CN107626008A - The outlet connecting mechanism and its assemble method of a kind of artificial blood pump - Google Patents
The outlet connecting mechanism and its assemble method of a kind of artificial blood pump Download PDFInfo
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- CN107626008A CN107626008A CN201711046946.1A CN201711046946A CN107626008A CN 107626008 A CN107626008 A CN 107626008A CN 201711046946 A CN201711046946 A CN 201711046946A CN 107626008 A CN107626008 A CN 107626008A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/857—Implantable blood tubes
- A61M60/859—Connections therefor
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Abstract
Description
技术领域technical field
本发明涉及医疗器械，尤其涉及一种人工血泵的出口连接机构及其组装方法。The invention relates to medical equipment, in particular to an outlet connection mechanism of an artificial blood pump and an assembly method thereof.
背景技术Background technique
人工血泵是一种连接在心室与血管之间，用于辅助患有严重心室功能不足或心脏衰竭患者以提供一定血液流量和血压的一种装置。人工血泵出口通过人工血管与人体主血管相连接，对于血泵与人工血管连接的方式有很高的要求：不仅要保证连接处的密封性，也要保证血液通道的流畅与光滑,避免产生溶血和血栓等问题。另外血泵出口的压力较高，连接机构需要满足该压力要求。An artificial blood pump is a device connected between the ventricle and blood vessels to assist patients with severe ventricular insufficiency or heart failure to provide a certain blood flow and blood pressure. The outlet of the artificial blood pump is connected to the main blood vessel of the human body through the artificial blood vessel. There are high requirements for the connection between the blood pump and the artificial blood vessel: not only the sealing of the connection must be ensured, but also the smoothness and smoothness of the blood channel must be ensured to avoid problems such as hemolysis and thrombosis. In addition, the pressure at the outlet of the blood pump is relatively high, and the connecting mechanism needs to meet the pressure requirement.
同时，为了缩短植入时间，提高手术效率，要保证连接的快速性和简单可操作性。因此，连接机构应该简单可靠，零件数量应尽量少，降低出现失误操作的概率。At the same time, in order to shorten the implantation time and improve the operation efficiency, it is necessary to ensure the rapidity and simple operability of the connection. Therefore, the connection mechanism should be simple and reliable, and the number of parts should be as small as possible to reduce the probability of misoperation.
现有的人工血泵出口连接方式大都是将人工血管套在血泵出口管外部，然后用卡环将人工血管卡在血泵出口，并用螺栓将卡环锁紧。这种连接机构需要加工出适配的螺栓，而且螺栓很小，在手术过程中要将螺栓穿入卡环的孔中,然后拧紧螺栓，操作不是很方便；同时，螺栓单独作为一个部件，在操作时有可能由于操作人员的失误而掉入到胸腔内部，增加手术的难度。Most of the existing methods of connecting the outlet of the artificial blood pump are to cover the artificial blood vessel outside the outlet pipe of the blood pump, then clamp the artificial blood vessel on the outlet of the blood pump with a snap ring, and lock the snap ring with bolts. This connection mechanism needs to process suitable bolts, and the bolts are very small. During the operation, the bolts must be inserted into the holes of the snap ring, and then the bolts are tightened, which is not very convenient to operate; During the operation, it may fall into the chest cavity due to the operator's mistake, which increases the difficulty of the operation.
发明内容Contents of the invention
为了解决现有技术中的问题，本发明提供了一种人工血泵的出口连接机构及其组装方法。In order to solve the problems in the prior art, the present invention provides an outlet connection mechanism of an artificial blood pump and an assembly method thereof.
本发明提供了一种人工血泵的出口连接机构，包括第一部分和第二部分，所述第一部分包括人工血泵和与所述人工血泵连接的血泵出口转接件，所述第二部分包括人工血管、与所述人工血管连接的人工血管套管和锁紧环，所述锁紧环设置在所述人工血管套管上，所述锁紧环与所述人工血管套管为轴向固定、周向活动连接，所述锁紧环与所述血泵出口转接件通过螺纹连接。The present invention provides an outlet connection mechanism of an artificial blood pump, comprising a first part and a second part, the first part includes an artificial blood pump and a blood pump outlet adapter connected to the artificial blood pump, the second The part includes artificial blood vessel, artificial blood vessel sleeve connected with the artificial blood vessel and a locking ring, the locking ring is arranged on the artificial blood vessel sleeve, and the locking ring and the artificial blood vessel sleeve are shafts The locking ring is connected with the blood pump outlet adapter through threads.
作为本发明的进一步改进，所述人工血管套管上设有定位销，所述血泵出口转接件上设有与所述定位销相配合的定位孔。As a further improvement of the present invention, the artificial blood vessel sleeve is provided with a positioning pin, and the blood pump outlet adapter is provided with a positioning hole matching the positioning pin.
作为本发明的进一步改进，所述定位孔至少有二个并绕所述血泵出口转接件的周向间隔均匀设置。As a further improvement of the present invention, there are at least two positioning holes and are evenly spaced around the circumference of the blood pump outlet adapter.
作为本发明的进一步改进，所述人工血管的端部的外侧面设有第一锥部，所述人工血管套管的端部的内侧面设有第二锥部，所述第一锥部与所述第二锥部相贴合。As a further improvement of the present invention, the outer surface of the end of the artificial blood vessel is provided with a first tapered portion, the inner surface of the end of the artificial blood vessel sleeve is provided with a second tapered portion, and the first tapered portion and The second tapered portion fits together.
作为本发明的进一步改进，所述人工血管的端部的内侧面设有第一锥部，所述人工血管套管的端部的外侧面设有第二锥部，所述第一锥部与所述第二锥部相贴合。As a further improvement of the present invention, the inner surface of the end of the artificial blood vessel is provided with a first taper, the outer surface of the end of the artificial blood vessel sleeve is provided with a second taper, and the first taper and The second tapered portion fits together.
作为本发明的进一步改进，所述人工血管与所述人工血管套管的对接处套设有人工血管固定套，所述所述人工血管套管的外侧面设有环形凸起，所述环形凸起与所述人工血管固定套的内侧面压紧配合。As a further improvement of the present invention, an artificial blood vessel fixing sleeve is sleeved at the junction of the artificial blood vessel and the artificial blood vessel sleeve, and an annular protrusion is provided on the outer surface of the artificial blood vessel sleeve, and the annular protrusion Press and fit with the inner surface of the artificial blood vessel fixing sleeve.
作为本发明的进一步改进，所述人工血管固定套外套设有人工血管保护罩，所述人工血管保护罩外套设有卡箍。As a further improvement of the present invention, an artificial blood vessel protection cover is provided over the artificial blood vessel fixing sleeve, and a clamp is provided over the artificial blood vessel protection cover.
作为本发明的进一步改进，所述锁紧环上设有内螺纹，所述血泵出口转接件上设有与所述内螺纹相配合的外螺纹。As a further improvement of the present invention, the locking ring is provided with an internal thread, and the blood pump outlet adapter is provided with an external thread matching the internal thread.
本发明还提供了一种人工血泵的出口连接机构的组装方法，包括以下步骤：The present invention also provides a method for assembling an outlet connection mechanism of an artificial blood pump, comprising the following steps:
S1、将人工血泵和血泵出口转接件组装为第一部分，将人工血管、人工血管套管和锁紧环组装为第二部分，将锁紧环安装在人工血管套管上，使锁紧环可以相对人工血管套管旋转，将人工血管、人工血管套管对接；S1. Assemble the artificial blood pump and blood pump outlet adapter into the first part, assemble the artificial blood vessel, artificial blood vessel sleeve and locking ring into the second part, install the locking ring on the artificial blood vessel sleeve, and make the lock The tightening ring can be rotated relative to the artificial blood vessel casing to connect the artificial blood vessel and the artificial blood vessel casing;
S2、将人工血管套管的定位销插入血泵出口转接件的定位孔内，旋转锁紧环，使锁紧环与血泵出口转接件进行螺纹紧固连接。S2. Insert the positioning pin of the artificial blood vessel sleeve into the positioning hole of the outlet adapter of the blood pump, and rotate the locking ring so that the locking ring and the outlet adapter of the blood pump are threaded and fastened.
作为本发明的进一步改进，第二部分的组装过程为：As a further improvement of the present invention, the assembly process of the second part is:
A、将锁紧环套在人工血管套管上，使锁紧环可以相对人工血管套管旋转，将人工血管、人工血管套管对接；A. Put the locking ring on the artificial blood vessel sleeve, so that the locking ring can rotate relative to the artificial blood vessel sleeve, and dock the artificial blood vessel and the artificial blood vessel sleeve;
B、在人工血管外侧套入人工血管固定套，使人工血管固定套位于人工血管、人工血管套管的对接处，通过铆接将人工血管固定套固定在人工血管套管上；B. Put the artificial blood vessel fixing sleeve on the outside of the artificial blood vessel, so that the artificial blood vessel fixing sleeve is located at the joint of the artificial blood vessel and the artificial blood vessel sleeve, and fix the artificial blood vessel fixing sleeve on the artificial blood vessel sleeve by riveting;
C、将人工血管保护罩套在人工血管固定套上，将卡箍套在人工血管保护罩上。C. Put the artificial blood vessel protection cover on the artificial blood vessel fixing sleeve, and put the clamp on the artificial blood vessel protection cover.
本发明的有益效果是：通过上述方案，避免了螺栓的使用，操作较为方便，操作难度较低，连接结构简单、可靠。The beneficial effects of the present invention are: through the above scheme, the use of bolts is avoided, the operation is relatively convenient, the operation difficulty is low, and the connection structure is simple and reliable.
附图说明Description of drawings
图1是本发明一种人工血泵的出口连接机构的分解示意图。Fig. 1 is an exploded schematic diagram of an outlet connection mechanism of an artificial blood pump according to the present invention.
图2是本发明一种人工血泵的出口连接机构的锁紧环的装配示意图。Fig. 2 is an assembly diagram of a locking ring of an outlet connection mechanism of an artificial blood pump according to the present invention.
图3是本发明一种人工血泵的出口连接机构的第二部分的装配示意图。Fig. 3 is an assembly diagram of the second part of the outlet connection mechanism of an artificial blood pump according to the present invention.
图4是本发明一种人工血泵的出口连接机构的第二部分的剖面示意图。Fig. 4 is a schematic cross-sectional view of the second part of the outlet connection mechanism of an artificial blood pump according to the present invention.
图5是本发明一种人工血泵的出口连接机构的锥面配合示意图。Fig. 5 is a schematic diagram of taper surface fitting of an outlet connection mechanism of an artificial blood pump according to the present invention.
具体实施方式detailed description
下面结合附图说明及具体实施方式对本发明作进一步说明。The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.
如图1至图5所示，一种人工血泵的出口连接机构，包括第一部分101和第二部分102，所述第一部分101包括人工血泵1和与所述人工血泵1连接的血泵出口转接件2，所述第二部分102包括人工血管6、与所述人工血管6连接的人工血管套管7和锁紧环3，所述锁紧环3设置在所述人工血管套管7上，所述锁紧环3与所述人工血管套管7为轴向固定、周向活动连接，即所述锁紧环3可以绕所述人工血管套管7旋转，所述锁紧环3与所述血泵出口转接件2通过螺纹连接。As shown in FIGS. 1 to 5 , an outlet connection mechanism of an artificial blood pump includes a first part 101 and a second part 102 , the first part 101 includes an artificial blood pump 1 and a blood pump connected to the artificial blood pump 1 . The pump outlet adapter 2, the second part 102 includes the artificial blood vessel 6, the artificial blood vessel sleeve 7 connected with the artificial blood vessel 6 and the locking ring 3, the locking ring 3 is arranged on the artificial blood vessel sleeve On the pipe 7, the locking ring 3 and the artificial blood vessel sleeve 7 are axially fixed and circumferentially movable, that is, the locking ring 3 can rotate around the artificial blood vessel sleeve 7, and the locking The ring 3 is threadedly connected with the blood pump outlet adapter 2 .
如图1至图5所示，在进行人工血泵植入之前,人工血泵1和血泵出口转接件2通过粘接或焊接方式使之形成一个整体。As shown in FIGS. 1 to 5 , before the artificial blood pump is implanted, the artificial blood pump 1 and the blood pump outlet adapter 2 are formed into a whole by bonding or welding.
如图1至图5所示，所述人工血管套管7上设有定位销71，所述血泵出口转接件2上设有与所述定位销71相配合的定位孔21。As shown in FIGS. 1 to 5 , the artificial blood vessel sleeve 7 is provided with a positioning pin 71 , and the blood pump outlet adapter 2 is provided with a positioning hole 21 matching the positioning pin 71 .
如图1至图5所示，所述定位孔21至少有二个并绕所述血泵出口转接件2的周向间隔均匀设置。血泵出口转接件2与人工血管套管7连接时，需要进行定位，防止人工血管6旋转和扭曲。图2是该连接机构的定位结构。图2中，在血泵出口转接件2上有多个定位孔21，可与人工血管套管7的右侧的一根定位销71相配合，起到定位的作用，防止在拧紧锁紧环3时，人工血管套管7转动（防止人工血管6转动）；同时，通过定位销71与不同定位孔21的配合，可以调整血泵的位置。As shown in FIGS. 1 to 5 , there are at least two positioning holes 21 and they are evenly spaced around the circumference of the blood pump outlet adapter 2 . When the blood pump outlet adapter 2 is connected to the artificial blood vessel sleeve 7, it needs to be positioned to prevent the artificial blood vessel 6 from rotating and twisting. Figure 2 is the positioning structure of the connection mechanism. In Fig. 2, there are a plurality of positioning holes 21 on the blood pump outlet adapter 2, which can cooperate with a positioning pin 71 on the right side of the artificial blood vessel sleeve 7 to play a positioning role and prevent the screw from being tightened and locked. 3, the artificial blood vessel sleeve 7 rotates (to prevent the artificial blood vessel 6 from rotating); at the same time, the position of the blood pump can be adjusted through the cooperation of the positioning pin 71 and the different positioning holes 21.
如图1至图5所示，所述人工血管6的端部的外侧面设有第一锥部61，所述人工血管套管7的端部的内侧面设有第二锥部73，所述第一锥部61与所述第二锥部73相贴合。或者采用另一相反结构：所述人工血管6的端部的内侧面设有第一锥部，所述人工血管套管7的端部的外侧面设有第二锥部，所述第一锥部与所述第二锥部相贴合。在管道连接的部分均采用锥面，使得管径没有突变，降低形成血栓的风险；管道的配合面也采用锥面配合，密封性更好，同时便于装配。As shown in Figures 1 to 5, the outer surface of the end of the artificial blood vessel 6 is provided with a first tapered portion 61, and the inner surface of the end of the artificial blood vessel sleeve 7 is provided with a second tapered portion 73, so The first taper portion 61 is attached to the second taper portion 73 . Or adopt another opposite structure: the inner surface of the end of the artificial blood vessel 6 is provided with a first taper, the outer surface of the end of the artificial blood vessel sleeve 7 is provided with a second taper, and the first taper The part fits with the second tapered part. Cone surfaces are used in the connecting parts of the pipes, so that the diameter of the pipes does not change suddenly, and the risk of thrombus formation is reduced; the matching surfaces of the pipes are also fitted with tapered surfaces, which has better sealing performance and is easy to assemble.
如图1至图5所示，所述人工血管6与所述人工血管套管7的对接处套设有人工血管固定套8，所述所述人工血管套管7的外侧面设有环形凸起73，所述环形凸起73与所述人工血管固定套8的内侧面压紧配合。As shown in Figures 1 to 5, an artificial blood vessel fixing sleeve 8 is sleeved at the junction of the artificial blood vessel 6 and the artificial blood vessel sleeve 7, and an annular protrusion is provided on the outer surface of the artificial blood vessel sleeve 7. Protrusion 73, said annular protrusion 73 is press-fitted with the inner surface of said artificial blood vessel fixing sleeve 8.
如图1至图5所示，所述人工血管固定套8外套设有人工血管保护罩5，所述人工血管保护罩5外套设有卡箍4。As shown in FIG. 1 to FIG. 5 , the artificial blood vessel cover 8 is covered with an artificial blood vessel protective cover 5 , and the artificial blood vessel protective cover 5 is covered with a clamp 4 .
如图1至图5所示，所述锁紧环3上设有内螺纹，所述血泵出口转接件2上设有与所述内螺纹相配合的外螺纹。As shown in FIGS. 1 to 5 , the locking ring 3 is provided with an internal thread, and the blood pump outlet adapter 2 is provided with an external thread matching the internal thread.
一种人工血泵的出口连接机构的组装方法，包括以下步骤：A method for assembling an outlet connection mechanism of an artificial blood pump, comprising the following steps:
S1、将人工血泵1和血泵出口转接件2组装为第一部分101，将人工血管6、人工血管套管7和锁紧环3组装为第二部分102，将锁紧环3安装在人工血管套管7上，使锁紧环3可以相对人工血管套管7旋转，将人工血管6、人工血管套管7对接；S1. Assemble the artificial blood pump 1 and the blood pump outlet adapter 2 into the first part 101, assemble the artificial blood vessel 6, the artificial blood vessel sleeve 7 and the locking ring 3 into the second part 102, and install the locking ring 3 on On the artificial blood vessel sleeve 7, the locking ring 3 can be rotated relative to the artificial blood vessel sleeve 7, and the artificial blood vessel 6 and the artificial blood vessel sleeve 7 are docked;
S2、将人工血管套管7的定位销71插入血泵出口转接件2的定位孔21内，旋转锁紧环3，使锁紧环3与血泵出口转接件2进行螺纹紧固连接。S2. Insert the positioning pin 71 of the artificial blood vessel sleeve 7 into the positioning hole 21 of the blood pump outlet adapter 2, and rotate the locking ring 3, so that the locking ring 3 and the blood pump outlet adapter 2 are threaded and fastened. .
第二部分102的组装过程为：The assembly process of the second part 102 is:
A、将锁紧环3套在人工血管套管7上，使锁紧环3可以相对人工血管套管7旋转，将人工血管6、人工血管套管7对接；A. Put the locking ring 3 on the artificial blood vessel sleeve 7, so that the locking ring 3 can rotate relative to the artificial blood vessel sleeve 7, and dock the artificial blood vessel 6 and the artificial blood vessel sleeve 7;
B、在人工血管6外侧套入人工血管固定套8，使人工血管固定套8位于人工血管6、人工血管套管7的对接处，通过圆点铆接（铆接位置如图3所示）将人工血管固定套8固定在人工血管套管7上；B. Put the artificial blood vessel fixing sleeve 8 on the outside of the artificial blood vessel 6, so that the artificial blood vessel fixing sleeve 8 is located at the joint of the artificial blood vessel 6 and the artificial blood vessel sleeve 7, and the artificial blood vessel is riveted by dot riveting (the riveting position is shown in Figure 3). The blood vessel fixing sleeve 8 is fixed on the artificial blood vessel sleeve 7;
C、将人工血管保护罩5套在人工血管固定套8上，将卡箍4套在人工血管保护罩5上。C. Put the artificial blood vessel protective cover 5 on the artificial blood vessel fixing sleeve 8 , and put the clip 4 on the artificial blood vessel protective cover 5 .
本发明提供的一种人工血泵的出口连接机构及其组装方法，具有以下优点：The outlet connection mechanism of an artificial blood pump and its assembly method provided by the present invention have the following advantages:
1.连接可靠，密封性好。该人工血泵出口连接机构采用螺纹连接，连接可靠；连接位置采用锥面，密封性好。1. Reliable connection and good sealing. The outlet connection mechanism of the artificial blood pump adopts screw connection, and the connection is reliable; the connection position adopts a conical surface, and the sealing performance is good.
2.结构简单，操作方便，减少手术时间。该连接机构的所有的零件均集成到一起，没有外部的螺栓等附件，使得整个结构更加简单；在手术过程中只需将人工血管6的锁紧环3套在血泵出口转接件2，然后旋转拧紧即可，易于操作，且时间很短。2. The structure is simple, the operation is convenient, and the operation time is reduced. All the parts of the connection mechanism are integrated together, without external bolts and other accessories, making the whole structure simpler; during the operation, only the locking ring 3 of the artificial blood vessel 6 is set on the blood pump outlet adapter 2, Then just turn and tighten, easy to operate, and the time is very short.
3.连接角度可调，避免人工血管扭曲。该连接机构采用一个定位销71和六个（或多个）定位孔21任意配合，便于在进行人工血泵植入手术时调整血泵的植入角度，避免人工血管出现扭曲的现象。3. The connection angle is adjustable to avoid distortion of the artificial blood vessel. The connecting mechanism adopts one positioning pin 71 and six (or more) positioning holes 21 to cooperate freely, so as to facilitate the adjustment of the implantation angle of the blood pump during the artificial blood pump implantation operation and avoid distortion of the artificial blood vessel.
4.血液兼容性好。该连接机构管径变化的位置均采用锥面过渡，使得流到平滑，避免产生溶血和血栓。4. Good blood compatibility. The changing positions of the pipe diameters of the connection mechanism all adopt tapered surface transitions to make the flow smooth and avoid hemolysis and thrombus.
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.
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