CN113974753B - Bronchus occluder - Google Patents
Bronchus occluder Download PDFInfo
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- CN113974753B CN113974753B CN202111477854.5A CN202111477854A CN113974753B CN 113974753 B CN113974753 B CN 113974753B CN 202111477854 A CN202111477854 A CN 202111477854A CN 113974753 B CN113974753 B CN 113974753B
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- 210000000621 bronchi Anatomy 0.000 title claims abstract description 42
- 230000007704 transition Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 13
- 238000005452 bending Methods 0.000 abstract description 12
- 238000002627 tracheal intubation Methods 0.000 description 9
- 210000004072 lung Anatomy 0.000 description 7
- 238000001356 surgical procedure Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000000115 thoracic cavity Anatomy 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12104—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in an air passage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12159—Solid plugs; being solid before insertion
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The application provides a bronchus occluder, and belongs to the technical field of medical appliances. It has solved the inconvenient problem of current bronchus plugging device intubate. This bronchus plugging device, including the body and set up the cover bag portion in body one end, the body includes body section, deformation section and atress section in proper order along length direction, cover bag portion is connected with the atress section, still be equipped with the driving piece in the body just the driving piece can drive deformation section and take place to buckle and make and form the contained angle between atress section and the body section. This bronchus plugging device inserts through the straight tube to can make the body automatic bending of body realize turning through the driving piece when inserting the corner, whole intubate process is smooth and easy unobstructed, has improved intubate operation's convenience.
Description
Technical Field
The application belongs to the technical field of medical instruments, and relates to a bronchus occluder.
Background
Surgical operation is a common method for treating thoracic surgery diseases, in recent years, the thoracic surgery is continuously developed and matured, the types of thoracic surgery are continuously increased, besides various lung cancer radical operations, thoracoscopic minimally invasive operations are also performed, and the range of diseases which can be treated is continuously expanded. In chest surgery, it is often necessary to apply a pulmonary isolation technique to isolate the patient side lung from the bond side lung, block the main bronchus of the patient side, and perform ventilation of a single lung on the healthy side, so that on one hand, a good view is created for the surgery for relatively fixing the anatomical position of the patient side lung, which is convenient for the surgery operation, and on the other hand, unnecessary infection on the healthy side caused by blood and secretion on the patient side entering the healthy side lung can be avoided, and the surgery effect is affected. Currently, the commonly used single-lung ventilation methods are the double-lumen bronchial catheter method and the bronchial occluder method. The bronchus blocking device is a novel bronchus blocking catheter, and has the advantages of simple intubation and positioning, large effective lumen, complete lung isolation, small physiological interference and the like compared with the common double-lumen bronchus catheter.
The existing bronchus occluder comprises a tube body 1, a cuff 1a arranged at the tail end of the tube body and an air charging device which is arranged at the head end of the tube body 1 and can charge the cuff 1a, and the tube body 1 can scratch the surface of the trachea of the throat of a human body inevitably in the intubation process to cause scratch. Therefore, in order to avoid the scratch caused by intubation, an inflation-free laryngeal mask 8 (as shown in fig. 1) is inserted into the throat before intubation, the shape of the laryngeal mask 8 is more consistent with the outline of the throat of a human body, the scratch is not caused, and then the bronchus blocking device is inserted into the airway of the laryngeal mask. Because of the unique anatomical features of the human body, the junction between the oral cavity and the throat of the human body is a curved passage, so that the airway of the laryngeal mask 8 is also a curved passage, and during intubation, the end of the tube body 1 abuts against the inner wall of the curve of the airway of the laryngeal mask 8, so that smooth insertion cannot be achieved (as shown in fig. 2).
In order to solve the above problem of difficult insertion at the corner, the conventional practice is to make the end of the tube body into a bent shape, such as the plugging bronchial tube disclosed in chinese patent application (application number: 201620248732.7), such as the information visualization plugging bronchial tube disclosed in chinese patent application (application number: 20182398163. X), such as the bronchial occluder disclosed in chinese patent application (application number: 201620922643.6), such as the bronchial occluder disclosed in chinese patent application (application number: 201911171413.5), and so on. The bending device can enable the laryngeal mask airway to be smoothly inserted into the bent part of the laryngeal mask airway, however, in order to ensure the opening comfort of the mouth of a human body, the size of the channel of the front half section of the laryngeal mask is correspondingly smaller, and the size of the channel is only slightly larger than the pipe diameter of the pipe body.
Disclosure of Invention
The application aims at solving the problems in the prior art, and provides a bronchus occluder, which aims at solving the technical problems that: how to solve the problem of inconvenient existing intubation.
The aim of the application can be achieved by the following technical scheme: the utility model provides a bronchus plugging device, includes the body and sets up the cover bag portion in body one end, its characterized in that, the body includes body section, deformation section and atress section in proper order along length direction, cover bag portion is connected with the atress section, still be equipped with the driving piece in the body just the driving piece can drive deformation section and take place to buckle and make and form the contained angle between atress section and the body section.
The pipe body of this bronchus stopper adopts medical plastics to make, and the pipe body is syllogic structure, and under the normal condition, deformation section does not take place to buckle, and the pipe body is straight tube-shaped, and its tip can not take place to support with the inner wall of laryngeal mask first half section after the pipe body inserts the laryngeal mask to press, can smooth and easy the inserting, when the pipe body inserts the corner of laryngeal mask, takes place to buckle through the driving piece drive deformation section of operating for form the contained angle between stress section and the body section, realize turning promptly in the corner is automatic, makes whole pipe body smooth through the exit end of turning the department from the laryngeal mask wear out and insert in human bronchus, accomplish the intubate. This bronchus plugging device inserts through the straight tube to can make the body automatic bending of body realize turning through the driving piece when inserting the corner, whole intubate process is smooth and easy unobstructed, has improved intubate operation's convenience.
In the bronchus plugging device, the driving piece comprises a pull wire, the inner wall of the body section is provided with a guide boss protruding inwards, the guide boss is provided with a through hole, one end of the pull wire is fixedly connected to the inner wall of the stressed section, the other end of the pull wire penetrates through the through hole and penetrates out of the body, and a connecting point of the pull wire and the inner wall of the stressed section and a connecting line between the connecting point and the central point of the through hole are obliquely arranged relative to the axis of the body section. Through the setting of direction boss for act as go-between is the slope form after being straightened, and the tensile direction that the atress section received also is the slope, can know through the decomposition of power, and the atress section can be pulled towards radial direction, because the hardness of body section and atress section all is greater than the deformation section, deformation section atress takes place to buckle for form the contained angle between atress section and the body section and be the form of buckling, thereby can be smooth and easy the corner of passing through the laryngeal mask, whole intubate process is smooth and easy unobstructed, has improved intubate operation's convenience. The pull wire is made of medical suture which can be absorbed by human body. Alternatively, the driving member may be a pull rod, which includes a horizontal section extending along a length direction of the tube body and a bending section bending toward a tube wall direction, and the bending section is connected with the stress section.
In the bronchus plugging device, one side of the guide boss, which is close to the deformation section, is provided with a guide surface which is obliquely arranged, a strip-shaped guide groove is formed in the guide surface, one end of the guide groove is communicated with the through hole, and the stay wire is embedded into the guide groove. Through the setting of guide way for being spacing in the guide way after the stay wire is straightened, avoid controlling the drunkenness, thereby realize prescribing a limit to the atress direction of atress section department, guarantee that deformation section can be better take place deformation bending, thereby can be smooth and easy through the corner of laryngeal mask, whole intubate process is smooth and easy without the hindrance, has improved intubate operation's convenience. The stay wire is straightened and then is abutted against the bottom wall of the guide groove or has a slight gap with the bottom wall of the guide groove.
In the bronchial occluder described above, the centerline of the via is parallel to the centerline of the body segment. Through above-mentioned setting for can realize pulling deformation section through minimum pulling force and buckle, make the operation more simple and convenient.
In the bronchus plugging device, an operation interface is arranged on the outer wall of the tube body, the stay wire penetrates out of the operation interface and is connected with a fixed cover, and the fixed cover is in threaded connection with the operation interface. In the intubation process, the fixed cover is separated from the operation interface, when the laryngeal mask is inserted into the corner, the stay wire is pulled outwards through the fixed cover, so that the deformation section deforms and bends smoothly through the corner, and after the intubation is completed, the fixed cover is only required to be connected with the operation interface again through threads, so that the tube body can be ensured to be airtight, and the inflation in the cuff can be ensured to be normal.
In the bronchus plugging device, the inner wall of one end of the through hole far away from the deformation section is provided with the concave installation groove, the installation groove is rotationally connected with the rolling pin, and the rolling pin protrudes out of the inner wall of the through hole. The roller pin protrudes out of the inner wall of the through hole, when the pull wire is pulled, the pull wire is propped against the outer circumferential surface of the roller pin, the roller pin can roll, the friction force is small, and the pull wire can be more labor-saving. Preferably, the inner wall of one end of the through hole, which is communicated with the guide groove, is also provided with an installation groove, and the installation groove is rotationally connected with a needle roller.
In the bronchus plugging device, the edge of one end port of the through hole far away from the deformation section is in arc transition. Arc transition avoids the stay wire to be cut off by friction at the edge.
In the bronchus plugging device, the joint of the guide groove and the through hole is in arc transition. Arc transition avoids the stay wire to be cut off by friction at the joint.
In the bronchus occluder, the deformation section is in a corrugated shape. The deformation section is bellows-shaped, and can be bent after being stressed, so that the deformation section can smoothly pass through the corner of the laryngeal mask. As an alternative scheme, the hardness of body section and atress section is all greater than the deformation section, deformation section takes place deformation bending after the atress.
In the bronchus occluder, the inner wall of the stress section is provided with a convex connecting convex part, one end of the stay wire is fixedly connected to the connecting convex part, and the connecting convex part is positioned at one end of the stress section close to the cuff part. The connecting convex part is positioned at one end close to the cuff part, so that bending can be realized more labor-saving.
Compared with the prior art, the bronchus occluder has the following advantages:
1. this bronchus plugging device inserts through the straight tube to can make the body automatic bending of body realize turning through the driving piece when inserting the corner, whole intubate process is smooth and easy unobstructed, has improved intubate operation's convenience.
2. The guide boss, the connecting convex part, the stay wire and the like are all arranged in the tube body, so that specific intubation operation cannot be influenced.
Drawings
Fig. 1 is a schematic view of the laryngeal mask.
Fig. 2 is a schematic view of the structure of a prior art bronchial occluder inserted through a laryngeal mask.
Fig. 3 is a schematic structural view of the present bronchial occluder.
Fig. 4 is a cross-sectional view of the bronchial occluder.
Fig. 5 is an enlarged view at a in fig. 4.
Fig. 6 is a perspective view of the guide boss.
In the figure, 1, a pipe body; 1a, a cuff portion; 1b, a body section; 1c, a deformation section; 1d, a stress section; 1e, an operation interface; 1f, connecting convex parts; 2. a pull wire; 3. a guide boss; 3a, via holes; 3a1, a mounting groove; 3b, a guide surface; 3b1, guide grooves; 4. a fixed cover; 5. needle roller; 6. an inflator; 7. a bleed valve; 8 laryngeal mask.
Detailed Description
The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments.
As shown in fig. 3 and 4, the bronchus occluder comprises a tube body 1 and a cuff portion 1a arranged at one end of the tube body 1, wherein an inflation device 6 which is communicated with the tube body 1 and can inflate the cuff portion 1a through the tube body 1 is further arranged at the other end of the tube body 1, and a deflation valve 7 is further connected to the tube body 1.
Specifically, the tube body 1 sequentially includes a body section 1b, a deformation section 1c and a stress section 1d along the length direction, and the inflator 6 and the deflation valve 7 are both provided on the body section 1b, and the cuff portion 1a is connected with the stress section 1 d. The hardness of the body section 1b and the stress section 1d is greater than that of the deformation section 1c, and a driving piece is further arranged in the pipe body 1 and can drive the deformation section 1c to deform and bend so that an included angle is formed between the stress section 1d and the body section 1 b. In this embodiment, the deformation section 1c has a bellows shape.
Further, as shown in fig. 4, 5 and 6, the stress section 1d has a tapered transition portion, the cuff portion 1a is connected to a small port of the transition portion, and a convex connection protrusion 1f is provided on an inner wall of the transition portion of the stress section 1 d. The driving piece is including acting as go-between 2, act as go-between 2 for adopting can be made by human absorptive medical suture, act as go-between 2 one end links firmly on connecting convex part 1f, and the transition portion is the taper, and the inner wall is the slope setting to make after the atress more easily pull towards one side, make deformation section 1c more easily deform and buckle, the outer wall also can play the effect of a direction with the laryngeal mask supports the pressure when inserting like laryngeal mask corner simultaneously, further makes more easily buckle. The inner wall of one end of the body section 1b, which is close to the deformation section 1c, is provided with a guide boss 3 protruding inwards, and the protruding height of the guide boss 3 is 1/2-2/3 of the diameter of the pipe body 1. The guide boss 3 is provided with a through hole 3a, and the central line of the through hole 3a is parallel to the central line of the pipe body 1. The outer wall of the pipe body 1 is provided with an operation interface 1e, and the operation interface 1e is positioned at one end of the body section 1b far away from the deformation section 1 c. The other end of the stay wire 2 passes through the through hole 3a and out of the operation interface 1e, and is connected with a fixed cover 4, and the fixed cover 4 is in threaded connection with the operation interface 1 e. The distance from the center point of the through hole 3a to the inner wall of the pipe body 1 is larger than the distance from the connecting point of the pull wire 2 and the inner wall of the stress section 1d to the inner wall of the pipe body 1.
Further, the edge of the end port of the through hole 3a far away from the deformation section 1c is in arc transition, so that the stay wire 2 is prevented from being cut off by friction at the edge. The side of the guide boss 3, which is close to the deformation section 1c, is provided with a guide surface 3b which is obliquely arranged, and the inclination angle of the guide surface 3b is 15-30 degrees. The guide surface 3b is provided with a strip-shaped guide groove 3b1, one end of the guide groove 3b1 is communicated with the through hole 3a, the stay wire 2 is embedded into the guide groove 3b1, and the stay wire 2 is propped against the bottom wall of the guide groove 3b1 after being straightened or is in clearance with the bottom wall of the guide groove 3b 1. The arc transition at the joint of the guide groove 3b1 and the through hole 3a prevents the stay wire 2 from being cut off by friction at the joint. The inner walls of the two ends of the via hole 3a are provided with concave mounting grooves 3a1, the mounting grooves 3a1 are rotatably connected with rolling needles 5, and the rolling needles 5 protrude out of the inner wall of the via hole 3 a.
The working principle of the bronchus occluder is as follows: under normal state, deformation section 1c does not take place to buckle, body 1 is straight tubulose, when needs intubate, present patient's throat department trachea inserts laryngeal mask 8 in, then will have one end of cuff portion 1a to insert laryngeal mask 8 in, when inserting to the department of turning of laryngeal mask 8, take off fixed lid 4 from operation interface 1e, pull wire 2 outwards through fixed lid 4, pull wire 2 is straightened back under the effect of the guide surface 3b of guide boss 3, make this part of pull wire 2 of hole 3a to connection boss department be the inclination state, thereby the pulling force direction that makes the atress section 1d receive is also the slope, through the decomposition of the power can know, the partial component that atress section 1d receives is radial, because body section 1b and atress section 1 d's hardness all are greater than deformation section 1c, consequently, can make deformation section 1c atress take place after the atress by the radial direction, make and form the contained angle to be smooth and easy through the bending of the department of turning of laryngeal mask 8 between atress section 1d, thereby whole intubate. After the cuff part 1a is smoothly inserted into the main bronchus of the patient side lung, the fixed cover 4 is connected with the operation interface 1e in a threaded manner again so that the tube body 1 is kept airtight, and the inflation device 6 inflates inwards so that the cuff part 1a inflates and expands to seal the main bronchus of the patient side. After the operation is finished, the air is discharged through the air discharge valve 7, so that the cuff part 1a is contracted, and the tube body 1 is pulled out.
This bronchus plugging device inserts through the straight tube to can make the automatic bending of body 1 realize turning through the driving piece when inserting the corner, whole intubate process is smooth and easy unobstructed, has improved intubate operation's convenience.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.
Although terms such as the tube body 1, the cuff portion 1a, the body section 1b, the deformation section 1c, the force receiving section 1d, the operation interface 1e, the connection protrusion 1f, the wire 2, the guide boss 3, the via hole 3a, the mounting groove 3a1, the guide surface 3b, the guide groove 3b1, the fixing cap 4, the needle roller 5, the inflator 6, the air release valve 7, the laryngeal mask 8 and the like are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the application; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present application.
Claims (9)
1. The bronchus occluder comprises a tube body (1) and a cuff part (1 a) arranged at one end of the tube body (1), and is characterized in that the tube body (1) sequentially comprises a body section (1 b), a deformation section (1 c) and a stress section (1 d) along the length direction, the cuff part (1 a) is connected with the stress section (1 d), a driving piece is further arranged in the tube body (1), and the driving piece can drive the deformation section (1 c) to bend so that an included angle is formed between the stress section (1 d) and the body section (1 b); the driving piece comprises a pull wire (2), a guide boss (3) protruding inwards is arranged on the inner wall of the body section (1 b), the protruding height of the guide boss (3) is 1/2-2/3 of the diameter of the pipe body (1), a through hole (3 a) is formed in the guide boss (3), one end of the pull wire (2) is fixedly connected to the inner wall of the stress section (1 d), the other end of the pull wire passes through the through hole (3 a) and passes out of the pipe body (1), and a connecting line between a connecting point of the pull wire (2) and the inner wall of the stress section (1 d) and the central point of the through hole (3 a) is obliquely arranged relative to the axis of the body section (1 b); one side of the guide boss (3) close to the deformation section (1 c) is provided with a guide surface (3 b) which is obliquely arranged, and the inclination angle of the guide surface (3 b) is 15-30 degrees.
2. The bronchus occluder according to claim 1, wherein the guiding surface (3 b) is provided with a strip-shaped guiding groove (3 b 1), one end of the guiding groove (3 b 1) is communicated with the through hole (3 a), and the stay wire (2) is embedded into the guiding groove (3 b 1).
3. The bronchus occluder according to claim 1 or 2, wherein the centre line of the via hole (3 a) is parallel to the centre line of the body segment (1 b).
4. The bronchus occluder according to claim 1 or 2, wherein the outer wall of the tube body (1) is provided with an operation interface (1 e), the stay wire (2) penetrates out of the operation interface (1 e) and is connected with a fixed cover (4), and the fixed cover (4) is in threaded connection with the operation interface (1 e).
5. The bronchus occluder according to claim 2, wherein the inner wall of the end of the via hole (3 a) far away from the deformation section (1 c) is provided with a concavely arranged mounting groove (3 a 1), the mounting groove (3 a 1) is rotationally connected with a needle roller (5), and the needle roller (5) protrudes out of the inner wall of the via hole (3 a).
6. The bronchus occluder according to claim 2 or 5, wherein the inner wall of one end of the through hole (3 a) communicated with the guide groove (3 b 1) is provided with a mounting groove (3 a 1), and the mounting groove (3 a 1) is rotationally connected with a needle roller (5).
7. The bronchus occluder according to claim 1 or 2, wherein the end port edge of the via hole (3 a) remote from the deformation section (1 c) is in a circular arc transition.
8. The bronchus occlusion device according to claim 2, wherein the connection of the guiding groove (3 b 1) and the via hole (3 a) is rounded.
9. The bronchus occluder according to claim 1 or 2, wherein the inner wall of the stress section (1 d) is provided with a convex connecting convex part (1 f), one end of the stay wire (2) is fixedly connected to the connecting convex part (1 f), and the connecting convex part (1 f) is positioned at one end of the stress section (1 d) close to the cuff part (1 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111477854.5A CN113974753B (en) | 2021-12-06 | 2021-12-06 | Bronchus occluder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111477854.5A CN113974753B (en) | 2021-12-06 | 2021-12-06 | Bronchus occluder |
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| Publication Number | Publication Date |
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| CN113974753A CN113974753A (en) | 2022-01-28 |
| CN113974753B true CN113974753B (en) | 2023-12-15 |
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| CN211724297U (en) * | 2019-08-14 | 2020-10-23 | 广州医科大学附属第一医院（广州呼吸中心） | Angle-adjustable bronchial blocking tube |
| CN110787350A (en) * | 2019-12-02 | 2020-02-14 | 浙江优亿医疗器械有限公司 | Double-cavity bronchial cannula |
| CN113440203A (en) * | 2021-07-13 | 2021-09-28 | 丽水市人民医院 | Novel inner bag bronchus shutoff pipe |
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| CN113974753A (en) | 2022-01-28 |
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