CN111407337A - Medical robot retractor - Google Patents
Medical robot retractor Download PDFInfo
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- CN111407337A CN111407337A CN202010267000.3A CN202010267000A CN111407337A CN 111407337 A CN111407337 A CN 111407337A CN 202010267000 A CN202010267000 A CN 202010267000A CN 111407337 A CN111407337 A CN 111407337A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
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- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
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Abstract
The invention discloses a medical robot retractor, which is characterized in that two retractor heads of two prying rods extend into an operation opening, then a control pull wire is fixed at one end of the retractor control end and wound on the retractor control end by rotating the retractor control end, so that a retractor control section is pulled to change the distance between the two retractor heads of the two prying rods, and the operation opening is retracted. The longer the length of the control stay wire wound on the retracting control end is, the more the two retracting heads are separated, the larger the opening degree of the retracting operation opening is, namely, the strength for pulling the retracting control section is controlled by controlling the length (the number of turns) of the control stay wire wound on the retracting control end, and the distance between the two retracting heads is changed, so that the size of the retracting operation opening is controlled. Through set up first attached control port on drawing the head, first attached control port is through the pressure in the attached control pipeline to hold the skin or the muscle of drawing the head contact through first attached control port.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a medical robot retractor.
Background
In the technical field of medical treatment, the retractor is used for prying open an operation opening of the epidermis of a patient to expose a position needing an operation under the epidermis, so that the operation is convenient to perform. Nowadays, the retractor is to adjust the size of the opening of the prying operation by adjusting the distance between two prying parts through two prying parts which can be opened and closed. However, when the opening is large, the pried opening easily slides, resulting in a failure to pry the opening. Some retractors have pointed contact positions between the bridge opening device and the surgical opening in order to solve the problem of sliding, but the retractors easily damage muscle tissues and skin tissues of the surgical opening. And the existing retractor is operated manually, and the size of the opening for retracting operation is not easy to control.
Disclosure of Invention
The present invention is directed to a medical robotic retractor for solving the above-mentioned problems of the prior art.
The embodiment of the invention provides a medical robot retractor, which comprises: the control assembly, the control stay wire and the two prying rods are arranged on the base;
one end of the prying rod is a retracting head, and the other end of the prying rod is a connecting head; the connecting heads of the two prying rods are fixedly connected; an adhesion control pipeline extending along the prying rod is arranged in the prying rod, one end of the adhesion control pipeline penetrates through the retractor head, and a first adhesion control port is formed in the retractor head; a retracting control section which is bent outwards is arranged between the retracting head of the prying rod and the connector, and a first retracting control position is arranged on one side of the retracting control section, which is far away from the other prying rod;
an installation part is arranged between the two prying rods and close to the connector;
the mounting part is provided with a second retraction control position;
the control assembly comprises an attachment control barrel and an attachment control rod;
the adhesion control barrel is barrel-shaped and is fixedly arranged on the mounting part;
the attachment control end of the attachment control rod extends into the cavity in the attachment control barrel and can move along the axial direction of the attachment control barrel; the retracting control end of the attaching control rod extends out of the attaching control barrel;
the bottom of the adhesion control barrel, which is far away from the adhesion control rod, is provided with a second adhesion control port;
one end of the adhesion control pipeline, which is far away from the first adhesion control port, is arranged at a position where the prying rod is close to the second adhesion control port and is communicated with the second adhesion control port through a hose so as to communicate the cavity in the adhesion control barrel with the adhesion control pipeline;
the outer wall of the adhesion control barrel far away from the bottom is provided with a clamping position;
one end of the control stay wire is fixedly arranged at the second traction control position and is far away from one end of the second attachment control port, the other end of the control stay wire penetrates through the first traction control position, one end of the control stay wire, which is close to the second attachment control port, penetrates through the clamping position and is fixed on the traction control end.
Optionally, a suction cup is disposed on the first attachment control port.
Optionally, the sucker is in a disc shape, an opening is formed in the bottom of the sucker, and a circle of protrusion and a circle of groove are formed between the edge of the sucker and the opening; a plurality of drip holes are formed in the bottom of the groove, and the opening is communicated with the first attachment control port.
Optionally, the retracting head is provided with a draining channel, and the draining channel is communicated with the plurality of draining holes.
Optionally, one side of the retracting head of the prying rod, which is far away from the other prying rod, is provided with a plurality of first attachment control ports.
Optionally, a suction cup is disposed on the first attachment control port.
Optionally, a sealing adhesive is disposed between the outer side of the adhesion control end and the inner wall of the adhesion control barrel to seal the cavity.
Optionally, the outer side of the attachment control end is provided with an external thread, and the inner wall of the attachment control barrel is provided with an internal thread;
the attachment control end is connected with the attachment control barrel through the matching of external threads and internal threads.
Optionally, the medical robotic retractor further comprises a power assembly;
the control assembly also comprises a driven shaft, and the power shaft is fixedly connected with one end of the retraction control end, which is far away from the attachment control end;
the power assembly comprises a power shaft, the power shaft is connected with the driven shaft through a belt, and the belt drives the driven shaft to rotate by controlling the rotation of the power shaft.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a medical robot retractor, which comprises: the control assembly, the control stay wire and the two prying rods are arranged on the base; one end of the prying rod is a retracting head, and the other end of the prying rod is a connecting head; the connecting heads of the two prying rods are fixedly connected; an adhesion control pipeline extending along the prying rod is arranged in the prying rod, one end of the adhesion control pipeline penetrates through the retractor head, and a first adhesion control port is formed in the retractor head; a retracting control section which is bent outwards is arranged between the retracting head of the prying rod and the connector, and a first retracting control position is arranged on one side of the retracting control section, which is far away from the other prying rod; an installation part is arranged between the two prying rods and close to the connector; the mounting part is provided with a second retraction control position; the control assembly comprises an attachment control barrel and an attachment control rod; the adhesion control barrel is barrel-shaped and is fixedly arranged on the mounting part; the attachment control end of the attachment control rod extends into the cavity in the attachment control barrel and can move along the axial direction of the attachment control barrel; the retracting control end of the attaching control rod extends out of the attaching control barrel; the bottom of the adhesion control barrel, which is far away from the adhesion control rod, is provided with a second adhesion control port; one end of the adhesion control pipeline, which is far away from the first adhesion control port, is arranged at a position where the prying rod is close to the second adhesion control port and is communicated with the second adhesion control port through a hose so as to communicate the cavity in the adhesion control barrel with the adhesion control pipeline; the outer wall of the adhesion control barrel far away from the bottom is provided with a clamping position; one end of the control stay wire is fixedly arranged at the second traction control position and is far away from one end of the second attachment control port, the other end of the control stay wire penetrates through the first traction control position, one end of the control stay wire, which is close to the second attachment control port, penetrates through the clamping position and is fixed on the traction control end.
When the medical robot retractor is required to be used for retracting an operation opening, two retracting heads of the two prying rods extend into the operation opening, and then the control end is retracted through rotation, so that the control pull wire is fixed at one end of the retracting control end and is wound at the retracting control end, and then the retracting control section is pulled to change the distance between the two retracting heads of the two prying rods, and further the operation opening is retracted. The longer the length of the control stay wire wound on the retracting control end is, the more the two retracting heads are separated, the larger the opening degree of the retracting operation opening is, namely, the strength for pulling the retracting control section is controlled by controlling the length (the number of turns) of the control stay wire wound on the retracting control end, and the distance between the two retracting heads is changed, so that the size of the retracting operation opening is controlled.
The larger the opening of the medical robot retractor for prying open the surgical opening, the more easily the pried skin or muscle slides off the medical robot retractor, resulting in failure in retracting the wound. For this purpose, by providing a first adhesion control port on the retraction head, the first adhesion control port draws the skin or muscle in contact with the retraction head through the first adhesion control port by the pressure inside the adhesion control conduit.
According to the embodiment of the invention, the adhesion control pipeline is communicated with the cavity in the adhesion control barrel, the adhesion control end of the adhesion control rod is screwed out of the cavity of the adhesion control barrel, the pressure in the cavity is reduced, so that the pressure in the adhesion control pipeline is reduced, the first adhesion control port can suck skin or muscle which is in contact with the retraction head, the failure of retracting a wound is prevented, and the risk of operation failure is reduced.
The more the control pull wire is wound on the retracting control end, the more the two retracting heads are separated, the larger the required adhesive force is, however, the more the control pull wire is wound on the retracting control end, the more the attaching control end is screwed out of the cavity of the attaching control barrel, the smaller the pressure in the cavity of the attaching control barrel is, the smaller the pressure in the attaching control pipeline is, the larger the suction force of the first attaching control port to the skin or muscle in contact with the retracting head is, so that the skin or muscle in contact with the retracting head is ensured not to slide out of the retracting head, and the stability and the effectiveness of the retracting wound are ensured.
Drawings
Fig. 1 is a schematic structural diagram of a medical robotic retractor 100 according to an embodiment of the present invention.
Fig. 2 is a top view of a suction cup 170 according to an embodiment of the present invention.
Fig. 3 is a left side view of a suction cup 170 according to an embodiment of the present invention.
The labels in the figure are: a medical robotic retractor 100; a control component 110; an adhesion control tub 111; an attachment control rod 112; an attachment control end 1121; retraction control end 1122; second attachment control port 1111; a clamping position 1112; a driven shaft 113; a control cord 120; a pry bar 130; a tow head 131; a connecting head 132; a first attachment control port 1331; a third attachment control port 1132; a retraction control section 134; a first retraction control site 135; a mounting portion 140; a second retraction control site 141; a control pull wire 150; a power assembly 160; a power shaft 161; a driven shaft 113; a suction cup 170; the projection 171; a recess 172; and a drip hole 173.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a medical robotic retractor 100 according to an embodiment of the present invention includes: a control assembly 110, a control cable 120, and two pry bars 130.
One end of the pry bar 130 is a retracting head 131 and the other end is a connecting head 132. The connectors 132 of the two pry bars 130 are fixedly connected. An attachment control pipe extending along the pry rod 130 is formed in the pry rod 130, and one end of the attachment control pipe penetrates the retractor head 131 to form a first attachment control port 1331 in the retractor head 131. A retracting control section 134 which is bent outwards is arranged between the retracting head 131 and the connecting head 132 of the prying rod 130, and a first retracting control position 135 is arranged on one side, away from the other prying rod 130, of the retracting control section 134.
A mounting portion 140 is provided between the two pry bars 130 near the connector 131. The mounting portion 140 is provided with a second retraction control position 141. The control assembly 110 includes an attachment control barrel 111 and an attachment control lever 112. The adhesion control barrel 111 has a barrel shape, and the adhesion control barrel 111 is fixedly provided on the mounting portion 140. The attachment control end 1121 of the attachment control rod 112 extends into the cavity of the attachment control barrel 111 and can move along the axial direction of the attachment control barrel 111, and the retraction control end 1122 of the attachment control rod 112 extends out of the attachment control barrel 111.
The bottom of the adhesion control barrel 111 far away from the adhesion control rod 112 is provided with a second adhesion control port 1111, an opening (a third adhesion control port 1132) at one end of the adhesion control pipe far away from the first adhesion control port 1331 is arranged at a position of the prying bar 130 close to the second adhesion control port 1111, and is communicated with the second adhesion control port 1111 through a hose (the third adhesion control port 1132 is communicated with the second adhesion control port 1111 through a hose), so as to communicate the cavity of the adhesion control barrel 111 with the adhesion control pipe. The outer wall of the attachment control barrel 111 far away from the bottom is provided with a clamping position 1112.
One end of the control pulling wire 150 is fixedly arranged at one end of the second retracting control position 141 far away from the second attachment control port 1111, and the other end of the control pulling wire 150 passes through the first retracting control position 135, passes through one end of the second retracting control position 141 close to the second attachment control port 1111, passes through the clamping position 1112, and is fixed on the retracting control end 1122.
When the medical robotic retractor 100 is used for retracting an operation opening, the two retracting heads 131 of the two prying rods 130 are extended into the operation opening, and then the retracting control end 1122 is rotated, so that the end of the control pulling wire 150 fixed at the retracting control end 1122 is wound on the retracting control end 1122, and the retracting control section 134 is pulled, so as to change the distance between the two retracting heads 131 of the two prying rods 130, thereby retracting the operation opening. The opening degree of the opening of the retracting operation is larger as the control pulling wire 150 is wound around the retracting control end 1122 longer, that is, the force for pulling the retracting control section 134 is controlled by controlling the length (number of turns) of the control pulling wire 150 wound around the retracting control end 1122, and the distance between the two retracting ends 131 is changed, so as to control the size of the opening of the retracting operation.
However, the larger the opening of the medical robotic retractor 100 to pry open the surgical opening, the more easily the pried skin or muscle slips off the medical robotic retractor 100, resulting in a failure to retract the wound. To this end, by providing the first adhesion control port 1331 on the retracting head 131, the first adhesion control port 1331 passes the pressure inside the adhesion control conduit, thereby sucking the skin or muscle in contact with the retracting head 131 through the first adhesion control port 1331.
In the embodiment of the present invention, the adhesion control pipe is communicated with the cavity in the adhesion control barrel 111, the adhesion control end 1121 of the adhesion control rod 112 is screwed out of the cavity of the adhesion control barrel 111, and the pressure in the cavity is reduced, so that the pressure in the adhesion control pipe is reduced, and thus the first adhesion control port 1331 can suck the skin or muscle contacting with the retraction head 131, thereby preventing the retraction wound from failing and reducing the risk of the operation failure.
The more the control pulling wire 150 is wound around the retracting control end 1122, the more the two retracting heads 131 are separated, the greater the required adhesion force is, however, the more the control pulling wire 150 is wound around the retracting control end 1122, the more the attachment control end 1121 is screwed out of the cavity of the attachment control barrel 111, the lower the pressure in the cavity of the attachment control barrel 111 is, the pressure in the attachment control pipeline is reduced, the greater the suction force of the first attachment control port 1331 to the skin or muscle in contact with the retracting heads 131 is, so that the skin or muscle in contact with the retracting heads 131 is ensured not to slip out of the retracting heads 131, and the stability and effectiveness of the retracting wounds are ensured.
In order to more easily and securely suck the skin or muscle in contact with the tow head 131, the suction cup 170 is provided on the first attachment control port 1331. Sucking the skin or muscle by the suction cup 170 increases an area of force application, so that the medical robot retractor 100 more securely retracts the operation opening.
As shown in fig. 2 and 3, the suction cup 170 is shaped like a disk, an opening is formed at the bottom of the suction cup 170, a circle of protrusions 171 and a circle of grooves 172 are formed between the edge of the suction cup and the opening, a plurality of drip holes 173 are formed at the bottom of the grooves, and the opening is communicated with the first adhesion control port.
Since the skin or muscle tissue of the opening for the retraction operation may have a liquid such as blood, if the skin or muscle tissue is directly contacted through the first adhesion control port 1331, a large amount of the liquid such as blood may be sucked into the adhesion control tube, which is not hygienic on the one hand, and on the other hand, the liquid such as blood sucked into the adhesion control tube for a long time may block the adhesion control tube, affecting the use effect of the medical robot retractor 100.
In order to prevent liquid from sucking into the adhesion control pipeline, a draining channel is arranged on the retractor head and communicated with the plurality of draining holes, liquid sucked by the sucker is drained from the draining holes and enters the draining channel to be discharged, and the adhesion control pipeline is prevented from being blocked by the liquid.
Optionally, the side of the retracting head 131 of the pry bar 130 away from the other pry bar 131 is provided with a plurality of first attachment control ports 1331 to increase the attachment of the skin or muscle tissue of the surgical opening. A suction cup is provided on each first attachment control port 1331.
In order to ensure the air tightness, a sealing glue is disposed between the outer side of the attachment control end 1121 and the inner wall of the attachment control barrel 111 to seal the cavity.
The outer side of the attachment control end 1121 is provided with an external thread, the inner wall of the attachment control barrel 111 is provided with an internal thread, and the attachment control end 1121 and the attachment control barrel 111 are connected in a matched mode through the external thread and the internal thread. The attachment control end 1121 is screwed in and out of the attachment control barrel 111 to adjust the pressure inside the cavity, so as to adjust the attachment strength between the surgical opening and the retracting head 131.
In order to facilitate controlling the size of the retracted surgical opening of the retractor and more stably and accurately adsorbing the skin or muscle tissue of the surgical opening, the medical robotic retractor 100 further includes a power assembly 160. Control assembly 110 further includes a driven shaft 113, and power shaft 113 is fixedly connected to an end of retraction control end 1122 remote from attachment control end 1121. The power assembly 160 comprises a power shaft 161, the power shaft 161 is connected with the driven shaft 113 through a belt, and the belt drives the driven shaft 113 to rotate by controlling the rotation of the power shaft 161, so that the opening degree of the two retractor heads 131 can be adjusted, and the adhesion force between the retractor heads 131 and the operation opening can be adjusted. The larger the opening, the larger the adhesion force.
Optionally, the power assembly 160 further comprises a motor, the power shaft 161 is connected with the motor, and the power shaft 161 is powered by the motor to adjust the opening degree of the two retractor heads 131 and the adhesion between the retractor heads 131 and the surgical opening.
Optionally, the mounting portion 140 is provided with mounting holes for mounting on a robot arm of the robot.
Claims (9)
1. A medical robotic retractor, comprising: the control assembly, the control stay wire and the two prying rods are arranged on the base;
one end of the prying rod is a retracting head, and the other end of the prying rod is a connecting head; the connecting heads of the two prying rods are fixedly connected; an adhesion control pipeline extending along the prying rod is arranged in the prying rod, one end of the adhesion control pipeline penetrates through the retractor head, and a first adhesion control port is formed in the retractor head; a retracting control section which is bent outwards is arranged between the retracting head of the prying rod and the connector, and a first retracting control position is arranged on one side of the retracting control section, which is far away from the other prying rod;
an installation part is arranged between the two prying rods and close to the connector;
the mounting part is provided with a second retraction control position;
the control assembly comprises an attachment control barrel and an attachment control rod;
the adhesion control barrel is barrel-shaped and is fixedly arranged on the mounting part;
the attachment control end of the attachment control rod extends into the cavity in the attachment control barrel and can move along the axial direction of the attachment control barrel; the retracting control end of the attaching control rod extends out of the attaching control barrel;
the bottom of the adhesion control barrel, which is far away from the adhesion control rod, is provided with a second adhesion control port;
one end of the adhesion control pipeline, which is far away from the first adhesion control port, is arranged at a position where the prying rod is close to the second adhesion control port and is communicated with the second adhesion control port through a hose so as to communicate the cavity in the adhesion control barrel with the adhesion control pipeline;
the outer wall of the adhesion control barrel far away from the bottom is provided with a clamping position;
one end of the control pull wire is fixedly arranged at one end, far away from the second attachment control port, of the second retraction control position, the other end of the control pull wire penetrates through the first retraction control position, one end, close to the second attachment control port, of the second retraction control position penetrates through the first retraction control position, and penetrates through the clamping position to be fixed to the retraction control end.
2. A medical robotic retractor according to claim 1, wherein a suction cup is provided on the first attachment control port.
3. The medical robotic retractor of claim 2, wherein the suction cup is shaped as a disk, the bottom of the suction cup has an opening, and a ring of protrusions and a ring of grooves are formed between the edge of the suction cup and the opening; a plurality of drip holes are formed in the bottom of the groove, and the opening is communicated with the first attachment control port.
4. The medical robotic retractor of claim 3, wherein a weep channel is disposed on the retracting head, the weep channel being in communication with the plurality of weep holes.
5. A medical robotic retractor according to claim 1, wherein a side of the retractor head of a pry bar remote from the other pry bar is provided with a plurality of first attachment control ports.
6. A medical robotic retractor according to claim 5, wherein a suction cup is provided on the first attachment control port.
7. The medical robotic retractor of claim 1, wherein a sealing gel is disposed between an outer side of the attachment control end and an inner wall of the attachment control barrel to seal the cavity.
8. The medical robotic retractor of claim 7, wherein an outer side of the attachment control end is provided with an external thread, and an inner wall of the attachment control barrel is provided with an internal thread;
the attachment control end is connected with the attachment control barrel through the matching of external threads and internal threads.
9. The medical robotic retractor of claim 1, further comprising a power assembly;
the control assembly also comprises a driven shaft, and the power shaft is fixedly connected with one end of the retraction control end, which is far away from the attachment control end;
the power assembly comprises a power shaft, the power shaft is connected with the driven shaft through a belt, and the belt drives the driven shaft to rotate by controlling the rotation of the power shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267000.3A CN111407337B (en) | 2020-04-08 | 2020-04-08 | Medical robot retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010267000.3A CN111407337B (en) | 2020-04-08 | 2020-04-08 | Medical robot retractor |
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| Publication Number | Publication Date |
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| CN111407337A true CN111407337A (en) | 2020-07-14 |
| CN111407337B CN111407337B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010267000.3A Active CN111407337B (en) | 2020-04-08 | 2020-04-08 | Medical robot retractor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014033426A1 (en) * | 2012-08-31 | 2014-03-06 | Karoo Marc Philip Daveraj | Surgical retractors |
| US20140128766A1 (en) * | 2012-11-05 | 2014-05-08 | Anthony V. Beran | Foley catheter |
| CN205286428U (en) * | 2016-01-11 | 2016-06-08 | 南阳医学高等专科学校 | Surgery retractor for surgery |
| CN205758624U (en) * | 2016-05-30 | 2016-12-07 | 中国人民解放军第四军医大学 | A kind of thorax cavity retractor with smog collecting function |
| CN207707954U (en) * | 2017-06-12 | 2018-08-10 | 刘文刚 | Retractor |
| CN109528383A (en) * | 2018-12-07 | 2019-03-29 | 上海交通大学医学院附属第九人民医院 | Percutaneous stomach stoma merging guiding device and its operating method |
| CN110251169A (en) * | 2019-07-09 | 2019-09-20 | 南阳市中心医院 | A kind of surgical cervical vertebra tractor |
-
2020
- 2020-04-08 CN CN202010267000.3A patent/CN111407337B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014033426A1 (en) * | 2012-08-31 | 2014-03-06 | Karoo Marc Philip Daveraj | Surgical retractors |
| US20140128766A1 (en) * | 2012-11-05 | 2014-05-08 | Anthony V. Beran | Foley catheter |
| CN205286428U (en) * | 2016-01-11 | 2016-06-08 | 南阳医学高等专科学校 | Surgery retractor for surgery |
| CN205758624U (en) * | 2016-05-30 | 2016-12-07 | 中国人民解放军第四军医大学 | A kind of thorax cavity retractor with smog collecting function |
| CN207707954U (en) * | 2017-06-12 | 2018-08-10 | 刘文刚 | Retractor |
| CN109528383A (en) * | 2018-12-07 | 2019-03-29 | 上海交通大学医学院附属第九人民医院 | Percutaneous stomach stoma merging guiding device and its operating method |
| CN110251169A (en) * | 2019-07-09 | 2019-09-20 | 南阳市中心医院 | A kind of surgical cervical vertebra tractor |
Also Published As
| Publication number | Publication date |
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| CN111407337B (en) | 2021-05-18 |
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Inventor after: Li Guizhen Inventor after: Gu Zhongping Inventor after: Jing Pengyu Inventor after: Feng Xingyu Inventor before: Feng Xingyu |
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Effective date of registration: 20210420 Address after: 710038, 1 Temple Road, Baqiao District, Shaanxi, Xi'an Applicant after: Li Guizhen Address before: Unit 1, 1 / F, North building, Yi'an South Village, Tongshan District, Xuzhou City, Jiangsu Province, 221000 Applicant before: Feng Xingyu |
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