CN112998684B - Blood flow dynamic monitor - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明属于血管监测技术领域，特别涉及一种血流动态监测器。The invention belongs to the technical field of blood vessel monitoring, in particular to a blood flow dynamic monitor.
背景技术Background technique
公开该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解，而不必然被视为承认或以任何形式暗示该信息构成已经成为本领域一般技术人员所公知的现有技术。The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.
在外科手术过程中经常需要对血管进行吻合，对于吻合后的血管，需要判断是不是通的，只有通的血管才能更好地愈合、恢复。由于吻合后的血管内膜进行修复时，内皮细胞需要跨越损伤区域，使吻合的两侧连成一个光滑的面，所以内皮细胞的修复周期一般为7到10天，所以在血管修复的整个过程中都需要保证血管的畅通，如果血管不畅通，会造成吻合血管远端组织不供血，出现坏死。During the surgical operation, it is often necessary to anastomose the blood vessels. For the blood vessels after anastomosis, it is necessary to judge whether they are connected. Only the blood vessels that are connected can heal and recover better. Since the endothelial cells need to cross the damaged area to connect the two sides of the anastomosis to form a smooth surface when the intima of the blood vessel is repaired after anastomosis, the repair cycle of endothelial cells is generally 7 to 10 days, so in the whole process of blood vessel repair It is necessary to ensure the unimpeded flow of blood vessels. If the blood vessels are not unblocked, the distal tissue of the anastomotic blood vessel will not supply blood and cause necrosis.
对于一些能够通过体表观察的手术，如皮瓣移植、断肢(断指)再植等，传统的判断血管通与不通的指标一般为主观判断指标，如毛细血管反应时间、皮肤颜色、皮肤张力、皮肤温度等，但是该种判断指标完全依赖于临床经验，没有统一的标准，准确性较差，而且具有一定的滞后性，也无法进行持续的监测。而，对于一些内脏和深在的组织移植，如肝移植、肾移植、肺移植、冠状动脉搭桥等等，只能通过一些间接的指标，如胆汁分泌、无尿、呼吸异常、心前区疼痛等等，一则监测不直接，二则滞后时间太长，后果严重。虽然可以通过多普勒超声在体外探测血管是否畅通，但是在术后危险期内(一般为术后7-10天)，患者不宜多活动，无法常规采用该种方式，更重要的是，它也难以对血管进行持续监测。For some operations that can be observed through the body surface, such as skin flap transplantation, replantation of amputated limbs (amputated fingers), etc., the traditional indicators for judging whether blood vessels are open or blocked are generally subjective indicators, such as capillary reaction time, skin color, skin color, etc. Tension, skin temperature, etc., but this kind of judgment index completely depends on clinical experience, there is no uniform standard, the accuracy is poor, and it has a certain hysteresis, and continuous monitoring cannot be carried out. However, for some visceral and deep tissue transplants, such as liver transplantation, kidney transplantation, lung transplantation, coronary artery bypass grafting, etc., only some indirect indicators can be used, such as bile secretion, anuria, abnormal breathing, and precordial pain Wait, one is that the monitoring is not direct, and the other is that the lag time is too long and the consequences are serious. Although Doppler ultrasound can be used to detect whether blood vessels are unobstructed in vitro, during the postoperative dangerous period (generally 7-10 days after surgery), patients should not be more active, and this method cannot be routinely used. More importantly, it Continuous monitoring of blood vessels is also difficult.
发明内容Contents of the invention
针对上述所存在的问题，本发明提出了一种血流动态监测器。In view of the above existing problems, the present invention proposes a hemodynamic monitor.
为解决以上技术问题，本发明的以下一个或多个实施例提供了如下技术方案：In order to solve the above technical problems, one or more embodiments of the present invention provide the following technical solutions:
本发明提供一种血流动态监测器，包括血管套管、探头固定座和探头，其中，The present invention provides a hemodynamic monitor, including a blood vessel sleeve, a probe holder and a probe, wherein,
所述血管套管用于套合于吻合后的血管上；The blood vessel sleeve is used to fit on the blood vessel after anastomosis;
探头固定座固定于所述血管套管的外壁，其包括探头固定座外层和探头固定座内层，探头固定座内层设置于探头固定座外层的内侧，探头固定座内层的中部设置有柱形凹槽，柱形凹槽的侧壁设置有内螺纹；The probe fixing seat is fixed on the outer wall of the blood vessel casing, which includes the outer layer of the probe fixing seat and the inner layer of the probe fixing seat, the inner layer of the probe fixing seat is arranged on the inner side of the outer layer of the probe fixing seat, and the middle part of the inner layer of the probe fixing seat There is a cylindrical groove, and the side wall of the cylindrical groove is provided with internal threads;
探头包括导丝和防护套，防护套套于导丝的外侧，探头一端的防护套设置有外螺纹，用于与所述柱形凹槽的内螺纹配合设置，探头的另一端用于与多普勒监测仪连接；The probe includes a guide wire and a protective sleeve. The protective sleeve is placed on the outside of the guide wire. The protective sleeve at one end of the probe is provided with an external thread for cooperating with the internal thread of the cylindrical groove. The other end of the probe is used for connecting with the Doppler Le monitor connection;
血管套管和探头固定座均由可降解材质制成，且探头固定座内层的降解速率大于探头固定座外层的降解速率。Both the vascular sleeve and the probe fixing seat are made of degradable materials, and the degradation rate of the inner layer of the probe fixing seat is greater than that of the outer layer of the probe fixing seat.
与现有技术相比，本发明的以上一个或多个技术方案取得了以下有益效果：Compared with the prior art, the above one or more technical solutions of the present invention have achieved the following beneficial effects:
本发明中，设置的血管套管套合于血管的外壁，采用多普勒检测仪可以实时检测吻合后血管内的血流情况，及时反馈血管的畅通情况，对于吻合后血管的顺利康复起到较为重要的作用。In the present invention, the set vascular sleeve is sleeved on the outer wall of the blood vessel, and the blood flow in the blood vessel after the anastomosis can be detected in real time by using a Doppler detector, and the smoothness of the blood vessel can be fed back in time, which plays a role in the smooth recovery of the blood vessel after the anastomosis. more important role.
导丝的外侧设置有防护套，防护套可以对导丝起到较好的防护作用，防止导丝暴露在体液环境中影响检测的准确性。同时，防护套与探头固定座内层之间螺纹连接，一方面可以对探头的端部进行密封，避免探头端部与体液直接接触，提高血流检测的准确性，另一方面，探头在使用完毕后，便于直接将探头从探头固定座内层反向拧下，回收探头。The outer side of the guide wire is provided with a protective sheath, which can better protect the guide wire and prevent the guide wire from being exposed to the body fluid environment and affect the accuracy of detection. At the same time, the thread connection between the protective cover and the inner layer of the probe fixing seat can seal the end of the probe on the one hand, avoid direct contact between the end of the probe and body fluid, and improve the accuracy of blood flow detection. On the other hand, the probe is in use After finishing, it is convenient to directly unscrew the probe from the inner layer of the probe holder in reverse direction, and recover the probe.
由于吻合后的血管较为脆弱，所以当血管恢复后，将探头从探头固定座上拧下的过程中，需要对血管施加较小的作用力，以防止对血管造成较大的损伤。探头固定座内层的降解速率大于探头固定座外层的降解速率，当对血管持续7-10天的血流监测后，此时探头固定座内层已经有了较大程度的降解，此时，将探头反向旋出时，仅需要施加较小的力就可以实现，对血管的损伤较小，甚至不会损伤到血管。Since the blood vessel after anastomosis is relatively fragile, when the blood vessel recovers, a small force needs to be applied to the blood vessel in the process of unscrewing the probe from the probe fixing seat, so as to prevent greater damage to the blood vessel. The degradation rate of the inner layer of the probe holder is greater than that of the outer layer of the probe holder. After monitoring the blood flow of the blood vessel for 7-10 days, the inner layer of the probe holder has been degraded to a large extent. , when the probe is unscrewed in the opposite direction, only a small force can be applied, and the damage to the blood vessel is small, and even the blood vessel will not be damaged.
血管套管和探头固定座均由可降解材质制成，使用完毕后，仅需要将探头回收，血管套管和探头固定座留置，经过一定时间后降解，可以避免对身体组织的二次破坏。Both the vascular sleeve and the probe holder are made of degradable materials. After use, only the probe needs to be recovered, and the vascular sleeve and probe holder are left in place. After a certain period of time, they degrade and can avoid secondary damage to body tissues.
附图说明Description of drawings
构成本发明的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention.
图1为本发明实施例的血流动态监测器的整体结构示意图；FIG. 1 is a schematic diagram of the overall structure of a blood flow dynamic monitor according to an embodiment of the present invention;
图2为本发明实施例的探头与套管之间的配合结构示意图；Fig. 2 is a schematic diagram of the cooperation structure between the probe and the casing according to the embodiment of the present invention;
图3为本发明实施例的血流动态监测器的俯视图结构示意图；3 is a schematic structural diagram of a top view of a blood flow dynamic monitor according to an embodiment of the present invention;
图4为图3中A处的放大图；Fig. 4 is the enlarged view of place A in Fig. 3;
图5为本发明的一种实施例的套管的截面示意图；Fig. 5 is a schematic cross-sectional view of a casing according to an embodiment of the present invention;
图6为本发明的另一种实施例的套管的截面示意图；Fig. 6 is a schematic cross-sectional view of a casing according to another embodiment of the present invention;
图7为本发明的血流动态监测器的安装结构示意图。Fig. 7 is a schematic diagram of the installation structure of the hemodynamic monitor of the present invention.
其中，1、扳手，2、稳固套，3、缝合座，4、皮肤，5、探头，6、探头固定座外层，7、耦合剂，8、血管套管，9、探头固定座内层，10、缝合孔，11、定位箭头，12、卡合齿，13、卡爪，14、第二凹槽，15、旋出箭头，16、皮下组织，17、显示器，18、血管。Among them, 1. Wrench, 2. Stabilizing sleeve, 3. Suture seat, 4. Skin, 5. Probe, 6. Outer layer of probe holder, 7. Coupling agent, 8. Vascular sleeve, 9. Inner layer of probe holder , 10, suture hole, 11, positioning arrow, 12, engaging tooth, 13, claw, 14, second groove, 15, unscrewing arrow, 16, subcutaneous tissue, 17, monitor, 18, blood vessel.
具体实施方式Detailed ways
应该指出，以下详细说明都是示例性的，旨在对本发明提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本发明所属技术领域的普通技术人员通常理解的相同含义。It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本发明的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.
第一方面，本发明提供一种血流动态监测器，包括血管套管、探头固定座和探头，其中，In the first aspect, the present invention provides a blood flow dynamic monitor, including a vascular sleeve, a probe holder and a probe, wherein,
所述血管套管用于套合于吻合后的血管上；The blood vessel sleeve is used to fit on the blood vessel after anastomosis;
探头固定座固定于所述血管套管的外壁，其包括探头固定座外层和探头固定座内层，探头固定座内层设置于探头固定座外层的内侧，探头固定座内层的中部设置有柱形凹槽，柱形凹槽的侧壁设置有内螺纹；The probe fixing seat is fixed on the outer wall of the blood vessel casing, which includes the outer layer of the probe fixing seat and the inner layer of the probe fixing seat, the inner layer of the probe fixing seat is arranged on the inner side of the outer layer of the probe fixing seat, and the middle part of the inner layer of the probe fixing seat There is a cylindrical groove, and the side wall of the cylindrical groove is provided with internal threads;
探头包括导丝和防护套，防护套套于导丝的外侧，探头一端的防护套设置有外螺纹，用于与所述柱形凹槽的内螺纹配合设置，探头的另一端用于与多普勒监测仪连接；The probe includes a guide wire and a protective sleeve. The protective sleeve is placed on the outside of the guide wire. The protective sleeve at one end of the probe is provided with an external thread for cooperating with the internal thread of the cylindrical groove. The other end of the probe is used for connecting with the Doppler Le monitor connection;
血管套管和探头固定座均由可降解材质制成，且探头固定座内层的降解速率大于探头固定座外层的降解速率。Both the vascular sleeve and the probe fixing seat are made of degradable materials, and the degradation rate of the inner layer of the probe fixing seat is greater than that of the outer layer of the probe fixing seat.
在一些实施例中，探头固定座外层的材质为聚-L-乳酸、聚-DL-乳酸、聚乙交酯或聚丙交酯、多聚左旋乳酸、PDS(1,4-二氧杂环-2-己酮的开环聚合物)、聚甘醇碳酸或PCL(聚己内酯)。In some embodiments, the material of the outer layer of the probe holder is poly-L-lactic acid, poly-DL-lactic acid, polyglycolide or polylactide, poly-L-lactic acid, PDS (1,4-dioxane -ring-opening polymer of 2-hexanone), polyglycol carbonate or PCL (polycaprolactone).
进一步的，头固定座内层的材质为聚乳酸(PLA)、聚乙醇酸、聚羟基乙酸(PGA)、聚乳酸羟基乙酸等。Further, the inner layer of the head holder is made of polylactic acid (PLA), polyglycolic acid, polyglycolic acid (PGA), polylactic acid glycolic acid, and the like.
进一步的，探头端部的防护套外侧的外螺纹的材质为聚乳酸(PLA)、聚乙醇酸、聚羟基乙酸(PGA)或聚乳酸羟基乙酸，与探头固定座内层的材质均为易降解材质，在该种情况下，探头在体内7-10内，探头的外螺纹和探头固定座内层均有一定程度的降解，质地变松，再反向拧出时，更易拧出。Further, the material of the external thread on the outer side of the protective sleeve at the probe end is polylactic acid (PLA), polyglycolic acid, polyglycolic acid (PGA) or polylactic acid glycolic acid, and the material of the inner layer of the probe holder is easy to degrade Material, in this case, the probe is within 7-10 of the body, the external thread of the probe and the inner layer of the probe holder are degraded to a certain extent, the texture becomes loose, and it is easier to unscrew when it is unscrewed in the opposite direction.
在一些实施例中，所述血管套管的周向分为2段或3段，当为2段时，两段均为刚性结构，为抱箍结构；当为3段时，依次为刚性-柔性-刚性设置，通过两侧刚性结构上的卡合结构固定于血管上。In some embodiments, the circumference of the vascular sleeve is divided into 2 or 3 sections. When there are 2 sections, both sections are rigid structures, which are hoop structures; when there are 3 sections, they are rigid- Flexible-rigid setting, fixed on the blood vessel through the snap-in structure on the rigid structure on both sides.
血管套管采用刚性-柔性-刚性设置时，由于柔性结构具有一定的弹性，可以使血管套管更好地贴附于血管的外壁。When the vascular sleeve adopts a rigid-flexible-rigid configuration, the flexible structure has a certain degree of elasticity, so that the vascular sleeve can be better attached to the outer wall of the blood vessel.
血管套管的材质可以为聚乳酸(PLA)、聚乙醇酸、聚羟基乙酸(PGA)、聚乳酸羟基乙酸。The material of the vascular sleeve can be polylactic acid (PLA), polyglycolic acid, polyglycolic acid (PGA), polylactic acid glycolic acid.
在一些实施例中，所述探头上设置有扳手。用于对探头进行旋转。In some embodiments, a wrench is provided on the probe. Used to rotate the probe.
进一步的，还包括缝合座和稳固套，缝合座和稳固套均套合于探头防护套层的外侧，且缝合座与稳固套之间固定连接，缝合座和/或稳固套上均设置有探头防护套的卡合固定结构。Further, it also includes a suture seat and a stabilizing sleeve, both of which are fitted on the outer side of the protective cover layer of the probe, and are fixedly connected between the suture seat and the stabilizing sleeve, and probes are arranged on the suture seat and/or the stabilizing sleeve The fastening and fixing structure of the protective cover.
更进一步的，所述缝合座上设置有若干缝合孔，若干缝合孔沿缝合座的周向设置。Furthermore, several suture holes are provided on the suture seat, and the several suture holes are arranged along the circumference of the suture seat.
更进一步的，所述卡合固定结构包括卡爪、第一凹槽和第二凹槽，第一凹槽设置于稳固套和/或缝合座的内壁，第二凹槽设置于探头防护套的外壁，且第一凹槽和第二凹槽开口相对，第一凹槽的内壁为弧形内壁，弧形内壁设置有卡合齿；Furthermore, the engaging and fixing structure includes claws, a first groove and a second groove, the first groove is arranged on the inner wall of the stabilizing sleeve and/or the suture seat, and the second groove is arranged on the inner wall of the probe protective cover. The outer wall, and the opening of the first groove and the second groove are opposite, the inner wall of the first groove is an arc-shaped inner wall, and the arc-shaped inner wall is provided with engaging teeth;
所述卡爪至少包括旋转固定端、第一卡合端和第二卡合端，卡爪通过旋转固定端连接至稳固套和/或缝合座的内壁上，第一卡合端与第一凹槽内壁的卡合齿配合设置，第二卡合端与第二凹槽配合设置。The claw includes at least a rotating fixed end, a first engaging end and a second engaging end, the claw is connected to the inner wall of the stabilizing sleeve and/or the suturing seat through the rotating fixed end, and the first engaging end is connected to the first concave The engaging teeth on the inner wall of the groove are arranged in cooperation, and the second engaging end is arranged in cooperation with the second groove.
再进一步的，所述第二凹槽为弧形凹槽。Still further, the second groove is an arc-shaped groove.
在对血管血流进行持续监测时，需要保证探头的稳定，即防止探头的旋转，以避免探头从探头固定座中旋出，或探头的旋转对血管造成扭转伤害。所以，需要将探头进行固定，此时，卡爪通过旋转固定端连接于稳固套或/和缝合座的内壁上，卡爪在卡合齿和第二凹槽的限位作用下进行固定。当需要将探头从探头固定座上拧下时，对探头上的扳手施加一定的作用力，通过第二凹槽将作用力施加到卡爪上，使卡爪克服卡合齿的限位阻力，绕旋转固定端旋转，直至使得卡爪从第二凹槽中旋出，部分或全部旋入第一凹槽内，并在卡合齿的作用下固定在第一凹槽内，此时，探头即可在旋转作用力下旋转，进而从探头固定座中旋出。When continuously monitoring blood flow in blood vessels, it is necessary to ensure the stability of the probe, that is, to prevent the probe from rotating, so as to prevent the probe from being rotated out of the probe fixing seat, or the rotation of the probe may cause torsion damage to the blood vessel. Therefore, the probe needs to be fixed. At this time, the claws are connected to the inner wall of the stabilization sleeve or/and the suture seat through the rotating fixed end, and the claws are fixed under the limiting action of the engaging teeth and the second groove. When the probe needs to be unscrewed from the probe fixing seat, a certain force is applied to the wrench on the probe, and the force is applied to the claw through the second groove, so that the claw overcomes the limit resistance of the engaging teeth, Rotate around the rotating fixed end until the jaws are unscrewed from the second groove, partially or completely screwed into the first groove, and fixed in the first groove under the action of the engaging teeth. At this time, the probe That is, it can be rotated under the rotating force, and then screwed out from the probe holder.
卡爪、第一凹槽和第二凹槽均沿轴向设置。The claws, the first groove and the second groove are all arranged along the axial direction.
采用该种设置方式，可以在一定距离上允许探头相对于稳固座和缝合座的相对滑动，而不允许探头相对于稳固座和缝合座的相对转动。By adopting this arrangement, the relative sliding of the probe relative to the stable base and the suturing base can be allowed within a certain distance, but the relative rotation of the probe relative to the stable base and the suturing base is not allowed.
更进一步的，所述缝合座上设置有指示标记，指示标记包括旋出箭头和定位箭头。Furthermore, the suture seat is provided with indicator marks, and the indicator marks include unscrewing arrows and positioning arrows.
发明人在实践过程中发现，由于吻合后的血管较为脆弱，所以对探头旋转过程中的容错率较低，即，探头拧出时的旋转方向错误时，很容易对血管套管施加扭转作用力，进而对血管造成一定损伤；或如果探头还未从探头固定座内完全旋出，就开始向外拔探头，连带的部分会通过血管套管对血管施加一定的径向拉力，进而有可能对血管造成损伤。The inventor found in the course of practice that since the blood vessel after anastomosis is relatively fragile, the error tolerance rate during the rotation of the probe is low, that is, when the rotation direction of the probe is wrong when the probe is unscrewed, it is easy to apply torsional force to the vascular sleeve , thus causing some damage to the blood vessel; or if the probe is not fully unscrewed from the probe holder, and the probe is pulled out, the associated part will exert a certain radial pulling force on the blood vessel through the vascular sleeve, which may damage the blood vessel. Damage to blood vessels.
所以，探头的旋转方向和探头从探头固定座中旋出的程度为较为重要的控制因素。设置旋出箭头，可以提示医护人员探头的旋转方向，设置定位箭头，便于提示医护人员探头的旋转圈数，以便于判断将探头完全从探头固定座中旋出。旋转圈数可以通过判断探头上的扳手的旋转圈数确定，前提是，探头旋入探头固定座内的圈数已知。Therefore, the rotation direction of the probe and the degree to which the probe is unscrewed from the probe holder are relatively important controlling factors. Setting the unscrewing arrow can prompt the medical staff to rotate the probe, and setting the positioning arrow is convenient for prompting the medical staff to rotate the probe, so as to judge whether the probe is completely unscrewed from the probe fixing seat. The number of turns can be determined by judging the number of turns of the wrench on the probe, provided that the number of turns the probe is screwed into the probe holder is known.
在一些实施例中，血管套管的长度与血管的直径比为5-20:1。In some embodiments, the ratio of the length of the vessel sleeve to the diameter of the vessel is 5-20:1.
可以有效防止血管套管的扭转作用力对血管造成损伤。It can effectively prevent the torsion force of the blood vessel sleeve from damaging the blood vessel.
本发明提供所述血流动态监测器的使用方法，包括如下步骤：The present invention provides a method for using the hemodynamic monitor, comprising the following steps:
在探头固定座内层的底部注入设定量耦合剂，然后将探头的端部拧入探头固定座内，与耦合剂接触；Inject a set amount of couplant into the bottom of the inner layer of the probe holder, and then screw the end of the probe into the probe holder to contact with the couplant;
将血管套管套合于吻合后的血管的外侧；Sleeve the vascular sleeve on the outside of the anastomotic blood vessel;
将缝合座沿探头移动至合适位置后缝合于皮肤上，将探头通过缝合座固定于特定位置上，并使得探头的另一端与多普勒检测仪信号连接；通过多普勒检测仪检测血管内的血流信号。为了防止探头从稳固座向外滑动，可以通过医用胶带将探头粘贴于缝合座上，继而对探头进一步固定，防止其旋转或沿轴向移动。Move the suture seat along the probe to a suitable position and suture it on the skin, fix the probe at a specific position through the suture seat, and connect the other end of the probe to the signal of the Doppler detector; blood flow signal. In order to prevent the probe from sliding outward from the stable seat, the probe can be pasted on the suture seat with medical tape, and then the probe can be further fixed to prevent it from rotating or moving along the axial direction.
对血管血流监测完毕后，将医用胶带取下，按缝合座上的旋出箭头的指示方向旋转扳手，在定位箭头的指示作用下记录向外旋出的圈数，当探头完全从探头固定座中旋出后，将缝合座从皮肤上取下，同时将探头拔出。After monitoring the blood flow of the blood vessel, remove the medical tape, rotate the wrench in the direction indicated by the unscrew arrow on the suture seat, and record the number of outward turns under the direction of the positioning arrow. When the probe is completely fixed from the probe After the seat is unscrewed, the suture seat is removed from the skin, and the probe is pulled out at the same time.
实施例Example
如图1和图7所示，一种血流动态监测器，包括血管套管8、探头固定座和探头5，其中，所述血管套管8用于套合于吻合后的血管18上；As shown in Figures 1 and 7, a hemodynamic monitor includes a
如图2所示，探头固定座固定于所述血管套管的外壁，其包括探头固定座外层6和探头固定座内层9，探头固定座内层9设置于探头固定座外层6的内侧，探头固定座内层9的中部设置有柱形凹槽，柱形凹槽的侧壁设置有内螺纹；As shown in Figure 2, the probe fixing seat is fixed on the outer wall of the blood vessel sleeve, which includes the
探头5包括导丝和防护套，防护套套于导丝的外侧，探头一端的防护套设置有外螺纹，用于与所述柱形凹槽的内螺纹配合设置，探头的另一端用于与多普勒监测仪连接；The
血管套管8和探头固定座均由可降解材质制成，且探头固定座内层的降解速率大于探头固定座外层的降解速率。Both the
探头固定座外层的材质为聚-L-乳酸、聚-DL-乳酸、聚乙交酯或聚丙交酯、多聚左旋乳酸、PDS(1,4-二氧杂环-2-己酮的开环聚合物)、聚甘醇碳酸、PCL(聚己内酯)等。The outer layer of the probe holder is made of poly-L-lactic acid, poly-DL-lactic acid, polyglycolide or polylactide, poly-L-lactic acid, PDS (1,4-dioxane-2-hexanone) ring-opening polymer), polyglycol carbonate, PCL (polycaprolactone), etc.
探头固定座内层的材质为聚乳酸(PLA)、聚乙醇酸、聚羟基乙酸(PGA)、聚乳酸羟基乙酸。The inner layer of the probe holder is made of polylactic acid (PLA), polyglycolic acid, polyglycolic acid (PGA), and polylactic acid glycolic acid.
探头端部的防护套外侧的外螺纹的材质为聚乳酸(PLA)、聚乙醇酸、聚羟基乙酸(PGA)或聚乳酸羟基乙酸，与探头固定座内层的材质均为易降解材质，在该种情况下，探头在体内7-10内，探头的外螺纹和探头固定座内层均有一定程度的降解，质地变松，再反向拧出时，更易拧出。The material of the external thread on the outer side of the protective sleeve at the end of the probe is polylactic acid (PLA), polyglycolic acid, polyglycolic acid (PGA) or polylactic acid glycolic acid, and the inner layer of the probe holder is made of easily degradable materials. In this case, the probe is within 7-10 days of the body, and the outer thread of the probe and the inner layer of the probe holder are degraded to a certain extent, and the texture becomes loose.
所述血管套管的周向分为2段或3段，当为2段时，两段均为刚性结构，为抱箍结构，如图5和图6所示；当为3段时，依次为刚性-柔性-刚性设置，通过两侧刚性结构上的卡合结构固定于血管上。血管套管采用刚性-柔性-刚性设置时，由于柔性结构具有一定的弹性，可以使血管套管更好地贴附于血管的外壁。The circumference of the vascular sleeve is divided into 2 sections or 3 sections. When it is 2 sections, both sections are rigid structures, which are hoop structures, as shown in Figure 5 and Figure 6; when it is 3 sections, sequentially It is rigid-flexible-rigid, fixed on the blood vessel through the snap-in structure on both sides of the rigid structure. When the vascular sleeve adopts a rigid-flexible-rigid configuration, the flexible structure has a certain degree of elasticity, so that the vascular sleeve can be better attached to the outer wall of the blood vessel.
血管套管的材质可以为聚乳酸(PLA)、聚乙醇酸、聚羟基乙酸(PGA)、聚乳酸羟基乙酸。The material of the vascular sleeve can be polylactic acid (PLA), polyglycolic acid, polyglycolic acid (PGA), polylactic acid glycolic acid.
所述探头上设置有扳手1。用于对探头进行旋转。还包括缝合座和稳固套，缝合座和稳固套均套合于探头防护套层的外侧，且缝合座与稳固套之间固定连接，缝合座和/或稳固套上均设置有探头防护套的卡合固定结构。A
如图3所示，所述缝合座3上设置有若干缝合孔10，若干缝合孔沿缝合座的周向设置。As shown in FIG. 3 ,
如图4所示，卡合固定结构包括卡爪13、第一凹槽和第二凹槽14，第一凹槽设置于稳固套的内壁，第二凹槽14设置于探头防护套的外壁，且第一凹槽和第二凹槽14开口相对，第一凹槽的内壁为弧形内壁，弧形内壁设置有卡合齿12；As shown in FIG. 4, the snap-fit fixing structure includes
所述卡爪13至少包括旋转固定端、第一卡合端和第二卡合端，卡爪通过旋转固定端连接至稳固套和/或缝合座的内壁上，第一卡合端与第一凹槽内壁的卡合齿配合设置，第二卡合端与第二凹槽配合设置。The
所述第二凹槽包括平面内壁段和弧形内壁段，第二卡合端与所述平面内壁段配合。The second groove includes a planar inner wall section and an arc-shaped inner wall section, and the second engaging end fits with the planar inner wall section.
卡爪、第一凹槽和第二凹槽均沿轴向设置。The claws, the first groove and the second groove are all arranged along the axial direction.
采用该种设置方式，可以在一定距离上允许探头相对于稳固座和缝合座的相对滑动，而不允许探头相对于稳固座和缝合座的相对转动，在对探头进行固定时，便于调节缝合座于探头之间的相互位置关系。With this setting method, the relative sliding of the probe relative to the stable base and the suture base can be allowed at a certain distance, but the relative rotation of the probe relative to the stable base and the suture base is not allowed. When the probe is fixed, it is convenient to adjust the suture base. The mutual positional relationship between the probes.
如图3所示，所述缝合座上设置有指示标记，指示标记包括旋出箭头15和定位箭头11。As shown in FIG. 3 , an indicator mark is provided on the suture seat, and the indicator mark includes a screw-out
设置旋出箭头15，可以提示医护人员探头的旋转方向，设置定位箭头11，便于提示医护人员探头的旋转圈数，以便于判断将探头完全从探头固定座中旋出。旋转圈数可以通过判断探头上的扳手的旋转圈数确定，前提是，探头旋入探头固定座内的圈数已知。Arranging the unscrewing
血管套管8的长度与血管的直径比为5-20：1。可以有效防止血管套管8的扭转作用力对血管造成损伤。The ratio of the length of the
血流动态监测器的使用方法，包括如下步骤：The method for using the hemodynamic monitor comprises the following steps:
在探头固定座内层9的底部注入设定量耦合剂，然后将探头的端部拧入探头固定座内，与耦合剂接触；Inject a set amount of couplant into the bottom of the inner layer 9 of the probe holder, and then screw the end of the probe into the probe holder to be in contact with the couplant;
将血管套管套合于吻合后的血管的外侧；Sleeve the vascular sleeve on the outside of the anastomotic blood vessel;
将缝合座沿探头移动至合适位置后缝合于皮肤上，将探头通过缝合座固定于特定位置上，并使得探头的另一端与多普勒检测仪信号连接；通过多普勒检测仪检测血管内的血流信号。Move the suture seat along the probe to a suitable position and suture it on the skin, fix the probe at a specific position through the suture seat, and connect the other end of the probe to the signal of the Doppler detector; blood flow signal.
为了防止探头从稳固座向外滑动，可以通过医用胶带将探头粘贴于缝合座上，继而对探头进一步固定，防止其旋转或沿轴向移动。In order to prevent the probe from sliding outward from the stable seat, the probe can be pasted on the suture seat with medical tape, and then the probe can be further fixed to prevent it from rotating or moving along the axial direction.
对血管血流监测完毕后，将医用胶带取下，按缝合座上的旋出箭头的指示方向旋转扳手，在定位箭头的指示作用下记录向外旋出的圈数，当探头完全从探头固定座中旋出后，将缝合座从皮肤上取下，同时将探头拔出，即可。After monitoring the blood flow of the blood vessel, remove the medical tape, rotate the wrench in the direction indicated by the unscrew arrow on the suture seat, and record the number of outward turns under the direction of the positioning arrow. When the probe is completely fixed from the probe After the seat is unscrewed, the suture seat is removed from the skin, and the probe is pulled out at the same time.
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
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| CN112998684A (en) | 2021-06-22 |
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