CN102727978B - Laryngeal mask convenient for guiding insertion device into stomach - Google Patents
Laryngeal mask convenient for guiding insertion device into stomach Download PDFInfo
- Publication number
- CN102727978B CN102727978B CN201210256036.7A CN201210256036A CN102727978B CN 102727978 B CN102727978 B CN 102727978B CN 201210256036 A CN201210256036 A CN 201210256036A CN 102727978 B CN102727978 B CN 102727978B
- Authority
- CN
- China
- Prior art keywords
- gathering sill
- air
- main body
- tube
- guide
- Prior art date
- 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.)
- Active
Links
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a laryngeal mask convenient for guiding an insertion device into the stomach. The laryngeal mask comprises an air guide main tube with an air guide channel, a connection main body arranged at one end of the air guide main tube, an elastic sleeve bag fixed on the periphery of the connection main body and used for closing the laryngeal, and an air inflation/deflation device communicated with an inner cavity of the elastic sleeve bag, wherein the top surface of the connection main body is provided with an air outlet communicated with the air guide channel; the outer wall of the air guide main tube is provided with a first guide slot arranged along the length direction of the air guide main tube; a second guide slot is formed between the bottom surface of the connection main body and the elastic sleeve bag; and the first guide slot and the second guide slot are connected to form a channel for guiding the insertion device. Compared with the prior art, the laryngeal mask convenient for guiding an insertion device into the stomach, disclosed by the invention, has a simple overall structure; due to the first guide slot and the second guide slot, the insertion of a stomach tube or other devices is facilitated, and the abrasion of the mask bag caused by the stomach tube or other devices is reduced; and meanwhile, the size of the mask bag is not influenced by the size of the stomach tube or other devices, thus the practicability is high.
Description
Technical field
The present invention relates to a kind of laryngeal mask, specifically relate to a kind of laryngeal mask being convenient to guide inserter instrument in stomach.
Background technology
Laryngeal mask is a kind of novel medical air-breather, be applicable to anaesthetize or the patient of medicine calmness and first aid and recovery time promptly need carry out the patient of artificial ventilation's support, to ensure that the upper respiratory tract is unobstructed.Compared with conventional tracheal interpolation pipe, laryngeal mask has very outstanding advantage, such as utilize laryngeal mask, can greatly reduce because stimulating the generation coughed or cough of choking causing patient, reduce and have sore throat and alleviate postoperative nausea symptom, and insert easy to learn, be considered to recent two decades and carry out most important invention in artificial airway.
Laryngeal mask is at the use initial stage, be mainly used in artificial ventilation, such as application number be CN201020561934.X patent document discloses a kind of laryngeal mask, comprise cuff, gas tube, the charge valve that is arranged at the instruction sacculus on gas tube and is arranged in gas tube free end port, gas tube is communicated with cuff, and cuff is communicated with a breather pipe.The advantage of above-mentioned laryngeal mask is easy to positioning action.In recent years, on the basis of original structure, develop again a kind of binary channels laryngeal mask, on the basis meeting artificial ventilation, add stomach tube grafting passage.Such as, application number be CN200620025407.0 patent document discloses a kind of Double-tunnel plastic throat mask, comprise the airway that is embedded with reinforcing line in the shape of a spiral in a tube wall and far-end one in ovate inflatable cover formation, inflatable cover is communicated with airway, described inflatable cover is by air bag seat, in hollow cylindrical air bag and connected knapsack form, a food meatus parallel with airway is also designed with in inflatable cover, this food meatus one end forms food meatus outlet through knapsack and on air bag top, airway and food meatus middle part are designed with dismantled and assembled bite-block, and fix by dismantled and assembled bite-block, air bag outward flange is communicated with inflation tubule, inflation instruction capsule and check valve.The advantage of this laryngeal mask is: functionally add esophageal passages, therefore except ensureing the foundation of artificial airway, the clinical needs to discharging gastric juice and extra-nutrition can also be solved, and this laryngeal mask safety quickly can insert patient's laryngopharynx, little to the stimulation of patient when inserting, both can be used for routine operation patient, can be used as again emergency airway treating apparatus for the patient in trachea cannula experience difficulty or CPR first aid.Disclose a kind of intubating laryngeal mask airway device at patent document CN200480002616.7 in addition, this intubating laryngeal mask airway device in the insertion of auxiliary port conduit advantageously.After intubating laryngeal mask airway device inserts patient, this device is that the airway tube inserted subsequently serves guide effect.The intubating laryngeal mask airway device used by this way is helpful for " blindmate " being called as airway tube.Only need removing patient's head, neck and jaw a little just can insert intubating laryngeal mask airway device, and once after this device insertion patient, in fact do not need to carry out other movement to patient, airway tube just can be inserted into.This, with when not utilizing intubating laryngeal mask airway device auxiliary when inserting airway tube, needs the head of removing patient significantly, neck and jaw to define contrast.In addition, these devices allow to carry out one hand from the optional position of user and insert, and do not need the head from the position removing patient of centre and neck, and are not needing finger to be inserted in the mouth of patient also can place in position.Last it is believed that they are unique as suitable airway device, the oxygen supply realizing ventilation control and patient can be continued in intubation process, thus reduce the possibility of anoxic.
But owing to using the stomach tube in laryngeal mask (or claiming food meatus) all to need through cover capsule at present, cover capsule needs arrange corresponding passage, this structure causes existing laryngeal mask itself to there is following defect:
(1) structure of existing laryngeal mask is comparatively complicated, and volume is comparatively large, and the overall material of cover capsule is stiff, adds the difficulty that laryngeal mask inserts.In addition, laryngeal mask volume and hardness excessive insert time can cause patient's pharyngeal structures wound.
(2) in existing laryngeal mask, the size of gastric tube passageway and cover capsule is mutually limited, is difficult to the needs meeting different crowd.
(3) for reusable laryngeal mask, due to stomach tube Reusability, wearing and tearing can be produced to cover capsule, due to the thinner thickness of cover capsule own, usually can be galled by stomach tube, cause laryngeal mask entirety to be scrapped.
(4) in addition, stomach tube is arranged on the positioning difficulty too increasing laryngeal mask in cover capsule, usually needs repeatedly to operate, and causes secondary injury to patient.
(5) current two-tube laryngeal mask is difficult to meet the needs not only inserting stomach tube but also insert airway tube.
Summary of the invention
The invention provides a kind of laryngeal mask being convenient to guide inserter instrument in stomach, this laryngeal mask structure simplifies greatly, adopt outside stomach tube being arranged on cover capsule, avoid the mutual interference between stomach tube and cover capsule and wearing and tearing, reduce laryngeal mask positioning difficulty simultaneously, facilitate inserting of the parts such as stomach tube or other devices.
A kind ofly be convenient to the laryngeal mask guiding inserter instrument in stomach, comprise the air-guide main tube with air guide channel, be arranged on the connection main body of air-guide main tube one end, be fixed on and connect the peripheral elasticity cuff for closed throat of main body, and with the aerating and exhaust device of elasticity cuff inner space, described connection main body end face is provided with the gas outlet be communicated with described air guide channel, the outer wall of described air-guide main tube is provided with the first gathering sill arranged along air-guide main tube's length direction, the second gathering sill is formed between the bottom surface of described connection main body and elasticity cuff, described first gathering sill and the second gathering sill are connected into the passage for guiding inserter instrument.
The setting of the first gathering sill and the second gathering sill, facilitate stomach tube or or the insertion of other devices, the size of stomach tube or other device models is no longer by the restriction of cover capsule size simultaneously, save and corresponding passage is set in cover capsule, the structure of cover capsule is simplified further, reduces stomach tube or other devices to the wearing and tearing of cover capsule with insert difficulty simultaneously.Cover capsule can select inflatable cover capsule, also can select to exempt from inflatable cover capsule.When selecting inflatable cover capsule, described aerating and exhaust device comprises the gas tube inflating inner space with cover capsule and the instruction capsule being arranged on the gas tube other end and check valve.
For avoiding the position of in use laryngeal mask to be moved, a kind of preferred technical scheme is: the bottom of described elasticity cuff forms strip protuberance in the both sides connecting body floor, is the second described gathering sill between two strip protuberances.In use procedure, end face and the air flue aditus laryngis of elasticity cuff are close to, and the material preventing stomach from discharging enters air flue; Two strip protuberances of the bottom surface of elasticity cuff are against on pharynx rear wall.The setting of strip protuberance, makes the sealing of the end face of elasticity cuff strengthen further on the one hand; On the other hand, because strip protuberance is two, in use, two strip protuberances will swallow rear wall clamping, prevent laryngeal mask in use sidesway.
For ease of the processing of the first gathering sill, a kind of preferred technical scheme is: the outer wall of described air-guide main tube is provided with the guiding wing plate arranged along air-guide main tube's length direction, and described first gathering sill is positioned at the end face of this guiding wing plate.
The setting of guiding wing plate, the size that the first gathering sill is arranged is not by the restriction of air-guide main tube's size; It also avoid the first gathering sill in process, on the impact of air-guide main tube's cavity simultaneously.Be generally between guiding wing plate and air-guide main tube and be wholely set, one-step molding manufacturing.
For ease of the insertion of stomach tube or other devices, the first described gathering sill is deep-slotted chip breaker.The size that deep-slotted chip breaker is arranged needs the size of stomach tube or other devices used according to reality to determine, the width of deep-slotted chip breaker is generally greater than the maximum gauge of stomach tube or other devices, prevents stomach tube or other devices and the first gathering sill mutually stuck.The width of the first described gathering sill is 9 ~ 10mm.
Inserting stomach tube or other devices for realizing medical personnel in different angles, realizing test-and-treat more accurately, a kind of preferred scheme is: the first described gathering sill is two, is symmetricly set on the both sides of air-guide main tube.In addition, when inflatable cover capsule selected by cover capsule, the first gathering sill arranges two, also facilitates the layout of gas tube, makes the overall structure of laryngeal mask compacter.Simultaneously, when needs use stomach tube and other devices simultaneously, can adopt and stomach tube and other devices are arranged in the first different gathering sills, avoid the interference between the two of stomach tube and other devices and influence each other, improve the medical performance of laryngeal mask of the present invention.
For ensureing the smooth insertion of stomach tube or other devices, the second described gathering sill is the cell body of through cover capsule bottom surface, and now, the second described gathering sill has the entrance being positioned at cover capsule and air-guide main tube's connecting portion, and is positioned at the outlet of cover capsule front end.
For ensure stomach tube or other devices level and smooth enter the second gathering sill, as further optimal technical scheme, the inlet location of the second described gathering sill is with the flared section for accepting the first gathering sill.In stomach tube or other device insertion process, flared section plays the effect of guiding, guides stomach tube or other devices to enter in the esophagus of patient along the second gathering sill, and then enters patient's stomach.The width that flared section is arranged needs to determine according to the width of the distance between two the first gathering sills and the first gathering sill self.
For strengthening the guide effect of the second gathering sill to stomach tube or other devices further, ensure that stomach tube or other devices are inserted into the stomach of patient fast, reduce the injury to patient, be further preferably: the width of the second described gathering sill is narrowed to outlet gradually by entrance.The width of the second gathering sill outlet is generally not less than the Breadth Maximum of stomach tube or other devices.
For improving the practicality of laryngeal mask of the present invention further, described air-guide main tube and the internal diameter of gas outlet are 19 ~ 20mm.Employing changes laryngeal mask, and can insert internal diameter is 9.0mm stomach tube or other devices, overcomes the shortcoming that the internal diameter of other laryngeal mask gas passage is too small.Vent stack moulding is in advance except having ventilatory function, and it is at laryngeal mask and guide stomach tube or other device operation fashion to have guiding and fixation.It is simple to operate when guiding laryngeal mask, easy, successful intubation advantages of higher, observes providing new selection for overcome a difficulty air flue maintenance and difficult tracheal intubation and fibre optics.
When inflatable cover capsule selected by cover capsule of the present invention, multiple material can be adopted, such as silica gel or PVC material etc. can be adopted, as the preferred technical scheme of one, described elasticity cuff selects EVA material elasticity cuff, selects EVA material, further increases the pliability of elasticity cuff, improve the laminating degree of elasticity cuff and throat, avoid solid-liquid foreign material to enter tracheal strips.In addition, compared with traditional elastic, the price of EVA material own is lower, and chemical stability is better, and biodegradable, can not to environment after discarding.
As further preferred technical scheme, the weight percent content of the vinyl acetate described in described EVA material is 25-35%, now the elasticity of EVA material and pliability higher, higher with the laminating degree of throat.
Of the present inventionly be convenient to the laryngeal mask guiding inserter instrument in stomach, compared with prior art, overall structure is simple, the setting of the first gathering sill and the second gathering sill, facilitate stomach tube and or the insertion of other devices, reduce stomach tube or other devices to the wearing and tearing of cover capsule, the size of stomach tube or other devices is by the restriction of this body structure of cover capsule simultaneously, and practicality is high.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram being convenient to the laryngeal mask guiding inserter instrument in stomach of the present invention.
Fig. 2 is the structure schematic diagram being convenient to the laryngeal mask guiding inserter instrument in stomach of the present invention.
The A-A sectional view that Fig. 3 is laryngeal mask described in Fig. 2.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, a kind ofly be convenient to the laryngeal mask guiding inserter instrument in stomach, comprise the air-guide main tube 3 that is wholely set and be connected main body 14, be arranged on and connect main body 14 periphery for the elasticity cuff 15 of closed throat and the aerating and exhaust device with elasticity cuff 15 inner space, during inflation, periphery 10 and throat's inwall of elasticity cuff 15 are close to, and prevent the impurity of stomach reflux from entering in patient airway.
Be provided with air guide channel in air-guide main tube 3, internal diameter is 19 ~ 20mm, and concrete size can be determined according to actual needs.It is arranged in parallel that air-guide main tube 3 outer wall both sides are arranged with guiding wing plate 6, a two guiding wing plate 6 along air-guide main tube 3 length direction layout respectively.The section that each guiding wing plate 6 end face is respectively equipped with first gathering sill 4, first gathering sill 4 is deep-slotted chip breaker, and the groove width of the first gathering sill 4 is 9 ~ 10mm.Guiding wing plate 6 be connected main body 14 and be integrated setting, one-step molding manufacturing.
Connecting main body 14 is subtriangular plastic body, be wholely set with air-guide main tube 3, one-step molding manufacturing, connect in the middle part of main body 14 end face and be provided with the gas outlet 2 be communicated with air guide channel, the internal diameter of gas outlet 2 is 19 ~ 20mm, and actual size can be determined according to actual needs.Elasticity cuff 15 is oval, is made up of EVA material.In EVA material, the weight percent content of vinyl acetate is about 25 ~ 35%.Special glue can be adopted to carry out between elasticity cuff 15 with connection main body 14 bonding, special glue can select existing product, is prior art.
Aerating and exhaust device forms by with the gas tube 11 of elasticity cuff 15 inner space, the pilot balloon 12 be connected successively with the free end of gas tube 11 and check valve 13, and the same prior art of structure of pilot balloon 12, is used to indicate the inflated condition in cover capsule 12.Elasticity cuff 15 is connected by inlet side 18 with gas tube 11.
It is the second gathering sill 5 that the bottom of elasticity cuff 15 is formed between strip protuberance 20, two strip protuberance 20 in the both sides connecting main body 14 bottom surface.Under inflated condition, end face 21 and the air flue aditus laryngis of elasticity cuff 15 are close to, and the material preventing stomach from discharging enters air flue; Two strip protuberances 20 of the bottom surface of elasticity cuff 15 are against on pharynx rear wall.Second gathering sill 5 has the entrance 7 being positioned at and connecting main body 14 and air-guide main tube 3 connecting portion, and is positioned at the outlet 17 connecting main body 14 front end.The inlet location of the second gathering sill 5 is with the flared section for accepting the first gathering sill 4.The width of the second gathering sill 5 is narrowed gradually by entrance 7 to outlet 17.First gathering sill 4 is connected into the passage for guiding inserter instrument with the second gathering sill 5.
In present embodiment, air-guide main tube 3, connection main body 14, guiding wing plate 6 are and are wholely set, add one-shot forming in man-hour, the EVA material of certain rigidity and toughness can be adopted, in EVA material, the weight percent content of vinyl acetate is about 9 ~ 25%, adopt the EVA material of this composition, air-guide main tube be connected main body and have well moulding, and to insert conveniently.Gas tube 11 can adopt silica gel material or PVC material etc.
Being convenient to of present embodiment guides the actual use procedure of the laryngeal mask of inserter instrument to be in stomach:
Utilize existing method by the laryngeal mask with gas tube 11 to the bottleneck throat of patient, recycling gas tube 11 pairs of elasticity cuffs 15 are inflated, make the periphery 10 of elasticity cuff 15 cover aditus laryngis position completely, the gas outlet 2 connecting main body 14 faces patient's aditus laryngis.Simultaneously elasticity cuff 15 is inflated back part and is had certain altitude, and cyst wall is close to be combined in the surrounding of throat, the outlet 17 connecting main body 14 front end is attached to esophageal orifice upper wall.The path of inserting stomach tube is formed with esophagus.
Then the sizing interface 19 of inserting in air-guide main tube 3 is connected with breathing apparatus.
Finally as required stomach tube 16 is inserted in esophagus, until insert the stomach of patient along the first gathering sill 4 and the second gathering sill 5.
According to on-site actual situations, use instead band capsule airway tube to form artificial airway's path time, utilize the air guide channel of laryngeal mask just can realize airway tube " blindmate " function.
Embodiment 2
Substantially identical with structure in embodiment 1, difference is, guiding wing plate 6 is one, and be arranged on the side of air-guide main tube 3, width is about 9 ~ 10mm.And guiding wing plate 6 extends near the one end connecting main body 14 below connecting main body 14 bottom surface, strengthen the guide effect to stomach tube further.The laryngeal mask use procedure of present embodiment is with embodiment 1.
Claims (1)
1. be convenient to the laryngeal mask guiding inserter instrument in stomach for one kind, comprise the air-guide main tube (3) with air guide channel, be arranged on the connection main body (14) of air-guide main tube (3) one end, be fixed on the elasticity cuff (15) connecting main body (14) periphery and be used for closing throat, and with the aerating and exhaust device of elasticity cuff (15) inner space, described connection main body (14) end face is provided with the gas outlet (2) be communicated with described air guide channel, it is characterized in that, the outer wall of described air-guide main tube (3) is provided with the first gathering sill (4) arranged along air-guide main tube (3) length direction, the second gathering sill (5) is formed between the bottom surface of described connection main body (14) and elasticity cuff (15), described first gathering sill (4) and the second gathering sill (5) are connected into the passage for guiding inserter instrument,
The both sides that bottom is connecting main body (14) bottom surface of described elasticity cuff (15) form strip protuberance (20), are described the second gathering sill (5) between two strip protuberances;
The outer wall of described air-guide main tube (3) is provided with the guiding wing plate (6) arranged along air-guide main tube's length direction, and described first gathering sill (4) is positioned at the end face of this guiding wing plate;
Described the first gathering sill (4) is two, is symmetricly set on the both sides of air-guide main tube (3);
Described the second gathering sill (5) has the entrance (7) being positioned at and connecting main body (14) and air-guide main tube (3) connecting portion, and is positioned at the outlet (17) connecting main body (14) front end;
The inlet location of described the second gathering sill (5) is with the flared section for accepting the first gathering sill (4);
The width of described the second gathering sill (5) is narrowed to outlet (17) gradually by entrance (7);
Described air-guide main tube (3) and the internal diameter of gas outlet (2) are 19 ~ 20mm;
Described the first gathering sill (4) is deep-slotted chip breaker, and the groove width of the first gathering sill (4) is 9 ~ 10mm;
Described air-guide main tube (3), connection main body (14), guiding wing plate (6) are and are wholely set;
Described elasticity cuff (15) is made up of EVA material, and in EVA material, the weight percent content of vinyl acetate is 25 ~ 35%;
Described air-guide main tube (3), connection main body (14), guiding wing plate (6) are made up of EVA material, and in EVA material, the weight percent content of vinyl acetate is 9 ~ 25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256036.7A CN102727978B (en) | 2012-07-23 | 2012-07-23 | Laryngeal mask convenient for guiding insertion device into stomach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256036.7A CN102727978B (en) | 2012-07-23 | 2012-07-23 | Laryngeal mask convenient for guiding insertion device into stomach |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102727978A CN102727978A (en) | 2012-10-17 |
| CN102727978B true CN102727978B (en) | 2015-03-25 |
Family
ID=46984727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210256036.7A Active CN102727978B (en) | 2012-07-23 | 2012-07-23 | Laryngeal mask convenient for guiding insertion device into stomach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102727978B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202961406U (en) * | 2012-11-08 | 2013-06-05 | 天津美迪斯医疗用品有限公司 | Proseal laryngeal mask airway provided with finger stall-type auxiliary inserter |
| CN106581832B (en) * | 2016-12-22 | 2024-01-26 | 天津麦迪安医疗器械有限公司 | Open-edge type air passage for cup-type airtight tissues around laryngeal opening |
| CN110292690A (en) * | 2019-02-02 | 2019-10-01 | 长沙迈吉尔医疗科技有限公司 | Connector, laryngeal mask main body and the laryngeal mask of laryngeal mask |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2229367A (en) * | 1989-03-22 | 1990-09-26 | Archibald Ian Jeremy Brain | Artificial airway device |
| CN101057994B (en) * | 2006-06-26 | 2011-09-14 | 株式会社佐多商会 | Laryngeal mask with guiding tube used for inserting stomach tube |
| DK2195058T3 (en) * | 2007-08-30 | 2019-05-27 | Baska Meenakshi | Laryngeal mask |
| CN201161045Y (en) * | 2008-03-01 | 2008-12-10 | 刘春良 | Throat cover |
| CN201823135U (en) * | 2009-12-21 | 2011-05-11 | 陶德强 | Double chamber three channel throat cover |
| JP3159537U (en) * | 2010-02-08 | 2010-05-27 | 財團法人塑膠工業技術發展中心 | Intubation aid |
-
2012
- 2012-07-23 CN CN201210256036.7A patent/CN102727978B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102727978A (en) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201516220U (en) | Built-in obstructed type gullet drainage tube laryngeal mask airway | |
| CN1765429B (en) | Disposable laryngeal mask airway device | |
| CN201263829Y (en) | Monotube multi-cavity type ProSeal laryngeal mask airway | |
| US20080257356A1 (en) | Control tip for supraglottic airway device | |
| CN102727978B (en) | Laryngeal mask convenient for guiding insertion device into stomach | |
| CN201164641Y (en) | Trachea cannula with air sac | |
| CN202724422U (en) | Laryngeal mask convenient for guiding and inserting devices into stomach | |
| CN109999297A (en) | It is a kind of can positive airway pressure and can non-invasive intubation sound door device | |
| CN202961408U (en) | Dual-airbag laryngeal mask airway for gastrointestinal endoscopy | |
| CN201200706Y (en) | Valve type endotracheal tube | |
| CN206063525U (en) | Single cavity double sac bronchial cannula | |
| CN202859823U (en) | Multifunctional laryngeal respirator | |
| CN207342002U (en) | The tracheal catheter of variable-diameter | |
| CN206745712U (en) | A kind of intranasal esophagus blocks laryngeal mask | |
| CN201832255U (en) | Laryngeal mask for blocking esophagus | |
| CN201132002Y (en) | Oropharynx passage coping with the trachea cannula imbedding esophagus | |
| CN207012384U (en) | A kind of airway of the closed aditus laryngis surrounding tissue of Kai Bianshi cover-cup types | |
| CN208031616U (en) | Dismountable type tracheal catheter laryngeal mask set composite | |
| CN205698803U (en) | Noinvasive tracheal inserting device | |
| CN109847163B (en) | Sputum suction type trachea cannula | |
| CN201519351U (en) | Multifunctional machine for air tube with convenient freehand insertion | |
| CN201161045Y (en) | Throat cover | |
| CN206443996U (en) | Disposable two-chamber larynx cover airway tube | |
| CN106581832A (en) | Separate edge cup type air duct capable of sealing tissue around throat | |
| CN213964722U (en) | Laryngeal mask for clinical anesthesia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |