WO2017016092A1 - 正压免针注射y型接头装置 - Google Patents

正压免针注射y型接头装置 Download PDF

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Publication number
WO2017016092A1
WO2017016092A1 PCT/CN2015/093819 CN2015093819W WO2017016092A1 WO 2017016092 A1 WO2017016092 A1 WO 2017016092A1 CN 2015093819 W CN2015093819 W CN 2015093819W WO 2017016092 A1 WO2017016092 A1 WO 2017016092A1
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Prior art keywords
injection
needle
pressure
tube
positive pressure
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English (en)
French (fr)
Inventor
郭永斌
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CHIA CHERNE INDUSTRY Co Ltd
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CHIA CHERNE INDUSTRY Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor

Definitions

  • the utility model relates to a Y-type joint device, in particular to a positive pressure needle-free injection Y-joint device.
  • the infusion bag In the case of intravenous infusion of the patient (the infusion may be blood, physiological saline, drugs, nutrients, etc.), in addition to the use of a syringe to pressurize manually, and use other special equipment for pressurization (pump plus In addition to the method of pressing), the infusion bag is generally hung in a high position, so that the infusion can enter the vein of the human body through the catheter and the indwelling needle by gravity. Between the catheter and the indwelling needle, a Y-joint device is usually used to increase or modify the composition of the infusion.
  • the object of the present invention is to provide a positive pressure needle-free injection Y-joint device for preventing infusion and blood return when intravenously using gravity to avoid the problem of clogging of the indwelling needle.
  • a positive pressure needle-free injection Y-joint device comprising: a Y-shaped tube having an input tube portion and an injection tube portion connected to each other and An output tube portion having a limiting portion and a needle-free injection interface portion, the limiting portion is formed by an inner wall of the injection tube portion extending toward a center of the injection tube portion and enclosing an injection inlet;
  • the needle-free injection interface portion is located on the opposite side of the injection inlet of the injection tube portion and has a syringe interface that substantially matches the needle-free injector; and an elastic sealing member disposed in the injection tube portion, the elastic sealing member
  • the pressure receiving head has a pressure receiving portion, the pressure receiving head has a sealing portion, and the sealing portion substantially closely contacts the syringe interface, and the side of the pressure receiving head is formed with a notch portion.
  • a flow space is formed between the outer surface of the pressure body and the inner surface of the injection tube portion, and the pressure seat has a concave portion to form a compression space, and the concave portion is disposed at the limiting portion to cover the injection liquid inlet.
  • the stopper portion At the junction of the stopper portion is formed with a fluid passage communicating with the flow space of the injection inlet, wherein when the needle-free syringe from the interface when the syringe is inserted, the pressure head component elastic sealing member Pressing through the notch portion to be bent, and being inwardly retracted by the pressure of the pressure receiving seat, the adhesion portion of the pressure receiving head is separated from the syringe interface and the outer surface of the pressure receiving head is Forming a gap between the inner surfaces of the injection tube portion to allow the syringe interface to communicate with the injection port through the gap space, the flow space and the fluid passage, when the needle-free injector is detached from the syringe interface, The elastic sealing member elastically returns to the original shape, and the liquid volume difference is generated with respect to the pressure, and the liquid volume difference causes a positive pressure to the liquid to the injection inlet.
  • a positive pressure needle-free injection Y-joint device is provided, which is formed into a hollow hemispherical structure.
  • a positive pressure needle-free injection Y-joint device is provided, the outer diameter of the compression body being tapered in a direction of the injector interface toward the injection solution inlet.
  • a positive pressure needle-free injection Y-joint device is provided, and an intersection of the pressure body and the pressure seat is formed at an angle greater than 90 degrees.
  • a positive pressure needle-free injection Y-joint device is provided, and a hollow space is formed in the interior of the pressure body, and the hollow space is connected to the compression space.
  • a positive pressure needle-free injection Y-joint device wherein the inner annular surface of the needle-free injection interface portion is formed with a reduced diameter inner edge portion, and the pressure body has a corresponding
  • the radially outer edge portion of the reduced diameter inner edge portion has an inner diameter smaller than the outer diameter of the radially outer edge portion, and the radially outer edge portion is restricted by the inner diameter portion of the reduced diameter.
  • a positive pressure needle-free injection Y-joint device is provided, the injection tube portion includes a cover member and a body member that are sleeved with each other, the body member and the output tube portion and the body portion The input tube portion is connected, the needleless injection interface portion is located at the cover body member, and the limiting portion is located at the tubular body member.
  • a positive pressure needle-free injection Y-joint device is provided, and the notch portion is a notch formed by a concave at a single-sided position of the pressure receiving head.
  • a positive pressure needle-free injection Y-joint device in an embodiment of the present invention, the Y-shaped tube includes a straight tube and a tilt tube, the inclined tube is obliquely connected to the straight tube, and the injection tube portion and the The output pipe portion constitutes the straight pipe, and the input pipe portion serves as the inclined pipe.
  • a positive pressure needle-free injection Y-joint device is provided, and the outer diameter surface of the pressure receiving seat is provided with a plurality of convex ring portions protruding radially.
  • a positive pressure needle-free injection Y-joint device is provided, the notch portion being curved.
  • the positive pressure needle-free injection Y-joint device of the utility model has the following effects.
  • the elastic sealing member can quickly rebound back to the original shape, and due to the deformation of the elastic sealing member
  • the volume in the Y-shaped tube is made smaller, and the effect of positive pressure can be generated, thereby strengthening the force of the infusion to the indwelling needle, so that the infusion does not remain in the indwelling needle, and the venous blood is not easily recirculated, thereby avoiding the indwelling needle.
  • the problem of blockage is a problem of blockage.
  • FIG. 1 is a front elevational view of a positive pressure needle-free injection Y-joint device in accordance with an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a positive pressure needle-free injection Y-joint device in accordance with this embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a positive pressure needle-free injection Y-joint device in accordance with this embodiment of the present invention.
  • FIG. 4 is a schematic view of a positive pressure needle-free injection Y-joint device according to this embodiment of the present invention at the time of injection insertion.
  • Figure 5 is a schematic illustration of a positive pressure needle-free injection Y-joint device in accordance with this embodiment of the present invention when the syringe is withdrawn.
  • Figure 6 is a schematic illustration of a positive pressure needle-free injection Y-joint device in use in accordance with this embodiment of the present invention.
  • Figure 7 is a schematic illustration of an elastomeric sealing member in accordance with another embodiment of the present invention.
  • a positive pressure needle-free injection Y-joint device 100 comprises: a Y-tube 1 and an elastic sealing member 2.
  • the Y-shaped tube 1 has an input tube portion 11, a syringe tube portion 12, and an output tube portion 13 that communicate with each other.
  • the Y-shaped tube 1 includes a straight tube and a tilting tube obliquely connected to the straight tube, and the injection tube portion 12 and the output tube portion 13 constitute the straight tube, and the input tube portion 11 serves as the inclined tube.
  • the injection tube portion 12 includes a body member 121 and a cover member 122 that are sleeved with each other.
  • the body member 121 is connected to the input pipe portion 11 and the output pipe portion 13.
  • the body member 121 has a limiting portion 123.
  • the limiting portion 123 is formed by extending the inner wall of the tubular member 121 toward the center of the body member 121 (ie, the center of the tubular member 121) and enclosing the injection inlet 124.
  • the cover member 122 has a needleless injection interface portion 125 located on the opposite side of the injection inlet 124 of the injection tube portion 12, and the needleless injection interface portion 125 has a substantially matched needleless syringe I (see Figure 5) syringe interface 126.
  • the elastic sealing member 2 is disposed in the injection tube portion 12.
  • the elastic sealing member 2 has a pressure receiving head 21, a pressing body 22, and a pressure receiving seat 23 in sequence.
  • the pressure head 21 has a contact portion 211 (Fig. 4) that substantially abuts the syringe interface 126 (Fig. 2). Specifically, the diameter of the contact portion 211 is slightly larger than the syringe interface 126.
  • the side of the pressure receiving head 21 is formed with a notch portion 212. Specifically, the notch portion 212 is a notch formed by a recess at one side of the pressure receiving head 21 .
  • the notch portion 212 has an arc shape, and the curvature formed by the arc shape makes the notch portion 212 easy to be bent and deformed, and the needle-free injector 1 can be further reduced to be inserted into the syringe interface 1111.
  • the present invention is not limited to the arc shape of the notch portion 212.
  • the notch portion 212a of the elastic sealing member 2a is substantially V-shaped to be suitable for other use conditions.
  • the outer surface of the pressing body 22 and the body member There is a flow space S between the inner surfaces of 121.
  • the pressure receiving seat 23 is formed in a hollow hemispherical structure.
  • the pressure receiving seat 23 has a concave portion 231 to form a compression space S1.
  • the recessed portion 231 is disposed on the limiting portion 123 to cover the injection liquid inlet 124, and a fluid connecting the flow space S and the injection liquid inlet 124 is formed at a boundary between the pressure receiving seat 23 and the limiting portion 123.
  • Pathway P a plurality of convex ring portions 232 are radially protruded from the outer diameter surface of the pressure receiving seat 23, and the plurality of convex ring portions 232 are used to increase the elastic restoring force of the pressure receiving seat 23, and When the needle-free injector 1 is pulled out from the syringe port 126, the elastic sealing member 2 is quickly rebounded to restore the original shape.
  • the present invention is not limited to the pressure receiving seat 23 in which the plurality of convex ring portions 232 are formed.
  • the outer diameter surface of the pressure receiving seat 23a of the elastic sealing member 2a can be made smooth without protrusion for manufacturing.
  • the inside of the pressing body 22 is formed with a hollow space S2, and the hollow space S2 is connected to the compression space S1.
  • the limiting portion 123 is provided with two or more bumps 127 arranged at intervals, and the fluid passage is formed between each two adjacent bumps 127. P.
  • the pressure seat 23 is placed on the plurality of bumps 127.
  • the fluid passage P and the flow space S are kept in communication by the plurality of bumps 127.
  • the fluid passage P may be a passage provided in the limiting portion 123.
  • the positive pressure needle-free injection Y-joint device 100 is connected to a blood vessel (for example, a hand vein) inserted into the living body 400 by being connected to the tubular body 300.
  • the indwelling needle 500 is a blood vessel (for example, a hand vein) inserted into the living body 400 by being connected to the tubular body 300.
  • the elastic sealing member 2 is pressed by the needle-free injector 1 to disengage the close-contact portion 211 of the pressure-receiving head 21 from the syringe interface. 126 and a gap space is formed between the outer surface of the pressure receiving head and the inner surface of the injection tube portion, so that the syringe interface 126 communicates with the injection liquid through the notch space, the flow space S and the fluid passage P.
  • the inlet 124 facilitates the injection.
  • the elastic sealing member 2 rebounds to restore the original shape, so that the compression space S1 and the hollow space S2 are restored to their original size, and
  • the flow space S is made smaller, and the liquid volume difference is generated with respect to the pressure, the liquid volume difference causes a positive pressure to the liquid inlet 124 and a positive pressure is generated in the flow space S, so that the flow space
  • the infusion liquid L in S is injected into the living body 3 by the positive pressure pushing and entering the delivery tube portion 13 to the indwelling needle 3 via the injection solution inlet 124.
  • the inner annular surface of the needleless injection interface portion 125 is formed with a reduced diameter inner edge portion 128, and the pressing body 22 has a radially outer edge portion corresponding to the reduced diameter inner edge portion 128. 221, the inner diameter of the reduced diameter inner edge portion 128 is smaller than the outer diameter of the radially outer edge portion 221, and the radially outer edge portion 221 is limited by the reduced diameter inner edge portion 128.
  • the radially outer edge portion may also be disposed on the pressure receiving head, and the reduced diameter inner edge portion 128 is provided corresponding to the radially outer edge portion to limit the elastic sealing member to the injection tube portion 12.
  • the positive pressure needle-free injection Y-joint device 100 has an outer diameter of the pressing body 22 in a direction toward the injection port 124 of the injector port 126. Shrink to reduce the elastic seal Piece 2 produces resistance to deformation when pressed.
  • the junction of the pressing body 22 and the pressure receiving seat 23 is formed with an angle ⁇ greater than 90 degrees.

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一种正压免针注射Y型接头装置（100），包括Y型管（1）及弹性密封构件（2），该Y型管（1）具有限位部（123）及无针注射接口部（125），该无针注射接口部（125）具有实质匹配无针注射器的注射器接口（126），该弹性密封构件（2）设置于该注射管部（12）之中，且依序相连地具有受压头（21）、压动体（22）以及受压座（23），该受压头（21）具有密合部（211），该密合部（211）实质密合该注射器接口（126），该受压头（21）的侧边形成有缺口部（212），该压动体（22）的外表面与该注射管部（12）的内表面之间具有一流动空间（S），在拔除无针注射器时，通过该弹性密封构件（2）因变形所产生的回弹力产生一正压，使得注射输液或血液不易回流，藉以避免留置针（500）发生堵塞的问题。

Description

正压免针注射Y型接头装置
相关申请
本实用新型申请要求2015年07月29日申请的，申请号为201520558133.0，名称为“正压免针注射Y型接头装置”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本实用新型涉及一种Y型接头装置，特别涉及一种正压免针注射Y型接头装置。
背景技术
在对患者进行静脉注射输液时(其输液可能为血液、生理食盐水、药物、营养剂…等)，除了使用针筒以人力加压的方式、以及使用其它特殊器材进行加压(泵浦加压)的方式之外，一般皆将输液袋吊挂于高处位置，使输液能利用重力经由导管、留置针而进入于人体的静脉内。于导管及留置针之间，通常会配合使用Y型接头装置，有利于增加或更改输液的成分。
然而，当注射完成而将注射器拔出时，会造成导管及留置针内的压力产生变化，而容易导致输液及静脉血液回流的情况发生。输液及静脉血液回流容易造成患者的恐慌与惊吓，或甚至会造成留置针内发生阻塞的情形。一旦留置针发生阻塞的情形则必须在进行人工清洗使其畅通，而后再重新对患者进行皮下穿刺，如此一来不仅对病患造成了痛苦，也增加了医疗费用及护理人员的工作量。
实用新型内容
因此，本实用新型的目的即在提供一种正压免针注射Y型接头装置，用以在利用重力进行静脉注射时防止输液及血液回流，以避免发生留置针堵塞的问题。
本实用新型为解决现有技术的问题所采用的技术手段为提供一种正压免针注射Y型接头装置，包含：一Y型管，具有互相连通的一输入管部、一注射管部及一输出管部，该注射管部具有限位部及无针注射接口部，该限位部系于该注射管部的内壁面向该注射管部的环心延伸而形成并围出注射液入口，该无针注射接口部系位在该注射管部的注射液入口的对向侧并具有实质匹配无针注射器的注射器接口；以及弹性密封构件，设置于该注射管部之中，该弹性密封构件依序相连地具有受压头、压动体以及受压座，该受压头具有密合部，该密合部系实质密合该注射器接口，该受压头的侧边形成有缺口部，该压动体的外表面与该注射管部的内表面之间具有一流动空间，该受压座具有凹部而形成一压缩空间，该凹部设置于该限位部而罩覆该注射液入口，且在该受压座与该限位部的交界处形成有连通该流动空间与该注射液入口的流体通路，其中当该无针注射器自该注射器接口插入时，该弹性密封构件的受压头系 经受压而通过该缺口部而弯折，并且通过该受压座的受压而向内缩入，使该受压头的密合部脱离该注射器接口且该受压头的外表面与该注射管部的内表面之间形成有一缺口空间，以使该注射器接口通过该缺口空间、该流动空间及该流体通路而连通至该注射液入口，当该无针注射器自该注射器接口拔除时，该弹性密封构件弹力回复至原本形体，而相对于受压时产生液体容积差，该液体容积差系对该液体造成流向该注射液入口的正压。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该受压座形成为中空的半球结构。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该压动体的外径于该注射器接口朝向该注射液入口的方向上为渐缩。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该压动体与该受压座的连接处形成有大于90度的夹角。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该压动体的内部形成有一中空空间，该中空空间连通于该压缩空间。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该无针注射接口部的内环面凸伸形成有缩径内缘部，且该压动体具有对应于该缩径内缘部的径向外缘部，该缩径内缘部的内径小于该径向外缘部的外径，使该径向外缘部受该缩径内缘部的限位。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该注射管部包括相互套接的盖体件及管身件，该管身件与该输出管部及该输入管部相连接，该无针注射接口部位于该盖体件，该限位部位于该管身件。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该缺口部为由该受压头的单侧位置处内凹所形成的缺口。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该Y型管包括直管及倾斜管，该倾斜管倾斜地相连于该直管，该注射管部与该输出管部构成该直管，该输入管部作为该倾斜管。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该受压座的外径面设置有径向凸出的复数个凸环部。
在本实用新型的一实施例中提供一种正压免针注射Y型接头装置，该缺口部系呈弧形。
本实用新型的正压免针注射Y型接头装置具有以下的功效。通过该弹性密封构件与该Y型管的结构设计，当该无针注射器自该注射器接口拔出时，该弹性密封构件能快速地回弹回复至原本形状，并且由于该弹性密封构件的形变而使得该Y型管内的容积变小，而能产生正压的效果，藉此加强输液推向留置针的力量，令输液不会残留在留置针中，并使静脉血液不易回流，从而避免留置针发生堵塞的问题。
附图说明
图1为根据本实用新型的一实施例的正压免针注射Y型接头装置的正视图。
图2为根据本实用新型的该实施例的正压免针注射Y型接头装置的剖视图。
图3为根据本实用新型的该实施例的正压免针注射Y型接头装置于另一视角的剖视图。
图4为根据本实用新型的该实施例的正压免针注射Y型接头装置于注射插入时的示意图。
图5为根据本实用新型的该实施例的正压免针注射Y型接头装置于注射器拔出时的示意图。
图6为根据本实用新型的该实施例的正压免针注射Y型接头装置于使用时的示意图。
图7为根据本实用新型的另一实施例的弹性密封构件的示意图。
100           正压免针注射Y型接头装置
1             Y型管
11            输入管部
12            注射管部
121           管身件
122           盖体件
123           限位部
124           注射液入口
125           无针注射接口部
126           注射器接口
127           凸块
128           缩径内缘部
13            输出管部
2、2a         弹性密封构件
21            受压头
211           密合部
212、212a     缺口部
22            压动体
221           径向外缘部
23、23a       受压座
231           凹部
232           凸环部
300           管体
400           生物体
500           留置针
I             无针注射器
L             输液
P             流体通路
S             流动空间
S1            压缩空间
S2            中空空间
θ            夹角
具体实施方式
以下根据图1至图7，而说明本实用新型的实施方式。该说明并非为限制本实用新型的实施方式，而为本实用新型的实施例的一种。
如图1至图4所示，依据本实用新型的一实施例的正压免针注射Y型接头装置100，包含：Y型管1及弹性密封构件2。
该Y型管1具有互相连通的输入管部11、注射管部12及输出管部13。该Y型管1包括直管、以及倾斜地相连于该直管的倾斜管，该注射管部12与该输出管部13构成该直管，该输入管部11作为该倾斜管。该注射管部12包括相互套接的管身件121及盖体件122。该管身件121与该输入管部11及该输出管部13相连接。该管身件121具有限位部123。该限位部123于该管身件121的内壁面向该管身件121的环心(即该管身件121的中心)延伸而形成，并围出注射液入口124。该盖体件122具有无针注射接口部125，该无针注射接口部125位于该注射管部12的注射液入口124的对向侧，且该无针注射接口部125具有实质匹配无针注射器I(如图5)的注射器接口126。
该弹性密封构件2设置于该注射管部12之中。该弹性密封构件2依序相连地具有受压头21、压动体22及受压座23。该受压头21具有密合部211(如图4)，该密合部211实质密合该注射器接口126(如图2)。具体而言，该密合部211的直径略大于该注射器接口126。该受压头21的侧边形成有缺口部212。具体而言，该缺口部212为由该受压头21的单侧位置处内凹所形成的缺口。详细而言，在本实施例中，该缺口部212呈弧形，该弧形所形成的弧度使得该缺口部212易于弯折变形，而能进一步降低该无针注射器I插入该注射器接口1111所需的力道。当然，本实用新型不以该缺口部212呈弧形为限。如图7所示，弹性密封构件2a的缺口部212a大致上呈V形，以适用于其它使用状况。该压动体22的外表面与该管身件 121的内表面之间具有流动空间S。该受压座23形成为中空的半球结构。该受压座23具有凹部231而形成压缩空间S1。该凹部231设置于该限位部123而罩覆该注射液入口124，且在该受压座23与该限位部123的交界处形成有连通该流动空间S与该注射液入口124的流体通路P。在本实施例中，该受压座23的外径面径向凸出有复数个凸环部232，该复数个凸环部232用以增加该受压座23的弹性回复力，而能在该无针注射器I自该注射器接口126拔出时，使得该弹性密封构件2快速地回弹而恢复原本的形体。当然，本实用新型不以形成有该复数个凸环部232的该受压座23为限。如图7所示，弹性密封构件2a的受压座23a的外径面可呈平滑而无凸起，以便制造。
较佳地，该压动体22的内部形成有中空空间S2，该中空空间S2连通于该压缩空间S1。
如图2及图3所示，在本实施例中，该限位部123设置有两个以上相互间隔排列的凸块127，且该每两个相邻的凸块127之间形成该流体通路P。该受压座23承置于该复数个凸块127。该流体通路P及该流动空间S系通过该复数个凸块127而保持连通。当然，本实用新型并不以此为限。该流体通路P也可以是设置于该限位部123的通道。
于实际使用时，请参阅图4至图6所示，该正压免针注射Y型接头装置100为通过连接于管体300而连通于插置于生物体400的血管(例如手部静脉)中的留置针500。
如图4所示，当该无针注射器I自该注射器接口126插入时，该弹性密封构件2受该无针注射器I的挤压而使该受压头21的密合部211脱离该注射器接口126且该受压头的外表面与该注射管部的内表面之间形成有缺口空间，藉以使该注射器接口126通过该缺口空间、该流动空间S及该流体通路P而连通至该注射液入口124，有利于进行注射。此时，由于该弹性密封构件2受到该无针注射器I的挤压，该受压头21通过该缺口部212而弯折，且该压动体22及该受压座23产生变形而使该压缩空间S1及该中空空间S2缩小，而此时该流动空间S也因此变大。如图5所示，当该无针注射器I自该注射器接口126拔出时，该弹性密封构件2回弹而恢复原本的形体，使得该压缩空间S1及该中空空间S2恢复原本的大小，并使该流动空间S变小，而相对于受压时产生液体容积差，该液体容积差对该液体造成流向该注射液入口124的正压进而于该流动空间S产生正压，使该流动空间S中的输液L为受到正压推进而经由该注射液入口124进入该输出管部13至留置针3而注射入生物体3中。
在本实施例中，该无针注射接口部125的内环面凸伸形成有缩径内缘部128，且该压动体22具有对应于该缩径内缘部128的径向外缘部221，该缩径内缘部128的内径小于该径向外缘部221的外径，使该径向外缘部221受该缩径内缘部128的限位。当然，本实用新型并不以此为限。径向外缘部也可以设置于受压头，且缩径内缘部128为对应径向外缘部而设置，以将该弹性密封构件限位于该注射管部12之中。
如图2所示，依据本实用新型的该实施例的正压免针注射Y型接头装置100，该压动体22的外径于该注射器接口126朝向该注射液入口124的方向上为渐缩，以减小该弹性密封构 件2于受压时产生变形的阻力。
如图2所示，依据本实用新型的该实施例的正压免针注射Y型接头装置100，该压动体22与该受压座23的连接处形成有大于90度的夹角θ。
以上的叙述以及说明仅为本实用新型的较佳实施例的说明，对于本领域技术人员当可依据以下所界定申请专利范围以及上述的说明而作其他的修改，只要这些修改仍应是为本实用新型的实用新型精神而在本实用新型的权利范围中。

Claims (11)

  1. 一种正压免针注射Y型接头装置，其特征在于，包含：
    Y型管，具有互相连通的输入管部、注射管部及输出管部，所述的注射管部具有限位部及无针注射接口部，所述的限位部于所述的注射管部的内壁面向所述的注射管部的环心延伸而形成并围出注射液入口，所述的无针注射接口部位于所述的注射管部的注射液入口的对向侧并具有实质匹配无针注射器的注射器接口；以及
    弹性密封构件，设置于所述的注射管部之中，所述的弹性密封构件依序相连地具有受压头、压动体以及受压座，所述的受压头具有密合部，所述的密合部实质密合所述的注射器接口，所述的受压头的侧边形成有缺口部，所述的压动体的外表面与所述的注射管部的内表面之间具有一流动空间，所述的受压座具有凹部而形成压缩空间，所述的凹部设置于所述的限位部而罩覆所述的注射液入口，且在所述的受压座与所述的限位部的交界处形成有连通所述的流动空间与所述的注射液入口的流体通路，
    其中当所述的无针注射器自所述的注射器接口插入时，所述的弹性密封构件的受压头系经受压而通过所述的缺口部而弯折，并且通过所述的受压座的受压而向内缩入，使所述的受压头的密合部脱离所述的注射器接口且所述的受压头的外表面与所述的注射管部的内表面之间形成有一缺口空间，以使所述的注射器接口通过所述的缺口空间、所述的流动空间及所述的流体通路而连通至所述的注射液入口，
    当所述的无针注射器自所述的注射器接口拔除时，所述的弹性密封构件弹力回复至原本形体，而相对于受压时产生液体容积差，所述的液体容积差为对所述的液体造成流向所述的注射液入口的一正压。
  2. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的受压座形成为中空的半球结构。
  3. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的压动体的外径于所述的注射器接口朝向所述的注射液入口的方向上为渐缩。
  4. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的压动体与所述的受压座的连接处形成有一大于90度的夹角。
  5. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的压动体的内部形成有一中空空间，所述的中空空间连通于所述的压缩空间。
  6. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的无针注射接口部的内环面系凸伸形成有缩径内缘部，且所述的压动体具有对应于所述的缩径内缘部的径向外缘部，所述的缩径内缘部的内径小于所述的径向外缘部的外径，使所述的径向外缘部受 所述的缩径内缘部的限位。
  7. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的注射管部包括相互套接的盖体件及管身件，所述的管身件与所述的输出管部及所述的输入管部相连接，所述的无针注射接口部位于所述的盖体件，所述的限位部位于所述的管身件。
  8. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的缺口部为由所述的受压头的单侧位置处内凹所形成的缺口。
  9. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的Y型管包括直管及倾斜管，所述的倾斜管倾斜地相连于所述的直管，所述的注射管部与所述的输出管部构成所述的直管，所述的输入管部作为所述的倾斜管。
  10. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的受压座的外径面设置有径向凸出的复数个凸环部。
  11. 如权利要求1所述的正压免针注射Y型接头装置，其特征在于，所述的缺口部呈弧形。
PCT/CN2015/093819 2015-07-29 2015-11-05 正压免针注射y型接头装置 Ceased WO2017016092A1 (zh)

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