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 PDFInfo
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- 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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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
Technical field
The present invention relates to a kind of electrode needle, particularly a kind of Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle.
Background technology
Radio-frequency (RF) ablation (Radio frequency ablation, RFA) is widely used in the malignant tumor for the treatment of the positions such as liver, kidney, soft tissue, suitable with surgical operation to the curative effect of part small lesion.Magnetic resonance (Magnetic Resonance Imaging, MRI) without ionizing radiation, can arbitrary orientation imaging, have and good organize resolution and various temperature sensitive imaging technology, be that RFA guides and the optimal images means of Outcome measure.But the common metal that adopts makes radio-frequency ablation electrode needle both at home and abroad at present more, use B ultrasonic and CT to guide radio-frequency (RF) ablation, can not operate under MRI.The domestic radio-frequency ablation electrode needle that there is no MRI compatibility at present, Olympus and RITA etc. is only had to develop one pole or the multi-pole rf ablating electrode pin of MRI compatibility in the world, but monopolar radio frequency ablating electrode pin ablation range is little, be no more than 3cm, and artifact is large under 1.5T high field MRI, easily covers focus, multipole pin is all the integrated design, length is longer, and high field MRI aperture is less, therefore often cannot perform the operation because electrode needle is oversize.
Summary of the invention
The object of the invention is to overcome above shortcoming, a kind of Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle is provided, this electrode needle not only ablation range is large, under high-field magnetic resonance, artifact is little, not easily cover focus, and employing split-type design, lesions position can be entered by first guide wire puncture needle under magnetic resonance environment, then utilize metal puncture pin leading electrode pin to enter lesions position in external environment condition, thus overcome the technical problem that cannot be applicable to magnetic resonance aperture environment menisectomy in prior art because integral type multipole pin length is long.
The present invention is achieved in that a kind of Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle, comprise electrode needle, it is characterized in that: described electrode needle comprises hollow needle tubing, be fixedly connected on hollow handle and the many elastic electrodes be arranged in hollow needle tubing of hollow syringe rear end, the internal perisporium of described hollow needle tubing is provided with insulating barrier, described elastic electrode can release stretching, extension forward from the front end of hollow needle tubing, be umbrella during stretching, extension and size is controlled, described electrode needle also comprises the catch bar for controlling elastic electrode release or retraction be slidably connected in hollow needle tubing and hollow handle, the rear end of described catch bar to be placed on outside hollow handle rear end and to be provided with the electric ports for being connected radio-frequency signal generator be connected with elastic electrode, go back movable sleeve outside described hollow needle tubing and be equipped with metal puncture pin, the front end of described metal puncture pin is angle.
Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle provided by the invention, in use, first in magnetic resonance cabin, metal puncture pin is inserted the lesions position of patient under the guiding of magnetic resonance, then scanning bedly to exit, electrode needle is inserted lesions position along metal puncture pin, then scanning bedly push in magnetic resonance cabin again, under the guiding of magnetic resonance, elastic electrode is released hollow tubing conductor, connect radio-frequency signal generator and carry out radio-frequency ablation procedure.Owing to adopting split-type design, therefore the present invention can not be subject to the restriction of working place when implementing, and is applicable to the operation under the environment of magnetic resonance aperture.Employing multi-electrode designs, and not only ablation range is large, and under high-field magnetic resonance, artifact is little, not easily covers focus.
In order to control release or the retraction of elastic electrode better, described catch bar is provided with the guide key groove distributed vertically, is provided with the feather key matched with guide key groove in described hollow handle.
In order to make hollow needle tubing capable of expansion and contractionly in metal puncture pin not loosen again, the internal diameter of described metal puncture pin is slightly larger than the external diameter of hollow needle tubing.
In order to make electrode needle when nuclear magnetic resonance not by magnetic field suction and not producing too large metal artifacts covers focus as seen under magnetic resonance, described hollow needle tubing and metal puncture pin adopt the metal material being applicable to magnetic resonance occasion.
Preferably, described hollow needle tubing and metal puncture pin adopt NI-G titanium alloy.
Compared to prior art, the present invention has the following advantages:
(1) Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle provided by the invention, not only ablation range is large, under high-field magnetic resonance, artifact is little, not easily cover focus, and employing split-type design, lesions position can be entered by first guide wire puncture needle under magnetic resonance environment, then utilize metal puncture pin leading electrode pin to enter lesions position in external environment condition, thus overcome the technical problem that cannot be applicable to magnetic resonance aperture environment menisectomy in prior art because integral type multipole pin length is long;
(2) Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle provided by the invention, be provided with catch bar, catch bar is provided with the guide key groove distributed vertically, be provided with the feather key matched with guide key groove in hollow handle, the release of elastic electrode or the size of retraction and external part umbrella can be controlled better;
(3) Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle provided by the invention, hollow needle tubing and puncture needle adopt NI-G titanium alloy, when nuclear magnetic resonance, not producing too large metal artifacts covers focus as seen not by magnetic field suction and under magnetic resonance, greatly facilitates doctor and carry out radio-frequency ablation procedure under high-field magnetic resonance;
(4) Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle provided by the invention, structure is simple, and dependable performance, has wide market prospect.
Accompanying drawing explanation
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings:
Fig. 1 is the structural representation of Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle of the present invention;
Fig. 2 is the structural representation that Fig. 1 Elastic electrode is released;
Fig. 3 is the structural representation of electrode needle in Fig. 1;
Fig. 4 is the structural representation that Fig. 3 Elastic electrode is released;
Fig. 5 is the structural representation wearing metal pricker in Fig. 1.
Symbol description in figure: 1, electrode needle, 1-1, hollow needle tubing, 1-2, hollow handle, 1-3, elastic electrode, 1-4, catch bar, 1-4-1, guide key groove, 1-5, electric ports, 2, metal puncture pin.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, content of the present invention is described in detail:
As Figure 1-Figure 5, for a kind of Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle provided by the invention, comprise electrode needle 1, it is characterized in that: described electrode needle 1 comprises hollow needle tubing 1-1, be fixedly connected on hollow handle 1-2 and the many elastic electrode 1-3 be arranged in hollow needle tubing 1-1 of hollow needle tubing 1-1 rear end, the internal perisporium of described hollow needle tubing 1-1 is provided with insulating barrier, as shown in figures 2 or 4, described elastic electrode 1-3 can release stretching, extension forward from the front end of hollow needle tubing 1-1, be umbrella during stretching, extension and size is controlled, described electrode needle 1 also comprises the catch bar 1-4 for controlling elastic electrode 1-3 release or retraction be slidably connected in hollow needle tubing 1-1 and hollow handle 1-2, the rear end of described catch bar 1-4 to be placed on outside hollow handle 1-2 rear end and to be provided with the electric ports 1-5 for being connected radio-frequency signal generator be connected with elastic electrode 1-3, go back movable sleeve outside described hollow needle tubing 1-1 and be equipped with the metal puncture pin 2 being applicable to magnetic resonance occasion, the front end of described metal puncture pin 2 is angle.The connecting line that one longer can be adopted, connect electric ports 1-5 and radio-frequency signal generator, radio-frequency signal generator is placed in outside magnetic resonance scanning room, in order to avoid mutually disturb with the radio-frequency field of magnetic resonance.
In order to control release or the retraction of elastic electrode 1-3 better, as shown in Fig. 1 or 2 or 3 or 4, described catch bar 1-4 is provided with the guide key groove 1-4-1 distributed vertically, is provided with the feather key (not shown) matched with guide key groove 1-4-1 in described hollow handle 1-2.
The internal diameter of described metal puncture pin 2 is slightly larger than the external diameter of hollow needle tubing 1-1, and hollow needle tubing 1-1 can capable of expansion and contractionly in metal puncture pin 2 not loosen again.
Described hollow needle tubing 1-1 and metal puncture pin 2 adopt the metal material being applicable to magnetic resonance occasion, make electrode needle when nuclear magnetic resonance not by magnetic field suction and not producing too large metal artifacts covers focus as seen under magnetic resonance.Preferably, hollow needle tubing 1-1 and metal puncture pin 2 adopt NI-G titanium alloy.
Above-mentioned detailed description of the invention is just explained in detail technical scheme of the present invention, and the present invention has more than and is only confined to above-described embodiment, and every any improvement according to the principle of the invention or replacement, all should within protection scope of the present invention.
Claims (5)
1. a Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle, comprise electrode needle (1), it is characterized in that: described electrode needle (1) comprises hollow needle tubing (1-1), be fixedly connected on hollow handle (1-2) and the many elastic electrodes (1-3) be arranged in hollow needle tubing (1-1) of hollow needle tubing (1-1) rear end, the internal perisporium of described hollow needle tubing (1-1) is provided with insulating barrier, described elastic electrode (1-3) can release stretching, extension forward from the front end of hollow needle tubing (1-1), be umbrella during stretching, extension and size is controlled, described electrode needle (1) also comprises the catch bar (1-4) for controlling elastic electrode (1-3) release or retraction be slidably connected in hollow needle tubing (1-1) and hollow handle (1-2), the rear end of described catch bar (1-4) to be placed on outside hollow handle (1-2) rear end and to be provided with the electric ports (1-5) for being connected radio-frequency signal generator be connected with elastic electrode (1-3), go back movable sleeve outside described hollow needle tubing (1-1) and be equipped with metal puncture pin (2), the front end of described metal puncture pin (2) is angle.
2. Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle according to claim 1, it is characterized in that: described catch bar (1-4) is provided with the guide key groove (1-4-1) distributed vertically, in described hollow handle (1-2), be provided with the feather key matched with guide key groove (1-4-1).
3. Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle according to claim 1, is characterized in that: the internal diameter of described metal puncture pin (2) is slightly larger than the external diameter of hollow needle tubing (1-1).
4. the Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle according to any one of claim 1-3, is characterized in that: described hollow needle tubing (1-1) and metal puncture pin (2) adopt the metal material being applicable to magnetic resonance occasion.
5. Split-type multi-pole magnetic resonance compatible radio-frequency ablation electrode needle according to claim 4, is characterized in that: described hollow needle tubing (1-1) and metal puncture pin (2) adopt NI-G titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105659.8A CN104720890A (en) | 2015-03-11 | 2015-03-11 | Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105659.8A CN104720890A (en) | 2015-03-11 | 2015-03-11 | Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation |
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| CN104720890A true CN104720890A (en) | 2015-06-24 |
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| CN201510105659.8A Pending CN104720890A (en) | 2015-03-11 | 2015-03-11 | Split type multipole electrode needle compatible with magnetic resonance and radio frequency ablation |
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Cited By (4)
| 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 |
| CN109363665A (en) * | 2018-12-16 | 2019-02-22 | 何连交 | A kind of security protection pin electrode |
| CN111685864A (en) * | 2019-08-07 | 2020-09-22 | 上海明石医疗科技有限公司 | Integrated radio frequency sleeve |
| US11207016B2 (en) | 2018-12-28 | 2021-12-28 | Biosense Webster (Israel) Ltd. | Mapping ECG signals using a multipole electrode assembly |
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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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2015
- 2015-03-11 CN CN201510105659.8A patent/CN104720890A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (5)
| 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 |
| US10888372B2 (en) | 2016-01-28 | 2021-01-12 | Industrial Technology Research Institute | Radiofrequency ablation electrode needle |
| CN109363665A (en) * | 2018-12-16 | 2019-02-22 | 何连交 | A kind of security protection pin electrode |
| US11207016B2 (en) | 2018-12-28 | 2021-12-28 | Biosense Webster (Israel) Ltd. | Mapping ECG signals using a multipole electrode assembly |
| CN111685864A (en) * | 2019-08-07 | 2020-09-22 | 上海明石医疗科技有限公司 | Integrated radio frequency sleeve |
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