Adjustable pharyngeal breather pipe

Abstract

The invention relates to the technical field of medical breather pipes, in particular to an adjustable pharyngeal breather pipe which comprises a seaming opening, and a through hole is formed in the seaming opening. The gas conduit comprises a main exhaust passage and an oxygen supply interlayer, a sampling gas passage is arranged in the main exhaust passage, and oxygen flows out from an area between the oxygen supply interlayer and the main exhaust passage; the adjusting assembly comprises an impeller; the cleaning mechanism comprises a clamping plug and is used for automatically adjusting the distance between the sampling gas channel and the oxygen outlet according to the oxygen outlet flow, the larger the oxygen flow is, the larger the distance between the sampling gas channel and the oxygen outlet is, and it is avoided that too much oxygen is inhaled to affect the detection result; meanwhile, mucus and water vapor are unblocked through reciprocating movement of the clamping plug, the sampling air channel is guided through the rolling ring, meanwhile, the water vapor of exhaled air is adsorbed, and the mucus and the water vapor are prevented from blocking the air guide pipe.

Description

Technical Field

[0001] The invention relates to the technical field of medical ventilation tubes, in particular to an adjustable pharyngeal ventilation tube. Background Art

[0002] Oropharyngeal airways and nasopharyngeal airways are both important tools for maintaining a patent airway and are widely used in the fields of emergency and intensive care as well as painless gastroenteroscopy. They assist in oxygenating patients who are unconscious or have difficulty breathing, expel part of the exhaled gas, and sample the exhaled gas to detect the end-tidal carbon dioxide concentration, making it easier to understand various indicators. However, the special-shaped tracheal tubes in the prior art have problems such as inaccurate positioning, unstable connection, and difficulty in installation when used.

[0003] The existing Chinese patent with publication number CN118807057A discloses a special-shaped tracheal catheter, which includes a tracheal assembly, including a tooth pad, an oxygen supply layer arranged on the inner wall of the tooth pad, an air bag sleeved on the outer wall of the oxygen supply layer, and a catheter movably arranged on the inner wall of the tooth pad; and a fixing assembly, including a connector, a swivel sleeved on the outer wall of the connector, and a push pin movably arranged on the inner wall of the connector; the catheter is fixed inside the patient's airway through the cooperation of the oxygen supply layer and the air bag, and through the oxygen side hole on the surface of the air bag, oxygen can be delivered evenly and stably, and the situation that the air bag is over-expanded and squeezes the patient's airway can be avoided. When the connector is connected to an external device, the movement of the push pin can be controlled by the external swivel, so that the elastic plate at the bottom of the push pin is deformed, so that the elastic plate is close to the inner wall of the device interface, further fixing the connection between the two and improving the air tightness, and preventing leakage at the surface interface connection.

[0004] However, in the above technical solution, when the oxygen flow rate increases, the sampling airway for sampling the exhaled gas is too close to the oxygen outlet, resulting in a large amount of oxygen entering the sampling airway, affecting the detection accuracy of end-tidal carbon dioxide. At the same time, if the sampling airway is set in the direction of the trachea end, although it is far away from the oxygen outlet, it may cause mucus to be sucked into the negative pressure and cause blockage. Therefore, it is necessary to use different distances between the sampling end and the oxygen outlet end at different oxygen flow rates. In addition, mucus is easily accumulated at the end of the trachea, which is sucked into the sampling airway and causes blockage. It needs to be pulled out and cleaned when clearing the blockage, which is cumbersome and time-consuming. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above problems in the prior art, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an adjustable pharyngeal ventilating tube, comprising a mouthpiece, wherein the mouthpiece has a through hole; A gas conduit, the gas conduit is movably engaged in the through hole, the gas conduit comprises a main exhaust channel and an oxygen supply interlayer, a sampling air channel is arranged in the main exhaust channel, and oxygen flows out from the area between the oxygen supply interlayer and the main exhaust channel; An adjustment assembly, comprising an impeller rotatably sleeved between the oxygen supply interlayer and the main exhaust duct, wherein the impeller controls the sampling air duct to move away from the oxygen supply interlayer when the oxygen intake flow rate increases; The cleaning mechanism comprises a plug arranged on the end face of the sampling airway, and the plug clears the mucus on the inner wall of the main exhaust passage when the sampling airway moves.

[0008] As a preferred embodiment of the adjustable pharyngeal ventilator described in the present invention, the end faces of the gas duct are respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the oxygen supply interlayer, the main exhaust duct is connected with the air outlet pipe, the sampling airway is slidably arranged in the air outlet pipe, and an oxygen outlet is arrayed at one end of the oxygen supply interlayer close to the main exhaust duct.

[0009] As a preferred embodiment of the adjustable pharyngeal ventilator described in the present invention, a first cylinder is fixedly provided in the main exhaust duct, a second cylinder is slidably provided in the first cylinder, a third cylinder is slidably provided in the second cylinder, and the sampling airway passes through the third cylinder and moves synchronously therewith.

[0010] As a preferred embodiment of the adjustable pharyngeal ventilator of the present invention, a first water bag and a second water bag are respectively provided inside the main exhaust passage, a first flow channel is opened on the first cylinder, and a second flow channel is opened on the second cylinder.

[0011] As a preferred solution of the adjustable pharyngeal ventilator described in the present invention, a rotating ring is provided on the outer coaxial sleeve of the impeller, ratchets are provided on the inner wall of the rotating ring, and a rotating shaft is provided on the outer wall of the rotating ring. When the rotation speed of the impeller exceeds a set threshold, the rotating ring and the rotating shaft start to rotate.

[0012] As a preferred solution of the adjustable pharyngeal ventilator of the present invention, one end of the impeller is rotatably arranged on the outer wall of the sampling airway, and the other end is fixedly provided with a connecting ring, the end surface of the connecting ring is provided with a groove, and a ratchet is rotatably arranged in the groove; A first elastic member is provided on the outer wall of the pawl and the inner wall of the groove. In an initial state, the first elastic member pulls the pawl back into the groove. After the rotation speed of the connecting ring exceeds a set rotation speed threshold, the pawl swings outward and engages with the ratchet.

[0013] As a preferred solution of the adjustable pharyngeal ventilator of the present invention, a pulley is provided at one end of the rotating shaft, a connecting cavity is provided between the first water bag and the second water bag, a rack is provided in the connecting cavity for sliding, and a transmission tooth is provided on the upper end surface of the rack for meshing; An annular groove is arranged on one end face of the transmission tooth, a synchronous belt is sleeved on the annular groove and the outer wall of the pulley, and a sealing plate is slidably arranged on one end of the rack away from the pulley.

[0014] As a preferred solution of the adjustable pharyngeal ventilator of the present invention, sliding columns are slidably provided at both ends of the rack, a single tooth is provided at the other end of the sliding column, and a second elastic member is provided between the single tooth and the rack.

[0015] As a preferred solution of the adjustable pharyngeal ventilator of the present invention, wherein: the sampling airway is provided with a rolling ring near the outlet of the main exhaust duct, and the rolling ring is driven to roll synchronously when the sampling airway moves; The outer wall of the plug is provided with a corrugated scraper, the end surface of the plug is also provided with a blocking net, and the plug is rotatably arranged on the inner wall of the main exhaust duct.

[0016] As a preferred solution of the adjustable pharyngeal airway of the present invention, the inner wall of the plug is also provided with a spiral groove, the outer wall of the sampling airway is rotatably provided with a ball, and the ball is rolled on the inner wall of the spiral groove.

[0017] The beneficial effects of the present invention include automatically adjusting the distance between the sampling airway and the oxygen outlet according to the oxygen outlet flow rate, the greater the oxygen flow rate, the greater the distance between the two, to avoid excessive oxygen inhalation and affecting the detection result when the negative pressure in the sampling airway absorbs end-tidal carbon dioxide when the oxygen flow rate is large and the distance to the oxygen outlet is close. The sealing plate is directly moved by the impeller speed control, and the telescopic position of the sampling airway is controlled by the change of the input gas flow rate. At the same time, the reciprocating movement of the plug is used to clear mucus and water vapor, the sampling airway is guided by the rolling ring, and the water vapor of the exhaled gas is adsorbed to prevent mucus and water vapor from clogging the gas duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work. Among them: Figure 1 It is an overall schematic diagram of the adjustable pharyngeal ventilator in the present invention.

[0019] Figure 2 This is a diagram showing the internal structure of the gas conduit in the present invention.

[0020] Figure 3 It is a schematic diagram of the adjustment assembly structure in the present invention.

[0021] Figure 4 for Figure 3 Schematic diagram of the A area structure.

[0022] Figure 5 It is a schematic diagram of the internal structure of the connecting cavity in the present invention.

[0023] Figure 6 for Figure 5 Schematic diagram of the B region structure.

[0024] Figure 7 It is a schematic diagram of the connection between the first water bag and the second water bag in the present invention.

[0025] Figure 8 for Figure 7 Schematic diagram of the C region structure.

[0026] Fig. 9 It is a schematic diagram of the rolling circle area structure in the present invention.

[0027] Reference numerals: 100, bite; 1001, air inlet pipe; 1002, air outlet pipe; 1003, oxygen outlet; 1004, first cylinder; 1005, second cylinder; 1006, third cylinder; 1007, first water bag; 1008, second water bag; 1009, first flow channel; 101, through hole; 1011, second flow channel; 200, gas conduit; 201, main exhaust duct; 202, oxygen supply interlayer; 203, sampling air duct; 2001, rolling ring; 2002, corrugated scraper; 2003, barrier net; 2004, spiral groove; 2005, sphere; 300, impeller; 3001, rotating ring; 3002, ratchet; 3003, rotating shaft; 3004, connecting ring; 3005, groove; 3006, ratchet; 3007, first elastic member; 3008, pulley; 3009, connecting cavity; 3011, rack; 3012, transmission tooth; 3013, annular groove; 3014, synchronous belt; 3015, sealing plate; 3016, sliding column; 3017, single tooth; 3018, second elastic member; 400. Jam. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1 Reference Figure 1 to Figure 8 , which is the first embodiment of the present invention, provides an adjustable pharyngeal ventilator, including a mouthpiece 100, a gas conduit 200, an adjustment assembly and a cleaning mechanism, which automatically adjusts the distance between the sampling airway 203 and the oxygen outlet 1003 according to the oxygen outlet flow rate. The greater the oxygen flow rate, the greater the distance between the two, to avoid excessive oxygen inhalation and affecting the detection result when the negative pressure in the sampling airway 203 absorbs end-tidal carbon dioxide when the oxygen flow rate is large and the distance to the oxygen outlet 1003 is close.

[0032] Specifically, it includes: a bite 100, and a through hole 101 is opened on the bite 100; The gas conduit 200 is movably engaged in the through hole 101. The gas conduit 200 includes a main exhaust channel 201 and an oxygen supply interlayer 202. A sampling air channel 203 is provided in the main exhaust channel 201. Oxygen flows out from the area between the oxygen supply interlayer 202 and the main exhaust channel 201. The adjustment assembly includes an impeller 300 that is rotatably sleeved between the oxygen supply interlayer 202 and the main exhaust channel 201, and the impeller 300 controls the sampling air channel 203 to move away from the oxygen supply interlayer 202 when the oxygen intake flow rate increases; The cleaning mechanism includes a plug 400 disposed on the end surface of the sampling airway 203 . The plug 400 clears the mucus on the inner wall of the main exhaust passage 201 when the sampling airway 203 moves.

[0033] Among them, the through holes 101 are symmetrically arranged on both sides of the bite 100, and the gas duct 200 is clamped on the through hole 101 by an elastic buckle to prevent shaking during use. The through hole 101 in the center of the bite 100 is used for the endoscope lens to pass through.

[0034] More preferably, the end faces of the gas duct 200 are respectively connected with an inlet pipe 1001 and an outlet pipe 1002, the inlet pipe 1001 is connected with the oxygen supply interlayer 202, the main exhaust duct 201 is connected with the outlet pipe 1002, the sampling air duct 203 is slidably arranged in the outlet pipe 1002, and an oxygen outlet 1003 is arrayed at one end of the oxygen supply interlayer 202 close to the main exhaust duct 201.

[0035] Among them, a first cylinder 1004 is fixedly provided in the main exhaust duct 201, a second cylinder 1005 is slidably provided in the first cylinder 1004, a third cylinder 1006 is slidably provided in the second cylinder 1005, and the sampling air duct 203 passes through the third cylinder 1006 and moves synchronously therewith.

[0036] Preferably, a first water bag 1007 and a second water bag 1008 are respectively provided inside the main exhaust passage 201 , a first flow channel 1009 is opened on the first cylinder 1004 , and a second flow channel 1011 is opened on the second cylinder 1005 .

[0037] Among them, the first flow channel 1009 is connected with the first water bag 1007 through an oil pipe, and the second flow channel 1011 is connected with the second water bag 1008 through an oil pipe. In this embodiment, the first water bag 1007 and the second water bag 1008 are connected by a piston cylinder, and the piston sliding seal is arranged in the piston cylinder. When the piston slides along the piston cylinder toward the first water bag 1007, the liquid in the piston cylinder is driven to flow into the first water bag 1007 to increase its pressure. At the same time, the liquid in the second water bag 1008 is supplemented into the piston cylinder, resulting in a decrease in the pressure of the second water bag 1008.

[0038] Among them, the first cylinder 1004 is located near one end of the outlet of the main exhaust duct 201 and is made of soft plastic to avoid causing damage to the body. The first cylinder 1004 has the largest volume, and the second cylinder 1005 is slidably arranged inside the first cylinder 1004. The outer wall of the first cylinder 1004 is provided with holes and grooves so that excess exhaled gas can pass through and be discharged through the main exhaust duct 201.

[0039] More preferably, in this embodiment, the movement of the piston is driven by a cylinder, and the movement stroke of the cylinder is controlled by the rotation speed of the impeller 300. When the oxygen intake increases, the rotation speed of the impeller 300 increases, and the rotation speed sensor monitors the signal and controls the piston to move toward the first water bag 1007 to adjust the position.

[0040] In summary, when in use, due to the different physical conditions of different patients, when used by adult male patients, the oxygen demand is relatively large, so a higher oxygen intake volume will be set, and at the same time, the speed of the impeller 300 will be increased, and the piston will move toward the first water bag 1007, driving the liquid to flow into the first water bag 1007, and the liquid with increased pressure enters the first cylinder 1004 from the first flow channel 1009, and pushes the second cylinder 1005 to continue to slide outward. At the same time, the liquid also synchronously enters the second cylinder 1005 and pushes the third cylinder 1006 to move, driving the sampling airway 203 to move outward, and the sampling airway 203 slides toward the end position of the main exhaust channel 201, increasing the distance between the sampling airway 203 and the oxygen outlet 1003, and automatically adjusting the distance between the sampling airway 203 and the oxygen outlet 1003 according to the oxygen outlet flow rate. The larger the oxygen flow rate, the larger the distance between the two, to avoid the negative pressure in the sampling airway 203 sucking end-tidal carbon dioxide when the oxygen flow rate is large and the distance to the oxygen outlet 1003 is close, and excessive oxygen is inhaled to affect the detection result.

[0041] At the same time, when used for patients with lower oxygen demand, the speed of the impeller 300 decreases, and the liquid flows to the second water bag 1008, so that the liquid enters the cavity surrounded by the second cylinder 1005 and the third cylinder 1006 from the second flow channel 1011 and squeezes and drives the third cylinder 1006 to move back, and further enters the cavity between the second cylinder 1005 and the first cylinder 1004, so that the second cylinder 1005 retracts as a whole, and finally the sampling airway 203 is retracted. When the oxygen output is small, the sampling of end-tidal carbon dioxide is not affected, and at the same time, the retraction distance into the main exhaust duct 201 is increased, so as to prevent impurities such as mucus from being sucked into the sampling airway 203 by negative pressure and causing blockage.

[0042] Example 2 Reference Figure 1 to Figure 8 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that a sealing plate 3015 is used instead of the piston. The sealing plate 3015 is directly moved by the rotation speed of the impeller 300, and the telescopic position of the sampling airway 203 is controlled by the change of the input gas flow rate. At the same time, the reciprocating movement of the plug 400 is used to clear the mucus and water vapor.

[0043] Specifically, a rotating ring 3001 is coaxially sleeved outside the impeller 300, a ratchet 3002 is provided on the inner wall of the rotating ring 3001, and a rotating shaft 3003 is provided on the outer wall of the rotating ring 3001. When the speed of the impeller 300 exceeds a set threshold, the rotating ring 3001 and the rotating shaft 3003 start to rotate.

[0044] Among them, in this embodiment, a circular array of toothed blocks is provided on the outer wall of the rotating ring 3001, and a curved groove is provided on the outer wall of the rotating shaft 3003. The toothed blocks are slidably arranged inside the curved groove, and after the previous toothed block is separated from the curved groove, the next toothed block just slides into the curved groove, so that only one toothed block is in contact with the curved groove at the same time, and each toothed block drives the curved groove to rotate respectively when following the rotation of the rotating ring 3001.

[0045] One end of the impeller 300 is rotatably arranged on the outer wall of the sampling air channel 203 , and the other end is fixedly provided with a connecting ring 3004 . A groove 3005 is formed on the end surface of the connecting ring 3004 , and a ratchet 3006 is rotatably arranged in the groove 3005 .

[0046] Preferably, a first elastic member 3007 is provided on the outer wall of the pawl 3006 and the inner wall of the groove 3005 . In the initial state, the first elastic member 3007 pulls the pawl 3006 back into the groove 3005 . After the rotation speed of the connecting ring 3004 exceeds the set rotation speed threshold, the pawl 3006 swings outward and engages with the ratchet 3002 .

[0047] Furthermore, the first elastic member 3007 is a spring, and the elastic coefficient of the spring is selected according to the set speed threshold. The larger the elastic coefficient, the greater the centrifugal force required to overcome the elastic force of the first elastic member 3007, and the higher the set speed threshold.

[0048] A pulley 3008 is provided at one end of the rotating shaft 3003, a connecting cavity 3009 is provided between the first water bag 1007 and the second water bag 1008, a rack 3011 is slidably provided in the connecting cavity 3009, and a transmission tooth 3012 is meshed on the upper end surface of the rack 3011.

[0049] More preferably, an annular groove 3013 is provided on one end face of the transmission tooth 3012 , a synchronous belt 3014 is sleeved between the annular groove 3013 and the outer wall of the pulley 3008 , and a sealing plate 3015 is slidably provided on one end of the rack 3011 away from the pulley 3008 .

[0050] Among them, one end of the synchronous belt 3014 slides through the inner wall of the connecting cavity 3009 and is sleeved with the pulley 3008, thereby transmitting power to the transmission tooth 3012 while preventing the liquid in the connecting cavity 3009 from leaking out. The transmission tooth 3012 is rotatably arranged in the central position of the connecting cavity 3009.

[0051] Furthermore, the sealing plate 3015 is slidably engaged with the inner wall of the connecting cavity 3009 and divides the connecting cavity 3009 into two chambers.

[0052] More preferably, sliding posts 3016 are slidably provided at both ends of the rack 3011 , a single tooth 3017 is provided at the other end of the sliding post 3016 , and a second elastic member 3018 is provided between the single tooth 3017 and the rack 3011 .

[0053] Among them, the single tooth 3017 is a rack with one tooth, and the second elastic member 3018 is a spring. In the initial state, the spring pushes the single tooth 3017 away from the rack 3011 , and one end face of the single tooth 3017 is also fixedly connected to the sealing plate 3015 .

[0054] More preferably, the first water bag 1007 , the connecting cavity 3009 and the second water bag 1008 are all filled with liquid. As the sealing plate 3015 slides left and right, the liquid in the connecting cavity 3009 is driven to flow in two directions, thereby realizing the expansion and contraction of the sampling airway 203 .

[0055] Similarly, third elastic members are provided on both sides of the rack 3011 and both sides of the inner wall of the connecting cavity 3009. The third elastic members on both sides simultaneously make the rack 3011 located in the center of the connecting cavity 3009 in the initial state and always have a tendency to automatically reset.

[0056] In summary, during use, as the amount of oxygen intake increases, the rotation speed of the impeller 300 increases to a set threshold value. At this time, the centrifugal force of the pawl 3006 overcomes the pulling force of the first elastic member 3007, rotates outward and engages with the ratchet 3002, and finally drives the swivel 3001 and the shaft 3003 to rotate. Subsequently, the pulley 3008 drives the transmission tooth 3012 to rotate through the synchronous belt 3014, and finally drives the rack 3011 to move toward the first water bag 1007. At the same time, the pressure of the first water bag 1007 increases due to the influx of liquid into the connecting chamber 3009, and the pressure of the second water bag 1008 decreases as the liquid flows into the connecting chamber 3009, thereby realizing the adjustment of the telescopic position of the sampling airway 203.

[0057] At the same time, when the gas introduced into the air inlet pipe 1001 is changed to the stroboscopic mode, the gas flow is distributed in a sinusoidal wave, and the sampling airway 203 is continuously expanded and contracted following the gas flow, and automatically resets under the action of the third elastic member, and so on. The sampling airway 203 reciprocates and contracts, driving the plug 400 to slide up and down in the main exhaust duct 201, and at the same time, the mucus blocking the outlet of the main exhaust duct 201 is poked out, so as to prevent the mucus blockage from affecting the exhalation of gas and the collection of end-tidal carbon dioxide.

[0058] Example 3 Reference Figure 1-Figure 9 , which is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that the sampling airway 203 is guided by a rolling ring 2001, and the water vapor of the exhaled gas is adsorbed at the same time to prevent mucus and water vapor from blocking the gas duct 200.

[0059] Specifically, a rolling ring 2001 is provided at a position of the sampling air channel 203 close to the outlet of the main exhaust channel 201 , and the rolling ring 2001 is driven to roll synchronously when the sampling air channel 203 moves.

[0060] More preferably, the outer wall of the plug 400 is provided with a corrugated scraper 2002 , the end face of the plug 400 is also provided with a blocking net 2003 , and the plug 400 is rotatably arranged on the inner wall of the main exhaust duct 201 .

[0061] Among them, the rolling ring 2001 is in a circular shape and is made of a water-absorbing sponge material to absorb moisture in the exhaled gas. An airway is provided on the plug 400, so that the exhaled gas can enter the main exhaust duct 201 from the airway through the plug 400, while blocking impurities such as mucus.

[0062] Furthermore, the blocking net 2003 and the corrugated scraper 2002 are made of sponge material, which absorbs water vapor in the exhaled gas and scrapes and removes the adhered mucus objects to prevent blockage.

[0063] The inner wall of the plug 400 is also provided with a spiral groove 2004 , and the outer wall of the sampling airway 203 is rotatably provided with a ball 2005 , and the ball 2005 is rolled on the inner wall of the spiral groove 2004 .

[0064] Illustratively, in other embodiments, the main exhaust duct 201 is made of soft rubber material, and when the rolling ring 2001 expands, it squeezes the main exhaust duct 201 to expand outward, and makes the main exhaust duct 201 at this location fit tightly with the oxygen outlet 1003 on the oxygen supply interlayer 202, and oxygen can only flow out from the oxygen outlet 1003 above the rolling ring 2001. When the sampling air duct 203 moves downward, the rolling ring 2001 rolls a distance of 1 / π at the same linear speed, thereby increasing the number of oxygen outlets 1003 that can exhaust air, preventing the oxygen injection speed from being too high and mixing into the sampling air duct 203. When the air flow is small, part of the oxygen outlet 1003 is closed to prevent mucus from entering.

[0065] Illustratively, in other embodiments, when the sampling air channel 203 moves to the lowermost end, the rolling ring 2001 rolls to the plug 400 , so that the rolling ring 2001 fits the plug 400 and is compressed, and the water vapor adsorbed therein is compressed and discharged, ensuring the good water absorption of the rolling ring 2001 .

[0066] In summary, when in use, the sampling airway 203 drives the rolling ring 2001 to roll along the inner wall of the main exhaust duct 201 during the reciprocating expansion and contraction process, thereby playing a guiding role, preventing the sampling airway 203 from bending or the entrance from sticking to the inner wall of the main exhaust duct 201. The rolling ring 2001 can also adsorb water vapor in the exhaled gas.

[0067] At the same time, when the sampling airway 203 slides downward, the spiral groove 2004 is driven to rotate through the sphere 2005, so that the spiral-shaped corrugated scraper 2002 on the outer wall of the plug 400 rotates to remove mucus and water vapor on the main exhaust duct 201 to prevent mucus and water vapor from clogging the gas duct 200.

[0068] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0070] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An adjustable pharyngeal ventilator, characterized in that: include: A bite (100), wherein the bite (100) is provided with a through hole (101); A gas conduit (200), the gas conduit (200) being movably engaged in the through hole (101), the gas conduit (200) comprising a main exhaust duct (201) and an oxygen supply interlayer (202), a sampling airway (203) being provided in the main exhaust duct (201), and oxygen flowing out from a region between the oxygen supply interlayer (202) and the main exhaust duct (201); An adjustment assembly, comprising an impeller (300) rotatably sleeved between the oxygen supply interlayer (202) and the main exhaust channel (201), wherein the impeller (300) controls the sampling air channel (203) to move away from the oxygen supply interlayer (202) when the oxygen intake flow rate increases; The cleaning mechanism comprises a plug (400) arranged on the end surface of the sampling airway (203), wherein the plug (400) clears mucus from the inner wall of the main exhaust channel (201) when the sampling airway (203) moves.

2. The adjustable pharyngeal ventilator according to claim 1, characterized in that: The end faces of the gas conduit (200) are respectively connected with an air inlet pipe (1001) and an air outlet pipe (1002); the air inlet pipe (1001) is connected with the oxygen supply interlayer (202); the main exhaust channel (201) is connected with the air outlet pipe (1002); the sampling air channel (203) is slidably arranged in the air outlet pipe (1002); and an oxygen outlet (1003) is arranged in an array at one end of the oxygen supply interlayer (202) close to the main exhaust channel (201).

3. The adjustable pharyngeal ventilator according to claim 2, characterized in that: A first cylinder (1004) is fixedly disposed in the main exhaust duct (201), a second cylinder (1005) is slidably disposed in the first cylinder (1004), a third cylinder (1006) is slidably disposed in the second cylinder (1005), and the sampling air duct (203) passes through the third cylinder (1006) and moves synchronously therewith.

4. The adjustable pharyngeal ventilator according to claim 3, characterized in that: A first water bag (1007) and a second water bag (1008) are respectively arranged inside the main exhaust channel (201), a first flow channel (1009) is opened on the first cylinder (1004), and a second flow channel (1011) is opened on the second cylinder (1005).

5. The adjustable pharyngeal ventilator according to claim 4, characterized in that: The impeller (300) is coaxially sleeved with a rotating ring (3001) outside, the rotating ring (3001) has ratchet teeth (3002) on its inner wall, and a rotating shaft (3003) on its outer wall. When the rotation speed of the impeller (3000) exceeds a set threshold, the impeller (300) starts to drive the rotating ring (3001) and the rotating shaft (3003) to rotate.

6. The adjustable pharyngeal ventilator according to claim 5, characterized in that: One end of the impeller (300) is rotatably mounted on the outer wall of the sampling airway (203), and the other end is fixedly provided with a connecting ring (3004); a groove (3005) is formed on the end surface of the connecting ring (3004), and a ratchet (3006) is rotatably disposed in the groove (3005); A first elastic member (3007) is provided on the outer wall of the pawl (3006) and the inner wall of the groove (3005). In an initial state, the first elastic member (3007) pulls the pawl (3006) back into the groove (3005). After the rotation speed of the connecting ring (3004) exceeds a set rotation speed threshold, the pawl (3006) swings outward and engages with the ratchet (3002).

7. The adjustable pharyngeal ventilator according to claim 6, characterized in that: A pulley (3008) is provided at one end of the rotating shaft (3003); a connecting cavity (3009) is provided between the first water bag (1007) and the second water bag (1008); a rack (3011) is slidably provided in the connecting cavity (3009); and a transmission tooth (3012) is meshed on the upper end surface of the rack (3011); An annular groove (3013) is provided on one end face of the transmission tooth (3012); a synchronous belt (3014) is sleeved between the annular groove (3013) and the outer wall of the pulley (3008); and a sealing plate (3015) is slidably provided on one end of the rack (3011) away from the pulley (3008).

8. The adjustable pharyngeal ventilator according to claim 7, characterized in that: Sliding columns (3016) are slidably provided at both ends of the rack (3011), a single tooth (3017) is provided at the other end of the sliding column (3016), and a second elastic member (3018) is provided between the single tooth (3017) and the rack (3011).

9. The adjustable pharyngeal ventilator according to claim 8, characterized in that: The sampling air channel (203) is provided with a rolling ring (2001) near the outlet of the main exhaust channel (201), and the rolling ring (2001) is driven to roll synchronously when the sampling air channel (203) moves; The outer wall of the plug (400) is provided with a corrugated scraper (2002), and the end surface of the plug (400) is also provided with a blocking net (2003). The plug (400) is rotatably arranged on the inner wall of the main exhaust duct (201).

10. The adjustable pharyngeal ventilator according to claim 9, characterized in that: The inner wall of the plug (400) is also provided with a spiral groove (2004), and the outer wall of the sampling airway (203) is rotatably provided with a sphere (2005), and the sphere (2005) is rolled on the inner wall of the spiral groove (2004).

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