WO2013082882A1 - 一种一次性静脉输液器复合双向负压传导自截止装置 - Google Patents

一种一次性静脉输液器复合双向负压传导自截止装置 Download PDF

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WO2013082882A1
WO2013082882A1 PCT/CN2012/071043 CN2012071043W WO2013082882A1 WO 2013082882 A1 WO2013082882 A1 WO 2013082882A1 CN 2012071043 W CN2012071043 W CN 2012071043W WO 2013082882 A1 WO2013082882 A1 WO 2013082882A1
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negative pressure
liquid chamber
valve body
liquid
tube
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PCT/CN2012/071043
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English (en)
French (fr)
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朱盛楠
张雅男
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郑州昊能科技有限公司
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Publication of WO2013082882A1 publication Critical patent/WO2013082882A1/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
    • A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • 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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16804—Flow controllers
    • A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
    • 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
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A61M5/16881—Regulating valves
    • 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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A61M2039/242—Check- or non-return valves designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid

Definitions

  • the invention relates to an automatic cut-off device for a disposable intravenous infusion device, in particular to an automatic cut-off device capable of automatically cutting off, preventing blood return, simultaneously generating and utilizing negative pressure conduction.
  • the disposable infusion set used now is relatively simple. Because there is no self-cutting function, during the intravenous infusion process, when the liquid in the infusion set is nearly empty, if the infusion is not stopped or the liquid is changed in time, the lower infusion tube will be caused. Gas, blood return, coagulation phenomenon, causing obstacles to continue infusion, adding extra pain to patients, and easily forming thrombosis, causing potential harm to patients; existing disposable infusion sets are not set according to the three-way pressure detection port, can not be based on infusion
  • the pressure change information in the infusion tube is monitored and managed in real time, which consumes a lot of hidden labor of the medical staff, and cannot accurately grasp the time of changing the liquid or stopping the infusion. It cannot guarantee that these tasks can be processed in time, affecting the medical staff. Service quality and work efficiency, addressing these problems in intravenous infusion is currently a top priority.
  • the cut-off device is characterized in that it is installed between the lower liquid outlet 1-1-1 of the intravenous infusion device Mohd tube 1-1 and the lower infusion catheter 1-4; it is composed of a bidirectional negative pressure check valve 1-2 , the check valve cover 1-3, the Mofei's tube 1-1 combination, the two-way negative pressure check valve 1-2 on the Mofe's tube connection end 1-2-1 and the bottom end of the Mofei's tube 1-1
  • the valve body mounting hole 1-1-3 is connected, and the check valve shield 1-3 is installed outside the two-way negative pressure check valve 1-2, and the Mohs tube seal mounting port 1-3-1 and the shield mounting table 1 -1-2 connection, the valve body sealing installation port 1-3-2 and the bidirectional negative pressure check valve 1-2 are connected through the valve body cover mounting table 1-2-10; the lower infusion tube connection end 1-2- 11 is connected to the lower infusion catheter 1-4.
  • the disposable intravenous infusion device composite bidirectional negative pressure conduction self-closing device 1 has a bidirectional negative pressure check valve 1-2 from a Mohd tube connection end 1-2-1, and a valve body inlet port 1-2-2 , the upper liquid chamber 1-2-3, the upper liquid chamber liquid outlet 1-2-4, the upper and lower liquid chamber partition 1-2-5, the lower liquid chamber 1-2-6, the lower liquid chamber liquid import 1-2 -7, valve body outlet port 1-2-8, upper and lower annular sealing groove 1-2-9, valve body elastic sealing diversion sleeve 1-2-12, upper and lower diversion sleeve sealing ring 1-2 -13, valve body cover mounting table 1-2-10, lower infusion tube connection end 1-2-11; upper and lower liquid chamber partition 1-2-5 located in upper liquid chamber 1-2-3 and lower liquid chamber 1 Between -2-6, the upper liquid chamber 1-2-3 and the lower liquid chamber 1-2-6 are separated into two separate liquid chambers, and the upper liquid chamber chemical liquid outlet 1-2-4 is located in the upper liquid chamber.
  • the liquid inlet 1-2-7 of the lower liquid chamber is located on the side wall of the lower liquid chamber 1-2-6; the upper and lower annular seal grooves 1-2-9 are located in the upper liquid chamber liquid medicine Outlet 1-2-4 and the lower liquid chamber liquid inlet 1-2-7 outside; valve body elastic sealing diversion sleeve 1-2-12 set on the outside of the two-way negative pressure check valve 1-2, upper and lower guide Flow sleeve sealing ring 1-2-13, the valve body elastic sealing guide sleeve 1-2-12 is tightly bounded on the upper and lower rings In the sealing groove 1-2-9, a closed structure is formed, and the upper liquid medicine liquid outlet 1-2-4 and the lower liquid medicine liquid inlet 1-2-7 are located in the sealing area.
  • the disposable intravenous infusion device composite bidirectional negative pressure conduction self-cutting device 1 has a muffler tube sealing mounting port 1-3-1 and a negative pressure conducting three-way port 1-3 on the stop valve protective cover 1-3 -3 and the valve body sealing mounting port 1-3-2, the negative pressure conducting three-way port 1-3-3 and the check valve protective cover 1-3 form a three-way structure, and at the same time constitute a negative pressure chamber, which is elastically sealed by the valve body
  • the expansion and contraction of the guide sleeve 1-2-12 generates positive and negative air pressure, which is led out through the negative pressure conduction three-port 1-3-3, and drives the supporting system to work; the check valve shield 1-3 is bidirectional
  • the negative pressure check valve 1-2 serves as a protection.
  • the invention has the beneficial effects that the infusion set can be automatically cut off after the infusion is completed, and the positive and negative air pressures are derived through the conduction three-port, the supporting system is driven to monitor and manage the infusion.
  • the utility model has small changes to the structure of the original infusion set, low cost, easy realization of industrial production, and does not change the working habits of the medical staff, and is convenient for promotion and application, effectively improving the work efficiency of the nurse and reducing the suffering of the patient.
  • FIG. 2 is a schematic cross-sectional view of a bidirectional negative pressure automatic stop valve body according to the present invention
  • Figure 3 is a schematic cross-sectional view of the lower part of the Mofei's tube
  • Figure 4 is a cross-sectional view of the flow valve body shield.
  • 1-1 is a Mohs tube
  • 1-2 is a bidirectional negative pressure automatic stop valve
  • 1-3 is a check valve cover
  • 1-4 It is the lower infusion tube.
  • the two-way negative pressure check valve 1-2 is combined with the check valve shield 1-3, the lower end portion of the Mohd tube 1-1, and the lower infusion tube 1-4 to form a bidirectional composite negative pressure conduction self-closing device 1.
  • the liquid medicine flows from the lower liquid outlet 1-1-1 of the Mofei's tube 1-1, flows into the valve body inlet port 1-2-2, and enters the upper liquid chamber 1-2-3.
  • the chamber liquid medicine outlet 1-2-4 flows out, enters the valve body elastic sealing diversion sleeve 1-2-12, the liquid medicine is in the diversion sleeve 1-2-12, and the liquid medicine inlet 1-2- from the lower liquid chamber 7. Flow into the lower liquid chamber 1-2-6, and then flow into the lower infusion tube 1-4 from the valve body liquid outlet 1-2-8, and the liquid medicine flows out from the composite bidirectional negative pressure conduction self-closing device.
  • the liquid medicine flows from the Mofei's tube into the upper liquid chamber 1-2-3 of the two-way stop valve 1-2 under gravity, and then flows out from the upper liquid chamber liquid outlet 1-2-4.
  • the pressure of the liquid in the Mofe's tube 1-1 and the upper liquid chamber 1-2-3 is reduced, and the valve body elastically seals the liquid in the diversion sleeve 1-2-12. Under the combined action of the contraction force and the suction force in the lower infusion catheter, the shrinkage sealing and sealing of the liquid chamber liquid inlet 1-2-7, to achieve the cut-off function.
  • the liquid enters the valve body elastic sealing diversion sleeve 1-2-12 under pressure, expands in the check valve shield 1-3, and conducts the air in the hood from the negative pressure conduction tee.
  • Extrusion of port 1-3-3 produces air pressure higher than normal pressure; when the liquid medicine is finished, the pressure in the upper liquid chamber 1-2-3 is reduced, and the valve body elastically seals the diversion sleeve 1-2-12 Under the combined action of the elastic force and the suction of the lower infusion catheter 1-4, the volume contraction in the stop valve guard 1-3 is reduced, and the air flows from the negative pressure conduction three-port 1-3-3 into the check valve cover 1 Within -3, a negative pressure lower than normal pressure is formed.
  • the invention can be made from metal and non-metallic materials, sandblasted or injection molded.
  • the valve body can be cylindrical, and the cylindrical arc surface where the liquid outlet is located should be smooth and regular, and there should be no concave and convex grooves to avoid affecting the sealing effect.
  • the elastic sealing diversion sleeve should be made of elastic latex material.
  • the inner diameter is slightly smaller than the diameter of the valve body to ensure the sealing effect can be achieved without pressure. When there is liquid pressure, the liquid in the upper liquid chamber can be easily Enter the elastic sealing diversion sleeve and the lower liquid chamber to achieve normal infusion.
  • the invention has novel structure, strong practicability, safety and reliability, can effectively reduce the labor intensity of the medical staff, and does not change the structure of the Mofei's tube, has high manufacturability, low manufacturing cost, and is easily accepted by the infusion set manufacturer and the market.

Abstract

一种一次性静脉输液器的自动截止装置（1），安装在莫非式管（1-1）下出液口（1-1-1）与下输液导管（1-4）之间，其由双向负压止流阀（1-2）、止流阀防护罩（1-3）、莫非式管（1-1）组合而成。所述装置（1）在输液完毕时，自动截止，同时产生并传导出压力变化信息，通过止流阀防护罩（1-3）上的负压传导三通口（1-3-3），为外部声光告警预留接口并输出信息。本装置对原输液器结构改动小，成本低，易于提高护士工作效率。

Description

一种一次性静脉输液器复合双向负压传导自截止装置
技术领域
本发明涉及一种一次性静脉输液器的自动截止装置，特别是一种能够自动截止、防止回血、同时产生和利用负压传导的自动截止装置。
背景技术
现在使用的一次性输液器构造较为简单，因没有自截止功能，静脉输液过程中，当输液器内的药液接近排空时，如果不及时停止输液或者更换药液，会造成下输液管进气、回血、凝血现象，给继续输液造成障碍，给患者增加额外的痛苦，还容易形成血栓，给病人带来潜在危害；现有一次性输液器因没有设置三通压力检测口，无法根据输液时输液管内的压力变化信息，进行实时监控管理，耗费了医护人员大量的隐性劳动，不能准确的把握更换药液或停止输液的时间，不能保证这些工作能够得到及时处理，影响了医护人员的服务质量和工作效率，解决静脉输液中存在的这些问题是目前的当务之急。
发明内容
本发明的目的在于提供一种克服现有技术存在的缺点和不足，实现输液完毕自动截止，并通过三通压力接口提供负压传导功能的装置。
为了达到上述目的，本发明的技术方案是这样实现的：一种一次性静脉输液器复合双向负压传导自截止装置1，特别是能够自动截止、防止回血、同时产生和利用负压传导的自动截止装置，其特征是：其安装在静脉输液器莫非氏管1-1的下出液口1-1-1与下输液导管1-4之间；其由双向负压止流阀1-2、止流阀防护罩1-3、莫非氏管1-1组合而成，双向负压止流阀1-2上的莫非氏管连接端1-2-1与莫非氏管1-1下端的阀体安装孔1-1-3连接，止流阀防护罩1-3安装在双向负压止流阀1-2外部，其莫非氏管密封安装口1-3-1与防护罩安装台1-1-2连接，其阀体密封安装口1-3-2与双向负压止流阀1-2通过阀体防护罩安装台1-2-10连接；下输液管连接端1-2-11与下输液导管1-4安装连接。
所述的一次性静脉输液器复合双向负压传导自截止装置1，其双向负压止流阀1-2由莫非氏管连接端1-2-1，阀体进液口1-2-2，上液室1-2-3，上液室药液出口1-2-4，上下液室隔断1-2-5，下液室1-2-6，下液室药液进口1-2-7，阀体出液口1-2-8，上、下环形密封槽1-2-9，阀体弹性密封导流套1-2-12，上、下导流套密封环1-2-13，阀体防护罩安装台1-2-10，下输液管连接端1-2-11构成；上下液室隔断1-2-5位于上液室1-2-3和下液室1-2-6之间，将上液室1-2-3和下液室1-2-6隔开成两个独立的液室，上液室药液出口1-2-4位于上液室1-2-3侧壁上，下液室药液进口1-2-7位于下液室1-2-6侧壁上；上、下环形密封槽1-2-9位于上液室药液出口1-2-4和下液室药液进口1-2-7外侧；阀体弹性密封导流套1-2-12套在双向负压止流阀1-2的外部，上、下导流套密封环1-2-13，将阀体弹性密封导流套1-2-12抱紧限位于上、下环形密封槽1-2-9内，形成密闭结构，上液室药液出口1-2-4和下液室药液进口1-2-7位于密封区域内。
所述的一次性静脉输液器复合双向负压传导自截止装置1，其止流阀防护罩1-3上有莫非氏管密封安装口1-3-1、负压传导三通口1-3-3和阀体密封安装口1-3-2，负压传导三通口1-3-3与止流阀防护罩1-3构成三通结构，同时构成负压腔，利用阀体弹性密封导流套1-2-12在其内部的膨胀和收缩产生空气正负压力，通过负压传导三通口1-3-3导出，驱动配套系统工作；止流阀防护罩1-3对双向负压止流阀1-2起保护作用。
本发明的有益效果是：能够实现输液器输液完毕自动截止，同时通过传导三通口导出空气正负压力，驱动配套系统工作，对输液进行监护和管理。本实用型对原输液器结构改动小，成本低，容易实现工业化生产，而且不改变医护人员工作习惯，便于推广和应用，有效提高护士工作效率，减少病人痛苦。
附图说明
图1为本发明结构示意图，也可作为摘要附图；
图2为本发明的双向负压自动止流阀体剖面示意图；
图3为莫非氏管下部剖面示意图；
图4为止流阀体防护罩剖面图。
其中：
1、复合双向负压传导截止装置
1-1莫非氏管
1-1-1下出液口
1-1-2防护罩安装台
1-1-3阀体安装孔
1-2、双向负压止流阀
1-2-1莫非氏管连接端
1-2-2阀体进液口
1-2-3上液室
1-2-4上液室药液出口
1-2-5上下液室隔断
1-2-6下液室
1-2-7下液室药液进口
1-2-8阀体出液口
1-2-9环形密封槽
1-2-10阀体防护罩安装台
1-2-11下输液管连接端
1-2-12阀体弹性密封导流套
1-2-13导流套密封环
1-3、止流阀防护罩
1-3-1莫非氏管密封安装口
1-3-2阀体密封安装口
1-3-3负压传导三通口
1-4、下输液导管
具体实施方式
下面结合结构示意附图对本发明作具体说明，在图1中：1-1是莫非氏管，1-2是双向负压自动止流阀，1-3是止流阀防护罩，1-4是下输液管。双向负压止流阀1-2与止流阀防护罩1-3、莫非氏管1-1的下端部，下输液管1-4组合连接，构成双向复合负压传导自截止装置1。在输液过程中，药液自莫非氏管1-1的下出液口1-1-1，流入阀体进液口1-2-2，进入上液室1-2-3，从上液室药液出口1-2-4流出，进入阀体弹性密封导流套1-2-12内，药液在导流套1-2-12内，自下液室药液进口1-2-7，流入下液室1-2-6，再从阀体出液口1-2-8流入下输液管1-4，至此药液从复合双向负压传导自截止装置流出。
在输液过程中，药液在重力作用下，从莫非氏管流入双向止流阀1-2的上液室1-2-3内，再从上液室药液出口1-2-4流出，进入阀体弹性密封导流套1-2-12，在压力作用下，从下液室药液进口1-2-7流入下液室1-2-6内，再流入下输液导管1-4。当输液瓶内的药液输完时，莫非氏管1-1及上液室1-2-3内的药液压力减小，阀体弹性密封导流套1-2-12内的药液在其收缩力和下输液导管内的吸力共同作用下，收缩密闭封堵下液室药液进口1-2-7，实现截止功能。
在输液过程中，药液在压力作用下，进入阀体弹性密封导流套1-2-12内，在止流阀防护罩1-3内膨胀，将罩内的空气从负压传导三通口1-3-3挤出，产生高于常压的空气压力；当药液输完时，上液室1-2-3内压力减小，阀体弹性密封导流套1-2-12在弹力和下输液导管1-4吸力共同作用下，在止流阀防护罩1-3内体积收缩减小，空气又从负压传导三通口1-3-3流入止流阀防护罩1-3内，形成低于常压的负压。利用输液过程中的空气压力变化，与相关系统连接，可以掌握输液进程，实现对输液的监护管理。
本发明可以采用金属和非金属材料，翻砂或注塑制造。阀体可采用圆柱形，出液口所在的圆柱弧面要光滑规则，不能有凸凹沟槽，以免影响密闭效果。弹性密封导流套，应采用弹性好的乳胶材料制造，内径略小于阀体直径，确保在无压力状态下即可达到密封效果；当有药液压力时，上液室的药液可以轻易的进入弹性密封导流套和下液室实现正常输液。
本发明构造新颖、实用性强、安全可靠，可有效减轻医务人员劳动强度，并且不改变莫非氏管的结构，可制造性强，制造成本低，容易被输液器制造商和市场接受。

Claims (3)

  1. 一种一次性静脉输液器复合双向负压传导自截止装置（1），其特征是：其安装在静脉输液器莫非氏管（1-1）的下出液口（1-1-1）与下输液导管（1-4）之间；其由双向负压止流阀（1-2）、止流阀防护罩（1-3）、莫非氏管（1-1）组合而成，双向负压止流阀（1-2）上的莫非氏管连接端（1-2-1）与莫非氏管（1-1）下端的阀体安装孔（1-1-3）连接，止流阀防护罩（1-3）安装在双向负压止流阀（1-2）外部，其莫非氏管密封安装口（1-3-1）与防护罩安装台（1-1-2）连接，其阀体密封安装口（1-3-2）与双向负压止流阀（1-2）通过阀体防护罩安装台（1-2-10）连接；下输液管连接端（1-2-11）与下输液导管（1-4）安装连接。
  2. 根据权利要求1所述的一次性静脉输液器复合双向负压传导自截止装置（1），其特征是：双向负压止流阀（1-2）由莫非氏管连接端（1-2-1），阀体进液口（1-2-2），上液室（1-2-3），上液室药液出口（1-2-4），上下液室隔断（1-2-5），下液室（1-2-6），下液室药液进口（1-2-7），阀体出液口（1-2-8），上、下环形密封槽（1-2-9），阀体弹性密封导流套（1-2-12），上、下导流套密封环（1-2-13），阀体防护罩安装台（1-2-10），下输液管连接端（1-2-11）构成；上下液室隔断（1-2-5）位于上液室（1-2-3）和下液室（1-2-6）之间，将上液室（1-2-3）和下液室（1-2-6）隔开成两个独立的液室，上液室药液出口（1-2-4）位于上液室（1-2-3）侧壁上，下液室药液进口（1-2-7）位于下液室（1-2-6）侧壁上；上、下环形密封槽（1-2-9）位于上液室药液出口（1-2-4）和下液室药液进口（1-2-7）外侧；阀体弹性密封导流套（1-2-12）套在双向负压止流阀（1-2）的外部，上、下导流套密封环（1-2-13），将阀体弹性密封导流套（1-2-12）抱紧限位于上、下环形密封槽（1-2-9）内，形成密闭结构，上液室药液出口（1-2-4）和下液室药液进口（1-2-7）位于密封区域内。
  3. 根据权利要求1所述的一次性静脉输液器复合双向负压传导自截止装置（1），其特征是：止流阀防护罩（1-3）上有莫非氏管密封安装口（1-3-1）、负压传导三通口（1-3-3）和阀体密封安装口（1-3-2），负压传导三通口（1-3-3）与止流阀防护罩（1-3）构成三通结构，同时构成负压腔，利用阀体弹性密封导流套（1-2-12）在其内部的膨胀和收缩产生空气正负压力，通过负压传导三通口（1-3-3）导出，驱动配套系统工作；止流阀防护罩（1-3）对双向负压止流阀（1-2）起保护作用。
PCT/CN2012/071043 2011-12-05 2012-02-13 一种一次性静脉输液器复合双向负压传导自截止装置 WO2013082882A1 (zh)

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