CN1331955A - Temperature controlled microwave radiator - Google Patents
Temperature controlled microwave radiator Download PDFInfo
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- CN1331955A CN1331955A CN 00109817 CN00109817A CN1331955A CN 1331955 A CN1331955 A CN 1331955A CN 00109817 CN00109817 CN 00109817 CN 00109817 A CN00109817 A CN 00109817A CN 1331955 A CN1331955 A CN 1331955A
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- antenna
- irradiator
- earthenware
- heart yearn
- coaxial cable
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Abstract
The present invention belongs to the field of medical equipment. The microwave radiator as an operational equipment consists of shielding tube, hard coaxial cable, temperature sensor, ceramic tube, antenna and antisticking tube. The antenna is a set of fine metal wires arranged around the ceramic tube and parallel to the core wire and has its inward end connected to the core wire. The present invention has high radiation efficiency and controlled temperature. When the heating power is greater, the radiator may be used as cutter and has less power loss, no damage to health tissue, no adhesion and charring.
Description
The invention belongs to medical instruments field, relate to improvement irradiator in the medical microwave operation apparatus.
At present, liver cancer patient for being unsuitable for undergoing surgery and excising can adopt a kind of non-surgical treatment that has only minor trauma, promptly heats the cancerous protuberance position, form a coagulation necrosis district about 4cm * 3cm around making focus, reach the purpose of eliminating cancerous protuberance.The radio frequency liver cancer treatment instrument that U.S. RADIONICS company produces promptly belongs to this series products.Its shortcoming is: the first, this irradiator frequency of supply 500KHz only, radiation efficiency is low, need bigger exciting power, generally at 80～120 watts, this has not only increased electrical source consumption, more cause the power consumption of mast itself to increase, produce higher temperature rise, the normal structure to the patient causes damage easily.The second, this irradiator does not have synchronous temperature measuring equipment, often causes the temperature of solidification zone too high in the use, adds the structure that does not prevent adhesion between the antenna of this irradiator and the tissue, therefore, in use is easy to stick together and carbonization.
The objective of the invention is: a kind of huge energy of multiple warhead microwave operation, that be operated in super high band irradiator that is used for is provided, overcome the shortcoming of low, the easy adhesion of existing irradiator operating frequency, carbonization, improve the thermal efficiency, reduce wound, improve the success rate of micro-wave therapeutic cancerous protuberance.
Technical solution of the present invention is: a kind of huge energy of multiple warhead irradiator that is used for microwave operation, by shielded-plate tube, in shielded-plate tube rigid coaxial cable, form at the temperature sensor between shielded-plate tube and the rigid coaxial cable, the antiseized cover that is enclosed within earthenware, the antenna that is electrically connected with coaxial cable core wire on the heart yearn of the coaxial cable after peeling off high-frequency dielectric and covers on the antenna outside, it is characterized in that, antenna is one group of metal raw silk rings circumferential arrangement, parallel with heart yearn along earthenware, and its end inwardly keeps being electrically connected with heart yearn.
Advantage of the present invention is:
1, adopt the multi-electrode boundling active antenna structure of super high band power supply, the radiation efficiency height can shorten time of solidified structure.For example adopt the 2450MHz frequency, only 25 watts of power demands, only 5 minutes, can form the spherical coagulation necrosis of the class district of a 4cm * 3cm at affected area, reach the purpose of treatment.
2, adopt heat sensitive sensor control temperature, and it is shielded, make the operating temperature of irradiator controlled, and can realize the size identical property of multiple spot puncture solidification zone.
3, when using big heating power, in the time of for example more than 100 watts, the present invention can be used as cutter and use, particularly the irradiator end is the irradiator of edge of a knife shape, liver etc. is rich in the organs and tissues of blood vessel, and the present invention can be cut tissue by rapid solidification, in cutting, can solidify 3mm following arteries and blood capillary rapidly, not need the secondary hemostasis.
4, the present invention is in operation, no matter solidifies or cuts the phenomenon of the tissue that can not stick together.
5, owing to radiation efficiency height of the present invention, power attenuation is little, so the energy of consumption on mast seldom, and the temperature rise of mast is very low, when skin thrusts internal organs, can not damage normal structure.
6, owing to can control temperature and, thoroughly solve adhesion and carbonization problem to tissue at the antiseized cover of antenna outer setting.
Description of drawings.
Fig. 1 is the structure chart of an embodiment of the present invention.
Fig. 2 is the profile of Fig. 1 near the end.
Fig. 3 is the structure chart of the another kind of embodiment of the present invention.
Fig. 4 is the profile of Fig. 3.
Fig. 5 is the structure chart of the third embodiment of the present invention.
Fig. 6 is the profile of Fig. 5.
Fig. 7 is another kind of antenna assumption diagram.
Fig. 8 is the third antenna assumption diagram.
Fig. 9 is the 4th a kind of antenna assumption diagram.
Below in conjunction with accompanying drawing the present invention is elaborated.
Referring to Fig. 1,2, this is the structural representation of an embodiment of the present invention.The present invention is the irradiator that is used for microwave instrument for operation, becomes huge energy cutter again.Microwave therapy apparatus has microwave to take place and regulating circuit, is connected with irradiator by cable.Whole huge can cutter the composition by the locking nut of handle, mast, connection handle and mast and the irradiator that is positioned at mast one end.Outermost layer of the present invention is a shielded-plate tube 1, and it is a thin-wall metal tubule, and its external diameter is thin more good more, and wound is more little in the operation.Owing to also will hold other parts in the shielded-plate tube, to keep certain rigidity simultaneously, thus also can not be too thin, generally can between 1～30mm, select.Rigid coaxial cable 2 is arranged in the shielded-plate tube 1, its crust is a rigid metal tube, between the crust of shielded-plate tube 1 and rigid coaxial cable 2, temperature sensor 4 is arranged, temperature sensor 4 is connected with thermometric joint on the handle, to the temperature signal of microwave therapy apparatus feedback irradiator by lead.Carry out the regulation and control of temperature by the related circuit in the microwave therapy apparatus.Because temperature control circuit belongs to known technology, does not do repetition here.At antiseized cover 10 of end abutment of shielded-plate tube 1, it is enclosed within on the rigid coaxial cable 2, and the crust and the high-frequency dielectric 3 of the part rigid coaxial cable that antiseized cover is inner are stripped from, and expose one section heart yearn 5.Have an earthenware 8 to be enclosed within on the exposed heart yearn 5, the microwave oscillator antenna 7 that one group of metal raw silk rings parallel with heart yearn 5 constitutes along the circumferential arrangement of earthenware, a tinsel end inwardly is communicated with to the bending of the center of heart yearn 5 and with heart yearn 5 welding.Antenna 7 can be made up of 1～20 pair of metal raw silk rings that is parallel to each other, and the length of antenna 7 is 1～50mm.Antenna 7 is that the tinsel of 0.1～2mm is made by diameter.In general, power is big more, and the diameter of the mast that is adopted is thick more, and the line footpath of antenna is also thick more.For example, for powerful irradiator, the diameter of mast is φ 5～φ 10mm; For the irradiator of mid power, the diameter of mast is φ 4～φ 6mm; For low power irradiator, the diameter of mast can be accomplished below the φ 2mm.From reducing the angle of wound, under the prerequisite that guarantees enough solidification zone sizes, the diameter of mast is the smaller the better.Tabulation provides the specific design parameter value of three embodiment below.
| Sequence number | The mast diameter | They demand pairs | Antenna line footpath | |
| Embodiment | ||||
| 1 | ????φ10mm | ????6 | ????1.0mm | ????15mm |
| | ????φ4mm | ????4 | ????0.3mm | ????10mm |
| | ????φ2mm | ????3 | ????0.2mm | ????7mm |
In order to strengthen the vertical radiant intensity of irradiator, to guarantee coagulation result, avoid recurrence to the tumor bottom, can add a helical antenna in the front of straight line element antenna again, thereby constitute combined antenna.Referring to Fig. 3,4, have in the front of said antenna 7 to be wrapped in helical antenna 9 on the earthenware 8, that be electrically connected with heart yearn 5, the number of turns of helical antenna is 1～200 circle.The line of helical antenna footpath can be with the straight line element antenna similar, the degree of depth requires the number of turns and the size of power determines that power is big more according to the top is solidified, the number of turns can be more more.
Referring to Fig. 5,6, this is the third embodiment of the present invention, the cross section of earthenware 8 is oblateness or rectangle, antenna 7 is arranged around the outer rim of earthenware, the cross section of the cross section of antiseized cover 10 and earthenware 8 adapts, its external end head is edge of a knife shape, and its cross section, inner end is circular, is enclosed within on the rigid coaxial cable 2.The radiance of this structure and the difference of structure shown in Fig. 1,2 mainly are that the cross sectional shape of irradiator is different, become oblate or rectangle or wedge shape section by circular cross-section, make the profile of irradiator look the shape that more resembles a cutter.As for antenna itself and unsubstantial change, only be spread pattern along with the shape in earthenware cross section taken place by along circumferential arrangement to variation along oblate, rectangle or wedge shape arrangement.On radiation effect, stronger than two ends along the intensity of long side radiation.Following table provides three parameter embodiment with irradiator of edge of a knife shape.
| Sequence number | The mast diameter | Sky, side demand pairs | Antenna line footpath | |
| Embodiment | ||||
| 4 | ??φ10mm | ????10 | ??1.0mm | ????22mm |
| | ??φ8mm | ????8 | ??1.0mm | ????20mm |
| Embodiment 6 | ??φ5mm | ????6 | ??0.3mm | ????18mm |
Directly rapid solidification tissue and blood vessel of the structure of embodiment 6 in the last table.The structure of embodiment 4 can directly be solidified the arterial of 2mm and the duct of Arantius of 3mm.
Fig. 7,8,9 provides the concrete structure embodiment of three kinds of antennas again, and among Fig. 7, antenna 7 is formed by a metal connecting ring 12 with along the tinsel that circumference is fixed on the connecting ring 12, and connecting ring 12 is enclosed within on the heart yearn 5, and tinsel is electrically connected with heart yearn 5 by connecting ring 12.Connecting ring 12 can keep the electric connection state by modes such as welding, crimping with heart yearn 5, and tinsel and connecting ring 12 can weld together.The structure of Fig. 8 is some blind holes of radially brill along connecting ring 12, inserts welding again after this blind hole as tinsel one end of antenna oscillator, makes tinsel more solid and reliable with being connected of connecting ring 12.
Connecting ring 12 shown in Figure 9 and the tinsel that is attached thereto are made by the whole punching press of sheet metal.Along double dot dash line the tinsel that punching out goes out is constituted antenna 7 to same direction bending 90 degree, it is enclosed within on the heart yearn 5, with the centre bore and heart yearn 5 welding of antenna.
Claims (7)
1, a kind of huge energy of multiple warhead irradiator that is used for microwave operation, by shielded-plate tube (1), be positioned at the rigid coaxial cable (2) of shielded-plate tube (1), be positioned at the temperature sensor (4) between shielded-plate tube (1) and the rigid coaxial cable (2), be enclosed within the earthenware (8) on the heart yearn (5) that peels off the coaxial cable (2) behind the high-frequency dielectric (3), antenna (7) that is electrically connected with coaxial cable core wire (5) and the antiseized cover (10) that covers on antenna (7) outside are formed, it is characterized in that, antenna (7) is one group of circumferential arrangement along earthenware (8), the metal raw silk rings parallel with heart yearn (5), its end inwardly keeps being electrically connected with heart yearn (5).
2, the huge energy of multiple warhead according to claim 1 irradiator is characterized in that said antenna (7) is made up of 1～20 pair of metal raw silk rings that is parallel to each other, and the length of antenna (7) is 1～50mm.
3, multiple warhead according to claim 1 and 2 is huge can irradiator, it is characterized in that, said antenna (7) is that the tinsel of 0.1～2mm is made by diameter.
4, the huge energy of multiple warhead according to claim 3 irradiator is characterized in that having in the front of said antenna (7) to be wrapped in helical antenna (9) on the earthenware (8), that be electrically connected with heart yearn (5), and the number of turns of helical antenna is 1～200 circle.
5, the huge energy of multiple warhead according to claim 3 irradiator, it is characterized in that, the cross section of earthenware (8) is oblateness or rectangle, antenna (7) is arranged around the outer rim of earthenware, the cross section of the cross section of antiseized cover (10) and earthenware (8) adapts, its external end head is edge of a knife shape, and its cross section, inner end is circular, is enclosed within on the rigid coaxial cable (2).
6, the huge energy of multiple warhead according to claim 3 irradiator, it is characterized in that, said antenna (7) is formed by a metal connecting ring (12) with along the tinsel that circumference is fixed on the connecting ring (12), connecting ring (12) is enclosed within on the heart yearn (5), and tinsel is electrically connected with heart yearn (5) by connecting ring (12).
7, the huge energy of multiple warhead according to claim 6 irradiator is characterized in that, said connecting ring (12) and the tinsel that is attached thereto are made by the whole punching press of sheet metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001098179A CN1163194C (en) | 2000-07-06 | 2000-07-06 | Temperature controlled microwave radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001098179A CN1163194C (en) | 2000-07-06 | 2000-07-06 | Temperature controlled microwave radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1331955A true CN1331955A (en) | 2002-01-23 |
| CN1163194C CN1163194C (en) | 2004-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001098179A Expired - Fee Related CN1163194C (en) | 2000-07-06 | 2000-07-06 | Temperature controlled microwave radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163194C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027167A (en) * | 2014-07-02 | 2014-09-10 | 上海旭旦实业有限公司 | Electromagnetic radiation protector and electrotome with electromagnetic radiation protection function |
-
2000
- 2000-07-06 CN CNB001098179A patent/CN1163194C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027167A (en) * | 2014-07-02 | 2014-09-10 | 上海旭旦实业有限公司 | Electromagnetic radiation protector and electrotome with electromagnetic radiation protection function |
| CN105193500A (en) * | 2014-07-02 | 2015-12-30 | 上海旭旦实业有限公司 | Electrotome with electromagnetic radiation protection function |
| CN104027167B (en) * | 2014-07-02 | 2016-03-09 | 上海旭旦实业有限公司 | Electromagnetic radiation protector and there is the electric knife of electromagnetic radiation protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1163194C (en) | 2004-08-25 |
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Owner name: HU WENGUO Free format text: FORMER OWNER: LIU ZHIMIN Effective date: 20050930 |
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Effective date of registration: 20050930 Address after: 100029, No. 1, gate 1, building 33, 503 Xin Hui West Street, Anding Road, Beijing Patentee after: Hu Wenguo Address before: 100029, No. 1, gate 1, building 33, 503 Xin Hui West Street, Anding Road, Beijing Patentee before: Liu Zhimin |
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Owner name: WANG JIANXIN Free format text: FORMER OWNER: HU WENGUO Effective date: 20120522 |
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Free format text: CORRECT: INVENTOR; FROM: HU WENGUO TO: HU WENGUO WANG JIANXIN Free format text: CORRECT: ADDRESS; FROM: 100029 CHAOYANG, BEIJING TO: 100102 CHAOYANG, BEIJING |
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Effective date of registration: 20120522 Address after: 100102 Beijing City, Chaoyang District Wangjing Guangshun North Street Hospital No. 33 Building No. 603 room 2007 Patentee after: Wang Jianxin Address before: 100029, No. 1, gate 1, building 33, 503 Xin Hui West Street, Anding Road, Beijing Patentee before: Hu Wenguo |
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Granted publication date: 20040825 Termination date: 20130706 |