Medical Device with Retractable Needle and Moveable Plunger Seal

    公开(公告)号:US20170239426A1

    公开(公告)日:2017-08-24

    申请号:US15590556

    申请日:2017-05-09

    发明人: Thomas J. Shaw Ni Zhu

    IPC分类号: A61M5/32

    摘要: A medical device having a barrel, a retractable needle, a needle retraction assembly and a plunger, the needle retraction assembly including and being held inside the barrel prior to retraction at least in part by a retainer member contacting the barrel, the plunger comprising a plunger seal with an body having at least a portion that is rearwardly moveable relative to the plunger and an elastomeric web that seals a retraction cavity inside the plunger prior to retraction of the needle, the retainer member and the plunger seal each cooperating with an inside wall of the barrel to provide a sealed liquid containment chamber inside the device.

    Syringe with syringe barrel, syringe head and ejector unit
    5.
    发明授权
    Syringe with syringe barrel, syringe head and ejector unit 有权
    注射器注射器,注射器头和喷射器单元

    公开(公告)号:US09289563B2

    公开(公告)日:2016-03-22

    申请号:US14000927

    申请日:2012-02-23

    摘要: The invention relates to a syringe (20) comprising a syringe barrel (15), an ejector unit (25) arranged at the distal end of the syringe barrel (15) with a plunger rod (17), a coupling part (37) and a plunger (16) and a syringe head (21) arranged at the proximal end of the syringe barrel (15) with a needle unit (12) which is arranged in a guide sleeve (5) and is slidable therein with a cannula (3) and a cannula holder (4) and a pinion (2), by means of which the needle unit (12) is axially movable, relative to a syringe barrel (15) from a rest position to an actuation position. At the distal end of the guide sleeve (5) a sealing element (7) is arranged. The pinion (2) has at least one guide knob (1), which can be brought into engagement optionally with one of two slide tracks (10) provided in the guide sleeve (5), wherein the slide tracks (10) are inclined in opposite directions.

    摘要翻译: 本发明涉及一种注射器(20),其包括注射器筒(15),排出器单元(25),其布置在注射器筒(15)的远端处,具有柱塞杆(17),联接部分(37)和 柱塞(16)和注射器头部(21),其布置在注射器筒体(15)的近端处,具有布置在引导套筒(5)中的针单元(12),并且可以用套管(3) )和套管保持器(4)和小齿轮(2),针单元(12)可相对于注射器筒(15)从静止位置轴向移动到致动位置。 在引导套(5)的远端设置密封元件(7)。 所述小齿轮(2)具有至少一个导向旋钮(1),所述至少一个导向旋钮可被选择性地与设置在所述导向套筒(5)中的两个滑动轨道(10)中的一个接合,其中所述滑动轨道(10) 相反的方向

    Retractable Syringe with a Cutting Crown
    6.
    发明申请
    Retractable Syringe with a Cutting Crown 审中-公开
    带切割冠的伸缩式注射器

    公开(公告)号:US20150011945A1

    公开(公告)日:2015-01-08

    申请号:US14494602

    申请日:2014-09-24

    发明人: Teoh Hwa ANG

    IPC分类号: A61M5/34 A61M5/32

    摘要: A retractable syringe comprises a cutting head mounted on a plunger of the syringe. When the plunger is advanced to expel fluid from the syringe, the cutting crown cuts a retention mechanism which holds a needle unit of the syringe, allowing a drive mechanism to drive the needle unit into the syringe. The cutting crown is shaped to reduce the force which has to be applied to cut the retention mechanism. Furthermore, a disposable needle assembly for attachment to a syringe unit comprises a needle and connector element for connecting the needle to the syringe unit. The connector element encircles the needle and has a thread on its outer surface for mating with the syringe unit. When the needle assembly is mated with the syringe, a central bore of substantially constant bore extends from the tip of the needle into the interior chamber of the syringe.

    摘要翻译: 可缩回注射器包括安装在注射器的柱塞上的切割头。 当柱塞前进以从注射器排出流体时,切割冠切割保持注射器的针单元的保持机构,允许驱动机构将针单元驱动到注射器中。 切割冠被成形为减小必须施加的切割保持机构的力。 此外,用于附接到注射器单元的一次性针组件包括用于将针连接到注射器单元的针和连接器元件。 连接器元件围绕针并且在其外表面上具有用于与注射器单元配合的螺纹。 当针组件与注射器配合时,基本恒定的孔的中心孔从针的尖端延伸到注射器的内部腔室中。

    SYRINGE WITH SYRINGE BARREL, SYRINGE HEAD AND EJECTOR UNIT
    7.
    发明申请
    SYRINGE WITH SYRINGE BARREL, SYRINGE HEAD AND EJECTOR UNIT 有权
    SYRINGE与SYRINGE BARREL,SYRINGE HEAD AND EJECTOR UNIT

    公开(公告)号:US20140052071A1

    公开(公告)日:2014-02-20

    申请号:US14000927

    申请日:2012-02-23

    IPC分类号: A61M5/34

    摘要: The invention relates to a syringe (20) comprising a syringe barrel (15), an ejector unit (25) arranged at the distal end of the syringe barrel (15) with a plunger rod (17), a coupling part (37) and a plunger (16) and a syringe head (21) arranged at the proximal end of the syringe barrel (15) with a needle unit (12) which is arranged in a guide sleeve (5) and is slidable therein with a cannula (3) and a cannula holder (4) and a pinion (2), by means of which the needle unit (12) is axially movable, relative to a syringe barrel (15) from a rest position to an actuation position. At the distal end of the guide sleeve (5) a sealing element (7) is arranged. The pinion (2) has at least one guide knob (1), which can be brought into engagement optionally with one of two slide tracks (10) provided in the guide sleeve (5), wherein the slide tracks (10) are inclined in opposite directions.

    摘要翻译: 本发明涉及一种注射器(20),其包括注射器筒(15),排出器单元(25),其布置在注射器筒(15)的远端处,具有柱塞杆(17),联接部分(37)和 柱塞(16)和注射器头部(21),其布置在注射器筒体(15)的近端处,具有布置在引导套筒(5)中的针单元(12),并且可以用套管(3) )和套管保持器(4)和小齿轮(2),针单元(12)可相对于注射器筒(15)从静止位置轴向移动到致动位置。 在引导套(5)的远端设置密封元件(7)。 所述小齿轮(2)具有至少一个导向旋钮(1),所述至少一个导向旋钮可被选择性地与设置在所述导向套筒(5)中的两个滑动轨道(10)中的一个接合,其中所述滑动轨道(10) 相反的方向

    Single-use pneumatic safety syringe providing gas-driven needle retraction
    8.
    发明授权
    Single-use pneumatic safety syringe providing gas-driven needle retraction 有权
    一次性气动安全注射器提供气动针回缩

    公开(公告)号:US08523810B2

    公开(公告)日:2013-09-03

    申请号:US13430382

    申请日:2012-03-26

    申请人: John Klippenstein

    发明人: John Klippenstein

    IPC分类号: A61M5/00

    摘要: A pneumatic retractable syringe has a plunger having an interior retraction lumen. The plunger and syringe barrel have cooperating locking elements so that the plunger is locked after use within the syringe barrel. After injection of medicament is completed, the needle is retracted into the lumen by compressed gas that is released from a gas cell within the syringe when the gas cell is ruptured just before the plunger reaches the end of its downstream path of travel.

    摘要翻译: 气动可伸缩注射器具有具有内部回缩腔的柱塞。 柱塞和注射器筒具有协作的锁定元件,使得柱塞在使用后在注射器筒内被锁定。 注射药物完成后,当气囊在其下游行进路径的末端之前气瓶被破裂时,通过压缩气体从针筒内的气体细胞释放出的针头缩回到内腔中。

    Retractable Syringe with a Cutting Crown

    公开(公告)号:US20130053773A1

    公开(公告)日:2013-02-28

    申请号:US13696617

    申请日:2010-12-31

    申请人: Teoh Hwa Ang

    发明人: Teoh Hwa Ang

    IPC分类号: A61M5/50 A61M5/32 A61M5/34

    摘要: A retractable syringe comprises a cutting head mounted on a plunger of the syringe. When the plunger is advanced to expel fluid from the syringe, the cutting crown cuts a retention mechanism which holds a needle unit of the syringe, allowing a drive mechanism to drive the needle unit into the syringe. The cutting crown is shaped to reduce the force which has to be applied to cut the retention mechanism. Furthermore, a disposable needle assembly for attachment to a syringe unit comprises a needle and connector element for connecting the needle to the syringe unit. The connector element encircles the needle and has a thread on its outer surface for mating with the syringe unit. When the needle assembly is mated with the syringe, a central bore of substantially constant bore extends from the tip of the needle into the interior chamber of the syringe.

    Cutting element for a retracting needle syringe
    10.
    发明授权
    Cutting element for a retracting needle syringe 有权
    回针注射器的切割元件

    公开(公告)号:US08277409B2

    公开(公告)日:2012-10-02

    申请号:US11294256

    申请日:2005-12-05

    IPC分类号: A61M5/00

    摘要: A cutting element for a retracting needle syringe having a plunger with a cuttable distal end and a spring biased needle held by a cuttable support and a cutting element capable of cutting the cuttable distal end and the cuttable support includes a body portion having a proximal end, a distal end side wall therebetween and a passageway therethrough. The distal end of the body portion includes a cutting edge and a raised distally projecting tapered cutting tooth having distally converging edges. At least one tooth edge includes a sharp side wall for cutting the distal end of the plunger and the needle support.

    摘要翻译: 一种用于具有可切割远端的柱塞和由可切割支撑件保持的弹簧偏压针的回缩针注射器的切割元件和能够切割可切割远端和可切割支撑件的切割元件,包括主体部分,其具有近端, 其间的远端侧壁和通过其的通道。 主体部分的远端包括切割边缘和具有远侧会聚边缘的凸起的远端突出的锥形切割齿。 至少一个齿缘包括用于切割柱塞的远端和针支撑件的锋利的侧壁。