CN202961408U - Dual-airbag laryngeal mask airway for gastrointestinal endoscopy - Google Patents
Dual-airbag laryngeal mask airway for gastrointestinal endoscopy Download PDFInfo
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- CN202961408U CN202961408U CN 201220604158 CN201220604158U CN202961408U CN 202961408 U CN202961408 U CN 202961408U CN 201220604158 CN201220604158 CN 201220604158 CN 201220604158 U CN201220604158 U CN 201220604158U CN 202961408 U CN202961408 U CN 202961408U
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- breather
- laryngeal mask
- independent
- sacculus
- gas tube
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Abstract
The utility model discloses a structure of a dual-airbag laryngeal mask airway for gastrointestinal endoscopy. The structure consists of a balloon, a mask bag, an aeration pipe, an air source connector, an inflation pipe, a plug and a pressure indicator, wherein the balloon is spherical; the mask bag is oval; the aeration pipe sequentially penetrates through the balloon and the mask bag; an opening in the front end of the aeration pipe is wrapped by the balloon to form an annular air-bag buffer opening; the middle of the aeration pipe is connected with the mask bag to form a back air bag; an opening in the rear end of the aeration pipe is connected with the plug; a bypass opening in the side wall of the aeration pipe is connected with the air source connector; the side wall or the rear part of the aeration pipe is connected with the inflation pipe; and the inflation pipe is communicated with the pressure indicator. Gastroenterological endoscope enters human esophagus, stomach or intestinal tract through an independent tract inside the aeration pipe. A support table and a separation blade are arranged at a ventilation port in the middle of a laryngeal mask; and the ventilation port is communicated with a human trachea to form an airtight respiratory pathway. According to the dual-airbag laryngeal mask airway disclosed by the utility model, the gastrointestinal endoscopy can be realized while an anesthesia operation or rescue is carried out on a patient, reflux contents in the stomach are prevented from entering the airway, pains of patients are reduced and the operation safety is improved.
Description
Technical field
This utility model belongs to a kind of medical apparatus and instruments of artificial airway's ventilation, relates to a kind of intubating laryngeal mask airway, relates in particular to the two air bag intubating laryngeal mask airways of a kind of gastrointestinal endoscopy.
Background technology
Intubating laryngeal mask airway (Laryngeal mask airway, LMA) is called for short laryngeal mask, is comprised of an airway and inflatable gas hood of circle of far-end, implants it pharyngeal and inject appropriate air in gas hood, seals throat, can ventilate.It is unobstructed that laryngeal mask is conducive to maintenance air passage, and do not need special position, easy and simple to handle rapid, can race against time, and saves patient's life.Therefore laryngeal mask is set up the medical apparatus and instruments of artificial airway's ventilation as a kind of patient for surgery anesthesia, critical patient rescue or other assisted respiartion, has been widely applied and has obtained huge success in fields such as clinical anesthesia, difficult airway management and emergencies.
ProSeal laryngeal mask airway (LMA-ProSeal) is Proseal Laryngeal Mask Airway.ProSeal laryngeal mask airway be front two generation laryngeal mask (first on behalf of the standard laryngeal mask snorkel, the second Special laryngeal mask airway on behalf of guidance tracheal intubation) increased again an esophagus drainage tube on basis, to backflowing, mistake is inhaled good preventive effect, can carry ventilating mode safer, comfortable, that wound is slight, side effect is little for the patient.Proseal Laryngeal Mask Airway inherited front two generation laryngeal mask many advantages, have more simultaneously oneself characteristics, mainly contain: (1) has the design of breather and drainage tube, drainage tube can insert stomach tube drain gastric juice, prevents flatulence and the mistake of backflowing is inhaled; (2) the laryngeal mask far-end is positioned at the esophagus opening, fixes, and is difficult for displacement.Clinical research shows, use in clinical operation Proseal Laryngeal Mask Airway have advantages of simple to operate, put that the pipe success rate is high, hemodynamic stability, the induction period medication is few and complications is few, effectiveness and safety improve greatly, are easy to apply in clinical anesthesia.
Thereby the using value of ProSeal laryngeal mask airway on clinical anesthesia, receive anaesthetizing the very big concern of medical personnel and medical device industry.But the drain tract that can insert the stomach tube drain is very narrow and small, can't carry out complicated Gastrointestinal Endoscopes and detect or operation technique, becomes its weak point.In the last few years, for satisfying the needs of anesthesia surgery and gastrointestinal endoscopy development, also increasing to the research of the aspects such as improvement of ProSeal laryngeal mask airway structure.Relevant ProSeal laryngeal mask airway is reported by following patent documentation:
1, Chinese July 1 2009 CN201263829Y(Granted publication day of utility model description Granted publication) " monotube multi-cavity type ProSeal laryngeal mask airway ", disclose its structure and comprised cover capsule, breather, drainage tube and gas tube, it is characterized in that the integrated one body that is set to include ventilation tract, drain tract and inflation tract of described breather, drainage tube and gas tube; Body is fixedly connected with the cover capsule, described each tract and the venting cavity of the connection person's windpipe of the mutual isolation of the corresponding setting of cover capsule, the drainage lumens of connection human body esophagus and the inflatable chamber of connection cover capsule in body.
Its advantage: set up the tract that esophagus is communicated with atmosphere, but the balance intragastric pressure improves the equipment safety coefficient, sealing gasket agent balloon structure can form sealing in human body throat position effectively.
But its weak point: the drain tract is narrow and small, can only allow the thinner bodys such as stomach tube to pass through, although designed sealing gasket, can't seal fully esophagus, and gastric juice or gastric content may overflow, and have certain risk.
2, Chinese June 30 utility model description 2010 CN201516220U(Granted publication day of Granted publication) " built-in block type ProSeal laryngeal mask airway ", disclose its structure and comprised laryngeal mask and gullet drainage tube, the front end of described laryngeal mask is the cover capsule, the rear end is breather, an end relative with the cover capsule at breather is equipped with gas source connector, connecting gas tube on gas source connector, be connected with pressure indicator on gas tube, gas tube is built-in with the intubating laryngeal mask airway of the single-tube multiple-cavity road structure that consists of for the gullet drainage tube of esophagus drain, it is built-in with the gullet drainage tube for the esophagus drain, Front-end Design at drainage tube has the esophageal obstruction cuff.
Its advantage: have the esophageal obstruction function, when being inflated, the knapsack of intubating laryngeal mask airway can make the cover capsule rely on the displacement of trachea, improved the sealing of cover capsule, the gullet drainage tube of intubating laryngeal mask airway is free to the flexible conduction hole of coming in and going out, and is easy to update.
But its weak point is that be Split type structure with the drainage tube of esophageal obstruction cuff with the cover capsule, between have certain gap, can not guarantee fully airtight, and must two operations during operation.
3, Chinese utility model description Granted publication CN February 16 2011 201020285670.X(Granted publication day) " esophagus-blocking type double-sac laryngeal cover ", disclosed its structure and comprised: cover capsule, occlusion balloon, breather, machine end joint, gas tube, pilot balloon, Non-return air valve, relief pipe, the relief pipe joint forms, the cover capsule is oval, its front-end and back-end are respectively equipped with occlusion balloon, and its rear end connects breather, and breather one end connects a machine end joint; It is placed in relief pipe in the cover utricule, and the one end communicates with relief chamber, and the other end and relief pipe joint join, gas tube one end connects the cover capsule, the other end connects pilot balloon or pressure indicator, and the other end of pilot balloon connects Non-return air valve, and described cover capsule inner chamber and occlusion balloon inner chamber communicate.The occlusion balloon of front end can effectively prevent the esophageal reflux material.
But its weak point: although the occlusion balloon of front end can effectively prevent the esophageal reflux material, the occlusion balloon of front end has been sealed esophagus fully, can't carry out the detection of esophagus or stomach.
Therefore, the present medical device industry problem that prior art exists that needs to be resolved hurrily, and propose existing ProSeal laryngeal mask airway is carried out improved requirement, a kind of novel intubating laryngeal mask airway is developed in meanwhile expectation.
The utility model content
This utility model is intended to carry out on the basis of ProSeal laryngeal mask airway improved a kind of gastrointestinal endoscopy with two air bag intubating laryngeal mask airways, this intubating laryngeal mask airway is a kind of intubating laryngeal mask airway that can satisfy simultaneously anesthesia surgery and gastrointestinal endoscopy, it can conveniently be inserted and locate, and significantly reduce the incidence rate of backflowing and missing suction, thereby overcome the weak point that prior art exists.
This utility model for achieving the above object, the technical scheme that adopts is:
The two air bag intubating laryngeal mask airways of a kind of gastrointestinal endoscopy is characterized in that: by sacculus, and the cover capsule, breather, gas source connector, gas tube, plug and pressure indicator form, and the structure of described sacculus cover capsule and breather is as follows respectively:
Described sacculus, its contour structures is designed to spherical, elliposoidal, cylindrical, truncated cone-shaped is any shape wherein, sacculus is arranged on breather front end place, and wrap the breather front opening, one circle groove of sacculus and breather inwall front end is fitted smooth-going, the common annular air-pocket buffering opening that forms, its inside communicates by the 3rd independent tract of establishing in the perforate on the breather outer wall and breather, sacculus, breather, the common inflated path that forms an independent completion of the 1st gas tube and the 1st pressure indicator;
described cover capsule, its contour structures is designed to oval, or elliposoidal any shape wherein, cover capsule top and breather form airtight back air bag, its inside communicates by the 4th independent tract of establishing in the perforate on the breather inwall and breather, airtight bonding common formation one blow vent of lower open end and breather, and be provided with catch in open end, catch is shaped as semicircle, tongue shape, rail shape, optional wherein a kind of, the cover capsule, the 4th independent tract in breather, the common cover capsule gas fill port that forms an independent completion of the 2nd gas tube and the 2nd pressure indicator,
described breather, for being the multi-cavity road body of 100 °～180 ° of arcs, successively through sacculus and cover capsule, its inside is provided with separate separately a plurality of independent tract, its front end is provided with a front opening, the inwall of its intermediate openings is provided with brace table, its rear end is provided with an open rearward end, open rearward end is connected with a dismountable plug, the breather sidewall is provided with a bypass channel opening and closely is connected with gas source connector, its sidewall rearward end is provided with gas tube, described gas tube is designed to the 1st gas tube and the 2nd gas tube, described the 1st gas tube and the 2nd gas tube, be connected with the 2nd pressure indicator with the 1st pressure indicator that pressure indicator is designed to respectively.
Described independent tract, be designed to 2～8 independent tracts that connect, the 1st independent tract that Gastrointestinal Endoscopes is designed to 5mm ~ 20mm by internal diameter enters human body esophagus and gastrointestinal section, being positioned at the 2nd independent tract that the breather sidewall is provided with a branch is connected with gas source connector, and be connected with respirator or anesthetic machine, communicate with person's windpipe by the blow vent in the middle part of breather, form airtight breathing path.
The two air bag intubating laryngeal mask airways of described gastrointestinal endoscopy, its material is medical grade silicon rubber or medical plastic cement.
In this utility model, described pair of air bag is respectively sacculus and cover capsule.
Beneficial effect
The beneficial effects of the utility model are: when 1, this utility model can be realized carrying out anesthesia surgery, the patient is carried out gastrointestinal endoscopy, operator need not any supplementary means and can insert under patient's nature position.2, the anaesthetist also can insert a drainage stomach tube in patient's esophagus by this utility model, and the material that will backflow is drawn.3, the sacculus of this utility model front end can effectively seal patient's esophagus, prevents from that in operation process, the gastric material backflows to enter patient airway, improves operation safety.
Description of drawings
Fig. 1 is the front view of this utility model structure;
Fig. 2 is the front view of the breather in Fig. 1;
Fig. 3 is the truncation surface cutaway view of the breather in Fig. 1;
Fig. 4 is this utility model user mode schematic diagram on human body.
In Fig. 1: 1 sacculus; 2 cover capsules; 3 breathers; 4 gas source connectors; 5 gas tubes, the 5-1 gas tube, the 5-2 gas tube; 6 plugs; 7 pressure indicators, 7-1 pressure indicator, 7-2 pressure indicator.
In Fig. 2: 3 breathers; The 3-5 front opening; The 3-6 intermediate openings; The 3-7 open rearward end; The 3-8 brace table.
In Fig. 3: 3 breathers; 3-1; 3-2; 3-3; 3-4 independence tract.
In Fig. 4: 1 sacculus; 2 cover capsules; 3 breathers; 4 gas source connectors; 5 gas tubes; 6 plugs; 7 pressure indicators; 8 Gastrointestinal Endoscopes.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, scheme of the present utility model is described in further detail.
Embodiment 1:
As depicted in figs. 1 and 2, a kind of gastrointestinal endoscopy by sacculus 1, covers capsule 2 with two air bag intubating laryngeal mask airways, breather 3, and gas source connector 4, gas tube 5, plug 6 and pressure indicator 7 form, described sacculus 1, the structure of cover capsule 2 and breather 3 is as follows respectively:
described sacculus 1, its contour structures is designed to spherical, elliposoidal, cylindrical, truncated cone-shaped is any shape wherein, the present embodiment is designed to spherical, sacculus 1 is arranged on breather 3 front end places, and wrap breather 3 front opening 3-5, sacculus 1 is fitted smooth-going with a circle groove of breather 3 inwall front ends, the common annular air-pocket buffering opening that forms, its inside communicates by the 3rd independent tract 3-3 that establishes in the perforate on breather 3 outer walls and breather 3, sacculus 1, breather 3, the common inflated path that forms an independent completion of the 1st gas tube 5-1 and the 1st pressure indicator 7-1,
described cover capsule 2, its contour structures is designed to oval, or elliposoidal any shape wherein, the present embodiment is designed to oval, cover capsule 2 tops and breather 3 form airtight back air bag, its inside communicates by the 4th independent tract 3-4 that establishes in the perforate on breather 3 inwalls and breather 3, the airtight bonding common formation one blow vent 2-2 of lower open end and breather 3, and be provided with catch 2-1 in open end, catch 2-1 shape is designed to semicircle, tongue shape, barrier shape, the present embodiment is designed to semicircle, cover capsule 2, the 4th independent tract 3-4 in breather 3, the common cover capsule gas fill port that forms an independent completion of the 2nd gas tube 5-2 and the 2nd pressure indicator 7-2,
described breather 3, for being the multi-cavity road body of 100 °～180 ° of arcs, the present embodiment is designed to the multi-cavity road body of 120 ° of arcs, successively through sacculus 1 and cover capsule 2, its inside is provided with separate separately a plurality of independent tract, its front end is provided with a front opening 3-5, the inwall of its intermediate openings 3-6 is provided with brace table 3-8, its rear end is provided with an open rearward end 3-7, open rearward end 3-7 is connected with a dismountable plug 6, breather 3 sidewalls are provided with a bypass channel opening and closely are connected with gas source connector 4, its sidewall rearward end is provided with gas tube 5, described gas tube 5 is designed to the 1st gas tube 5-1 the 2nd gas tube 5-2, described the 1st gas tube 5-1 and the 2nd gas tube 5-2, be connected with the 2nd pressure indicator 7-2 with the 1st pressure indicator 7-1 that pressure indicator 7 is designed to respectively.
As shown in Figure 3 and Figure 4, described independent tract, be designed to 2～8 independent tracts that connect, the present embodiment is designed to 5 independent tracts, the 1st independent tract 3-1 that Gastrointestinal Endoscopes 8 is designed to 15mm by internal diameter enters human body esophagus and gastrointestinal section, is positioned at the 2nd independent tract 3-2 that breather 3 sidewalls are provided with a branch and is connected with gas source connector 4, and be connected with respirator or anesthetic machine, blow vent by breather 3 middle parts communicates with person's windpipe, forms airtight breathing path.
The two air bag intubating laryngeal mask airways of described gastrointestinal endoscopy, its material is medical grade silicon rubber or medical plastic cement, the present embodiment is designed to medical grade silicon rubber.
Application process:
This utility model operates use by the anaesthetist who was subjected to professional training or clinical nurse.Operating process, as shown in Figure 4:
1, before insertion, syringe nozzle is inserted the syringe interface that is connected with 7-2 with the 2nd pressure indicator 7-1 with the 1st, find time fully sacculus 1 with cover capsule 2, airbag wall is close to each other, in order to easily enter patient's pharyngolaryngeal cavity with smaller size smaller.
2, be applied in sacculus 1 and cover capsule 2 with water miscible lubricant before the insertion laryngeal mask.
3, the anaesthetist grips breather 3, and sacculus 1 is inserted the oral cavity along hard palate, will cover capsule 2 openings and aim at the patient airway mouth, and sacculus 1 enters esophageal orifice.Respectively to the 1st and the 2nd pressure indicator 7-1 and 7-2 inflation, sacculus 1 and cover capsule 2 are filled up with syringe.
4, respiratory organ is connected on laryngeal mask gas source connector 4, opens plug 6 with the 1st independent tract 3-1 insertion patient stomach of Gastrointestinal Endoscopes 8 by breather 3, carry out gastrointestinal endoscopy.
5, after inspection or operation are completed, extract Gastrointestinal Endoscopes 8 out, from the 1st and the 2nd pressure indicator 7-1 and the emptying sacculus 1 of 7-2 insertion syringe with after covering capsule 2, gastrointestinal endoscopy is pulled out with two air bag intubating laryngeal mask airways.
The above is only preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (3)
1. a gastrointestinal endoscopy is with two air bag intubating laryngeal mask airways, it is characterized in that: by sacculus (1), cover capsule (2), breather (3), gas source connector (4), gas tube (5), plug (6) and pressure indicator (7) form, described sacculus (1), the structure of cover capsule (2) and breather (3) is as follows respectively:
described sacculus (1), its contour structures is designed to spherical, elliposoidal, cylindrical, truncated cone-shaped is any shape wherein, sacculus (1) is arranged on breather (3) front end place, and wrap breather (3) front opening (3-5), sacculus (1) is fitted smooth-going with a circle groove of breather (3) inwall front end, the common annular air-pocket buffering opening that forms, it is inner communicates by the 3rd independent tract (3-3) of establishing in the perforate on breather (3) outer wall and breather (3), sacculus (1), breather (3), the 1st gas tube (5-1) and the 1st pressure indicator (7-1) form the inflated path of an independent completion jointly,
described cover capsule (2), its contour structures is designed to oval, or elliposoidal any shape wherein, cover capsule (2) top and breather (3) form airtight back air bag, it is inner communicates by the 4th independent tract (3-4) of establishing in the perforate on breather (3) inwall and breather (3), airtight bonding common formation one blow vent of lower open end and breather (3) (2-2), and be provided with catch (2-1) in open end, catch (2-1) is shaped as semicircle, tongue shape, rail shape, optional wherein a kind of, cover capsule (2), the 4th independent tract (3-4) in breather (3), the 2nd gas tube (5-2) and the 2nd pressure indicator (7-2) form the cover capsule gas fill port of an independent completion jointly,
described breather (3), for being the multi-cavity road body of 100 °～180 ° of arcs, successively through sacculus (1) and cover capsule (2), its inside is provided with separate separately a plurality of independent tract, its front end is provided with a front opening (3-5), the inwall of its intermediate openings (3-6) is provided with brace table (3-8), its rear end is provided with an open rearward end (3-7), open rearward end (3-7) is connected with a dismountable plug (6), breather (3) sidewall is provided with a bypass channel opening and closely is connected with gas source connector (4), its sidewall rearward end is provided with gas tube (5), described gas tube (5) is designed to the 1st gas tube (5-1) and the 2nd gas tube (5-2), described the 1st gas tube (5-1) and the 2nd gas tube (5-2), be connected with the 2nd pressure indicator (7-2) with the 1st pressure indicator (7-1) that pressure indicator (7) is designed to respectively.
According to claim 1 gastrointestinal endoscopy with two air bag intubating laryngeal mask airways, it is characterized in that: described independent tract, be designed to 2～8 independent tracts that connect, the 1st independent tract (3-1) that Gastrointestinal Endoscopes (8) is designed to 5mm ~ 20mm by internal diameter enters human body esophagus and gastrointestinal section, being positioned at the 2nd independent tract (3-2) that breather (3) sidewall is provided with a branch is connected with gas source connector (4), and be connected with respirator or anesthetic machine, communicate with person's windpipe by the blow vent in the middle part of breather (3), form airtight breathing path.
3. gastrointestinal endoscopy with two air bag intubating laryngeal mask airways, is characterized in that according to claim 1: described gastrointestinal endoscopy is with two air bag intubating laryngeal mask airways, and its material is medical grade silicon rubber or medical plastic cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604158 CN202961408U (en) | 2012-11-14 | 2012-11-14 | Dual-airbag laryngeal mask airway for gastrointestinal endoscopy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220604158 CN202961408U (en) | 2012-11-14 | 2012-11-14 | Dual-airbag laryngeal mask airway for gastrointestinal endoscopy |
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| Publication Number | Publication Date |
|---|---|
| CN202961408U true CN202961408U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220604158 Expired - Lifetime CN202961408U (en) | 2012-11-14 | 2012-11-14 | Dual-airbag laryngeal mask airway for gastrointestinal endoscopy |
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| Country | Link |
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| CN (1) | CN202961408U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921083A (en) * | 2012-11-14 | 2013-02-13 | 邹德伟 | Double-balloon laryngeal mask airway for gastroenterological endoscope examination |
| WO2018144825A1 (en) * | 2017-02-06 | 2018-08-09 | Durkin David James | The courier airway device |
| CN110584581A (en) * | 2013-08-15 | 2019-12-20 | 泰利福生命科学无限责任公司 | Endoscope device |
| CN114306853A (en) * | 2022-02-11 | 2022-04-12 | 康艾德(广州)医疗科技有限公司 | Laryngeal mask airway with pressure indication function and using method thereof |
-
2012
- 2012-11-14 CN CN 201220604158 patent/CN202961408U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921083A (en) * | 2012-11-14 | 2013-02-13 | 邹德伟 | Double-balloon laryngeal mask airway for gastroenterological endoscope examination |
| CN110584581A (en) * | 2013-08-15 | 2019-12-20 | 泰利福生命科学无限责任公司 | Endoscope device |
| WO2018144825A1 (en) * | 2017-02-06 | 2018-08-09 | Durkin David James | The courier airway device |
| US10821248B2 (en) | 2017-02-06 | 2020-11-03 | David James Durkin | Courier airway device |
| CN114306853A (en) * | 2022-02-11 | 2022-04-12 | 康艾德(广州)医疗科技有限公司 | Laryngeal mask airway with pressure indication function and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZOU DEWEI Effective date: 20131016 Owner name: ZUO MINGZHANG Free format text: FORMER OWNER: ZOU DEWEI Effective date: 20131016 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300385 XIQING, TIANJIN TO: 100005 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131016 Address after: 100005 No. 3, building 7, No. 605 East Lane, Beijing, Dongcheng District Patentee after: Zuo Mingzhang Patentee after: Zou Dewei Address before: 300385 Tianjin City Development Zone, Xiqing, Hong Yuan Road, No. 12, industrial park, 10A Patentee before: Zou Dewei |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171226 Address after: 300385 Tianjin 11-A industrial building, Xiqing economic and Technological Development Zone Hongyuan 12 Industrial Park Patentee after: Daqing medical equipment (Tianjin) Co.,Ltd. Address before: 100005 No. 3, building 7, No. 605 East Lane, Beijing, Dongcheng District Co-patentee before: Zou Dewei Patentee before: Zuo Mingzhang |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |