CN108904144A - A kind of orthopaedic gypsum convenient to use is cut - Google Patents
A kind of orthopaedic gypsum convenient to use is cut Download PDFInfo
- Publication number
- CN108904144A CN108904144A CN201810812276.8A CN201810812276A CN108904144A CN 108904144 A CN108904144 A CN 108904144A CN 201810812276 A CN201810812276 A CN 201810812276A CN 108904144 A CN108904144 A CN 108904144A
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- Prior art keywords
- handle
- lower tool
- cut
- fixedly connected
- convenient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F15/00—Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages
- A61F15/02—Devices for cutting bandages of any kind, e.g. shears, cast-cutting saws
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of orthopaedic gypsums convenient to use to cut, including upper handle and lower handle, one end of the upper handle and lower handle is hinged, the upper handle and the hinged one end of lower handle are connected separately with upper knife and lower tool, the lower tool offers cutting groove far from the side of upper knife, the inner wall bottom of the cutting groove is fixedly connected with motor by automatically controlled telescopic rod, the inner wall longitudinal sliding motion of the motor and cutting groove connects, the output end of the motor runs through cutting groove and extends to the outside of cutting groove, one end that the output end of the motor is located at outside cutting groove is fixedly connected with cutting wheel, the diameter of the cutting wheel is less than the width of lower tool, the bottom of the lower tool offers pressure tank, the present invention relates to orthopedic instrument technical fields.The orthopaedic gypsum convenient to use is cut, and more can shear gypsum in labour-saving, while can be avoided plaster shears when cutting gypsum and being damaged to patient.
Description
Technical field
The present invention relates to orthopedic instrument technical field, specially a kind of orthopaedic gypsum convenient to use is cut.
Background technique
The professional medical instrument that orthopedic instrument refers generally to dedicated for bone surgery, by state food drug surveilance office
Classifying and dividing is often divided into：A kind of, two classes and three classes, dividing according to usage and performance can be divided into again：Joint instrument, backbone device
Tool, wound instrument and basic instrument etc., basic instrument is following several to having greatly：Basic surgical needles, hook, basic surgery with cut,
Basic surgery knife, basic surgery pincers and basis surgery other instruments.But existing surgery is simple with gypsum shear structure,
It is relatively elaborate when cutting gypsum, while the process for cutting gypsum does not have supporting point, is easy to receive patient more when touching patient
Serious damage.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of orthopaedic gypsums convenient to use to cut, and solves existing
Surgery it is simple with gypsum shear structure, it is relatively elaborate when cutting gypsum, while the process for cutting gypsum does not have supporting point, touches disease
The problem of making patient receive more serious damage is easy when people.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of orthopaedics stone convenient to use
Cream is cut, including upper handle and lower handle, and one end of the upper handle and lower handle is hinged, and the upper handle is under
Handle hinged one end in portion's is connected separately with upper knife and lower tool, and the lower tool is opened far from the side of upper knife
Equipped with cutting groove, the inner wall bottom of the cutting groove is fixedly connected with motor, the motor and cutting groove by automatically controlled telescopic rod
Inner wall longitudinal sliding motion connection, the output end of the motor is through cutting groove and extends to the outside of cutting groove, the motor
Output end be located at one end outside cutting groove and be fixedly connected with cutting wheel, the diameter of the cutting wheel is less than the width of lower tool
Degree, the bottom of the lower tool offers pressure tank, is rotatably connected to spherical pressure-bearing between the inner wall two sides of the pressure tank
Block, the spherical shape pressure block includes body of rubber and arc sheetmetal, and the inner lower edge of the lower handle and lower tool is equal
Link slot is offered, the rotating bar of the spherical shape pressure block runs through lower tool and extends to the inner wall of link slot, the ball
One end that the rotating bar of shape pressure block extends to link slot inner wall is fixedly connected with the first bevel type gear, first bevel type gear
Side far from spherical shape pressure block is sequentially connected with control-rod by the second bevel type gear, and the bottom of the lower handle is far under
One end of portion's cutter opens up fluted, and the one end of the control-rod far from lower tool is through lower handle and extending to groove
Inside, the control-rod, which is located on the outside of the positions of inside grooves, is sequentially connected with rotate gear by transmission gear, described turn
The side of moving gear and the inner wall of groove are rotatablely connected.
Preferably, the top that the side of the lower tool is located at cutting wheel is rotatably connected to safety catch by link block
Plate.
Preferably, sawtooth is fixedly connected on the inside of the upper knife and lower tool.
Preferably, the lower tool offers observation panel, the inner wall bottom of the observation panel far from the side of lower handle
Portion is fixedly connected with LED light, and the inner wall of the observation panel is fixedly connected with camera close to the side of lower handle.
Preferably, spring leaf is fixedly connected between the upper handle and lower handle.
Preferably, the upper handle and lower handle are fixedly connected to threaded rod close to the side of lower tool, institute
It states upper handle and lower handle and passes through threaded rod and be threadedly coupled respectively with upper knife and lower tool.
Preferably, the side of the rotate gear is fixedly connected with handler.
Preferably, the side of the lower tool offers control flume, and the inner wall of the control flume is equipped with power supply, described
The side of lower handle is provided with switch, passes through between the power supply, switch, automatically controlled telescopic rod, motor, LED light and camera
Conducting wire is electrically connected.
Preferably, the side of the power supply offers battery settling groove.
Preferably, the inner wall of the control flume is fixedly connected with fixture block, offers on the outside of the power supply and mutually fits with fixture block
The card slot matched.
(3) beneficial effect
The present invention provides a kind of orthopaedic gypsums convenient to use to cut.Has following beneficial effect：
(1), the orthopaedic gypsum convenient to use is cut, by being fixedly connected on the inside of upper knife and lower tool
Sawtooth, lower tool offer cutting groove far from the side of upper knife, and the inner wall bottom of the cutting groove passes through automatically controlled flexible
Bar is fixedly connected with motor, and the inner wall longitudinal sliding motion connection of the motor and cutting groove, the output end of the motor is through cutting
Slot and the outside for extending to cutting groove, one end that the output end of the motor is located at outside cutting groove are fixedly connected with cutting
Wheel, when that can not be cut off gypsum using sawtooth, is risen to cutting wheel on automatically controlled telescopic rod pushing motor and is higher by lower tool, electricity
Machine drives cutting wheel to cut gypsum, more can shear gypsum in labour-saving.
(2), the orthopaedic gypsum convenient to use is cut, and offers pressure tank, the pressure-bearing by the bottom of lower tool
It is rotatably connected to spherical pressure block between the inner wall two sides of slot, the spherical shape pressure block includes body of rubber and arc sheetmetal,
The inner lower edge of the lower handle and lower tool offers link slot, and the rotating bar of the spherical shape pressure block runs through lower part
Cutter and the inner wall for extending to link slot, the rotating bar of the spherical shape pressure block extend to the fixed company in one end of link slot inner wall
It is connected to the first bevel type gear, first bevel type gear is sequentially connected far from the side of spherical pressure block by the second bevel type gear
There is a control-rod, the bottom of the lower handle opens up fluted far from one end of lower tool, and the control-rod is far from lower part knife
One end of tool runs through lower handle and extends to the inside of groove, and the control-rod, which is located on the outside of the position of inside grooves, to be passed through
Transmission gear is sequentially connected with rotate gear, and the side of the rotate gear and the inner wall of groove are rotatablely connected, the turning gear
The side of wheel is fixedly connected with handler, when arc sheetmetal is located at spherical pressure block far from lower tool side by lower part knife
Tool protrudes into the position between patient and gypsum, then rotates handler and rotates arc sheetmetal inside pressure tank, body of rubber
It is contacted with patient, can be avoided plaster shears when cutting gypsum and be damaged to patient, body of rubber position is as supporting point when cutting gypsum
Gypsum can more easily be cut.
Detailed description of the invention
Fig. 1 is schematic structural diagram of the device of the invention；
Fig. 2 is cutting wheel structural schematic diagram of the present invention；
Fig. 3 is lower tool side structure schematic diagram of the present invention；
Fig. 4 is the spherical pressure block structural schematic diagram of the present invention.
In figure：1- upper handle, 2- lower handle, 3- upper knife, 4- lower tool, 5- cutting groove, 6- are automatically controlled flexible
Bar, 7- motor, 8- cutting wheel, 9- pressure tank, 10- spherical shape pressure block, 11- body of rubber, 12- arc sheetmetal, 13- connection
Slot, the first bevel type gear of 14-, the second bevel type gear of 15-, 16- control-rod, 17- groove, 18- transmission gear, 19- rotate gear,
20- link block, 21- safety screen, 22- sawtooth, 23- observation panel, 24-LED lamp, 25- camera, 26- spring leaf, 27- screw thread
Bar, 28- handler, 29- control flume, 30- power supply, 31- switch, 32- battery settling groove, 33- fixture block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution：A kind of orthopaedic gypsum convenient to use is cut, including upper
One end of portion's handle 1 and lower handle 2, upper handle 1 and lower handle 2 is hinged, and upper handle 1 and lower handle 2 are hinged
One end is connected separately with upper knife 3 and lower tool 4, and lower tool 4 offers cutting groove 5 far from the side of upper knife 3,
The inner wall bottom of cutting groove 5 is fixedly connected with motor 7, the inner wall longitudinal sliding motion of motor 7 and cutting groove 5 by automatically controlled telescopic rod 6
The output end of connection, motor 7 runs through cutting groove 5 and extends to the outside of cutting groove 5, and the output end of motor 7 is located at cutting groove 5
External one end is fixedly connected with cutting wheel 8, when gypsum can not be cut off using sawtooth 22, automatically controlled 6 pushing motor 7 of telescopic rod
It rises to cutting wheel 8 and is higher by lower tool 4, motor 7 drives cutting wheel 8 to cut gypsum, more can shear gypsum in labour-saving, cut
The diameter for cutting wheel 8 is less than the width of lower tool 4, and the bottom of lower tool 4 offers pressure tank 9, the inner wall two sides of pressure tank 9
Between be rotatably connected to spherical pressure block 10, spherical pressure block 10 includes body of rubber 11 and arc sheetmetal 12, lower handle 2
Link slot 13 is offered with the inner lower edge of lower tool 4, the rotating bar of spherical pressure block 10 through lower tool 4 and is prolonged
The inner wall of link slot 13 is extended to, one end that the rotating bar of spherical pressure block 10 extends to 13 inner wall of link slot is fixedly connected with first
Bevel type gear 14, the first bevel type gear 14 are sequentially connected with control by the second bevel type gear 15 far from the side of spherical pressure block 10
The bottom of bar 16 processed, lower handle 2 opens up fluted 17 far from one end of lower tool 4, and control-rod 16 is far from lower tool 4
One end runs through lower handle 2 and extends to the inside of groove 17, and control-rod 16, which is located on the outside of the position inside groove 17, to be passed through
Transmission gear 18 is sequentially connected with rotate gear 19, and the side of rotate gear 19 and the inner wall of groove 17 are rotatablely connected, and works as arc
Lower tool 4 is protruded into the position between patient and gypsum when being located at spherical pressure block 10 far from 4 side of lower tool by metal plate 12
It sets, then rotates handler 28 and turn to arc sheetmetal 12 inside pressure tank 9, body of rubber 11 is contacted with patient, can
Plaster shears is damaged to patient when avoiding cutting gypsum, and 11 position of body of rubber can more easily be cut as supporting point when cutting gypsum
Gypsum.
The top that the side of lower tool 4 is located at cutting wheel 8 is rotatably connected to safety screen 21 by link block 20.
The inside of upper knife 3 and lower tool 4 is fixedly connected to sawtooth 22.
Lower tool 4 offers observation panel 23 far from the side of lower handle 2, and the inner wall bottom of observation panel 23 is fixedly connected
There is LED light 24, the inner wall of observation panel 23 is fixedly connected with camera 25 close to the side of lower handle 2, and LED light 24 increases bright
Degree is shot by camera 25 and is damaged to patient during avoiding cutting gypsum.
Spring leaf 26 is fixedly connected between upper handle 1 and lower handle 2.
Upper handle 1 and lower handle 2 are fixedly connected to threaded rod 27 close to the side of lower tool 4, facilitate top
The installation and removal of cutter 3 and lower tool 4 and upper handle 1 and lower handle 2, upper handle 1 and lower handle 2 pass through
Threaded rod 27 is threadedly coupled with upper knife 3 and lower tool 4 respectively.
The side of rotate gear 19 is fixedly connected with handler 28, rotation handler 28 and then spherical 10 turns of the pressure block of drive
It is dynamic.
The side of lower tool 4 offers control flume 29, and the inner wall of control flume 29 is equipped with power supply 30, lower handle 2
Side is provided with switch 31, by leading between power supply 30, switch 31, automatically controlled telescopic rod 6, motor 7, LED light 24 and camera 25
Line is electrically connected.
The side of power supply 30 offers battery settling groove 32.
The inner wall of control flume 29 is fixedly connected with fixture block 33, and the outside of power supply 30 offers card compatible with fixture block 33
Slot.
When work, lower tool 4 is stretched when arc sheetmetal 12 is located at spherical pressure block 10 far from 4 side of lower tool
Enter the position between patient and gypsum, then rotates handler 28 and turn to arc sheetmetal 12 inside pressure tank 9, rubber master
Body 11 is contacted with patient, and when that can not be cut off gypsum using sawtooth 22, automatically controlled 6 pushing motor 7 of telescopic rod rises to cutting wheel 8
It is higher by lower tool 4, motor 7 drives cutting wheel 8 to cut gypsum, and LED light 24 increases brightness, avoids cutting by the shooting of camera 25
Patient is damaged to during gypsum.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of orthopaedic gypsum convenient to use is cut, including upper handle (1) and lower handle (2), it is characterised in that：It is described
One end of upper handle (1) and lower handle (2) is hinged, the upper handle (1) and lower handle (2) it is hinged one end difference
It is connected with upper knife (3) and lower tool (4), the lower tool (4) offers cutting far from the side of upper knife (3)
Slot (5), the inner wall bottom of the cutting groove (5) are fixedly connected with motor (7) by automatically controlled telescopic rod (6), the motor (7) with
The inner wall longitudinal sliding motion of cutting groove (5) connects, and the output end of the motor (7) through cutting groove (5) and extends to cutting groove
(5) outside, the output end of the motor (7) is located at the external one end of cutting groove (5) and is fixedly connected with cutting wheel (8), described
The diameter of cutting wheel (8) is less than the width of lower tool (4), and the bottom of the lower tool (4) offers pressure tank (9), institute
It states and is rotatably connected between the inner wall two sides of pressure tank (9) spherical pressure block (10), the spherical shape pressure block (10) includes rubber
The inner lower edge of main body (11) and arc sheetmetal (12), the lower handle (2) and lower tool (4) offers link slot
(13), the rotating bar of the spherical pressure block (10) runs through lower tool (4) and extends to the inner wall of link slot (13), described
One end that the rotating bar of spherical pressure block (10) extends to link slot (13) inner wall is fixedly connected with the first bevel type gear (14), institute
It states the first bevel type gear (14) and is sequentially connected with control by the second bevel type gear (15) far from the side of spherical pressure block (10)
The bottom of bar (16), the lower handle (2) opens up fluted (17), the control-rod far from one end of lower tool (4)
(16) one end far from lower tool (4) runs through lower handle (2) and extends to the inside of groove (17), the control-rod
(16) it is located on the outside of groove (17) internal position and is sequentially connected with rotate gear (19), the rotation by transmission gear (18)
The side of gear (19) and the inner wall of groove (17) are rotatablely connected.
2. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The lower tool
(4) top that side is located at cutting wheel (8) is rotatably connected to safety screen (21) by link block (20).
3. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The upper knife
(3) and on the inside of lower tool (4) it is fixedly connected to sawtooth (22).
4. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The lower tool
(4) side far from lower handle (2) offers observation panel (23), and the inner wall bottom of the observation panel (23) is fixedly connected with
The inner wall of LED light (24), the observation panel (23) is fixedly connected with camera (25) close to the side of lower handle (2).
5. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The upper handle
(1) it is fixedly connected between lower handle (2) spring leaf (26).
6. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The upper handle
(1) be fixedly connected to threaded rod (27) with lower handle (2) close to the side of lower tool (4), the upper handle (1) and
Lower handle (2) is threadedly coupled with upper knife (3) and lower tool (4) by threaded rod (27) respectively.
7. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The rotate gear
(19) side is fixedly connected with handler (28).
8. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The lower tool
(4) side offers control flume (29), and the inner wall of the control flume (29) is equipped with power supply (30), the lower handle (2)
Side be provided with switch (31), the power supply (30), switch (31), automatically controlled telescopic rod (6), motor (7), LED light (24) and
It is electrically connected between camera (25) by conducting wire.
9. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The power supply (30)
Side offers battery settling groove (32).
10. a kind of orthopaedic gypsum convenient to use according to claim 1 is cut, it is characterised in that：The control flume
(29) inner wall is fixedly connected with fixture block (33), is offered on the outside of the power supply (30) and fixture block (33) compatible card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810812276.8A CN108904144B (en) | 2018-07-23 | 2018-07-23 | Orthopedics gypsum scissors who facilitates use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810812276.8A CN108904144B (en) | 2018-07-23 | 2018-07-23 | Orthopedics gypsum scissors who facilitates use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108904144A true CN108904144A (en) | 2018-11-30 |
| CN108904144B CN108904144B (en) | 2020-12-22 |
Family
ID=64415514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810812276.8A Expired - Fee Related CN108904144B (en) | 2018-07-23 | 2018-07-23 | Orthopedics gypsum scissors who facilitates use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108904144B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839908A (en) * | 2020-07-20 | 2020-10-30 | 刘小伟 | Fixed gypsum clout clipping machine of using of orthopedics limbs |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0657254A1 (en) * | 1993-11-10 | 1995-06-14 | ORBIS-Werk Groten GmbH + Co. KG | Combination tool |
| KR20110019410A (en) * | 2011-02-09 | 2011-02-25 | 김예림 | Cutter for gypsum |
| CN203089571U (en) * | 2013-03-11 | 2013-07-31 | 李军 | Fast gypsum shears |
| CN204600609U (en) * | 2015-05-05 | 2015-09-02 | 漯河医学高等专科学校 | A kind of dissection bone shears |
| CN106618881A (en) * | 2017-01-16 | 2017-05-10 | 成都迅德科技有限公司 | Medical gypsum scissors |
| CN107260407A (en) * | 2017-06-12 | 2017-10-20 | 常楚笛 | Plaster shears |
| CN207101331U (en) * | 2017-02-25 | 2018-03-16 | 张依军 | A kind of new rib scissors |
-
2018
- 2018-07-23 CN CN201810812276.8A patent/CN108904144B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0657254A1 (en) * | 1993-11-10 | 1995-06-14 | ORBIS-Werk Groten GmbH + Co. KG | Combination tool |
| KR20110019410A (en) * | 2011-02-09 | 2011-02-25 | 김예림 | Cutter for gypsum |
| CN203089571U (en) * | 2013-03-11 | 2013-07-31 | 李军 | Fast gypsum shears |
| CN204600609U (en) * | 2015-05-05 | 2015-09-02 | 漯河医学高等专科学校 | A kind of dissection bone shears |
| CN106618881A (en) * | 2017-01-16 | 2017-05-10 | 成都迅德科技有限公司 | Medical gypsum scissors |
| CN207101331U (en) * | 2017-02-25 | 2018-03-16 | 张依军 | A kind of new rib scissors |
| CN107260407A (en) * | 2017-06-12 | 2017-10-20 | 常楚笛 | Plaster shears |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111839908A (en) * | 2020-07-20 | 2020-10-30 | 刘小伟 | Fixed gypsum clout clipping machine of using of orthopedics limbs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108904144B (en) | 2020-12-22 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Guo Inventor after: Peng Aiming Inventor after: Pan Yang Inventor after: Li Na Inventor before: Li Na |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201204 Address after: 437000 No. 228 Jingui Road, Xian'an District, Xianning City, Hubei Province Applicant after: XIANNING CENTRAL Hospital Address before: 264000 Building No. 589, West Zhuqi Road, Laiyang City, Yantai City, Shandong Province Applicant before: Li Na |
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Granted publication date: 20201222 Termination date: 20210723 |