Visual nasal tracheal catheter

Abstract

The visual nasal tracheal catheter comprises a catheter body, the air inlet end of the catheter body is connected with a breathing machine connector, and the air outlet end of the catheter body is provided with an arc-shaped insertion part. Air vents are formed in two sides of the insertion part to form an arch-bridge-shaped front end, and a camera assembly is arranged at the arch-bridge-shaped front end; a first air bag is arranged on the catheter body close to the air outlet end; a second air bag is arranged in the middle section of the catheter body; a bending structure is arranged at the end, close to the breathing machine connector, of the catheter body. The two sides of the insertion part at the front end of the visible nasal tracheal catheter are provided with the air vents, the top end of the visible nasal tracheal catheter forms the arch-bridge-shaped front end, and when the ventilation catheter is inserted into a nasal cavity, the arch-bridge-shaped front end serves as the foremost end to make contact with the nasal cavity and cannot scratch nasal mucosa; the camera assembly is arranged at the front end of the arch bridge shape, visualization of the nasopharyngeal catheter insertion process is achieved, and therefore damage to nasal mucosa in the insertion process is effectively reduced or avoided, and the one-time insertion success rate of the nasotracheal catheter is remarkably increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the auxiliary ventilation mediation equipment field especially, relate to a visual nasal tracheal catheter. BACKGROUND

[0002] Nasal tracheal intubation is a common tracheal intubation technique in clinic, and is mostly limited to oral cavity, oral cavity operation, neck operation to provide a good operation field for the operator to facilitate operation. At present, the nasal tracheal intubation in clinic mostly uses ordinary tracheal catheter, and the ordinary tracheal catheter has the following defects: first, the ordinary tracheal catheter is hard and has poor shaping property, and it is difficult to fit the flat structure of the nasal cavity; second, the catheter has a sharp inclined angle at the air outlet end when inserted through the nose, which can easily scratch the nasal septum, the middle turbinate and the inferior turbinate, etc., resulting in damage to the nasal mucosa, even bleeding, and the risk of aspiration of blood into the airway; third, during the operation, the part of the nasal tracheal catheter outside the nose is usually located at the patient's oral cavity, which hinders some surgical operations through the mouth. Fourth, the insertion process is not visible, and the one-time insertion success rate is low, and the operation is not convenient. SUMMARY

[0003] The utility model discloses to the prior art nasal tracheal catheter can easily scratch the nasal mucosa and the technical problem that the insertion process is not visible, and provides a kind of visual nasal tracheal catheter, which is equipped with visual device at front end, is convenient for nasal insertion, and can avoid mucosa damage, and significantly improve the one-time insertion success rate.

[0004] To achieve the above purpose, the utility model adopts the technical scheme that:

[0005] A kind of visual nasal tracheal catheter, including catheter body, the air inlet end of the catheter body is connected with breathing machine connector, and the air outlet end of catheter body is provided with circular-arc insertion part;The both sides of the insertion part are provided with ventilation port, so that the top end of insertion part forms arch bridge shape front end, and camera assembly is arranged on arch bridge shape front end;

[0006] The first air bag is arranged at the position close to the air outlet end of the catheter body, and the second air bag is arranged at the middle section of the catheter body;

[0007] The end close to breathing machine connector of the catheter body is provided with bending structure.

[0008] As preferred, the camera assembly includes a miniature camera and a lamp group, the arch bridge shape front end is provided with a mounting hole for mounting the camera assembly, and the catheter body is provided with a line connected to the camera assembly in the pipe wall.

[0009] As preferred, the bending structure includes a deformable metal sheet arranged on the side wall of the catheter body.

[0010] As preferred, the bending structure comprises a fixing belt, one end of the fixing belt is connected to the catheter body, and the catheter body is provided with a fixing belt fixing buckle near the respirator joint.

[0011] As preferred, the bending structure comprises a corrugated telescopic tube sleeved on the catheter body near the respirator joint end.

[0012] As preferred, the distance between the bending structure and the top end of the catheter body gas outlet end is 0.68L-0.72L, and L is the total length of the catheter body.

[0013] As preferred, the distance between the second air bag and the top end of the catheter body gas outlet end is 8.5cm-19.5cm.

[0014] As preferred, the catheter body, the first air bag and the second air bag are all made of soft plastic or rubber, and the inner and / or outer surfaces of the catheter body are coated with a super-smooth coating.

[0015] As preferred, the catheter body is provided with an inflation channel communicating the first air bag and the second air bag in the tube wall, and the inflation channel is connected to an inflation bag at the end, the inflation bag comprises a bag and a connecting tube at the air inlet end of the bag, and the inner wall of the connecting tube is provided with a protrusion.

[0016] Compared with the prior art, the advantages and positive effects of the utility model are:

[0017] The two sides of the insertion part of the visible nasal tracheal catheter are provided with air vents, so that the top end of the insertion part forms an arch bridge-shaped front end, when the ventilation catheter is inserted into the nasal cavity, the arch bridge-shaped front end serves as the front end and contacts the nasal cavity, and will not scratch the nasal cavity mucosa; when the ventilation catheter enters the narrow part of the nasal cavity, the arch bridge-shaped front end is suitable for the flat structure of the nasal cavity, so that it can smoothly pass through the narrow position. The two air vents can ensure the ventilation amount of the left and right lungs in the trachea, and improve the ventilation effect.

[0018] The arch bridge-shaped front end is provided with a camera assembly, the insertion path can be clearly seen through the miniature camera and lamp group, the nasopharyngeal catheter insertion process is visualized, so that damage to the nasal cavity mucosa in the insertion process is effectively reduced or avoided, and the one-time intubation success rate is significantly improved.

[0019] The double air bags are arranged, and if the air outlet end of the ventilation catheter is curled during the process of being placed into the nasal cavity, a sharp angle is formed at the curled position, so that the nasal septum, the middle turbinate and the inferior turbinate are damaged during the placement process. At this time, the first air bag is inflated to expand the nasal cavity space, so that the air outlet end can be restored by the elastic force, and the nasal mucosa can be prevented from being damaged. The amount of gas in the first air bag can be adjusted under the vision, so that the end of the air outlet end is aligned with the glottis, that is, the damage to the glottis is reduced, and the smoothness and convenience of tracheal intubation are improved, so that the success rate of one-time tracheal intubation is improved. The second air bag is located at the nasal turbinate after being inflated, and has a fixing effect, so that the ventilation catheter can be prevented from being pulled out by external force.

[0020] The bending structure is arranged at the air inlet end of the visible nasal tracheal catheter, so that the breathing machine connector is away from the mouth of the patient according to the needs of the operation and the actual situation of the patient, and enough space is left for the operation. At the same time, the patient's alae nasi can be prevented from being scratched by the catheter body and the breathing machine connector part, so as to cause pain or discomfort of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the utility model embodiment 1;

[0022] Figure 2 It is a partial structural schematic view of the utility model embodiment 1;

[0023] Figure 3 It is a structural schematic view of the utility model embodiment 1;

[0024] Figure 4 It is a structural schematic view of the utility model embodiment 2;

[0025] Figure 5 It is a structural schematic view of the utility model embodiment 3;

[0026] In the above figures, 1 is a catheter body;11 is an insertion part;13 is an arch bridge-shaped front end;15 is a camera assembly;16 is a line;17 is a visible device connector;2 is a breathing machine connector;3 is a first air bag;4 is a second air bag;5 is an inflation channel;6 is an inflation bag;61 is an inflation pipe;62 is an air bag bag;63 is a connecting pipe;631 is an upper ring;632 is a lower ring;633 is a pressing column;634 is a check ring;635 is a convex part;7 is a deformable metal sheet;8 is a fixing band;9 is a fixing buckle;10 is a corrugated expansion pipe. DETAILED DESCRIPTION

[0027] In order to better understand the utility model, the following will be specifically described in combination with the drawings and examples.

[0028] Example 1

[0029] As Figure 1 ,Figure 2 As shown, a visual nasal tracheal catheter comprises a catheter body 1, a breathing machine joint 2 for connecting the breathing machine outlet pipeline is connected to the air inlet end of the catheter body 1, and an arc-shaped insertion part 11 is arranged at the air outlet end of the catheter body 1. Ventilation ports are arranged on both sides of the insertion part 11, so that the top end of the insertion part 11 forms an arch bridge-shaped front end 13. The two ventilation ports can ensure sufficient ventilation and ensure smooth tracheal intubation. When the ventilation catheter is inserted into the nasal cavity, the arch bridge-shaped front end 13 can smoothly pass through, and the arch bridge-shaped front end 13 contacts the nasal cavity as the frontmost end, which is more suitable for the flat structure of the nasal cavity and will not scratch the nasal mucosa.

[0030] The top end of the arch bridge-shaped front end 13 is provided with a camera assembly 15, which comprises a miniature camera, and a LED lamp group is mounted at the front end of the miniature camera. The miniature camera can display the picture during the insertion process, and the LED lamp group plays a role of illumination during the process. A line 16 for connecting the camera is arranged in the pipe wall of the catheter body 1, the end of the line 16 extends out of the catheter body and is connected with a visual equipment joint 17. The line 16 supplies power to the lamp group of the camera assembly and transmits signals, and the visual equipment joint can be connected with a visual equipment, and the picture content can be displayed through the visual equipment. In order to prevent the camera assembly 15 from being contaminated by body fluids, a transparent protective shell is arranged at the front end of the camera assembly 15. Medical personnel can observe the intubation process through the camera during intubation, avoid causing the nasal cavity of the patient to bleed or damage the airway of the patient during insertion, and significantly improve the one-time insertion success rate of the nasal tracheal catheter.

[0031] A first air bag 3 is arranged at a position close to the air outlet end of the catheter body 1, and a second air bag 4 is arranged in the middle of the catheter body 1. The distance between the second air bag 4 and the air outlet end of the catheter body 1 is 8.5cm-19.5cm, which is suitable for patients of different ages and different body types. The catheter body 1 forms a certain arc when it is injection molded, which is consistent with the human physiological characteristics of the nasal ventilation path, and is convenient for insertion into the nasal cavity. The outer diameter of the first air bag 3 and the second air bag 4 is set to 10mm-40mm in multiple specifications, and different air bag sizes can be suitable for different patients. During the process of placing the ventilation catheter into the nasal cavity, if the air outlet end of the catheter is curled, a sharp angle will be formed at the bending position, which will cause the nasal septum, the middle turbinate and the inferior turbinate to be scratched and damaged during the placement process. At this time, inflating the first air bag 3 to expand the nasal cavity space can make the arch bridge part of the air outlet end of the catheter restore by the elastic force, which can prevent the nasal mucosa from being damaged. By adjusting the amount of gas in the first air bag 3, the end of the air outlet end can be aligned with the glottis under the visual condition, which can not only reduce the damage to the glottis, but also improve the smoothness and convenience of tracheal intubation. The second air bag 4 is located at the nasal turbinate after being inflated, which plays a fixing role and can effectively prevent the ventilation catheter from falling out. In order to increase the anti-skid effect, the outer wall of the second air bag 4 can be provided with anti-skid lines.

[0032] In order to inflate the first air bag 3 and the second air bag 4, the tube wall of the conduit body 1 is provided with an inflation channel 5 which communicates the first air bag 3 and the second air bag 4, and the inflation channel 5 is connected to an inflation bag 6 at the end. The first air bag 3 and the second air bag 4 can be inflated and deflated simultaneously or independently. When inflated and deflated simultaneously, one inflation channel 5 and one inflation bag 6 are provided. When inflated and deflated independently, two inflation channels 5 which respectively communicate the first air bag 3 and the second air bag 4 are provided, and the end of each inflation channel 5 is connected to one inflation bag 6. Alternatively, only one channel is provided, but two inflation tubes 61 are installed in the channel, one inflation tube 61 is inserted into the first air bag 3, and the other inflation tube 61 is inserted into the second air bag 4, and the other end of the two inflation tubes 61 is connected to one inflation bag 6.

[0033] The conduit body 1, the first air bag 3 and the second air bag 4 are made of soft plastic such as polyurethane, polyphosphate, polybutylene succinate, polylactic acid, carboxymethyl cellulose, polyvinyl chloride, polyethylene, polypropylene carbonate, styrene-butadiene-styrene copolymer, or rubber such as silicone. The soft conduit body 1 has the possibility of being crushed after the air bag is inflated to a certain pressure, which will greatly affect the ventilation effect. The conduit body 1 of the present embodiment is provided with spring wires (not shown in the figure) in the tube wall, which can make the conduit freely bend in the axial direction and keep circular in the radial direction, and not be crushed. The specific position of the spring wires can be set after the insertion part 11 to before the breathing machine joint 2, or set in front of the second air bag to before the breathing machine joint 2.

[0034] As Figure 3As shown, the inflatable bag 6 includes a bag 62 and a connecting pipe 63 at the air inlet end of the bag 62, the connecting pipe 63 is provided with a cap to close the opening thereof, and the end of the bag 62 is connected to the inflation pipe 61. The inner wall of the connecting pipe 63 is provided with an upper ring 631 and a lower ring 632, and a pressing column 633 is installed in the connecting pipe 63, the middle part of the pressing column 633 is provided with a stop ring 634, and a sealing gasket is installed on the stop ring 634. The stop ring 634 is located between the upper ring 631 and the lower ring 632, and a spring is installed between the stop ring 634 and the lower ring 632, which is sleeved on the lower part of the pressing column 633. Therefore, the sealing gasket on the pressing column 633 abuts against the upper ring 631 under the elastic force of the spring, forming a self-sealing structure to realize the sealing of the connecting pipe 63 and the bag part. When it is needed to inflate the first bag 3 and the second bag 4, the front end of the needle tube is pressed downward to press the pressing column 633, and the sealing gasket moves downward to ventilate. After deflation, it is naturally sealed, and the bag will not leak. When it is needed to inflate the inflatable bag, the syringe or other inflation device is inserted into the connecting pipe. Since there is no close connection between the connecting pipe and the syringe, they are easy to fall off and are not easy to operate. In the embodiment, the inner wall of the connecting pipe of the inflatable bag is provided with a protruding part 635. When the syringe is inserted into the connecting pipe, it can be fixed on the inflation pipe due to the extrusion of the protruding part 635 and will not fall off. The protruding part 635 can be scattered and point-shaped or ring-shaped.

[0035] The outer side of the pipe wall of the catheter body 1 is also provided with a scale line, which can see the insertion depth during the insertion process, facilitating the operation.

[0036] The catheter body 1 is provided with a bending structure near the end of the respirator joint 2. The starting part of the bending structure is 0.68L-0.72L away from the top end of the air outlet end of the catheter body 1, and L is the length of the catheter body 1.

[0037] The structure of the bending part can have various forms. For example, the catheter can be molded with a certain bending degree when the catheter body 1 is injection molded, so that the end of the catheter near the respirator joint 2 remains in a bent state. However, the bending degree cannot be changed when the catheter is injection molded into a bent shape, and it cannot be adjusted according to the individual conditions of the patient. The bending structure of the embodiment includes a deformable metal sheet 7, which is arranged in the side wall of the catheter body 1. The specific position is that the front end of the metal sheet (the end near the air outlet end) is 0.68L-0.72L away from the front end of the catheter body 1, and L is the length of the catheter body 1. Medical staff can make the respirator joint 2 away from the mouth by bending the deformable metal sheet 7 according to the needs of the operation and the actual conditions of the patient, leaving enough space for the operation. At the same time, it can avoid the catheter body 1 and the respirator joint 2 to scratch the alae nasi part of the patient, causing pain or discomfort of the patient.

[0038] The outer surface of the catheter body 1 is coated with a super- slippery coating to reduce the friction coefficient of the inner and outer surfaces of the catheter, and the super- slippery coating is selected from one of medical- grade polyvinylpyrrolidone, polyoxyethylene hydrophilic polymer, glycerol and polyethylene glycol. The inner surface of the catheter body 1 can also be coated with a super- slippery coating.

[0039] Embodiment 2

[0040] The structure of this embodiment is basically the same as that of Embodiment 1, except that the bending structure is different. As shown in Figure 4 The bending structure includes a fixing belt 8 connected to the catheter body 1 at one end. The fixing method can be injection molding in the side wall of the catheter body 1, or adhesion to the side wall of the catheter body 1, or a retaining ring can be provided on the catheter body 1, and the fixing belt 8 is arranged in a ring shape and sleeved on the catheter body 1, and the position is fixed by the retaining ring. The catheter body 1 is provided with a fixing buckle 9 near the respirator joint 2, and the fixing buckle 9 is L-shaped. By binding the free end of the fixing belt 8 to the fixing buckle 9 and adjusting the length appropriately, the part of the catheter near the respirator joint 2 can be bent up and form a suitable curvature.

[0041] Embodiment 3

[0042] The structure of this embodiment is basically the same as that of Embodiment 1, except that the bending structure is different. As shown in Figure 5 The bending structure includes a corrugated expansion tube 10 sleeved on the catheter body 1 near the respirator joint end. The corrugated expansion tube 10 can shape the catheter body 1 into a curved structure, and the curvature and bending position can be adjusted at will. The corrugated expansion tube 10 can be made of plastic or metal as long as it can be shaped.

[0043] The insertion part 11 of the visible nasal tracheal catheter described in the above embodiments is provided with two ventilation ports on both sides, so that the top end of the insertion part 11 forms an arch bridge shaped front end 13. When the ventilation catheter is inserted into the nasal cavity, the arch bridge shaped front end 13 serves as the foremost end and contacts the nasal cavity, without scratching the nasal mucosa. When the ventilation catheter enters the narrow part of the nasal cavity, the arch bridge shaped front end 13 fits the flat structure of the nasal cavity, so that it can smoothly pass through the narrow position. The two ventilation ports can ensure the ventilation volume of the left and right lungs in the trachea, and improve the ventilation effect.

[0044] The top end of the arch bridge shaped front end 13 is provided with a camera assembly 7. During intubation, medical personnel can observe the intubation process through the camera, which can avoid bleeding or damage to the patient's airway during insertion, and can also assist in completing tracheal intubation under visual conditions, significantly improving the success rate of one-time intubation.

[0045] The double air bags are arranged, if the air outlet end of the ventilation catheter is curled during the process of being placed into the nasal cavity, the sharp angle is formed at the curled position, so as to cause the damage of the nasal septum, the middle turbinate and the inferior turbinate during the process of being placed into the nasal cavity, at this time, the first air bag is inflated to expand the nasal cavity space, so that the air outlet end is restored by the elastic force, and the damage of the nasal cavity mucosa can be prevented, the amount of the gas in the first air bag can be adjusted under the vision, so that the end of the air outlet end is aligned with the glottis, that is, the damage of the glottis is reduced, and the smoothness and convenience of the tracheal intubation are improved, the second air bag is located at the nasal turbinate after being inflated, and the fixing effect is achieved, so that the ventilation catheter can be prevented from being taken out due to the external force.

[0046] The bending structure is arranged at the air inlet end of the visible nasal tracheal catheter, the breathing machine connector can be away from the mouth of the patient according to the operation needs and the actual situation of the patient, and enough space is left for the operation, meanwhile, the patient's alae nasi can be prevented from being scratched by the catheter and the breathing machine connector, and the pain or discomfort of the patient is caused.

[0047] The visible nasal tracheal catheter optimizes and improves the performance of the common tracheal intubation, and expands the application range of the indication, is suitable for almost all types of difficult airway patients except the nasal obstruction and the congenital nasal obstruction, such as the patients with nasal snoring, ankylosing spondylitis, mucopolysaccharidosis, mallampati classification III to IV, poor neck mobility, head and tongue hypertrophy and the like, and is especially suitable for the patients with oral tracheal intubation and the general general anesthesia operation patients, in particular, is suitable for the slow induction of the conscious patient, improves the safety of the anesthesia induction period and the recovery period, and in the crisis of the mask pressurization ventilation obstacle, the technology can save the patient's life, the technology can obviously assist the professional safety of the anesthesia career, and is suitable for large-scale clinical popularization and use.

[0048] The above is only a preferred embodiment of the utility model, and does not limit other forms of the utility model, any skilled person in the art can change or modify the equivalent embodiment applied to other fields by using the disclosed technical content, but any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belongs to the protection range of the technical scheme of the utility model.

Claims

1. A visual nasal endotracheal tube, characterized in that: The device includes a catheter body, an air inlet end of which is connected to a ventilator connector, and an air outlet end of which is provided with an arc-shaped insertion part; air ports are provided on both sides of the insertion part to form an arch-shaped front end at the top of the insertion part, and a camera assembly is provided on the arch-shaped front end. A first airbag is provided near the air outlet end of the conduit body, and a second airbag is provided in the middle section of the conduit body. The catheter body has a bent structure at one end near the ventilator connector.

2. The visual nasal endotracheal tube according to claim 1, characterized in that: The camera assembly includes a miniature camera and a light group. The arched front end is provided with a mounting hole for installing the camera assembly, and the conduit body has a line inside the tube wall for connecting the camera assembly.

3. The visual nasal endotracheal tube according to claim 1, characterized in that: The bending structure includes a deformable metal sheet disposed on the side wall of the catheter body.

4. The visual nasal endotracheal tube according to claim 1, characterized in that: The bending structure includes a fixing strap, one end of which is connected to the catheter body. The catheter body is provided with a fixing buckle near the ventilator connector.

5. The visual nasal endotracheal tube according to claim 1, characterized in that: The bending structure includes a corrugated telescopic tube fitted onto the catheter body near the ventilator connector end.

6. The visual nasal endotracheal tube according to claim 1, characterized in that: The distance between the bent structure and the top of the air outlet of the catheter body is 0.68L-0.72L, where L is the total length of the catheter body.

7. The visual nasal endotracheal tube according to claim 1, characterized in that: The distance between the second airbag and the top of the air outlet of the catheter body is 8.5cm–19.5cm.

8. The visual nasal endotracheal tube according to claim 1, characterized in that: The catheter body, the first airbag, and the second airbag are all made of soft plastic or rubber, and the inner and / or outer surfaces of the catheter body are coated with a super-slippery coating.

9. The visual nasal endotracheal tube according to claim 1, characterized in that: A spring wire is installed inside the wall of the catheter body.

10. The visual nasal endotracheal tube according to claim 1, characterized in that: The inner wall of the catheter body is provided with an inflation channel that connects the first airbag and the second airbag respectively. The end of the inflation channel is connected to the airbag. The airbag includes an airbag bag and a connecting tube located at the air inlet end of the airbag bag. The inner wall of the connecting tube is provided with a protrusion.

Images