技术领域technical field
本发明涉及医疗器械技术领域，特别是涉及一种医用操作通道支架。The invention relates to the technical field of medical instruments, in particular to a medical operation channel bracket.
背景技术Background technique
微创治疗在临床上应用广泛，它具有损伤小，术后恢复快等优点。而在微创治疗过程中常需借助各种医疗器械建立操作通道或扩张天然腔道的生理或病理性狭窄，再通过建立的通道等腔道进行微创治疗。Minimally invasive treatment is widely used clinically, and it has the advantages of less damage and faster postoperative recovery. In the process of minimally invasive treatment, it is often necessary to use various medical devices to establish operating channels or expand the physiological or pathological stenosis of the natural cavity, and then perform minimally invasive treatment through the established channels and other channels.
目前，临床常用的建立操作通道的方法主要有以下两种：一种为首先采用穿刺针等器械进行穿刺，再沿着穿刺针放置不同管径的固定鞘管进行逐渐扩张，待扩张至所需大小后，再通过鞘管内部腔道进行操作，如经皮肾穿刺等。另一种对于天然腔道的扩张常采用的方法为首先沿腔道置入一根细的导丝作为引导物，再沿着这根导丝置入固定管径的鞘管或扩张支架等器械，退出导丝，通道构建完成，如输尿管镜检查、血管支架等。At present, there are mainly two methods for establishing an operation channel commonly used in clinical practice: one is to firstly puncture with a puncture needle and other instruments, and then place fixed sheaths of different diameters along the puncture needle to gradually expand, and wait until the expansion reaches the desired level. After size, the operation is performed through the inner cavity of the sheath, such as percutaneous renal puncture. Another commonly used method for dilating the natural lumen is to first place a thin guide wire along the lumen as a guide, and then insert a fixed-diameter sheath or expansion stent along the guide wire. , withdraw the guide wire, and the channel construction is completed, such as ureteroscopy, vascular stent, etc.
但是在临床使用中，以上方法均有诸多不足：采用固定鞘管进行逐步扩张不仅操作繁杂，而且在置管、拔管过程中鞘管与穿刺口周围组织直接摩擦，给病人造成较大痛苦；对于天然腔道采用固定鞘管扩张过程中，置入的固定鞘管的管径较大，强行大幅度扩张人体腔道和组织，给病人造成较大痛苦；而采用扩张支架对天然腔道进行扩张相比以上方法在置管过程中具有明显优势，但是其在置管后不易拔出，不但限制了其使用范围，而且由于放置后如出现突发状况而不能更换将影响其安全性。However, in clinical use, the above methods have many deficiencies: using a fixed sheath for gradual dilation is not only complicated to operate, but also directly rubs against the tissue around the puncture port during catheterization and extubation, causing great pain to the patient; For the dilation process of the natural lumen with fixed sheath, the diameter of the fixed sheath inserted is relatively large, which forcibly expands the human lumen and tissue, causing great pain to the patient; Compared with the above methods, dilation has obvious advantages in the catheterization process, but it is not easy to pull out after catheterization, which not only limits its application range, but also affects its safety because it cannot be replaced if an emergency occurs after placement.
发明内容Contents of the invention
本发明实施例中提供了一种医用操作通道支架，以解决现有技术中的鞘管在置入或拔出人体时，由于管径不可调节或不能拔出，造成操作困难和病人痛苦的问题。In the embodiment of the present invention, a medical operation channel bracket is provided to solve the problem of difficulty in operation and pain of the patient due to the non-adjustable diameter of the sheath tube in the prior art or the inability to pull it out when it is inserted into or pulled out of the human body .
为了解决上述技术问题，本发明实施例公开了如下技术方案：In order to solve the above technical problems, the embodiment of the present invention discloses the following technical solutions:
一种医用操作通道支架，包括：具有记忆功能的可扩张支架和用于与人体接触的回缩膜，所述回缩膜包覆于所述可扩张支架上，其中，A medical operation channel stent, comprising: an expandable stent with a memory function and a retractable film for contacting with the human body, the retractable film is coated on the expandable stent, wherein,
所述可扩张支架的两端通过相啮合的连接装置连接成圆筒状，所述连接装置包括固定连接件、第一连接部和第二连接部，远离所述回缩膜的所述第一连接部一侧设置为楔形面，所述第二连接部设置有圆孔，所述固定连接件贯穿连接各个所述圆孔；The two ends of the expandable stent are connected into a cylindrical shape through an engaged connecting device, and the connecting device includes a fixed connecting part, a first connecting part and a second connecting part, and the first connecting part away from the retractable membrane One side of the connecting part is set as a wedge-shaped surface, the second connecting part is provided with round holes, and the fixed connecting piece penetrates and connects each of the round holes;
所述第一连接部和所述第二连接部交替连接于所述可扩张支架的两端，所述可扩张支架一端的第二连接部与另一端的第一连接部的楔形面相接触，所述回缩膜对所述可扩张支架的圆周力大于所述第二连接部与所述第一连接部的楔形面间的摩擦力。The first connecting portion and the second connecting portion are alternately connected to both ends of the expandable stent, and the second connecting portion at one end of the expandable stent is in contact with the wedge-shaped surface of the first connecting portion at the other end, so that The circumferential force of the retractable film on the expandable stent is greater than the frictional force between the wedge-shaped surfaces of the second connection part and the first connection part.
优选地，所述可扩张支架包括镍钛合金支架。Preferably, the expandable stent comprises a Nitinol stent.
优选地，所述可扩张支架的一端连接所述第二连接部，所述可扩张支架的另一端连接交替设置的所述第一连接部和第二连接部。Preferably, one end of the expandable stent is connected to the second connecting portion, and the other end of the expandable stent is connected to the alternately arranged first and second connecting portions.
优选地，所述回缩膜包覆于所述可扩张支架的内外侧。Preferably, the retractable film covers the inside and outside of the expandable stent.
优选地，所述固定连接件包括连接线，所述圆孔沿所述可扩张支架径向方向设置，各个所述圆孔由连接线有序贯穿连接。Preferably, the fixing connector includes connecting wires, the circular holes are arranged along the radial direction of the expandable stent, and the circular holes are sequentially connected through connecting wires.
优选地，所述固定连接件包括连接棒，所述圆孔沿所述可扩张支架轴向方向设置，各个所述圆孔由连接棒有序贯穿连接。Preferably, the fixed connector includes a connecting rod, the circular holes are arranged along the axial direction of the expandable stent, and the circular holes are sequentially connected through the connecting rods.
优选地，所述连接装置包括螺母固线器，所述螺母固线器设置于所述可扩张支架径向方向的一端、固定连接所述连接线。Preferably, the connection device includes a nut wire retainer, the nut wire retainer is arranged at one end of the expandable stent in the radial direction, and is fixedly connected to the connection wire.
优选地，所述可扩张支架包括至少一个波纹网状支架。Preferably, said expandable stent comprises at least one corrugated mesh stent.
优选地，所述连接棒的端面直径大于所述可扩张支架的骨架的直径。Preferably, the diameter of the end surface of the connecting rod is larger than the diameter of the skeleton of the expandable stent.
优选地，与人体接触的所述回缩膜的内外壁为亲水性结构。Preferably, the inner and outer walls of the retractable film that are in contact with the human body are of a hydrophilic structure.
由以上技术方案可见，本发明实施例一种医用操作通道支架，包括：具有记忆功能的可扩张支架和用于与人体接触的回缩膜，所述回缩膜包覆于所述可扩张支架上，其中，所述可扩张支架的两端通过相啮合的连接装置连接成圆筒状，所述连接装置包括固定连接件、第一连接部和第二连接部，远离所述回缩膜的所述第一连接部一侧设置为楔形面，所述第二连接部设置有圆孔，所述固定连接件贯穿连接各个所述圆孔；所述第一连接部和所述第二连接部交替连接于所述可扩张支架的两端，所述可扩张支架一端的第二连接部与另一端的第一连接部的楔形面相接触，所述回缩膜对所述可扩张支架的圆周力大于所述第二连接部与所述第一连接部的楔形面间的摩擦力。It can be seen from the above technical solutions that the embodiment of the present invention is a medical operation channel stent, including: an expandable stent with a memory function and a retractable film for contacting with the human body, and the retractable film is coated on the expandable stent , wherein, the two ends of the expandable stent are connected into a cylindrical shape through an engaged connection device, and the connection device includes a fixed connection part, a first connection part and a second connection part, and the part far away from the retractable membrane One side of the first connecting part is set as a wedge-shaped surface, and the second connecting part is provided with round holes, and the fixed connecting piece penetrates and connects each of the round holes; the first connecting part and the second connecting part Alternately connected to both ends of the expandable stent, the second connecting portion at one end of the expandable stent is in contact with the wedge-shaped surface of the first connecting portion at the other end, and the circumferential force of the retractable film on the expandable stent greater than the frictional force between the wedge-shaped surfaces of the second connection part and the first connection part.
采用上述技术方案的通道支架中的可扩张支架具有记忆功能，在与人体温度相同或相近的室外温度下，设置可扩张支架的形状，将可扩张支架设置成圆筒状；在低于人体温度下，将所述可扩张支架设置成收缩状，此时的可扩张支架的管径比圆筒状时小。使用时，首先将所述通道支架置入体腔，由于所述可扩张支架具有记忆功能，当达到人体内后，相较于人体外，温度发生变化，可扩张支架在人体温度的影响下，恢复到原来设定的形状，可扩张支架恢复成圆筒状，可扩张支架将回缩膜支撑开，通道支架完全打开，工作通道建立完成；拔除可扩张支架时，将所述可扩张支架上的连接线拔出，所述连接装置中的第二连接部设置于所述第一连接部的楔形面内，支架外的弹性回缩膜压迫通道支架回弹，与所述第二连接部连接的所述可扩张支架的一端在回缩膜的作用下，开始向里卷曲，通道支架的直径缩小，减轻拔管阻力，利于拔管。The expandable support in the channel support adopting the above technical solution has a memory function, and the shape of the expandable support is set at an outdoor temperature that is the same as or close to the temperature of the human body, and the expandable support is set in a cylindrical shape; when the temperature is lower than that of the human body Next, the expandable stent is set in a contracted shape, and the diameter of the expandable stent at this time is smaller than that of a cylindrical shape. When in use, the channel stent is first placed into the body cavity. Since the expandable stent has a memory function, when it reaches the human body, the temperature changes compared with the outside of the human body, and the expandable stent recovers under the influence of the temperature of the human body. When the expandable stent returns to the original set shape, the expandable stent returns to a cylindrical shape, the expandable stent supports the retractable membrane, the channel stent is fully opened, and the working channel is established; when the expandable stent is pulled out, the expandable stent The connecting wire is pulled out, the second connecting part in the connecting device is arranged in the wedge-shaped surface of the first connecting part, the elastic retractable film outside the bracket presses the channel bracket to rebound, and the second connecting part connected One end of the expandable stent begins to curl inward under the action of the retractable membrane, and the diameter of the channel stent is reduced, which reduces the extubation resistance and facilitates extubation.
附图说明Description of 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作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings on the premise of not paying creative work.
图1为本发明实施例提供的第一种医用操作通道支架整体结构示意图；Fig. 1 is a schematic diagram of the overall structure of the first medical operation channel bracket provided by the embodiment of the present invention;
图2为本发明实施例提供的第一种医用操作通道支架横切剖面示意图；Fig. 2 is a cross-sectional schematic diagram of the first medical operation channel bracket provided by the embodiment of the present invention;
图3为本发明实施例提供的第一种医用操作通道支架局部示意图；Fig. 3 is a partial schematic diagram of the first medical operation channel bracket provided by the embodiment of the present invention;
图4为本发明实施例提供的第一种医用操作通道支架收缩时的横切剖面示意图；Fig. 4 is a schematic cross-sectional view of the first medical operation channel support provided by the embodiment of the present invention when it is contracted;
图5为本发明实施例提供的第一种医用操作通道支架未连接时局部示意图；Fig. 5 is a partial schematic diagram of the first medical operation channel support provided by the embodiment of the present invention when it is not connected;
图6为本发明实施例提供的第一种医用操作通道支架连接时局部示意图；Fig. 6 is a partial schematic diagram of the connection of the first medical operation channel bracket provided by the embodiment of the present invention;
图7为本发明实施例提供的第二种医用操作通道支架整体结构示意图；Fig. 7 is a schematic diagram of the overall structure of the second medical operation channel bracket provided by the embodiment of the present invention;
图8为本发明实施例提供的第二种医用操作通道支架横切剖面示意图；Fig. 8 is a cross-sectional schematic diagram of a second medical operation channel bracket provided by an embodiment of the present invention;
图9为本发明实施例提供的第二种医用操作通道支架局部示意图；Fig. 9 is a partial schematic diagram of the second medical operation channel bracket provided by the embodiment of the present invention;
图10为本发明实施例提供的第三种医用操作通道支架横切剖面示意图；Fig. 10 is a cross-sectional schematic diagram of a third medical operation channel bracket provided by an embodiment of the present invention;
图11为本发明实施例提供的第四种医用操作通道支架横切剖面示意图；Fig. 11 is a cross-sectional schematic diagram of the fourth medical operation channel bracket provided by the embodiment of the present invention;
图1-图11，符号表示：Figure 1-Figure 11, symbols indicate:
1-回缩膜，2-可扩张支架，3-连接装置，31-固定连接件，32第一连接部，33-第二连接部。1-retractable film, 2-expandable stent, 3-connecting device, 31-fixed connector, 32 first connecting part, 33-second connecting part.
具体实施方式Detailed ways
为了使本技术领域的人员更好地理解本发明中的技术方案，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。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，都应当属于本发明保护的范围。In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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 The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
本发明提供了一种医用操作通道建立支架，通过扩张及收缩的形式，降低了置管及拔管对人体组织的造成的痛苦及损伤的风险，为鞘管的使用提供了安全、简便及广泛适用性。The invention provides a stent for establishing a medical operation channel. Through expansion and contraction, the risk of pain and damage to human tissues caused by catheterization and extubation is reduced, and the use of the sheath tube provides safe, convenient and extensive support. applicability.
为了使本技术领域的人员更好地理解本发明方案，下面结合附图和实施方式对本发明作进一步的详细说明。In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
实施例一Embodiment one
参见图1、图2及图3，图1为本发明实施例提供的第一种医用操作通道支架整体结构示意图，图2为本发明实施例提供的第一种医用操作通道支架横切剖面示意图；图3为本发明实施例提供的第一种医用操作通道支架局部示意图。Referring to Figure 1, Figure 2 and Figure 3, Figure 1 is a schematic diagram of the overall structure of the first medical operation channel bracket provided by the embodiment of the present invention, and Figure 2 is a schematic cross-sectional schematic diagram of the first medical operation channel bracket provided by the embodiment of the present invention ; FIG. 3 is a partial schematic diagram of the first medical operation channel bracket provided by the embodiment of the present invention.
本发明实施例提供了一种医用操作通道支架，包括：具有记忆功能的可扩张支架2和用于与人体接触的回缩膜1，所述回缩膜1包覆于所述可扩张支架2的内外侧。An embodiment of the present invention provides a medical operation channel stent, comprising: an expandable stent 2 with a memory function and a retractable film 1 for contacting with the human body, the retractable film 1 is coated on the expandable stent 2 inside and outside.
所述可扩张支架2的两端通过相啮合的连接装置3连接成圆筒状，所述连接装置3包括固定连接件31、第一连接部32和第二连接部33，远离所述回缩膜1的所述第一连接部32一侧设置为楔形面，所述第二连接部33设置有圆孔，所述固定连接件31贯穿连接各个所述圆孔。Both ends of the expandable stent 2 are connected into a cylindrical shape through an engaged connection device 3, and the connection device 3 includes a fixed connection part 31, a first connection part 32 and a second connection part 33, away from the retraction One side of the first connecting part 32 of the membrane 1 is configured as a wedge-shaped surface, and the second connecting part 33 is provided with round holes, and the fixed connecting part 31 penetrates and connects each of the round holes.
所述可扩张支架2包括至少一个波纹网状支架，且所述波纹网状支架的内径随所述扩张管的作用增大，所述网状支架则由两侧网状骨架延伸而成的环交错组成并自支架底端延伸至顶端。所述可扩张支架2可由镍钛合金制成。The expandable stent 2 includes at least one corrugated mesh stent, and the inner diameter of the corrugated mesh stent increases with the action of the expansion tube, and the mesh stent is a ring formed by extending the mesh skeleton on both sides. The staggered composition extends from the bottom to the top of the stent. The expandable stent 2 can be made of nickel-titanium alloy.
镍钛合金是一种形状记忆合金，形状记忆合金是能将自身的塑性变形在某一特定温度下自动恢复为原始形状的特种合金。它的伸缩率在20％以上，疲劳寿命达1*107，阻尼特性比普通的弹簧高10倍，其耐腐蚀性优于目前最好的医用不锈钢，因此可以满足各类工程和医学的应用需求，是一种非常优秀的功能材料。Nickel-titanium alloy is a shape memory alloy, which is a special alloy that can automatically restore its own plastic deformation to its original shape at a certain temperature. Its stretch rate is above 20%, its fatigue life is 1*107 , its damping characteristic is 10 times higher than that of ordinary springs, and its corrosion resistance is better than the best medical stainless steel at present, so it can meet various engineering and medical applications It is a very excellent functional material.
镍钛合金除具有独特的形状记忆功能外，还具有耐磨损、抗腐蚀、高阻尼和超弹性等优异特点。In addition to its unique shape memory function, nickel-titanium alloy also has excellent characteristics such as wear resistance, corrosion resistance, high damping and superelasticity.
本发明中的可扩张支架2并不仅仅限于上述镍钛合金，凡是具有记忆功能的材质，且适宜用作医用材料均可。The expandable stent 2 in the present invention is not limited to the nickel-titanium alloy mentioned above, any material with a memory function and suitable for use as a medical material can be used.
本发明中，上述可扩张支架2的材质只是其中的一种实现方式，但是并不应当将其作为本发明保护范围的限制，本领域技术人员根据实际情况可选择其他的材质，其均应当落入本发明的保护范围之内。In the present invention, the material of the above-mentioned expandable stent 2 is only one of the implementation methods, but it should not be regarded as a limitation of the protection scope of the present invention. Those skilled in the art can choose other materials according to the actual situation, which should fall into Into the protection scope of the present invention.
本发明实施例中，所述可扩张支架2的一端连接所述第二连接部33，所述可扩张支架2的另一端连接交替设置的所述第一连接部32和第二连接部33，如此设置使得所述可扩张支架2收缩时，只与所述第二连接部33连接的一端向里卷曲收缩，避免所述可扩张支架2收缩时，由于两端相互交叉而造成可扩张支架2的卡塞，造成无法收缩的情况。In the embodiment of the present invention, one end of the expandable stent 2 is connected to the second connecting portion 33, and the other end of the expandable stent 2 is connected to the alternately arranged first connecting portions 32 and second connecting portions 33, It is set so that when the expandable stent 2 shrinks, only one end connected to the second connecting portion 33 curls and shrinks inwardly, so as to prevent the expandable stent 2 from crossing each other when the expandable stent 2 shrinks. Jamming, resulting in failure to shrink the situation.
本实施例中，第二连接部33上的圆孔沿所述可扩张支架2的轴向方向设置，所述固定连接件31为连接棒，各个所述圆孔由连接棒有序贯穿连接。为了防止所述连接棒在扩张过程中不会发生弯曲而难于拔出，所述连接棒的端面直径应该比所述可扩张支架2的网状骨架大。In this embodiment, the circular holes on the second connecting portion 33 are arranged along the axial direction of the expandable stent 2 , the fixed connectors 31 are connecting rods, and the circular holes are sequentially connected through the connecting rods. In order to prevent the connecting rod from being bent and difficult to pull out during expansion, the diameter of the end surface of the connecting rod should be larger than the mesh skeleton of the expandable stent 2 .
上述可扩张支架2的固定方式只是其中的一种实现方式，但是并不应当将其作为本发明保护范围的限制，本领域技术人员根据实际情况可选择其他的固定方式，其均应当落入本发明的保护范围之内。The fixing method of the above-mentioned expandable stent 2 is only one of the implementation methods, but it should not be regarded as a limitation of the protection scope of the present invention. Those skilled in the art can choose other fixing methods according to the actual situation, which should all fall within this scope. within the scope of protection of the invention.
可扩张支架2外径应比所述回缩膜1内径稍大，埋藏于弹性的回缩膜1内，以保证在置入过程中不会出现所述回缩膜1脱落，以便于扩张及收缩的均匀性。The outer diameter of the expandable stent 2 should be slightly larger than the inner diameter of the retractable membrane 1, and be embedded in the elastic retractable membrane 1 to ensure that the retractable membrane 1 will not fall off during the insertion process, so as to facilitate expansion and Uniformity of shrinkage.
所述回缩膜1外层该为亲水材料，可以保证支架在置入过程中减小摩擦，减轻病人痛苦。本发明实施例中所述回缩膜1可采用医用硅胶膜等良好弹性的弹性材料制成。The outer layer of the retractable film 1 should be made of a hydrophilic material, which can ensure less friction during the placement of the stent and reduce pain for the patient. The retractable film 1 in the embodiment of the present invention can be made of elastic material with good elasticity such as medical silicone film.
使用前，可扩张支架2和回缩膜1紧密结合，均处于收缩状态，如图4所示，图4为本发明实施例提供的第一种医用操作通道支架收缩时的横切剖面示意图。所述第一连接部32和第二连接部33已通过所述连接棒连接在一起，即所述可扩张支架2的两端已连接好，所述可扩张支架2已被所述回缩膜1包覆。Before use, the expandable stent 2 and the retractable membrane 1 are tightly combined and both are in a contracted state, as shown in FIG. 4 , which is a schematic cross-sectional view of the first medical operation channel stent provided by the embodiment of the present invention when it is contracted. The first connecting part 32 and the second connecting part 33 have been connected together by the connecting rod, that is, the two ends of the expandable stent 2 have been connected, and the expandable stent 2 has been covered by the retractable membrane. 1 cladding.
参见图5和图6，图5为本发明实施例提供的第一种医用操作通道支架未连接时局部示意图；图6为本发明实施例提供的第一种医用操作通道支架连接时局部示意图；所述第一连接部32和所述第二连接部33交替连接于所述可扩张支架2的两端，所述可扩张支架2一端的第二连接部33与另一端的第一连接部32的楔形面相接触。所述回缩膜1对所述可扩张支架2的圆周力大于所述第二连接部33与所述第一连接部32的楔形面间的摩擦力。Referring to Fig. 5 and Fig. 6, Fig. 5 is a partial schematic diagram when the first medical operation channel bracket provided by the embodiment of the present invention is not connected; Fig. 6 is a partial schematic diagram when the first medical operation channel bracket provided by the embodiment of the present invention is connected; The first connecting portion 32 and the second connecting portion 33 are alternately connected to both ends of the expandable stent 2, the second connecting portion 33 at one end of the expandable stent 2 is connected to the first connecting portion 32 at the other end. The wedge faces are in contact. The circumferential force of the retractable membrane 1 on the expandable stent 2 is greater than the frictional force between the second connecting portion 33 and the wedge-shaped surface of the first connecting portion 32 .
使用前，在与人体温度相同或相近的室外温度下，设置可扩张支架2的形状，将可扩张支架2设置成圆筒状；在低于人体温度的环境中，将所述可扩张支架2设置成收缩状，此时的可扩张支架2的管径比圆筒状时小。Before use, set the shape of the expandable stent 2 at an outdoor temperature that is the same as or close to the temperature of the human body, and set the expandable stent 2 into a cylindrical shape; Set in a contracted shape, the diameter of the expandable stent 2 at this time is smaller than that of a cylindrical shape.
使用时，首先将所述通道支架置入体腔，由于所述可扩张支架2具有记忆功能，当达到人体内后，相较于人体外，温度发生变化，可扩张支架2在人体温度的影响下，恢复到原来设定的形状，可扩张支架2恢复成圆筒状，可扩张支架2将回缩膜1支撑开，所述可扩张支架2的圆周力大于所述回缩膜1的圆周力，即所述可扩张支架2不会因所述回缩膜1的作用而被压缩，导致可扩张支架2变形或通道支架的直径变小，通道支架完全打开，工作通道建立完成；拔除可扩张支架2时，将所述可扩张支架2上的连接棒拔出，所述连接装置3中的第二连接部33设置于所述第一连接部32的楔形面内，支架外的弹性的所述回缩膜1压迫通道支架回弹，与所述第二连接部33连接的所述可扩张支架2的一端在回缩膜1的作用下，开始向里卷曲，通道支架的直径缩小，减轻拔管阻力，利于拔管。When in use, the channel stent is first placed into the body cavity. Since the expandable stent 2 has a memory function, when it reaches the human body, the temperature changes compared with the outside of the human body, and the expandable stent 2 is affected by the temperature of the human body. , return to the original set shape, the expandable stent 2 returns to a cylindrical shape, the expandable stent 2 supports the retractable membrane 1, and the circumferential force of the expandable stent 2 is greater than the circumferential force of the retractable membrane 1 , that is, the expandable stent 2 will not be compressed due to the action of the retractable membrane 1, causing the expandable stent 2 to deform or the diameter of the channel stent to become smaller, the channel stent is fully opened, and the working channel is established; When using the stent 2, pull out the connecting rod on the expandable stent 2, the second connecting part 33 in the connecting device 3 is arranged in the wedge-shaped surface of the first connecting part 32, and the elastic part outside the stent The retractable film 1 presses the channel support to rebound, and one end of the expandable support 2 connected to the second connecting portion 33 begins to curl inward under the action of the retractable film 1, and the diameter of the channel support decreases, reducing the Extubation resistance, conducive to extubation.
本发明相比现有技术，通过设置扩张管，使得支架在置入时以较小腔径进入体腔，降低了置入过程中对腔道周围组织损伤的风险；置入后再缓慢径向扩张人体腔道及组织，大大减轻了患者痛苦；利用回缩膜1的压迫回缩，减小了支架拔出时的直径，减轻了拔管阻力和造成的痛苦。Compared with the prior art, the present invention, by setting the expansion tube, enables the stent to enter the body cavity with a smaller lumen diameter during insertion, reducing the risk of damage to the tissues around the lumen during the insertion process; and then slowly expands radially after insertion The cavity and tissue of the human body greatly relieve the pain of the patient; the compression and retraction of the retractable membrane 1 reduces the diameter of the stent when it is pulled out, and reduces the resistance and pain caused by the extubation.
实施例二Embodiment two
如图7、图8及图9所示，图7为本发明实施例提供的第二种医用操作通道支架整体结构示意图；图8为本发明实施例提供的第二种医用操作通道支架横切剖面示意图；图9为本发明实施例提供的第二种医用操作通道支架局部示意图。As shown in Figure 7, Figure 8 and Figure 9, Figure 7 is a schematic diagram of the overall structure of the second medical operation channel bracket provided by the embodiment of the present invention; Figure 8 is a cross-section of the second medical operation channel bracket provided by the embodiment of the present invention Schematic cross-sectional view; FIG. 9 is a partial schematic view of the second medical operation channel bracket provided by the embodiment of the present invention.
该实施例与实施例一的不同之处在于该实施例中采用的可扩张支架2的固定方式不同。本实施例中的固定连接件31不是采用连接棒，而是采用连接线；第二连接部33上的圆孔沿所述可扩张支架2径向方向设置，自顶端有序等间距的排列至末端组合而成，并且在所述通道支架的末端有一螺母固线器，所述螺母固线器设置于所述可扩张支架2径向方向的一端、固定连接所述连接线。在使用前，有一根丝线穿过各个圆孔，将所述可扩张支架2固定为一完整结构，并在末端使用固线器将丝线固定；待拔出所述可扩张支架2及回缩膜1时，拧开螺母固线器，将丝线放开一端并抽出丝线。由于回缩膜1的压迫，可扩张支架2收缩卷曲，管径变小，拔出时减轻了阻力，以利于拔管。The difference between this embodiment and the first embodiment lies in that the fixing method of the expandable stent 2 used in this embodiment is different. The fixed connector 31 in this embodiment is not a connecting rod, but a connecting wire; the round holes on the second connecting part 33 are arranged along the radial direction of the expandable stent 2, and are arranged in an orderly and equidistant manner from the top to the The ends are combined, and there is a nut wire fixer at the end of the channel bracket. The nut wire fixer is arranged at one end of the expandable bracket 2 in the radial direction, and is fixedly connected to the connecting wire. Before use, a silk thread passes through each round hole to fix the expandable stent 2 into a complete structure, and fix the thread at the end with a wire fixer; the expandable stent 2 and retractable membrane are to be pulled out 1 o'clock, unscrew the nut wire fixer, let go of one end of the wire and pull out the wire. Due to the compression of the retractable membrane 1, the expandable stent 2 shrinks and curls, the tube diameter becomes smaller, and the resistance is reduced when pulling out, so as to facilitate extubation.
上述可扩张支架2的固定方式只是其中的一种实现方式，但是并不应当将其作为本发明保护范围的限制，本领域技术人员根据实际情况可选择其他的固定方式，其均应当落入本发明的保护范围之内。The fixing method of the above-mentioned expandable stent 2 is only one of the implementation methods, but it should not be regarded as a limitation of the protection scope of the present invention. Those skilled in the art can choose other fixing methods according to the actual situation, which should all fall within this scope. within the scope of protection of the invention.
实施例三Embodiment three
如图10所示，该实施例与实施例一相比的不同之处在于，本实施例中的回缩膜紧裹于可扩张支架2外侧，两者不相互粘连，可扩张支架2采用齿状结合，利用连接装置3相连接，采用连接棒进行固定。在使用前，连接棒将所述可扩张支架2固定为整体结构；在拔出所述可扩张支架2时，将连接棒拔出，此时由于回缩膜1的压迫，可扩张支架2断裂回缩，以便于收缩后阻力减轻，拔出回缩膜1及可扩张支架2。对于该实施例，我们同样可以采用与实施例二中相同的结合部位，采用丝线将可扩张支架2进行固定，在拔管时可以将丝线进行拆卸，收缩后去除支架及回缩膜1。As shown in Figure 10, the difference between this embodiment and Embodiment 1 is that the retractable membrane in this embodiment is tightly wrapped on the outside of the expandable stent 2, and the two are not adhered to each other, and the expandable stent 2 adopts toothed The shape is combined, connected by connecting device 3, and fixed by connecting rods. Before use, the connecting rod fixes the expandable stent 2 into an integral structure; when the expandable stent 2 is pulled out, the connecting rod is pulled out, and at this time, the expandable stent 2 breaks due to the compression of the retractable membrane 1 Retract, in order to reduce the resistance after contraction, pull out the retractable membrane 1 and the expandable stent 2 . For this embodiment, we can also use the same binding site as in Embodiment 2, and use silk thread to fix the expandable stent 2 , the silk thread can be disassembled during extubation, and the stent and the retractable membrane 1 can be removed after contraction.
实施例四Embodiment four
如图11所示，该实施例与实施例三相比的不同之处在于，本实施例中的可扩张支架2采用多个结合部位，该部位均采用齿状结合，利用连接装置3相连接，采用连接棒进行固定。在使用前，各个连接棒将所述可扩张支架2固定为整体结构；在拔出所述可扩张支架2时，将各个连接棒拔出，此时由于回缩膜1的压迫，可扩张支架2断裂散开，以便于各个部件逐一取出或收缩后阻力减轻，拔出回缩膜1及可扩张支架2。对于该实施例，我们同样可以采用与实施例二中相同的结合部位，采用丝线将各个部件进行组合，在拔管时可以将各个点的丝线进行拆卸，收缩后逐一取出或整体去除支架。As shown in Figure 11, the difference between this embodiment and the third embodiment is that the expandable stent 2 in this embodiment adopts a plurality of joint parts, and the parts are all tooth-shaped joints, which are connected by a connecting device 3 , fixed with connecting rods. Before use, each connecting rod fixes the expandable stent 2 as an integral structure; 2 Break and scatter, so that each component can be taken out one by one or the resistance is reduced after contraction, and the retractable membrane 1 and the expandable stent 2 are pulled out. For this embodiment, we can also use the same joint site as in Embodiment 2, and use silk threads to combine the various components. During extubation, the silk threads at various points can be disassembled, and the stents can be removed one by one or as a whole after contraction.
可见，本发明所述的通道支架是在置入体腔后在通过可扩张支架2的记忆功能，实现以自扩张的形式扩大支架内部管腔，避免了较大直径的鞘管直接强行置入体腔时，大幅度扩张人体腔道和组织的情况，相应降低了直接外部扩张损伤周围组织的风险，同时通过连续缓慢扩张的方式扩张人体腔道和组织减轻了病人痛苦。It can be seen that the channel stent according to the present invention realizes expanding the internal lumen of the stent in the form of self-expansion through the memory function of the expandable stent 2 after being inserted into the body cavity, avoiding the sheath with a larger diameter being directly forcibly inserted into the body cavity At the same time, the large-scale expansion of the human cavity and tissues reduces the risk of direct external expansion and damages the surrounding tissues, and at the same time expands the human cavity and tissues through continuous and slow expansion to reduce the pain of the patient.
需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.
以上所述仅是本发明的具体实施方式，使本领域技术人员能够理解或实现本发明。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above descriptions are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
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| CN201610152685.0ACN105832368B (en) | 2016-03-17 | 2016-03-17 | A kind of medical operating walk way holder |
| Application Number | Priority Date | Filing Date | Title |
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| CN201610152685.0ACN105832368B (en) | 2016-03-17 | 2016-03-17 | A kind of medical operating walk way holder |
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| CN105832368A CN105832368A (en) | 2016-08-10 |
| CN105832368Btrue CN105832368B (en) | 2018-07-31 |
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| CN201610152685.0AExpired - Fee RelatedCN105832368B (en) | 2016-03-17 | 2016-03-17 | A kind of medical operating walk way holder |
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