CN204708984U - A kind of high-intensity microwave ablation needle - Google Patents
A kind of high-intensity microwave ablation needle Download PDFInfo
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- CN204708984U CN204708984U CN201520256895.5U CN201520256895U CN204708984U CN 204708984 U CN204708984 U CN 204708984U CN 201520256895 U CN201520256895 U CN 201520256895U CN 204708984 U CN204708984 U CN 204708984U
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Abstract
The utility model discloses a kind of high-intensity microwave ablation needle, it comprises and being made up of active antenna (1), coupling insulation sleeve (2), microwave transmission cable (3), shank (4), handle (5); Active antenna (1) is connected with the inner wire of microwave transmission cable (3), and coupling insulation sleeve (2) plays impedance matching and electric insulation effect between active antenna (1) and shank (4).The pottery of coupling insulation sleeve (2) employing high strength, good toughness, low-loss, high-k is as the impedance matching between active antenna (1) and shank (4) and insulant.The T stage rank place of coupling insulation sleeve (2) and shank (4) junction adopts R type round-corner transition structure, avoids the fault of construction that right angle transition easily fractures.This utility model improves the intensity of ablation needle syringe needle, and has superperformance impedance matching.
Description
Technical field
This utility model relates to a kind of high-intensity microwave ablation needle, particularly relates to a kind of microwave melt needle for tumor micro-wound treatment of ceramic material.
Background technology
Microwave Coagulation Therapy under image-guided, after microwave melt needle percutaneous puncture to tumor focus position.The microwave energy that microwave ablation therapeutic equipment is launched is sent to ablation needle through ablation line and is radiated tumor focus tissue, microwave makes the ion in tissue, polar water molecules whirling vibration, phase mutual friction and produce heat effect, tumor cell deactivation is made, to reach oncotherapy object by the form of heat.
Domestic microwave ablation tumor, through the clinical application research of more than ten years, is all in first place in the world at present in the basic research and clinical research of correlation technique.Time more than ten years from experimentation to clinical practice, microwave thermal ablation tumor oneself show the clear superiority of this technology: Wicresoft's (only needing broken skin 2-3mm), safety, 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
Microwave Coagulation Therapy system comprises microwave ablation therapeutic equipment and microwave melt needle.Be by the transmitting position (syringe needle) of ablation needle safety, the tumor locus being punctured to treatment accurately in microwave ablation operation, need to avoid rib, blood vessel, important organ etc. in piercing process.
There is following weak point in existing microwave melt needle:
Coupling insulant between the syringe needle of current microwave melt needle and shank is mainly organic material politef, mainly there is following weak point.
1, the image-guided equipment of microwave melt needle puncture mainly contains ultrasonic, CT, MRI.Ultrasonic guidance is that real time imaging is followed the tracks of.CT, MRI or PET-CT guiding puncture is that non-real-time images guides, and needs first by scanning, planning puncture path.By the path of advance planning, be blindly punctured to predetermined tumor tissues.Use CT, MRI or PET-C scanography puncture position whether correct after puncture again.So repeatedly, tumor locus need be treated until be punctured to.In blind piercing process, encounter the tissue that quality is harder, because coupling insulant polytetrafluoro quality is partially soft, the phenomenon that syringe needle can bend or disconnect.The bending puncture direction that can cause of syringe needle changes, and can not once arrive puncture target site.Also may injure other normal structure, and repeated puncture increases wound face.
If the risk of the not enough and broken needle of output can be there is in the ablation needle continual cure that 2, syringe needle bends because syringe needle bending after, cause syringe needle place impedance mismatching, standing wave becomes large, and the power overwhelming majority arriving syringe needle reflects at impedance mismatching place; And sharply rise along with the increase temperature for the treatment of time in syringe needle impedance mismatching place, due to the most high-temperature resistant 280 DEG C of polytetrafluoroethylmaterial material, high temperature can cause polytetrafluoroethylmaterial material to puncture, and finally causes syringe needle and shank Arcing, blows syringe needle.
3, polytetrafluoro material ground is partially soft, and current ablation needle needle section bit architecture can only be a bit of as impedance matching and insulation with it, if oversize, can affect syringe needle intensity.The position major part of syringe needle leading portion heating is metal material, and after loading power, microwave can make the metal of syringe needle generate heat rapidly, produces the high temperature higher than 200 DEG C.Cause organizing coking serious against metal position, the tissue after coking can hinder the transmitting of microwave, increases reflection power, affects therapeutic effect.
Utility model content
The purpose of this utility model is the deficiency overcoming prior art, provides a kind of high strength hard ablation needle, by improving and optimizing syringe needle impedance matching and insulant and needle head structure, improves syringe needle intensity.When solving the puncture of tumor syringe needle bend or disconnect, clinical treatment risk that impedance matching and insulant heatproof deficiency cause syringe needle to drop.And alleviate carbonizing zone, expand ablation range.
This utility model adopts following technical scheme:
This utility model ablation needle is made up of active antenna 1, coupling insulation sleeve 2, microwave transmission cable 3, shank 4, handle 5, as shown in Figure 1 and Figure 2.
Active antenna 1 is connected with the inner wire of microwave transmission cable 3, and microwave power signal is transferred to active antenna 1 by microwave transmission cable 3, and microwave is radiated in treatment tumor tissues by active antenna 1.Coupling insulation sleeve 2 plays impedance matching and electric insulation effect between active antenna 1 and shank 4.The end of shank 4 is connected with handle 5.
Coupling insulation sleeve 2 adopt high strength, good toughness, low-loss, high-k pottery as the impedance matching between active antenna 1 and shank 4 and insulant.Namely substantially increase the intensity at ablation needle Microwave emission position, improve resistance to elevated temperatures again, and the coking district reduced, expand ablation range.The T stage rank place of coupling insulation sleeve 2 and shank 4 junction adopts R type round-corner transition structure, as shown in 5 of Fig. 3, avoids the fault of construction that right angle transition easily fractures.
Compared with prior art, this utility model utility model tool has the following advantages:
1, the pottery of ablation needle employing high strength of the present utility model, good toughness, low-loss, high-k is as the impedance matching between syringe needle and shank and insulant, improve the intensity of ablation needle syringe needle, avoid clinical piercing needle bend with broken needle phenomenon.
2, ablation needle of the present utility model and tumor tissues have superperformance impedance matching, alleviate carbonizing degree between syringe needle position, tissue, improve the radiation efficiency of ablation needle, expand ablation range.
3, the ceramic material material that ablation needle of the present utility model adopts has resistant to elevated temperatures characteristic, avoids the impedance mismatch caused as reasons such as loopers in ablation procedure to burn out the risk of dielectric.
Accompanying drawing explanation
Fig. 1 is microwave melt needle embodiment 1 schematic diagram of the present utility model
Fig. 2 is microwave melt needle embodiment 2 schematic diagram of the present utility model
Fig. 3 is microwave melt needle of the present utility model coupling insulation sleeve and shank structure chart
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, this utility model is described in further detail.
This utility model ablation needle is made up of active antenna 1, coupling insulation sleeve 2, microwave transmission cable 3, shank 4, handle 5, as shown in Figure 1 and Figure 2.
Active antenna 1 is connected with the inner wire of microwave transmission cable 3, and microwave power signal is transferred to active antenna 1 by microwave transmission cable 3, and microwave is radiated in treatment tumor tissues by active antenna 1.Coupling insulation sleeve 2 plays impedance matching and electric insulation effect between active antenna 1 and shank 4.The end of shank 4 is connected with handle 5.
Embodiment 1:
The active antenna 1 of present case adopts the medical alloy material of high strength and high conductivity, bare front end part to be the needle point of ablation needle, as shown in Figure 2.Active antenna 1 surface coarsening, spray high temperature resistant, antiseized glutinous material, needle point structure can adopt three diamond patterns, conical etc.The exposed structure of needle point that present case active antenna 1 adopts is convenient under B ultrasonic guides, and metal needle point, by B ultrasonic image real-time visualization, knows the particular location melting needle point.But needle point exposed part is as far as possible short, to reduce the contact area of metallic member and treated tissue, reduce and organize coking extent.Coupling insulation sleeve 2 adopts resistant to elevated temperatures inorganic ceramic material, and the ceramic material that ablation needle uses not only intensity wants high, and wants good toughness, can adopt as zirconia ceramics.Coupling insulation sleeve 2 and T stage rank place, shank 4 junction adopt R type round-corner transition structure.Microwave transmission cable 3 is through coupling insulation sleeve 2 endoporus, shank 4 inside is inserted on the T stage rank of coupling insulation sleeve 2, and in order to improve the intensity on the T stage rank of coupling insulation sleeve 2, structure adopts R type round-corner transition structure herein, as shown in 5 of Fig. 3, avoid the fault of construction that right angle easily fractures.Because the coupling inside and outside footpath of insulation sleeve 2 is little, high to dimension precision requirement, this utility model adopts the molding of hot die-casting molding method.
Embodiment 2:
The coupling insulation sleeve 2 of present case adopts front end full-closed structure, wherein comprises the needle point position of puncture, as shown in Figure 2.The shapes such as needle point structure can adopt three diamond patterns, conical.Present case pin active antenna 1 is arranged in coupling insulation sleeve 2 endoporus, can not contact, sufficiently lower when melting and organize coking extent, expand ablation range with treated tissue.The material that the coupling insulation sleeve 2 of present case adopts, processing method are with embodiment 1.
Claims (2)
1. a high-intensity microwave ablation needle, its feature comprises and being made up of active antenna (1), coupling insulation sleeve (2), microwave transmission cable (3), shank (4), handle (5);
Described active antenna (1) is connected with the inner wire of microwave transmission cable (3), microwave power signal is transferred to active antenna (1) by microwave transmission cable (3), and microwave is radiated in treatment tumor tissues by active antenna (1);
Described coupling insulation sleeve (2) plays impedance matching and electric insulation effect between active antenna (1) and shank (4);
The end of described shank (4) is connected with handle (5).
2. a kind of high-intensity microwave ablation needle according to claim 1, it is characterized in that described coupling insulation sleeve (2) adopt high strength, good toughness, low-loss, high-k pottery as the impedance matching between active antenna (1) and shank (4) and insulant;
The T stage rank place of described coupling insulation sleeve (2) and shank (4) junction adopts R type round-corner transition structure, avoids the fault of construction that right angle transition easily fractures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256895.5U CN204708984U (en) | 2015-04-27 | 2015-04-27 | A kind of high-intensity microwave ablation needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256895.5U CN204708984U (en) | 2015-04-27 | 2015-04-27 | A kind of high-intensity microwave ablation needle |
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| CN204708984U true CN204708984U (en) | 2015-10-21 |
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| CN201520256895.5U Active CN204708984U (en) | 2015-04-27 | 2015-04-27 | A kind of high-intensity microwave ablation needle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523990A (en) * | 2018-01-30 | 2018-09-14 | 张丽娜 | A kind of microwave ablation therapeutic equipment for treating fibroid |
| CN112773502A (en) * | 2020-11-03 | 2021-05-11 | 安隽医疗科技(南京)有限公司 | Disposable electrode device for hemorrhoid ablation operation |
-
2015
- 2015-04-27 CN CN201520256895.5U patent/CN204708984U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523990A (en) * | 2018-01-30 | 2018-09-14 | 张丽娜 | A kind of microwave ablation therapeutic equipment for treating fibroid |
| CN112773502A (en) * | 2020-11-03 | 2021-05-11 | 安隽医疗科技(南京)有限公司 | Disposable electrode device for hemorrhoid ablation operation |
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