• 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:
    A dose metering device for use with a syringe comprises a fixed screwthreaded member (17) which is either integral with or fixed in use to the cylinder (10) of the syringe and is in threaded engagement with a screwthreaded plunger (13) which can be rotated by a manually-rotatable cap (30) acting through a ratchet and pawl mechanism (32, 34) whose ratchet wheel (26) drives a driving rod (24) which is slidably keyed to the plunger (13). The plunger engages the piston or plug (11) of the syringe. A stop (42) limits rotation of the cap (30) which can be turned away from the stop through a variable angle to a selected angular position shown on a scale (39) of volumetric dose units, the pawl (32 overriding the ratchet teeth (34), to preset a dose to be expressed. The cap (30) can then be turned back to the stop, rotating the plunger (13) via the ratchet and pawl mechanism and causing the plunger to advance the syringe piston or plug (11) through a corresponding axial distance so as to express a metered dose, corresponding to the setting preset on the scale, from the syringe. A succession of preset doses, of the same or different volumes can thus be expressed from the syringe until it is empty. The syringe may employ a prefilled ampoule (50B) of dose liquid which is sealed by a sliding plug (11B) engaged in use by the screw plunger (13B).
    公开号:SU1528330A3
    申请号:SU823511953
    申请日:1982-10-11
    公开日:1989-12-07
    发明作者:Чарльз Турнер Роберт；Бэзил Стоун Энтони；Регинальд Холман Рури
    申请人:Turner Robert Charles；Stone Anthony B；Holman Rury Reginald；
    IPC主号:
    专利说明:

    H

    01
    The invention relates to medical technology, namely to devices for dispensing a syringe.
    The aim of the invention is to improve the measurement accuracy,
    Fig, 1 shows the proposed device in detail, placed in the cylinder of the syringe; in fig. 2 is the same side view with a partial cut; FIG. 3 is a view A of FIG. 2; FIG. 4 is a section BB in FIG. 2; in FIG. 5 a dosing device, side view; in FIG. 6, via B in FIG. 5; FIG. 7 is a view of FIG. 5; on Fig - syringe, General view with a metering device.
    The syringe includes a housing I and a piston 2, a cylindrical element 3 with an internal thread 4 is installed concentrically inside the housing, and a plunger 5 with an external thread 6, which corresponds to the thread A, Plunger 5 has a head 7, which, when assembled, enters the piston 2. Threads 4 and 6 may have a different pitch. The device has a device for setting the dose, containing the actuator, which includes a ratchet rod 9 placed inside the hole 8 of the plunger 5, mounted for movement along the plunger, while the rod 9 has a square or any other non-circular cross section, a sleeve 11 that is attached to the ratchet 10 with the screw 12, the dog 13, located inside the sleeve 1 1 and made in the form of a spring strip, the bent end of which is the tooth 14 of the dog 13, which interacts with the ratchet teeth 15, when metering If the device is inserted into the housing 1, the sleeve 11 can be rotated manually counterclockwise (Figs. 3 and 6), but it will not rotate the plunger 5, because the pawl 13 moves along the ratchet teeth 15, Friction between the interacting threads. 4 and 6 are selected significantly more than the friction between the pawl 13 and the ratchet teeth 15 during this counterclockwise rotation of the sleeve 11, so that the plunger 5 does not rotate. In addition, it is possible to prevent the plunger 5 from rotating when the sleeve 11 is rotated by means of a sealing ring 16 on the head / plunger, although an air outlet is required to prevent air from getting
    five
    0
    five
    0
    five
    0
    five
    0
    five
    the spirit between the piston 2 and the plunger head 7. and as a result of the movement of the piston 2 during insertion and removal of the metering device.
    When the sleeve 11 rotates in the opposite direction, the pawl 13 engages with one of the ratchet teeth 15 and causes the rod 9 to rotate the plunger 5, and the interacting threads 4 and 6 act as a spindle to move the rotating 5 inwards and lower the piston 2 into the housing 1, The clamp 17 prevents the ejection of the cylindrical element 3 from the housing 1,
    An indicator disk 18 with a scale of 19 volume units of dose is mounted on the end of element 3 between sleeve 11 and clamp 17. Disk 18 can be made fully with element 3. Sleeve 11 is held from axial removal from element 3 with screws 20 that fit into the holes In the wall of the sleeve and in the annular groove formed on the sleeve 21 of the indicator disc 18, the sleeve 11 has a dose indicator 22, which acts in conjunction with a scale 19. If the sleeve 11 is rotated clockwise to the position indicated in FIG. 3, where the indicator 22 combined with n on the scale 19, the clockwise rotation of the sleeve 11 is prevented by the pointer 22 being engaged with the stopper 23 removably screwed onto the disk 21.
    The device works as follows.
    During operation, the amount of fluid to be infused, such as insulin for injection in metered doses, is introduced into the housing 1, the piston 2 is inserted into it, the plunger 5 is completely screwed inside the cylindrical element 3 with the stopper 23 removed for free rotation of the bushings 11 relative to the element 3, and the stopper 23 is then screwed back to its working position on a scale of 19, the dosing device is then inserted into the housing body B and pushed all the way until it stops until the clamp 17 engages with the housing flange. Now the syringe is ready for use,
    To set the dose rate for the distribution or injection, the sleeve 11 is first rotated
    arrows, FIG. 3) until the pointer 22 reaches the index mark on the scale 19, which corresponds to the required dose. This rotation does not drive the plunger 5, because the pawl 13 moves along the serrated teeth 15. To distribute or inject the dose that is set in this way, the sleeve 11 now rotates manually clockwise (FIG. 3) until the pointer 22 reaches the zero mark and the stopper 23 will not prevent further rotation of the sleeve. This rotation causes the ram 5 to rotate by the corresponding angle by the ratchet mechanism, at the same time it moves forward along the axis for the corresponding distance as a result of the interaction of the threads 4 and 6, moving the piston 2 inwards, squeezing out the measured doses of fluid from the cylinder. If a needle is installed on the syringe, the metered doses can be injected subcutaneously.
    The operation can be repeated to sequentially distribute the measured doses of the same or different quantities, each setting 14 by rotating the sleeve to the required index mark or indicator scale until the syringe is empty when it can be refilled for future use. An empty syringe can be thrown out and replaced with another pre-filled syringe, while the liquid is held by piston 2, and the dosing device is inserted into the cylinder of the replaced syringe before use, after screwing the plunger 5 back into element 3 as described,
    Although the stopper 23 (FIGS. 1-8J for the pointer is detachably attached to the element 3 in the form of a lead screw and long
    five
    0
    five
    0
    five
    0
    wives are removed from the element before the plunger 5 is fully screwed into the element 3 after a series of squeezing doses, other devices are possible. For example, a stopper hooked by the pointer may carry the body of the syringe itself, for example, as part of a bayonet connection for a non-actuating screw spindle element. In this case, the metering device is simply removed from the syringe barrel in front of the return screw. the plunger so that the stopper on the body no longer prevents the plunger from turning.
    The proposed device is intended to be directly performed by the liquid being metered,
    In the proposed device, the accuracy of dose measurement is improved.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A device for dosing to a syringe, containing a cylindrical element with an internal thread and concentrically mounted inside the syringe body and having a plunger and a piston arranged for movement with different pitch, as well as a device for setting a dose of liquid, including a disc with a scale and a stop. that, in order to improve the accuracy of dose measurement, the device for setting the dose of fluid contains an actuator that includes a rod with a snore located inside the plunger with the ability to move along it Wick and bushing with a pawl for communicating the rotary movement rod and dose indicator, wherein the stopper is mounted on the disk, and the dose indicator is installed with possibility of interaction with the stopper.
    FIG. 2
    9,
    Vida
    FIG.
    . Vb
    FIG.
    Type B
    FIG. 6
    yy
    fw /
    ; /
    72
    h-ix
    5
    type G
    15
    eleven
    Editor M.Blanar
    Compiled by R.Stanina T e xp ed M. Didyk
    Order 7520/58
    Circulation 526
    VNIIPI State (1st Committee on Inventions and Discoveries under the State Committee on Science and Technology of the USSR P30;) 5, Moscow, Zh-35, Raushsk iab. 4/5
    Fiz.v
    Proofreader M.Maksimishinets
    Prepared by
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1528330A3|1989-12-07|Metering device to syringe
    US5304152A|1994-04-19|Dispensing device
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    US5240146A|1993-08-31|Variable proportion dispenser
    EP0554995B1|1997-12-17|Reusable medication delivery pen
    KR900008011B1|1990-10-29|A device for a syringe
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    EP0536366B1|1996-06-19|Injection device
    PL214935B1|2013-09-30|Indication mechanism of an automatic applicator, especially for insulin
    RU2083232C1|1997-07-10|Medical syringe
    CN113301931A|2021-08-24|Injection device
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    CS262548B1|1989-03-14|Mechanical doser of liquid, esp. insuline
    同族专利:
    公开号 | 公开日
    AU549188B2|1986-01-16|
    EP0058536A1|1982-08-25|
    GB2109690B|1985-02-20|
    JPS58500102A|1983-01-20|
    US4498904A|1985-02-12|
    BR8206161A|1983-01-11|
    DK451682A|1982-10-12|
    IE52621B1|1988-01-06|
    EP0058536B1|1986-04-16|
    DK168364B1|1994-03-21|
    WO1982002662A1|1982-08-19|
    GB2109690A|1983-06-08|
    JPH0567308B2|1993-09-24|
    DE3270548D1|1986-05-22|
    AU8084282A|1982-08-26|
    IE820302L|1982-08-12|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB8104323|1981-02-12|
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