技术领域Technical Field
本发明涉及医疗器械技术领域，具体而言，尤其涉及一种自动止血式免缝合支架血管及其使用方法。The present invention relates to the technical field of medical devices, and in particular to an automatic hemostatic suture-free stent blood vessel and a use method thereof.
背景技术Background Art
当前，胸主动脉病变的外科治疗方法一般是在体外循环下施行人工血管(1)置换术+支架植入术。因为该方法将自体血管切断并代以人工血管(1)，所以对血管吻合技术要求很高，同时因为内止血要求较高，其缝合过程耗时极长。而体外循环下的的时间越长，患者患神经系统并发症的可能性越大。Currently, surgical treatment for thoracic aortic disease is generally to perform artificial blood vessel (1) replacement and stent implantation under extracorporeal circulation. Because this method cuts off the autologous blood vessels and replaces them with artificial blood vessels (1), it requires very high vascular anastomosis technology. At the same time, because the internal hemostasis requirements are high, the suturing process is extremely time-consuming. The longer the extracorporeal circulation time, the greater the possibility of patients suffering from neurological complications.
因此，如何最大限度的降低体外循环时间是胸主动脉手术的主要目标之一。Therefore, how to minimize the extracorporeal circulation time is one of the main goals of thoracic aortic surgery.
发明内容Summary of the invention
根据上述提出的现有胸主动脉病变的外科治疗方法将自体血管切断并代以人工血管，所以对血管吻合技术要求很高，同时因为内止血要求较高，其缝合过程耗时极长。而体外循环下的的时间越长，患者患神经系统并发症的可能性越大的技术问题，而提供一种自动止血式免缝合支架血管及其使用方法。本发明主要利用人体血压或镍钛合金的弹性，以预设于人工血管外部的杠杆起到夹闭自体血管和人工血管吻合口作用，实现免缝合止血目的。According to the above-mentioned existing surgical treatment methods for thoracic aortic lesions, the autologous blood vessels are cut off and replaced with artificial blood vessels, so the requirements for vascular anastomosis technology are very high. At the same time, due to the high requirements for internal hemostasis, the suturing process is extremely time-consuming. The longer the time under extracorporeal circulation, the greater the possibility of patients suffering from neurological complications. In order to solve the technical problem, an automatic hemostatic suture-free stent blood vessel and a method of using the same are provided. The present invention mainly utilizes the elasticity of human blood pressure or nickel-titanium alloy to clamp the anastomosis of the autologous blood vessel and the artificial blood vessel with a lever preset on the outside of the artificial blood vessel, thereby achieving the purpose of suture-free hemostasis.
本发明采用的技术手段如下：The technical means adopted by the present invention are as follows:
一种自动止血式免缝合支架血管，作用于自体血管上，包括：若干杠杆组件以及具有扩张和压缩功能的人工血管和覆膜支架，所述人工血管的远端与所述覆膜支架的近端一体连接，所述覆膜支架置入自体血管内，在膨胀状态下将自体血管支撑起来；若干所述杠杆组件的支点设置于所述人工血管或所述覆膜支架的外部，呈周向均匀配置，所述杠杆组件绕所述支点进行转动，所述杠杆组件的动力端与所述人工血管的远端相连；An automatic hemostatic suture-free stent blood vessel acts on an autologous blood vessel, comprising: a plurality of lever assemblies, an artificial blood vessel and a covered stent with expansion and compression functions, the distal end of the artificial blood vessel being integrally connected with the proximal end of the covered stent, the covered stent being placed in the autologous blood vessel to support the autologous blood vessel in an expanded state; a plurality of fulcrums of the lever assemblies being arranged outside the artificial blood vessel or the covered stent, being circumferentially uniformly arranged, the lever assemblies rotating around the fulcrums, the power end of the lever assemblies being connected to the distal end of the artificial blood vessel;
驱动所述杠杆组件转动的动力来自于所述人工血管内部的血压，其中，所述人工血管工作时，被血流充盈，其内部血压会使所述人工血管达到其最大外径，利用杠杆原理将所述动力端顶起，驱动所述杠杆组件转动至向自体血管内部压迫在自体血管外壁上，同时将自体血管压迫于内置的处于膨胀状态下的所述覆膜支架上，使所述覆膜支架与自体血管压紧连接，以夹紧封闭吻合口的方式实现免缝合止血。The power for driving the lever assembly to rotate comes from the blood pressure inside the artificial blood vessel, wherein the artificial blood vessel is filled with blood when working, and the internal blood pressure will make the artificial blood vessel reach its maximum outer diameter. The power end is lifted up by utilizing the lever principle, driving the lever assembly to rotate toward the inside of the native blood vessel to press on the outer wall of the native blood vessel, and at the same time, press the native blood vessel on the built-in coated stent in an expanded state, so that the coated stent is tightly connected to the native blood vessel, and suture-free hemostasis is achieved by clamping and closing the anastomosis.
进一步地，将所述人工血管的远端翻转至所述覆膜支架的内部，并随所述覆膜支架被压缩，所述支点和所述动力端同时被翻转于所述覆膜支架内部；Furthermore, the distal end of the artificial blood vessel is turned over to the inside of the stent graft, and as the stent graft is compressed, the fulcrum and the power end are turned over inside the stent graft at the same time;
通过拉动所述人工血管来驱动所述杠杆组件转动，其中，拉动所述人工血管的近端，将所述人工血管上翻转于所述覆膜支架内的部分拉出，同时所述动力端被拉出至所述覆膜支架外，驱动所述杠杆组件以较大角度进行转动，使所述覆膜支架与自体血管压紧连接，之后通过所述人工血管的内部血压，增大所述覆膜支架与自体血管间的压紧力，实现免缝合止血。The lever assembly is driven to rotate by pulling the artificial blood vessel, wherein the proximal end of the artificial blood vessel is pulled to pull out the portion of the artificial blood vessel that is flipped up inside the coated stent, and at the same time the power end is pulled out of the coated stent, driving the lever assembly to rotate at a larger angle, so that the coated stent is tightly connected to the autologous blood vessel, and then the internal blood pressure of the artificial blood vessel is used to increase the compression force between the coated stent and the autologous blood vessel, thereby achieving suture-free hemostasis.
进一步地，所述人工血管上靠近远端的位置设有动力支架，所述动力端连接在所述动力支架上，所述动力支架的外部套设有金属支架环，通过所述金属支架环的伸缩实现所述动力支架的扩张和压缩；所述动力支架与所述人工血管连接为一体，所述人工血管可随所述动力支架的动作而动作；Furthermore, a power support is provided near the distal end of the artificial blood vessel, the power end is connected to the power support, a metal support ring is sleeved on the outside of the power support, and the expansion and compression of the power support are achieved by the expansion and contraction of the metal support ring; the power support is connected to the artificial blood vessel as a whole, and the artificial blood vessel can move with the movement of the power support;
驱动所述杠杆组件转动的动力来自于预设于所述人工血管上的预先压缩的所述金属支架环和血压的共同作用，其中，去除所述金属支架环外部束缚后，所述金属支架环恢复预设外径，将所述动力端顶起，驱动所述杠杆组件转动，使所述覆膜支架与自体血管压紧连接，之后通过所述人工血管的内部血压，增大所述覆膜支架与自体血管间的压紧力，实现免缝合止血。The power for driving the lever assembly to rotate comes from the combined effect of the pre-compressed metal stent ring preset on the artificial blood vessel and blood pressure, wherein after removing the external restraint of the metal stent ring, the metal stent ring restores the preset outer diameter, lifts the power end, and drives the lever assembly to rotate, so that the coated stent is tightly connected to the autologous blood vessel, and then the internal blood pressure of the artificial blood vessel is used to increase the compression force between the coated stent and the autologous blood vessel, thereby achieving suture-free hemostasis.
进一步地，所述金属支架环为波形环或网状环。Furthermore, the metal stent ring is a corrugated ring or a mesh ring.
进一步地，所述动力端位于所述动力支架的外部，二者之间的连接方式为软连接、机械转动连接或硬连接。Furthermore, the power end is located outside the power support, and the connection between the two is a soft connection, a mechanical rotation connection or a hard connection.
进一步地，所述人工血管的远端外壁设有支点固定环，二者间具有良好贴合度；所述支点与所述支点固定环连接，并均匀分布于所述支点固定环外缘圆周上；Furthermore, a fulcrum fixing ring is provided on the distal outer wall of the artificial blood vessel, and the two have a good fit; the fulcrum is connected to the fulcrum fixing ring and is evenly distributed on the outer circumference of the fulcrum fixing ring;
所述支点固定环的尺寸固定，不随所述动力支架或所述人工血管的尺寸改变而改变。The size of the fulcrum fixing ring is fixed and does not change with the size of the power stent or the artificial blood vessel.
进一步地，所述杠杆组件的数量为6-18。Furthermore, the number of the lever assemblies is 6-18.
进一步地，所述杠杆组件由动力端、阻力端和支点组成，所述阻力端置于所述覆膜支架的外部，所述支点设置在所述阻力端与所述动力端的连接处，所述动力端与所述人体血管固定连接，随所述人体血管的扩张或压缩被顶起或按压，利用杠杆原理，驱动所述阻力端与所述动力端绕所述支点同时进行周向转动；Further, the lever assembly is composed of a power end, a resistance end and a fulcrum, the resistance end is placed outside the stent graft, the fulcrum is arranged at the connection between the resistance end and the power end, the power end is fixedly connected to the human blood vessel, and is lifted or pressed as the human blood vessel expands or compresses, and the resistance end and the power end are driven to rotate circumferentially around the fulcrum at the same time by utilizing the lever principle;
当所述动力端被顶起时，转动后的所述阻力端置于自体血管的近端外部，同时所述阻力端向自体血管内部压迫自体血管外壁，将其压迫于内置的处于膨胀状态下的所述覆膜支架上，实现免缝合止血。When the power end is lifted up, the rotated resistance end is placed outside the proximal end of the autologous blood vessel, and at the same time, the resistance end presses the outer wall of the autologous blood vessel into the autologous blood vessel, pressing it against the built-in coated stent in the expanded state, thereby achieving suture-free hemostasis.
进一步地，所述动力端和所述阻力端的长度不同。Furthermore, the power end and the resistance end have different lengths.
进一步地，所述动力端和所述阻力端具有符合人体血管解剖学的曲率。Furthermore, the power end and the resistance end have curvatures that conform to human vascular anatomy.
进一步地，所述阻力端的形状为纺锤、椭圆、条状或杆状等形状。Furthermore, the resistance end is in the shape of a spindle, an ellipse, a strip or a rod.
进一步地，所述阻力端与自体血管之间覆有一层保护血管用盖膜。Furthermore, a layer of covering film for protecting the blood vessels is covered between the resistance end and the autologous blood vessels.
进一步地，所述覆膜支架包含1个支架主支和0-1个支架分支。Furthermore, the coated stent comprises 1 stent main branch and 0-1 stent branches.
进一步地，所述覆膜支架由起到阻隔血液(止血功能)的覆膜和起到支撑功能的支架骨架组成；所述支架骨架为金属丝编织成的波纹状支架本体，所述覆膜为附着在所述支架骨架内或外的一层筒状膜，其中所述支架骨架设在所述覆膜内部或外部，二者通过缝合或粘结一体，所述覆膜的近端与所述人工血管的远端一体连接；支架骨架为具有超弹性的金属丝制成，据此可事先将覆膜支架压缩至较小直径并加以束缚实现其直径缩小的目的，便于进入血管内腔，通过去除所述覆膜支架外的束缚实现所述覆膜支架的膨胀和压缩。Furthermore, the coated stent is composed of a coating that serves to block blood (hemostasis function) and a stent frame that serves to support the stent; the stent frame is a corrugated stent body woven from metal wires, and the coating is a tubular film attached to the inside or outside of the stent frame, wherein the stent frame is arranged inside or outside the coating, and the two are integrated by suturing or bonding, and the proximal end of the coating is integrally connected to the distal end of the artificial blood vessel; the stent frame is made of superelastic metal wire, and thus the coated stent can be compressed to a smaller diameter in advance and restrained to achieve the purpose of reducing its diameter, so as to facilitate entry into the blood vessel lumen, and the expansion and compression of the coated stent can be achieved by removing the restraint outside the coated stent.
进一步地，所述支架骨架为镍钛合金材质。Furthermore, the stent frame is made of nickel-titanium alloy.
进一步地，所述人工血管包含1个主支和0-4个分支。Furthermore, the artificial blood vessel comprises 1 main branch and 0-4 branches.
进一步地，所述人工血管由涤纶或聚四氟乙烯制成。Furthermore, the artificial blood vessel is made of polyester or polytetrafluoroethylene.
本发明还提供了一种自动止血式免缝合支架血管的使用方法，包括如下步骤：The present invention also provides a method for using an automatic hemostatic suture-free stent blood vessel, comprising the following steps:
将人工血管的远端翻转至覆膜支架近端，并随覆膜支架被压缩，此时杠杆组件动力端也同时被翻转于覆膜支架的内部，杠杆组件的阻力端位于人工血管的外部；The distal end of the artificial blood vessel is flipped to the proximal end of the stent graft, and as the stent graft is compressed, the power end of the lever assembly is also flipped inside the stent graft, and the resistance end of the lever assembly is located outside the artificial blood vessel;
当覆膜支架置于人体血管的内部时，去除覆膜支架外的束缚，此时覆膜支架将自体血管支撑起来；When the stent graft is placed inside a human blood vessel, the restraints outside the stent graft are removed, and the stent graft now supports the native blood vessel;
之后将位于覆膜支架内部的人工血管近端朝术者近端拉动，将人工血管翻转于覆膜支架内部的部分拉出，此时，动力端位于人工血管的外部靠近其远端，阻力端被翻转转动至自体血管外部；Then, the proximal end of the artificial blood vessel inside the stent graft is pulled toward the operator's proximal end, and the part of the artificial blood vessel inside the stent graft is flipped and pulled out. At this time, the power end is located outside the artificial blood vessel close to its distal end, and the resistance end is flipped and rotated to the outside of the native blood vessel;
之后将人工血管的内部充血，充盈的血液将人工血管撑起，人工血管将动力端顶起，在杠杆原理作用下，阻力端具有血压赋予的向血管内部的压紧力，其将吻合口的血液止住，达到免缝合止血的目的。The interior of the artificial blood vessel is then filled with blood, which props up the artificial blood vessel, and the artificial blood vessel lifts up the power end. Under the action of the lever principle, the resistance end has a compression force given by the blood pressure to the inside of the blood vessel, which stops the blood at the anastomosis and achieves the purpose of suture-free hemostasis.
本发明还提供了一种自动止血式免缝合支架血管的使用方法，包括如下步骤：The present invention also provides a method for using an automatic hemostatic suture-free stent blood vessel, comprising the following steps:
在进行主动脉弓置换术时，需要将患者主动脉弓的中段切除；During aortic arch replacement surgery, the middle section of the patient's aortic arch needs to be removed;
将压缩后的覆膜支架置入降主动脉内腔，直至主动脉断端贴合于支点固定环的远端；Place the compressed covered stent into the inner lumen of the descending aorta until the aortic stump fits the distal end of the pivot fixing ring;
去除覆膜支架外的束缚，覆膜支架膨胀并恢复至原有直径，将主动脉壁自内部撑起；The restraints outside the stent graft are removed, and the stent graft expands and returns to its original diameter, propping up the aortic wall from the inside;
去除动力支架外部的束缚，动力支架扩张并将与其连接的人工血管同样带动扩张；The external restraint of the powered stent is removed, and the powered stent expands and drives the connected artificial blood vessel to expand as well;
此时，杠杆组件的动力端被动力支架的扩张带动，使杠杆组件绕其支点转动，杠杆组件的阻力端在杠杆原理作用下压覆于主动脉外壁；At this time, the power end of the lever assembly is driven by the expansion of the power support, causing the lever assembly to rotate around its fulcrum, and the resistance end of the lever assembly is pressed against the outer wall of the aorta under the action of the lever principle;
夹闭人工血管近端，打开降主动脉的血流通路，人工血管在血压的作用下进一步充盈，尺寸得以恢复至预设状态，动力端得到血压的压力，使得阻力端压覆动脉外壁的力量加大，其将动脉血管紧密压合于覆膜支架上，阻止血液流出，起到免缝合止血的作用。The proximal end of the artificial blood vessel is clamped to open the blood flow path of the descending aorta. The artificial blood vessel is further filled under the action of blood pressure, and its size is restored to the preset state. The power end receives the pressure of blood pressure, which increases the force of the resistance end to press the outer wall of the artery, and the artery is tightly pressed against the coated stent to prevent blood from flowing out, thereby achieving the effect of suture-free hemostasis.
较现有技术相比，本发明具有以下优点：Compared with the prior art, the present invention has the following advantages:
自动止血式免缝合支架血管包括人工血管、覆膜支架、杠杆组件等。所述人工血管的远端与覆膜支架的近端连接；所述杠杆组件包括动力端、阻力端和支点；所述人工血管的外壁上可设有固定环；所述杠杆组件的支点连接在固定环上，使所述杠杆可绕支点改变动力端和阻力端相对人工血管的位置。本发明所述自动止血式免缝合支架血管利用血压和/或动力支架的弹性，以夹紧封闭吻合口的方式而免除人工血管置换术中吻合口缝合的方法，达到止血和降低手术时间的效果。The automatic hemostatic suture-free stent blood vessel comprises an artificial blood vessel, a coated stent, a lever assembly, etc. The distal end of the artificial blood vessel is connected to the proximal end of the coated stent; the lever assembly comprises a power end, a resistance end and a fulcrum; a fixed ring may be provided on the outer wall of the artificial blood vessel; the fulcrum of the lever assembly is connected to the fixed ring, so that the lever can change the position of the power end and the resistance end relative to the artificial blood vessel around the fulcrum. The automatic hemostatic suture-free stent blood vessel of the present invention utilizes blood pressure and/or the elasticity of the power stent to clamp and close the anastomosis, thereby eliminating the method of suturing the anastomosis in artificial blood vessel replacement surgery, thereby achieving the effect of hemostasis and reducing the operation time.
1、本发明提供的自动止血式免缝合支架血管及其使用方法，利用杠杆原理，以金属支架环和/或血压作为止血动力，以压覆血管外表面的方式起到闭合吻合口并止血的目的。该止血方式为间断压迫止血，相比于外部用锁紧器或丝线扎紧血管外壁止血，本发明止血方式可使得血管外壁均匀压迫，止血效果良好。1. The automatic hemostatic suture-free stent blood vessel and its use method provided by the present invention use the lever principle, metal stent ring and/or blood pressure as the hemostatic power, and press the outer surface of the blood vessel to close the anastomosis and stop bleeding. This hemostatic method is intermittent compression hemostasis. Compared with externally tightening the outer wall of the blood vessel with a lock or silk thread to stop bleeding, the hemostatic method of the present invention can make the outer wall of the blood vessel evenly compressed, and the hemostatic effect is good.
2、本发明提供的自动止血式免缝合支架血管及其使用方法，操作快捷，可有效降低手术时间。2. The automatic hemostatic suture-free stent blood vessel and the use method thereof provided by the present invention are quick to operate and can effectively reduce the operation time.
综上，应用本发明的技术方案能够解决现有胸主动脉病变的外科治疗方法将自体血管切断并代以人工血管，所以对血管吻合技术要求很高，同时因为内止血要求较高，其缝合过程耗时极长。而体外循环下的的时间越长，患者患神经系统并发症的可能性越大的问题。In summary, the technical solution of the present invention can solve the problem that the existing surgical treatment methods for thoracic aortic lesions cut off the autologous blood vessels and replace them with artificial blood vessels, so the vascular anastomosis technology is very high, and because the internal hemostasis requirements are high, the suturing process is very time-consuming. The longer the extracorporeal circulation time, the greater the possibility of patients suffering from neurological complications.
基于上述理由本发明可在医疗器械等领域广泛推广。Based on the above reasons, the present invention can be widely promoted in the fields of medical devices and the like.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
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做以简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
图1为本发明实施例1自动止血式免缝合支架血管的结构示意图。FIG1 is a schematic structural diagram of an automatic hemostatic suture-free stent blood vessel according to Example 1 of the present invention.
图2为本发明实施例1自动止血式免缝合支架血管的侧视图。FIG. 2 is a side view of the automatic hemostatic suture-free stent blood vessel according to Example 1 of the present invention.
图3为本发明实施例1自动止血式免缝合支架血管的使用前状态图。FIG. 3 is a diagram showing the state of the automatic hemostatic suture-free stent blood vessel before use according to Example 1 of the present invention.
图4为本发明实施例1自动止血式免缝合支架血管中覆膜支架置入自体血管过程的示意图。FIG. 4 is a schematic diagram of the process of implanting a covered stent into an autologous blood vessel in the automatic hemostatic suture-free stent blood vessel according to Example 1 of the present invention.
图5为本发明实施例1自动止血式免缝合支架血管使用后，覆膜支架置入自体血管中未膨胀的示意图。5 is a schematic diagram of the automatic hemostatic suture-free stent blood vessel of Example 1 of the present invention after use, in which the covered stent is placed in the autologous blood vessel without expansion.
图6为本发明实施例1自动止血式免缝合支架血管使用后，自体血管与覆膜支架紧密压合的示意图。6 is a schematic diagram showing the close pressing of the autologous blood vessel and the covered stent after the use of the automatic hemostatic suture-free stent blood vessel according to Example 1 of the present invention.
图7为本发明实施例4自动止血式免缝合支架血管的结构示意图。FIG. 7 is a schematic structural diagram of an automatic hemostatic suture-free stent blood vessel according to Example 4 of the present invention.
图8为本发明实施例4自动止血式免缝合支架血管的使用前状态图。FIG8 is a diagram showing the state of the automatic hemostatic suture-free stent blood vessel before use according to Embodiment 4 of the present invention.
图9为本发明实施例4自动止血式免缝合支架血管的后视图。FIG. 9 is a rear view of the automatic hemostatic suture-free stent blood vessel according to Example 4 of the present invention.
图中：1、人工血管；2、覆膜支架；21、支架骨架；22、覆膜；3、杠杆组件；31、动力端；32、阻力端；33、支点；34、支点固定环；4、动力支架。In the figure: 1. artificial blood vessel; 2. covered stent; 21. stent frame; 22. covered membrane; 3. lever assembly; 31. power end; 32. resistance end; 33. fulcrum; 34. fulcrum fixing ring; 4. power stent.
具体实施方式DETAILED DESCRIPTION
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
为使本发明实施例的目的、技术方案和优点更加清楚，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。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。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。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
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 terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and/or combinations thereof.
除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。同时，应当清楚，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。对于相关领域普通技术人员己知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。在这里示出和讨论的所有示例中，任向具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
如图所示，本发明提供了一种自动止血式免缝合支架血管，作用于自体血管上，包括：若干杠杆组件3以及具有扩张和压缩功能的人工血管1和覆膜支架2，所述人工血管1的远端与所述覆膜支架2的近端一体连接，所述覆膜支架2置入自体血管内，在膨胀状态下将自体血管支撑起来；若干所述杠杆组件3的支点33设置于所述人工血管1或所述覆膜支架2的外部，呈周向均匀配置，所述杠杆组件3绕所述支点33进行转动，所述杠杆组件3的动力端31与所述人工血管1的远端相连。As shown in the figure, the present invention provides an automatic hemostatic suture-free stent blood vessel, which acts on an autologous blood vessel, comprising: a plurality of lever assemblies 3 and an artificial blood vessel 1 and a coated stent 2 with expansion and compression functions, wherein the distal end of the artificial blood vessel 1 is integrally connected with the proximal end of the coated stent 2, and the coated stent 2 is inserted into the autologous blood vessel to support the autologous blood vessel in an expanded state; a plurality of fulcrums 33 of the lever assemblies 3 are arranged on the outside of the artificial blood vessel 1 or the coated stent 2, and are uniformly arranged in the circumferential direction, and the lever assemblies 3 rotate around the fulcrums 33, and the power end 31 of the lever assembly 3 is connected to the distal end of the artificial blood vessel 1.
驱动所述杠杆组件3转动的动力来自于所述人工血管1内部的血压，其中，所述人工血管1工作时，被血流充盈，其内部血压会使所述人工血管1达到其最大外径，利用杠杆原理将所述动力端31顶起，驱动所述杠杆组件3转动至向自体血管内部压迫在自体血管外壁上，同时将自体血管压迫于内置的处于膨胀状态下的所述覆膜支架2上，使所述覆膜支架2与自体血管压紧连接，以夹紧封闭吻合口的方式实现免缝合止血。The power for driving the lever assembly 3 to rotate comes from the blood pressure inside the artificial blood vessel 1, wherein, when the artificial blood vessel 1 is working, it is filled with blood flow, and its internal blood pressure will make the artificial blood vessel 1 reach its maximum outer diameter. The power end 31 is lifted up by utilizing the lever principle, driving the lever assembly 3 to rotate toward the inside of the native blood vessel and press on the outer wall of the native blood vessel, while pressing the native blood vessel onto the built-in coated stent 2 in an expanded state, so that the coated stent 2 is pressed and connected with the native blood vessel, and suture-free hemostasis is achieved by clamping and closing the anastomosis.
优选的，将所述人工血管1的远端翻转至所述覆膜支架2的内部，并随所述覆膜支架2被压缩，所述支点33和所述动力端31同时被翻转于所述覆膜支架2内部；Preferably, the distal end of the artificial blood vessel 1 is flipped to the inside of the stent graft 2, and as the stent graft 2 is compressed, the fulcrum 33 and the power end 31 are flipped to the inside of the stent graft 2 at the same time;
通过拉动所述人工血管1来驱动所述杠杆组件3转动，其中，拉动所述人工血管1的近端，将所述人工血管1上翻转于所述覆膜支架2内的部分拉出，同时所述动力端31被拉出至所述覆膜支架2外，驱动所述杠杆组件3以较大角度进行转动，使所述覆膜支架2与自体血管压紧连接，之后通过所述人工血管1的内部血压，增大所述覆膜支架2与自体血管间的压紧力，实现免缝合止血。The lever assembly 3 is driven to rotate by pulling the artificial blood vessel 1, wherein the proximal end of the artificial blood vessel 1 is pulled to pull out the part of the artificial blood vessel 1 that is flipped over inside the coated stent 2, and at the same time, the power end 31 is pulled out of the coated stent 2 to drive the lever assembly 3 to rotate at a larger angle, so that the coated stent 2 is tightly connected with the autologous blood vessel, and then the internal blood pressure of the artificial blood vessel 1 is used to increase the compression force between the coated stent 2 and the autologous blood vessel, thereby achieving suture-free hemostasis.
优选的，所述人工血管1上靠近远端的位置设有动力支架4，所述动力端31连接在所述动力支架4上，所述动力支架4的外部套设有金属支架环，通过所述金属支架环的伸缩实现所述动力支架4的扩张和压缩；所述动力支架4与所述人工血管1连接为一体，所述人工血管1可随所述动力支架4的动作而动作；Preferably, a power support 4 is provided near the distal end of the artificial blood vessel 1, the power end 31 is connected to the power support 4, a metal support ring is sleeved on the outside of the power support 4, and the expansion and compression of the power support 4 are achieved by the expansion and contraction of the metal support ring; the power support 4 is connected to the artificial blood vessel 1 as a whole, and the artificial blood vessel 1 can move with the movement of the power support 4;
驱动所述杠杆组件3转动的动力来自于预设于所述人工血管1上的预先压缩的所述金属支架环和血压的共同作用，其中，去除所述金属支架环外部束缚后，所述金属支架环恢复预设外径，将所述动力端31顶起，驱动所述杠杆组件3转动，使所述覆膜支架2与自体血管压紧连接，之后通过所述人工血管1的内部血压，增大所述覆膜支架2与自体血管间的压紧力，实现免缝合止血。The power for driving the lever assembly 3 to rotate comes from the combined effect of the pre-compressed metal stent ring preset on the artificial blood vessel 1 and blood pressure, wherein after removing the external restraint of the metal stent ring, the metal stent ring restores the preset outer diameter, lifts the power end 31, and drives the lever assembly 3 to rotate, so that the coated stent 2 is tightly connected with the autologous blood vessel, and then the internal blood pressure of the artificial blood vessel 1 is used to increase the compression force between the coated stent 2 and the autologous blood vessel, thereby achieving suture-free hemostasis.
优选的，所述金属支架环为波形环或网状环。Preferably, the metal stent ring is a corrugated ring or a mesh ring.
优选的，所述动力端31位于所述动力支架4的外部，二者之间的连接方式为软连接、机械转动连接或硬连接。Preferably, the power end 31 is located outside the power bracket 4, and the connection between the two is a soft connection, a mechanical rotation connection or a hard connection.
优选的，所述人工血管1的远端外壁设有支点固定环34，二者间具有良好贴合度；所述支点33与所述支点固定环34连接，并均匀分布于所述支点固定环34外缘圆周上；Preferably, the distal outer wall of the artificial blood vessel 1 is provided with a fulcrum fixing ring 34, and the two have a good fit; the fulcrum 33 is connected to the fulcrum fixing ring 34 and is evenly distributed on the outer edge circumference of the fulcrum fixing ring 34;
所述支点固定环34的尺寸固定，不随所述动力支架4或所述人工血管1的尺寸改变而改变。The size of the fulcrum fixing ring 34 is fixed and does not change with the size of the power support 4 or the artificial blood vessel 1 .
优选的，所述杠杆组件3的数量为6-18。Preferably, the number of the lever assemblies 3 is 6-18.
优选的，所述杠杆组件3由动力端31、阻力端32和支点33组成，所述阻力端32置于所述覆膜支架2的外部，所述支点33设置在所述阻力端32与所述动力端31的连接处，所述动力端31与所述人体血管固定连接，随所述人体血管的扩张或压缩被顶起或按压，利用杠杆原理，驱动所述阻力端32与所述动力端31绕所述支点33同时进行周向转动；Preferably, the lever assembly 3 is composed of a power end 31, a resistance end 32 and a fulcrum 33, wherein the resistance end 32 is disposed outside the stent graft 2, and the fulcrum 33 is disposed at the connection between the resistance end 32 and the power end 31, and the power end 31 is fixedly connected to the human blood vessel, and is lifted or pressed as the human blood vessel expands or compresses, and the resistance end 32 and the power end 31 are driven to rotate circumferentially around the fulcrum 33 simultaneously by utilizing the lever principle;
当所述动力端31被顶起时，转动后的所述阻力端32置于自体血管的近端外部，同时所述阻力端32向自体血管内部压迫自体血管外壁，将其压迫于内置的处于膨胀状态下的所述覆膜支架2上，实现免缝合止血。When the power end 31 is lifted up, the rotated resistance end 32 is placed outside the proximal end of the autologous blood vessel. At the same time, the resistance end 32 presses the outer wall of the autologous blood vessel toward the inside of the autologous blood vessel, pressing it against the built-in coated stent 2 in an expanded state, thereby achieving suture-free hemostasis.
优选的，所述动力端31和所述阻力端32的长度不同。Preferably, the power end 31 and the resistance end 32 have different lengths.
优选的，所述动力端31和所述阻力端32具有符合人体血管解剖学的曲率。Preferably, the power end 31 and the resistance end 32 have curvatures that conform to human vascular anatomy.
优选的，所述阻力端32的形状为纺锤、椭圆、条状或杆状等形状。Preferably, the resistance end 32 is in the shape of a spindle, an ellipse, a strip or a rod.
优选的，所述阻力端32与自体血管之间覆有一层保护血管用盖膜。Preferably, a layer of covering film for protecting the blood vessels is covered between the resistance end 32 and the autologous blood vessels.
优选的，所述覆膜支架2包含1个支架主支和0-1个支架分支。Preferably, the coated stent 2 comprises 1 stent main branch and 0-1 stent branches.
优选的，所述覆膜支架2由起到阻隔血液(止血功能)的覆膜22和起到支撑功能的支架骨架21组成；所述支架骨架21为金属丝编织成的波纹状支架本体，所述覆膜22为附着在所述支架骨架21内或外的一层筒状膜，其中所述支架骨架21设在所述覆膜22内部或外部，二者通过缝合或粘结一体，所述覆膜22的近端与所述人工血管1的远端一体连接；所述支架骨架21为具有超弹性的金属丝制成，据此可事先将所述覆膜支架2压缩至较小直径并加以束缚实现其直径缩小的目的，便于进入血管内腔，通过去除所述覆膜支架2外的束缚实现所述覆膜支架2的膨胀和压缩。Preferably, the coated stent 2 is composed of a coating 22 for blocking blood (hemostasis function) and a stent frame 21 for supporting function; the stent frame 21 is a corrugated stent body woven from metal wires, and the coating 22 is a layer of tubular membrane attached to the inside or outside of the stent frame 21, wherein the stent frame 21 is arranged inside or outside the coating 22, and the two are integrated by suturing or bonding, and the proximal end of the coating 22 is integrally connected with the distal end of the artificial blood vessel 1; the stent frame 21 is made of superelastic metal wire, and accordingly, the coated stent 2 can be compressed to a smaller diameter in advance and restrained to achieve the purpose of reducing its diameter, so as to facilitate entry into the blood vessel lumen, and the expansion and compression of the coated stent 2 can be achieved by removing the restraint outside the coated stent 2.
优选的，所述支架骨架21为镍钛合金材质。Preferably, the stent frame 21 is made of nickel-titanium alloy.
优选的，所述人工血管1包含1个主支和0-4个分支。Preferably, the artificial blood vessel 1 comprises 1 main branch and 0-4 branches.
优选的，所述人工血管1由涤纶或聚四氟乙烯制成。Preferably, the artificial blood vessel 1 is made of polyester or polytetrafluoroethylene.
实施例1Example 1
如图1-6所示，一种自动止血式免缝合支架血管，包括内层由涤纶制成的人工血管1、覆膜支架2和12组杠杆组件3。As shown in FIG. 1-6 , an automatic hemostatic suture-free stent blood vessel includes an artificial blood vessel 1 with an inner layer made of polyester, a coated stent 2 and 12 groups of lever assemblies 3 .
所述人工血管1远端和覆膜支架2的近端相连。The distal end of the artificial blood vessel 1 is connected to the proximal end of the stent graft 2 .
所述覆膜支架2包括由镍钛合金制成的支架骨架21和覆膜22。本实施例中，人工血管1和覆膜支架2均为直筒状，无分支。覆膜支架2由起到阻隔血液(止血功能)的覆膜22和起到支撑功能的支架骨架21组成；支架骨架21为金属丝编织成的波纹状支架本体，覆膜22为附着在支架骨架21内或外的一层筒状膜，其中支架骨架21设在覆膜22内部或外部，二者通过缝合或粘结一体，覆膜22的近端与人工血管1的远端一体连接；支架骨架21为具有超弹性的金属丝制成，据此可事先将覆膜支架2压缩至较小直径并加以束缚实现其直径缩小的目的，便于进入血管内腔，通过去除覆膜支架2外的束缚实现覆膜支架2的膨胀和压缩。The coated stent 2 includes a stent skeleton 21 and a coating 22 made of nickel-titanium alloy. In this embodiment, the artificial blood vessel 1 and the coated stent 2 are both straight cylindrical and have no branches. The coated stent 2 is composed of a coating 22 that blocks blood (hemostasis function) and a stent skeleton 21 that supports; the stent skeleton 21 is a corrugated stent body woven from metal wires, and the coating 22 is a layer of tubular film attached to the inside or outside of the stent skeleton 21, wherein the stent skeleton 21 is arranged inside or outside the coating 22, and the two are sutured or bonded together, and the proximal end of the coating 22 is integrally connected with the distal end of the artificial blood vessel 1; the stent skeleton 21 is made of superelastic metal wire, and the coated stent 2 can be compressed to a smaller diameter in advance and bound to achieve the purpose of reducing its diameter, so as to facilitate entry into the lumen of the blood vessel, and the expansion and compression of the coated stent 2 can be achieved by removing the restraint outside the coated stent 2.
所述杠杆组件3包括由镍钛合金制成的动力端31、椭圆形阻力端32和支点33，动力端31和阻力端32具有符合人体血管解剖学的曲率，且二者长度不同。阻力端32与自体血管之间覆有一层保护血管用盖膜。The lever assembly 3 includes a power end 31 made of nickel-titanium alloy, an elliptical resistance end 32 and a fulcrum 33. The power end 31 and the resistance end 32 have curvatures that conform to the anatomy of human blood vessels and are of different lengths. A protective film is provided between the resistance end 32 and the autologous blood vessel.
所述支点33与人工血管1外部连接，连接处靠近覆膜支架2。The fulcrum 33 is connected to the outside of the artificial blood vessel 1 , and the connection is close to the coated stent 2 .
实施例2Example 2
实施例1中所述自动止血式免缝合支架血管的第一种使用方法包括如下步骤：The first method for using the automatic hemostatic suture-free stent blood vessel described in Example 1 comprises the following steps:
人工血管1不翻转，驱动所述杠杆组件3转动的动力来自于人工血管1内部的血压：将人工血管1内部充血，充盈的血液将人工血管1撑起，人工血管1将杠杆组件3的动力端31顶起，在杠杆原理作用下，阻力端32有血压赋予的向血管内部的力，其将吻合口的血液止住，达到免缝合的目的。The artificial blood vessel 1 does not flip over, and the power that drives the lever assembly 3 to rotate comes from the blood pressure inside the artificial blood vessel 1: the artificial blood vessel 1 is filled with blood, and the filled blood props up the artificial blood vessel 1, and the artificial blood vessel 1 lifts the power end 31 of the lever assembly 3. Under the action of the lever principle, the resistance end 32 has a force toward the inside of the blood vessel given by the blood pressure, which stops the blood at the anastomosis and achieves the purpose of no suture.
实施例3Example 3
实施例1中所述自动止血式免缝合支架血管的第二种使用方法包括如下步骤：A second method for using the automatic hemostatic suture-free stent blood vessel described in Example 1 comprises the following steps:
所述人工血管1远端翻转至覆膜支架2近端，并随覆膜支架2被压缩，此时杠杆组件3的支点33同样被翻转于覆膜支架2内部，此时杠杆组件3的动力端31同样被翻转于覆膜支架2内部，其阻力端32位于人工血管1外部；The distal end of the artificial blood vessel 1 is turned over to the proximal end of the coated stent 2 and is compressed along with the coated stent 2. At this time, the fulcrum 33 of the lever assembly 3 is also turned over inside the coated stent 2. At this time, the power end 31 of the lever assembly 3 is also turned over inside the coated stent 2, and the resistance end 32 is located outside the artificial blood vessel 1.
当覆膜支架2置于人体血管内部时候，去除覆膜支架2外的束缚，此时覆膜支架2将自体血管支撑起来；When the stent graft 2 is placed inside a human blood vessel, the restraints outside the stent graft 2 are removed, and the stent graft 2 now supports the native blood vessel;
之后将位于覆膜支架2内部的人工血管1近端朝术者近端拉动，将人工血管1翻转于覆膜支架2内部的部分拉出，此时，杠杆组件3的动力端31位于人工血管1外部靠近远端，阻力端32被翻转至自体血管1外部；Then, the proximal end of the artificial blood vessel 1 located inside the stent graft 2 is pulled toward the proximal end of the operator, and the part of the artificial blood vessel 1 flipped inside the stent graft 2 is pulled out. At this time, the power end 31 of the lever assembly 3 is located outside the artificial blood vessel 1 near the distal end, and the resistance end 32 is flipped to the outside of the native blood vessel 1;
此时将人工血管1内部充血，充盈的血液将人工血管1撑起，人工血管1将杠杆组件3的动力端31顶起，在杠杆原理作用下，阻力端32有血压赋予的向血管内部的力，其将吻合口的血液止住，达到免缝合的目的。At this time, the interior of the artificial blood vessel 1 is filled with blood, and the filled blood props up the artificial blood vessel 1, which lifts the power end 31 of the lever assembly 3. Under the action of the lever principle, the resistance end 32 has a force toward the inside of the blood vessel given by the blood pressure, which stops the blood at the anastomosis and achieves the purpose of avoiding suturing.
实施例4Example 4
与实施例1不同的是，本实施例中，所述覆膜支架2包含1个支架主支和0-1个支架分支，支架主支即为图1所示覆膜支架结构，支架分支为于支架主支侧面开口伸出的另一个小直径的支架结构。所述人工血管1包含1个主支和0-4个分支，主支即为图1所示人工血管结构，分支为于主支侧面开口伸出的另一个小直径的人工血管结构。Different from Example 1, in this embodiment, the coated stent 2 includes 1 main branch and 0-1 branches, the main branch is the coated stent structure shown in Figure 1, and the branches are another small-diameter stent structure extending from the side opening of the main branch. The artificial blood vessel 1 includes 1 main branch and 0-4 branches, the main branch is the artificial blood vessel structure shown in Figure 1, and the branches are another small-diameter artificial blood vessel structure extending from the side opening of the main branch.
实施例5Example 5
如图7-9所示，与实施例1不同的是，本实施例中，一种自动止血式免缝合支架血管包括由聚四氟乙烯制成的人工血管1、覆膜支架2、18组杠杆组件3、设置在人工血管1远端外壁的支点固定环34和动力支架4。动力支架4设置在人工血管1上靠近远端的位置，其外部套设有金属支架环，通过金属支架环的伸缩实现动力支架4的扩张和压缩，该金属支架环为具有弹性的波形环。As shown in Fig. 7-9, different from the embodiment 1, in the present embodiment, an automatic hemostatic suture-free stent blood vessel comprises an artificial blood vessel 1 made of polytetrafluoroethylene, a coated stent 2, 18 sets of lever components 3, a fulcrum fixing ring 34 arranged on the outer wall of the distal end of the artificial blood vessel 1, and a power stent 4. The power stent 4 is arranged at a position close to the distal end of the artificial blood vessel 1, and a metal stent ring is sleeved on its outer surface. The expansion and compression of the power stent 4 are realized by the telescopic movement of the metal stent ring, and the metal stent ring is an elastic wave-shaped ring.
所述人工血管1远端和覆膜支架2近端连接。The distal end of the artificial blood vessel 1 is connected to the proximal end of the coated stent 2 .
所述支点固定环34与人工血管1连接，二者具有良好贴合度。The fulcrum fixing ring 34 is connected to the artificial blood vessel 1, and the two have a good fit.
所述杠杆组件3的支点33与支点固定环34连接，并均匀分布于支点固定环34外缘圆周上。The fulcrum 33 of the lever assembly 3 is connected to the fulcrum fixing ring 34 and is evenly distributed on the outer circumference of the fulcrum fixing ring 34 .
所述杠杆组件3的动力端31和条状阻力端32可绕支点33周向旋转，其旋转动作位于垂直于支点固定环34且其支点33所在的平面上。具体地，支点33连接在支点固定环34上，使杠杆组件可绕支点33改变动力端31和阻力端32相对人工血管1的位置。The power end 31 and the strip resistance end 32 of the lever assembly 3 can rotate around the fulcrum 33, and the rotation action is located on a plane perpendicular to the fulcrum fixing ring 34 and where the fulcrum 33 is located. Specifically, the fulcrum 33 is connected to the fulcrum fixing ring 34, so that the lever assembly can change the position of the power end 31 and the resistance end 32 relative to the artificial blood vessel 1 around the fulcrum 33.
所述支点固定环34的尺寸固定，其不随支架或人工血管1的尺寸改变而改变。The size of the fulcrum fixing ring 34 is fixed and does not change with the size of the stent or artificial blood vessel 1 .
所述动力端31位于动力支架4外部，二者可以以一定方式连接，连接方式可以为软连接、机械转动连接或硬连接。The power end 31 is located outside the power support 4, and the two can be connected in a certain way, and the connection method can be a soft connection, a mechanical rotation connection or a hard connection.
所述动力支架4与人工血管1连接一体，人工血管1可随动力支架4的动作而动作。The power support 4 is connected to the artificial blood vessel 1 as a whole, and the artificial blood vessel 1 can move along with the movement of the power support 4 .
实施例6Example 6
实施例5中所述自动止血式免缝合支架血管的使用方法包括如下步骤：The method for using the automatic hemostatic suture-free stent blood vessel described in Example 5 comprises the following steps:
在进行主动脉弓置换术时，需要将患者主动脉弓的中段切除；During aortic arch replacement surgery, the middle section of the patient's aortic arch needs to be removed;
如图9所示，将压缩后的覆膜支架2置入降主动脉内腔，直至主动脉断端贴合于支点固定环34远端；As shown in FIG. 9 , the compressed stent graft 2 is placed into the inner cavity of the descending aorta until the stump of the aorta is attached to the distal end of the fulcrum fixing ring 34 ;
去除覆膜支架2外的束缚，覆膜支架2膨胀并回复原有直径，将主动脉壁自内部撑起；The restraint outside the stent graft 2 is removed, and the stent graft 2 expands and returns to its original diameter, propping up the aortic wall from the inside;
去除动力支架4外部的束缚，动力支架4扩张并将与其连接的人工血管1同样带动扩张；The external restraint of the power stent 4 is removed, and the power stent 4 expands and drives the artificial blood vessel 1 connected thereto to expand as well;
此时，杠杆组件3的动力端31被动力支架4带动扩张，杠杆组件3绕其支点33旋转，杠杆组件3的阻力端32在杠杆原理作用下压覆于主动脉外壁；At this time, the power end 31 of the lever assembly 3 is driven to expand by the power support 4, the lever assembly 3 rotates around its fulcrum 33, and the resistance end 32 of the lever assembly 3 is pressed against the outer wall of the aorta under the action of the lever principle;
夹闭人工血管1近端，打开降主动脉的血流通路，人工血管1在血压的作用下进一步充盈，尺寸得以恢复至预设状态，杠杆组件3的动力端31得到血压的压力，使得阻力端32压覆动脉外壁的力量加大，其将动脉血管紧密压合于覆膜支架2上，阻止血液流出，起到免缝合止血的作用。The proximal end of the artificial blood vessel 1 is clamped to open the blood flow path of the descending aorta. The artificial blood vessel 1 is further filled under the action of blood pressure and its size is restored to a preset state. The power end 31 of the lever assembly 3 receives the pressure of blood pressure, which increases the force of the resistance end 32 pressing the outer wall of the artery, and the artery is tightly pressed onto the coated stent 2 to prevent blood from flowing out, thereby achieving the effect of suture-free hemostasis.
本发明利用血压和/或动力支架4的弹性，以夹紧封闭吻合口的方式而免除人工血管1置换术中吻合口缝合的方法，从而达到止血和降低手术时间的效果。The present invention utilizes the elasticity of blood pressure and/or the power support 4 to clamp and seal the anastomosis, thereby eliminating the need for suturing the anastomosis during artificial blood vessel 1 replacement surgery, thereby achieving the effects of hemostasis and reducing the operation time.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110098128.6ACN112773558B (en) | 2021-01-25 | 2021-01-25 | Automatic hemostatic suture-free stent blood vessel and use method thereof |
| Application Number | Priority Date | Filing Date | Title |
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| CN202110098128.6ACN112773558B (en) | 2021-01-25 | 2021-01-25 | Automatic hemostatic suture-free stent blood vessel and use method thereof |
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| CN202110098128.6AActiveCN112773558B (en) | 2021-01-25 | 2021-01-25 | Automatic hemostatic suture-free stent blood vessel and use method thereof |
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