CN206045102U - A kind of automated injection device with safety protection mechanism scalable dosage - Google Patents
A kind of automated injection device with safety protection mechanism scalable dosage Download PDFInfo
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- CN206045102U CN206045102U CN201620773271.5U CN201620773271U CN206045102U CN 206045102 U CN206045102 U CN 206045102U CN 201620773271 U CN201620773271 U CN 201620773271U CN 206045102 U CN206045102 U CN 206045102U
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Abstract
This utility model provides a kind of automated injection device with safety protection mechanism scalable dosage; bottle, trigger switch button, governor motion, protection mechanism are accommodated including housing, liquid medicine; housing upper end is provided with the first end cap; lower end is provided with the second end cap; through hole is equipped with the middle part of first end cap, the second end cap; screw drive cam in governor motion is connected with scale screw torque and both mutually axially can slide, and screw drive cam is connected with regulating key by the first ratchet mechanism；Scale screw rod outer wall is connected using engagement thread with the through hole of the first end cap; scale screw rod is connected with actuator by the second ratchet mechanism; actuator is connected with piston rod moment of torsion; piston rod outer wall is connected using engagement thread with the through hole in the middle part of the second end cap, and protection mechanism is used to limit the rotation of screw drive cam.Compared with prior art, automated injection device of the present utility model has simple structure, easy to adjust, safety coefficient high, easy to operate, the advantages of low manufacture cost.
Description
Technical field
This utility model is related to a kind of injection device, more particularly to it is a kind of with safety protection mechanism scalable dosage from
Dynamic injection device.
Background technology
Mainly using manually inserting needle, injection, inserting needle needs certain technical operation with when injecting to syringe in the past
Experience and hygienic requirements, in order to simplify operation, currently there are many automatic injectors, but this automatic injector are not
Possesses the function of regulating dosage, once triggering injection is switched, the uncontrollable injection dosage injected away of syringe is made in injection
The dosage that cannot ensure to inject with process, for some special occasions, it is impossible to precisely extrude required dosage, so as to cause medicine wave
Take, or even the person of being injected is damaged, such as, when injection medicament is the medicines such as growth hormone, insulin, need according to specific
Dose demand is injected；Also small part automatic injector is designed as the structure of scalable dosage, but it is this with scalable
After dosage has been adjusted, trigger switch carelessly easily can be triggered the syringe of dosage, so as to cause the medicine in liquid medicine bottle
Thing is connected the trigger mechanism extruding of piston and sprays, and causes the waste of medicine.
Utility model content
The purpose of the application there is provided a kind of automated injection device with safety protection mechanism scalable dosage, to solve
Certainly in prior art automatic injector after dosage has been adjusted, trigger switch easily touched extruding and trigger trigger switch, from
And cause the medicine being stored in medicine bottle to be extruded the defect and technical problem of ejection.
For achieving the above object, the technical solution of the utility model is：
A kind of automated injection device with safety protection mechanism scalable dosage of the present utility model, including housing, set
Put in through hole inner chamber one end of the housing and bottle, trigger switch button, governor motion, protection are accommodated with the liquid medicine with piston
Mechanism, the housing upper end are provided with the first end cap, and lower end is provided with the second end cap, is all provided with the middle part of first end cap, the second end cap
There is through hole, the governor motion is arranged in the housing, the governor motion includes regulating key, screw drive cam, carves
Degree screw rod, actuator, the screw drive cam are embedded intracavity in the through hole with the housing, and the screw drive cam is arranged
It is connected with the scale screw torque outside the scale screw rod and both mutually axially can slides, the screw drive cam
Upper end is connected with the regulating key by the first ratchet mechanism, for ordering about the screw drive cam single direction rotation；It is described
Scale screw rod outer wall is connected using engagement thread with the through hole in the middle part of first end cap, and the scale screw rod upper end is touched with described
Send out shift knob connection, the scale screw rod lower end is connected with actuator by the second ratchet mechanism, the actuator lower end and
Piston rod moment of torsion connects, and the piston rod outer wall is connected using engagement thread with the through hole in the middle part of second end cap；The guarantor
Shield mechanism is used to limit the screw drive cam rotation.
In above-mentioned technical proposal, during regulating dosage, the rotation of screw drive cam, scale screw rod are driven by regulating key
With screw drive cam synchronous rotary, arrange on the through hole of the first end cap of the external screw thread and housing of the setting of scale screw rod outer wall
Screw-internal thread fit connects, after screw drive cam rotates to an angle, protruding one section relative to the first end cap of scale screw rod
Displacement, completes regulating dosage, limits the revolution of screw drive cam by protection mechanism, effectively prevents scale screw rod rotating belt
Piston bar is turned round, it is ensured that dosage will not be caused to reduce and prevent from encountering triggering because of the revolution of screw drive cam after having adjusted dosage
After switch, medicine extruding will not be sprayed, cause to waste, improve Drug safety, the simple structure of this governor motion is adjusted
Section is easy to operate.
Further improvement is that, the protection mechanism includes safety switch, the 3rd ratchet mechanism, the 3rd ratchet mechanism
Hook tooth be arranged on the screw drive cam periphery along what the screw drive cam circumference extended, the safety open
Pass is embedded in the housing sidewall, and the dead bolt of the safety switch is extended at the ratchet flank of tooth of the 3rd ratchet mechanism,
The safety switch is rotated to make the hook tooth engagement or disengagement of the dead bolt and the 3rd ratchet mechanism.By adopting spine
Screw drive cam is limited single direction rotation, the hook tooth of ratchet mechanism and the cooperation of ratchet by the mode of wheel mechanism, makes regulator
Amount is more smooth,
Further improvement is that, the safety switch is buckled in the installing hole in the housing sidewall by hasp.Adopt
Safety switch is fixed on housing with hasp, easy accessibility.
Further improvement is that, the hook tooth of first ratchet mechanism is along setting that the screw drive cam circumference extends
It is placed on the screw drive cam upper surface, the hook tooth of second ratchet mechanism is along setting that the actuator circumference extends
Be placed on the actuator upper surface, first ratchet mechanism, the second ratchet mechanism flank of tooth incline direction it is identical.
Further improvement is that, the regulating key is set on the scale screw rod, its lower end is top with one, described
Top tip is fitted on the flank of tooth of first ratchet mechanism under external force, and the housing sidewall is provided with along the shell
The axially arranged strip through-hole of body, regulating key side wall form the salient point for extending through the strip through-hole, the tune
Extension spring is provided between section button upper end and first end cap, for the regulating key that resets.
In above-mentioned technical proposal, the hook tooth of the first ratchet mechanism is arranged on the upper surface of screw drive cam, structure
Simply, low manufacture cost, regulating key are moved up and down back and forth, order about screw drive cam single direction rotation, simple to operation, can
Finely required according to regulating dosage, the ratchet number of teeth and the flank of tooth angle of inclination of varying number is set, so as to realize fine-tuning
Dosage；Regulating key is connected with the first end cap by extension spring, when making regulating key be moved to bottom, in the effect of extension spring
Under, automatically reset to peak, using more convenient.
Further improvement is that, compression spring is provided between the actuator lower end and second end cap, for keeping
Engage with the scale screw rod lower end actuator upper end.By arranging compression spring in actuator lower end, by compressing bullet
The effect of spring, makes scale screw rod during the first end cap is stretched out in rotation be arranged on the hook tooth of actuator upper end face and set
Put the ratchet in scale screw rod lower end and be constantly in laminating shape, when trigger switch button is pressed, piston rod and scale spiral shell can be made
Bar synchronous rotary, it is identical with the dosage for being adjusted further to ensure that extruded pharmaceutical quantities, improves the dosage being extruded
Fineness.
Further improvement is that, the screw drive cam medial wall is axially arranged with guide groove along which, outside the scale screw rod
Wall forms the projection being slidably connected with the guide groove, and the guide groove is three and is uniformly distributed in the screw drive cam circle
On side face.By guide groove is arranged on the medial wall of screw drive cam, the setting of scale screw rod outer wall is slidably connected with guide groove
Projection, guide groove and the cooperation of projection, make moment of torsion transmission is formed between scale screw rod and screw drive cam, rotate in scale screw rod
When, it is raised to slide in guide groove；Arrange three guide grooves to be evenly distributed on the periphery of screw drive cam, structure letter
Single, uniform force is during regulating dosage, more smooth light.
Further improvement is that, the automated injection device also includes Tip protection mechanism, the Tip protection mechanism includes
Needle shield, protective cover return unit, the liquid medicine accommodate bottle and are fixed on the housing lower end, the bottle cover upper end by bottle cover
It is snapped in second end cap, the needle shield can be embedded at institute relative to the relative slip of the internal chamber wall of the bottle cover
State at bottle cover inner chamber lower end, the protective cover return unit is located between the needle shield and the bottle cover internal chamber wall, is used for
The needle shield is squeezed in the bottle cover under external force, orders about the needle shield from institute after release external force
State in bottle cover and stretch out.
In above-mentioned technical proposal, in the presence of needle protection covers on protective cover return unit, by syringe needle cage in its cover,
So as to reach the effect of protection syringe needle, while can prevent syringe needle from stabbing other people.
Further it is improved by, second end cap is buckled in the through hole cavity lower end of the housing.
Compared with prior art, automated injection device of the present utility model has simple structure, easy to adjust, safety coefficient
It is high, easy to operate, the advantages of low manufacture cost.
Description of the drawings
Fig. 1 has the structural representation of the automated injection device of safety protection mechanism scalable dosage for this utility model；
Fig. 2 has the generalized section of the automated injection device of safety protection mechanism scalable dosage for this utility model；
Structural representation when Fig. 3 is engaged with the hook tooth of the 3rd ratchet mechanism for safety switch in this utility model；
Fig. 4 is the structural representation when hook tooth of safety switch and the 3rd ratchet mechanism in this utility model is disengaged；
Fig. 5 is the close-up schematic view of A views in Fig. 4；
Generalized section when Fig. 6 is engaged with the hook tooth of the 3rd ratchet mechanism for safety switch in this utility model；
Structural representations of the Fig. 7 for this utility model safety switch；
The cross-sectional view that Fig. 8 is connected with actuator, the second end cap for piston rod in this utility model；
Fig. 9 is the attachment structure schematic diagram of this utility model screw drive cam and scale screw rod；
Figure 10 is the structural representation of scale screw rod in this utility model；
Figure 11 is the structural representation of Tip protection mechanism in this utility model；
In figure, 1- housings, the first end caps of 11-, the second end caps of 12-, 2- trigger switch buttons, 3- liquid medicine accommodate bottle, 31- bottles
Set, 32- pistons, 4- regulating keys, 41- salient points, 42- are top, 43- extension springs, 5- screw drive cams, 51- guide grooves, 52- the 3rd
The hook tooth of ratchet mechanism, 6- scale screw rods, 61- are raised, 62- ratchets, 7- piston rods, 71- actuators, 72- compression springs, 8-
Safety switch, 81- dead bolts, 82- non-return grooves, 9- needle shields, 91- protective cover return units.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
As shown in Figure 1 to 11, a kind of automatic note with safety protection mechanism scalable dosage that the present embodiment is provided
Injection device, including housing 1, be arranged on housing 1 through hole inner chamber one end and with piston 32 liquid medicine accommodate bottle 3, triggering open
Button 2, governor motion, protection mechanism are closed, governor motion is arranged in housing 1, and the upper end of housing 1 is provided with the first end cap 11, under
End is provided with the second end cap 12, and the second end cap card 12 is buckled in the through hole cavity lower end of housing 1, in the first end cap 11, the second end cap 12
Portion is equipped with through hole, and liquid medicine accommodates the lower end that bottle 3 is fixed on housing 1 by bottle cover 31, and the upper end of bottle cover 31 is snapped in the second end
In lid 12, governor motion includes regulating key 4, screw drive cam 5, scale screw rod 6, actuator 71, and screw drive cam 5 is embedding
Be located at intracavity in the through hole of housing 1, screw drive cam 5 be sheathed on scale screw rod 6 be connected with 6 way of torque of scale screw rod and
Both mutually can slide axially, and in the present embodiment, be axially arranged with guide groove 51, scale along which in 5 medial wall of screw drive cam
The outer wall of screw rod 6 arranges the projection 61 being slidably connected with guide groove 51, guide groove 51 and raised 61 cooperation, makes scale screw rod 6 and spiral shell
Moment of torsion transmission is formed between bar driving cam 5, when screw drive cam 5, scale screw rod 6 rotate, raised 61 in guide groove
Slide in 51, for uniform force, adjust smooth, guide groove 51 is set to three and is uniformly distributed in the circumference of screw drive cam 5
On face；The upper end of screw drive cam 5 is connected with regulating key 4 by the first ratchet mechanism, is driven by driving regulating key 4
Make 5 single direction rotation of screw drive cam；The outer wall of scale screw rod 6 is provided with external screw thread, with the first end cap 11 in the middle part of through hole on
Screw-internal thread fit connects, and 6 upper end of scale screw rod is connected with trigger switch button 2, and 6 lower end of scale screw rod passes through the second ratchet mechanism
It is connected with actuator 71, the lower end of actuator 71 is connected in the way of transmitting torque with piston rod 7, specifically, 71 sets of actuator
It is located on the square pole at 7 upper end of piston rod, to transmitting torque, the outer wall of piston rod 7 is provided with external screw thread, with the second end cap
Screw-internal thread fit connection on through hole in the middle part of in the of 12, the second ratchet mechanism specifically include the hook tooth that is arranged on actuator 71 and
The ratchet 62 being arranged on scale screw rod；Protection mechanism is used to limit the rotation of screw drive cam, and specifically, protection mechanism includes
Safety switch 8, the 3rd ratchet mechanism, the hook tooth 52 of the 3rd ratchet mechanism is along being arranged at that 5 circumference of screw drive cam extends
On the periphery of screw drive cam 5, safety switch 8 is buckled in the installing hole on 1 side wall of housing by hasp, safety switch
8 dead bolt 81 is extended at the flank of tooth of the hook tooth 52 of the 3rd ratchet mechanism, when spin safe switch 8, dead bolt 81 and the 3rd
52 engagement or disengagement of hook tooth of ratchet mechanism, in order to prevent regulating dosage process screw drive cam 5 from turning round, dead bolt 81 is tool
There are unidirectional elastically-deformable pawl structures, specifically, such as dead bolt 81 is block shape, with reference to shown in Fig. 7, when dead bolt 81 and the 3rd
When the hook tooth of ratchet mechanism is engaged, a non-return groove 82 is laterally opened up along dead bolt 81 in 81 side of dead bolt.
Optimal way of the present utility model is, what the hook tooth of the first ratchet mechanism extended along 5 circumference of screw drive cam
It is arranged on the upper surface of screw drive cam 5, the hook tooth of the second ratchet mechanism is along being arranged at that 71 circumference of actuator extends
On the upper surface of actuator 71, wherein, the first ratchet mechanism, the second ratchet mechanism flank of tooth incline direction it is identical；
Regulating key 4 is set on scale screw rod 6, and the lower end of regulating key 4 has one top 42, top 42 point
Portion can be fitted on the flank of tooth of the first ratchet mechanism under external force, and 1 side wall of housing is provided with along the axially arranged bar of housing 1
Shape through hole, 4 side wall of regulating key form the salient point 41 for extending through strip through-hole, and salient point 41 extends to the outside of housing 1, use
External force is applied on regulating key 4 with finger, in order to easy to operate, is set between the upper end of regulating key 4 and the first end cap 11
There is extension spring 43, when regulating key 4 is moved to the bottom of strip through-hole, after release external force, in the presence of extension spring, regulation is pressed
Key 4 can automatically reset to the peak of strip through-hole.
Compression spring 72 is provided between 71 lower end of actuator and the second end cap 12, for keeping the actuator upper end and institute
State the engagement of scale screw rod lower end.
Automated injection device also includes Tip protection mechanism, and the Tip protection mechanism includes needle shield 9, protective cover
Return unit 91, needle shield 9 can be embedded at the inner chamber lower end of bottle cover 31 relative to what the internal chamber wall of bottle cover 31 was slided relatively,
Protective cover return unit 91 is located between needle shield 9 and the internal chamber wall of bottle cover 31, for needle shield 9 under external force
Be squeezed in bottle cover 31, needle shield 9 is ordered about after release external force and stretched out from bottle cover 31；Wherein, protective cover return unit 91
For spring, spring one end is connected with the inwall of bottle cover 31, and the other end is connected with needle shield 9.
The operation principle of the present embodiment is as follows：
During regulating dosage, regulating key 4 is driven to move downward, top the 42 of regulating key 4 props up in screw drive cam 5
On the ratchet flank of tooth of upper end, 5 single direction rotation of screw drive cam is ordered about, scale screw rod 6 is in the presence of raised 51 with guide groove 61
What is arranged on external screw thread and the through hole of the first end cap 11 arranged with 5 synchronous rotary of screw drive cam, 6 outer wall of scale screw rod is interior
Screw thread is connected, and after screw drive cam 5 rotates to an angle, scale screw rod 6 is relative to the first end cap 11 protruding
Section is moved, and this section is displaced through the scale being arranged on 6 surface of scale screw rod and embodies, and after having adjusted dosage, safety switch 8 is revolved
Turn, engage dead bolt 81 and the hook tooth 52 of the 3rd ratchet mechanism, limit screw drive cam 5, scale screw rod 6 and turn round；
During injection, the hook tooth 52 that safety switch 8 is rotated to dead bolt 81 with the 3rd ratchet mechanism is disengaged, press triggering and open
Button 2 is closed, trigger switch button 2 orders about scale screw rod 6 and reversely rotates, retracted in the first end cap 11,6 lower end of scale screw rod passes through
Second ratchet mechanism is connected with actuator 71, drives the outer wall of 7 synchronous axial system of piston rod, piston rod 7 to arrange external screw thread and second
The screw-internal thread fit connection arranged on 12 through hole of end cap, makes piston rod 7 accommodate bottle 3 to move down relative to liquid medicine with piston 32
It is dynamic, so as to extrude the medicinal liquid of required dosage.
It should be appreciated that the regular job custom and Figure of description of the noun of locality is binding operation person and user and set
Vertical, their appearance should not affect protection domain of the present utility model.
This utility model is described in detail above in association with accompanying drawing embodiment, those skilled in the art can root
Many variations example is made to this utility model according to described above.Thus, some of embodiment details should not be constituted to this practicality
New restriction, this utility model is by the scope defined using appended claims as protection domain of the present utility model.
Claims (9)
1. a kind of automated injection device with safety protection mechanism scalable dosage, it is characterised in that including housing, be arranged on
Through hole inner chamber one end of the housing and with piston liquid medicine accommodate bottle, trigger switch button, governor motion, protection machine
Structure, the housing upper end are provided with the first end cap, and lower end is provided with the second end cap, is equipped with the middle part of first end cap, the second end cap
Through hole, the governor motion are arranged in the housing, and the governor motion includes regulating key, screw drive cam, scale
Screw rod, actuator, the screw drive cam are embedded intracavity in the through hole with the housing, and the screw drive cam sleeve is located at
It is connected with the scale screw torque outside the scale screw rod and both mutually axially can slides, on the screw drive cam
End is connected with the regulating key by the first ratchet mechanism, for ordering about the screw drive cam single direction rotation；The quarter
Degree screw rod outer wall is connected using engagement thread with the through hole in the middle part of first end cap, the scale screw rod upper end and the triggering
Shift knob connects, and the scale screw rod lower end is connected with actuator by the second ratchet mechanism, the actuator lower end and work
Stopper rod moment of torsion connects, and the piston rod outer wall is connected using engagement thread with the through hole in the middle part of second end cap；The protection
Mechanism is used to limit the screw drive cam rotation.
2. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 1, its feature exist
In the protection mechanism includes safety switch, the 3rd ratchet mechanism, and the hook tooth of the 3rd ratchet mechanism is driven along the screw rod
What moving cam circumference extended is arranged on the screw drive cam periphery, and the safety switch is embedded at the housing sidewall
On, the dead bolt of the safety switch is extended at the ratchet flank of tooth of the 3rd ratchet mechanism, rotate the safety switch to
Make the hook tooth engagement or disengagement of the dead bolt and the 3rd ratchet mechanism.
3. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 2, its feature exist
In the safety switch is buckled in the installing hole in the housing sidewall by hasp.
4. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 1, its feature exist
In the hook tooth of first ratchet mechanism is arranged at the screw drive cam along what the screw drive cam circumference extended
On upper surface, the hook tooth of second ratchet mechanism is arranged at the actuator upper surface along what the actuator circumference extended
On, first ratchet mechanism, the second ratchet mechanism flank of tooth incline direction it is identical.
5. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 4, its feature exist
In the regulating key is set on the scale screw rod, and its lower end is top with one, and the top tip is under external force
It is fitted on the flank of tooth of first ratchet mechanism, the housing sidewall is provided with logical along the axially arranged bar shaped of the housing
Hole, regulating key side wall form the salient point for extending through the strip through-hole, the regulating key upper end and described
Extension spring is provided between one end cap, for the regulating key that resets.
6. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 4, its feature exist
In, be provided with compression spring between the actuator lower end and second end cap, for keep the actuator upper end with it is described
Engage scale screw rod lower end.
7. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 1, its feature exist
In the screw drive cam medial wall is axially arranged with guide groove along which, and the scale screw rod outer wall is formed to be slided with the guide groove
The projection of dynamic connection, the guide groove are three and are uniformly distributed on the screw drive cam periphery.
8. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 1, its feature exist
In the automated injection device also includes Tip protection mechanism, and the Tip protection mechanism includes that needle shield, protective cover reset
Part, the liquid medicine accommodate bottle and are fixed on the housing lower end by bottle cover, and the bottle cover upper end is snapped in second end cap,
The needle shield can be embedded at the bottle cover inner chamber lower end relative to what the internal chamber wall of the bottle cover was slided relatively, described
Protective cover return unit is located between the needle shield and the bottle cover internal chamber wall, anti-for the syringe needle under external force
Shield is squeezed in the bottle cover, orders about the needle shield and stretch out from the bottle cover after release external force.
9. a kind of automated injection device with safety protection mechanism scalable dosage according to claim 8, its feature exist
In second end cap is buckled in the through hole cavity lower end of the housing.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620773271.5U CN206045102U (en) | 2016-07-21 | 2016-07-21 | A kind of automated injection device with safety protection mechanism scalable dosage |
| JP2017003293U JP3213066U (en) | 2016-07-21 | 2017-07-19 | Medical injection device |
| US15/655,744 US10617828B2 (en) | 2016-07-21 | 2017-07-20 | Medical injection device |
| TW106210797U TWM553638U (en) | 2016-07-21 | 2017-07-21 | Medical injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620773271.5U CN206045102U (en) | 2016-07-21 | 2016-07-21 | A kind of automated injection device with safety protection mechanism scalable dosage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206045102U true CN206045102U (en) | 2017-03-29 |
Family
ID=58376588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620773271.5U Active CN206045102U (en) | 2016-07-21 | 2016-07-21 | A kind of automated injection device with safety protection mechanism scalable dosage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206045102U (en) |
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Effective date of registration: 20171102 Address after: Shanghai City, Pudong New Area Chinese (Shanghai) free trade zone fanchun Road No. 400 Building 1 layer 3 Patentee after: Shanghai jiusen Medical Technology Co., Ltd. Address before: Taoyuan District, Taiwan, China Longtan District, 65 Ping Road, Lane No. 336 Patentee before: Weng Jiansen |
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