CN205758714U - For the antenna module of microwave ablation and the microwave melt needle using it - Google Patents
For the antenna module of microwave ablation and the microwave melt needle using it Download PDFInfo
- Publication number
- CN205758714U CN205758714U CN201620127692.0U CN201620127692U CN205758714U CN 205758714 U CN205758714 U CN 205758714U CN 201620127692 U CN201620127692 U CN 201620127692U CN 205758714 U CN205758714 U CN 205758714U
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- CN
- China
- Prior art keywords
- antenna module
- microwave
- soft magnetic
- magnetic ferrite
- thin film
- 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
- A61B18/18—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
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
- A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
-
- 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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—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
- A61B18/18—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
- A61B2018/183—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 characterised by the type of antenna
- A61B2018/1853—Monopole antennas
-
- 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
- A61B2018/1892—Details of electrical isolations of the antenna
Abstract
A kind of antenna module for microwave ablation, including cooling-water duct, coaxial line and irradiator, is wherein plated with a circle soft magnetic ferrite thin film at described coaxial line outermost layer.And a kind of microwave melt needle using it.Soft magnetic ferrite thin film of the present utility model can suppress the microwave along coaxial line outer wall reverse transfers effectively, and need not fill stable at radiation area, recirculated water is allowed to enter radiation area, it is possible to effectively to control the temperature of ablation needle head, it is to avoid temperature is too high burns out ablation needle and malpractice.
Description
Technical field
This utility model relates to micro-wave therapeutic equipment technical field, relates more specifically to a kind of antenna for microwave ablation
Assembly and use its microwave melt needle.
Background technology
In recent years, microwave ablation is increasingly becoming one of important treatment means for the treatment of hepatocarcinoma.Microwave ablation be utilize micro-
Ripple is at polar molecule, such as the heat effect in water, makes lesion region moment reach the highest temperature, tissue coagulation, dehydration necrosis, from
And reach the purpose for the treatment of.
Saying from microwave antenna design, the ablation needle of main flow has two kinds in the market: one is to be provided without chokes technology
Melt antenna, the Chinese patent application of such as Publication No. CN103142307A is open；Another kind is to use chokes ring (groove)
Melt antenna, the Chinese patent application of such as Publication No. CN104688335A is open, and its agent structure is as shown in Figure 1.
In the case of not taking chokes technology, part microwave " can be escaped backward along the outer surface of coaxial outer conductor
Ease ", thus cause zone of ablation to become elliposoidal.Use melting antenna and effectively suppressing microwave reversely to escape of chokes ring (groove) technology
Ease, it is thus achieved that relatively round zone of ablation, but for the performance of stable chokes ring (groove), need the radiation area at antenna to fill steady to temperature
Fixed high dielectric constant, thus cause recirculated water cannot arrive the head of ablation needle.Needle section temperature is too high easily to be burnt out
Ablation needle, in some instances it may even be possible to cause ablation needle to burst, cause malpractice.
Utility model content
In view of this, the purpose of this utility model is provide a kind of antenna module for microwave ablation and use it
Microwave melt needle.
To achieve these goals, as an aspect of the present utility model, this utility model provides a kind of for micro-
The antenna module that ripple melts, including:
Irradiator, for going out the Microwave emission being used for melting；
Cooling-water duct, for cooling down described irradiator；
Coaxial line, for will microwave generator produce described in be used for the microwave transmission melted to described irradiator；Wherein,
The outermost layer of described coaxial line is formed the choke coil of a soft magnetic ferrite thin film.
Wherein, the relative permeability of described soft magnetic ferrite thin film is more than 50.
Wherein, the material of described soft magnetic ferrite thin film is nickel zinc cobalt ferrites.
Wherein, the length of described soft magnetic ferrite thin film is more than or equal to 2mm.
Wherein, the thickness of described soft magnetic ferrite thin film is between 0.05～0.1mm scope.
Wherein, described irradiator be copper " cap " or coaxial line foremost.
Wherein, described irradiator is copper " cap ", and the distributing point of described irradiator is to described copper " cap " distance foremost
And to the difference of distance of described soft magnetic ferrite thin film between 0～2mm.
Wherein, it is not filled by high dielectric constant around described soft magnetic ferrite thin film.
Wherein, described high dielectric constant is zirconium oxide.
As another aspect of the present utility model, this utility model additionally provides a kind of microwave melt needle, described microwave
Ablation needle includes antenna module as above.
Understanding based on technique scheme, antenna module of the present utility model and microwave melt needle have following useful effect
Really:
(1) soft magnetic ferrite thin film can suppress the microwave along coaxial line outer wall reverse transfers effectively；
(2) soft magnetic ferrite chokes technology is used, it is not necessary to fill stable at radiation area, it is allowed to recirculated water enters spoke
Penetrate district, it is possible to effectively control the temperature of ablation needle head, it is to avoid temperature is too high burns out ablation needle and malpractice.
Accompanying drawing explanation
Fig. 1 is the agent structure schematic diagram of the antenna module for microwave ablation of prior art；
Fig. 2 is the agent structure schematic diagram of the antenna module for microwave ablation of the present utility model；
Fig. 3 and Fig. 4 is to be provided without chokes technology and use two kinds of the soft magnetic ferrite chokes absorptions melting antenna respectively
Field pattern.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is described in further detail.
The utility model discloses a kind of antenna module for microwave ablation, this antenna module includes irradiator, cooling
Aquaporin and coaxial line, wherein irradiator, for going out the Microwave emission being used for melting；Cooling-water duct, for described
Irradiator cools down；Coaxial line, for will microwave generator produce described in be used for the microwave transmission melted to described radiation
Device；The outermost layer of described coaxial line is formed the choke coil of a soft magnetic ferrite thin film.
This soft magnetic ferrite thin film can select high magnetic conductivity soft-magnetic ferrite material, wherein relative to the relative magnetic of vacuum
Conductance is preferably greater than 50, such material such as preferably nickel zinc cobalt soft magnetic ferrite.The shape of this soft magnetic ferrite thin film along with
The profile of coaxial line and change, the most circular, its length is not less than 2mm, preferably 2mm；Thickness is at 0.05mm～0.1mm
Between scope, preferably 0.1mm.As innovative point of the present utility model, it is not filled by any high around this soft magnetic ferrite thin film
Dielectric constant dielectric, such as zirconium oxide etc. are relative to high-dielectric-constant ceramics material more than 25 of the relative dielectric constant of vacuum
Material.
In above-mentioned antenna module, irradiator can be copper " cap ", it is also possible to be directly coaxial line foremost.Work as radiation
When device is copper " cap ", the distributing point of irradiator to copper " cap " distance foremost and the difference of the distance to soft magnetic ferrite thin film
Between 0～2mm, thus after using soft magnetic ferrite chokes, this antenna module is equivalent to symmetrical full-wave dipole antenna, its near field
It is distributed more uniform than dipole antenna.
The invention also discloses a kind of microwave melt needle, wherein include above-mentioned antenna module.
Below in conjunction with the accompanying drawings the technical solution of the utility model is further elaborated explanation.
Fig. 2 is the agent structure schematic diagram of the soft magnetic ferrite antenna module for microwave ablation of the present utility model.As
Shown in figure, in figure, each several part is followed successively by: rustless steel water inlet pipe 1, soft magnetic ferrite thin film ring 2, coaxial outer conductor layer 3, coaxial
Line inner core 4, coaxial line dielectric layer 5, PTFE (politef) water inlet pipe 6, copper " cap " 7, glass fibre outer tube 8, pottery tartar
9.Soft magnetic ferrite thin film ring 2 is fitted tightly on coaxial outer conductor layer 3 by shikishima plating process, itself and coaxial line inner core 4, copper
" cap " 7 and coaxial line part outer conductor together constitute Microwave emission unit.Water inlet pipe is an annular membrane, is enclosed within coaxial line
Outside each several part and copper " cap " 7, and and coaxial line each several part and copper " cap " irradiator 7 between have certain gap, thus this enters
The gap of pipe inner wall allows current to flow through and constitute intake tunnel.Glass fibre outer tube 8, glass fibre it is arranged with outside water inlet pipe
Gap between outer tube 8 and water inlet pipe constitutes exhalant canal.This water inlet pipe anterior half-sclerotome uses stainless steel material, at copper " cap " 7
Part is then PTFE material.
As can be seen here, this utility model uses soft magnetic ferrite to carry out chokes, by soft magnetic ferrite spraying plating coaxially
Line outer conductor surface, forms one layer of very thin film.Owing to soft magnetic ferrite has high pcrmeability, it is sprayed with soft magnet
Being equivalent on the coaxial outer conductor of oxysome be loaded with a biggest inductance of inductance value, this " inductance " can effectively cut off high-frequency electrical
Stream transmits backward along coaxial line outer surface, thus prevents microwave " to escape " backward.
In such scheme, the chokes performance of soft magnetic ferrite is the most relevant, around antenna with its material self character
Environment is unrelated.So being not required to fill the material of other stable performances around antenna.So, recirculated water is unimpeded to the passage of syringe needle
's.
In such scheme, distributing point to copper " cap " end and the distance to soft magnetic ferrite thin film are all about 1/2 wavelength (group
In knitting).So after using soft magnetic ferrite chokes, microwave antenna is equivalent to symmetrical full-wave dipole antenna, its near field distribution ratio half
Ripple element antenna is more uniform.
Additionally, in such scheme, copper " cap " Main Function is to extend and reinforce coaxial line inner core, it is also possible to directly use same
Axle inner core.The distributing point distance to copper " cap " end with to soft magnetic ferrite thin film can also be unequal, and distance can also have change
Change, the most elongated or 1mm～2mm that shorten.The material of water inlet pipe, outer tube and tartar and thickness can also enter according to practical situation
Row selects, but water inlet pipe to be ensured and outer tube are nonmetallic materials in aerial radiation region.
Through experimental verification, soft magnetic ferrite thin film of the present utility model can suppress after coaxial line outer wall effectively to biography
Defeated microwave.Fig. 3 and Fig. 4 is respectively provided without chokes technology and uses two kinds of the soft magnetic ferrite chokes absorptions melting antenna
Field pattern.As shown in Figure 3,4, by contrast, it appeared that use soft magnetic ferrite chokes technology melt antenna zone of ablation
Territory is more satisfactory spherical, shows that chokes effect is the most satisfactory.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step describes in detail it should be understood that the foregoing is only specific embodiment of the utility model, is not limited to this reality
With novel, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection domain of the present utility model.
Claims (10)
1. for an antenna module for microwave ablation, including:
Irradiator, for going out the Microwave emission being used for melting；
Cooling-water duct, for cooling down described irradiator；
Coaxial line, for will microwave generator produce described in be used for the microwave transmission melted to described irradiator；Its feature exists
In, the outermost layer of described coaxial line is formed the choke coil of a soft magnetic ferrite thin film.
2. antenna module as claimed in claim 1, it is characterised in that the relative permeability of described soft magnetic ferrite thin film is more than
50。
3. antenna module as claimed in claim 1, it is characterised in that the material of described soft magnetic ferrite thin film is nickel zinc ferro-cobalt
Oxysome.
4. antenna module as claimed in claim 1, it is characterised in that the length of described soft magnetic ferrite thin film is more than or equal to
2mm。
5. antenna module as claimed in claim 1, it is characterised in that the thickness of described soft magnetic ferrite thin film 0.05～
Between 0.1mm scope.
6. antenna module as claimed in claim 1, it is characterised in that described irradiator is copper " cap ", or, described irradiator
For coaxial line foremost.
7. antenna module as claimed in claim 6, it is characterised in that described irradiator is copper " cap ", and described irradiator
Distributing point to described copper " cap " distance foremost and to the difference of distance of described soft magnetic ferrite thin film between 0～2mm.
8. antenna module as claimed in claim 1, it is characterised in that do not fill Gao Jie around described soft magnetic ferrite thin film
Permittivity media.
9. antenna module as claimed in claim 8, it is characterised in that described high dielectric constant is zirconium oxide.
10. a microwave melt needle, it is characterised in that described microwave melt needle comprises just like claim 1 to 9 any one institute
The antenna module stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620127692.0U CN205758714U (en) | 2016-02-18 | 2016-02-18 | For the antenna module of microwave ablation and the microwave melt needle using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620127692.0U CN205758714U (en) | 2016-02-18 | 2016-02-18 | For the antenna module of microwave ablation and the microwave melt needle using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205758714U true CN205758714U (en) | 2016-12-07 |
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ID=57413460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620127692.0U Active CN205758714U (en) | 2016-02-18 | 2016-02-18 | For the antenna module of microwave ablation and the microwave melt needle using it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205758714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596079A (en) * | 2016-02-18 | 2016-05-25 | 赛诺微医疗科技(北京)有限公司 | Antenna component used for microwave ablation and microwave ablation needle adopting same |
-
2016
- 2016-02-18 CN CN201620127692.0U patent/CN205758714U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596079A (en) * | 2016-02-18 | 2016-05-25 | 赛诺微医疗科技(北京)有限公司 | Antenna component used for microwave ablation and microwave ablation needle adopting same |
| CN105596079B (en) * | 2016-02-18 | 2018-09-28 | 赛诺微医疗科技（浙江）有限公司 | For the antenna module of microwave ablation and using its microwave melt needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180214 Address after: 315300 Cixi City, Zhejiang Province emerging industrial clusters in the streets of the Han Han Road, No. 1 emerging Patentee after: Sainuo micro medical technology (Zhejiang) Co., Ltd. Address before: 100012 Beijing city Chaoyang District red barracks Road No. 22 building 3 layer Aston Patentee before: SINOMED MEDICAL TECHNOLOGY (BEIJING) CO., LTD. |
|
| TR01 | Transfer of patent right |