CN115530967A - Medical catheter - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及医疗器械技术领域，特别涉及一种医疗导管。The invention relates to the technical field of medical devices, in particular to a medical catheter.
背景技术Background technique
房颤是一种常见的心律失常疾病之一。目前通过电生理消融导管实施环肺静脉消融手术是临床医生治疗这类患者的常用手段。消融手术中需要配套相应的电生理标测导管来寻找肺静脉口、获取心内电信号和监测消融效果。设计制造合适的标测导管来快速有效的监测肺静脉口处的心电活动，同时简化手术操作和提高效率是临床医生的一个重要需求。Atrial fibrillation is one of the common arrhythmia diseases. At present, circumpulmonary vein ablation by electrophysiological ablation catheter is a common method for clinicians to treat such patients. Corresponding electrophysiological mapping catheters are required to find the pulmonary vein ostium, obtain intracardiac electrical signals, and monitor the ablation effect during ablation surgery. It is an important demand for clinicians to design and manufacture a suitable mapping catheter to quickly and effectively monitor the cardiac electrical activity at the pulmonary vein ostium, while simplifying the operation and improving efficiency.
发明内容Contents of the invention
本发明的目的在于提供一种医疗导管，以解决现有技术中的一个或多个问题。The purpose of the present invention is to provide a medical catheter to solve one or more problems in the prior art.
基于上述思想，本发明提供一种医疗导管，所述医疗导管包括具有形状记忆功能的远端定形段和套设于所述远端定形段的多个环电极；Based on the above ideas, the present invention provides a medical catheter, which includes a distal shaped section with a shape memory function and a plurality of ring electrodes sleeved on the distal shaped section;
所述远端定形段包括腔管和穿设于所述腔管内的定形丝；The distal shaping section includes a lumen and a shaping wire passing through the lumen;
所述定形丝包括回勾段、环形圈段和直杆段，所述回勾段连接于所述环形圈段的远端，且所述回勾段的远端朝所述环形圈段的中心偏转，使得所述回勾段在所述环形圈段上的正投影位于所述环形圈段内；所述直杆段连接于所述环形圈段的近端，且所述直杆段与所述环形圈段的中心线平行或重合；The setting wire includes a hook section, an annular loop section and a straight bar section, the hook section is connected to the far end of the annular loop section, and the distal end of the hook section is toward the center of the annular loop section deflection, so that the orthographic projection of the hook segment on the annular ring segment is located in the annular ring segment; the straight rod segment is connected to the proximal end of the annular ring segment, and the straight rod segment and the The centerlines of the above ring segments are parallel or coincident;
多个所述环电极间隔分布于所述腔管上。A plurality of the ring electrodes are distributed on the lumen at intervals.
可选的，在所述的医疗导管中，所述定形丝还包括过渡段，所述直杆段通过所述过渡段与所述环形圈段过渡连接，所述过渡段用于限定所述回勾段的位移，使得所述腔管上的多个所述环电极之间无交叠。Optionally, in the medical catheter, the shaped wire further includes a transition section through which the straight rod section is transitionally connected with the annular ring section, and the transition section is used to define the loop The displacement of the hook segment makes there be no overlap among the plurality of ring electrodes on the lumen.
可选的，在所述的医疗导管中，所述过渡段包括偏转段和内勾段，所述直杆段、所述偏转段、所述内勾段和所述环形圈段依次过渡连接，所述内勾段的近端朝所述环形圈段的中心偏转，且在所述环形圈段上的正投影位于所述环形圈段内，所述内勾段用于限定所述回勾段的位移，使得所述腔管上的多个所述环电极之间无交叠。Optionally, in the medical catheter, the transition section includes a deflection section and an inner hook section, and the straight rod section, the deflection section, the inner hook section, and the annular ring section are sequentially transitioned, The proximal end of the inner hook segment is deflected toward the center of the annular ring segment, and the orthographic projection on the annular ring segment is located in the annular ring segment, and the inner hook segment is used to define the return hook segment displacement, so that there is no overlap between the plurality of ring electrodes on the lumen.
可选的，在所述的医疗导管中，所述定形丝被配置为，在自由状态下，在所述环形圈段的正投影上，所述直杆段位于所述环形圈段的不与所述回勾段所在的象限及所述内勾段所在的象限产生重叠的象限内，在穿设于所述腔管后，所述直杆段与所述环形圈段的中心线重合。可选的，在所述的医疗导管中，所述偏转段和所述内勾段在所述环形圈段上的正投影的弧形半径相等。Optionally, in the medical catheter, the shaped wire is configured such that, in a free state, on the orthographic projection of the annular loop segment, the straight rod segment is located at In the quadrant where the quadrant where the hook segment is located and the quadrant where the hook segment is located overlap, after passing through the lumen, the center line of the straight rod segment coincides with the centerline of the annular ring segment. Optionally, in the medical catheter, arc radii of the orthographic projections of the deflection section and the inner hook section on the annular ring section are equal.
可选的，在所述的医疗导管中，所述环电极的边缘通过粘合剂与所述腔管平滑过渡相接。Optionally, in the medical catheter, the edge of the ring electrode is in smooth transition with the lumen through an adhesive.
可选的，在所述的医疗导管中，所述定形丝还包括限位部，所述限位部设于所述定形丝的远端，用于限定所述腔管与所述定形丝的相对位置。Optionally, in the medical catheter, the shaped wire further includes a limiting part, the limiting part is arranged at the distal end of the shaped wire, and is used to limit the distance between the lumen and the shaped wire. relative position.
可选的，在所述的医疗导管中，所述限位部的外周通过粘合剂与所述腔管平滑过渡相接。Optionally, in the medical catheter, the outer periphery of the limiting part is in smooth transition with the lumen through an adhesive.
可选的，在所述的医疗导管中，所述定形丝的表层为绝缘层。Optionally, in the medical catheter, the surface layer of the shaped wire is an insulating layer.
可选的，在所述的医疗导管中，所述环形圈段为螺纹结构，所述螺纹结构的螺纹圈数的范围为1～3圈。Optionally, in the medical catheter, the annular segment is a thread structure, and the number of turns of the thread structure ranges from 1 to 3 turns.
可选的，在所述的医疗导管中，所述医疗导管还包括主体管，所述腔管包括位于近端的扩口区，所述腔管通过所述扩口区套接于所述主体管的远端，使得所述腔管与所述主体管过渡连接。Optionally, in the medical catheter, the medical catheter further includes a main body tube, the lumen tube includes a flaring area at the proximal end, and the lumen tube is sleeved on the main body through the flaring area the distal end of the tube such that the lumen is transitionally connected to the main body tube.
可选的，在所述的医疗导管中，所述医疗导管还包括保护管，所述保护管穿设于所述主体管内，所述环电极的导线经所述保护管穿出所述主体管的近端。Optionally, in the medical catheter, the medical catheter further includes a protective tube, the protective tube is passed through the main tube, and the lead wire of the ring electrode passes through the main tube through the protective tube the proximal end.
可选的，在所述的医疗导管中，所述腔管包括用于穿设所述直杆段的直杆区，所述扩口区设于所述直杆区的远端；所述保护管穿过所述扩口区延伸至所述直杆区内一预设距离。Optionally, in the medical catheter, the lumen includes a straight rod area for passing through the straight rod section, and the flaring area is arranged at the distal end of the straight rod area; the protection A tube extends through the flaring region to a predetermined distance within the straight rod region.
可选的，在所述的医疗导管中，所述预设距离的取值范围为2mm～10mm。Optionally, in the medical catheter, the preset distance ranges from 2 mm to 10 mm.
可选的，在所述的医疗导管中，所述医疗导管还包括套设于所述主体管的取直管和扭转器，所述取直管的近端与所述扭转器的远端相接，所述扭转器通过相对所述主体管旋紧或旋松，以限定所述取直管相对所述主体管的移动，所述取直管用于使所述远端定形段从自由状态变至为控形状态。Optionally, in the medical catheter, the medical catheter further includes a straightening tube and a twister sheathed on the main body tube, the proximal end of the straightening tube is connected to the distal end of the twister. Next, the twister is tightened or unscrewed relative to the main body tube to limit the movement of the straightening tube relative to the main body tube, and the straightening tube is used to change the distal shaping section from a free state To the control state.
可选的，在所述的医疗导管中，所述扭转器包括上部件和下部件，所述上部件的远端与所述取直管相接，所述上部件的近端与所述下部件的远端螺纹连接，所述下部件的远端为多瓣结构，所述下部件相对于所述上部件旋紧，使得所述多瓣结构与所述主体管相抵靠时，限定所述取直管相对所述主体管的移动。Optionally, in the medical catheter, the twister includes an upper part and a lower part, the distal end of the upper part is connected to the straightening tube, and the proximal end of the upper part is connected to the lower part. The distal end of the part is threaded, the distal end of the lower part is a multi-lobed structure, and the lower part is screwed tightly relative to the upper part, so that when the multi-lobed structure abuts against the main tube, the Take the movement of the straight tube relative to the main tube.
综上所述，本发明提供的所述医疗导管，所述医疗导管包括具有形状记忆功能的远端定形段和套设于所述远端定形段的多个环电极；所述定形丝包括回勾段、环形圈段和直杆段，所述回勾段连接于所述环形圈段的远端，且所述回勾段的远端朝所述环形圈段的中心偏转，使得所述回勾段在所述环形圈段上的正投影位于所述环形圈段内；所述直杆段连接于所述环形圈段的近端，且所述直杆段与所述环形圈段的中心线平行或重合；多个所述环电极间隔分布于所述腔管上。To sum up, the medical catheter provided by the present invention includes a shaped distal section with a shape memory function and a plurality of ring electrodes sheathed on the shaped distal section; the shaped wire includes a loop A hook segment, an annular ring segment and a straight rod segment, the hook segment is connected to the far end of the annular ring segment, and the far end of the hook segment is deflected toward the center of the annular ring segment, so that the return hook segment The orthographic projection of the hook segment on the annular ring segment is located in the annular ring segment; the straight rod segment is connected to the proximal end of the annular ring segment, and the center of the straight rod segment and the annular ring segment The lines are parallel or coincident; a plurality of the ring electrodes are distributed on the lumen at intervals.
与现有技术相比，具有如下有益效果：Compared with the prior art, it has the following beneficial effects:
(1)本发明提供的所述医疗导管，所述远端定形段的所述回勾段的远端位于所述环形圈段内，医生逆向旋转导管时，导管头端不会插入组织表面，此外，导管在操控过程中，头端不容易与环形圈段缠绕在一起，避免因环电极之间相互交叠，影响电信号的采集；(1) In the medical catheter provided by the present invention, the distal end of the hook section of the distal shaped section is located in the annular ring section, and when the doctor reversely rotates the catheter, the catheter tip will not be inserted into the tissue surface, In addition, during the operation of the catheter, the head end is not easy to be entangled with the ring segment, so as to avoid the overlapping of the ring electrodes and affect the collection of electrical signals;
(2)进一步的，本发明提供的所述医疗导管还包括过渡段，所述过渡段使得所述环形圈段和所述直杆段平滑过渡连接，避免因用于形成所述远端定形段的定形丝或者导管头端导线弯折导致导管使用寿命降低，而且当因受到组织挤压，所述回勾段向靠近所述直杆段移动时，所述过渡段能够起到阻挡作用，进一步避免因所述回勾段的变形而与所述环形圈段缠绕，使得环电极之间相互交叠，从而影响标测或消融的准确性；(2) Further, the medical catheter provided by the present invention also includes a transition section, which enables a smooth transition connection between the annular ring section and the straight rod section, avoiding the The bending of the shaped wire or the lead wire at the tip of the catheter leads to a reduction in the service life of the catheter, and when the hook section moves closer to the straight rod section due to tissue extrusion, the transition section can play a blocking role, further Avoiding entanglement with the ring segment due to the deformation of the hook segment, so that the ring electrodes overlap each other, thereby affecting the accuracy of mapping or ablation;
(3)进一步的，所述过渡段包括偏转段和内勾段，所述直杆段依次通过所述偏转段和所述内勾段与所述环形圈段过渡连接，所述定形丝被配置为，在自由状态下，可通过所述偏转段的偏转使得所述直杆段在所述环形圈段上的正投影的位置发生改变，即，通过所述过渡段可使得所述远端定形段为中心结构或偏心结构，可满足对于不同肺静脉结构的标测；(3) Further, the transition section includes a deflection section and an inner hook section, and the straight bar section is transitionally connected with the annular ring section through the deflection section and the inner hook section in turn, and the setting wire is configured For, in the free state, the position of the orthographic projection of the straight rod section on the annular ring section can be changed by the deflection of the deflection section, that is, the distal end can be shaped by the transition section The segment is a central structure or an eccentric structure, which can satisfy the mapping of different pulmonary vein structures;
(4)进一步的，所述偏转段和内勾段在所述环形圈段上的正投影的弧形半径相等，使得所述环形圈段和所述直杆段之间呈现较佳的平滑过渡效果，避免定形丝或者导管头端导线弯折导致导管使用寿命降低；(4) Further, the arc radii of the orthographic projections of the deflection section and the inner hook section on the annular ring section are equal, so that there is a better smooth transition between the annular ring section and the straight rod section The effect is to avoid the bending of the setting wire or the wire at the tip of the catheter, which will reduce the service life of the catheter;
(5)导管的主体管内穿设有保护管，所述保护管将延伸到主体管内的定形丝及环电极导线与主体管内壁隔绝，保证主体管内的电绝缘性能和减少信号干扰，且所述保护管延伸至所述腔管的穿设有所述直杆段的直杆区内，可增加主体管和所述腔管的连接强度，同时对所述直杆区起到支撑与保护作用。(5) A protective tube is pierced in the main tube of the catheter, and the protective tube isolates the shaped wire and the ring electrode wire extending into the main tube from the inner wall of the main tube, so as to ensure the electrical insulation performance in the main tube and reduce signal interference, and the The protection tube extends into the straight rod region where the straight rod section passes through the lumen, which can increase the connection strength between the main body tube and the lumen, and at the same time support and protect the straight rod region.
(6)环电极边缘通过粘合剂平滑，避免环电极边缘与组织剐蹭，增加导管安全性。(6) The edge of the ring electrode is smoothed by the adhesive to prevent the edge of the ring electrode from rubbing against the tissue and increase the safety of the catheter.
附图说明Description of drawings
图1为环形导管与球囊导管配合使用的状态示意图；Fig. 1 is a schematic diagram of the state in which the annular catheter is used in conjunction with the balloon catheter;
图2为本发明实施例提供的一种医疗导管的结构示意图；Fig. 2 is a schematic structural diagram of a medical catheter provided by an embodiment of the present invention;
图3为本发明实施例中远端定形段的结构示意图；Fig. 3 is a schematic structural view of the distal shaping section in an embodiment of the present invention;
图4为本发明实施例中远端定形段的远端俯视图；Fig. 4 is the top view of the distal end of the distal shaping section in the embodiment of the present invention;
图5为本发明实施例中远端定形段的侧视图；Fig. 5 is a side view of the distal shaping section in an embodiment of the present invention;
图6为本发明实施例中远端定形段的剖面图；Figure 6 is a sectional view of the distal shaping section in an embodiment of the present invention;
图7为本发明实施例中直杆段和主体段的剖面图；Fig. 7 is a cross-sectional view of a straight bar section and a main body section in an embodiment of the present invention;
图8为本发明实施例中扭转器的解剖图；Figure 8 is an anatomical view of a twister in an embodiment of the present invention;
图9为本发明实施例中扭转器的剖面图；Fig. 9 is a sectional view of a twister in an embodiment of the present invention;
其中，各附图示记说明如下：Wherein, each figure sign description is as follows:
1-环电极；2-远端定形段；3-主体管；4-取直管；5-扭转器；6-插座；1- ring electrode; 2- distal shaping section; 3- main body tube; 4- straight tube; 5- twister; 6- socket;
7-限位部；8-回勾段；9-环形圈段；10-偏转段；11-内勾段；12-直杆段；7-limiting part; 8-back hook section; 9-annular ring section; 10-deflection section; 11-inner hook section; 12-straight rod section;
13-胶球；14-绝缘层；15、17-粘合剂；16-导线；13-glue ball; 14-insulation layer; 15, 17-adhesive; 16-wire;
18-保护管；19-腔管；20-定形丝；18-protective tube; 19-lumen tube; 20-setting wire;
21-上部件；22-下部件。21-upper part; 22-lower part.
具体实施方式detailed description
本发明的目的在于提供一种安全系数高的医疗导管，所述医疗导管为环形导管，可以用于肺静脉心电信号监测，可以单独使用，也可配合其他消融导管。例如，如图1所示，该环形导管(例如为环形标测导管)可以配合球囊导管(例如为球囊消融导管或其他类似结构导管)，通过球囊消融导管内腔通道，到达心脏内部，帮助球囊消融导管找到肺静脉并监测导管消融效果。本申请以肺静脉心电信号监测为例，本领域技术人员可以理解，该导管也可以用于其他部位的标测，该导管也可以适用于不同消融的能量源，比如：射频、脉冲、微波等能量，本申请对此不作限制。The purpose of the present invention is to provide a medical catheter with a high safety factor. The medical catheter is an annular catheter, which can be used for pulmonary vein ECG signal monitoring, and can be used alone or in conjunction with other ablation catheters. For example, as shown in Figure 1, the circular catheter (such as a circular mapping catheter) can cooperate with a balloon catheter (such as a balloon ablation catheter or other similar structure catheter), through the inner cavity channel of the balloon ablation catheter, to reach the inside of the heart , to help the balloon ablation catheter find the pulmonary vein and monitor the catheter ablation effect. This application takes pulmonary vein ECG signal monitoring as an example. Those skilled in the art can understand that the catheter can also be used for mapping other parts, and the catheter can also be applied to different energy sources for ablation, such as radio frequency, pulse, microwave, etc. energy, which is not limited in this application.
为使本发明的目的、优点和特征更加清楚，以下结合附图和具体实施例对本发明作详细说明。需说明的是，附图均采用非常简化的形式且未按比例绘制，仅用以方便、明晰地辅助说明本发明实施例的目的。此外，附图所展示的结构往往是实际结构的一部分。特别的，各附图需要展示的侧重点不同，有时会采用不同的比例。还应当理解的是，除非特别说明或者指出，否则说明书中的术语“第一”、“第二”、“第三”等描述仅仅用于区分说明书中的各个组件、元素、步骤等，而不是用于表示各个组件、元素、步骤之间的逻辑关系或者顺序关系等。In order to make the purpose, advantages and features of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in very simplified form and not drawn to scale, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In addition, the structures shown in the drawings are often a part of the actual structures. In particular, each drawing needs to display different emphases, and sometimes uses different scales. It should also be understood that, unless otherwise specified or pointed out, the terms “first”, “second”, “third” and other descriptions in the specification are only used to distinguish each component, element, step, etc. in the specification, rather than It is used to express the logical relationship or sequence relationship between various components, elements, and steps.
在本申请文件中，“近端”和“远端”是从使用该医疗器械的医生角度来看相对于彼此的元件或动作的相对方位、相对位置、方向，尽管“近端”和“远端”并非是限制性的，但是“近端”通常指该医疗设备在正常操作过程中靠近医生的一端，而“远端”通常是指首先进入患者体内的一端。In this application document, "proximal" and "distal" refer to the relative orientation, relative position, direction of elements or actions relative to each other from the perspective of the doctor using the medical device, although "proximal" and "distal "end" is not limiting, but "proximal" generally refers to the end of the medical device that is closest to the physician during normal operation, and "distal" generally refers to the end that first enters the patient.
请参见图2，本发明实施例提供一种医疗导管，所述医疗导管包括具有形状记忆功能的远端定形段2和设置于所述远端定形段2的多个环电极1。请参见图7，所述远端定形段2包括腔管19和穿设于所述腔管19的定形丝20。Referring to FIG. 2 , an embodiment of the present invention provides a medical catheter, which includes a shaped
此外，请继续参见图2，本实施例提供的所述医疗导管还可包括：主体管3、取直管4、扭转器5以及插座6。其中，关于所述主体管3、所述取直管4、所述扭转器5以及所述插座6的具体描述请参见下文部分。In addition, please continue to refer to FIG. 2 , the medical catheter provided in this embodiment may further include: a
请参考图3，所述定形丝20包括：回勾段8、环形圈段9和直杆段12，所述回勾段8连接于所述环形圈段9的远端，且所述回勾段8的远端朝所述环形圈段9的中心偏转，使得所述回勾段8在所述环形圈段9上的正投影(如图4中所示)位于所述环形圈段9内。所述直杆段12连接于所述环形圈段9的近端，且所述直杆段12与所述环形圈段9的中心线平行或重合。Please refer to Fig. 3, described setting
本发明实施例提供的所述医疗导管，所述远端定形段2的所述回勾段8的远端位于所述环形圈段9内，医生逆向旋转导管时(例如，使得导管头端朝着组织旋转时)，导管头端不会插入组织表面，对组织造成伤害。In the medical catheter provided by the embodiment of the present invention, the distal end of the
此外，在现有技术中，医生在操控导管的过程中，导管头端容易因受到内部组织的挤压而发生移动，从而与环形圈段9发生缠绕，使得所述腔管19上的环电极之间发生交叠，影响电信号的采集，而本实施例中，导管头端为回勾段8，所述回勾段8在所述环形圈段9上的正投影位于所述环形圈段9内，当所述回勾段8受到轻度挤压时，其远端在所述环形圈段9内移动，难以与所述环形圈段产生缠绕，故而可在一定程度上避免所述腔管19上的环电极之间发生交叠，从而避免影响电信号的采集。In addition, in the prior art, when the doctor is manipulating the catheter, the tip of the catheter is likely to move due to being squeezed by the internal tissue, thus entangled with the
本实施例中，较佳的，多个所述环电极间隔分布于所述环形圈段9的所述腔管19上，从而以进一步避免所述回勾段8和所述环形圈段9因缠绕而影响电信号的采集。In this embodiment, preferably, a plurality of the ring electrodes are spaced and distributed on the
进一步的，本实施例提供的医疗导管，所述内定形丝20还包括：过渡段，所述直杆段12通过所述过渡段与所述环形圈段9过渡连接，所述过渡段用于限定所述回勾段8的位移，使得所述腔管19上的多个所述环电极1之间无交叠。Further, in the medical catheter provided by this embodiment, the inner shaped
具体而言，导管远端可能会因导管的旋转或受到组织的挤压发生变形，而与环形圈段9发生缠绕，例如导管远端运动到环形圈段9的下方(环形圈段9的下方是指靠近所述直杆段12的一侧)，并带动环形圈段9运动时，会使得环形圈段9的远端部分与所述环形圈段9的其它部分产生交叠，从而使得腔管19上的环电极1发生交叠，影响标测或消融的准确性。本实施例提供的所述医疗导管，当所述远端定形段2在组织内，因受到挤压，所述回勾段8朝靠近所述环形圈段9的方向移动直至到达所述过渡段时，所述过渡段对所述环形圈段9进行阻挡，从而可阻止所述回勾段8进一步移动到所述环形圈段9的下方，与所述环形圈段9发生缠绕，避免因所述环形圈段9自身的不同部分产生交叠导致环电极1发生交叠而影响标测或消融的准确性。故而本实施例中，所述过渡段除了实现所述直杆段12与所述环形圈段9的过渡连接，还可进一步避免因所述回勾段8的变形而与所述环形圈段9缠绕，使得环电极之间相互交叠，从而影响标测或消融的准确性。Specifically, the distal end of the catheter may be deformed due to the rotation of the catheter or the extrusion of the tissue, and become entangled with the
更进一步的，请继续参考图3，所述过渡段包括偏转段10和内勾段11，所述直杆段12、所述偏转段10、所述内勾段11和所述环形圈段9依次过渡连接，即，所述直杆段12依次通过所述偏转段10和所述内勾段11过渡连接于所述环形圈段9的远端。所述内勾段11的近端朝靠近所述环形圈段9的中心方向偏转，且在所述环形圈段9上的正投影(如图4所示)位于所述环形圈段9内，所述回勾段8因受到组织的挤压朝所述环形圈段9运动时，所述内勾段11限定所述直杆段12的位移，使得所述腔管19上的多个所述环电极1之间无交叠。亦即，当所述回勾段8朝所述环形圈段9运动至与所述内勾段11相抵靠，或带动所述环形圈段9运动，至所述环形圈段9的远端部分与所述内勾段11相抵靠时，所述回勾段8的位置不再发生变化，从而可在一定程度上限制所述回勾段8缠绕至所述环形圈段9的下方，进而可避免因所述环形圈段9自身的不同部分产生交叠导致环电极1发生交叠而影响标测或消融的准确性。Further, please continue to refer to FIG. 3, the transition section includes a
可以理解的，所述内勾段11、所述环形圈段9和所述回勾段8依次连接，形成一螺纹结构，其中，所述环形圈段9形成相对完整的整圈螺纹，而所述内勾段11和所述回勾段8位于所述环形圈段9两侧分别形成相对不完整的螺纹，例如为整圈螺纹的1/4、1/5或1/6等，如此，便可保证所述内勾段11、所述环形圈段9和所述回勾段8之间均平滑过渡连接，使得导管具有良好的抗弯折性。It can be understood that the
较佳的，本实施例中，所述定形丝20被配置为，在自由状态下，在所述环形圈段9的正投影面上，所述直杆段12位于所述环形圈段9的不与所述回勾段8所在的象限及所述内勾段11所在的象限产生重叠的象限内。具体的，如图4所示，将所述环形圈段9的正投影面划分为四个象限：第一象限、第二象限、第三象限和第四象限，若在所述环形圈段9的正投影面上，所述回勾段8位于第三象限，所述内勾段11位于第四象限，则在所述环形圈段9穿入所述腔管19之前的自由状态下，所述直杆段12在所述环形圈段9上的正投影位于第一象限或位于第二象限，在穿设于所述腔管19后，所述直杆段12与所述环形圈段9的中心线重合，即在所述环形圈段9的正投影面上，所述直杆段12位于所述环形圈段9的中心O1。Preferably, in this embodiment, the
由于定形丝20较细，可能会导致支持力不足以抵抗所述腔管19的张力，若所述定形丝20在自由状态下，所述直杆段12与所述环形圈段9的中心线发生重合，则所述定形丝20在穿设于所述腔管19后，因受到所述回勾段8的影响，所述直杆段12不再保持与所述环形圈段9的中心线重合，即，在所述环形圈段9的正投影面上，所述直杆段12偏离所述环形圈段9的中心O1，移动至图4中所示的第三象限或第四象限内。而本实施例，将所述定形丝20配置为，在自由状态下，在所述环形圈段9的正投影面上，所述直杆段12位于所述环形圈段9的不与所述回勾段8所在的第三象限及所述内勾段11所在的第四象限产生重叠的第一象限或第二象限内，如此，便可使得在所述定形丝20穿设于所述腔管19后，因受到张力的影响，所述直杆段12朝靠近第三象限和第四象限的方向移动，使得所述直杆段12与所述环形圈段9的中心线重合。Since the
在另外一些实施例中，也可将所述定形丝20被配置为，在自由状态下，在所述环形圈段9上的正投影面上，所述直杆段12与所述环形圈段9的中心重合，或者，所述直杆段12虽位于所述环形圈段9的第一象限或第二象限，但张力的影响，使得其无法到达所述环形圈段9的中心或超过所述环形圈段9的中心到达第三象限或第四象限，或者所述直杆段12位于所述回勾段8所在的第三象限内或所述内勾段11所在的第四象限内。如此，使得所述定形丝20穿设于所述腔管19内所形成的所述远端定形段2为偏心结构，即所述直杆段12偏离所述环形圈段9的中心线，此种情况下，适用于一些特殊的肺静脉结构。In some other embodiments, the
从上述描述可知，可通过所述偏转段10的偏转使得所述直杆段12在所述环形圈段9上的正投影的位置发生改变，即，使得所述远端定形段2为中心结构或偏心结构，可满足对于不同肺静脉结构的标测。It can be seen from the above description that the position of the orthographic projection of the
本实施例中，所述腔管19可为单腔管，所述定形丝20的材料可采用形状记忆合金，所述形状记忆合金通过热处理后得到具有目标结构形态的定形丝20。较佳的，请参见图6，所述定形丝20的表面为绝缘层14，即，所述定形丝20可通过在记忆合金的表面包裹绝缘材料形成，通过所述绝缘层14可保证定形丝20与环电极1导线之间的绝缘性能。In this embodiment, the
所述定形丝20可采用如下方法进行定型处理：根据所述定形丝20的结构设计相应各段(包括所述直杆段12、所述偏转段10、所述内勾段11、所述环形圈段9及所述回勾段8)的尺寸；制作与设计结构相匹配的定形模具，并在定形丝20模具上做出与设计尺寸一致的凹槽，每一段凹槽与各段的设计尺寸一一对应；将形状记忆合金沿凹槽进行绕制，并用固定栓固定；然后经过一定时间和温度的热处理，最后急速冷却，松开固定栓即可得到成型的定形丝20。Described setting
较佳的，请继续参见图3，所述定形丝20还包括限位部7，所述限位部7设于所述定形丝20的远端，用于限定所述腔管19与所述定形丝20的相对位置，即，当所述定形丝20的一端穿过所述腔管19运动至所述限位部7到达所述腔管19远端时，所述定形丝20和所述腔管19的位置不再发生改变。此外，为进一步保证所述腔管19与所述定形丝20的连接强度，请继续参见图6，所述定形丝20的远端(即所述限位部7设置处)和所述腔管19的远端可通过粘合剂15固定连接，所述粘合剂15例如可为胶水。另外，较佳的，所述限位部7为球头，以避免所述限位部7的表面轮廓损伤组织。进一步的，所述限位部7的外周可通过粘合剂15与所述腔管19平滑过渡连接，即，可在所述定形丝20的远端形成胶球13，所述胶球13包裹所述限位部7并延伸至所述腔管19，从而可起到更好的保护组织的效果，此外，所述胶球13还可对所述腔管19的远端起到封口作用，提高本实施提供的所述医疗导管的远端的密封性。Preferably, please continue to refer to FIG. 3 , the shaped
另外，同样的，请继续参见图6，所述环电极1的边缘通过粘合剂17与所述单腔管19平滑过渡相接，以避免环电极1边缘与其他接触面剐蹭，从而增加导管安全性。In addition, similarly, please continue to refer to FIG. 6 , the edge of the
本实施例提供的所述医疗导管，所述环形圈段9可为螺纹结构，所述螺纹结构的螺纹圈数的范围为1～3圈，较佳的，为1～1.2圈，图3所示是以所述螺纹结构的螺纹圈数为1圈做出示例。In the medical catheter provided in this embodiment, the
在一具体实施方式中，所述螺纹结构的螺纹半径r1的范围可为5～15mm，较佳的，为6～12mm，螺纹间距d的范围可为0～5mm，较佳的，为0～1mm。相应的，所述回勾段8在所述环形圈段9上的正投影(圆弧ab)半径范围0～15mm，较佳的，为3～8mm，∠aO2b角度范围为0～180°，较佳的，为30-90°，O2表示回勾段8在所述环形圈段9的正投影的弧形的圆心。所述内勾段11在所述环形圈段9的正向投影面(即图4中远端俯视图)上的投影(圆弧b1c，b与b1可以重合也可以不重合)半径范围为0～15mm，较佳的，为3～12mm，一般不超过所述环形圈段9的半径，∠b1O3c角度范围0～180°，较佳的，为60～120°，O3为内勾段11在所述环形圈段9上的正投影的弧形的圆心；当所述内勾段11与所述偏转段10在所述环形圈段9上的正投影的弧形半径相等时，O3也为所述偏转段在所述环形圈段9上的正投影的弧形的圆心。所述偏转段10在所述环形圈段9的正投影(圆弧cO1)半径范围为0～15mm，较佳的，为3～12mm。∠cO3O1角度范围0～180°，较佳的，为60～120°。所述偏转段10在所述直杆段12的正向投影面(即图5中侧视图)上的投影(圆弧ce)半径范围为0～15mm，较佳的，为3～12mm，∠cO4e角度范围0-180°，较佳的，为90～150°，此时，所述偏转段10到所述直杆段12过渡比较平缓，在导管取直和推送过程中受阻力较小。所述直杆段12在所述环形圈段9的正向投影面的投影为O1点，O1点到环形圈中的距离范围为0-15mm，较佳的，为0～5mm。所述内勾段11与所述偏转段10为具有一定半径的弧形结构设计，使得所述环形圈段9和所述直杆段12之间能够平滑过渡，避免定形丝20或者导管远端的导线弯折等导致导管的使用寿命降低，更进一步地，所述内勾段11与所述偏转段10在所述环形圈段9上的正投影的弧形半径相等，进一步保证了定形丝20的弯曲平滑性。In a specific embodiment, the thread radius r1 of the thread structure may range from 5 to 15 mm, preferably 6 to 12 mm, and the thread pitch d may range from 0 to 5 mm, preferably 0 to 10 mm. 1mm. Correspondingly, the radius range of the orthographic projection (arc ab) of the
本实施例中，分布于所述环形圈段9的所述环电极1具有寻找肺静脉口、获取心内电信号和监测消融等效果。在此基础上，优选的，所述远端定形段2还包括传感器(未图示)，所述传感器套设于所述直杆段12，且通过所述腔管19与外界隔离。所述腔管19套设于所述直杆段12的部分，套设有环电极，使得至少两个环电极分设于传感器的两侧，故而当所述环电极与所述传感器配合时，可实现磁电双定位技术，结合相应三维设备可以实现三维显示功能。为了避免所述传感器的设置，使得导管的最大外径变大，较佳的，可对所述直杆段12的部分做变细处理以形成一变细段，而后将所述传感器套设于所述变细段，从而使得所述变细段在套设有腔管19后，外径不大于所述远端定形段2与所述主体管3相接处的外径。In this embodiment, the
进一步的，请继续参见图2，本实施例提供的所述医疗导管还包括主体管3，所述远端定形段2与所述主体管3相连。优选的，请参见图7，所述远端定形段2的所述腔管19的近端做扩口处理，即，所述腔管19的近端具有扩口区，所述腔管19通过所述扩口区套接于所述主体管3的远端，使得所述腔管19与所述主体管3过渡连接。Further, please continue to refer to FIG. 2 , the medical catheter provided in this embodiment further includes a
在将环电极1套设于所述腔管19后，所述环电极1的导线16依次经所述腔管19和所述主体管3穿出，与位于导管尾部的所述插座6相接，为了保证所述导线16传送信号不被干扰，本实施例中，所述医疗导管还包括保护管18，所述保护管18穿设于所述主体管3内，所述环电极的导线经所述保护管18穿出所述主体管的近端，即，所述保护管18用于保证所述主体管3内的电绝缘性能和减少信号干扰，所述保护管18可采用绝缘材料制作而成。After the
另外，所述腔管19包括用于穿设所述直杆段12的直杆区(图7中对部分直杆区进行示意)，所述扩口区设于所述直杆区的远端；较佳的，所述保护管18穿过所述扩口区延伸至所述直杆区内一预设距离，如此便可增加主体管3和所述腔管19的连接强度。进一步较佳的，所述预设距离的取值范围为2mm～10mm，在此范围内，所述保护管18不会因为延伸太长影响所述医疗导管的硬度，也不会因为太短影响所述腔管19和所述主体管3的连接强度。In addition, the
更进一步的，请继续参见图2并结合7，本实施例提供的所述医疗导管还包括：取直管4和扭转器5，所述取直管4和所述扭转器5套设在所述主体管3上，所述取直管4的近端与所述扭转器5的远端相接，所述扭转器5通过相对所述主体管3旋紧或旋松，以限定所述取直管4相对所述主体管3的移动，所述取直管4用于使所述远端定形段2从自由状态变至为控形状态。Furthermore, please continue to refer to FIG. 2 and combine it with 7. The medical catheter provided in this embodiment also includes: a straightening
具体的，请具体参见图8及图9，所述扭转器5可包括上部件21和下部件22，所述上部件21的远端与所述取直管4相接，具体的，可通过粘接或热处理的方式相接，所述上部件21的近端与所述下部件22的远端螺纹连接，所述下部件22的远端为多瓣结构，所述下部件22相对于所述上部件21旋紧时，使得所述多瓣结构与所述主体管3相抵靠，限定所述取直管4相对所述主体管的移动。Specifically, please refer to Fig. 8 and Fig. 9, the
在另外一些实施例中，所述扭转器5可包括具有开口的可开合部件和用于改变可开合部件的开口大小的旋转件，所述旋转件与所述可开合部件螺纹连接，所述可开合部件套设在所述主体管3上，所述旋转件通过相对所述主体管3移动以改变所述开口的大小，从而以限定所述取直管4相对所述主体管3的移动。即，可以理解的是，所述扭转器5的具体结构不构成对于本申请的限制。In some other embodiments, the
本发明实施例提供的所述医疗导管的使用过程如下：The use process of the medical catheter provided by the embodiment of the present invention is as follows:
将所述扭转器5旋松，并将所述取直管4沿着所述主体管3移动，而后将所述远端定形段2由自由状态变至为控形状态，使得所述远端定形段2由环状变为与取直管4的形状相匹配的直线状或近似直线状。Unscrew the
将所述医疗导管穿入鞘管，通过所述鞘管达到目标组织部位，而后撤去所述鞘管，使得所述远端定形段2恢复至自由状态，呈环状对目标组织进行标测或消融。Put the medical catheter through the sheath, pass through the sheath to reach the target tissue site, and then remove the sheath, so that the distal shaped
综上所述，本发明提供的所述医疗导管，所述医疗导管包括具有形状记忆功能的远端定形段和套设于所述远端定形段的多个环电极；所述远端定形段包括腔管和穿设于所述腔管内的定形丝；所述定形丝包括回勾段、环形圈段和直杆段，所述回勾段连接于所述环形圈段的远端，且所述回勾段的远端朝所述环形圈段的中心偏转，使得所述回勾段在所述环形圈段上的正投影位于所述环形圈段内；所述直杆段连接于所述环形圈段的近端，且所述直杆段与所述环形圈段的中心线平行或重合；多个所述环电极间隔分布于所述腔管上。本发明提供的所述医疗导管，所述远端定形段的所述回勾段的远端位于所述环形圈段内，医生逆向旋转导管时，导管头端不会插入组织表面，此外，导管在操控过程中，头端不容易与环形圈段缠绕在一起，避免因环电极之间相互交叠，影响电信号的采集。如此，通过所述远端定形段的特殊结构的设计，使得本发明提供的所述医疗导管具有安全系数高、操作方便以及适用范围广等特点。In summary, the medical catheter provided by the present invention includes a shaped distal segment with a shape memory function and a plurality of ring electrodes sleeved on the shaped distal segment; the shaped distal segment It includes a lumen and a shaped wire that passes through the lumen; the shaped wire includes a hook section, an annular loop section and a straight rod section, the hook section is connected to the distal end of the annular loop section, and the The far end of the hook segment is deflected towards the center of the annular ring segment, so that the orthographic projection of the hook segment on the annular ring segment is located in the annular ring segment; the straight rod segment is connected to the The proximal end of the annular ring segment, and the straight rod segment is parallel to or coincident with the center line of the annular ring segment; a plurality of the ring electrodes are distributed on the lumen at intervals. In the medical catheter provided by the present invention, the distal end of the hook section of the distal shaped section is located in the annular ring section. When the doctor reversely rotates the catheter, the tip of the catheter will not be inserted into the tissue surface. In addition, the catheter During the manipulation process, the head end is not easy to be entangled with the annular ring segment, so as to avoid the interference of the electrical signal collection due to the overlapping of the ring electrodes. In this way, through the design of the special structure of the distal shaped section, the medical catheter provided by the present invention has the characteristics of high safety factor, convenient operation and wide application range.
此外还应该认识到，虽然本发明已以较佳实施例披露如上，然而上述实施例并非用以限定本发明。对于任何熟悉本领域的技术人员而言，在不脱离本发明技术方案范围情况下，都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均仍属于本发明技术方案保护的范围。In addition, it should be understood that although the present invention has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or be modified into equivalent changes, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the content of the technical solution of the present invention, still belong to the scope of protection of the technical solution of the present invention.
Claims (16)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5632734A (en)* | 1995-10-10 | 1997-05-27 | Guided Medical Systems, Inc. | Catheter shape control by collapsible inner tubular member |
| US20100249568A1 (en)* | 2009-03-24 | 2010-09-30 | Stehr Richard E | Medical devices having an atraumatic distal tip segment |
| US20170065226A1 (en)* | 2015-09-08 | 2017-03-09 | Oscor Inc. | Electro-physiology mapping catheter loop having atraumatic tip section |
| CN106691579A (en)* | 2015-07-28 | 2017-05-24 | 上海微创电生理医疗科技有限公司 | Electrophysiological catheter |
| CN208785541U (en)* | 2018-04-19 | 2019-04-26 | 王清 | A guide wire for catheter placement |
| CN218528874U (en)* | 2021-06-29 | 2023-02-28 | 上海微创电生理医疗科技股份有限公司 | Medical catheter |
- 2021
- 2021-06-29CNCN202110726356.3Apatent/CN115530967A/enactivePending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5632734A (en)* | 1995-10-10 | 1997-05-27 | Guided Medical Systems, Inc. | Catheter shape control by collapsible inner tubular member |
| US20100249568A1 (en)* | 2009-03-24 | 2010-09-30 | Stehr Richard E | Medical devices having an atraumatic distal tip segment |
| CN106691579A (en)* | 2015-07-28 | 2017-05-24 | 上海微创电生理医疗科技有限公司 | Electrophysiological catheter |
| US20170065226A1 (en)* | 2015-09-08 | 2017-03-09 | Oscor Inc. | Electro-physiology mapping catheter loop having atraumatic tip section |
| CN208785541U (en)* | 2018-04-19 | 2019-04-26 | 王清 | A guide wire for catheter placement |
| CN218528874U (en)* | 2021-06-29 | 2023-02-28 | 上海微创电生理医疗科技股份有限公司 | Medical catheter |
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