An acute airway obstruction airway patency device

Abstract

The application provides an acute respiratory tract obstruction airway patency device, belonging to the technical field of medical treatment, comprising a connecting suction pipe, a sputum suction head and a negative pressure suction mechanism, the sputum suction head is arranged at the insertion end of the connecting suction pipe, the sputum suction head comprises a suction head front part and a suction head rear part, the suction head front part and the suction head rear part are relatively movable along the axial direction, the suction head rear part is rotationally connected with the connecting suction pipe, the negative pressure suction mechanism is arranged at the distal end of the insertion end of the connecting suction pipe, and the surface of the suction head rear part is provided with a suction hole; an elastic membrane is arranged in the suction hole, the inside of the elastic membrane is provided with a ring-shaped double-layer structure, and the opening end of the elastic membrane is fixedly connected with the inner surface of the suction hole; through the cooperation of the elastic membrane and the hole diameter control mechanism, the hole diameter of the suction hole can be automatically adjusted according to the pressure change of the suction hole, airway injury caused by negative pressure adsorption is avoided, and the technical defects that the existing airway patency device causes the suction hole to adsorb the airway wall due to sputum accumulation during sputum suction are solved.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and more specifically, to a device for clearing airways in cases of acute respiratory obstruction. Background Technology

[0002] In clinical practice, acute airway obstruction is a common but life-threatening emergency, frequently occurring in various clinical situations such as severe coma, post-anesthesia, cardiopulmonary resuscitation, and acute exacerbations of chronic obstructive pulmonary disease (COPD). When airway obstruction occurs due to impaired consciousness, respiratory muscle weakness, or increased airway secretions, timely and effective measures must be taken to clear the airway secretions in order to restore and maintain normal gas exchange function. Currently, negative pressure suction devices are the most commonly used method for clearing airway secretions in clinical practice and are widely used in procedures such as sputum suction and airway clearance.

[0003] Existing airway patency devices mostly employ the principle of negative pressure suction, using a suction catheter to remove sputum, blood, or other secretions from the airway. A negative pressure suction system typically includes a negative pressure source (such as an electric suction device or a central negative pressure system), connecting tubing, a suction catheter, and a collection bottle. During operation, the operator can adjust the negative pressure source according to the patient's airway condition to generate a suitable and stable negative pressure, drawing secretions into the lumen through the suction port at the tip of the suction catheter and ultimately collecting them in the collection bottle, thus achieving airway cleansing. However, during suctioning, the high viscosity of the sputum can easily cause partial blockage at the suction port, reducing the effective suction port area. With a narrower suction port, the negative pressure intensity per unit area increases, significantly enhancing the suction force of the suction port on the airway wall. This can easily cause airway mucosa to be adsorbed, stretched, or even damaged, leading to local bleeding or inflammatory reactions, and even airway spasm or further narrowing, thus endangering the patient's life. Therefore, a new airway patency device for acute airway obstruction is proposed. Summary of the Invention

[0004] In view of the problem of airway wall adhesion caused by changes in suction hole pressure due to sputum accumulation in existing airway patency devices during suctioning, the purpose of this invention is to provide an airway patency device for acute respiratory obstruction.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] An airway patency device for acute airway obstruction includes a connecting straw and a sputum suction head, and a negative pressure suction mechanism. The sputum suction head is disposed at the insertion end of the connecting straw and includes a front part and a rear part, which are axially movable relative to each other. The rear part is rotatably connected to the connecting straw. The negative pressure suction mechanism is disposed at the distal end of the insertion end of the connecting straw, and a suction hole is provided on the surface of the rear part of the suction head.

[0007] An elastic membrane is provided inside the suction hole. The elastic membrane has an annular double-layer structure, and the open end of the elastic membrane is fixedly connected to the inner surface of the suction hole. An aperture adjustment mechanism is provided inside the elastic membrane. The aperture adjustment mechanism adjusts the size of the suction hole flow aperture by controlling the tension of the elastic membrane.

[0008] Optionally, both the front and rear parts of the suction head are cylindrical. One end of the front part of the suction head is closed, and the other end is open. Both ends of the rear part of the suction head are open. A connecting groove is provided inside the rear part of the suction head to mate with the open end of the front part of the suction head. The open end of the front part of the suction head is inserted into the connecting groove. A rotating part is fixedly connected to the other end of the rear part of the suction head. A rotating guide groove is provided inside the insertion end of the connecting tube. The rotating part is rotatably installed inside the rotating guide groove. A rotating mechanism is provided inside the connecting tube to provide power for the rotation of the sputum suction head.

[0009] Optionally, the aperture adjustment mechanism includes multiple sets of sliding grooves formed inside the rear part of the suction head. The sliding grooves are arranged around the suction hole. Each set of sliding grooves is provided with a connecting rod. One end of the connecting rod is T-shaped and slidably installed inside the sliding groove. The other end of the connecting rod passes through the rear sidewall of the suction head to the interior of the elastic membrane and is fixedly connected to the closed end of the elastic membrane. An air pressure compensation component is provided inside the sliding groove to drive the connecting rod to move inside the sliding groove.

[0010] Optionally, the air pressure compensation component includes a first elastic bladder and a second elastic bladder. The first elastic bladder is sleeved on the outer surface of the connecting rod, and one end of the first elastic bladder is fixedly connected to the T-shaped end of the connecting rod. The other end of the first elastic bladder is fixedly connected to the inner surface of the slide groove. The second elastic bladder is located inside the connecting groove. The first elastic bladder and the second elastic bladder are connected by a connecting pipeline.

[0011] Optionally, in its natural state, the second elastic capsule is in a saturated state, and the first elastic capsule is in an elastically contracted state.

[0012] Optionally, each of the slide grooves is provided with a support spring, one end of which is fixedly connected to the connecting rod, and the other end of which is fixedly connected to the inner surface of the slide groove.

[0013] Optionally, the connecting pipe network includes a ring pipe, connecting branch pipes, and a connecting main pipe. The rear part of the suction head is pre-opened with an installation groove that is compatible with the ring pipe, connecting branch pipes, and connecting main pipe. The ring pipe is arranged around the suction hole but does not coincide with the sliding groove. Multiple sets of connecting branch pipes are provided, and each connecting branch pipe corresponds to a first elastic bladder. The connecting branch pipe connects the corresponding first elastic bladder to the ring pipe. The connecting main pipe is used to connect the ring pipe and the second elastic bladder.

[0014] Optionally, the rotating mechanism includes a connecting plate, a cylinder, a lead screw, and a driving component. The connecting plate is fixedly installed at the middle of one end of the cylinder. The cylinder is coaxially arranged with the rear of the suction head, and one end of the cylinder protrudes and is fixedly connected to the inner surface of the connecting suction tube. The other end of the cylinder contacts the connecting plate but is not connected. A lead screw is rotatably connected inside the cylinder. One end of the lead screw passes through the cylinder and is fixedly connected to the connecting plate. A ball bearing seat adapted to the lead screw is sleeved on the outer surface of the lead screw. The ball bearing seat is rectangular, and the inside of the cylinder is configured with a groove adapted to the ball bearing seat. The driving component is used to drive the ball bearing seat to move back and forth along the lead screw.

[0015] Optionally, the driving component includes a connecting spring, an air tube, a telescopic bladder, and a balloon. The telescopic bladder is annular and sleeved on the outside of the lead screw. One end of the telescopic bladder is fixedly connected to a ball bearing seat, and the other end of the telescopic bladder is fixedly connected to the inner surface of the cylinder. The air tube is disposed inside the connecting straw. One end of the air tube passes through the cylinder and communicates with the telescopic bladder. The other end of the air tube is located outside the air tube and is provided with a balloon. The connecting spring is sleeved on the outer surface of the lead screw. One end of the connecting spring is fixedly connected to the ball bearing seat, and the other end of the connecting spring is fixedly connected to the inner surface of the cylinder.

[0016] Optionally, the negative pressure suction mechanism includes a tank, a negative pressure pipe, and a negative pressure connector. The tank is connected to a connecting suction pipe through the negative pressure pipe, and the tank is connected to an external negative pressure source through the negative pressure connector.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0018] In the above solution, through the synergistic effect of the elastic membrane and the aperture control mechanism, the aperture of the suction hole can be automatically adjusted according to the pressure change at the suction hole, avoiding airway damage caused by negative pressure adsorption, and solving the technical defect of existing airway patency devices that cause the suction hole to adhere to the airway wall due to sputum accumulation during the suction process.

[0019] By setting up a rotating mechanism that works in conjunction with the sputum suction head, only the sputum suction head is driven to rotate, avoiding damage to the airway mucosa, expanding the cleaning range of the suction hole, and improving suction efficiency.

[0020] The air pressure compensation component enables the device to sense changes in suction orifice pressure in real time, and to transmit and regulate pressure through the elastic bladder and connecting pipeline network, ensuring that the suction orifice is always in optimal working condition. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a cross-sectional view of the connection between the straw and the sputum suction head of the present invention;

[0024] Figure 3 This is a schematic diagram of the sputum suction head of the present invention;

[0025] Figure 4 This is a cross-sectional view of the sputum suction head and rotating mechanism of the present invention;

[0026] Figure 5 For the present invention Figure 4 A partial structural diagram;

[0027] Figure 6 For the present invention Figure 4 Enlarged view of point A in the middle;

[0028] Figure 7 This is a cross-sectional view of the rotating mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the connecting pipe network structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the negative pressure suction mechanism of the present invention.

[0031] [Figure Labels]

[0032] 1. Connect the straw;

[0033] 2. Sputum suction tip; 21. Suction hole; 22. Elastic membrane; 23. Front part of suction tip; 24. Rear part of suction tip; 25. Rotating part; 26. Rotary guide groove; 27. Connecting groove;

[0034] 3. Rotating mechanism; 31. Connecting plate; 32. Cylinder; 33. Lead screw; 34. Ball bearing seat; 35. Connecting spring; 36. Air tube; 37. Telescopic bladder; 38. Balloon;

[0035] 4. Negative pressure suction mechanism; 41. Tank body; 42. Negative pressure pipe; 43. Negative pressure connector;

[0036] 5. Aperture adjustment mechanism; 51. Connecting rod; 52. First elastic bladder; 53. Slide groove; 54. Support spring; 55. Connecting pipe network; 551. Ring pipe; 552. Connecting branch pipe; 553. Connecting main pipe; 56. Second elastic bladder.

[0037] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0038] The airway patency device for acute respiratory obstruction provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0039] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0040] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0041] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0042] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0043] like Figures 1 to 4 As shown, this embodiment of the invention provides an airway clearing device for acute airway obstruction, including a connecting straw 1 and a sputum suction head 2 and a negative pressure suction mechanism 4. The sputum suction head 2 is disposed at the insertion end of the connecting straw 1. The sputum suction head 2 includes a front part 23 and a rear part 24. The front part 23 and the rear part 24 are axially movable relative to each other. The rear part 24 is rotatably connected to the connecting straw 1. The negative pressure suction mechanism 4 is disposed at the distal end of the insertion end of the connecting straw 1. A suction hole 21 is provided on the surface of the rear part 24.

[0044] like Figure 3 As shown, an elastic membrane 22 is provided inside the suction hole 21. The elastic membrane 22 has an annular double-layer structure, and the open end of the elastic membrane 22 is fixedly connected to the inner surface of the suction hole 21. An aperture adjustment mechanism 5 is provided inside the elastic membrane 22. The aperture adjustment mechanism 5 adjusts the flow aperture of the suction hole 21 by controlling the tension of the elastic membrane 22.

[0045] like Figure 9 As shown, the negative pressure suction mechanism 4 includes a tank 41, a negative pressure pipe 42, and a negative pressure connector 43. The tank 41 is connected to the connecting suction pipe 1 through the negative pressure pipe 42. The tank 41 is connected to an external negative pressure source through the negative pressure connector 43. The interface between the negative pressure connector 43 and the negative pressure source adopts the existing conventional plug-in method or other connection method, as long as the airtightness of the connection can be guaranteed.

[0046] In this embodiment, when the negative pressure source is activated, a negative pressure is formed inside the canister 41, and this negative pressure is transmitted to the connecting suction tube 1 and the sputum suction head 2 through the negative pressure tube 42, thereby achieving the suction of sputum in the airway. During the suctioning process, the sputum enters the connecting suction tube 1 through the suction hole 21 and is transported to the inside of the canister 41 for storage through the negative pressure tube 42. The negative pressure source can be a portable negative pressure suction pump or a medical central negative pressure system, depending on the actual medical situation. During use, the operator can adjust the negative pressure source according to the patient's airway environment to generate a stable negative pressure at a suitable level.

[0047] like Figure 4 as well as Figure 5As shown, both the front part 23 and the rear part 24 of the suction head are cylindrical. One end of the front part 23 is closed, with rounded edges to prevent damage to the airway during insertion, while the other end is open. Both ends of the rear part 24 are open. One end of the rear part 24 has a connecting groove 27 that mates with the open end of the front part 23. The open end of the front part 23 is inserted into the connecting groove 27. The other end of the rear part 24 is fixedly connected to a rotating part 25. The insertion end of the connecting tube 1 has a rotating guide groove 26, and the rotating part 25 is rotatably mounted inside the rotating guide groove 26. The connecting tube 1 has a rotating mechanism 3 inside, which provides power for the rotation of the sputum suction head 2. In actual use, sealing rings can be provided on the open end of the front part 23 and the surface of the rotating part 25 to ensure the sealing of the connection between the front part 23, the rear part 24, and the connecting tube 1.

[0048] like Figure 3 , Figure 4 , Figure 6 as well as Figure 8 As shown, the aperture control mechanism 5 includes multiple sets of slide grooves 53 inside the rear part 24 of the suction head. The slide grooves 53 are arranged around the suction hole 21. Each set of slide grooves 53 is provided with a connecting rod 51. One end of the connecting rod 51 is T-shaped and slidably installed inside the slide groove 53. The other end of the connecting rod 51 passes through the side wall of the rear part 24 of the suction head to the interior of the elastic membrane 22 and is fixedly connected to the closed end of the elastic membrane 22. The slide groove 53 is provided with an air pressure compensation component, which is used to drive the connecting rod 51 to move inside the slide groove 53.

[0049] like Figure 5 and Figure 6 As shown, the air pressure compensation assembly includes a first elastic bladder 52 and a second elastic bladder 56. The first elastic bladder 52 is sleeved on the outer surface of the connecting rod 51, and one end of the first elastic bladder 52 is fixedly connected to the T-shaped end of the connecting rod 51. The other end of the first elastic bladder 52 is fixedly connected to the inner surface of the slide groove 53. The second elastic bladder 56 is located inside the connecting groove 27. The first elastic bladder 52 and the second elastic bladder 56 are connected by a connecting pipe network 55. In the natural state, the second elastic bladder 56 is in a saturated state, and the first elastic bladder 52 is in an elastically contracted state. Each slide groove 53 is provided with a support spring 54. One end of the support spring 54 is fixedly connected to the connecting rod 51, and the other end of the support spring 54 is fixedly connected to the inner surface of the slide groove 53. The function of the support spring 54 is to provide additional elastic support force to ensure that the connecting rod 51 can move stably when the air pressure changes and quickly return to its original position after the pressure is restored, so that the suction hole 21 returns to its initial diameter state.

[0050] like Figure 8As shown, the connecting pipe network 55 includes an annular pipe 551, connecting branch pipes 552, and connecting main pipe 553. The rear part 24 of the suction head is pre-cut with an installation groove that is compatible with the annular pipe 551, connecting branch pipes 552, and connecting main pipe 553. The annular pipe 551 is arranged around the suction hole 21 but does not coincide with the sliding groove 53. Multiple sets of connecting branch pipes 552 are arranged, and each connecting branch pipe 552 corresponds to a first elastic bladder 52. The connecting branch pipe 552 connects the corresponding first elastic bladder 52 to the annular pipe 551. The connecting main pipe 553 is used to connect the annular pipe 551 and the second elastic bladder 56.

[0051] In this embodiment, when the negative pressure around the suction hole 21 increases significantly due to sputum accumulation, the pressure difference between the inside and outside of the suction head 2 increases. The front part 23 of the suction head moves under pressure, squeezing the second elastic bladder 56. The gas in the second elastic bladder 56 flows into the first elastic bladder 52 through the connecting pipe network 55, causing it to expand and thus pushing the connecting rod 51 into the groove 53. The movement of the connecting rod 51 causes the elastic membrane 22 to contract, increasing the flow diameter of the suction hole 21, reducing the local negative pressure, avoiding the adsorption phenomenon between the suction hole 21 and the airway wall, and facilitating the flow of sputum through the suction hole 21 into the connecting tube 1.

[0052] like Figure 7 As shown, the rotating mechanism 3 includes a connecting plate 31, a cylinder 32, a lead screw 33, and a driving component. The cylinder 32 is coaxially arranged with the rear part 24 of the suction head, and one end of the cylinder 32 protrudes and is fixedly connected to the inner surface of the connecting tube 1. The other end of the cylinder 32 contacts the connecting plate 31 but is not connected to it, so as to allow the sputum suction head 2 to rotate freely. The lead screw 33 is rotatably connected inside the cylinder 32. One end of the lead screw 33 passes through the cylinder 32 and is fixedly connected to the connecting plate 31. A ball bearing seat 34 adapted to it is sleeved on the outer surface of the lead screw 33. The ball bearing seat 34 is rectangular, and the inside of the cylinder 32 is set with a groove adapted to the ball bearing seat 34. The driving component is used to drive the ball bearing seat 34 to move back and forth along the lead screw 33, thereby driving the lead screw 33 to rotate, driving the connecting plate 31 and the sputum suction head 2 to rotate.

[0053] During suctioning, sputum is often unevenly distributed in the airway and may adhere to different locations on the airway wall. Currently, operators mainly rotate the suction catheter to change the orientation of the suction port 21, allowing the suction to cover a larger area of ​​the airway wall, thereby improving the comprehensiveness and efficiency of suctioning. However, the suction catheter may bend at the larynx during insertion, making rotation difficult, and forced rotation may cause damage to the airway mucosa.

[0054] In this embodiment, by setting a rotating mechanism 3 to cooperate with the sputum suction head 2, only the sputum suction head 2 is driven to rotate, which avoids damage to the airway mucosa, expands the cleaning range of the suction hole 21, and improves the suction efficiency.

[0055] like Figure 7and Figure 9 As shown, the driving component includes a connecting spring 35, an air tube 36, a telescopic bladder 37, and a balloon 38. The telescopic bladder 37 is annular and sleeved on the outside of the lead screw 33. One end of the telescopic bladder 37 is fixedly connected to the ball bearing seat 34, and the other end of the telescopic bladder 37 is fixedly connected to the inner surface of the cylinder 32. The air tube 36 is located inside the connecting straw 1. One end of the air tube 36 passes through the cylinder 32 and is connected to the telescopic bladder 37. The other end of the air tube 36 is located outside the air tube 36 and is provided with a balloon 38. The connecting spring 35 is sleeved on the outer surface of the lead screw 33. One end of the connecting spring 35 is fixedly connected to the ball bearing seat 34, and the other end of the connecting spring 35 is fixedly connected to the inner surface of the cylinder 32.

[0056] In this embodiment, the operator can press the balloon 38 to inflate or contract the telescopic balloon 37, thereby moving the ball bearing seat 34 along the lead screw 33. The connecting spring 35 provides a restoring force, allowing the ball bearing seat 34 to automatically return to its original position after the drive stops. As the operator repeatedly presses the balloon 38, the ball bearing seat 34 can move back and forth along the lead screw 33, thereby causing the lead screw 33 and the connecting plate 31 to rotate.

[0057] It should be noted that the ball screw is an existing transmission element whose main function is to convert rotary motion into linear motion or vice versa. The structure and working principle of the ball seat 34 and the screw 33 are existing conventional technologies and will not be described in detail here. In addition, the models of the ball seat 34 and the screw 33 are selected according to actual needs. Here, no requirements are made on the models of the ball seat 34 and the screw 33.

[0058] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An airway patency device for acute airway obstruction, comprising a suction tube and a sputum suction tip, and a negative pressure suction mechanism, characterized in that, The sputum suction head is located at the insertion end of the connecting suction tube. The sputum suction head includes a front part and a rear part, which are axially movable relative to each other. The rear part of the suction head is rotatably connected to the connecting suction tube. The negative pressure suction mechanism is located at the distal end of the insertion end of the connecting suction tube. A suction hole is provided on the surface of the rear part of the suction head. An elastic membrane is provided inside the suction hole. The elastic membrane has an annular double-layer structure, and the open end of the elastic membrane is fixedly connected to the inner surface of the suction hole. An aperture adjustment mechanism is provided inside the elastic membrane. The aperture adjustment mechanism adjusts the size of the flow hole by controlling the tension of the elastic membrane. The aperture adjustment mechanism includes multiple sets of sliding grooves inside the rear part of the suction head. The sliding grooves are arranged around the suction hole. Each set of sliding grooves is provided with a connecting rod. One end of the connecting rod is T-shaped and slidably installed inside the sliding groove. The other end of the connecting rod passes through the rear side wall of the suction head to the interior of the elastic membrane and is fixedly connected to the closed end of the elastic membrane.

2. The airway patency device for acute airway obstruction according to claim 1, characterized in that, Both the front and rear parts of the suction head are cylindrical. One end of the front part of the suction head is closed, and the other end is open. Both ends of the rear part of the suction head are open. A connecting groove is opened inside the rear part of the suction head to mate with the open end of the front part of the suction head. The open end of the front part of the suction head is inserted into the connecting groove. A rotating part is fixedly connected to the other end of the rear part of the suction head. A rotating guide groove is opened inside the insertion end of the connecting tube. The rotating part is rotatably installed inside the rotating guide groove. A rotating mechanism is provided inside the connecting tube, and the rotating mechanism provides power for the rotation of the sputum suction head.

3. The airway patency device for acute airway obstruction according to claim 2, characterized in that, The slide is equipped with a pneumatic compensation component, which is used to drive the connecting rod to move inside the slide.

4. The airway patency device for acute airway obstruction according to claim 3, characterized in that, The air pressure compensation component includes a first elastic bladder and a second elastic bladder. The first elastic bladder is sleeved on the outer surface of the connecting rod, and one end of the first elastic bladder is fixedly connected to the T-shaped end of the connecting rod. The other end of the first elastic bladder is fixedly connected to the inner surface of the slide groove. The second elastic bladder is located inside the connecting groove. The first elastic bladder and the second elastic bladder are connected by a connecting pipeline.

5. The airway patency device for acute airway obstruction according to claim 4, characterized in that, Under natural conditions, the second elastic capsule is in a saturated state, and the first elastic capsule is in an elastically contracted state.

6. The airway patency device for acute airway obstruction according to claim 5, characterized in that, Each slide groove is equipped with a support spring. One end of the support spring is fixedly connected to the connecting rod, and the other end of the support spring is fixedly connected to the inner surface of the slide groove.

7. The airway patency device for acute airway obstruction according to claim 5, characterized in that, The connecting pipe network includes a ring pipe, connecting branch pipes, and a connecting main pipe. The rear of the suction head is pre-cut with an installation groove that matches the ring pipe, connecting branch pipes, and connecting main pipe. The ring pipe surrounds the suction hole but does not overlap with the sliding groove. Multiple sets of connecting branch pipes are provided, and each connecting branch pipe corresponds to a first elastic bladder. The connecting branch pipe connects the corresponding first elastic bladder to the ring pipe. The connecting main pipe is used to connect the ring pipe and the second elastic bladder.

8. The airway patency device for acute airway obstruction according to claim 5, characterized in that, The rotating mechanism includes a connecting plate, a cylinder, a lead screw, and a driving component. The connecting plate is fixedly installed at the middle of one end of the cylinder. The cylinder is coaxially arranged with the rear of the suction head, and one end of the cylinder protrudes and is fixedly connected to the inner surface of the connecting suction tube. The other end of the cylinder contacts the connecting plate but is not connected. A lead screw is rotatably connected inside the cylinder. One end of the lead screw passes through the cylinder and is fixedly connected to the connecting plate. A ball bearing seat adapted to the lead screw is sleeved on the outer surface of the lead screw. The ball bearing seat is rectangular, and the inside of the cylinder is configured with a groove adapted to the ball bearing seat. The driving component is used to drive the ball bearing seat to move back and forth along the lead screw.

9. The airway patency device for acute airway obstruction according to claim 8, characterized in that, The driving component includes a connecting spring, an air tube, a telescopic bladder, and a balloon. The telescopic bladder is annular and sleeved on the outside of the lead screw. One end of the telescopic bladder is fixedly connected to a ball bearing seat, and the other end of the telescopic bladder is fixedly connected to the inner surface of the cylinder. The air tube is located inside the connecting straw. One end of the air tube passes through the cylinder and communicates with the telescopic bladder. The other end of the air tube is located outside the air tube and is equipped with a balloon. The connecting spring is sleeved on the outer surface of the lead screw. One end of the connecting spring is fixedly connected to the ball bearing seat, and the other end of the connecting spring is fixedly connected to the inner surface of the cylinder.

10. The airway patency device for acute airway obstruction according to claim 1, characterized in that, The negative pressure suction mechanism includes a tank, a negative pressure pipe, and a negative pressure connector. The tank is connected to a suction pipe via the negative pressure pipe, and the tank is connected to an external negative pressure source via the negative pressure connector.

Images