CN111293391A - Direct-current high-voltage breaker of microwave therapeutic apparatus - Google Patents
Direct-current high-voltage breaker of microwave therapeutic apparatus Download PDFInfo
- Publication number
- CN111293391A CN111293391A CN202010217516.7A CN202010217516A CN111293391A CN 111293391 A CN111293391 A CN 111293391A CN 202010217516 A CN202010217516 A CN 202010217516A CN 111293391 A CN111293391 A CN 111293391A
- Authority
- CN
- China
- Prior art keywords
- coupling
- ring
- resonant cavity
- isolation
- antenna socket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 67
- 238000010168 coupling process Methods 0.000 claims abstract description 67
- 238000005859 coupling reaction Methods 0.000 claims abstract description 67
- 238000002955 isolation Methods 0.000 claims abstract description 46
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 230000005684 electric field Effects 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000004677 Nylon Substances 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 229920001778 nylon Polymers 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims description 6
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 230000010287 polarization Effects 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000000523 sample Substances 0.000 abstract description 3
- 206010014357 Electric shock Diseases 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/36—Isolators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/02—Radiation therapy using microwaves
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
The invention relates to a breaker, in particular to a direct-current high-voltage breaker of a microwave therapeutic apparatus, and belongs to the technical field of microwave isolators. According to the technical scheme provided by the invention, the direct-current high-voltage breaker of the microwave therapeutic apparatus comprises a first isolation resonant cavity, a second isolation resonant cavity, a first antenna socket, a second antenna socket and an insulation isolation ring. The first and second isolation resonant cavities are coaxial and symmetrical cylindrical microwave cavities with coupling holes, the cylindrical cavities are made of metal aluminum, the radius is R, and the length is L; the first antenna socket and the second antenna socket are N-shaped four-hole flange female seats, the diameter of a conductor coupling column in the antenna socket is larger than 3mm, and the length of the conductor coupling column arranged in a resonant cavity is smaller than 20 mm; the insulating isolation ring is made of cylindrical nylon materials, the thickness of the insulating ring in the middle is less than 2mm, and an incident electric field obtains a voltage zero point at the insulating isolation ring; the invention can realize BF type design, realize isolation of direct current and high voltage, prevent electric shock when the treatment probe contacts the human body, and simultaneously can effectively output microwave energy to achieve effective treatment effect.
Description
Technical Field
The invention relates to the technical field of microwave isolators, in particular to a direct-current high-voltage breaker of a microwave therapeutic apparatus.
Background
The microwave therapeutic apparatus mainly consumes microwave energy to generate heat effect, and the heat effect can be used for treating various diseases. The microwave is emitted from the microwave therapeutic equipment, is output to the therapeutic probe through the microwave cable, and is involved in the focus of local tissues of the patient for treatment. Depending on the classification of medical electrical appliances for protection against electric shocks, the microwave treatment unit must be used in BF type devices, i.e. devices which are suitable for use on the body surface and in body cavities, but which have an insulating contact with the patient. Most of existing microwave therapeutic apparatuses are mainly designed by BF type isolation through a circuit part, but the core microwave output component of the apparatus has high power and high voltage, and the design mode is complex, so that the effective isolation of direct current high voltage is difficult to achieve, and the safety risk of electric leakage to an application part is easy to occur.
Disclosure of Invention
The direct-current high-voltage isolator is small in design size, light in weight, easy to process, capable of achieving BF type design, isolating direct current and high voltage, preventing electric shock when a treatment probe is in contact with a human body, and meanwhile capable of effectively outputting microwave energy to achieve effective treatment effect.
In order to achieve the purpose, the invention provides a direct-current high-voltage breaker of a microwave therapeutic apparatus, which comprises a first isolation resonant cavity, a second isolation resonant cavity, a first antenna socket, a second antenna socket and an insulation isolation ring, wherein the first isolation resonant cavity is connected with the second isolation resonant cavity;
the first and second isolation resonant cavities are coaxial and symmetrical cylindrical microwave cavities with coupling holes, the cylindrical cavities are made of metal aluminum, the radius is R, and the length is L;
further, the resonant frequency of the cylindrical resonant cavity is expressed as:
in the formula: 2R and L are respectively the diameter and the length of the resonant cavity; epsilon and mu are respectively dielectric constant and magnetic permeability of the medium;
furthermore, a coupling hole is formed at the joint of the first and second isolation resonant cavities and the antenna socket, a step is arranged in the coupling hole, a hole in the upper part of the step is larger and used for fixing the antenna socket, a hole in the lower part of the step is smaller and used for passing through a coupling column on the antenna socket, and meanwhile, the influence of the coupling hole on coupling can be reduced;
further, the ideal coupling equation between the coupling hole and the resonant cavity is as follows:
furthermore, the coupling hole is positioned at the center of the bottom of the cylinder, the polarization direction of the incident electric field is parallel to the coupling hole and the inner side of the cavity, and the field intensity value coupled into the cavity is the maximum;
further, the isolation resonant cavity and the coupling hole are metal, the tangential electric field component on the surface of the metal conductor is zero, and for an open space without the constraint of the wall of the cavity, the real boundary condition is that each component of the electromagnetic field at infinity is zero.
The first antenna socket and the second antenna socket are N-shaped four-hole flange female seats, the diameter of a conductor coupling column in the antenna socket is larger than 3mm, and the length of the conductor coupling column arranged in a resonant cavity is smaller than 20 mm;
furthermore, a coupling ring is arranged at the tail end of the cavity of the antenna socket inner conductor coupling column, and the radius of the coupling ring is larger than 6 mm;
furthermore, the coupling ring on the first and second antenna sockets is arranged at the strongest position of the magnetic field in the resonant cavity working mode, the ring surface is vertical to the magnetic line of force, the coupling ring becomes a magnetic dipole under the action of the magnetic field, and the resonant cavity is coupled with the coaxial line under the action of the magnetic moment of the coupling ring. The coupling ring is horizontally arranged outside the middle insulating isolation ring of the resonant cavity in a manner of being vertical to the magnetic force lines, namely the strongest position of the magnetic field in the working mode of the resonant cavity. According to the symmetry principle, the outer side of the middle of the resonant cavity insulating isolation ring is also the strongest part of the magnetic field distribution of the coupling ring.
The insulating isolation ring is made of cylindrical nylon materials, the thickness of the insulating ring in the middle is less than 2mm, and an incident electric field obtains a voltage zero point at the insulating isolation ring;
furthermore, internal threads are arranged on the inner side edges of the left end and the right end of the insulating isolation ring and are used for being matched with external threads arranged on the outer side edge of the first resonant cavity and the outer side edge of the second resonant cavity.
The technical principle of the invention is as follows: the first resonant cavity and the second resonant cavity are separated by an insulating ring with certain strength in the middle, direct current cannot be conducted between the first resonant cavity and the second resonant cavity, and the function of high dangerous voltage is separated; two axisymmetric circular coupling rings with the same area are used to form a circular ring large capacitor to play a role in high-frequency conduction.
Compared with the prior art, the direct-current high-voltage breaker of the microwave therapeutic apparatus provided by the invention has the following beneficial effects:
1. the cylindrical electric coupling coaxial resonant cavity can effectively reduce the volume of the system, signals can be directly input into the energy processing module without mode conversion, the resonant frequency range can be freely adjusted, the maximum frequency can reach 9.6GHz, and efficient microwave power transmission can be carried out.
2. The insulating isolation ring with the nested design can bear the withstand voltage creepage distance of 5000V, solves the problem of insufficient withstand voltage of a common isolator, and ensures that an output application part cannot be electrified and safe isolation because an input cavity end is insulated from an output cavity end.
3. The antenna socket is symmetrically designed at two ends, both ends can be used as input and output ends, and meanwhile, the antenna socket is connected with the microwave cable, so that the length of the microwave cable is freely configured, and the antenna socket is relatively free and free in equipment structure placement.
4. The invention can isolate direct current between the input end and the output end, thereby protecting the output end from the risk of electric shock, and has simple design structure and high manufacturing and installation efficiency.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1, the direct current high voltage breaker of a microwave therapeutic apparatus includes a first isolation resonant cavity 2, a second isolation resonant cavity 6, a first antenna socket 1, a second antenna socket 5, and an insulation isolation ring 3.
The first and second isolation resonant cavities 2 and 6 are coaxial and symmetrical cylindrical microwave cavities with coupling holes, the cylindrical cavities are made of metal aluminum, the radius is R10, and the length is L9.
Coupling hole 11 is arranged at the joint of the first and second isolation resonant cavities and the antenna socket, a step 8 is arranged in the coupling hole, the hole in the upper part of the step 8 is large and used for fixing the antenna socket 1, the hole in the lower part of the step is small and used for passing through the coupling column 4 on the antenna socket, and meanwhile, the influence of the coupling hole on coupling can be reduced.
The coupling hole 11 is located at the center of the bottom of the cylinder, the polarization direction of the incident electric field is parallel to the coupling hole and the inner side of the cavity, and the field intensity value coupled into the cavity is the largest.
The isolation resonant cavity and the coupling hole are metal, the tangential electric field component on the surface of the metal conductor is zero, and for an open space without the constraint of the wall of the cavity, the real boundary condition is that each component of an electromagnetic field at infinity is zero;
the first and second antenna sockets 1 and 5 are N-shaped female seats with four-hole flange plates, the diameter of a conductor coupling column 4 in each antenna socket 1 or 5 is larger than 3mm, and the length of the conductor coupling column arranged in a resonant cavity is smaller than 20 mm.
The coupling ring 7 is arranged at the tail end of the cavity of the conductor coupling column 4 in the antenna socket 1 or 5, and the radius of the coupling ring is larger than 6 mm.
The coupling ring 7 on the first and second antenna sockets is arranged at the strongest position of the magnetic field in the working mode of the resonant cavity, the ring surface is vertical to the magnetic force line, the coupling ring becomes a magnetic dipole under the action of the magnetic field, and the resonant cavity is coupled with the coaxial line under the action of the magnetic moment of the coupling ring. The coupling ring 7 is horizontally arranged outside the middle insulating isolation ring 3 of the resonant cavity in a manner of being vertical to the magnetic force lines, namely the strongest position of the magnetic field in the working mode of the resonant cavity. According to the symmetry principle, the outer side of the middle of the resonant cavity insulating isolation ring 3 is also the strongest position of the magnetic field distribution of the coupling ring.
The insulating isolation ring 3 is made of cylindrical nylon materials, the thickness of the insulating ring in the middle is less than 2mm, and an incident electric field obtains a voltage zero point at the insulating isolation ring;
and internal threads are arranged on the inner side edges of the left end and the right end of the insulating isolation ring 3 and are used for being matched with external threads arranged on the outer side edges of the first resonant cavity 2 and the second resonant cavity 6.
When the microwave high-voltage isolator works, the direct-current high-voltage isolator is arranged between the output end of a microwave source and the application part of microwave therapeutic equipment, the first resonant cavity 2 and the second resonant cavity 6 are separated by the insulating isolating ring 3, direct current cannot be conducted between the first resonant cavity and the second resonant cavity, and the high-voltage isolator has the function of isolating high dangerous voltage; two axisymmetrical circular coupling rings 7 with the same area are respectively arranged on two sides of the insulating isolation ring 3 to form a circular large capacitor to play a role in high-frequency conduction;
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The protection scope of the patent of the invention is subject to the appended claims.
Claims (3)
1. A direct-current high-voltage breaker of a microwave therapeutic apparatus comprises a first isolation resonant cavity, a second isolation resonant cavity, a first antenna socket, a second antenna socket and an insulation isolation ring;
the first and second isolation resonant cavities are coaxial and symmetrical cylindrical microwave cavities with coupling holes, the cylindrical cavities are made of metal aluminum, the radius is R, and the length is L;
the resonant frequency expression of the cylindrical resonant cavity is as follows:
in the formula: 2R and L are respectively the diameter and the length of the resonant cavity; epsilon and mu are respectively dielectric constant and magnetic permeability of the medium;
a coupling hole is formed at the joint of the first and second isolation resonant cavities and the antenna socket, a step is arranged in the coupling hole, a hole in the upper part of the step is larger and used for fixing the antenna socket, and a hole in the lower part of the step is smaller and used for passing through a coupling column on the antenna socket, so that the influence of the coupling hole on coupling can be reduced;
the ideal coupling equation between the coupling hole and the resonant cavity is as follows:
the coupling hole is positioned at the center of the bottom of the cylinder, the polarization direction of an incident electric field is parallel to the coupling hole and the inner side of the cavity, and the field intensity value coupled into the cavity is the maximum;
the isolation resonant cavity and the coupling hole are made of metal, the tangential electric field component on the surface of the metal conductor is zero, and for an open space without the constraint of the wall of the cavity, the real boundary condition is that each component of an electromagnetic field at infinity is zero.
2. The breaker of claim 1, wherein the first and second antenna sockets are N-type four-hole flange female sockets, the diameter of the conductor coupling column in the antenna socket is >3mm, and the length of the conductor coupling column placed in the resonant cavity is <20 mm;
a coupling ring is arranged at the tail end of the cavity of the antenna socket inner conductor coupling column, and the radius of the coupling ring is more than 6 mm;
the coupling ring on the first and second antenna sockets is arranged at the strongest position of a magnetic field in a resonant cavity working mode, the ring surface is vertical to a magnetic line of force, the coupling ring becomes a magnetic dipole under the action of the magnetic field, and the resonant cavity is coupled with the coaxial line under the action of the magnetic moment of the coupling ring; the coupling ring is horizontally arranged outside the middle insulating isolation ring of the resonant cavity and is vertical to the magnetic force line, namely the strongest position of the magnetic field of the working mode of the resonant cavity; according to the symmetry principle, the outer side of the middle of the resonant cavity insulating isolation ring is also the strongest part of the magnetic field distribution of the coupling ring.
3. The breaker of claim 1, wherein the insulating isolation ring is made of cylindrical nylon, the thickness of the insulating ring in the middle is less than 2mm, and an incident electric field obtains a voltage zero point at the insulating isolation ring;
and internal threads are arranged on the inner side edges of the left end and the right end of the insulating isolating ring and are used for being matched with the external threads arranged on the first resonant cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010217516.7A CN111293391A (en) | 2020-03-25 | 2020-03-25 | Direct-current high-voltage breaker of microwave therapeutic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010217516.7A CN111293391A (en) | 2020-03-25 | 2020-03-25 | Direct-current high-voltage breaker of microwave therapeutic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111293391A true CN111293391A (en) | 2020-06-16 |
Family
ID=71024817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010217516.7A Pending CN111293391A (en) | 2020-03-25 | 2020-03-25 | Direct-current high-voltage breaker of microwave therapeutic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111293391A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760198A (en) * | 2020-07-24 | 2020-10-13 | 南京臻泰微波科技有限公司 | BF type isolator for microwave treatment equipment |
| CN111916878A (en) * | 2020-08-12 | 2020-11-10 | 电子科技大学 | Strong coupling device for coupling ring of microwave resonant cavity |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1389953A (en) * | 2001-06-01 | 2003-01-08 | 电子科技大学 | DC voltage-isolating waveguide |
| CN102158218A (en) * | 2010-11-16 | 2011-08-17 | 广东通宇通讯股份有限公司 | Coaxial integrated radio frequency signal isolator |
| CN202888376U (en) * | 2012-10-11 | 2013-04-17 | 苏州易特诺科技股份有限公司 | DC blocking device |
| CN204303961U (en) * | 2014-12-29 | 2015-04-29 | 零八一电子集团四川华昌电子有限公司 | Microwave block isolating device |
| US20170104255A1 (en) * | 2015-10-09 | 2017-04-13 | Ppc Broadband, Inc. | Mini isolator |
| CN107550560A (en) * | 2012-09-27 | 2018-01-09 | 克里奥医药有限公司 | For the isolation circuit for the electrosurgery unit for cutting off biological tissue |
| WO2019034708A1 (en) * | 2017-08-17 | 2019-02-21 | Creo Medical Limited | Isolation device for electrosurgical apparatus |
| CN211829155U (en) * | 2020-03-25 | 2020-10-30 | 南京亿高微波系统工程有限公司 | Direct-current high-voltage breaker of microwave therapeutic apparatus |
-
2020
- 2020-03-25 CN CN202010217516.7A patent/CN111293391A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1389953A (en) * | 2001-06-01 | 2003-01-08 | 电子科技大学 | DC voltage-isolating waveguide |
| CN102158218A (en) * | 2010-11-16 | 2011-08-17 | 广东通宇通讯股份有限公司 | Coaxial integrated radio frequency signal isolator |
| CN107550560A (en) * | 2012-09-27 | 2018-01-09 | 克里奥医药有限公司 | For the isolation circuit for the electrosurgery unit for cutting off biological tissue |
| CN202888376U (en) * | 2012-10-11 | 2013-04-17 | 苏州易特诺科技股份有限公司 | DC blocking device |
| CN204303961U (en) * | 2014-12-29 | 2015-04-29 | 零八一电子集团四川华昌电子有限公司 | Microwave block isolating device |
| US20170104255A1 (en) * | 2015-10-09 | 2017-04-13 | Ppc Broadband, Inc. | Mini isolator |
| WO2019034708A1 (en) * | 2017-08-17 | 2019-02-21 | Creo Medical Limited | Isolation device for electrosurgical apparatus |
| CN211829155U (en) * | 2020-03-25 | 2020-10-30 | 南京亿高微波系统工程有限公司 | Direct-current high-voltage breaker of microwave therapeutic apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760198A (en) * | 2020-07-24 | 2020-10-13 | 南京臻泰微波科技有限公司 | BF type isolator for microwave treatment equipment |
| CN111916878A (en) * | 2020-08-12 | 2020-11-10 | 电子科技大学 | Strong coupling device for coupling ring of microwave resonant cavity |
| CN111916878B (en) * | 2020-08-12 | 2024-02-20 | 电子科技大学 | Strong coupling device for coupling ring of microwave resonant cavity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111293391A (en) | Direct-current high-voltage breaker of microwave therapeutic apparatus | |
| CN211829155U (en) | Direct-current high-voltage breaker of microwave therapeutic apparatus | |
| CN104158430A (en) | Ultra-compact high-voltage nanosecond pulse source | |
| EP3231044A1 (en) | Capacitively coupled connector junctions having parallel signal paths and related connectors and methods | |
| WO2020147853A1 (en) | Wireless energy transmission device with noise reduction design | |
| CN203931947U (en) | High-power RF coaxial relay switch | |
| CN206293593U (en) | A kind of 250W power 18GHz fixed attenuators | |
| CN214411467U (en) | Direct current and alternating current breaker and microwave active circuit | |
| CN104008921B (en) | High-power RF coaxial relay switch | |
| KR20100084901A (en) | A spark gap switch module for high power ultra-wideband electromagnetic field radiation | |
| AU2016337508B2 (en) | Low eletromagnetic field electrosurgical cable | |
| RU2010110934A (en) | TISSUE PLASMA COAGULATION DEVICE (OPTIONS) | |
| CN104009396B (en) | Low residual voltage ultra broadband coaxial lightning arrester | |
| CN103022928A (en) | Contact double-shielding structure | |
| CN203871657U (en) | Low residual voltage ultra wide band coaxial lightning arrester | |
| Andreev et al. | High-power ultrawideband electromagnetic pulse source | |
| CN212113369U (en) | Magnetic ring isolation sleeve | |
| CN216389676U (en) | High-power DC blocking device | |
| CA3058026C (en) | A system for wireless power transfer between low and high electrical potential, and a high voltage circuit breaker | |
| CN112582767A (en) | Direct current and alternating current breaker and microwave active circuit | |
| CN217115594U (en) | Coaxial vacuum wall penetrating piece of high pressure radio frequency | |
| CN208189749U (en) | A kind of microwave coaxial connector | |
| EP4369871A2 (en) | An anti-tip electrode type single electrode structure and electrode cleaning device | |
| CN114646782A (en) | High-frequency high-power test platform | |
| CN219630451U (en) | Magnetron with dual patient protection isolation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No. 19 Xinghui Road, Jiangbei New District, Nanjing City, Jiangsu Province, 211899 Applicant after: Nanjing Yigao Medical Technology Co.,Ltd. Address before: 3 / F and 4 / F, J5 science and Technology Industrial Park, Nanjing University of technology, No.15 Wanshou Road, economic development zone, Pukou District, Nanjing, Jiangsu Province, 211800 Applicant before: NANJING ECO MICROWAVE SYSTEM Co.,Ltd. Country or region before: China |