Multifunctional nasopharynx ventilation catheter for breathing machine

Abstract

The invention discloses a nasopharynx ventilation catheter for a multifunctional breathing machine. The nasopharynx ventilation catheter comprises a flexible catheter body, an anti-bending supporting part, a dosing assembly, a sputum suction assembly, a monitoring assembly and an air bag mechanism. The air outlet end of the flexible conduit is provided with an antibacterial conduit head, and the air inlet end is provided with a connecting assembly; the antibacterial catheter head is provided with a hole channel assembly and a medicine feeding opening, and the flexible catheter is provided with a suction opening. The anti-bending supporting part is mounted on the inner wall of the flexible conduit; one end of the dosing assembly is communicated with the dosing port; one end of the sputum suction assembly is communicated with the suction port; the detection end of the monitoring assembly is located in the inner cavity of the flexible catheter and close to the duct assembly, and the monitoring assembly is used for monitoring the concentration of carbon dioxide in the oral and nasal cavity; the air bag mechanism comprises a first air bag, a second air bag and two air bag air supply assemblies. The device has the functions of drug delivery, sputum suction, carbon dioxide concentration monitoring and the like, meanwhile, the nasal mucosa can be free of damage or obviously relieved, the device can be conveniently inserted into the nasal cavity, the fixing effect is good, and the ventilation effect is good.

Description

Technical Field

[0001] The invention relates to the field of auxiliary ventilation mediating equipment during minimally invasive surgery, and in particular to a nasopharyngeal ventilation catheter for a multifunctional ventilator. Background Art

[0002] In minimally invasive surgery, nasal catheters have problems with poor ventilation and fixation, especially when painless fiber bronchoscopes and painless gastroenteroscopy occupy airway space during diagnosis and treatment, and blood oxygen saturation is prone to decrease. At this time, the anesthesiologist is often required to stand on the head to perform assisted ventilation under a mask, which will cause the anesthesiologist and endoscopist to compete for airway space, causing many inconveniences during intraoperative endoscopist operations and anesthesiologist ventilation or rescue. Therefore, how to avoid the phenomenon of endoscopy and anesthesiologists competing for the airway, facilitate ventilation management and obtain good ventilation effects, and facilitate various operations of endoscopists and anesthesiologists to treat patients in critical situations has become an important and urgent problem to be solved during painless minimally invasive surgery.

[0003] The structure of the nasopharyngeal ventilation catheter currently used for minimally invasive examination and treatment includes a flexible catheter, one end of which is an air outlet, and the other end is provided with an air inlet connector for connecting to a ventilator. The air outlet of the flexible catheter is set at an inclined angle to facilitate insertion into the nasal cavity, but the front end of the catheter is prone to scratching the nasal septum piriform area, middle turbinate and inferior turbinate during insertion into the nasal cavity, resulting in damage to the nasal mucosa and even bleeding, affecting the ventilation process, resulting in poor ventilation effect for patients under anesthesia, and bleeding will also affect the surgical field of the endoscopist. High-frequency jet oxygen ventilator can provide a high-frequency, low-tidal volume rapid jet airflow, which is easy to make the airflow pass through a small space. When the fiber bronchoscope occupies the road, it can maintain sufficient distal alveolar gas exchange. When respiratory depression occurs during painless endoscopic diagnosis and treatment, hypoxemia will not occur, and it will not cause excessive endogenous airway pressure, nor inhibit hemodynamic function. However, since the existing ventilation catheter cannot be well fixed in the nasal cavity, there is a risk that the ventilation catheter is easy to fall out.

[0004] In addition, traditional nasopharyngeal ventilation tubes often do not have the function of drug delivery, or the drug delivery method is complicated and inefficient. Medical staff need to use additional tools to deliver drugs, which not only increases the difficulty of operation, but also may affect the treatment effect because the drug cannot be delivered directly to the lesion area. At the same time, frequent drug delivery operations will also cause unnecessary pain and discomfort to patients.

[0005] Therefore, a multifunctional nasopharyngeal ventilation catheter for a ventilator is proposed. Summary of the invention

[0006] The object of the present invention is to provide a nasopharyngeal ventilation catheter for a multifunctional ventilator, aiming to solve or improve at least one of the above-mentioned technical problems.

[0007] To achieve the above object, the present invention provides the following solution: The present invention provides a nasopharyngeal ventilation catheter for a multifunctional ventilator, comprising:

[0008] A flexible catheter, wherein an antibacterial catheter head is installed on the air outlet end of the flexible catheter, and a connecting component is installed on the air inlet end; a channel component and a drug delivery port are provided on the antibacterial catheter head, and a suction port is provided on the flexible catheter;

[0009] an anti-bending support portion, the anti-bending support portion being mounted on the inner wall of the flexible conduit;

[0010] A drug delivery component, one end of which is connected to the drug delivery port and the other end of which extends out of the flexible catheter;

[0011] A sputum suction component, one end of which is connected to the suction port and the other end of which extends out of the flexible conduit;

[0012] A monitoring component, wherein the detection end of the monitoring component is located in the inner cavity of the flexible conduit and is disposed close to the channel component, and the output end of the monitoring component extends out of the flexible conduit, and the monitoring component is used to monitor the carbon dioxide concentration at the channel component;

[0013] An airbag mechanism, the airbag mechanism comprising a first airbag, a second airbag and two groups of airbag air supply components; the first airbag and the second airbag are both fixedly sleeved on the outer wall of the flexible catheter, and the first airbag is arranged close to the antibacterial catheter head;

[0014] Wherein, the two groups of airbag air supply components are respectively connected to the first airbag and the second airbag, and the suction port is located between the first airbag and the second airbag.

[0015] According to a multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the drug delivery assembly comprises:

[0016] A drug delivery pipe, wherein the drug delivery pipe is located in the inner cavity of the flexible catheter, one end of the drug delivery pipe is fixedly connected to and communicated with the drug delivery port, and the other end of the drug delivery pipe extends out of the flexible catheter;

[0017] A drug administration connector is fixedly connected to one end of the drug administration pipeline away from the drug administration port, and the drug administration connector is communicated with the inner cavity of the drug administration pipeline.

[0018] According to a nasopharyngeal ventilation catheter for a multifunctional ventilator provided by the present invention, the anti-bending support portion includes a support spring, and the support spring is installed on the inner wall of the flexible catheter.

[0019] According to the multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the outer wall of the flexible catheter is provided with scales;

[0020] The monitoring assembly comprises a monitoring channel, a carbon dioxide monitoring port and a carbon dioxide monitoring device connector, wherein the carbon dioxide monitoring port is installed at one end of the monitoring channel, the monitoring channel is located in the inner cavity of the flexible catheter, one end of the monitoring channel extends out of the flexible catheter and is fixedly connected and communicated with the carbon dioxide monitoring device connector;

[0021] The channel component comprises a through hole and an auxiliary hole, both of which are provided on the antibacterial catheter head, and the carbon dioxide monitoring port is arranged close to the through hole.

[0022] According to a nasopharyngeal ventilation catheter for a multifunctional ventilator provided by the present invention, the connecting assembly includes a sub-connector and a female connector, the sub-connector includes a first plug-in tube inserted into the air inlet end of the flexible catheter, the first plug-in tube is connected to a first connector, the inner wall of the first connector is provided with an internal thread, and an air inlet pipe is provided inside the first connector; the female connector includes a second connector and a second plug-in tube, the outer wall of the second connector is provided with an external thread, and blocks are provided on the first plug-in tube and the second plug-in tube.

[0023] According to a multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the sputum suction component comprises a suction channel and a sputum suction device connector; one end of the suction channel is connected to the suction port, and the other end extends out of the flexible catheter;

[0024] The sputum suction device connector is installed at one end of the suction channel away from the suction port, and the sputum suction device connector is communicated with the suction channel, and the sputum suction device connector is used to connect the sputum suction device.

[0025] According to a multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the airbag air supply assembly comprises an inflation channel and an inflation bag, the inflation bag is installed at one end of the inflation channel and is located outside the flexible catheter;

[0026] One end of the two inflation channels away from the inflation bag is communicated with the first air bag and the second air bag respectively.

[0027] According to a multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the inflatable bag comprises an air bag bag and a connecting tube located at the front end of the air bag bag, and the rear end of the air bag bag is connected to the inflatable tube;

[0028] The inner wall of the connecting tube is provided with an upper stop ring and a lower stop ring, a pressing column is installed in the connecting tube, a stop ring is provided in the middle of the pressing column, and a sealing gasket is installed on the stop ring; the stop ring is located between the upper stop ring and the lower stop ring, and a spring is installed between the stop ring and the lower stop ring and is sleeved on the lower part of the pressing column.

[0029] According to a multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the distance between the second airbag and the air outlet end of the flexible catheter is 3.5 cm to 8.5 cm, and the outer diameters of the first airbag and the second airbag are both 10 mm to 30 mm.

[0030] According to a multifunctional nasopharyngeal ventilation catheter for a ventilator provided by the present invention, the outer wall of the second airbag is provided with anti-slip grooves; the flexible catheter, the first airbag and the second airbag are all made of soft plastic or rubber, and the inner surface and outer surface of the flexible catheter are coated with a super-slip coating.

[0031] The present invention discloses the following technical effects:

[0032] The present invention allows medical personnel to directly administer drugs to the patient's nasal cavity or pharynx through a catheter through a drug delivery component, thereby achieving accurate and rapid drug treatment, improving treatment effects and patient comfort; the sputum suction component facilitates effective suction operations when the jet ventilation pharynx stimulates excessive secretions or reflux during surgery, thereby maintaining a patency of the respiratory tract, reducing infection risks, and improving patient safety; the monitoring component monitors the carbon dioxide concentration in the oral and nasal cavity in real time, thereby adjusting the respiratory parameters in real time according to the end-tidal carbon dioxide concentration, thereby improving lung ventilation and gas exchange functions, and ensuring the normal progress of the surgery;

[0033] The present invention can effectively prevent the catheter from being bent or flattened in the patient's body by installing an anti-bending support portion on the inner wall of the flexible catheter, so that the flexible catheter remains round in the radial direction, thereby ensuring smooth ventilation, reducing stimulation to the nasal cavity or pharynx, and improving the wearing comfort of the patient;

[0034] The present invention provides a first airbag and a second airbag. When the first airbag ventilation flexible catheter is placed in the nasal cavity, if the air outlet end of the flexible catheter is curled, a sharp angle will be formed at the tortuous position, thereby causing scratches and damage to the piriform area of ​​the nasal septum, the middle turbinate and the inferior turbinate during the placement process; at this time, the first airbag is inflated to expand the nasal cavity space so that the air outlet end of the catheter can be restored by elastic force, thereby preventing damage to the nasal mucosa; by adjusting the amount of gas in the first airbag, the end of the air outlet can be aligned with the glottis, and the through hole can be prevented from being attached to the pharyngeal wall during ventilation, thereby achieving a better ventilation effect; after the second airbag is inflated, it is located at the turbinate to play a fixing role, thereby effectively preventing the ventilation flexible catheter from falling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of the present invention;

[0037] Figure 2 It is a schematic diagram of the antibacterial catheter head and the flexible catheter in the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of the inflatable bag in the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the neutron joint of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the female connector in the present invention.

[0041] Among them, 1. flexible catheter; 11. protective head; 12. antibacterial catheter head; 13. through hole; 14. monitoring channel; 15. auxiliary hole; 16. suction port; 17. suction channel; 18. carbon dioxide monitoring port; 2. connecting component; 3. first airbag; 4. second airbag; 5. inflation channel; 6. inflation bag; 7. suction device connector; 8. carbon dioxide monitoring device connector; 9. drug delivery pipeline; 101. anti-bending support part ; 1011, support spring; 102, drug delivery connector; 103, drug delivery port; 61, inflation tube; 62, airbag bag; 63, connecting tube; 631, upper gear ring; 632, lower gear ring; 633, pressing column; 634, retaining ring; 21, sub-connector; 211, first plug-in tube; 212, first connector; 213, air inlet pipe; 22, female connector; 221, second connector; 222, second plug-in tube; 223, block. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Reference Figure 1-Figure 5 The present invention provides a nasopharyngeal ventilation catheter for a multifunctional ventilator, comprising:

[0045] A flexible catheter 1, an antibacterial catheter head 12 is installed at the air outlet end of the flexible catheter 1, and a connecting component 2 is installed at the air inlet end; a channel component and a drug delivery port 103 are provided on the antibacterial catheter head 12, and a suction port 16 is provided on the flexible catheter 1;

[0046] The anti-bending support portion 101 is installed on the inner wall of the flexible conduit 1;

[0047] A drug delivery component, one end of which is connected to the drug delivery port 103 and the other end of which extends out of the flexible catheter 1;

[0048] A sputum suction component, one end of which is connected to the suction port 16, and the other end of which extends out of the flexible catheter 1;

[0049] A monitoring component, wherein the detection end of the monitoring component is located in the inner cavity of the flexible catheter 1 and is arranged close to the channel component, and the output end of the monitoring component extends out of the flexible catheter 1. The monitoring component is used to monitor the carbon dioxide concentration in the oral and nasal cavity;

[0050] The airbag mechanism includes a first airbag 3, a second airbag 4 and two sets of airbag air supply components; the first airbag 3 and the second airbag 4 are both fixedly sleeved on the outer wall of the flexible catheter 1, and the first airbag 3 is arranged close to the antibacterial catheter head 12;

[0051] The two groups of airbag air supply components are respectively connected to the first airbag 3 and the second airbag 4, and the suction port 16 is located between the first airbag 3 and the second airbag 4;

[0052] With such a configuration, the present invention allows medical personnel to directly administer drugs to the patient's nasal cavity or pharynx through a catheter through the drug delivery component, thereby achieving accurate and rapid drug treatment, improving treatment effect and patient comfort; the sputum suction component facilitates effective suction operation when the jet ventilation pharynx stimulates excessive secretions or reflux during surgery, thereby maintaining a patency of the respiratory tract, reducing the risk of infection, and improving patient safety; the monitoring component monitors the carbon dioxide concentration in the oral and nasal cavity in real time, thereby adjusting the respiratory parameters in real time according to the end-tidal carbon dioxide concentration, thereby improving lung ventilation and gas exchange functions, and ensuring the normal progress of the surgery;

[0053] The present invention can effectively prevent the catheter from being bent or flattened in the patient's body by installing an anti-bending support portion 101 on the inner wall of the flexible catheter 1, so that the flexible catheter 1 remains circular in the radial direction, thereby ensuring smooth ventilation, reducing stimulation to the nasal cavity or pharynx, and improving the wearing comfort of the patient;

[0054] The present invention provides a first airbag 3 and a second airbag 4. When the first airbag 3 is inserted into the nasal cavity, if the air outlet end of the flexible catheter 1 is curled, a sharp angle will be formed at the tortuous position, thereby causing scratches and damage to the piriform area of ​​the nasal septum, the middle turbinate and the inferior turbinate during the insertion process. At this time, the first airbag 3 is inflated to expand the nasal cavity space, so that the air outlet end of the catheter can be restored by elastic force, thereby preventing damage to the nasal mucosa. By adjusting the amount of gas in the first airbag 3, the end of the air outlet can be aligned with the glottis, and the through hole can be prevented from being attached to the pharyngeal wall during ventilation, thereby achieving a better ventilation effect. After the second airbag 4 is inflated, it is located at the turbinate to play a fixing role, thereby effectively preventing the flexible ventilation catheter 1 from falling out.

[0055] To further optimize the solution, the drug delivery components include:

[0056] A drug delivery pipe 9, the drug delivery pipe 9 is located in the inner cavity of the flexible catheter 1, one end of the drug delivery pipe 9 is fixedly connected to and communicated with the drug delivery port 103, and the other end extends out of the flexible catheter 1;

[0057] A drug delivery connector 102, which is fixed to one end of the drug delivery pipe 9 away from the drug delivery port 103, and the drug delivery connector 102 is connected to the inner cavity of the drug delivery pipe 9;

[0058] With such a configuration, the medical staff first injects the drug into the drug administration pipe 9 through the drug administration connector 102. The drug administration pipe 9 is located in the inner cavity of the flexible catheter 1, one end of which is fixedly connected to and communicated with the drug administration port 103, and the other end extends to the outside of the flexible catheter 1 and is connected to the external drug administration device through the drug administration connector 102; after the drug is injected into the drug administration pipe 9, the drug will flow along the pipe to the drug administration port 103, and finally be released into the patient's nasal cavity or pharynx through the drug administration port 103, thereby achieving accurate and rapid drug treatment.

[0059] In a further optimized solution, the anti-bending support portion 101 includes a support spring 1011, and the support spring 1011 is installed on the inner wall of the flexible conduit 1;

[0060] In this configuration, the support spring 1011 is installed on the inner wall of the flexible catheter 1 to provide basic elastic support; when the flexible catheter 1 is subjected to external force in the patient's body, the support spring 1011 resists extrusion and deformation to maintain the stability and patency of the catheter.

[0061] Further optimization scheme, the outer wall of the flexible catheter 1 is provided with a scale, and the insertion depth can be seen during the insertion process, which is convenient for operation; the ID of the flexible catheter 1 is 2.5mm-6.5mm, which is convenient for insertion; the flexible catheter 1 forms a certain curvature during injection molding, which conforms to the physiological characteristics of the human body and is convenient for insertion into the nasal cavity;

[0062] The monitoring assembly includes a monitoring channel 14, a carbon dioxide monitoring port 18 and a carbon dioxide monitoring device connector 8. The carbon dioxide monitoring port 18 is installed at one end of the monitoring channel 14. The monitoring channel 14 is located in the inner cavity of the flexible catheter 1. One end of the monitoring channel 14 extends out of the flexible catheter 1 and is fixedly connected and communicated with the carbon dioxide monitoring device connector 8.

[0063] The channel assembly includes a through hole 13 and an auxiliary hole 15, both of which are provided on the antibacterial catheter head 12, and a carbon dioxide monitoring port 18 is provided near the through hole 13;

[0064] A plurality of auxiliary holes 15 are provided, and the auxiliary holes 15 are arranged along the axial direction of the antibacterial catheter head 12; when the flexible catheter 1 enters the intricate and narrow area in the nasal cavity, the antibacterial catheter head 12 assembled at its front end exhibits excellent adaptability and flexibility, and when the catheter head 12 is moderately squeezed from the nasal wall, the auxiliary holes 15 can be bent and flattened at these preset hole positions, so that the catheter can easily pass through the narrow area, greatly improving the convenience of operation and reducing the difficulty of operation; at the same time, the auxiliary holes 15 serve as a backup ventilation channel, and when the through hole 13 is blocked by the pharyngeal wall mucosa, they quickly assume the task of maintaining smooth breathing, ensuring that the patient can obtain a stable and sufficient oxygen supply even in extreme cases, thereby enhancing ventilation efficiency and safety.

[0065] According to a further optimization scheme, the antibacterial catheter head 12 is arc-shaped, and the arc-shaped antibacterial catheter head 12 is in contact with the nasal cavity as the front end, and will not scratch the nasal mucosa.

[0066] Further optimizing the scheme, the sputum suction assembly includes a suction channel 17 and a sputum suction device connector 7; one end of the suction channel 17 is connected to the suction port 16, and the other end extends out of the flexible catheter 1;

[0067] The suction device connector 7 is installed at one end of the suction channel 17 away from the suction port 16, and the suction device connector 7 is connected to the suction channel 17. The suction device connector 7 is used to connect the suction device to facilitate suctioning of the patient during the operation.

[0068] According to a further optimized solution, the airbag air supply assembly includes an inflation channel 5 and an inflation bag 6, wherein the inflation bag 6 is installed at one end of the inflation channel 5 and is located outside the flexible conduit 1;

[0069] One end of the two inflation channels 5 away from the inflation bag 6 is communicated with the first air bag 3 and the second air bag 4 respectively.

[0070] Further optimized solution, the inflatable bag 6 includes an airbag bag 62 and a connecting tube 63 located at the front end of the airbag bag 62, and the rear end of the airbag bag 62 is connected to an inflation tube 61; the first airbag 3 and the second airbag 4 can be inflated and deflated at the same time, or they can be inflated and deflated independently. When inflated and deflated at the same time, it is sufficient to set an inflation channel 5 and an inflatable bag 6; when inflated and deflated independently, two inflation channels 5 respectively connected to the first airbag 3 and the second airbag 4 can be set, and each end of the inflation channel 5 is connected to an inflatable bag 6; it is also possible to set a channel, but two inflation tubes 61 are installed in the channel, one inflation tube 61 is inserted into the first airbag 3, and the other inflation tube 61 is inserted into the second airbag 4, and the other ends of the two inflation tubes 61 are respectively connected to an inflatable bag 6;

[0071] An upper stop ring 631 and a lower stop ring 632 are provided on the inner wall of the connecting tube 63, a pressing column 633 is installed in the connecting tube 63, a retaining ring 634 is provided in the middle of the pressing column 633, and a sealing gasket is installed on the retaining ring 634; the retaining ring 634 is located between the upper stop ring 631 and the lower stop ring 632, and a spring sleeved on the lower part of the pressing column 633 is installed between the retaining ring 634 and the lower stop ring 632; therefore, the sealing gasket on the pressing column 633 rests on the upper stop ring 631 under the elastic force of the spring, forming a self-sealing structure, thereby realizing the sealing of the connecting tube 63 and the airbag part; when it is necessary to inflate the first airbag 3 and the second airbag 4, the pressing column 633 is pressed downward with the front end of the needle tube, the sealing gasket moves downward for ventilation, and is released after inflation to form a natural seal, and the airbag will not leak.

[0072] Further optimized solution, the distance between the second airbag 4 and the air outlet end of the flexible catheter 1 is 3.5cm to 8.5cm, the outer diameters of the first airbag 3 and the second airbag 4 are both 10mm to 30mm; the size of the second airbag 4 is larger than that of the first airbag 3, and different airbag sizes can be suitable for patients of different ages, heights and weights;

[0073] Further optimization scheme, the outer wall of the second airbag 4 is provided with anti-skid patterns to increase the anti-skid effect; the flexible catheter 1, the first airbag 3 and the second airbag 4 are all made of soft plastic or rubber, and the inner and outer surfaces of the flexible catheter 1 are coated with super-slip coatings;

[0074] The flexible catheter 1, the first balloon 3 and the second balloon 4 are made of soft plastics such as polyurethane, polyphosphate, polybutylene succinate, polylactic acid, carboxymethyl cellulose, polyvinyl chloride, polyethylene, polypropylene carbonate, styrene-butadiene-styrene copolymer or rubber such as silicone;

[0075] The super-slip coating is selected from one of medical grade polyvinyl pyrrolidone, polyoxyethylene hydrophilic polymer, glycerol and polyethylene glycol.

[0076] A further optimization solution is that the connecting component 2 is a parent-child screw joint made of hard plastic. During the use of the flexible catheter 1, the connecting component 2 sometimes contacts and rubs the nose wing, causing pain or discomfort to the patient. The air inlet end of the flexible catheter 1 extends backward to form a protective head 11 that partially wraps the connecting component 2. The protective head 11 is integrally formed with the flexible catheter 1 and is therefore also soft, which can prevent the connecting component 2 from abrading the patient's nose wing.

[0077] Further optimized solution, the connection assembly 2 includes a sub-connector 21 and a female connector 22, the sub-connector 21 includes a first plug-in tube 211 inserted into the air inlet end of the flexible conduit 1, the first plug-in tube 211 is connected to the first connector 212, the inner wall of the first connector 212 is provided with an internal thread, and the first connector 212 is provided with an air inlet pipe 213; the female connector 22 includes a second connector 221 and a second plug-in tube 222, the outer wall of the second connector 221 is provided with an external thread, and the first plug-in tube 211 and the second plug-in tube 222 are both provided with a stopper 223;

[0078] The connection and sealing of the two can be achieved by inserting the female connector into the sub-connector and tightening the threads, which is easy to operate; blocks 223 are provided on the first plug-in tube 211 and the second plug-in tube 222 to facilitate controlling the plug-in depth of the plug-in tube and the hose; the sub-connector and the female connector are connected by threads, and two blocks can also be provided on the outer wall of the front end part of the second connector 221 of the female connector instead of external threads, and a groove for accommodating the above-mentioned blocks can be provided on the inner wall of the first connector 212, the female connector is inserted into the sub-connector, and then the block is screwed into the groove to achieve quick connection.

[0079] Example 2

[0080] The difference between this embodiment and embodiment 1 is that the connection component 2 adopts a standard endotracheal tube connector, so that it can be adapted to a conventional ventilator; or the connection component 2 in embodiment 1 can be adapted to a high-frequency ventilator. The wide adaptability of the present invention enables higher flexibility and practicality in medical practice, thereby improving the utilization efficiency of medical resources.

[0081] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0082] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technical users in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A nasopharyngeal ventilation catheter for a multifunctional ventilator, characterized in that: include: A flexible catheter (1), wherein an antibacterial catheter head (12) is installed at the air outlet end of the flexible catheter (1), and a connecting component (2) is installed at the air inlet end; a channel component and a drug delivery port (103) are provided on the antibacterial catheter head (12), and a suction port (16) is provided on the flexible catheter (1); An anti-bending support portion (101), the anti-bending support portion (101) being mounted on the inner wall of the flexible conduit (1); A drug delivery component, one end of which is connected to the drug delivery port (103) and the other end of which extends out of the flexible catheter (1); A sputum suction component, one end of which is connected to the suction port (16) and the other end of which extends out of the flexible catheter (1); A monitoring component, wherein the detection end of the monitoring component is located in the inner cavity of the flexible conduit (1) and is arranged close to the channel component, and the output end of the monitoring component extends out of the flexible conduit (1), and the monitoring component is used to monitor the carbon dioxide concentration at the channel component; An airbag mechanism, the airbag mechanism comprising a first airbag (3), a second airbag (4) and two groups of airbag air supply components; the first airbag (3) and the second airbag (4) are both fixedly sleeved on the outer wall of the flexible catheter (1), and the first airbag (3) is arranged close to the antibacterial catheter head (12); The two groups of airbag air supply components are respectively connected to the first airbag (3) and the second airbag (4), and the suction port (16) is located between the first airbag (3) and the second airbag (4).

2. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The drug delivery assembly comprises: a drug delivery pipe (9), wherein the drug delivery pipe (9) is located in the inner cavity of the flexible catheter (1), one end of the drug delivery pipe (9) is fixedly connected to and communicated with the drug delivery port (103), and the other end of the drug delivery pipe (9) extends out of the flexible catheter (1); A drug administration connector (102), wherein the drug administration connector (102) is fixedly connected to an end of the drug administration pipe (9) away from the drug administration port (103), and the drug administration connector (102) is connected to the inner cavity of the drug administration pipe (9).

3. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The anti-bending support portion (101) comprises a support spring (1011), and the support spring (1011) is installed on the inner wall of the flexible conduit (1).

4. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The outer wall of the flexible conduit (1) is provided with scales; The monitoring assembly comprises a monitoring channel (14), a carbon dioxide monitoring port (18) and a carbon dioxide monitoring device connector (8), wherein the carbon dioxide monitoring port (18) is installed at one end of the monitoring channel (14), the monitoring channel (14) is located in the inner cavity of the flexible conduit (1), and one end of the monitoring channel (14) extends out of the flexible conduit (1) and is fixedly connected to and communicated with the carbon dioxide monitoring device connector (8); The channel assembly comprises a through hole (13) and an auxiliary hole (15), wherein the through hole (13) and the auxiliary hole (15) are both provided on the antibacterial catheter head (12), and the carbon dioxide monitoring port (18) is arranged close to the through hole (13).

5. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The connection assembly (2) comprises a sub-connector (21) and a female connector (22); the sub-connector (21) comprises a first plug-in tube (211) inserted into the air inlet end of the flexible conduit (1); the first plug-in tube (211) is connected to a first connector (212); the inner wall of the first connector (212) is provided with an internal thread; an air inlet pipe (213) is provided inside the first connector (212); the female connector (22) comprises a second connector (221) and a second plug-in tube (222); the outer wall of the second connector (221) is provided with an external thread; and both the first plug-in tube (211) and the second plug-in tube (222) are provided with a stopper (223).

6. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The sputum suction component comprises a suction channel (17) and a sputum suction device connector (7); one end of the suction channel (17) is connected to the suction port (16), and the other end extends out of the flexible catheter (1); The sputum suction device connector (7) is installed at one end of the suction channel (17) away from the suction port (16), and the sputum suction device connector (7) is connected to the suction channel (17), and the sputum suction device connector (7) is used to connect the sputum suction device.

7. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The airbag air supply assembly comprises an inflation channel (5) and an inflation bag (6), wherein the inflation bag (6) is installed at one end of the inflation channel (5) and is located outside the flexible conduit (1); One end of the two inflation channels (5) away from the inflation bag (6) is respectively connected to the first air bag (3) and the second air bag (4).

8. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 7, characterized in that: The inflatable bag (6) comprises an air bag bag (62) and a connecting pipe (63) located at the front end of the air bag bag (62), and the rear end of the air bag bag (62) is connected to an inflation pipe (61); An upper stop ring (631) and a lower stop ring (632) are provided on the inner wall of the connecting tube (63); a pressing column (633) is installed in the connecting tube (63); a stop ring (634) is provided in the middle of the pressing column (633); a sealing gasket is installed on the stop ring (634); the stop ring (634) is located between the upper stop ring (631) and the lower stop ring (632); a spring sleeved on the lower part of the pressing column (633) is installed between the stop ring (634) and the lower stop ring (632).

9. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The distance between the second airbag (4) and the air outlet end of the flexible catheter (1) is 3.5 cm to 8.5 cm, and the outer diameters of the first airbag (3) and the second airbag (4) are both 10 mm to 30 mm.

10. The multifunctional nasopharyngeal ventilation catheter for a ventilator according to claim 1, characterized in that: The outer wall of the second airbag (4) is provided with anti-slip grooves; the flexible catheter (1), the first airbag (3) and the second airbag (4) are all made of soft plastic or rubber, and the inner surface and the outer surface of the flexible catheter (1) are coated with a super-slip coating.

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