CN108744256A - Treat human foot corn, callosity secondary push type subcutaneous administration device - Google Patents
Treat human foot corn, callosity secondary push type subcutaneous administration device Download PDFInfo
- Publication number
- CN108744256A CN108744256A CN201810188015.3A CN201810188015A CN108744256A CN 108744256 A CN108744256 A CN 108744256A CN 201810188015 A CN201810188015 A CN 201810188015A CN 108744256 A CN108744256 A CN 108744256A
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- CN
- China
- Prior art keywords
- pawl
- sliding
- sliding pawl
- push rod
- cylinder
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- 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.)
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Classifications
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- 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
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
-
- 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
- A61M2210/00—Anatomical parts of the body
- A61M2210/04—Skin
Abstract
The invention discloses treatment human foot corns,The secondary push type subcutaneous administration device of callosity,Including cylinder,Push rod is from top to bottom disposed in cylinder,Sliding pawl set,Spring,The upper end of push rod is pierced by from the centre bore of cylinder upper surface,Push rod lower end is provided with indexing pawl,Sliding pawl, which is put on, is provided with sliding pawl,Cylinder inboard wall is provided with guide rail,Guide rail is provided with the inclined-plane being slidably matched with sliding pawl,Push rod lower end is axially provided with the guide groove being slidably matched with guide rail,Sliding pawl set lower end is provided with dials component,Dials component bottom plane is provided with to inserting needle,Dials component includes the fixation disk for being fixedly arranged on Hua Zhaotao bottom center and the movable disk composition around fixed disk rotation,Cylinder bottom end is provided with blocking ring,Spring one end is connected with blocking ring,Its other end is connect with sliding pawl set bottom surface,Sliding pawl is made of pawl sliding greatly with small sliding pawl,Make drug effect in corn,The inside and outside tissue of callosity,Shorten treatment time,Low cost.
Description
Technical field
The present invention relates to medical device applications technical fields, specifically, refer to treat human foot corn, callosity two
Secondary push type subcutaneous administration device.
Background technology
Corn is kind of a physics dermatoses, is that the skin keratin caused by human foot rubs and oppresses for a long time is Hypertrophic
Damage, disease sites center have inverted cone-shaped horn plug insertion papillary layer of corium, pressuring nerve tip, thus walk, stand when
Cause pain；Callosity is that human foot is pressurized or rubs because long-term, and local QI-blood circulation blocks and the change of skin keratin hyperplasia occurs
Thickness, serious hard swelling pain stupid because squeezing too far or having secondary infection, cannot walk.
The therapy of the treatment current generally use of above two disease is mainly external used medicine application, external application plaster medicine
Mostly use corrosive medicine, such as salicylic acid celloidin, external used medicine is applied to corn, callus tissue surface, drug corrosion by
Slowly corrode corn, callus tissue outside to inside, probably need one week time, such slowly effect, patient will often have one week
Time endures pain when walking.
Invention content
The technical problem to be solved by the present invention is to present situations for the above-mentioned prior art, and provide treatment human foot chicken
The secondary push type subcutaneous administration device of eye, callosity, subcutaneous administration device of the invention can will be applied to corn, callus tissue surface
Drug be pierced into subcutaneous tissue, increase drug and corn, callus tissue contact area, make drug effect inside and outside corn, callosity
Tissue shortens treatment time, shortens the painful time of patient, and low cost can flexibly adjust according to affected part area and apply art area.
Technical solution is used by the present invention solves above-mentioned technical problem：
Treat human foot corn, callosity secondary push type subcutaneous administration device, including cylinder from top to bottom sets successively in cylinder
It is equipped with push rod, sliding pawl set, spring, the upper end of push rod is pierced by from the centre bore of cylinder upper surface, and push rod lower end is provided with indexing
Pawl, sliding pawl, which is put on, is provided with sliding pawl, and cylinder inboard wall is provided with guide rail, and guide rail is provided with the inclined-plane being slidably matched with sliding pawl, push rod
Lower end is axially provided with the guide groove being slidably matched with guide rail, and sliding pawl set lower end is provided with dials component, the setting of dials component bottom plane
Having to inserting needle, dials component includes being fixedly arranged on the fixation disk of Hua Zhaotao bottom center and being formed around the movable disk of fixed disk rotation,
Cylinder bottom end is provided with blocking ring, and spring one end is connected with blocking ring, and the other end covers bottom surface with sliding pawl and connect, slide pawl by
Big sliding pawl is formed with small sliding pawl, presses push rod, the indexing pawl on push rod presses big sliding pawl in an axial direction, in the work of cylinder inboard wall guide rail
Under, indexing pawl and big sliding pawl not will produce sliding rotation, and sliding pawl covers compressed spring, corn, callosity group will be applied to inserting needle
The drug for knitting surface is pierced into subcutaneous tissue, and big sliding pawl is pressed onto critical point A until indexing pawl, is pierced to the greatest extent to inserting needle at this time
Enter subcutaneous tissue；Sliding pawl is sleeved under the recovery force effect of spring, and big sliding pawl can cross indexing pawl and oblique with cylinder inboard wall guide rail
Face produces relative sliding, and guide rail supports the groove between big sliding pawl and small sliding pawl therewith, and big sliding pawl stops sliding, during this,
Movable disk will not be rotated because feed is needled into subcutaneous tissue by its resistance, and sliding pawl, which covers, itself to be rotated and rise, and sliding pawl set, which drives, lives
Moving plate rises, and is extracted out of subcutaneous tissue to inserting needle；Push rod is pressed again, the indexing pawl on push rod presses big sliding pawl in an axial direction,
Critical point B until reaching small sliding pawl and guide rail is not pierced into subcutaneous tissue to inserting needle at this time, guide rail support therewith into small sliding pawl with
Groove between big sliding pawl, small sliding pawl stop sliding, and in the process, sliding pawl set drives the rotation of dials component, changes to inserting needle
It is pierced into position.
To optimize above-mentioned technical proposal, the measure taken further includes：
Above-mentioned dials component bottom plane is equipped with peace pin hole, is detachably mounted in peace pin hole to inserting needle upper end.
Above-mentioned movable disk is made of rotating disk and dials, and positioning component is provided in rotating disk, and positioning component includes cross
To the cavity being opened in rotating disk, ball, retaining spring, sunk screw, countersunk head spiral shell are disposed in cavity from the inside to the outside
Ball is pressed in the ball grooves on fixed disk by nail compression set spring, and rotating disk can be around fixed disk rotation, dials fixing sleeve
It sets on the rotating pan.
Above-mentioned cunning pawl puts on end face and is provided with cylindrical guide post, and the guiding being adapted to guide post is provided on push rod
Hole.
The number of above-mentioned guide rail is four, and the angle between adjacent rails is 90 °, corresponding, the guide groove on push rod
Number is four.
Above-mentioned cylinder body outer wall is symmetrically arranged with grips, and grips is provided with anti-skid chequer.
The treatment human foot corn of the present invention, the secondary push type subcutaneous administration device of callosity, including cylinder, in cylinder by
Push rod, sliding pawl set, spring are disposed under, the upper end of push rod is pierced by from the centre bore of cylinder upper surface, push rod lower end
Portion is provided with indexing pawl, and sliding pawl, which is put on, is provided with sliding pawl, and cylinder inboard wall is provided with guide rail, and guide rail is provided with to be slidably matched with sliding pawl
Inclined-plane, push rod lower end is axially provided with the guide groove being slidably matched with guide rail, and sliding pawl set lower end is provided with dials component, dials group
Part bottom surface is provided with to inserting needle, and dials component includes the fixation disk for being fixedly arranged on Hua Zhaotao bottom center and the work around fixed disk rotation
Moving plate forms, and cylinder bottom end is provided with blocking ring, and spring one end is connected with blocking ring, and the other end covers bottom surface with sliding pawl and connects
It connects, sliding pawl is made of pawl sliding greatly with small sliding pawl, presses push rod, the indexing pawl on push rod presses big sliding pawl in an axial direction, in cylinder
Under the action of wall guide rail, indexing pawl and big sliding pawl not will produce sliding rotation, and sliding pawl covers compressed spring, chicken will be applied to inserting needle
Eye, callus tissue surface drug be pierced into subcutaneous tissue, until big sliding pawl is pressed onto critical point A by indexing pawl, most to inserting needle at this time
The piercing subcutaneous tissue of big degree；Sliding pawl is sleeved under the recovery force effect of spring, big sliding pawl can cross indexing pawl and in cylinder
The inclined-plane of wall guide rail produces relative sliding, and guide rail supports the groove between big sliding pawl and small sliding pawl therewith, and big sliding pawl stops sliding,
During this, movable disk will not be rotated because feed is needled into subcutaneous tissue by its resistance, and sliding pawl, which covers, itself to be rotated and rise, sliding pawl
Set drives movable disk to rise, and is extracted out of subcutaneous tissue to inserting needle；Push rod is pressed again, and the indexing pawl on push rod presses in an axial direction
Big sliding pawl, the critical point B until reaching small sliding pawl and guide rail are not pierced into subcutaneous tissue to inserting needle at this time, guide rail support therewith into
Groove between small sliding pawl and big sliding pawl, small sliding pawl stop sliding, and in the process, sliding pawl set drives the rotation of dials component, changes
Become feed and be needled into position, the drug for being applied to corn, callus tissue surface can be pierced into skin by subcutaneous administration device of the invention
Undertissue increases drug and corn, callus tissue contact area, drug effect is made to be organized inside and outside corn, callosity, shortens treatment
Time, the painful time of patient is shortened, low cost can flexibly adjust according to affected part area and apply art area.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structure sectional view of the present invention；
Fig. 3 is the decomposition diagram of the present invention；
Fig. 4 is the upward view of the present invention；
Fig. 5 is the working state schematic representation of the present invention.
Specific implementation mode
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 to Fig. 5 is the structural schematic diagram of the present invention.
Reference numeral therein is：Cylinder 1, guide rail 11, push rod 2, guide groove 21, guide hole 22, indexing pawl 23, sliding pawl set 3,
Big sliding pawl 31, small sliding pawl 32, guide post 33, spring 4, to inserting needle 5, fixed disk 6, movable disk 61, peace pin hole 62, rotating disk 63,
Dials 64, blocking ring 7, positioning component 8, cavity 81, ball 82, retaining spring 83, sunk screw 84, ball grooves 85, grips 9.
Fig. 1 to Fig. 5 is the structural schematic diagram of the present invention.
Treat human foot corn, callosity secondary push type subcutaneous administration device, including cylinder 1, in cylinder 1 from top to bottom
It is disposed with push rod 2, sliding pawl set 3, spring 4, the upper end of push rod 2 is pierced by from the centre bore of 1 upper surface of cylinder, 2 lower end of push rod
Portion is provided with indexing pawl 23, and sliding pawl is provided on sliding pawl set 3, and 1 inner wall of cylinder is provided with guide rail 11, and guide rail 11 is provided with and sliding pawl
The inclined-plane being slidably matched, 2 lower end of push rod are axially provided with the guide groove 21 being slidably matched with guide rail 11, and sliding pawl covers 3 lower ends and is provided with
Dials component, dials component bottom plane are provided with to inserting needle 5, and dials component includes the fixation disk 6 for being fixedly arranged on 3 bottom center of Hua Zhaotao
It is formed with the movable disk 61 rotated around fixed disk 6, there is certain frictional force, 1 bottom end of cylinder between movable disk 61 and fixed disk 6
It is provided with blocking ring 7,1 bottom inner portion of cylinder is formed with internal thread, and 7 periphery of blocking ring is equipped with external screw thread, and blocking ring 7 is threadedly attached in cylinder
Body bottom, 4 one end of spring are connected with blocking ring 7, and the other end covers 3 bottom surfaces with sliding pawl and connect, and bullet is set in inserting needle 5
In spring, dials module diameter is less than the internal diameter of spring, and sliding pawl is made of pawl 31 sliding greatly with small sliding pawl 32, after installing, initial shape
High slightly larger than the pawl of small sliding pawl 32 to distance of 5 lower end of inserting needle away from 1 bottom surface of cylinder under state, the depth being pierced into inserting needle 5 is about etc.
The pawl that small sliding pawl 32 is subtracted in the pawl height of big sliding pawl 31 is high, and the pawl that small sliding pawl is depended on to the angle that inserting needle 5 rotates is wide, dials group
The diameter of part be less than blocking ring 7 diameter, the present invention utilize plurality of ramps anti-self-lock mechanism, the fixed-axis rotation of gear, spring
Energy is converted, as shown in figure 5, cycle operation status diagram, presses push rod 2, the indexing pawl 23 on push rod 2 presses greatly in an axial direction
Sliding pawl 31, under the action of 1 inner wall guide rail 11 of cylinder, indexing pawl 23 and big sliding pawl 31 not will produce sliding rotation, sliding 3 pressure of pawl set
The drug for being applied to corn, callus tissue surface is pierced into subcutaneous tissue by contracting spring 4 to inserting needle 5, until indexing pawl 23 will be slided greatly
Pawl 31 is pressed onto critical point A, gives inserting needle 5 to be pierced into subcutaneous tissue to the greatest extent at this time；Recovery force effect of the sliding pawl set 3 in spring 4
Under, big sliding pawl 31 can cross indexing pawl 23 and be produced relative sliding with the inclined-plane of 1 inner wall guide rail 11 of cylinder, guide rail 11 support therewith into
Groove between big sliding pawl 31 and small sliding pawl 32, big sliding pawl 31 stop sliding, and during this, movable disk 61 is because giving inserting needle 5 to be pierced into
For subcutaneous tissue by its resistance, resistance is more than the frictional force between movable disk 61 and fixed disk 6, and movable disk 61 will not rotate, sliding pawl
Set 3 itself rotates and rises, and sliding pawl set 3 drives movable disk 61 to rise, and is extracted out of subcutaneous tissue to inserting needle 5；Pressing pushes away again
Bar 2, the indexing pawl 23 on push rod 2 press big sliding pawl 31 in an axial direction, the critical point B until reaching small sliding pawl 32 and guide rail 11, this
When give inserting needle 5 to support the groove between small sliding pawl 32 and big sliding pawl 31, small sliding pawl 32 therewith without being pierced into subcutaneous tissue, guide rail 11
Stop sliding, in the process, sliding pawl set 3 drives the rotation of dials component, changes and is pierced into position, feed of the invention to inserting needle 5
Needle 5 can be stainless pin, can will be applied to corn, callus tissue surface drug be pierced into subcutaneous tissue, increase drug with
Corn, callus tissue contact area, make drug effect be organized inside and outside corn, callosity, shorten treatment time, shorten the pain of patient
The bitter time, low cost,
In embodiment, dials component bottom plane is equipped with peace pin hole 62, is detachably mounted in peace pin hole 62 to 5 upper end of inserting needle, can
According to affected part area, flexible adjustment reduces the radius of piercing to the quantity of inserting needle.
In embodiment, movable disk 61 is made of rotating disk 63 and dials 64, and positioning component 8 is provided in rotating disk 63, fixed
Hyte part 8 includes the cavity 81 being laterally opened in rotating disk 63, is disposed with ball 82, positioning in cavity 81 from the inside to the outside
Ball 82 is pressed in the ball grooves 85 on fixed disk 6 by spring 83, sunk screw 84,84 compression set spring 83 of sunk screw,
The rotation of rotating disk, the fixation of dials 64 is facilitated to be nested in rotating disk 63.
In embodiment, sliding pawl covers 3 upper surfaces and is provided with cylindrical guide post 33, is provided with and guide post 33 on push rod 2
The guide hole 22 of adaptation increases the concentricity of sliding pawl set and push rod.
In embodiment, the number of guide rail 11 is four, and the angle between adjacent rails 11 is 90 °, corresponding, push rod 2
On 21 number of guide groove be four.
In embodiment, 1 outer wall of cylinder is symmetrically arranged with grips 9, and grips 9 is provided with anti-skid chequer, and cylinder is lived in just grip
1。
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (6)
1. the secondary push type subcutaneous administration device for the treatment of human foot corn, callosity, it is characterized in that：Including cylinder (1), cylinder
(1) push rod (2), sliding pawl set (3), spring (4) are from top to bottom disposed in, the upper end of the push rod (2) is from cylinder (1)
The centre bore of end face is pierced by, and push rod (2) lower end is provided with indexing pawl (23), and sliding pawl is provided on the sliding pawl set (3),
Cylinder (1) inner wall is provided with guide rail (11), and the guide rail (11) is provided with the inclined-plane being slidably matched with sliding pawl, the push rod
(2) lower end is axially provided with the guide groove (21) being slidably matched with guide rail (11), and sliding pawl set (3) lower end is provided with dials group
Part, the dials component bottom plane, which is provided with, gives inserting needle (5), and the dials component includes being fixedly arranged on sliding pawl set (3) bottom center
Fixed disk (6) and movable disk (61) composition rotated around fixed disk (6), cylinder (1) bottom end is provided with blocking ring (7), described
Spring (4) one end is connected with the blocking ring (7), and the other end is connect with sliding pawl set (3) bottom surface, the sliding pawl
It is made of with small sliding pawl (32) pawl (31) sliding greatly, pressing push rod (2), the indexing pawl (23) on push rod (2) presses big cunning in an axial direction
Pawl (31), under the action of cylinder (1) inner wall guide rail (11), indexing pawl (23) and big sliding pawl (31) not will produce sliding rotation,
The drug for being applied to corn, callus tissue surface is pierced into subcutaneous tissue, directly by sliding pawl set (3) compressed spring (4) to inserting needle (5)
Pawl (31) will be slided greatly to indexing pawl (23) and is pressed onto critical point A, be pierced into subcutaneous tissue to the greatest extent to inserting needle (5) at this time；Sliding pawl
Cover (3) under the recovery force effect of spring (4), pawl (31) sliding greatly can cross indexing pawl (23) and with cylinder (1) inner wall guide rail
(11) inclined-plane produces relative sliding, and guide rail (11) supports the groove between big sliding pawl (31) and small sliding pawl (32) therewith, big sliding
Pawl (31) stops sliding, and during this, movable disk (61) will not be rotated because being pierced into subcutaneous tissue to inserting needle (5) by its resistance, be slided
Pawl set (3) itself rotates and rises, and sliding pawl set (3) drives movable disk (61) to rise, and is extracted out of subcutaneous tissue to inserting needle (5)；
Push rod (2) is pressed again, and the indexing pawl (23) on push rod (2) presses big sliding pawl (31) in an axial direction, until reaching small sliding pawl (32)
With the critical point B of guide rail (11), inserting needle (5) is given to be supported therewith into small sliding pawl (32) without being pierced into subcutaneous tissue, guide rail (11) at this time
With the groove between big sliding pawl (31), small sliding pawl (32) stops sliding, and in the process, sliding pawl set (3) drives the rotation of dials component
Turn, changes and be pierced into position to inserting needle (5).
2. the secondary push type subcutaneous administration device for the treatment of human foot corn according to claim 1, callosity, feature
It is：The dials component bottom plane is equipped with peace pin hole (62), described to be detachably mounted to peace pin hole (62) to inserting needle (5) upper end
It is interior.
3. the secondary push type subcutaneous administration device for the treatment of human foot corn according to claim 2, callosity, feature
It is：The movable disk (61) is made of rotating disk (63) and dials (64), and positioning component is provided on the rotating disk (63)
(8), positioning component (8) includes laterally being opened in cavity (81) in rotating disk (63), in the cavity (81) from the inside to the outside according to
Secondary to be provided with ball (82), retaining spring (83), sunk screw (84), sunk screw (84) compression set spring (83) is by ball
(82) it is pressed in the ball grooves (85) on fixed disk (6) Nei, dials (64) fixation is nested in rotating disk (63).
4. the secondary push type subcutaneous administration device for the treatment of human foot corn according to claim 3, callosity, feature
It is：Sliding pawl set (3) upper surface is provided with cylindrical guide post (33), is provided on the push rod (2) and guide post
(33) guide hole (22) being adapted to.
5. the secondary push type subcutaneous administration device for the treatment of human foot corn according to claim 4, callosity, feature
It is：The number of the guide rail (11) is four, and the angle between adjacent rails (11) is 90 °, corresponding, on push rod (2)
Guide groove (21) number is four.
6. the secondary push type subcutaneous administration device for the treatment of human foot corn according to claim 5, callosity, feature
It is：Cylinder (1) outer wall is symmetrically arranged with grips (9), and the grips (9) is provided with anti-skid chequer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188015.3A CN108744256B (en) | 2018-03-07 | 2018-03-07 | Secondary press type subcutaneous drug delivery device for treating corn and callus of human foot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188015.3A CN108744256B (en) | 2018-03-07 | 2018-03-07 | Secondary press type subcutaneous drug delivery device for treating corn and callus of human foot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108744256A true CN108744256A (en) | 2018-11-06 |
| CN108744256B CN108744256B (en) | 2020-12-01 |
Family
ID=63980151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810188015.3A Active CN108744256B (en) | 2018-03-07 | 2018-03-07 | Secondary press type subcutaneous drug delivery device for treating corn and callus of human foot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108744256B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113300A (en) * | 2020-01-07 | 2020-05-08 | 无为县金顺机动车检测有限公司 | Clamp for detecting automobile exhaust manifold |
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| CN205569509U (en) * | 2016-02-05 | 2016-09-14 | 种丽君 | Skin kingpin of dosing |
| CN106798963A (en) * | 2017-03-14 | 2017-06-06 | 重庆市中医院 | Micropin roller |
| KR20180007365A (en) * | 2016-07-12 | 2018-01-23 | 주식회사 로보맥스 | Injection needle module |
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| CN102369039A (en) * | 2009-03-31 | 2012-03-07 | 罗伯特·博世有限公司 | Applicator for treating skin |
| US20130226098A1 (en) * | 2010-10-07 | 2013-08-29 | Hisamitsu Pharmaceutical Co., Inc. | Applicator |
| CN202113484U (en) * | 2011-05-23 | 2012-01-18 | 苏州东邦医疗器械有限公司 | Module for skin resurfacing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111113300A (en) * | 2020-01-07 | 2020-05-08 | 无为县金顺机动车检测有限公司 | Clamp for detecting automobile exhaust manifold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108744256B (en) | 2020-12-01 |
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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 |
Inventor after: Wang Yujie Inventor after: Lu Le Inventor before: Lu Le |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201116 Address after: No.211, unit 6, building 2, 239 Huihe Road, Rencheng District, Jining City, Shandong Province, 272000 Applicant after: Wang Yujie Address before: Room 601, Unit N2, Huimin District, Yunlong District, Xuzhou City, Jiangsu Province Applicant before: Lu Le |
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