CN104720890A - Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation - Google Patents

Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation Download PDF

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Publication number
CN104720890A
CN104720890A CN201510105659.8A CN201510105659A CN104720890A CN 104720890 A CN104720890 A CN 104720890A CN 201510105659 A CN201510105659 A CN 201510105659A CN 104720890 A CN104720890 A CN 104720890A
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needle
hollow
electrode
magnetic resonance
hollow needle
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CN201510105659.8A
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林征宇
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福建医科大学附属第一医院
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Publication of CN104720890A publication Critical patent/CN104720890A/en

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Abstract

The invention relates to a split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation. The split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation comprises an electrode needle body, wherein the electrode needle body comprises a hollow needle tubing, a hollow handle fixedly connected to the rear end of the hollow needle tubing, and multiple elastic electrodes arranged in the hollow needle tubing; an insulation layer is arranged on the inner circumferential wall of the hollow needle tubing; the elastic electrodes can be forwards pushed and extend from the front end of the hollow needle tubing, is shaped like an umbrella when extending and is controllable in size; the electrode needle further comprises a pushing rod connected into the hollow needle tubing and the hollow handle in a sliding mode; the rear end of the pushing rod is exposed out of the rear end of the hollow handle and provided with an electronic port communicated with the elastic electrodes; a metal puncture needle is movably arranged outside the hollow needle tubing in a sleeving mode; the front end of the metal puncture needle is provided with an oblique opening. The electrode needle not only is large in ablation range, small in artifact under high field magnetic resonance and not prone to hiding the lesions, but also adopts the split design, and solves the technical problem in the prior art that as an integrated multipole needle is too long, the integrated multipole needle can not be suitable for the operation in a magnetic resonance aperture environment.

Description

分体式多极磁共振兼容射频消融电极针 Split MR-compatible multi-polar radiofrequency ablation needle electrodes

技术领域 FIELD

[0001] 本发明涉及一种电极针,特别涉及一种分体式多极磁共振兼容射频消融电极针。 [0001] The present invention relates to an electrode needle, in particular, to a split multi-pole magnetic resonance compatible radiofrequency ablation needle electrodes.

背景技术 Background technique

[0002] 射频消融(Rad1 frequency ablat1n, RFA)被广泛应用于治疗肝脏、肾脏、软组织等部位的恶性肿瘤,对部分小病灶的疗效与外科手术相当。 [0002] Radiofrequency ablation (Rad1 frequency ablat1n, RFA) are widely used in cancer treatment site of the liver, kidney, soft tissue, etc., on the part of small lesions considerable efficacy with surgery. 磁共振(Magnetic ResonanceImaging, MRI)无电离辐射、可以任意方位成像、具有良好的组织分辨率和多种温度敏感成像技术,是RFA引导和疗效判断的最佳影像手段。 MRI (Magnetic ResonanceImaging, MRI) non-ionizing radiation, any orientation can be imaged with good resolution and a variety of temperature-sensitive tissue imaging techniques, RFA is the best means for imaging and therapeutic evaluation of the guide. 但目前国内外多采用一般金属制作射频消融电极针,使用B超和CT引导射频消融,不能在MRI下操作。 But at home and abroad typically use more radiofrequency ablation needle electrode made of metal, the use of B ultrasound and CT guided radiofrequency ablation can not be operated under MRI. 目前国内尚无MRI兼容的射频消融电极针,国际上仅有奥林巴斯和RITA等研制MRI兼容的单极或多极射频消融电极针,但单极射频消融电极针消融范围小,不超过3cm,且在1.5T高场MRI下伪影大,易掩盖病灶,多极针均为一体化设计,长度较长,而高场MRI孔径较小,因此经常因为电极针太长而无法进行手术。 There are still no MRI-compatible RF ablation needle electrodes, only Olympus and the international development of MRI compatible RITA such as unipolar or multipolar radiofrequency ablation needle electrodes, but monopolar radiofrequency ablation needle ablation electrode small range, not more than 3cm, and artifacts under MRI at 1.5T high-field large, easy to cover the lesion, multi-polar needles are integrated design, longer length, and high-field MRI aperture is small, it is often because the electrode needle is too long for surgery .

发明内容 SUMMARY

[0003] 本发明的目的在于克服以上缺点,提供一种分体式多极磁共振兼容射频消融电极针,该电极针不仅消融范围大,在高场磁共振下伪影小,不易掩盖病灶,而且采用分体式设计,可在磁共振环境下先引导金属穿刺针进入病灶部位,然后在外部环境利用金属穿刺针引导电极针进入病灶部位,从而克服现有技术中因一体式多极针长度过长而无法适用于磁共振孔径环境下手术的技术问题。 [0003] The object of the present invention is to overcome the above disadvantages, there is provided a split multi-pole magnetic resonance compatible radiofrequency ablation needle electrode, the needle electrode is not only a wide range of ablation, small artifacts at high field magnetic resonance, easy to cover the lesion, and using split design, can be guided to the MR environment metal needle into the lesion site, and then the guide electrode needle into the lesion site with a metal puncture needle in an external environment, thereby overcoming the prior art pin by an integral multi-pole too long technical issues can not be applied to the operation of the magnetic resonance aperture environment.

[0004] 本发明是这样实现的:一种分体式多极磁共振兼容射频消融电极针,包括电极针,其特征在于:所述电极针包括空心针管、固定连接于空心针管后端的空心手柄以及多根设置于空心针管内的弹性电极,所述空心针管的内周壁设有绝缘层,所述弹性电极能从空心针管的前端向前推出伸展,伸展时呈伞状且大小可控,所述电极针还包括滑动连接于空心针管和空心手柄内的用于控制弹性电极推出或缩回的推动杆,所述推动杆的后端露置于空心手柄后端外并设有与弹性电极相连通的用于连接射频发生器的电子端口,所述空心针管外还活动套置有金属穿刺针,所述金属穿刺针的前端为斜口。 [0004] The present invention is implemented as follows: a separate-type multi-pole magnetic resonance compatible radiofrequency ablation electrode needles, comprising a needle electrode, characterized in that: said needle electrode comprises a hollow needle tube, a hollow needle fixedly connected to the rear end of the hollow tube and a handle a plurality of resilient electrodes disposed in the inner tube of the hollow needle, said hollow needle peripheral wall is provided with an insulating layer, said elastic hollow needle electrode distal from the launch tube is stretched forward, controlled size and shape umbrella when extended, the further comprising a needle electrode for slidably connected to the hollow tube and a hollow needle control handle or retraction of the resilient electrodes Release push rod, the push rod is exposed rear end of the outer hollow handle disposed and a rear end connected to the electrode via an elastic electronic port for the RF generator, the hollow needle outer tube further activities sleeved metal puncture needle, the distal end of the puncture needle is metal bevel.

[0005] 本发明提供的分体式多极磁共振兼容射频消融电极针,在使用时,先在磁共振舱内,在磁共振的引导下将金属穿刺针插入患者的病灶部位,然后扫描床退出,将电极针沿金属穿刺针插入病灶部位,然后扫描床再推入磁共振舱内,在磁共振的引导下将弹性电极推出空心导管,接通射频发生器进行射频消融手术。 [0005] The present invention provides a split multi-pole magnetic resonance compatible radiofrequency ablation needle electrodes, in use, the first magnetic resonance cabin, under the guidance of the magnetic resonance of the metal needle is inserted into the lesion site of a patient, and then scanning table Exit the needle electrode is inserted in a metal needle the lesion site, and then pushed into the MRI scanning bed compartment, under the guidance of the magnetic resonance electrode Release elastic hollow conduits, turning on the radio frequency generator radiofrequency ablation. 由于采用分体式设计,因此本发明在实施时不会受到操作空间的限制,可适用于磁共振孔径环境下的手术。 As a result of split design, the present invention is not so limited operating space in the embodiment, is applicable to magnetic resonance aperture surgery environment. 采用多电极设计,不仅消融范围大,而且在高场磁共振下伪影小,不易掩盖病灶。 Multi-electrode design is not only a wide range of ablation, and in high field MRI artifacts is small, easy to cover up the lesions.

[0006] 为了更好地控制弹性电极的推出或缩回,所述推动杆上设有沿轴向分布的导向键槽,所述空心手柄内设有与导向键槽相匹配的导向键。 [0006] In order to better control the introduction of the resilient electrode or retracted, the push rod is provided with a guide key groove axially distributed along, the hollow handle is equipped with the guide keyway guide key match.

[0007] 为了使空心针管能在金属穿刺针内伸缩自如又不松动,所述金属穿刺针的内径略大于空心针管的外径。 [0007] In order that the hollow needle tube in a freely retractable needle without loosening the metal, the inner diameter is slightly larger than the outer diameter of the metal needle in the hollow needle.

[0008] 为了使电极针在磁共振成像时不被磁场吸引且在磁共振下可见并不产生太大的金属伪影掩盖病灶,所述空心针管和金属穿刺针采用适用于磁共振场合的金属材料。 [0008] In order to make magnetic resonance imaging when the needle electrode is not necessarily an attractive magnetic field and produce much metal artifacts in MRI lesions masked, said hollow metal needle and syringe suitable for use where metallic magnetic resonance material.

[0009] 较佳的,所述空心针管和金属穿刺针采用镍镉钛合金。 [0009] Preferably, the hollow needle and the puncture needle nickel-cadmium metal alloy.

[0010] 较之现有技术而言,本发明具有以下优点: [0010] Compared with the prior art, the present invention has the following advantages:

[0011] (I)本发明提供的分体式多极磁共振兼容射频消融电极针,不仅消融范围大,在高场磁共振下伪影小,不易掩盖病灶,而且采用分体式设计,可在磁共振环境下先引导金属穿刺针进入病灶部位,然后在外部环境利用金属穿刺针引导电极针进入病灶部位,从而克服现有技术中因一体式多极针长度过长而无法适用于磁共振孔径环境下手术的技术问题; [0011] (I) of the present invention provides a split multi-pole magnetic resonance compatible radiofrequency ablation needle electrodes, not only a large extent of the ablation, at high field MRI artifacts small, easy to cover the lesion, and the use of split design, the magnetic environment first resonant metal guide needle into the lesion site, and then the guide electrode needle into the lesion site with a metal puncture needle in an external environment, thereby overcoming the prior art by one multipolar needle length is too long can not be applied to the environment of a magnetic resonance aperture technical problems at surgery;

[0012] (2)本发明提供的分体式多极磁共振兼容射频消融电极针,设有推动杆,推动杆上设有沿轴向分布的导向键槽,空心手柄内设有与导向键槽相匹配的导向键,能更好地控制弹性电极的推出或缩回以及伸出端伞状的大小; [0012] (2) the present invention provides a split multi-pole magnetic resonance compatible radiofrequency ablation needle electrodes, with the push lever, push rod is provided with axially distributed along the keyway guide, equipped with a handle and a hollow guide keyway match the guide key, better control of the launch or the elastic retraction of the electrode and the end of the umbrella projected size;

[0013] (3)本发明提供的分体式多极磁共振兼容射频消融电极针,空心针管和穿刺针采用镍镉钛合金,在磁共振成像时不被磁场吸引且在磁共振下可见并不产生太大的金属伪影掩盖病灶,大大方便了医生在高场磁共振下进行射频消融手术; [0013] (3) The present invention provides a split multi-pole magnetic resonance compatible radiofrequency ablation electrode needles, the hollow needle and the puncture needle nickel-cadmium alloy, are not attracted magnetic resonance imaging and magnetic field at the magnetic resonance is not seen have much metal artifacts obscure lesions, which greatly facilitates the physician radiofrequency ablation in high-field magnetic resonance;

[0014] (4)本发明提供的分体式多极磁共振兼容射频消融电极针,结构简单,性能可靠,具有广阔的市场前景。 [0014] (4) The present invention provides a split multi-pole magnetic resonance compatible radiofrequency ablation needle electrodes, the structure is simple, reliable, and has broad market prospect.

附图说明 BRIEF DESCRIPTION

[0015] 下面参照附图结合实施例对本发明作进一步说明: [0015] Referring to the drawings in conjunction with embodiments of the present invention is further described:

[0016] 图1是本发明分体式多极磁共振兼容射频消融电极针的结构示意图; [0016] FIG. 1 is a split multi-pole magnetic resonance structure of the present invention, a schematic diagram is compatible with radiofrequency ablation needle electrodes;

[0017] 图2是图1中弹性电极推出的结构示意图; [0017] FIG. 2 is a schematic view of an elastic electrode Release 1;

[0018] 图3是图1中电极针的结构示意图; [0018] FIG. 3 is a schematic view of the needle electrode in FIG 1;

[0019] 图4是图3中弹性电极推出的结构示意图; [0019] FIG. 4 is a schematic drawing of an elastic electrode 3 Release;

[0020] 图5是图1中穿金属刺针的结构示意图。 [0020] FIG. 5 is a block schematic in FIG. 1 through metal needles.

[0021] 图中符号说明:1、电极针,1-1、空心针管,1-2、空心手柄,1-3、弹性电极,1-4、推动杆,1-4-1、导向键槽,1-5、电子端口,2、金属穿刺针。 [0021] Description of Symbols in FIG: 1, the electrode pin 1-1, the hollow needle, 1-2, hollow handle, 1-3, elastic electrodes 1-4, push rod, 1-4-1, keyway guide, 1-5, the electronic port 2, a metal needle.

具体实施方式 Detailed ways

[0022] 下面结合说明书附图和具体实施例对本发明内容进行详细说明: [0022] The drawings and detailed description below in conjunction with embodiments of the present invention in detail:

[0023] 如图1 一图5所示,为本发明提供的一种分体式多极磁共振兼容射频消融电极针,包括电极针I,其特征在于:所述电极针I包括空心针管1-1、固定连接于空心针管1-1后端的空心手柄1-2以及多根设置于空心针管1-1内的弹性电极1-3,所述空心针管1-1的内周壁设有绝缘层,如图2或图4所示,所述弹性电极1-3能从空心针管1-1的前端向前推出伸展,伸展时呈伞状且大小可控,所述电极针I还包括滑动连接于空心针管1-1和空心手柄1-2内的用于控制弹性电极1-3推出或缩回的推动杆1-4,所述推动杆1-4的后端露置于空心手柄1-2后端外并设有与弹性电极1-3相连通的用于连接射频发生器的电子端口1-5,所述空心针管1-1外还活动套置有适用于磁共振场合的金属穿刺针2,所述金属穿刺针2的前端为斜口。 [0023] As shown in FIG. 5 a 1, the present method of providing a split multi-pole magnetic resonance compatible radiofrequency ablation electrode needle, the electrode needle comprising I invention is characterized in that: said electrode needle I comprises a hollow needle tube 1- 1, a hollow needle fixedly connected to the rear end of the hollow handle tube 1-1 and 1-2 disposed in a plurality of hollow flexible needle electrodes 1-1 1-3, 1-1 within the hollow needle tube peripheral wall is provided with an insulating layer, 2 or FIG. 4, the elastic hollow electrode 1-3 from the distal end of the needle tube Release 1-1 forwardly extending, umbrella-shaped and controlled size when extended, the electrode needle further comprises a sliding connection to I the hollow needle 11 and within the hollow handle for controlling the resilient electrodes 1-2 or 1-3 introduced retractable push bars 1-4, the rear end of the push rod disposed hollow handle exposed 1-4 1-2 and a rear end of the elastic outer electrode 1-3 is connected through an electronic interface for connection to the RF generator 1-5, said hollow needle outer tube sleeved 1-1 activities have also applicable to the case of the metal magnetic resonance puncture needle 2, the front end of the puncture needle 2 is metallic bevel. 可采用一条较长的连接线,连接电子端口1-5和射频发生器,将射频发生器置于磁共振扫描室之外,以免与磁共振的射频场相互干扰。 Employed a long cable to connect the port 1-5 and the electronic radio frequency generator, the radio frequency generator disposed outside the MRI scan room to avoid interference with the RF field of the MRI.

[0024] 为了更好地控制弹性电极1-3的推出或缩回,如图1或2或3或4所示,所述推动杆1-4上设有沿轴向分布的导向键槽1-4-1,所述空心手柄1-2内设有与导向键槽1-4-1相匹配的导向键(图中未示)。 [0024] In order to better control the introduction of the resilient electrode 1-3 or retraction, as shown in Figure 1 or 2 or 3 or 4, the push rod is provided with axially distributed along the keyway guide 1-4 1- 4-1, the handle is hollow and equipped with guide 1-2 1-4-1 keyway guide key matches (not shown).

[0025] 所述金属穿刺针2的内径略大于空心针管1-1的外径,空心针管1-1能在金属穿刺针2内伸缩自如又不松动。 [0025] The metal puncture needle is slightly larger than the inner diameter of the hollow needle 2 of the outer diameter of 1-1, 1-1 hollow needle can not loose metal retractable needle 2.

[0026] 所述空心针管1-1和金属穿刺针2采用适用于磁共振场合的金属材料,使电极针在磁共振成像时不被磁场吸引且在磁共振下可见并不产生太大的金属伪影掩盖病灶。 [0026] The hollow metal needle 11 and the puncture needle 2 is made of metal suitable for MRI applications, so that the magnetic resonance imaging when the needle electrode is not necessarily an attractive magnetic field and the metal have much at the magnetic resonance artifacts obscure lesions. 较佳的,空心针管1-1和金属穿刺针2采用镍镉钛合金。 Preferably, the hollow metal needle 11 and the puncture needle 2 using a nickel cadmium alloy.

[0027] 上述具体实施方式只是对本发明的技术方案进行详细解释,本发明并不只仅仅局限于上述实施例,凡是依据本发明原理的任何改进或替换,均应在本发明的保护范围之内。 [0027] DETAILED DESCRIPTION just above aspect of the invention will be explained in detail, the present invention is not only limited to the embodiments described above, all according to principles of the present invention any modifications or alterations shall fall within the scope of the present invention.

Claims (5)

1.一种分体式多极磁共振兼容射频消融电极针,包括电极针(I),其特征在于:所述电极针(I)包括空心针管(1-1)、固定连接于空心针管(1-1)后端的空心手柄(1-2)以及多根设置于空心针管(1-1)内的弹性电极(1-3),所述空心针管(1-1)的内周壁设有绝缘层,所述弹性电极(1-3)能从空心针管(1-1)的前端向前推出伸展,伸展时呈伞状且大小可控,所述电极针⑴还包括滑动连接于空心针管(1-1)和空心手柄(1-2)内的用于控制弹性电极(1-3)推出或缩回的推动杆(1-4),所述推动杆(1-4)的后端露置于空心手柄(1-2)后端外并设有与弹性电极(1-3)相连通的用于连接射频发生器的电子端口(1-5),所述空心针管(1-1)外还活动套置有金属穿刺针(2),所述金属穿刺针(2)的前端为斜口。 A split multi-pole magnetic resonance compatible radiofrequency ablation electrode needle, the electrode needle comprising (I), wherein: said needle electrode (I) comprising a hollow needle (1-1), is fixedly connected to a hollow needle tube (1 -1), the rear end of a hollow handle (1-2) and a plurality of resilient electrodes (1-3) arranged in the hollow needle (1-1), the inner hollow needle (1-1) provided with a peripheral wall of the insulating layer said elastic electrode (1-3) from the distal end of the hollow needle (1-1) Release stretched forward, the extended umbrella-shaped and controlled size, the electrode needle further comprises a sliding ⑴ hollow needle connected to a tube (1 -1 for the rear end) and the hollow handle (1-2) an elastic control electrode (1-3) Release push rod (1-4) or a retracted, the push rod (1-4) exposed in the hollow handle (1-2) and an outer rear end connected to the RF generator is provided with an electronic port (1-5), said hollow needle (1-1) and an elastic electrode (1-3) for communicating the outer activities also sleeved with a metal puncture needle (2), the front end of the metal needle (2) is a bevel.
2.根据权利要求1所述的分体式多极磁共振兼容射频消融电极针,其特征在于:所述推动杆(1-4)上设有沿轴向分布的导向键槽(1-4-1),所述空心手柄(1-2)内设有与导向键槽(1-4-1)相匹配的导向键。 The split according to claim 1 MR-compatible multipole RF ablation needle electrodes, wherein: the guide is provided with axially distributed key groove (1-4-1 on the push rod (1-4) ), said hollow handle (1-2) is provided with the keyway guide (1-4-1) to match the guide key.
3.根据权利要求1所述的分体式多极磁共振兼容射频消融电极针,其特征在于:所述金属穿刺针(2)的内径略大于空心针管(1-1)的外径。 The split according to claim 1 MR-compatible multipole RF ablation needle electrodes, wherein: an inner diameter of the metal needle (2) is slightly larger than the outer diameter of the hollow needle (1-1).
4.根据权利要求1-3中任一项所述的分体式多极磁共振兼容射频消融电极针,其特征在于:所述空心针管(1-1)和金属穿刺针(2)采用适用于磁共振场合的金属材料。 The split of any one of claims 1 to 3 multipole magnetic resonance compatible radiofrequency ablation electrode pin, wherein: the hollow needle tube (1-1) and a metal needle (2) applies MRI where a metal material.
5.根据权利要求4所述的分体式多极磁共振兼容射频消融电极针,其特征在于:所述空心针管(1-1)和金属穿刺针(2)采用镍镉钛合金。 According to claim 4 split multi-pole magnetic resonance compatible radiofrequency ablation electrode pin, wherein: the hollow needle tube (1-1) and a metal needle (2) nickel-cadmium alloy.
CN201510105659.8A 2015-03-11 2015-03-11 Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation CN104720890A (en)

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CN2524693Y (en) * 2001-12-30 2002-12-11 柳伯安 Cluster radio frequency needle with puncture sleeve
WO2011103096A2 (en) * 2010-02-16 2011-08-25 Angiodynamics, Inc. Ablation device with guide sleeves
CN202044344U (en) * 2011-03-24 2011-11-23 迈德医疗科技(上海)有限公司 Tower type multi-layer-probe radio frequency ablation electrode device for hepatic tumor treatment
CN202235678U (en) * 2011-10-06 2012-05-30 金海波 Medical flexible puncture needle
CN103027742A (en) * 2012-12-31 2013-04-10 中国科学技术大学 Nuclear magnetic resonance compatible cold-thermal therapy system
US20140336639A1 (en) * 2004-10-28 2014-11-13 Boston Scientific Scimed, Inc. Ablation probe with flared electrodes

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CN2524693Y (en) * 2001-12-30 2002-12-11 柳伯安 Cluster radio frequency needle with puncture sleeve
US20140336639A1 (en) * 2004-10-28 2014-11-13 Boston Scientific Scimed, Inc. Ablation probe with flared electrodes
WO2011103096A2 (en) * 2010-02-16 2011-08-25 Angiodynamics, Inc. Ablation device with guide sleeves
CN202044344U (en) * 2011-03-24 2011-11-23 迈德医疗科技(上海)有限公司 Tower type multi-layer-probe radio frequency ablation electrode device for hepatic tumor treatment
CN202235678U (en) * 2011-10-06 2012-05-30 金海波 Medical flexible puncture needle
CN103027742A (en) * 2012-12-31 2013-04-10 中国科学技术大学 Nuclear magnetic resonance compatible cold-thermal therapy system

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Publication number Priority date Publication date Assignee Title
TWI626035B (en) * 2016-01-28 2018-06-11 財團法人工業技術研究院 Radiofrequency ablation electrode needle

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