Intensive care unit (ICU) nursing sputum aspirator

Abstract

The ICU nursing sputum aspirator comprises an oral cavity opening device, a rear neck supporting device and a mechanical sputum suction structure, the oral cavity opening device is placed in the oral cavity of a patient and used for supporting the oral cavity of the patient, the patient is prevented from being closed in the sputum suction process, the rear neck supporting device makes contact with the rear neck of the patient, and the mechanical sputum suction structure is arranged on the rear neck of the patient. The oral cavity distraction device supports the rear neck of the patient, the head of the patient leans backwards, the laryngeal cavity of the patient is opened, and the mechanical sputum suction structure is fixedly connected with the oral cavity distraction device through a support and used for extracting sputum in the throat of the patient. The invention belongs to the technical field of ICU nursing equipment. In order to solve the problems that in the existing sputum suction process, the oral cavity of a patient is unconsciously closed, and sputum suction equipment is large in structure and inconvenient to operate, the ICU nursing sputum suction apparatus is provided, the oral cavity of the patient can be in a continuous opening state, and the sputum suction equipment is small, easy to store and easy to operate. And an effective sputum suction means can be provided for a patient in an emergency.

Description

Technical Field

[0001] The invention belongs to the technical field of ICU nursing equipment, and specifically refers to an ICU nursing sputum suction device. Background Art

[0002] Suctioning refers to a method of sucking out respiratory secretions through the mouth, nose, or artificial airway (tracheotomy) to keep the airway open and prevent complications such as aspiration pneumonia, atelectasis, and suffocation. At present, suctioning is one of the commonly used nursing techniques in clinical nursing work, especially for nurses in intensive care units, who frequently perform suction operations and generally use trays to hold medicines, syringes, cotton yarn, and other scattered items.

[0003] Suctioning requires professionals to perform the operation. Since the trachea is cut, the patient's postoperative recovery period is long, which seriously affects the patient's physical activity. If suction is performed by intubation from the mouth or nasal cavity, it is easy to cause unconscious closure of the mouth, resulting in interruption of the suction operation. Therefore, the patient's lips must be open before suctioning. The current suction equipment is a large-scale pneumatic supporting equipment, which is characterized by large size and heavy weight. When an ICU patient is in an emergency, the large equipment is difficult to move, and the patient will go into hypoxic shock during the transportation of the equipment. Therefore, a suction device that is easy to store is needed to provide suction assistance to patients in critical conditions. Summary of the invention

[0004] In view of the above situation, in order to overcome the problems of unconscious closure of the patient's mouth during the current suction process, large structure of the suction equipment and inconvenient operation, the present invention provides an ICU nursing suction device, which allows the patient's mouth to be in a continuously open state. The suction equipment is small, easy to store, and easy to operate, and can provide patients with effective suction means in emergency situations.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides an ICU nursing sputum suction device, including an oral cavity stretching device, a back neck supporting device and a mechanical sputum suction structure. The oral cavity stretching device is placed in the patient's oral cavity to support the patient's oral cavity and prevent the patient from closing it during the sputum suction process. The back neck supporting device contacts the back neck of the patient and supports the back neck of the patient, so that the patient's head tilts back and the laryngeal cavity opens. The mechanical sputum suction structure is fixedly connected to the oral cavity stretching device by a bracket, and the back neck supporting device and the mechanical sputum suction structure are fixedly connected by a bracket to extract sputum from the patient's throat.

[0006] Furthermore, the mechanical sputum suction structure includes a sputum suction gun shell structure, a sputum suction structure and an anti-backflow rotation closing structure. The outer wall of the sputum suction gun shell structure is fixedly connected to the oral opening device by a bracket, the sputum suction structure is snap-fitted and installed in the sputum suction gun shell structure, the anti-backflow rotation closing structure is connected to the sputum suction structure, and the anti-backflow rotation closing structure is snap-fitted and installed in the sputum suction gun shell structure; the sputum suction gun shell structure includes a front suction tube, a trumpet tube and a sputum collecting tube, the sputum collecting tube is fixedly connected to the back neck supporting device by a bracket, the trumpet tube is fixedly installed on the sputum collecting tube, and the front suction tube is fixedly installed on the trumpet tube.

[0007] Furthermore, a thread is provided on the inner wall of the front suction tube, and a truncated cone-shaped groove is provided on the bottom wall of the sputum collection tube.

[0008] Furthermore, the sputum suction structure includes a one-way tube adjustment device and a pulling transmission structure, the one-way tube adjustment device is fixedly installed on the trumpet tube, and the pulling transmission structure is snap-fitted and installed in the sputum collection tube; the one-way tube adjustment device includes a liquid extraction barrier ball, a partition plate, a liquid through-groove, an exhaust pressure-stabilizing tube, and an exhaust barrier ball, the liquid extraction barrier ball is snap-fitted and slidably arranged on the inner wall of the trumpet tube, the partition plate is fixedly installed on the inner wall of the trumpet tube, and the liquid extraction barrier ball and the partition plate are connected by a spring, the liquid through-groove is fixedly arranged on the partition plate, so that the sputum can flow smoothly along the inner wall of the trumpet tube after passing through the partition plate, the exhaust pressure-stabilizing tube is fixedly arranged on the side wall of the trumpet tube, the exhaust barrier ball is snap-fitted and slidably arranged in the exhaust pressure-stabilizing tube, and the exhaust barrier ball and the inner wall of the exhaust pressure-stabilizing tube are connected by a spring.

[0009] Furthermore, the pulling transmission structure includes a piston, a rack, a pull rod, a gear, and a limit plate. The piston is engaged and slid along the inner wall of the sputum collection tube, the gear is engaged and rotatably installed on the inner wall of the sputum collection tube, the rack is fixedly installed on the piston, the pull rod is fixedly connected to the rack, the gear is meshingly connected to the rack, the limit plate is fixedly installed on the pull rod, and the limit plate is connected to the sputum collection tube by a spring.

[0010] Furthermore, a groove is provided on the inner wall of the sputum collection tube, and blocks are provided on the rack and the limit plate respectively, so as to ensure the stability of the rack and the limit plate during the pulling process of the pull rod.

[0011] Furthermore, the anti-backflow rotation closed structure includes bevel gear 1, bevel gear 2, a transmission gear, a chain and a rotating closed structure, the bevel gear 1 is fixedly connected to the gear through a bracket, the bevel gear 2 is engaged and rotatably installed in the sputum collection tube, and the bevel gear 1 is meshed and connected with the bevel gear 2, the transmission gear is connected to the center of the bevel gear 2 through the bracket, the chain is meshed and connected with the transmission gear, and the rotating closed structure is connected to the chain.

[0012] Furthermore, the rotating closed structure includes a sputum drainage pipe, a pinion, a gear ring, a concentric connecting rod, and a hemispherical combination plate. The sputum drainage pipe is connected to the truncated cone-shaped groove on the side wall of the sputum collection tube. The pinion is snap-fitted and rotatably installed on the inner wall of the sputum drainage pipe. The gear ring is snap-fitted and rotatably installed on the inner wall of the sputum drainage pipe. The pinion is meshingly connected with the gear ring. The concentric connecting rod is fixedly arranged on the center of the pinion. The hemispherical combination plate is fixedly installed on the concentric connecting rod, and the pinion is meshingly connected with the gear ring.

[0013] Preferably, the pinion gears are provided with four groups, and the hemispherical combination plates are provided with four groups. The four groups of hemispherical combination plates can be combined into a semi-spherical structure. The chain is meshed with the pinion gears. The above structure satisfies the design effect of pulling the pull rod and driving the pinion gear to rotate when the piston slides, and can create gaps between the hemispherical combination plates, allowing the sputum to flow into the sputum drainage tube.

[0014] Preferably, the rear neck supporting device is configured as an air bag, and the height of the patient's rear neck being lifted is controlled by injecting air into the rear neck supporting device.

[0015] Furthermore, the oral opening device includes an outer lip arc plate 1, a tooth support plate 1, an inner lip arc plate 1, an outer lip arc plate 2, a tooth support plate 2, an inner lip arc plate 2, a screw rod, a nut, a screw rod limiting plate, a motor, and a front end connecting plate. The front end connecting plate is connected to the rear neck support device via a bracket. The motor is fixedly mounted on the front end connecting plate, the screw rod limiting plate is fixedly mounted on the outer wall of the motor, the screw rod is connected to the motor, the nut slides along the screw rod, the outer lip arc plate 2 is fixedly mounted on the outer wall of the nut, one side of the tooth support plate 2 is connected to the outer lip arc plate 2, and the inner lip arc plate 2 is fixedly mounted on the other side of the tooth support plate 2. The outer lip arc plate 1 is rotatably connected with the screw rod, one side of the tooth support plate 1 is fixedly connected to the outer lip arc plate 1, and the inner lip arc plate 1 is fixedly connected to the other side of the tooth support plate 1. The design effect of adjusting the distance between the outer lip arc plate 2 and the outer lip arc plate 1 is achieved by sliding the nut along the screw rod.

[0016] Furthermore, a scale is provided on the top wall of the screw rod limiting plate, the length of the lip outer arc plate 1 is greater than the length of the lip inner arc plate 1, the length of the lip outer arc plate 2 is greater than the length of the lip inner arc plate 2, and the tooth support plate 1 and the tooth support plate 2 are both set as arc structures.

[0017] Furthermore, a threaded hose is provided on the front suction tube, and the front end of the hose is rounded. After the hose is inserted into the throat, the phlegm in the throat is extracted under the action of the piston.

[0018] This scheme provides an ICU nursing sputum suction device, which has the following beneficial effects: (1) With the support of the screw rod and the arc-shaped lip support structure (such as a combination structure of an outer lip arc plate 1, a tooth support plate 1 and an inner lip arc plate 1), the patient's oral cavity can be continuously supported and fixed to prevent the oral cavity from closing during the suction process; (2) By changing the air pressure structure, the sputum in the oral cavity and even the trachea is absorbed into the suction hose. Under the action of the one-way tube, air is sucked from the end of the hose in the oral cavity to suck out the sputum in the trachea. When the piston returns, the gas in the sputum collection tube is discharged from the one-way tube on the side wall of the sputum collection tube. When the sputum cannot be effectively sucked out of the trachea in one operation, the sputum can continue to be stored in the hose and will not be pushed back into the trachea. At the same time, during suction, the rotation combination of the hemispherical combination plate can prevent the sputum from flowing back from the sputum discharge tube to the sputum collection tube to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A stereoscopic diagram of an ICU nursing sputum suction device provided by the present invention; Figure 2 A three-dimensional cross-sectional view of an ICU nursing sputum suction device provided by the present invention; Figure 3 An exploded diagram of an ICU nursing sputum aspirator provided by the present invention; Figure 4 A diagram showing the use status of an ICU nursing sputum aspirator provided by the present invention; Figure 5 This is an exploded view of the mechanical suction structure; Figure 6 A right side view of an ICU nursing sputum suction device provided by the present invention; Figure 7 for Figure 2 A partial enlarged view of part A; Figure 8 for Figure 2 A partial enlarged view of part B; Fig. 9 It is a schematic diagram of the internal structure of the mechanical sputum suction structure; Fig.10 It is a three-dimensional cross-sectional view of a sputum drainage tube; Fig.11 is a schematic diagram of the connection structure between the pinion and the gear ring; Fig.12 This is a right side view of the oral expansion device.

[0020] Among them, 1. oral opening device, 2. back neck support device, 3. mechanical sputum suction structure, 4. sputum suction gun shell structure, 5. sputum suction structure, 6. anti-backflow rotation closure structure, 7. front suction tube, 8. trumpet tube, 9. sputum collection tube, 10. one-way tube adjustment device, 11. pulling transmission structure, 12. liquid extraction barrier ball, 13. partition plate, 14. liquid penetration groove, 15. exhaust voltage stabilizing tube, 16. exhaust barrier ball, 17. piston, 18. rack, 19. pull rod, 20. gear, 21. limit plate, 2 2. Bevel gear one, 23. Bevel gear two, 24. Transmission gear, 25. Chain, 26. Rotating closed structure, 27. Sputum drainage tube, 28. Pinion, 29. Gear ring, 30. Concentric connecting rod, 31. Hemispherical combination plate, 32. Lip outer arc plate one, 33. Tooth support plate one, 34. Lip inner arc plate one, 35. Lip outer arc plate two, 36. Tooth support plate two, 37. Lip inner arc plate two, 38. Screw, 39. Nut, 40. Screw limit plate, 41. Motor, 42. Front connecting plate, 43. Hose.

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] like Figure 1-Figure 12As shown, the present invention provides an ICU nursing sputum suction device, comprising an oral opening device 1, a back neck supporting device 2 and a mechanical sputum suction structure 3. The oral opening device 1 is placed in the patient's oral cavity, the back neck supporting device 2 is in contact with the back neck of the patient, the mechanical sputum suction structure 3 is fixedly connected to the oral opening device 1 via a bracket, and the back neck supporting device 2 and the mechanical sputum suction structure 3 are fixedly connected via a bracket.

[0025] The oral opening device 1 includes a lip outer arc plate 1 32, a tooth support plate 1 33, a lip inner arc plate 1 34, a lip outer arc plate 2 35, a tooth support plate 2 36, a lip inner arc plate 2 37, a screw 38, a nut 39, a screw limit plate 40, a motor 41, and a front connecting plate 42. The front connecting plate 42 is connected to the back neck support device 2 through a bracket, the motor 41 is fixedly mounted on the front connecting plate 42, the screw limit plate 40 is fixedly mounted on the outer wall of the motor 41, and the screw 38 is connected to the motor 41 is connected, the nut 39 is engaged and slid along the screw rod 38, the lip outer arc plate 2 35 is fixedly installed on the outer wall of the nut 39, one side of the tooth support plate 2 36 is connected to the lip outer arc plate 2 35, the lip inner arc plate 2 37 is fixedly installed on the other side of the tooth support plate 2 36, the lip outer arc plate 1 32 is engaged and rotatably connected with the screw rod 38, one side of the tooth support plate 1 33 is fixedly connected to the lip outer arc plate 1 32, and the lip inner arc plate 1 34 is fixedly connected to the other side of the tooth support plate 1 33.

[0026] There is a scale on the top wall of the screw limit plate 40. The length of the outer lip arc plate 1 32 is greater than the length of the inner lip arc plate 1 34. The length of the outer lip arc plate 2 35 is greater than the length of the inner lip arc plate 2 37. The tooth support plate 1 33 and the tooth support plate 2 36 are both set as arc structures.

[0027] The rear neck support device 2 is configured as an air bag.

[0028] The mechanical sputum suction structure 3 includes a sputum suction gun shell structure 4, a sputum suction structure 5 and an anti-backflow rotation closing structure 6. The outer wall of the sputum suction gun shell structure 4 is fixedly connected to the oral opening device 1 through a bracket, the sputum suction structure 5 is snap-fitted and installed in the sputum suction gun shell structure 4, the anti-backflow rotation closing structure 6 is connected to the sputum suction structure 5, and the anti-backflow rotation closing structure 6 is snap-fitted and installed in the sputum suction gun shell structure 4; the sputum suction gun shell structure 4 includes a front suction tube 7, a trumpet tube 8 and a sputum collection tube 9. The sputum collection tube 9 is fixedly connected to the back neck support device 2 through a bracket, the trumpet tube 8 is fixedly installed on the sputum collection tube 9, and the front suction tube 7 is fixedly installed on the trumpet tube 8.

[0029] The inner wall of the front suction tube 7 is provided with a thread, and the bottom wall of the sputum collection tube 9 is provided with a truncated cone-shaped groove.

[0030] The sputum suction structure 5 includes a one-way tube adjustment device 10 and a pulling transmission structure 11. The one-way tube adjustment device 10 is fixedly installed on the trumpet tube 8, and the pulling transmission structure 11 is snap-fitted and installed in the sputum collection tube 9; the one-way tube adjustment device 10 includes a liquid extraction barrier ball 12, a partition plate 13, a liquid penetration groove 14, an exhaust pressure-stabilizing tube 15, and an exhaust barrier ball 16. The liquid extraction barrier ball 12 is snap-fitted and slidably set on the inner wall of the trumpet tube 8, the partition plate 13 is fixedly installed on the inner wall of the trumpet tube 8, and the liquid extraction barrier ball 12 and the partition plate 13 are connected by a spring, the liquid penetration groove 14 is fixedly set on the partition plate 13, the exhaust pressure-stabilizing tube 15 is fixedly set on the side wall of the trumpet tube 8, the exhaust barrier ball 16 is snap-fitted and slidably set in the exhaust pressure-stabilizing tube 15, and the exhaust barrier ball 16 and the inner wall of the exhaust pressure-stabilizing tube 15 are connected by a spring.

[0031] The pulling transmission structure 11 includes a piston 17, a rack 18, a pull rod 19, a gear 20, and a limit plate 21. The piston 17 is engaged and slid along the inner wall of the sputum collection tube 9, the gear 20 is engaged and rotatably installed on the inner wall of the sputum collection tube 9, the rack 18 is fixedly installed on the piston 17, the pull rod 19 is fixedly connected to the rack 18, the gear 20 is meshed and connected to the rack 18, the limit plate 21 is fixedly installed on the pull rod 19, and the limit plate 21 is connected to the sputum collection tube 9 by a spring.

[0032] A clamping groove is provided on the inner wall of the sputum collecting tube 9 , and clamping blocks are provided on the rack 18 and the limiting plate 21 respectively.

[0033] The anti-backflow rotation closing structure 6 includes a bevel gear 1 22, a bevel gear 23, a transmission gear 24, a chain 25 and a rotating closing structure 26. The bevel gear 1 22 is fixedly connected to the gear 20 through a bracket, the bevel gear 23 is engaged and rotatably installed in the sputum collection tube 9, and the bevel gear 1 22 is meshed and connected with the bevel gear 23. The transmission gear 24 is connected to the center of the bevel gear 23 through the bracket, the chain 25 is meshed and connected with the transmission gear 24, and the rotating closing structure 26 is connected with the chain 25.

[0034] The rotating closed structure 26 includes a sputum drainage pipe 27, a pinion 28, a gear ring 29, a concentric connecting rod 30, and a hemispherical combination plate 31. The sputum drainage pipe 27 is connected to the truncated cone-shaped groove on the side wall of the sputum collection tube 9. The pinion 28 is mounted on the inner wall of the sputum drainage pipe 27 for engagement and rotation. The gear ring 29 is mounted on the inner wall of the sputum drainage pipe 27 for engagement and rotation. The pinion 28 is meshedly connected with the gear ring 29. The concentric connecting rod 30 is fixedly arranged on the center of the pinion 28. The hemispherical combination plate 31 is fixedly mounted on the concentric connecting rod 30, and the pinion 28 is meshedly connected with the gear ring 29.

[0035] There are four groups of pinion gears 28 , four groups of hemispherical combination plates 31 , and the chain 25 is meshed with the pinion gears 28 .

[0036] A hose 43 connected with the front suction pipe 7 is provided, and the front end of the hose 43 is rounded.

[0037] When in use, the tooth support plate 1 33 and the tooth support plate 2 36 are respectively placed against the patient's upper and lower front teeth, the lip outer arc plate 1 32 and the lip inner arc plate 1 34 limit the patient's upper lip, and the lip outer arc plate 2 35 and the lip inner arc plate 2 37 limit the patient's lower lip. The motor 41 is energized to rotate the screw rod 38, and the nut 39 drives the lip outer arc plate 2 35 away from the lip outer arc plate 1 32, so that the distance between the tooth support plate 2 36 and the tooth support plate 1 33 becomes larger, thereby opening the patient's mouth. In this process, the nut 3 can be determined according to the scale on the screw rod limit plate 40. 9's moving distance; inflate the back neck support device 2 to expand the back neck support device 2, so that the patient's back neck muscles are supported, so that the patient's head is tilted back, the throat is opened, and the sputum suction hose 43 is inserted into the throat to prepare for sputum suction; the other end of the hose 43 is rotated and threaded into the front suction tube 7, and the pull rod 19 is pulled to make the piston 17 slide along the inner wall of the sputum collection tube 9. As the piston 17 moves, the air pressure intensity at both ends of the hose 43 changes, similar to the way a needle tube extracts medicine, and the sputum in the throat is sucked into the hose 43; when the piston 17 moves During the movement, the rack 18 slides along the groove on the inner wall of the sputum collection tube 9, and the gear 20 is rotated by the meshing action of the rack 18. When the gear 20 rotates, it drives the bevel gear 1 22 to rotate, and drives the bevel gear 2 23 to rotate at the same time. Through the transmission of the chain 25, the power is transmitted to the pinion 28, so that the pinion 28 rotates. Under the action of the gear ring 29, the remaining arrays of pinion gears 28 are driven to rotate synchronously. During the rotation of the four groups of pinion gears 28, the four groups of hemispherical combination plates 31 are separated, the sputum discharge tube 27 is opened, and the sputum flows along the inner wall of the sputum discharge tube 27. Flows into the bottom of the sputum drainage tube 27; in the process of pulling the piston 17 outward, the liquid extraction barrier ball 12 moves along the bell tube 8 due to the change in gas pressure, so that the bell tube 8 is separated from the liquid extraction barrier ball 12, and the sputum flows along the bell tube 8 to the sputum collecting tube 9; when the spring on the limit plate 21 pulls the piston 17 to move toward the bell tube 8, the air between the piston 17 and the liquid extraction barrier ball 12 is discharged from the sputum collecting tube 9 through the exhaust pressure-stabilizing tube 15, so that the air pressure in the sputum collecting tube 9 is lower than the air pressure in the throat, or the air pressure in the sputum collecting tube 9 is equal to the air pressure in the throat.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An ICU nursing sputum suction device, Features: The invention comprises an oral cavity opening device (1), a back neck support device (2) and a mechanical sputum suction structure (3), wherein the oral cavity opening device (1) is placed in the oral cavity of a patient, the back neck support device (2) contacts the back neck of the patient, the mechanical sputum suction structure (3) is fixedly connected to the oral cavity opening device (1) via a bracket, and the back neck support device (2) and the mechanical sputum suction structure (3) are fixedly connected via a bracket; the mechanical sputum suction structure (3) comprises a sputum suction gun housing structure (4), a sputum suction structure (5) and an anti-backflow rotation closing structure (6), the outer wall of the sputum suction gun housing structure (4) is fixedly connected to the oral cavity opening device (1) via a bracket, the sputum suction structure (5) is snap-fitted and installed in the sputum suction gun housing structure (4), the anti-backflow rotation closing structure (6) is connected to the sputum suction structure (5), and the anti-backflow rotation closing structure (6) is snap-fitted and installed in the sputum suction gun housing structure (4).

2. An ICU nursing sputum suction device according to claim 1, Features: The sputum suction gun housing structure (4) comprises a front suction tube (7), a trumpet tube (8) and a sputum collection tube (9); the sputum collection tube (9) is fixedly connected to the rear neck support device (2) via a bracket; the trumpet tube (8) is fixedly mounted on the sputum collection tube (9); and the front suction tube (7) is fixedly mounted on the trumpet tube (8); a thread is provided on the inner wall of the front suction tube (7), and a truncated cone-shaped groove is provided on the bottom wall of the sputum collection tube (9).

3. An ICU nursing sputum suction device according to claim 2, Features: The sputum suction structure (5) comprises a one-way tube adjustment device (10) and a pulling transmission structure (11), wherein the one-way tube adjustment device (10) is fixedly mounted on the trumpet tube (8), and the pulling transmission structure (11) is snap-fitted and mounted in the sputum collection tube (9); the one-way tube adjustment device (10) comprises a liquid extraction blocking ball (12), a partition plate (13), a liquid penetration groove (14), an exhaust pressure stabilizing tube (15), and an exhaust blocking ball (16), wherein the liquid extraction blocking ball (12) is snap-fitted and slidably disposed on the trumpet tube. (8), the partition plate (13) is fixedly mounted on the inner wall of the bell tube (8), and the liquid extraction barrier ball (12) is connected to the partition plate (13) by a spring, the liquid penetration groove (14) is fixedly arranged on the partition plate (13), the exhaust pressure stabilizing tube (15) is fixedly arranged on the side wall of the bell tube (8), the exhaust barrier ball (16) is slidably arranged in the exhaust pressure stabilizing tube (15), and the exhaust barrier ball (16) is connected to the inner wall of the exhaust pressure stabilizing tube (15) by a spring.

4. An ICU nursing sputum suction device according to claim 3, Features: The pulling transmission structure (11) comprises a piston (17), a rack (18), a pull rod (19), a gear (20), and a limit plate (21); the piston (17) is engaged and slid along the inner wall of the sputum collection tube (9); the gear (20) is engaged and rotatably mounted on the inner wall of the sputum collection tube (9); the rack (18) is fixedly mounted on the piston (17); the pull rod (19) is fixedly connected to the rack (18); the gear (20) is meshingly connected to the rack (18); the limit plate (21) is fixedly mounted on the pull rod (19); and the limit plate (21) is connected to the sputum collection tube (9) via a spring; a groove is provided on the inner wall of the sputum collection tube (9); and blocks are provided on the rack (18) and the limit plate (21), respectively.

5. An ICU nursing sputum suction device according to claim 4, Features: The anti-backflow rotary closed structure (6) comprises a bevel gear 1 (22), a bevel gear 2 (23), a transmission gear (24), a chain (25) and a rotary closed structure (26); the bevel gear 1 (22) is fixedly connected to the gear (20) via a bracket; the bevel gear 2 (23) is rotatably mounted in the sputum collection tube (9); the bevel gear 1 (22) is meshedly connected to the bevel gear 2 (23); the transmission gear (24) is connected to the center of the bevel gear 2 (23) via the bracket; the chain (25) is meshedly connected to the transmission gear (24); and the rotary closed structure (26) is connected to the chain (25).

6. An ICU nursing sputum suction device according to claim 5, Features: The rotary closed structure (26) comprises a sputum drainage pipe (27), a pinion (28), a toothed ring (29), a concentric connecting rod (30), and a hemispherical combination plate (31). The sputum drainage pipe (27) is connected to a truncated cone-shaped groove on the side wall of the sputum collection pipe (9). The pinion (28) is mounted on the inner wall of the sputum drainage pipe (27) in a snap-fitting and rotatable manner. The toothed ring (29) is mounted on the inner wall of the sputum drainage pipe (27) in a snap-fitting and rotatable manner. The pinion (28) is meshingly connected with the toothed ring (29). The concentric connecting rod (30) is fixedly arranged on the center of the pinion (28). The hemispherical combination plate (31) is fixedly mounted on the concentric connecting rod (30), and the pinion (28) is meshingly connected with the toothed ring (29). The pinion (28) is provided in four groups, the hemispherical combination plate (31) is provided in four groups, and the chain (25) is meshingly connected with the pinion (28).

7. An ICU nursing sputum suction device according to claim 6, Features: The rear neck supporting device (2) is configured as an air bag.

8. An ICU nursing sputum suction device according to claim 7, Features: The oral opening device (1) comprises an outer lip arc plate (32), a tooth support plate (33), an inner lip arc plate (34), an outer lip arc plate (35), a tooth support plate (36), an inner lip arc plate (37), a screw (38), a nut (39), a screw limit plate (40), a motor (41), and a front end connecting plate (42); the front end connecting plate (42) is connected to the back neck supporting device (2) via a bracket; the motor (41) is fixedly mounted on the front end connecting plate (42); the screw limit plate (40) is fixedly mounted on the outer wall of the motor (41); the screw (38) is connected to the back neck supporting device (2) via a bracket; The tooth support plate (36) is connected to the motor (41), the nut (39) is engaged and slid along the screw rod (38), the lip outer arc plate (2) (35) is fixedly mounted on the outer wall of the nut (39), one side of the tooth support plate (36) is connected to the lip outer arc plate (2) (35), the lip inner arc plate (2) (37) is fixedly mounted on the other side of the tooth support plate (36), the lip outer arc plate (1) (32) is engaged and rotatably connected to the screw rod (38), one side of the tooth support plate (1) (33) is fixedly connected to the lip outer arc plate (1) (32), and the lip inner arc plate (1) (34) is fixedly connected to the other side of the tooth support plate (1) (33).

9. An ICU nursing sputum suction device according to claim 8, Features: The top wall of the screw rod limiting plate (40) is provided with a scale, the length of the lip outer arc plate 1 (32) is greater than the length of the lip inner arc plate 1 (34), the length of the lip outer arc plate 2 (35) is greater than the length of the lip inner arc plate 2 (37), and the tooth support plate 1 (33) and the tooth support plate 2 (36) are both configured as arc structures.

10. An ICU nursing sputum suction device according to claim 9, Features: The front suction pipe (7) is provided with a hose (43) connected by a thread, and the front end of the hose (43) is designed to be rounded.

Images