CN209059422U - Microwave melt needle - Google Patents
Microwave melt needle Download PDFInfo
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- CN209059422U CN209059422U CN201820248327.4U CN201820248327U CN209059422U CN 209059422 U CN209059422 U CN 209059422U CN 201820248327 U CN201820248327 U CN 201820248327U CN 209059422 U CN209059422 U CN 209059422U
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- coaxial cable
- circumferential recess
- main body
- outer tube
- needle
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Abstract
The utility model discloses a kind of microwave melt needles comprising main body outer tube, syringe needle and coaxial cable；Syringe needle is inserted into the first end of main body outer tube and is fixedly connected with main body outer tube；Coaxial cable is inserted into main body outer tube and in the coaxial cable plug-in opening of the first end insertion needle of coaxial cable；Part in coaxial cable insertion needle is opened up there are two circumferential recess；It less than the distance between the first circumferential recess and the second circumferential recess is L2 that first circumferential recess, which is L1 at a distance from the first end end face of coaxial cable,；First circumferential recess is between the second circumferential recess and the first end end face of coaxial cable.Above-mentioned microwave melt needle can make microwave concentrate on the first end of coaxial cable, obtain the ablation areas of almost spherical, not only completely inactivate tumor tissues, but also avoid increasing ablation range, and protection human normal tissue escapes injury.
Description
Technical field
The utility model relates to the field of medical instrument technology, more specifically to a kind of microwave melt needle.
Background technique
Recently, the minimally invasive intervention Microwave Coagulation Therapy tumour of image guidance is widely used to clinic.Microwave melt needle is
In CT or ultrasound guidance by microwave melt needle percutaneous puncture to tissue lesion center region, by its front end sustained release
Microwave makes the molecule high speed rotary motion of surrounding generate temperature arrising caused by friction, to make tissue coagulation, dehydration necrosis, microwave ablation tumour
High-efficient, safety it is good, wound is small, few intercurrent disease.
But the ablation areas of existing microwave melt needle is strip elliptical shape, and tumor shape majority is class ball
Shape causes to need to increase ablation range when treatment, and ability can completely inactivates tumor tissues, damages to human normal tissue.
In addition, existing microwave melt needle is under magnetic resonance environment and incompatible, there are artifacts for image scanning, can not be in magnetic
It is used under resonance environment.
Furthermore the front end of existing microwave melt needle be a metal needle, the metal needle by with inside needle tubing
Coaxial cable welding, which is realized, to be fixed, and easy to fall off in the course of surgery, reliability, safety are low.
In conclusion how to provide not only enables microwave melt needle completely to inactivate tumor tissues, but also avoid increasing ablation model
It encloses, prevents from damaging human normal tissue, be those skilled in the art's urgent problem to be solved.
Utility model content
In view of this, the present invention provides a kind of microwave melt needle, the portion on coaxial cable in insertion needle is separated
If microwave energy can be made externally to radiate there are two circumferential recess, and the arrangement of two circumferential recess can make it is micro-
Wave concentrates on the first end of coaxial cable, obtains the ablation areas of almost spherical, not only completely inactivates tumor tissues, but also avoid increasing
Ablation range damages human normal tissue.
To achieve the above object, the utility model provides the following technical solutions:
A kind of microwave melt needle, comprising:
Main body outer tube；
Syringe needle, the syringe needle are inserted into the first end of the main body outer tube and are fixedly connected with the main body outer tube；
Coaxial cable, the coaxial cable is inserted into the main body outer tube and the first end of coaxial cable insertion institute
It states in the coaxial cable plug-in opening of syringe needle；
The part that the coaxial cable is inserted into the syringe needle is opened up there are two circumferential recess, wherein the first circumferential recess
With at a distance from the first end end face of the coaxial cable be L1, the distance between first circumferential recess and the second circumferential recess
It is less than L2 for L2, L1；First circumferential recess is located at the first end end face of second circumferential recess and the coaxial cable
Between.
Preferably, in above-mentioned microwave melt needle, the range of L1 is set as 1mm-10mm；The range of L2 is set as 1mm-
10mm。
Preferably, in above-mentioned microwave melt needle, the width range of the circumferential recess is 0.1mm-1mm.
Preferably, in above-mentioned microwave melt needle, the width of the width of first circumferential recess and second circumferential recess
It spends identical.
Preferably, in above-mentioned microwave melt needle, the main body outer tube is inserted into one end of the water inlet pipe of the microwave melt needle
The interior and close syringe needle；The water tank of the microwave melt needle is set with and is fixed on outside the second end of the main body outer tube；It is described
The outlet pipe of microwave melt needle is inserted into the water tank；The port of the water tank, the coaxial cable, the water inlet pipe and described
Outlet pipe is adhesively fixed and is sealed by glue.
Preferably, in above-mentioned microwave melt needle, the radio frequency (RF) coaxial connector of the microwave melt needle is welded in described coaxial
The second end of cable；The radio frequency (RF) coaxial connector is located at outside the main body outer tube.
It preferably, further include handle in above-mentioned microwave melt needle, the handle is fixedly connected with the main body outer tube, and
Wrap up the water tank；One end of the radio frequency (RF) coaxial connector is fixedly connected in the handle and with the handle.
Preferably, in above-mentioned microwave melt needle, the water inlet pipe and the outlet pipe are respectively titanium alloy hollow pipe；It is described
Radio frequency connector is the silver-plated radio frequency connector of aluminum.
Preferably, in above-mentioned microwave melt needle, the syringe needle includes the main paragraph being sequentially connected and inserting section, the inserting
Section is inserted and is fixed in the main body outer tube, and the outer diameter of the inserting section is less than the outer diameter of the main paragraph；The syringe needle
Coaxial cable plug-in opening is through the inserting section and extends to inside the free end of the main paragraph.
The utility model provides a kind of microwave melt needle comprising main body outer tube, syringe needle and coaxial cable；Syringe needle is inserted into
The first end of main body outer tube is simultaneously fixedly connected with main body outer tube；Coaxial cable be inserted into main body outer tube in and coaxial cable first
In the coaxial cable plug-in opening for holding insertion needle；Part in coaxial cable insertion needle is opened up there are two circumferential recess；Wherein,
First circumferential recess is L1 at a distance from the first end end face of coaxial cable, between the first circumferential recess and the second circumferential recess
Distance is L2, and L1 is less than L2；First circumferential recess is between the second circumferential recess and the first end end face of coaxial cable.
Circumferential recess can be such that microwave externally radiate in above-mentioned microwave melt needle, and the first circumferential recess with it is coaxial
The distance of the first end end face of cable can be such that microwave concentrates less than the distance between the first circumferential recess and the second circumferential recess
In the first end of coaxial cable, the ablation areas of almost spherical is obtained, not only completely inactivates tumor tissues, but also avoids increasing ablation model
It encloses, protection human normal tissue escapes injury.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of microwave melt needle provided by the embodiment of the utility model；
Fig. 2 is the cross-sectional view of A-A in Fig. 1；
Wherein, in Fig. 1-Fig. 2:
Syringe needle 1；Main body outer tube 2, coaxial cable 3；First circumferential recess 3-1；Second circumferential recess 3-2；In coaxial cable
Conductor 301；Coaxial cable insulated layer 302；Coaxial cable outer conductor 303；Water inlet pipe 4；Outlet pipe 5；Water tank 6；RF coaxial connects
Connect device 7；Handle 8.
Specific embodiment
The utility model embodiment discloses a kind of microwave melt needle, and the part on coaxial cable in insertion needle opens up
There are two circumferential recess, microwave energy can be made externally to radiate, and the arrangement of two circumferential recess can make microwave
The first end for concentrating on coaxial cable obtains the ablation areas of almost spherical, not only completely inactivates tumor tissues, but also avoids increasing and disappear
Melt range, human normal tissue is damaged.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-Fig. 2 is please referred to, the utility model embodiment provides a kind of microwave melt needle comprising main body outer tube 2, syringe needle
1 and coaxial cable 3；Syringe needle 1 is inserted into the first end of main body outer tube 2 and is fixedly connected with main body outer tube 2；Coaxial cable 3 is inserted into
In main body outer tube 2 and in the coaxial cable plug-in opening of the first end insertion needle 1 of coaxial cable 3；3 insertion needle of coaxial cable
Part in 1 is opened up there are two circumferential recess；Wherein, the first circumferential recess 31 is at a distance from the first end end face of coaxial cable 3
For L1, the distance between the first circumferential recess 31 and the second circumferential recess 32 are L2, and L1 is less than L2；First circumferential recess 31 is located at
Between second circumferential recess 32 and the first end end face of coaxial cable 3.
Circumferential recess can be such that microwave externally radiate in above-mentioned microwave melt needle, and the first circumferential recess 31 with it is same
The distance of the first end end face of shaft cable 3 can make less than the distance between the first circumferential recess 31 and the second circumferential recess 32
Microwave concentrates on the first end of coaxial cable 3, obtains the ablation areas of almost spherical, not only completely inactivates tumor tissues, but also avoid
Ablation range is increased, protection human normal tissue escapes injury.
Specifically, the range of above-mentioned L1 is set as 1mm-10mm；The range of L2 is set as 1mm-10mm.Certainly, L1 and L2
It may be configured as any number in above-mentioned numberical range, it is only necessary to ensure that L1 is less than L2.The width range of above-mentioned circumferential recess
It is set as 0.1mm-1mm；The width of first circumferential recess 31 and the second circumferential recess 32 it is of same size.Above-mentioned coaxial cable 3
Impedance be 50 ohm, outer diameter range be 1.9mm-2.2mm, length range 122mm-240mm.
In microwave melt needle provided in this embodiment, the width of circumferential recess and the size range at interval are arranged so that microwave
The front end of coaxial cable 3 can be maximumlly concentrated on, to obtain a closer spheroidal ablation areas, be conducive to realize
Tumor tissues are inactivated in small ablation range, protection normal tissue escapes injury.
Above-mentioned microwave melt needle is water-cooled microwave ablation needle.Outside one end insertion main body of the water inlet pipe 4 of the microwave melt needle
In pipe 2 and close to syringe needle 1, the specific fixed connection place close to syringe needle 1 and main body outer tube 2；The suit of water tank 6 of microwave melt needle is simultaneously
It is fixed on outside the second end of main body outer tube 2；The outlet pipe 5 of microwave melt needle is inserted into water tank 6；The port of water tank 6, coaxial cable
3, water inlet pipe 4 and outlet pipe 5 are adhesively fixed and are sealed by glue, and above-mentioned glue is UV (Ultraviolet Rays, ultraviolet light
Line) glue.
Specifically, the radio frequency (RF) coaxial connector 7 of above-mentioned microwave melt needle is welded in the second end of coaxial cable 3；Radio frequency is same
Mandrel connector 7 is located at outside main body outer tube 2.
Hand-held, above-mentioned microwave melt needle further include handle 8, handle 8 and main body outer tube 2 during surgery for the convenience of the user
It is fixedly connected, and wraps up water tank 6；One end of radio frequency (RF) coaxial connector 7 is fixedly connected in handle 8 and with handle 8.
In order to enable microwave melt needle as above to apply under magnetic resonance environment, above-mentioned water inlet pipe 4 and outlet pipe 5 are adopted respectively
With titanium alloy hollow pipe；Radio frequency connector is set as the silver-plated radio frequency connector of aluminum.
Specifically, in above-mentioned microwave melt needle, syringe needle 1 include the main paragraph for being sequentially connected, and being an integral structure and
Section is inserted, inserting section is inserted and is fixed in main body outer tube 2, and the outer diameter for inserting section is less than the outer diameter of main paragraph；Syringe needle 1 it is coaxial
Cable plug-in opening is through inserting section and extends to inside the free end of main paragraph.The free end of main paragraph is thereon far from inserting section
End.
Syringe needle 1 is set as zirconium oxide syringe needle, and wall thickness is set as 0.2mm-0.5mm, length 16mm-40mm, main paragraph
Outer diameter is 2.1mm-2.5mm, and inserting section outer diameter is 1.8mm-2.2mm, and the aperture of coaxial cable plug-in opening is 1.2mm-2.0mm,
The aperture of the coaxial cable plug-in opening is slightly larger than the outer diameter of coaxial cable 3, and the free end of syringe needle 1 is solid conical, convenient for wearing
Thorn.
Main body outer tube 2 is titanium alloy tube, and wall thickness 0.1mm-0.5mm, length 100mm-200mm, internal diameter is
1.9mm-2.3mm, outer diameter 2.1mm-2.5mm；The internal diameter of main body outer tube 2 slightly larger than the inserting section of syringe needle 1 outer diameter, outside main body
The outer diameter of pipe 2 is identical as the outer diameter of the main paragraph of syringe needle 1.
Water inlet pipe 4 is identical with the internal diameter of outlet pipe 5, wall thickness dimension is identical, and the wall thickness dimension range of the two is set as
0.1mm-0.5mm, internal diameter range are set as 0.5mm-1.5mm；4 length dimension range of water inlet pipe is set as 120mm-
240mm, 5 length dimension range of outlet pipe are set as 40mm-80mm.
Water tank 6 is Teflon water tank resistant to high temperature, is sleeved on outside the second end of main body outer tube 2, and passes through UV glue and master
External pipe 2 is adhesively fixed.
In above-mentioned microwave melt needle, water inlet pipe 4, outlet pipe 5, syringe needle 1, main body outer tube 2, water tank 6 etc. are respectively set to nothing
The component that magnetic material is prepared, so that the minimally invasive intervention microwave that the microwave melt needle can be used under Magnetic resonance imaging guidance disappears
Melt art.Nmr imaging technique without ionising radiation, image resolution ratio is high, soft tissue contrast is high, any multi-faceted imaging, at
Picture parameter is abundant, under the guidance of its image, can efficiently treat tumour, improve success rate of operation.
In above-described embodiment, UV glue be by ultraviolet light irradiation can rapid link glue, can be avoided the glue as
It deforms in the curing process.
Preferably, above-mentioned syringe needle 1 is inserted into main body outer tube 2 and is adhesively fixed with main body outer tube 2, compared with the prior art
In by the syringe needle 1 that is welded and fixed with coaxial cable 3, reliability, safety are higher, avoid taking off in the course of surgery
It falls.
Referring to Fig. 2, coaxial cable 3 provided in this embodiment includes the inner conductor of the coaxial cable set gradually from inside to outside
301,303 three-decker of coaxial cable insulated layer 302 and coaxial cable outer conductor.The appearance of circumferential recess setting coaxial cable 3
Face is specifically located at the outer surface of coaxial cable outer conductor 303.
Microwave ablation needle construction provided by the embodiment of the utility model is simple, easy to process, and is easily assembled.
The utility model embodiment also provides a kind of manufacturing method of microwave melt needle, wherein microwave melt needle is above-mentioned
The microwave melt needle that embodiment provides, specifically comprises the following steps:
Two circumferential recess are cut into the part that insertion needle 1 is used on the outer conductor of coaxial cable 3, wherein first week
It is located between the second circumferential recess 32 and the end face of the first end of the coaxial cable 3 to groove 31；First circumferential recess 31 with it is same
The distance of the first end end face of shaft cable 3 is L1, and the distance between the first circumferential recess 31 and the second circumferential recess 32 are L2, L1
Less than L2；
Coaxial cable outer conductor 303 at 3 first end of coaxial cable is connected to the welding of the inner conductor of the coaxial cable 301；
The first end of coaxial cable 3 is set to protrude into main body outer tube 2, and in the coaxial cable plug-in opening of insertion needle 1；By syringe needle
1 inserts and is fixed on the first end of main body outer tube 2.
Above-mentioned microwave melt needle is water-cooled microwave ablation needle, and specific manufacturing process is as follows:
By magnetic resonance compatible, and longer titanium alloy capillary is solidified with plastic water pipe by UV gluing knot, forms water inlet
Pipe 4；By magnetic resonance compatible, and the shorter titanium alloy capillary of length is solidified with plastic water pipe by UV gluing knot, and water outlet is formed
Pipe 5；
When the first end of coaxial cable 3 being made to protrude into main body outer tube 2,4 one end of water inlet pipe is inserted into main body outer tube 2, also,
It is inserted to water inlet pipe 4 close to the position of syringe needle 1；Carry out the step
It need to ensure that the end of coaxial cable 3 is inserted to the bottom of cable plug-in opening when rapid；
Later, the step of carrying out above-mentioned " syringe needle 1 is inserted and is fixed on the first end of main body outer tube 2 ", specifically in syringe needle 1
Inserting part smear marine glue resistant to high temperature, then make syringe needle 1 be inserted into main body outer tube 2 first end in be adhesively fixed；
Subsequently by the second end outer surface of 6 sets of Teflon water tank resistant to high temperature pipe 2 outside the main body, and using UV glue by water
Case 6 is bonded and fixed to outside the second end of main body outer tube 2；
Outlet pipe 5 is inserted into water tank 6, it is using UV glue that coaxial cable 3, water inlet pipe 4, outlet pipe 5 is Nian Jie with water tank 6 solid
Determine and seals；
The silver-plated radio frequency (RF) coaxial connector 7 of the aluminum of magnetic resonance compatible and the second end of coaxial cable 3 are welded and fixed；Finally
Needle handle 8 is installed.
Manufacturing method provided by the embodiment of the utility model is realized for producing microwave melt needle provided by the above embodiment
Not only tumor tissues are inactivated, but also avoid increasing ablation range, protection human normal tissue escapes injury.
Certainly, manufacturing method provided in this embodiment also has provided by the above embodiment in relation to the other of microwave melt needle
Effect, details are not described herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (9)
1. a kind of microwave melt needle characterized by comprising
Main body outer tube；
Syringe needle, the syringe needle are inserted into the first end of the main body outer tube and are fixedly connected with the main body outer tube；
Coaxial cable, the coaxial cable is inserted into the main body outer tube and the first end of the coaxial cable is inserted into the needle
In the coaxial cable plug-in opening of head；
The part that the coaxial cable is inserted into the syringe needle is opened up there are two circumferential recess, wherein the first circumferential recess and institute
The distance for stating the first end end face of coaxial cable is L1, and the distance between first circumferential recess and the second circumferential recess are
L2, L1 are less than L2；First circumferential recess be located at second circumferential recess and the coaxial cable first end end face it
Between.
2. microwave melt needle according to claim 1, which is characterized in that the range of L1 is set as 1mm-10mm；The model of L2
It encloses and is set as 1mm-10mm.
3. microwave melt needle according to claim 1, which is characterized in that the width range of the circumferential recess is 0.1mm-
1mm。
4. microwave melt needle according to claim 1 to 3, which is characterized in that the width of first circumferential recess
Degree is of same size with second circumferential recess.
5. microwave melt needle according to claim 1, which is characterized in that insert one end of the water inlet pipe of the microwave melt needle
Enter in the main body outer tube and close to the syringe needle；The water tank of the microwave melt needle is set with and is fixed on the main body outer tube
Outside second end；The outlet pipe of the microwave melt needle is inserted into the water tank；The port of the water tank, the coaxial cable, institute
It states water inlet pipe and the outlet pipe is adhesively fixed and is sealed by glue.
6. microwave melt needle according to claim 5, which is characterized in that the radio frequency (RF) coaxial connector of the microwave melt needle
It is welded in the second end of the coaxial cable；The radio frequency (RF) coaxial connector is located at outside the main body outer tube.
7. microwave melt needle according to claim 6, which is characterized in that it further include handle, the handle and the main body
Outer tube is fixedly connected, and wraps up the water tank；One end of the radio frequency (RF) coaxial connector in the handle and with the hand
Handle is fixedly connected.
8. microwave melt needle according to claim 6, which is characterized in that the water inlet pipe and the outlet pipe are respectively titanium
Alloy hollow pipe；The radio frequency (RF) coaxial connector is the silver-plated radio frequency (RF) coaxial connector of aluminum.
9. microwave melt needle according to claim 1, which is characterized in that the syringe needle include the main paragraph that is sequentially connected and
Section is inserted, the inserting section is inserted and is fixed in the main body outer tube, and the outer diameter of the inserting section is less than the main paragraph
Outer diameter；The coaxial cable plug-in opening of the syringe needle is through the inserting section and extends to inside the free end of the main paragraph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820248327.4U CN209059422U (en) | 2018-02-11 | 2018-02-11 | Microwave melt needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820248327.4U CN209059422U (en) | 2018-02-11 | 2018-02-11 | Microwave melt needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209059422U true CN209059422U (en) | 2019-07-05 |
Family
ID=67088027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820248327.4U Active CN209059422U (en) | 2018-02-11 | 2018-02-11 | Microwave melt needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209059422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392264A (en) * | 2018-02-11 | 2018-08-14 | 安徽大中润科技有限公司 | Microwave ablation needle and manufacturing method thereof |
| CN111839723B (en) * | 2020-08-19 | 2021-03-02 | 江苏普力优创科技有限公司 | Intelligent disposable microwave ablation needle and matching method thereof |
-
2018
- 2018-02-11 CN CN201820248327.4U patent/CN209059422U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392264A (en) * | 2018-02-11 | 2018-08-14 | 安徽大中润科技有限公司 | Microwave ablation needle and manufacturing method thereof |
| CN111839723B (en) * | 2020-08-19 | 2021-03-02 | 江苏普力优创科技有限公司 | Intelligent disposable microwave ablation needle and matching method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190820 Address after: Room 502, 34 655 Floor, Hehuan Road, Hefei High-tech Zone, Anhui Province Patentee after: Hefei Fusheng Medical Science and Technology Partnership (General Partnership) Address before: 230031 Embedded R&D Building 204-B3, Institute of Advanced Technology, China University of Science and Technology, No. 5089 Wangjiangxi Road, Hefei High-tech Zone, Anhui Province Patentee before: Anhui Fuqing Medical Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220315 Address after: 230000 building C5, national health big data Industrial Park, southwest corner of Xiyou road and kongtai Road, high tech Zone, Hefei, Anhui Province Patentee after: ANHUI SHUOJIN MEDICAL EQUIPMENT Co.,Ltd. Address before: 230088 Room 502, 5 / F, 34 Hehuan Road, high tech Zone, Hefei, Anhui Province Patentee before: Hefei Fusheng Medical Science and Technology Partnership (General Partnership) |