WO2017016094A1 - 正压免针注射精密输液套的上盖装置 - Google Patents

正压免针注射精密输液套的上盖装置 Download PDF

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Publication number
WO2017016094A1
WO2017016094A1 PCT/CN2015/093821 CN2015093821W WO2017016094A1 WO 2017016094 A1 WO2017016094 A1 WO 2017016094A1 CN 2015093821 W CN2015093821 W CN 2015093821W WO 2017016094 A1 WO2017016094 A1 WO 2017016094A1
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Prior art keywords
injection
needle
tube
upper cover
pressure
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PCT/CN2015/093821
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English (en)
French (fr)
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郭永斌
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佳承精工股份有限公司
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Publication of WO2017016094A1 publication Critical patent/WO2017016094A1/zh

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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 capping device for needle-free injection precision infusion sleeve, in particular to a capping device for positive pressure needle-free injection precision infusion sleeve.
  • Intravenous infusion is one of the main means of clinical treatment, and precision infusion sets are one of the commonly used tools for intravenous infusion.
  • the precision infusion set is mainly used to inject a special drip or drug into the blood of the human body, which can help control the amount of infusion of the drug into the human body. It is commonly used in clinical practice when it is necessary to strictly monitor the infusion volume of the patient, such as in emergency. Or severely ill patients, use of anesthetics, and use of antibiotics.
  • a precision infusion set includes a graduated cylinder and an upper cover, the upper cover being placed on top of the graduated cylinder.
  • the outer surface of the upper cover respectively protrudes upward with three tube portions, and the three tube portions are an air guiding tube, an infusion tube, and a medicated tube, respectively.
  • the medicated tube is used to connect a needleless syringe through which a medical professional injects a plurality of infusions or medicaments into the measuring cylinder.
  • a top cover device for positive pressure injection-free injection precision infusion sleeve comprising: an upper cover, respectively protruding upwardly with a medicated tube and an infusion on the outer surface a tube and an air guiding tube, wherein the medicated tube, the infusion tube, and the air guiding tube are respectively connected to the inner wall surface of the upper cover through the upper cover, wherein the medicated tube has a limiting portion and a needle-free injection
  • the interface portion is formed on the inner wall of the medicated tube of the medicated tube and extends toward the center of the medicated tube to enclose the inlet of the injection liquid, and the needle-free injection interface portion is the outer end of the medicated tube a syringe interface having a substantially matched needle-free injector; and an elastic sealing member disposed in the medicated tube, the elastic sealing member sequentially having a pressure receiving head, a pressing body, and a pressure seat, the receiving The indenter has
  • an upper cover device for a positive pressure needle-free injection precision infusion set is provided, and the pressure receiving seat is formed as a hollow hemispherical structure.
  • a capping device for a positive pressure needle-free injection precision infusion set for a positive pressure needle-free injection precision infusion set, the outer diameter of the pressing body being tapered in a direction in which the syringe interface faces the inlet of the injecting solution.
  • an upper cover device for a positive pressure needle-free injection precision infusion set is provided, and an intersection of the pressure body and the pressure seat forms an angle greater than 90 degrees.
  • an upper cover device for a positive pressure needle-free injection precision infusion set is provided, and a hollow space is formed inside the pressure body, and the hollow space is connected to the compression space.
  • an upper cover device for a positive pressure needle-free injection precision infusion set wherein an inner annular surface of the needle-free injection interface portion is formed with a reduced diameter inner edge portion, and the pressing The body has a radially outer edge portion corresponding to the inner diameter portion of the reduced diameter, and an outer diameter of the radially outer edge portion is larger than an inner diameter of the inner diameter portion of the reduced diameter, so that the radially outer edge portion receives the inner diameter portion of the reduced diameter Limits.
  • a capping device for a positive pressure needle-free injection precision infusion set comprising a cap body member and a body member that are sleeved with each other, the needle-free injection interface portion is located
  • the cover member is located at the body member.
  • an upper cover device for a positive pressure needle-free injection precision infusion set wherein the notch portion is a notch formed by a concave at a single side position of the pressure receiving head.
  • an upper cover device for a positive pressure needle-free injection precision infusion set is provided, and the infusion tube is located between the medicated tube and the air guide tube.
  • an upper cover device for positive pressure needle-free injection precision infusion sleeve is provided, and the outer diameter surface of the pressure receiving seat is provided with a plurality of convex ring portions protruding radially.
  • an upper cover device for a positive pressure needle-free injection precision infusion set is provided, and the notch portion has an arc shape.
  • the elastic sealing member when the injection completes the needle-free injector, the elastic sealing member can rebound The force returns to the original shape and generates a positive pressure, which causes the liquid in the filling tube to continue to advance in the inlet of the previous injection to avoid liquid residue and blood return.
  • the elastic sealing member of the utility model has a simple structure, thereby improving the economic cost.
  • FIG. 1 is a plan view of an upper cover device for a positive pressure needle-free injection precision infusion set according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a capping device for a positive pressure needle-free injection precision infusion set, in accordance with an embodiment of the present invention.
  • FIG 3 is a schematic view of a top cover device for a positive pressure needle-free injection precision infusion set in use, in accordance with an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a limit portion of a capping device for a positive pressure needle-free injection precision infusion set, in accordance with an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of the upper cover device of the positive pressure needle-free injection precision infusion set in use, in accordance with an embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of the upper cover device of the positive pressure needle-free injection precision infusion set in use, in accordance with an 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.
  • the upper cover device 100 for positive pressure needle-free injection precision infusion sleeve includes an upper cover 1 and an elastic sealing member 2.
  • the upper cover 1 protrudes upwardly from the outer surface O with a medicinal tube 11, an infusion tube 12, and an air guiding tube 13, and the medicated tube 11, the infusion tube 12, and the air guiding tube respectively penetrate through the upper portion
  • the cover 1 is connected to the inner wall surface A of the upper cover 1.
  • the infusion tube 12 is located between the medicated tube 11 and the air guiding tube 13.
  • the upper cover device 100 of the positive pressure needle-free injection precision infusion set is placed on the measuring cylinder C, and the filling tube 11 has a needle-free injection interface portion 111 for connecting the needle-free injector.
  • the infusion tube 12 is used to connect the infusion set B.
  • the medicated tube 11 includes a body member 112 and a cover member 113 that are sleeved to each other.
  • the body member 112 includes a limiting portion 114 and a supporting portion 115 .
  • the limiting portion 114 and the supporting portion 115 are in the feeding tube of the tubular member 112 of the filling tube 11 .
  • the wall surface 116 extends toward the center of the body member 112 of the medicated tube 11 to enclose the injection inlet 117.
  • the number of the limiting portions 114 is three, and are respectively disposed on the supporting portion 115 at equal intervals.
  • the present invention is not limited thereto. In other embodiments, the number of the limit portions 114 may vary.
  • the needle-free injection interface portion 111 is provided to the cover member 113.
  • the needle-free injection interface portion 111 has an outer end portion of the cover member 113 of the medicated tube 11 and has a syringe interface 1111 substantially matching the needle-free injector I. Further, the inner annular surface of the needle-free injection interface portion 111 The protrusion has a reduced diameter inner edge portion 1112.
  • the elastic sealing member 2 is disposed in the medicinal tube 11, and 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 receiving head 21 has an adhesion portion 211 and a notch portion 212.
  • the adhesion portion 211 substantially closes the syringe interface 1111.
  • the diameter of the adhesion portion 211 is slightly larger than the syringe interface 1111.
  • 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 power needed 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 pressing body 22 has a radially outer edge portion 221 corresponding to the reduced diameter inner edge portion 1112 and a hollow space S1 formed therein.
  • the outer diameter d1 of the radially outer edge portion 221 is larger than the inner diameter d2 of the reduced diameter inner edge portion 1112, so that the radially outer edge portion 221 is limited by the reduced diameter inner edge portion 1112.
  • the pressure body 22 and the outer surface of the pressure receiving seat 23 and the inner surface of the medicinal tube 11 have a flow space S2.
  • the pressure receiving seat 23 is formed as a hollow hemispherical structure, and has a concave portion 231 and a plurality of convex ring portions 232.
  • the recessed portion 231 is formed with a compression space S3 that communicates with the hollow space S1, and is disposed at the limiting portion 114 to cover the injection liquid inlet 117, and at the boundary between the pressure receiving seat 23 and the limiting portion 114.
  • a fluid passage P communicating with the flow space S2 and the inlet 117 of the injection liquid is formed.
  • the plurality of convex ring portions 232 are disposed on the outer diameter surface of the pressure receiving seat 23, and the plurality of convex ring portions 232 are radially protruded from the outer diameter surface of the pressure receiving seat 23 for increasing the pressure receiving seat 23
  • the elastic restoring force enables the elastic sealing member 2 to rebound quickly to restore the original shape when the needle-free injector 1 is pulled out from the syringe interface 1111.
  • the present invention is not limited to the formation of the plurality of convex ring portions 232 on the outer diameter surface of the pressure receiving seat 23.
  • the outer diameter surface of the pressure receiving seat 23a of the elastic sealing member 2a can be smooth without projections, thereby facilitating manufacture to simplify the process.
  • the outer diameter of the pressing body 22 is directed toward the injection liquid inlet 117 at the syringe interface 1111.
  • the direction is tapered, and the junction of the pressing body 22 and the pressure receiving seat 23 forms an angle ⁇ greater than 90 degrees.
  • the pressure receiving head 21 of the elastic sealing member 2 is pressed and bent through the notch portion 212, and passes through the pressure receiving seat 23
  • the pressure is inwardly retracted, and the adhesion portion 211 of the pressure receiving head 21 is separated from the syringe interface 1111 to form an injection external inlet 118, and the outer surface of the pressure receiving head 21 and the medicated tube 11 are
  • a notch space S4 is formed between the inner surfaces, and the injection outer inlet 118, the notch space S4, the flow space S2, the fluid passage P, and the injection inlet 117 communicate with each other to make the needle-free injector I
  • a liquid L flows through the injection outer inlet 118, the notch space S4, the flow space S2, and the fluid passage P to the injection liquid inlet 117.

Abstract

一种正压免针注射精密输液套的上盖装置（100），包括上盖（1）及弹性密封构件（2），上盖（1）向上凸伸有加药管（11）、输液管（12）、及导气管（13），加药管（11）具有无针注射接口部（111），无针注射接口部（111）的外端具有匹配无针注射器（I）的注射器接口（1111），弹性密封构件（2）具有受压头（21）、压动体（22）、及受压座（23），受压头（21）具有密合注射器接口（1111）的密合部（211），当结束注射使无针注射器（I）自注射器接口（1111）拔除时，弹性密封构件（2）因受压而发生形变的形体弹力回复至原本形体，而相对于受压时产生液体容积差，液体容积差对液体造成流向注射液内入口（117）的一正压。

Description

正压免针注射精密输液套的上盖装置
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201520558134.5，名称为“正压免针注射精密输液套的上盖装置”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免针注射精密输液套的上盖装置，特别涉及一种正压免针注射精密输液套的上盖装置。
背景技术
静脉输液作为临床治疗的主要手段之一，而精密输液套则是常用来进行静脉输液的工具之一。精密输液套主要用于将特殊点滴或药物输注入至人体的血液，其可帮助控制药物进入人体的输注量，在临床上常用在需要严格监控病患的输液量的时候，例如急救中或重症的病患、麻醉药使用、以及抗生素使用等。一般而言，精密输液套包括量筒及上盖，上盖盖置于量筒的顶部。上盖的外表面分别向上凸伸有三个管部，三个管部分别是导气管、输液管、及加药管。该加药管用以连接无针注射器，医护人员通过该无针注射器而将多种输液或药剂注射至该量筒内。
为了避免注射时加药管因药液残留而导致发生堵管情形，近年来发展出利用正压接头与加药管相连接，通过该正压接头提供正压，使药液比较不会残留在加药管中。
然而，已知的正压接头结构复杂，于经济成本考虑上实为待需解决的问题。
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精密输液套的上盖装置，以简化其结构。
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精密输液套的上盖装置，包括：上盖，于外表面分别向上凸伸有加药管、输液管、及导气管，且该加药管、该输液管、及该导气管系分别贯穿该上盖而连通至该上盖的内壁面，其中，该加药管具有限位部及无针注射接口部，该限位部于该加药管的加药管内壁面向该加药管的环心延伸而形成并围出注射液内入口，该无针注射接口部为该加药管的外端部分而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，设置于该加药管之中，该弹性密封构件依序相连地具有受压头、压动体、及受压座，该受压头具有密合部，该密合部实质密合该注射器接口，该受压头的侧边形成有缺口部，该压动体及该受压座的外表面与该加药管的内表面之间具有 一流动空间，该受压座具有一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内入口，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内入口的一流体通路，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而呈一压缩形体，使该受压头的密合部脱离该注射器接口而形成有注射液外入口，且该受压头的外表面与该加药管的内表面之间形成有一缺口空间，该注射液外入口、该缺口空间、该流动空间、该流体通路、以及该注射液内入口相互连通，以使该无针注射器中的液体通过该注射液外入口、该缺口空间、该流动空间、以及该流体通路而流至该注射液内入口，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一液体容积差，该液体容积差系对该液体造成流向该注射液内入口的一正压。
在本实用新型的一实施例中提供一种正压免针注射精密输液套的上盖装置，该受压座形成为一中空的半球结构。
在本实用新型的一实施例中提供一种正压免针注射精密输液套的上盖装置，该压动体的外径于该注射器接口朝向该注射液内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精密输液套的上盖装置，该压动体与该受压座的连接处形成有一大于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精密输液套的上盖装置，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精密输液套的上盖装置，该无针注射接口部的内环面系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，该径向外缘部的外径大于该缩径内缘部的内径，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系提供一种正压免针注射精密输液套的上盖装置，该加药管包括相互套接的盖体件及管身件，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系提供一种正压免针注射精密输液套的上盖装置，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系提供一种正压免针注射精密输液套的上盖装置，该输液管位于该加药管与该导气管之间。
在本实用新型的一实施例中提供一种正压免针注射精密输液套的上盖装置，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精密输液套的上盖装置，该缺口部呈弧形。
经由本实用新型所采用的技术手段，当注射完成拔出无针注射器时，弹性密封构件能弹 力回复至原本形体并产生一正压，该正压使得加药管内的液体得以往注射液内入口继续前进，避免液体残留以及回血的情况。且本实用新型的弹性密封构件结构简单，进而提高经济成本的效益。
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精密输液套的上盖装置的平面图。
图2为根据本实用新型的实施例的正压免针注射精密输液套的上盖装置的剖视图。
图3为根据本实用新型的实施例的正压免针注射精密输液套的上盖装置于使用时的示意图。
图4为根据本实用新型的实施例的正压免针注射精密输液套的上盖装置的限位部的剖视图。
图5为根据本实用新型的实施例的正压免针注射精密输液套的上盖装置于使用时的剖视图。
图6为根据本实用新型的实施例的正压免针注射精密输液套的上盖装置于使用时的剖视图。
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。
附图标记：
100        正压免针注射精密输液套的上盖装置
1          上盖
11         加药管
111        无针注射接口部
1111       注射器接口
1112       缩径内缘部
112        管身件
113        盖体件
114        限位部
115        支承部
116        加药管内壁面
117        注射液内入口
118        注射液外入口
12         输液管
13         导气管
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
A          内壁面
B          输液套
C          量桶
d1         外径
d2         内径
I          无针注射器
L          液体
O          外表面
P          流体通路
S1         中空空间
S2         流动空间
S3         压缩空间
S4         缺口空间
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1-3所示，依据本实用新型的一实施例的正压免针注射精密输液套的上盖装置100，包括上盖1及弹性密封构件2。
详细而言，上盖1于外表面O分别向上凸伸有加药管11、输液管12、及导气管13，且该加药管11、该输液管12、及该导气管分别贯穿该上盖1而连通至该上盖1的内壁面A。在本实施例中，该输液管12位于该加药管11与该导气管13之间。
如图3所示，在本实施例中，正压免针注射精密输液套的上盖装置100盖置于量筒C，该加药管11具有无针注射接口部111用以供连接无针注射器I，该输液管12用以供连接输液套B。
如图1、2所示，该加药管11包括相互套接的管身件112及盖体件113。
请同时搭配图2、4所示，该管身件112包括限位部114及支承部115，该限位部114与该支承部115于该加药管11的管身件112的加药管内壁面116向该加药管11的管身件112的环心延伸而围出注射液内入口117。在本实施例中，该限位部114的数量为三个，且彼此以相等间距分别地设置于该支承部115上。当然，本实用新型不以此为限。在其它实施例中，该限位部114的数量可有所不同。
如图2、4所示，该无针注射接口部111设置于该盖体件113。该无针注射接口部111为该加药管11的盖体件113的外端部分而具有实质匹配该无针注射器I的一注射器接口1111，此外，该无针注射接口部111的内环面凸伸形成有缩径内缘部1112。
如图2所示，该弹性密封构件2设置于该加药管11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及缺口部212，该密合部211实质密合该注射器接口1111，具体而言，该密合部211的直径略大于该注射器接口1111。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。
详细而言，该压动体22具有对应于该缩径内缘部1112的径向外缘部221以及其内部形成有中空空间S1。该径向外缘部221的外径d1大于该缩径内缘部1112的内径d2，使该径向外缘部221受该缩径内缘部1112的限位。该压动体22以及该受压座23的外表面与该加药管11的内表面之间具有一流动空间S2。该受压座23形成为一中空的半球结构，具有凹部231及复数个凸环部232。该凹部231形成有连通于该中空空间S1的一压缩空间S3，并设置于该限位部114而罩覆该注射液内入口117，且在该受压座23与该限位部114的交界处形成有连通该流动空间S2与该注射液内入口117的一流体通路P。该复数个凸环部232设置在该受压座23的外径面，该复数个凸环部232系自该受压座23的外径面径向凸出，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1111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，本实用新型不以该受压座23的外径面形成有该复数个凸环部232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，藉此便于制造以简化制程。较佳地，在本实施例中，为了使该弹性密封构件2易于往该缺口部212方向弯折，该压动体22的外径于该注射器接口1111朝向该注射液内入口117 的方向上为渐缩，且该压动体22与该受压座23的连接处形成有一大于90度的夹角θ。
如图5所示，当该无针注射器I自该注射器接口1111插入时，该弹性密封构件2的受压头21经受压而通过该缺口部212而弯折，并且通过该受压座23的受压而向内缩入，使该受压头21的密合部211脱离该注射器接口1111而形成有一注射液外入口118，且该受压头21的外表面与该加药管11的内表面之间形成有一缺口空间S4，该注射液外入口118、该缺口空间S4、该流动空间S2、该流体通路P、以及该注射液内入口117相互连通，以使该无针注射器I中的一液体L通过该注射液外入口118、该缺口空间S4、该流动空间S2、以及该流体通路P而流至该注射液内入口117。
如图6所示，当该无针注射器I自该注射器接口1111拔除时，该弹性密封构件2弹力回复至原本形体，而相对于受压时产生一液体容积差，该液体容积差对该液体L造成流向该注射液内入口117的一正压。
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. 一种正压免针注射精密输液套的上盖装置，其特征在于，包含：
    上盖，于外表面分别向上凸伸有加药管、输液管、及导气管，且所述的加药管、所述的输液管、及所述的导气管分别贯穿所述的上盖而连通至所述的上盖的内壁面，其中，所述的加药管具有限位部及无针注射接口部，所述的限位部于所述的加药管的内壁面向所述的加药管的环心延伸而形成并围出注射液内入口，所述的无针注射接口部为所述的加药管的外端部分而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，设置于所述的加药管之中，所述的弹性密封构件依序相连地具有受压头、压动体、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，所述的压动体及所述的受压座的外表面与所述的加药管的内表面之间具有一流动空间，所述的受压座具有一凹部而形成一压缩空间，所述的凹部设置于所述的限位部而罩覆所述的注射液内入口，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内入口的一流体通路，
    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而呈压缩形体，使所述的受压头的密合部脱离所述的注射器接口而形成有一注射液外入口，且所述的受压头的外表面与所述的加药管的内表面之间形成有一缺口空间，所述的注射液外入口、所述的缺口空间、所述的流动空间、所述的流体通路、以及所述的注射液内入口相互连通，以使所述的无针注射器中的液体通过所述的注射液外入口、所述的缺口空间、所述的流动空间、以及所述的流体通路而流至所述的注射液内入口，
    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一液体容积差，所述的液体容积差系对所述的液体造成流向所述的注射液内入口的一正压。
  2. 如权利要求1所述的正压免针注射精密输液套的上盖装置，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精密输液套的上盖装置，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内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精密输液套的上盖装置，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精密输液套的上盖装置，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精密输液套的上盖装置，其特征在于，所述的无针注射接口部的内环面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，所述的径向外缘部的外径大于所述的缩径内缘部的内径，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精密输液套的上盖装置，其特征在于，所述的加药管包括相互套接的盖体件及管身件，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精密输液套的上盖装置，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精密输液套的上盖装置，其特征在于，所述的输液管位于所述的加药管与所述的导气管之间。
  10. 如权利要求1所述的正压免针注射精密输液套的上盖装置，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精密输液套的上盖装置，其特征在于，所述的缺口部呈弧形。
PCT/CN2015/093821 2015-07-29 2015-11-05 正压免针注射精密输液套的上盖装置 WO2017016094A1 (zh)

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