技术领域Technical Field
本发明属于医疗脉冲电穿孔治疗技术领域，尤指一种用于调整消融位置的消融导管。The invention belongs to the technical field of medical pulse electroporation treatment, and in particular relates to an ablation catheter for adjusting an ablation position.
背景技术Background technique
在不可逆电穿孔技术应用于肿瘤的临床治疗方法中，利用电脉冲消融生物组织，是通过对靶区细胞发送电场脉冲，使细胞内外的离子运动并聚集在外膜两侧，引起跨膜电位的急剧变化，细胞发生不可逆电穿孔，打破细胞内外平衡，最终引起细胞死亡。In the clinical treatment method of tumors using irreversible electroporation technology, electric pulses are used to ablate biological tissues. This is done by sending electric field pulses to the target cells, causing ions inside and outside the cells to move and gather on both sides of the outer membrane, causing a sharp change in the transmembrane potential. The cells undergo irreversible electroporation, breaking the balance inside and outside the cells and ultimately causing cell death.
在治疗过程中，由于肿瘤尺寸大小不一致，当肿瘤尺寸大于消融电极的有效消融长度时，需要进行消融电极的移动，使消融区域全方位覆盖肿瘤组织，而当肿瘤组织小于消融电极的有效长度时，需要减小消融电极的有效长度，从而控制消融范围的减小。现有电穿孔技术中，消融电极的消融长度都是固定的，若消融电极设计过小，当肿瘤尺寸较大时，需要反复移动消融电极，当消融电极设计过大时，遇到较小尺寸的肿瘤，消融时范围较大，会超过肿瘤尺寸，对周边组织会产生影响，因此，在手术过程中，如何控制消融电极的有效消融范围是本领域技术人员急需解决的问题。During the treatment process, due to the inconsistency of tumor size, when the tumor size is larger than the effective ablation length of the ablation electrode, it is necessary to move the ablation electrode so that the ablation area covers the tumor tissue in all directions. When the tumor tissue is smaller than the effective length of the ablation electrode, it is necessary to reduce the effective length of the ablation electrode to control the reduction of the ablation range. In the existing electroporation technology, the ablation length of the ablation electrode is fixed. If the ablation electrode is designed too small, when the tumor size is large, the ablation electrode needs to be moved repeatedly. When the ablation electrode is designed too large, when encountering a smaller tumor, the ablation range is larger, which will exceed the tumor size and affect the surrounding tissues. Therefore, during the operation, how to control the effective ablation range of the ablation electrode is a problem that technicians in this field urgently need to solve.
发明内容Summary of the invention
本发明提供一种用于调整消融位置的消融导管，解决上述背景技术中当肿瘤尺寸与消融电极的消融长度不匹配时，消融电极长度过小反复移动消融电极进行手术治疗，增加手术难度，降低患者体验感，或消融电极长度过大时，对周边健康组织产生影响的问题。The present invention provides an ablation catheter for adjusting the ablation position, which solves the problem in the above-mentioned background technology that when the tumor size does not match the ablation length of the ablation electrode, the ablation electrode is too short and the ablation electrode needs to be repeatedly moved for surgical treatment, which increases the difficulty of the operation and reduces the patient experience; or when the ablation electrode is too long, it affects the surrounding healthy tissues.
为了达到上述技术目的，本发明采用如下技术方案：In order to achieve the above technical objectives, the present invention adopts the following technical solutions:
一种用于调整消融位置的消融导管，包括：An ablation catheter for adjusting an ablation position, comprising:
推送鞘管，具有贯通的第一腔道；A pushing sheath tube has a first through lumen;
消融电极，具有第一端和第二端，所述消融电极将所述推送鞘管分隔成相对独立的远部和近部；所述消融电极的第一端和所述推送鞘管的近部连接，所述消融电极的第二端与所述推送鞘管的远部连接；an ablation electrode having a first end and a second end, wherein the ablation electrode separates the push sheath into relatively independent distal and proximal portions; the first end of the ablation electrode is connected to the proximal portion of the push sheath, and the second end of the ablation electrode is connected to the distal portion of the push sheath;
绝缘套管，套设于所述推送鞘管外侧，所述绝缘套管的一端靠近所述消融电极的所述第一端或所述第二端设置，所述绝缘套管和所述推送鞘管之间能够进行相对移动，且移动方向与所述推送鞘管的轴线方向一致；An insulating sleeve, sleeved on the outside of the pushing sheath, one end of the insulating sleeve is arranged close to the first end or the second end of the ablation electrode, the insulating sleeve and the pushing sheath can move relative to each other, and the moving direction is consistent with the axial direction of the pushing sheath;
通过所述推送鞘管和所述绝缘套管之间发生相对移动，以使所述绝缘套管对所述消融电极进行绝缘包覆，从而实现所述消融电极外漏的有效消融长度的控制。The pushing sheath and the insulating sleeve move relative to each other so that the insulating sleeve insulates and covers the ablation electrode, thereby controlling the effective ablation length of the ablation electrode that is exposed outside.
在一些实施方式中，还包括设置于所述推送鞘管内的拉丝，所述拉丝位于所述第一腔道内，所述绝缘套管设置于所述推送鞘管的远部上，所述绝缘套管的一端靠近所述消融电极的第二端设置，所述消融电极具有第二腔道，所述拉丝穿过所述第二腔道与所述绝缘套管连接。In some embodiments, it also includes a drawing wire disposed in the push sheath, the drawing wire is located in the first cavity, the insulating sleeve is disposed on the distal portion of the push sheath, one end of the insulating sleeve is disposed near the second end of the ablation electrode, the ablation electrode has a second cavity, and the drawing wire passes through the second cavity and is connected to the insulating sleeve.
在一些实施方式中，所述绝缘套管设置于所述推送鞘管的近部上，所述绝缘套管包覆所述推送鞘管的近部，所述绝缘套管的一端靠近所述消融电极的第一端设置。In some embodiments, the insulating sleeve is disposed on the proximal portion of the pushing sheath, the insulating sleeve covers the proximal portion of the pushing sheath, and one end of the insulating sleeve is disposed close to the first end of the ablation electrode.
在一些实施方式中，所述绝缘套管的长度大于所述消融电极的消融长度。In some embodiments, the length of the insulating sleeve is greater than the ablation length of the ablation electrode.
在一些实施方式中，所述绝缘套管远离所述消融电极的一端设有光滑导向结构。In some embodiments, a smooth guiding structure is provided at one end of the insulating sleeve away from the ablation electrode.
在一些实施方式中，所述消融电极为网篮编织结构，所述消融电极的第一端嵌设于所述推送鞘管的近部内，所述消融电极的远端嵌设于所述推送鞘管的远部内。In some embodiments, the ablation electrode is a basket weave structure, the first end of the ablation electrode is embedded in the proximal portion of the push sheath, and the distal end of the ablation electrode is embedded in the distal portion of the push sheath.
在一些实施方式中，所述推送鞘管包括外层管和内层管，所述外层管和所述内层管之间设有预设间隙，所述消融电极设置于所述预设间隙内，所述消融电极第一端延伸至所述推送鞘管的近部远离所述消融电极的一端，所述消融电极的第二端延伸至所述推送鞘管的远部远离所述消融电极的一端。In some embodiments, the push sheath includes an outer tube and an inner tube, a preset gap is provided between the outer tube and the inner tube, the ablation electrode is arranged in the preset gap, the first end of the ablation electrode extends to the proximal end of the push sheath away from the ablation electrode, and the second end of the ablation electrode extends to the distal end of the push sheath away from the ablation electrode.
在一些实施方式中，还包括手柄，所述手柄具有握把和推杆，所述推送鞘管的一端与所述推杆连接，所述拉丝的一端与所述握把连接，所述握把和所述推杆在所述推杆的轴向方向上能够相对移动。In some embodiments, a handle is further included, wherein the handle has a grip and a push rod, one end of the push sheath is connected to the push rod, one end of the wire drawing is connected to the handle, and the grip and the push rod can move relative to each other in the axial direction of the push rod.
在一个实施例中，所述握把包括横握杆和第一导向杆，所述推杆上设有与所述第一导向杆适配的第三腔道，所述第一导向杆活动设置于所述推杆的第三腔道内。In one embodiment, the handle includes a horizontal grip rod and a first guide rod, the push rod is provided with a third cavity adapted to the first guide rod, and the first guide rod is movably disposed in the third cavity of the push rod.
在一些实施方式中，所述推杆和所述握把之间设有第一限位结构，所述第一限位结构包括设置于所述第一导向杆上的第一限位凹槽和设置于所述推杆内壁上的第一限位凸台，或设置于所述第一导向杆上的第一限位凸台和设置于所述推杆内壁上的第一限位凹槽，所述第一限位凸台卡接于所述第一限位凹槽上，以使所述握把和所述推杆之间进行轴向相对直线移动。In some embodiments, a first limiting structure is provided between the push rod and the handle, and the first limiting structure includes a first limiting groove provided on the first guide rod and a first limiting boss provided on the inner wall of the push rod, or a first limiting boss provided on the first guide rod and a first limiting groove provided on the inner wall of the push rod, and the first limiting boss is clamped on the first limiting groove to enable axial relative linear movement between the handle and the push rod.
在一些实施方式中，所述推杆上设有第一螺纹孔，所述第一螺纹孔上设有适配的锁紧螺钉，所述锁紧螺钉的一端通过所述第一螺纹孔能够抵接至所述握把。In some embodiments, the push rod is provided with a first threaded hole, the first threaded hole is provided with a matching locking screw, and one end of the locking screw can be abutted against the handle through the first threaded hole.
在一些实施方式中，所述第一导向杆上设有进给刻度，所述进给刻度大小与所述绝缘套管覆盖所述消融电极的长度一致。In some embodiments, a feeding scale is provided on the first guide rod, and a size of the feeding scale is consistent with a length of the insulating sleeve covering the ablation electrode.
在一些实施方式中，还包括用于显示消融长度的显影标记，所述显影标记包括第一标记环和第二标记环，所述第一标记环设置于推送鞘管的近部上，且所述第一标记环位于所述推送鞘管的近部的边缘，所述第二标记环设置于绝缘套管上，且所述第二标记环靠近所述绝缘套管的边缘设置。In some embodiments, it also includes a development mark for displaying the ablation length, and the development mark includes a first marking ring and a second marking ring, the first marking ring is arranged on the proximal part of the push sheath, and the first marking ring is located at the edge of the proximal part of the push sheath, and the second marking ring is arranged on the insulating sleeve, and the second marking ring is arranged close to the edge of the insulating sleeve.
在一些实施方式中，还包括与能量发生器连接的电源线，所述拉丝具有导电性能，所述拉丝的一端与所述电源线电连接，所述拉丝的另一端与所述消融电极电连接。In some embodiments, it further includes a power cord connected to the energy generator, the drawing wire has conductive properties, one end of the drawing wire is electrically connected to the power cord, and the other end of the drawing wire is electrically connected to the ablation electrode.
与现有技术相比较，本发明带来的有益效果是：Compared with the prior art, the present invention has the following beneficial effects:
本申请通过在推送鞘管的一端设置一定长度的消融电极，在推送鞘管的外侧设置一定长度的绝缘套管，通过推送鞘管和绝缘套管之间进行轴向相对移动，从而实现在手术过程中实时控制消融电极的消融长度，避免出现消融电极的消融长度与肿瘤尺寸不匹配的问题，使消融范围更为准确，避免对肿瘤周边健康组织产生影响。The present application sets an ablation electrode of a certain length at one end of the push sheath, sets an insulating sleeve of a certain length on the outside of the push sheath, and performs axial relative movement between the push sheath and the insulating sleeve, thereby achieving real-time control of the ablation length of the ablation electrode during the operation, avoiding the problem of mismatch between the ablation length of the ablation electrode and the tumor size, making the ablation range more accurate, and avoiding affecting the healthy tissue around the tumor.
本申请附加的方面和优点将在下面的描述中部分给出，这些将从下面的描述中变得明显，或通过本申请的实践了解到。Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的一种用于调整消融位置的消融导管的立体结构示意图；FIG1 is a schematic diagram of the three-dimensional structure of an ablation catheter for adjusting the ablation position of the present invention;
图2为本发明的一种用于调整消融位置的消融导管的初始位置示意图；FIG2 is a schematic diagram of an initial position of an ablation catheter for adjusting an ablation position according to the present invention;
图3为本发明的一种用于调整消融位置的消融导管的绝缘套管调整后的示意图；FIG3 is a schematic diagram of an insulating sleeve of an ablation catheter for adjusting an ablation position after adjustment according to the present invention;
图4为本发明的一种用于调整消融位置的消融导管的握把的立体结构示意图；FIG4 is a schematic diagram of the three-dimensional structure of a handle of an ablation catheter for adjusting an ablation position according to the present invention;
图5为本发明的一种用于调整消融位置的消融导管的推杆的立体结构示意图；FIG5 is a schematic diagram of the three-dimensional structure of a push rod of an ablation catheter for adjusting an ablation position according to the present invention;
图6为本发明的一种用于调整消融位置的消融导管的推杆的剖视图；FIG6 is a cross-sectional view of a push rod of an ablation catheter for adjusting an ablation position according to the present invention;
图7为本发明的一种用于调整消融位置的消融导管的绝缘套管与推送鞘管的装配结构示意图。FIG. 7 is a schematic diagram of the assembly structure of an insulating sleeve and a push sheath of an ablation catheter for adjusting the ablation position according to the present invention.
图8为图7中A处放大图；FIG8 is an enlarged view of point A in FIG7;
图9为本发明的一种用于调整消融位置的消融导管的消融电极的另一种结构形态装配示意图。FIG. 9 is a schematic diagram of another structural assembly of an ablation electrode of an ablation catheter for adjusting the ablation position according to the present invention.
具体实施方式Detailed ways
以下结合具体附图，对本申请作进一步详细说明。在本实施例的描述中，除非另有说明，术语“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示本申请必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。The present application is further described in detail below in conjunction with specific drawings. In the description of this embodiment, unless otherwise specified, the terms "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the present application must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.
如图1-3所示，为本发明提供的一种用于调整消融位置的消融导管，其主要包括推送鞘管200，绝缘套管300以及消融电极203。推送鞘管200为长条的柔性管状结构，具有第一腔道；所述消融电极203为管状的圆柱形结构，具有第一端和第二端，消融电极203嵌设于推送鞘管200上，将推送鞘管200分隔成近部201和远部202相对独立的两个部分，消融电极203的第一端与推送鞘管200的近部201连接，消融电极203的第二端与推送鞘管200的远部202连接；绝缘套管300套设于推送鞘管200的外侧，绝缘套管300的一端靠近消融电极203的第一端或者第二端的边缘设置，其中，绝缘套管300能够相对于推送鞘管200进行轴向相对移动，从而使绝缘套管300对消融电极203外漏的有效消融长度2031进行控制，以满足不同手术环境需求。例如，本实施例中，消融导管用于人体腔道肿瘤治疗，当腔道外侧或腔道内的肿瘤尺寸较大时，通过移动推送鞘管200进行逐步分解消融，当肿瘤尺寸较小时，由于消融电极203的有效消融长度2031较大且固定，远大于肿瘤尺寸，故通过绝缘套管300和推送鞘管200的相对移动，使绝缘套管300对消融电极203的有效消融长度2031进行部分的绝缘包覆，减小消融电极203的有效消融长度2031，使之与待消融的肿瘤尺寸匹配。As shown in FIG. 1-3 , an ablation catheter for adjusting the ablation position provided by the present invention mainly includes a push sheath 200 , an insulating sleeve 300 and an ablation electrode 203 . The push sheath 200 is a long flexible tubular structure having a first cavity; the ablation electrode 203 is a tubular cylindrical structure having a first end and a second end. The ablation electrode 203 is embedded in the push sheath 200 to separate the push sheath 200 into two relatively independent parts, a proximal part 201 and a distal part 202. The first end of the ablation electrode 203 is connected to the proximal part 201 of the push sheath 200, and the second end of the ablation electrode 203 is connected to the distal part 202 of the push sheath 200; the insulating sleeve 300 is sleeved on the outside of the push sheath 200, and one end of the insulating sleeve 300 is arranged near the edge of the first end or the second end of the ablation electrode 203, wherein the insulating sleeve 300 can move axially relative to the push sheath 200, so that the insulating sleeve 300 controls the effective ablation length 2031 of the ablation electrode 203 leaking out to meet the requirements of different surgical environments. For example, in this embodiment, the ablation catheter is used to treat human cavity tumors. When the size of the tumor outside the cavity or inside the cavity is large, the push sheath 200 is moved to gradually decompose and ablate it. When the size of the tumor is small, since the effective ablation length 2031 of the ablation electrode 203 is large and fixed, much larger than the tumor size, the insulating sheath 300 and the push sheath 200 are relatively moved to allow the insulating sheath 300 to partially insulate the effective ablation length 2031 of the ablation electrode 203, thereby reducing the effective ablation length 2031 of the ablation electrode 203 to match the size of the tumor to be ablated.
本申请通过绝缘套管300和推送鞘管200的相对移动，从而实现消融电极203的消融长度2031的调节，从而无需反复进行消融导管的更换或移动，使患者治疗体验更好，同时，精准控制消融电极203的消融范围，避免消融范围过大，对周边健康组织产生影响。The present application achieves adjustment of the ablation length 2031 of the ablation electrode 203 through relative movement of the insulating sleeve 300 and the push sheath 200, thereby eliminating the need to repeatedly replace or move the ablation catheter, thereby providing patients with a better treatment experience. At the same time, the ablation range of the ablation electrode 203 is accurately controlled to avoid excessive ablation range that affects surrounding healthy tissues.
在一个实施例中，绝缘套管300套设于推送鞘管200的远部202上，绝缘套管300的一端靠近消融电极203的第二端设置，在绝缘套管300上设有第三腔体303，其结构与推送鞘管200的外形适配，为控制推送鞘管200与设置于远部202上的绝缘套管300之间的相对移动，消融导管还包括拉丝301，拉丝301设置于推送鞘管200的第一腔道内，消融电极203上设置有第二腔道，拉丝301的一端穿过消融电极203的第二腔道与绝缘套管300远离消融电极203的一端进行固定连接。作为本实施例的另一种变形，绝缘套管300还可以设置在推送鞘管200的近部201上，即绝缘套管300的一端靠消融电极203的第一端设置，此时无需拉丝301进行与绝缘套管300的连接，只需控制绝缘套管300远离消融电极203的一端或推送鞘管200的近部201远离消融电极203的一端移动，使推送鞘管200与绝缘套管300之间发生相对移动即可实现消融电极203的有效消融长度2031控制。In one embodiment, the insulating sleeve 300 is sleeved on the distal portion 202 of the push sheath 200, and one end of the insulating sleeve 300 is arranged close to the second end of the ablation electrode 203. A third cavity 303 is provided on the insulating sleeve 300, and its structure is adapted to the shape of the push sheath 200. In order to control the relative movement between the push sheath 200 and the insulating sleeve 300 arranged on the distal portion 202, the ablation catheter also includes a wire drawing 301. The wire drawing 301 is arranged in the first cavity of the push sheath 200, and a second cavity is arranged on the ablation electrode 203. One end of the wire drawing 301 passes through the second cavity of the ablation electrode 203 and is fixedly connected to the end of the insulating sleeve 300 away from the ablation electrode 203. As another variation of this embodiment, the insulating sleeve 300 can also be set on the proximal portion 201 of the push sheath 200, that is, one end of the insulating sleeve 300 is set close to the first end of the ablation electrode 203. In this case, there is no need to draw the wire 301 to connect with the insulating sleeve 300. It is only necessary to control the end of the insulating sleeve 300 away from the ablation electrode 203 or the proximal portion 201 of the push sheath 200 away from the ablation electrode 203 to make relative movement between the push sheath 200 and the insulating sleeve 300 to achieve control of the effective ablation length 2031 of the ablation electrode 203.
在一个实施例中，如图7和图9所示，绝缘套管300的长度大于消融电极203的有效消融长度2031，从而能够实现消融电极203的外漏部分全方位覆盖，以便对于更小的肿瘤组织进行消融，同时，由于推送鞘管200的远部202有一定长度进行导向，故绝缘套管300需要一定长度的让位空间，从而使绝缘套管300对外漏的消融电极203覆盖到位。本实施例中，最为最佳的实施方式，绝缘套管300的第三腔道303的长度应大于或者等于消融电极203的消融长度2031和推送鞘管200的远部202长度之和。In one embodiment, as shown in FIG. 7 and FIG. 9 , the length of the insulating sleeve 300 is greater than the effective ablation length 2031 of the ablation electrode 203, so that the exposed part of the ablation electrode 203 can be fully covered, so as to ablate smaller tumor tissues. At the same time, since the distal portion 202 of the push sheath 200 has a certain length for guidance, the insulating sleeve 300 needs a certain length of clearance space, so that the insulating sleeve 300 can cover the exposed ablation electrode 203 in place. In this embodiment, the most optimal implementation method, the length of the third lumen 303 of the insulating sleeve 300 should be greater than or equal to the sum of the ablation length 2031 of the ablation electrode 203 and the length of the distal portion 202 of the push sheath 200.
进一步地，消融导管用于人体腔道内进行消融，由于人体腔道内的组织相对较为脆弱，故在绝缘套管300的远离消融电极203的一端设置光滑导向结构302。本实施例中，光滑导向结构302由锥面和弧面结构组成，能够有效避免消融导管在输送至目的地之前，消融导管在人体腔道中移动时对人体组织的损伤。可选地，光滑导向结构302可为半球面结构或倒角结构或圆角结构等。Furthermore, the ablation catheter is used for ablation in a human body cavity. Since the tissue in the human body cavity is relatively fragile, a smooth guide structure 302 is provided at the end of the insulating sleeve 300 away from the ablation electrode 203. In this embodiment, the smooth guide structure 302 is composed of a conical surface and an arc surface structure, which can effectively prevent the ablation catheter from damaging the human body tissue when the ablation catheter moves in the human body cavity before being transported to the destination. Optionally, the smooth guide structure 302 can be a hemispherical structure, a chamfered structure, or a rounded structure.
在一个实施例中，由于消融导管需要进入人体腔道，例如肠道、尿道、肺部气管等，推送鞘管200需要一定的柔韧性，以便更好的在人体腔道内进行移动，如图7所示，推送鞘管200包括外层管和内层管，其中外层管和内层管之间设有间隙，消融电极203为网篮编织结构，由多条导电的金属编织丝构成，网篮结构的消融电极203的第一端延伸至推送鞘管200的近部201远离消融电极203的一端，网篮结构的消融电极203的第二端延伸至推送鞘管200的远部202远离消融电极203的一端，网篮结构消融电极203在进行导电消融的同时，还给内层管和外层管构成的推送鞘管200起到了一定的支撑作用。可选地，网篮结构的消融电极203还可以仅仅嵌设于推送鞘管200的部分，例如，如图9所示，消融电极203的第一端嵌入近部201靠近消融电极203一侧，消融电极203的第二端嵌入远部202靠近消融电极203的一端；此时，拉丝301为导电材料构成或单独设置一根导线通过第一腔道给网篮结构的消融电极203进行能量输送。In one embodiment, since the ablation catheter needs to enter the human body cavity, such as the intestine, urethra, lung trachea, etc., the push sheath 200 needs a certain flexibility to better move in the human body cavity. As shown in Figure 7, the push sheath 200 includes an outer tube and an inner tube, wherein a gap is provided between the outer tube and the inner tube, and the ablation electrode 203 is a basket weaving structure, which is composed of a plurality of conductive metal braided wires. The first end of the ablation electrode 203 with the basket structure extends to the proximal part 201 of the push sheath 200 away from the end of the ablation electrode 203, and the second end of the ablation electrode 203 with the basket structure extends to the distal part 202 of the push sheath 200 away from the end of the ablation electrode 203. While performing conductive ablation, the ablation electrode 203 with the basket structure also plays a certain supporting role for the push sheath 200 composed of the inner tube and the outer tube. Optionally, the ablation electrode 203 with a basket structure can also be embedded only in a part of the push sheath 200. For example, as shown in Figure 9, the first end of the ablation electrode 203 is embedded in the proximal part 201 close to the side of the ablation electrode 203, and the second end of the ablation electrode 203 is embedded in the distal part 202 close to one end of the ablation electrode 203; at this time, the wire drawing 301 is made of conductive material or a separate wire is arranged to transmit energy to the ablation electrode 203 with a basket structure through the first cavity.
在一个实施例中，如图4-6所示，为实现绝缘套管300和推送鞘管200之间的相对移动，消融导管还包括手柄100，手柄100包括握把101和推杆102，握把101和推杆102能够相对移动；本实施中，推送鞘管200的一端与推杆102固定连接，推杆102一端设置第一固定孔1024，将推送鞘管200进行固定，拉丝301的一端与握把101固定连接，在握把上设置第二固定孔10121，对拉丝301进行固定。通过握把101和推杆102的相对移动，从而使推送鞘管200和绝缘套管300之间产生相对位移，实现对消融电极203的消融长度2031的控制。In one embodiment, as shown in Figs. 4-6, to achieve relative movement between the insulating sleeve 300 and the push sheath 200, the ablation catheter further includes a handle 100, which includes a grip 101 and a push rod 102, and the grip 101 and the push rod 102 can move relative to each other; in this embodiment, one end of the push sheath 200 is fixedly connected to the push rod 102, and a first fixing hole 1024 is provided at one end of the push rod 102 to fix the push sheath 200, and one end of the wire drawing 301 is fixedly connected to the grip 101, and a second fixing hole 10121 is provided on the grip to fix the wire drawing 301. Through the relative movement of the grip 101 and the push rod 102, a relative displacement is generated between the push sheath 200 and the insulating sleeve 300, thereby achieving control of the ablation length 2031 of the ablation electrode 203.
进一步地，握把101包括横握杆1011和第一导向杆1012，推杆102上设置有与第一导向杆1012外形适配的第三腔道1021，第一导向杆1012活动插接于推杆102的第三腔道1021内，本实施例中，第三腔道1021和第一导向杆1012均为圆柱形结构，以使第一导向杆1012在第三腔道1021内移动阻碍更小。可选地，也可将第三腔道1021设置在握把101上，第一导向杆1012设置在推杆102上，在握把101上设置贯穿的滑槽，设置推动按钮穿过滑槽与推杆102的第一导向杆1012连接，从而实现握把101和推杆102的轴向相对移动。Further, the grip 101 includes a horizontal grip rod 1011 and a first guide rod 1012, and the push rod 102 is provided with a third cavity 1021 adapted to the shape of the first guide rod 1012, and the first guide rod 1012 is movably inserted in the third cavity 1021 of the push rod 102. In this embodiment, the third cavity 1021 and the first guide rod 1012 are both cylindrical structures, so that the first guide rod 1012 has less obstacles when moving in the third cavity 1021. Optionally, the third cavity 1021 can also be provided on the grip 101, the first guide rod 1012 can be provided on the push rod 102, a through slide groove can be provided on the grip 101, and a push button can be provided to pass through the slide groove and connect with the first guide rod 1012 of the push rod 102, so as to realize the axial relative movement of the grip 101 and the push rod 102.
在一个实施例中，如图4所示，为了便于控制绝缘套管300在初始位置，第一导向杆1012的直径小于横握杆1011的直径，即横握杆1011相对于第一导向杆1012为台阶结构，其中，在横握杆1011上设置第一抵接面10111，当推杆102的一端抵接于第一抵接面10111时，此时，绝缘套管300的位置处于初始位置，即消融电极203的消融长度2031为最大。本实施例中，第一抵接面10111为平面，推杆102靠近第一抵接面10111一侧也为平面结构，可以理解的是，第一抵接面10111的形状结构不受限制，仅需对推杆102进行定位，使操作者便于快速了解绝缘套管300处于初始位置。In one embodiment, as shown in FIG. 4 , in order to facilitate the control of the insulating sleeve 300 in the initial position, the diameter of the first guide rod 1012 is smaller than the diameter of the horizontal grip rod 1011, that is, the horizontal grip rod 1011 is a step structure relative to the first guide rod 1012, wherein a first abutting surface 10111 is provided on the horizontal grip rod 1011, and when one end of the push rod 102 abuts against the first abutting surface 10111, at this time, the position of the insulating sleeve 300 is in the initial position, that is, the ablation length 2031 of the ablation electrode 203 is the maximum. In this embodiment, the first abutting surface 10111 is a plane, and the side of the push rod 102 close to the first abutting surface 10111 is also a plane structure. It can be understood that the shape and structure of the first abutting surface 10111 are not limited, and it is only necessary to position the push rod 102, so that the operator can quickly understand that the insulating sleeve 300 is in the initial position.
在一个实施例中，如图4和图5所示，为了避免握把101和推杆102在调节过程中转动，避免其带动推送鞘管200或拉丝301以及绝缘套管300在人体腔道内转动，在推杆102和握把101之间设置第一限位结构。本实施例中，第一限位结构包括设置于第一导向杆1012上的第一限位凹槽10122和设置于推杆102内壁上的第一限位凸台1022，其中，第一限位凹槽10122与第一限位凸台1022适配，第一限位凹槽10122和第一限位凸台1022与自身轴向方向平行设置，以使所述握把101和所述推杆102之间进行轴向相对直线移动。第一限位凹槽10122和第一限位凸台1022的长度至少大于或等于消融电极203外漏的消融长度2031，本实施例中，第一限位凹槽10122为圆弧状，第一限位凸台1022为与之适配的圆弧凸台，可选地，第一限位凹槽10122还可以是三角形，四边形等其他形状，第一限位凸台1022与之适配即可。作为本实施例的另一种变形实施方式，第三腔道1021能够为不规则形状，例如椭圆，三角形或四边形等其他外形结构，第一导向杆1012外形与之适配即可，也能避免握把101与推杆102之间的转动。可选地，作为本实施例的另一种变形方式，还可以是将第一限位凹槽10122设置于推杆102的内壁上，第一限位凸台1022设置于第一导向杆1012上，也能达到手柄100的轴向限位效果。In one embodiment, as shown in FIG. 4 and FIG. 5 , in order to prevent the handle 101 and the push rod 102 from rotating during the adjustment process and to prevent them from driving the push sheath 200 or the wire drawing 301 and the insulating sleeve 300 to rotate in the human body cavity, a first limiting structure is provided between the push rod 102 and the handle 101. In this embodiment, the first limiting structure includes a first limiting groove 10122 provided on the first guide rod 1012 and a first limiting boss 1022 provided on the inner wall of the push rod 102, wherein the first limiting groove 10122 is adapted to the first limiting boss 1022, and the first limiting groove 10122 and the first limiting boss 1022 are provided in parallel with their own axial direction, so that the handle 101 and the push rod 102 can perform axial relative linear movement. The length of the first limiting groove 10122 and the first limiting boss 1022 is at least greater than or equal to the ablation length 2031 of the ablation electrode 203. In this embodiment, the first limiting groove 10122 is in the shape of an arc, and the first limiting boss 1022 is a matching arc boss. Optionally, the first limiting groove 10122 can also be in other shapes such as a triangle or a quadrilateral, and the first limiting boss 1022 can be matched therewith. As another variant implementation of this embodiment, the third cavity 1021 can be in an irregular shape, such as an ellipse, a triangle or a quadrilateral, and the first guide rod 1012 can be matched therewith, and the rotation between the handle 101 and the push rod 102 can also be avoided. Optionally, as another variant of this embodiment, the first limiting groove 10122 can be set on the inner wall of the push rod 102, and the first limiting boss 1022 can be set on the first guide rod 1012, which can also achieve the axial limiting effect of the handle 100.
进一步地，如图1和图5所示，在推杆102的侧壁上设置有第一螺纹孔1023，在第一螺纹孔1023上设置适配的锁紧螺钉1022，锁紧螺钉1022的一端能够通过第一螺纹孔1023抵接至第一导向杆1012的外壁，通过转动锁紧螺钉1022，使锁紧螺钉1022靠近第一导向杆1012的一端贴靠或远离第一导向杆1012外壁，从而实现推杆102的位置锁定，使消融电极203的消融长度2031固定或进行消融电极203的消融长度2031调节至手术需求的尺寸。Furthermore, as shown in Figures 1 and 5, a first threaded hole 1023 is provided on the side wall of the push rod 102, and a matching locking screw 1022 is provided on the first threaded hole 1023. One end of the locking screw 1022 can be abutted against the outer wall of the first guide rod 1012 through the first threaded hole 1023. By rotating the locking screw 1022, one end of the locking screw 1022 close to the first guide rod 1012 is pressed against or away from the outer wall of the first guide rod 1012, thereby achieving position locking of the push rod 102, fixing the ablation length 2031 of the ablation electrode 203 or adjusting the ablation length 2031 of the ablation electrode 203 to the size required for the operation.
在一个实施例中，为了便于操作者知道绝缘套管300相对于消融电极203的移动长度，在第一导向杆1012上还设置进给刻度，其中，进给刻度值的大小与绝缘套管300覆盖消融电极203的长度一致。如图3所示，推杆102与第一抵接面10111之间的间距104与绝缘套管300覆盖消融电极203的长度一致。In one embodiment, in order to facilitate the operator to know the moving length of the insulating sleeve 300 relative to the ablation electrode 203, a feeding scale is further provided on the first guide rod 1012, wherein the size of the feeding scale value is consistent with the length of the insulating sleeve 300 covering the ablation electrode 203. As shown in FIG. 3 , the spacing 104 between the push rod 102 and the first abutting surface 10111 is consistent with the length of the insulating sleeve 300 covering the ablation electrode 203.
在一个实施例中，如图2和图3所示，消融导管还包括用于在CT下显示消融长度的显影标记204，显影标记包括第一标记环2041和第二标记环2042，第一标记环2041设置于靠近消融电极203一端的推送鞘管200的近部201上，第二标记环2042设置于靠近消融电极203另一端的绝缘套管300上。具体地，显影标记204为铂铱环或BASO4等材料，均能够在CT下进行显示；第一标记环2041和第二标记环2042均沿消融电极203第一端和第二端的边缘重合设置，使消融长度2031显影更精确，更利于操作者进行手术操作。In one embodiment, as shown in FIG. 2 and FIG. 3 , the ablation catheter further includes a development mark 204 for displaying the ablation length under CT, and the development mark includes a first marking ring 2041 and a second marking ring 2042. The first marking ring 2041 is arranged on the proximal portion 201 of the push sheath 200 near one end of the ablation electrode 203, and the second marking ring 2042 is arranged on the insulating sleeve 300 near the other end of the ablation electrode 203. Specifically, the development mark 204 is a platinum iridium ring or BASO4 or other materials, which can be displayed under CT; the first marking ring 2041 and the second marking ring 2042 are arranged to overlap along the edges of the first end and the second end of the ablation electrode 203, so that the ablation length 2031 is more accurately developed, which is more conducive to the operator to perform the surgical operation.
在一个实施例中，如图1所示，消融导管还包括电源线103，电源线103的一端与能量发生器连接，电源线103的另一端与拉丝301连接，拉丝301与消融电极203之间设置第一导线进行连接，从而实现能量传输，本实施例中，拉丝301为导电材质构成。可选地，电源线103还可以直接与消融电极203连接，具体为通过第一腔道与消融电极203连接或直接与延伸至推送鞘管200的近部201的消融电极203的第一端连接，此时，消融电极203的第一端延伸至推送鞘管200的两端。In one embodiment, as shown in FIG1 , the ablation catheter further includes a power cord 103, one end of the power cord 103 is connected to the energy generator, the other end of the power cord 103 is connected to the wire drawing 301, and a first conductor is provided between the wire drawing 301 and the ablation electrode 203 for connection, so as to realize energy transmission. In this embodiment, the wire drawing 301 is made of a conductive material. Optionally, the power cord 103 can also be directly connected to the ablation electrode 203, specifically connected to the ablation electrode 203 through the first lumen or directly connected to the first end of the ablation electrode 203 extending to the proximal portion 201 of the push sheath 200. At this time, the first end of the ablation electrode 203 extends to both ends of the push sheath 200.
进一步地，参考图8，由于拉线301与消融电极203之间会发生相对移动，当电源线103通过拉线301与消融电极203连通时，在消融电极203附近的拉线301上设置第一导3011线将拉线301与消融电极203实现电连接，且第一导线3011设置预设长度，从而在进行绝缘套管300调节时，满足拉线301与消融电极203之间的相对移动，第一导线3011不会出现紧绷或拉断的情况。Further, referring to Figure 8, due to the relative movement between the pull wire 301 and the ablation electrode 203, when the power line 103 is connected to the ablation electrode 203 through the pull wire 301, a first conductor 3011 is set on the pull wire 301 near the ablation electrode 203 to electrically connect the pull wire 301 and the ablation electrode 203, and the first conductor 3011 is set with a preset length, so that when the insulating sleeve 300 is adjusted, the relative movement between the pull wire 301 and the ablation electrode 203 is satisfied, and the first conductor 3011 will not be tightened or broken.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰。这些改进和润饰也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention. It should be noted that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410646117.0ACN118415745B (en) | 2024-05-23 | 2024-05-23 | Ablation catheter for adjusting ablation position |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410646117.0ACN118415745B (en) | 2024-05-23 | 2024-05-23 | Ablation catheter for adjusting ablation position |
| Publication Number | Publication Date |
|---|---|
| CN118415745Atrue CN118415745A (en) | 2024-08-02 |
| CN118415745B CN118415745B (en) | 2025-01-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410646117.0AActiveCN118415745B (en) | 2024-05-23 | 2024-05-23 | Ablation catheter for adjusting ablation position |
| Country | Link |
|---|---|
| CN (1) | CN118415745B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120168092A (en)* | 2025-05-23 | 2025-06-20 | 上海澍能医疗科技有限公司 | A monopolar adjustable ablation device and an operating method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238389B1 (en)* | 1997-09-30 | 2001-05-29 | Boston Scientific Corporation | Deflectable interstitial ablation device |
| US20110118735A1 (en)* | 2003-01-21 | 2011-05-19 | Baylis Medical Company | Electrosurgical device for creating a channel through a region of tissue and methods of use thereof |
| US20130090647A1 (en)* | 2011-10-11 | 2013-04-11 | Boston Scientific Scimed, Inc. | Ablation catheter with insulated tip |
| CN109833089A (en)* | 2017-11-28 | 2019-06-04 | 杭州诺诚医疗器械有限公司 | Suitable for treating the ablation needle assemblies and ablation system of hypertrophic cardiomyopathy |
| CN112603527A (en)* | 2020-12-17 | 2021-04-06 | 凯卓科技（北京）有限公司 | Radio frequency plasma ablation operation electrode |
| CN113331941A (en)* | 2021-07-01 | 2021-09-03 | 上海捍宇医疗科技股份有限公司 | Bipolar adjustable punctiform ablation catheter and equipment thereof |
| CN214180570U (en)* | 2020-11-16 | 2021-09-14 | 南京维京九洲医疗器械研发中心 | Microwave ablation needle for cystic tumors |
| CN115089291A (en)* | 2022-07-12 | 2022-09-23 | 杭州维纳安可医疗科技有限责任公司 | Radiofrequency ablation electrode needle, ablation system and method of using the radiofrequency ablation electrode needle |
| CN219271093U (en)* | 2022-08-15 | 2023-06-30 | 杭州睿笛生物科技有限公司 | Push type ablation electrode needle |
| WO2023161492A1 (en)* | 2022-02-28 | 2023-08-31 | Mirai Medical Ltd | An electroporation device |
| CN220275696U (en)* | 2023-02-21 | 2024-01-02 | 南微医学科技股份有限公司 | High-frequency treatment instrument |
| CN117503327A (en)* | 2023-11-30 | 2024-02-06 | 迈得诺医疗科技集团有限公司 | Pulse tumor ablation needle and ablation system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238389B1 (en)* | 1997-09-30 | 2001-05-29 | Boston Scientific Corporation | Deflectable interstitial ablation device |
| US20110118735A1 (en)* | 2003-01-21 | 2011-05-19 | Baylis Medical Company | Electrosurgical device for creating a channel through a region of tissue and methods of use thereof |
| US20130090647A1 (en)* | 2011-10-11 | 2013-04-11 | Boston Scientific Scimed, Inc. | Ablation catheter with insulated tip |
| CN109833089A (en)* | 2017-11-28 | 2019-06-04 | 杭州诺诚医疗器械有限公司 | Suitable for treating the ablation needle assemblies and ablation system of hypertrophic cardiomyopathy |
| CN214180570U (en)* | 2020-11-16 | 2021-09-14 | 南京维京九洲医疗器械研发中心 | Microwave ablation needle for cystic tumors |
| CN112603527A (en)* | 2020-12-17 | 2021-04-06 | 凯卓科技（北京）有限公司 | Radio frequency plasma ablation operation electrode |
| CN113331941A (en)* | 2021-07-01 | 2021-09-03 | 上海捍宇医疗科技股份有限公司 | Bipolar adjustable punctiform ablation catheter and equipment thereof |
| WO2023161492A1 (en)* | 2022-02-28 | 2023-08-31 | Mirai Medical Ltd | An electroporation device |
| CN115089291A (en)* | 2022-07-12 | 2022-09-23 | 杭州维纳安可医疗科技有限责任公司 | Radiofrequency ablation electrode needle, ablation system and method of using the radiofrequency ablation electrode needle |
| CN219271093U (en)* | 2022-08-15 | 2023-06-30 | 杭州睿笛生物科技有限公司 | Push type ablation electrode needle |
| CN220275696U (en)* | 2023-02-21 | 2024-01-02 | 南微医学科技股份有限公司 | High-frequency treatment instrument |
| CN117503327A (en)* | 2023-11-30 | 2024-02-06 | 迈得诺医疗科技集团有限公司 | Pulse tumor ablation needle and ablation system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120168092A (en)* | 2025-05-23 | 2025-06-20 | 上海澍能医疗科技有限公司 | A monopolar adjustable ablation device and an operating method |
| Publication number | Publication date |
|---|---|
| CN118415745B (en) | 2025-01-21 |
| Publication | Publication Date | Title |
|---|---|---|
| US20110112527A1 (en) | Flexible medical ablation device and method of use | |
| JP2925036B2 (en) | Telescopic telescopic bipolar electrode for non-invasive therapy | |
| EP1974683B1 (en) | Ablation therapeutic device | |
| WO2011089935A2 (en) | Treatment tool | |
| RU2674887C2 (en) | Catheter with cooling on nonablating element | |
| US10058680B2 (en) | Steerable stylet | |
| CN113164202B (en) | Electrosurgical instrument | |
| JP4716939B2 (en) | Endoscopic treatment tool | |
| JP2023100819A (en) | electrosurgical cautery instrument | |
| JP2025503056A (en) | Ablation Catheters | |
| CN118415745A (en) | Ablation catheter for adjusting ablation position | |
| JPS61203979A (en) | Method and electrode for fixing electrode to bone tissue | |
| KR200478381Y1 (en) | Disposable electrosurgical handpiece for treatingtissue | |
| US20250090221A1 (en) | Apparatus and methods for tumor ablation | |
| CN112294429B (en) | Electric knife | |
| JP2007282847A (en) | Flexible bipolar forceps | |
| CN116439819B (en) | Ablation assembly, ablation assembly for pancreatic tissue, and ablation system | |
| CN222804338U (en) | Ablation catheter for adjusting ablation position | |
| JP2020163001A (en) | Microwave irradiation equipment for endoscopes | |
| JPH0568685A (en) | High-frequency incising means for endoscope | |
| CN214128765U (en) | Electrotome and electrotome system for treating bullae | |
| JP5312868B2 (en) | Endoscopic treatment tool | |
| CN211934275U (en) | Double-electrode electrotome device | |
| JP6628553B2 (en) | High frequency treatment tool for endoscope | |
| CN119606513B (en) | Vertebral nerve ablation device |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |