CN109330680A - Magnetic compatible dipole microwave ablation needle - Google Patents
Magnetic compatible dipole microwave ablation needle Download PDFInfo
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- CN109330680A CN109330680A CN201811474209.6A CN201811474209A CN109330680A CN 109330680 A CN109330680 A CN 109330680A CN 201811474209 A CN201811474209 A CN 201811474209A CN 109330680 A CN109330680 A CN 109330680A
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- needle
- microwave ablation
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- 238000002679 ablation Methods 0.000 title claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 38
- 239000004020 conductor Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 206010028980 Neoplasm Diseases 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 8
- 238000001356 surgical procedure Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 239000000696 magnetic material Substances 0.000 abstract description 3
- 238000002595 magnetic resonance imaging Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 210000001519 tissue Anatomy 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
-
- 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1869—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument interstitially inserted into the body, e.g. needles
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
本发明公开了一种磁兼容的偶极子微波消融针，其零件全部为无磁材料，可安全用于磁共振成像引导下的微波消融微创介入手术，磁共振对人体无电离辐射，成像质量好，可有效提高手术成功率；同时，本方案采用偶极子设计，有效消除消融过程中针管尾部余热问题，得到球形消融区域，可最大效率消融肿瘤，减轻手术过程中对人体正常组织的损伤，并且该结构易于制作，可方便实现。
The invention discloses a magnetically compatible dipole microwave ablation needle. Its parts are all made of non-magnetic materials, which can be safely used for microwave ablation and minimally invasive interventional surgery guided by magnetic resonance imaging. Good quality can effectively improve the success rate of surgery; at the same time, this scheme adopts dipole design, which can effectively eliminate the problem of residual heat at the end of the needle tube during the ablation process, and obtain a spherical ablation area, which can ablate tumors with maximum efficiency and reduce the damage to normal human tissues during the operation. damage, and the structure is easy to manufacture and can be easily realized.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to treats a kind of compatible round ablation microwave of magnetic of tumour
Needle.
Background technique
Minimally invasive intervention operation is small to patient trauma, restores fast, is received by many patients.Wherein, the microwave of image guidance
Ablation is a kind of minimally invasive intervention operation of effectively treatment tumour.Present most tumors microwave ablation is drawn in CT or ultrasound
Lead it is lower microwave melt needle percutaneous puncture is entered into body foci organization center region, microwave is given off by microwave melt needle front end and is made
Perienchyma is constantly warming up to 52 DEG C or more, causes tissue coagulation downright bad.
However, using CT to guide as image in surgical procedure, there is ionising radiation to patient and doctor, harm is big；Ultrasound
Image resolution ratio is low, is unfavorable for judging tumor region edge.Guide of magnetic resonant image technology can overcome the disadvantage of CT, ultrasound, tool
There are many advantages, such as: no ionising radiation, image resolution ratio is high, soft tissue contrast is high, multi-faceted imaging.But magnetic resonance
Require microwave melt needle that there is magnetic compatibility under environment, existing majority microwave melt needles not meet demand limits magnetic resonance
The development of the tumor microwave ablation of guidance.
Secondly, tumor tissues are normally close to spherical shape, in order in the case where not injuring normal tissue, the kill of maximal efficiency
Tumor tissues, the radiation areas of microwave needle are answered close to spherical shape.But meet demand, ablation areas be not more for existing microwave melt needle
For prolate ellipsoid shape.
Disappear in conclusion designing one kind and can use and generate the microwave of spherical ablation zone safely under magnetic resonance
Melt needle, is urgent problem.
Summary of the invention
In view of this, the dipole microwave melt needle compatible the present invention provides a kind of magnetic, solves above-mentioned technical problem.Both
It can be used safely under magnetic resonance, and obtain spherical ablation shape.
To achieve the above object, the invention provides the following technical scheme:
A kind of dipole microwave melt needle that magnetic is compatible, comprising: syringe needle, needle tubing, coaxial cable, metal column and becket；
The coaxial cable includes inner conductor, outer conductor and the insulating layer of centre；
The metal column is set in the hollow middle portion of the syringe needle, and the metal column is connected to the inner conductor, as
One end of dipole microwave melt needle；
The tail portion of the syringe needle is syringe needle step, and the needle tubing is set in the coaxial cable and the syringe needle step, institute
It states syringe needle step outer wall to be fixed together with the needle interior wall, the metal ring is loaded on the coaxial cable and the needle tubing
Between, the becket is for being connected the outer conductor and the needle tubing, so that the needle tubing and the syringe needle step were fixed
The other end of this section of needle tubing as dipole microwave melt needle.
Preferably, the length of the syringe needle step is a quarter effective wavelength, effective wavelength are as follows:
Wherein, c is the velocity of wave in vacuum, and f is used microwave frequency, ∈rThe relative dielectric constant of medium is passed for wave.
Preferably, the material of the syringe needle is nonmagnetic.
Preferably, the needle tubing is no magnetic conductive metal material.
Preferably, the needle tubing outer wall, which has, does not bond structure.
Preferably, the coaxial cable is no magnetoelectricity cable；The outer conductor front end removing, exposes the insulating layer, described
The removing of insulating layer front end, exposes the inner conductor.
Preferably, the metal column is cylindrical shape, and is punched at one end, with the inner conductor seamless welding.
Preferably, the metal column is no magnetic conductance electric metal, and the becket is no magnetic conductance electric metal.
Preferably, further includes: be welded in the radio-frequency joint of the coaxial cable tail portion, and the hand of the package radio-frequency joint
Handle.
Preferably, the radio-frequency joint is no magnetic conductive metal material.
It can be seen from the above technical scheme that the dipole microwave melt needle that magnetic provided by the invention is compatible, brings
Have the beneficial effect that
1, all non-magnetic materials of part, can be used safely in it is mri guided under the minimally invasive intervention hand of microwave ablation
Art, to human body without ionising radiation, good imaging quality can effectively improve success rate of operation for magnetic resonance；
2, it is designed using dipole, effectively eliminates needle tubing tail portion waste heat problem in ablation procedure, obtain spherical ablation zone,
Can maximal efficiency ablated tumor, mitigate damage to human normal tissue in surgical procedure, and the structure is easy to make, can be square
Just it realizes.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the compatible dipole microwave melt needle of magnetic provided in an embodiment of the present invention.
Wherein, 1 is syringe needle, and 1-1 is in the middle part of syringe needle, and 1-2 is syringe needle step；2 be needle tubing；3-1 is the inner conductor of the coaxial cable,
3-2 is coaxial cable insulated layer, and 3-3 is coaxial cable outer conductor；4 be metal column, and 5 be becket, and 6 be radio-frequency joint, and 7 be hand
Handle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The compatible dipole microwave melt needle of magnetic provided in an embodiment of the present invention, comprising: syringe needle 1, needle tubing 2, coaxial cable,
Metal column 4 and becket 5, structure is referred to shown in Fig. 1；
Wherein, coaxial cable includes the insulating layer 3-2 of inner conductor 3-1, outer conductor 3-3 and centre；
Metal column 4 is set in the hollow middle portion of syringe needle 1, and metal column 4 is connected to inner conductor 3-1, as dipole microwave
One end of ablation needle；Syringe needle 1 uses insulating materials；
The tail portion of syringe needle 1 is syringe needle step 1-2, and needle tubing 2 is set in coaxial cable and syringe needle step 1-2, syringe needle step 1-2
Outer wall is fixed together with 2 inner wall of needle tubing, easy to assembly；Becket 5 is set between coaxial cable and needle tubing 2, and becket 5 is used
In conducting outer conductor 3-3 and needle tubing 2, so that this section of needle tubing 2 and syringe needle step 1-2 fixed needle tubing disappears as dipole microwave
Melt the other end of needle.
It can be seen from the above technical scheme that the dipole microwave melt needle that magnetic provided in an embodiment of the present invention is compatible,
It is designed using dipole, effectively eliminates needle tubing tail portion waste heat problem in ablation procedure, obtain spherical ablation zone, it can maximal efficiency
Ablated tumor mitigates the damage in surgical procedure to human normal tissue, and the structure is easy to make, and can facilitate realization.
Specifically, the length of syringe needle step 1-2 is a quarter effective wavelength, effective wavelength are as follows:
Wherein, c is the velocity of wave in vacuum, and f is used microwave frequency, ∈rThe relative dielectric constant of medium is passed for wave.
So set, to optimize the dipole structure of this programme, it is more effective to eliminate needle tubing tail portion waste heat problem in ablation procedure, it is managed
The spherical ablation zone thought.
In order to advanced optimize above-mentioned technical solution, the material of syringe needle 1 is nonmagnetic, can be used safely in magnetic resonance imaging and draw
The minimally invasive intervention operation of microwave ablation under leading, magnetic resonance to human body without ionising radiation, good imaging quality, can effectively improve operation at
Power.Similar, needle tubing 2 is no magnetic conductive metal material, can be copper pipe, titanium alloy tube etc.；Coaxial cable 3 is no magnetoelectricity cable；
Metal column 4 is no magnetic conductance electric metal, can be copper, silver etc.；Becket 5 is no magnetic conductance electric metal, can be copper, silver etc..
In the present embodiment, 2 outer wall of needle tubing, which has, does not bond structure, to prevent the viscous glutinous tissue in needle tubing surface in ablation procedure.
Specifically, not bonding structure is the one layer of Teflon long paint sprayed on its surface.
Preferably, the front end outer conductor 3-3 of coaxial cable 3 is removed, expose insulating layer 3-2, the stripping of the front end insulating layer 3-2
From exposing inner conductor 3-1, with feature contacts corresponding to other cooperation, structure is referred to shown in Fig. 1.
Specifically, metal column 4 is cylindrical shape, and punch at one end, with inner conductor 3-1 seamless welding, guarantees that the two is filled
Distribution is closed, more preferably one end as dipole microwave melt needle.
The compatible dipole microwave melt needle of magnetic provided in an embodiment of the present invention, further includes:
It is welded in the radio-frequency joint 6 of coaxial cable tail portion, for connecting with external microwave ablatograph；
It with the handle 7 of package radio-frequency joint 6, is operated convenient for doctor, structure is referred to shown in Fig. 1.
In order to advanced optimize above-mentioned technical solution, radio-frequency joint 6 is no magnetic conductive metal material, has magnetic compatible
Property, the tumor microwave ablation of guided by magnetic resonance can be used safely in.
This programme is described further combined with specific embodiments below:
A kind of compatible dipole microwave melt needle of magnetic provided in an embodiment of the present invention, comprising: syringe needle 1, needle tubing 2, coaxially
Cable 3, metal column 4, becket 5, radio-frequency joint 6, handle 7.The front end outer conductor 3-3 of the coaxial cable 3 is removed, and is exposed exhausted
Edge layer 3-2, the front end insulating layer 3-2 removing, exposes inner conductor 3-1, inner conductor 3-1 is with 4 seamless welding of metal column in together；Coaxially
The bottom of to inside 3 front end insertion needle 1 of cable；Becket 5 is inserted in the terminal surface of coaxial cable 3 to syringe needle step 1-2；2 sets of needle tubing
Enter the front end face of coaxial cable 3 to syringe needle step 1-2, syringe needle step 1-2 is fixed together with 2 inner wall of needle tubing；Radio-frequency joint 6 welds
It is connected to 3 tail portion of coaxial cable, for connecting with external microwave ablatograph；Handle 7 wraps up radio-frequency joint 6, operates convenient for doctor.
Preferably, 1 material of syringe needle is nonmagnetic and hard, can be zirconium oxide material etc.；1 front of syringe needle is solid circular cone
Shape, convenient for puncturing；It is 1-1 hollow cylinder in the middle part of syringe needle, outer diameter is identical as 2 outer diameter of needle tubing, and internal diameter is slightly larger than outside metal column 4
Diameter, length are greater than metal column length 4；1 tail portion of syringe needle is syringe needle step 1-2, and outer diameter is slightly less than warp, internal diameter in needle tubing 2 and is slightly larger than
4 diameter of metal column, length are a quarter effective wavelength, effective wavelength are as follows:
Wherein, c is the velocity of wave in vacuum, and f is used microwave frequency, ∈rThe relative dielectric constant of medium is passed for wave.
Preferably, the needle tubing 2 is no magnetic conductive metal material, can be copper pipe, titanium alloy tube etc., the spraying of 2 surface of needle tubing
One layer of Teflon long paint prevents the viscous glutinous tissue in needle tubing surface in ablation procedure.
Preferably, the coaxial cable 3 is no magnetoelectricity cable, includes inner conductor 3-1, insulating layer 3-2, outer conductor 3-3, diameter
Equal to 4 diameter of metal column.
Preferably, the metal column 4 is no magnetic conductance electric metal, can be copper, silver etc., metal column 4 is cylindrical shape, and one
End punching, and the inner conductor of the coaxial cable 3-1 seamless welding, one end as dipole microwave melt needle.
Preferably, the becket 5 is no magnetic conductance electric metal, can be copper, silver etc., outer diameter is slightly less than 2 internal diameter of needle tubing, internal diameter
Slightly larger than 3 diameter of coaxial cable, for coaxial cable outer conductor 3-3 and needle tubing 2 to be connected, so that needle tubing 2 and syringe needle step 1-2 are solid
The other end of this section of fixed needle tubing as dipole microwave melt needle can effectively make microwave melt needle generate spherical ablation area
Domain avoids microwave from radiating along needle tubing 2 and generates heat calcination normal tissue.
Preferably, the radio-frequency joint 6 is no magnetic conductive metal material.
In conclusion the dipole microwave melt needle that magnetic provided by the invention is compatible, all non-magnetic materials of part can
Be used safely in it is mri guided under microwave ablation minimally invasive intervention operation, magnetic resonance to human body without ionising radiation, at image quality
It measures, success rate of operation can be effectively improved；Meanwhile this programme is designed using dipole, effectively eliminates needle tubing tail in ablation procedure
Portion's waste heat problem, obtains spherical ablation zone, can maximal efficiency ablated tumor, mitigate surgical procedure in human normal tissue
Damage, and the structure is easy to make, and can facilitate realization.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474209.6A CN109330680A (en) | 2018-12-04 | 2018-12-04 | Magnetic compatible dipole microwave ablation needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474209.6A CN109330680A (en) | 2018-12-04 | 2018-12-04 | Magnetic compatible dipole microwave ablation needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109330680A true CN109330680A (en) | 2019-02-15 |
Family
ID=65320168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811474209.6A Pending CN109330680A (en) | 2018-12-04 | 2018-12-04 | Magnetic compatible dipole microwave ablation needle |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109953824A (en) * | 2019-04-25 | 2019-07-02 | 南京康友医疗科技有限公司 | A kind of microwave ablation needle body, microwave melt needle and microwave ablation method |
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| CN104323856A (en) * | 2014-11-11 | 2015-02-04 | 南京维京九洲医疗器械研发中心 | Manufacturing method of non-magnetic water-cooled microwave ablation needle |
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| CN106109011A (en) * | 2016-08-30 | 2016-11-16 | 北京天助畅运医疗技术股份有限公司 | A kind of blood vessel Microwave Coagulation water-cooled conduit |
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| CN107753104A (en) * | 2017-12-01 | 2018-03-06 | 中国科学技术大学 | Compatible water-cooled microwave ablation needle of a kind of magnetic and preparation method thereof |
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2018
- 2018-12-04 CN CN201811474209.6A patent/CN109330680A/en active Pending
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| （美）达米安•E.杜佩 等: "《影像引导下的肿瘤治疗 一种多学科治疗方法》", 31 August 2018, 辽宁科学技术出版社, pages: 182 * |
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| CN109953824A (en) * | 2019-04-25 | 2019-07-02 | 南京康友医疗科技有限公司 | A kind of microwave ablation needle body, microwave melt needle and microwave ablation method |
| CN109953824B (en) * | 2019-04-25 | 2023-05-05 | 南京康友医疗科技有限公司 | Microwave ablation needle body, microwave ablation needle and microwave ablation method |
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Application publication date: 20190215 |