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WO2018133017A1 - 具反复防血液逆流留置导管组件 - Google Patents

具反复防血液逆流留置导管组件 Download PDF

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Publication number
WO2018133017A1
WO2018133017A1 PCT/CN2017/071834 CN2017071834W WO2018133017A1 WO 2018133017 A1 WO2018133017 A1 WO 2018133017A1 CN 2017071834 W CN2017071834 W CN 2017071834W WO 2018133017 A1 WO2018133017 A1 WO 2018133017A1
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WO
WIPO (PCT)
Prior art keywords
valve
normally closed
closed valve
catheter
sleeve
Prior art date
Application number
PCT/CN2017/071834
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English (en)
French (fr)
Inventor
陈永曦
Original Assignee
福建省百仕韦医用高分子股份有限公司
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Application filed by 福建省百仕韦医用高分子股份有限公司 filed Critical 福建省百仕韦医用高分子股份有限公司
Priority to PCT/CN2017/071834 priority Critical patent/WO2018133017A1/zh
Publication of WO2018133017A1 publication Critical patent/WO2018133017A1/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
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Definitions

  • the present invention relates to an open indwelling needle, and more particularly to an indwelling catheter assembly with repeated anti-blood reflux.
  • An indwelling catheter assembly of an open type indwelling needle in the prior art is composed of a catheter 4 and a catheter hub 1 as shown in Fig. 1.
  • the catheter 4 is inserted and fixed in the catheter hub 1, and the rear end of the catheter hub 1 is open.
  • the connector is inserted and fixed from the rear end of the catheter hub 1, and the infusion tube is connected to the catheter hub 1 and the catheter 4 through the joint to realize infusion.
  • the distal blood vessel of the puncture point is pressed by the finger pressure method to block the blood flow before the needle is withdrawn, and then the needle tube is withdrawn, and the joint needs to be realized immediately.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a repetitive anti-blood countercurrent indwelling catheter assembly that is easy to handle, does not cause clotting, and does not bleed to the outside world.
  • the object of the present invention is achieved by the following route.
  • the device has a repetitive anti-blood counterflow indwelling catheter assembly, including a catheter and a catheter hub, the catheter is inserted and fixed in the catheter hub, and the rear end of the catheter adapter is open, and the main point of the assembly is that it further comprises a normally closed valve and is used for opening the normally closed
  • the switch member of the valve is plugged and fixed in the inner cavity of the catheter seat.
  • the catheter is located in front of the normally closed valve, and the needle tube before the puncture operation penetrates into the valve cavity of the normally closed valve.
  • the object of the present invention can be achieved by the following means.
  • the switch member When the connection is required for the infusion operation, the switch member can be used to open the valve.
  • Switching members of normally closed valves are common in the prior art and can be utilized as long as they are applicable in the present invention. The following are two unique modes of the present invention: a sleeve is sleeved in a valve chamber of a normally closed valve, and the sleeve is pushed forward to push the valve under external force, or the sleeve is normally placed in the valve chamber as a single member. And as a valve core of a normally closed valve or the sleeve is fixedly integrated with the joint and located at the front end of the joint.
  • the front part of the joint can push the sleeve of the single component to push the valve forward; if the sleeve is integrally formed with the joint, the joint accessed by the insertion is completed. While being connected to the catheter hub, the valve is pushed open by the sleeve at the front.
  • the normally closed valve is a ball head seal, and the ball head is cut through the circumferential direction into 3-8 petals, so that the ball head forms a corresponding 3-8 flap normally closed valve piece.
  • the seal is made of an elastic plastic material, and even if it is cut into a flap, it is still elastic and remains normally closed.
  • the normally closed valve is directly made of a sealing member, which can conveniently realize the effect of the normally closed valve, and at the same time solve the sealing problem of the valve and the inner cavity of the catheter seat, and has a simple structure.
  • the thickness of the ball head should also have a certain size. Too thick may have a good effect on the needle but the resistance to the needle tube forming the puncture operation is large.
  • the head wall may be a structure that is gradually thickened from a middle point to an edge. Applicants believe that the following thickness dimensions are preferred:
  • the thickness of the ball head is: 0.4 mm to 1.0 mm.
  • the normally closed valve is a ball head seal, and the ball head is cut into four petals in a circumferential direction by a cross, so that the ball head forms a corresponding four-valve normally closed valve piece, and the periphery of the sealing member has a flange extending along the circumferential direction and The sleeve is fixed by the engagement of the flange with the corresponding annular groove in the lumen of the catheter hub, and a small valve plug is inserted into the inner cavity of the sealing member.
  • the ferrule is made of the front sleeve and the rear Ministry
  • the flange is composed of a sleeve sliding in a valve cavity formed by the inner cavity of the sealing member, the front end of the sleeve is a tapered end, the cone end of the valve core is close to the inner wall of the sealing ball, and the inserted joint is in contact with the valve core.
  • the sleeve advances to push open the 4-valve normally closed valve piece.
  • the valve core flange and the rear end surface of the sealing member are closely attached, and the valve core has a through-liquid through hole, and the needle tube before the puncture operation runs through Through the liquid through hole.
  • the present invention has the following advantages over the prior art: easy operation, no clotting phenomenon, no blood spill to the outside, and simple structure, the normally closed valve can be repeatedly used, and the infusion needle needs to be repeatedly replaced. Requirements for the use of the joint.
  • FIG. 1 is a schematic view of an indwelling catheter assembly of an open indwelling needle in the prior art
  • FIG. 2 is a schematic view showing the structure of an indwelling needle with a repeated anti-blood reflux indwelling catheter assembly according to the present invention
  • FIG. 3 is a schematic view showing the structure of an indwelling catheter assembly with repeated anti-blood reflux according to the present invention
  • Figure 4 is a schematic cross-sectional view showing the structure of a normally closed valve in a repetitive blood-proof counterflow indwelling catheter assembly according to the present invention
  • Figure 5 is a schematic perspective view showing the structure of a normally closed valve in a repetitive anti-blood countercurrent indwelling catheter assembly according to the present invention
  • Figure 6 is a schematic cross-sectional view showing the structure of a valve core in a repetitive blood-proof countercurrent indwelling catheter assembly according to the present invention
  • Figure 7 is a schematic perspective view of a valve core structure in a repetitive anti-blood countercurrent indwelling catheter assembly according to the present invention.
  • Figure 8 is a schematic view showing the structure of a repetitive anti-blood countercurrent indwelling catheter assembly and a joint according to the present invention
  • FIG. 2 and 3 there is a repetitive anti-blood countercurrent indwelling catheter assembly comprising a catheter 4, a catheter hub 1, a normally closed valve 2 and a valve cartridge 3, the catheter 4 being inserted and fixed in the catheter hub 1, the catheter socket 1 rear end Open, the spool 3 is a switch member for opening the normally closed valve 2, and the normally closed valve 2 is plugged and fixed in the rear inner cavity of the catheter hub 1, and the conduit 4 is located in front of the normally closed valve 2.
  • the normally closed valve 2 is a ball head seal, and the ball head 2.1 is cut into four petals by a cross in the circumferential direction.
  • the ball head 2.1 is formed into a corresponding four-valve normally closed valve plate 2.5, the periphery of the seal having a circumferentially extending flange 2.2 and through which the engagement of the flange 2.2 with the corresponding annular groove 1.1 in the lumen of the catheter hub 1
  • a small valve core 3 is inserted into the inner cavity of the sealing member, the butyl valve core is composed of a front sleeve and a rear flange, and the sleeve is sleeved in the inner cavity of the sealing member.
  • the front end of the sleeve has a tapered end, and the tapered end of the valve core 3 is close to the inner wall of the ball head of the sealing member, and the sleeve is pushed forward by the external force of the inserted joint on the top of the valve core flange.
  • the 4-valve normally closed valve piece 2.5 at this time, the flange of the valve core 3 is closely attached to the rear end surface of the sealing member, and the valve core has a through-liquid through hole, and the needle tube before the puncture operation penetrates through the through-liquid through hole.
  • the needle When the indwelling needle is successfully inserted into the tube, the needle can be directly withdrawn, and the spherical valve piece 2.5 on the sealing member is quickly closed under the elastic recovery of the material itself, and the blood pressure is pressed against the spherical surface, so that the valve piece 2.5 is pressed in the middle. In this way, the airtightness between the valve sheets is better, and the blood does not flow out of the catheter hub 1.
  • the joint is inserted. As shown in Fig.
  • the front end face of the male joint abuts against the flange face of the valve core 3, pushing the valve core 3 forward, and the front end of the valve core 3 is squeezed open by the valve piece 2.5, so that the joint is inside
  • the cavity is connected to the lumen of the catheter hub 1 and the catheter 4 through the through hole of the valve body 3, and the liquid can be infused.

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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

一种开放式留置针，特别是一种反复防血液逆流留置导管组件，包括导管（4）和导管座（1），导管（4）插置并固定在导管座（1）中，导管座（1）后端开放，该反复防血液逆流留置导管组件还包括一种常闭阀门（2）和用于打开此常闭阀门（2）的开关构件（3），此常闭阀门（2）塞装并固定在导管座（1）后部内腔中，导管（4）位于此常闭阀门（2）的前方，穿刺作业前的针管贯穿于此常闭阀门（2）的阀腔中。相比现有技术，其具有如下优点：便于操作，不会产生凝液现象，不会溢血至外界，而且结构简单，常闭阀门（2）可以反复使用，满足留置针需反复更换输液接头的使用要求。

Description

具反复防血液逆流留置导管组件 技术领域
本发明涉及一种开放式留置针，特别是一种具反复防血液逆流留置导管组件。
背景技术
现有技术中的一种开放式留置针的留置导管组件如图1所示，由导管4和导管座1组成，导管4插置并固定在导管座1中，导管座1后端开放，当针管穿刺成功后从导管4以及导管座1内腔中拔出后，接头将从导管座1后端插入并固定，输液管具通过接头与导管座1、导管4连通实现输液。通常开放式留置针在穿刺置管成功以后，在撤出针管之前，都要靠指压法压住穿刺点远端血管进行阻断血液流动，然后再撤出针管，并同时还需要立即实现接头与导管座的插置固定，以防止血液通过导管流入导管座内腔。但是这样的操作繁琐，即便是熟练护士也会时常操作不当，血液就会通过导管流入导管座内腔并通过导管座的后端与空气接触产生凝液，这种凝血要是在随后输液被输回血管，存在产生血栓隐患，要是溢血严重，甚至通过导管座后端流出到外界，污染环境。
发明构成
本发明的目的在于克服现有技术的不足之处，而提供一种便于操作，不会产生凝液现象，不会溢血至外界的具反复防血液逆流留置导管组件。
本发明的目的是通过以下途径来实现的。
具反复防血液逆流留置导管组件，包括导管和导管座，导管插置并固定在导管座中，导管座后端开放，其组成要点在于：还包括一种常闭阀门和用于打开此常闭阀门的开关构件，此常闭阀门塞装并固定在导管座后部内腔中，导管位于此常闭阀门的前方，穿刺作业前的针管贯穿于此常闭阀门的阀腔中。
这样，因是常闭阀门，完成穿刺作业的针管撤离后，阀门自动关闭，堵绝了血液从导管座后端溢出，也杜绝了血液与导管座外的空气接触，从而使凝血现象不再发生。
本发明的目的是可以通过以下途径来实现。
当接上接头需要进行输液作业时，此时可以使用开关构件打开阀门。常闭阀门的开关构件现有技术中常见，只要可以适用在本发明中均可以利用。以下是本发明两种特有的方式：一种套管滑套在常闭阀门的阀腔中，在外力作用下，套管前移推开阀门，或者此套管作为单一构件常置在阀腔中并作为常闭阀门的阀芯或者此套管与接头固接一体并位于接头的前端。
这样，接头从导管座后端插置接入时，接头前部可以推动单一构件的此套管向前推开阀门；若是此套管与接头一体构造，则由插置接入的接头在完成与导管座接驳的同时由其前部的套管推开阀门。
常闭阀门现有技术中常见，只要可以适用在本发明中均可以利用。以下是本发明特有的一种方式：
常闭阀门是一种球头密封件，球头沿周向被贯穿切成3-8瓣，使球头形成相应的3-8瓣常闭阀片。
密封件是弹性塑件材料制成，即使切制成瓣，也依然弹支成原样而保持常闭。
常闭阀门直接用密封件做成，既能方便实现常闭阀门的效果，又同时解决阀门与导管座内腔的密封问题，且结构简单。
为使弹支成原样的效果更好，除了密封件的材质合适以外，球头的厚度还应有一定的尺寸，太厚也许弹支效果好但对穿刺作业的针管形成的阻力较大，球头壁体可以是一种由中间点至边缘由薄逐渐变厚构造。申请人认为，以下的厚度尺寸是优选的：
球头的厚度是：0.4毫米～1.0毫米。
申请人认为，以下是本发明的优选方案：
常闭阀门是一种球头密封件，球头沿周向被十字贯穿切成4瓣，使球头形成相应的4瓣常闭阀片，密封件外围具有沿周向延伸分布的凸缘并通过此凸缘与导管座内腔中的相应环形凹槽的嵌接而与导管座固定，在密封件内腔插接一丁形阀芯，此丁形阀芯由前部的套管和后部的 凸缘组成，套管滑套在密封件内腔所形成的阀腔中，套管前端呈一锥端，阀芯锥端靠近密封件球头内壁，在插置进来的接头顶触在阀芯凸缘的外力作用下，套管前移推开4瓣常闭阀片，此时阀芯凸缘与密封件后端面紧贴，阀芯有一过液通孔，穿刺作业前的针管贯穿于此过液通孔中。
综上所述，本发明相比现有技术具有如下优点：便于操作，不会产生凝液现象，不会溢血至外界，而且结构简单，常闭阀门可以反复使用，满足留置针需反复更换输液接头的使用要求。
附图说明
图1是现有技术中的一种开放式留置针的留置导管组件示意图；
图2是本发明所述的一种具反复防血液逆流留置导管组件的留置针的结构示意图；
图3是本发明所述的一种具反复防血液逆流留置导管组件结构示意图；
图4是本发明所述的一种具反复防血液逆流留置导管组件中的常闭阀门结构示意剖视图；
图5是本发明所述的一种具反复防血液逆流留置导管组件中的常闭阀门结构示意立体图；
图6是本发明所述的一种具反复防血液逆流留置导管组件中的阀芯结构示意剖视图；
图7是本发明所述的一种具反复防血液逆流留置导管组件中的阀芯结构示意立体图；
图8是本发明所述的一种具反复防血液逆流留置导管组件与接头结合在一起的结构示意图；
下面结合附图对本发明进行更详尽的描述。
具体实施方式
最佳实施例：
参照图2和图3，具反复防血液逆流留置导管组件，包括导管4、导管座1、常闭阀门2和阀芯3，导管4插置并固定在导管座1中，导管座1后端开放，阀芯3是用于打开此常闭阀门2的开关构件，此常闭阀门2塞装并固定在导管座1后部内腔中，导管4位于此常闭阀门2的前方。
参照图4-图8，常闭阀门2是一种球头密封件，球头2.1沿周向被十字贯穿切成4瓣， 使球头2.1形成相应的4瓣常闭阀片2.5，密封件外围具有沿周向延伸分布的凸缘2.2并通过此凸缘2.2与导管座1内腔中的相应环形凹槽1.1的嵌接而与导管座1固定，在密封件内腔插接一丁形阀芯3，此丁形阀芯由前部的套管和后部的凸缘组成，套管滑套在密封件内腔所形成的阀腔中，套管前端呈一锥端，阀芯3锥端靠近密封件球头内壁，在插置进来的接头顶触在阀芯凸缘的外力作用下，套管前移推开4瓣常闭阀片2.5，此时阀芯3凸缘与密封件后端面紧贴，阀芯有一过液通孔，穿刺作业前的针管贯穿于此过液通孔中。
当留置针穿刺置管成功后，可以直接撤出针管，密封件上球形阀片2.5在自身材料弹性恢复作用下，迅速闭合，再加上血液血压压迫球面，令阀片2.5往中间挤压，如此阀片间密闭性更好，血液也就不会流出导管座1外。需要输液时，插入接头，如图6所示，阳接头前端面抵住阀芯3凸缘面，推动阀芯3往前移动，阀芯3前端锥头挤开阀片2.5，如此，接头内腔通过阀芯3通孔与导管座1及导管4内腔进行联通了，就可以输液了。而当留置针留置需要更换接头时，旋转退出接头，阀芯3凸缘的大端面重新自由，在密封件弹性力作用下，迅速往外滑移，球面阀片重新闭合，阻断导管座内腔液体外流，可以安全放心更换接头。
本实施例未述部分与现有技术相同。

Claims (9)

  1. 具反复防血液逆流留置导管组件，包括导管和导管座，导管插置并固定在导管座中，导管座后端开放，其特征在于，还包括一种常闭阀门和用于打开此常闭阀门的开关构件，此常闭阀门塞装并固定在导管座后部内腔中，导管位于此常闭阀门的前方，穿刺作业前的针管贯穿于此常闭阀门的阀腔中。
  2. 根据权利要求1所述的具反复防血液逆流留置导管组件，其特征在于，当接上接头需要进行输液作业时，使用开关构件打开阀门的构造，或者是一种套管滑套在常闭阀门的阀腔中，在外力作用下，套管前移推开阀门；或者此套管作为单一构件常置在阀腔中并作为常闭阀门的阀芯或者此套管与接头固接一体并位于接头的前端。
  3. 根据权利要求1或2所述的具反复防血液逆流留置导管组件，其特征在于，常闭阀门是一种球头密封件，球头沿周向被贯穿切成3-8瓣，使球头形成相应的3-8瓣常闭阀片，密封件是弹性塑件材料制成，切制成瓣后依然弹支成原样而保持常闭。
  4. 根据权利要求1所述的具反复防血液逆流留置导管组件，其特征在于，常闭阀门是一种球头密封件，球头沿周向被十字贯穿切成4瓣，使球头形成相应的4瓣常闭阀片，密封件外围具有沿周向延伸分布的凸缘并通过此凸缘与导管座内腔中的相应环形凹槽的嵌接而与导管座固定，在密封件内腔插接一丁形阀芯，此丁形阀芯由前部的套管和后部的凸缘组成，套管滑套在密封件内腔所形成的阀腔中，套管前端呈一锥端，阀芯锥端靠近密封件球头内壁，在插置进来的接头顶触在阀芯凸缘的外力作用下，套管前移推开4瓣常闭阀片，此时阀芯凸缘与密封件后端面紧贴，阀芯有一过液通孔，穿刺作业前的针管贯穿于此过液通孔中。
  5. 根据权利要求3所述的具反复防血液逆流留置导管组件，其特征在于，球头壁体是一种由中间点至边缘由薄逐渐变厚构造。
  6. 根据权利要求4所述的具反复防血液逆流留置导管组件，其特征在于，球头壁体是一种由中间点至边缘由薄逐渐变厚构造。
  7. 根据权利要求3所述的具反复防血液逆流留置导管组件，其特征在于，球头的厚度是：0.4毫米～1.0毫米。
  8. 根据权利要求4所述的具反复防血液逆流留置导管组件，其特征在于，球头的厚度是：0.4毫米～1.0毫米。
  9. 根据权利要求6所述的具反复防血液逆流留置导管组件，其特征在于，球头的厚度是：0.4毫米～1.0毫米。
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020128604A1 (en) * 2001-03-12 2002-09-12 Hiroaki Nakajima Indwelling catheter
US20080208132A1 (en) * 2007-01-17 2008-08-28 Tyco Healthcare Group Lp Indwelling Needle
CN201855466U (zh) * 2010-09-14 2011-06-08 日本美德医疗集团 带止血阀的留置导管
CN202605427U (zh) * 2012-04-12 2012-12-19 福建省百仕韦医用高分子股份有限公司 具有防逆流阀的留置针导管组件
WO2013051242A1 (ja) * 2011-10-05 2013-04-11 二プロ株式会社 留置用カテーテル
CN203694221U (zh) * 2013-08-03 2014-07-09 张建铭 环槽定位式体外输液导管止流开关
CN106029152A (zh) * 2014-01-21 2016-10-12 贝克顿·迪金森公司 具有组合的端口和带通气口的血液控制阀的带端口的留置针接头
CN205832299U (zh) * 2016-06-16 2016-12-28 吴艳琴 一种动脉注射防逆流留置针

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020128604A1 (en) * 2001-03-12 2002-09-12 Hiroaki Nakajima Indwelling catheter
US20080208132A1 (en) * 2007-01-17 2008-08-28 Tyco Healthcare Group Lp Indwelling Needle
CN201855466U (zh) * 2010-09-14 2011-06-08 日本美德医疗集团 带止血阀的留置导管
WO2013051242A1 (ja) * 2011-10-05 2013-04-11 二プロ株式会社 留置用カテーテル
CN202605427U (zh) * 2012-04-12 2012-12-19 福建省百仕韦医用高分子股份有限公司 具有防逆流阀的留置针导管组件
CN203694221U (zh) * 2013-08-03 2014-07-09 张建铭 环槽定位式体外输液导管止流开关
CN106029152A (zh) * 2014-01-21 2016-10-12 贝克顿·迪金森公司 具有组合的端口和带通气口的血液控制阀的带端口的留置针接头
CN205832299U (zh) * 2016-06-16 2016-12-28 吴艳琴 一种动脉注射防逆流留置针

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