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    • 专利摘要:
    NEEDLE PROTECTION DEVICE AND SECURITY NEEDLE ASSEMBLY. The present invention relates to a needle protection device and a safety needle assembly. The needle protection device comprises a connecting element and a protection arm that rotates with respect to the protection element. A pair of clamping members are respectively disposed at the distal end of the guard arm and the connecting element and engage each other in a non-retractable manner. A pair of positioning arms are disposed respectively at the proximal end of the guard arm and the connecting element and are provided with at least one pair of additional snap-on fasteners. Quick-fit fasteners snap together in a detachable manner. The needle protection device and safety needle assembly according to the present invention not only safely prevent medical instruments such as syringes from causing accidental needle punctures after use and ensure their correct disposal, but also have a structure. simple and low cost. Furthermore, according to the present invention, the needle protection device (...).
    公开号:BR112014004893B1
    申请号:R112014004893-2
    申请日:2012-08-28
    公开日:2021-05-11
    发明作者:Zuoqian Lin
    申请人:Sol-Millennium Medical Hk Limited；
    IPC主号:
    专利说明:

    Technical Field of the Invention
    [001] The present invention concerns a needle protection device. More specifically, the present invention relates to a needle protection device which can prevent a needle used in such medical instruments as a syringe and blood collection lancet from causing accidental puncture after use. Furthermore, the present invention relates to a needle guard assembly comprising said needle guard device. Background of the Invention
    [002] Pointed-needle medical instruments such as syringes and lancets for blood collection are extensively used in medical practice. These medical instruments are used and treated not only by healthcare professionals, but also by lay people at home, for example, by patients with diabetes who inject insulin on their own.
    [003] Such a medical instrument as a syringe can leave your needle exposed after use and stick people involved, which significantly hinders its collection and treatment. Needle punctures can cause bacterial infections.
    [004] To prevent the occurrence of accidental needle punctures, syringes equipped with needles capable of retracting after use have been proposed. However, such syringes are structurally complex and expensive. Invention Summary
    [005] Therefore, to prevent medical instruments such as syringe and lancet for blood collection, equipped with a needle and simple and low-cost structure, from causing accidental punctures after use, the present invention provides, in one aspect, a device for needle shield comprising a connecting element that fits a needle hub, a shield arm that receives the needle hub and a hinge. The linkage is connected between the connecting element and the guard arm so that the guard arm rotates relative to the connecting element. The needle guard device further comprises a pair of gripping members disposed at the proximal end of the guard arm and the connecting element, respectively.
    [006] When the guard arm rotates towards the full guard position where it is as close as possible to the needle tube with respect to the connecting element, the pair of clamp members is configured to engage in a non-retractable manner. Preferably, the needle guard device further comprises a pair of positioning arms disposed at the proximal end of the guard arm and the connecting element, respectively. At least one pair of snap-on fasteners is disposed on said pair of positioning arms. Said pair of quick-fit fasteners snap together releasably when the protective arm pivots towards at least an intermediate position relative to the connecting element, wherein the intermediate position is away from the needle tube with in relation to the full guard position, such that, in the intermediate position, the pair of fastening members is in a non-engaging position, i.e. said pair of fastening members does not non-retractably fit together.
    [007] In yet another aspect of the present invention, there is provided a protective needle assembly comprising a needle and said needle protective device. The needle comprises a needle tube and a needle hub. The needle hub may comprise a cone-shaped piece and a needle-receiving piece located in the center position of the upper end of the cone-shaped piece. The cone-shaped part has a conical cavity or conical fitting (female fitting) to fit the nozzle or conical fitting (male fitting) of the syringe barrel to secure the needle hub to the syringe barrel. A hole for receiving the needle tube is disposed within the needle-receiving part. The needle hub further comprises a plurality of ribs which are connected between the upper edge of the conical piece and the circumferential surface of the needle-receiving piece in order to suspend the needle-receiving piece. The front end of the rib extends radially outward to form a protrusion.
    [008] According to the present invention, the pair of positioning arms comprises a first positioning arm and a second positioning arm which are located on the same side of the first and second fastener member and fit together.
    [009] Preferably, the needle protection device may comprise two pairs of positioning arms symmetrically located on either side of the pair of gripper members. The pair of fastener members may comprise: a first fastener member comprising a first column-shaped element and an anchor disposed on the first column-shaped element; and a second fastening member comprising one or more paw-shaped pieces disposed at the edge of a through hole. Said piece or pieces in the shape of a fluke extend towards the center of the through hole. The distal ends of the paw-shaped pieces or the distal ends of the paw-shaped pieces and the edge of the through hole whose maximum radial dimension is less than the maximum radial dimension of the base of the anchor, with one or more paw-shaped pieces are arranged in such a way that the distal ends of the paw-shaped pieces pass through the through hole and secure the base of the anchor in a non-retractable manner when the guard arm rotates towards the full guard position.
    [010] The first clamping member can be disposed at the distal end of the guard arm. The second fastening member can be disposed on the connecting element. The through hole can be arranged in the connecting element. The paw-shaped pieces are arranged at the edge of the through hole and extend towards the center of the through hole and slope toward the side opposite the side on which the first fastening member is located, so that when the guard arm rotates towards the full guard position, the front end of the anchor can pass through the through hole and beyond the fluke parts and its base is held by the fluke parts in a non-retractable manner.
    [011] Or the first fastening member can be disposed on the connecting element and the second fastening member can be disposed at the proximal end of the guard arm. The through hole can be arranged at the proximal end of the guard arm. The para-shaped pieces are arranged at the edge of the through hole and extend towards the center of the through hole and slant towards the side opposite the side on which the first fastener member is located, so that when the guard arm rotates towards the full guard position, the front end of the anchor can pass through the through hole and beyond the fluke parts and its base is held by the fluke parts in a non-retractable manner.
    [012] The first fastener member may further comprise a second column-shaped element between the anchor and the first column-shaped element whose maximum radial dimension is less than that of the first column-shaped element. The anchor is an extensive portion of the tip, the maximum radial dimension of the base of the anchor being greater than that of the second column-shaped element.
    [013] In yet another embodiment of the present invention, the pair of fastener members may comprise a first fastener member provided with a hook-shaped element at its free end and a second fastener member having the shape of a plate-shaped hook, wherein the hook-shaped element of the first fastening member and the second fastening member engage each other in a non-retractable manner when the guard arm pivots towards the full guard device.
    [014] Preferably, the first fastening member can be arranged at the proximal end of the guard arm and the second fastening member can be disposed on the connecting element.
    [015] In yet another modality, the first fastener member may have the shape of a plate and be disposed at the proximal end of the protection arm, with the hook-shaped element being disposed on each of the two opposite thick surfaces of its free end. The needle protection device may comprise two pairs of positioning arms symmetrically located on either side of the first gripping member. The positioning arm of each pair of clamping arms disposed on the connecting element is arranged with a second clamping member. The two hook-shaped elements of the first fastening member and the two second fastening members engage each other in a non-retractable manner when the guard arm rotates towards the full guard device.
    [016] Preferably, the transverse dimension can gradually increase from the free end of the first fastener member to the hook-shaped element.
    [017] Preferably, an additional hook-shaped element is disposed on a transverse surface of the free end of the first fastener member, an additional second fastener member is disposed on the connecting element, so that the three hook-shaped elements of the first clamping member respectively engage the three second clamping members in a non-retractable manner when the guard arm rotates towards the full guard position.
    [018] According to the present invention, each pair of positioning arms may comprise a first positioning arm and a second positioning arm. The first protrusion can be arranged at one end of the second positioning arm which extends towards the first positioning arm, a first cavity can be arranged in the path of movement of the first positioning arm with respect to the first protrusion. The first protrusion fits into the first cavity separately to position the guard arm in the intermediate position (first use position). Therefore, the first protrusion and the first cavity constitute the first pair of quick-fit fasteners.
    [019] A second cavity can be additionally arranged in the path of movement of the first positioning arm with respect to the first protrusion. The first protrusion snaps into the second cavity detachably to position the guard arm in a second intermediate position (mounted position). Therefore, the first protrusion and the second cavity constitute the second pair of snap-on fasteners.
    [020] The second positioning arm may comprise a second upper positioning arm and a second lower positioning arm. The first protrusion may be disposed at one end of the second upper positioning arm which extends towards the first positioning arm. The first protrusion engages the first cavity and the second cavity in turn when the guard arm rotates towards the full guard position with respect to the connecting element.
    [021] A second protrusion may be disposed on the lower edge of the second lower positioning arm. At least a third cavity is arranged in the path of movement of the first positioning arm relative to the second protrusion. The second protrusion snaps into the third cavity in a detachable manner in order to position the guard arm in a third intermediate position (second wearing position). Therefore, the second protrusion and the third cavity constitute the third pair of snap-on fasteners.
    [022] A fourth cavity can be additionally arranged in the path of movement of the first positioning arm relative to the first protrusion. The first protrusion fits the fourth cavity separably in order to position the guard arm in a fourth intermediate position (temporary guard position) adjacent to the full guard position. When the guard arm rotates in relation to the temporary guard position, the needle tube is located in the opening of the guard arm and the first clamping member and second clamping member are in an unengaged position where the clamping members do not fit on the second fastener members in a non-retractable manner.
    [023] The safety needle assembly according to the present invention may further comprise a needle cap to receive and cover said needle tube, the lower end of the needle cap being arranged around the element that receives the needle. The needle cover may comprise two flanges disposed on the inner surface of the lower end of the needle cover so that an annular groove is formed between the two flanges. The rib projections releasably engage the groove, thereby preventing the needle cap from moving axially with respect to the needle.
    [024] The needle protection device and safety needle assembly according to the present invention not only safely prevent medical instruments such as syringes from causing accidental punctures after use and ensure the correct disposal of such medical instruments, but also have a simple, low-cost structure. Additionally, in accordance with the present invention, during transport and use of the safety needle assembly, the needle protection device can be stably positioned in various desired positions. Brief Description of Drawings
    [025] The figures that make up the present patent application will be described below: Figure 1 is a cross-sectional view of the safety needle assembly according to an embodiment of the present invention, with the protection arm in the state mounted. Figure 2 is a cross-sectional view of the safety needle assembly according to Figure 1, with the guard arm in the first use position. Figure 3 is a cross-sectional view of the safety needle assembly according to Figure 1, with the guard arm in the second wearing position. Figure 4 is a cross-sectional view of the safety needle assembly according to Figure 1, with the guard arm in the temporary guard position. Figure 5 is a cross-sectional view of the safety needle assembly according to Figure 1, with the guard arm in the full guard position. Figure 6 is a perspective view of the needle hub and needle protection device according to Figure 1, seen obliquely from above. Figure 7 is a perspective view of the needle hub and needle protection device according to Figure 1, seen from below. Figure 8 is a side view of the needle hub and needle protection device according to Figure 1. Figure 9 is a top view of the needle hub and needle protection device according to Figure 1. Figure 10 is a right side view of the needle hub and needle protection device according to Figure 9. Figure 11 is a left side view of the needle hub and needle protection device according to Figure 9. Figure 12 is a bottom view of the needle hub and needle protection device according to Figure 9, with a cutaway part. Figure 13 is a cross-sectional view of the needle cap according to Figure 1. Figure 14 is a bottom view of the needle cap according to Figure 13. Figure 15 is a cross-sectional view of the needle cap. needle analogous to Figure 13, with the needle cap turned at an angle. Figure 16 is a perspective view of the needle protection device according to a further embodiment of the present invention. Figure 17 is a top view of the needle protection device as shown in Figure 16. Figure 18 is a bottom view of the needle protection device as shown in Figure 16. Figure 19 is a cross-sectional view along the line AA of Figure 17. Figure 20 is a schematic view of the needle guard device without positioning arms. Detailed Description of Preferred Modalities
    [026] The preferred embodiments of the needle protection device and the safety needle assembly comprising said needle protection device will be described below with reference to the accompanying drawings.
    [027] Figure 1 demonstrates the safety needle assembly according to the present invention in the assembled state before use. The safety needle assembly comprises a needle (10), a needle protection device and a needle cover (16).
    [028] The needle (10) comprises a needle hub (12) and a needle tube (11) mounted on the needle hub (12). In some applications such as injectors or syringes, the needle (10) is also called the “injection needle”, and the needle tube (11) is also called the “needle”. The present invention is not intended to improve needle 10 per se. Therefore, various needles known in the art that need protection after use could be used to construct the safety needle assembly in accordance with the present invention. The safety needle set according to the present invention may be, but is not limited to, a blood collection set, a safety needle set, an insulin delivery safety set, a single wing butterfly needle set or double needle (or called “scalp” needle).
    [029] With respect to Figures 6, 8, 9 and 11, in an embodiment of the present invention, the needle hub (12) comprises a cone-shaped piece (121). The conical part (121) has a conical fitting (female fitting) to fit the conical fitting (male fitting) (14) of the syringe barrel (15) in order to secure the needle hub (12) to the syringe barrel ( 15). In the central position of the upper end of the conical piece (121), the needle hub (12) further comprises a needle-receiving element (123), suspended by a plurality of ribs (122). An internal needle-receiving hole (11) is disposed within the needle-receiving element (123). The multiple ribs (122) can be symmetrically arranged and connected between the upper edge of the conical piece (121) and the outer circumferential surface of the element (123) receiving the needle. Although only four ribs are shown in the figures, it is evident that the present invention is not limited to that amount of ribs. A front end (i.e., the inwardly facing end of the needle cap (16) of the rib (122) expands radially outward to form a protrusion 124).
    [030] With reference to Figures 13 - 15, the needle cover (16) is a hollow member that receives and covers the needle tube (11). The lower end of the needle cover (16) (i.e. the end of the needle cover having an opening) is disposed around the needle receiving member (123), and two flanges (163) and (163) are disposed on the inner surface of the needle cap, the first flange (162) being closest to the lower end. The second flange (163) further from the lower end may be larger than the first flange to abut the front end of the rib (122). An annular groove (165) is disposed between the first flange (162) and the second flange (163). The protrusion (124) of the rib (122) passes over the first flange (162) and engages the groove (165) thereby preventing axial movement of the needle cover (16) relative to the needle hub (12) and preventing the needle cover (16) from separating by accident from the needle hub (12) in the axial direction during transport. When in use, a slight force can be applied so that the protrusion (124) separates from the groove (165) and passes over the first flange (162), thereby removing the needle cap (16).
    [031] According to the present invention, the detachable quick fit means that two quick fit fasteners like the flange and groove described above and the protrusion and recess described below fit together and can be disengaged from each other when applying an adequate strength.
    [032] Those skilled in the art will understand that the safety needle assembly according to the present invention is not limited to the inclusion of the needle cover and needle hub described above and may employ various types of needle hubs and needle covers known in the art. The main objective of the present invention is not to improve the needle hub and the needle cap.
    [033] With respect to Figures 6-12, especially Figure 6, the needle protection device comprises a connecting element (2) that fits into the needle hub (12) and a protection arm (6) that fits from swivelly on the connecting element (2) by means of a hinge (4).
    [034] The connecting element (2) can fit fixedly into the needle hub (12) by one of the known methods. For example, the connecting element (2) can be formed integrally together with the tapered part (121) of the needle hub (12) by injection molding, extend outwardly and flare out from one side. of the conical part (121) in order to form other structures in the connecting element.
    [035] Alternatively, the connecting element (2) is fixedly arranged around the outer circumferential surface of the needle hub (2) by means of a ring member (not shown). This embodiment is advantageous because the needle protection device according to the present invention can be applied directly to safety needle assemblies.
    [036] The connecting element (2) can engage any desired position of the needle hub 12. For example, the connecting element may engage a position of the conical piece (121) adjacent to the needle receiving element (see Figure 8), thereby reducing the length of the guard arm.
    [037] The joint (4) that pivotally connects the connecting element (2) to the protection arm (6) can be any one of several types of joints known in the art; preferably, a joint manufactured through the injection molding process, such as a weakened structure. In the preferred embodiment, as shown in the figures, the hinge (4) is an integral part of the connecting element (2), or the hinge (4) is part of the connecting element (2). With respect to Figures 6 and 7, the connecting element (2) has the shape of a fork or letter "Y". Two fork ends can be formed in articulation (4), forming a weakened part at each fork end. Alternatively, the hinge (4) could be an integral part of the guard arm 6. Again, alternatively, the hinge (4) could be a single piece and its two ends fit fixedly into the connecting element (2) and the protective arm (6), respectively, in the subsequent manufacturing procedure.
    [038] The protection arm (6) rotates in relation to the needle hub (12) through the articulation (4) and is held in one of several desired positions, for example, the full protection position closest to the tube of the needle (11), as shown in Figure 5, and from the first intermediate position to the fourth median position farthest from the needle tube (11), as shown in Figures 1-4.
    [039] Figure 5 demonstrates the safety needle assembly after use, with the protection arm (6) rotating towards the position closest to the needle tube (11), that is, the full protection position, in which the complete needle tube is received.
    [040] Figure 2 and Figure 3 demonstrate two states of use of the safety needle set, in which the needle cover (16) is removed, the protection arm (6) rotates towards the furthest position from the tube of the needle (11) (or adjacent to the syringe needle (15)), i.e. a position of use. According to different applications, the protection arm (6) can have several different use positions, for example, in the use position shown in Figure 2 (the first use position or the first intermediate position), the protection arm ( 6) can be at an angle of 20° with respect to the horizontal direction; in the position of use shown in Figure 3 (the second position of use or the third intermediate position), the protection arm (6) can be open towards the end, that is, in an extreme position away from the needle tube (11 ) (or towards the barrel of the syringe (15)).
    [041] Figure 1 demonstrates the safety needle assembly in the assembled state before use where the needle cover (16) covers the needle tube (11) and the guard arm (6) is in an adjacent position to the needle tube (11) (or the needle cap (16)), ie the mounted position (the second intermediate position). It should be noted that the more adjacent to the needle tube (11) (or the needle cover (16)) the protective arm (6) is, the more mounted space can be saved.
    [042] Figure 4 demonstrates the state of the safety needle set after the liquid drug is withdrawn and then transported, that is, a state in which the liquid drug, after being withdrawn by the safety needle set, is transported from a place to the other. At this time, the needle tube (11) is covered by the protection arm (6), but it is found only in the opening of the protection arm, that is, the protection arm (6) is in a protection position temporary (the fourth intermediate position). It can be seen that the temporary guard position is between the full guard position and the mounted position.
    [043] Referring to Figures 6-9, the protective arm (6) is an arm-shaped structural member, generally having a cross-section in the shape of a letter "U" and extending along the axis longitudinally, and comprises a lower guard wall (63) and a pair of side guard walls (61) extending from opposite sides of the lower guard wall (63). According to the present invention, the side of the shield arm (6) that is adjacent to the needle hub that is in use is called "proximal side" while the side away from the needle hub is called "distal side". The lower shield wall (63), the pair of side shield walls (61) and the first end wall (proximal end) and the second end wall (64) located respectively on the proximal side and the distal side , form the opening (60) of the protection arm (6).
    [044] To facilitate description according to the present invention, the direction in which the guard arm (6) moves to the full guard position shown in Figure 5 in relation to the connecting element (2) (or the hub of the needle (12)) is called the "first direction" of the guard arm, and the direction in which the guard arm (6) rotates to the second position of use shown in Figure 3 is called the "second direction" of the guard arm .
    [045] As clearly shown in Figure 8, the side protection wall (61) of the protection arm (6) comprises the first side protection wall (611) on the distal side, and the second side protection wall (612) on the proximal side, and the third side guard wall (613) between the first and the second side guard wall. The first side guard wall (611) protrudes further in the first direction with respect to the second side guard wall (612) or the first side guard wall (611) is positioned beyond the second side guard wall (612) in the first direction. The third side guard wall (613) moves from the second side guard wall (612) to the first side guard wall (611) along the first direction. Preferably, this displacement is a smooth displacement as shown in Figure 8. However, this displacement should not necessarily be smooth.
    [046] The lower protective wall (63) of the guard arm (6) comprises a first lower guard wall (631) on the distal side, a second lower guard wall (632) on the proximal side and a third guard wall (633) between the first and second lower protective wall. The first lower guard wall (631) protrudes further in the first direction with respect to the second lower guard wall (632) or the first lower guard wall (631) is positioned beyond the second lower guard wall (632) in the first direction. The third lower guard wall (633) moves from the second lower guard wall (632) to the first lower guard wall (631) along the first direction.
    [047] The first side protection wall (611) and the first lower protection wall (631) are positioned beyond the second side protection wall (612) and the second lower protection wall (632) in the first direction so that between the proximal part of the guard arm (6) and the needle hub, sufficient space is provided to arrange a clamping member and a positioning arm (to be described in detail below).
    [048] It should be noted that the division above the side protection wall and the lower protection wall is used for descriptive purposes only and is not to say that the parts of the side protection wall and the lower protection wall are physically separate from one another. on the other.
    [049] According to the example shown in Figure 8, the third lower protective wall (633) forms a step between the first lower protective wall and the second lower protective wall (631, 632). Said third step-shaped lower guard wall (633) provides a surface on which the finger applies force to push the guard arm (6).
    [050] As shown in Figures 6 to 9, a flange (65) is disposed on each of both outer sides of the second lower guard wall (632) and the third lower guard wall (633). In one embodiment of the present invention, the flange (65) may be an integral part of the second lower guard wall (632) and the third lower guard wall (633). The flange (65) can be used to safely push and press the protective arm (6) from the position shown in Figure 1 or 4 to the position shown in Figure 2 or 3, for example, as a clamping piece to from the mounted position to the position of use after removing the liquid medicine. In addition, the flange (65) further increases the area of the third lower protective wall (633) as a force-applying surface. The first end wall (62) can extend to both sides in order to deflate along with the edge of the flange (65).
    [051] A friction-enhancing structure such as non-slip ribs (634) can be incorporated into a surface of the second lower guard wall (632) as shown in the figures.
    [052] In a preferred embodiment, all edges of the respective walls and all joints of adjacent walls may be chamfered or threaded.
    [053] Figure 5 demonstrates that when the protection arm (6) rotates towards the full protection position, the tube (11) of the needle (10) passes through the opening (60) of the protection arm (6) to inside the protective arm (6). To prevent the needle tube (11) from being separated from the guard arm (6) (see Figures 5, 6, 9 and 11), the guard arm (6) may further comprise a hook-shaped element (66 ) which extends a predetermined distance from the first lower guard wall (631) in the first direction and then slopes towards the first lower guard wall (631). Due to this hook-shaped member (66), the needle tube (11) can be easily guided into the space between the hook-shaped member (66) and the first lower protective wall (631), " hooked" by the hook member (66) and held in this space in a non-retractable manner.
    [054] In a further preferred embodiment, the protection arm (6) may comprise two or more hook-shaped members (66) (two are shown in the figures). Said hook-shaped members (66) are arranged in the longitudinal direction of the protective arm (6) so that their "hooks" are oscillatingly opposed to each other. Said opposite oscillating arrangement facilitates more precise guidance of the needle tube (11).
    [055] In another preferred embodiment relating to Figures 5, 6, 9 and 11, a pair of guide ribs (68) provided with a guide ramp at its upper end can be arranged along the inside of the two first walls guard (611) in order to retain the needle tube (11) in the position of the hook member (66). This mode is especially suitable for a situation where the needle tube (11) deforms after use.
    [056] With reference to Figures 6, 7, 9 and 12, the first fastener member (51) extending to the proximal side is disposed on the surface facing the proximal side of the proximal end (62). According to the modality shown in the figures, the first clamping member (51) is shaped like a column and is located on the longitudinal axis of the protection arm (6), comprising a first element in the form of a column (57) at the proximal end. (62), a second column-shaped element (56) which extends from the first column-shaped element (57) to the proximal side and has its radial dimension reduced (eg diameter), and a tapered anchor (55) disposed on the proximal side of the second column-shaped element (56) with the tip end (front end) facing the proximal side. The base of the anchor (55) is larger than that of the second column-shaped element (56). Therefore, the second column-shaped element (56) is in fact a narrow part between the anchor (55) and the first column-shaped element (57). According to one more embodiment (not shown), the second column-shaped element (56) is not disposed and the radial dimension of the base of the anchor (55) is greater than that of the first column-shaped element (57) .
    [057] A through hole (50) can be arranged in the central position of the connecting element (2). The fluke pieces (53) are arranged at the edge of the through hole (50). The paw-shaped pieces (53) extend towards the center of the through hole (50), while slanting towards the side (the underside of Figure 8) opposite the side on which the first is located. catching member (51). The paw-shaped pieces (53) may comprise a plurality of paw-shaped pieces separated by a plurality of spaces (54). Alternatively, only a fluke-shaped piece can be provided and occupy a part of the circumference of the through hole (50). Alternatively, the flute pieces (53) are arranged around the circumference of the through hole without spaces. Theoretically, when the paw-shaped pieces are arranged along the circumference of the through hole (50), provided that at least one paw-shaped piece is disposed on the side adjacent to the needle hub (12), the purpose of present invention can be achieved. The inner circumference (distal end) of the paw-shaped pieces (53) or the distal ends of the paw-shaped pieces (53) and the edge of the through hole (50) define a hole that allows the passage of the end (55) . The radial dimension of the hole corresponds to the radial dimension of the second column-shaped element (56) of the first clamping member (51) or the radial dimension of the first column-shaped element (57) when the second column-shaped element (56 ) is not provided. The maximum radial dimension of the hole is less than the maximum radial dimension of the base of the anchor (55). The paw-shaped pieces (53) are elastic and can elastically deform under the pressure of the anchor (55) of the first fastening member (51); after the anchor (55) passes, the fluke pieces (53) elastically return to their original state and secure the base of the anchor (55), thereby preventing the anchor (55) from retreating in the opposite direction. The paw-shaped pieces (53) arranged around the through hole (50) constitute the second clamping member (52) to hold the first clamping member (51) in a non-retractable manner in order to permanently retain the guard arm. (6) in the full guard position and prevent the used safety needle set from being used again.
    [058] Alternatively, the second clamping member may be a shank with an internal hole disposed above the connecting element (i.e. the upper side of Figure 8 or on the side where the first clamping member of the connecting element is located. ) and the paw-shaped pieces slant into the inner hole around the edge of the inner hole. The anchor of the first fastening member can be inserted into the inner hole and held by the fluke pieces.
    [059] According to one more modality, the first fastening member (51) and the second fastening member (52) can interchange their position, i.e. the first fastening member (51) is arranged in the connecting element (2) while the second clamping member (52) is disposed at the proximal end.
    [060] According to the present invention, the shape of the anchor can be any suitable shape without being limited to the tapered shape (for example, cone and pyramid shape) and the hook shape. The non-retractable fit of the anchor and the paw-shaped pieces is achieved as long as the front end can pass through the through hole (whose shape is not limited to that of a round through hole) defined by the edges (distal ends) of the pieces in the shape of shank, and the maximum radial dimension of the base of the anchor is greater than the maximum radial dimension of the through hole. In accordance with the present invention, the two column-shaped elements may have, but are not limited to, the shape of a cylinder or pyramid as long as the maximum radial dimension of the second column-shaped element is less than the maximum radial dimension of the anchor base.
    [061] To retain the protection arm (6) as stable as possible in the mounted position, in the temporary protection position and in the position of use, as shown in Figures 1 - 4, the needle protection device according to the present invention may further comprise a pair of positioning arms. In the embodiments shown, two pairs of positioning arms are symmetrically located on either side of the first and second clamping member.
    [062] Mounted position, Temporary guard position and Use position are intermediate positions different from the full guard position. When the protective arm (6) rotates towards these middle positions, the two clamping members do not engage each other in a non-retractable manner, ie the two clamping members are separable. This aspect could be implemented by the relative positions of the conveniently designed fastener members and the relative positions of the snap-in fasteners mentioned below and will not be discussed in detail in the present invention.
    [063] With respect to Figures 1 - 4 and Figures 6 - 9 and 12, according to the preferred embodiment of the present invention, each pair of positioning arms comprises a first positioning arm (71) and a second positioning arm ( 72). The first positioning arms (71) extend towards the proximal side from both ends of the proximal end (62), and their outer surfaces can deflate along with the outer edges of the flanges (65). The second positioning arms (72) are correspondingly disposed on opposite sides of the connecting element (2) and each comprises a second upper positioning arm (721) extending upwards and a second lower positioning arm ( 722) that extends downwards. As shown in Figure 8, the direction towards the upper side of the figure (the side on which the first connecting member (51) is located) is “upper” and the direction towards the lower side of the figure is “lower”.
    [064] Multiple pairs of detachable snap-on fasteners are disposed between the first positioning arm (71) and the second positioning arm (72). Each pair of snap-in fasteners corresponds to a desired retaining position of the guard arm (6) after engagement, said position including, but not limited to, any position shown in Figures 1 to 4. by applying an adequate force on the guard arm (6) in the direction of rotation, each pair of quick-fit fasteners can be pulled apart (ie they engage in a detachable way) so that the guard arm (6) can rotate towards different positions with respect to the connecting element (2). The different pairs of quick-fit fasteners can be different to generate different resistance to rotation of the protection arm (6). For example, in the mounted position shown in Figure 1, it is normally desired that accidental rotation of the guard arm (6) due to vibration during transport is prevented. Therefore, a pair of snap-on fasteners corresponding to the mounted position can be arranged to generate greater strength after snapping. In the temporary protection position shown in Figure 4, the safety needle set is normally moved from one room to another room adjacent to the hospital or clinic without much vibration, hence a pair of quick-fit fasteners, corresponding to the protection position temporary, can be arranged to generate less resistance after fitting.
    [065] In a specific embodiment shown in the figures, the second upper positioning arm (721) has an end that extends towards the first positioning arm (71), with a first protrusion (723) being disposed at the end. The second protrusion (724) is disposed on the lower edge of the second lower positioning arm (722). Three cavities (711, 712 and 713) are disposed on a surface of the first positioning arm (71). The first cavity (711), the second cavity (712) and a slot (714) to be mentioned below meet in the path or path of movement of the first protrusion (723) in the positioning arm (71) with respect to the arm. positioning (71); the third cavity (713) is in the path or path of movement of the second protrusion (724) in the positioning arm (71) with respect to the positioning arm (71).
    [066] The first cavity (711) is found at the upper proximal end of the positioning arm (71) and opens on an edge of the upper surface to facilitate the entry of the first protrusion (723) into the first cavity (711). However, the first cavity (711) does not necessarily have to open on the upper surface. The first cavity (711) and the first protrusion (723) constitute the first pair of quick-fit fasteners, and when they fit, the guard arm (6) is positioned in the first use position, as shown in Figure 2.
    [067] With respect to the first cavity (711), the second cavity (712) is arranged downstream of the movement path of the first protrusion (723) in relation to the positioning arm (71), that is, arranged in the lower distal position . The second cavity (712) and the first protrusion (723) constitute the second pair of quick-fit fasteners, and when they do, the guard arm (6) is positioned in the assembled position, as shown in Figure 1.
    [068] According to a preferred embodiment of the present invention, a groove (714) is arranged downstream of the second cavity (713) in the positioning arm (71). The beginning of the end of the slot (714) (the end adjacent to the second cavity (712)) may be the fourth cavity (not shown). The first protrusion (723) and the fourth cavity at the beginning of the end of the slot (714) constitute the fourth pair of quick-fit fasteners, and when they do, the guard arm (6) is positioned in the temporary protective position shown in Figure 4. As discussed above, the fourth cavity can be hollower than other cavities.
    [069] After using the safety needle assembly and when the guard arm (6) rotates towards the full guard position, as shown in Figure 5, the first protrusion (723) may slide into the groove (714), in order to reduce the force required to rotate the protection arm (6). The sliding fit of the first protrusion (723) and the groove (714) can also guide the movement of the guard arm (6) and facilitate accurate engagement of the first clamping member (51) and the second clamping member (52).
    [070] The third cavity (713) can be arranged at the lower proximal end of the positioning arm (71) and opens on an edge of the lower surface, as shown in the figure. However, the third cavity (713) does not necessarily have to open on the lower surface. The third cavity (713) and the second protrusion (723) constitute the third pair of quick-fit fasteners, and when they fit, the guard arm (6) is positioned in the second use position as shown in Figure 3.
    [071] Preferably, the quick fit between the pairs of respective quick fit fasteners is an elastic fit that can be implemented by a cantilever structure of the two positioning arms (71 and 72) and, alternatively or additionally, by means of use of elastic material to manufacture the positioning arms. Alternatively, only one of the two positioning arms (71 and 72) can be elastic. When the protrusion is not in the cavity, elastic deformation occurs between the two positioning arms (71 and 72) due to mutual pressure due to the existence of protrusions; when the protrusion moves towards the position of the cavity, the two positioning arms return to their original shapes due to elasticity and press the protrusion into the cavity, thereby positioning the protective arm (6) in the desired position. When force is applied to the guard arm (6) in the direction of movement of the guard arm (6), if the force is sufficient to overcome the resistance caused by the elastic deformation of the positioning arms, the protrusion will be separated from the cavity. Thus, the protection arm (6) starts to rotate towards the next position.
    [072] Alternatively, the first protrusion (723) may be replaced by a cavity and the first cavity and the second cavity (711 and 712) may be replaced by the protrusions, respectively; or the second protrusion (724) can be replaced by a cavity, and the third cavity (713) can be replaced by a protrusion, respectively.
    [073] The protrusion and cavity can have a semi-spherical shape or the shape of a crown or other shapes.
    [074] With respect to Figures 6 to 12, the first positioning arm (71) extending from the proximal end of the protection arm (6) is fixed to the connecting element (2) by means of the hinge (4) . In another embodiment, the hinge can be used as part of the first positioning arm.
    [075] The hinge (4) and the second positioning arm (72) can be located, respectively, on the inner and outer side of the first positioning arm (71). For example, in the embodiment shown in the figures, the second positioning arm (72) is on the inner side of the first positioning arm (71) and the hinge (4) is fixedly attached to the outer side of the first positioning arm (71).
    [076] Positioning arms can be realized like any other form of positive fit. Alternatively, the positioning arms can be held in any position relative to the guard arm (6) by, for example, frictional force resulting from the tight fit between them. Of course, the positioning arms can even be removed, as shown in Figure 20.
    [077] The needle protection device according to the present invention can be a symmetrical plane structure that is substantially symmetrical with respect to the plane (symmetrical plane) in which the longitudinal axis of the protection arm is located (for example, the hook-shaped members (66) and ribs (124) can be distributed asymmetrically with respect to the symmetrical plane), where the first fastener member and the second fastener member (51 and 52) meet in the symmetrical plane, and the walls of protection and the respective positioning arms are symmetrically distributed with respect to the symmetrical plane. According to the present invention, the term "internal" means the direction that points to the symmetrical plane or approaches the symmetrical plane, and "external" - the direction that points to the opposite side of the symmetrical plane or is distant from the symmetrical plane .
    [078] The protection arm structure of the present invention does not need to use the slip mold after injection molding, thereby simplifying the mold structure, substantially increasing the amount of mold cavities (e.g., up to 96 cavities), significantly facilitating the use of a large mold to mass produce the molded products by the injection molding process and remarkably reducing the production costs of the protective arm. Furthermore, there are low mold opening requirements for the guard arm structure according to the present invention, which facilitates the simplification of the mold structure and the reduction of manufacturing and mold use costs.
    [079] Figures 16 to 19 demonstrate the needle protection device according to another embodiment of the present invention. The needle protection device is similar to the needle protection device mentioned above. Therefore, the same reference numbers are used to indicate the same elements or members. The difference between said needle protection device and the above mentioned needle protection device consists in the fact that the first gripping member (51) with the tapered anchor (55) and the second gripping member (52) formed by the parts in Paw shape (53) can be replaced by a hook-shaped member. In that case, the through hole (50) can be omitted. In accordance with the present invention, those skilled in the art will understand that the hook-shaped fastening members can also be replaced by other members known in the art which can snap together in a non-retractable manner.
    [080] In the embodiment shown in Figures 16 to 19, a pair of fastener members comprises a first fastener member (81) and a second fastener member (82). A hook-shaped element (85) is disposed at a free end (86) of the first fastening member (81); the second clamping member (82) is a plate-shaped hook, that is, the cross-section of the plate is hook-shaped (as best seen in Figure 19). The hook-shaped element (85) of the first clamping member (81) and the second clamping member (82) are arranged in such a way that they can engage in a non-retractable manner when the protective arm (6) pivots towards to the full protection position shown in Figure 5.
    [081] In the preferred embodiment as shown in the figures, the first fastener member is also shaped like a plate and is disposed at the proximal end (62) of the protection arm (6) and has two opposite surfaces (84) in the width direction and two opposing thick surfaces (83). The hook-shaped element (85) is disposed on each of the two thick surfaces (83) at the free end (86) of the first fastening member (81).
    [082] Referring to Figure 16, two pairs of positioning arms are symmetrically located on either side of the first fastener member (81). The positioning arm (72) of each pair of positioning arms disposed on the connecting element (2) is arranged together with the second clamping member (82). When the guard arm (6) rotates towards the full guard position, the two hook-shaped elements (85) of the first fastening member (81) and the two second fastening members (82) respectively engage in a non- retractable.
    [083] As shown in Figures 16 to 18, the free end (86) of the first fastener member (82) has a substantially tapered shape, that is, its longitudinal dimension gradually increases from the tip of the free end (86) to the hook-shaped elements (85). The transition from the free end to the hook-shaped elements can be straight, arcuate or other curved transition, preferably a smooth transition.
    [084] Referring to Figure 19, the second hook-shaped fastener member (82) has a cross-section of an arm that extends in a downwardly curved manner. The structure itself allows the second gripper member (82) to have the ability to elastically deform. When the free end (86) with the substantially tapered surface shown in Figures 16 to 19 contacts the second fastener members (82), the free end can easily allow the second fastener members (82) to elastically deform. and pass over the second fastener members (82). When the free end (86) passes over the second fastener members (82), the second fastener members (82) elastically return to their original shape. At this time, if the first fastener member (81) is about to retreat, the second fastener members (82) will engage with the hook-shaped elements (85) of the first fastener member (81), thereby preventing the first member from recoiling. fastener (81). That is, the hook-shaped elements of the first fastener member (81) engage the second fastener members (82) in a non-retractable manner.
    [085] In yet another embodiment (not shown), an additional hook-shaped element is disposed on the surface (84) of the free end (86) of the first fastener member (81) and is equal to the hook-shaped elements ( 85) mentioned above. Correspondingly, the second clamping member equal to the second clamping members (82) mentioned above can be arranged on the connecting element. When the guard arm (6) rotates towards the full guard position, the three hook-shaped elements (85) of the first fastener member (81) respectively engage the three second fastener members (82) in a non- retractable.
    [086] In yet another preferred embodiment (not shown), the second clamping member is not provided on the positioning arms. The second clamping members (82) mentioned above can be arranged only on the connecting element (2). In that case, the first fastening member (81) can be arranged only together with a hook-shaped element (85) corresponding to the second fastening member (82) so that when the protective arm (6) rotates towards the position For complete protection, the hook-shaped element (85) of the first fastening member (81) engages the second fastening member (82) in a non-retractable manner.
    [087] Although the present invention has been described with reference to the accompanying drawings above, those skilled in the art will understand that the above descriptions are used for illustrative and exemplary purposes only, but are not limited to the scope of protection of the present invention which is defined only by the appended claims. Considering the present invention, those skilled in the art may make various modifications, alterations or substitutions in specific circumstances as long as they are within the scope of protection of the present invention.
    权利要求:
    Claims (20)
    [0001]
    1).NEEDLE PROTECTION DEVICE, said device comprising: - a connecting portion (2) being engaged with a needle hub of a needle; - a protective arm (6) receiving a needle needle tube therein and having a proximal end portion (62) adjacent to the connecting portion (2); - a hinge member (4) connected between the connecting portion (2) and the protective arm (6) so that the protective arm (6) is rotatable with respect to the connecting portion (2); - a pair of retaining members (51, 52) formed in the proximal end portion (62) of the guard arm (6) and the connecting portion (2) respectively, wherein the pair of retaining members (51, 52 ) is interlocked with each other in a non-recoverable manner when the guard arm (6) rotates to a full guard position in which the guard arm (6) is closest to the needle tube with respect to the connecting portion ( 2), characterized in that the pair of retaining members (51, 52) comprises: - a first retaining member (51) comprising a first column-like portion (57) and an anchor (55) formed in the first column-like portion ( 57); and - a second retaining element (52) comprising one or more legs (53) formed on an edge of a through hole (50) and extending towards a center of the through hole (50), distal ends of the legs. or the distal ends of the legs and the edge of the through hole (50), defining a hole that has a maximum radial dimension of the hole less than a maximum radial dimension of an anchor base (55), wherein the distal ends of the legs (53) allow a front end of the anchor (55) to pass through the through hole (50) and grip the base of the anchor (55) in a non-removable manner when the guard arm (6) rotates to the position of full protection.
    [0002]
    2). NEEDLE PROTECTION DEVICE, according to claim 1, characterized in that the device further comprises a pair of positioning arms (71, 72) formed on the proximal end portion (62) of the protection arm ( 6) and the connecting portion (2) respectively, and being formed with at least one pair of complementary snap-in features (711, 723; 712, 723; 713, 724), the at least one pair of snap-in features by pressure (711, 723; 712, 723; 713, 724) being interlocked with each other in a separable manner when the guard arm (6) rotates to at least an intermediate position different from the full guard position with respect to the connecting portion (2), wherein the middle position is remote from the needle tube of the needle with respect to the full guard position, so that in the middle position, the pair of retaining members (51, 52) is located in the no position. engaged.
    [0003]
    3). NEEDLE PROTECTION DEVICE, according to claim 1, characterized in that the first retaining member is formed in the proximal end portion of the protection arm (6), and the second retaining member is formed in the connecting portion (2), the through hole (50) is formed in the connecting portion (2), the legs (53) are formed on the edge of the through hole (50), extending towards a center of the through hole (50) and are slanted towards an opposite side to the side on which the first retaining member is, so that when the guard arm (6) pivots to the full guard position, the front end of the The anchor (55) can pass through the through hole (50) and beyond the legs (53), and the base thereof is secured by the legs (53) irretrievably.
    [0004]
    4).NEEDLE PROTECTION DEVICE, according to claim 1, characterized in that the first retaining member is formed in the connecting portion and the second retaining member is formed in the proximal end portion of the protection arm, the through hole is formed in the proximal end portion of the guard arm, the legs are formed at the edge of the through hole, extend towards a center of the through hole and are angled towards an opposite side to the side. wherein the first retaining member is located, so that when the guard arm pivots to the full guard position, the front end of the anchor can pass through the through hole and beyond the legs, and the base of the anchor is gripped. by the paws in a way that cannot be treated.
    [0005]
    5).“NEEDLE PROTECTION DEVICE5. Needle protection device according to any one of claims 1 to 4, characterized in that the first retaining element (51) further comprises a second column-like portion (56) between the anchor (55) and the first column-like portion (57) which has a radial dimension of the second column-like portion (56) smaller than that of the first column-like portion (57), wherein the anchor (55) is a conical anchor (55) and one dimension radial of the base of the conical anchor (55) is greater than that of the second column-type portion (56).
    [0006]
    6). NEEDLE PROTECTION DEVICE, according to claim 2, characterized in that the pair of positioning arms (71, 71) comprises a first positioning arm (71) and a second positioning arm (72) , wherein a first protrusion (723) is formed on an end portion of the second positioning arm (72) extending towards the first positioning arm (71), at least a first concave (711) is formed in a path. in the first positioning arm (71) formed by movement relative to the first projection (723), and the first projection (723) is engaged with the first concave (711) in a separable manner to position the guard arm (6) in a first intermediate position, the first protrusion (723) and the first concave (711) constituting a first pair of engaging features.
    [0007]
    7).NEEDLE PROTECTION DEVICE, according to claim 6, characterized in that a second concave (712) is formed in the path in the first positioning arm (71) formed by the movement in relation to the first protrusion (723) , and the first boss (723) is engaged with the second concave (712) in a separable manner to position the guard arm (6) in a second intermediate position, the first boss (723) and the second concave (712) constituting a second pair of docking features.
    [0008]
    8). NEEDLE PROTECTION DEVICE, according to claim 7, characterized in that the second positioning arm (72) comprises a second upper positioning arm (721) and a second lower positioning arm (722), wherein the first protrusion (723) is formed on an end portion of the second upper positioning arm (721) extending towards the first positioning arm (71), the first protrusion (723) is engaged with the first concave ( 711) and the second concave (712), in turn, when the guard arm (6) rotates towards the full guard position with respect to the connecting portion (2), a second protrusion (724) is formed in a lower edge of the second lower positioning arm (722), at least a third concave (713) is formed in a path in the first positioning arm (71) formed by movement relative to the second boss (724), and the second boss ( 724) is engaged with the third concave ( 713) in a detachable manner to position the protective arm (6) in a third intermediate position, the second protrusion (724) and the third concave (713) constituting a third pair of engaging features.
    [0009]
    9). NEEDLE PROTECTION DEVICE, according to claim 2, characterized in that the needle protection device comprises two pairs of positioning arms that are symmetrically located on both sides of the pair of retaining elements.
    [0010]
    10). NEEDLE PROTECTION DEVICE, according to claim 1, characterized in that a flange (65) is formed on each of the outer sides of the protection arm (6).
    [0011]
    11). NEEDLE PROTECTION DEVICE, said device comprising: - a connecting portion (2) being engaged with a needle hub of a needle; - a protective arm (6) receiving a needle needle tube therein and having a proximal end portion (62) adjacent to the connecting portion (2); - a hinge member (4) connected between the connecting portion (2) and the protective arm (6) so that the protective arm (6) is rotatable with respect to the connecting portion (2); - a pair of retaining members (51, 52) formed in the proximal end portion (62) of the guard arm (6) and the connecting portion (2) respectively, wherein the pair of retaining members (51, 52 ) are interlocked with each other in a non-recoverable manner when the guard arm (6) rotates to a full guard position in which the guard arm (6) is closest to the needle tube with respect to the connecting portion (2 ), the pair of detent members comprises: a first retaining member (81) formed with a hook-like portion (85) at a free end (86) thereof, a second retaining member (82) in the form of a plate-shaped hook, wherein the hook-shaped portion (85) of the first retaining member (81) and the second retaining members (82) are non-removably engaged with each other when the guard arm (6) rotates to full protection position, characterized in that the first retaining element (81) is plate-shaped and formed in the proximal end portion (62) of the guard arm (6), the hook-shaped portion (85) is formed on each of the two opposing thickness surfaces (83) of the free end (86) thereof, the needle protection device comprises two pairs of positioning arms symmetrically located on either side of the first retaining member (81), the positioning arm of each pair of positioning arms (72) formed in the connecting portion (2) being formed with a second retaining member (82) wherein the two hook-like portions (85) of the first retaining member and the two second retaining members (82) are engaged with each other, respectively, in a non-removable manner when the guard arm (6) rotates to the full guard position.
    [0012]
    12). "NEEDLE PROTECTION DEVICE", according to claim 11, characterized in that the first retaining member (81) is formed in the proximal end portion (62) of the protection arm (6), and the second retaining member (82) is formed in the connecting part (2).
    [0013]
    13). "NEEDLE PROTECTION DEVICE", according to claim 11, characterized in that the free end (86) of the first retaining element (81) has a substantially conical shape.
    [0014]
    14). "NEEDLE PROTECTION DEVICE", according to claims 11 or 13, characterized in that an additional hook-shaped portion is formed on a transverse surface (84) of the free end (86) of the first element of retaining member, and a second further retaining member is formed in the connecting portion (2), so that the three hook-like portions of the first retaining member and the three second retaining members are respectively engaged with each other in a manner non-retractable when guard arm rotates to full guard position.
    [0015]
    15). "NEEDLE PROTECTION DEVICE", according to claim 11, characterized in that the device further comprises a pair of positioning arms (71, 72) formed on the proximal end portion (62) of the shield (6) and the connecting portion (2) respectively, and being formed with at least one pair of complementary snap-on features (711, 723; 712, 723; 713, 724), the at least one pair of features snap fit (711, 723; 712, 723; 713, 724) being releasably engaged with each other when the guard arm (6) rotates to at least an intermediate position other than the full guard position with respect to the portion connection (2), wherein the middle position is remote from the needle tube of the needle with respect to the full guard position, so that in the middle position, the pair of retaining members (51, 52) is located in the not engaged position.
    [0016]
    16). NEEDLE PROTECTION DEVICE according to claim 15, characterized in that the pair of positioning arms (71, 71) comprises a first positioning arm (71) and a second positioning arm (72) , wherein a first protrusion (723) is formed on an end portion of the second positioning arm (72) extending towards the first positioning arm (71), at least a first concave (711) is formed in a path. in the first positioning arm (71) formed by movement relative to the first projection (723), and the first projection (723) is engaged with the first concave (711) in a separable manner to position the guard arm (6) in a first intermediate position, the first protrusion (723) and the first concave (711) constituting a first pair of engaging features.
    [0017]
    17). NEEDLE PROTECTION DEVICE, according to claim 16, characterized in that a second concave (712) is formed in the path in the first positioning arm (71) formed by the movement in relation to the first protrusion (723) , and the first boss (723) is engaged with the second concave (712) in a separable manner to position the guard arm (6) in a second intermediate position, the first boss (723) and the second concave (712) constituting a second pair of docking features.
    [0018]
    18). NEEDLE PROTECTION DEVICE according to claim 17, characterized in that the second positioning arm (72) comprises a second upper positioning arm (721) and a second lower positioning arm (722), wherein the first protrusion (723) is formed on an end portion of the second upper positioning arm (721) extending towards the first positioning arm (71), the first protrusion (723) is engaged with the first concave ( 711) and the second concave (712), in turn, when the guard arm (6) rotates towards the full guard position with respect to the connecting portion (2), a second protrusion (724) is formed in a lower edge of the second lower positioning arm (722), at least a third concave (713) is formed in a path in the first positioning arm (71) formed by movement relative to the second boss (724), and the second boss ( 724) is engaged with the third concave (713) in a detachable manner to position the guard arm (6) in a third intermediate position, the second protrusion (724) and the third concave (713) constituting a third pair of engaging features.
    [0019]
    19). NEEDLE PROTECTION DEVICE according to claim 15, characterized in that the needle protection device comprises two pairs of positioning arms that are located symmetrically on both sides of the pair of retaining elements.
    [0020]
    20). NEEDLE PROTECTION DEVICE, according to claim 11, characterized in that a flange (65) is formed on each of the outer sides of the protection arm (6).
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    同族专利:
    公开号 | 公开日
    KR102070308B1|2020-01-28|
    ZA201401666B|2015-11-25|
    MX347352B|2017-04-24|
    RS55567B1|2017-05-31|
    EP2750743A4|2014-11-19|
    BR112014004893A2|2018-11-06|
    CL2014000507A1|2015-02-27|
    EP2750743A1|2014-07-09|
    US20140221872A1|2014-08-07|
    CA2847183A1|2013-03-07|
    PL2750743T3|2017-03-31|
    AU2012303935B2|2017-01-19|
    US10537687B2|2020-01-21|
    RU2649463C2|2018-04-03|
    WO2013029529A1|2013-03-07|
    JP6266517B2|2018-01-24|
    RU2014112243A|2015-10-20|
    ES2609806T3|2017-04-24|
    HUE031583T2|2017-07-28|
    MY170808A|2019-08-30|
    CN102363056B|2013-06-05|
    PT2750743T|2017-01-13|
    HRP20170010T1|2017-03-10|
    CN102363056A|2012-02-29|
    MA35454B1|2014-09-01|
    AU2012303935A1|2014-03-20|
    CA2847183C|2020-10-20|
    JP2014527443A|2014-10-16|
    MX2014002419A|2014-09-25|
    KR20140077161A|2014-06-23|
    DK2750743T3|2017-01-23|
    EP2750743B1|2016-11-02|
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    法律状态:
    2018-12-04| B25A| Requested transfer of rights approved|Owner name: SOL-MILLENNIUM MEDICAL HK LIMITED (CN) |
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-12-26| B25G| Requested change of headquarter approved|Owner name: SOL-MILLENNIUM MEDICAL HK LIMITED (CN) |
    2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-11-17| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-03-16| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-11| 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 28/08/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201110270127.1|2011-09-01|
    CN2011102701271A|CN102363056B|2011-08-01|2011-09-01|Needle head protection device and safety needle component|
    PCT/CN2012/080666|WO2013029529A1|2011-09-01|2012-08-28|Needle protection device and safety needle assembly|
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