CN204170209U - Closed remaining needle - Google Patents
Closed remaining needle Download PDFInfo
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- CN204170209U CN204170209U CN201420584217.7U CN201420584217U CN204170209U CN 204170209 U CN204170209 U CN 204170209U CN 201420584217 U CN201420584217 U CN 201420584217U CN 204170209 U CN204170209 U CN 204170209U
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- joint
- closed
- liquid inlet
- sealing plug
- elastic sealing
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- 239000007788 liquid Substances 0.000 claims abstract description 90
- 238000001802 infusion Methods 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 208000014951 hematologic disease Diseases 0.000 abstract description 7
- 241000894006 Bacteria Species 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 4
- 229960002897 heparin Drugs 0.000 description 4
- 229920000669 heparin Polymers 0.000 description 4
- 238000001990 intravenous administration Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 208000019901 Anxiety disease Diseases 0.000 description 2
- 230000036506 anxiety Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 208000019838 Blood disease Diseases 0.000 description 1
- 206010073753 Fear of injection Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 208000018706 hematopoietic system disease Diseases 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229940127558 rescue medication Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
本实用新型公开一种密闭式留置针，包括针头、第一进液接头以及连接管路，所述第一进液接头为封闭式接头，所述封闭式接头包括出液端、进液端输液通道以及弹性密封塞，所述弹性密封塞具有位于所述输液通道的延伸方向上的第一端面和第二端面，自所述弹性密封塞的第一端面向第二端面开设有一狭缝，所述狭缝具有被所述弹性密封塞的主体挤压而闭合的闭合状态，以使所述输液通道与外界隔绝，细菌或者尘埃不能自所述进液端进入，注液时，所述狭缝还具有用以供所述输液器的接头挤进穿过而与所述出液端连通的撑开状态，可采用无针输液器挤进穿过所述狭缝进行注液，因而避免因钢针带来的使患者和医护人员存在传染血液疾病的风险的问题。
The utility model discloses a closed indwelling needle, which includes a needle head, a first liquid inlet joint and a connecting pipeline, the first liquid inlet joint is a closed joint, and the closed joint includes a liquid outlet end and a liquid inlet end for infusion A channel and an elastic sealing plug, the elastic sealing plug has a first end surface and a second end surface located in the extending direction of the infusion channel, and a slit is opened from the first end surface of the elastic sealing plug to the second end surface, so The slit has a closed state of being squeezed and closed by the main body of the elastic sealing plug, so that the infusion channel is isolated from the outside world, and bacteria or dust cannot enter from the liquid inlet end. When injecting liquid, the slit It also has a stretched state for the joint of the infusion set to squeeze in and pass through to communicate with the liquid outlet, and a needle-free infusion set can be used to squeeze in through the slit for injection, thus avoiding the The problems posed by needles put patients and healthcare workers at risk of transmitting blood diseases.
Description
技术领域technical field
本实用新型涉及医疗器械技术领域，尤其涉及一种密闭式留置针。The utility model relates to the technical field of medical instruments, in particular to a closed indwelling needle.
背景技术Background technique
静脉留置针又称静脉套管针，核心的组成部件包括可以留置在血管内的柔软的导管/套管,以及不锈钢的穿刺引导针芯，使用时将导管和针芯一起穿刺入血管内，当导管全部进入血管后，回撤出针芯，仅将柔软的导管留置在血管内从而进行输液治疗。The venous indwelling needle is also called the venous trocar. The core components include a soft catheter/cannula that can be indwelled in the blood vessel, and a stainless steel puncture guide core. When used, the catheter and the needle core are punctured into the blood vessel together. After the catheter is fully inserted into the blood vessel, the needle core is withdrawn, and only the soft catheter is left in the blood vessel for infusion therapy.
静脉留置针使用能减少患儿因反复静脉穿刺而造成的痛苦及对打针的恐惧感，减轻家长的焦躁情绪，便于临床用药，急、危重患者的抢救用药，减轻护士的工作量，减少患儿疼痛，因而静脉留置针在临床广泛应用，面对患儿这一特殊群体，静脉留置针留置时间的长短和患儿的舒适成为护士及家长最为关注的问题，也是留置针成功使用的标志和推广的前提。The use of intravenous indwelling needles can reduce the pain caused by repeated venipuncture and the fear of injections in children, relieve the anxiety of parents, facilitate clinical medication, rescue medication for acute and critical patients, reduce the workload of nurses, and reduce the risk of children's anxiety. Pain, so intravenous indwelling needles are widely used clinically. Facing the special group of children, the indwelling time of intravenous indwelling needles and the comfort of children have become the most concerned issues for nurses and parents, and they are also the symbol and promotion of the successful use of indwelling needles. premise.
目前业界比较常用的留置针包括开放式留置针和密闭式留置针，其中，开放式留置针通常采用防护帽盖在所述进液接头的进液接头，来对留置针进行防护，在使用过程中，先取下防护帽而将所述输液器的接头与进液接头连接，然而，在取下防护帽之后且所述输液器的接头插接于进液接头之前，细菌或者尘埃容易自所述进液接头进入而污染所述开放式留置针，使得所述开放式留置针不能长时间使用。At present, the indwelling needles commonly used in the industry include open indwelling needles and closed indwelling needles. Among them, open indwelling needles usually use a protective cap to cover the liquid inlet joint of the liquid inlet connector to protect the indwelling needle. In the process, first remove the protective cap and connect the connector of the infusion set with the liquid inlet connector, however, after the protective cap is removed and before the connector of the infusion set is inserted into the liquid inlet connector, bacteria or dust can easily come from the The liquid inlet joint enters and pollutes the open indwelling needle, so that the open indwelling needle cannot be used for a long time.
封闭式留置针相较于开放式留置针不同之处主要在于：封闭式留置针的进液接头设有肝素帽，使用时，无需取下肝素帽，而是通过带有钢针的输液器的接头扎穿所述肝素帽而进入所述进液接头中。然而，采用钢针的输液器会有风险主要在于：使用时，医护人员可能因失误而取用他人已使用过且未经消毒的钢针，而使患者有传染到血液疾病的风险，并且，钢针在穿过肝素帽过程中有可能产生微屑，而微屑有可能在穿刺过程中伴随输液或输血而进入患者的静脉，使用后，粘有患者的血液的钢针可能扎到医护人员，造成医护人员有传染血液疾病的风险，也即，采用带有钢针患者和医护人员存在传染血液疾病的风险。The difference between the closed indwelling needle and the open indwelling needle is that the liquid inlet connector of the closed indwelling needle is equipped with a heparin cap. When using it, it is not necessary to remove the heparin cap, but to pass through the infusion set with a steel needle. A connector is pierced through the heparin cap into the inlet connector. However, the infusion sets using steel needles have risks mainly in that during use, medical personnel may take unsterilized steel needles that have been used by others by mistake, so that patients have the risk of infecting blood diseases, and, The steel needle may generate fine debris during the process of passing through the heparin cap, and the fine debris may enter the patient's vein during the puncture process along with the infusion or blood transfusion. After use, the steel needle sticking with the patient's blood may pierce the medical staff , causing medical staff to have the risk of infecting blood diseases, that is, there is a risk of infecting blood diseases among patients and medical staff with steel needles.
实用新型内容Utility model content
本实用新型的主要目的在于解决细菌或者尘埃自开放式留置针的进液接头进入而使得开放式留置针需要经常更换，以及密封式留置针需要采用带钢针的输液器，而钢针的存在使得患者和医护人员存在传染血液疾病的风险的问题。The main purpose of this utility model is to solve the problem that bacteria or dust enter from the liquid inlet joint of the open indwelling needle, so that the open indwelling needle needs to be replaced frequently, and the sealed indwelling needle needs to use an infusion set with a steel needle, and the existence of the steel needle Problems that put patients and healthcare workers at risk of contracting blood disorders.
为到达上述之技术目的，本实用新型提供一种密闭式留置针，包括针头、第一进液接头以及连接管路，所述第一进液接头为封闭式接头，所述封闭式接头包括与所述连接管路连接的出液端、用以与输液器的接头连接的进液端、贯通所述进液端和所述出液端的输液通道、以及设于所述输液通道内的弹性密封塞，所述弹性密封塞具有位于所述输液通道的延伸方向上的第一端面和第二端面，所述第一端面靠近所述进液端设置，所述第二端面背离所述进液端设置，自所述弹性密封塞的第一端面向第二端面开设有一狭缝，所述狭缝具有被所述弹性密封塞的主体挤压而闭合的闭合状态、以及用以供所述输液器的接头挤进穿过而与所述出液端连通的撑开状态。In order to achieve the above technical purpose, the utility model provides a closed indwelling needle, including a needle head, a first liquid inlet joint and a connecting pipeline, the first liquid inlet joint is a closed joint, and the closed joint includes a The liquid outlet connected by the connecting pipeline, the liquid inlet used to connect with the joint of the infusion set, the infusion channel passing through the liquid inlet and the liquid outlet, and the elastic seal set in the infusion channel The elastic sealing plug has a first end surface and a second end surface located in the extending direction of the infusion channel, the first end surface is arranged close to the liquid inlet end, and the second end surface is away from the liquid inlet end It is provided that a slit is opened from the first end face of the elastic sealing plug to the second end face, the slit has a closed state of being squeezed and closed by the main body of the elastic sealing plug, and is used for the infusion set The joint squeezes through and communicates with the liquid outlet in a stretched state.
优选地，所述弹性密封塞采用硅胶制成。Preferably, the elastic sealing plug is made of silica gel.
优选地，所述狭缝为一字型狭缝或十字型狭缝。Preferably, the slit is a straight slit or a cross-shaped slit.
优选地，自所述弹性密封塞的第二端面向第一端面凹设有让位槽，所述狭缝贯穿所述让位槽的底部设置。Preferably, a relief groove is recessed from the second end surface of the elastic sealing plug to the first end surface, and the slit is provided through the bottom of the relief groove.
优选地，所述密闭式留置针还包括第二进液接头，所述连接管路包括三通管、将所述三通管的一端口与所述针头连接的单路管，所述三通管的另外两端口与所述第一进液接头和所述第二进液接头连接。Preferably, the closed indwelling needle also includes a second liquid inlet joint, and the connecting pipeline includes a three-way tube, a one-way tube connecting a port of the three-way tube with the needle, and the three-way tube The other two ports of the tube are connected with the first liquid inlet joint and the second liquid inlet joint.
优选地，所述第二进液接头为所述封闭式接头。Preferably, the second liquid inlet joint is the closed joint.
优选地，所述封闭式接头包括公接头以及与所述公接头固定连接的母接头，所述公接头包括公接头主体、位于所述公接头主体的一端的所述出液端、位于所述公接头主体的另一端的插接端、以及贯通所述出液端和所述插接端的公接头内腔，所述母接头包括母接头主体、位于所述母接头主体的一端的所述进液端、位于所述母接头主体的另一端的套接端、以及贯通所述进液端和所述套接端的母接头内腔，所述公接头的插接端自所述母接头的套接端与所述母接头内腔套接，所述弹性密封塞安装于所述母接头内腔中，且所述弹性密封塞的第二端面与所述公接头的插接端的端面相抵接。Preferably, the closed connector includes a male connector and a female connector fixedly connected to the male connector, the male connector includes a male connector body, the liquid outlet at one end of the male connector body, and a The plug-in end at the other end of the male connector body and the male connector inner cavity passing through the liquid outlet end and the plug-in end, the female connector includes a female connector body, the inlet at one end of the female connector body The liquid end, the sleeve end located at the other end of the main body of the female joint, and the inner cavity of the female joint passing through the liquid inlet end and the sleeve end, the insertion end of the male joint is connected from the sleeve of the female joint The connection end is socketed with the inner cavity of the female joint, the elastic sealing plug is installed in the inner cavity of the female joint, and the second end surface of the elastic sealing plug abuts against the end surface of the plug-in end of the male joint.
优选地，所述公接头和所述母接头采用超声波焊接而固定连接。Preferably, the male joint and the female joint are fixedly connected by ultrasonic welding.
优选地，所述公接头的插接端的端面上围绕所述公接头内腔的端口凸设有环形限位部，所述环形限位部的内侧形成有限位空间，所述弹性密封塞的远离所述进液端的一端容置且被限位于所述限位空间中。Preferably, on the end surface of the plug-in end of the male connector, a ring-shaped limiting part is protruded around the port of the inner cavity of the male connector, and a limited space is formed inside the ring-shaped limiting part, and the elastic sealing plug is away from One end of the liquid inlet is accommodated and limited in the limiting space.
优选地，所述公接头的插接端的端面围绕所述环形限位部凸设有环形配合部，所述母接头的套接端的端面设有与所述环形配合部相配合的环形凹槽。Preferably, the end surface of the plug-in end of the male connector is provided with an annular fitting portion protruding around the annular limiting portion, and the end surface of the socket end of the female connector is provided with an annular groove matching the annular fitting portion.
本实用新型提供的密闭式留置针，包括针头、第一进液接头以及连接管路，所述第一进液接头为封闭式接头，所述封闭式接头包括与所述连接管路连接的出液端、用以与输液器的接头连接的进液端、贯通所述进液端和所述出液端的输液通道、以及设于所述输液通道内的弹性密封塞，所述弹性密封塞具有位于所述输液通道的延伸方向上的第一端面和第二端面，所述第一端面靠近所述进液端设置，所述第二端面背离所述进液端设置，自所述弹性密封塞的第一端面向第二端面开设有一狭缝，所述狭缝具有被所述弹性密封塞的主体挤压而闭合的闭合状态、以及用以供所述输液器的接头挤进穿过而与所述出液端连通的撑开状态，所述弹性密封塞将所述输液通道与外界隔绝，细菌或者尘埃不能自第一进液接头进入，因而，使得所述密闭式留置针可长时间使用，注液时，可采用无针输液器挤进穿过所述狭缝进行注液，因而避免因钢针带来的使患者和医护人员存在传染血液疾病的风险的问题。The closed indwelling needle provided by the utility model includes a needle head, a first liquid inlet joint and a connecting pipeline. The first liquid inlet joint is a closed joint, and the closed joint includes an outlet connected to the connecting pipeline. The liquid end, the liquid inlet end used to connect with the connector of the infusion set, the infusion channel passing through the liquid inlet end and the liquid outlet end, and the elastic sealing plug arranged in the infusion liquid channel, the elastic sealing plug has A first end surface and a second end surface located in the extending direction of the infusion channel, the first end surface is arranged close to the liquid inlet end, the second end surface is arranged away from the liquid inlet end, and the elastic sealing plug A slit is opened on the first end facing the second end surface, the slit has a closed state of being squeezed and closed by the main body of the elastic sealing plug, and is used for the connector of the infusion set to squeeze through to be connected with the In the stretched state where the liquid outlet is connected, the elastic sealing plug isolates the infusion channel from the outside world, and bacteria or dust cannot enter through the first liquid inlet joint, so that the closed indwelling needle can be used for a long time When injecting liquid, a needle-free infusion set can be used to squeeze in through the slit for injecting liquid, thus avoiding the problem that patients and medical staff have the risk of infecting blood diseases caused by steel needles.
附图说明Description of drawings
图1为本实用新型提供的密闭式留置针的一实施例的结构示意图；Fig. 1 is a schematic structural view of an embodiment of the closed indwelling needle provided by the present invention;
图2为本实用新型提供的密闭式留置针的另一实施例的结构示意图；Fig. 2 is a schematic structural view of another embodiment of the closed indwelling needle provided by the present invention;
图3为图1或图2所示的密闭式留置针的封闭式接头的剖视结构示意图。Fig. 3 is a schematic cross-sectional structural view of the closed connector of the closed indwelling needle shown in Fig. 1 or Fig. 2 .
本实用新型目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.
具体实施方式Detailed ways
以下结合说明书附图及具体实施例进一步说明本实用新型的技术方案。应当理解，此处所描述的具体实施例仅仅用以解释本实用新型，并不用于限定本实用新型。The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments of the description. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.
本实用新型提供一种密闭式留置针，图1为本实用新型提供的密闭式留置针的一实施例，图2为本实用新型提供的密闭式留置针的另一实施例，图3为图1或图2所示的密闭式留置针的封闭式接头的剖视结构示意图。The utility model provides a closed indwelling needle, Fig. 1 is an embodiment of the closed indwelling needle provided by the utility model, Fig. 2 is another embodiment of the closed indwelling needle provided by the utility model, and Fig. 3 is a diagram 1 or a schematic cross-sectional structural view of the closed joint of the closed indwelling needle shown in FIG. 2 .
请参阅图1至图3，所述密闭式留置针100包括针头1、第一进液接头2、第二进液接头3以及连接管路4，所述连接管路4包括三通管41、以及将所述三通管41的一端口与所述针头1连接的单路管42，所述三通管41的另外两端口与所述第一进液接头2和所述第二进液接头3连接。显然，本设计不限于此，所述密闭式留置针100也可只包括一个进液接头即所述第一进液接头2，相应地，所述连接管路4可只包括将所述针头1与所述第一进液接头2连接的单路管42。Referring to FIGS. 1 to 3 , the closed indwelling needle 100 includes a needle head 1, a first liquid inlet connector 2, a second liquid inlet connector 3 and a connecting pipeline 4, and the connecting pipeline 4 includes a three-way pipe 41, And a one-way tube 42 that connects one port of the three-way tube 41 with the needle 1, and the other two ports of the three-way tube 41 are connected with the first liquid inlet joint 2 and the second liquid inlet joint. 3 connections. Obviously, the present design is not limited thereto, and the airtight indwelling needle 100 may also include only one liquid inlet connector, that is, the first liquid inlet connector 2. Correspondingly, the connecting pipeline 4 may only include the needle 1 A one-way pipe 42 connected to the first liquid inlet joint 2 .
所述第一进液接头2为封闭式接头5，于图1本实用新型提供的密闭式留置针的一实施例中，所述第二进液接头3为通过防护帽进行防护的普通进液接头，于图2本实用新型提供的密闭式留置针的另一实施例中，所述第二进液接头3也为所述封闭式接头5。The first liquid inlet joint 2 is a closed joint 5. In one embodiment of the closed indwelling needle provided by the utility model in FIG. Joint, in another embodiment of the closed indwelling needle provided by the present invention in FIG. 2 , the second liquid inlet joint 3 is also the closed joint 5 .
所述封闭式接头5包括与所述连接管路4连接的出液端51、用以与输液器的接头连接的进液端52、贯通所述进液端52和所述出液端51的输液通道53、以及设于所述输液通道53内的弹性密封塞54，所述弹性密封塞54具有位于所述输液通道53的延伸方向上的第一端面541和第二端面542，所述第一端面541靠近所述进液端52设置，所述第二端面542背离所述进液端52设置，自所述弹性密封塞54的第一端面541向第二端面542开设有一狭缝543，所述狭缝543具有被所述弹性密封塞54的主体挤压而闭合的闭合状态(如图3所示)、以及用以供所述输液器的接头挤进穿过而与所述出液端51连通的撑开状态(未图示)。The closed joint 5 includes a liquid outlet 51 connected to the connecting pipeline 4, a liquid inlet 52 for connecting with a joint of an infusion set, a liquid outlet 52 passing through the liquid inlet 52 and the liquid outlet 51. The infusion channel 53, and the elastic sealing plug 54 arranged in the infusion channel 53, the elastic sealing plug 54 has a first end face 541 and a second end face 542 located in the extending direction of the infusion channel 53, the first end face 542 One end surface 541 is arranged close to the liquid inlet end 52, the second end surface 542 is arranged away from the liquid inlet end 52, and a slit 543 is formed from the first end surface 541 of the elastic sealing plug 54 to the second end surface 542, The slit 543 has a closed state (as shown in FIG. 3 ) that is squeezed and closed by the main body of the elastic sealing plug 54 , and is used for the joint of the infusion set to squeeze in and pass through to communicate with the liquid outlet. The open state (not shown) in which the end 51 communicates.
使用时，所述密闭式留置针100的针头具体为针头1的软管留置于患者体内，在注液之前即所述输液器的接头插置进所述进液端52之前，所述狭缝543被所述弹性密封塞54的主体挤压而闭合，以使得所述输液通道53与外界隔绝，细菌和尘埃不能自所述进液端52进入所述输液通道53，因而，使得所述密闭式留置针100可长时间使用。When in use, the needle of the closed indwelling needle 100, specifically the flexible tube of the needle 1, is left in the patient's body. 543 is squeezed and closed by the main body of the elastic sealing plug 54, so that the infusion channel 53 is isolated from the outside world, and bacteria and dust cannot enter the infusion channel 53 from the liquid inlet 52, thus making the airtight The type indwelling needle 100 can be used for a long time.
注液时，可采用无针注液器的(带锥形)接头挤进穿过所述狭缝543与所述输液通道53连通而进行注液，因而避免因钢针带来的使患者和医护人员存在传染血液疾病的风险的问题。并且，在注液过程中，所述弹性密封塞54与所述无针注液器的接头贴合，而使得所述输液通道53仍与外界隔绝，细菌和尘埃不能自所述进液端52进入所述输液通道53。During liquid injection, the (tapered) joint of the needle-free injector can be used to squeeze through the slit 543 and communicate with the infusion channel 53 for liquid injection, thereby avoiding the patient and the patient due to the steel needle. The issue of health care workers being at risk of contracting blood diseases. Moreover, during the liquid injection process, the elastic sealing plug 54 is attached to the joint of the needle-free liquid injector, so that the infusion channel 53 is still isolated from the outside world, and bacteria and dust cannot pass through the liquid inlet port 52. Enter the infusion channel 53.
优选地，所述弹性密封塞54采用硅胶制成，此外，于本实施例中，自所述弹性密封塞54的第二端面542向第一端面541凹设有让位槽544，在所述弹性密封塞54挤压装进所述输液通道53过程中，所述弹性密封塞54的主体向所述让位槽544中变形而方便安装，所述狭缝543贯穿所述让位槽544的底部设置。所述狭缝543为一字型狭缝或十字型狭缝。Preferably, the elastic sealing plug 54 is made of silica gel. In addition, in this embodiment, a relief groove 544 is recessed from the second end surface 542 to the first end surface 541 of the elastic sealing plug 54 . When the elastic sealing plug 54 is squeezed into the infusion channel 53, the main body of the elastic sealing plug 54 is deformed into the relief groove 544 to facilitate installation, and the slit 543 runs through the relief groove 544. Bottom setting. The slit 543 is a straight slit or a cross slit.
于本实施例中，所述封闭式接头5采用两件式的结构而便于成型，具体地，所述封闭式接头5包括公接头5a以及与所述公接头5a固定连接的母接头5b。其中，所述公接头5a包括公接头主体(未标号)、位于所述公接头主体的一端的所述出液端51、位于所述公接头主体的另一端的插接端55、以及贯通所述出液端51和所述插接端55的公接头内腔53a，所述母接头5b包括母接头主体(未标号)、位于所述母接头主体的一端的所述进液端52、位于所述母接头主体的另一端的套接端56、以及贯通所述进液端52和所述套接端56的母接头内腔53b，所述公接头5a的插接端55自所述母接头5b的套接端56与所述母接头内腔53b套接，所述公接头内腔53a与所述母接头内腔53b连通而构成所述输液通道53，并且，所述公接头5a和所述母接头5b采用超声波焊接而固定连接。所述弹性密封塞54安装于所述母接头内腔53b中，且所述弹性密封塞54的第二端面542与所述公接头5a的插接端55的端面相抵接。In this embodiment, the closed joint 5 adopts a two-piece structure to facilitate molding. Specifically, the closed joint 5 includes a male joint 5a and a female joint 5b fixedly connected to the male joint 5a. Wherein, the male connector 5a includes a male connector body (not labeled), the liquid outlet 51 located at one end of the male connector body, the insertion end 55 located at the other end of the male connector body, and a The liquid outlet 51 and the inner cavity 53a of the male connector of the insertion end 55, the female connector 5b includes a female connector body (not labeled), the liquid inlet 52 located at one end of the female connector body, and the The socket end 56 at the other end of the main body of the female connector, and the female connector inner chamber 53b passing through the liquid inlet end 52 and the socket end 56, the insertion end 55 of the male connector 5a comes from the female connector The socket end 56 of the joint 5b is socketed with the inner cavity 53b of the female joint, and the inner cavity 53a of the male joint communicates with the inner cavity 53b of the female joint to form the infusion channel 53, and the male joint 5a and The female connector 5b is fixedly connected by ultrasonic welding. The elastic sealing plug 54 is installed in the inner cavity 53b of the female connector, and the second end surface 542 of the elastic sealing plug 54 abuts against the end surface of the insertion end 55 of the male connector 5a.
此外，所述公接头5a的插接端55的端面上围绕所述公接头内腔53a的端口凸设有环形限位部551，所述环形限位部551的内侧形成有限位空间(未标号)，所述弹性密封塞54的远离所述进液端52的一端容置且被限位于所述限位空间中。进一步地，所述公接头5a的插接端55的端面围绕所述环形限位部551凸设有环形配合部552，所述母接头5b的套接端56的端面设有与所述环形配合部552相配合的环形凹槽561。In addition, on the end surface of the plug-in end 55 of the male connector 5a, an annular limiting portion 551 protrudes around the port of the inner cavity 53a of the male connector, and a limiting space (not numbered) is formed inside the annular limiting portion 551 ), the end of the elastic sealing plug 54 away from the liquid inlet end 52 is accommodated and limited in the limiting space. Further, the end surface of the insertion end 55 of the male joint 5a is provided with an annular matching portion 552 around the annular limiting portion 551, and the end surface of the socket end 56 of the female joint 5b is provided with a ring matching portion 552. The annular groove 561 that fits the part 552.
以上仅为本实用新型的优选实施例，并非因此限制其专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。The above are only preferred embodiments of the present utility model, and are not intended to limit the scope of patents. Any equivalent structure or equivalent process transformation made by using the description of the utility model and the accompanying drawings is directly or indirectly used in other related technical fields. All are included in the scope of patent protection of the utility model in the same way.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420584217.7U CN204170209U (en) | 2014-10-10 | 2014-10-10 | Closed remaining needle |
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| CN201420584217.7U CN204170209U (en) | 2014-10-10 | 2014-10-10 | Closed remaining needle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237441A (en) * | 2016-08-31 | 2016-12-21 | 于燕 | A kind of multifunctional coaxial trocar sheath self-sealing venous indwelling device |
| CN112618846A (en) * | 2020-12-29 | 2021-04-09 | 深圳安特医疗股份有限公司 | Puncture outfit and infusion equipment |
-
2014
- 2014-10-10 CN CN201420584217.7U patent/CN204170209U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106237441A (en) * | 2016-08-31 | 2016-12-21 | 于燕 | A kind of multifunctional coaxial trocar sheath self-sealing venous indwelling device |
| CN106237441B (en) * | 2016-08-31 | 2019-08-09 | 于燕 | A kind of multifunctional coaxial outer tube self-sealing venous indwelling device |
| CN112618846A (en) * | 2020-12-29 | 2021-04-09 | 深圳安特医疗股份有限公司 | Puncture outfit and infusion equipment |
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Address after: 518000 Jinhui Road, Pingshan New District, Shenzhen, Guangdong Province, No. 18 Patentee after: SHENZHEN ANTMED Co.,Ltd. Address before: 518052 Jinhui Road, Pingshan New District, Shenzhen, Guangdong Province, No. 18 Patentee before: SHENZHEN ANT HI-TECH INDUSTRIAL CO.,LTD. |
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Granted publication date: 20150225 |