CN105455897A - Flexible radiofrequency ablation electrode - Google Patents
Flexible radiofrequency ablation electrode Download PDFInfo
- Publication number
- CN105455897A CN105455897A CN201511022154.1A CN201511022154A CN105455897A CN 105455897 A CN105455897 A CN 105455897A CN 201511022154 A CN201511022154 A CN 201511022154A CN 105455897 A CN105455897 A CN 105455897A
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- CN
- China
- Prior art keywords
- flexible pipe
- pin
- sub
- flexible
- opening
- 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.)
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Classifications
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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
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- 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
- A61B2018/1465—Deformable electrodes
Abstract
The invention provides a flexible radiofrequency ablation electrode. A traditional hard direct radiofrequency ablation electrode is designed into the flexible tube type radiofrequency ablation electrode. The flexible radiofrequency ablation electrode is characterized in that due to the facts that a flexible tube is integrally made of a plastic material with the high toughness and a metal needle is not adopted at the tip end of the flexible tube, the tip end of the flexible tube also can be bent by a hose mirror when the flexible radiofrequency ablation electrode is cooperatively used with the hose mirror, and the turning radius of the needle tip is decreased to prevent the needle tip from pricking internal tissue of the bronchus. When the flexible radiofrequency ablation electrode is used, the flexible radiofrequency ablation electrode stretches into the bronchus from the oral cavity or the nasal cavity by being matched with a bronchoscope, and after the flexible radiofrequency ablation electrode reaches a lesion, a sub needle stretches out to perform ablation on lesion tissue.
Description
Technical field
The present invention relates to a kind of armarium, particularly relating to a kind of radio-frequency ablation electrode for melting pathological tissues in bronchus.
Background technology
At present, to when carrying out radiofrequency ablation therapy by flexible radio frequency ablating electrode to the illing tissue in pulmonary, after ablating electrode and piercing needle need to thrust bronchial wall, just reach and arrive at target diseased tissue and carry out with radiofrequency ablation therapy.Over the course for the treatment of, the power frequency height of flexible radio frequency ablating electrode is to (> 100kHz) during certain value, charged ion motion in target diseased tissue can be caused, namely the temperature more than 60 DEG C is produced, to make the necrocytosis of target diseased tissue, thus reach the object for the treatment of.
And for the illing tissue of bronchus inside, when being treated by traditional ablating electrode, be subject to the impact of bronchus labyrinth, complicated to the location of illing tissue, operating difficulty is large, and position is once prick partially, can damage, bring larger misery to patient to bronchus and human body surface skin simultaneously.
In prior art, had hose radio-frequency ablation electrode, this hose radio-frequency ablation electrode adopts the lower Hose Jacket of hardness factor in the periphery of radio-frequency electrode and sub-pin, and adopts metal needle at end.In the bronchial process of insertion, when especially will enter the larger bronchus of turning radian, metal needle is difficult to realization and turns to, and base friend may stab bronchus.
Summary of the invention
The object of the present invention is to provide one flexible radio frequency ablating electrode, this flexible radio frequency ablating electrode and bronchoscope with the use of, stretch in bronchus by oral cavity or nasal cavity, illing tissue melted.
In order to realize above object, the invention provides a kind of flexible radio frequency ablating electrode, comprising flexible pipe and plug-in part; The Rockwell hardness of flexible pipe is greater than 90HRR and is less than 130HRR;
Wire, radio-frequency electrode, N root pin through in flexible pipe, and can with flexible pipe relative movement in the axial direction, one end of wire is connected with the insertion end of plug-in part handle, and the other end is connected with N root pin with radio-frequency electrode respectively; N be more than or equal to 2 integer;
The degree of depth that wire stretches into flexible pipe is different, makes radio-frequency electrode and sub-pin stretch out outside flexible pipe opening or in income opening, when sub-pin stretches out the opening of flexible pipe, launches to different directions;
The opening that flexible pipe stretches out sub-pin is sharp mouth shape.
As preferably, flexible pipe is made up of poly ether ether ketone plastic.
As preferably, also comprise outer sleeve; The leading section of outer sleeve connects the link of flexible pipe;
Plug-in part is inserted in outer sleeve; Be provided with between plug-in part and outer sleeve and regulate radio-frequency electrode and sub-pin stretch out or take in the axially displaced assembly of flexible pipe opening.
As preferably, axially displaced assembly is piston type displaceable members.
As preferably, axially displaced assembly is spiral displaceable members.
As preferably, outer sleeve is also provided with perfusing hole;
Liquid flows out from opening along flexible pipe after injecting from perfusing hole.
As preferably, sub-pin is provided with the hot sensory package for detecting sub-pin temperature.
As preferably, sub-pin launches to form umbrella to different directions equably.
As preferably, when sub-pin stretches out the opening of flexible pipe completely, the deployment diameter of the sub-pin of umbrella is more than or equal to 15mm and is less than or equal to 35mm, launches radial height and is more than or equal to 7mm and is less than or equal to 18mm.
As preferably, when flexible pipe opening all taken in by sub-pin, the needle point of sub-pin and the bottom of flexible pipe opening flush.
In the present invention, be the ablating electrode of flexible pipe type by probe design firmly straight in prior art, this ablating electrode can be goed deep in bronchus by nasal cavity or oral cavity, and can enter deep along bronchus in bronchus, through site of disease melts illing tissue.Meanwhile, this radio-frequency ablation electrode have employed not only has certain degree of hardness, possesses the plastic material of certain toughness simultaneously, makes flexible pipe of the present invention avoid adopting the ferrule of hard to penetrate diseased region, effectively prevents opening from stabbing inner bronchial wall.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of the present invention.
Fig. 2 is the state diagram that the first embodiment neutron pin of the present invention launches.
Fig. 3 is the structural representation of piston type displaceable members in the second embodiment of the present invention.
Fig. 4 is the structural representation of spiral displaceable members in the second embodiment of the present invention.
Fig. 5 is the structural representation of the third embodiment of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiments of the present invention are explained in detail.
For solving the problems of the technologies described above, the first embodiment of the present invention provides a kind of flexible radio frequency ablating electrode, comprises flexible pipe 1 and plug-in part 2; The Rockwell hardness of flexible pipe 1 is greater than 90HRR and is less than 130HRR;
Wire 5, radio-frequency electrode 4, N root pin 3 through in flexible pipe 1, and can with flexible pipe 1 relative movement in the axial direction, one end of wire 5 is connected with the insertion end of plug-in part 2 handle, and the other end is connected with N root pin 3 with radio-frequency electrode 4 respectively; N be more than or equal to 2 integer;
The degree of depth that wire 5 stretches into flexible pipe 1 is different, makes radio-frequency electrode 4 and sub-pin 3 stretch out outside flexible pipe 1 opening or in income opening, when sub-pin 3 stretches out the opening of flexible pipe 1, launches to different directions;
The opening that flexible pipe 1 stretches out sub-pin 3 is sharp mouth shape.
In the present embodiment, be flexible pipe type by ablation electrode designs, this ablating electrode can be goed deep in bronchus by nasal cavity or oral cavity, and can enter deep along bronchus in bronchus, through site of disease melts illing tissue.
The existing radio-frequency ablation electrode for melting the inner pathological tissues of bronchus at present, the rubber hose that adopts as hose body more, and the end of flexible pipe arranges metal needle logical in, for penetrating pathological tissues.Utilize this flexible pipe radio-frequency ablation electrode with metal needle, in the bronchial process of insertion, especially when turning amplitude is larger, be easy to cause damage to inner bronchial wall.And in the present invention, this flexible pipe entirety have employed Rockwell hardness and is greater than 90HRR and the plastic tube being less than 130HRR, when the power that the opening position of this flexible pipe is produced when being subject to bronchoscope and controlling to turn to, realize bending effect, solve syringe needle position in prior art and turn to difficult technical characteristic.Meanwhile, this flexible pipe possesses certain degree of hardness, can realize technique effect flexible pipe being penetrated pathological tissues.In the present embodiment, flexible pipe 1 is made by poly ether ether ketone plastic, and its diameter is more than or equal to 1mm and is less than or equal to 2mm, and min. turning radius is 20mm.
In the present embodiment, as shown in Figure 1, the length of flexible pipe 1 is less than the total length of sub-pin and wire.In use, sub-pin and radio-frequency electrode are regained in the opening of flexible pipe 1, when arriving diseased region, the opening controlling flexible pipe 1 inserts pathological tissues, and now hands catches the end of flexible pipe, another hand propelled plug-in part 2, the end of flexible pipe is maintained an equal level mutually with the terminal position of wire, sub-pin 3 and radio-frequency electrode 4 can be realized to penetrate in pathological tissues, then plug-in part is connected with radiofrequency melting instrument, just can melt pathological tissues.
In order to monitor the temperature of sub-pin 3 in real time, on sub-pin 3, a hot sensory package can be installed.In the present embodiment, this hot sensory package is thermocouple, when sub-pin 3 stretches out the opening of flexible pipe 1 completely, this thermocouple is positioned at sub-pin 3 near the position of the opening of flexible pipe 1, this thermocouple by the wire that is positioned at flexible pipe 1 by the Temperature Feedback that detects to radio-frequency therapeutic equipment, radio-frequency therapeutic equipment demonstrates the temperature of sub-pin 3.
In order to obtain better ablation effect, in the present embodiment, 8 root pins 3 launch to eight directions equably, form a umbrella-shaped structure, as shown in Figure 2, namely often adjacent two root pins 3 towards angle equal, make sub-pin 3 be evenly distributed in pathological tissues, not only increase sub-pin 3 and the contact area of pathological tissues, sub-pin can be enable to melt pathological tissues equably simultaneously.
In the present embodiment, when the opening of flexible pipe 1 all taken in by sub-pin 3, the needle point of sub-pin 3 and the bottom of flexible pipe 3 opening flush.By this kind of design, the opening that not only can not have influence on flexible pipe 1 penetrates the feel of pathological tissues, can also promote the length that sub-pin 3 stretches out the opening of flexible pipe 1.
In the present embodiment, when sub-pin 3 stretches out flexible pipe 1 completely, the deployment diameter of the sub-pin 3 of umbrella is more than or equal to 15mm and is less than or equal to 35mm, launches radial height and is more than or equal to 7mm and is less than or equal to 18mm.By the deployment diameter of sub-for umbrella pin and expansion radial height being limited, when reality uses, carry out chooser pin development size according to the size of diseased region.
The second embodiment of the present invention provides a kind of flexible radio frequency ablating electrode, and the second embodiment is the improvement of the first embodiment, and its difference is, in the second embodiment, also comprises outer sleeve 6; The leading section of outer sleeve 6 connects the link of flexible pipe 1; Plug-in part 2 is inserted in outer sleeve 6; Be provided with between plug-in part 2 and outer sleeve 6 and regulate radio-frequency electrode and sub-pin 3 to stretch out or take in the axially displaced assembly of flexible pipe 1.
In the present embodiment, by designing an outer sleeve 6, the leading section of outer sleeve 6 is connected with flexible pipe 1, and be provided with between plug-in part 2 and outer sleeve 6 and regulate radio-frequency electrode 4 and sub-pin 3 to stretch out or take in the axially displaced assembly of flexible pipe 1, make the present invention when controlling radio-frequency electrode 4 and sub-pin 3 stretches, can lifting operation feel.Preferably, a handle can also be set on plug-in part 2 or outer sleeve 6, lifting operation feel.In addition, can also a spacing draw-in groove be set between plug-in part 2 and outer sleeve 6, makes cannot depart from completely between plug-in part 2 and outer sleeve 6, prevent because maloperation extracts out the flexible pipe 1 such as wire 5, sub-pin 3.
In the present embodiment, this axially displaced assembly can be piston type displaceable members, as shown in Figure 3, also can be spiral displaceable members, as shown in Figure 4.Piston type displaceable members, only needs to catch outer sleeve 6, and promoting or pull out plug-in part 2 can release sub-pin 3 or take in the opening of flexible pipe 1.And spiral displaceable members, catch outer sleeve 6, clockwise or be rotated counterclockwise plug-in part 2, sub-pin 3 can be released or taken in the opening of flexible pipe 1.
The third embodiment of the present invention relates to a kind of flexible radio frequency ablating electrode, and the third embodiment is the improvement of the second embodiment, and its difference is, in the third embodiment, outer sleeve 6 is also provided with perfusing hole 7, as shown in Figure 5; Liquid flows out along the opening of flexible pipe 1 from flexible pipe 1 after injecting from perfusing hole 7.
In the present embodiment, by designing a perfusing hole 7 on outer sleeve 6, two functions can be realized.
1, when melting, ionization liquid can be injected by this perfusing hole 7, can promote and melt efficiency;
2, after usage, ethanol can be injected by this perfusing hole 7 or distilled water carries out disinfection and cleans.
The respective embodiments described above realize specific embodiments of the invention, persons of ordinary skill in the art may appreciate that and in actual applications, can do various change in the form and details to it, and without departing from the spirit and scope of the present invention.
Claims (10)
1. a flexible radio frequency ablating electrode, is characterized in that, comprises flexible pipe (1) and plug-in part (2); The Rockwell hardness of described flexible pipe (1) is greater than 90HRR and is less than 130HRR;
Wire (5), radio-frequency electrode (4), N root pin (3) are through in described flexible pipe (1), and can with described flexible pipe (1) relative movement in the axial direction, one end of described wire (5) is connected with the insertion end of described plug-in part (2) handle, and the other end is connected with N root pin (3) with described radio-frequency electrode (4) respectively; Described N be more than or equal to 2 integer;
The degree of depth that described wire (5) stretches into described flexible pipe (1) is different, make described radio-frequency electrode (4) and sub-pin (3) stretch out outside described flexible pipe (1) opening or take in opening, when described sub-pin (3) stretches out the opening of described flexible pipe (1), launch to different directions;
The opening that described flexible pipe (1) stretches out sub-pin (3) is sharp mouth shape.
2. flexible radio frequency ablating electrode according to claim 1, is characterized in that, described flexible pipe (1) is made up of poly ether ether ketone plastic.
3. flexible radio frequency ablating electrode according to claim 1, is characterized in that, also comprises outer sleeve (6); The leading section of described outer sleeve (6) connects the link of described flexible pipe (1);
Described plug-in part (2) is inserted in described outer sleeve (6); Be provided with between described plug-in part (2) and outer sleeve (6) and regulate described radio-frequency electrode and sub-pin (3) stretch out or take in the axially displaced assembly of described flexible pipe (1) opening.
4. flexible radio frequency ablating electrode according to claim 3, is characterized in that, described axially displaced assembly is piston type displaceable members.
5. flexible radio frequency ablating electrode according to claim 3, is characterized in that, described axially displaced assembly is spiral displaceable members.
6. flexible radio frequency ablating electrode according to claim 3, is characterized in that, described outer sleeve (6) is also provided with perfusing hole (7);
Liquid flows out from opening along described flexible pipe (1) after injecting from described perfusing hole (7).
7. flexible radio frequency ablating electrode according to claim 1, is characterized in that, described sub-pin (3) is provided with the hot sensory package for detecting described sub-pin (3) temperature.
8. flexible radio frequency ablating electrode according to claim 1, is characterized in that, described sub-pin (3) launches to form umbrella to different directions equably.
9. flexible radio frequency ablating electrode according to claim 8, it is characterized in that, when described sub-pin (3) stretches out the opening of described flexible pipe (1) completely, the deployment diameter of the sub-pin of described umbrella (3) is more than or equal to 15mm and is less than or equal to 35mm, launches radial height and is more than or equal to 7mm and is less than or equal to 18mm.
10. flexible radio frequency ablating electrode according to claim 1, it is characterized in that, when described sub-pin (3) all takes in the opening of described flexible pipe (1), the needle point of described sub-pin (3) and the bottom of described flexible pipe (1) opening flush.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810255528.1A CN108309441A (en) | 2015-12-30 | 2015-12-30 | Flexible radio frequency ablating electrode |
| CN201511022154.1A CN105455897A (en) | 2015-12-30 | 2015-12-30 | Flexible radiofrequency ablation electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022154.1A CN105455897A (en) | 2015-12-30 | 2015-12-30 | Flexible radiofrequency ablation electrode |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810255528.1A Division CN108309441A (en) | 2015-12-30 | 2015-12-30 | Flexible radio frequency ablating electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105455897A true CN105455897A (en) | 2016-04-06 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810255528.1A Pending CN108309441A (en) | 2015-12-30 | 2015-12-30 | Flexible radio frequency ablating electrode |
| CN201511022154.1A Pending CN105455897A (en) | 2015-12-30 | 2015-12-30 | Flexible radiofrequency ablation electrode |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810255528.1A Pending CN108309441A (en) | 2015-12-30 | 2015-12-30 | Flexible radio frequency ablating electrode |
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| Country | Link |
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| CN (2) | CN108309441A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175927A (en) * | 2016-07-29 | 2016-12-07 | 江苏翊博雷明医疗科技有限公司 | A kind of hemostasis electrode |
| CN107260300A (en) * | 2017-07-20 | 2017-10-20 | 常州朗合医疗器械有限公司 | Radio frequency ablation catheter and system |
| CN114305656A (en) * | 2021-11-15 | 2022-04-12 | 上海市胸科医院 | Magnetic navigation radio frequency ablation electrode and system |
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| US5855576A (en) * | 1995-03-24 | 1999-01-05 | Board Of Regents Of University Of Nebraska | Method for volumetric tissue ablation |
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| CN1810318A (en) * | 2005-12-27 | 2006-08-02 | 重庆大学 | Bundling electrode with integrated positive pole and negative pole of shape memory alloy |
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| CN103519889A (en) * | 2013-10-10 | 2014-01-22 | 迈德医疗科技（上海）有限公司 | Radiofrequency ablation electrode assembly with double umbrella-shaped probe layers |
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| CN205459028U (en) * | 2015-12-30 | 2016-08-17 | 迈德医疗科技（上海）有限公司 | Flexible radiofrequency ablation electrode |
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2015
- 2015-12-30 CN CN201810255528.1A patent/CN108309441A/en active Pending
- 2015-12-30 CN CN201511022154.1A patent/CN105455897A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5855576A (en) * | 1995-03-24 | 1999-01-05 | Board Of Regents Of University Of Nebraska | Method for volumetric tissue ablation |
| US5672173A (en) * | 1995-08-15 | 1997-09-30 | Rita Medical Systems, Inc. | Multiple antenna ablation apparatus and method |
| US6231570B1 (en) * | 1997-05-15 | 2001-05-15 | Hosheng Tu | Electrode catheter system for tissue ablation |
| US6997925B2 (en) * | 1997-07-08 | 2006-02-14 | Atrionx, Inc. | Tissue ablation device assembly and method for electrically isolating a pulmonary vein ostium from an atrial wall |
| US20020022864A1 (en) * | 2000-06-07 | 2002-02-21 | Mahvi David M. | Multipolar electrode system for radiofrequency ablation |
| US20050065509A1 (en) * | 2003-09-22 | 2005-03-24 | Scimed Life Systems, Inc. | Flat electrode arrays for generating flat lesions |
| US20140336639A1 (en) * | 2004-10-28 | 2014-11-13 | Boston Scientific Scimed, Inc. | Ablation probe with flared electrodes |
| CN2925405Y (en) * | 2005-12-06 | 2007-07-25 | 王洪奎 | Multi-pin tumor radiofrequency melting electrode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175927A (en) * | 2016-07-29 | 2016-12-07 | 江苏翊博雷明医疗科技有限公司 | A kind of hemostasis electrode |
| CN107260300A (en) * | 2017-07-20 | 2017-10-20 | 常州朗合医疗器械有限公司 | Radio frequency ablation catheter and system |
| CN114305656A (en) * | 2021-11-15 | 2022-04-12 | 上海市胸科医院 | Magnetic navigation radio frequency ablation electrode and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108309441A (en) | 2018-07-24 |
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Application publication date: 20160406 |
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