Sputum suction device for nursing

Abstract

The invention relates to the technical field of sputum suction nursing, in particular to a sputum suction device for nursing, which comprises a negative pressure device and a collecting bottle, the top of the collecting bottle is provided with a first connector and a second connector, the negative pressure device is communicated with the first connector through an air suction pipe, the second connector is fixedly connected with a sputum suction pipe, and the sputum suction pipe is fixedly connected with the collecting bottle. The sputum suction tube is composed of an outer sputum suction tube body and an inner sputum suction tube body, and a sealing device is arranged between the outer sputum suction tube body and the inner sputum suction tube body. Water in the water storage tank enters the sputum suction inner tube, the whole sputum suction tube is rinsed under the action of negative pressure, the wettability of the inner wall of the sputum suction tube is increased, when sputum enters the sputum suction inner tube through the one-way valve, the sputum is diluted by the water, the viscosity is reduced, the sputum suction efficiency is improved, and the cleaning strength of a follow-up device is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sputum suction nursing, and more specifically to a sputum suction device for nursing. Background Art

[0002] The suction device is a medical device that is mainly used to help patients smoothly suck out the secretions in the airway, so as to keep the airway unobstructed. The suction device mainly works on the principle of negative pressure. When the power is turned on or the pedal is pressed, the vacuum pump or air pump inside the device starts to work, generating negative pressure. At this time, the suction tube is inserted into the patient's airway, and the negative pressure will suck the secretions in the airway into the suction tube, and then be collected and processed through the liquid storage bottle and other devices.

[0003] In the Chinese patent with the patent publication number CN118121783A, a closed sputum suction device is disclosed, including: a sputum suction tube, the end close to the patient's trachea is the first end, the end away from the patient's trachea is the second end, the first end of the sputum suction tube enters the patient's trachea, and the second end of the sputum suction tube is connected to a negative pressure source; an outer sleeve, which is sleeved outside the sputum suction tube, and the outer sleeve wraps part of the sputum suction tube; a driving mechanism, which is connected to the second end of the sputum suction tube, and the driving mechanism drives the first end of the sputum suction tube to move toward the patient's trachea, so that the first end of the sputum suction tube extends out of the outer sleeve to enter the patient's trachea; a closed film, which is sleeved outside the outer sleeve, used to wrap the outer sleeve and the sputum suction tube, and the closed film is sealed and connected to the outer sleeve. The linear motor drives the sputum suction tube to enter the patient's trachea, and medical staff no longer need to manually push the sputum suction tube into the patient's trachea, saving labor and ensuring that patients who need sputum suction can receive timely sputum suction treatment.

[0004] The above technical solution has the following defects: when the suction tube enters the patient's trachea, the patient needs to open his mouth wide, causing soreness in the facial muscles, and because the entry of foreign matter will produce a rejection reaction, the patient will unconsciously want to close his mouth or even accidentally bite the suction tube, preventing the normal operation of the suction device. In addition, sputum is viscous and easily adheres to the inner wall of the suction tube during the suction process. The sputum adhered to the inner wall of the suction tube cannot be processed during the automatic tube feeding and suction process, resulting in reduced suction efficiency and increased intensity of cleaning work after the suction is completed. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sputum suction device for nursing to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a sputum suction device for nursing, comprising a negative pressure device and a collecting bottle, wherein a first interface and a second interface are arranged on the top of the collecting bottle, wherein the negative pressure device is connected to the first interface through a suction tube, wherein the second interface is fixedly connected to the sputum suction tube, wherein the sputum suction tube consists of an outer sputum suction tube and an inner sputum suction tube, wherein a sealing device is arranged between the outer sputum suction tube and the inner sputum suction tube, wherein a telescopic device and a rinsing and diluting device are arranged inside the sealing device, and wherein an end of the inner sputum suction tube away from the outer sputum suction tube is slidably connected to a bite device.

[0007] Furthermore, one end of the sputum suction outer tube is connected to the second interface, and the other end of the sputum suction outer tube is slidably connected to the sputum suction inner tube, a first limiting ring is fixedly connected to the inner wall of one end of the sputum suction outer tube close to the sputum suction inner tube, and a second limiting ring is fixedly connected to the outer wall of one end of the sputum suction inner tube close to the sputum suction outer tube, an annular connecting plate is sleeved on the sputum suction inner tube, the annular connecting plate is slidably connected to the inner wall of the sealing device, a threaded hole is arranged on the annular connecting plate, and a one-way valve is arranged at one end of the sputum suction inner tube close to the biting device, and the one-way valve only allows liquid to move to one end of the sputum suction outer tube.

[0008] Furthermore, the upper part of the sealing device is fixedly connected to the outer wall of the sputum suction outer tube, and the bottom of the sealing device is provided with an annular sealing member, and the annular sealing member is slidably connected to the sputum suction inner tube.

[0009] Furthermore, the bite device includes a moving block, a moving through hole is opened on the moving block, an LED light is arranged on the side of the moving block away from the sputum suction outer tube, two grooves are arranged inside the moving block, an adjustment device is arranged inside the groove, a lower bite component is fixedly connected to the bottom of the moving block, an adjustment top plate is rotatably connected to the top of the moving block via a rotating shaft, and an upper bite component is fixedly connected to the top of the adjustment top plate.

[0010] Furthermore, the lower bite component includes a lower connecting member, which is fixedly connected to the lower articulator, and a lower bite groove is provided at the bottom of the lower articulator. The upper bite component includes an upper connecting member, which is fixedly connected to the upper articulator, and an upper bite groove is provided at the top of the upper articulator. The lower bite component and the upper bite component are made of transparent material.

[0011] Furthermore, the adjusting device includes a small motor and a fixed shaft fixedly connected to the inside of the groove, the driving end of the small motor is drivingly connected to the driving shaft, the outer shaft of the driving shaft is sleeved with a first gear, the fixed shaft is rotatably connected with an annular sliding member, the annular sliding member is fixedly connected to an annular connecting member along the axial direction of the first gear, the annular connecting member is fixedly connected to the second gear, the second gear and the first gear are meshingly connected, the annular sliding member is fixedly connected to a first connecting plate perpendicular to the axial direction of the first gear, the first connecting plate is fixedly connected to the slider, a sliding groove is provided at the bottom of the adjusting top plate, the slider can slide in the sliding groove, and a folding plate and an arc-shaped telescopic plate are arranged between the adjusting top plate and the moving block.

[0012] Furthermore, the telescopic device includes a stepper motor, which is installed on the inner wall of the sealing device close to the outer suction tube. The driving end of the stepper motor is drivingly connected to a threaded shaft, and the threaded shaft is threadedly connected to the threaded hole.

[0013] Furthermore, the rinse and dilution device is arranged on the side of the annular connecting plate away from the telescopic device, and the rinse and dilution device includes a water tank. A plurality of air holes are opened on the side of the water tank away from the annular connecting plate. A sealing slide is slidably connected to the inside of the water tank. The water tank is fixedly connected to a water inlet pipe, and the water inlet pipe passes through the annular connecting plate and the sealing device to enter the outside. A closing plug is detachably installed on the other end of the water inlet pipe, and water outlet pipes are fixedly connected on both sides of the water tank.

[0014] Furthermore, the other end of the water outlet pipe is fixedly connected with a bent pipe, the bent pipe is inclined upward relative to the moving block, a water inlet is provided on the sputum suction inner tube, and the bent pipe is communicated with the water inlet.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a telescopic device and a rinsing and diluting device, which is conducive to realizing automatic delivery and discharge of the sputum suction inner tube. At the same time, through the change of the air pressure in the sealing device, the water in the water storage tank enters the sputum suction inner tube, and the sputum suction tube is rinsed as a whole under the action of negative pressure, thereby increasing the wettability of the inner wall of the sputum suction tube. When sputum enters the sputum suction inner tube through the one-way valve, the sputum is diluted by water, the viscosity is reduced, the efficiency of sputum suction is improved, and the cleaning intensity of subsequent devices is greatly reduced.

[0017] 2. The present invention is provided with a bite device, which is conducive to adjusting and fixing the patient's mouth. The lower bite component and the upper bite component provide support for the patient's mouth, reduce the soreness of the facial muscles, and prevent the patient from closing his mouth and biting the suction tube. During adjustment, the folding plate and the arc-shaped telescopic plate extend and fold to prevent the internal adjustment device of the moving block from contacting the patient's mouth, and medical staff can clearly see the situation of the patient's tracheal suction through the transparent lower bite component and the upper bite component and the illumination of the LED light. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure at B in FIG.

[0021] Figure 4 It is a schematic diagram of the structure of the bite device of the present invention;

[0022] Figure 5 is a cross-sectional view of the structure of the bite device of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the regulating device of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the telescopic device of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the rinse and dilution device of the present invention;

[0026] Fig. 9 It is a cross-sectional view of the structure of the rinse and dilution device of the present invention;

[0027] Fig.10 for Figure 1 A schematic diagram of the enlarged structure in FIG.

[0028] The accompanying drawings are marked as follows: 1. negative pressure device; 101. suction tube; 2. collection bottle; 201. first interface; 202. second interface; 3. sputum suction tube; 301. sputum suction outer tube; 3011. first limiting ring; 302. sputum suction inner tube; 3021. second limiting ring; 3022. annular connecting plate; 3023. threaded hole; 3024. water inlet; 4. sealing device; 401. annular sealing member; 5. bite device; 501. moving block; 5011. moving through hole; 5012. LED lamp; 5013. groove; 5014. adjusting top plate; 50141. slide groove; 50142. folding plate; 50143. arc-shaped telescopic plate; 502. lower bite assembly; 5021. lower connecting member; 502 2. Lower articulator; 5023. Lower articulating groove; 503. Upper articulating assembly; 5031. Upper connecting piece; 5032. Upper articulator; 5033. Upper articulating groove; 504. Adjusting device; 5041. Small motor; 5042. Driving shaft; 5043. First gear; 5044. Fixed shaft; 5045. Annular sliding piece; 5046. Annular connecting piece; 5047. Second gear; 5048. First connecting plate; 5049. Sliding block; 6. Telescopic device; 601. Stepping motor; 602. Threaded shaft; 7. Rinse and dilute device; 701. Water storage tank; 702. Air hole; 703. Sealing slide plate; 704. Water outlet pipe; 7041. Bend pipe; 705. Water inlet pipe; 7051. Closing plug. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The nursing suction device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0030] Reference Figure 1-Figure 3 The present invention provides a sputum suction device for nursing, comprising a negative pressure device 1 and a collecting bottle 2, wherein a first interface 201 and a second interface 202 are arranged on the top of the collecting bottle 2, the negative pressure device 1 is connected to the first interface 201 through an air suction pipe 101, and the second interface 202 is fixedly connected to a sputum suction tube 3, the sputum suction tube 3 is composed of an outer sputum suction tube 301 and an inner sputum suction tube 302, a sealing device 4 is arranged between the outer sputum suction tube 301 and the inner sputum suction tube 302, a telescopic device 6 and a rinsing and diluting device 7 are arranged inside the sealing device 4, and an end of the inner sputum suction tube 302 away from the outer sputum suction tube 301 is slidably connected to a bite device 5;

[0031] In this embodiment, it should be specifically explained that: the telescopic device 6 can drive the inner suction tube 302 to slide inside the outer suction tube 301, so that the inner suction tube 302 enters the patient's trachea or comes out of the patient's trachea, and when the telescopic device 6 drives the inner suction tube 302 to enter the patient's trachea, the space between the annular connecting plate 3022 and the sealing device 4 is compressed, and the gas enters the water tank 701 through the air hole 702, so that the liquid in the water tank 701 enters the suction tube 3 through the water outlet pipe 704, dilutes the sputum adhering to the inner wall of the suction tube 3, and is recovered into the collection bottle 2 together with the sputum under the action of negative pressure, and the bite device 5 can adjust the angle of the patient's mouth opening.

[0032] The main difference between this embodiment and the prior art is that this embodiment adopts a bite device 5, a telescopic device 6 and a rinse and dilute device 7. The bite device 5 is used to adjust the angle of the patient's mouth opening according to the actual situation, reduce the soreness caused by the facial muscles, and fix the angle of the patient's mouth opening to prevent the sputum suction tube 3 from being bitten. The telescopic device 6 is used to automatically send and discharge the tube, and in this process, the liquid in the rinse and dilute device 7 enters the sputum suction tube 3, rinses the sputum suction tube 3 and dilutes the sputum, and then recovers it together into the collection bottle 2 under the action of negative pressure. Specifically, it is the adjustment device 504, the telescopic device 6 and the rinse and dilute device 7;

[0033] The above structure is the main structure of this embodiment, which solves the problem that when the suction tube 3 enters the patient's trachea, the patient needs to open his mouth wide, which causes soreness in the facial muscles. Since the entry of foreign matter will cause a rejection reaction, the patient will unconsciously want to close his mouth or even accidentally bite the suction tube 3, thereby preventing the normal operation of the suction device. In addition, sputum is viscous and easily adheres to the inner wall of the suction tube 3 during the suction process. The sputum adhered to the inner wall of the suction tube 3 cannot be processed during the automatic tube feeding and suction process, resulting in reduced suction efficiency and increased intensity of cleaning work after the suction is completed.

[0034] Reference Figure 3 and Figure 7 One end of the sputum suction outer tube 301 is connected to the second interface 202, and the other end of the sputum suction outer tube 301 is slidably connected to the sputum suction inner tube 302, a first limiting ring 3011 is fixedly connected to the inner wall of one end of the sputum suction outer tube 301 close to the sputum suction inner tube 302, and a second limiting ring 3021 is fixedly connected to the outer wall of the sputum suction inner tube 302 close to the sputum suction outer tube 301, an annular connecting plate 3022 is sleeved on the sputum suction inner tube 302, the annular connecting plate 3022 is slidably connected to the inner wall of the sealing device 4, a threaded hole 3023 is provided on the annular connecting plate 3022, and a one-way valve is provided at one end of the sputum suction inner tube 302 close to the bite device 5, and the one-way valve only allows liquid to move to one end of the sputum suction outer tube 301.

[0035] In this embodiment, it should be specifically explained that: when the inner suction tube 302 slides relative to the outer suction tube 301, the first limiting ring 3011 and the second limiting ring 3021 ensure that the outer suction tube 301 and the inner suction tube 302 will not be separated from each other. Since the annular connecting plate 3022 is slidably connected to the inner wall of the sealing device 4, when the annular connecting plate 3022 moves in the sealing device 4, the air pressure in the area between the bottom of the annular connecting plate 3022 and the sealing device 4 will change accordingly.

[0036] Reference Figure 3 The top of the sealing device 4 is fixedly connected to the outer wall of the sputum suction outer tube 301 , and the bottom of the sealing device 4 is provided with an annular sealing member 401 , and the annular sealing member 401 is slidably connected to the sputum suction inner tube 302 .

[0037] In this embodiment, it is necessary to specifically explain that: when the inner suction tube 302 moves, it slides between the outer suction tube 301 and the sealing device 4; the inner suction tube 302 slides inside the outer suction tube 301 through the second limiting ring 3021 and does not separate from the outer suction tube 301; the inner suction tube 302 slides inside the sealing device 4 through the annular connecting plate 3022 and changes the air pressure in the bottom space of the annular connecting plate 3022; the inner suction tube 302 slides inside the annular seal 401 through its own outer wall to ensure the sealing of the sealing device 4.

[0038] Reference Figure 4-Figure 5 The bite device 5 includes a moving block 501, a moving through hole 5011 is provided on the moving block 501, an LED light 5012 is provided on the side of the moving block 501 away from the sputum suction outer tube 301, two grooves 5013 are provided inside the moving block 501, and an adjustment device 504 is provided inside the groove 5013. A lower bite assembly 502 is fixedly connected to the bottom of the moving block 501, and the lower bite assembly 502 includes a lower connecting piece 5021, and the lower connecting piece 5021 is fixedly connected to a lower articulator 5022. A lower biting groove 5023 is provided at the bottom of the lower articulator 5022, and the top of the movable block 501 is rotatably connected to the adjusting top plate 5014 through a rotating shaft. The top of the adjusting top plate 5014 is fixedly connected to the upper biting component 503, and the upper biting component 503 includes an upper connecting piece 5031, which is fixedly connected to the upper articulator 5032. An upper biting groove 5033 is provided on the top of the upper articulator 5032. The lower biting component 502 and the upper biting component 503 are made of transparent material.

[0039] In this embodiment, it is necessary to specifically explain that: the upper and lower teeth of the patient are fixed in the upper bite groove 5033 and the lower bite groove 5023 respectively, and then the adjustment device 504 is started according to the actual situation of the patient, and the angles of the adjustment top plate 5014, the upper bite component 503 and the upper bite groove 5033 are adjusted and fixed, and the lower bite component 502 and the upper bite component 503 provide support for the patient's mouth, reduce the soreness of the facial muscles, and prevent the patient from closing his mouth and biting the suction tube 3. Since the lower bite component 502 and the upper bite component 503 are made of transparent material, and the LED light 5012 illuminates the patient's tracheal suction area, it is convenient for medical staff to check the suction situation.

[0040] Reference Figure 4-Figure 6 The adjusting device 504 includes a small motor 5041 and a fixed shaft 5044 fixedly connected to the inside of the groove 5013. The driving end of the small motor 5041 is drivingly connected to the driving shaft 5042. The outer shaft of the driving shaft 5042 is sleeved with a first gear 5043. The fixed shaft 5044 is rotatably connected to an annular sliding member 5045. The annular sliding member 5045 is fixedly connected to an annular connecting member 5046 along the axial direction of the first gear 5043. The annular connecting member 5046 is fixedly connected to the second gear 504 7. The second gear 5047 is meshingly connected with the first gear 5043. The annular sliding member 5045 is fixedly connected with a connecting plate first connecting plate 5048 in a vertical direction of the axial direction of the first gear 5043. The connecting plate first connecting plate 5048 is fixedly connected with a sliding block 5049. A sliding groove 50141 is provided at the bottom of the adjusting top plate 5014. The sliding block 5049 can slide inside the sliding groove 50141. A folding plate 50142 and an arc-shaped telescopic plate 50143 are provided between the adjusting top plate 5014 and the moving block 501.

[0041] In this embodiment, it is necessary to specifically explain that: when the angle of the upper engaging assembly 503 is adjusted, the small motor 5041 is started, and the small motor 5041 drives the first gear 5043 to rotate through the driving shaft 5042. Due to the meshing rotation between the second gear 5047 and the first gear 5043, the second gear 5047 is driven to rotate around the fixed shaft 5044. The rotation of the second gear 5047 is linked by the annular connecting member 5046, the annular sliding member 5045 and the connecting plate first connecting plate 5048, so that the sliding plate 5046 is moved to the left and right sides of the sliding plate 5048. 049 slides inside the slide groove 50141. When the slider 5049 slides inside the slide groove 50141 toward the upper bite component 503, the angle of the upper bite component 503 increases. When the slider 5049 slides inside the slide groove 50141 in a direction away from the upper bite component 503, the angle of the upper bite component 503 decreases. When the angle of the upper bite component 503 changes, the folding plate 50142 and the arc-shaped telescopic plate 50143 are driven to extend and fold, thereby preventing the internal adjustment device 504 of the moving block 501 from contacting the patient's mouth.

[0042] Reference Figure 7 The telescopic device 6 includes a stepper motor 601, which is installed on the inner wall of the sealing device 4 close to the suction outer tube 301. The driving end of the stepper motor 601 is drivingly connected to a threaded shaft 602, and the threaded shaft 602 is threadedly connected to the threaded hole 3023.

[0043] In this embodiment, it is necessary to specifically explain that: when the tube is automatically delivered and discharged, the stepper motor 601 is started, and the stepper motor 601 drives the threaded shaft 602 to rotate. Due to the rotation of the thread between the threaded shaft 602 and the threaded hole 3023, the annular connecting plate 3022 is controlled to move back and forth along the axial direction of the threaded shaft 602, thereby driving the mutual sliding between the suction inner tube 302 and the suction outer tube 301 and the sealing device 4, thereby realizing the automatic delivery and discharge of the suction inner tube 302.

[0044] Reference Figure 8-Figure 10 The rinse and dilution device 7 is arranged on the side of the annular connecting plate 3022 away from the telescopic device 6. The rinse and dilution device 7 includes a water tank 701. A plurality of air holes 702 are opened on the side of the water tank 701 away from the annular connecting plate 3022. A sealing slide plate 703 is slidably connected inside the water tank 701. The water tank 701 is fixedly connected to a water inlet pipe 705. The water inlet pipe 705 passes through the annular connecting plate 3022 and the sealing device 4 to enter the outside. A closing plug 7051 is detachably installed on the other end of the water inlet pipe 705. Water outlet pipes 704 are fixedly connected on both sides of the water tank 701. A curved pipe 7041 is fixedly connected to the other end of the water outlet pipe 704. The curved pipe 7041 is inclined upward relative to the moving block 501. A water inlet 3024 is arranged on the suction inner tube 302, and the curved pipe 7041 is communicated with the water inlet 3024.

[0045] In this embodiment, it is necessary to specifically explain that: the water inlet pipe 705 is used to input water from the outside into the water storage tank 701, and the sealing slide plate 703 will move to the bottom to block the air hole 702 under the action of the gravity of the water. With the start of the sputum suction work, the sputum suction inner tube 302 moves, and the air pressure in the area between the bottom of the annular connecting plate 3022 and the sealing device 4 increases, and the gas enters the water storage tank 701 through the air hole 702. The air hole 702 moves upward, and the water in the water storage tank 701 reaches the water inlet 3024 through the water outlet pipe 704. The tube 7041 and the water inlet 3024 are both tilted upward relative to the moving block 501 to prevent the sputum from entering the water tank 701 through the outlet pipe 704 when the sputum is sucked. When the tube delivery operation starts, the water in the water tank 701 will enter the sputum suction inner tube 302 before the sputum. Under the action of negative pressure, the sputum suction tube 3 is first rinsed as a whole to increase the wettability of the inner wall of the sputum suction tube 3. When the sputum enters the sputum suction inner tube 302, the water dilutes the sputum and finally enters the collection bottle 2 through the sputum suction outer tube 301.

[0046] Working principle of the present invention:

[0047] The main problem solved by this embodiment is that when the suction tube 3 enters the patient's trachea, the patient needs to open his mouth wide, causing soreness in the facial muscles, and because the entry of foreign matter will produce a rejection reaction, the patient will unconsciously want to close his mouth or even accidentally bite the suction tube 3, preventing the normal operation of the suction device. In addition, the sputum is viscous and easily adheres to the inner wall of the suction tube 3 during the suction process. The sputum adhered to the inner wall of the suction tube 3 cannot be processed during the automatic tube feeding and suction process, resulting in reduced suction efficiency and increased intensity of cleaning work after the suction is completed.

[0048] The specific steps are as follows:

[0049] The preparation work before suctioning sputum is to first adjust and fix the bite device 5, the patient opens his mouth, and the medical staff turns on the LED light 5012 on the moving block 501, and then fix the patient's upper and lower teeth in the upper bite groove 5033 and the lower bite groove 5023 respectively, and start the adjustment device 504, and the small motor 5041 drives the first gear 5043 to rotate through the driving shaft 5042, and the meshing rotation between the second gear 5047 and the first gear 5043 drives the second gear 5047 to rotate around the fixed shaft 5044, and the rotation of the second gear 5047 is linked by the annular connecting member 5046, the annular sliding member 5045 and the connecting plate first connecting plate 5048, so that the slider 5049 slides inside the slide groove 50141, and when the slider 5049 slides in the slide groove 50141 toward the upper bite component 503, the upper bite component 5 03 angle increases until the situation of the patient's tracheal suction site can be clearly seen through the transparent lower bite component 502 and the upper bite component 503 and the illumination of the LED lamp 5012, thereby completing the adjustment and fixation of the bite device 5, reducing the soreness of the patient's facial muscles, and preventing the patient from closing his mouth and biting the suction tube 3. During the adjustment and fixation of the bite device 5, the folding plate 50142 and the arc-shaped telescopic plate 50143 at the bottom of the top plate 5014 are adjusted to stretch and fold to prevent the internal adjustment device 504 of the moving block 501 from contacting the patient's oral cavity and causing contamination. On the other hand, the closing plug 7051 is opened to transport water to the water tank 701 through the water inlet pipe 705 for moistening the inner wall of the suction tube 3 and diluting the sputum. After the transportation is completed, the closing plug 7051 is closed, and the sealing slide plate 703 moves to the bottom to block the air hole 702 under the action of the gravity of the water.

[0050] When suctioning, the negative pressure device 1 is turned on to generate negative pressure in the suction tube 3, and the stepper motor 601 is started. The stepper motor 601 drives the threaded shaft 602 to rotate. Due to the rotation of the thread between the threaded shaft 602 and the threaded hole 3023, the annular connecting plate 3022 is controlled to move back and forth along the axial direction of the threaded shaft 602, driving the mutual sliding between the suction inner tube 302, the suction outer tube 301 and the sealing device 4. The other end of the suction inner tube 302 slides inside the movable through hole 5011 to realize the automatic delivery and discharge of the suction inner tube 302. At the same time as the delivery operation starts, the suction inner tube 302 and the annular connecting plate 3022 move downward in the sealing device 4, so that the air pressure in the area between the bottom of the annular connecting plate 3022 and the sealing device 4 increases, and the gas passes through the air hole 7 02 enters the water tank 701, the air hole 702 moves upward, and the water in the water tank 701 reaches the water inlet 3024 through the water outlet pipe 704. The bent pipe 7041 and the water inlet 3024 are both inclined upward relative to the moving block 501 to prevent the sputum from entering the water tank 701 through the water outlet pipe 704 when sucking the sputum. The water in the water tank 701 will enter the sputum suction inner tube 302 before the sputum. Under the action of negative pressure, the sputum suction tube 3 is first rinsed as a whole to increase the wettability of the inner wall of the sputum suction tube 3. When the sputum enters the sputum suction inner tube 302 through the one-way valve, the sputum is diluted after meeting the water, and the viscosity of the sputum is reduced. Finally, the sputum passes through the sputum suction outer tube 301 together and enters the collecting bottle 2 to complete the suction of the sputum, thereby improving the efficiency of sputum suction and greatly reducing the cleaning intensity of the subsequent device.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A nursing sputum suction device, comprising a negative pressure device (1) and a collecting bottle (2), characterized in that: The top of the collecting bottle (2) is provided with a first interface (201) and a second interface (202); the negative pressure device (1) is connected to the first interface (201) via an air suction tube (101); the second interface (202) is fixedly connected to a sputum suction tube (3); the sputum suction tube (3) is composed of an outer sputum suction tube (301) and an inner sputum suction tube (302); a sealing device (4) is provided between the outer sputum suction tube (301) and the inner sputum suction tube (302); a telescopic device (6) and a rinsing and diluting device (7) are provided inside the sealing device (4); and a bite device (5) is slidably connected to the end of the inner sputum suction tube (302) away from the outer sputum suction tube (301); The telescopic device (6) comprises a stepper motor (601), and the stepper motor (601) is mounted on the inner wall of the sealing device (4) close to the sputum suction outer tube (301). The driving end of the stepper motor (601) is drivingly connected to a threaded shaft (602), and the threaded shaft (602) is threadedly connected to the threaded hole (3023).

2. A nursing sputum suction device according to claim 1, characterized in that: One end of the sputum suction outer tube (301) is connected to the second interface (202), and the other end of the sputum suction outer tube (301) is slidably connected to the sputum suction inner tube (302). A first limiting ring (3011) is fixedly connected to the inner wall of one end of the sputum suction outer tube (301) close to the sputum suction inner tube (302), and a second limiting ring (3021) is fixedly connected to the outer wall of one end of the sputum suction inner tube (302) close to the sputum suction outer tube (301). An annular connecting plate (3022) is sleeved on the sputum suction inner tube (302), and the annular connecting plate (3022) is slidably connected to the inner wall of the sealing device (4). A threaded hole (3023) is provided on the annular connecting plate (3022). A one-way valve is provided at one end of the sputum suction inner tube (302) close to the biting device (5), and the one-way valve only allows liquid to move toward one end of the sputum suction outer tube (301).

3. A nursing sputum suction device according to claim 1, characterized in that: The upper part of the sealing device (4) is fixedly connected to the outer wall of the sputum suction outer tube (301), and the bottom of the sealing device (4) is provided with an annular sealing member (401), and the annular sealing member (401) is slidably connected to the sputum suction inner tube (302).

4. A nursing sputum suction device according to claim 1, characterized in that: The bite device (5) comprises a moving block (501), a moving through hole (5011) is provided on the moving block (501), an LED light (5012) is provided on the side of the moving block (501) away from the sputum suction outer tube (301), two grooves (5013) are provided inside the moving block (501), an adjustment device (504) is provided inside the groove (5013), a lower bite component (502) is fixedly connected to the bottom of the moving block (501), an adjustment top plate (5014) is rotatably connected to the top of the moving block (501) via a rotating shaft, and an upper bite component (503) is fixedly connected to the top of the adjustment top plate (5014).

5. A nursing sputum suction device according to claim 4, characterized in that: The lower bite component (502) includes a lower connecting member (5021), which is fixedly connected to a lower articulator (5022), and a lower bite groove (5023) is provided at the bottom of the lower articulator (5022). The upper bite component (503) includes an upper connecting member (5031), which is fixedly connected to an upper articulator (5032), and an upper bite groove (5033) is provided at the top of the upper articulator (5032). The lower bite component (502) and the upper bite component (503) are made of transparent material.

6. A nursing sputum suction device according to claim 4, characterized in that: The adjusting device (504) comprises a small motor (5041) and a fixed shaft (5044) fixedly connected to the inside of the groove (5013); the driving end of the small motor (5041) is drivingly connected to the driving shaft (5042); the outer shaft of the driving shaft (5042) is sleeved with a first gear (5043); an annular sliding member (5045) is rotatably connected to the fixed shaft (5044); the annular sliding member (5045) is fixedly connected to an annular connecting member (5046) along the axial direction of the first gear (5043); the annular connecting member (5046) is fixedly connected to the second gear (5043); 047), the second gear (5047) and the first gear (5043) are meshingly connected, the annular sliding member (5045) is fixedly connected with a first connecting plate (5048) perpendicular to the axial direction of the first gear (5043), the first connecting plate (5048) is fixedly connected with a sliding block (5049), a sliding groove (50141) is provided at the bottom of the adjusting top plate (5014), the sliding block (5049) can slide inside the sliding groove (50141), and a folding plate (50142) and an arc-shaped telescopic plate (50143) are provided between the adjusting top plate (5014) and the moving block (501).

7. A nursing sputum suction device according to claim 1, characterized in that: The rinse and dilution device (7) is arranged on the side of the annular connecting plate (3022) away from the telescopic device (6), and the rinse and dilution device (7) comprises a water storage tank (701). A plurality of air holes (702) are provided on the side of the water storage tank (701) away from the annular connecting plate (3022). A sealing slide plate (703) is slidably connected inside the water storage tank (701). The water storage tank (701) is fixedly connected to a water inlet pipe (705), and the water inlet pipe (705) passes through the annular connecting plate (3022) and the sealing device (4) to enter the outside. A closing plug (7051) is detachably installed on the other end of the water inlet pipe (705), and water outlet pipes (704) are fixedly connected to both sides of the water storage tank (701).

8. A nursing sputum suction device according to claim 7, characterized in that: The other end of the water outlet pipe (704) is fixedly connected to a curved pipe (7041), and the curved pipe (7041) is inclined upward relative to the moving block (501). A water inlet (3024) is provided on the sputum suction inner tube (302), and the curved pipe (7041) is connected to the water inlet (3024).

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