CN100434047C - Focal prostate cancer conformal radiofrequency ablation electrode - Google Patents

Focal prostate cancer conformal radiofrequency ablation electrode Download PDF

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CN100434047C
CN100434047C CN 200710036555 CN200710036555A CN100434047C CN 100434047 C CN100434047 C CN 100434047C CN 200710036555 CN200710036555 CN 200710036555 CN 200710036555 A CN200710036555 A CN 200710036555A CN 100434047 C CN100434047 C CN 100434047C
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prostate cancer
sub
needle
catheter
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CN101006939A (en
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张步林
罗昌渠
兵 胡
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上海交通大学
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Abstract

一种医疗器械技术领域的局灶性前列腺癌适形射频消融电极,由导管与外套组成,导管在外套管内活动,相互紧密配合,导管为一空芯管,导管一端固定有多根微细空芯子针,子针组成具有记忆功能的扇形束,子针缩入外套内,伸出时恢复成扇形束,导管与套管的尾端装入手柄。 A medical instrument localized prostate cancer BACKGROUND conformal RF ablation electrode, a conduit jacket composed of an outer catheter cannula activities closely with each other, the hollow core tube is a conduit, the conduit having one end fixed multiple pieces of fine empty core needles, sub-needles composed of a fan beam having a memory function, the sub-needle retracted into the outer sleeve, restored to the extended fan-beam, the trailing end of the catheter and cannula load lever. 本发明由于多根子针构成的扇形束与前列腺左右侧叶的形态相似,射频加热过程的温度场既能有效治疗前列腺癌,又能保护尿道、直肠及前列腺神经血管束等结构免受损伤,达到安全而有效地治疗前列腺癌。 Since the present invention is a fan-beam configuration of the multi-pin root morphologically similar prostate left lateral lobe, the temperature can effectively treating prostate cancer field RF heating process, while protecting structure urethra, rectum and prostate neurovascular bundles and the like from damage, to safe and effective treatment of prostate cancer.

Description

局灶性前列腺癌适形射频消融电极 Conformal localized prostate cancer radiofrequency ablation electrodes

技术领域 FIELD

本发明涉及的是一种医疗器械技术领域的电极,特别是一种局灶性前列腺癌适形射频消融电极。 The present invention relates to an electrode in the technical field of medical devices, in particular a localized prostate cancer conformal radiofrequency ablation electrode. 背景技术 Background technique

前列腺癌是老年男牲常见的癌症之一,已严重危及到人类的健康。 Prostate cancer is one of common cancer in elderly men and sacrifice, have seriously endanger human health. 现有技术中,前列臁癌治疗有手术根治术、内分泌治疗、放射治疗及微创治疗等。 The prior art, the forefront of cancer treatment Ecthyma radical mastectomy surgery, endocrine therapy, radiation therapy and minimally invasive treatment. 肿瘤射频消皺术作为微创手段,己在肝、肾等实体性肿瘤治疗取得很好的效果,其疗效得到临床认可,并己试用于前列腺癌治疗,已取得初步疗效。 RF wrinkle elimination of tumor surgery as a minimally invasive means, has been made in the treatment of solid tumors in liver, kidney and other good results, its clinical efficacy been recognized and has been tested in the treatment of prostate cancer, has achieved initial results. 而由于前列腺呈前后稍扁的栗子形,底部宽大,尖部尖细,腺实质前部有尿道通过,后方借直肠膀胱隔与直肠壶腹相邻。 As the prostate was slightly while the front and rear of the chestnut-shaped and flat, wide bottom portion, a tapered tip portion, the front portion has a substantial gland through the urethra, adjacent to the rear compartment by the bladder and rectum rectal ampulla. 而且前列腺癌好发于周缘区,且呈多灶性和多形性特点, 不可能对痛灶实施耙向射频消融治疗,而需要对整个周缘区腺体和大部分移形区腺体进行系统性消融。 And prostate cancer occurs in the periphery region, and showed multifocal and polymorphous characteristics, possible embodiments of the rake to radiofrequency ablation lesion pain, the need for the entire system, and most of the periphery of transitional zone glands glands area ablative. 但是,现有的肿瘤射频消融电极(如国外RITA、 RTC及国内为尔福公司生产的电极)都没有根据器官形态而设计专用电极,电极有多种, 如单极、双极或集束电极,所形成的消融灶多呈球形或椭球形。 However, the existing radiofrequency tumor ablation electrode (such as foreign RITA, RTC and domestic Malfoy is produced by the electrode) are not designed according to the organ-specific electrode patterns, a variety of electrodes, such as monopolar, bipolar or cluster electrode, lesion formed mostly spherical or elliptical.

经对现有技术的检索发现,中国发明专利公开号为:CN1554314A,申请号200310122792.1,该专利公开了一种单针水冷式射频消融电极,其消融灶呈椭球形。 Retrieved prior art found, Chinese Patent Publication No.: CN1554314A, Application No. 200310122792.1, which discloses a single-cooled radiofrequency ablation electrode ellipsoidal lesion. 检索中还发现,中国发明专利公开号为CN2722849Y,申请号200420006962. X, 该专利公开的射频消融切缘电极的消融灶呈扁球形。 Retrieval also found, Chinese Patent Publication No. CN2722849Y, Application No. 200420006962. X, which discloses radiofrequency ablation lesion margin oblate spherical electrodes. 这两种电极均存在以上所述的不足,不适合用于局限性前列腺癌射频消融治疗。 Both electrodes are less than the presence of localized prostate cancer are not suitable for radiofrequency ablation.

发明内容 SUMMARY

本发明的目的在于克服现有技术中的不足,提供一种局灶性前列腺塌适形射频消敏电极,使其实施"适形"消融,根据前列腺周缘区特殊形态及其表面的弧度(15〜3(T )而将电极针设计成由多根子针组成的扇形束,在该扇形束的側面观上,子针与导管具有15〜30弧度的适形曲度。本发明实现了适合局限性前列腺癌的适形射频消融,使其基于前列腺的解剖特点,具有保护前列腺部尿道、直肠和前列腺血管神经束等结构在有效温度场之外,免受热损伤。 Object of the present invention is to overcome the disadvantages of the prior art, there is provided a localized prostate collapse conformal RF cancellation sensing electrode, so the implementation of "conformal" ablation, according to the special form and curvature of the peripheral edge surface of the prostate region (15 ~3 (T) and the electrode pins are designed to fan beam composed of a plurality root pin, in side view of the fan beam, and the sub-needle catheter having 15~30 curvature conformal curvature. limitations of the present invention to achieve a suitable prostate cancer conformal radiofrequency ablation, so based on anatomical characteristics of the prostate, having a protective structure prostatic urethra, rectum and prostate neurovascular bundles and the like outside an effective temperature field, from thermal damage.

本发明是通过以下技术方案实现的,本发明由导管与外套组成,导管在外套管内活动,相互紧密配合,导管一端固定有多根微细空芯子针,子针组成具有记忆功能的扇形束。 The present invention is achieved by the following technical solutions, the present invention is composed by the catheter and the outer catheter outer cannula activities closely with each other, one end fixed to the catheter empty core plurality pieces of fine needles, sub-needles composed of a fan beam having a memory function. 子针縮入外套内,伸出时恢复成扇形束,而每根子针在伸出过程中保持极强的穿透力,在此扇形束的侧面观上,子针与导管具有15〜30弧度 The sub-needle retracted into the outer sleeve, restored to the extended fan beam, and each root needle holder extending in the strong penetration process, in the side view of this fan beam, and the sub-needle catheter having 15~30 radians

的适形曲度,导管与套管的尾端装入手柄。 Conformal curvature, the trailing end of the catheter and cannula load lever.

所述的导管为一空芯管,导管前端设有3〜7根微细空芯子针,完全展开时 Said conduit is a hollow core tube, the distal end of the catheter with the empty core 3~7 pieces of fine needles, fully expanded

针尖之间的距离0.8cm。 0.8cm distance between the tip.

所述的子针一端均插入导管端口内并焊固,但每根子针内腔均与导管内腔相通。 One end of each of the sub-needle catheter is inserted into and welded fixed port, but each root are in communication with the needle lumen catheter lumen. 子针的自由端端口内均可设有热电偶,也可按照具体需求仅在特殊位置的子针的自由端端口内设有热电偶,以检测消融区的温度,此热电偶的补偿线从导管内腔引至手柄从尾端口引出。 The free end of the needle can be provided with the sub-port thermocouple, a thermocouple may be only at the free end of the sub-needle port features according to the specific needs of a particular location to detect the temperature of the ablation zone, from this thermocouple compensation line port catheter lumen lead drawn from the tail to the handle.

本发明电极的导管留有空腔以灌注生理盐水及化疗药液等,多根子针组成一扇形束,该扇形束收入外套管内,当伸出外套管就能恢复原形扇形束。 An electrode catheter of the invention leaving a cavity to chemotherapy infusion of saline and other liquid, the composition of a multi-needle root fan beam, the fan beam revenue within the outer sleeve, the outer sleeve can be restored when the original shape projecting a fan beam. 当导管向外推时,每根子针均有强而有力的穿透力,并恢复原有的扇形束。 When pushed out of the catheter, each pin has a strong root penetration, and retain the original fan beam.

所述外套管与子针配合的一端设计成30°的斜口,外套管外表面具有标有0. 5cm刻度的绝缘层。 The mating end of the outer sleeve and the sub-bevel needle designed to 30 °, the outer surface of the outer tube has a scale marked with 0. 5cm insulating layer.

所述导管与外套管的另一端装入手柄,手柄上有定位、导向和注射接口。 The other end of the conduit and the jacket pipe load lever, a positioning guide and the injection port on the handle. 手柄尾端安置有与射频消融仪相连接的接口。 The trailing end of the handle is disposed with an interface to the RF ablation device is connected. 在外套管手柄的前端有一注射接口,通过此接口可在与导管相通的子针的自由端端口注射药液。 Front end of the outer sleeve of the handle has an injection port, the port through which injection liquid interface at the free end of the conduit in communication with a sub-needle.

与现有技术相比,本发明由于多根子针构成的扇形束与前列腺左右侧叶的形态相似,射频加热过程的温度场即能有效治疗前列腺癌,又能保护尿道、直肠及前列腺神经血管束等结构免受损伤,达到安全而有效地治疗前列腺癌。 Compared with the prior art, the present invention, since the fan beam configuration of the multi-needle root morphologically similar prostate left lateral lobe, the temperature of the heating process, i.e., the RF field effective to treat prostate cancer, but also protect the urethra, rectum and prostate neurovascular bundles and other structures from damage, to safely and effectively treat prostate cancer.

附图说明 BRIEF DESCRIPTION

图1是本发明前列腺适形射频消融可控专用电极的正视图。 FIG 1 of the present invention is a conformal prostate radiofrequency ablation electrode front controllable dedicated FIG. 图2是本发明前列腺适形射频消融可控专用电极的纵剖面图。 FIG 2 is a prostate present invention conformable dedicated electrode radiofrequency ablation controllable longitudinal sectional view. 闺3是本发明前列腺适形射频消融可控专用电极扇形束的局部侧视图。 3 is a partial side view of the prostate Gui present invention conformable dedicated electrode radiofrequency ablation controllable fan beam. 上述圉中:l外套管,2外套管绝缘漆,3外套管刻度标记,4手柄,5导管, In the above-described yuzhen: l overtube, the overtube 2 insulating paint, scale marks overtube 3, a handle 4, 5 of the catheter,

6子针扇形束,7热电偶补偿导线,8射频引入线,9电极束与导管焊接处,10 Sub-pin fan beam 6, 7 thermocouple wire, RF inlet 8, 9 and the beam duct welding electrode, 10

热电偶,ll斜口, 12注射液体装置,13密封圏,14定位鞘,15适形曲度。 Thermocouple, ll bevel, the liquid injection apparatus 12, the sealing rings of 13, the sheath 14 is positioned, conformal curvature 15.

具体实施方式 Detailed ways

下面结合附图对本发明的实施例作详细说明:本实施例在以本发明技术方案为前提下进行实施,给出了详细的实施方式,但本发明的保护范围不限于下述的实施例。 DRAWINGS Embodiments of the present invention will be described in detail: In the present embodiments of the present invention is a technical premise, detailed embodiments given, but the scope of the present invention is not limited to the following examples.

本实雄併的结构如衝1、 2、 3所示,包括外套管1、导管5、子针6、手柄4, 热电傅IO、射频线和热电偶的补偿导线7、定位鞘14和注射口12。 This solid structures such as male and punch 1, 2, 3, comprises an outer tube 1, the duct 5, the sub-needle 6, the handle 4, the IO thermoelectric Fu, RF cable and thermocouple compensating conductor 7, the positioning of the sheath 14 and the injection port 12. 本实施例外套管1作穿剌、定位和导向用。 1 of the present embodiment as exceptions puncture cannula, and the positioning guide available. 导管5在外套管1内,相互之间配合为紧密活动配合。 5 of the outer catheter sleeve 1, with the active in close fit with each other. 即导管5可松动地在外套管定向下前后伸縮。 I.e. conduit 5 may be loosely telescoping the outer sleeve longitudinal orientation. 导管5为一空芯管,导管5 一端安置3〜7根细微空芯子针6,由具有记忆性能的材料制成,子针6的外径为0.4nim,各子针6在完全展开时针尖间距为0.8cm,可根据不同部位对展开的大小进行调竹,子针6 —端均插入导管一端内,相互焊接紧固,而每根子针6 内腔均与导管内腔相通,子针自由端口可安置热电偶io或空芯可注生理盐水或化疗药液。 5 is a hollow core conduit tube, one end of the conduit 5 is disposed 3~7 root empty core fine needle 6, made of a material having memory properties, the outer diameter of the sub-needle 6 is 0.4nim, each sub-tip needle 6 when fully deployed spacing of 0.8cm, bamboo can be adjusted according to the size of the different parts of the deployment, the sub-needle 6 - terminal end of the conduit are inserted into, welded to each other fastening root pins 6 and each lumen are in communication with the catheter lumen, the needle sub-free io ports disposed thermocouples or hollow core can be filled with saline or a chemotherapeutic drug solution. 多根子针相互组成一定形态的扇形束,在此扇形束的侧面观上,子针与导管具有15〜30弧度的适形曲度(图3),当导管5收入外套管1时,此扇形束随着变形缩入外套管l内,当导管5推出时,子针束恢复扇形束原形。 Multi-needle root another fan beam composed of a certain form, in side view this fan beam, and the sub-needle catheter having 15~30 curvature conformal curvature (FIG. 3), when the catheter 5 income outer sleeve 1, this sector as the beam deformation retracted into the outer sleeve L, when the catheter is Release 5, the sub-needle beam recovery prototype fan beam. 另外, 外套管一端为斜口ll作穿刺用,外套管1的外表面包绕带刻度的绝缘层。 Further, one end of the outer sleeve is beveled ll for the puncture, the outer surface of the outer sleeve 1 is wrapped around the insulating layer with a scale. 导管5与外套管1的尾端均装入有定位、导向的手柄4中,射频线和热电偶的补偿导线7从手柄尾端引出与射频消融仪相连,手柄前端装有可与注射器连接的注射接O。 The trailing end of the outer sleeve and the catheter 5 are charged 1 positioning, the guide wire compensation handle 4, RF cable and thermocouple lead 7 is connected to the RF ablation device from the rear end of the handle, the handle may be connected with the front end of the syringe injection joining O.

本发明的前列腺癌适形射频消融电极的外套管1采用外径为16G的直形针状结构,可在经直肠超声的实时引导下清晰显示,以确保外套管1准确从前列腺尖部插入至所治疗靶区,从而避免对前列腺部尿道、膜部尿道、前列腺血管神经束、SM及膀胱等部位造成损伤。 Prostate cancer of the present invention conform radiofrequency ablation electrode 1 using an outer diameter of the outer sleeve straight 16G needle-like structures can be clearly displayed in real time transrectal ultrasound guidance to ensure an accurate outer sleeve portion inserted into the apex of the prostate the treatment target, thereby avoiding prostatic urethra, membranous urethra, prostate neurovascular bundle portion, SM and bladder damage. 外套管1除斜口11端0. 5cm处裸露外均包有绝缘层2,,层2标有0. 5cm的刻度,外套管1的绝缘层2避免在射频工作时外套管产热而对厨围正常组织造成热损伤。 In addition to the outer sleeve 1 at 0. 5cm beveled outer ends 11 are exposed insulating layer 2 packet with a layer 2 ,, a graduated 0. 5cm, the outer sleeve of the insulating layer 1 to avoid the outer sleeve 2 when the heat generation of the RF work kitchen Wai thermal damage to normal tissue. 当外套管1穿刺到目标时,通过手柄4的定位鞘14向前推动导管5,从而将子针6沿着前列腺一侧叶展开,这样裸露的子针束6就构成了射频场,展开的子针束6侧面具有15〜30°的适形曲度15, 此适形曲度15可根据不同大小的前列腺周缘区的弧度进行设置,子针束6的长度可根据治疗区域的大小和形状进行调节。 When the outer sleeve 1 to puncture target, the handle 14 is pushed forward by the positioning of the sheath 5 of the catheter 4, so that the sub-needle 6 along the side lobe of the prostate to expand, so that the exposed needle sub-beam 6 constitutes a radio frequency field, expanded conformal curvature sub-needle beam 6 having a side surface 15 of 15~30 °, the conformal curvature 15 can be set according to the curvature of the prostate periphery regions of different sizes, the needle length of the sub beams 6 may be size and shape of the treatment area adjusted. 射频引入线8从手柄4的尾部引出, 通过插头与射频消融治疗系统的主机相连接。 RF inlet 8 leads from the end of the handle 4, connected by plug and radiofrequency ablation system of the host.

子针6的自由端端口内设有热电偶10,以检测消融区的温度,此热电偶的补偿线从导管内腔引至手柄从尾端口引出与主机相连,完成信号的传输,通过主机对治疗靶区进行温度控制,避免治疗区域温度过高及加热不足,实现温度反馈精确治疗。 Free end of the port sub-needle 6 is equipped with a thermocouple 10 to detect the temperature of the ablation zone, the thermocouple compensation line leading from the catheter lumen to the handle from a port connected to the host end of the lead to complete a transmission signal, through a host of treatment of target temperature control to avoid overheating and is less than the treatment area is heated, a temperature feedback to achieve precise treatment. 在治疗过程中可通过注射液体装置12对治疗靶区进行生理盐水或者药物的注射,生理盐水或者药物通过与导管5内腔相连的子针6进入靶区。 During treatment injectable liquid target device 12 for treatment of drug or saline, physiological saline or the drug into the target region through the sub-needle 5 with the catheter lumen 6 is connected through. 通过注射生理盐水冷却子针6的温度,防止组织炭化进而扩大消融灶的范围,也可直接注射化疗药物至靶区。 Sub-cooling the temperature saline needle 6, to prevent tissue charring and further expand the scope of lesions can also be injected directly to target chemotherapeutic drugs.

在本发明的实施例中,为确保前列腺癌适形射频消融电极的优良性能,对电极各部分的选材作了优化选择,同时其生物相容性符合GB/T16886. 1 — 2001 的规定,所选选林价格低廉。 In an embodiment of the present invention, the prostate cancer to ensure good performance conformal RF ablation electrodes, each selection for optimized selection portion of the electrode, while the biocompatibility meet GB / T16886 1 -. 2001 provisions, the Lin inexpensive option selected.

Claims (7)

1、一种局灶性前列腺癌适形射频消融电极,由导管与外套管组成,其特征在于,导管在外套管内活动,相互紧密配合,导管为一空芯管,导管一端固定有多根微细空芯子针,子针组成具有记忆功能的扇形束,子针缩入外套管内,伸出时恢复成扇形束,导管与外套管的尾端装入手柄; 所述的子针的自由端端口内均设有热电偶,或者仅在部分子针的自由端端口内设有热电偶,热电偶的补偿线从导管内腔引至手柄从尾端口引出。 A localized prostate cancer conformal RF ablation electrode, and the jacket tubes by the catheter, wherein the catheter within the outer sleeve activity, closely with each other, the hollow core tube is a conduit, the conduit having one end fixed multiple pieces of fine air the core pin, the composition of the sub-needle fan beam having a memory function, the sub-needle retracted into the outer tube, restored to the extended fan beam, the trailing end of the outer sleeve of the catheter handle charged; the free end of said sub-needle port equipped with a thermocouple, or only with a thermocouple, thermocouple compensation line leading from the catheter lumen to the handle end of the port from the port site drawn at the free end portion of the sub-needle.
2、 根据权利要求l所述的局灶性前列腺癌适形射频消融电极,其特征是: 所述的导管的前端固定有3〜7根微细空芯子针。 2, localized prostate cancer according to claim l conformal RF ablation electrode, characterized in that: the distal end of the catheter is fixed to the empty core 3~7 pieces of fine needles.
3、 根据权利要求1所述的局灶性前列腺癌适形射频消融电极,其特征是: 所述的扇形束,在其侧面看,子针与导管具有15〜30°的适形曲度。 3, localized prostate cancer according to claim 1, said conformable radiofrequency ablation electrode, characterized in that: said fan beam, on its side, and the sub-needle catheter having 15~30 ° conformal curvature.
4、 根据权利要求l-3任一条所述的局灶性前列腺癌适形射频消融电极,其特征是:所述的子针,其一端均插入导管端口内并焊固,但每根子针内腔均与导管内腔相通。 4, according to any of claims l-3 localized prostate cancer according to a conformal RF ablation electrode, characterized in that: said sub-needle, which are inserted and welded to one end of the solid within the conduit port, but each root inner needle chamber are in communication with the catheter lumen.
5、 根据权利要求1所述的局灶性前列腺癌适形射频消融电极,其特征是: 所述的外套管与子针配合的一端为成30°的斜口。 5, localized prostate cancer according to claim 1, said conformable radiofrequency ablation electrode, wherein: the outer sleeve and the sub-needle is fitted into one end of the bevel of 30 °.
6、 根据权利要求1或者5所述的局灶性前列腺癌适形射频消融电极,其特征是:所述的外套管外表面具有标有0. 5cm刻度的绝缘层。 6, localized prostate cancer according to claim 1 or 5, wherein the conformable radiofrequency ablation electrode, wherein: an outer surface of said outer sleeve has a scale marked with 0. 5cm insulating layer.
7、 根据权利要求1所述的局灶性前列腺癌适形射频消融电极,其特征是:所述的手柄上设有定位、导向和注射接口,在外套管手柄的前端有一注射接口, 手柄尾端安置有与射频消融仪相连接的接口。 7, localized prostate cancer according to claim 1, said conformable radiofrequency ablation electrode, characterized in that: a positioning, guiding and injecting the interface handle, the distal end of the outer sleeve of the handle has an injection port, the end of the handle RF end is disposed with an interface connected to ablator.
CN 200710036555 2007-01-18 2007-01-18 Focal prostate cancer conformal radiofrequency ablation electrode CN100434047C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009313391B2 (en) 2008-11-06 2015-09-03 Nxthera, Inc. Systems and methods for treatment of prostatic tissue
CA2742566A1 (en) 2008-11-06 2010-05-14 Nxthera, Inc. Systems and methods for treatment of bph
US9833277B2 (en) 2009-04-27 2017-12-05 Nxthera, Inc. Systems and methods for prostate treatment
NZ602609A (en) 2010-03-25 2014-12-24 Nxthera Inc Systems and methods for prostate treatment
EP2755614B1 (en) 2011-09-13 2017-11-01 Nxthera, Inc. Systems for prostate treatment
CN103829967B (en) * 2012-11-28 2016-06-01 上海西门子医疗器械有限公司 Apparatus and method for estimating the temperature field, the method of determining the region of interest and apparatus ct
CN105813591B (en) 2013-12-10 2018-05-01 恩克斯特拉公司 Vapor ablation system and method
US9968395B2 (en) 2013-12-10 2018-05-15 Nxthera, Inc. Systems and methods for treating the prostate
CN104287828A (en) * 2014-10-20 2015-01-21 周稼 Flexible hollow radiofrequency treatment electrode
CN107157571A (en) * 2016-03-07 2017-09-15 四川锦江电子科技有限公司 Interelectrode discharge ablation device
CN107157577A (en) * 2016-03-07 2017-09-15 四川锦江电子科技有限公司 Large-area discharge ablation device
CN105919668A (en) * 2016-04-15 2016-09-07 南京康友医疗科技有限公司 Multi-polar microwave ablation needle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2215324Y (en) 1995-03-17 1995-12-20 刘喜正 Electrode of catheter for high-temp. radio-frequency prostate therapeutic apparatus
US6638275B1 (en) 2000-10-05 2003-10-28 Medironic, Inc. Bipolar ablation apparatus and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2215324Y (en) 1995-03-17 1995-12-20 刘喜正 Electrode of catheter for high-temp. radio-frequency prostate therapeutic apparatus
US6638275B1 (en) 2000-10-05 2003-10-28 Medironic, Inc. Bipolar ablation apparatus and method

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