CN207474660U - Implantable medical device and system - Google Patents
Implantable medical device and system Download PDFInfo
- Publication number
- CN207474660U CN207474660U CN201721516361.7U CN201721516361U CN207474660U CN 207474660 U CN207474660 U CN 207474660U CN 201721516361 U CN201721516361 U CN 201721516361U CN 207474660 U CN207474660 U CN 207474660U
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- frequency range
- medical device
- implantable medical
- distributing point
- free end
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- PEZNEXFPRSOYPL-UHFFFAOYSA-N (bis(trifluoroacetoxy)iodo)benzene Chemical compound FC(F)(F)C(=O)OI(OC(=O)C(F)(F)F)C1=CC=CC=C1 PEZNEXFPRSOYPL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 230000000638 stimulation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000001537 neural effect Effects 0.000 description 4
- 210000004556 brain Anatomy 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 230000005404 monopole Effects 0.000 description 3
- 210000005036 nerve Anatomy 0.000 description 3
- 238000005424 photoluminescence Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 210000003792 cranial nerve Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000005549 size reduction Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007383 nerve stimulation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000001186 vagus nerve Anatomy 0.000 description 1
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- Electrotherapy Devices (AREA)
Abstract
The utility model discloses a kind of implantable medical device and system, including radio antenna, radio antenna is the PIFA antennas that can be selectively operable in the first frequency range and/or the second frequency range, it includes radiating element, distributing point and short dot, radiating element includes the first current path length and the second current path length, wherein, first current path length corresponds to a quarter of first frequency range human body medium's wavelength, and the second current path length corresponds to a quarter of second frequency range human body medium's wavelength.
Description
Technical field
The utility model belongs to implantable medical device technical field, and in particular to a kind of plant with wireless dual-band antenna
Enter formula medical system.
Background technology
Implanted medical system generally includes implantable neural electrical stimulator(Including lesions located in deep brain DBS, implanted
Cortex stimulates CNS, implanted spinal cord stimulation trial SCS, implanted Sacral nerve electrical stimulation SNS, implanted vagus nerve electro photoluminescence
VNS etc.), implantable cardiac electric stimulation(It is commonly called as pacemaker), implanted drug infusion system(IDDS)Deng.
By taking implantable neural electrical stimulator as an example, the main impulse generator for including implanting(That is implantable nerve
Stimulator), electrode and external controller.Wherein, impulse generator is connected by extension wire with electrode, thus by arteries and veins
It rushes pulse caused by generator and is transferred to electrode, the pulse signal that impulse generator generates is transmitted to specific neural target by electrode
Point carries out electro photoluminescence, so as to make human body functional recovery to the state of normal operation.External controller includes doctor's program controller, patient
Controller.
External controller pattern can communicate with impulse generator by radio communication.Radio antenna is set to arteries and veins
It rushes in generator body.After impulse generator implantation, surrounded by biological tissue or tissue fluid, these surrounds compare extrapersonal space
With relatively high dielectric constant, wireless signal is caused to be lost so that being implanted into the wireless signal transmission efficiency of equipment reduces.
In general, the length of antenna, can be 1/4 in be implanted into Biomedia such as the antenna length of monopole antenna
The odd-multiple of wavelength, and be implanted into equipment volume need it is small as best one can, the space layout in housing is caused to challenge.
Moreover, in the characteristic impedance of existing antenna and impulse generator pcb board RF front-end circuit mismatch, need to configure
Radio-frequency front-end match circuit, the match circuit can adjust the input impedance of antenna, to provide in the specific of particular frequency range
Input impedance in the range of input impedance.Match circuit is inevitably present loss, causes the radiation efficiency of antenna and reduces.
On the other hand, MICS(Medical Implant Communications series)Refer to frequency range 402MHz-
405MHz is the communications band that implantable medical devices are general in the world for the communication in animal and human body, the letter of the frequency range
Propagation attenuation degree is small number in vivo.Corresponding thereto, ISM (industrial, scientific and
Medical) frequency range belongs to free frequency range, available for wireless telecommunications such as bluetooths in 2.4-2.48GHz.Existing implantable medical is set
In standby, radio antenna is only applicable to MICS frequency ranges.
Utility model content
The purpose of this utility model is that the radio antenna size for solving implantable medical device is big, radiation efficiency is low
The problem of.
To realize above-mentioned purpose of utility model, the utility model provides a kind of implantable medical device, including housing, setting
Pcb board in housing, the connecting portion being connect with housing, connecting portion include radio antenna and filler, wirelessly communicate day
Line is the PIFA antennas that can be selectively operable in the first frequency range and/or the second frequency range, including:
Short dot is electrically connected with the housing,
Distributing point is electrically connected with the pcb board, and the distributing point connects short dot by short-circuit minor matters,
Radiating element is connected with the distributing point, and including the first free end and the second free end, the distributing point arrives
The current path length of first free end is the first distance, and the current path length of the distributing point to the second free end is second
Distance,
Wherein, the first distance corresponds to a quarter of first frequency range human body medium's wavelength, and second distance corresponds to second
The a quarter of frequency range human body medium's wavelength.
As being further improved for one embodiment of the utility model, the first frequency range is MICS frequency ranges.
As being further improved for one embodiment of the utility model, the second frequency range is ISM band.
As being further improved for one embodiment of the utility model, the first distance is 5-7 times of second distance.
As being further improved for one embodiment of the utility model, feed through connector is configured to connect with distributing point in pcb board
It connects.
As being further improved for one embodiment of the utility model, by feeding gold between distributing point and feed through connector
Belong to silk to be connected, the feed metal silk is platinum wire, one or more in copper wire, filamentary silver.
As being further improved for one embodiment of the utility model, short-circuit minor matters be integrally formed with radiating element or
Person's short circuit minor matters are independent wire
To achieve the above object, one embodiment of the utility model provides a kind of Implanted medical system, including being set to
External control module, the power supply being connect with control module and any of the above-described implantable medical device, control module is with planting
Entering formula Medical Devices, antenna is associated by radio communication.
To achieve the above object, one embodiment of the utility model provides a kind of implantable medical device, including channel radio
Believe antenna, radio antenna is the PIFA antennas that can be selectively operable in the first frequency range and/or the second frequency range, including
Radiating element, distributing point and short dot, radiating element include the first free end and the second free end, distributing point to the first free end
Current path length for the first distance, the current path length of distributing point to the second free end is second distance, wherein, first
Distance corresponds to a quarter of first frequency range human body medium's wavelength, and second distance corresponds to second frequency range human body medium's wavelength
A quarter.
Compared with prior art, the PIFA antennas of the utility model, equivalent aerial size are twice of monopole antenna, energy
Than existing monopole antenna size reduction half, the volume of internal impulse generator can be reduced;It is without match circuit, drop simultaneously
Low-loss improves radiation efficiency;Also, it may operate in two-band, be implantable medical device and other electronic equipments
Wireless connection provide extension mouth.
Description of the drawings
Fig. 1 is that the utility model implanted brain deep nerve electric stimulation implants the positioning schematic diagram of part;
Fig. 2 is the structure diagram of one embodiment of the utility model Implanted medical system;
Fig. 3 is the structure diagram of one embodiment of the utility model implantable medical device;
Fig. 4 is the clawback damage curve figure of one embodiment of implantable medical device of the present invention;
Fig. 5 is antenna pattern of one embodiment of the utility model implantable medical device in ISM band horizontal direction;
Fig. 6 is antenna pattern of one embodiment of the utility model implantable medical device in ISM band vertical direction;
Fig. 7 is radiation direction of one embodiment of the utility model implantable medical device in MICS frequency range horizontal directions
Figure;
Fig. 8 is radiation direction of one embodiment of the utility model implantable medical device in MICS frequency range vertical direction
Figure.
Specific embodiment
The utility model is described in detail below with reference to specific embodiment shown in the drawings.But these embodiment party
Formula is not intended to limit the utility model, structure that those of ordinary skill in the art are made according to these embodiments, method or
Transformation functionally is all contained in the scope of protection of the utility model.
In the embodiment of the utility model, the plant by taking implanted cranial nerve electric stimulation as an example to the utility model
Enter formula Medical Devices and system does specific explaination, but it should explanation, the involved skill in embodiment disclosed below
Spirit can be alternatively used on the implantable medical device and system of other forms, exemplarily, such as the implanted heart
Dirty electric stimulation.
Fig. 1 schematically shows the part that implanted cranial nerve stimulation system implants, and is sent out including signal
Raw device 10, electrode 20, further include external control module.In this example, signal generator sends pulse, to carry out electricity to human body
Stimulation.Signal generator 10 is connected by extension wire 30 with electrode 20, thus by pulse caused by signal generator 10
Signal transmission is to electrode 20, and signal is transmitted to neuronal target in specific brain regions by output electrode contact and carries out electro photoluminescence, so as to make one
Physical efficiency recovery is to the state of normal operation.
Join Fig. 2, Implanted medical system is connect including external control module with power supply.It is program-controlled that control module includes doctor
Instrument and patient controller.Wherein, patient controller is to be used for for what patient was equipped with according to the situation of oneself control switch or tune
The device of the output parameter of internal impulse generator is saved, patient controller usually only can be in the adjusting set by doctor's program control instrument
In the range of voluntarily adjust.Doctor's program control instrument is the output ginseng that doctor is used for adjusting internal impulse generator according to patient's condition monitoring
Several devices, usual doctor's program control instrument can be used to control multiple impulse generators.Patient controller and doctor's program control instrument can
Pattern communicates with impulse generator by radio communication.
Join Fig. 3, signal generator 10 includes housing 40.Setting battery and at least one pcb board in housing 40(It is not shown).
Connecting portion is connect with housing 40, setting shell on the outside of connecting portion(It is not shown)To be sealed against.Connecting portion is used to hold
Receive radio antenna, multiple connection components 60 and sealing filler, radio antenna and connection component 60 respectively with pcb board
It is electrically connected.Connecting portion can protect the component in it from exposure in tissue or body fluid.
Radio antenna is planar inverted-F antenna(plannar inverted-F antenna, PIFA), including a spoke
Penetrate unit 51, a distributing point 53, a short-circuit minor matters 55, a short dot 54.
Radiating element 51, which wriggles, to be arranged, to adapt to narrow compact arrangement space in connecting portion.Illustratively, radiating element
51 are arranged like clip shape, and mechanical stamping has height into two stage portions 51a, 51b between stage portion 51a and 51b
Difference.In the utility model, the shape of radiating element 51 is not using this example as limitation, in response to the difference of connecting portion inside setting, spoke
Adaptive change can be made by penetrating the shape of unit 51.
There are two extending ends 511,512 for the tool of radiating element 51.Wherein, electric current of the extending end 511 apart from distributing point 53
Path length is L1, current path length of the extending end 512 apart from distributing point 53 is L2, L1More than L2.In this way, radiating element
51 there are the current path of two different lengths, shorter current path L when being excited2Make antenna that there is relatively low resonance frequency
Rate, longer current path L1Make antenna that there is higher resonant frequency.The feed that antenna can be transmitted according to distributing point 53
It operates in signal-selectivity one of them frequency or operates in two frequencies simultaneously.
Preferably, current path L1Length be MICS frequency ranges(About 402-405MHz)The four of human body medium's wavelength/
One, current path L2Length be ISM(2.4GHz)The a quarter of human body medium's wavelength, i.e. L1Length is about L2The 5-7 of length
Times.In this way, implantable medical device is operable with MICS frequency ranges and/or ISM band.
Radiating element 51 is coupled to ground plane by short-circuit minor matters 55, and short dot 54, short dot 54 are formed in ground plane
In on housing 40.Short-circuit minor matters 55 can be an one metal wire, such as platinum wire, one end be welded to short dot, the other end and spoke
It penetrates unit 51 to be weldingly connected, i.e., radio frequency is grounded;It can also be formed with 51 one of radiating element through mechanical stamping.
Distributing point 53 can be shown disposed between radiating element 51 and short dot 55, can also be located at radiating element 51
With the side of short dot 55(It is not shown).Distributing point 53 couples with radiating element 51 and passes through feed through connector phase with electronic device
Even, the signal of electronic device is sent out by radiating element 51, while the outer signals that radiating element 51 is received
Electronic device is passed back by distributing point 53.Electronic device is, for example, the pcb board being located in housing 40, and feed through connector is located at PCB
Plate.Feed metal silk is set between distributing point 53 and feed through connector, and feed metal silk one end is connected with distributing point, and the other end leads to
Cross feed through connector connecting PCB board.Illustratively, feed metal silk uses platinum wire, and RF signal is guided to from pcb board
On distributing point 53, and the external signal that radiating element 51 receives is led back from distributing point 53 on pcb board.Feed metal silk can also
For one or more of platinum wire, copper wire, filamentary silver.
Sealing material is epoxy resin.Epoxy resin not only has biocompatibility, and with high-k, low electromagnetism
The characteristics of loss.Sealing material surrounds radio antenna, to realize the miniaturization of antenna and high efficiency.
The characteristic impedance of PIFA antennas can realize very good impedance matching with the RF front-end circuit of pcb board, can save
Radio-frequency front-end match circuit of the prior art, eliminates the loss of this partial circuit, avoids the mismatch loss of unipole antenna.
The utility model earth point more than unipole antenna, a radiation minor matters, equivalent more than single-band antenna
Antenna size is twice of unipole antenna, can be doubled than existing unipole antenna size reduction half, radiation efficiency.
Join Fig. 4, the beamwidth of antenna covering 387-420MHz band limits of the utility model, frequency point impedance match situation is about
4.05MHz reaches best, and clawback loss S11 about -25.5DB, the design for meeting MICS frequency ranges requires;The day of the utility model
Line covers 2.4-2.555GHz band limits simultaneously, and frequency point impedance match situation reaches best in about 2.47GH, clawback loss S11
About -38DB meets the design requirement of ISM band.The antenna volume is small, can be applied to convenient for integrated and processing, inexpensive
In the communication equipment terminal of MICS frequency ranges and ISM band.
Join Fig. 5, the antenna structure of one embodiment of the utility model implantable medical device is in ISM band horizontal direction
Antenna pattern, antenna are spent in the horizontal direction -60 of 2.4GH frequency ranges, 0 degree and 60 degree of radiation direction gains respectively -
30.1663DB, -27.2548DB and -28.2538DB, therefore antenna is in this -60 degree to 60 degree of this horizontal direction angular ranges
Interior radiance is preferable so that antenna performance can be more easily by handling capacity certification.
Join Fig. 6, one embodiment antenna structure of the utility model implantable medical device is in the spoke of ISM band vertical direction
Penetrate directional diagram, antenna is spent in the vertical direction -60 of 2,4GH frequency ranges, 0 degree and 60 degree of radiation direction gains respectively -
26.8750DB, -27.2549DB and -28.2736DB, therefore antenna is in this -60 degree to 60 degree of this vertical direction angular ranges
Interior radiance is preferable so that antenna performance can be more easily by handling capacity certification.
Join Fig. 7, one embodiment antenna structure of the utility model implantable medical device is in MICS frequency range horizontal directions
Antenna pattern;Antenna is spent in the horizontal direction -60 of 403MHz frequency ranges, 0 degree and 60 degree of directive gains respectively -
31.7899DB, -28.2849DB and -29.2113DB, therefore antenna is in this -60 degree to 60 degree of this horizontal direction angular ranges
Interior radiance is preferable so that antenna performance can be more easily by handling capacity certification.
Join Fig. 8, one embodiment antenna structure of the utility model implantable medical device is in MICS frequency range vertical direction
Antenna pattern.Antenna is spent in the vertical direction -60 of 403MHz frequency ranges, 0 degree and 60 degree of radiation direction gain respectively -
27.2823DB, -28.2849DB and -28.7130DB, therefore antenna is in this -60 degree to 60 degree of this vertical direction angular ranges
Interior radiance is preferable so that antenna performance can be more easily by handling capacity certification.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
For bright book as an entirety, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
The a series of tool that the feasibility embodiment only for the utility model is described in detail of those listed above
Body illustrates, they are all to be made without departing from the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of implantable medical device, including housing, the pcb board being arranged in housing, the connecting portion being connect with the housing,
The connecting portion includes radio antenna and filler, it is characterised in that:
The radio antenna is the PIFA antennas that can be selectively operable in the first frequency range and/or the second frequency range, packet
It includes
Short dot is electrically connected with the housing,
Distributing point is electrically connected with the pcb board, and the distributing point connects short dot by short-circuit minor matters,
Radiating element is connected with the distributing point, including the first free end and the second free end, the distributing point to first
The current path length of free end is the first distance, the current path length of the distributing point to the second free end for second away from
From,
Wherein, the first distance corresponds to a quarter of first frequency range human body medium's wavelength, and second distance corresponds to the second frequency range
The a quarter of human body medium's wavelength.
2. implantable medical device according to claim 1, which is characterized in that the first frequency range is MICS frequency ranges.
3. implantable medical device according to claim 1, which is characterized in that the second frequency range is ISM band.
4. implantable medical device according to claim 1, which is characterized in that the first distance is 5-7 times of second distance.
5. implantable medical device according to claim 1, which is characterized in that pcb board be configured feed through connector with feedback
Electricity point connection.
6. implantable medical device according to claim 5, which is characterized in that pass through between distributing point and feed through connector
Feed metal silk is connected, and the feed metal silk is platinum wire, one or more in copper wire, filamentary silver.
7. implantable medical device according to claim 1, which is characterized in that short-circuit minor matters are integrated into radiating element
Type or short-circuit minor matters are independent wire.
8. a kind of implantable medical device, which is characterized in that including radio antenna, the radio antenna is can select
The PIFA antennas of the first frequency range and/or the second frequency range are operated in selecting property, including radiating element, distributing point and short dot,
The radiating element includes the first free end and the second free end, and the current path of the distributing point to the first free end is long
It spends for the first distance, the current path length of the distributing point to the second free end is second distance,
Wherein, the first distance corresponds to a quarter of first frequency range human body medium's wavelength, and second distance corresponds to the second frequency range
The a quarter of human body medium's wavelength.
9. a kind of Implanted medical system, including being set to external control module, the power supply that is connect with the control module,
It is characterized in that, further includes the implantable medical device described in one in claim 1 to 8, the control module and the plant
Enter formula Medical Devices to be associated by the radio antenna.
Applications Claiming Priority (2)
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CN2017214370037 | 2017-10-27 | ||
CN201721437003 | 2017-10-27 |
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CN207474660U true CN207474660U (en) | 2018-06-08 |
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ID=62260484
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107749513A (en) * | 2017-10-27 | 2018-03-02 | 苏州景昱医疗器械有限公司 | Implantable medical device and system |
WO2019080945A1 (en) * | 2017-10-27 | 2019-05-02 | 苏州景昱医疗器械有限公司 | Antenna, implantable medical device and implantable medical system |
CN111371062A (en) * | 2020-03-10 | 2020-07-03 | 摩科斯新材料科技(苏州)有限公司 | Implantable ceramic feedthrough connector and method of making same |
-
2017
- 2017-11-14 CN CN201721516361.7U patent/CN207474660U/en active Active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107749513A (en) * | 2017-10-27 | 2018-03-02 | 苏州景昱医疗器械有限公司 | Implantable medical device and system |
WO2019080945A1 (en) * | 2017-10-27 | 2019-05-02 | 苏州景昱医疗器械有限公司 | Antenna, implantable medical device and implantable medical system |
GB2587252A (en) * | 2017-10-27 | 2021-03-24 | Suzhou Sceneray Co Ltd | Antenna, implantable medical device and implantable medical system |
GB2587252B (en) * | 2017-10-27 | 2022-10-19 | Suzhou Sceneray Co Ltd | Antenna, implantable medical device, and implantable medical system |
CN111371062A (en) * | 2020-03-10 | 2020-07-03 | 摩科斯新材料科技(苏州)有限公司 | Implantable ceramic feedthrough connector and method of making same |
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Address after: Building C16, biological nano Park, 218 Xinghu street, Suzhou Industrial Park, Jiangsu Province Patentee after: Jingyu Medical Technology (Suzhou) Co.,Ltd. Address before: 215123 C16, biological nano Park, 218 Xinghu street, Suzhou Industrial Park, Jiangsu Province Patentee before: SCENERAY Co.,Ltd. |