WO2018006384A1 - Électrode d'ablation - Google Patents

Électrode d'ablation Download PDF

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Publication number
WO2018006384A1
WO2018006384A1 PCT/CN2016/089278 CN2016089278W WO2018006384A1 WO 2018006384 A1 WO2018006384 A1 WO 2018006384A1 CN 2016089278 W CN2016089278 W CN 2016089278W WO 2018006384 A1 WO2018006384 A1 WO 2018006384A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
ablation
flexible tube
tube body
handle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/089278
Other languages
English (en)
Chinese (zh)
Inventor
李楚武
邹波
朱晓林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Jinjiang Electronic Science and Technology Co Ltd
Original Assignee
Sichuan Jinjiang Electronic Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Jinjiang Electronic Science and Technology Co Ltd filed Critical Sichuan Jinjiang Electronic Science and Technology Co Ltd
Priority to PCT/CN2016/089278 priority Critical patent/WO2018006384A1/fr
Publication of WO2018006384A1 publication Critical patent/WO2018006384A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor

Definitions

  • the invention relates to the field of pain ablation, and in particular to an ablation electrode.
  • Radiofrequency ablation technology is used for nerve therapy, soft tissue injury and reduction of soft tissue pressure between vertebrae, such as trigeminal neuralgia, lumbar disc herniation, etc.
  • Radiofrequency ablation is to insert the puncture needle into the diseased tissue, release RF energy through the electrode needle, and form with the electrode piece.
  • the circuit the Joule heat generated by the ion conduction current in the biological tissue and the heat generated by the biological tissue in the high frequency electromagnetic field due to the dielectric loss, causes the temperature of the diseased tissue to rise, thereby achieving the therapeutic purpose, the treatment range and the effect and the organization It is related to the temperature being applied, and the temperature is determined by the energy applied, the rate of heating, and the thermal properties of the tissue.
  • the heating temperature is from 42 ° C to 45 ° C for 30-60 min, which can lead to irreversible denaturation of proteins (including membrane proteins) in cells.
  • proteins including membrane proteins
  • the tissue temperature rises to 60 ° C the time for the cells to produce irreversible damage will be greatly shortened.
  • the temperature exceeds 60 ° C the protein denatures and the cells die for a while, thereby achieving a therapeutic effect.
  • Traditional puncture needle or blunt needle because the needle is fixed and curved, can not reach the treatment site very well, such as: the curved shape can not be too large, the curved shape will affect the puncture effect, otherwise it will lead to unsatisfactory contact, affecting the treatment effect
  • Traditional puncture needles can only be unipolar or bipolar ablation.
  • the length of conventional electrodes is fixed at 5mm, 10mm or 15mm. The ablation length and range cannot be controlled during ablation. For multi-point ablation or pulse radiofrequency therapy, multiple punctures need to be inserted.
  • the needle is treated to increase the pain of the patient and increase the difficulty of the operation process; when the nerve root is observed by the contrast agent, the contrast agent of the conventional needle is unevenly distributed.
  • the object of the present invention is to overcome the above-mentioned deficiencies existing in the prior art and to provide a soft and yet Elasticity, better abutment, reduce the difficulty of surgery, more uniform distribution of contrast agent, ablation electrode with better puncture effect.
  • the present invention provides the following technical solutions:
  • An ablation electrode for use in the field of pain ablation comprising:
  • a flexible pipe body which is a hose with two ends formed of a biocompatible material, capable of being bent, including a free end;
  • a support member which is disposed in the flexible tube body, is capable of being withdrawn from the flexible tube body from the free end, and one end of which can pass through the free end of the flexible tube body;
  • the number of the electrodes is greater than or equal to two, and discharge ablation is formed between the electrodes.
  • forming a discharge ablation between the electrodes includes: at least one radio frequency current transmitting electrode in the electrode, and at least one radio frequency current receiving electrode.
  • the radio frequency current receiving electrode and the radio frequency current transmitting electrode comprise electrodes having a potential difference between each other at the same instant, and the two electrodes are arranged in cooperation with each other, so that the radio frequency current is applied to the two electrodes and the human body after the electrodes are connected to the radio frequency current.
  • a closed loop is formed between the tissues and at least one closed loop is formed to form a discharge ablation.
  • the existing ablation technology attaches the back plate to the human skin tissue, and places an ablation catheter on the surface of the tissue that needs to be ablated inside the human body, and transmits the radio frequency current to the human tissue through the ablation catheter and the back plate, which is equivalent to the inner surface and the outer surface of the human tissue.
  • the direction of the current is perpendicular to the surface of the human tissue, and the heating direction is also perpendicular to the surface of the human tissue, so that a certain depth can be ablated, but since the heating is only perpendicular to the surface of the human body, only longitudinal heating, lack of a lateral heating source, The lateral direction of the surface of the human tissue is only heated by heat transfer, and therefore, the lateral heating area is small and the ablation area is small.
  • the ablation electrode of the present invention is provided with at least two electrodes for transmitting radio frequency to human tissue
  • the RF current forms a closed loop through the electrodes, body tissue, and other electrodes, and at least forms a closed loop.
  • lateral heating can be performed on the human tissue, and the heating area is increased compared with the existing longitudinal heating, which can quickly ablate a large area of the lesion tissue, save the ablation operation time, and improve the ablation efficiency, thereby reducing the patient's pain and reducing Surgical risk.
  • the solution directly sets a plurality of electrodes on the ablation electrode, and the ablation plate can be used without a back plate.
  • the radio frequency current is transmitted to the body tissue to be ablated through the electrode disposed on the ablation electrode. Thereby ablation is performed, and the ablation plate can be eliminated without a back plate, thus making the device simpler.
  • the flexible tubular body and the supporting member are used to replace the fixed curved pointed needle or the blunt needle of the prior art, and after the flexible tubular body is reached by the support member, the supporting member is extracted and passed through the flexible tubular body.
  • the hose conveys a contrast agent or a medicament for performing a lower order work, and the puncture effect is better.
  • the flexible tube body is soft and elastic, and the abutment is better, the operation difficulty is reduced, and the flexible tube body has a free end opening, and the contrast is performed.
  • the agent is more evenly distributed and the image effect is more ideal.
  • the ablation electrode further includes a handle, the flexible tube body is non-free end mounted on the handle, the handle is hollow, and the support member can be simultaneously disposed on the flexible tube body, Inside the handle, the flexible pipe body is hollow, inserted into the support member through the handle, and protrudes from the free end opening of the flexible pipe body to achieve a better puncture effect.
  • the flexible tube body is further provided with a chamber for passing the support member, the integration degree is higher, the volume of the flexible tube body is reduced, the volume of the ablation electrode is smaller, and the patient is reduced. pain of.
  • the ablation electrode further includes a temperature sensor mounted on a lower surface of the electrode, the temperature sensor being powered by a temperature sensor wire, the electrode being energized by an electrode lead, a temperature sensor passes through the chamber, and a temperature sensor is mounted to the electrode.
  • the electrode lead and the temperature sensor lead are wound in the same direction in the flexible tube body, and the handle end is provided with a hole for the electrode lead and the temperature sensor lead to protrude.
  • the electrode lead and the temperature sensor lead extend out of the hole and are connected to the external power source through the plug, and the integration degree is higher, the ablation electrode is smaller in volume, the volume of the flexible tube body is reduced, and the pain of the patient is reduced.
  • the electrode is disposed on an outer surface of the free end of the flexible tubular body.
  • the supporting member is a core, which includes a mounting seat and a mandrel, and the mandrel may be in the shape of a straight shape, a curved shape or a circular arc shape, and is mounted on the mounting seat and worn.
  • the utility model is provided in the flexible pipe body, and the mounting seat can be fixedly mounted on the end of the handle, and the structure is simple and scientific.
  • the handle end is a pipe body with a thread distributed outside
  • the mounting seat is provided with an internal thread that cooperates with a thread on the handle
  • the mandrel is disposed in the flexible pipe body.
  • the mounting seat cooperates with the handle to realize positioning, and the mounting seat can be rotated and inserted into the handle.
  • the mandrel is a strip having a hardness greater than that of the flexible hose, and the top portion of the mandrel is a boss having a cross section that is gradually smaller or has a constant cross section, which is easy to puncture. .
  • the electrode is wrapped around the outer surface of the free end of the flexible tubular body, the number is equal to or greater than one, and the multi-pole ablation can be performed, and only one flexible tube body is inserted for treatment, thereby reducing the patient's condition. Pain, reducing the difficulty of the surgery.
  • Figure 1 is a schematic view showing the structure of the present invention when the core is not inserted.
  • FIG. 2 is a schematic view showing the structure of the present invention when inserting a core.
  • FIG. 3 is a schematic structural view of a schematic wire arrangement of the present invention.
  • Figure 4 is a schematic view showing the first structure of the electrode of the present invention.
  • Figure 5 is a schematic view showing the second structure of the electrode of the present invention.
  • Figure 6 is a schematic view showing the third structure of the electrode of the present invention.
  • Figure 7 is a first schematic view of the wire arrangement of the present invention.
  • Figure 8 is a second schematic view of the wire arrangement of the present invention.
  • Figure 9 is a schematic view showing the structure of a mandrel of the core of the present invention.
  • Figure 10 is a schematic view showing the structure of a liner of the present invention.
  • Figure 11 is an effect view of the present invention when the core of Figure 10 is used.
  • Figure 12 is a schematic view showing another structure of the mandrel of the core of the present invention.
  • Figure 13 is a schematic view showing another structure of the core of the present invention.
  • Fig. 14 is a view showing the effect of the present invention when the core of Fig. 13 is used.
  • an ablation electrode is used in the field of pain ablation, which includes:
  • the flexible pipe body 3 is a hose with two ends of biocompatible material, which can be bent, and includes a free end 1.
  • the flexible pipe body 3 is specifically made of a biocompatible polymer material (such as : polyether block amide, polyurethane or nylon);
  • a support member which is disposed in the flexible pipe body 3, can be drawn from the flexible pipe body 3 without the free end 1, one end of which can pass through the free end 1 of the flexible pipe body 3;
  • An electrode 2 which is disposed at the free end 1 of the flexible tubular body 3, is capable of releasing radio frequency energy, and the electrode 2 surrounds the outer surface of the free end 1 of the flexible tubular body 3 in an amount equal to or greater than two, in this embodiment 4, distributed along the length direction of the flexible pipe body 3, each electrode 2 is powered by a separate electrode wire 9, and the RF source connected to each electrode has a potential difference or a phase difference, which can form a discharge ablation between the electrodes. More adaptable and less patiently painful.
  • the ablation electrode further includes a handle 4, the non-free end 1 of the flexible tube body 3 is mounted on the handle 4, the handle 4 is hollow, and the support member can be simultaneously disposed at the flexible In the tube body 3 and the handle 4, the handle 4 is a tube body, and the outer surface thereof is provided with a non-slip texture for the doctor to hold.
  • the flexible pipe body 3 is further provided with a chamber for passing through the support member.
  • the ablation electrode further includes the temperature sensor mounted to a lower surface of the electrode 2, the temperature sensor being energized by a temperature sensor lead 8, the temperature sensor passing through the chamber, the temperature sensor being temperature The sensor lead 8 is energized and the electrode is energized by the electrode lead 9.
  • the electrode lead 9 and the temperature sensor lead 8 are wound in the same direction in the flexible tube body, and the side-by-side manner is various.
  • the temperature sensor lead 8 can be side by side. On the two sides of the electrode lead 9, they may also be arranged side by side between two adjacent electrode leads 9.
  • the handle 4 is provided with a hole for the electrode lead 9 and the temperature sensor lead 8 to protrude. 9.
  • the temperature sensor wires 8 extend out of the holes and are assembled into a wire harness 5, which is connected to an external power source through the plug 6.
  • the supporting member is a lining core 7, which includes a mounting seat and a mandrel.
  • the mandrel may be in the shape of a straight shape, a curved shape or a circular arc shape, and is mounted on the mounting seat and disposed.
  • the mounting seat can be fixedly mounted on the end of the handle 4. When the mandrel is inserted into the flexible pipe body 3 and the handle 4, it is an interference fit or a transition fit.
  • the end of the handle 4 is a pipe body with a thread on the outer side, and the mounting seat is provided with an internal thread that cooperates with the thread on the handle 4, and the mandrel is disposed in the flexible pipe body 3, The mounting seat cooperates with the handle 4 to achieve positioning.
  • the mandrel is a strip having a hardness greater than that of the flexible hose, and the top of the mandrel is a portion of the flexible pipe body 3 having a cross section that is gradually smaller or has a constant cross section. It may be a semi-spherical shape, a conical shape, a trapezoidal boss, a bullet shape, and the mandrel is made of stainless steel or titanium.
  • the lining core 7 can have different shapes. As shown in FIG. 9 to FIG. 11 , the top of the mandrel is bent once at an angle to support the flexible tubular body 3 so that the free end 1 thereof becomes this shape and can better adapt to the shape of the lesion;
  • the top of the mandrel is curved in a circular arc shape, and is shaped to support the flexible tubular body 3 such that the free end 1 thereof has a circular arc shape, which can better adapt to the shape of the lesion portion;
  • the core 7 of different shape mandrels can be customized, and the treatment effect is good for treatment.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne une électrode d'ablation dans le domaine de l'ablation pour soulagement de la douleur, comprenant : un corps de tube flexible (3), qui est un tube flexible constitué d'un matériau biocompatible ayant des ouvertures aux deux extrémités, peut être courbé, et comprend une extrémité libre (1) ; une partie de support, qui s'étend à l'intérieur du corps de tube flexible (3), peut être retirée à travers une extrémité non libre du corps de tube flexible (3), et dont une extrémité de cette dernière peut s'étendre à travers l'extrémité libre (1) du corps de tube flexible (3) ; et une électrode (2), qui est disposée au niveau de l'extrémité libre (1) du corps de tube flexible (3) et peut libérer de l'énergie radiofréquence. L'électrode d'ablation est flexible et élastique, et peut être mieux fixée, réduisant ainsi la difficulté de fonctionnement, ce qui permet de distribuer plus uniformément un agent de contraste et d'obtenir un meilleur effet de ponction.
PCT/CN2016/089278 2016-07-07 2016-07-07 Électrode d'ablation Ceased WO2018006384A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/089278 WO2018006384A1 (fr) 2016-07-07 2016-07-07 Électrode d'ablation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/089278 WO2018006384A1 (fr) 2016-07-07 2016-07-07 Électrode d'ablation

Publications (1)

Publication Number Publication Date
WO2018006384A1 true WO2018006384A1 (fr) 2018-01-11

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PCT/CN2016/089278 Ceased WO2018006384A1 (fr) 2016-07-07 2016-07-07 Électrode d'ablation

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WO (1) WO2018006384A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115414108A (zh) * 2022-08-12 2022-12-02 洲瓴(上海)医疗器械有限公司 直线型脉冲消融装置
CN115804636A (zh) * 2022-12-20 2023-03-17 杭州睿笛生物科技有限公司 一种适用于外科房颤消融的脉冲电场消融夹
CN115886986A (zh) * 2022-12-20 2023-04-04 杭州睿笛生物科技有限公司 一种外科房颤消融的脉冲电场消融笔
CN116196086A (zh) * 2021-12-31 2023-06-02 融和医疗科技(浙江)有限公司 一种具有稳定输送功能的消融装置
CN121287282A (zh) * 2025-10-29 2026-01-09 北京搏芯医疗科技有限公司 一种脉冲消融装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1927131A (zh) * 2001-05-01 2007-03-14 咖帝玛股份有限公司 螺旋形电生理导管
CN102429721A (zh) * 2010-09-29 2012-05-02 心诺普医疗技术（北京）有限公司 一种消融系统
CN102846374A (zh) * 2011-06-30 2013-01-02 韦伯斯特生物官能(以色列)有限公司 具有可变弓形远侧段的导管
US20140148805A1 (en) * 1999-04-05 2014-05-29 Medtronic, Inc. Ablation catheters and associated systems and methods
CN104605930A (zh) * 2014-12-29 2015-05-13 上海魅丽纬叶医疗科技有限公司 一种螺旋结构的射频消融导管及其设备
CN105012009A (zh) * 2014-04-22 2015-11-04 上海微创电生理医疗科技有限公司 一种肾动脉射频消融电极导管
CN105534595A (zh) * 2014-10-31 2016-05-04 四川锦江电子科技有限公司 一种消融电极

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140148805A1 (en) * 1999-04-05 2014-05-29 Medtronic, Inc. Ablation catheters and associated systems and methods
CN1927131A (zh) * 2001-05-01 2007-03-14 咖帝玛股份有限公司 螺旋形电生理导管
CN102429721A (zh) * 2010-09-29 2012-05-02 心诺普医疗技术（北京）有限公司 一种消融系统
CN102846374A (zh) * 2011-06-30 2013-01-02 韦伯斯特生物官能(以色列)有限公司 具有可变弓形远侧段的导管
CN105012009A (zh) * 2014-04-22 2015-11-04 上海微创电生理医疗科技有限公司 一种肾动脉射频消融电极导管
CN105534595A (zh) * 2014-10-31 2016-05-04 四川锦江电子科技有限公司 一种消融电极
CN104605930A (zh) * 2014-12-29 2015-05-13 上海魅丽纬叶医疗科技有限公司 一种螺旋结构的射频消融导管及其设备

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116196086A (zh) * 2021-12-31 2023-06-02 融和医疗科技(浙江)有限公司 一种具有稳定输送功能的消融装置
CN115414108A (zh) * 2022-08-12 2022-12-02 洲瓴(上海)医疗器械有限公司 直线型脉冲消融装置
CN115804636A (zh) * 2022-12-20 2023-03-17 杭州睿笛生物科技有限公司 一种适用于外科房颤消融的脉冲电场消融夹
CN115886986A (zh) * 2022-12-20 2023-04-04 杭州睿笛生物科技有限公司 一种外科房颤消融的脉冲电场消融笔
CN121287282A (zh) * 2025-10-29 2026-01-09 北京搏芯医疗科技有限公司 一种脉冲消融装置

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