CN109938832A - A kind of high-performance semi-rigid penetration type microwave ablation antenna - Google Patents
A kind of high-performance semi-rigid penetration type microwave ablation antenna Download PDFInfo
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- CN109938832A CN109938832A CN201910322654.9A CN201910322654A CN109938832A CN 109938832 A CN109938832 A CN 109938832A CN 201910322654 A CN201910322654 A CN 201910322654A CN 109938832 A CN109938832 A CN 109938832A
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- semi
- rigid
- microwave ablation
- penetration type
- type microwave
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- 238000002679 ablation Methods 0.000 title claims abstract description 24
- 230000035515 penetration Effects 0.000 title claims abstract description 22
- 238000005538 encapsulation Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052731 fluorine Inorganic materials 0.000 abstract description 14
- 239000011737 fluorine Substances 0.000 abstract description 14
- 206010028980 Neoplasm Diseases 0.000 abstract description 7
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- 238000005516 engineering process Methods 0.000 description 5
- 238000002560 therapeutic procedure Methods 0.000 description 5
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- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
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- 229910052786 argon Inorganic materials 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000009730 filament winding Methods 0.000 description 1
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- 238000003384 imaging method Methods 0.000 description 1
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Abstract
High-performance semi-rigid penetration type microwave ablation antenna of the present invention, it include: triangular pyramid puncturing head, medium tube, semi-rigid coaxial cable and outer bush, further include: coaxial line of the high-performance semi-rigid coaxial cable as transmission microwave energy, in the coaxial line outer surface, encapsulation has helical spring and extends to antenna body tail portion；It is refilled in the helical spring outer surface and is cased with four fluorine tube.Antenna body diameter of the invention is small, microwave transmission loss is low, using helical spring as heat-insulated, elongated antenna body can be made to have enough suppleness, and what is selected in antenna body outermost layer is the four fluorine tube with high self-lubricating and high insulative properties.The present invention can compare securely and effectively under " high-resolution endoscopic system " guidance, implement the operation of visual entity tumor microwave ablation, so that the microwave intervention treatment for non-invasive or Micro trauma provides a brand-new surgical instrument.
Description
Technical field
The present invention relates to a kind of high-performance semi-rigid penetration type microwave ablation antennas, are suitable for noninvasive or Minimally Interventional Therapy hand
Art is implemented Microwave Coagulation Therapy to entity tumor under the guidance of the high-resolutions endoscopic system such as bronchoscope, gastroscope, colonoscopy, is belonged to
In medical microwave technical applications.
Background technique
Since the 21th century, with the development of Modern Imaging Technique, the operation of minimally invasive intervention both at home and abroad is in clinical application
Progress with rapid changepl. never-ending changes and improvements is achieved, wherein the expansion of Microwave Coagulation Therapy technology is especially rapid.In recent years, tumor microwave intervention is controlled
Treatment is become increasingly mature, and towards more safety, accurately target is strided forward, and quietly is expanded towards the field of noninvasive intervention.
Under the guidance of " high-resolution endoscopic system ", clinical expert is tried to explore simultaneously successfully to have practiced non-invasive
The oncotherapies operations such as thoracic cavity, abdominal cavity, articular cavity to alimentary canal, respiratory tract, the urinary tract treatment and Micro trauma, such as high frequency device
The active treatment technology such as tool, argon plasma, laser, radio frequency successfully enters the field one after another.Therefore, microwave technology is to noninvasive
Property therapy field expansion will be trend of the times.
For medical microwave technology, how to match under " high-resolution endoscopic system " guidance and safely and effectively apply
In Noninvasive therapy field, key project will be become.
Currently, the microwave instrument in clinical investigation phase has a disadvantage in that it is adopted one is fibrous microwave melt needle
It is Weaving type coaxial cable, because of its elongated (1.2-1.6 meters) needle body, is allowed to lack enough suppleness and front end is enough
Puncture force, and needle body outer diameter is again relatively thicker.Another kind is the microwave melt needle of semi-rigid penetration type water-cooling structure, and deficiency is it
Structure outer diameter is larger, and discomfort is suitable for the endoscope guidance of the smaller internal diameter of cooperation, opposite to restrict its application range clinically.
Summary of the invention
The present invention has respectively overcome the defect and deficiency of existing said two products, proposes a kind of high-performance semi-rigid penetration type
Microwave ablation antenna can enter in body cavities under the guidance of the endoscope of smaller internal diameter specification, press under endoscope direct-view
Its ultrasonic puncture is intervened in target tissue, and the microwave ablation of entity tumor is implemented.
High-performance semi-rigid penetration type microwave ablation antenna of the present invention, comprising: triangular pyramid puncturing head, medium tube, semi-rigid are same
Shaft cable and outer bush, it is characterised in that: the inner conductor of the semi-rigid coaxial cable is packed into the circle that triangular pyramid punctures head-tail
In cylinder blind hole, using welding and be aided with the fixation that presses；The medium tube encapsulation is coated with viscous on the cylindrical body for puncturing head-tail
Agent is connect to fix；The inner hole encapsulation of the outer bush front end in the shoulder outer circle of medium tube tail portion, while its centre bore encapsulation in
On the semi-rigid coaxial cable, the two contact site is welded and fixed using air-tightness.Thus front end radiation electric of the present invention is constituted
The field source structure of magnetic wave (microwave) stablizes its antenna performance, simple and reasonable, easy to the microwave ablation range of tumor tissues
In control.
Further characteristic of the invention is as follows:
1, the puncturing head can be the metal material of copper or stainless steel, tool it is preferable to use triangular pyramid or cone, material
There are enough mechanical strengths and puncture force.
2, in semi-rigid coaxial cable outer surface, encapsulation has helical spring and extends to antenna body tail portion, the spiral bullet
Spring and semi-rigid coaxial cable are loose fit, and the two gap is to keep opposite free bend movement to be advisable.The helical spring choosing
It is formed with special stainless steel filament winding system, and thermally treated with certain flexibility.
3, axial groove is opened up on the outer bush shoulder outer round surface, to be embedded in the steel wire of helical spring front end,
Mechanical force rivets tightly and is aided with scolding tin and fixes again, is fastenedly connected formation between outer bush and helical spring.
4, in the outer bush shoulder outer circle and helical spring outer surface encapsulation four fluorine tube or thermoplastic polytetrafluoro pipe, described four
Fluorine pipe extends to antenna body tail portion.
5, using steel wire throat hoop or steel wire lashing mode, thin-walled four fluorine tube is fixed on outer bush shoulder outer round surface.For
This is equipped with annular ditch groove in the outer bush shoulder outer cylinder surface, to guarantee fastening thin-walled four fluorine tube and outer bush without generation axis
To the possibility of play.
6, in the tail portion welding equipment radio frequency connector of the semi-rigid coaxial cable, with feed microwave energy, wherein semi-rigid is coaxial
It is firm that the inner and outer conductor of cable and radio frequency connector must be respectively welded, and must not form short circuit.
7, the length of the helical spring and thin-walled tetrafluoro casing is 10-15 millimeters shorter than semi-rigid coaxial cable length, with
Not interfering the free bend of antenna body is advisable.
8, it being equipped with handle in antenna body tail portion, radio frequency connector is press-fitted and is aided with bonding agent and fixes, and handle Guan Zaicong days
Wire body front end encapsulation is adhesively fixed with handle seat.
In conclusion outstanding feature of the invention is: (1) puncturing head effectively increases the puncture of semi-rigid microwave antenna
Power.(2) semi-rigid coaxial cable is same as the Weaving type of microwave transmission coaxial line of the invention and existing fibrous microwave melt needle
Axis compares, and improves the suppleness of antenna body, and efficiently reduces its microwave transmission loss and calorific value.(3) it is wrapped in
Spiral close winding spring outside semi-rigid coaxial cable not only further enhances inventive antenna body flexibility, and effectively acts as
The heat-insulated radiation with buffering semi-rigid coaxial cable heat to periphery.Thus compared with existing fibrous microwave melt needle, more one layers
Heat-barrier material.(4) the outermost thin-walled four fluorine tube of inventive antenna body, only this antenna body is heat-insulated, and itself and endoscope
There is good self-lubrication between tube wall.(5) antenna body of the invention is compact-sized, effectively reduces its own outer diameter, because
This present invention can be mating and be suitable for the clinically used import high-resolution endoscopic system of Hospitals at Present.
In short, the present invention is that microwave intervention treatment of tumor technology enters non-invasive control under clear visual endoscope guidance
A new step is stepped up in treatment field.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is one high-performance semi-rigid penetration type microwave ablation antenna front ends structural schematic diagram of the present embodiment.
Fig. 2 is one high-performance semi-rigid penetration type microwave ablation antenna tail structure schematic diagram of the present embodiment.
Label in figure is schematically as follows:
1- triangular pyramid puncturing head, 2- medium tube, 3- semi-rigid coaxial cable, 4- outer bush, 5- steel wire clip, 6- thin-walled tetrafluoro
Pipe, 7- helical spring, 8- handle tube, 9- handle set, 10- radio frequency connector.
Specific embodiment
Embodiment one
As shown in Figure 1 and Figure 2, the high-performance semi-rigid penetration type microwave ablation antenna of the present embodiment one, composition triangular pyramid puncture
First 1, medium tube 2, semi-rigid coaxial cable 3, outer bush 4, thin-walled four fluorine tube 6, steel wire clip 5, helical spring 7, handle tube 8, hand
Handle seat 9, radio frequency connector 10.The inner conductor of semi-rigid coaxial cable 3 is packed into the cylindrical body blind hole of 1 tail portion of triangular pyramid puncturing head
In, using welding and be aided with the fixation that presses；2 encapsulation of medium tube is coated with bonding on the cylindrical body of 1 tail portion of triangular pyramid puncturing head
Agent is fixed；The inner hole encapsulation of 4 front end of outer bush is in the shoulder outer circle of 2 tail portion of medium tube, while its centre bore encapsulation is in semi-rigid
On coaxial cable 3, the two contact site is welded and fixed using air-tightness.It is set with outside semi-rigid coaxial cable 3 and extends to antenna
The helical spring 7 of tail portion is loose fit between helical spring 7 and semi-rigid coaxial cable 3.The tail portion of outer bush 2 opens up axial direction
Groove, the steel wire of 7 front end of helical spring, which is embedded in the axial groove, to be fixed, and is riveted tightly by mechanical force and be aided with scolding tin and consolidated
It is fixed, it is fastenedly connected formation between outer bush and helical spring.Thin-walled four fluorine tube 6 is placed on outside helical spring 7 and outer bush 4, and
And its front end and outer bush 4 are fixed.Specifically, the outer round surface of outer bush 4 is equipped with annular ditch groove, it will be thin by steel wire clip 5
6 front end of wall four fluorine tube is caught in the fixation that thin-walled four fluorine tube 6 is realized in annular ditch groove.
The assemble flow of the present embodiment antenna front ends structure is as follows:
Firstly, the inner conductor of semi-rigid coaxial cable 3 is fitted into the blind hole of 1 tail portion cylindrical body of triangular pyramid puncturing head, using weldering
It connects and is aided with the fixation that presses.Then, by 2 encapsulation of medium tube on the cylindrical body for puncturing 1 tail portion of radiation head, matching surface can apply viscous
Agent is connect with fixation, by 4 encapsulation of outer bush in the shoulder outer circle of 2 tail portion of medium tube, matching surface can coating adhesive with fixation, together
When outer bush 4 centre bore also encapsulation is on the outer conductor surface of semi-rigid coaxial cable 3, to the two contact site using airtight
Property is welded and fixed.So far, that is, the assembly and group for completing the field source structure of the present embodiment front end radiated electromagnetic wave are welded.
Then, helical spring 7 along the tail portion encapsulation of semi-rigid coaxial cable 3 and is arrived into the tail end of outer bush 4, by spiral
7 end face steel wire of spring is curved in 90 °, is then caught in its steel wire in the axial groove of 4 shoulder outer round surface of outer bush, and impose machine
Tool power riveting is aided with again to be weldingly fixed on outer bush.Note: 7 length of helical spring should be shorter than 3 length of semi-rigid coaxial cable
10-15 millimeters, not interfere the free bend of antenna body.
Finally, then thin-walled four fluorine tube 6 is used steel wire along helical spring 7 tail portion encapsulation to the shoulder outer circle of outer bush 4
Thin-walled four fluorine tube 6 is firmly stuck in radial annular groove the radial annular groove for being located at outer bush 4 by clip 5.Note: thin-walled four fluorine tube
Length should be also 10-15 millimeters shorter than 3 length of semi-rigid coaxial cable, not interfere the free bend of antenna body.
So far, the assembly of high-performance semi-rigid penetration type microwave ablation antenna front ends part is completed.
The assemble flow of the present embodiment antenna tail structure is as follows:
Firstly, by the inner and outer conductor of semi-rigid coaxial cable 3 respectively at the inner and outer conductor firm welding of radio frequency connector 10, it must not
Short circuit, then complete the welding of 10 pedestal of radio frequency connector.
Then, it by 9 encapsulation of handle set in 10 pedestal outer circle of radio frequency connector, and is bonded secured.
Finally, handle tube 8 is Nian Jie with the contraposition of 9 rim of the mouth of handle set securely along antenna body (puncturing head) front end encapsulation.
As soon as the assembly of the embodiment of high-performance semi-rigid penetration type microwave ablation antenna of the present invention is so far completed, it is important micro-
The result of wave performance detection and load test is as follows:
1, it is tested with vector network analyzer, the voltage standing wave ratio of exemplar of the embodiment of the present invention in the unloaded state is 2.65 <
3.0(ministry standard)；Voltage standing wave ratio in the loaded state is 1.35 < 1.5(ministry standards).
2, in the test of Microwave Coagulation Pork liver ex vivo, when heat setting range is 2.0 centimeters of 3.0 X, the embodiment of the present invention
The antenna body hull-skin temperature of exemplar is not higher than 45 DEG C.
Proved by detection performance index with test data: the present invention can safely and effectively be suitable in " high-resolution
Under endoscopic system " guidance, implement the entity tumor microwave intervention treatment of visual non-invasive or Micro trauma.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, all fall within the protection scope of the claims in the present invention.
Claims (10)
1. a kind of high-performance semi-rigid penetration type microwave ablation antenna has puncturing head, medium tube, semi-rigid coaxial cable and leads outside
Set, it is characterised in that: it is set with the helical spring for extending to antenna tail portion outside the semi-rigid coaxial cable, the helical spring
Front end is fixed with outer bush.
2. high-performance semi-rigid penetration type microwave ablation antenna according to claim 1, it is characterised in that: the helical spring
It is loose fit between semi-rigid coaxial cable.
3. high-performance semi-rigid penetration type microwave ablation antenna according to claim 1, it is characterised in that: have one to be placed on institute
State the outer tube outside helical spring and outer bush.
4. high-performance semi-rigid penetration type microwave ablation antenna according to claim 3, it is characterised in that: before the outer tube
Outer bush is fixed on by steel wire throat hoop or steel wire lashing mode in portion.
5. high-performance semi-rigid penetration type microwave ablation antenna according to claim 3, it is characterised in that: the outer circle of outer bush
Surface is equipped with annular ditch groove, and outer tube front end is caught in the fixation that outer tube is realized in annular ditch groove by steel wire clip.
6. according to the described in any item high-performance semi-rigid penetration type microwave ablation antennas of claim 2-5, it is characterised in that: described
Outer tube is polyfluortetraethylene pipe or thermoplastic polyfluortetraethylene pipe.
7. high-performance semi-rigid penetration type microwave ablation antenna according to claim 1, it is characterised in that: the outer bush
Tail portion opens up axial groove, and the steel wire of the helical spring front end, which is embedded in the axial groove, to be fixed.
8. high-performance semi-rigid penetration type microwave ablation antenna according to claim 7, it is characterised in that: pass through mechanical force riveting
It is tight and be aided with scolding tin and fix, make to be formed between outer bush and helical spring and is fastenedly connected.
9. high-performance semi-rigid penetration type microwave ablation antenna according to claim 1, it is characterised in that: the semi-rigid is coaxial
The inner conductor of cable is fitted into the cylindrical body blind hole for puncturing head-tail and fixed；The medium tube encapsulation is in the circle for puncturing head-tail
It is on cylinder and fixed；The inner hole encapsulation of the outer bush front end is in the shoulder outer circle of medium tube tail portion, while its centre bore fills
It is placed on the semi-rigid coaxial cable, the two contact site is welded and fixed using air-tightness.
10. high-performance semi-rigid penetration type microwave ablation antenna according to claim 6, it is characterised in that: the spiral bullet
The length of spring and outer tube is 10-15 millimeters shorter than semi-rigid coaxial cable length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910322654.9A CN109938832A (en) | 2019-04-22 | 2019-04-22 | A kind of high-performance semi-rigid penetration type microwave ablation antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910322654.9A CN109938832A (en) | 2019-04-22 | 2019-04-22 | A kind of high-performance semi-rigid penetration type microwave ablation antenna |
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| CN109938832A true CN109938832A (en) | 2019-06-28 |
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| CN201910322654.9A Pending CN109938832A (en) | 2019-04-22 | 2019-04-22 | A kind of high-performance semi-rigid penetration type microwave ablation antenna |
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| CN210095903U (en) * | 2019-04-22 | 2020-02-21 | 南京长城医疗设备有限公司 | High-performance semi-rigid puncture type microwave ablation antenna |
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- 2019-04-22 CN CN201910322654.9A patent/CN109938832A/en active Pending
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|---|---|---|---|---|
| US5344441A (en) * | 1991-07-03 | 1994-09-06 | Volker Gronauer | Antenna arrangement with supply cable for medical applications |
| CN2101501U (en) * | 1991-08-09 | 1992-04-15 | 上海长海医院 | 2450 mhz microwave aerial for heating therapy |
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