CN103830005B - Pen-holding type dropping liquid controller - Google Patents
Pen-holding type dropping liquid controller Download PDFInfo
- Publication number
- CN103830005B CN103830005B CN201210483502.5A CN201210483502A CN103830005B CN 103830005 B CN103830005 B CN 103830005B CN 201210483502 A CN201210483502 A CN 201210483502A CN 103830005 B CN103830005 B CN 103830005B
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- Prior art keywords
- tube
- transfusion
- holding rod
- tabletting
- flow
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 208000031481 Pathologic Constriction Diseases 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 210000001215 vagina Anatomy 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 210000004556 brain Anatomy 0.000 abstract description 3
- 238000002406 microsurgery Methods 0.000 abstract description 3
- 210000003811 finger Anatomy 0.000 description 8
- 210000005224 forefinger Anatomy 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 210000003813 thumb Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 210000004247 hand Anatomy 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000001990 intravenous administration Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 241000282376 Panthera tigris Species 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 208000037816 tissue injury Diseases 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Pen-holding type dropping liquid controller belongs to medical apparatus and instruments; The present invention includes syringe needle, tube for transfusion, flow-control handwheel, holding rod and adjustment tabletting; Have guide rail, handwheel axis hole and tube for transfusion passage in holding rod, tube for transfusion passage leading portion has a slope, tube for transfusion passage have Ka Keng foremost; Tube for transfusion is connected with syringe needle cap bag, and cap bag is blocked by Ka Keng, and tube for transfusion front portion is laid on the slope; Flow-control handwheel has wheel disc, gear and rotating shaft; Rotating shaft penetrates in the handwheel axis hole in holding rod, and a wheel disc part protrudes from holding rod surface; Regulate tabletting to have tooth bar, the sliding wing and briquetting, the sliding wing embeds in the guide rail in holding rod, and rack and pinion engages, and promotes to regulate tabletting square translation on the slope during flow-control hand wheel rotating, thus changes the degree of depth of briquetting compressing tube for transfusion.The present invention adopts writing posture to carry out dropping liquid operation, allow doctor at work more convenient, flow-control is more handy; The present invention is suitable for using in the microsurgerys such as otology or brain section.
Description
Technical field
The invention belongs to medical apparatus and instruments, particularly a kind of dropping liquid controls utensil.
Background technology
Otology or brain section etc. need to use in microscopical microsurgery, usually because the needs of electric drill mill bone, to drip to bit operation district in operation, with a large amount of bones bits preventing from producing in abrasive drilling high-speed rotation as the sawdust " stirring up a cloud of dust ", this not only can affect surgical field of view, the facial area of doctor that also can pollute microscope camera lens and bend over one's desk working, has the infiltration of water liquid just can prevent bone from considering to be worth doing and flies upward everywhere; In addition because the abrasive drilling of high speed rotating can produce more heat, by its when abrasive drilling and bone contact can because of friction heat-dissipating, at this moment just need to drip, come, to drill bit cooling, to prevent because hot-spot causes tissue injury with this.
The how direct employing intravenous of apparatus of control water drop speed conventional clinically at present replaces, and intravenous assembly has a pulley, and the cross section being carried out regulating transfusion pipe by the tightness of adjustment pulley compressing tube for transfusion reaches the object changing and drip speed.Product disadvantage is more as an alternative to adopt infusion tube set: one be the rotating shaft of its pulley is not fixing, make pulley not only can translation but also rotatable, easily cause adjust drip speed time otherwise a bit water all can drip out, violent wind is a water column out, usually needs repeatedly to grope to find optimum speed under the microscope half a day.Two is that the fast switch that drips of tube for transfusion is not fixed with the part that is connected of syringe needle, is form with flexible pipe to be flexible coupling between the two, holds the position of uncontrollable syringe needle during droplet fast switch; In practical operation, adjust when dripping speed and usually need two handss to operate: a hands is responsible for syringe needle to be fixed on microscope operative field, another hands is responsible for mobile pulley to adjust dripping speed; When speed is dripped in adjustment, syringe needle usually can disappear in field of microscope like this, and doctor has to eyes to leave microscope, again under direct-view, syringe needle is put into field of microscope district; Or in order to find pulley, eyes also must be removed searching from microscopical eyepiece by doctor, and such repeatable operation wastes a large amount of operating times and energy.Three is point only to hold needle component, and volume is too small, requires higher to the muscle of finger position, especially microscope usually operating time of performing the operation is longer, easily cause the fatigue of doctor's hand, cause the error on other accurate operations in art, thus add operation risk.So far, domestic market is not also specifically designed in microscopy the surgical component controlling water drop speed.
Summary of the invention
The object of this invention is to provide a kind of can the pen-holding type dropping liquid controller of steady and accurately adjust flux, the writing mode instrument that operator knows with people, only operates with thumb, forefinger and middle finger, uses convenient; And simple structure cost of the present invention is very low, can make disposable medical instrument.
The present invention includes syringe needle, tube for transfusion and flow-control hands wheel; It also has holding rod and regulates tabletting; Holding rod is column, has guide rail and handwheel axis hole in holding rod; Have the tube for transfusion passage penetrating into holding rod front and rear end in holding rod, tube for transfusion passage leading portion has the slope that favours guide rail bearing of trend, tube for transfusion passage have Ka Keng foremost; Tube for transfusion is flexible pipe, and its front end is connected with the cap bag of syringe needle; Cap bag is blocked by Ka Keng, and the front portion of tube for transfusion is laid on the slope, and the rear portion of tube for transfusion is stretched out from holding rod rear end face; Flow-control handwheel has concentric wheel disc, gear and rotating shaft; Rotating shaft penetrates in the handwheel axis hole in holding rod, and a part for wheel disc protrudes from holding rod surface; Regulate tabletting top to have tooth bar, regulate the side of tabletting to have the sliding wing parallel with tooth bar, regulate the front end of tabletting to have briquetting, the sliding wing embeds in the guide rail of holding rod; Regulate the tooth bar of tabletting and the gears meshing of flow-control handwheel, promote during flow-control hand wheel rotating to regulate tabletting square translation on the slope, thus change the degree of depth of briquetting compressing tube for transfusion.
As a further improvement on the present invention, flow-control handwheel has the gear that a wheel disc and two are positioned at wheel disc both sides, and the diameter of gear is less than the diameter of wheel disc; Regulate tabletting top to have two tooth bars be parallel to each other, two tooth bars engage respectively with corresponding two gears; Have two symmetrical guide rails in holding rod, regulate the left and right side of tabletting to have the sliding wing, two sliding wings embed in two guide rails in left and right respectively.
The present invention realizes precise controlling by the handwheel/gear reduction of reducing and rack gear, change into from the barrel shift of prior art or horizontal sliding displacement the fixed-axis rotation determined regulate dripping fast regulating wheel simultaneously, the finger participating in regulating only need stir flow-control handwheel in minimum actuating range, greatly reduces shake during operation; Syringe needle is fixed on dropping liquid controller front end, the integration of both realizations by the present invention simultaneously, so just can realize regulating syringe needle when dripping speed still to can be controlled in field of microscope and can not run chaotically.By ergonomic designs, this drop speed controller is designed to the lip pencil that can simply hold, and specific holding area can be set for thumb, forefinger and middle finger further, with handled easily, and reduce hand fatigue.
Only one hand is used: grip holding rod front end with thumb and middle finger, the finger belly of forefinger is contacted flow-control handwheel, be held at the rear portion of holding rod on the tiger's jaw between thumb and forefinger when using the present invention to carry out dropping liquid operation; The liquid droping speed of meticulous adjustment syringe needle is got final product with forefinger rubbing flow-control handwheel.
The present invention adopts writing posture to carry out dropping liquid operation, and the design of product can adapt to the physiological characteristics of people well, allow doctor at work more convenient, flow-control is more handy.
The present invention is suitable for using in the microsurgerys such as otology or brain section.
Accompanying drawing explanation
Fig. 1 is the outside drawing of the embodiment of the present invention;
Fig. 2 is the schematic diagram of embodiment syringe needle;
Fig. 3 and Fig. 4 is the schematic diagram of embodiment flow-control handwheel;
Fig. 5 is the partial sectional schematic diagram of embodiment holding rod;
Fig. 6 is that the A-A of Fig. 5 is to cut-away illustration;
Fig. 7 and Fig. 8 is the schematic diagram that embodiment regulates tabletting;
Structural representation when Fig. 9 is embodiment maximum stream flow;
Structural representation when Figure 10 is embodiment minimum discharge;
Figure 11 is that the B-B of Figure 10 is to cut-away illustration;
Figure 12 is that the C-C of Figure 10 is to cut-away illustration;
Figure 13 is the using state schematic diagram of embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
See Fig. 1, the present invention is made up of parts such as syringe needle 1, tube for transfusion 2, flow-control handwheel 3 and holding rods 4.
See Fig. 2, syringe needle of the present invention is medical needle, and syringe needle is with a cap bag 101.
Flow-control handwheel plastics of the present invention are made.Flow-control handwheel has concentric wheel disc, gear and rotating shaft.See Fig. 3, Fig. 4, in an embodiment, flow-control handwheel has the gear 302 that a wheel disc 301 and two are positioned at wheel disc 301 both sides, and the diameter of gear 302 is less than the diameter of wheel disc 301; Rotating shaft 303 is protruded from the center of two gears 302 to both sides.
Adjustment tabletting of the present invention is driven by flow-control handwheel, regulates tabletting top to have tooth bar, regulates the side of tabletting to have the sliding wing parallel with tooth bar, regulates the front end of tabletting to have briquetting.See Fig. 7 and Fig. 8, two tooth bars be parallel to each other 501 are arranged at the adjustment tabletting top of the present embodiment, regulate the left and right side of tabletting to have the sliding wing 502; Briquetting 503 is positioned at the below regulating tabletting front end.
Holding rod of the present invention is column, has guide rail, handwheel axis hole and tube for transfusion passage in holding rod; Tube for transfusion passage penetrates into holding rod front end face and rear end face, and tube for transfusion passage leading portion has the slope that favours guide rail bearing of trend, tube for transfusion passage have Ka Keng foremost; Tube for transfusion passage there is the kerve of arc.See Fig. 5 and Fig. 6, the holding rod of the present embodiment is cylindrical, has two symmetrical guide rails, 401, two guide rails 401 all axially parallel with holding rod in holding rod; Handwheel axis hole 404 also has two, and they are two counterbores be positioned at above two guide rails 401; The back segment 411 of tube for transfusion passage is flat segments, then starts to be inclined upwardly to form slope 402, the end on slope 402 and tube for transfusion passage have a card hole 403 foremost; Tube for transfusion passage has the kerve 407 of arc, above the kerve 407 of tube for transfusion passage back segment 411, have the inverted draw cut 410 corresponding to kerve 407, the part beyond inverted draw cut 410 and tube for transfusion passage back segment 411(and slope) kerve 407 sectional shape complementary become circular channel.
See Fig. 9-Figure 12, tube for transfusion 2 is flexible pipes, and its front end is connected with the cap bag 101 of syringe needle 1; Cap bag 101 is blocked by card hole 403 and syringe needle and holding rod is fixed as one, on the kerve 407 that the front portion of tube for transfusion 2 is laid on slope 402, the scope that kerve 407 wherein on slope contacts with tube for transfusion 2 is not more than 1/4th of tube for transfusion 2 outside diameter hoop length, leaves greater room to the deformation of tube for transfusion; The rear portion of tube for transfusion 2 is stretched out from holding rod 4 rear end face and is connected to supplying bottle; Tube for transfusion passage back segment inverted draw cut 410 and kerve 407 surround the back segment of tube for transfusion 2 jointly, play fixation to tube for transfusion.
The rotating shaft 303 of flow-control handwheel penetrates in the handwheel axis hole 404 in holding rod 4, and a part for wheel disc 301 protrudes from holding rod 4 surface; Two tooth bars 501 of tabletting 5, two gears 302 corresponding with on flow-control handwheel are regulated to engage respectively; About two sliding wings 502 embed in holding rod 4 respectively in two guide rails 401.Promote during flow-control hand wheel rotating to regulate tabletting 5 square translation on the slope, thus change the degree of depth that tube for transfusion 2 oppressed by briquetting 503.
Regulate tabletting 5 to be driven into rear extreme position by flow-control handwheel in Fig. 9, briquetting 503 does not cause compressing to tube for transfusion, and tube for transfusion has maximum caliber, and the flow of now syringe needle output is maximum.Regulate tabletting 5 slippage to the left along with flow-control handwheel turns clockwise to drive, briquetting 503 starts to increase the compressing to tube for transfusion gradually, and the cross section of tube for transfusion diminishes gradually, and the flow that syringe needle exports diminishes; In the state shown in Figure 10, briquetting 503 cuts out tube for transfusion 2 completely, blocks syringe needle and exports.
Again see Fig. 5, more firm and not easily slippage when gripping to make this product, there is the first chase 408 the cylinder front end of holding rod, and there is the second chase 409 the cylinder rear end of holding rod.
In order to increase, friction is firm to be gripped, and is shaped with friction stricture of vagina at the circumferential surface of holding rod.For ease of rubbing, the wheel disc excircle of flow-control handwheel is also shaped with friction stricture of vagina.
See Figure 13, carry out the first chase gripping holding rod front end when dropping liquid operates with the thumb of left/right hands and middle finger, the finger belly of forefinger is contacted flow-control handwheel, holding rod rear portion second chase is held on the tiger's jaw between thumb and forefinger; The liquid droping speed of meticulous adjustment syringe needle is got final product with forefinger rubbing flow-control handwheel.Diameter due to flow-control handwheel wheel disc is greater than the diameter of gear, so the linear velocity of wheel disc is greater than the linear velocity of tooth bar.Like this, compared with a fast Control Component of traditional intravenous, when the gradient on slope is identical with length of grade, adjustment of the present invention comes meticulousr.
Above embodiment is unique configuration of the present invention not.Because each part its shape on the basis of basic function reaching application claims can make limited adjustment; Such as holding rod except make cylindrical except, can also cylindroid, prism etc. be made; Such as holding rod can be put together by two semi-cylinder housings for manufacturing process and consideration easy to use again, between two housings, rely on adapter to be fixed as one; Further, being used for the adapter of connection two housings has two covers, every set of connectors comprises one and swings button bar and a locking plate, the swing button bar of every set of connectors and locking plate are arranged on the front/rear end of two housings respectively, so not only easy to manufacture but also after finishing treatment, two housings are separated and just can abandon disposable tube for transfusion and syringe needle.Again such as, holding rod stretches out place at the tube for transfusion of cylinder rear end can add a flexible connection head again, thus holding rod main body is separated with supplying bottle.
Claims (8)
1. a pen-holding type dropping liquid controller, comprises syringe needle (1), tube for transfusion (2) and flow-control handwheel (3); It is characterized in that: it also has holding rod (4) and regulates tabletting (5);
Described holding rod (4), in column, has guide rail (401) and handwheel axis hole (404) in holding rod (4); Have the tube for transfusion passage penetrating into holding rod (4) front and rear end in holding rod (4), tube for transfusion passage leading portion has the slope (402) that favours guide rail (401) bearing of trend, tube for transfusion passage have Ka Keng (403) foremost;
Described tube for transfusion (2) is flexible pipe, and its front end is connected with the cap bag (101) of described syringe needle (1); Cap bag (101) is blocked by Ka Keng (403), and the front portion of tube for transfusion (2) is laid on slope (402), and the rear portion of tube for transfusion (2) is stretched out from holding rod (4) rear end face;
Described flow-control handwheel (3) has concentric wheel disc (301), gear (302) and rotating shaft (303); Rotating shaft (303) penetrates in the handwheel axis hole (404) in holding rod (4), and a part for wheel disc (301) protrudes from holding rod (4) surface;
Tooth bar (501) is arranged at described adjustment tabletting (5) top, regulates the side of tabletting (5) to have the sliding wing (502) parallel with tooth bar (501), regulates the front end of tabletting (5) to have briquetting (503); The sliding wing (502) embeds in the guide rail (401) of holding rod (4), tooth bar (501) engages with the gear (302) of flow-control handwheel (3), promote when flow-control handwheel (3) rotates to regulate tabletting (5) in slope (402) top translation, thus change the degree of depth of briquetting (503) compressing tube for transfusion (2).
2. according to pen-holding type dropping liquid controller according to claim 1, it is characterized in that: described flow-control handwheel (3) has the gear (302) that a wheel disc (301) and two are positioned at wheel disc (301) both sides, and the diameter of described gear (302) is less than the diameter of described wheel disc (301); Two tooth bars be parallel to each other (501) are arranged at described adjustment tabletting (5) top, and two tooth bars (501) are engaged respectively with two gears (302); Have two symmetrical guide rails (401) in holding rod (4), regulate the left and right side of tabletting (5) to have the sliding wing (502), two sliding wings (502) embed in two guide rails (401) in left and right respectively.
3. according to pen-holding type dropping liquid controller according to claim 1, it is characterized in that: the kerve (407) described tube for transfusion passage having arc; Described tube for transfusion (2) is placed on kerve (407), and the scope that the kerve (407) wherein on slope (402) contacts with tube for transfusion (2) is not more than 1/4th of tube for transfusion (2) outside diameter hoop length.
4. according to pen-holding type dropping liquid controller according to claim 3, it is characterized in that: there is the corresponding inverted draw cut (410) with kerve (407) kerve (407) top of described tube for transfusion passage back segment, and inverted draw cut (410) and kerve (407) surround the back segment of tube for transfusion (2) jointly.
5. according to pen-holding type dropping liquid controller according to claim 1, it is characterized in that: described holding rod (4) is cylindrical, holding rod (4) is put together by two semi-cylinder housings, relies on adapter to be fixed as one between two housings.
6. according to pen-holding type dropping liquid controller according to claim 5, it is characterized in that: described adapter has two covers, every set of connectors comprises one and swings button bar and a locking plate, and the swing button bar of every set of connectors and locking plate are arranged on the front/rear end of two housings respectively.
7. according to pen-holding type dropping liquid controller according to claim 1, it is characterized in that: there is the first chase (408) the cylinder front end of described holding rod (4), there is the second chase (409) the cylinder rear end of holding rod (4).
8. according to pen-holding type dropping liquid controller according to claim 1, it is characterized in that: the circumferential surface of described holding rod (4) has friction stricture of vagina that wheel disc (301) excircle of described flow-control handwheel has friction stricture of vagina.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483502.5A CN103830005B (en) | 2012-11-26 | 2012-11-26 | Pen-holding type dropping liquid controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483502.5A CN103830005B (en) | 2012-11-26 | 2012-11-26 | Pen-holding type dropping liquid controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103830005A CN103830005A (en) | 2014-06-04 |
| CN103830005B true CN103830005B (en) | 2015-12-30 |
Family
ID=50794124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210483502.5A Expired - Fee Related CN103830005B (en) | 2012-11-26 | 2012-11-26 | Pen-holding type dropping liquid controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103830005B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12433995B2 (en) * | 2018-03-21 | 2025-10-07 | Carefusion 303, Inc. | Linearly actuated flow controller for intravenous (IV) fluid administration |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017103199A1 (en) * | 2017-02-16 | 2018-08-16 | avateramedical GmBH | HMI device for a robot-assisted surgical system |
| CN108030587A (en) * | 2017-12-07 | 2018-05-15 | 周兵经 | Eyedrops bottle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125403U (en) * | 1992-05-26 | 1992-12-23 | 李蕴麟 | Discharge controller for infusion tube |
| US6168577B1 (en) * | 1999-01-25 | 2001-01-02 | Cardiothoracic Systems, Inc. | Directed stream blower for clearing a surgical site |
| CN2892112Y (en) * | 2006-04-13 | 2007-04-25 | 汤光化 | Slidewheel type venostasis needle |
| WO2012065650A1 (en) * | 2010-11-19 | 2012-05-24 | Carefusion Corporation | Roller clamp |
| CN203029681U (en) * | 2012-11-26 | 2013-07-03 | 段七梅 | Writing type dropping liquid controller |
-
2012
- 2012-11-26 CN CN201210483502.5A patent/CN103830005B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2125403U (en) * | 1992-05-26 | 1992-12-23 | 李蕴麟 | Discharge controller for infusion tube |
| US6168577B1 (en) * | 1999-01-25 | 2001-01-02 | Cardiothoracic Systems, Inc. | Directed stream blower for clearing a surgical site |
| CN2892112Y (en) * | 2006-04-13 | 2007-04-25 | 汤光化 | Slidewheel type venostasis needle |
| WO2012065650A1 (en) * | 2010-11-19 | 2012-05-24 | Carefusion Corporation | Roller clamp |
| CN203029681U (en) * | 2012-11-26 | 2013-07-03 | 段七梅 | Writing type dropping liquid controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12433995B2 (en) * | 2018-03-21 | 2025-10-07 | Carefusion 303, Inc. | Linearly actuated flow controller for intravenous (IV) fluid administration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103830005A (en) | 2014-06-04 |
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Inventor after: Guo Qiangzhong Inventor before: Duan Qimei |
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Effective date of registration: 20151130 Address after: 510120 Guangdong city of Guangzhou province Yuexiu District Dade road Ma Street Wuyang Lane 3, Room 303 Applicant after: Guo Qiangzhong Address before: 510120 Guangdong city of Guangzhou province Yuexiu District Dade road Ma Street Wuyang Lane 3, Room 303 Applicant before: Duan Qimei |
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