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Publication numberCN102512726 A
Publication typeApplication
Application numberCN 201210012879
Publication date27 Jun 2012
Filing date17 Jan 2012
Priority date17 Jan 2012
Also published asCN102512726B
Publication number201210012879.2, CN 102512726 A, CN 102512726A, CN 201210012879, CN-A-102512726, CN102512726 A, CN102512726A, CN201210012879, CN201210012879.2
Inventors徐志成, 田培华
Applicant南京扬子医用制品有限公司, 徐志成, 田培华
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Microinfusion pump
CN 102512726 A
Abstract
The invention discloses a microinfusion pump, which comprises a pump head, a liquid storage bag, a silica gel bag, an infusion conduit and a pressure control valve, wherein one end of the silica gel bag is communicated with the liquid storage bag, and the other end of the silica gel bag is communicated with the infusion conduit; a driving piece which can extrude the silica gel bag regularly, so that air pressure in the silica gel bag is changed is arranged on the pump head; the silica gel bag is communicated with the infusion conduit by the pressure control valve which is resistant to back flow and direct flow; the pressure control valve comprises an inner joint, an outer joint and a valve plate; a water inlet channel is formed on the inner joint and is communicated with the silica gel bag; a water outlet channel is formed on the outer joint and is communicated with the infusion conduit; the inner joint is hermetically connected with the outer joint, and an accommodating space which is used for communicating the water inlet channel and the water outlet channel is formed between the inner joint and the outer joint; the valve plate is made of an elastic material, and a water outlet hole is formed in the valve plate; and the valve plate is positioned in the accommodating space, so that the water inlet channel is separated from the water outlet channel. According to the microinfusion pump, the valve plate has a self-sealing capacity, so that situations of uncontrolled infusion and backflow of blood can be prevented under the pressure action of the pump head.
Claims(10)  translated from Chinese
1. 一种微量输液泵,包括泵头、储液袋、硅胶囊以及输液导管;泵头上设有可规律性挤压硅胶囊,使得硅胶囊中气压产生变化的驱动件;储液袋上设有出水口,硅胶囊一端与储液袋的出水口相连通,另一端连通输液导管;其特征是,还包括压力控制阀;硅胶囊与输液导管之间通过压力控制阀相连通;压力控制阀包括内接头、外接头和阀片;内接头上设有进水通道,进水通道的进水口连通硅胶囊;外接头上设有出水通道,出水通道的出水口连通输液导管;内接头与外接头之间密封连接,并在内接头与外接头之间形成一个连通进水通道和出水通道的容置空间;阀片采用弹性材料制成,其上设有出水孔;阀片位于上述容置空间内,且阀片平面垂直于进水通道与出水通道的轴向,将进水通道与出水通道分隔开来。 A micro-infusion pump, including the head, liquid pouch, silicone capsules and infusion catheter; regularity squeeze pump head features a silicon capsule, making silicon capsules produced changes in air pressure drive member; a reservoir bag has a water outlet, one end of the capsule and the silicon reservoir bag outlet in communication, and the other end communicating infusion catheter; characterized by further comprising a pressure control valve; between the silicon capsule in communication with the infusion catheter through a pressure control valve; pressure control valve includes an inner connector, external fittings and valves; provided water channels within the joint capsule water intake channel connectivity silicon; external head has a water channel, the water outlet channel connectivity infusion catheter; within the joint and tight connection between the outer terminal, and the joint between the inner and outer connector forming an inlet passage and outlet passage communicating the receiving space; a valve sheet made of an elastic material, which is provided with the outlet hole; valve located in said container within the housing space, and a plane perpendicular to the valve inlet channel and outlet channel axially, the inlet channel and outlet channel separated.
2.根据权利要求1所述的微量输液泵,其特征是,还包括外壳;压力控制阀中内接头与外接头的连接处外周设有卡口,压力控制阀通过卡口卡接固定于外壳上。 The micro-infusion pump according to claim 1, characterized in that, further comprising a housing; a pressure control valve is connected at the outer periphery of the connector and the outer terminal is provided with a bayonet, the pressure control valve by a bayonet snap fixed to the housing on.
3.根据权利要求1所述的微量输液泵,其特征是,还包括弹性元件;阀片一面与外接头之间通过弹性元件相连接,另一面抵住内接头中进水通道的出水口。 3. The micro-infusion pump according to claim 1, characterized by further comprising an elastic member; between the outer side of the valve by an elastic member and the connector is connected, the other side of the joint against water channel outlet.
4.根据权利要求1或2或3所述的微量输液泵,其特征是,内接头与外接头之间为卡接,外接头卡在内接头内,且卡接处为密封连接。 4. The micro-infusion pump 1 or 2 or as claimed in claim 3, characterized in that the joint between the inner and the outer connector is a snap, the card connector including an outer connector, and is sealed at the snap connection.
5.根据权利要求1或2或3所述的微量输液泵,其特征是,阀片上的出水孔为一字形, 出水孔的长度范围为:0. 01mm-30mm。 The micro-infusion pump 1 or 2 or as claimed in claim 3, characterized in that the valve outlet hole is on-line, length of the water holes is:. 0 01mm-30mm.
6.根据权利要求1或2或3所述的微量输液泵,其特征是,阀片上的出水孔为十字形。 The micro-infusion pump 1 or 2 or as claimed in claim 3, characterized in that the valve outlet hole on the cross-shaped.
7.根据权利要求1或2或3所述的微量输液泵,其特征是,阀片上的出水孔为十字形, 出水孔的数量为1个以上。 7. The micro-infusion pump 1 or 2 or as claimed in claim 3, characterized in that the valve outlet hole on the cross-shaped, the number of water holes is one or more.
8.根据权利要求3所述的微量输液泵,其特征是,所述弹性元件为弹簧。 8. The micro infusion pump according to claim 3, characterized in that said elastic element is a spring.
9.根据权利要求1或2或3所述的微量输液泵,其特征是,阀片采用的弹性材料为医用硅胶或者高弹PVC材料。 9. The micro-infusion pump 1 or 2 or as claimed in claim 3, characterized in that the resilient material of the valve sheet used for medical silicone or high-elastic PVC material.
10.根据权利要求1或2或3所述的微量输液泵,其特征是,阀片的厚度范围为: 0. 001mm-20mm。 10. The micro-infusion pump 1 or 2 or as claimed in claim 3, characterized in that the thickness range of the valve is: 0. 001mm-20mm.
Description  translated from Chinese

一种微量输液泵技术领域[0001] 本发明涉及医疗器械中的微量蠕动泵技术领域,特别是一种不受重力影响且可防止回血的微量输液泵。 One kind of micro-infusion pump FIELD [0001] The present invention relates to medical devices in the field of micro-peristaltic pump technology, particularly a not affected by gravity and prevents micro-infusion pump blood back. 背景技术[0002] 现有技术中使用的医用微量输液蠕动泵,大都是由输液控制装置(简称泵头)及输液袋组成,泵头通过控制与输液袋相连的出水管路进而控制输液,其工作原理为:在泵头与输液袋结合时,泵头上的左阀片及右阀片将压在输液袋的硅胶囊上,使得储液袋内的液体与出水端部相连;使用时,通过控制泵头上左阀片、右阀片及主推片有规律的运动,在硅胶囊内产生压力从而达到输液的目的。 [0002] Medical infusion trace peristaltic pump used in the prior art, mostly by infusion control means (referred to as the pump head) and the composition of the infusion bag, the infusion pump head turn control by controlling the water discharge pipe connected to an infusion bag, which works as follows: when the pump head and infusion bags combine pump valve head left and right valve on the pressure in the infusion bag silicon capsule so that the liquid and the water reservoir bag ends connected; use, By controlling the valve pump head left and right valves and main push piece of regular exercise on a silica gel capsule generate pressure so as to achieve the purpose of the infusion. 但是在使用时泵头与输液袋相连时经常会发生装夹不到位,或中途脱落的情况,进而导致泵头的阀片不能有效的阻止输液袋内的水流动,在当输液袋内有高于人体或低于人体的压力时,将发生输液失控或回血,从而产生危险。 However, the use often occur when connected to the pump head and infusion bags clamped in place, or situation halfway off, leading to the pump head of the valve can not effectively prevent the flow of water infusion bag in the infusion bag when there are high When the human body at or below the pressure will occur out of control or return to the blood transfusion, resulting in danger. 因此需要一种能够不受重力影响的泵用输液袋,以防止输液失控和回血的情况。 Hence the need for a pump can not be affected by gravity infusion bag to prevent loss of control and back to the blood transfusion. 发明内容[0003] 本发明的目的是提供一种微量输液泵,其通过在输液袋上安装压力控制阀,可阻止在重力或人体血液压力作用下产生的液体的流动,保证正常的输液。 SUMMARY OF THE INVENTION [0003] The object of the present invention is to provide a micro-infusion pump, which by installing a pressure control valve on the infusion bag, may block the flow of liquid under gravity or pressure generated by the human blood, to ensure the normal infusion. [0004] 为实现上述目的,本发明采取的技术方案为:一种微量输液泵,包括泵头、储液袋、 硅胶囊以及输液导管;泵头上设有可规律性挤压硅胶囊,使得硅胶囊中气压产生变化的驱动件;储液袋上设有出水口,硅胶囊一端与储液袋的出水口相连通,另一端连通输液导管; 还包括压力控制阀;硅胶囊与输液导管之间通过压力控制阀相连通;压力控制阀包括内接头、外接头和阀片;内接头上设有进水通道,进水通道的进水口连通硅胶囊;外接头上设有出水通道,出水通道的出水口连通输液导管;内接头与外接头之间密封连接,并在内接头与外接头之间形成一个连通进水通道和出水通道的容置空间;阀片采用弹性材料制成,其上设有出水孔;阀片位于上述容置空间内,且阀片平面垂直于进水通道与出水通道的轴向,将进水通道与出水通道分隔开来。 [0004] To achieve the above object, the present invention adopts the technical solutions for: one micro-infusion pump, including the head, the liquid storing pack, the capsule and the infusion catheter silicon; pump head features a regular extruded silicone capsules, such that silicon capsules produce changes in barometric pressure drive member; outlet offers silicon capsule on one end of the reservoir bag reservoir bags connected to the outlet pass, and the other end connectivity infusion catheter; also includes a pressure control valve; silicone capsules and infusion catheters Through inter-connected through a pressure control valve; a pressure control valve includes an inner connector, external fittings and valves; provided water channels within the joint capsule water intake channel connectivity silicon; external head has a water channel, water channel The outlet conduit communicates infusion; sealed connection between the inner terminal and the outer terminal, and the joint between the inner and outer connector forming an inlet passage and outlet passage communicating the receiving space; a valve sheet made of an elastic material, on which provided with water holes; valve plate is positioned within said receiving space, and a plane perpendicular to the inlet valve and outlet passage axial passageway, the inlet channel and outlet channel separated. [0005] 进一步的,本发明还包括外壳,输液袋、泵头、硅胶囊皆置于外壳内;压力控制阀中内接头与外接头的连接处外周设有卡口,压力控制阀通过卡口卡接固定于外壳上,使得内接头位于外壳内,外接头的一部分位于外壳外,在使用过程中不会发生移位,避免对输液造成影响。 [0005] Further, the present invention further includes a housing, an infusion bag, pump head, the silicon capsule are disposed within the housing; the pressure control valve is connected at the outer periphery of the connector and the outer terminal is provided with a bayonet, the pressure control valve by a bayonet snap fixed to the housing, such that the connector is located within the housing, the outer terminal portion located outside of the housing, does not occur in the course of a shift, to avoid the impact on the infusion. [0006] 优选的,本发明中内接头与外接头之间为卡接,外接头卡在内接头内,且卡接处为密封连接,使得容置空间对外密封,药液不会从内接头与外接头的连接处渗出。 Between [0006] Preferably, the inner and outer joint invention of snap joints, including internal and external connector card connector, and snap at the sealed connection, making space for accommodating external sealing liquid is not from within the joint connection with the outer terminal bleeding. [0007] 本发明在应用时,首先用注射器通过输液导管向与还未与泵头结合的储液袋内注入药液,注完后将泵头安装到外壳内,使得泵头上的驱动件动作时能够正常驱动硅胶囊内的药水往内接头的进水通道流;然后开始输液工作。 [0007] In the application of the present invention, first with a syringe and the reservoir bag and the pump head has not been bound into the liquid through the infusion catheter, after the injection pump head to the inner housing, such that the pump head of the drive member during normal driving operation silicone sac within the joint solution to the water channel flow; and then begin the infusion work. [0008] 作为一种改进,本发明还包括弹性元件;阀片一面与外接头之间通过弹性元件相连接,另一面抵住内接头中进水通道的出水口。 [0008] As a refinement, the present invention further includes an elastic member; valve side by a resilient member connected between the outer terminal and, on the other side against the inner joint influent passage outlet. 优选的,上述弹性元件为弹簧,也可以是弹片或者其他形式,只要能够实现抵在内接头的进水通道出水口上即可,使得药液只能通过阀片上的出水孔通过。 Preferably, the elastic element is a spring, may be shrapnel or other form, as long as possible to contact the inner joint on the outlet to the inlet channel, so that the liquid only through the outlet hole on the valve sheet via. 这种方式下,阀片无需被内接头和外接头卡死,阀片依靠弹簧的弹力抵住内接头的进水通道出口。 In this way, the valve need not be dead within the card connector and the outer connector, the valve relies on spring force against the inner terminal passage of the water outlet. [0009] 进一步的,本发明中阀片上的出水孔可为一字形、或者十字形;如果为十字形,则出水孔的数量可以设置一个,也可以有多个,密布于阀片上;阀片上出水孔的长度是影响阀片自封能力的一个因素,本发明中,优选为当出水孔数量为一个时,一字形出水孔的长度范围为:0. 01mm-30mm ,十字形出水孔交叉的两条臂各自的长度范围为:0. 01mm-30mm ;出水孔为多个十字形时,十字形中交叉的两条臂各自的长度范围是:0. 01-30mm。 [0009] Further, the present invention, the water hole on the valve can be a shape, or a cross; if the cross, then the water can set a number of holes, there can be many, clouds on the valves; the valve the length of the outlet hole is a factor affecting the ability of the self-sealing valve, the present invention, it is preferable for a number of holes when the water, the length of the in-line water hole is:. 0 01mm-30mm, the two cross-shaped water hole intersecting respective lengths of arms ranges: 0 01mm-30mm; when the water hole for multiple cross, cross two cross arms length of each range is:. 0 01-30mm.. [0010] 由于阀片采用弹性材料制成,所以出水孔具有自封能力,在泵头压力较大时会自动打开,使得药液能够正常从内接头输出到外接头进而进入输液导管;而当阀片两面的压力均较小时,阀片保持自封不会漏液。 [0010] Because the valve is made of an elastic material, so the water hole with a self-sealing capability, it will automatically open when the pressure in the larger pump head, making normal output from the liquid inside the joint to the outside and then into the infusion catheter connector; and when the valve both sides of the pressure plate than those hours, the valve does not maintain self-styled leakage. [0011] 优选的,本发明中阀片采用的弹性材料为医用硅胶或者高弹PVC材料,或者其他弹性材料,材料弹性越好,则阀片的自封能力越好,其次,阀片的厚度也是影响阀片自封能力的一个因素,本发明中阀片的厚度范围为:0. 001mm-20mm,包括叠层厚度、组合厚度都在这个范围内。 [0011] Preferably, the elastic material of the present invention, the valve used for medical silicone or high-elastic PVC material, or other elastic material, the elastic material, the better, the better the self-sealing capability of the valve, secondly, the thickness of the valve is One factor that affects the ability of the self-sealing valve, the scope of the present invention, the thickness of the valve is:. 0 001mm-20mm, including lamination thickness, the combined thickness are within this range. [0012] 本发明的有益效果为:设置了抗逆流自封阀,其中的内接头、外接头阀片在保证能够正常输液的同时,由于阀片上的出水孔具有自封能力,同时在泵头压力的作用下,可以避免重力或其他压力作用下造成回血或者输液失控的情况。 [0012] Advantageous Effects of the present invention are as follows: self-sealing anti-reflux valve is provided, wherein the inner terminal, the outer terminal valve in the same time to ensure the normal infusion, due to the water hole of the valve sheet having a self-sealing capability, while the pressure in the pump head Under the action, resulting in the return of blood transfusion or avoid the situation out of control under gravity or other pressure. 本发明中通过合理选择阀片的材料、厚度,以及阀片上出水孔的长度,使得阀片的自封能力较好,为输液者的安全提供了保障。 The present invention is a reasonable choice by the valve material, thickness and length of the water hole on the valve, the valve so that the self-proclaimed ability is better, for the safety of infusion to provide a guarantee. 附图说明[0013] 图1所示为本发明的具体实施例结构示意图; 图2所示为图1中放大的抗逆流自封阀结构示意图; 图3所示为抗逆流自封阀的另一种形式结构示意图; 图4所示为阀片上设置出水孔的第一种形式;图5所示为阀片上设置出水孔的第二种形式; 图6所示为阀片上设置出水孔的第三种形式。 Another self-appointed for the anti-reflux valve shown in FIG. 3; BRIEF DESCRIPTION [0013] Figure 1 shows a schematic structure of a specific example of the invention embodiment; Figure 2 shows the self-styled anti-reflux valve structure in Figure 1 is an enlarged schematic view of water hole is provided on the third valve shown in FIG. 6; in the form of a schematic structural view; Figure 4 shows the outlet hole is provided on the first form of the valve; Figure 5 shows the outlet hole is provided on the second form of the valve sheet form. 具体实施方式[0014] 为使本发明的内容更加明显易懂,以下结合附图和具体实施方式作进一步描述。 DETAILED DESCRIPTION [0014] For the present invention will become apparent from the accompanying drawings and the following specific embodiments will be further described. [0015] 如图1所示,本发明包括外壳3,位于外壳3之内的泵头1、储液袋2、硅胶囊4以及输液导管6 ;硅胶囊4位于泵头1与储液袋2之间;泵头1上设有可规律性挤压硅胶囊4,使得硅胶囊4中气压产生变化的驱动件;泵头1为现有技术,驱动件可以为图1中所示的主推片11和位于主推片11两边的左阀片12和右阀片13 ;储液袋2上设有出水口,硅胶囊4 一端与储液袋的出水口相连通,另一端连通输液导管6 ;还包括压力控制阀5 ;硅胶囊4与输液导6管之间通过压力控制阀5相连通;压力控制阀5包括内接头51、外接头52和阀片53 ;内接头51上设有进水通道,进水通道的进水口连通硅胶囊4 ;外接头52上设有出水通道,出水通道的出水口连通输液导管6 ;内接头51与外接头52之间密封连接,并在内接头51与外接头52之间形成一个连通进水通道和出水通道的容置空间55,用于容置从内接头51的进水通道通过阀片到达外接头的药液;阀片53采用弹性材料制成,其上设有出水孔531 ;阀片53位于上述容置空间55内,且阀片53平面垂直于进水通道与出水通道的轴向,将进水通道与出水通道分隔开来。 [0015] shown in Figure 1, the present invention includes a housing 3, 3 is located within the pump head housing 1, the liquid storing bag 2, 4, and silicon capsules infusion catheter 6; silicon capsule 4 located in the pump head 1 and the liquid storing pack 2 1 may be provided with pump head regularity extruded silicon capsule 4, so that the silicon capsule changes gas pressure in the drive member 4;; between the pump head 1 is the prior art, the drive member may be a main push piece shown in Fig. 1 11 and 11 located on both sides of the main push valves 12 pieces left and right valves 13; reservoir bag has 2 outlets, one end of the silicon liquid capsules four bags outlet communicates the other end connectivity infusion catheter 6; also includes a pressure control valve 5; 4 between the silicon capsule infusion guide 6 in communication through a pressure control valve 5; pressure control valve 5 comprises an inner connector 51, the external connector 52 and the valve sheet 53; provided with inlet channel 51 on the inner fitting , water intake channel of communication with the silicon capsule 4; external connector 52 is provided with the water channel, the water outlet channel connectivity infusion catheter 6; 51 within the joint sealing connection between the outer connector 52, and the inner and outer joints 51 forming an inlet passage and outlet passage communicating the receiving space 52 between the connector 55, for receiving water from the connector reaches the liquid passage 51 through the outer terminal of the valve; valve plate 53 made of an elastic material, which is provided with the water outlet 531; the valve 53 positioned in the accommodating space 55, and the valve plate 53 is perpendicular to the plane of the axial inlet channel and outlet channel, the inlet channel and outlet channel separated. [0016] 如图1所示,本发明中内接头51与外接头52之间为卡接,外接头52卡在内接头51内,且卡接处为密封连接,使得容置空间55对外密封,药液不会从内接头与外接头的连接处渗出。 [0016] 1, within the present invention, the joint 51 between the outer terminal 52 and the access to the card, the card including the external connector 52 fitting 51, and is sealed at the snap connection, the receiving space 55 such that the external seal , the liquid will not leak out of the inner connector and the outer connection joint. 内接头51与外接头52的连接处外周设有卡口,压力控制阀5通过卡口卡接固定于外壳3上,使得内接头51位于外壳3内,外接头52的一部分位于外壳3外,在使用过程中避免因移位对输液造成影响。 An inner joint 51 and the outer terminal 52 is connected is provided at the outer periphery of the bayonet, the pressure control valve 5 by a bayonet snap fixed to the housing 3, such that the inner terminal 51 is located within the housing 3, 3 outside the outer terminal portion 52 is located in the housing, Avoid during use due to displacement affect infusion. [0017] 本发明中阀片53的设置可以有多种形式,如图2中,阀片53被卡死在内接头51 与外接头52之间,或者如图3所示阀片53通过弹性元件如弹簧M连接外接头52,在弹簧54的作用力下阀片53能够抵在内接头51的进水通道出水口上,使得药液只能通过阀片53 上的出水孔通过。 [0017] The present invention is provided in the valve sheet 53 may take many forms, as shown in Figure 2, the valve 53 is stuck between the inner 51 and the outer terminal connector 52, or valve 53 shown in FIG. 3 by the elastic element such as a spring connected to the external connector M 52, under the force of the spring 54 the valve 53 can abut the inner passage 51 of the inlet fitting on the outlet, such that liquid only through the outlet hole 53 through the valve. [0018] 本发明中,由于阀片采用弹性材料制成,所以出水孔具有自封能力,在泵头压力较大时会自动打开,药液能够正常从内接头输出到外接头进而进入输液导管;而当阀片两面的压力均较小时,阀片保持自封不会漏液。 [0018] In the present invention, since the valve sheet made of an elastic material, so that the water hole having a self-sealing capability, large pressure will open automatically in the pump head, the liquid can be properly output to the outside from the connector fitting and thence into the fluid conduit; And when the pressure is on both sides of the valve compared hour, will not leak valve to maintain the self-styled. 影响阀片自封能力的因素主要有阀片的材料、阀片的厚度、出水孔的长度,阀片的材料优选为医用硅胶或者高弹PVC材料,材料弹性越好, 则阀片的自封能力越好;本发明优选阀片的厚度范围为:0. 001mm-20mm,包括组合厚度,多层叠合厚度。 Factors that affect the ability of self-sealing valve has a valve main material, the thickness of the valve plate, the length of the water hole, the valve plate material is preferably highly elastic medical silicone or PVC material, elastic material, the better, the self-sealing capability of the valve sheet Good; thickness range of the present invention is preferably the valve is: 0 001mm-20mm, including the combined thickness of the multilayer build thickness. [0019] 结合图4至图6,本发明中阀片53上的出水孔531可为一字形,如图4,或者为十字形,如图5和图6 ;如果为十字形,则出水孔的数量可以设置一个,也可以有多个,密布于阀片上,如图6所示;阀片上出水孔的长度优选为:当出水孔数量为一个时,一字形出水孔的长度范围为:0. 01mm-30mm,十字形出水孔交叉的两条臂各自的长度范围为:0. 01mm-30mm ; 出水孔为多个十字形时,十字形中交叉的两条臂各自的长度范围是:0. 01mm-30mm。 [0019] Figures 4 to 6 in combination, the present invention, the outlet hole 531 on the valve 53 may be a shape, as shown in Figure 4, or cross-shaped, as shown in Figure 5 and Figure 6; if the cross-shaped, the water hole a number may be provided, there can be many, clouds on the valve, as shown in Figure 6; the length of the outlet hole of the valve sheet is preferably as follows: When the number of the outlet hole is a, the length of the in-line water hole is: 0 . 01mm-30mm, cross the water hole intersecting two arms of each length ranges: 0 01mm-30mm; when the water hole for multiple cross, cross two cross arms length of each range: 0 . 01mm-30mm. [0020] 本发明在应用时,首先用注射器通过输液导管向与还未与泵头结合的储液袋内注入药液,注完后将泵头安装到外壳内,使得泵头上的驱动件动作时能够正常驱动硅胶囊内的药水往内接头的进水通道流;然后开始输液工作。 [0020] In the application of the present invention, first with a syringe and the reservoir bag and the pump head has not been bound into the liquid through the infusion catheter, after the injection pump head to the inner housing, such that the pump head of the drive member during normal driving operation silicone sac within the joint solution to the water channel flow; and then begin the infusion work. 抗逆流自封阀中的内接头、外接头阀片在保证能够正常输液的同时,由于阀片上的出水孔具有自封能力,同时在泵头压力的作用下,可以避免重力或其他压力作用下造成回血或者输液失控的情况。 The self-styled anti-reflux valve nipples, valves outside connector at the same time to ensure the normal infusion, due to the water hole with a self-sealing valve on capacity, while under the influence of the pump head pressure, to avoid causing gravity or other return of blood pressure or infusion runaway situation. 本发明中通过合理选择阀片的材料、厚度,以及阀片上出水孔的长度,使得阀片的自封能力较好,为输液者的安全提供了保障。 The present invention is a reasonable choice by the valve material, thickness and length of the water hole on the valve, the valve so that the self-proclaimed ability is better, for the safety of infusion to provide a guarantee. [0021] 本发明中所述具体实施案例仅为本发明的较佳实施案例而已,并非用来限定本发明的实施范围。 [0021] Specific embodiments of the present invention, the preferred embodiment of the case of only the case of the invention only, not intended to limit the scope of the present invention. 即凡依本发明申请专利范围的内容所作的等效变化与修饰,都应作为本发明的技术范畴。 That is where the contents of patent applications for inventions under this range changes and modification made equivalent, should as a technical scope of the present invention.

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Classifications
International ClassificationA61M5/142
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