CN104174078B - One kind of left ventricular assist device - Google Patents

One kind of left ventricular assist device Download PDF

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Publication number
CN104174078B
CN104174078B CN201410468040.9A CN201410468040A CN104174078B CN 104174078 B CN104174078 B CN 104174078B CN 201410468040 A CN201410468040 A CN 201410468040A CN 104174078 B CN104174078 B CN 104174078B
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section
outer tube
suction
ventricle
assist device
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CN201410468040.9A
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CN104174078A (en
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靳立军
成正辉
颜世平
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靳立军
湖南埃普特医疗器械有限公司
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Priority to CN201410468040.9A priority Critical patent/CN104174078B/en
Priority claimed from US15/022,801 external-priority patent/US9981078B2/en
Publication of CN104174078A publication Critical patent/CN104174078A/en
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Abstract

本申请公开了一种左心室辅助装置,包括:外管,外管包括位于左心室中的心室段和位于主动脉中的动脉段,心室段上开设有第一吸入网孔,动脉段上开设有第一排出网孔,外管连通外部驱动装置;心室侧抽吸部件,设置在心室段内;排出段球囊管,其两端密封套固在动脉段的外壁上,排出段球囊管开设有第二排出网孔,第二排出网孔与第一排出网孔的位置错开且不搭接。 The present application discloses a left ventricular assist device, comprising: an outer tube, the outer tube includes a section in the left ventricle and the ventricle positioned in the aorta artery section, defines a first suction hole ventricular network segment, the arterial segment defines a first discharge cell, the outer tube communicating an external drive means; ventricular side of the pumping member, disposed within the ventricle section; balloon discharge pipe section, which ends on the outer wall of the sealing sleeve fixed arterial segment, the balloon tube discharge section defines a second discharge cell, the discharge position of the second cell to the first discharge cell does not overlap the offset. 本左心室辅助装置中,通过外部驱动装置的抽吸和冲压,利用心室侧抽吸部件将血液从左心室吸入外管中,利用排出段球囊管将血液从外管排向主动脉,实现一个循环,将左心室内的血液泵入主动脉。 This left ventricular assist device, the suction and stamping the external drive means, the use of the ventricular side of the suction member to suction blood from the left ventricle of the outer tube, the balloon section by the discharge pipe discharging the blood from the outer tube to the aorta, to achieve one cycle, the left ventricle pumps blood into the aorta. 本发明的左心室辅助装置结构简单,可靠性强,对身体组织的创伤小,并且不会对血细胞产生破坏。 Simple left ventricular assist device structure of the present invention, reliability, less trauma to the body tissue, and does not cause damage to the blood cells.

Description

一种左心室辅助装置 One kind of left ventricular assist device

技术领域 FIELD

[0001]本发明涉及介入医疗器械技术领域,特别涉及一种左心室辅助装置。 [0001] The present invention relates to the field of interventional medical device technology, particularly to a left ventricular assist device.

背景技术 Background technique

[0002]近年来,心血管疾病发病率增加。 [0002] In recent years, increased cardiovascular morbidity. 据世界卫生组织调查研究,目前,心血管疾病占所有疾病的30%左右,预计2020年心血管疾病将占到所有疾病的40%,其中,多数疾病最终影响到左心室功能,造成左心室发竭、心源性休克等左心室功能疾病。 According to the survey research World Health Organization, at present, cardiovascular diseases accounted for about 30% of all diseases, cardiovascular disease is expected in 2020 will account for 40% of all diseases in which the majority of the disease and ultimately affect the function of the left ventricle, the left ventricle hair failure, cardiogenic shock and left ventricular function in disease.

[0003]针对左心室功能疾病,国内外学者提出新的方法,左心室辅助装置(Leftventricular assist devices,英文缩写为LVAD)是针对左心功能不全患者,将左心室血液引流到主动脉,从而提供循环支持。 [0003] for left ventricular function disorders, domestic and foreign scholars have proposed a new method, left ventricular assist devices (Leftventricular assist devices, the English abbreviation for LVAD) is for patients with left ventricular dysfunction, left ventricular drainage of blood to the aorta, providing circulatory support. LVAD按是否植入体内分为植入型和体旁型;按血液流动形式分为脉动型和轴流型。 LVAD implanted into implant according to whether the body type and side type; according to the flow of blood into the form of the pulsating type and axial type.

[0004]传统的左心室辅助装置是通过外科手术植入,通过在左心室和主动脉上打孔,中间设置栗,建立通道。 [0004] The conventional left ventricular assist device is surgically implanted in the left ventricle by puncturing the aorta and, disposed intermediate Li, establish the tunnel.

[0005]外科手术植入创伤大,目前,临床应用较多的经皮左心室辅助装置主要有体外膜肺氧合系统(Extracorporeal membrane oxygenat1n,英文缩写为Ecmo)、主动脉内球囊反搏(intra-aortic balloon counter pulsat1n,英文缩写为IABP)、Tandem Heart经皮左心室辅助装置和Impella心室辅助系统。 [0005] trauma surgical implantation, at present, the clinical application of more percutaneous left ventricular assist device main ECMO system (Extracorporeal membrane oxygenat1n, English abbreviation for ECMO), intra-aortic balloon counterpulsation ( intra-aortic balloon counter pulsat1n, English abbreviation for IABP), Tandem Heart left ventricular assist devices, and transdermal Impella ventricular assist system. Ecmo系统是在主动脉和主静脉中分别植入两根导管,主静脉中的导管连接外置人工肺,外置人工肺连接轴流栗或脉动栗,再连接主动脉中的导管,缺点是建立需外置人工肺,结构复杂,肺循环中断,易造成肺血管内血栓形成,且易大出血。 Ecmo system in the aorta and vena cava were implanted in two conduits, connecting the main vein external artificial lung catheters, artificial lung external connection pulsating axial Li or Li, and then connected to a catheter in the aorta, the disadvantage is the need to establish an external artificial lung, a complex structure, the pulmonary circulation is interrupted, could easily lead to pulmonary vascular thrombosis, and easy bleeding. 主动脉内球囊反搏术是在主动脉介入一个长球囊,球囊随着心脏跳动充、排气,增强心肌供血,缺点是依赖于心室的功能,工作不稳定。 Intra-aortic balloon counterpulsation is a long involvement in aortic balloon, balloon filled with the heart beat, exhaust, enhance myocardial blood supply, the disadvantage is dependent on ventricular function, job insecurity. Tandem Heart系统是由经股静脉穿刺到左心房的流入管、体外中心栗、经股动脉穿刺到左心室的流出管组成,建立左心房到股动脉引流通道,缺点是有两处创伤大,操作复杂,需房间隔穿刺。 Tandem Heart system via the femoral vein puncture into the left atrium of the inlet pipe, the center of Li in vitro, into the left ventricle via the femoral artery puncture outflow tubes, femoral artery to the left atrium to establish the drainage channel, two big disadvantage is wound, the operation complex and requires transseptal. Impella系统是由经股动脉穿刺到左心室的导管组成,导管前端有笼状的血液流入口,位于升主动脉有流出口,流入口和流出口之间有轴流栗,将左心室血液引流到主动脉,缺点是流量依赖于栗的转速,高速转动叶片可能破坏红细胞等。 Impella system to puncture the femoral artery by a catheter composed of the left ventricle, the distal end of the catheter has a cage-like blood inlet port, an outlet with a flow in the ascending aorta, Li axial flow between inlet and outlet, the drainage of blood the left ventricle the aorta, the disadvantage is dependent on the flow speed of Li, a high-speed rotating blade may destroy red blood cells.

[0006]综上所述,在完成左心室辅助功能的如提下,如何解决现有的左心室辅助装置结构和操作复杂,工作不稳定,对人体组织细胞创伤大的问题,成为了本领域技术人员亟待解决的问题。 [0006] As described above, in the complete left ventricular assist functions as mentioned, how to solve the conventional left ventricular assist device configuration and complex operation, unstable, a large wound on the problem of human tissue cells, the art has become a technical staff of problems to be solved.

发明内容 SUMMARY

[0007]有鉴于此,本发明的目的在于提供一种左心室辅助装置,在完成左心室辅助功能的前提下,以简化结构和操作,提高工作可靠性,减小对人体组织和细胞的创伤。 [0007] In view of this, an object of the present invention is to provide a left ventricular assist device, under the premise of complete left ventricular assist function, to simplify the structure and operations, improve reliability, reduce trauma to human tissues and cells .

[0008]为达到上述目的,本发明提供以下技术方案: [0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] —种左心室辅助装置,包括: [0009] - species left ventricular assist device, comprising:

[0010]外管,所述外管包括位于左心室中的心室段和位于主动脉中的动脉段,所述心室段的管壁上开设有第一吸入网孔,所述动脉段的管壁上开设有第一排出网孔,所述外管一端封闭,另一端用于连通外部驱动装置; [0010] an outer tube, the outer tube includes a section in the left ventricle and the ventricle positioned in the aorta artery section, defines a first wall of the suction hole ventricular network segment, the arterial wall segment and defines a first discharge cell, the outer tube is closed at one end, the other end for communication with an external drive means;

[0011 ] 心室侧抽吸部件,设置在所述心室段内,当所述外部驱动装置抽吸时,用于将左心室中的血液引入到所述外管的管腔中,当所述外部驱动装置冲压时,用于阻止所述外管中的血液从所述心室段排出; [0011] the ventricular side of the suction member, disposed within the ventricle section, when the external drive means for aspirating, the left ventricle for introducing blood into the lumen of the outer tube, when the external punching drive means for blocking said outer pipe blood discharged from the ventricle section;

[0012]排出段球囊管,其两端密封套固在所述动脉段的外壁上,所述排出段球囊管的管壁上开设有第二排出网孔,所述第二排出网孔与所述第一排出网孔的位置错开且不搭接,当所述外部驱动装置抽吸时,所述排出段球囊管密封贴合在所述动脉段的外壁上,当所述外部驱动装置冲压时,所述排出段球囊管与所述动脉段的外壁分离,形成间隙。 [0012] discharge pipe balloon section, both ends thereof fixed sealing sleeve outer wall of the artery segment, said upper wall portion of the balloon defines discharge tube with a second discharge cell, a second discharge cell position of the first discharge cell does not overlap the offset, when the external suction driving apparatus, the exhaust pipe sealing balloon section bonded to the outer wall of the artery segment, when the external drive when the press apparatus, an outer wall of the discharge tube and the balloon separation section artery segment, a gap is formed.

[0013]优选的,在上述的左心室辅助装置中,所述心室侧抽吸部件为抽吸段球囊管,其两端密封固定在所述心室段的内壁上,所述抽吸段球囊管上开设有第二吸入网孔,所述第二吸入网孔与所述第一吸入网孔的位置错开且不搭接,所述抽吸段球囊管为延展性材料,当所述外部驱动装置抽吸时,所述抽吸段球囊管与所述心室段的内壁形成间隙,当所述外部驱动装置冲压时,所述抽吸段球囊管密封贴合在所述心室段的内壁上。 [0013] Preferably, in the above-described left ventricular assist device, the ventricular side of the suction member is a suction tube a balloon section, both ends thereof sealingly secured to the inner wall of the ventricle section, the suction ball segment bladder defines a second suction pipe network hole, the second suction hole network location of the first suction hole is offset from and does not overlap network, the suction pipe of ductile material of the balloon section when the external suction driving apparatus, the suction tube and the inner wall segment ventricular balloon segment gap is formed, when the external drive means press the suction tube is sealed balloon section bonded to the ventricular section on the inner wall.

[0014]优选的,在上述的左心室辅助装置中,所述心室侧抽吸部件为设置在所述心室段内部、且位于所述心室段和所述动脉段之间的单向瓣膜,所述单向瓣膜的单向导通方向为由心室段指向动脉段。 [0014] Preferably, in the above-described left ventricular assist device, the ventricular side of the suction member is disposed in the interior of the ventricle section, and located between said one-way valve and the arterial segment ventricular segments, the said one-way valve in the direction of the conducting segments by pointing ventricular arterial segment.

[0015]优选的,在上述的左心室辅助装置中,还包括与所述外管的远心端连接的接头,所述接头用于连接所述外部驱动装置。 [0015] Preferably, in the above-described left ventricular assist device further comprising a distal fitting end of the outer tube is connected to a connector for connecting the external drive means.

[0016]优选的,在上述的左心室辅助装置中,所述接头包括第一分支管和第二分支管,所述第一分支管与所述外部驱动装置连接; [0016] Preferably, in the above-described left ventricular assist device, the branch pipe joint comprising a first and a second branch pipe, said first branch pipe connected to the external drive;

[0017]还包括导丝腔,导丝腔贯穿于所述外管的内部,所述导丝腔的近心端与所述外管的近心端密封固定,并伸出所述外管的近心端,所述导丝腔的远心端与所述第二分支管的端部密封固定,并与外部连通。 [0017] further comprising a guide wire lumen, the guide wire lumen through the interior of the outer tube, the proximal end of the guide wire lumen of the proximal end of the outer tube is sealed and fixed, and the outer tube projecting the proximal end of the guidewire lumen and the distal end portion of the second branch tube end sealing fixing, and communicates with the outside.

[0018] 优选的,在上述的左心室辅助装置中,还包括导丝腔,所述导丝腔固定在所述外管的近心端的外壁上。 [0018] Preferably, in the above-described left ventricular assist device, further comprising a guidewire lumen, the outer wall of the fixed guide wire lumen of the proximal end of the outer tube.

[0019] 优选的,在上述的左心室辅助装置中,所述导丝腔的近心端具有向远心端方向弯曲的圈状结构。 [0019] Preferably, in the above-described left ventricular assist devices, the guidewire lumen having a proximal end to the distal end of the curved direction of ring-shaped structure.

[0020]优选的,在上述的左心室辅助装置中,还包括设置在所述外管上且位于所述心室段和所述动脉段之间的显影示标。 [0020] Preferably, in the above-described left ventricular assist device further comprising a tube disposed in the outer and located on the scale shown between the developing section and the ventricle arterial segment.

[0021]优选的,在上述的左心室辅助装置中,所述外管为单层结构,所述单层结构为金属网管;或者,所述外管为多层结构,由内至外依次包括内层、所述内层为聚四氟乙烯膜,中间层和外层,所述中间层为钢丝网或弹簧,所述外层为尼龙层。 [0021] Preferably, in the above-described left ventricular assist device, the outer tube is a single layer, the single layer structure is a metal mesh; Alternatively, the outer tube is a multi-layer structure, comprising in sequence from inside to outside an inner layer is a polytetrafluoroethylene membrane, intermediate and outer layers, said intermediate layer is a steel mesh or spring, the outer layer is nylon.

[0022]优选的,在上述的左心室辅助装置中,所述外管的心室段与所述动脉段之间的夹角135°〜155°。 [0022] Preferably, the angle between the segment and the ventricle in the above-described arterial segment left ventricular assist device, the outer tube of 135 ° ~155 °.

[0023]与现有技术相比,本发明的有益效果是: [0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024]本发明提供的左心室辅助装置中,心室侧抽吸部件设置在外管的心室段内,排出段球囊管两端密封套在外管的动脉段的外壁上。 [0024] The present invention provides a left ventricular assist device, the ventricular side of the suction member disposed within the outer tube of the ventricular section, the discharge section of the sealing sleeve on the outer wall of the artery of the outer tube end sections of the balloon tube. 将左心室辅助装置穿刺到心脏内,使外管的心室段位于左心室中,外管的动脉段位于主动脉中,心室段和动脉段被左心室与主动脉之间的主动脉瓣分开,互补干涉,工作时,当外部驱动装置抽吸时,外管内形成负压,在负压作用下,排出段球囊管被吸附贴合在动脉段的外壁上,由于第二排出网孔与第一排出网孔的位置错开排列且不搭接,因此,排出段球囊管将动脉段上的第一排出网孔封住,外管的动脉段与主动脉不连通,与此同时,心室侧抽吸部件在外部驱动装置的抽吸作用下,将左心室中的血液抽吸进入外管的心室侧,并且进入外管整个管腔中;之后,当外部驱动装置向外管中冲压时,心室侧抽吸部件阻止外管中的血液从心室段排向左心室,与此同时,在冲压作用下,排出段球囊管脱离与动脉段的密封贴合,两者之间形成流通间隙,第一排出网 The left ventricular assist device to the puncturing of the heart, the ventricular section located in the left ventricle of the outer tube, the outer tube arterial segment is positioned in the aorta, ventricular and arterial segments are separated sections of the aortic valve between the left ventricle and the aorta, complementary interference, in operation, when an external suction driving apparatus, a negative pressure within the outer tube, under negative pressure, the balloon section of the discharge tube is bonded to the outer wall of the adsorbed arterial segment, since the first and second discharge cell the position of a discharge cell is staggered and not overlapping, therefore, the first discharge cell in the discharge section of the balloon arterial segment tube sealed, arterial segment does not communicate with the outer tube of the aorta, at the same time, the ventricular side in the suction member drive means of external suction, pumping blood into the left ventricle of the ventricular side of the outer tube, the outer tube and into the lumen throughout; Thereafter, when the external drive means in the outer tube punching, the ventricular side of the suction tube in the outer member to prevent blood from the ventricle to the left ventricle discharge period, meanwhile, under the effect of stamping, from the discharge tube and the sealing balloon segment arterial segment bonded, form a flow space therebetween, The first discharge network 与第二排出网孔导通,血液从外管的动脉段进入主动脉中。 And the second discharge cell is turned on, from the arterial blood tube into the outer section of the aorta. 通过外部驱动装置的抽吸和冲压过程实现一个循环,将左心室内的血液栗入主动脉。 It achieved a punching process and circulated through the external suction driving apparatus, blood the left ventricle into the aorta in the Li. 本发明的左心室辅助装置不需要设置人工肺等部件,结构简单,不会因为肺循环的中断而停止工作,可靠性增强,且只需要在身体上开设一个穿刺孔,对身体组织的创伤小,并且不会对血细胞产生破坏。 Left ventricular assist device of the present invention does not need an artificial lung and other components, a simple structure, without interruption because of pulmonary circulation stops working, enhanced reliability, and only need to open a puncturing hole in the body, little trauma to the body tissue, and no damage to blood cells.

附图说明 BRIEF DESCRIPTION

[0025]为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据提供的附图获得其他的附图。 [0025] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only examples of the present invention, those of ordinary skill in the art is concerned, without creative efforts, can derive other drawings from the accompanying drawings provided.

[0026]图1为本发明实施例提供的第一种左心室辅助装置的结构示意图; [0026] Fig 1 a schematic view of a first configuration of the left ventricle assist device provided in embodiments of the present invention;

[0027]图2为图1中的A向局部不意图; [0027] FIG 2 is not intended to local 1 A;

[0028]图3为图1中的左心室辅助装置的外管的心室段与抽吸段球囊管的结构示意图; [0028] FIG. 3 is a schematic section of the ventricular balloon and the outer pipe section of the suction tube of FIG. 1 configuration of the left ventricular assist device;

[0029]图4为图1中的左心室辅助装置的外管的动脉段与排出段球囊管的结构示意图; [0029] FIG. 4 is a section of the outer tube of the artery in a left ventricular assist device of FIG schematic structure of the exhaust pipe section of the balloon;

[0030]图5为本发明实施例提供的第二种左心室辅助装置的结构示意图; [0030] FIG 5 provides schematic structural diagram of a second embodiment of the ventricular assist device of the present embodiment of the invention;

[0031 ]图6为本发明实施例提供的第三种左心室辅助装置的结构示意图; [0031] FIG 6 provides schematic structural diagram of a third embodiment of the ventricular assist device of the present embodiment of the invention;

[0032]图7为图6中的B向局部示意图; [0032] FIG 7 is a partial schematic view of the 6 B;

[0033]图8为本发明实施例提供的第四种左心室辅助装置的结构示意图; [0033] FIG. 8 provides schematic structural diagram of a fourth embodiment of the ventricular assist device of the embodiment of the present invention;

[0034]图9为本发明实施例提供的第五种左心室辅助装置的结构示意图; [0034] Figure 9 a schematic view of the structure of a fifth embodiment provided in the left ventricle assist device of the embodiment of the present invention;

[0035]图10为本发明实施例提供的第六种左心室辅助装置的结构示意图。 [0035] FIG 10 a schematic view of a sixth left ventricular assist device according to an embodiment of the present invention.

[0036]在上述图1-图10中,11为接头、111为第一分支管、112为第二分支管、12为外管、121为第一排出网孔、122为中间层、123为外层、124为内层、125为第一吸入网孔、13为导丝腔、131为圈状结构、14为排出球囊管、141为第二排出网孔、15为抽吸段球囊管、151为第二吸入网孔、16为显影示标、18为单向瓣膜。 [0036] In the above-described FIGS. 1-10, a linker 11, a first branch pipe 111, a second branch pipe 112, an outer tube 12, a first discharge cell 121, intermediate layer 122, 123 an outer layer, the inner layer 124, network 125 is a first suction hole 13 of the guide wire lumen 131 with a ring-like structure, the discharge balloon 14 as a pipe, a second discharge cell 141, the suction section 15 of the balloon tube, network 151 is a second suction hole 16 is shown marked development, one-way valve 18.

具体实施方式 Detailed ways

[0037]本发明的核心是提供了一种左心室辅助装置,在完成左心室辅助功能的前提下,简化了结构和操作,提高了工作可靠性,减小了对人体组织和细胞的创伤。 [0037] The core of the invention is to provide a left ventricular assist device, under the premise of complete left ventricular assist functions, simplifying the structure and operation, increased reliability, reduced trauma to the human tissues and cells.

[0038]下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0038] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, all other embodiments of ordinary skill in the art without any creative effort shall fall within the scope of the present invention.

[0039]请参考图1-图10,本发明实施例提供了一种左心室辅助装置,包括外管12、心室侧抽吸部件和排出段球囊管14。 [0039] Please refer to FIG 1 to FIG 10, embodiments of the present invention provides a left ventricular assist device, comprising an outer tube 12, the ventricular side of the suction member 14 and the exhaust pipe section of the balloon. 其中,外管12包括心室段和动脉段,心室段与动脉段相邻,夕卜管12较硬,具有良好的径向抗压性能,使用时,心室段位于左心室内,动脉段位于主动脉内;心室段的管壁上开设有第一吸入网孔125,动脉段上开设有第一排出网孔121,且外管12的一端封闭,另一端用于连通外部驱动装置,外部驱动装置提供抽吸力和冲压力;心室侧抽吸部件设置在心室段内,当外部驱动装置抽吸时,心室侧抽吸部件将左心室中的血液引入到外管12的管腔中,当外部驱动装置冲压时,心室侧抽吸部件阻止外管中的血液从心室段排向左心室;排出段球囊管14的两端密封套固在动脉段的外壁上,将第一排出网孔121全部覆盖在排出段球囊管14中,且排出段球囊管14的管壁上开设有第二排出网孔141,第二排出网孔141与第一排出网孔121的位置错开排列且不搭接,排出段球囊管14由拉伸性能 Wherein the outer tube section 12 including ventricular and arterial segment, ventricular and arterial segment adjacent to the segment, Bu Xi tube 12 hard, has good radial compression performance, when used, the ventricular section is located within the left ventricle, the aorta artery segment is positioned ; ventricular wall defines a upper section of the first suction hole 125 network, the arterial segment defines a first discharge cell 121, and the closed end of the outer tube 12, the other end for communication with external drive means, the drive means for providing an external pump punch and suction pressure; the ventricular side of the suction member disposed in the ventricle section, when an external suction driving apparatus, the ventricular side of the suction member to the left ventricle the blood is introduced into the lumen of the outer tube 12 when the external drive means when the press, the ventricular side of the suction tube in the outer member to prevent blood from the ventricle to the left ventricle discharge section; discharging the solid outer wall of the sealing sleeve arterial segment end sections of the balloon tube 14, the first discharge cell 121 entirely cover defines a second discharge cell 141 in the wall of the discharge pipe section 14 of the balloon, and the balloon section of the discharge pipe 14, the second discharge cell 141 are staggered position of the first discharge cell 121 and does not overlap , the discharge section 14 by the tensile properties of the balloon tube 好的医用材料制成,很薄、很软,当外部驱动装置抽吸时,排出段球囊管14收缩,密封贴合在动脉段的外壁上,第一排出网孔121与第二排出网孔141不导通,当外部驱动装置冲压时,排出段球囊管14膨胀,与动脉段的外壁脱离贴合,形成间隙,第一排出网孔121与第二排出网孔141导通。 Good medical material made of very thin, very soft, when the external drive means for aspirating, the discharge pipe 14 converging section of the balloon, sealing is bonded to the outer wall of the artery segment, a first discharge cell 121 and the second discharge net hole 141 is not conducting, when the external punching drive means, the discharge pipe 14 expanded section of the balloon, from the outer wall of the arterial segment bonded together to form a gap, a first discharge cell 121 and the second discharge cell 141 is turned on.

[0040]上述左心室辅助装置的工作过程和工作原理是:手术时,用肝素盐水冲洗装置,并排气,将外管12与外部驱动装置连通,外部驱动装置与外管12内腔连接的腔体用肝素盐水冲洗,并注满肝素盐水,排气。 [0040] The working process and working principle of the above-described left ventricular assist device are: surgery, with heparin saline flushing device, and the exhaust gas, the outer tube 12 communicates with an external drive means, the drive means external of the outer tube 12 connected to a lumen cavity flushed with heparinized saline, filled with heparin saline and exhaust. 完成手术必要的工作后,将导丝经股动脉穿刺部位的鞘管穿入主动脉,最终到达左心室,使外管12的心室段位于左心室中,外管12的动脉段位于主动脉中,心室段和动脉段被左心室与主动脉之间的主动脉瓣分开。 Once the required work operation, the guidewire through the femoral artery puncture site sheath penetration aorta, and finally to the left ventricle, the ventricular section of the outer tube 12 located in the left ventricle, arterial segment 12 of the outer tube positioned in the aorta , ventricular and arterial segments are separated sections of the aortic valve between the left ventricle and the aorta. 工作时,当外部驱动装置抽吸时,外管12内形成负压,在负压作用下,排出段球囊管14被吸附收缩,贴合在动脉段的外壁上,由于第二排出网孔141与第一排出网孔121的位置错开排列且不搭接,因此,排出段球囊管14将动脉段上的第一排出网孔121封住,第一排出网孔121与第二排出网孔141不导通,则外管12的动脉段与主动脉不连通,主动脉中的血液不会进入外管12中,与此同时,心室侧抽吸部件在外部驱动装置的抽吸作用下,将左心室中的血液抽吸进入外管12的心室段内,并且进入外管12整个管腔中以及外部驱动装置的腔体内,此过程完成了血液从左心室进入外管12的操作;之后,外部驱动装置向外管12中进行冲压,心室侧抽吸部件阻止外管12中的血液从心室段排向左心室,与此同时,在冲压作用下,排出段球囊管14膨胀,其管壁脱离与动脉段的外壁密封贴合 In operation, when an external suction driving apparatus, the outer tube 12 a negative pressure in the negative pressure, the balloon section of the discharge tube 14 is contracted adsorbed, attached to the outer wall of the artery segment, since the second discharge cell 141 are staggered position of the first discharge cell 121 and does not overlap, and therefore, the discharge section of the balloon tube 14 in the first discharge cell 121 to seal arterial segment, the first discharge cell 121 and the second discharge net hole 141 is not turned on, the outer tube is not in communication with the arterial segment 12 of the aorta, the aorta blood does not enter the outer tube 12, at the same time, the ventricular side of the suction action of the suction member at the external drive means the aspiration of blood in the left ventricle into the outer tube section 12 of the ventricle, and into the lumen of the outer tube 12 and the entire drive means external of the cavity, this process operation is completed blood from the left ventricle into the outer tube 12; Thereafter, the external drive means in the outer tube 12 is press, the ventricular side of the suction member 12 to prevent the outer tube section rows of blood from the ventricle to the left ventricle, while, under action of the press, the discharge pipe 14 expanded section of the balloon, wall and an outer wall from the arterial segment bonded seal 两者之间形成流通间隙,第一排出网孔121与第二排出网孔141导通,血液从外管12的动脉段进入主动脉中,此过程完成血液从外管12进入主动脉的操作。 It has a flow gap therebetween, the first discharge cell 121 and the second discharge cell 141 is turned on, the blood from the arterial segment 12 of the outer tube into the aorta, this process operation is completed blood into the aorta from the outer tube 12 . 通过外部驱动装置的抽吸和冲压过程实现一个循环,将左心室内的血液栗入主动脉。 It achieved a punching process and circulated through the external suction driving apparatus, blood the left ventricle into the aorta in the Li.

[0041]可以看出,本发明的左心室辅助装置不需要设置人工肺等部件,结构简单,不会因为肺循环的中断而停止工作,可靠性增强,且只需要在身体上开设一个穿刺孔,对身体组织的创伤小,并且不会对血细胞产生破坏。 [0041] As can be seen, left ventricular assist device according to the present invention does not need an artificial lung and other components, a simple structure, without interruption because of pulmonary circulation stops working, enhanced reliability, and only need to open a puncturing hole in the body, less trauma to the body tissues, and no damage to blood cells. 并且外部驱动装置可以根据人体的实际脉搏频率进行抽吸和冲压频率的调节,实现频率同步,从而实现左心室的辅助功能。 And the external drive means may be based on the actual pulse frequency adjustment of the suction body and punching frequency to achieve frequency synchronization in order to achieve accessibility of the left ventricle.

[0042]如图1-图7所示,在本发明一具体实施例中,心室侧抽吸部件为抽吸段球囊管15,设置在心室段内部,两端密封固定在心室段的内壁上,将第一抽吸网孔125覆盖在抽吸段球囊管14内,抽吸段球囊管15上开设有第二吸入网孔151,第二吸入网孔151与第一吸入网孔125的位置错开排列且不搭接,抽吸段球囊管15由拉伸性能较好的医用材料制成,同样很薄很软,具体结构参见图3。 [0042] Figures 1 to 7, in a particular embodiment of the present invention, the ventricular side of the suction member is a suction section of the balloon tube 15 disposed inside the ventricle section, both ends of the inner wall of the sealing section fixed to the ventricle on the mesh 125 covering the first suction within the suction section of the balloon tube 14 defines a suction hole 151 on the second suction network segment 15 of the balloon tube 151 and the first suction hole of the second network access network suction hole the staggered position 125 and does not overlap, the balloon section of the suction tube 15 is made preferably of medical material tensile properties, also thin and soft, particularly see Figure 3.

[0043]抽吸段球囊管15在工作时,当外部驱动装置抽吸时,外管12内部形成负压,抽吸段球囊管15在负压的抽吸作用下收缩,收缩率大于外管12的收缩率,则抽吸段球囊管15与心室段的内壁之间形成流通间隙,第一吸入网孔125与第二吸入网孔151导通,此时,血液从左心室吸入心室段内,并流入整个外管12管腔以及外部驱动装置,当外部驱动装置冲压时,抽吸段球囊管15膨胀,密封贴合在心室段的内壁上,第一吸入网孔125与第二吸入网孔151不导通,外管12中的血液不会通过心室段的抽吸段球囊管15排向左心室。 [0043] section of the suction tube 15 of the balloon during operation, when an external suction driving apparatus, a negative pressure inside the outer tube 12, the balloon section of the suction tube 15 shrinks under suction by the negative pressure, is greater than shrinkage shrinkage of the outer tube 12, the balloon section of the suction tube a gap is formed between the inner wall of the flow section 15 and the ventricle, a first suction hole 125 and the second network access network suction hole 151 is turned on, at this time, the suction of blood from the left ventricle intraventricular section 12 and into the lumen of the entire outer tube and an external driving means, when the external punching drive means, the suction tube 15 expanded section of the balloon, attached to the inner wall of the sealing section of the ventricles, the first suction hole 125 and the network network second suction hole 151 is not turned on, the outer tube 12 does not pass through the blood pumping segment ventricular balloon segment exhaust pipe 15 to the left ventricle.

[0044]如图8-图10所示,在本发明一具体实施例中,心室侧抽吸部件或者为设置在心室段内部、且位于心室段和动脉段之间的单向瓣膜18,单向瓣膜18的单向导通方向为由心室段指向动脉段。 [0044] As shown in FIG. 8 to FIG. 10, in a particular embodiment of the present invention, the ventricular side of the suction member or a segment disposed inside the ventricle and located way valve between ventricular and arterial segment section 18, a single direction by the unidirectional valve 18 through the ventricular section pointing arterial segment.

[0045]则采用单向瓣膜18的心室侧抽吸部件的工作原理和工作过程是:当外部驱动装置抽吸时,外管12内形成负压,血液通过心室段上的第一吸入网孔125被吸入心室段,且在抽吸力的作用下,进入心室段的血液通过设置在心室段和动脉段之间的单向瓣膜18进入动脉段,并流经整个外管12以及外部驱动装置的腔体内,当外部驱动装置冲压时,由于单向瓣膜I8具有单向导通性能,只允许血液从心室段向动脉段流通,因此,血液被单向瓣膜I8阻止流向心室段,则血液不会从心室段返回左心室,而只能从排出段球囊管14排向主动脉,完成血液由左心室向主动脉的流动。 [0045] The use of the ventricular side of the suction way valve member 18 and the work process is the working principle: when an external suction driving apparatus, a negative pressure within the outer tube 12, the first blood through the suction hole ventricular network segment segment 125 is drawn into the ventricle, and under the action of a suction force, into the blood by the ventricle section disposed between the ventricle and the arterial segment section way valve 18 into the arterial section, and flowing throughout the external drive means 12 and the outer tube the cavity, when the external drive means press, the one-way valve having a one-way conduction property I8, allowing only flow of blood to the artery segment, therefore, the blood flow is blocked ventricular I8 way valve section from the ventricle section, from the blood does not ventricular return segment of the left ventricle, but only to the discharge section of the aortic balloon from the exhaust pipe 14, to complete the blood flow from the left ventricle to the aorta.

[0046]如图1-图10所示,在本实施例中,左心室辅助装置还包括与外管12的远心端连接的接头11,接头11用于和外部驱动装置连接,根据不同的外部驱动装置和外管12结构改变接头11的结构形式,只需更换接头11即可,增加左心室辅助装置的适用范围,接头11为注塑件,采用塑料,接头11螺纹为标准鲁尔接头结构。 [0046] Figures 1 to 10, in the present embodiment, the left ventricular assist device further comprising a distal end with a joint 12 connected to the outer tube 11, and connector 11 for connecting an external driving means, depending on structure of the external drive means 12 and the outer tube 11 to change the structure of the joint, the joint 11 can simply replace, left ventricular assist device to increase the scope of application of the joint member 11 is injection molded, plastic, a threaded connector 11 is a standard luer fitting structure . 当然,外部驱动装置还可以直接与外管12连接。 Of course, also be an external drive means 12 is connected directly to the outer tube.

[0047]如图1、图6、图8和图10所示,在本实施例中,提供了一种接头11形式和导丝腔13的安装结构,接头11包括第一分支管111和第二分支管112,第一分支管111与外部驱动装置连接;左心室辅助装置包括导丝腔13,用于穿过导丝,在导丝和导丝腔13的导向作用下,将左心室辅助装置经股动脉穿刺部位的鞘管穿入主动脉,最终到达左心室。 [0047] 1, 6, 8 and 10, in the present embodiment, there is provided a mounting structure of a guidewire lumen 11 and form the joint 13, joint 11 comprises a first branch pipe 111 and two branch pipe 112, first branch pipe 111 is connected with an external drive means; left ventricular assist device 13 includes a guide wire lumen, a guide wire for passing, under the guiding action of the guide wire lumen 13 and a guidewire, the Left ventricular assist means femoral artery puncture site sheath penetration aorta, and finally to the left ventricle. 本实施例中的导丝腔13贯穿于外管12的内部,导丝腔13的近心端与外管12的近心端密封固定,并伸出外管12的近心端,导丝腔13的远心端与第二分支管112的端部密封固定,并与外部连通。 Internal embodiment of the guide wire lumen 13 through the outer tube 12 of the present embodiment, the proximal end of the guidewire lumen 13 and the outer tube proximal end 12 of the seal retainer, and protruding proximal end of the outer tube 12, the guide wire lumen 13 the distal end portion of the second branch and the end of the sealing tube 112 is fixed, and communicated with the outside. 这种导丝腔13的安装结构稳定性高。 High stability of this mounting structure 13 of the guidewire lumen.

[0048]接头11形式和导丝腔13的安装结构除了采用上述结构之外,还可以为其它结构,如图5和图9所示,接头11具有一个分支管,直接与外部驱动装置连接,导丝腔13固定在外管12的近心端的外壁上,由于长度较短,因此,导丝腔13自身的硬度不会影响整个外管12的弯曲性能,可以更灵活、更快速地穿刺到位,而且该导丝腔13可以在外管12外直接进行更换,更换方便快速。 [0048] The connector mounting structure 11 and forms the guide wire lumen 13 in addition to the above-described configuration, other configurations may also be, as shown in FIGS. 5 and 9, joint 11 having a branch pipe, connected directly to an external drive, guide wire lumen 13 of the outer tube fixed to the proximal end of the outer wall 12, due to the short length, and therefore, the guide wire lumen 13 itself does not affect the bending rigidity performance of the outer tube 12, can be more flexible, faster puncture place, the guidewire lumen 13 and the outer tube 12 can be replaced to the direct, quick and easy replacement.

[0049] 对以上两种导丝腔13进一步优化,如图1-图10所示,导丝腔13的近心端具有向远心端方向弯曲的圈状结构131,类似于猪尾巴形状。 [0049] The two or more further optimize the guidewire lumen 13, shown in Figures 1-2, the proximal end of the guide wire lumen 13 has a distal end bent toward the direction of ring structures 131 10 similar pig tail shape. 由于导丝腔13的近心端设置成弯曲的圈状结构131,则在导丝腔13穿刺的过程中,导丝腔13的尖端不会对人体组织,特别是心脏内壁造成损伤。 Since the proximal end of the guide wire lumen 13 is disposed a curved ring-shaped structure 131, the guidewire lumen 13 during the piercing, the tip of the guide wire lumen 13 is not of human tissue, especially the heart inner wall damage.

[0050]在本发明一具体实施例中,如图1-图10所示,左心室辅助装置还包括设置在外管12上且位于心室段和动脉段之间的显影示标16,显影示标16的个数优选为两个,两个显影示标16之间的区域就是左心室辅助装置的停止穿刺区域,显影示标16用于左心室辅助装置的穿刺过程,当左心室辅助装置经过主动脉进入左心室时,通过显影示标16观察左心室辅助装置到达的位置,当两个显影示标16位于主动脉瓣两侧时,停止穿刺,将左心室辅助装置固定,此时,外管12的心室段进入到左心室中,而动脉段位于主动脉中。 [0050] In one embodiment of the present invention, shown in Figures 1 to 10, further comprising a left ventricular assist device 12 is provided on the outer tube 16 and located between the developing shows marked ventricular and arterial segment section, illustrating a developing standard the number 16 is preferably two, between the two regions labeled 16 shows the developing region is stopped puncture left ventricular assist device, a developing process is shown labeled 16 for piercing the left ventricular assist device, when the left ventricular assist device through the main when the artery into the left ventricle, left ventricular assist device to the observation position is shown by the development scale 16, when the two labeled developing 16 shown on both sides of the aortic valve, stop the piercing, the left ventricular assist device fixed, at this time, the outer tube ventricular section 12 into the left ventricle, the aorta and the arterial segment is located.

[0051 ]作为优化,显影示标16的材料为铂铱合金、黄金等,通过显影设备,如X光,观察显影示标16的位置。 [0051] Optimally, the developing material is shown labeled 16 is a platinum-iridium alloy, gold, etc., by the developing apparatus, such as X-ray, developing the observation position mark 16 shown.

[0052]如图1-图4所示,在本实施例中,外管12为多层结构,可以是三层结构,流变成型,由内至外依次包括内层124、中间层122和外层123;内层124为聚四氟乙烯膜,具有摩擦系数低,良好的生物相容性,润滑性能好的优点,不会破坏组织细胞,中间层122为钢丝网或弹簧,在抽吸和压缩过程中能保持外管12径向不变形,具有良好的径向抗压性,同时也可增强装置的前向推送性能,外层123为尼龙层,如Pebax5f5D,具有良好的塑性,使得装置在绕过弯曲血管时具有良好的跟踪性能和抗折性能。 [0052] Figures 1 to 4, in the present embodiment, the outer tube 12 is a multilayer structure, may be a three-layer structure, rheology molding, from inside to outside, it comprises an inner layer 124, intermediate layer 122 and an outer layer 123; 124 inner polytetrafluoroethylene film having a low coefficient of friction, good biocompatibility, good lubricity performance advantages, will not damage the tissue, the intermediate layer 122 is a steel mesh or spring, pumping suction and compression process to maintain the radially outer tube 12 is not deformed, the compressive strength with good resistance, but also enhance the performance of the front push means, a nylon outer layer 123, such as Pebax5f5D, with good ductility, such apparatus having excellent tracking performance and the fracture resistance at the time of bypassing the tortuous vessels.

[0053]外管12还可以是双层结构,流变成型,内层为聚四氟乙烯膜,外层为尼龙,如Pebax63D0 [0053] The outer tube 12 may also be a two-layer structure, rheology shaped inner layer is polytetrafluoroethylene film, an outer layer of nylon, such as Pebax63D0

[0054]此外,外管12还可以是单层结构,如图6、图7和图10所示,单层结构为金属网管。 [0054] Further, the outer tube 12 may be a single layer structure, FIG. 6, 7 and 10, a single-layer metal mesh structure. 只要使外管具有良好的径向抗压性和通过性,其它材料和结构的外管12同样适用。 As long as the outer tube has a radial compressive strength and excellent resistance through the outer tube of the other materials and structures 12 are equally applicable.

[0055]如图1-图10所示,在本实施例中,外管12的心室段与动脉段之间的夹角135°〜155°,更优选为145°,根据心脏与主动脉的位置关系,确定心室段与动脉段的夹角,可以方便外管12插入血管中。 [0055] Figures 1 to 10, in the present embodiment, the angle between the outer tube section 12 and the ventricular arterial segment 135 ° ~155 °, more preferably 145 °, in accordance with the heart and aorta positional relationship, angle determining section and arterial segment ventricle, outer tube 12 can be easily inserted into the blood vessel. 当然,根据不同的心脏结构设置不同的夹角,并不局限与本实施例所列举的范围和数值。 Of course, a different angle depending on the set of cardiac structures, not limited to the embodiment recited ranges and values ​​of the present embodiment.

[0056] 在本实施例中,第一吸入网孔125和第一排出网孔121可通过激光打孔,也可直接钻孔,孔穿透外管12的管壁,孔周围无毛刺,防止形成小空间而凝血。 [0056] In the present embodiment, the first suction hole 125 and the first network cell 121 can be discharged by the laser perforation, it may also be drilled holes penetrate the wall of the outer tube 12, without burrs around the hole, preventing forming a small space clotting.

[0057]排出段球囊管14的材料可以采用尼龙材料,如PU8AE,在受到压力时容易变形,类似球囊导管上的球囊,冲压可膨胀,泄压可收缩。 Materials [0057] The discharge section of the balloon tube 14 may be made of nylon, such as PU8AE, easily deformed when subjected to pressure, similar to the balloon on the balloon catheter, an expandable stamped, collapsible relief. 抽吸段球囊管15的材料可以采用尼龙材料,在受到压力时容易变形。 A suction tube segment 15 of the balloon material may be made of nylon, is easily deformed when subjected to pressure. 第二吸入网孔151和第二排出网孔141可通过激光打孔,也可直接钻孔。 Network second suction hole 151 and the second discharge cell 141 by laser drilling, or direct drilling.

[0058]本发明中的左心室辅助装置通过外管12上的多个第一吸入网孔125和抽吸段球囊管15上的第二吸入网孔151吸进血液,通过排出段球囊管14上的多个第二排出网孔141和外管12上的多个第一排出网孔121排出血液,保证了血液的大流量输送,可完全替代正常人的心脏功能,且血液直接从左心室抽吸含氧血到主动脉,符合人体的血液动力学。 [0058] The plurality of left ventricular assist device of the present invention, the outer tube 12 by a first suction hole 125 and the suction network segment a second network suction hole 151 in the suction tube 15 of the balloon into the blood, through the discharge section of the balloon a plurality of tubes 14 on the second discharge cell 12, a plurality of the first discharge tube 141 and outer 121 mesh out of the blood, to ensure a large flow of blood delivery, can completely replace normal heart function, and blood from the left ventricle pumping oxygenated blood into the aorta, the body's hemodynamics in line.

[0059]本发明中的左心室辅助装置适用于心力衰竭、心源性休克、心脏移植前等辅助治疗,以及辅助复杂冠脉病变介入治疗,也可用于心脏停跳的抢救。 [0059] The present invention is applicable to left ventricular assist device failure, cardiogenic shock, etc. adjuvant therapy before heart transplantation, coronary artery disease and an auxiliary complex intervention, may also be used to rescue cardiac arrest.

[0060]本说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。 [0060] In the present specification, the various embodiments described in a progressive manner, differences from the embodiment and the other embodiments each of which emphasizes embodiment, the same or similar portions between the various embodiments refer to each other.

[0061]对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。 [0061] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。 Various modifications to these professionals skilled in the art of the present embodiments will be apparent, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. 因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。 Accordingly, the present invention will not be limited to the embodiments shown herein but is to be accorded herein consistent with the principles and novel features disclosed widest scope.

Claims (10)

1.一种左心室辅助装置,其特征在于,包括: 外管(12),所述外管(12)包括位于左心室中的心室段和位于主动脉中的动脉段,所述心室段的管壁上开设有第一吸入网孔(125),所述动脉段的管壁上开设有第一排出网孔(121),所述外管(12) —端封闭,另一端用于连通外部驱动装置; 心室侧抽吸部件,设置在所述心室段内,当所述外部驱动装置抽吸时,用于将左心室中的血液引入到所述外管(12)的管腔中,当所述外部驱动装置冲压时,用于阻止所述外管(12)中的血液从所述心室段排出; 排出段球囊管(14),其两端密封套固在所述动脉段的外壁上,所述排出段球囊管(14)的管壁上开设有第二排出网孔(141),所述第二排出网孔(141)与所述第一排出网孔(121)的位置错开且不搭接,当所述外部驱动装置抽吸时,所述排出段球囊管(14)密封贴合在所述动脉段的外壁上,当所述外部 A left ventricular assist device, comprising: an outer tube (12), said outer tube (12) includes a section in the left ventricle and the ventricle positioned in the aorta artery segment, the segment ventricle the wall defines a first suction hole network (125), said upper wall arterial segment defines a first discharge cell (121), said outer tube (12) - end closed, the other end for communication with the outside drive means; ventricular luminal side of the suction member, disposed within the ventricle section, when the external drive means during the suction, for introducing blood into the left ventricle to the outer tube (12), when stamping the external drive means, for preventing the outer tube (12) in the blood discharged from the ventricle section; balloon tube discharge section (14), both ends of the sealing sleeve fixed in the outer wall of the arterial segment on the discharge defines a second discharge cell (141) on the balloon tube wall portion (14), said second discharge cell (141) and said first discharge cell position (121) offset without overlap, when sucking the external drive means, the exhaust pipe section of the balloon (14) bonded to seal the outer wall of the artery segment, when the external 驱动装置冲压时,所述排出段球囊管(14)与所述动脉段的外壁分离,形成间隙。 Punching drive means, the exhaust pipe section of the balloon (14) is separated from the outer wall of the artery segment, a gap is formed.
2.根据权利要求1所述的左心室辅助装置,其特征在于,所述心室侧抽吸部件为抽吸段球囊管(15),其两端密封固定在所述心室段的内壁上,所述抽吸段球囊管(15)上开设有第二吸入网孔(151),所述第二吸入网孔(151)与所述第一吸入网孔(125)的位置错开且不搭接,当所述外部驱动装置抽吸时,所述抽吸段球囊管(15)与所述心室段的内壁形成间隙,当所述外部驱动装置冲压时,所述抽吸段球囊管(15)密封贴合在所述心室段的内壁上。 2. The left ventricular assist device according to claim 1, wherein said suction member is a suction side of the ventricular balloon tube segment (15), which is sealed at both ends on the inner wall of the ventricle section, defines a second suction hole network (151) on the suction pipe of the balloon section (15), the second suction hole network (151) and the first network suction hole (125) does not take a position shifted then, when the external drive means suction section of the suction tube of the balloon (15) forms a gap with the inner wall of the ventricle section, when stamping the external drive means, the suction tube segment balloon (15) bonded to the seal on the inner wall of the ventricular section.
3.根据权利要求1所述左心室辅助装置,其特征在于,所述心室侧抽吸部件为设置在所述心室段内部、且位于所述心室段和所述动脉段之间的单向瓣膜(18),所述单向瓣膜(18)的单向导通方向为由心室段指向动脉段。 3. The left ventricular assist device according to claim 1, characterized in that said ventricular side of the suction member is disposed in the interior of the ventricle section, and located between said one-way valve and the arterial segment ventricular segments (18), the one-way valve unidirectional conducting direction (18) by pointing to segment ventricular arterial segment.
4.根据权利要求1-3任一项所述的左心室辅助装置,其特征在于,还包括与所述外管(12)的远心端连接的接头(11),所述接头(11)用于连接所述外部驱动装置。 Left ventricular assist device according to claim any one of claims 1-3, characterized in that, further comprising a connector (11) and the outer tube (12) connected to a distal end, said joint (11) for connecting the external drive means.
5.根据权利要求4所述的左心室辅助装置,其特征在于,所述接头(11)包括第一分支管(111)和第二分支管(112),所述第一分支管(111)与所述外部驱动装置连接; 还包括导丝腔(13),导丝腔(13)贯穿于所述外管(12)的内部,所述导丝腔(13)的近心端与所述外管(12)的近心端密封固定,并伸出所述外管(12)的近心端,所述导丝腔(13)的远心端与所述第二分支管(112)的端部密封固定,并与外部连通。 The left ventricular assist device according to claim 4, characterized in that the coupling (11) comprises a first branch pipe (111) and a second branch pipe (112), said first branch pipe (111) connected to the external drive means; further comprising a guide wire lumen (13), the guide wire lumen (13) through the inside of the outer tube (12), said guidewire lumen (13) and said proximal end the proximal end of the outer tube (12) is sealed and fixed, and projecting said outer tube (12) of the proximal end of the guide wire lumen (13) of the distal end and the second branch pipe (112) end seal is fixed, and communicated with the outside.
6.根据权利要求4所述的左心室辅助装置,其特征在于,还包括导丝腔(13),所述导丝腔(13)固定在所述外管(12)的近心端的外壁上。 6. Left ventricular assist device according to claim 4, characterized in that, further comprising a guide wire lumen (13), said guidewire lumen (13) fixed to the tube (12) of the proximal end of the outer wall of the outer .
7.根据权利要求5或6所述的左心室辅助装置,其特征在于,所述导丝腔(13)的近心端具有向远心端方向弯曲的圈状结构(131)。 7. A left ventricular assist device of claim 5 or claim 6, wherein the proximal end of the guide wire lumen (13) has a curved direction to the distal end of the ring-shaped structure (131).
8.根据权利要求1-3任一项所述的左心室辅助装置,其特征在于,还包括设置在所述外管(12)上且位于所述心室段和所述动脉段之间的显影示标(16)。 8. A left ventricular assist device according to any one of claims 1-3, characterized in that, further comprising a tube set (12) and located on the outside of the developing section between the ventricle and the arterial segment shows standard (16).
9.根据权利要求1-3任一项所述的左心室辅助装置,其特征在于,所述外管(12)为单层结构,所述单层结构为金属网管;或者,所述外管为多层结构,由内至外依次包括内层(124)、中间层(122)和外层(123),所述内层(124)为聚四氟乙烯膜,所述中间层(122)为钢丝网或弹簧,所述外层(123)为尼龙层。 9. A left ventricular assist device according to any one of claims 1-3, wherein said outer tube (12) is a single layer, the single layer structure is a metal mesh; or, the outer tube a multilayer structure, from inside to outside, comprises an inner layer (124), intermediate layer (122) and an outer layer (123), said inner layer (124) is a polytetrafluoroethylene film, said intermediate layer (122) of steel mesh or spring, the outer layer (123) of a nylon layer.
10.根据权利要求1-3任一项所述的左心室辅助装置,其特征在于,所述外管(12)的心室段与所述动脉段之间的夹角135°〜155°。 10. Left ventricular assist device according to any one of claims 1-3, characterized in that, between the outer tube (12) section and the ventricle arterial segment angle of 135 ° ~155 °.
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