CN104983464A - Microwave ablation antenna with internally-arranged pipelines - Google Patents
Microwave ablation antenna with internally-arranged pipelines Download PDFInfo
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- CN104983464A CN104983464A CN201510299047.7A CN201510299047A CN104983464A CN 104983464 A CN104983464 A CN 104983464A CN 201510299047 A CN201510299047 A CN 201510299047A CN 104983464 A CN104983464 A CN 104983464A
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Abstract
The invention discloses a microwave ablation antenna with internally-arranged pipelines. The microwave ablation antenna with the internally-arranged pipelines comprises a microwave radiation antenna head 1, a matched insulation sleeve 2, an antenna mast 3, a microwave transmission cable 4, a handle and a coaxial connector 7. The inner pipeline 5 in the antenna mast 3 is communicated with the center pipeline 12 and a side through hole 13 in the microwave radiation antenna head 1. One end of the inner pipeline 5 is in butt joint with the center pipeline 12 and the other end of the inner pipeline 5 is an outer pipeline joint 8 located on the handle 6. The side through hole 13 is located on the side face of the microwave radiation antenna head 1. The injection function of the ablation antenna is achieved through the outer pipeline joint 8 via the inner pipeline 5, the center pipeline 12 and the side through hole 13. Living tissue cells are extracted through the side through hole 13 on the microwave radiation antenna head 1 into the center pipeline 12, the inner pipeline 5 and the outer pipeline joint 8.
Description
Technical field
A kind of multifunction microwave that the present invention relates to medical field melts antenna, particularly relate to the hollow pipe that a kind of inside possesses one or more connection aerial head, for the microwave ablation antenna of the function such as extraction of injecting narcotic, chemotherapeutics, chemical ablation medicine, contrast agent, living tissue cells in tumour ablation treating process.
Background technology
Microwave Coagulation Therapy technology under image-guided oneself become a kind of method of minimally-invasive treatment tumor, after microwave ablation antenna percutaneous puncture to tumor focus position.The microwave energy that microwave ablation therapeutic equipment is launched is sent to through transmission cable and melts antenna, by melting day bundle of lines microwave energy to tumor focus tissue.The whirling vibration under the effect of microwave field of ion in lesion tissue, polar water molecules, phase mutual friction produce high temperature instantaneously, make the deactivation of tumor cell Clinical Global.
Domestic microwave ablation tumor technology, through the clinical application research of more than ten years, all maintains the leading position at present in the basic research and clinical research of correlation technique.From experimentation to clinical practice, microwave thermal ablation tumor oneself show the clear superiority of this technology: heat of ablation efficiency is high, programming rate fast, high-temperature hot field distribution is even, tumor area is thoroughly downright bad, normal tissue damage is little, without the toxic and side effects of chemotherapy, radiotherapy, and the outstanding advantages such as the antineoplastic immune of enhancing body can be activated.
But existing microwave ablation antenna also exists following weak point: current microwave ablation antenna function is single, only can realize tumor coagulation necrosis or local hemostatic effect.Over the course for the treatment of, as therapentic part need carry out other auxiliary treatment, as injection chemotherapeutics, injection site anaesthetic, chemical ablation medicine, contrast agent, living tissue cells inspection etc., also need the surgical instrument such as other puncture biopsy needle, PTC puncture needle.So both add the complexity of operation, in turn increase wound and the clinical risk of operation.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, a kind of microwave ablation antenna with built-in pipe is provided, pass through built-in pipe, realization, to the drug injection (local anesthetic, ancillary drug, chemical ablation medicine, contrast agent etc.) of tumor and the function extracting living tissue cells, has been expanded and has been melted antenna using function.
The present invention adopts following technical scheme:
With a microwave ablation antenna for built-in pipe, comprise and being made up of antenna for radiating microwave head 1, coupling insulation sleeve 2, mast 3, microwave transmission cable 4, handle 6, coaxial connector 7.
Microwave transmission cable 4 is placed in mast 3, antenna for radiating microwave head 1 is connected with the inner wire of microwave transmission cable 4 one end, the other end of microwave transmission cable 4 is connected with coaxial connector 7, microwave power signal is inputted by coaxial connector 7, be transferred to antenna for radiating microwave head 1 by microwave transmission cable 4, antenna for radiating microwave head 1 microwave radiation is in the tumor tissues for the treatment of; Coupling insulation sleeve 2 plays impedance matching and electric insulation effect between antenna for radiating microwave head 1 and mast 3; The end of mast 3 is connected with handle 6.
There are central tube 12 and side through hole 13 in described antenna for radiating microwave head 1, in described mast 3, have interior conduit 5.
Interior conduit 5 in mast 3 communicates with the central tube 12 in antenna for radiating microwave head 1, side through hole 13, and one end of interior conduit 5 is docked with central tube 12, and the other end of interior conduit 5 is pipeline external tapping 8, and it is positioned at handle 6 place; Described side through hole 13 is positioned at the side of antenna for radiating microwave head 1, and has multiple, as can be 2 or 4.
The function of injection melting antenna is expelled to treated tissue to realize through interior conduit 5, central tube 12 and side through hole 13 by pipeline external tapping 8; Extract living tissue cells function be enter central tube 12 by the side through hole 13 on antenna for radiating microwave head 1, interior conduit 5 arrives pipeline external tapping 8.
Described microwave transmission cable 4 can adopt general microwave coaxial cable, also can adopt the semi-rigid coaxial cable of boring; It is made up of outer conductor 41, dielectric layer 42, inner wire 43, interior conduit 5; Outer conductor 41 uses material for copper, and dielectric layer 42 can adopt the polytetrafluoroethylmaterial material that heatproof is high, dielectric constant is high, and inner wire 43 is designed to boring, as interior conduit 5; Inner wire 43 can adopt medical stainless steel capillary tube as interior pipe, outside copper facing, and the skin of copper plates silver or gold again.
Described pipeline external tapping 8 is positioned at handle 6 end, is structure as a whole with coaxial connector 7.
Described interior conduit 5 can also be positioned at the outside of microwave transmission cable 4, and the side connecting hole 15 of the central tube 12 of one end docking of interior conduit 5, the other end of interior conduit 5 is pipeline external tapping 8, and it is positioned at handle 6 side.
The microwave ablation antenna having built-in pipe of the present invention, can there be two interior conduits 5 its inside, one end of two interior conduits 5 all with central tube 12 and side through hole 13 through, the other end of two interior conduits 5 is pipeline external tapping 8, one is positioned at handle 6 end, be structure as a whole with coaxial connector 7, another is positioned at handle 6 side.
Compared with prior art, invention tool of the present invention has the following advantages:
1, the microwave ablation antenna with built-in pipe of the present invention, melts the basic function that antenna can complete tumour ablation, can complete again the function of injection and histiocyte extraction.Make the operation technique of former need many apparatuses multi-step, only need a microwave ablation antenna to complete.Fully expand the function melting antenna, decreased the number of times of puncture, reduce clinical treatment wound and risk.
2, of the present inventionly melt antenna, the major advantage of the injection that built-in pipe possesses and living tissue cells extract function is as follows:
(1) drug injection chemical ablation medicine: as percutaneous ethanol injectionl, can make chemical ablation and heating ablation combine like this, improves treatment curative effect and protection peripheral organs.
(2) microwave ablation injecting normal saline or water for injection simultaneously, can lower the coking extent of ablation areas, expand ablation range.
(3) local anesthetic injection: the pain alleviating therapentic part, improves patient to the toleration of Microwave Coagulation Therapy.
(4) contrast-medium injection: can judge accurately the size of focus, position, with the relation of adjacent organs, and by imaging observation topical therapeutic effect.
(5) chemotherapeutics: injection chemotherapeutics, chemotherapeutics is combined the effect can playing thermochemotherapy with microwave ablation, strengthen tumor cell to the sensitivity of chemotherapeutics.In addition, the non-thermal effect of microwave can change the permeability of tumor cell membrane, is conducive to chemotherapeutics and is diffused in tumor cell.
(6) tumor locus cell tissue extracts: the effect replacing PTC biopsy needle, extracts therapentic part tumor tissues and carries out cytological analysis.
Accompanying drawing explanation
Fig. 1 is one of sectional view of the present invention.
Fig. 2 is sectional view two of the present invention.
Fig. 3 is one of aerial head sectional view of the present invention.
Fig. 4 is aerial head sectional view two of the present invention.
Fig. 5 is microwave transmission cable sectional view of the present invention.
Fig. 6 is microwave ablation antenna embodiment 1 built-in pipe schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
As shown in Figure 1 and Figure 2.Microwave ablation antenna is made up of antenna for radiating microwave head 1, coupling insulation sleeve 2, mast 3, microwave transmission cable 4, interior conduit 5, handle 6, coaxial connector 7, pipeline external tapping 8, and pipe joint device 9 docks with coaxial connector 7.
Antenna for radiating microwave head 1 is connected with the inner wire of microwave transmission cable 4, microwave power signal is inputted by coaxial connector 7, be transferred to antenna for radiating microwave head 1 by microwave transmission cable 4, finally by antenna for radiating microwave head 1 microwave energy in tumor tissues.Coupling insulation sleeve 2 plays impedance matching and electric insulation effect between antenna for radiating microwave head 1 and mast 3, coupling insulation sleeve 2 adopts and meets biocompatibility requirement and resistant to elevated temperatures material, can adopt organic material, as politef, also inorganic material can be adopted, as pottery.Mast 3 adopts stainless steel material or titanium alloy material, mast plated surface adherent layer.The end of mast 3 is connected with handle 6, and handle 6, for operator's handheld component, can adopt engineering plastics injection mo(u)lding, as materials such as ABS, PVC.
Embodiment 1
Shown in figure as left in Fig. 3, the antenna for radiating microwave head 1 of present case is made up of step 11, central tube 12, side through hole 13, antenna pointed end 14.Step 11 is for the welding of antenna for radiating microwave head 1 and transmission cable 4, and the central tube 12 of antenna for radiating microwave head 1 is communicated with each side through hole 13 of antenna pointed end 14.The quantity of side through hole 13 can have four, six, eight etc.Side through hole 13 can be vertical with central tube 12, also can arrangement angled with central tube 12, shown in figure as right in Fig. 3.Antenna for radiating microwave head 1 adopts the medical alloy material of high strength and high conductivity, surface coarsening, sprays high temperature resistant, antiseized glutinous material.The major function of antenna pointed end 14 is puncture, and for improving the sharpness of puncture, the structure of antenna point 14 can adopt Three Diamond, conical etc.
As shown in Figure 5, microwave transmission cable 4 is made up of outer conductor 41, dielectric layer 42, inner wire 43, interior conduit 5.Microwave transmission cable 4 adopts semi-rigid coaxial cable, and outer conductor 41 uses material for copper, and dielectric layer 42 can adopt the polytetrafluoroethylmaterial material that heatproof is high, dielectric constant is high, to meet the requirement of transmission cable 4 impedance matching.The frequency of oscillation that microwave ablation uses is all at more than 300MHz, high-frequency microwave signal transmission has kelvin effect, namely, when high-frequency alternating current is by inner wire 43, electric current will concentrate on inner wire 43 surface and flow through, but not be evenly distributed in the sectional area of whole inner wire 43.Characteristic accordingly, the inner wire 43 of the microwave transmission cable 4 of present case is designed to boring, melts the interior conduit 5 of antenna as present case.Inner wire 43 can adopt medical stainless steel capillary tube as interior pipe, and outside plates certain thickness copper, and the skin of copper plates silver or gold again, to increase the electric conductivity of inner wire 43.
An inner wire 43 front end part for transmission cable 4 stretches in central tube 12, and inner wire 43 welds at step 11 place of antenna for radiating microwave head 1, and the rear end of inner wire 43 is connected with the inner core 73 of coaxial connector 7, as shown in Figure 6.Coaxial connector 7 is by shell 71, and matched media layer 72, inner core 73 form, and the shell 71 of coaxial connector 7 is the outer conductor of adapter, plays the effects such as support, shielding.Matched media layer 72 is for the impedance matching between shell 71 and inner core 73 and electric insulation.Inner core 73 is the inner wire of adapter, and it has also possessed the function of the pipeline external tapping 8 melting built-in antenna pipeline except having the effect of microwave transmission.Be through-hole form in the middle of inner core 73, be connected with the interior conduit 5 of transmission cable 4.
Pipe joint device 9 is made up of input interface 91, transfer tube 92, connectivity port 93, and pipeline external tapping 8 is inserted in connectivity port 93, makes pipe joint device 9 and melts built-in antenna pipeline communication.Pipe joint device 9 is the transition apparatus melting built-in antenna pipeline and External infusion utensil, because the pipeline external tapping 8 of present case and the inner core 73 of coaxial connector 7 are same component, so when needs injectable drug and extraction are organized, the connectivity port 93 of pipe joint device 9 is inserted into pipeline external tapping 8, and External infusion utensil is connected to input interface 91.The medicine injected enters by pipe joint device 9 and melts antenna interior conduit 5 to antenna for radiating microwave head 1, or extraction organizes the antenna for radiating microwave head 1 that antenna is melted in suction to arrive pipe joint device 9 through interior conduit 5.Connectivity port 93 and coaxial connector 7 profile and structure matching design, with convenient, connect reliably.Transfer tube 92 is extension, can adopt PVC, the plastic flexible pipe of the materials such as TPE.When needs carry out Microwave Coagulation Therapy, take off pipe joint device 9, connect microwave ablation connecting line.
Embodiment 2
Present case embodiment removes the following part that describes and is different from case study on implementation 1, and other is all identical.
The antenna for radiating microwave head 1 of present case is made up of step 11, central tube 12, side through hole 13, antenna point 14, interior conduit side connecting hole 15, as shown in Figure 4.The antenna for radiating microwave head 1 of present case adds interior conduit side connecting hole 15, and one end of interior conduit 5 is connected with interior conduit side connecting hole 15, and one end is connected to pipeline external tapping 8 in addition, as shown in Figure 2.The interior conduit 5 of present case adopts pipe special, and independent of microwave transmission cable 4, it is arranged between microwave transmission cable 4 and mast 3 endoporus, is drawn by pipeline external tapping 8 by the side of handle 6.Interior conduit 5 can use the resistant to elevated temperatures materials such as politef.Present case microwave ablation and drug injection or tissue extract non-interference, while melting, can carry out medicine or liquid infusion, greatly reduce the coking extent of ablation areas, expand ablation range, improve therapeutic effect.The interior conduit side connecting hole 15 of present case and interior conduit 5 can have one group, also can form by many groups, are finally pooled to pipeline external tapping 8, can increase the sectional area melting built-in antenna pipeline, resistance when reducing injection or extract.Central tube 12 can adopt the through mode identical with embodiment 1, shown in figure as left in Fig. 4.Also can adopt the mode adopting partition between central tube 12 and coaxial cable, block shown in 16 in figure as right in Fig. 4.
The built-in pipe form of embodiments of the invention 1 and embodiment 2 also can exist one simultaneously and melt in antenna, namely there are two built-in pipes.
Claims (5)
1., with a microwave ablation antenna for built-in pipe, comprise and being made up of antenna for radiating microwave head (1), coupling insulation sleeve (2), mast (3), microwave transmission cable (4), handle (6), coaxial connector (7);
Microwave transmission cable (4) is placed in mast (3), antenna for radiating microwave head (1) is connected with the inner wire of microwave transmission cable (4) one end, the other end of microwave transmission cable (4) is connected with coaxial connector (7), microwave power signal is inputted by coaxial connector (7), be transferred to antenna for radiating microwave head (1) by microwave transmission cable (4), antenna for radiating microwave head (1) microwave radiation is in the tumor tissues for the treatment of; Coupling insulation sleeve (2) plays impedance matching and electric insulation effect between antenna for radiating microwave head (1) and mast (3); The end of mast (3) is connected with handle (6);
It is characterized in that having central tube (12) and side through hole (13) in described antenna for radiating microwave head (1), in described mast (3), have interior conduit (5);
Interior conduit (5) in mast (3) communicates with the central tube (12) in antenna for radiating microwave head (1), side through hole (13), one end of interior conduit (5) is docked with central tube (12), the other end of interior conduit (5) is pipeline external tapping (8), and it is positioned at handle (6) place; Described side through hole (13) is positioned at the side of antenna for radiating microwave head (1), and has multiple;
The function of injection melting antenna is expelled to treated tissue to realize through interior conduit (5), central tube (12) and side through hole (13) by pipeline external tapping (8); Extracting living tissue cells function is enter central tube (12), interior conduit (5) arrival pipeline external tapping (8) by the side through hole (13) on antenna for radiating microwave head (1).
2. a kind of microwave ablation antenna with built-in pipe according to claim 1, is characterized in that described microwave transmission cable (4) adopts the semi-rigid coaxial cable of boring; It is made up of outer conductor (41), dielectric layer (42), inner wire (43), interior conduit (5); Outer conductor (41) uses material to be copper, and dielectric layer 42 can adopt the polytetrafluoroethylmaterial material that heatproof is high, dielectric constant is high, and inner wire (43) is designed to boring, as interior conduit (5); Inner wire (43) can adopt medical stainless steel capillary tube as interior pipe, outside copper facing, and the skin of copper plates silver or gold again;
Described pipeline external tapping (8) is positioned at handle (6) end, is structure as a whole with coaxial connector (7).
3. a kind of microwave ablation antenna with built-in pipe according to claim 1, it is characterized in that described interior conduit (5) is positioned at the outside of microwave transmission cable (4), the side connecting hole (15) of the central tube (12) of one end docking of interior conduit (5), the other end of interior conduit (5) is pipeline external tapping (8), and it is positioned at handle (6) side.
4. a kind of microwave ablation antenna with built-in pipe according to claim 2, it is characterized in that an interior conduit (5) in addition, it is positioned at the outside of microwave transmission cable (4), the side connecting hole (15) of the central tube (12) of one end docking of this interior conduit (5), the other end of this interior conduit (5) is pipeline external tapping (8), and it is positioned at handle (6) side.
5., according to a kind of microwave ablation antenna with built-in pipe one of Claims 1-4 Suo Shu, it is characterized in that the side through hole (13) of described antenna for radiating microwave head (1) can have 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510299047.7A CN104983464A (en) | 2015-06-03 | 2015-06-03 | Microwave ablation antenna with internally-arranged pipelines |
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| CN201510299047.7A CN104983464A (en) | 2015-06-03 | 2015-06-03 | Microwave ablation antenna with internally-arranged pipelines |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2017185981A1 (en) * | 2016-04-29 | 2017-11-02 | 周星 | Radiofrequency ablation electrode and system with local infiltration anesthesia function |
| CN107865690A (en) * | 2017-11-03 | 2018-04-03 | 浙江大学医学院附属第医院 | Rotatable microwave needle under a kind of laparoscope |
| CN108523990A (en) * | 2018-01-30 | 2018-09-14 | 张丽娜 | A kind of microwave ablation therapeutic equipment for treating fibroid |
| 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 |
| CN110312485A (en) * | 2017-05-04 | 2019-10-08 | 科瑞欧医疗有限公司 | Electrosurgery unit for ablation of tissue |
| CN113100927A (en) * | 2021-04-08 | 2021-07-13 | 电子科技大学 | Novel directional microwave ablation antenna based on substrate integrated coaxial cable |
| CN113576657A (en) * | 2021-05-08 | 2021-11-02 | 南京瑞波医学科技有限公司 | Medical ablation antenna |
-
2015
- 2015-06-03 CN CN201510299047.7A patent/CN104983464A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105769339B (en) * | 2016-04-27 | 2019-02-22 | 南京康友医疗科技有限公司 | A kind of water cooling microwave coagulation treatment |
| WO2017185981A1 (en) * | 2016-04-29 | 2017-11-02 | 周星 | Radiofrequency ablation electrode and system with local infiltration anesthesia function |
| CN107320177A (en) * | 2016-04-29 | 2017-11-07 | 周星 | Radio-frequency ablation electrode and system with local infiltration anesthesia function |
| CN110312485A (en) * | 2017-05-04 | 2019-10-08 | 科瑞欧医疗有限公司 | Electrosurgery unit for ablation of tissue |
| CN110312485B (en) * | 2017-05-04 | 2022-10-11 | 科瑞欧医疗有限公司 | Electrosurgical device for tissue ablation |
| CN107865690A (en) * | 2017-11-03 | 2018-04-03 | 浙江大学医学院附属第医院 | Rotatable microwave needle under a kind of laparoscope |
| CN108523990A (en) * | 2018-01-30 | 2018-09-14 | 张丽娜 | A kind of microwave ablation therapeutic equipment for treating fibroid |
| 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 |
| CN113100927A (en) * | 2021-04-08 | 2021-07-13 | 电子科技大学 | Novel directional microwave ablation antenna based on substrate integrated coaxial cable |
| CN113576657A (en) * | 2021-05-08 | 2021-11-02 | 南京瑞波医学科技有限公司 | Medical ablation antenna |
| CN113576657B (en) * | 2021-05-08 | 2024-05-24 | 南京瑞波医学科技有限公司 | Medical ablation antenna |
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Application publication date: 20151021 |