according to any one of claims 1 to 4, characterized in that the stop element (38) can be secured by means of retaining means in relation to the needle guard (26).
    [0006]
    6. INTRAVENOUS CATHETER DEVICE (10), according to any one of claims 1 to 5, characterized in that the needle (20) has an enlargement (32) located between the distal section (34) and the proximal section (36) of the nail of needle (28) wherein, in particular, the flare (32) has an external profile in which a dimension thereof is greater than a maximum dimension of the profile of the through hole (74) of the stop element (38) and/ or wherein the widening (38) is made by crimping the needle shaft (28).
    [0007]
    7. INTRAVENOUS CATHETER DEVICE (10) according to any one of claims 1 to 6, characterized in that the needle (20) is formed with an opening (35) near the tip of the needle (30), wherein the opening (35 ) is located within the catheter tube (14) when the needle of the intravenous catheter device (10) is in a ready position.
    [0008]
    8. INTRAVENOUS CATHETER DEVICE (10), according to claim 6 or 7, characterized in that the opening (35) is positioned distally or proximally to the enlargement (32) wherein, preferably, the opening (35) extends in the direction axial (A) for a distance of 0.3 mm to 1 mm.
    [0009]
    9. INTRAVENOUS CATHETER DEVICE (10) according to any one of claims 1 to 8, characterized in that it further includes a tensioning element (52) that applies a tensioning force to the first and second arms (46, 48) of the protector of needle (26) wherein, in particular, the tensioning member at least partially surrounds the first and second arms (46, 48) of the needle guard (26) and/or wherein preferably the member tensioning (52) helps to enclose a space (54) between the first and second arms (46, 48).
    [0010]
    10. INTRAVENOUS CATHETER DEVICE (10) according to any one of claims 1 to 9, characterized in that the needle guard (26) provides a guide groove (70) on one side (66) of the distal wall (50), a groove (70) extending in the axial direction (A) of the needle shaft (28).
    [0011]
    11. INTRAVENOUS CATHETER DEVICE (10) according to any one of claims 1 to 10, characterized in that the catheter connector (12) includes a retaining means (13, 15) for securing the needle guard (26) against forces of retraction wherein, preferably, the retaining means (13, 15) includes a recess (13) or a protrusion (15) formed on the inner circumferential surface of the catheter connector (12) adapted to engage with a protrusion (72 ) or recess formed in the first arm (46) of the needle guard (26).
    [0012]
    12. INTRAVENOUS CATHETER DEVICE (10) according to claim 11, characterized in that the retaining means includes at least one outer arm formed on the base portion (44) and adapted to couple to the catheter connector (12) thereon. outer circumferential surface wherein, in particular, the retaining means includes two outer arms formed over diametrical locations of the base portion (44) and adapted to engage the catheter connector (12) on its outer circumferential surface.
    [0013]
    13. INTRAVENOUS CATHETER DEVICE (10) according to any one of claims 1 to 12, characterized in that the catheter connector (12) provides an opening (17) so as to provide additional space for the first arm (46) deflected in the ready position wherein preferably the opening (17) is formed as a through hole through the circumferential wall of the catheter connector (12) and/or wherein preferably the opening (17) provides a retaining edge which acts as the retaining means to retain the needle guard (26) within the catheter connector (12).
    [0014]
    NEEDLE GUARD (26) in particular adapted to be used in an intravenous catheter device (10) as defined in any one of claims 1 to 13, the needle guard (26) including: a base portion (44) having a needle passage (56) extending in an axial direction (A) from the proximal side (58) of the base portion (44) through the base portion (44) to one side. distal (60) of the base portion (44), first and second arms (46, 48) extending in the axial direction (A) from the distal side (60) of the base portion (44) and a distal wall (50) which is positioned transversely in a distal region of the first arm (46), wherein a stop element (38) for interrupting movement of the needle shaft (28) relative to the needle guard (26) is received in a recess ( 55) located on the needle shield (26), characterized by the stop element (38) being loosely positioned between the two arms (46, 48) of the needle shield lha (26) and floats in the recess (55) of the needle guard (26), wherein the recess (55) is limited, at its distal end, by a shoulder (57), and wherein the base portion (44) and the shoulder (57) forms a ring (45) which limits the buoyancy of the stop element (38).
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    同族专利:
    公开号 | 公开日
    IN2012DE00486A|2015-06-05|
    KR102004938B1|2019-07-29|
    JP6200904B2|2017-09-20|
    CN104203327A|2014-12-10|
    EP2817060B1|2017-06-21|
    AU2013223740B2|2015-11-26|
    BR112014020813A2|2019-08-27|
    KR20140127329A|2014-11-03|
    CN104203327B|2017-10-17|
    WO2013124765A1|2013-08-29|
    AU2013223740A1|2014-09-25|
    US9636484B2|2017-05-02|
    SG11201404973WA|2014-09-26|
    ZA201406459B|2016-02-24|
    JP2015507999A|2015-03-16|
    EP2817060A1|2014-12-31|
    US20150328438A1|2015-11-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5558651A|1990-04-20|1996-09-24|Becton Dickinson And Company|Apparatus and method for a needle tip cover|
    US6203527B1|1994-03-29|2001-03-20|Filiberto P. Zadini|Bi-directional clamping guard for needle stick protection|
    ITBO20010497A1|2001-07-31|2003-01-31|Delta Med S R L|PROTECTION DEVICE FOR NEEDLE-CANNULA|
    KR20060130653A|2004-02-13|2006-12-19|스미스 메디칼 에이에스디, 인크.|Needle tip protector|
    GB0405234D0|2004-03-09|2004-04-21|Id Tech Ltd|Syringe safety device|
    US7112191B2|2004-06-15|2006-09-26|Neha Daga|Needle safety device for an intravenous catheter apparatus and method of use|
    DE202007009977U1|2007-07-17|2007-11-08|Poly Medicure Ltd.|Needle securing device for an intravenous catheter device|
    DE602007009821D1|2007-07-17|2010-11-25|Poly Medicure Ltd|A safety needle assembly|
    CN102083488B|2008-03-17|2014-10-29|波利医疗有限公司|Needle safety device|
    EP2251057B1|2008-05-28|2012-07-11|Poly Medicure Ltd.|Catheter introducer|
    JP2012508616A|2008-11-12|2012-04-12|アクセスサイエンティフィック、インク．|Access device|
    ES2641946T3|2009-09-22|2017-11-14|Poly Medicure Limited|An improved needle tip protector|
    UA103572C2|2010-04-16|2013-10-25|Поли Медикьюе Лимитед|Catheter apparatus|
    SG185127A1|2010-05-05|2012-12-28|Poly Medicure Ltd|Needle safety device for medical devices|
    WO2012038899A1|2010-09-21|2012-03-29|Poly Medicure Limited|Needle tip guard for intravenous catheter assembly|
    US8486024B2|2011-04-27|2013-07-16|Covidien Lp|Safety IV catheter assemblies|AT424879T|2005-07-06|2009-03-15|Vascular Pathways Inc|DEVICE FOR INTRAVENOUS CATHETER INTRODUCTION AND USE METHOD|
    AT548972T|2007-05-07|2012-03-15|Vascular Pathways Inc|INTRAVENOUS CATHETER INTRODUCTION AND BLOOD SPECIMENS|
    US8323249B2|2009-08-14|2012-12-04|The Regents Of The University Of Michigan|Integrated vascular delivery system|
    US10384039B2|2010-05-14|2019-08-20|C. R. Bard, Inc.|Catheter insertion device including top-mounted advancement components|
    US8932258B2|2010-05-14|2015-01-13|C. R. Bard, Inc.|Catheter placement device and method|
    US9950139B2|2010-05-14|2018-04-24|C. R. Bard, Inc.|Catheter placement device including guidewire and catheter control elements|
    USD903101S1|2011-05-13|2020-11-24|C. R. Bard, Inc.|Catheter|
    US9872971B2|2010-05-14|2018-01-23|C. R. Bard, Inc.|Guidewire extension system for a catheter placement device|
    USD903100S1|2015-05-01|2020-11-24|C. R. Bard, Inc.|Catheter placement device|
    WO2011146769A2|2010-05-19|2011-11-24|Tangent Medical Technologies Llc|Integrated vascular delivery system|
    WO2011146772A1|2010-05-19|2011-11-24|Tangent Medical Technologies Llc|Safety needle system operable with a medical device|
    US8690833B2|2011-01-31|2014-04-08|Vascular Pathways, Inc.|Intravenous catheter and insertion device with reduced blood spatter|
    ES2750035T3|2011-02-25|2020-03-24|Bard Inc C R|Medical component insertion device including a retractable needle|
    KR20150020666A|2012-06-19|2015-02-26|폴리 메디큐어 리미티드|Needle guard|
    CN108607150B|2013-01-30|2021-01-12|血管通路股份有限公司|Systems and methods for venipuncture and catheter placement|
    IN2013DE03088A|2013-10-17|2015-04-24|Poly Medicure Ltd|
    CA2937744A1|2014-02-04|2015-08-13|Icu Medical, Inc.|Self-priming systems and methods|
    CN106456934B|2014-04-28|2020-04-28|威格米德公司|Catheter instrument and catheter hub thereof|
    US10232146B2|2014-09-05|2019-03-19|C. R. Bard, Inc.|Catheter insertion device including retractable needle|
    CN113350614A|2015-05-15|2021-09-07|C·R·巴德股份有限公司|Catheter placement device including extendable needle safety feature|
    US10493262B2|2016-09-12|2019-12-03|C. R. Bard, Inc.|Blood control for a catheter insertion device|
    USD857194S1|2017-01-25|2019-08-20|Becton, Dickinson And Company|Needle tip shield|
    EP3597258A4|2017-03-16|2021-03-03|Terumo Kabushiki Kaisha|Catheter assembly|
    EP3919110A3|2017-03-24|2021-12-22|Poly Medicure Limited|A fluid administration medical apparatus|
    US10946176B2|2017-04-06|2021-03-16|Becton, Dickinson And Company|Intravenous catheter assembly with safety clip|
    USD921884S1|2018-07-27|2021-06-08|Bard Access Systems, Inc.|Catheter insertion device|
    法律状态:
    2019-09-17| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-26| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-01-26| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2021-06-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/02/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    IN486DE2012|IN2012DE00486A|2012-02-21|2012-02-21|
    IN486/DEL/2012|2012-02-21|
    PCT/IB2013/051158|WO2013124765A1|2012-02-21|2013-02-13|Catheter apparatus|
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