CN208625844U - A kind of unilateral microwave melt needle - Google Patents
A kind of unilateral microwave melt needle Download PDFInfo
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- CN208625844U CN208625844U CN201721903794.8U CN201721903794U CN208625844U CN 208625844 U CN208625844 U CN 208625844U CN 201721903794 U CN201721903794 U CN 201721903794U CN 208625844 U CN208625844 U CN 208625844U
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- microwave
- coaxial cable
- unilateral
- ablation
- antenna
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Abstract
The utility model provides a kind of unilateral microwave melt needle, including ablation needle tubing and ablation syringe needle, microwave coaxial cable is equipped in the ablation needle tubing, it melts and is equipped with antenna in syringe needle, microwave coaxial cable is connected to antenna, the outer ring of the microwave coaxial cable is equipped with metal adapter jacket, and the outer ring of the antenna is equipped with the regulating part for adjusting microwave direction.The microwave coaxial cable includes inner core, dielectric layer and cable outer layer, and inner core and dielectric layer of the microwave coaxial cable close to the first end of ablation needle pass through the metal adapter jacket, and inner core is connected to antenna, and arc metal plate is fixedly connected with metal adapter jacket.
Description
Technical field
The utility model relates to area of medical devices, especially a kind of unilateral microwave melt needle.
Background technique
Microwave Coagulation Therapy be a kind of pair of tumor tissues have efficiently, quickly, be evenly heated, thermocoagulation thoroughly, user
Just, safe treatment method, is widely used to clinic for many years.As clinical deepens continuously, clinic disappears for microwave
The requirement for melting needle (antenna for radiating microwave) is also higher and higher.In the prior art, only the form of with good grounds tumor tissues is chosen not
Ablation syringe needle with length carries out ablation, and for it is not rounded or not be in approximate ellipse elongated shape tumour, with more
Root microwave melt needle time sharing segment is treated.
Utility model content
Purpose of utility model: technical problem to be solved in the utility model is in view of the deficiencies of the prior art, to provide one
The unilateral microwave melt needle of kind.
In order to solve the above-mentioned technical problem, the utility model provides a kind of unilateral microwave melt needle, including ablation needle tubing
With ablation syringe needle, the ablation needle tubing is interior to be equipped with microwave coaxial cable, antenna is equipped in ablation syringe needle, microwave coaxial cable connects
To antenna, the outer ring of the microwave coaxial cable is equipped with metal adapter jacket, and the outer ring of the antenna is equipped with for adjusting microwave side
To regulating part.
In the utility model, the microwave coaxial cable includes inner core, dielectric layer and cable outer layer, and microwave coaxial cable leans on
The inner core and dielectric layer at the nearly first end of ablation needle pass through the metal adapter jacket, and inner core is connected to antenna, arc metal plate and gold
Belong to adapter jacket to be fixedly connected.
In the utility model, inside the metal adapter jacket for for across microwave coaxial cable front end inner core and Jie
The through-hole of matter layer, the aperture of through-hole and ablation syringe needle, inner core and dielectric layer form impedance matching.
In the utility model, the syringe needle that melts is the tip portion of front end and the column part of rear end, in column part
Portion is equipped with antenna hole, and column part outer ring is equipped with unilateral slot, and antenna is arranged in antenna hole, and regulating part is arranged on unilateral slot.
In the utility model, the regulating part is a sheet metal.
In the utility model, the end of the ablation needle tubing is equipped with handle, is equipped at handle and is connected with microwave coaxial cable
Coaxial cable connector.
In the utility model, end seal is equipped in the handle, end seal is equipped with temperature sensor, and handle lower part is equipped with and is used for
Connect the connection terminal of temperature sensor.
Described that subordinate is additionally provided with water supply hose in the utility model, water supply hose connects capillary, and capillary extending arrives
Needle tubing front end is melted, capillary front end is equipped with water outlet, and cooling water flows out from water outlet and is back to handle in ablation needle tubing
Interior, cooling water is flowed out by delivery hose.
In the utility model, the size of metal adapter jacket meets:
D is the aperture of metal adapter jacket through-hole, and d is the inner core diameter of coaxial cable, and ε is the dielectric constant of dielectric layer；
The outer diameter length of metal adapter jacket is the length of 0.5~1 times of antenna.
The utility model has the advantages that the utility model provides a kind of unilateral microwave melt needle, single-sided directional Microwave emission function is special
The tumour of elongated shape is treated, is reduced with needle number and treatment duration.
Detailed description of the invention
The utility model is done with reference to the accompanying drawings and detailed description and is further illustrated, the utility model
Above-mentioned or otherwise advantage will become apparent.
Fig. 1 is the whole diagrammatic cross-section of ablation needle；
Fig. 2 is partial enlarged view at Figure 1A；
Fig. 3 is cross-sectional view at B-B ' in Fig. 2；
Fig. 4 needle portion perspective view of the explosion.
Specific embodiment
It elaborates below in conjunction with attached drawing to the utility model.
Embodiment:
Such as Fig. 1, a kind of unilateral microwave melt needle provided in this embodiment, including ablation syringe needle 1, switching metal cap 3, ablation
Needle tubing 11 and handle 12 are equipped with switching metal cap 3 between ablation syringe needle 1 and one end of ablation needle tubing 11, ablation needle tubing 11
Rear end is connect with the head of handle 12, and the front end for melting needle tubing 11 connects with switching metal cap 3, is equipped in the tail portion of handle 12 solid
Determine frame and the socket for external connection, coaxial cable connector 9 is equipped on the fixed frame of 12 tail portion of handle and for connecting
The the first connection terminal 6a and the sub- 6b of second connection end of temperature sensor, ablation needle tubing 11 is interior to be equipped with for connecting ablation syringe needle 1
Microwave coaxial cable 2 and water inlet stainless steel capillary 4, on the microwave coaxial cable other end and 12 lower part fixed frame of handle
Coaxial cable connector 9 connects, and temperature sensor 6c is equipped in end seal 10, is equipped with and is used on the fixed frame of 12 lower part of handle
It connects on the first connection terminal 6a and second connection end sub- 6b, water supply hose 8b and 12 tail portion fixed frame of handle of temperature sensor
The one end water inlet 7b be connected, the water inlet 7b other end is connected to water inlet with stainless steel capillary 4, water from water outlet 4a outflow,
It is flow back into the end water outlet 7a in ablation 11 inner space of needle tubing, the water outlet 7a other end is connected with delivery hose 8a.
Such as Fig. 2, Fig. 3 and Fig. 4, the microwave coaxial cable front end and metal adapter jacket rear end face 3a melted in needle tubing 11 are welded
It connects, after the inner core 2a and dielectric layer 2b that microwave coaxial cable stretches out pass through metal adapter jacket 3, inner core 2a and ablation needle wall
Antenna 1b phase is welded, and the outer ring of ablation syringe needle, the front end of arc metal plate 1c and switching metal cap is arranged in arc metal plate 1c
Face 3b phase is welded, and designing impedance matching is passed through in the aperture of metal adapter jacket interior bone, realize microwave coaxial cable inner core 2a,
Dielectric layer 2b, the ablation triangular impedance matching of syringe needle 1, while having reached microwave coaxial cable and having melted the mechanical connection of syringe needle
Reliability design.
It is equipped with flange at metal adapter jacket rear end face 3a, convenient for welding, and increases the connection mechanical strength with ablation needle tubing.
The outer ring dielectric layer 2b, metal adapter jacket front end are equipped with block 13, avoid that short circuit occurs in processing, while improving micro-
The compressive resistance of wave coaxial cable inner core 2a and metal adapter jacket 3.
The outermost layer part 5 for melting needle tubing 11 is designed using stainless steel tube, and 10 surrounding of end seal is designed using metal material, on
It states water inlet 7b, water outlet 7a, the first connection terminal 6a, the sub- 6b of second connection end and coaxial cable connector 9 and is all located at end seal
10 lower sections, above-mentioned temperature sensor use thermistor.Microwave energy passes to ablation syringe needle 1 through coaxial cable connector 9 and carries out
Single-sided directional field emission, achieve the effect that only to treat it is unilateral, cooling water through water inlet pipe 8b flow into ablation shank 11 in it is stainless
Steel wool tubule 4, then flowed out after flowing back into water outlet 7a by outlet pipe 8a.Guarantee the requirement that ablation shank temperature cannot be too high.
Syringe needle is melted by using directional aerial design principle, integrated structure design is carried out, using low-temperature co-fired ceramics
(Low Temperature Co-fired Ceramic LTCC) integrated assembly technology is by directional aerial 1b and arc metal plate 1c
Processing is fabricated on ceramic dielectric 1a, and the metal adapter jacket and microwave coaxial cable for participating in impedance matching by one export
Realize switching in end.
If the internal diameter of coaxial outer conductor is D, the diameter of inner conductor is d, and wherein the dielectric constant of filled media is ε: then
The characteristic of coaxial line hinders
It is several that the characteristic impedance of coaxial line is often made into 30 Ω, 50 Ω, 70 Ω etc., and power reduces two with decaying greatly in order to balance
50 Ω are selected in the requirement of aspect.
Aperture, that is, D of the through-hole of the metal adapter jacket of the utility model, the inner core of coaxial cable are the dielectric of d, dielectric layer
Constant is ε.
In view of mechanical strength, the length of metal adapter jacket metal adapter jacket probably in 5mm~10mm, the present embodiment
Length is 10mm；Outer diameter has technical requirements, the length of about 0.5~1 times of 1b；Internal orifice dimension has technical requirements, outside coaxial cable
The internal diameter of conductor is adapted to.Improve the input standing wave and directive gain of directional aerial.
λ is the corresponding wavelength of microwave frequency, and antenna 1b length is to be similar to λ/8, λ/16, λ/32, and regulating part 1c length is close
Like 1.2~1.4 times for antenna 1b length, with a thickness of the thickness of 1 ounce of deposited copper, which is conducive to improve directional aerial
Input standing wave and directive gain.
The utility model provides a kind of unilateral microwave melt needle, and the method and approach for implementing the technical solution are very
More, the above is only the preferred embodiment of the utility model, it is noted that for those skilled in the art
For, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as the protection scope of the utility model.The available prior art of each component part being not known in the present embodiment is subject to reality
It is existing.
Claims (9)
1. a kind of unilateral microwave melt needle, which is characterized in that including ablation needle tubing (11) and ablation syringe needle (1), the ablation needle
It manages and is equipped with microwave coaxial cable in (11), be equipped with antenna (1b) in ablation syringe needle (1), microwave coaxial cable is connected to antenna
The outer ring of (1b), the microwave coaxial cable are equipped with metal adapter jacket (3), and the outer ring of the antenna (1b) is equipped with micro- for adjusting
The regulating part (1c) in wave direction.
2. a kind of unilateral microwave melt needle according to claim 1, which is characterized in that the microwave coaxial cable includes interior
Core (2a), dielectric layer (2b) and cable outer layer (2c), inner core and dielectric layer of the microwave coaxial cable close to ablation syringe needle (1) one end
Across the metal adapter jacket (3), inner core is connected to antenna (1b), and regulating part (1c) is fixedly connected with metal adapter jacket (3).
3. a kind of unilateral microwave melt needle according to claim 2, which is characterized in that be use inside the metal adapter jacket
In the through-hole for the inner core and dielectric layer for passing through microwave coaxial cable front end, the aperture of through-hole and ablation syringe needle, inner core and medium
Layer forms impedance matching.
4. a kind of unilateral microwave melt needle according to claim 3, which is characterized in that the ablation syringe needle (1) is front end
Tip portion and rear end column part, antenna hole is equipped with inside column part, column part outer ring is equipped with unilateral slot, antenna
(1b) is arranged in antenna hole, and regulating part (1c) is arranged on unilateral slot.
5. a kind of unilateral microwave melt needle according to claim 4, which is characterized in that the regulating part (1c) is a metal
Piece.
6. a kind of unilateral microwave melt needle according to claim 4, which is characterized in that the end of the ablation needle tubing is equipped with
Handle (12) is equipped with the coaxial cable connector (9) being connected with microwave coaxial cable at handle (12).
7. a kind of unilateral microwave melt needle according to claim 5, which is characterized in that be equipped with end seal, end in the handle
It seals up and is equipped with temperature sensor, handle lower part is equipped with more than one connection terminal for being used to connect temperature sensor.
8. a kind of unilateral microwave melt needle according to claim 6, which is characterized in that it is described subordinate is additionally provided with it is soft into water
It manages (8b), water supply hose (8b) connects capillary (4), and capillary (4), which extends to, melts needle tubing (11) front end, before capillary (4)
End is equipped with water outlet (4a), and cooling water is flowed out from water outlet and is back in handle in ablation needle tubing, and cooling water passes through water outlet
Hose (8a) outflow.
9. a kind of unilateral microwave melt needle according to claim 3, which is characterized in that the size of metal adapter jacket (3) is full
Foot:
D is the aperture of metal adapter jacket through-hole, and d is the inner core diameter of coaxial cable, and ε is the dielectric constant of dielectric layer；
The outer diameter length of metal adapter jacket is the length of 0.5~1 times of antenna (1b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903794.8U CN208625844U (en) | 2017-12-29 | 2017-12-29 | A kind of unilateral microwave melt needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903794.8U CN208625844U (en) | 2017-12-29 | 2017-12-29 | A kind of unilateral microwave melt needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208625844U true CN208625844U (en) | 2019-03-22 |
Family
ID=65730635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721903794.8U Active CN208625844U (en) | 2017-12-29 | 2017-12-29 | A kind of unilateral microwave melt needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN208625844U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108030549A (en) * | 2017-12-29 | 2018-05-15 | 南京康友医疗科技有限公司 | A kind of unilateral microwave melt needle |
| WO2023123619A1 (en) * | 2021-12-31 | 2023-07-06 | 南京臻泰微波科技有限公司 | Combined low-impedance microwave ablation transmission assembly and impedance matching method therefor |
-
2017
- 2017-12-29 CN CN201721903794.8U patent/CN208625844U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108030549A (en) * | 2017-12-29 | 2018-05-15 | 南京康友医疗科技有限公司 | A kind of unilateral microwave melt needle |
| CN108030549B (en) * | 2017-12-29 | 2024-04-12 | 南京康友医疗科技有限公司 | Unilateral microwave ablation needle |
| WO2023123619A1 (en) * | 2021-12-31 | 2023-07-06 | 南京臻泰微波科技有限公司 | Combined low-impedance microwave ablation transmission assembly and impedance matching method therefor |
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