CN215961636U

CN215961636U - Flexible intranasal endotracheal tube

Info

Publication number: CN215961636U
Application number: CN202022971422.7U
Authority: CN
Inventors: 罗伟
Original assignee: First Affiliated Hospital of Guangzhou University of Chinese Medicine
Current assignee: First Affiliated Hospital of Guangzhou University of Chinese Medicine
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2022-03-08
Anticipated expiration: 2030-12-11

Abstract

The utility model provides a bendable transnasal tracheal catheter, which comprises: the device comprises a tracheal catheter, an air bag, a bending traction device, an air injector and a catheter joint; endotracheal tube is for being provided with the single chamber pipe of pipe ventral side pipeline and pipe dorsal side pipeline, includes: a flex-designed catheter tip, a bendable catheter front end, a catheter body, a catheter bendable portion, and a connector connection end; the traction wire penetrates out of the ventral pipeline of the catheter, is fixed on the front end of the catheter and is connected with the traction pull ring; the gas injector is connected to the air bag through a pipe back side pipeline, an inner pipe of the pipe back side pipeline runs in the pipe back side pipeline body, and the air bag is connected with a gas injection pressure ball arranged in the gas injector. The bendable part of the catheter can be adjusted according to clinical requirements, the soft lens intubation technique is realized, the clinical operation is convenient, the occurrence rate of epistaxis caused by intubation through nose is reduced, the success rate of the first tracheal intubation is improved, and the over-high pressure of the air bag is prevented.

Description

Flexible intranasal endotracheal tube

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a bendable transnasal tracheal catheter.

Background

Nasal intubation is a common clinical endotracheal intubation technique, and the indications of the technique include the following aspects: those who cannot intubate the trachea through the mouth (difficult opening, stiff joints); those with huge masses in the oral cavity; oral and/or nearby lesions; large amount of secretion or blood in oral cavity; specially operating in the oral or nasal cavity. The common clinical technique for intubation through the nose and the trachea comprises the following steps: intubation with soft or fiberoptic bronchoscopes or guided intubation, general or visual laryngoscope intubation, and blind intubation.

The existing special operators who are clinically used for oral cavity or nasal cavity and the like often select the molded transnasal tracheal catheter, the catheter consists of a molded lengthened catheter, an air bag and a connector, the catheter is made of polyvinyl chloride PVC materials, nontoxic polyvinyl chloride PVC is proved to be safely used for medical appliances, and the molded bent catheter is beneficial to bypassing the operation position, so that the tracheal catheter is prevented from obstructing the operation and the tracheal catheter is prevented from being accidentally injured by the operators. The shaped transnasal tracheal catheter can cope with common clinical situations, however, each patient has individual difference, especially under the pathological conditions of different diseases, the single shaping can not face various clinical situations, and obvious defects can occur when special situations are met: the length of the tracheal catheter is insufficient; improper and unadjustable position of the bendable portion; the intubation technique of soft intubation and fiberbronchoscope cannot be used; the front end of the trachea can not move; the material of the polyvinyl chloride PVC is difficult to shape; the catheter is often rotated through the glottis; the bladder pressure is not easily controlled.

Therefore, how to provide a bendable transnasal tracheal catheter is a technical problem to be solved urgently in the technical field.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problems, an object of the present invention is to provide a bendable transnasal endotracheal tube, so as to solve the above technical problems in the prior art.

The utility model relates to a bendable transnasal tracheal catheter, which comprises a tracheal catheter, an air bag, a bending traction device, an air injector and a catheter joint;

endotracheal tube for being provided with the double-pipe way list chamber pipe of pipe ventral side pipeline and pipe dorsal side pipeline, includes: the catheter comprises a catheter tip, a catheter front end, a catheter body, a catheter bendable part and a connector connecting end, wherein a traction opening is formed in one end, close to the connector connecting end, of the catheter ventral pipeline;

the curved draw gear, comprising: a traction wire and a traction pull ring; the traction wire penetrates through the ventral pipeline of the catheter, one end of the traction wire is fixed on the front end of the catheter, and the other end of the traction wire extends out of the traction opening and is connected with the traction pull ring; the pull tab is located outside the pull opening;

the air bag is coated on the outer side of the tube wall of the tube body of the tracheal catheter and is close to the front end of the catheter;

the inflator is connected to the air bag through a conduit back side pipeline;

the conduit joint is connected with the joint connecting end.

Further, the gas injector comprises a pipe back side pipe inner pipe, a gas injection pressure ball and a gas injection port, wherein the pipe back side pipe inner pipe runs in the pipe back side pipe body, one end of the pipe back side pipe inner pipe is connected with the gas bag, the other end of the pipe back side pipe inner pipe is connected with the gas injection pressure ball, and the gas injection pressure ball is arranged in the gas injector body.

Further, the front end of the catheter adopts a polyureaurethane material.

Further, the catheter tip is designed with a flex-tip.

Further, the air bag is a high-cylindrical low-pressure high-capacity air bag.

Further, the bendable portion of the catheter is made of a polyureaurethane material.

Furthermore, reinforcing steel wires in a net-shaped grid are arranged inside the bendable part of the catheter.

The utility model has the beneficial effects that:

the utility model can solve the problems of nasal intubation in most clinical cases:

1) in the case of an endotracheal tube which requires a small diameter and a long tube, as is often the case in adult patients with endotracheal tumors, straightening of the bendable portion of the tube can be accomplished.

2) When the soft intubation mirror and the bronchofiberscope intubation technique are needed for various reasons (opening difficulty) during the transnasal intubation, the mirror can be smoothly placed into the catheter by straightening the bendable part of the catheter.

3) The bendable part of the catheter can be adjusted according to clinical requirements, and when the bendable part is used for special operations such as oral surgery, nasal surgery and the like, the problems that operation is influenced and poor fixation is caused due to the fact that the bending position is not suitable can be effectively avoided.

4) The reinforcing steel wires of the net-shaped grids can effectively avoid the blockage of the conduit caused by the bending of the bendable part to different directions.

5) The front end of the catheter is lifted by pulling the traction ring, so that the physiological bending of the nasopharynx part and the clinical situation of high glottis are effectively responded, and the situations of tissue damage, bleeding and the like caused by intubation are reduced.

6) The air bag pressure is prevented from being too high by inflating the pressure ball.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a flexible transnasal endotracheal tube according to a disclosed embodiment of the utility model;

FIG. 2 is a schematic view of a configuration of an insufflator according to FIG. 1;

fig. 3 is a schematic structural view of a cross section of a ventral (with a traction wire inside), dorsal (with a catheter dorsal tube inside) double tube and hollow single lumen endotracheal tube according to fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a schematic structural view of a bendable transnasal endotracheal tube according to an embodiment of the present disclosure is shown, as shown in fig. 1, the bendable transnasal endotracheal tube including: a tracheal tube, an air sac 20, a bending traction device, an insufflator 40 and a tube joint 50; this endotracheal tube for being provided with the double-pipe-chamber pipe of pipe ventral side pipeline 11 and pipe dorsal side pipeline 12 includes: a catheter tip 17, a catheter tip 13, a tube body 14, a catheter bendable portion 16, and a connector connection end 15, the catheter ventral duct 11 being provided with a pull opening 33 at an end adjacent to the connector connection end 15; the bending traction device comprises: a pull wire 31 and a pull tab 32; the traction wire 31 penetrates through the ventral duct 11 of the catheter, one end of the traction wire is fixed on the front end 13 of the catheter, and the other end of the traction wire extends out of the traction opening 33 and is connected with the traction pull ring 32; the pull tab 32 is located outside the pull opening 33; the air bag 20 is coated on the outer side of the tube wall of the tracheal catheter and is close to the front end 13 of the tracheal catheter; the insufflator 40, connected to the balloon 20 through a conduit back side tube 12; the catheter adapter 50 is connected to the adapter connection end 15.

The position 2 to 4cm away from the tip 17 of the catheter is the front end 13 of the catheter, the front end 13 of the catheter adopts a polyurea amine ester material which can be safely used for medical clinic and has high flexibility, the flexibility of the front end of the catheter can be increased, the success rate of the tracheal catheter passing through the nasal cavity is improved, the front end 13 of the catheter can be bent, when the tracheal catheter is inserted through the nose, if the tracheal catheter passes through the nasal cavity and is blocked, the traction pull ring 32 can be pulled, the front end 13 of the catheter is bent through the traction of the traction wire 31, and the tracheal catheter can more easily pass through the physiological bending of the nasal cavity; in addition, the patient who deals with the higher glottis position can also raise the catheter tip 17 and face the glottis by the above method (pulling the traction pull ring 32 and bending the catheter front end 13 under the traction action of the traction wire 31), so that the success rate of the first endotracheal intubation is increased.

In addition, the tip 17 of the catheter adopts a flex-tip design, which is helpful for the transnasal tracheal catheter to pass through the physiological bending of the nasopharynx part and simultaneously reduce the damage to the mucosa of the nasopharynx part and the throat part, the shape design similar to the shape design of the olecranon is very similar to the physiological shape of the glottis, the success rate of the transnasal tracheal catheter when being sent into the trachea is increased, and the transnasal tracheal catheter is particularly used for the intubation technology of a visual laryngoscope, a fiber bronchoscope and the like.

The high-cylindrical low-pressure large-capacity air bag is selected as the air bag 20, the high-cylindrical low-pressure large-capacity air bag and the air injector 40 are connected through the conduit back side pipeline 12, the contact area of the air bag 20 and the trachea can be increased, the pressure intensity is reduced, and mucosal ischemia or necrosis caused by long-time pressing of the tracheal mucosa by the air bag is relieved.

Referring to FIG. 2, there is shown a schematic structural view of an insufflator according to FIG. 1, as shown in FIG. 2, comprising: the insufflator 40 and the conduit back side tube 12, the insufflator 40 comprising: the back-side duct inner tube 121 of the catheter runs through the body of the back-side duct 12 of the catheter, one end of the back-side duct inner tube 121 of the catheter is connected to the airbag 20, the other end of the back-side duct inner tube is connected to the gas injection pressure ball 41, and the gas injection pressure ball 41 is built in the body of the gas injector 40. Note that the state of the gas injection pressure ball 41 when it is expanded is indicated by a dashed line area 411.

Referring to fig. 3, a cross-sectional view of a ventral (with a pull wire inside), dorsal (with a catheter dorsal tube inside) double tube and hollow single lumen endotracheal tube according to fig. 1 is shown, as in fig. 3, in which the cross-sectional view includes: the catheter dorsal tube 42, the catheter dorsal tube inner tube 121, the tube body 14, the catheter ventral tube 11, and the pull wire 31. As can be seen from fig. 2 and 3, after the transnasal endotracheal tube is fed into the trachea and the position is determined to be appropriate, the air is injected into the balloon 20 through the injector 40 using a syringe to prevent the secretion of the upper airway and the contents of the stomach from flowing into the lungs.

During the process of injecting gas into the gas injection port 42, the gas injection pressure ball 41 begins to expand slowly, but when the high-cylindrical low-pressure large-capacity airbag (i.e. the airbag 20) is full of gas or the pressure is close to 20N, the gas will enter the gas injection pressure ball 41 from the high-cylindrical low-pressure large-capacity airbag through the conduit back side inner pipe 12, so that the gas injection pressure ball 41 rapidly expands to the size of the dotted line area 411, and finally the gas injection port 42 of the gas injector is blocked, and adverse reactions caused by the fact that the gas continues to be injected when the pressure of the airbag 20 is too high are prevented.

The bendable part 16 of the catheter is arranged between 18cm and 26cm away from the tip of the catheter, the bendable part 16 of the catheter is made of polyurea urethane materials, has certain flexibility and extensibility, can be adjusted according to clinical needs to realize bending in multiple directions, avoids the problem that the shaped transnasal tracheal catheter is shaped and cannot be adjusted, and when the tracheal catheter is sent to a proper position and fixed, the catheter only needs to be bent as required; in addition, the flexible part 16 can be straightened, so that the tracheal catheter can be sleeved in the soft intubation endoscope or the fiber bronchoscope, and the nasal intubation by using the soft intubation endoscope or the fiber bronchoscope is realized; it can also be used for special cases requiring a small inner diameter and a sufficient length. And the reinforcing steel wire 161 with the mesh grid is arranged inside, so that the tracheal catheter blockage caused by the fact that the tracheal catheter bending part 16 is bent towards different directions can be prevented.

In summary, the present invention provides a bendable transnasal endotracheal tube, comprising: the device comprises a tracheal catheter, an air bag, a bending traction device, an air injector and a catheter joint; endotracheal tube is for being provided with the single chamber pipe of pipe ventral side pipeline and pipe dorsal side pipeline, includes: a flex-designed catheter tip, a bendable catheter front end, a catheter body, a catheter bendable portion, and a connector connection end; the traction wire penetrates out of the ventral pipeline of the catheter, is fixed on the front end of the catheter and is connected with the traction pull ring; the gas injector is connected to the air bag through a pipe back side pipeline, an inner pipe of the pipe back side pipeline runs in the pipe back side pipeline body, and the air bag is connected with a gas injection pressure ball arranged in the gas injector. The bendable part of the catheter can be adjusted according to clinical requirements, the soft lens intubation technique is realized, the clinical operation is convenient, the occurrence rate of epistaxis caused by intubation through nose is reduced, the success rate of the first tracheal intubation is improved, and the over-high pressure of the air bag is prevented.

The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.

Claims

1. A bendable transnasal tracheal catheter comprising: the device comprises a tracheal catheter, an air bag, a bending traction device, an air injector and a catheter joint; the method is characterized in that:

the inflator is connected to the air bag through the conduit back side pipeline;

the conduit joint is connected with the joint connecting end.

2. The bendable transnasal tracheal tube of claim 1, wherein the insufflator comprises a tube inside tube on the back side of the tube running in the tube body on the back side of the tube, an insufflator pressure ball, and an insufflator port, wherein one end of the tube inside tube is connected with the air sac, the other end is connected with the insufflator pressure ball, and the insufflator pressure ball is internally arranged in the insufflator body.

3. The bendable transnasal tracheal tube of claim 1, wherein the forward end of the tube is of polyureaurethane material.

4. The bendable transnasal tracheal catheter of claim 1, wherein the balloon is selected from a high cylindrical low pressure high capacity balloon.

5. The bendable transnasal tracheal tube of claim 1, wherein the tube bendable portion is made of polyureaurethane material.

6. The bendable transnasal tracheal tube according to claim 1, wherein the bendable portion of the tube is internally provided with mesh-like grid of reinforcing wires.