CN111420175A - Medical infusion bottle plug - Google Patents
Medical infusion bottle plug Download PDFInfo
- Publication number
- CN111420175A CN111420175A CN202010409862.5A CN202010409862A CN111420175A CN 111420175 A CN111420175 A CN 111420175A CN 202010409862 A CN202010409862 A CN 202010409862A CN 111420175 A CN111420175 A CN 111420175A
- Authority
- CN
- China
- Prior art keywords
- plug
- needle
- hole
- elastic sheet
- infusion bottle
- 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.)
- Granted
Links
- 238000001802 infusion Methods 0.000 title claims abstract description 44
- 241001411320 Eriogonum inflatum Species 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 208000024827 Alzheimer disease Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010013954 Dysphoria Diseases 0.000 description 1
- 206010039966 Senile dementia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000005224 forefinger Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
The invention relates to the technical field of medical instruments, in particular to a medical infusion bottle plug, which comprises a plug body and an anti-falling part, wherein the plug body comprises a needle seat and a needle head protruding out of one side of the needle seat; the side wall of the barrel is provided with a avoiding through hole, the inner wall of the avoiding through hole is provided with a spring plate, and the spring plate extends out of the avoiding through hole in an initial state; the fixing ring is slidably sleeved on the outer wall of the cylinder body so as to enable the elastic sheet to be abutted into the through hole from the initial position when the fixing ring slides to the first position, and to be loosened when the fixing ring slides to the second position towards one side of the needle base, and a gap for accommodating a bottle stopper of an infusion bottle is formed between the fixing ring and the elastic sheet. According to the technical scheme of the invention, the sold plug can be improved to have the anti-drop function, and the plug can be prevented from being detached and reused by lawless persons.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a plug of a medical infusion bottle.
Background
At present, the infusion apparatus used in clinic mainly comprises a plug 10', an infusion tube, a Murphy dropper, a flow control switch, a puncture needle head and the like. As shown in fig. 1, the plug 10 'comprises a needle base 1' and a needle 2 'protruding from one side 11' of the needle base 1 ', when the infusion apparatus is used for infusion of a patient, the plug 10' is inserted into the infusion bottle from a rubber plug at the opening of the infusion bottle, for the young, or the patient with dysphoria and senile dementia, the plug 10 'is easy to be pulled out from the infusion bottle, and the plug 10' after being pulled out is easy to be polluted, so that the medical staff has to replace the whole infusion apparatus.
In order to prevent the plug from falling off from the infusion bottle, patent No. CN103212141B discloses a medical infusion bottle plug, as shown in FIG. 2, the plug is provided with an anti-falling structure, the anti-falling structure comprises two root small holes 18 and two needle base holes 17 which are arranged on a needle head 10, the root small holes 18 are positioned at the upper part of a needle base 12, and the needle base holes 17 are positioned at the lower part of the needle base 12; the needle 10 is internally provided with a plug-securing plate 20, and the plug-securing plate 20 is made of an elastic material. The plug fixing piece 20 has two fixing bosses 29 at an upper portion thereof and two button bosses 27 at a lower portion thereof, the fixing bosses 29 being adapted to protrude from the root apertures 18, and the button bosses 27 being adapted to protrude from the hub apertures 17. When in use, the button convex cap 27 is firstly pressed down by a thumb and a forefinger, and the plug fixing sheet 20 is forced to be in an arc shape by the pressure action, so that the fixing convex cap 29 retracts into the root small hole 18; then the needle 10 is inserted into the infusion bottle through the rubber plug 32; then the button convex cap 27 is loosened, the plug fixing piece 20 restores the original shape or natural shape under the elastic action, so that the fixing convex cap 29 passes through the root small hole 18, and the whole needle head 10 is clamped and does not slide down due to the raised fixing convex cap 29 positioned above the rubber plug 32 of the infusion bottle, thereby playing the role of anti-falling and fixing.
Although the plug of the medical infusion bottle in the patent is improved in the prior art, the plug is not easy to fall off from the infusion bottle, the existing plug is very small, and the small root hole 18 and the needle base hole 17 are formed in the plug, so that the structural strength of the plug is very weak, and the plug is easy to break; in addition, for the existing sold plug without the anti-drop structure, the plug without the anti-drop structure can only be discarded, and then the plug with the anti-drop structure is purchased again, which is a huge waste for the sold plug without the anti-drop structure, so that how to reasonably utilize the sold plug without the anti-drop structure and enable the sold plug without the anti-drop structure to meet the anti-drop requirement is a problem which needs to be solved urgently by technical personnel in the field.
In addition, the plug can be stained with medicines after being used to become a dangerous article, generally, the plug needs to be sent to a professional mechanism for scrapping treatment after being used, but still a lawbreaker can detach the plug from an infusion bottle, so that the polluted plug is reused by the lawbreaker, and the potential safety hazard is very high.
Disclosure of Invention
In view of this, the invention provides a plug for a medical infusion bottle, which mainly solves the problems that: how to improve a sold plug to enable the sold plug to have a separation prevention function and prevent the plug from being detached and reused by lawless persons.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
the embodiment of the invention provides a plug of a medical infusion bottle, which comprises a plug body, wherein the plug body comprises a needle base and a needle head protruding out of one side of the needle base; the anti-falling part comprises a barrel body and a fixing ring, the barrel body is fixedly sleeved on the needle head, and one end of the barrel body is abutted against one side of the needle seat; a position-avoiding through hole is formed in the side wall of the cylinder, an elastic sheet is arranged on the inner wall of the position-avoiding through hole, and the elastic sheet extends out of the position-avoiding through hole in an initial state; the fixing ring is slidably sleeved on the outer wall of the cylinder body so as to enable the elastic sheet to be abutted into the through hole from the initial position when the fixing ring slides to the first position, and to be released when the fixing ring slides to the second position towards one side of the needle base, and a gap for accommodating a bottle stopper of an infusion bottle is formed between the fixing ring and the elastic sheet; the needle seat is arranged on the needle seat, the barrel.
By the technical scheme, the medical infusion bottle plug at least has the following beneficial effects:
1. for a processed or sold plug body without an anti-disengaging structure, the anti-disengaging piece can be quickly refitted into a plug with the anti-disengaging structure only by mounting the anti-disengaging piece on the plug body, and the refitting is convenient and quick, so that the resources of the existing processed plug body can be effectively utilized, and the resource waste can be avoided;
2. when the plug is inserted into the infusion bottle through the rubber plug, the plug can not be pulled out, so that a lawbreaker can be prevented from detaching the plug from the infusion bottle for reuse.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a prior art plug construction;
FIG. 2 is a schematic view of another plug of the prior art;
fig. 3 is an exploded view of a plug of a medical infusion bottle according to an embodiment of the present invention;
FIG. 4 is a schematic view of the assembly of the medical infusion bottle plug of FIG. 3 with the retaining ring in a first position;
fig. 5 is a schematic structural view of the medical infusion bottle plug of the embodiment of the invention inserted into the rubber stopper of the infusion bottle to make the fixing ring at the second position.
Reference numerals: 1. a needle seat; 2. a needle head; 3. a drop-off prevention member; 4. a rubber plug 11 and one side of the needle seat; 30. avoiding a through hole; 31. a barrel; 32. a stationary ring; 301. one end of the cylinder body; 311. a spring plate; 312. a guide slope.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly. In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
As shown in fig. 3, a plug for a medical infusion bottle according to an embodiment of the present invention includes a plug body 10, wherein the plug body 10 includes a needle holder 1 and a needle 2 protruding from one side 11 of the needle holder 1. The plug body 10 is a plug without an anti-separation structure in the prior art (see the structure in fig. 1 in particular). The plug of the medical infusion bottle also comprises an anti-falling part 3. The retaining member 3 includes a cylindrical body 31 and a retainer ring 32. As shown in fig. 4, the barrel 31 is configured to be fixedly disposed on the needle 2, for example, the barrel 31 may be fixed relative to the needle 2 by interference fit. One end 301 of the barrel 31 abuts one side 11 of the hub 1. The sidewall of the barrel 31 is provided with a clearance through hole 30, the inner wall of the clearance through hole 30 is provided with a spring sheet 311, and the spring sheet 311 extends out of the clearance through hole 30 in an initial state (as shown in fig. 3). The fixed ring 32 is slidably sleeved on the outer wall of the cylinder 31, and the fixed ring 32 may be a flexible rubber ring or a metal ring. As shown in fig. 4, the fixing ring 32 is used for pushing the elastic sheet 311 into the through hole from the initial position when sliding to the first position; as shown in fig. 5, the fixing ring 32 is further used for releasing the elastic sheet 311 when sliding to the side 11 of the needle holder 1 to the second position, and a gap for accommodating the rubber stopper 4 of the infusion bottle is formed between the elastic sheet 311 and the elastic sheet 311, at this time, the elastic sheet 311 restores to deform and extends out of the clearance through hole 30 again.
When the medical infusion bottle plug is used, as shown in fig. 4, firstly, the cylinder 31 of the anti-falling part 3 is sleeved on the needle 2, then the fixing ring 32 is sleeved on the cylinder 31, the fixing ring 32 slides to the first position, and at this time, the fixing ring 32 presses the elastic sheet 311, and the elastic sheet 311 is pressed into the avoiding through hole 30; as shown in fig. 5, the needle 2 is then inserted into the rubber stopper 4 of the infusion bottle, the needle 2 drives the cylinder 31 to be inserted into the infusion bottle together, because the fixing ring 32 can slide relative to the cylinder 31, the cylinder 31 is pushed to the second position by the rubber stopper in the process of being inserted together with the needle 2, at this time, because of no limitation of the fixing ring 32, the elastic sheet 311 recovers deformation and stretches out of the avoiding through hole 30, the lower end of the elastic sheet 311 abuts against the upper end of the rubber stopper 4, so that the cylinder 31 connected with the elastic sheet 311 and the needle 2 fixed with the cylinder 31 can be prevented from being separated from the rubber stopper 4, and the purpose of preventing the plug from falling off is achieved.
As can be seen from the above example, as shown in fig. 3, for a sold plug body 10 without an anti-disengaging structure, the plug body can be quickly modified into a plug with an anti-disengaging structure only by installing the anti-disengaging part 3 thereon, specifically, the modification can be realized only by sleeving the processed anti-disengaging part 3 on the existing plug body 10, and the modification is convenient and fast, so that the resources of the existing processed plug body 10 can be effectively utilized, and the resource waste can not be caused.
In addition, as shown in fig. 5, after the plug body 10 of the present invention drives the cylinder 31 to be inserted into the infusion bottle through the rubber stopper 4, the opened elastic sheet 311 will abut against the rubber stopper 4, on one hand, the plug can be prevented from falling off from the infusion bottle, on the other hand, the plug can be prevented from being pulled out from the infusion bottle after the infusion is completed, so that the plug can be prevented from being detached from the infusion bottle for reuse by a lawbreaker.
Preferably, as shown in fig. 4, the elastic sheet 311 may be a straight strip, one end of the elastic sheet 311 is connected to one side of the avoiding through hole 30, which is away from the needle seat 1, so that after the fixing ring 32 is sleeved on the first position of the barrel 31, the whole elastic sheet 311 can be completely supported to the avoiding through hole 30, and thus, the process of inserting the fixing ring 32 into the rubber plug 4 cannot be interfered.
The elastic piece 311 may be integrally formed on the cylinder 31, for example, both the elastic piece 311 and the cylinder 31 may be plastic pieces, and both the elastic piece 311 and the cylinder 31 may be integrally injection molded; or both the elastic sheet 311 and the cylinder 31 are metal pieces, and the elastic sheet 311 can be integrally formed on the cylinder 31 in a welding manner. Wherein, what kind of mode specifically chooses can be selected according to actual need.
As shown in fig. 4, the barrel 31 may be in a straight tube shape, and an outer side wall of an end of the barrel facing away from the needle holder 1 is provided with a guiding inclined plane 312 in a truncated cone shape, the guiding inclined plane 312 in the truncated cone shape has a small opening end and a large opening end, a diameter of the small opening end is consistent with an outer diameter of the needle 2, and a diameter of the large opening end is consistent with an outer diameter of the barrel 31. The guide slope 312 and the cylinder 31 are both straight tubes, which facilitates the cylinder 31 to be inserted into the infusion bottle from the rubber stopper 4.
Further, as shown in fig. 5, the number of the elastic pieces 311 may be multiple and be uniformly distributed in a circular shape along the circumferential direction of the cylinder 31. Each elastic sheet 311 corresponds to one avoiding through hole 30. In this example, the anti-separation performance of the plug can be further improved by increasing the number of the elastic pieces 311.
In a specific application example, the number of the elastic sheets 311 and the anti-bit through holes 30 is four.
Here, it should be noted that: in the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (1)
1. A plug for a medical infusion bottle comprises a plug body (10), wherein the plug body (10) comprises a needle base (1) and a needle (2) protruding out of one side (11) of the needle base (1), and is characterized by further comprising an anti-falling part (3);
the anti-falling part (3) comprises a barrel body (31) and a fixing ring (32), the barrel body (31) is fixedly sleeved on the needle head (2), and one end (301) of the barrel body is abutted to one side (11) of the needle seat (1); a avoiding through hole (30) is formed in the side wall of the cylinder body (31), an elastic sheet (311) is arranged on the inner wall of the avoiding through hole (30), and the elastic sheet (311) extends out of the avoiding through hole (30) in an initial state;
the fixing ring (32) is slidably sleeved on the outer wall of the barrel (31) so as to enable the elastic sheet (311) to abut against the through hole from the initial position when sliding to the first position, and to release the elastic sheet (311) when sliding to the second position towards one side (11) of the needle base (1), and a gap for accommodating a bottle stopper of an infusion bottle is formed between the elastic sheet (311) and the fixing ring (32);
wherein, barrel (31) be used for with syringe needle (2) interference fit, barrel (31) are the straight tube form, and deviate from the lateral wall of needle file (1) one end is equipped with and is circular truncated cone form direction inclined plane (312), retainer plate (32) are flexible rubber circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409862.5A CN111420175B (en) | 2020-05-15 | 2020-05-15 | Medical infusion bottle plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010409862.5A CN111420175B (en) | 2020-05-15 | 2020-05-15 | Medical infusion bottle plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111420175A true CN111420175A (en) | 2020-07-17 |
| CN111420175B CN111420175B (en) | 2021-11-02 |
Family
ID=71553003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010409862.5A Active CN111420175B (en) | 2020-05-15 | 2020-05-15 | Medical infusion bottle plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111420175B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112472916A (en) * | 2020-11-30 | 2021-03-12 | 江苏松泽医疗科技有限公司 | Multi-channel puncture outfit |
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| US6241710B1 (en) * | 1999-12-20 | 2001-06-05 | Tricardia Llc | Hypodermic needle with weeping tip and method of use |
| CN201223598Y (en) * | 2008-07-08 | 2009-04-22 | 袁小婷 | Once-used infusion device |
| WO2010061742A1 (en) * | 2008-11-25 | 2010-06-03 | 株式会社ジェイ・エム・エス | Connector |
| US20110276014A1 (en) * | 2009-03-18 | 2011-11-10 | Hideya Saitoh | Anesthetic compound needle |
| CN206167505U (en) * | 2016-07-30 | 2017-05-17 | 西安交通大学第一附属医院 | Umbrella formula anti -drop transfusion system |
| CN208097067U (en) * | 2017-09-11 | 2018-11-16 | 王娟 | The anti-dropout of infusion apparatus draws liquid needle |
| CN208541639U (en) * | 2017-08-03 | 2019-02-26 | 安徽迈菲思医疗器械有限公司 | A kind of safty pin |
| CN208893350U (en) * | 2018-05-31 | 2019-05-24 | 江苏丞宇米特医疗科技有限公司 | Bottle inserting pin and its mounting and matching structure |
| CN109939295A (en) * | 2019-04-30 | 2019-06-28 | 吉林大学第一医院 | A spring-lifted anti-dropping infusion set needle |
| CN110064092A (en) * | 2019-04-30 | 2019-07-30 | 吉林大学第一医院 | A kind of anti-dropout infusion device puncture outfit |
| CN209679190U (en) * | 2018-12-18 | 2019-11-26 | 成都市青白江区人民医院 | A kind of transfusion needle |
| CN209695974U (en) * | 2018-11-08 | 2019-11-29 | 郑州儿童医院 | Anti-drop infusion puncture device |
| CN209933664U (en) * | 2019-03-20 | 2020-01-14 | 华中科技大学同济医学院附属协和医院 | Anti-pull-off infusion apparatus |
-
2020
- 2020-05-15 CN CN202010409862.5A patent/CN111420175B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6241710B1 (en) * | 1999-12-20 | 2001-06-05 | Tricardia Llc | Hypodermic needle with weeping tip and method of use |
| CN201223598Y (en) * | 2008-07-08 | 2009-04-22 | 袁小婷 | Once-used infusion device |
| WO2010061742A1 (en) * | 2008-11-25 | 2010-06-03 | 株式会社ジェイ・エム・エス | Connector |
| US20110276014A1 (en) * | 2009-03-18 | 2011-11-10 | Hideya Saitoh | Anesthetic compound needle |
| CN206167505U (en) * | 2016-07-30 | 2017-05-17 | 西安交通大学第一附属医院 | Umbrella formula anti -drop transfusion system |
| CN208541639U (en) * | 2017-08-03 | 2019-02-26 | 安徽迈菲思医疗器械有限公司 | A kind of safty pin |
| CN208097067U (en) * | 2017-09-11 | 2018-11-16 | 王娟 | The anti-dropout of infusion apparatus draws liquid needle |
| CN208893350U (en) * | 2018-05-31 | 2019-05-24 | 江苏丞宇米特医疗科技有限公司 | Bottle inserting pin and its mounting and matching structure |
| CN209695974U (en) * | 2018-11-08 | 2019-11-29 | 郑州儿童医院 | Anti-drop infusion puncture device |
| CN209679190U (en) * | 2018-12-18 | 2019-11-26 | 成都市青白江区人民医院 | A kind of transfusion needle |
| CN209933664U (en) * | 2019-03-20 | 2020-01-14 | 华中科技大学同济医学院附属协和医院 | Anti-pull-off infusion apparatus |
| CN109939295A (en) * | 2019-04-30 | 2019-06-28 | 吉林大学第一医院 | A spring-lifted anti-dropping infusion set needle |
| CN110064092A (en) * | 2019-04-30 | 2019-07-30 | 吉林大学第一医院 | A kind of anti-dropout infusion device puncture outfit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112472916A (en) * | 2020-11-30 | 2021-03-12 | 江苏松泽医疗科技有限公司 | Multi-channel puncture outfit |
| CN112472916B (en) * | 2020-11-30 | 2022-08-02 | 江苏松泽医疗科技有限公司 | Multi-channel puncture outfit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111420175B (en) | 2021-11-02 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Lei Inventor after: Zhu Xiaofeng Inventor after: Zhao Rong Inventor after: Gu Changde Inventor before: Gu Changde |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211019 Address after: No. 228, Jingui Road, Xian'an District, Xianning City, Hubei Province, 437100 Applicant after: XIANNING CENTRAL Hospital Address before: 153000 Building 5, Zhanqian community, Yichun District, Yichun City, Heilongjiang Province Applicant before: Gu Changde |
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| GR01 | Patent grant |