CN110013593B

CN110013593B - Tracheal cannula guide wire, tracheal catheter and application of guide wire

Info

Publication number: CN110013593B
Application number: CN201910413084.4A
Authority: CN
Inventors: 鲍永新; 王丽娥; 鲍永岩; 刘丹; 陈作雷; 张海青; 魏建凤; 李婧
Original assignee: Qingdao Women and Childrens Hospital
Current assignee: Qingdao Women and Childrens Hospital
Priority date: 2019-02-03
Filing date: 2019-05-17
Publication date: 2024-07-26
Anticipated expiration: 2039-05-17
Also published as: CN110013593A; CN211245113U; WO2020155652A1; CN210542821U

Abstract

The application discloses a trachea cannula guide wire, belonging to medical appliances; the guide wire comprises a shell, a first channel for injecting medicines such as anesthetics is axially arranged in the shell, the first channel comprises a medicine feeding end extending out of the shell, a spray head in sliding connection with the first channel is sleeved at the medicine feeding end, a soft bag for storing the medicines is coated on the periphery of the spray head, the soft bag is communicated with the first channel through a first through hole formed in the spray head, and a second through hole for spraying the medicines under the inhalation state of a patient is further formed in the spray head. The guide wire can be matched with spontaneous breathing of a patient to carry out drug delivery, the guide wire enters the airway, and the drug delivery effect is good.

Description

Tracheal cannula guide wire, tracheal catheter and application of guide wire

Technical Field

The application belongs to the technical field of medical appliances, and particularly relates to an endotracheal intubation guide wire, an endotracheal tube and application of the guide wire.

Background

The tracheal intubation is a technology for placing a special endotracheal tube into the trachea through the glottis, and is an important technology for ensuring the airway of a patient to be unobstructed, effectively ventilating and supplying oxygen and avoiding aspiration in emergency treatment and general anesthesia.

The guide wires in the prior art often have a housing, and a channel in the housing through which a drug can be injected is provided; the guidewire is typically an elongate catheter and may be made of plastic or stainless steel.

Patent CN203777449U discloses a multi-functional trachea cannula leads core, sets up the passageway in its leading core casing, when going on blind intubate or glottis to show poorly, can spray the anesthetic through the passageway on the surface, also can pass through the tail main hole and breathe the air current carbon dioxide detection and distinguish the air flue voluntarily, and then guide endotracheal tube, makes its inserts smoothly. However, the multifunctional tracheal cannula core has poor administration effect.

Disclosure of Invention

The application provides an endotracheal intubation guide wire, an endotracheal tube and application of the guide wire. The application adopts the technical scheme that:

the application provides an endotracheal intubation guide wire, which comprises a shell, wherein a first channel for injecting medicines such as anesthetics is axially arranged in the shell, the first channel comprises a medicine feeding end extending out of the shell, a spray head which is slidably connected with the first channel is sleeved at the medicine feeding end, a soft bag for storing the medicines is coated on the periphery of the spray head, the soft bag is communicated with the first channel through a first through hole arranged on the spray head, and a second through hole for spraying the medicines in an inhalation state of a patient is further arranged on the spray head.

Preferably, the soft bag is located at the side face of the spray head, and the second through hole is located at the front end of the spray head.

Preferably, the housing is provided with a recess for accommodating the spray head.

Preferably, the nozzle is provided with a plurality of first through holes along the circumferential direction, and the front end of the nozzle is provided with a plurality of second through holes.

Preferably, the front end of the spray head is provided with a wireless probe.

Preferably, a buffer component is arranged in the spray head.

Preferably, the buffer assembly comprises a fixing piece and an elastic piece, wherein the fixing piece is connected with the administration end, and the elastic piece is located between the fixing piece and the spray head and far away from the second through hole.

Or preferably, the buffer assembly comprises a fixing piece and an elastic piece, and the administration end of the first channel is formed inside the fixing piece; the fixing piece is positioned between the elastic piece and the second through hole; when the elastic piece is released, the fixing piece blocks the first through hole, and the drug delivery end is communicated with the first through hole; when the elastic piece is compressed, the fixing piece is removed, and the first through hole is exposed.

Preferably, the elastic member is a spring.

Preferably, a section of the first channel between the housing and the fixture may be provided with an outer wall layer, the outer wall layer having a thickness, the spray head sliding over the outer wall layer surface; preferably, the outer wall layer is provided as a one-piece construction with the housing and the fastening element.

Preferably, one end of the fixing piece facing the elastic piece, or one end of the outer wall layer, which is close to the fixing piece and faces the elastic piece, is provided with a clamping piece; the spray head is provided with a clamped piece matched with the clamping piece.

Preferably, the clamping piece is a convex lug and is positioned at the outer edge of the fixing piece or the outer wall layer; the clamped piece is also a convex lug which is close to the first channel.

Preferably, a wrapping film is arranged between the front end of the spray head and the shell, and the wrapping film has redundant length or elasticity.

Preferably, a second channel is axially provided in the housing.

Preferably, the second channel is independent of the first channel.

Preferably, a first one-way valve is arranged in the first channel; and a second one-way valve is arranged in the second channel.

Preferably, the shell of the guide wire is provided with scales.

Preferably, a support is provided in the first channel and/or in the second channel.

Preferably, the fixing piece is circumferentially provided with a sealing ring.

The second aspect of the application provides an endotracheal tube, wherein the endotracheal tube is internally provided with the endotracheal tube guide wire, and the nozzle of the guide wire is exposed out of the front end of the tube.

In a third aspect, the application provides the use of an endotracheal tube guide wire as described above.

The application comprises the following steps:

Fixing the trachea cannula guide wire according to the position of the glottis of the patient, and conveying anesthetic to the soft bag through the first channel; when the patient inhales, the spray head moves forwards to the glottis of the patient, and meanwhile the soft bag elastically retracts and the anesthetic in the soft bag is sprayed out through the second through hole to anesthetize the glottis of the patient. May be repeated a number of times, such as 3 times.

Further, the fixing position of the trachea cannula guide wire is redetermined towards the direction away from the spray head, the fixing position is determined according to the distance between the glottis of the patient and the airway, the trachea cannula guide wire is sucked into the airway of the patient through the inhalation force of the patient, and the trachea cannula guide wire is used for anesthetizing the airway of the patient through the second channel and guiding the trachea cannula.

Compared with the prior art, the application has the beneficial effects that:

1. The application provides an endotracheal intubation guide wire, which avoids the dependence of the traditional intubation mode on glottis exposure, can be matched with spontaneous breathing of a patient to carry out drug administration and the guide wire enters an airway, has good drug administration effect, and is suitable for various slow induction general anesthesia intubates retaining spontaneous breathing;

2. According to the application, the buffer assembly is arranged in the spray head, so that the spray head is protected, and meanwhile, the damage to human body in the intubation process is avoided;

3. The application can be used for rapidly dosing the trachea of a patient by arranging the second channel, so as to realize rapid anesthesia of the airway of the patient, and can be used for monitoring the CO ₂ of the exhaled air by the second channel, so as to realize the purpose of identifying the airway and facilitate smooth intubation;

4. The application also provides application of the trachea cannula guide wire, avoids dependence of a traditional cannula mode on glottis exposure, reduces the difficulty of trachea cannula, and provides safety guarantee for difficult airway cannula.

Drawings

FIG. 1 is a schematic view of an endotracheal tube guide wire according to one embodiment;

FIGS. 2 and 3 are schematic views of an embodiment of a tracheal cannula guide wire administration process;

FIG. 4 is a schematic view of an endotracheal tube guide wire according to another embodiment;

FIG. 5 is a first partial schematic view of a guidewire;

FIG. 6 is a second partial schematic view of a guidewire;

FIG. 7 is a schematic view of an endotracheal tube;

In the above figures: 1, a shell; 101 grooves; 2a first channel; 21 administration end; 22 a first one-way valve, 3a spray head; 31 soft capsules; 32 first through holes; 33a second through hole; 34 a cushioning assembly; 341 a fixing member; 342 elastic member; 4 a second channel; 41 a second one-way valve; 5, probe; 6, an outer wall layer; 7, a clamping piece; 8a clamped piece; 9 wrapping the film; 10 scale; an endotracheal tube.

Detailed Description

The present application will be specifically described below by way of exemplary embodiments. It is to be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "bottom", "inner", etc. are based on the directions or positional relationships shown in fig. 1, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

The axial direction in the present application mainly refers to the direction along the length of the guide wire, and the "front" or "front end" mainly refers to the end of the guide wire or catheter in the direction of entering the patient, and is mainly shown in the right end direction of the drawing in the drawing.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, an embodiment of the present application provides an endotracheal intubation guide wire (hereinafter may be simply referred to as guide wire), comprising a housing 1, a first passage 2 for injecting anesthetic is axially provided in the housing 1, the first passage 2 includes a dosing end 21 extending out of the housing 1, a nozzle 3 slidably connected to the first passage 2 is sleeved on the dosing end 21, a soft bag 31 for storing anesthetic is wrapped around the nozzle 3, the soft bag 31 communicates with the first passage 2 through a first through hole 32 provided in the nozzle 3, and a second through hole 33 for ejecting anesthetic in an inhalation state of a patient is further provided in the nozzle 3.

The guide wire can cooperate with spontaneous breathing of a patient to administer drugs to the glottis of the patient for anaesthesia, specifically, as shown in fig. 2 and 3, anesthetic is injected into the soft capsule 31 through the first channel 2, when the patient inhales, the spray head 3 moves forward to the glottis of the patient or a preparation administration place, meanwhile, the soft capsule 31 elastically retracts and extrudes the anesthetic in the soft capsule 31 back into the spray head 3 through the first through hole 32, and then the anesthetic is sprayed out through the second through hole 33 to anesthetize the glottis of the patient or the preparation administration place. It should be noted that, the seal wire is through setting up with the shower nozzle 3 of first passageway 2 sliding connection and set up soft bag 31 on shower nozzle 3, has realized on the one hand that the autonomous respiration of cooperation patient realizes the process of dosing to patient's glottis, has overcome the dependence that traditional intubate mode was revealed to the glottis, and on the other hand is dosed through the elasticity retractive force blowout of soft bag 31, helps controlling the dosage, and this kind of mode of dosing has realized even dosing, has improved the effect of dosing. Meanwhile, in order to make the anesthetic in the soft capsule 31 be entirely rapidly sprayed out, the administration effect is improved, and the first through hole 32 and the second through hole 33 may each include a plurality of through holes. In addition, according to the condition of the patient, the anesthetic can be supplemented into the soft bag 31 through the first channel 2 for multiple times of anesthesia, so that the complete anesthesia of the glottis of the patient is realized. The guide wire is a respiratory guided trachea cannula guide wire, so that dependence of a traditional cannula mode on glottis exposure is avoided, the guide wire can be matched with spontaneous breathing of a patient to administer and enter an airway, the administration effect is good, and the guide wire is suitable for various slow-induction general anesthesia cannulas retaining spontaneous breathing.

In order to further improve the administration effect, the soft capsule 31 is located at the side of the spray head 3, and the second through hole 33 is located at the front end of the spray head 3. This is favorable to when the patient inhales, and the soft bag 31 is through the whole blowout of elasticity retractive force with the anesthetic in the soft bag 31 and spouts to patient's glottis department, on the one hand helps better control and advances the dose, on the other hand is favorable to better spouting the anesthetic to patient's glottis position, improves the effect of dosing.

As a preferred embodiment, as shown in fig. 3, the housing 1 is provided with a groove 101 for accommodating the spray head 3; before administration, the spray head 3 is positioned in the groove 101; the spray head 3 may be wholly or partly disengaged from the recess 101 during administration; after administration, the spray head 3 is returned to the recess. The groove 101 can realize guiding and positioning functions of the nozzle 3 during the process that the guide wire stretches into or is pulled out of the patient, and the nozzle 3 is prevented from falling.

As a preferred embodiment, the nozzle 3 is provided with a plurality of first through holes 32 along the circumferential direction, so that the medicine can be conveniently and rapidly introduced or extruded into the soft capsule 31. One or more of the first through holes 32 may be in communication with the administration end 21.

As a preferred embodiment, the spray head 3 is uniformly provided with a plurality of second through holes 33 to facilitate dispersion of a drug such as an anesthetic.

As a preferred embodiment, as shown in fig. 5, the front end of the nozzle 3 is provided with a wireless probe 5, and the probe is preferably a mini video probe or a mini wireless video camera, for example, may be disposed near the second through hole 33, so that the condition of the patient can be checked from the forefront end of the nozzle 3 and fed back to the medical staff in time.

As a preferred embodiment, the buffer assembly 34 is disposed in the nozzle 3, so as to protect the nozzle 3.

Further, the buffer assembly 34 includes a fixing member 341 and an elastic member 342, and in fig. 1 to 5, in order to better illustrate the fixing member 341 so as to be distinguished from the inner cavity of the shower head 3 and the elastic member 342, the fixing member 341 is shown in hatching; the fixing member 341 is connected to the administration port 21, and the elastic member 342 is located between the fixing member 341 and an end of the ejection head 3 remote from the second through hole 33, that is, as shown in fig. 1 to 5, the elastic member 342 is located in the ejection head 3 and remote from the end of the second through hole 33.

Alternatively, as a preferred embodiment, the buffer assembly 34 includes a fixing member 341 and an elastic member 342, and the administration end 21 of the first channel 2 is formed inside the fixing member 341; the fixed member 341 is located between the elastic member 342 and the second through hole 33. As shown in fig. 2, when the elastic member 342 is in the released state, the fixing member 342 blocks the first through hole 32, and the administration end 21 communicates with the first through hole 32, and at this time, the medicine, such as anesthetic, can be injected into the soft capsule 31 through the first through hole 32 through the administration end 21 of the first passage 2; the medicine in the soft bag 31 does not leak into the spray head; as shown in fig. 3, when the patient breathes spontaneously, the nozzle 3 slides on the first channel 2, and moves toward the inhalation direction of the patient, the elastic member 342 is in a compressed state, exposing the first through hole 32, and the medicine in the soft bag 31 enters the nozzle 3 through the first through hole 32, and is inhaled by the patient through the second through hole 33; the method can be simply summarized as follows: when the elastic member 342 is released, the fixing member 341 blocks the first through hole 32, and the administration end 21 communicates with the first through hole 32; when the elastic member is compressed, the fixing member 341 is removed and the first through hole 32 is exposed.

In this embodiment, on one hand, the fixing member 341 and the elastic member 342 cooperate with each other to play a role in buffering, so as to avoid damage to the spray head 3 caused by collision, thereby being beneficial to ensuring better administration of the spray head 3 and improving administration effect; on the other hand, when there are a plurality of first through holes 32, the fixing member 341 realizes the blocking effect on other first through holes 32 except the first through holes 32 communicated with the first passage 2 (the administration end 21) when the anesthetic is conveyed to the soft capsule 31 through the first passage 2, so that the anesthetic is prevented from overflowing the soft capsule 31, and meanwhile, when the patient inhales, the nozzle 3 and the buffer assembly 34 relatively move, the fixing member 341 does not block the first through holes 32 any more, the effect that the anesthetic rapidly enters the nozzle 3 through the plurality of first through holes 32 is realized, the rapid administration is facilitated, and the administration effect is improved.

In order to further enhance the cushioning effect, the elastic member 342 is preferably a spring.

As a preferred embodiment, as shown in fig. 4, a section of the first channel 2 between the housing 1 and the fixing member 341 may be provided with an outer wall layer 6, the outer wall layer 6 having a thickness, and the shower head 3 sliding on the surface of the outer wall layer 6; the outer wall layer 6 may be provided as a unitary structure with the housing 1 and the fixture 341, as shown in phantom in fig. 4.

The thickness of the outer wall layer 6 is based on the principle that the guide wire is strong enough and is not easy to break; further, since the shower head 3 slides on the surface of the outer wall layer 6, the thickness of the outer wall layer 6 is also preferably abrasion resistant. The thickness of the outer wall layer 6 is not required too much, and the requirements can be met.

As a preferred embodiment, as shown in fig. 5, the fixing member 341 faces one end of the elastic member 342, or the outer wall layer 6 is provided with an engaging member 7 near the fixing member 341 and facing one end of the elastic member 342; the nozzle 3 is provided with a clamped piece 8 matched with the clamping piece 7; by the mutual restriction between the engaging piece 7 and the engaged piece 8, the medical accident caused by the dropping of the head 3 can be effectively prevented.

As a preferred embodiment, the engaging member 7 is a protruding bump, and is located at the outer edge of the fixing member 341 or the outer wall layer 6; the clamped piece 8 is also a convex lug and is close to the first channel 2; as shown in fig. 5. Since the various components of the guide wire are often made of medical plastics, they tend to be soft and somewhat resilient; when the spray head 3 moves rightwards excessively, the clamped piece 8 is clamped in the groove formed by the convex block of the clamped piece 7, so that the spray head 3 is prevented from continuing to move rightwards excessively and falling off and entering the patient.

As a preferred embodiment, as shown in fig. 6, a wrapping film 9 is disposed between the front end of the nozzle 3 and the housing 1, and the wrapping film 9 has a redundant length or has elasticity; when the patient inhales, the nozzle 3 is further prevented from being separated from the fixing member 341 while the nozzle 3 is ensured to be sucked out of the groove, thereby preventing medical accidents.

As a preferred embodiment, a first check valve 22 is disposed in the first channel 2; the one-way valve can control the direction of the medicine entering the spray head 3 without flowing backwards.

Further, a second passage 4 is axially provided in the housing 1. The second channel 4 in the embodiment has two functions, namely, after the cannula enters the airway, the airway can be rapidly dosed through the second channel 4, so that anesthesia of the airway of a patient is realized; secondly, when the second channel 4 does not administer medicine, the mode that the monitor is connected to one end of the second channel far away from the administration end can be used for monitoring the CO ₂ exhaled by a patient through the second channel 4, so that the purpose of identifying the airway is achieved, smooth intubation is facilitated, and the accuracy of intubation is improved.

In order to improve the administration effect and the accuracy of the monitoring, the second channel 4 is independent of the first channel 2.

As a preferred embodiment, a second one-way valve 41 is provided in the second channel 4, which can control the drug to enter the patient without flowing backwards.

As a preferred embodiment, the housing 1 of the guide wire is provided with a scale 10; generally, the guide wire is of an elongate overall construction, and therefore the various figures also show only a portion of the length schematically; the scale 10 may be used to measure the length of the guidewire into the patient to assist in determining if the guidewire has reached a designated location.

As a preferred embodiment, a support member, such as a stiff wire, guide wire or the like having a smaller diameter than the channel, may be inserted into the first channel 2 and/or into the second channel 4 to strengthen the tube wall; because the guide wire is often soft due to the slender structure, the circulation of the medicine is not very beneficial, and the medicine circulation and the control of the direction of the guide wire and the catheter cannula are often more convenient after the channel wall is hardened.

As a preferred embodiment, the fixing member 341 may be circumferentially provided with a sealing ring, that is, the sealing ring is located between the fixing member 341 and the inner wall of the nozzle 3, so that the purposes of water sealing and air sealing can be achieved.

A second embodiment of the present application provides an endotracheal tube 11, as shown in fig. 7, wherein the endotracheal tube 11 is provided with the endotracheal tube guide wire according to any of the previous embodiments, and the nozzle 3 of the guide wire is exposed from the front end of the tube.

The third embodiment of the application provides an application of the trachea cannula guide wire in trachea cannula, which adopts the trachea cannula guide wire in any embodiment, and comprises the following steps:

According to the position of the patient's glottis, the tracheal cannula guide wire is fixed, anesthetic is delivered to the soft bag 31 through the first channel 2, when the patient inhales, the spray head 3 moves forward to the patient's glottis, meanwhile, the soft bag 31 elastically retracts and the anesthetic in the soft bag 31 is sprayed out through the second through hole 33 to anesthetize the patient's glottis, and the process can be repeated for a plurality of times, such as 3 times;

The fixing position of the trachea cannula guide wire is redetermined towards the direction away from the spray head 3, the fixing position is determined according to the distance between the glottis and the airway of a patient, the trachea cannula guide wire is sucked into the airway of the patient through the inhalation force of the patient, and the trachea cannula guide wire is used for anesthetizing the airway of the patient through the second channel 4 and guiding the trachea cannula.

According to the method, surface anesthesia is achieved through adjustment of spontaneous breathing of a patient, and meanwhile, the guide wire is sucked into the airway through inhalation force to guide the tracheal catheter cannula, so that dependence of a traditional cannula mode on glottis exposure is avoided, difficulty of the tracheal cannula is reduced, and safety guarantee is provided for extremely difficult airway cannula.

Claims

1. The tracheal intubation guide wire comprises a shell (1), wherein a first channel (2) for injecting medicines is axially arranged in the shell (1), and is characterized in that the first channel (2) comprises a medicine feeding end (21) extending out of the shell (1), a spray head (3) which is slidably connected with the first channel (2) is sleeved at the medicine feeding end (21), a soft bag (31) for storing the medicines is coated on the periphery of the spray head (3), the soft bag (31) is communicated with the first channel (2) through a first through hole (32) arranged on the spray head (3), and a second through hole (33) for spraying the medicines in an inhalation state of a patient is further arranged on the spray head (3);

A buffer assembly (34) is arranged in the spray head (3), the buffer assembly comprises a fixing piece (341) and an elastic piece (342), when the elastic piece (342) is released, the fixing piece (341) blocks the first through hole (32), and the drug delivery end (21) is communicated with the first through hole (32); when the elastic member (342) is compressed, the fixing member (341) is removed and the first through hole (32) is exposed.

2. The tracheal cannula guide of claim 1, wherein the soft capsule (31) is located at the side of the nozzle (3), and the second through hole (33) is located at the front end of the nozzle (3).

3. The tracheal cannula guide of claim 1 or 2, wherein a buffer assembly (34) is arranged in the nozzle (3), the buffer assembly (34) comprises a fixing piece (341) and an elastic piece (342), the fixing piece (341) is connected with the administration end (21), and the elastic piece (342) is arranged between the fixing piece (341) and the nozzle (3) far away from the second through hole (33).

4. The endotracheal intubation guide wire according to claim 1 or 2, wherein the administration end (21) of the first channel is formed inside the fixture (341); the fixing member (341) is located between the elastic member (342) and the second through hole (33).

5. A tracheal cannula guidewire according to claim 3, characterized in that the elastic member (342) is a spring.

6. The endotracheal tube guide wire according to claim 4, wherein the elastic member (342) is a spring.

7. A tracheal cannula guide as claimed in claim 3, characterised in that the housing (1) is provided with a recess (101) for receiving the nozzle (3).

8. The endotracheal intubation guide according to claim 4, characterized in that the housing (1) is provided with a groove (101) for housing the nozzle (3).

9. A tracheal cannula guide as claimed in claim 3, characterized in that the nozzle (3) is provided with a plurality of first through holes (32) along the circumferential direction, and the front end of the nozzle (3) is provided with a plurality of second through holes (33).

10. The tracheal cannula guide of claim 4, wherein the nozzle (3) is provided with a plurality of first through holes (32) along the circumferential direction, and a plurality of second through holes (33) are provided at the front end of the nozzle (3).

11. A tracheal cannula guide as claimed in claim 3, characterized in that a section of the first channel (2) between the housing (1) and the fixture (341) is provided with an outer wall layer (6), said outer wall layer (6) having a thickness, said nozzle (3) sliding over the surface of the outer wall layer (6).

12. The endotracheal intubation guide according to claim 11, wherein the outer wall layer (6) is provided as a unitary structure with the housing (1) and the fixture (341).

13. The endotracheal intubation guide according to claim 4, characterized in that a section of the first channel (2) between the housing (1) and the fixture (341) is provided with an outer wall layer (6), said outer wall layer (6) having a thickness, said nozzle (3) sliding on the surface of the outer wall layer (6).

14. The endotracheal intubation guide according to claim 13, wherein the outer wall layer (6) is provided as a unitary structure with the housing (1) and the fixture (341).

15. The endotracheal intubation guide wire according to any of claims 11-14, wherein the fixing member (341) is provided with a snap member (7) facing one end of the elastic member (342) or one end of the outer wall layer (6) close to the fixing member (341) and facing the elastic member (342); the spray head (3) is provided with a clamped piece (8) matched with the clamping piece (7).

16. The endotracheal intubation guide wire according to claim 15, wherein the engaging member (7) is a raised bump located at the outer edge of the fixing member (341) or the outer wall layer (6); the clamped piece (8) is also a convex lug and is close to the first channel (2).

17. The endotracheal tube guide wire according to claim 1, wherein a second channel (4) is axially provided in the housing (1).

18. The endotracheal tube guide wire according to claim 17, wherein the second channel (4) is independent from the first channel (2); a first one-way valve (22) is arranged in the first channel (2); a second one-way valve (41) is arranged in the second channel (4).

19. The endotracheal tube guide wire according to claim 17, wherein a support is provided in the first channel (2) and/or in the second channel (4).

20. The tracheal cannula guide wire according to claim 17, wherein the guide wire housing (1) is provided with graduations (10); the front end of the spray head (3) is provided with a wireless probe (5); a wrapping film (9) is arranged between the front end of the spray head (3) and the shell (1), and the wrapping film (9) has redundant length or elasticity.

21. The endotracheal tube guide wire according to claim 4, wherein the fixing member (341) is circumferentially provided with a sealing ring.

22. An endotracheal tube, characterized in that, the endotracheal tube (11) is provided with an endotracheal tube guide wire according to any of claims 1 to 21, wherein the nozzle (3) of the guide wire is exposed from the front end of the endotracheal tube.