CN103892907A - Injection type aciculiform microwave antenna for tumor ablation treatment - Google Patents
Injection type aciculiform microwave antenna for tumor ablation treatment Download PDFInfo
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- CN103892907A CN103892907A CN201410130313.9A CN201410130313A CN103892907A CN 103892907 A CN103892907 A CN 103892907A CN 201410130313 A CN201410130313 A CN 201410130313A CN 103892907 A CN103892907 A CN 103892907A
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Abstract
The invention discloses an injection type aciculiform microwave antenna for tumor ablation treatment and belongs to medical instruments of tumor ablation treatment. The injection type aciculiform microwave antenna comprises a radiator, an aciculiform radiator case is mounted on the radiator, the radiator is mounted at the front end of a needle rod, a radio-frequency coaxial connector is mounted at the rear end of the needle rod, and a coaxial cable is arranged in the needle rod. A water inlet channel and a water outlet channel are arranged in the needle rod, the water outlet channel is communicated with a water outlet structure of the tail end of the needle rod and further provided with capillary tubes for injection, and micropores communicated with the capillary tubes are arranged on the needle rod and near the radiator. During microwave ablation, the capillary tubes are used for injecting saltwater, carbonizing probability at the high temperature due to overhigh power at the front end of the needle rod is decreased, ablation range is enlarged, and ablation curative effect is effectively improved. Meanwhile, the injection type aciculiform microwave antenna for tumor ablation treatment is simple in structure, applicable to industrialized production and easy to popularize.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments for tumour ablation treating, in particular, the present invention relates generally to a kind of injection-type microwave aciculiform antenna for tumour ablation treating.
Background technology
Along with the progress of oncotherapy science, in tumor microwave ablation techniques, obtain in recent years clinically considerable progress.Microwave ablation is to utilize microwave energy effect to organize at once to produce heat effect, within the time of several minutes, forms the spherical thermal field of stable class, central temperature is greater than 100 DEG C, edge is greater than 60 DEG C, tumor tissues at high temperature moment be solidified deactivation, and then progressively melt and reach therapeutic purposes.Because the safe and wound of microwave ablation technology is little and controlled to the sphere of action size of tissue, so be more and more subject to doctors' high praise, there is the trend that becomes tumour ablation first choice of technology in the future.At present in the operating temperature high (being greater than 100 DEG C) of the major defect of the single needle water-cooled microwave ablation needle shape antenna using front end irradiator (needle point place) when due to high-power use, needle point place organizes easy carbonization, thereby affect the transmitting of microwave energy, cause that to melt the scope of damage little, melting form keeps off in the defect such as spherical, and aciculiform antenna does not still possess the function of while injectable drug in the process melting at microwave energy at present, therefore need further to be improved for the curative effect that melts of tumor; Therefore be necessary its structure to do further research and improvement.
Summary of the invention
One of object of the present invention is for above-mentioned deficiency, a kind of injection-type microwave aciculiform antenna for tumour ablation treating is provided, little to expect the solving scope that melts damage that microwave melt needle causes because operating temperature is too high in prior art, melt form and keep off in spherical grade technical problems such as the ablation effect of tumor are not good.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of injection-type microwave aciculiform antenna for tumour ablation treating provided by the present invention, described aciculiform antenna comprises irradiator, aciculiform radiator cover is installed on described irradiator, described irradiator is arranged on the front end of shank, and the rear end of shank is also provided with radio frequency (RF) coaxial connector, the inside of described shank is also provided with coaxial cable, and described coaxial cable connects respectively irradiator and radio frequency (RF) coaxial connector, for accessing microwave source by radio frequency (RF) coaxial connector, the microwave that microwave source produces transfers to irradiator through radio frequency (RF) coaxial connector and coaxial cable successively, and then generation radiation, described radio frequency (RF) coaxial connector is also connected with control knob, for conducting and disconnection by control knob control radio frequency (RF) coaxial connector, described shank inside is also provided with inlet channel and water outlet, and cooling for irradiator and shank being carried out at radiation generating process, described water outlet is also connected with the water flowing out structure chamber of shank end, in described water outlet, be also provided with the capillary tube for injecting, near near irradiator on described shank is provided with the micropore being connected with described capillary tube, on the end of described shank, be also provided with injection joint, described injection joint is connected with capillary tube, discharges via capillary tube for the liquid being entered by injection joint by micropore.
As preferably, further technical scheme is: described radio frequency (RF) coaxial connector is connected with microwave source, for exporting microwave by microwave source to the irradiator of shank front end.
Further technical scheme is: on described shank, the inside of micropore front end is also provided with water blockoff ring, flows into water outlet for the liquid that prevents capillary tube.
Further technical scheme is: the rear end of described shank is also provided with water blockoff ring and water cavity, and described capillary tube is connected with injection joint by water cavity; Described micropore is at least two, and is all connected with capillary tube.
Further technical scheme is: the external diameter of described irradiator is 2 to 8 millimeters.
Further technical scheme is: the end of described shank is also provided with protection handle, and described protection taper knob is contained on water flowing out structure chamber and radio frequency (RF) coaxial connector, and control knob is also arranged on protection handle.
Further technical scheme is: the inside of described shank is also provided with water inlet pipe, and described water inlet pipe is sleeved on the outside of coaxial cable, and gap between the inwall of water inlet pipe and the outer wall of coaxial cable forms inlet channel; The outside of described water inlet pipe is also set with aqueduct, and the gap between the outer wall of described aqueduct and the inwall of shank forms water channel, and described capillary tube is arranged in the gap between the outer wall of aqueduct and the inwall of shank.
Further technical scheme is: on described protection handle, be also provided with microwave output indicator, the electrode access radio frequency (RF) coaxial connector of described microwave output indicator, for lighting after radio frequency (RF) coaxial connector conducting.
Further technical scheme is: described irradiator be shaped as column.
Compared with prior art, one of beneficial effect of the present invention is: by utilize the capillary tube mode of pump pickle simultaneously in microwave ablation process, reduce shank front end because of the excessive probability that carbonization at high temperature occurs of power, expand ablation range, also can utilize capillary injection liquid medicine to assist and melt, effectively improve and melt curative effect; A kind of injection-type microwave aciculiform antenna structure for tumour ablation treating provided by the present invention is simple simultaneously, is suitable for suitability for industrialized production, is easy to promote.
Brief description of the drawings
Fig. 1 is the structural representation for one embodiment of the invention is described;
Fig. 2 is the syndeton schematic diagram for another embodiment of the present invention irradiator and radio frequency (RF) coaxial connector are described;
Fig. 3 is the shank internal structure schematic diagram for another embodiment of the present invention is described;
In figure, 1 is that irradiator, 2 is for shank, 3 is for radio frequency (RF) coaxial connector, 4 is for coaxial cable, 5 is for microwave output indicator, 6 is for control knob, 7 is for water flowing out structure chamber, 8 is for protection handle, 9 is for capillary tube, 10 is for micropore, 11 is for inlet channel, 12 is for water outlet, 13 is for water inlet pipe, 14 is for aqueduct, 15 is for aciculiform radiator cover.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further elaborated.
Shown in figure 1, one embodiment of the present of invention are a kind of injection-type microwave aciculiform antennas for tumour ablation treating, being originally in strength, in aciculiform antenna, need to arrange irradiator 1, and aciculiform radiator cover 15 is installed on irradiator 1, irradiator 1 is arranged on to the front end of shank 2, and the rear end of shank 2 is also provided with radio frequency (RF) coaxial connector 3; The inside of aforementioned shank 2 is also provided with coaxial cable 4, adopt this coaxial cable 4 to connect respectively irradiator 1 and radio frequency (RF) coaxial connector 3, for accessing microwave source by radio frequency (RF) coaxial connector 3, the microwave that microwave source produces transfers to irradiator 1 through radio frequency (RF) coaxial connector 3 and coaxial cable 4 successively, and then produces radiation; Go out as shown in Figure 2, the global shape of above-mentioned irradiator 1 is preferably set to column simultaneously.
And above-mentioned radio frequency (RF) coaxial connector 3 is also connected with control knob 6, for controlled conducting and the disconnection of radio frequency (RF) coaxial connector 3 by control knob 6; What is more important, for ensureing the thermal diffusivity of aciculiform antenna, also need set up in the inside of shank 2 inlet channel 11 and water outlet 12, cooling for irradiator 1 and shank 2 being carried out at radiation generating process, and water outlet 12 is also connected with the water flowing out structure chamber 7 of shank 2 ends.
Go out as shown in Figure 3, in above-mentioned water outlet 12, also need to be provided for the capillary tube 9 of injection, and on shank 2 near near micropore 10 that irradiator 1, setting is connected with capillary tube 9; On the end of shank 2, be also provided with injection joint simultaneously, and this injection joint is connected with capillary tube 9, discharge by micropore 10 via capillary tube 9 for the liquid being entered by injection joint, by the structure of aforesaid capillary tube 9 and micropore, can make aciculiform antenna while injecting fluid medicine in the process of microwave ablation, the curative effect that later increases tumour ablation, also can prevent that shank 2 front ends from carbonization at high temperature occurring by capillary tube 9 pump pickles.
As shown in Figure 1, above-mentioned radio frequency (RF) coaxial connector 3 is connected with microwave source, for exporting microwave by microwave source to the irradiator 1 of shank 2 front ends.
And in the present embodiment, inventor also considers that the liquid in above-mentioned capillary tube 9 flows into the normal cooling that can affect irradiator 1 in water outlet 12, therefore also on shank 2, water blockoff ring has been set up in the inside of micropore 10 front ends, flows into water outlet 12 for the liquid that prevents capillary tube 9.Through inventor test, the micropore arranging on shank 2 does not affect the intensity of microwave transmitting and radiator cover, under the effect of the front end of while shank and the anti-carbonization of salt water retting cooling at circulating water flow, can tolerate the microwave power of 80W about 60 minutes.
In the present embodiment, for ensureing have enough saline or liquid medicine to ooze out in microwave ablation process, preferably above-mentioned micropore 10 is set to two, and by the irradiator 1 of circulating water shank 2 front ends, effectively reduce the probability that shank 2 front ends are carbonized because of excess Temperature, and can carry out drug injection by capillary tube 9, it melts curative effect and is obviously better than existing microwave melt needle.
Above-mentioned shank 2 rear ends are also provided with water blockoff ring and water cavity, be connected with injection joint by water cavity for capillary tube 9, adopt water blockoff ring and water cavity to isolate in the rear end of shank 2, prevent that the liquid in capillary tube 9 from entering in water outlet 12 in the rear end of shank 2;
Shown in Fig. 1; for ease of the use of microwave aciculiform antenna; inventor is also with reference to prior art; at the end of above-mentioned shank 2, protection handle 8 is installed; this protection handle 8 is preferably sleeved on water flowing out structure chamber 7 and radio frequency (RF) coaxial connector 3; and for convenience of operation, also above-mentioned control knob 6 also can be arranged on protection handle 8.
Further, an embodiment who is more preferably for technical solution problem in the present invention, for ease of the setting of above-mentioned inlet channel 11 and water outlet 12, preferably be installed into water pipe 13 in the inside of above-mentioned shank 2, and this water inlet pipe 13 being sleeved on to the outside of coaxial cable 4, the gap between the inwall of water inlet pipe 13 and the outer wall of coaxial cable 4 is as above-mentioned inlet channel 11; Also be set with aqueduct 14 in the outside of this water inlet pipe 13, and gap between the outer wall of aqueduct 14 and the inwall of shank 2 is as water outlet 12, above-mentioned capillary tube 9 is arranged in the gap between the outer wall of aqueduct 14 and the inwall of shank 2 simultaneously again.Cooling water flow is entered the inlet channel 11 of shank 2 inside by aqueduct 14, then is flowed out by water outlet 12, and discharges via the water flowing out structure chamber 7 of shank 2 ends, circulates with this.
In the process of radiation, on aciculiform antenna, form instruction for ease of producing at irradiator 1; preferably set up microwave output indicator 5 at protection handle 8 again; this display lamp can directly use light emitting diode; and by the electrode access radio frequency (RF) coaxial connector 3 of aforementioned microwave output indicator 5, for lighting after radio frequency (RF) coaxial connector 3 conductings.
The present invention is that brand-new a kind of front end has approximately 2.1 millimeters of micropore for liquid infusion, diameter 14G(), high efficiency (standing-wave ratio is less than 1.5), high tolerance power (the most advanced and sophisticated irradiator 80W of place) water cooling microwave ablation aciculiform antenna, can prevent front end carbonization by pump pickle, expand ablation range, simultaneously can be for the injection of medicine, improve curative effect, for the ablation progress of large tumor lays the first stone.
In the above-described embodiment, shank 2 can adopt thin-walled overcoat 304 stainless steel tubes, water inlet pipe 13 can adopt the cooling water inlet pipe of thin-walled 304 rustless steel, coaxial cable 4 can adopt the coaxial cable of ultrafine diameter (for example diameter is the cable of 3 to 8 millimeters), the aciculiform radiator cover 15 of above-mentioned shank 2 front ends forms for the super sharp ceramic composite processing and manufacturing of cone high strength, to improve the transmitting power of tolerance microwave source.
And except above-mentioned, also it should be noted that " embodiment ", " another embodiment ", " embodiment " etc. that spoken of in this manual, refer in conjunction with specific features, structure or the feature of this embodiment description and be included at least one embodiment of the application's generality description.In description, multiple local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is to realize this feature, structure or feature in conjunction with other embodiment also to fall within the scope of the invention.
Although with reference to multiple explanatory embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiments, within these amendments and embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (9)
1. the injection-type microwave aciculiform antenna for tumour ablation treating, it is characterized in that: described aciculiform antenna comprises irradiator (1), aciculiform radiator cover (15) is installed on described irradiator (1), described irradiator (1) is arranged on the front end of shank (2), and the rear end of shank (2) is also provided with radio frequency (RF) coaxial connector (3), the inside of described shank (2) is also provided with coaxial cable (4), and described coaxial cable (4) connects respectively irradiator (1) and radio frequency (RF) coaxial connector (3), for accessing microwave source by radio frequency (RF) coaxial connector (3), the microwave that microwave source produces passes through successively radio frequency (RF) coaxial connector (3) and transfers to irradiator (1) with coaxial cable (4), and then generation radiation,
Described radio frequency (RF) coaxial connector (3) is also connected with control knob (6), for controlled conducting and the disconnection of radio frequency (RF) coaxial connector (3) by control knob (6);
Described shank (2) inside is also provided with inlet channel (11) and water outlet (12), cooling for irradiator (1) and shank (2) being carried out at radiation generating process, described water outlet (12) is also connected with the water flowing out structure chamber (7) of shank (2) end;
In described water outlet (12), be also provided with the capillary tube (9) for injecting, near upper near irradiator (1) of described shank (2) is provided with the micropore (10) being connected with described capillary tube (9), on the end of described shank (2), be also provided with injection joint, described injection joint is connected with capillary tube (9), discharges via capillary tube (9) for the liquid being entered by injection joint by micropore (10).
2. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1, is characterized in that: described radio frequency (RF) coaxial connector (3) is connected with microwave source, for irradiator (1) the output microwave to shank (2) front end by microwave source.
3. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1, it is characterized in that: the inside of upper micropore (10) front end of described shank (2) is also provided with water blockoff ring, flow into water outlet (12) for the liquid that prevents capillary tube (9).
4. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 3, is characterized in that: the rear end of described shank (2) is also provided with water blockoff ring and water cavity, and described capillary tube (9) is connected with injection joint by water cavity; Described micropore (10) is at least two, and is all connected with capillary tube (9).
5. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1, is characterized in that: the external diameter of described irradiator (1) is 2 to 8 millimeters.
6. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1; it is characterized in that: the end of described shank (2) is also provided with protection handle (8); described protection handle (8) is sleeved on water flowing out structure chamber (7) and radio frequency (RF) coaxial connector (3) is upper, and control knob (6) is also arranged on protection handle (8).
7. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1, it is characterized in that: the inside of described shank (2) is also provided with water inlet pipe (13), described water inlet pipe (13) is sleeved on the outside of coaxial cable (4), and gap between the inwall of water inlet pipe (13) and the outer wall of coaxial cable (4) forms inlet channel (11); The outside of described water inlet pipe (13) is also set with aqueduct (14), gap between the inwall of the outer wall of described aqueduct (14) and shank (2) forms water channel (12), and described capillary tube (9) is arranged in the gap between the outer wall of aqueduct (14) and the inwall of shank (2).
8. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1; it is characterized in that: on described protection handle (8), be also provided with microwave output indicator (5); the electrode access radio frequency (RF) coaxial connector (3) of described microwave output indicator (5), for lighting after radio frequency (RF) coaxial connector (3) conducting.
9. the injection-type microwave aciculiform antenna for tumour ablation treating according to claim 1, is characterized in that: described irradiator (1) be shaped as column.
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| CN201410130313.9A CN103892907A (en) | 2014-04-02 | 2014-04-02 | Injection type aciculiform microwave antenna for tumor ablation treatment |
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| CN201410130313.9A CN103892907A (en) | 2014-04-02 | 2014-04-02 | Injection type aciculiform microwave antenna for tumor ablation treatment |
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Cited By (10)
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| CN104027168A (en) * | 2014-06-20 | 2014-09-10 | 章建全 | Microwave ablation needle antenna with infusion structure for curing cyst |
| CN104688335A (en) * | 2015-03-16 | 2015-06-10 | 郑加生 | Microwave ablation antenna for large hepatic cellular cancer treatment |
| CN104720892A (en) * | 2015-03-16 | 2015-06-24 | 李晓光 | Microwave ablation antenna used for cystic tumor ablation therapy |
| CN105769339A (en) * | 2016-04-27 | 2016-07-20 | 南京康友医疗科技有限公司 | Water-cooling microwave tissue coagulator |
| CN106798594A (en) * | 2017-02-15 | 2017-06-06 | 尚敏杰 | Microwave melt needle |
| WO2017185981A1 (en) * | 2016-04-29 | 2017-11-02 | 周星 | Radiofrequency ablation electrode and system with local infiltration anesthesia function |
| CN108309444A (en) * | 2018-03-30 | 2018-07-24 | 广东百德医疗有限公司 | A kind of fluid injection and wicking structure suitable for microwave melt needle |
| CN108992165A (en) * | 2018-04-10 | 2018-12-14 | 广东百德医疗有限公司 | A kind of water-cooling structure of the soft microwave melt needle of penetration type half |
| CN109394340A (en) * | 2018-10-26 | 2019-03-01 | 广东百德医疗有限公司 | A kind of high performance water cooling microwave melt needle with microwave power control switch |
| US10842560B2 (en) | 2017-09-08 | 2020-11-24 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104027168A (en) * | 2014-06-20 | 2014-09-10 | 章建全 | Microwave ablation needle antenna with infusion structure for curing cyst |
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| US10842560B2 (en) | 2017-09-08 | 2020-11-24 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
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| CN108309444A (en) * | 2018-03-30 | 2018-07-24 | 广东百德医疗有限公司 | A kind of fluid injection and wicking structure suitable for microwave melt needle |
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| CN109394340A (en) * | 2018-10-26 | 2019-03-01 | 广东百德医疗有限公司 | A kind of high performance water cooling microwave melt needle with microwave power control switch |
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Application publication date: 20140702 |