• 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:
    safety needle set. the present invention relates to a safety needle assembly having a high level of safety and operability. the present invention is a safety needle assembly (100) having a hub (1), a cannula (2), a collar (3), a protector (4), and a sheath (5). the sheath (5) is provided with an opening to accommodate the cannula (2); a cannula attachment part for securing the cannula (2) accommodated in the opening; a mounting part to rotatively support the sheath (5), the mounting part being mounted on the hub (1) or collar (3); and a stop designed for a user's finger to press the sheath (5) in order to a-accommodate the cannula (2) in the opening of the sheath (5), the projected stop being provided in the central vicinity in the length direction in the o-posed side to the opening surface of the opening, or in a position of the most distal end side of the sheath (5).
    公开号:BR112013020087B1
    申请号:R112013020087-1
    申请日:2012-02-10
    公开日:2020-12-15
    发明作者:Laurence Gonzales；Satoshi Kagaya
    申请人:Terumo Kabushiki Kaisha；
    IPC主号:
    专利说明:

    Field of the Invention
    [0001] The present invention relates to a needle set having a safety mechanism (that is, consisting of a needle and fixing parts). Description of the Related Art
    [0002] Conventionally, different types of needles such as needles for a hypodermic syringe and catheter have been applied to a medical tool. Here, a user (such as a healthcare professional) needs to handle these needles safely. Otherwise, if a user mistakenly inserts such a needle used for a patient or similar into his own body (finger or similar), the user may be infected with a disease.
    [0003] Here, there may be a method of preventing such an accident, for example, including a needle cover device used with a cylindrical cap. However, even in this method, a user may accidentally pierce himself with the needle on the finger holding the cap. Therefore, this method cannot be perfectly safe to prevent a drilling accident.
    [0004] With respect to other methods, for example, documents JP 2000-140109 A and JP 2005-525198 A describe a technique to prevent an accident by using a needle set consisting of a sheath (or protection) to cover a needle. According to this technique, a user can use the needle set in the steps of: using a needle for medical treatment; articulate a sheath by the fingers to cover the used needle with the sheath, and fix the state in which the used needle is covered by the sheath.
    [0005] However, it should be noted that the technique described in document JP 2000-140109 A needs a lot of strength to use the needle set, since there is only a small distance between a fulcrum of the joint sheath and a position in the hem that a user pushes with his finger. This results in poor needle set operability.
    [0006] Additionally, according to a technique described in JP 2005-525198 A, no stop that a user pushes with his finger to articulate the sheath is provided with the needle set. This also results in a low operating capacity of the needle set.
    [0007] US 2007 265 566 A1 discloses a fixed needle syringe that has a syringe barrel with its distal portion modified to accept a needle guard housing. In particular, the distal part is formed with a groove dimensioned to accept a collar that is fixed to the housing. The inner surface of the collar is provided with a few flanges that fit the groove formed in the distal part of the syringe barrel of the fixed needle syringe. Projections are provided inside the collar to act fractionally against the syringe barrel, so that the needle guard housing does not rotate freely, but is rotatable relative to the syringe barrel by applying a predetermined torque to the collar or the accommodation attached to it. An internal hook is provided in the housing to grip the syringe needle, when the housing is hinged to cover the needle extending from the syringe needle connector. Tightening locking members are provided at the base of the housing and outside the collar to securely retain the housing in relation to the collar, as soon as the housing is pivoted along the syringe alignment position. The receiving part of the syringe barrel collar can also be modified with a circumferential shoulder, with the inner surface of the collar grooved correspondingly so that the collar can be fitted with the syringe body in an alternative mode.
    [0008] US 2008 306 451 A1 discloses a hinged cap device for use with a syringe that includes a base defining an inner cavity for mounting on a tip and a cap connected to the base by a working hinge. The lid is movable from a position ready to an open position to expose a needle, and from an open position to a safe position to prevent relative rotation between the lid and the base. A first locking mechanism is on the cap to engage the needle, the first locking mechanism located on one side of the needle in the ready position and located on a second side of the needle in the secure position. The needle is detachable from a first locking mechanism in the ready position, and the needle is not detachable from the first locking mechanism in the secure position.
    [0009] EP 0 815 888 A2 shows a needle guard assembly that has a single use cannula lock of the present invention that includes a needle cannula that has a proximal end, a distal end and a lumen through the same. A connector includes a proximal end for connection to a fluid transfer device and a distal end connected to the proximal end of the needle cannula. A collar is rotatably connected to the connector so that the collar can be rotated around the connector. An elongated needle cover removably engages the connector and covers the needle cannula. An elongated needle shield that has a proximal end and a distal end is hingedly connected, through its proximal end, to the collar. needle protection includes two side walls that define a longitudinal opening and a rear wall between said side walls that define a recess having an interior surface. The needle guard is capable of pivoting from an open position, where the needle cannula is exposed, to a closed needle guard position where at least part of the needle cannula is within the longitudinal opening of the needle guard . The needle guard assembly further includes a frame to prevent the needle guard from pivoting into the closed position, unless the needle cover is removed, and the frame to lock the needle guard in the closed needle guard position. when the needle guard is hinged in the closed position. The locking frame holds the needle cannula in the longitudinal opening of the needle guard.
    [00010] According to WO 2010 059 502 A2, an articulated protection set is configured to protect a needle to prevent needle injuries. The set comprises a base that includes a hinge, a first guard and a second guard. The first guard extends from the base and at least partially surrounds the second guard. The first and second guards are configured to articulate around the hinge. In some embodiments, a distal end of the first guard is opened. In other embodiments, the first and second guards include side walls with channels extending along them. The first and second guards are rotatable with respect to each other so that the channels in each of them can be aligned. In other embodiments, the first and second guards are translatable and rotatable with respect to each other.
    [00011] Accordingly, from the point of view of the aforementioned disadvantages, the present invention aims to provide a safe needle assembly having a high safety and operability.
    [00012] The purpose of the invention is achieved by a safe needle assembly according to claim 1. Advantageous modalities are carried out according to the dependent claims. Means to Solve Problems
    [00013] The present invention is directed to a safety needle assembly including a sheath having the following characteristics. That is, the sheath comprises: a cube including a proximal end connecting to a syringe, and a distal end; a cannula having a proximal end connecting to the distal end of the cube, a lumen extending in a longitudinal direction of the cannula, and a distal end; a collar attached to the hub and having a sheath attachment part; a protector covering the distal end of the cannula being fixed to the hub or collar, and being detachable to expose the distal end of the cannula; an opening partially extending along at least one longitudinal direction of the sheath to accommodate the cannula.
    [00014] The sheath additionally comprises: a cannula locking part for securing the cannula housed in the opening; a fixing part rotatingly supporting the sheath in a direction of the cannula housing when the protector is detached to expose the distal end of the cannula, the fixing part being fixed to the fixing part of the collar sheath; and a projected stop disposed in the vicinity of a central part of the sheath in a longitudinal direction in which the central part is located on the opposite side of an opening from the opening, or arranged in a position closer to the distal end of the sheath than the part central. Here, the user's finger pushes the stop into the sheath to accommodate the cannula in the opening.
    [00015] The mechanism mentioned above allows the safe needle assembly to have a high safety performance. In addition, the sheath provided with the projected stop disposed in the vicinity of a central part of the sheath in a longitudinal direction, or arranged in a position closer to the distal end of the sheath than the central part also allows the security has a highly operational performance.
    [00016] More specifically, the stop located in the position as described above allows the user to push the stop in the sheath with a finger to a position far from the fulcrum, allowing a large impulse to be generated. This large thrust allows the sheath to be articulated by a relatively small force.
    [00017] Additionally, the present invention is also directed to a safety needle assembly including a sheath having the following characteristics. That is, the sheath comprises: a cube including a proximal end connecting a syringe and a distal end; a cannula having a proximal end connecting with the distal end of the cube, a lumen extending in a longitudinal direction, and a distal end; a collar fixed to the hub and having a sheath fixing part and a pair of sheath fixation protrusions; a protector covering the distal end of the cannula being fixed to the hub or collar, and being detachable to expose the distal end of the cannula; and an opening partially extending along at least one longitudinal direction of the sheath to accommodate the cannula.
    [00018] The sheath additionally comprises: a cannula fixation part consisting of grooves fitting respectively with the pair of sheath fixation protrusions when the cannula is housed in the opening, and a pair of flap-like walls, each of which has a inclination disposed within the wall in a direction from the groove to the proximal end of the sheath; and a fixation part rotatingly supporting the sheath in a direction of cannula housing when the protector is detached to expose the distal end of the cannula, the fixation part being fixed to the hemming part of the collar.
    [00019] The mechanism mentioned above allows the safety needle assembly to perform with high safety. In addition, the sheath provided with the pair of flap-type walls including the grooves and slopes allows the safety needle assembly to have a high operating capacity. More specifically, the flap-like wall projecting from the sheath body has the flexibility to be easily folded out. In addition, the slopes allow the sheath fixation protrusions located on the collar to be more easily introduced into the grooves. In addition, the grooves make it easier for the collar hem protrusions to be attached to the hem.
    [00020] Accordingly, this construction allows the sheath fixation protrusions located on the collar to be fitted and attached to the gloves on the flap-like walls of the sheath, by a relatively small force when a user pushes the sheath with a finger.
    [00021] Additionally, in the present invention, the sheath preferably comprises a circular recess, and a slope having a plurality of protrusions and recesses with great resistance to the friction disposed between the circular recess and the stop. Here, the circular recess and the slope are used as a finger orientation region with which the finger of a user operating the sheath comes into contact, and arranged in a position closer to a proximal end side than the willing stop on the opposite side of the opening.
    [00022] The construction mentioned above allows the user to push the sheath in any of the positions in the circular recess into which the user's finger fits easily, or the inclination having a plurality of protrusions and recesses with great resistance to friction. Accordingly, this allows the safety needle assembly to have a high operating capacity.
    [00023] Additionally, in the present invention, the sheath preferably comprises a locking tongue inside the opening as a cannula fixing part, the locking tongue projecting from the side wall of the opening into it. Here, the locking tab passes the cannula inserted into the opening and then fixes the cannula.
    [00024] This construction allows the cannula housed within the opening of the sheath to be fixed by a locking tongue that is easily molded. Here, the cannula fixing part can be produced at low cost.
    [00025] In addition, in the present invention, a sheath fixing part consists of cylindrical pins. Here, the sheath securing part of the collar is preferably made up of projected ears, including a pair of hollow corridors with respective housing for the cylindrical pins, and internal chamfers for receiving the respective cylindrical pins.
    [00026] According to the construction mentioned above, the collar ears have chamfers inside the ears, respectively. Thus, when the hem is to be attached to the collar, a relatively small force is required to fix the hem to the collar through the chamfers.
    [00027] Additionally, in the present invention, preferably the pair of sheath clamping protrusions located on the collar respectively has a substantially triangular shape and is disposed in the opposite position of the sheath clamping part. In addition, the pair of sheath fixation protrusions preferably has grooves fitting respectively with a pair of flap-like walls of the cannula fixing part.
    [00028] The aforementioned construction allows the pair of collar fixation sheaths to be made respectively in a simple structure with a substantially triangular shape having a groove. Effect of the Invention
    [00029] In accordance with the present invention, a safety needle assembly having high safety and operability is provided. Brief Description of Drawings
    [00030] FIG. 1 is an exploded perspective view illustrating the components of a safety needle assembly in a present embodiment; FIG. 2 is a perspective view of a hub that is a component of a safety needle assembly; FIG. 3A is a perspective view of a collar that is a component of the safety needle assembly; FIG. 3B is a perspective view of the collar, as seen from the rear side of the collar in FIG. 3A; FIG. 4 is a perspective view of a protector that is a component of the safety needle assembly; FIG. 5A is a perspective view of a sheath that is a component of the safety needle assembly; FIG. 5B is a perspective view of the sheath as seen from the underside of the sheath of FIG. 5A; FIG. 6 is a perspective view of the safety needle assembly representing a state in which all components are assembled; FIG. 7 is a perspective view of the safety needle assembly representing a ready to use state. This state is prepared by removing a guard from the safety needle assembly in FIG. 6, and exposing a cannula through the sheath joint; FIG. 8 is a perspective view of the safety needle assembly representing a state just before the cannula is housed in the sheath. The state is prepared for pivoting the sheath in the state of the safety needle assembly illustrated in FIG. 7, after the safety needle assembly has been used; FIG. 9A is a perspective view of the safety needle assembly representing a state in which the cannula is housed in the sheath. This state is prepared by a user to push a sheath with a finger, the sheath being in the safety needle assembly state illustrated in FIG. 8; FIG. 9B is a perspective view of the safety needle assembly as seen from the underside of the safety needle assembly of FIG. 9A. Modalities for Carrying Out the Invention
    [00031] Hereinafter, the modalities for carrying out the present invention will be explained in detail with reference to the attached drawings (or with appropriate reference to the following descriptions in addition to the drawings).
    [00032] Here, a safety needle set in the present mode is used connected with a liquid transfer device such as a syringe (hereinafter, simply called "syringe"). Here, the safety needle assembly is packaged by bubble wrap or the like which is formed by extending a plastic sheet material. In that case, after treating such packaged product, a user connects the safety needle assembly to a syringe. Alternatively, in the state of connection with a syringe, the safety needle assembly can be packaged as a product.
    [00033] First, with reference to FIG. 1, the entire construction of the safety needle set in the present embodiment will be explained. Note that each component of the set is explained, a "direction" described here is defined by the respective directions in FIG. 1, illustrating "up" and "to bay", "forward" (or distal end side) and "back" (or proximal end side), and "left" and "right". In other figures, directions are described similarly to those in FIG. 1. In addition, it should be noted that the "proximal end" and "distal end" may include a peripheral part of the "end" part rather than just the "end" part.
    [00034] The safety needle set 100 includes a hub 1, a cannula 2, a collar 3, a protector 4, and a sheath 5. Note that a set without a protector 4 is also called a "safety needle set. security 100 "as described later.
    [00035] Cannula 2 is connected to hub 1 in a general method, for example, using an epoxy resin. Cannula 2 includes a proximal end 21 connected to a proximal end of cube 1 and a distal end 22 having a blade surface 20. Note that it is preferable to mold cube 1, collar 3, protector 4 and sheath 54 as one piece parts. However, the present modality is not limited to the method mentioned above, and a variety of methods can be applied.
    [00036] Collar 3 must be fitted with hub 1 in a predetermined position. Additionally, the protector 4 is oriented by the hub 1 to be fitted inside the collar 3 and / or the hub 1, in order to cover the cannula 2 in the socket. In addition, sheath 5 must be fitted with collar 3 so that sheath 5 can articulate in collar 3. Detailed explanations will be described later.
    [00037] As illustrated in FIG. 2, the cube 1 includes a distal end 10 and a proximal end 11 connected to a syringe (not shown in FIG. 2). Here, a hollow hole 12 extends along the entire length of the hub 1 in a longitudinal direction (or front-back direction). The hollow hole 12 has openings at both the distal end 10 and the proximal end 11.
    [00038] A distal end 21 of the cannula 2 in FIG. 1 is fitted and fixed with the inside of the drilled hole 12 at the distal end 10 of the cube 1 using an epoxy resin. Accordingly, a lumen extending along the entire length of the cannula 2 is communicated with the drilled hole 12 inside the cube 1.
    [00039] The distal end 10 of the cube 1 comprises a plurality of ribs 13 in a shape resembling a series of steps, extending in a longitudinal direction. The ribs 13 facilitate the fitting of the collar 3 with the hub 1 coaxially (or having a central geometric axis "c" being coaxial).
    [00040] A surface of the cube 1 includes a plurality of protuberances 14 projecting from a circumferential outer surface of the cube 1 to an external side thereof in a radial direction.
    [00041] Additionally, a ring region with recess 15 is located on a distal side of the protuberances 14. Accordingly, the stage 16 and 17 parts neighboring the ring region with recess 15 have larger outside diameters than the ring region with recess 15.
    [00042] The proximal end 11 of cube 1 has a flange 18 projecting to an eternal side of cube 1 in a radial direction. Flange 18 is engaged, for example, with a distal end of a syringe body (not shown). The coupling allows hub 1 to be connected with the syringe body (not shown). This connection step can be carried out by a known method, for example, by engaging the flange 18 with a screw (or female screw) located at a distal end of the syringe body (not shown).
    [00043] As illustrated in Figures 3A and 3B, collar 3 has a contour in a circular shape, having a proximal end 38 and a distal end 34. Collar 3 additionally includes a hollow hole 39 for attachment to hub 1. Here , an internal surface of the collar 3 has a plurality of protrusions 301 projecting towards the internal side. These protrusions 301 protrude inwardly and are engaged with protrusions 14 on hub 1. This engagement allows collar 3 to be fixed non-rotatively to hub 1.
    [00044] Additionally, collar 3 includes a ring-shaped protrusion 302 on an internal surface of the same. The ring-shaped protrusion 302 is spread across the entire circumference on the inner peripheral side of the hollow hole 39. Here, when collar 3 is attached to hub 1, the ring-shaped protrusion 302 is seated in the recessed ring region 15 of the cube 1. Therefore, the ring-shaped protrusion 302 has a smaller internal diameter than the external diameters of the two stages 16 and 17 directly neighboring the recessed ring region 15 of the cube 1. In contrast, the shaped protrusion of ring 302 has an internal diameter substantially equal to the outside diameter of the ring region with recess 15 of hub 1. Note that the ring-shaped protrusion 302 projected to the inner side of the radial diameter is illustrated as a protrusion-shaped protrusion. consecutive ring. However, the ring-shaped protrusion 302 can be formed, as consisting of a plurality of separate segments, each of which extends along a part of the inner circumference of the collar 3.
    [00045] The collar 3 has a pair of ears 31 (or sheath fixing part) designed for the external side in the radial direction. The upper half of the ear 31 has a shape formed by the split in the middle of a substantially cylindrical shape which is on the side. The ear 31 includes an ear hole 33 with a cylindrical shape to which a pin 540 of the sheath 5 (as described below) is housed, and a chamfer 32. The chamfer 32 is arranged in an upper part on the inner side of the ear 31, as illustrated in figures 3A and 3B. The pin 540 of the sheath 5 passes along the chamfer 32, in order to be housed in the ear hole 33.
    [00046] That is, a pair of ears 31 allows the sheath 5 to be fixed in a rotating manner to the collar 3. More specifically, the chamfers 32 facilitate the respective fixation of a pair of pins 540 of the sheath 5 in the pair of ears 31 of the collar 3. Additionally, when the pair of pins 540 is attached to the pair of ears 31, the pair of ears 31 bends slightly in the external direction so that the ears 31 are separated from each other. In addition, an ear thickness 31 can be roughly determined by considering the intensity of resistance to damage, and the flexibility to facilitate fixation of the sheath 5.
    [00047] Collar 3 includes a ring-shaped projection 36 designed for the external side in the radial direction. The ring-shaped protrusion 36 is a component for fitting the protector 4.
    [00048] Collar 3 additionally includes a pair of sheath fixation protrusions 36. Sheath fixation protrusion 35 has a substantially triangular shape, and is arranged on the opposite side of the ear 31.The sheath fixation protrusion 35 additionally includes a groove 37 that must be engaged with a flap-like wall 53 (or cannula fixing part) of the sheath 5.
    [00049] As illustrated in FIG. 4, protector 4 is formed as a hollow element with an elongated cylindrical shape, including a distal end 40 and a proximal end 41. Preferably, protector 4 is opened at the proximal end 41 and closed at the distal end 41. A plurality with ribs 42 is arranged in a longitudinal direction in an intermediate part of the outer surface of the protector 4, so that a user can easily hold the protector 4.
    [00050] Protector 4 is arranged in position to cover cannula 2. This arrangement allows protector 4 to cover the distal end of cannula 2. At that time, protector 4 is attached to collar 3 and / or hub 1. Additionally , the protector 4 can be detachably articulated in order to expose the distal end 22 of the cannula 2. Note that a seating face (not shown) for the collar 3 can be arranged inside the protector 4 at the proximal end 41 of the same.
    [00051] As illustrated in Figures 5A and 5B, the sheath 5 includes a proximal end 501 and a distal end 521, and is formed as an elongate member in the hollow body. The sheath 5 includes an opening 58 extending along at least a part of the longitudinal extension of the sheath 5. The opening 58 is an internal space of the sheath 5. In the present embodiment, the opening 58 of the sheath 5 extends throughout the length in the longitudinal direction. The proximal end 501 is opened in the longitudinal direction of the sheath 5, while the distal end 521 is closed in the longitudinal direction of the sheath 5.
    [00052] Additionally, the sheath 5 includes finger guiding parts 50, 51 and a distal part 52, which consist of a pair of side walls and a bottom part. A circular recess 500 is arranged on the bottom wall of the data orientation part 50. The circular recess 500 is used as a data orientation region to which a finger of a user operating the sheath 5 comes into contact.
    [00053] The bottom wall of the finger guidance part 51 is formed as a downward slope towards the front, in a staggered shape. When tilting, protrusions 510 and recesses 511 are arranged repeatedly in order to increase friction against a user's finger.
    [00054] Additionally, the bottom wall of the distal part 52 includes a projected stop 55 that prevents the user's finger from pushing the sheath 5 preventing further movement towards the distal side of the sheath 5. In addition, the bottom wall of the distal part 52 includes a bore 520 which is formed when a locking tongue 57 (or cannula attachment part) is molded. Note that stop 55 is arranged in the vicinity of the central part in the longitudinal direction, or in the position closest to the distal end side of sheath 5, so that a greater impulse is generated to smoothly articulate sheath 5, when a user push sheath 5 with your finger.
    [00055] The sheath 5 includes a collar connection mechanism 54 (or fastening part) having a pair of cylindrical pins 540. The pair of pins 540 must be attached to the ear holes 33 of the ears 31 in the collar 3, so rotatingly connect sheath 5 with collar 3. Here, each pin 540 is chamfered in order to facilitate the connection mentioned above.
    [00056] A pair of flap-like walls 53 is arranged on the proximal end side of the finger guiding part 50. Within the flap-like wall 53, an inclination 530 is provided towards the proximal end 501. Inclination 503 allows the sheath 5 is easily attached to collar 3 (that is, by relatively small force). Additionally, on the front side of the flap-type wall 53, a groove 531 (or cannula fixing part) is arranged that fits with the sheath fixation protrusion 35 of the collar 3. Here, it should be noted that when each fixation protrusion of sheath 35 of collar 3 rotates to fit with the corresponding groove 531, the pair of flap-like walls 53 must be expanded out just before fitting.
    [00057] An opening 58 of the sheath 5 has a locking tongue 57. The locking tongue 57 is formed by a perforation part of the bottom wall of the distal part 52 and protrudes into the side wall located inside the opening. 58. Here, locking tab 57 must be folded when cannula 2 is inserted into opening 58. This allows cannula 2 to move beyond the side of locking tongue 57. Here, locking tongue 57 locks the cannula 2 moved in this way, in addition to the side of the tongue 57, in order to prevent the cannula backward movement 2. This locking occurs automatically in the movement mentioned above. In other words, this permanent locking of the cannula 2 fixed within the sheath 5 can be achieved once the cannula 2 has been introduced in the opening 58 to thus move beyond the side of the locking tongue 57. Here, the rib 56 positions the cannula 2 in the left-right direction when the cannula 2 is inserted into the opening 58.
    [00058] FIG. 6 illustrates the safety needle assembly 100 thus assembled by the respective components. As described above, the safety needle assembly 100 assembled in this way can be packaged in a bubble wrap or similar package in the state of FIG. 6, or can be packaged after the assembly 100 is connected to a syringe (not shown).
    [00059] Next, with reference to Figures 6 and 7, a method of using the safety needle assembly 100 will be explained in the case of a user exposing the cannula 2 of the assembly 100 as illustrated in FIG. 5.
    [00060] First, a user pivots sheath 5 to be away from protector 4 in order to remove protector 4.
    [00061] After the sheath 5 is articulated, the user removes the protector 4 and exposes the cannula 2 (see FIG. 7). In this state, the user can use cannula 2 (for example, to use cannula 2 to collect blood from a patient).
    [00062] Next, with reference to Figures 7 to 9, a method of using the safety needle set 100 will be explained in the case of a user housing the cannula 2 within the sheath 5 of the set 100 in the state of FIG. 7.
    [00063] First, after a user has finished using the cannula 2, the user pivots sheath 5 in the direction of cannula 2 to thereby make the safety needle assembly 100 in the state of FIG. 8.
    [00064] Then, the user pushes the bottom wall of the finger guiding part 51 with a finger against the sheath 5. This allows the sheath 5 to be further articulated in the direction of the cannula 2 as illustrated in figures 9A and 9B. The cannula 2 moves part of the side of the locking tongue 57 to be engaged with the locking tongue 57, and the pair of sheath fixation protrusions 35 of collar 3 are respectively engaged with the corresponding grooves 531 of sheath 5. Thus , cannula 2 is locked into sheath 5. That is, with this timing, cannula 2 is covered by sheath 5, and is additionally locked into sheath 5.
    [00065] As described above, the safety needle set 100 in the present modality allows high security due to its mechanism (that is, guaranteeing a low probability of a user being accidentally injured with the cannula 2). In addition, this also allows for high operating capacity due to its structure in which the sheath 5 has a stop 55 in the vicinity of the central part in the longitudinal direction of the sheath 5, or in the position closer to the distal end side than the part center of sheath 5. In other words, the positioning mentioned above stop 55 allows a user to push sheath 5 with a user's finger on a distal side from the fulcrum (or in the position of pins 540 of sheath 5), resulting in the generation of a greater impulse that allows the sheath 5 to be articulated by a relatively smaller force.
    [00066] Additionally, the pair of flap-like walls 52 having an inclination 530 and a groove 531 in the sheath 5 allowing for a high operating capacity. That is, the flap-like walls 53 projecting from the sheath body 5 are easy to bend outward, and the slopes 530 facilitate the introduction of sheath fixation protrusions 35 into collar 3 in grooves 531. Additionally, grooves 531 allow the sheath fixation protuberances 35 to be fixed. These mechanisms allow the sheath fixation protuberances 35 of the collar 3 to be fitted and fixed in the grooves 531 of the flap-like walls 53 of the sheath 5 with relatively little force when a user pushes the sheath 5 with his finger.
    [00067] Furthermore, a user can articulate sheath 5 by pushing not only the inclination provided with a plurality of protrusions 510 and recesses 511 having a great friction, but also the circular recess 500 in which the user's finger fits easily. Accordingly, this allows a high operating capacity to be achieved.
    [00068] Additionally, the cannula 2 inserted into the opening 58 of the sheath 5 is locked by the locking tongue 57 in addition to the grooves 531 of the flap-like walls 53, making it less likely to expose the cannula 2 after it has been housed within the sheath 5 That is, it makes security even greater.Additionally, the locking tongue 57 is easily molded, allowing the cannula clamping part to be formed at a lower cost.
    [00069] Additionally, each ear 31 of the collar 3 has a chamfer within the ear 31, where the sheath is attached to the collar 3 through the chamfer, allowing the attachment to require a relatively small force.
    [00070] Additionally, it is possible to realize that the pair of sheath fixation protuberances 35 of collar 3 are formed respectively in a substantially triangular shape having a groove 37, which is made from a simple structure.
    [00071] Here, detailed explanations for the modalities have been completed, while the modalities of the present invention are not limited to the examples described above.
    [00072] For example, if there are a plurality of cannulas of different lengths, different sheaths 5 corresponding to the respective lengths can be used in the present invention.
    [00073] Additionally, a variety of modifications can be adequately performed with respect to specific structures without departing from the scope of the present invention. Description of Numerical References 1: Cube 2: Cannula 3: Collar 4: Protector 5: Sheath 10: Distal end 11: Proximal end 12: Hollow hole 13: Rib 14: Rump 15: Ring region with recess 16:17: Staggered part 18: Flange 20: Blade surface 21: Proximal end 22: Distal end 31: Ear (or part of sheath fixation) 32: Chamfer 33: Ear hole 34: Distal end 35: Sheath fixation bulge 36: Circular protrusion 37: Groove 38: Proximal end 39: Hollow end 40: Distal end 41: Proximal end 42: Rib 50 : Finger guiding part 51: Finger guiding part 52: Distal part 53: Flap-type wall (or cannula attachment part) 54: Collar connection mechanism (or attachment part) 55: Stop 56: Rib 57 : Locking tongue (or cannula fixing part la) 58: Aperture 100: Safety needle set 301: Protrusion 302: Ring-shaped protrusion 500: Circular recess 501: Proximal end 510: Protrusion 511: Hole 520: Hole 521: Distal end 530: Slope 531: Groove ( or cannula attachment part) 540: Pin
    权利要求:
    Claims (3)
    [0001]
    1. Set of safety needle (100) with a sheath (5), comprising: a hub (5) including a proximal end connecting with a syringe and a distal end (10); a cannula (2) including a proximal end (21) connecting with the distal end (12) of the hub (1), a lumen extending in a longitudinal direction of the cannula (2), and a distal end (22); a collar (3) attached to the hub (1) and having a sheath attachment part (31); a protector (4) covering the distal end (22) of the cannula (2) being fixed to the hub (1) or collar (3), and being detachable to expose the distal end (22) of the cannula (2); and an opening (58) partially extending along at least one longitudinal direction of the sheath (5) so as to accommodate the cannula (2), in which the sheath (5) additionally comprises: a cannula attachment part (53 , 57, 531) to fix the cannula (2) housed in the opening; a fixing part (54) rotatingly supporting the sheath (5) in a direction of the cannula housing (2) when the protector (4) is detached to expose the distal end (22) of the cannula (2), the part fastening (54) being fixed to the sheath fastening part (31) of the collar (3); and a projected stop (55) disposed in a central part of the sheath (5) in a longitudinal direction in which the central part is located on the opposite side of an opening in the opening (58), or disposed in a position closer to the end distal (521) of the sheath (5) than the central part, so that a user's finger pushes the stop (55) of the sheath (5) to thereby accommodate the cannula (2) in the opening ( 58), characterized by the fact that the sheath (5) comprises a circular recess (500) used as a finger orientation region with which a finger of a user operating the sheath (5) comes into contact, the circular recess (500) being arranged in a position closer to a proximal end side than the stop (55) located on the opposite side of an opening in the opening (58), and a slope having a plurality of protrusions (510) and recesses (511) with a high resistance to friction between the circular recess (500) and the stop (55).
    [0002]
    2. Safety needle assembly (100) according to claim 1, characterized in that the sheath (5) comprises a locking tongue (57) as a cannula fixing part that protrudes from a side wall of the opening (58) into the opening (58), the locking tab (57) passing the cannula (2) inserted into the opening (58) and then locking the cannula (2).
    [0003]
    3. Safety needle set, according to king-vindication 1 or 2, characterized by the fact that a fixation part (54) of the sheath (5) consists of cylindrical pins (540), and a fixation part The collar hem (3) consists of projected ears including a pair of hollow holes (33), each of which houses the cylindrical pin (540), and internal chamfers (32), each of which receives the cylindrical pin ( 540).
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    同族专利:
    公开号 | 公开日
    WO2012111560A1|2012-08-23|
    AU2012218684B2|2016-09-08|
    JP5896927B2|2016-03-30|
    CA2827415A1|2012-08-23|
    US20130331793A1|2013-12-12|
    AU2016213847A1|2016-09-01|
    CN103338803B|2016-11-09|
    EP2676693A4|2017-06-28|
    US20180085534A1|2018-03-29|
    JPWO2012111560A1|2014-07-07|
    EP2676693A1|2013-12-25|
    CA2827415C|2018-10-23|
    BR112013020087A2|2016-10-25|
    US11202868B2|2021-12-21|
    AU2016213847B2|2017-06-29|
    US9861761B2|2018-01-09|
    EP3603707A1|2020-02-05|
    MY162389A|2017-06-15|
    EP2676693B1|2019-09-11|
    CN103338803A|2013-10-02|
    AU2012218684A1|2013-10-03|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-15| 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 10/02/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2011028075|2011-02-14|
    JP2011-028075|2011-02-14|
    PCT/JP2012/053136|WO2012111560A1|2011-02-14|2012-02-10|Safety needle assembly|
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