CN107929874B - Needle-punching prevention assembly of safety indwelling needle and safety indwelling needle - Google Patents
Needle-punching prevention assembly of safety indwelling needle and safety indwelling needle Download PDFInfo
- Publication number
- CN107929874B CN107929874B CN201711350745.0A CN201711350745A CN107929874B CN 107929874 B CN107929874 B CN 107929874B CN 201711350745 A CN201711350745 A CN 201711350745A CN 107929874 B CN107929874 B CN 107929874B
- Authority
- CN
- China
- Prior art keywords
- needle
- puncture
- protective
- rear end
- protective shell
- 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.)
- Active
Links
- 230000002265 prevention Effects 0.000 title description 5
- 238000004080 punching Methods 0.000 title description 2
- 230000001681 protective effect Effects 0.000 claims abstract description 58
- 230000000903 blocking effect Effects 0.000 claims description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 230000006378 damage Effects 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 206010013954 Dysphoria Diseases 0.000 description 1
- 206010073753 Fear of injection Diseases 0.000 description 1
- 208000012266 Needlestick injury Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000007796 conventional method 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
- 230000008451 emotion Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 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
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an anti-needling assembly of a safe indwelling needle and the safe indwelling needle, wherein the anti-needling assembly comprises a protective shell and a protective sheet which is arranged in the protective shell and is used for preventing a needle point of a puncture needle from extending out of the protective shell, double protection of the front end and the rear end of the anti-needling assembly is realized, the risk of puncture injury caused by the fact that the needle point extends out of a protective shell is avoided, the safety is greatly improved, the length of the needle tube of the anti-needling needle is further shortened, and the probability of occurrence of bending deformation of the needle tube is fundamentally reduced.
Description
Technical Field
The invention relates to an anti-needling assembly of a safe indwelling needle and the safe indwelling needle, and belongs to the field of medical devices.
Background
The indwelling needle is also called a vein trocar, can reduce pain of the child patient caused by repeated venipuncture and fear of injection, lighten the dysphoria emotion of parents, facilitate clinical medication and lighten the workload of clinical nurses. The indwelling needle is easy and convenient to operate, is suitable for puncture of any part, can be widely applied clinically, and comprises a catheter/sleeve which is reserved in a blood vessel and a puncture guiding needle core.
The needle point of the common indwelling needle is exposed after the needle tube component of the puncture guide is pulled out from the catheter component, so that a medical staff performing the operation can be pricked by the needle point, and the needle point stained with blood of a patient can be polluted. Meanwhile, the abandoned needle is exposed in the environment, so that environmental pollution is easy to cause, and potential safety hazards exist; in this context, needle-stick-type indwelling needles are known.
CN2016102829193 discloses a disposable puncture-proof venous indwelling needle, which comprises a puncture needle and a puncture-proof safety device for accommodating the needle tip of the puncture needle and preventing the needle tip from being exposed, wherein the puncture-proof mounting device comprises a puncture-proof protective sleeve and a puncture-proof blocking piece arranged inside the puncture-proof protective sleeve and used for preventing the needle tip of the puncture needle from extending out from the rear end of the puncture-proof protective sleeve. Although the needle puncture can be prevented to a certain extent, the needle point can be prevented from being punctured from the front end of the protective sleeve, the length of the whole needle puncture preventing remaining needle is correspondingly increased due to the structural design that an elastic force arm and a limiting part are clamped between the needle puncture preventing clamp and the needle blocking sheet, and the like, the needle tube is correspondingly lengthened, the risk of bending deformation of the needle tube is increased, and meanwhile, after the needle puncture preventing remaining needle is used for a period of time, the needle point still can extend from the front end of the protective sleeve due to the fact that the elastic force arm is weakened or fails, and the risk of needle point puncture exists.
CN201710295558.0 discloses a needle-prick-preventing retaining needle, which comprises a catheter seat, a needle seat slidably sleeved in the catheter seat, a needle tube installed on the needle seat and penetrated by the catheter seat, and a protecting mechanism arranged between the catheter seat and the needle seat, wherein the protecting mechanism consists of a protecting seat and a protecting sheet installed on the protecting seat, the protecting seat is provided with a protecting seat body through which the needle tube can penetrate, a containing cavity for containing part of the needle tube is formed in the protecting seat body, the protecting sheet is provided with a protecting sheet main body, one end of the protecting sheet main body is formed with a baffle sheet contained in the containing cavity, a supporting structure is arranged in the containing cavity, and the supporting structure applies a supporting force with opposite direction to the low pressure applied by the baffle sheet to the needle tube, so that the needle tube is not easy to deform under the pressure of the baffle sheet. Although the needle tube is prevented from deforming to a certain extent by the structural design, the length of the whole anti-needling indwelling needle is correspondingly increased, the manufacturing cost is increased, the waste of materials is caused, the operation burden of medical staff is increased due to the extension of a puncture path, and the risk of stabbing caused by the fact that the needle point extends out of the front end of the protection seat body still exists.
Disclosure of Invention
In view of the shortcomings of the prior art, the invention aims to provide a safe indwelling needle anti-needling assembly and a safe indwelling needle, which are safer, lower in cost and more reasonable in structural design on the basis of keeping the functions of the existing indwelling needle.
In order to achieve the above purpose, one of the technical schemes adopted by the invention is as follows: the anti-needling assembly of the safe indwelling needle comprises a protective shell and a protective sheet which is arranged in the protective shell and used for preventing a needle point of the puncture needle from extending out of the protective shell, wherein a front end through hole and a rear end through hole for the puncture needle tube to pass through are respectively formed at the front end and the rear end of the protective shell; a baffle part is formed on the protective sheet near the front end and always generates an elastic force which points to the direction of the puncture needle, and a gap between the elastic plug part and the baffle part forms a front end perforation for the puncture needle to pass through; the rear end of the protective sheet is provided with a rear end perforation which is used for the needle tube of the puncture needle to pass through but preventing the needle point of the puncture needle from passing through.
Preferably, the protective casing includes a casing body with an opening at the bottom, and a cover for sealing the opening at the bottom of the casing body, wherein one end of the cover is connected with the casing body and the cover can rotate relative to the casing body, and the other end of the cover is fastened with the casing body.
The second technical scheme adopted by the invention is to provide the safe detaining needle comprising the anti-needling component of the safe detaining needle, and the safe detaining needle also comprises a puncture needle, a catheter seat and a needle seat, wherein the needle seat can be sleeved on the catheter seat in a sliding way, the puncture needle is fixed on the needle seat, the anti-needling component is accommodated between the catheter seat and the needle seat, and the safe detaining needle is characterized in that a blocking part protruding out of the outer circumferential surface of the puncture needle tube is formed on the puncture needle near the needle point of the puncture needle, the outer diameter of the blocking part is larger than the perforation aperture at the rear end of the protective sheet and the through hole aperture at the rear end of the protective shell, and an accommodating groove for accommodating the elastic blocking head when the elastic blocking head is pressed by the puncture needle tube is formed on the side wall of the catheter seat and near the end position of the needle seat.
Compared with the prior art, the invention has the outstanding effects that: 1. through designs such as the elastic blocking head part, the blocking piece part and the like, when the puncture needle is retracted into the protective piece, the elastic blocking head is used for releasing compression from the front end of the protective piece, the elastic blocking head is used for rebounding to block the front end through hole of the protective shell, the blocking piece is used for releasing compression, the elastic blocking head is used for rebounding to block the puncture needle tip, the puncture needle tip is prevented from penetrating out of the protective piece from the front end of the protective piece, the rear end perforation is used for preventing the needle tip from being withdrawn from the protective piece from further, if the rear end perforation of the protective piece is deformed, the situation is not required, because the rear end through hole on the protective shell is used for preventing the puncture needle tip from penetrating out, the front end and the rear end of the puncture prevention assembly are doubly protected, the puncture risk caused by the fact that the needle tip stretches out of the protective shell is avoided, and the safety is greatly improved;
2. the length of the needle-pricking prevention component is shortened through compact designs such as the elastic blocking head part, the blocking piece part and the like, so that the length of the needle tube of the puncture prevention needle is shortened, and the occurrence probability of bending deformation of the needle tube is fundamentally reduced;
3. the assembly is simpler, the manufacturing cost is lower, and the materials are saved;
4. the assembly is convenient, and the local replacement and the maintenance are also convenient.
Drawings
FIG. 1 is a sectional view showing the structure of the safety indwelling needle according to the present invention in which the puncture needle is completely inserted into the indwelling catheter
FIG. 2 is a sectional view showing the structure of the safety indwelling needle according to the present invention when the puncture needle is retracted into the protecting sheet
FIG. 3 is a schematic view of the stab-resistant assembly of the present invention
FIG. 4 is a schematic structural view of a protective sheet according to the present invention
FIG. 5 is a schematic view of the protective housing of the present invention
FIG. 6 is a state diagram of the invention after the protective sheet is assembled into the protective housing and ready for capping
FIG. 7 is a schematic view showing the structure of the puncture needle according to the present invention
Wherein, 1, catheter holder, 1.1, holding tank, 1.2, indwelling catheter, 2, needle file, 3, pjncture needle, 3.1, needle point, 3.2, needle tubing, 3.3, blocking portion, 4, anti-stabbing subassembly, 4.1, protective housing, 4.11, front end through-hole, 4.12, rear end through-hole, 4.13, housing main body, 4.14, closing cap, 4.2, protective sheet, 4.21, elasticity blocking head portion, 4.22, blocking sheet portion, 4.23, front end perforation, 4.24, rear end perforation.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. It will be clear that the invention is not limited thereby to the described embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention. It is noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "left", "right", "front", "rear" and the like are used herein for illustrative purposes only, and the following examples are not given to model numbers, dimensions, conditions, as in conventional methods, or as in the commercial description.
Example 1
As shown in fig. 1-7, the safe indwelling needle of the invention comprises an anti-needling component 4, a puncture needle 3, a catheter seat 1 and a needle seat 2, wherein the needle seat 2 is sleeved on the catheter seat 1 in a sliding way, the puncture needle 3 is fixed on the needle seat 1, the anti-needling component 4 is accommodated between the catheter seat 1 and the needle seat 2, a blocking part 3.3 protruding out of the peripheral surface of a puncture needle tube 3.2 is formed on the puncture needle 3 near the puncture needle tip 3.1, the outer diameter of the blocking part 3.3 is larger than the aperture of a perforation 4.24 at the rear end of a protective sheet 4.2 and the aperture of a through hole 4.12 at the rear end of a protective shell 4.1, an accommodating groove 1.1 for accommodating an elastic plug part 4.21 when the elastic plug part 4.21 is pressed by the puncture needle tube 3.2 is formed on the side wall of the catheter seat 1 near the end position of the needle seat 2, and the front end of the catheter seat 1 is the indwelling catheter 1.2.
The anti-needling component 4 of the safe indwelling needle comprises a protective shell 4.1 and a protective sheet 4.2 which is arranged in the protective shell 4.1 and used for preventing a needle point 3.1 of a puncture needle 3 from extending out of the protective shell 4.1, wherein a front end through hole 4.11 and a rear end through hole 4.12 for a puncture needle tube to pass through are respectively formed at the front end and the rear end of the protective shell 4.1, an elastic plug part 4.21 is formed at the front end of the protective sheet 4.2, and the elastic plug part 4.21 always generates an elastic force which vertically points to the direction of the puncture needle 3, and the elastic plug part 4.21 just plugs the front end through hole 4.11 of the protective shell 4.1 after the compression of the puncture needle tube 3.2 is released; a baffle part 4.22 is formed on the protective sheet 4.2 near the front end, and the baffle part 4.22 also always generates an elastic force pointing to the direction of the puncture needle 3, and a gap between the elastic plug part 4.21 and the baffle part 4.22 forms a front end perforation 4.23 for the puncture needle 3 to pass through; the rear end of the protective sheet 4.2 is provided with a rear end perforation 4.24 which is used for the needle tube 3.2 of the puncture needle 3 to pass through but prevents the needle tip 3.1 of the puncture needle 3 from passing through at a position corresponding to the rear end through hole 4.12.
Example two
The procedure was as in example one, except for the following differences:
for convenience of assembly, the protective case 4.1 of the present embodiment is designed as a split: namely, the protective casing 4.1 comprises a casing main body 4.13 with an opening at the bottom and a sealing cover 4.14 for sealing the opening at the bottom of the casing main body 4.13, one end of the sealing cover 4.14 is connected with the casing main body 4.13, the sealing cover 4.14 can rotate relative to the casing main body 4.13, and the other end of the sealing cover 4.14 is buckled with the casing main body 1.43.
The protective sheet of the invention is an iron sheet or a stainless steel sheet.
Claims (2)
1. The utility model provides a safe remaining needle including preventing needle subassembly, pjncture needle, catheter holder, needle file, wherein the needle file slidable sleeve is in the catheter holder, the pjncture needle is fixed on the needle file, prevent needle subassembly and hold between catheter holder and needle file, the pjncture needle is last to be close to pjncture needle point department shaping has the blocking part of protruding puncture needle tubing peripheral surface, the external diameter of blocking part is greater than protection piece rear end perforation aperture, protection shell rear end through-hole aperture, open on the lateral wall of catheter holder and be close to the tip position department of needle file has one to be used for holding the holding tank of elasticity stifled head when elasticity stifled head is oppressed by the pjncture needle tubing; the anti-needling assembly comprises a protective shell and a protective sheet which is arranged in the protective shell and used for preventing a needle point of a puncture needle from extending out of the protective shell, wherein the protective sheet is an iron sheet or a stainless steel sheet, and front and rear ends of the protective shell are respectively provided with a front end through hole and a rear end through hole for a puncture needle tube to pass through; a baffle part is formed on the protective sheet near the front end and always generates an elastic force which points to the direction of the puncture needle, and a gap between the elastic plug part and the baffle part forms a front end perforation for the puncture needle to pass through; the rear end of the protective sheet is provided with a rear end perforation which is used for the needle tube of the puncture needle to pass through but preventing the needle point of the puncture needle from passing through.
2. The needle of claim 1, wherein the protective housing comprises a housing body with an opening at the bottom and a cover for closing the opening at the bottom of the housing body, one end of the cover is connected to the housing body and the cover is rotatable relative to the housing body, and the other end of the cover is fastened to the housing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350745.0A CN107929874B (en) | 2017-12-15 | 2017-12-15 | Needle-punching prevention assembly of safety indwelling needle and safety indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350745.0A CN107929874B (en) | 2017-12-15 | 2017-12-15 | Needle-punching prevention assembly of safety indwelling needle and safety indwelling needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107929874A CN107929874A (en) | 2018-04-20 |
| CN107929874B true CN107929874B (en) | 2023-04-28 |
Family
ID=61944370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711350745.0A Active CN107929874B (en) | 2017-12-15 | 2017-12-15 | Needle-punching prevention assembly of safety indwelling needle and safety indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107929874B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109248354B (en) * | 2018-09-25 | 2023-12-15 | 重庆医药集团威逊医疗科技有限公司 | Needle-stick injury prevention safety indwelling needle |
| CN113069637B (en) * | 2021-03-31 | 2025-06-06 | 北京光耀世纪医疗科技有限公司 | A needle-puncture-proof fluid delivery device |
| CN113855921A (en) * | 2021-10-28 | 2021-12-31 | 阳普医疗（湖南）有限公司 | Remaining needle |
| CN116807579B (en) * | 2023-08-31 | 2023-11-14 | 苏州林华医疗器械股份有限公司 | Puncture preventing device for medical puncture device and medical infusion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202078634U (en) * | 2011-05-26 | 2011-12-21 | 张秋 | Safety remaining needle |
| CN103071204A (en) * | 2013-01-29 | 2013-05-01 | 苏州林华医疗器械有限公司 | Safety type detaining needle with disposable use |
| CN103209726A (en) * | 2010-09-23 | 2013-07-17 | 威格米德公司 | Needle tip shielding device |
| CN103768682A (en) * | 2014-01-27 | 2014-05-07 | 王亚娟 | Safe remaining needle |
| WO2016163939A1 (en) * | 2015-04-09 | 2016-10-13 | Vigmed Ab | Needle tip shielding device and catheter hub therefore |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20102760U1 (en) * | 2001-02-16 | 2001-05-03 | B. Braun Melsungen Ag, 34212 Melsungen | Protective device for an injection needle with a curved tip |
| US7291130B2 (en) * | 2003-04-08 | 2007-11-06 | Smiths Medical Asd, Inc. | Safety needle and catheter assembly |
| JP4921779B2 (en) * | 2005-11-28 | 2012-04-25 | 日本コヴィディエン株式会社 | Indwelling needle |
| US10918837B2 (en) * | 2013-12-04 | 2021-02-16 | B. Braun Melsungen Ag | Safety needle assemblies and related methods |
-
2017
- 2017-12-15 CN CN201711350745.0A patent/CN107929874B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209726A (en) * | 2010-09-23 | 2013-07-17 | 威格米德公司 | Needle tip shielding device |
| CN202078634U (en) * | 2011-05-26 | 2011-12-21 | 张秋 | Safety remaining needle |
| CN103071204A (en) * | 2013-01-29 | 2013-05-01 | 苏州林华医疗器械有限公司 | Safety type detaining needle with disposable use |
| CN103768682A (en) * | 2014-01-27 | 2014-05-07 | 王亚娟 | Safe remaining needle |
| WO2016163939A1 (en) * | 2015-04-09 | 2016-10-13 | Vigmed Ab | Needle tip shielding device and catheter hub therefore |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107929874A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107929874B (en) | Needle-punching prevention assembly of safety indwelling needle and safety indwelling needle | |
| US20140303561A1 (en) | Safe detained needle | |
| RU2572273C2 (en) | Needle-protecting device for medical instruments | |
| CN102836479B (en) | Security-type venous indwelling needle | |
| CN103301528A (en) | Safe intravenous infusion indwelling needle component | |
| US5879331A (en) | Medical devices having needle retraction and needle biasing mechanism | |
| CN110585519A (en) | Atraumatic needle and infusion device | |
| CN208770562U (en) | The anti-acupuncture group part and safety indwelling needle of safety indwelling needle | |
| CN103071204A (en) | Safety type detaining needle with disposable use | |
| CN203060461U (en) | High pressure resistant and safe remaining needle | |
| CN209916919U (en) | Indwelling needle | |
| CN211383156U (en) | Withstand voltage type prevents that acupuncture stays needle | |
| CN108744146B (en) | Needle-stick-preventing remaining needle | |
| CN209060192U (en) | A kind of new type of safe remaining needle | |
| CN102989058A (en) | Needle point shielding type anti-backflow venous indwelling needle | |
| WO2018096549A1 (en) | Intravenous catheter with a self-activating mechanism for preventing back-flow of blood | |
| CN116899047A (en) | Remaining needle | |
| CN204734805U (en) | Needle is kept somewhere to vein with safeguard function | |
| CN106474593A (en) | A kind of needle automatic retracting formula safe intravenous infusion needle | |
| CN211068441U (en) | Indwelling needle with safety device | |
| CN112155564A (en) | Needle protection structure, protection method and needle device | |
| CN209933679U (en) | Protective sleeve for disposable needle and needle with same | |
| CN209253816U (en) | A kind of anti-safety of acupuncture type remaining needle | |
| CN108744142B (en) | Anti-needling safety indwelling needle | |
| CN202822325U (en) | Secure venous indwelling needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 415000 No.8 Industrial Avenue, economic development zone, Li County, Changde City, Hunan Province Applicant after: Robust Ping'an medical technology (Hunan) Co.,Ltd. Address before: 415000 No.8 Industrial Avenue, economic development zone, Li County, Changde City, Hunan Province Applicant before: HUNAN PINGAN MEDICAL DEVICES TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |