CN101411645A - Radiofrequency ablation electrode with homogeneous surface temperature - Google Patents

Radiofrequency ablation electrode with homogeneous surface temperature Download PDF

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Publication number
CN101411645A
CN101411645A CN 200710047263 CN200710047263A CN101411645A CN 101411645 A CN101411645 A CN 101411645A CN 200710047263 CN200710047263 CN 200710047263 CN 200710047263 A CN200710047263 A CN 200710047263A CN 101411645 A CN101411645 A CN 101411645A
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China
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radio
gas
needle
ablation electrode
radio frequency
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CN 200710047263
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Chinese (zh)
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常兆华
戴海雄
杨鹏飞
东 柴
梅勤智
盛亮亮
苏颖颖
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上海导向医疗系统有限公司
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Priority to CN 200710047263 priority Critical patent/CN101411645A/en
Publication of CN101411645A publication Critical patent/CN101411645A/en

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Abstract

The invention provides a radio-frequency ablation electrode with uniform surface temperature, which comprises a radio-frequency needle, a control collector, a gas container, an exhaust cavity and a gas receiving vessel, wherein the surface of the radio-frequency needle is coated with an insulating layer, and a needle point is exposed; the radio-frequency needle is hollow, and a gas conveying pipe, a temperature sensor and a radio-frequency wire are arranged inside the radio-frequency needle; both ends of the temperature sensor and the radio-frequency wire are connected with the tip of the radio-frequency needle and the control collector respectively; the gas conveying pipe is connected with the gas container; and gas is filled into the gas container which has certain initial pressure. By adoption of the arrangement, uniform surface temperature of the needle point can be realized by utilization of heat exchange between the gas and the needle point, so as to prevent carbonization, thereby the radio-frequency ablation electrode can be widely applied to pathological tissues.

Description

表面温度均匀的射频消融电极 Surface temperature uniform radiofrequency ablation electrodes

技术领域 FIELD

本发明涉及一种射频消融电极,具体来说涉及一种用于肿瘤治疗的射频消融电极。 The present invention relates to a radiofrequency ablation electrode, particularly, to a radio frequency ablation electrode for cancer treatment. 利用气体与针尖进行换热,使针尖表面温度均匀,防止炭化的射频消融电极。 The needle tip with a gas for heat exchange, so that the tip surface temperature uniformity, to prevent charring of the RF ablation electrodes.

肖景技术 Xiaojing technology

射频消融巳被广泛地应用于治疗包括肝部肿瘤、乳腺瘤、前列腺瘤以及脑部肿瘤等多种疾病。 Pat radiofrequency ablation is widely used to treat a variety of diseases including liver tumors, breast tumors, prostate tumors and brain tumors. 对肿瘤进行射频消融是将射频针插入病变组织,负极板或者另一电极接触人体,应用两者之间产生的交变的高频电磁波使得肿瘤组织内的离子运动方向交替变化,离子动能转换为热能导致病变组织温度升髙,从而达到治疗目的。 Radiofrequency ablation of tumors is a radio frequency needle is inserted into the diseased tissue, alternating high frequency electromagnetic wave is generated between the negative electrode contact plate or another body, such that the application of the ion motion in alternating directions tumor tissue, ion kinetic energy is converted to heat diseased tissue temperature rise resulting in Gao, so as to achieve therapeutic purposes. 直接热消融效应与组织所达到的温度相关,而温度是由施加的能量、加热的速率以及组织的热敏感性决定的。 Direct thermal ablation effect and the temperature reached the relevant tissue, thermal sensitivity and temperature determined by the energy applied, and the rate of heating of the tissue. 一般加热温度为 The heating temperature is generally

43'C—45'C,就可导致不可逆的细胞损伤。 43'C-45'C, can lead to irreversible cell damage. 在此温度范围内酶的失活是导致组织损伤的最主要因素。 In this temperature range the enzyme inactivation is the most important factor leading to tissue damage. 当组织温度升高到60'C时,使得细胞产生不可逆损伤的时间大大縮短。 When the tissue temperature to 60'C, the time that the cells produce irreversible damage is greatly reduced. 温度升高超过60'C后,蛋白质变性,在这个温度范围内, 出现有凝结坏死区间。 After the temperature rises above 60'C, protein denaturation, in this temperature range, there is coagulation necrosis occurs interval. 当温度继续升高到100'C左右时,组织内水分沸腾气化。 When the temperature continues to rise to about 100'C, vaporized moisture in the tissue boils. 温度如果继续升高,组织则会发生炭化以及产生烟的现象。 If the temperature continues to rise, tissue charring phenomenon can occur and produce smoke. --旦炭化产生,温度会迅速升高。 - Once carbonization produce, the temperature will rise rapidly. 同时,由于出现了热阻限制现象而阻碍组织受损伤的程度,而且炭化增加了组织间隙压力,可能会导致癌细胞扩散而深入组织及血管。 At the same time, due to the emergence of resistance to limit the extent of the phenomenon and discourage damaged tissue, and tissue charring increased interstitial pressure may cause cancer cells to spread and deep tissue and blood vessels.

在实际的手术当中,由于射频针与负极板的相对位置会随着病变组织的不同以及手术操作的过程等因素的变化而变化,这就使得电流密度大的地方射频针表面温度髙,而温度高很容易使与射频针接触的组织形成炭化,导致射频消融过程的不完全,甚至会在电极取出时出现大出血等症状。 In actual operation among the relative positions of the radiofrequency electrode and the negative electrode plate will vary with factors like different processes and diseased tissue due to surgical operation, which makes a large current density where the surface temperature of the needle RF Gao, the temperature high easy to make contact with tissue charring radiofrequency electrode is formed, resulting in incomplete radiofrequency ablation procedure, bleeding and other symptoms occur even when the electrode is removed.

中国发明专利公告第CN1263431C提供一种单针水冷式射频消融电极, 手柄内的支承框紧配合插入储水框,中间的空腔形成冷却水回流池,射频消融射频针前段涂有绝缘材料涂层并刻有尺度,尖端裸露,后段插入手柄以同定在储水框上并连接射频引线,内置引水钢管及其内部的测温热电偶插在射频消融电极针内并保持同轴位置。 Chinese Patent Publication No. CN1263431C provides a single cooled radiofrequency ablation electrode, the support frame is inserted into a tight fit in the handle storage block, an intermediate cavity formed chilled water return tank, radiofrequency ablation radiofrequency electrode coated with an insulating material coating the pre-stage and engraved with the scale, the exposed tip, with the rear section fixed to the insertion handle on the reservoir and connected to the RF lead frame, and the interior of the intake penstocks built thermocouple inserted into the needle and radiofrequency ablation electrode held coaxial position. 进水软管与内置引水钢管连通,出水软管连通冷却水回流池,射频引线与热电偶引线共同组成专用连接电缆,与射频消融治疗系统的主机相连接,完成信号传输。 Water inlet hose with built-in communication steel, cooling water return outlet hose communicates pool, with the thermocouple leads radio leads together form a dedicated connection cable, is connected to the host radiofrequency ablation system, the signal transmission is completed. 冷却水从进水软管通过内置引水钢管流入消融射频针内,经热交换后回到冷却水回流池,再由出水软管流回至循环冷却水装置。 Cooling water from the water inlet hose steel flows through the built-in RF ablation needle, after heat exchange back to the cooling water return tank, a cooling water circulating means to flow back from the outlet hose.

上述发明采用溶液(如水或盐水)在针尖进行换热,但由于进水、出水管道尺寸有限,造成溶液流速较慢,流量不大,在电极针温度较高时,流阻较大,导致换热效率不高,不能使射频针温度均匀从而有效的防止炭化。 Above invention using a solution (water or saline) exchanging heat in the tip, but due to the water, the water outlet pipe size is limited, causing the flow rate of solution is slow, little flow, when the electrode needle higher temperatures, large flow resistance, resulting in change thermal efficiency is not high, uniform temperature radiofrequency electrode can not effectively prevent charring.

糊鹏 Peng paste

本发明的目的是提供一种利用气体与针尖进行换热,使针尖表面温度均匀,从而可防止炭化的射频消融电极。 Object of the present invention is to provide a needle tip with a gas for heat exchange, so that the tip surface temperature uniformity, thereby preventing charring of the RF ablation electrodes.

为实现上述目的,本发明提供一种射频消融电极,其包括射频针、控制采集器、气体容器、排气腔以及气体接收容器,所述射频针表面涂有绝缘层且针尖裸露,所述射频针为中空,内含气体输送管、温度传感器和射频导线, 所述温度传感器和射频导线的两端分别与所述射频针的尖端和所述控制采集器相连,所述气体输送管与所述气体容器相连,所述气体容器中有气体, 且具有一定初始压力。 To achieve the above object, the present invention provides an RF ablation electrode, which includes a radiofrequency electrode, to control the acquisition, a gas container, and a gas discharge chamber receiving the container, coated with the radio frequency needle tip exposed insulating layer and the radio frequency a hollow needle, containing a gas feed pipe, both ends of the temperature sensors and RF conductor, said temperature sensor leads and RF respectively with the radio frequency needle tip and the collector is connected to control said gas delivery tube and the gas container connected to said gas container with a gas, and has a certain initial pressure.

本发明的射频消融电极的进一步的特点是:所述针尖包括针尖顶部和针尖底部,所述射频针内还可含有两个或多个温度传感器,听述两个或多个温度传感器的一端与所述针尖底部相连,另一端与所述控制釆集器相连。 Further features of the present invention, the RF ablation electrodes that: said needle comprises a needle tip top and a bottom, one end of the radio may also contain two or more temperature sensors inside the needle, the sounds of two or more temperature sensors and the tip is connected to the bottom, the other end is connected to the control preclude collector. 本发明的射频消融电极的进一步的特点是:所述射频导线与所述尖端焊接。 Further features of the present invention, the RF ablation electrodes that: said tip of said welding wire and radio.

本发明的射频消融电极的进一步的特点是:所述两个或多个温度传感器为热电偶传感器或热电阻传感器。 Further features of the present invention, the RF ablation electrodes is that: the two or more temperature sensors are thermocouples or RTD sensor sensor.

本发明的射频消融电极的进一步的特点是:所述两个或多个温度传感器与所述尖端焊接或热接触。 Further features of the present invention, the RF ablation electrodes is that: the two or more temperature sensors and the tip of the welding or thermal contact.

本发明的射频消融电极的进一步的特点是:所述气体为空气或氮气。 Further features of the present invention, the RF ablation electrodes that: said gas is air or nitrogen.

本发明的射频消融电极的进一步的特点是:所述针尖由不锈钢、镍钛合金或钛制成。 Further features of the present invention, the RF ablation electrodes: said needle is made of stainless steel, nitinol, or titanium.

本发明的射频消融电极的进一步的特点是:所述射频消融电极还具有手柄,其与所述射频针末端相固定。 Further features of the present invention, the RF ablation electrode is: the RF ablation electrodes also has a handle which is fixed with the radio frequency needle tip.

本发明的射频消融电极的进一步的特点是:所述射频针与所述手柄通过固定件配合固定。 Further features of the present invention, the RF ablation electrode is: the radio frequency needle and the handle member via the fixing fitting.

本发明的射频消融电极的进一步的特点是:所述手柄由聚四氟乙烯制成。 Further features of the present invention, the RF ablation electrodes that: said handle is made of polytetrafluoroethylene.

利用本发明提供的射频消融电极,气体在控制釆集器的控制下从气体容器中流出,通过气体输送管到达针尖,当针尖区域温度过高,或针尖顶部和底部温度不均匀时,气体可以起到增强换热、使针尖温度均匀、防止针尖温度高的地方发生炭化的作用。 The present invention provides the use of radio frequency ablation electrode, gas flows controlled by the control Bian collector from the gas container through a gas feed tube to the needle tip when the tip region of high temperature, the tip or top and bottom of uneven temperature, the gas may be play to enhance heat transfer, so that the tip temperature uniformity, preventing the occurrence of local high temperature carbonization of the tip. 换热后的气体从射频针内流出,经过排放腔排放到气体接受容器中。 Gas flows from the heat exchanger after the radio frequency needle, into the gas discharged from the discharge chamber through the receiving vessel. 安装在射频针针尖的温度传感器能够实时测量射频针顶端区域的温度,温度信号可以适时地由控制釆集器采集,同时,控制采集器可以控制射频信号的发生以及气体容器中气体的排放和停止。 Mounting a radio frequency needle tip of the temperature sensor can be measured in real time the temperature of the RF needle tip region, the temperature signal can be timely acquired by the control Bian collector, at the same time, control the acquisition can control the occurrence and the gas container of the gas in the radio frequency signal emissions and stop .

本发明由于采用上述技术方案,可以使针尖表面温度均匀,以防止炭化, 从而可广泛应用于病变组织,且本发明提供的射频消融电极结构新颖而紧凑,使用安全。 The present invention adopts the above technical solution, so that the tip surface temperature uniformity, to prevent charring, so that lesions can be widely used, and the present invention provides a radio frequency ablation electrode novel and compact structure, the use of safety.

,綱为能更清楚理解本实用新型的目的、特点和优点,以下将结合附图对本发明的较佳实施例进行详细描述,其中: , To be more clearly understood outline of the present invention objects, features and advantages of the preferred embodiments in conjunction with the accompanying drawings of embodiments of the present invention will be described in detail, wherein:

图1为本发明射频消融电极一较佳实施例的剖视图。 1 radiofrequency ablation electrodes sectional view of a preferred embodiment of the present invention.

具体实施方式 Detailed ways

如图1所示,本发明一较佳实施例的射频消融电极包括射频针l、手柄8、排气腔IO、气体接收容器ll、控制采集器12、气体容器13,射频针l 为中空,表面涂有绝缘层2且针尖3裸露,针尖3包括针尖顶部14和针尖底部15,射频针1内包括气体输送管4、温度传感器5和6、射频导线7。 As shown in FIG 1, a preferred embodiment of the RF embodiment of the present invention includes a radio frequency needle ablation electrode l, the handle 8, the IO discharge chamber, a gas receiving vessel ll, 12 control the acquisition, the gas container 13, a radio frequency hollow needle l, 2 coated with the insulating layer 3 and the exposed needle, the needle tip 3 includes a top 14 and a bottom tip 15, a gas feed pipe comprising a radiofrequency electrode 4, the temperature sensor 5 and 6, the wire 7 1 RF. 手柄8通过固定件9与射频针1紧密相连。 Closely linked to the handle 81 by a fixing member 9 and the radio frequency needle. 射频针1内的气体输送管4经过手柄8与气体容器13相连;射频针1内的温度传感器5和6以及射频导线7 与控制采集器12相接。 1 radiofrequency electrode gas in the conveying pipe 4 is connected via a gas container 13 and the handle 8; a temperature sensor 5 in a radio frequency and a radio frequency needle 6 and the control wire 7 and the collector contact 12.

由图1所示,控制采集器12通过射频导线7控制射频信号的发生,对相应的组织进行消融,而针尖顶部14处的温度传感器5和针尖底部15处的温度传感器6可以反馈对组织的消融状况,当两者温度差别较大时,例如温度传感器5处的温度升高较快时,很容易造成与针尖顶部14接触的组织炭化,为了避免这种状况的发生,气体可以在控制采集器12的控制下经过气体输送管4,在针尖3处与壁面发生换热,降低针'尖顶部温度,使得针尖3 表面温度均匀,避免炭化现象的发生。 As shown in FIG. 1, the control unit 12 controls the acquisition occurs via radio frequency RF signal wire 7, of the respective tissue ablation, the temperature sensor at the top and bottom of the tip 145 at the tip of the temperature sensor 156 may be fed back to the organization ablation condition, when both the large difference in temperature, for example at the temperature sensor 5 quickly elevated, it is likely to cause tissue charring contact with the top tip 14, to avoid this situation, the gas may be collected in control under the control unit 12 through the gas delivery pipe 4, heat transfer occurs at the needle tip and the wall surface 3, lower the needle 'apex temperature, so that a uniform temperature of the tip surface 3, to avoid charring phenomena.

其中,针尖3设计成尖状封闭,便于插入病变组织。 Wherein the tapered tip 3 designed as a closed, facilitate the insertion of the diseased tissue. 后面是中空圆柱体, 其长度和直径由要消融组织的大小、要插入组织的深度以及医生采用手术的方式来决定。 Followed by a hollow cylinder, its length and diameter by the size of the tissue to be ablated, the depth and the way to be inserted into tissue surgery, physicians determined. 制做材料可用不锈钢、镍钛合金或钛等。 Making available materials such as stainless steel, nitinol, or titanium.

在射频针l内部,射频导线7与尖端相接,连接方法有很多,如焊接等其他连接方式。 L pin internal RF, RF wire contact tip 7, there are many connection methods, such as welding or the like of other connections. 当控制采集器12启动射频信号后,尖端与负极之间产生交变的髙频电磁波,这种电磁波施加在组织上使得组织发热,控制采集器i2 控制射频发生功率就可以控制组织的加热情况。 When the control unit 12 starts acquisition radio frequency signal, generating an alternating electromagnetic Gao frequency between the tip and the negative electrode, in which an electromagnetic wave is applied to the tissue such that tissue heating, controlling acquisition i2 occur RF power control can control the heated tissue. 射频针1除了尖端外大部分区域都有绝缘涂层2覆盖,阻止电流从针后部流向周围组织,因此除了针前端外,与针后部相接触的周围组织并不加热。 In addition to the radio frequency needle tip 1 has an insulating coating covers most of the area 2, prevent current from flowing from the rear of the tissue surrounding the needle, so in addition to the front end of the needle, the surrounding tissue in contact with the rear portion of the needle is not heated. 绝缘层可以改变长度,从而提供可变的消融范围。 The length of the insulating layer may be varied to provide a variable extent of the ablation.

此发明中所用的气体可为各种气体,如空气、氮气或其他气体。 As used in this invention may be a gas various gases, such as air, nitrogen or other gases. 这些气体储存在气体容器13中,气体容器具有一定的初始压力。 The gas is stored in gas container 13, a gas container having a certain initial pressure.

在针尖3内部,温度传感器5、 6可以通过焊接或其他热接触方式与尖端相接。 In the interior of the needle tip 3, the temperature sensor 5, 6 may be joined by welding or other ways in thermal contact with the tip. 它可以是热电偶、热电阻或其他形式的传感器。 It can be a thermocouple, RTD or other forms of sensor. 由它采集到的针壁的温度信号可以间接反映周围组织的温度、消融的程度。 It is collected from the temperature signal pins wall may indirectly reflect the temperature of the surrounding tissue, the degree of ablation.

需要注意的是,本发明另一较佳实施例也可仅包含温度传感器5或6中的一个,由其采集到的温度信号反馈到控制采集器12,再由控制采集器12 控制气体的排放和停止。 It should be noted that the preferred embodiment of the present invention may further comprise a temperature sensor in only 5 or 6, collected by the temperature control signal is fed to the collector 12, and then collector 12 is controlled by a control gas emissions and stop. 在本发明的再一较佳实施例中,也可包含多个温度传感器,其运作方式与本实施例的温度传感器5和6相同,在此不再赘述。 In a further preferred embodiment of the present invention embodiment, it may also include a plurality of temperature sensors, and it works the same as the present embodiment of the temperature sensor 56 embodiment, is not repeated herein.

手柄8主要起连接和固定的作用。 Mainly from the handle 8 and fixed connection action. 其形状为一中空的腔体,射频针1末端插入手柄一端在固定件9的作用下紧配合固定。 In the shape of a hollow cavity, one end of the radio frequency needle insertion handle fixed to an end of a tight fitting under the effect of fixing member 9. 另外,手柄可以供医生手持,方便手术。 Further, the handle may for doctors hand, easy operation. 其可使用聚四氟乙烯等材料。 PTFE and other materials which may be used.

需要注意的是,本发明另一较佳实施例也可不包含手柄8,而不影响本发明的整体构思和精神,具有同样的技术效果。 It should be noted that the preferred embodiment of the present invention further comprises a handle 8 may not, without affecting the overall concept and spirit of the invention, has the same technical effect.

以上已对本发明的较佳实施例进行了具体说明,但本发明并不限于所述实施例,熟悉本领域的技术人员在不违背本发明精神的前提下还可作出种种的等同的变型或替换,这些等同的变型或替换均包含在本申请权利要求所限定的范围内。 Have the above preferred embodiment of the present invention have been specifically described, but the present invention is not limited to the embodiments, those skilled in the art without departing from the spirit of the present invention may be made of various modifications or equivalent replacement such equivalent variations or substitutions are included in the present application within the scope defined by the claims.

Claims (10)

1. 一种射频消融电极,包括:射频针,其为中空的且针尖裸露;其特征在于,还包括控制采集器、气体容器、排气腔以及气体接收容器;所述射频针表面涂有绝缘层,所述射频针的中空空间内含气体输送管、温度传感器和射频导线,所述温度传感器和射频导线的两端分别与所述射频针的尖端和所述控制采集器相连,所述气体输送管与所述气体容器相连,所述气体容器中有气体,且具有一定初始压力。 1. A radio frequency ablation electrode, comprising: a radio frequency needle, which is hollow and the needle tip exposed; wherein the collector further comprising a control, the gas container, and a gas discharge chamber receiving the container; the radiofrequency electrode surface coated with an insulating layer, the radio frequency needle hollow space contains a gas feed pipe, a temperature sensor and RF conductor, and both ends of the temperature sensor wires are connected to the radio frequency of the radio frequency needle tip and the collector controls the gas delivery tube connected to said gas container, said gas container with a gas, and has a certain initial pressure.
2. 如权利要求1所述的射频消融电极,其特征在于:所述射频针内含有两个或多个温度传感器。 2. The radio-frequency ablation electrode of claim 1, wherein: said inner RF needle having two or more temperature sensors.
3. 如权利要求1所述的射频消融电极,其特征在于:所述射频导线与所述尖端焊接。 The radio of claim 1 ablation electrode, characterized in that: said tip of said welding wire and radio.
4. 如权利要求1或2所述的射频消融电极,其特征在于:所述温度传感器为热电偶传感器或热电阻传感器。 4. The radio of claim 1 or claim 2, wherein the ablation electrode, wherein: the temperature sensor is a thermocouple sensor or RTD sensor.
5. 如权利要求1或2所述的射频消融电极,其特征在于:所述温度传感器与所述尖端焊接或热接触。 5. The radio of claim 1 or claim 2, wherein the ablation electrode, wherein: the temperature sensor tip welding or thermal contact with the.
6. 如权利要求1所述的射频消融电极,其特征在于:所述气体为空气或氮气。 6. The radio frequency ablation electrode of claim 1, wherein: said gas is air or nitrogen.
7. 如权利要求1所述的射频消融电极,其特征在于:所述针尖尖端封闭, 且由不锈钢、镍钛合金或钛制成。 7. The radio frequency ablation electrode according to claim 1, characterized in that: said needle tip is closed, and is made of stainless steel, nitinol, or titanium.
8. 如权利要求1所述的射频消融电极,其特征在于:所述射频消融电极还具有手柄,其与所述射频针末端相固定。 8. The radio frequency ablation electrode of claim 1, wherein: said radio frequency ablation electrode further has a handle which is fixed with the radio frequency needle tip.
9. 如权利要求8所述的射频消融电极,其特征在于:所述射频针与所述手柄通过固定件配合固定。 The radio according to claim 8, ablation electrode, wherein: the radio frequency needle and the handle member via the fixing fitting.
10. 如权利要求8所述的射频消融电极,其特征在于:所述手柄由聚四氟乙烯制成。 10. The RF ablation electrode of claim 8, wherein: said handle is made of polytetrafluoroethylene.
CN 200710047263 2007-10-19 2007-10-19 Radiofrequency ablation electrode with homogeneous surface temperature CN101411645A (en)

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Cited By (11)

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CN102028538A (en) * 2011-01-24 2011-04-27 苗毅 Multifunctional cold circulation concentrated beam radiofrequency treatment probe
CN101919730B (en) * 2009-06-12 2012-01-25 王兴林 Ablating electrode
CN102579130A (en) * 2012-03-12 2012-07-18 北京恒福思特科技发展有限责任公司 Thermosetting needle
CN102824214A (en) * 2012-09-11 2012-12-19 邹英华 Radio frequency conduit capable of fully closing blood vessel and radio frequency instrument thereof
CN103565512A (en) * 2012-07-26 2014-02-12 乐普(北京)医疗器械股份有限公司 Radiofrequency ablation catheter for renal arteries
WO2014026470A1 (en) * 2012-08-16 2014-02-20 珠海市司迈科技有限公司 Bipolar electrode for resectoscope
CN103784193A (en) * 2014-03-05 2014-05-14 上海导向医疗系统有限公司 Cold knife used for tumour cryoablation
CN105266895A (en) * 2015-09-07 2016-01-27 倪家骧 Plasma radio frequency ablation puncture trocar composite set composite set
CN106618731A (en) * 2009-11-11 2017-05-10 赫莱拉公司 Systems, apparatuses, and methods for treating tissue and controlling stenosis
CN107753098A (en) * 2011-04-12 2018-03-06 热医学公司 Method and apparatus for controlling ablation
CN108066003A (en) * 2017-12-29 2018-05-25 浙江归创医疗器械有限公司 Ablation catheter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101919730B (en) * 2009-06-12 2012-01-25 王兴林 Ablating electrode
US10363091B2 (en) 2009-11-11 2019-07-30 Nuvaira, Inc. Systems, apparatuses, and methods for treating tissue and controlling stenosis
CN106618731A (en) * 2009-11-11 2017-05-10 赫莱拉公司 Systems, apparatuses, and methods for treating tissue and controlling stenosis
CN102028538B (en) * 2011-01-24 2012-07-11 苗毅 Multifunctional cold circulation concentrated beam radiofrequency treatment probe
CN102028538A (en) * 2011-01-24 2011-04-27 苗毅 Multifunctional cold circulation concentrated beam radiofrequency treatment probe
CN107753098A (en) * 2011-04-12 2018-03-06 热医学公司 Method and apparatus for controlling ablation
CN102579130A (en) * 2012-03-12 2012-07-18 北京恒福思特科技发展有限责任公司 Thermosetting needle
CN103565512A (en) * 2012-07-26 2014-02-12 乐普(北京)医疗器械股份有限公司 Radiofrequency ablation catheter for renal arteries
WO2014026470A1 (en) * 2012-08-16 2014-02-20 珠海市司迈科技有限公司 Bipolar electrode for resectoscope
CN102824214A (en) * 2012-09-11 2012-12-19 邹英华 Radio frequency conduit capable of fully closing blood vessel and radio frequency instrument thereof
CN103784193B (en) * 2014-03-05 2015-12-02 上海导向医疗系统有限公司 Tumor cryoablation cryoprobe
CN103784193A (en) * 2014-03-05 2014-05-14 上海导向医疗系统有限公司 Cold knife used for tumour cryoablation
CN105266895A (en) * 2015-09-07 2016-01-27 倪家骧 Plasma radio frequency ablation puncture trocar composite set composite set
CN108066003A (en) * 2017-12-29 2018-05-25 浙江归创医疗器械有限公司 Ablation catheter

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