CN210020736U - Endotracheal tube convenient to ultrasonic development location - Google Patents

Abstract

The utility model discloses a endotracheal tube convenient to supersound development location, including endotracheal tube and the fixed developing solution bag that attaches to endotracheal tube outer wall surface, the developing solution bag has the elasticity bag membrane of hugging closely the endotracheal tube outer wall, the bag intracavity portion and the liquid bag connecting pipe intercommunication of developing solution bag, liquid bag connecting pipe outer end extends to and is connected with the topping up joint, connects through the topping up and is connected with priming device. The utility model is used for trachea cannula art can utilize the other ultrasonic examination of bed to judge whether tracheal tube puts into the position suitable, fixes a position tracheal tube through ultrasonic imaging technique, reduces the too dark or too shallow or take off the adverse reaction that the pipe leads to of tracheal tube intubate, avoids the patient to receive the influence of harmful inspection such as bronchofiberscope, X line, the utility model is simple in operation, can single both hands accomplish the operation, be harmless to the patient, be favorable to clinical wide use.

Description

Endotracheal tube convenient to ultrasonic development location

Technical Field

The utility model relates to a tracheal catheter convenient to supersound development location.

Background

The tracheal intubation is widely used clinically, and is particularly applied to airway management of patients in general anesthesia operations, intensive care units and emergency departments. However, the proper depth of the endotracheal tube cannot be accurately evaluated due to individual differences of patients, and the endotracheal tube may be displaced due to the change of the body position of the patient, so that the endotracheal tube may be inserted too deeply or too shallowly, or even inserted into the esophagus by mistake due to difficulty in intubation. Too deep a tracheal tube may damage the airway mucosa, e.g. by stimulating carina which may cause arrhythmia, bronchospasm, or by placing the tube in a unilateral main bronchus which may lead to hypoxemia, pneumothorax, atelectasis, etc. The trachea cannula is too shallow, so that the catheter is easy to fall off, or the catheter is inserted into the esophagus by mistake, so that the patient can have serious hypoxia event, even suffocate to die. It is therefore of great importance to assess the position of the endotracheal tube accurately in a timely manner.

At present, the depth and the position of the tracheal catheter can be judged clinically by using fiberbronchoscopy, but the fiberbronchoscopy is invasive, easily causes damage to a patient, and is complex in operation and expensive. The bedside ultrasonic examination has the advantages of convenience, rapidness and safety, and is widely applied to the fields of perioperative period, emergency treatment and severe medical science. However, the reason why the conventional endotracheal tube is mainly made of medical grade plastic and provided with a sealing balloon to fix the endotracheal tube in the trachea and seal the gap between the endotracheal tube and the tracheal wall is that, for example, the endotracheal tube can be positioned as disclosed in the chinese patent application No. 201510167866.6 and the endotracheal tube as disclosed in the chinese patent application No. 201710532047.6, after the endotracheal tube is inserted into the trachea, the position of the endotracheal tube cannot be observed from the neck by ultrasound, is that: because the trachea is internally filled with gas, and a low-pressure high-volume air bag is conventionally adopted after intubation, the trachea wall and the tracheal catheter are connected through the air bag in sequence, but ultrasonic waves hardly propagate in the air, the tracheal catheter cannot be subjected to ultrasonic development, and the tracheal catheter capable of being positioned through ultrasonic development does not exist clinically at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a tracheal catheter convenient to ultrasonic development location to the problem that current tracheal catheter can not fix a position through ultrasonic development after the intubate.

The utility model discloses a following technical scheme realizes:

the utility model provides an endotracheal tube convenient to supersound development location, includes endotracheal tube 1 and the fixed developing solution bag 3 that adheres to endotracheal tube outer wall surface, developing solution bag 3 has the elasticity bag membrane of hugging closely the endotracheal tube outer wall, the bag intracavity portion of developing solution bag 3 communicates with liquid bag connecting pipe, liquid bag connecting pipe outer end extends to and is connected with liquid filling joint 36, connects with priming device through liquid filling joint.

Further, the outer end of the liquid bag connecting pipe is communicated with the liquid bag 31 with a fixed volume, and the liquid filling joint 36 is arranged on the liquid bag 31.

Furthermore, the outer wall of the tracheal catheter 1 is fixedly attached with an annular sealing air bag 2, and the developing solution bag 3 surrounds the outer wall of the tracheal catheter at one end or two ends of the sealing air bag 2.

Further, the inside of the cavity of the sealed air bag 2 is communicated with an air bag connecting pipe, and the outer end of the air bag connecting pipe extends to be communicated with the air storage bag 21.

Further, the liquid bag connecting pipe and the air bag connecting pipe both comprise an outer connecting pipe and an inner connecting pipe, wherein the liquid bag inner connecting pipe 33 and the air bag inner connecting pipe 23 are fixedly laid along the inner pipe wall of the endotracheal tube 1, one ends of the liquid bag inner connecting pipe and the air bag inner connecting pipe penetrate through the pipe wall of the endotracheal tube 1 and are respectively communicated with the bag cavities of the developing liquid bag 3 and the sealed air bag 2, the other ends of the liquid bag inner connecting pipe and the air bag outer connecting pipe penetrate through the endotracheal tube 1 to respectively form a liquid bag outer connecting pipe 32 and an air bag outer connecting pipe 22, and the liquid bag outer connecting pipe 32 and the air bag outer connecting.

Further, a stop valve 34 is arranged on the liquid sac outer connecting pipe 32.

Further, an extrusion balloon 35 with a diameter larger than the diameter of the liquid bag outer connecting pipe is arranged on the liquid bag outer connecting pipe 32 between the stop valve 34 and the developing liquid bag.

Further, an air storage bag connector 24 with a valve is arranged on the air storage bag 21.

Furthermore, a development enhancement structure 13 is arranged on the tube wall of the catheter in the area where the projection of the developing solution sac 3 of the endotracheal tube 1 is located, and the development enhancement structure 13 comprises a spiral metal wire implanted in the tube wall of the catheter or air bubbles generated inside the tube wall of the catheter.

Further, the elastic capsule membrane of the developer capsule 3 is a medical latex membrane, a polyurethane membrane or a natural latex membrane.

The utility model discloses set up the developer bag on endotracheal tube, through filling into liquid in to the developer bag, make the developer bag swell to paste the tight contact with the endotracheal wall, do not have air interference between developer bag after the liquid filling and the trachea, this section region can develop through the ultrasonic wave and observe, and whether the developer bag position that utilizes to observe judges the inserted position of endotracheal tube in the trachea suitable. The developing solution bag can be repeatedly filled with liquid for repeated observation, the elastic liquid bag wall of the developing solution bag can automatically extrude and discharge the liquid when the liquid is not observed, and the developing solution bag is prevented from extruding the air pipe wall for a long time. Utilize the extrusion sacculus to realize that liquid flows in the developing solution bag is inside, improve ultrasonic development effect through the inside tiny bubble of liquid to set up development reinforcing structure on the endotracheal tube that corresponds the developing solution bag position, further improved the development effect of endotracheal tube in ultrasonic inspection, observe this section development region of endotracheal tube more easily, convenient operation can one both hands concurrent operation ultrasonic inspection equipment and extrusion sacculus.

To sum up, the utility model provides a endotracheal tube convenient to supersound develops location carries out trachea cannula art in-process, can utilize the other ultrasonic examination of bed to judge fast whether endotracheal tube puts into the position suitable, fixes a position endotracheal tube through supersound image technology, reduces the adverse reaction that endotracheal tube intubate is too dark or too shallow or take off the pipe and lead to, avoids the patient to receive the influence of harmful inspection such as bronchofiberscope, X line, the utility model is simple in operation, to the patient harmless, be favorable to clinical wide use.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is a schematic structural view of an endotracheal tube according to a first embodiment.

Fig. 2 is a schematic sectional view of the endotracheal tube in fig. 1 at a section a, and particularly a schematic arrangement of an inner connection tube inside the endotracheal tube.

Fig. 3 is a schematic cross-sectional view of the endotracheal tube of fig. 1 at section B, in particular, a schematic cross-sectional view of the inflatable sealing balloon.

Fig. 4 is a schematic cross-sectional view of the endotracheal tube of fig. 1 at section C, specifically a schematic cross-sectional view of the contrast fluid bladder after filling with liquid.

Fig. 5 is a schematic structural view of the endotracheal tube according to the second embodiment.

Fig. 6 is a schematic structural view of an endotracheal tube according to a third embodiment.

Reference numbers in the figures: 1-tracheal catheter, 11-tracheal catheter opening, 12-tracheal catheter joint, 13-development enhancement structure, 2-sealing air bag, 21-air storage bag, 22-air bag external connecting pipe, 23-air bag internal connecting pipe, 24-air storage bag joint, 3-development liquid bag, 31-liquid storage bag, 32-liquid bag external connecting pipe, 33-liquid bag internal connecting pipe, 34-stop valve, 35-extrusion air bag, 36-liquid filling joint and 4-tracheal catheter.

Detailed Description

Example one

Referring to fig. 1, the endotracheal tube in the figure is the preferred scheme of the utility model, including endotracheal tube 1 and adhere to sealed gasbag 2 and the developer bag 3 of arranging on endotracheal tube 1 outer pipe wall, wherein sealed gasbag 2 is used for endotracheal tube 1 to insert and fills gaseous bloated trachea wall of hugging closely after the trachea is inside, will insert and seal between endotracheal tube 1 and the trachea wall of trachea inside, developer bag 3 is then used for endotracheal tube 1 to insert and fills liquid bloated hugging closely trachea wall after the trachea is inside, as the ultrasonic wave propagation medium between trachea wall and endotracheal tube 1, realize this section endotracheal tube's ultrasonic development, detect endotracheal tube 1's intubate position.

Endotracheal tube 1 is clinical common endotracheal tube structure, adopts the flexible plastic pipe that has certain thickness, and 1 one end of endotracheal tube is endotracheal tube opening 11, inserts tracheal inside through endotracheal tube opening 11, and one end is endotracheal tube joint 12 in addition, and endotracheal tube joint 12 stays outside external being connected with the breathing machine after endotracheal tube 1 inserts the trachea.

For convenience of describing the specific scheme of the sealing air bag 2 and the developing solution bag 3, one end of the tracheal catheter 11 close to the opening 11 of the tracheal catheter is set as the inner end of the tracheal catheter, and one end close to the tracheal catheter joint 12 is set as the outer end of the tracheal catheter.

The sealing air bag 2 is positioned on the outer wall of the tracheal catheter 11 at one end close to the opening 11 of the tracheal catheter and is inserted into the trachea along with the tracheal catheter of the part, and the developing solution bag 3 is positioned on the outer wall of the tracheal catheter 11 at the inner end close to the sealing air bag 2 and is inserted into the trachea along with the tracheal catheter 11 along with the sealing air bag 2.

Sealed gasbag 2 adopts the flexible film of adhering to on endotracheal tube 1 outer wall to form and seals the bag chamber, the edge and the 1 outer wall hot melt body coupling of endotracheal tube of this flexible film, form the cyclic annular bag chamber around endotracheal tube 1, sealed gasbag 2's bag chamber forms a tourus and contradicts and pastes tight trachea wall after inflating and bloating, realize the contact seal between 1 intubate of endotracheal tube back and trachea 4, as shown in fig. 3, in this section, separate through the round air between 1 outer wall of endotracheal tube and the trachea wall, the ultrasonic wave can not pierce through this region and develop endotracheal tube. An opening is arranged on the tube wall of the tracheal catheter 1 covered by the sealing air bag 2, the air bag connecting tube is led out of the sealing air bag 2 through the opening, and the sealing air bag is connected with an inflating device arranged outside the body through the air bag connecting tube.

As shown in fig. 1 and 2, the air bag connection tube includes an air bag outer connection tube 22 and an air bag inner connection tube 23, wherein the air bag inner connection tube 23 is located inside the endotracheal tube 1 and is fixedly laid along the inner tube wall of the endotracheal tube 1, an opening is provided on the endotracheal tube 1 near the outer end of the endotracheal tube connector 12 to be led out to form the air bag outer connection tube 22, the air bag outer connection tube 22 is connected to an external air storage bag 21, and the air storage bag 21 is provided with an air storage bag connector 24. Gas storage bag 21 and sealed gasbag 2 directly communicate through the gasbag connecting pipe, let in the air in to gas storage bag 21 and sealed gasbag 2 through gas storage bag joint 24, simultaneously with gas storage bag 21 and the 2 bloated of sealed gasbag, because gas storage bag 21 and the 2 inside direct intercommunications of sealed gasbag, atmospheric pressure between the two is equal, utilize outside gas storage bag 21 can the perception lie in the intraductal bloated state of sealed gasbag 2, be convenient for adjust the degree of compressing tightly of sealed gasbag 2 to the trachea wall, avoid the 2 inside atmospheric pressure of sealed gasbag to lead to the fact the extrusion damage to the trachea too big.

The connection between the outer connecting pipe of the air bag and the pipe wall of the tracheal catheter 1 is integrally sealed and connected through hot melting, so that the gas in the sealed air bag is prevented from leaking, and the sealed air bag is prevented from losing effectiveness.

The developing solution bag 3 is also attached and fixed on the surface of the outer wall of the tracheal catheter 1, the developing solution bag 3 is provided with an elastic bag membrane tightly attached to the outer wall of the tracheal catheter, different from the sealing air bag 2, the bag membrane of the sealing air bag 2 is a flexible bag membrane, the bag membrane does not have extension elastic deformation, after the sealing air bag 2 extracts gas, the bag membrane can be folded and deformed, but the volume of the inner cavity of the sealing air bag cannot be reduced and changed, and the bag is similar to evacuated air in a plastic bag; the capsule membrane of the developing solution capsule 3 has elastic extensibility, and is unfolded and laid on the outer wall of the tracheal catheter 1 without being filled with liquid, no space exists between the capsule membrane and the tracheal catheter, after the developing solution capsule 3 is filled with liquid, the capsule membrane of the developing solution capsule 3 is elastically deformed, the developing solution capsule 3 bulges outwards, the space of the capsule cavity inside the developing solution capsule is gradually enlarged along with the filled liquid, and air or water is injected into the capsule cavity. Therefore, the volume of the developing solution bladder 3 is not fixed, but is related to the amount of elastic deformation of the bladder membrane.

In practical application, the elastic sac film of the developer sac 3 may be a medical latex film, a polyurethane film or a natural latex film, one side edge of the developer sac 3 is integrally connected with the tube wall of the endotracheal tube 1 through hot melting, the other side edge of the developer sac 3 is integrally connected with the sac film of the sealing air bag 2 through hot melting, the developer sac 3 forms an annular sac cavity surrounding the outer wall of the endotracheal tube 1 after being filled with liquid, the outer end of the developer sac is in contact with the trachea 4, as shown in fig. 4, in the section of area, the outer wall of the endotracheal tube 1 is separated from the trachea wall through a circle of liquid, and ultrasonic waves can be conducted to the trachea wall through the liquid filled in the developer sac 3 for development. The appearance of the developer bag 3 after liquid filling and the sealing air bag 2 form a complete air bag which protrudes out of the outer wall of the tracheal catheter 1, and the whole body is of an olive-shaped structure with two ends gradually shrinking towards the tracheal catheter. An opening is arranged on the tube wall of the tracheal catheter 1 covered by the developing liquid sac 3, and the developing liquid sac 3 is led out of a liquid sac connecting tube through the opening and is connected with an injection device arranged outside the body through the liquid sac connecting tube.

As shown in fig. 1 and 2, the sac connecting tube includes a sac outer connecting tube 32 and a sac inner connecting tube 33, wherein the sac inner connecting tube 33 is located inside the endotracheal tube 1 and is fixedly laid along the inner wall of the endotracheal tube 1, and an opening is provided on the endotracheal tube 1 near the outer end of the endotracheal tube connector 12 to be led out to form the sac outer connecting tube 32. In practical application, the liquid bag outer connecting pipe 32 may be directly connected to the liquid filling joint 36, and liquid may be injected into the developing liquid bag 3 through an external liquid injection device, in this embodiment, the outer end of the liquid bag connecting pipe is communicated with the liquid bag 31 having a fixed volume, the bag wall of the liquid bag 31 is different from the developing liquid bag 3, the bag wall of the liquid bag 31 has no elastic deformation, and forms a flexible bag body capable of being squeezed, the liquid filling joint 36 is disposed on the liquid bag 31, and liquid having the same volume as the liquid bag is injected into the liquid bag 31 through a liquid injection device such as a syringe, and the liquid is generally sterile water, so as to completely fill the liquid bag 31, at this time, since the film of the developing liquid bag 3 is tightly attached to the outer wall of the endotracheal tube 1 through its elasticity, and no liquid flows into the developing liquid bag 3 under the effect of no external pressure inside the liquid bag 31. When the endotracheal tube needs to be subjected to ultrasonic development positioning, the liquid storage bag 31 is extruded, part of liquid is filled into the inside of the liquid storage bag 3, and then the bulging of the liquid storage bag 3 can be realized, after the extrusion external force of the liquid storage bag 31 is released, the liquid in the liquid storage bag 3 is extruded back into the liquid storage bag 31 under the elastic recovery effect of the liquid storage bag membrane, and the membrane of the liquid storage bag 3 is tightly attached to the outer wall of the endotracheal tube 1.

The fixed volume of the reservoir 31 should be greater than the sum of the volume of the developer bag 3 inflated to contact the tracheal wall and the volume inside the connecting tube of the bag. The liquid filling joint 36 on the liquid storage bag 31 is provided with a valve, after liquid is filled into the liquid storage bag 36, the liquid storage bag 31 can be locked, and the liquid can be filled into the developing solution bag 3 by repeatedly squeezing the liquid storage bag 31 without repeatedly filling the liquid through a liquid filling device. Meanwhile, a clamp or other similar stop valves 34 are arranged on the liquid bag outer connecting pipe 32, after the liquid filling liquid in the developing liquid bag 3 swells, the stop valves 34 are closed, the backflow channel of the developing liquid bag 3 is cut off, the developing liquid bag 3 can keep a swelling state at the moment, and an operator can observe the developing liquid bag without extruding the liquid bag 31 for a long time.

In order to improve the ultrasonic developing effect of the liquid inside the developer bag 3, in this embodiment, the extrusion balloon 35 with a diameter larger than the pipe diameter of the liquid bag outer connecting pipe is arranged on the liquid bag outer connecting pipe 32 between the stop valve 34 and the developer bag, the extrusion balloon 35 is inevitably filled after the developer bag 3 is inflated by filling liquid, the extrusion balloon 35 capable of rebounding is extruded for multiple times, the liquid inside the developer bag 3 can rapidly flow and form a small amount of bubbles, the ultrasonic scattering property can be obviously enhanced by micro-bubbles contained in the liquid, a strong ultrasonic echo can be obtained, when the liquid flows, dynamic clear development can be obtained, and the position and the size of the developer bag 3 can be more clearly displayed. And the operator can operate the squeeze bag and the ultrasonic examination apparatus with both hands simultaneously.

Further, in order to improve the ultrasonic development effect of the tube wall of the endotracheal tube 1, in the present embodiment, the development enhancing structure 13 is disposed on the tube wall of the endotracheal tube 1 corresponding to the region where the projection of the developing solution sac 3 is located, and according to the characteristics of ultrasonic development, the development enhancing structure 13 includes a spiral metal wire implanted in the tube wall of the endotracheal tube or air bubbles generated inside the tube wall of the endotracheal tube during the production and forming process.

The specific method of use of the present example is described in detail below.

Before the tracheal catheter 1 is inserted into the trachea, the interior of the sealing air bag 2 is evacuated, the developing solution bag 3 is not filled with liquid, lidocaine cream or lubricating oil can be coated on the surface of the bag wall to increase the attaching degree of the bag wall and the trachea, and the attenuation of ultrasonic waves is reduced. After the tracheal catheter 1 is inserted into a tube, the air is filled into the sealed air bag 2 through the air storage bag connector 24 on the air storage bag 21 by using an injector, then the expansion degree of the sealed air bag 2 is sensed through the air storage bag 21 outside the body until the tracheal catheter is sealed in the trachea, and the injector is drawn out to close a valve on the air storage bag connector 24; then, the syringe is used for filling sterile water into the liquid storage bag 31 through the liquid filling connector 36 on the liquid storage bag 31, then the syringe is pulled out to close a valve on the liquid filling connector 36, the stop valve 34 is opened to extrude the liquid storage bag 31, the sterile water in the liquid storage bag 31 is extruded into the developing liquid bag 3, so that liquid is filled between the tracheal wall and the tracheal outer wall, then the stop valve 34 is closed, observation is carried out through a bedside ultrasonic machine, the liquid in the liquid storage bag 3 can flow to generate bubbles through extruding the balloon 35 in the observation process, the ultrasonic observation and developing effect is enhanced, and after the position of the developing liquid bag 3 is observed, the specific intubation position of the tracheal catheter 1 can be evaluated by combining the fixed distance from the developing liquid bag 3 to the tracheal catheter opening 11 at the inner end of the tracheal catheter 1.

Example two

Referring to fig. 5, the endotracheal tube in the figure is the second preferred embodiment of the present invention, in this embodiment, the developing liquid bag 3 is located on the outer wall of the endotracheal tube 1 where the sealing air bag 2 is close to the outer end, and in this structure, the developing air bag 3 is closer to the glottis, and the specific intubation position of the endotracheal tube 1 can be evaluated by using the relative distance between the developing liquid bag 3 and the glottis.

EXAMPLE III

Referring to fig. 6, the endotracheal tube in the figure is the third preferred embodiment of the present invention, in this embodiment, two developing solution capsules 3 are provided, which are respectively located on the outer walls of the endotracheal tube 1 at both ends of the sealing air bag 2, and outlets are respectively provided on the wall of the endotracheal tube corresponding to the two developing solution capsules 3, and the two developing solution capsules 3 are communicated with each other through the parallel connection of the connecting tubes in the liquid capsules. The present embodiment has the structural features of both the first embodiment and the second embodiment, and the operator has more choices in clinical practice.

The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a endotracheal tube convenient to supersound development location which characterized in that: the developing solution bag comprises an endotracheal tube (1) and a developing solution bag (3) fixedly attached to the surface of the outer wall of the endotracheal tube, wherein the developing solution bag (3) is provided with an elastic bag film tightly attached to the outer wall of the endotracheal tube, the inside of a bag cavity of the developing solution bag (3) is communicated with a liquid bag connecting pipe, and the outer end of the liquid bag connecting pipe extends to be connected with a liquid filling connector (36) and is connected with a liquid filling device through the liquid filling connector.

2. An endotracheal tube for facilitating localization by sonography as claimed in claim 1, further comprising: the outer end of the liquid bag connecting pipe is communicated with a liquid storage bag (31) with a fixed volume, and the liquid filling joint (36) is arranged on the liquid storage bag (31).

3. An endotracheal tube for facilitating sonographic localization according to claim 1 or 2, characterized in that: the outer wall of the tracheal catheter (1) is fixedly attached with an annular sealing air bag (2), and the developing solution bag (3) surrounds the outer wall of the tracheal catheter positioned at one end or two ends of the sealing air bag (2).

4. An endotracheal tube for facilitating localization by sonography as claimed in claim 3, wherein: the inside of the cavity of the sealed air bag (2) is communicated with an air bag connecting pipe, and the outer end of the air bag connecting pipe extends to be communicated with an air storage bag (21).

5. An endotracheal tube for facilitating localization by sonography as claimed in claim 4, wherein: the liquid bag connecting pipe and the air bag connecting pipe both comprise an outer connecting pipe and an inner connecting pipe, wherein the liquid bag inner connecting pipe (33) and the air bag inner connecting pipe (23) are fixedly laid along the inner pipe wall of the tracheal catheter (1), one end of the inner connecting pipe penetrates through the pipe wall of the tracheal catheter (1) and is respectively communicated with the bag cavities of the developing liquid bag (3) and the sealed air bag (2), the other end of the inner connecting pipe penetrates out of the tracheal catheter (1) to respectively form a liquid bag outer connecting pipe (32) and an air bag outer connecting pipe (22), and the liquid bag outer connecting pipe (32) and the air bag outer connecting pipe (22) are respectively communicated with the liquid filling connector (36) and the air storage bag (21).

6. An endotracheal tube for facilitating localization by sonography as claimed in claim 5, wherein: and a stop valve (34) is arranged on the liquid sac outer connecting pipe (32).

7. An endotracheal tube for facilitating localization by sonography as claimed in claim 6, further comprising: and an extrusion balloon (35) with the diameter larger than that of the liquid sac outer connecting pipe is arranged on the liquid sac outer connecting pipe (32) between the stop valve (34) and the developing liquid sac.

8. An endotracheal tube for facilitating localization by sonography as claimed in claim 4, wherein: and the air storage bag (21) is provided with an air storage bag connector (24) with a valve.

9. An endotracheal tube for facilitating localization by sonography as claimed in claim 1, further comprising: the tracheal catheter (1) is provided with a development enhancement structure (13) on the catheter wall corresponding to the region where the projection of the developing solution sac (3) is located, and the development enhancement structure (13) comprises a spiral metal wire implanted in the catheter wall or air bubbles generated inside the catheter wall.

10. An endotracheal tube for facilitating localization by sonography as claimed in claim 1, further comprising: the elastic capsule membrane of the developing solution capsule (3) adopts a medical latex membrane, a polyurethane membrane or a natural latex membrane.

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