技术领域technical field
本发明涉及一种医疗器械，具体地说，涉及一种便携式药物输注装置的输注系统。The invention relates to a medical device, in particular to an infusion system of a portable medicine infusion device.
背景技术Background technique
药物流体输注器件是通过向患者体内持续注射药物，从而实现患者病症治疗的一种医疗器械装置。药物流体输注器件广泛的用于糖尿病的治疗，按照人体需要的剂量将胰岛素持续地输注到患者的皮下，以此来模拟胰腺的分泌功能从而保持患者血糖的稳定。药物流体通常储存在一个储药筒内，现有的药物流体输注器件通常是将药物流体由一段连接到泵体的导管输注到患者体内，在实际的使用过程中，佩戴导管通常不仅会对患者的活动等造成一定的妨碍，而且也不美观。A medical fluid infusion device is a medical device that continuously injects drugs into the patient's body to achieve the treatment of the patient's disease. Drug fluid infusion devices are widely used in the treatment of diabetes. Insulin is continuously infused into the patient's subcutaneous area according to the dose required by the human body, so as to simulate the secretory function of the pancreas and maintain the stability of the patient's blood sugar. The drug fluid is usually stored in a drug storage cartridge. The existing drug fluid infusion device usually infuses the drug fluid into the patient's body through a catheter connected to the pump body. In actual use, wearing the catheter usually not only Cause certain hindrance to patient's activity etc., and also not attractive in appearance.
针对上述药物流体输注器件的缺点，业界研制了一种将泵体直接通过医用胶布粘贴在患者身体上，通过植入人体皮下组织的留置软管输送药物流体的无导管药物流体输注器件。输药路径方面，先用注射器填充储药筒或使用预填充的储药筒，再将药物流体通过输注针或植入人体皮下的留置软管输送到患者体内。对于储药部件预填充的输注器件，需要预先存有药物流体的储药部件，然后将储药部件置入泵体内进行输注。储药部件中的药物流体输完后，必须更换新的储药部件，或直接更换整个输注器件，造成部分可持续使用的部件的浪费，且整件抛弃只适用于不含精密昂贵的电子元件的机械泵。另有一种直接将药物流体注入储药部件再通过与储药部件相连的输注针进行输注的器件，但要求使用专用的配套注药部件，不能使用市售的通用注射器，故而耗材多，成本高，也不利于注射泵的广泛应用。如何能在满足便携式输注泵小体积的必须要求上以最简洁的结构解决从进药到出药的流体通路问题，是优秀的便携式输注设备不可或缺的属性之一。In view of the shortcomings of the above-mentioned drug fluid infusion devices, the industry has developed a catheter-free drug fluid infusion device in which the pump body is directly pasted on the patient's body through medical adhesive tape, and the drug fluid is delivered through an indwelling tube implanted in the subcutaneous tissue of the human body. In terms of the delivery route, the drug storage tank is filled with a syringe or a pre-filled drug storage tank is used, and then the drug fluid is delivered to the patient through an infusion needle or an indwelling hose implanted under the human skin. For the infusion device in which the drug storage part is prefilled, the drug storage part is required to store the drug fluid in advance, and then the drug storage part is placed in the pump body for infusion. After the drug fluid in the drug storage part is infused, it must be replaced with a new drug storage part, or the entire infusion device must be replaced directly, resulting in the waste of some sustainable parts, and the whole piece is only suitable for non-precision and expensive electronic devices. Components of the mechanical pump. There is also a device that directly injects the drug fluid into the drug storage part and then infuses it through the infusion needle connected to the drug storage part, but requires the use of a special supporting drug injection part and cannot use a commercially available general-purpose syringe, so there are many consumables. The high cost is also unfavorable for the wide application of syringe pumps. How to solve the problem of the fluid path from drug inlet to drug outlet with the most concise structure while meeting the small volume requirements of portable infusion pumps is one of the indispensable attributes of excellent portable infusion devices.
发明内容Contents of the invention
为克服上述现有技术的不足，本发明提供一种便携式药物输注装置的输注系统，包括含有一个三通腔体的上壳，其特征在于，所述三通腔体可与注射器、储药筒和输注针连通；In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an infusion system of a portable drug infusion device, which includes an upper shell containing a three-way cavity, and is characterized in that the three-way cavity can be connected with a syringe, a storage The cartridge and the infusion needle are in communication;
一个可与所述上壳相结合的下壳；a lower shell combineable with said upper shell;
一个开有一孔的储药筒，所述储药筒设置在上壳内；a drug storage tube with a hole, the drug storage tube is arranged in the upper shell;
一根输注针。An infusion needle.
优选地，所述三通腔体用于连通注射器、储药筒和输注针的部件为三处弹性材料元件。Preferably, the parts of the three-way cavity used to communicate with the syringe, drug storage cartridge and infusion needle are three elastic material elements.
优选地，所述三通腔体用于连接储药筒的弹性材料元件上开有通孔，与储药筒上的通孔相连。Preferably, the elastic material member of the three-way cavity used for connecting to the drug storage cartridge has a through hole, which is connected to the through hole on the drug storage cartridge.
优选地，所述输注针为U型中空针。Preferably, the infusion needle is a U-shaped hollow needle.
优选地，所述U型中空针安装在一针座上，所述针座可动地安装在所述上壳上的针座容纳槽内。Preferably, the U-shaped hollow needle is installed on a needle holder, and the needle holder is movably installed in a needle holder receiving groove on the upper shell.
优选地，所述U型中空针的两端长短不一；短的一端穿刺弹性材料元件与所述三通腔体相连，用于使三通腔体内的药物流体能够进入U型中空针内腔；长的一端可穿过所述上壳和下壳刺入人体皮肤，使药物流体通过U型中空针输入人体内。Preferably, the two ends of the U-shaped hollow needle are of different lengths; the short end pierces the elastic material element and is connected to the three-way cavity, so that the drug fluid in the three-way cavity can enter the inner cavity of the U-shaped hollow needle ; The long end can penetrate the skin of the human body through the upper shell and the lower shell, so that the drug fluid can be input into the human body through the U-shaped hollow needle.
优选地，所述针座包括固针导柱，用于将所述U型中空针长端固定于针座；还包括含有凸缘的复腔导柱。Preferably, the needle holder includes a needle-fixing guide post for fixing the long end of the U-shaped hollow needle to the needle holder; it also includes a multi-cavity guide post with a flange.
所述上壳的针座容纳槽上有两个容纳腔，其中一柱形容纳腔用于容纳所述固针导柱；另一容纳腔用于容纳所述复腔导柱，并与所述复腔导柱上的凸缘配合避免所述针座从上壳上完全脱离。There are two accommodating cavities on the needle seat accommodating groove of the upper shell, one of which is a cylindrical accommodating cavity for accommodating the needle-fixing guide post; The cooperation of the flange on the multi-cavity guide post prevents the needle seat from completely detaching from the upper shell.
优选地，所述上壳上还设有一个带有微型卡勾的可滑动按键，所述微型卡勾可释放的结合所述复腔导柱，用于控制针座的位置。Preferably, the upper shell is further provided with a slidable button with a miniature hook, and the miniature hook is releasably combined with the multi-cavity guide post for controlling the position of the needle hub.
优选地，所述下壳上还设有一根导柱和一个可容输注针穿过的开孔容纳腔。Preferably, the lower shell is further provided with a guide post and an open accommodating cavity through which an infusion needle can pass.
优选地，所述下壳的导柱上套有一弹簧，与可滑动按键协同作用，用于在所述针座被按下后弹回所述针座使输注针穿回下壳内。Preferably, a spring is sleeved on the guide post of the lower case, which cooperates with the slidable button to bounce back the needle seat after the needle seat is pressed, so that the infusion needle can be passed back into the lower case.
优选地，所述复腔导柱包括两个腔体；Preferably, the multi-cavity guide post includes two cavities;
其中一腔用于容纳下壳上所述套有弹簧的导柱，复腔导柱上靠近此腔设有一凸缘，用于将所述复腔导柱卡住上壳使所述针座不从上壳上完全脱离；One of the cavities is used to accommodate the spring-covered guide post on the lower shell, and a flange is provided on the guide post of the multiple cavity near this cavity, which is used to clamp the guide post of the multiple cavity to the upper shell so that the needle hub does not completely detached from the upper shell;
另一腔用于配合可滑动按键上的微型卡勾，所述复腔导柱上还设有一缺口，该缺口可容所述微型卡勾脱出该腔。The other cavity is used to cooperate with the miniature hook on the slidable button, and a notch is also provided on the guide post of the multiple cavity, and the notch can allow the miniature hook to escape from the cavity.
优选地，本发明便携式输注装置的输注系统还包括一个可卸地安装于针座上的针座保护罩，其上设有一个卡栓；Preferably, the infusion system of the portable infusion device of the present invention further includes a needle hub protective cover detachably mounted on the needle hub, on which a latch is arranged;
所述上壳和所述针座的复腔导柱上各设有一个与所述卡栓配合的小孔；Each of the upper shell and the multi-cavity guide post of the needle seat is provided with a small hole that is matched with the latch;
初始状态两孔重合且卡栓插入两孔中，用于防止所述针座被不恰当地按下使得输注针穿出下壳。In the initial state, the two holes overlap and the latch is inserted into the two holes, which is used to prevent the needle seat from being pressed improperly so that the infusion needle can pass through the lower shell.
优选地，本发明便携式输注装置的输注系统还包括一个可卸地安装于所述相结合的上下壳的针座保护罩；Preferably, the infusion system of the portable infusion device of the present invention further includes a needle hub protective cover detachably mounted on the combined upper and lower shells;
所述针座保护罩上部罩设于针座上表面，下部罩设住所述下壳上输注针的出口，防止输注针穿出下壳。The upper part of the needle hub protective cover is set on the upper surface of the needle hub, and the lower part covers the outlet of the infusion needle on the lower shell to prevent the infusion needle from going out of the lower shell.
优选地，所述弹性材料元件为硅胶键。Preferably, the elastic material element is a silicone bond.
优选地，所述下壳上还开有通气用的微孔。Preferably, micropores for ventilation are also opened on the lower shell.
对比现有技术，本发明便携式药物输注装置的输注系统的有益效果体现在以下方面：首先，用设计在上壳上的一个三通腔体结构以及配合使用的弹性材料元件为药物流体从外部注射器到壳内的储药筒，从储药筒到输注针的流路提供了一个过渡通道，用普通的注射针即可实现为储药筒注药，并可以在储药筒中的药物流体使用完毕后重复多次注药；其次，上下壳上的结构与输注针所在的针座结构精巧配合，既保证了输注设备的紧凑性，又能让患者安全方便的控制输注针的位置；最后但不限于，安装于针座上的保护罩进一步增加了使用输注针时的安全性，其中一款保护罩还可帮助排出针腔中的空气。总而言之，本发明便携式输注装置的输注系统，兼具体积小，结构精巧，操作简易，保障安全的优势，同时满足了患者对便携式输注设备的紧凑性和性能卓越可靠的需求。Compared with the prior art, the beneficial effect of the infusion system of the portable drug infusion device of the present invention is reflected in the following aspects: First, a three-way cavity structure designed on the upper shell and an elastic material element used in conjunction are used to provide the drug fluid from From the external syringe to the drug storage cylinder in the shell, the flow path from the drug storage tank to the infusion needle provides a transition channel, and the ordinary injection needle can be used to inject medicine into the drug storage tank, and the drug in the drug storage tank can be After the fluid is used, the medicine is injected repeatedly; secondly, the structure on the upper and lower shells is exquisitely matched with the structure of the needle seat where the infusion needle is located, which not only ensures the compactness of the infusion equipment, but also allows the patient to control the infusion needle safely and conveniently. position; last but not limited to, protective shields mounted on the needle hub further increase the safety when using the infusion needle, one of which also helps to expel air from the needle cavity. All in all, the infusion system of the portable infusion device of the present invention has the advantages of small size, delicate structure, easy operation, and safety assurance, and at the same time meets the needs of patients for compactness and excellent and reliable performance of the portable infusion device.
附图说明Description of drawings
图1是本发明便携式药物输注装置的输注系统的上壳的立体示意图Fig. 1 is a three-dimensional schematic view of the upper shell of the infusion system of the portable drug infusion device of the present invention
图2是本发明便携式药物输注装置的输注系统储药筒的示意图Fig. 2 is a schematic diagram of the infusion system drug storage cartridge of the portable drug infusion device of the present invention
图3是本发明便携式药物输注装置的输注系统的上壳的俯视图Fig. 3 is a top view of the upper shell of the infusion system of the portable drug infusion device of the present invention
图4是本发明便携式药物输注装置的输注系统的上壳的局部放大俯视图Fig. 4 is a partially enlarged top view of the upper shell of the infusion system of the portable drug infusion device of the present invention
图5是本发明便携式药物输注装置的输注系统的上壳和针座的仰视图Fig. 5 is a bottom view of the upper shell and the needle holder of the infusion system of the portable drug infusion device of the present invention
图6是本发明便携式药物输注装置的输注系统的上壳的侧面局部剖视图Fig. 6 is a side partial cross-sectional view of the upper shell of the infusion system of the portable drug infusion device of the present invention
图7是本发明便携式药物输注装置的输注系统的局部剖视图Fig. 7 is a partial sectional view of the infusion system of the portable drug infusion device of the present invention
图8是本发明便携式药物输注装置的输注系统的针座和壳体的示意图Fig. 8 is a schematic diagram of the needle hub and housing of the infusion system of the portable drug infusion device of the present invention
图9是本发明便携式药物输注装置的输注系统下壳的示意图Fig. 9 is a schematic diagram of the lower shell of the infusion system of the portable drug infusion device of the present invention
图10是本发明便携式药物输注装置的输注系统针座保护罩的示意图1Fig. 10 is a schematic diagram of the needle hub protective cover of the infusion system of the portable drug infusion device of the present invention 1
图11是本发明便携式药物输注装置的输注系统针座保护罩的示意图2Fig. 11 is a schematic diagram 2 of the needle hub protective cover of the infusion system of the portable drug infusion device of the present invention
具体实施方式Detailed ways
为实现上述技术目的，使得本发明的特点及优势更加浅显易懂，结合下述实施例具体说明本发明的各实施方式。In order to achieve the above-mentioned technical objectives and make the features and advantages of the present invention more understandable, various implementation modes of the present invention will be specifically described in conjunction with the following examples.
参照图1和图2，给出一个本发明便携式输注装置的输注系统的上壳和储药筒的实施例。如图1所示，上壳1的容积大体分为两部分，即用于容纳针座的针座容纳槽11和用于容纳如图2所示的储药筒6和其他部件的剩余部分.这两部分在结构上是分开的，三通腔体就设置在上壳1上分开这两部分容积的结构内。所述三通腔体面向储药筒6的一面有一块凸起，一硅胶键102就嵌入在该凸起上，此硅胶键102是所述三通腔体用于连通输注系统中其它部件的三个元件之一，这些连接使得输注系统得以实现药物流体的灌入和输注。硅胶键102上设有一孔，如图2所示的储药筒6上也设有一孔61，将该两孔相通，实现储药筒6和三通腔体的连接。Referring to Fig. 1 and Fig. 2, an embodiment of the upper shell and drug storage cartridge of the infusion system of the portable infusion device of the present invention is given. As shown in FIG. 1 , the volume of the upper case 1 is roughly divided into two parts, namely the needle seat accommodating groove 11 for accommodating the needle seat and the remaining part for accommodating the drug storage cartridge 6 and other components as shown in FIG. 2 . These two parts are separated in structure, and the three-way cavity is arranged in the structure separating the volume of the two parts on the upper shell 1 . There is a protrusion on the side of the three-way cavity facing the drug storage cylinder 6, and a silicone key 102 is embedded on the protrusion. This silicone key 102 is used by the three-way cavity to communicate with other components in the infusion system. One of the three components of the infusion system, these connections allow the infusion and infusion of medicinal fluids. A hole is provided on the silica gel key 102, and a hole 61 is also provided on the drug storage cylinder 6 as shown in FIG.
参照图3至图5，给出一个含有针座容纳槽的上壳的实施例。如图3所述，上壳1的一端设有针座容纳槽11，另有一可滑动按键3设于上壳1侧面外壁上，靠近针座容纳槽11。如图4所示，所述针座容纳槽11有两个容纳腔，一个圆柱形容纳腔111用于容纳如图5所示的位于针座上的一固针导柱21；另一个形状不规则的容纳腔110用于容纳如图5所示的位于针座上的一复腔导柱22。如图4所示，上壳1上还设有一个硅胶键103，通过使U形针的短端刺穿该硅胶键103连通U形针的内腔与所述三通腔体。Referring to FIG. 3 to FIG. 5 , an embodiment of an upper case containing a needle holder receiving groove is given. As shown in FIG. 3 , one end of the upper case 1 is provided with a needle holder receiving groove 11 , and another slidable button 3 is provided on the outer wall of the side of the upper case 1 , close to the needle holder receiving groove 11 . As shown in Figure 4, the needle base housing groove 11 has two housing chambers, a cylindrical housing chamber 111 is used to accommodate a needle fixing guide post 21 located on the needle housing as shown in Figure 5; The regular accommodating cavity 110 is used for accommodating a multi-cavity guide post 22 on the needle hub as shown in FIG. 5 . As shown in FIG. 4 , a silicone key 103 is also provided on the upper shell 1 , and the inner cavity of the U-shaped needle is connected with the three-way cavity by piercing the short end of the U-shaped needle through the silicone key 103 .
参照图5至图9，给出一个针座、上壳及下壳上各结构如何相互配合的实施例。如图5所示，所述三通腔体10是一个形状不规则的药物流体的缓冲通道，设置在将上壳1内腔分隔成针座容纳槽11和剩余部分的结构内。上壳1侧壁上还设有一个带有微型卡勾31的可滑动按键3，所述微型卡勾31可释放地与所述复腔导柱22相结合，用于控制针座在初始位置与工作位置间的切换。如图5所示，针座上的复腔导柱22也有着不规则的形状并有两个腔，其中一腔23用于容纳如图7所示的位于下壳上的套有弹簧42的导柱41，另一腔24与可滑动按键3上的微型卡勾31配合，复腔导柱22上还设有一个如图7a所示的缺口221，所述微型卡勾31可以从该缺口脱出与其配合的腔24。Referring to Fig. 5 to Fig. 9, an example of how the structures on the needle base, the upper shell and the lower shell cooperate with each other is given. As shown in FIG. 5 , the three-way cavity 10 is an irregularly shaped buffer channel for the drug fluid, which is set in the structure that divides the inner cavity of the upper shell 1 into the needle holder receiving groove 11 and the rest. There is also a slidable button 3 with a miniature hook 31 on the side wall of the upper case 1, and the miniature hook 31 is releasably combined with the multi-cavity guide post 22, and is used to control the needle seat in the initial position. Switch between working positions. As shown in Figure 5, the multi-cavity guide post 22 on the needle hub also has an irregular shape and has two cavities, wherein a cavity 23 is used to accommodate the spring 42 on the lower shell as shown in Figure 7. Guide post 41, another cavity 24 cooperates with the miniature hook 31 on the slidable key 3, and a gap 221 as shown in Figure 7a is also provided on the multi-cavity guide post 22, and the miniature hook 31 can be inserted from the gap. Break out of cavity 24 that cooperates with it.
图6展示了连通三通腔体10与储药筒以及U形针短端的硅胶键102和103.当储药筒在上壳内设置完毕，如图1所示的上壳上的凸起内嵌入的硅胶键102压紧如图2所示的储药筒上微微隆起的部分以防泄漏，硅胶键102上的孔与图2中储药筒6上的孔61相通以实现药物流体从三通腔体10向储药筒6的通路或反向通路。Figure 6 shows the silicone keys 102 and 103 connecting the tee cavity 10 with the drug storage cylinder and the short end of the U-shaped needle. The embedded silicone key 102 compresses the slightly raised part of the drug storage cylinder as shown in Figure 2 to prevent leakage, and the hole on the silicone key 102 communicates with the hole 61 on the drug storage tube 6 in Figure 2 to realize the flow of the drug fluid from three Through the cavity body 10 to the passage or reverse passage of the drug storage cartridge 6.
参照图6和图7，给出一个药物流体从注射器通过三通腔体进入储药筒的实施例。如图6所示，另有一个硅胶键101设于上壳上靠近针座容纳槽11的不同于可滑动按键3所在外壁的另一侧外壁，连通所述三通腔体10和一个附图未展示的注射器。当储药筒需要灌药时，将装有药物流体的注射器的针头刺入硅胶键101，药物流体通过如图7所示的硅胶键101从注射器进入三通腔体10，然后再通过如图6所示的硅胶键102从三通腔体10进入储药筒。Referring to Fig. 6 and Fig. 7, an embodiment in which the drug fluid enters the drug storage cartridge from the syringe through the three-way cavity is given. As shown in Figure 6, another silicone key 101 is provided on the outer wall of the upper shell on the other side of the upper shell, which is close to the needle seat receiving groove 11 and is different from the outer wall where the slidable button 3 is located, and communicates with the three-way cavity 10 and a drawing. Syringes not shown. When the drug storage cylinder needs to be filled with medicine, the needle of the syringe containing the drug fluid is inserted into the silicone key 101, and the drug fluid enters the three-way cavity 10 from the syringe through the silicone key 101 shown in Figure 7, and then passes through the three-way cavity 10 as shown in Figure 7. The silica gel key 102 shown in 6 enters the drug storage cartridge from the tee cavity 10 .
参照图6和图7，硅胶键103连通三通腔体10和U形针的内腔。图7a展示了没有针座的情况下上下壳如何相连的剖视图，图7b展示了针座被按下在针座容纳槽内时针座上的U形针与上下壳的结构如何配合的剖视图。如图7b所示，当针座2被按下在上壳的针座容纳槽内时，U形针的短端51穿刺硅胶键103连通U形针内腔与三通腔体10，此时固定在针座2的固针导柱21上的U形针长端52穿过下壳上的容纳腔43上的出孔穿出下壳刺入人体皮肤。当需要输药时，储药筒中一个附图未展示的活塞被便携式输注装置的驱动单元推动，已由注射器注入储药筒6的药物流体通过图6中硅胶键102上的孔和图2中储药筒上的孔61流回到三通腔体10，再通过穿刺硅胶键103的U形针短端51流入U形针内腔，最后通过穿过如图7b所示的下壳上的开孔容纳腔43的U形针长端52进入人体。Referring to Fig. 6 and Fig. 7, the silicone key 103 communicates with the lumen of the tee cavity 10 and the U-shaped needle. Fig. 7a shows a cross-sectional view of how the upper and lower shells are connected without a needle hub, and Fig. 7b shows a cross-sectional view of how the U-shaped needle on the needle hub cooperates with the structure of the upper and lower shells when the needle hub is pressed into the needle hub accommodating groove. As shown in Figure 7b, when the needle holder 2 is pressed into the needle holder receiving groove of the upper shell, the short end 51 of the U-shaped needle pierces the silicone key 103 to communicate with the inner cavity of the U-shaped needle and the three-way cavity 10, at this time The long end 52 of the U-shaped needle fixed on the needle-fixing guide post 21 of the needle base 2 passes through the outlet hole on the accommodating chamber 43 on the lower shell, passes through the lower shell and penetrates into human skin. When infusion of medicine is required, a piston not shown in the drug storage cartridge is pushed by the drive unit of the portable infusion device, and the drug fluid that has been injected into the drug storage cartridge 6 by the syringe passes through the hole on the silicone key 102 in Figure 6 and Figure 2 The hole 61 on the middle storage cartridge flows back to the three-way cavity 10, and then flows into the inner chamber of the U-shaped needle through the short end 51 of the U-shaped needle piercing the silicone key 103, and finally passes through the lower shell as shown in Figure 7b. The U-shaped needle long end 52 of the perforated accommodating cavity 43 enters the human body.
如图7所示，从侧面视角看，下壳4上套有弹簧42的柱体41在上下壳相连时位于U形针短端51和长端52之间，用于在针座2被按下在针座容纳槽11时，在如图5和图6所示的可滑动按键3配合下将针座2从针座容纳槽11中推出。As shown in Figure 7, viewed from a side view, the cylinder 41 covered with the spring 42 on the lower shell 4 is located between the short end 51 and the long end 52 of the U-shaped needle when the upper and lower shells are connected, and is used for pressing the needle holder 2. When it is in the needle holder receiving groove 11, the needle holder 2 is pushed out from the needle holder receiving groove 11 under the cooperation of the slidable button 3 as shown in FIG. 5 and FIG. 6 .
图8提供了针座2以及针座2上的U形针与上下壳配合的另一视角。如图8a所示，针座2的复腔导柱22上还设有一缺口221和和另一圆形缺口222，缺口221用于让如图5所示的可滑动按键3的微型卡勾31从腔24中滑出以使针座2从针座容纳腔中弹回，圆形缺口222与一种针座保护罩配合，下文详述。且如图8a所示，复腔导柱22在靠近腔23处还设有一凸缘223，用于将复腔导柱22卡在上壳上使针座2如图8b所示处于初始位置时不至于从上壳上完全脱出。当针座2被按下在针座容纳槽内且U形针长端52如图8c所示穿出下壳，可滑动按键3的微型卡勾31卡进复腔导柱22上的腔24内将针座2固定在工作位置，令U形针长端52保持在下壳之外。此时，下壳上导柱41上的弹簧42如图7b所示处于压缩状态。FIG. 8 provides another view of the needle hub 2 and the U-shaped needle on the needle hub 2 cooperating with the upper and lower shells. As shown in Figure 8a, a notch 221 and another circular notch 222 are also provided on the multi-cavity guide post 22 of the needle hub 2, and the notch 221 is used to allow the miniature hook 31 of the slidable button 3 as shown in Figure 5 Sliding out from the cavity 24 to make the needle hub 2 bounce back from the needle hub accommodating cavity, the circular notch 222 cooperates with a needle hub protective cover, which will be described in detail below. And as shown in Fig. 8a, the multiple cavity guide post 22 is also provided with a flange 223 near the cavity 23, which is used to clamp the multiple cavity guide post 22 on the upper shell so that the needle holder 2 is in the initial position as shown in Fig. 8b It will not come off completely from the upper shell. When the needle holder 2 is pressed into the needle holder receiving groove and the long end 52 of the U-shaped needle passes through the lower shell as shown in Figure 8c, the miniature hook 31 of the sliding button 3 snaps into the cavity 24 on the multiple cavity guide post 22 The needle seat 2 is fixed in the working position, so that the long end 52 of the U-shaped needle remains outside the lower shell. At this time, the spring 42 on the upper guide post 41 of the lower case is in a compressed state as shown in FIG. 7b.
参照图5、图7、图8，当需要抽回U形针时，滑动可滑动按键3，使微型卡勾31对准复腔导柱22上的缺口221，则微型卡勾31从腔24中滑出，复腔导柱22不再被微型卡勾31卡住，导柱41上的弹簧42弹力释放，使针座2被下壳上的导柱41推出针座容纳槽回到其初始位置，U形针长端52则被收回下壳之内。Referring to Fig. 5, Fig. 7 and Fig. 8, when the U-shaped needle needs to be withdrawn, slide the slidable button 3 so that the miniature hook 31 is aligned with the notch 221 on the guide post 22 of the compound chamber, and then the miniature hook 31 is released from the chamber 24. slide out, the guide post 22 of the multiple cavity is no longer blocked by the miniature hook 31, and the spring 42 on the guide post 41 is released, so that the needle holder 2 is pushed out of the needle holder receiving groove by the guide post 41 on the lower shell and returns to its initial state. position, the long end 52 of the U-shaped needle is retracted in the lower shell.
参照图9，下壳4上还设有三个通气用的透气孔44，用于保持输注过程中壳体内的气压平衡。Referring to FIG. 9 , the lower shell 4 is also provided with three ventilation holes 44 for ventilation, which are used to maintain the air pressure balance in the shell during infusion.
参照图10和图8，给出一个本发明针座保护罩的实施例。如图10a所示，针座保护罩7上设有一卡栓71。如图8b和8c所示上壳1有一孔12，如图8a所示复腔导柱22上有一圆形缺口222，针座2处于初始状态时该两孔重合。当卡栓71插入该两孔中，针座保护罩7卡在针座2和上壳1的针座容纳槽11之间，如图10b所示，这样使针座2被固定在其初始位置，不会被不恰当地按下。Referring to Fig. 10 and Fig. 8, an embodiment of the needle hub protective cover of the present invention is given. As shown in FIG. 10 a , a latch 71 is provided on the needle hub protective cover 7 . As shown in Figures 8b and 8c, the upper shell 1 has a hole 12, and as shown in Figure 8a, there is a circular notch 222 on the multi-cavity guide post 22, and the two holes coincide when the needle holder 2 is in the initial state. When the latch 71 is inserted into the two holes, the needle holder protective cover 7 is stuck between the needle holder 2 and the needle holder receiving groove 11 of the upper shell 1, as shown in Figure 10b, so that the needle holder 2 is fixed at its initial position , will not be pressed inappropriately.
参照图11，7和8，给出一个本发明另一种针座保护罩的实施例。如图11a所示，针座保护罩8包括一个顶壳81，一个底壳82和两根卡杆83。顶壳81罩住针座2上沿，底壳82挡住下壳上U形针长端52的出孔，两根卡杆83卡住上壳1。向人体输药前，通常应先将输注针内腔的空气排出，此过程称为充盈。填充储药筒后，按压针座保护罩8的顶壳81，针座2会略微向下而不是被完全按下，因为底壳82挡住了U形针长端52的出口。随着针座2略微向下的动作，如图8所示的U形针短端51穿刺硅胶键103，于是U形针内腔连通三通腔体10，使药物流体从三通腔体10充满U形针整个内腔内。但由于底壳82挡住了U形针长端52的出口，U形针长端52并不会穿出下壳刺入人体，这就在输药前完成了充盈的过程。Referring to Figures 11, 7 and 8, an embodiment of another needle hub protective cover of the present invention is given. As shown in FIG. 11 a , the needle hub protective cover 8 includes a top shell 81 , a bottom shell 82 and two locking rods 83 . The top shell 81 covers the upper edge of the needle holder 2 , the bottom shell 82 blocks the exit hole of the long end 52 of the U-shaped needle on the lower shell, and the upper shell 1 is clamped by two locking rods 83 . Before infusing medicine into the human body, the air in the inner cavity of the infusion needle should usually be expelled first, and this process is called filling. After filling the cartridge, press the top shell 81 of the needle hub protection cover 8, the needle hub 2 will be slightly downward instead of being fully pressed, because the bottom shell 82 blocks the outlet of the long end 52 of the U-shaped needle. With the slight downward movement of the needle holder 2, the short end 51 of the U-shaped needle pierces the silicone key 103 as shown in FIG. Fill the entire lumen of the U-shaped needle. But because the bottom shell 82 blocks the outlet of the U-shaped needle long end 52, the U-shaped needle long end 52 can not pass through the lower shell and penetrate into the human body, and this has just completed the process of filling before the drug delivery.
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664740.4ACN106110445B (en) | 2016-08-12 | 2016-08-12 | Infusion system of a portable drug infusion device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664740.4ACN106110445B (en) | 2016-08-12 | 2016-08-12 | Infusion system of a portable drug infusion device |
| Publication Number | Publication Date |
|---|---|
| CN106110445A CN106110445A (en) | 2016-11-16 |
| CN106110445Btrue CN106110445B (en) | 2019-12-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610664740.4AActiveCN106110445B (en) | 2016-08-12 | 2016-08-12 | Infusion system of a portable drug infusion device |
| Country | Link |
|---|---|
| CN (1) | CN106110445B (en) |
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