CN105597221A - Visual paranasal sinus balloon dilatation device - Google Patents
Visual paranasal sinus balloon dilatation device Download PDFInfo
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- CN105597221A CN105597221A CN201510953395.1A CN201510953395A CN105597221A CN 105597221 A CN105597221 A CN 105597221A CN 201510953395 A CN201510953395 A CN 201510953395A CN 105597221 A CN105597221 A CN 105597221A
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- nasal sinus
- visual
- balloon dilatation
- mirror
- dilatation catheter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
- A61M29/02—Dilators made of swellable material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
- A61M29/02—Dilators made of swellable material
- A61M2029/025—Dilators made of swellable material characterised by the guiding element
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- General Health & Medical Sciences (AREA)
- Biophysics (AREA)
- Child & Adolescent Psychology (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Endoscopes (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a visual paranasal sinus balloon dilatation device. The device comprises a sinoscope with the front end bendable and a dilatation balloon sleeve with a double-layer structure, wherein the front section of the sinoscope is sleeved with the dilatation balloon sleeve, an uninflated balloon body is arranged at the front end of the dilatation balloon sleeve, and a liquid injection port is formed in the rear end of the dilatation balloon sleeve and communicated with the balloon body through a channel arranged in the dilatation balloon sleeve; the intubation position is visible when a dilatation balloon is placed in, the situation that a patient is hurt from blind intubation to bleed is avoided, the dilatation balloon can be placed in the position to be dilatated accurately and quickly, operation efficiency is guaranteed, harm to the patient is reduced, reutilization can be achieved, the structure is simple, and cost is low.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to a kind of visual nasal sinus balloon dilatation catheter.
Background technology
Nasosinusitis is medically belonging to ear-nose-throat department, is the high illness of a kind of incidence of disease, adopts hand in the pastArt cannot be completely recovered, and easily recurs in treatment later patient, in recent years, medically adopts nasal sinus holeMouthful balloon dilatation has been obtained good result for the treatment of, its principle be can bearing certain pressure full ballCapsule is placed in nasal sinus mouth to be opened, and makes that sacculus is full to expand by filling liquid, thus to hole mouth structure exert pressure,Expansion, inelastic bone structure fracture. Displacement, the mucous membrane tissue pressurized of flexible retraction force, plastotype,Thereby the object that reaches expansion nasal sinus Dou Kou, reaches Wicresoft truly; And in prior art, conventionallySacculus be disposable use and expensive, in when operation, under the guiding of the nose scope by hard, insertSacculus, dilating sacculus being placed in while needing extension mouth to spacing due to nasal sinus internal environment, often causesDoctor needs blindmate dilating sacculus, easily cause patient to be inserted bleeding blood, and it is higher correctly to insert difficulty,Impact operation efficiency.
Therefore, for overcoming the above problems, need a kind of visual nasal sinus balloon dilatation catheter, can insert expansionWhen ball, can there is visual function to insertion position, avoid blindmate and cause patient to be inserted bleeding blood, ensure to expandOpen sacculus and insert accurately and rapidly by expansion position, ensure operation efficiency, reduce the injury to patient, andCan reuse, simple in structure, cost is lower.
Summary of the invention
In view of this, the object of the invention is to overcome defect of the prior art, provide visual nasal sinus sacculus to expandProp, can, inserting expansion when ball, can have visual function to insertion position, avoids blindmate and causes diseasePeople is inserted bleeding blood, and guarantee dilating sacculus is inserted accurately and rapidly by expansion position, ensures operation efficiency, subtractsThe little injury to patient, and can reuse, simple in structure, cost is lower.
Visual nasal sinus balloon dilatation catheter of the present invention, comprises nasal sinus mirror and the double-deck expansion of bendable front endSacculus cover, described dilating sacculus cover is coated at the leading portion of nasal sinus mirror and dilating sacculus cover front end and is provided with and does not fillThe sacculus body being full of, dilating sacculus cover rear end is provided with liquid injection port, logical between described liquid injection port and sacculus bodyCross the passage conducting being arranged in dilating sacculus cover.
Further, described flexible nasal sinus mirror comprises handle body and the mirror bar that is installed on handle body front endAssembly, described mirror bar assembly comprises the flexible support post that is placed on mirror sheath in mirror sheath and coaxial rotation cooperation, described inIn flexible support post, be provided with observing system, the observation window of described observing system is fixedly installed on flexible support postFront end face, the front lens laminating of the object lens of observing system is fixed on to observe and is looked into window; In described mirror sheath comprisesThe outer tube of managing and be coated at inner tube, described inner tube is provided with flexible stretch section near front end, described outer tubeFront-end driven is connected in inner tube lateral wall, and outer tube moves vertically and drives described bullet under the effect of driving forceThe bending of property section is placed on the flexible support post bending of mirror sheath simultaneously in making, described sacculus body is arranged at elasticityThe front end of section is also fixedly connected with outer wall of inner tube.
Further, the mounting hole of two radial symmetric is set vertically near front end place in described inner tube, described inIn the middle of the aft bulkhead in two waist holes, be all recessed to form backward the rectangular mouth of two radial symmetric, two rectangular mouthfulTail end is communicated with by a semicircular opening along the circumferential direction arranging, and described semicircular opening fore-end is vertically bulletThe drive division of property section, the front end inner circle of described outer tube is fixedly connected with drive division, and described stretch section is positioned at kidney-shapedHole pars intermedia vertically.
Further, also comprise and be arranged at handle body front end for controlling the adjusting part of inner tube angle of bend,Described adjusting part comprises the actuating sleeve that is circumferentially rotationally connected with outer tube axial limiting and is fixedly connected with inner tubeFixed cover, the rear end inner circle of described actuating sleeve is threaded and drives by rotation with the front end cylindrical of fixed coverMoving cover makes outer tube and the axial relative motion of inner tube.
Further, described outer tube back-end overcoat is fixedly installed adapter sleeve, and it is recessed that the outer wall of adapter sleeve is provided with annularGroove; The front end inner circle of described actuating sleeve is provided with driving boss, and described driving boss radially embeds described ringConnected in star.
Further, the front end face of described flexible support post be relative central axis be obliquely installed inclined-plane; InstituteState observation window and comprise the first observation window and the second observation window, described the first observation window is arranged at the centre bit on inclined-planePut and be fixedly installed perpendicular to the central axis of flexible support post, described the second observation window is parallel to described inclined-planeBe fixedly installed.
Further, described inclined-plane is provided with illumination mouthful, in described illumination mouth, lighting source is set.
Further, in described flexible support post, be provided with vertically water spray passage and suction channel, described inclined-planeOn be provided with and water jet and the pump orifice of the corresponding connection of passage and suction channel of spraying water.
Further, in described suction channel, being provided with front port can slide axially and pass the suction hose of pump orifice.
Further, looking of described pump orifice, first window and Second Window three conllinear setting and Second WindowAngle can be observed the suction hose stretching out from pump orifice.
The invention has the beneficial effects as follows: the visual nasal sinus balloon dilatation catheter of one disclosed by the invention, by expandingThe interlude of sacculus cover is made up of Double-layer flexible material that can anti-high pressure, forms fluid injection logical between double-deckerRoad, described sacculus body is made up of thinner outer and thicker internal layer, and internal layer is coated at flexible nasal sinus mirrorFront end and stretch into and arrive by expansion place with the bending of nasal sinus mirror, utilize priming device to be communicated with liquid injection port and rightThe fluid injection of sacculus body is expanded, and owing to stretching into process visualization, avoid blindmate and cause patient to be inserted bleeding blood,Guarantee dilating sacculus is inserted accurately and rapidly by expansion position, ensures operation efficiency, reduces the injury to patient,And can reuse, simple in structure, cost is lower.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of dilating sacculus cover in the present invention;
Fig. 3 is the structural representation of nasal sinus mirror in the present invention;
Fig. 4 is the structural representation that in the present invention, inner and outer tubes coordinate;
Fig. 5 is structural representation when nasal sinus mirror leading portion stretches in the present invention;
Fig. 6 is the cutaway view of median sinus mirror bend of the present invention;
Fig. 7 is the structural representation of inner tube in the present invention;
Fig. 8 is the structural representation of driven unit in the present invention;
Fig. 9 is the front end face view of flexible support post in the present invention
Detailed description of the invention
Fig. 1 is structural representation of the present invention, and Fig. 2 is the structural representation of dilating sacculus cover in the present invention, Fig. 3For the structural representation of nasal sinus mirror in the present invention, Fig. 4 is the structural representation that in the present invention, inner and outer tubes coordinateFigure, Fig. 5 is structural representation when nasal sinus mirror leading portion stretches in the present invention, Fig. 6 is median sinus mirror of the present invention bendingThe cutaway view of portion, Fig. 7 is the structural representation of inner tube in the present invention, Fig. 8 is the knot of driven unit in the present inventionStructure schematic diagram, Fig. 9 is the front end face view of flexible support post in the present invention, as shown in the figure, in the present embodimentVisual nasal sinus balloon dilatation catheter, comprises that the nasal sinus mirror of bendable front end and double-deck dilating sacculus overlap 11,Leading portion and dilating sacculus cover front end that described dilating sacculus cover is coated at nasal sinus mirror are provided with not full sacculus originallyBody 12, dilating sacculus overlaps 11 rear ends and is provided with liquid injection port 13, between described liquid injection port and sacculus body by establishingBe placed in passage 14 conductings in dilating sacculus cover; Described sacculus body 12 can adopt existing with dilating sacculus cover 11One-body molded or sealing be adhesively fixed after conducting; The bilayer by can anti-high pressure of described dilating sacculus cover 12 is softProperty material composition, double-deck interlayer forms reservoir channel 14, described sacculus body by thinner skin andThicker internal layer composition, described internal layer can be adhesively fixed with the outer wall of inner tube of nasal sinus mirror, the front and back of sacculus bodyEnd also can adopt the front and back end of confinement ring restriction sacculus body to be radially subject to internal pressure deformation; Described sacculus bodyInternal layer be coated at the front end (bending leading portion) of flexible nasal sinus mirror and stretch into arrival quilt with the bending of nasal sinus mirrorExpansion place, utilizes priming device to be communicated with liquid injection port and the fluid injection of sacculus body is expanded, because the process of stretching into canDepending on change, avoid blindmate and cause patient to be inserted bleeding blood, ensureing that dilating sacculus is inserted is accurately and rapidly expandedZhang Wei, ensures operation efficiency, reduces the injury to patient, and can reuse, simple in structure, costLower; Described priming device and sacculus body are prior art, do not repeat them here.
In the present embodiment, described nasal sinus mirror comprises handle body 2 and is installed on the mirror bar of handle body 2 front endsAssembly, described mirror bar assembly comprises the flexible support post 3 that is placed on mirror sheath in mirror sheath and coaxial rotation cooperation, instituteState in flexible support post 3 and be provided with observing system, the observation window of described observing system is fixedly installed on flexibleThe front end face 31 of dagger 3, the front lens laminating of the object lens of observing system is fixed on to observe and is looked into window; Described sightThe system of examining also comprises that front end is provided with the conduction optical fiber of front lens, is provided with use in described flexible support post 3In install conduction optical fiber optical-fibre channel, conduction optical fiber rear end with for showing the demonstration of realtime graphic in nasal sinusSystem connects, and display system is prior art, does not repeat them here; Described mirror sheath comprises inner tube 41 and overcoatIn the outer tube 42 of inner tube 41, described inner tube 41 is provided with flexible stretch section 43 near front end, described outsideManage 42 front-end driven and be connected in inner tube 41 lateral walls, outer tube 42 moves also vertically under the effect of driving forceDrive described stretch section 43 bendings, in making, be placed on flexible support post 3 bendings of mirror sheath simultaneously; Described inner tubeThe front and back that are positioned at stretch section 43 on 41 are all stereoplasm tube, the fixed form of described inner tube 41 and stretch section 43Can adopt of the prior art one-body molded fixingly or weld fixingly, by controlling outer tube 42 axially-movables, makeObtain outer tube 42 and drive inner tube 41 to bend at stretch section 43, facilitate the insertion after the bending of nasal sinus mirror, therewithMeanwhile, the inclined-plane that the front end face 31 of described flexible support post 3 can be obliquely installed for relative central axis, willThe front end face 31 of flexible support post 3 is set to inclined-plane, can under external force drives, make flexible support post 3 around selfCentral axis rotates, and increases visual range; Whole nasal sinus mirror is simple in structure, easy to operate, good stability,With low cost, be easy to promote.
In the present embodiment, the mounting hole of two radial symmetric is set vertically near front end place in described inner tube 4141a, the middle rectangular mouthful of 41b that is all recessed to form backward two radial symmetric of aft bulkhead in described two waist holes,The tail end of two rectangular mouthful of 41b is communicated with by a semicircular opening 41c who along the circumferential direction arranges, described semicircular opening41c fore-end is vertically the drive division 43a of stretch section 43, the front end inner circle of described outer tube 42 with driveThe moving 43a of portion is fixedly connected with, and described stretch section 43 is positioned at mounting hole 41a pars intermedia vertically; Outer tube 42When axially-movable, drive and go drive division 43a axially-movable, and then stretch section 43 is bent, and due toThe support of flexible support post 3, bending driving is stable and smooth, and it is convenient to ensure to drive.
In the present embodiment, also comprise and be arranged at handle body 2 front ends for controlling the tune of inner tube 41 angle of bendJoint assembly, described adjusting part comprises actuating sleeve 51 Hes that are circumferentially rotationally connected with outer tube 42 axial limitingsThe fixed cover 52 being fixedly connected with inner tube 41, before the rear end inner circle of described actuating sleeve 51 and fixed cover 52End cylindrical is threaded and overlaps 51 by rotary actuation and makes outer tube 42 and the axial relative motion of inner tube 41, shown inFixed cover 52 is fixedly connected with handle body 2; As shown in the figure, by actuating sleeve 51 and fixed cover 52 screw threadsCoordinate, make to drive convenient and control stable.
In the present embodiment, described outer tube 42 rear end overcoats are fixedly installed adapter sleeve 53, outside adapter sleeve 53Wall is provided with annular groove; The front end inner circle of described actuating sleeve 51 is provided with and drives boss 51a, and described driving is protrudingPlatform 51a radially embeds described annular groove 53a; Coordinate with driving boss 51a by annular groove 53aComplete axial driving outer tube 42, simple in structure, easy to assembly.
In the present embodiment, described observation window comprises the first observation window 61 and the second observation window 62, described firstObservation window 61 is arranged at the center on inclined-plane and is fixedly installed perpendicular to the central axis of flexible support post 3,Described the second observation window 62 is parallel to described inclined-plane and is fixedly installed; By two observation windows are set, flexibleIn dagger, just there are two optical-fibre channels, in display system, present double screen and show, after described flexible support post 3End can expose to handle body 2 and can rotate by hand and make it can be around self central axis reciprocating rotary, and logicalThe setting of crossing the first observation window 61 can ensure that the visual field of the first observation window 61 is constant, and the second observation window 62Visual field rotate, ensure that display frame has the effect of three-dimensional view, facilitates doctor to operate.
In the present embodiment, described inclined-plane is provided with illumination mouth 63, the described illumination mouthful 63 interior lighting sources that arrange;In described flexible support post 3, be provided with the illumination passage for holding lighting fiber, described lighting fiber front endForm lighting source, the light sending for external light source behind rear end; Ensure visual field light by lighting source.
In the present embodiment, receive to state and in flexible support post 3, be provided with vertically water spray passage and suction channel,On described inclined-plane, be provided with water jet 64 and pump orifice 65 with the corresponding connection of passage and suction channel of spraying water;By described water spray passage and suction channel, can nasal sinus internal chamber wall be washed away saline injection, and canFall inner chamber fester by pump orifice 65 suctions, avoid operation cleaning, reduce grieved.
In the present embodiment, in described suction channel, be provided with front port and can slide axially and pass the suction of pump orifice 65Flexible pipe 65a; By the setting of suction hose 65a is set, can facilitate suction hose 65a to move and closelySuction fester, ensures pumping efficiency and suction thoroughly; Certainly suction tube tail end is connected with suction pump, suction pumpFor prior art, do not repeat them here.
In the present embodiment, described pump orifice 65, the first observation window and the second observation window three conllinear arrange and theThe visual angle of two observation windows can be observed the suction hose 65a stretching out from pump orifice 65; By by the second observation windowVisual angle be set to can be observed the suction hose 65a stretching out from pump orifice 65, facilitate doctor to operate, improveOperation efficiency.
Finally explanation, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, althoughWith reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art should be appreciated thatCan modify or be equal to replacement technical scheme of the present invention, and not depart from technical solution of the present inventionAim and scope, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a visual nasal sinus balloon dilatation catheter, is characterized in that: comprise that the nasal sinus mirror of bendable front end is with twoThe dilating sacculus cover of layer structure, described dilating sacculus cover is coated at leading portion and the dilating sacculus cover front end of nasal sinus mirrorBe provided with not full sacculus body, dilating sacculus cover rear end is provided with liquid injection port, described liquid injection port and sacculusBetween body by being arranged at the passage conducting in dilating sacculus cover.
2. visual nasal sinus balloon dilatation catheter according to claim 1, is characterized in that: described flexibleNasal sinus mirror comprise handle body and be installed on the mirror bar assembly of handle body front end, described mirror bar assembly comprisesMirror sheath and coaxial rotation are placed on the flexible support post of mirror sheath in coordinating, in described flexible support post, be provided with observationSystem, the observation window of described observing system is fixedly installed on the front end face of flexible support post, the thing of observing systemThe front lens laminating of mirror is fixed on to observe and is looked into window; Described mirror sheath comprises inner tube and the outer tube that is coated at inner tube,Described inner tube is provided with flexible stretch section near front end, and described outer tube front-end driven is connected in inner tube outsideWall, outer tube moves vertically and drives described stretch section bending under the effect of driving force, makes inner sleeve simultaneouslyIn the flexible support post bending of mirror sheath, described sacculus body is arranged at the front end of stretch section solid with outer wall of inner tubeFixed connection.
3. visual nasal sinus balloon dilatation catheter according to claim 2, is characterized in that: in described inner tubeThe mounting hole of two radial symmetric is set vertically near front end place, equal in the middle of the aft bulkhead in described two waist holesThe rectangular mouth that is recessed to form backward two radial symmetric, the tail end of two rectangular mouthful is along the circumferential direction established by oneThe semicircular opening of putting is communicated with, the drive division that described semicircular opening fore-end is vertically stretch section, described outer tubeFront end inner circle be fixedly connected with drive division, described stretch section is positioned at mounting hole pars intermedia vertically.
4. visual nasal sinus balloon dilatation catheter according to claim 3, is characterized in that: also comprise settingIn handle body front end, for controlling the adjusting part of inner tube angle of bend, described adjusting part comprises and outer tubeAxial limiting and the actuating sleeve being circumferentially rotationally connected and the fixed cover being fixedly connected with inner tube, described actuating sleeveRear end inner circle is threaded with the front end cylindrical of fixed cover and is overlapped and made outer tube and the axial phase of inner tube by rotary actuationTo motion.
5. visual nasal sinus balloon dilatation catheter according to claim 4, is characterized in that: after described outer tubeEnd overcoat is fixedly installed adapter sleeve, and the outer wall of adapter sleeve is provided with annular groove; In the front end of described actuating sleeveCircle is provided with driving boss, and described driving boss radially embeds described annular groove.
6. visual nasal sinus balloon dilatation catheter according to claim 5, is characterized in that: described flexibility is propped upThe front end face of dagger be relative central axis be obliquely installed inclined-plane; Described observation window comprises the first observation windowWith the second observation window, described the first observation window is arranged at the center on inclined-plane and perpendicular to flexible support postCentral axis is fixedly installed, and described the second observation window is parallel to described inclined-plane and is fixedly installed.
7. visual nasal sinus balloon dilatation catheter according to claim 6, is characterized in that: described inclined-plane is establishedBe equipped with illumination mouthful, in described illumination mouth, lighting source be set.
8. visual nasal sinus balloon dilatation catheter according to claim 7, is characterized in that: described flexibility is propped upIn dagger, be provided with vertically water spray passage and suction channel, on described inclined-plane, be provided with and spray water passage and taking outInhale corresponding water jet and the pump orifice being communicated with of passage.
9. visual nasal sinus balloon dilatation catheter according to claim 8, is characterized in that: described suction is logicalIn road, being provided with front port can slide axially and pass the suction hose of pump orifice.
10. visual nasal sinus balloon dilatation catheter according to claim 9, is characterized in that: described pump orifice,The visual angle of first window and Second Window three conllinear setting and Second Window can be observed stretches out from pump orificeSuction hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510953395.1A CN105597221B (en) | 2015-12-17 | 2015-12-17 | Visual nasal sinus balloon dilatation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510953395.1A CN105597221B (en) | 2015-12-17 | 2015-12-17 | Visual nasal sinus balloon dilatation catheter |
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| Publication Number | Publication Date |
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| CN105597221A true CN105597221A (en) | 2016-05-25 |
| CN105597221B CN105597221B (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510953395.1A Active CN105597221B (en) | 2015-12-17 | 2015-12-17 | Visual nasal sinus balloon dilatation catheter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933377A (en) * | 2021-01-21 | 2021-06-11 | 温州医科大学附属第一医院 | Cricopharyngeal muscle dysfunction rehabilitation training device |
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| JP2003310534A (en) * | 2002-04-24 | 2003-11-05 | Pentax Corp | Endoscope |
| WO2007010208A1 (en) * | 2005-07-15 | 2007-01-25 | University Court Of The University Of Dundee | Surgical device for trans-nasal use |
| CN103623498A (en) * | 2008-09-18 | 2014-03-12 | 阿克拉伦特公司 | Methods and apparatus for treating disorders of the ear nose and throat |
| CN201759539U (en) * | 2010-08-31 | 2011-03-16 | 陈裕生 | Outer cannula of flexible endoscope |
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| CN112933377A (en) * | 2021-01-21 | 2021-06-11 | 温州医科大学附属第一医院 | Cricopharyngeal muscle dysfunction rehabilitation training device |
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| CN105597221B (en) | 2019-01-04 |
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