CN103750879B - A kind of brill cranium device of neurosurgery - Google Patents
A kind of brill cranium device of neurosurgery Download PDFInfo
- Publication number
- CN103750879B CN103750879B CN201310617622.4A CN201310617622A CN103750879B CN 103750879 B CN103750879 B CN 103750879B CN 201310617622 A CN201310617622 A CN 201310617622A CN 103750879 B CN103750879 B CN 103750879B
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- Prior art keywords
- screw rod
- housing
- handle
- nut
- output shaft
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1695—Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1622—Drill handpieces
- A61B17/1624—Drive mechanisms therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1626—Control means; Display units
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1655—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for tapping
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Animal Behavior & Ethology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Dentistry (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurosurgery (AREA)
- Surgical Instruments (AREA)
- Radiation-Therapy Devices (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention provides a kind of brill cranium device of neurosurgery, belong to technical field of medical instruments.The technical problems such as the brill cranium device wound it solving existing neurosurgery is large, inconvenient operation.A kind of brill cranium device of neurosurgery, the output shaft comprising housing, handle and be plugged on housing, the front end of output shaft is fixedly installed a drill chuck, drill chuck is provided with a drill bit, output shaft is provided with a gear, an one-way clutch is provided with between gear and output shaft, also be provided with in housing and fan with the tooth of gears meshing, tooth fan is fixedly installed a screw rod, screw rod be arranged with a nut, be provided with a guide frame that screw rod can be driven to rotate when nut moves along screw axis direction between nut and handle.The present invention has the advantages such as wound is little, easy to operate.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to a kind of brill cranium device of neurosurgery.
Background technology
In neurosurgery clinical position, in order to Clinics and Practices, often using and bore cranium device, for boring cranium operation, being applicable to the treatment of the diseases such as ventriculography, cerebral hemorrhage, chronic subdural hematoma.
A kind of mirco-traumatic skull drill for neurosurgery clinical operation is disclosed in patent [CN 1729941 A], it includes drill body, crank, axle, drill chuck, drill bit and a pair intermeshing bevel gear, drill body is arc, a pair bevel gear, to be located in drill body on orthogonal axle respectively, bevel gear is by rocking bar and the nut be located on rocking bar and pressure is female and crank is connected as a single entity, drill chuck is located at the outside of drill body and axle is connected as a single entity, hands handle is provided with in the below of drill body, it is recessed that handle is provided with finger, drill bit is provided with scale, the top apex point of drill bit is flat pointed, structure of the present invention is simple, easy to use, fast, wound is little, patient's misery is few, be worth in neurosurgery clinical operation, especially acute great occipital foramen cerebral hernia patient rescue and all need implement external ventricular drainage patient in promote the use of, but, this brill cranium device needs doctor's two handss to operate, it is crucial that: the power resources of this brill cranium device are the bevel gears by rotating, that is doctor is when carrying out the operation of brill cranium to patient, need to rotate the crank be positioned at above drill body, rotate the drilling direction of crank on drill bit and cause larger impact, the direction of brill cranium may be offset, even if doctor constantly adjusts, also the wound boring cranium can be caused larger, position is forbidden, larger to the injury of patient, the demand of boring cranium operation cannot be met.
Summary of the invention
The object of the invention is the problems referred to above existed for existing technology, the brill cranium device of the neurosurgery that a kind of one hand can operate, structure is simple, wound is little is provided.
Object of the present invention realizes by following technical proposal: a kind of brill cranium device of neurosurgery, it is characterized in that, comprise housing, handle and the output shaft be plugged on housing, the front end of described output shaft is fixedly installed a drill chuck, described drill chuck is provided with a drill bit, described output shaft is provided with a gear, an one-way clutch is provided with between described gear and output shaft, also be provided with in described housing and fan with the tooth of described gears meshing, described tooth fan is fixedly installed a screw rod, described screw rod be arranged with a nut, a guide frame that screw rod can be driven to rotate when nut moves along screw axis direction is provided with between described nut and described handle.
Operation principle of the present invention is: when carrying out the operation of brill cranium to patient, hold handle of stopping for one, forefinger and middle finger press nut, pass through guide frame, the linear movement of this nut, be converted into the rotary motion of screw rod, power transmission is fanned to tooth, gear, output shaft and drill bit, owing to being arranged on the effect of the one-way clutch between gear and output shaft, travelling nut back and forth repeatedly, output shaft is rotated around same direction, thus carry out brill cranium hands art, in this programme, bore the power resources of cranium device and the hands of operator, without the need to connecting external power supply, convenient operation, cost is low, and this structure is simple, easily polluter is controlled, on the other hand, boring direction is identical with the direction of the active force of operator, when there is not boring, active force causes bore position to offset, drill bit swing guide is caused injury the problems such as mouth is larger, utilizing the position that people is the sensitiveest---forefinger and middle finger are as the power resources of this brill cranium device, this brill cranium device is not only made to be easy to control, and can the operation of upper frequency, the drilling efficiency of this brill cranium device is improved greatly, alleviates the misery of patient, shorten the time of operation, in this programme, adopt the drive mechanism of tooth fan and gears meshing, on the one hand, higher gear ratio can improve the rotary speed of drill bit, and on the other hand, tooth fan can reduce the overall volume of this brill cranium device.
In the brill cranium device of above-mentioned neurosurgery, described guide frame comprises several and is arranged on pilot hole on handle and is plugged in guide rod in described pilot hole and parallel with described screw rod, one end and the described nut of described guide rod are fixed, the other end of described guide rod is installed with a baffle plate, is provided with back-moving spring between the diapire of described baffle plate and described pilot hole.After forefinger and middle finger pressure nut to the bottom of handle, the restoring force of back-moving spring orders about nut and resets, and make operation more simple, wherein, nut is subject to the positioning action of guide rod, can not rotate, and can only move axially along pilot hole.
In the brill cranium device of above-mentioned neurosurgery, described housing is fixedly installed a gag lever post, described tooth fan offers an escape groove, and described gag lever post is plugged in described stopper slot.Tooth fan, under the effect of gag lever post and escape groove, is in the state of reciprocally swinging.
In the brill cranium device of above-mentioned neurosurgery, described housing exterior walls is also fixedly installed leader.Handle and handle are the holding positions of operator's two handss, and in the boring of brill cranium device originally, can play the effect of auxiliary positioning, also handled easily person is slowing down fatigue to handle.
In the brill cranium device of above-mentioned neurosurgery, the two ends of described screw rod are plugged in described handle and housing respectively, and screw rod is all connected by bearing with between handle and housing.
In the brill cranium device of above-mentioned neurosurgery, the arc-shaped of described escape groove to be radian be 0.5 π.The rotating 90 ° of tooth fan is one-period.
In the brill cranium device of above-mentioned neurosurgery, the pitch of described screw rod is between 40 ~ 60mm.The pitch of the screw rod in this brill cranium device is comparatively large, only needs less strength that screw rod can be made to rotate.
In the brill cranium device of above-mentioned neurosurgery, the gear ratio between described tooth fan and gear is 10 ~ 15.High gear ratio can improve the rate of penetration of drill bit, reduces the reciprocating frequence of nut, improves the light degree of operation.
In the brill cranium device of above-mentioned neurosurgery, described tooth is fanned as plastic material is made.The tooth fan that plastic material is made has the feature of light weight, and inertia force is little, and make impulsive force during tooth fan reciprocally swinging little, and the overall weight of whole brill cranium device is also less, use light, borehole accuracy is high, and wound is little.
Compared with prior art, the present invention has the following advantages:
1, owing to being arranged on the effect of the one-way clutch between gear and output shaft, travelling nut back and forth repeatedly, makes output shaft rotate around same direction, thus carries out the operation of brill cranium.
2, in this programme, bore the power resources of cranium device and the hands of operator, without the need to connecting external power supply, convenient operation, cost are low, and this structure is simple, easily controls polluter.
3, the boring direction of this brill cranium device is identical with the direction of the active force of operator, and when there is not boring, active force causes bore position to offset, drill bit swing guide causes injury the problems such as mouth is larger.
4, this brill cranium device position of utilizing people the sensitiveest---forefinger and middle finger are as the power resources of this brill cranium device, this brill cranium device is not only made to be easy to control, and can the operation of upper frequency, the drilling efficiency of this brill cranium device is improved greatly, alleviates the misery of patient, shorten the time of operation.
5, in this programme, adopt the drive mechanism of tooth fan and gears meshing, on the one hand, higher gear ratio can improve the rotary speed of drill bit, and on the other hand, tooth fan can reduce the overall volume of this brill cranium device.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this brill cranium device.
Fig. 2 is the sectional view in Fig. 1 on A direction.
Fig. 3 is the structural representation of screw rod in this brill cranium device.
In figure, 1, housing; 2, hands handle; 3, output shaft; 4, drill chuck; 5, drill bit; 61, gear; 62, tooth fan; 63, one-way clutch; 64, screw rod; 65, nut; 7, guide frame; 71, pilot hole; 72, guide rod; 73, baffle plate; 74, back-moving spring; 81, gag lever post; 82, escape groove; 9, handle.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As depicted in figs. 1 and 2, the brill cranium device of this neurosurgery comprises housing 1, handle 2 and the output shaft 3 be plugged on housing 1, the front end of output shaft 3 is fixedly installed a drill chuck 4, drill chuck 4 is provided with a drill bit 5, output shaft 3 is provided with a gear 61, an one-way clutch 63 is provided with between gear 61 and output shaft 3, also be provided with the tooth engaged with gear 61 in housing 1 and fan 62, tooth fan 62 is fixedly installed a screw rod 64, screw rod 64 be arranged with a nut 65, a guide frame 7 that screw rod 64 can be driven to rotate when nut 65 moves along screw rod 64 axis direction is provided with between nut 65 and handle 2.
As shown in Figure 2, guide frame 7 comprises two and is arranged on pilot hole 71 on handle 2 and is plugged in guide rod 72 in pilot hole 71 and parallel with screw rod 64, one end and the described nut 65 of guide rod 72 are fixed, the other end of guide rod 72 is installed with a baffle plate 73, back-moving spring 74 is provided with between the diapire of baffle plate 73 and pilot hole 71, behind the bottom of forefinger and middle finger pressure nut 65 to handle 2, the restoring force of back-moving spring 74 orders about nut 65 and resets, make operation simpler, wherein, nut 65 is subject to the positioning action of guide rod 72, can not rotate, can only move axially along pilot hole 71, housing 1 is fixedly installed a gag lever post 81, tooth fan 62 offers an escape groove 82, gag lever post 81 is plugged in stopper slot, tooth fan 62 is under the effect of gag lever post 81 and escape groove 82, be in the state of reciprocally swinging.
As shown in Figures 2 and 3, housing 1 outer wall is also fixedly installed leader 9, handle 9 and handle 2 are holding positions of operator's two handss, handle 9 in the boring of brill cranium device originally, the effect of auxiliary positioning can be played, also handled easily person is slowing down fatigue, the two ends of screw rod 64 are plugged in handle 2 and housing 1 respectively, and screw rod 64 is all connected by bearing with between handle 2 and housing 1, escape groove 82 for radian be the arc-shaped of 0.5 π, tooth fans 62 rotating 90 ° for one-period, and the pitch of screw rod 64 is between 40 ~ 60mm.The pitch of the screw rod 64 in this brill cranium device is larger, only need less strength that screw rod 64 can be made to rotate, the gear ratio between tooth fan 62 and gear 61 is 10 ~ 15, and high gear ratio can improve the rate of penetration of drill bit 5, reduce the reciprocating frequence of nut 65, improve the light degree of operation.
Tooth fan 62 is made for plastic material, and the tooth that plastic material is made fans the feature that 62 have light weight, and inertia force is little, and impulsive force when making tooth fan 62 reciprocally swinging is little, and the overall weight of whole brill cranium device is also less, and use light, borehole accuracy is high, and wound is little.
Operation principle of the present invention is: when carrying out the operation of brill cranium to patient, one holds handle 2, forefinger and middle finger press nut 65, by guide frame 7, the linear movement of this nut 65, be converted into the rotary motion of screw rod 64, by power transmission to tooth fan 62, gear 61, output shaft 3 and drill bit 5, owing to being arranged on the effect of the one-way clutch 63 between gear 61 and output shaft 3, travelling nut 65 back and forth repeatedly, output shaft 3 is rotated around same direction, thus carry out brill cranium hands art, in this programme, bore the power resources of cranium device and the hands of operator, without the need to connecting external power supply, convenient operation, cost is low, and this structure is simple, easily polluter is controlled, on the other hand, boring direction is identical with the direction of the active force of operator, when there is not boring, active force causes bore position to offset, drill bit 5 swing guide is caused injury the problems such as mouth is larger, utilizing the position that people is the sensitiveest---forefinger and middle finger are as the power resources of this brill cranium device, this brill cranium device is not only made to be easy to control, and can the operation of upper frequency, the drilling efficiency of this brill cranium device is improved greatly, alleviates the misery of patient, shorten the time of operation, in this programme, adopt the drive mechanism that tooth fan 62 and gear 61 engage, on the one hand, higher gear ratio can improve the rotary speed of drill bit 5, and on the other hand, tooth fan 62 can reduce the overall volume of this brill cranium device.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. the brill cranium device of a neurosurgery, it is characterized in that, comprise housing (1), handle (2) and the output shaft (3) be plugged on housing (1), the front end of described output shaft (3) is fixedly installed a drill chuck (4), described drill chuck (4) is provided with a drill bit (5), described output shaft (3) is provided with a gear (61), an one-way clutch (63) is provided with between described gear (61) and output shaft (3), also be provided with the tooth engaged with described gear (61) in described housing (1) to fan (62), described tooth fan (62) is fixedly installed a screw rod (64), described screw rod (64) be arranged with a nut (65), a guide frame (7) that screw rod (64) can be driven to rotate when nut (65) moves along screw rod (64) axis direction is provided with between described nut (65) and described handle (2), described guide frame (7) comprises several and is arranged on pilot hole (71) on handle (2) and is plugged in guide rod (72) in described pilot hole (71) and parallel with described screw rod (64), one end of described guide rod (72) and described nut (65) are fixed, the other end of described guide rod (72) is installed with a baffle plate (73), is provided with back-moving spring (74) between the diapire of described baffle plate (73) and described pilot hole (71).
2. the brill cranium device of neurosurgery according to claim 1, it is characterized in that, described housing (1) is fixedly installed a gag lever post (81), described tooth fan (62) offers an escape groove (82), and described gag lever post (81) is plugged in described stopper slot.
3. the brill cranium device of neurosurgery according to claim 2, is characterized in that, described housing (1) outer wall is also fixedly installed leader (9).
4. the brill cranium device of neurosurgery according to claim 3, it is characterized in that, the two ends of described screw rod (64) are plugged in described handle (2) and housing (1) respectively, and screw rod (64) is all connected by bearing with between handle (2) and housing (1).
5. the brill cranium device of neurosurgery according to claim 4, is characterized in that, described escape groove (82) for radian be the arc-shaped of 0.5 π.
6. the brill cranium device of neurosurgery according to claim 5, is characterized in that, the pitch of described screw rod (64) is between 40 ~ 60mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617622.4A CN103750879B (en) | 2013-11-28 | 2013-11-28 | A kind of brill cranium device of neurosurgery |
| CN201510244462.2A CN104825205B (en) | 2013-11-28 | 2013-11-28 | A kind of skull drilling device of the neurosurgery of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617622.4A CN103750879B (en) | 2013-11-28 | 2013-11-28 | A kind of brill cranium device of neurosurgery |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510244462.2A Division CN104825205B (en) | 2013-11-28 | 2013-11-28 | A kind of skull drilling device of the neurosurgery of improvement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103750879A CN103750879A (en) | 2014-04-30 |
| CN103750879B true CN103750879B (en) | 2015-09-02 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310617622.4A Expired - Fee Related CN103750879B (en) | 2013-11-28 | 2013-11-28 | A kind of brill cranium device of neurosurgery |
| CN201510244462.2A Active CN104825205B (en) | 2013-11-28 | 2013-11-28 | A kind of skull drilling device of the neurosurgery of improvement |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510244462.2A Active CN104825205B (en) | 2013-11-28 | 2013-11-28 | A kind of skull drilling device of the neurosurgery of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103750879B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3044235A1 (en) * | 2016-11-17 | 2018-05-24 | Peter L. BONO | Rotary oscillating surgical tool |
| CN107343809B (en) * | 2017-08-30 | 2019-10-18 | 王兴铧 | A kind of skull drilling device of neurosurgery |
| CN107874808B (en) * | 2017-12-15 | 2024-03-29 | 温州市中心医院 | Cranium driller for neurosurgery operation |
| CN109893206A (en) * | 2019-04-17 | 2019-06-18 | 遵义市红花岗区人民医院 | A kind of neurosurgery drilling equipment |
| CN110200676B (en) * | 2019-06-05 | 2020-08-28 | 解涛 | Neurosurgery is with boring cranium ware based on VR technique |
| CN112545606A (en) * | 2020-12-03 | 2021-03-26 | 西安交通大学医学院第一附属医院 | Skull drill for neurosurgery operation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29500769U1 (en) * | 1995-01-22 | 1995-04-27 | Rübben, Alexander, 52074 Aachen | Modification of a skull revision drill by mechanical consistency-dependent control and safety device |
| CN2750782Y (en) * | 2004-10-25 | 2006-01-11 | 高勇 | Hand rotated type safety skull opening bore |
| CN1729941A (en) * | 2005-08-29 | 2006-02-08 | 张庆林 | Mirco-traumatic skull drill |
| CN201414823Y (en) * | 2009-05-26 | 2010-03-03 | 金成福 | Handle-type automatic skull drilling instrument |
| CN201775653U (en) * | 2010-09-03 | 2011-03-30 | 威海鸿宇医疗器械有限公司 | Orienting electric skull drill |
| CN202458556U (en) * | 2012-03-01 | 2012-10-03 | 刘堃 | Rapid hand-cranking skull opening drill |
| CN102990123A (en) * | 2011-09-13 | 2013-03-27 | 江苏八达重工机械有限公司 | Novel hand-powered drill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620539A (en) * | 1983-07-11 | 1986-11-04 | Andrews E Trent | Pistol grip, bone drill |
| CN87201666U (en) * | 1987-07-10 | 1988-05-04 | 姜汝明 | Geared hand-operated cranium drill |
| CH682212A5 (en) * | 1990-12-19 | 1993-08-13 | Synthes Ag | |
| ES2362475T3 (en) * | 2002-05-31 | 2011-07-06 | Vidacare Corporation | BONE MARINE ACCESS APPLIANCE. |
| US20050199407A1 (en) * | 2002-09-04 | 2005-09-15 | Aesculap Ag & Co. Kg | Surgical instrument |
| CN201558147U (en) * | 2010-01-14 | 2010-08-25 | 高建红 | Craniotomy drilling tool |
-
2013
- 2013-11-28 CN CN201310617622.4A patent/CN103750879B/en not_active Expired - Fee Related
- 2013-11-28 CN CN201510244462.2A patent/CN104825205B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29500769U1 (en) * | 1995-01-22 | 1995-04-27 | Rübben, Alexander, 52074 Aachen | Modification of a skull revision drill by mechanical consistency-dependent control and safety device |
| CN2750782Y (en) * | 2004-10-25 | 2006-01-11 | 高勇 | Hand rotated type safety skull opening bore |
| CN1729941A (en) * | 2005-08-29 | 2006-02-08 | 张庆林 | Mirco-traumatic skull drill |
| CN201414823Y (en) * | 2009-05-26 | 2010-03-03 | 金成福 | Handle-type automatic skull drilling instrument |
| CN201775653U (en) * | 2010-09-03 | 2011-03-30 | 威海鸿宇医疗器械有限公司 | Orienting electric skull drill |
| CN102990123A (en) * | 2011-09-13 | 2013-03-27 | 江苏八达重工机械有限公司 | Novel hand-powered drill |
| CN202458556U (en) * | 2012-03-01 | 2012-10-03 | 刘堃 | Rapid hand-cranking skull opening drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104825205A (en) | 2015-08-12 |
| CN104825205B (en) | 2017-01-04 |
| CN103750879A (en) | 2014-04-30 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Xiuhua Inventor after: Wei Haixia Inventor after: Lv Shouhua Inventor before: Zhang Xiuhua Inventor before: Sun Guotao Inventor before: Yi Youfeng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG XIUHUA SUN GUOTAO YI YOUFENG TO: ZHANG XIUHUA WEI HAIXIA LV SHOUHUA |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150902 Termination date: 20161128 |