A portable sputum suction device applied to critical illness and a use method thereof

Abstract

The application discloses a kind of portable sputum suction device applied to critical illness and use method, belong to medical instrument technical field, including case, liquid storage mechanism, negative pressure mechanism, valve pipe connecting piece replacement mechanism and waste collection box, the liquid storage mechanism, negative pressure mechanism, valve pipe connecting piece replacement mechanism and waste collection box are all located in the case inside;The liquid storage mechanism includes the liquid storage bottle being located in the case and the first connecting pipe being communicated with the liquid storage bottle;The negative pressure mechanism includes the negative pressure pump being located in the case and the second connecting pipe being communicated with the negative pressure pump;The valve pipe connecting piece replacement mechanism includes feeding mechanism, pushing mechanism and material moving mechanism;The application is directly replaced by whole to transverse valve pipe and mouthpiece, so that transverse valve pipe and mouthpiece are no longer left secretion, facilitate medical staff to install new sputum suction tube while not prone to infection, reduce the occurrence of complications of critical patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a portable suction device for critical care and its usage method. Background Technology

[0002] A suction device is a medical device that uses a suction tube inserted into the mouth or nose to remove secretions from the respiratory tract using negative pressure, thereby keeping the airway clear and preventing certain diseases and complications.

[0003] For critically ill patients, post-operative patients, and patients who are weak and unable to cough up phlegm, medical staff generally need to clear sputum from the patient's airway every few hours. During the use of a suction device, after suctioning sputum from the patient's mouth, the suction tube needs to be replaced. The suction tube is removed from the nozzle of the horizontal valve tube, and a new suction tube is installed on the nozzle to suction sputum from the patient's nasal cavity. Since secretions remain in the nozzle and horizontal valve tube during the suction process, the secretions remaining at the nozzle affect the installation of a new suction tube by medical staff. During the replacement of the suction tube, the secretions remaining in the horizontal valve tube can easily cause infection and complications in critically ill patients. Therefore, it is necessary to design a portable suction device for critical care and a method of use. Summary of the Invention

[0004] The purpose of this invention is to provide a portable suction device for critical care and a method of using it, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a portable suction device for critical care, comprising a housing, a liquid storage mechanism, a negative pressure mechanism, a valve tube connector replacement mechanism, and a waste collection box, wherein the liquid storage mechanism, the negative pressure mechanism, the valve tube connector replacement mechanism, and the waste collection box are all located inside the housing;

[0006] The liquid storage mechanism includes a liquid storage bottle disposed inside the chassis and a first connecting pipe communicating with the liquid storage bottle;

[0007] The negative pressure mechanism includes a negative pressure pump installed inside the chassis and a second pipe connected to the negative pressure pump;

[0008] The valve pipe connector replacement mechanism includes a feeding mechanism, a pushing mechanism, and a transferring mechanism;

[0009] The feeding mechanism includes a vertical frame, a lifting cylinder located at the lower part of the vertical frame, a push plate connected to the output end of the lifting cylinder, and a plurality of valve tube connectors placed on the top of the push plate and slidingly engaged with the vertical frame in the vertical direction. Each valve tube connector includes an outer frame, a transverse valve tube located within the outer frame, a nozzle located on the transverse valve tube, a clamping block located on the transverse valve tube, and a hook located on the top of the outer frame. The nozzle is detachably connected to an external disposable suction tube. The transverse valve tube is provided with a first insertion tube and a second insertion tube that cooperate with the first and second connecting tubes.

[0010] The material pushing mechanism is installed on the inner wall of the chassis and located on one side of the top of the vertical frame;

[0011] The material transfer mechanism includes a sliding column located diagonally above the vertical frame and a transverse cylinder installed on the inner wall of the chassis. The sliding column is a cantilever structure with one end fixed to the inner wall of the chassis. The waste collection box is located directly below the free end of the sliding column and on the side of the vertical frame away from the fixed end of the sliding column.

[0012] The pushing mechanism is used to horizontally push the valve pipe connector, which has been moved to the uppermost part of the vertical frame, to the bottom of the slide column, so that the hook on the valve pipe connector is hooked on the slide column. A discharge hole is also provided on the side of the machine box adjacent to the first and second connecting pipes. A limiting spring-back mechanism is also provided on the inner wall of the machine box near the discharge hole. The transverse cylinder is used to push the valve pipe connector toward the discharge hole along the extension direction of the slide column, so that the connector on the valve pipe connector extends out of the discharge hole, and the first and second inserts are respectively inserted and connected to the first and second connecting pipes. The limiting spring-back mechanism is used to limit the clamping block so that the valve pipe connector is kept in the working position. When the valve pipe connector needs to be replaced after use, the limiting spring-back mechanism no longer limits the clamping block. Under the elastic force of the limiting spring-back mechanism, the valve pipe connector moves along the extension direction of the slide column toward the free end of the slide column and falls into the waste collection box.

[0013] In a further embodiment, the limiting spring mechanism includes two return springs disposed on the inner wall of the machine housing and adjacent to the discharge hole. A pressure block is fixed to the end of the return spring, and the pressing block cooperates with the pressure block. A limiting cylinder is provided below the return spring, and the output end of the limiting cylinder is connected to the limiting plate.

[0014] When the valve pipe connector is needed, the valve pipe connector at the top of the vertical frame moves toward the discharge hole, the nozzle extends out of the discharge hole, the clamping block on the horizontal valve pipe moves toward the pressure block and squeezes the pressure block, the pressure block squeezes the return spring, and the limiting cylinder drives the limiting plate to extend and limit the clamping block adjacent to the limiting plate;

[0015] When the valve pipe connector needs to be replaced after use, the limiting cylinder drives the limiting plate to retract, the reset spring returns, and the pressure block pushes the transverse valve pipe to move.

[0016] In a further embodiment, the pushing mechanism includes a side plate on one side of the upper part of the vertical frame, a pushing cylinder on the side of the side plate facing the vertical frame, the output end of the pushing cylinder being connected to the pushing plate, a pin being fixed on the pushing plate, and a socket being provided on the outer frame to cooperate with the pin.

[0017] In a further embodiment, a position identification device is also provided above the vertical frame. The position identification device is electrically connected to the lifting cylinder. When the valve pipe connector contacts the position identification device, the lifting cylinder stops working.

[0018] In a further embodiment, the bottom of the chassis is provided with a support plate, the support plate is provided with a pusher, and the bottom of the support plate is provided with casters.

[0019] In a further embodiment, the chassis is equipped with an ultraviolet lamp.

[0020] In a further embodiment, the free end of the slide column is provided with a bend, and the transverse cylinder is located below the slide column and away from the bend.

[0021] A method for using a portable suction device for critical care includes the following steps:

[0022] S1. When suctioning is required, after the medical staff moves the machine to the designated position, the lifting cylinder drives the push plate to move up, causing several valve pipe connectors to move up. After the valve pipe connector at the top of the vertical frame moves to the designated height, the pushing mechanism pushes the valve pipe connector horizontally to the bottom of the sliding column and causes the hook on the valve pipe connector to be hung on the sliding column.

[0023] S2. The transverse cylinder pushes the valve tube connector to slide in the extension direction of the slide column, so that the valve tube connector at the top of the vertical frame moves toward the discharge hole, the nozzle extends out of the discharge hole, at this time the first insertion tube is inserted into the first connecting tube, the second insertion tube is inserted into the second connecting tube, the liquid storage bottle and the negative pressure pump are connected to the valve tube connector, after the nozzle extends a specified length, the limiting spring-back mechanism limits the clamping block so that the valve tube connector is kept in the working position, and then the output end of the transverse cylinder returns to the initial position;

[0024] S3. Medical staff connect the external disposable suction tube to the nozzle extending from the discharge port, start the negative pressure pump, and suck the secretions in the patient's mouth and nasal cavity into the storage bottle through the suction tube;

[0025] S4. When it is necessary to replace the valve tube connector, the medical staff pulls out the suction tube. The limiting spring-back mechanism no longer limits the clamping block. Under the elastic force of the limiting spring-back mechanism, the valve tube connector moves along the extension direction of the sliding column to the free end of the sliding column and falls into the waste collection box. Repeat the above steps.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: After the medical staff moves the machine to the designated position, the lifting cylinder drives the push plate to move up, causing several valve tube connectors to move upward. After the valve tube connector at the top of the vertical frame moves to the designated height, the pushing cylinder pushes the pushing plate to move, thereby pushing the valve tube connector horizontally to the bottom of the sliding column and causing the hook on the valve tube connector to be hooked on the sliding column. The transverse cylinder pushes the valve tube connector to slide in the extension direction of the sliding column, causing the valve tube connector at the top of the vertical frame to move towards the discharge hole. The connector moves out of the discharge hole, at which time the first insertion tube is inserted into the first connecting tube, and the second insertion tube is inserted into the second connecting tube. The liquid storage bottle and the negative pressure pump are connected to the valve tube connector. The pressing block on the transverse valve tube moves towards the pressure block and squeezes the pressure block. The pressure block squeezes the return spring. After the connector extends to the designated length, the limiting cylinder drives the limiting plate to extend, limiting the pressure block adjacent to the limiting plate. The output end of the transverse cylinder returns to its initial position. Medical staff connect the external disposable suction tube to the nozzle extending from the discharge port, start the negative pressure pump, and suction secretions from the patient's mouth and nasal cavity into the storage bottle through the suction tube. When the valve tube connector needs to be replaced, the medical staff pulls out the suction tube, the limit cylinder drives the limit plate to retract, the reset spring returns, and the pressure block pushes the pressure block, causing the valve tube connector to move along the extension direction of the slide column towards the free end of the slide column under the action of elastic force and fall into the waste collection box. When the weight sensor in the waste collection box detects an increase in the weight in the waste collection box, that is, the discarded valve tube connector falls into the waste collection box, the waste recycling ends and the machine enters the standby state. By directly replacing the transverse valve tube and nozzle as a whole, no secretions remain in the transverse valve tube and nozzle, which makes it convenient for medical staff to install new suction tubes while reducing the risk of infection and reducing the occurrence of complications in critically ill patients. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is an overall sectional view of the present invention;

[0029] Figure 3 yes Figure 2 Overall rear view;

[0030] Figure 4 This is a schematic diagram of the connector protruding state of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the transverse cylinder output end returning to the initial position according to the present invention;

[0032] Figure 6 This is a schematic diagram of the valve pipe connector of the present invention in the state of being moved above the waste collection box;

[0033] Figure 7 This is a top view of the sliding column of the present invention;

[0034] The attached diagram is labeled as follows: 1. Chassis; 2. Liquid storage bottle; 3. First connecting pipe; 4. Sliding column; 5. Negative pressure pump; 6. Second connecting pipe; 7. Vertical frame; 8. Lifting cylinder; 9. Push plate; 10. Outer frame; 11. Horizontal valve pipe; 12. Connector; 13. First insertion pipe; 14. Second insertion pipe; 15. Hook; 16. Horizontal movement cylinder; 17. Insertion hole; 18. Insertion post; 19. Ultraviolet lamp; 20. Side plate; 21. Pushing cylinder; 22. Pushing plate; 23. Discharge hole; 24. Reset spring; 25. Pressure block; 26. Limiting cylinder; 27. Limiting plate; 28. Waste collection box; 29. ​​Bearing plate; 30. Moving wheel; 31. Push frame. Detailed Implementation

[0035] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0036] Please see Figures 1-7 The present invention provides a technical solution: a portable suction device for critical care, comprising a housing 1, a liquid storage mechanism, a negative pressure mechanism, a valve tube connector replacement mechanism, and a waste collection box 28, wherein the liquid storage mechanism, the negative pressure mechanism, the valve tube connector replacement mechanism, and the waste collection box 28 are all located inside the housing 1;

[0037] The liquid storage mechanism includes a liquid storage bottle 2 housed in the casing 1 and a first connecting pipe 3 connected to the liquid storage bottle 2;

[0038] The negative pressure mechanism includes a negative pressure pump 5 housed in the casing 1 and a second connecting pipe 6 connected to the negative pressure pump 5;

[0039] The valve pipe connector replacement mechanism includes a feeding mechanism, a pushing mechanism, and a transferring mechanism;

[0040] The feeding mechanism includes a vertical frame 7, a lifting cylinder 8 located at the lower part of the vertical frame 7, a push plate 9 connected to the output end of the lifting cylinder 8, and several valve pipe connectors placed on the top of the push plate 9 and slidingly engaged with the vertical frame 7 in the vertical direction. The valve pipe connectors include an outer frame 10, a transverse valve pipe 11 located inside the outer frame 10, a nozzle 12 located on the transverse valve pipe 11, a clamping block located on the transverse valve pipe 11, and a hook 15 located on the top of the outer frame 10. The nozzle 12 is detachably connected to an external disposable suction tube. The transverse valve pipe 11 is provided with a first insertion tube 13 and a second insertion tube 14 that cooperate with the first connecting tube 3 and the second connecting tube 6.

[0041] The material pushing mechanism is installed on the inner wall of the casing 1 and located on one side of the top of the vertical frame 7;

[0042] The material transfer mechanism includes a sliding column 4 located diagonally above the vertical frame 7 and a transverse cylinder 16 installed on the inner wall of the housing 1. The sliding column 4 is a cantilever structure with one end fixed to the inner wall of the housing 1. The waste collection box 28 is located directly below the free end of the sliding column 4 and on the side of the vertical frame 7 away from the fixed end of the sliding column 4.

[0043] The pushing mechanism is used to push the valve pipe connector, which has been moved to the top of the vertical frame 7, horizontally to the bottom of the slide column 4 and so that the hook 15 on the valve pipe connector is hung on the slide column 4. The side of the machine box 1 adjacent to the first pipe 3 and the second pipe 6 is also provided with a discharge hole 23. The inner wall of the machine box 1 and adjacent to the discharge hole 23 is also provided with a limit spring mechanism. The transverse cylinder 16 is used to push the valve pipe connector toward the discharge hole 23 along the extension direction of the slide column 4, so that the connector 12 on the valve pipe connector extends out of the discharge hole 23. At the same time, the first insertion tube 13 and the second insertion tube 14 are respectively inserted and connected to the first pipe 3 and the second pipe 6. The limit spring mechanism is used to limit the clamping block so that the valve pipe connector is kept in the working position. When the valve pipe connector needs to be replaced after use, the limit spring mechanism no longer limits the clamping block. Under the elastic force of the limit spring mechanism, the valve pipe connector moves along the extension direction of the slide column 4 toward the free end of the slide column 4 and falls into the waste collection box 28.

[0044] The waste collection box 28 is equipped with a weight sensor. When the weight sensor in the waste collection box 28 detects an increase in the weight inside the waste collection box 28, that is, when the discarded valve pipe connector falls into the waste collection box 28, the waste recycling ends and the chassis 1 enters the standby state.

[0045] The chassis 1 is equipped with a controller, which has a nozzle extension start button, a suction start button and a waste recycling start button. The controller is electrically connected to the lifting cylinder 8, the position recognition device, the pushing cylinder 21, the negative pressure pump 5, the limit cylinder 26, the weight sensor and the ultraviolet lamp 19.

[0046] The controller is also equipped with a material discharge start button. After all the valve pipe connectors in the machine box 1 have been used, press the material discharge start button, and the controller will control the lifting cylinder 8 to drive the push plate 9 to move down, so that medical staff can place several valve pipe connectors on the top of the push plate 9.

[0047] In a further embodiment, the limiting spring-back mechanism includes two return springs 24 located on the inner wall of the housing 1 and near the discharge hole 23. The end of the return spring 24 is fixed with a pressure block 25, and the pressing block cooperates with the pressure block 25. A limiting cylinder 26 is provided below the return spring 24, and the output end of the limiting cylinder 26 is connected to the limiting plate 27.

[0048] When the valve pipe connector is needed, the valve pipe connector at the top of the vertical frame 7 moves toward the discharge hole 23, the connector 12 extends out of the discharge hole 23, the abutment block on the horizontal valve pipe 11 moves toward the pressure block 25 and squeezes the pressure block 25, the pressure block 25 squeezes the return spring 24, the limit cylinder 26 drives the limit plate 27 to extend, and limits the abutment block adjacent to the limit plate 27;

[0049] When the valve pipe connector needs to be replaced after use, the limit cylinder 26 drives the limit plate 27 to retract, the reset spring 24 returns to its original position, and the pressure block 25 pushes the transverse valve pipe 11 to move.

[0050] The above technical solution facilitates the limiting and rebounding of the valve tube connector during suctioning operations and the rebounding of the valve tube connector during replacement. The limiting cylinder 26 is located below the lower reset spring 24. During the limiting process of the limiting plate 27 limiting the adjacent pressure block 25, the upward force borne by the valve tube connector is dispersed by the sliding column 4, so that the valve tube connector is stable.

[0051] In a further embodiment, the pushing mechanism includes a side plate 20 on one side of the upper part of the vertical frame 7. A pushing cylinder 21 is provided on the side of the side plate 20 facing the vertical frame 7. The output end of the pushing cylinder 21 is connected to the pushing plate 22. A plug post 18 is fixed on the pushing plate 22. An insertion hole 17 that cooperates with the plug post 18 is provided on the outer frame 10.

[0052] Through the above technical solution, the pusher cylinder 21 pushes the pusher plate 22 to move, so that the insert 18 extends into the insertion hole 17 of the adjacent valve pipe connector, thereby pushing the valve pipe connector to move below the slide column 4. This facilitates hanging and ensures that the replaced valve pipe connector and the newly fed valve pipe connector are no longer on the same straight line, reducing the contamination of the new valve pipe connector.

[0053] In a further embodiment, a position identification device is also provided above the vertical frame 7. The position identification device is electrically connected to the lifting cylinder 8. When the valve pipe connector contacts the position identification device, the lifting cylinder 8 stops working.

[0054] With the above technical solution, a mounting plate is provided on one side of the sliding column 4, and the position recognition device is located at the bottom of the mounting plate and above the vertical frame 7. When the lifting cylinder 8 drives the push plate 9 to move upward, the top of the valve pipe connector at the top of the vertical frame 7 contacts the position recognition device. The position recognition device transmits a signal to the lifting cylinder 8, at which point the lifting cylinder 8 stops working, which facilitates the subsequent hanging of the valve pipe connector and the replacement of the next valve pipe connector. The position recognition device can be a pressure sensor. When the pressure sensor senses pressure, the lifting cylinder 8 stops working.

[0055] In a further embodiment, the chassis 1 is equipped with an ultraviolet lamp 19.

[0056] The above technical solution facilitates ultraviolet disinfection of the machine casing 1 by setting up ultraviolet lamps. The waste collection box 28 can be filled with disinfectant to facilitate the disinfection of valve pipe connections after replacement. The machine casing 1 is equipped with a door to facilitate the removal and cleaning of the liquid storage bottle 2 and the waste collection box 28.

[0057] In a further embodiment, the bottom of the chassis 1 is provided with a support plate 29, a pusher 31 is provided on the support plate 29, and a moving wheel 30 is provided at the bottom of the support plate 29.

[0058] The above technical solution facilitates the overall movement of the suction device by using the push frame 31 in conjunction with the moving wheels 30, making it easy to carry.

[0059] In a further embodiment, the free end of the slide column 4 is provided with a bend, and the transverse cylinder 16 is located below the slide column 4 and away from the bend.

[0060] The above technical solution allows the valve pipe connector to move from the free end of the slide column 4 and fall into the waste collection box 28 by means of the bend, and at the same time, the valve pipe connector will not hit the transverse cylinder 16 during the falling process.

[0061] In a further embodiment, the hook 15 includes a retaining ring on which a spring buckle is mounted.

[0062] With the above technical solution, when the hook 15 moves toward the slide post 4, the baffle at the opening of the spring buckle is compressed, so that the slide post 4 enters the hanging hole of the spring buckle. Then the baffle returns, so that the hook 15 can move stably on the slide post 4.

[0063] A method for using a portable suction device for critical care includes the following steps:

[0064] S1. When suctioning is required, medical staff move the machine 1 to the designated position. The lifting cylinder 8 drives the push plate 9 to move up, causing several valve pipe connectors to move up. After the valve pipe connector at the top of the vertical frame 7 moves to the designated height, the pushing mechanism pushes the valve pipe connector horizontally to the bottom of the slide column 4 and causes the hook 15 on the valve pipe connector to be hung on the slide column 4.

[0065] S2. The transverse cylinder 16 pushes the valve tube connector to slide in the extension direction of the slide column 4, so that the valve tube connector at the top of the vertical frame 7 moves toward the discharge hole 23, the nozzle 12 extends out of the discharge hole 23, at this time the first insertion tube 13 is inserted into the first connecting tube 3, the second insertion tube 14 is inserted into the second connecting tube 6, the liquid storage bottle 2 and the negative pressure pump 5 are connected to the above valve tube connector, after the nozzle 12 extends to the specified length, the limit spring-back mechanism limits the clamping block so that the valve tube connector is kept in the working position, and then the output end of the transverse cylinder 16 returns to the initial position;

[0066] S3. Medical staff connect the external disposable suction tube to the nozzle 12 extending from the discharge port 23, start the negative pressure pump 5, and suck the secretions in the patient's mouth and nasal cavity into the storage bottle 2 through the suction tube;

[0067] S4. When it is necessary to replace the valve tube connector, the medical staff will pull out the suction tube. The limit spring mechanism will no longer limit the clamping block. Under the elastic force of the limit spring mechanism, the valve tube connector will move along the extension direction of the slide column 4 to the free end of the slide column 4 and fall into the waste collection box 28. Repeat the above steps.

[0068] Working principle: During use, medical personnel move the machine casing 1 to the designated position and press the connector extension start button. After receiving the start signal, the controller controls the lifting cylinder 8 to move the push plate 9 upward, causing several valve pipe connectors to move upward. When the valve pipe connector at the top of the vertical frame 7 moves to the designated height, that is, when the top of the valve pipe connector at the top of the vertical frame 7 contacts the position identification device, the position identification device transmits a signal to the controller. The controller controls the lifting cylinder 8 to stop working and controls the drive pushing cylinder 21 to push the pushing plate 22 to move, thereby pushing the valve pipe connector horizontally to directly below the slide column 4, so that the hook 15 on the valve pipe connector is hooked on the slide column 4. Then, the controller controls the transverse cylinder 16 to push the valve pipe connector to slide in the extension direction of the slide column 4, so that... The valve tube connector at the top of the vertical frame 7 moves toward the discharge hole 23, and the nozzle 12 moves out of the discharge hole 23. At this time, the first insertion tube 13 is inserted into the first connecting tube 3, and the second insertion tube 14 is inserted into the second connecting tube 6. The liquid storage bottle 2 and the negative pressure pump 5 are connected to the valve tube connector. At this time, the pressing block on the horizontal valve tube 11 moves toward the pressure block 25 and squeezes the pressure block 25. The pressure block 25 squeezes the return spring 24. When the stroke of the horizontal movement cylinder 16 reaches the preset value, the nozzle 12 reaches the designated position. The controller controls the limit cylinder 26 to start. The limit cylinder 26 drives the limit plate 27 to extend and limit the pressing block adjacent to the limit plate 27. Then the controller controls the output end of the horizontal movement cylinder 16 to return to the initial position. At this time, the suction tube installation preparation is completed.

[0069] After connecting the external disposable suction tube to the nozzle 12 extending from the discharge port 23, the medical staff presses the suction start button. The controller controls the negative pressure pump 5 to start, and the secretions in the patient's mouth and nasal cavity are suctioned into the storage bottle 2 through the suction tube. When it is necessary to replace the valve tube connector, the medical staff pulls out the suction tube and presses the waste recycling start button. The controller controls the limit cylinder 26 to drive the limit plate 27 to retract. The reset spring 24 pushes the pressure block 25, so that the valve tube connector moves along the extension direction of the slide column 4 towards the free end of the slide column 4 under the action of elastic force and falls into the waste collection box 28. When the weight sensor in the waste collection box 28 detects an increase in the weight in the waste collection box 28, that is, when the discarded valve tube connector falls into the waste collection box 28, the waste recycling ends and the machine box 1 enters the standby state; repeat the above steps.

[0070] By directly replacing the entire transverse valve tube 11 and nozzle 12, no secretions remain inside the transverse valve tube 11 and nozzle 12. This makes it easier for medical staff to install new suction catheters while reducing the risk of infection and minimizing complications in critically ill patients.

[0071] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A portable suction device for critical care, characterized in that, It includes a chassis (1), a liquid storage mechanism, a negative pressure mechanism, a valve pipe connector replacement mechanism, and a waste collection box (28), wherein the liquid storage mechanism, the negative pressure mechanism, the valve pipe connector replacement mechanism, and the waste collection box (28) are all located inside the chassis (1); The liquid storage mechanism includes a liquid storage bottle (2) disposed in the housing (1) and a first connecting pipe (3) communicating with the liquid storage bottle (2); The negative pressure mechanism includes a negative pressure pump (5) installed in the chassis (1) and a second pipe (6) connected to the negative pressure pump (5); The valve pipe connector replacement mechanism includes a feeding mechanism, a pushing mechanism, and a transferring mechanism; The feeding mechanism includes a vertical frame (7), a lifting cylinder (8) located at the lower part of the vertical frame (7), a push plate (9) connected to the output end of the lifting cylinder (8), and a plurality of valve tube connectors placed on the top of the push plate (9) and slidingly engaged with the vertical frame (7) in the vertical direction. The valve tube connectors include an outer frame (10), a transverse valve tube (11) located in the outer frame (10), a nozzle (12) located on the transverse valve tube (11), a clamping block located on the transverse valve tube (11), and a hook (15) located on the top of the outer frame (10). The nozzle (12) is detachably connected to an external disposable suction tube. The transverse valve tube (11) is provided with a first insertion tube (13) and a second insertion tube (14) that cooperate with the first connecting tube (3) and the second connecting tube (6). The pushing mechanism is installed on the inner wall of the housing (1) and located on one side of the top of the vertical frame (7); The material transfer mechanism includes a sliding column (4) located diagonally above the vertical frame (7) and a transverse cylinder (16) installed on the inner wall of the housing (1). The sliding column (4) is a cantilever structure with one end fixed to the inner wall of the housing (1). The waste collection box (28) is located directly below the free end of the sliding column (4) and on the side of the vertical frame (7) away from the fixed end of the sliding column (4). The pushing mechanism is used to horizontally push the valve pipe connector, which has been moved to the uppermost part of the vertical frame (7), to the underside of the slide column (4) and to hook the hook (15) on the valve pipe connector onto the slide column (4). A discharge hole (23) is also provided on the side of the housing (1) adjacent to the first pipe (3) and the second pipe (6). A limiting spring-back mechanism is also provided on the inner wall of the housing (1) near the discharge hole (23). The transverse cylinder (16) is used to push the valve pipe connector toward the discharge hole (23) along the extension direction of the slide column (4), so that the... The nozzle (12) on the valve tube connector extends out of the discharge hole (23). At the same time, the first insertion tube (13) and the second insertion tube (14) are respectively connected to the first connecting pipe (3) and the second connecting pipe (6). The limiting spring-back mechanism is used to limit the clamping block so that the valve tube connector is kept in the working position. When the valve tube connector needs to be replaced after use, the limiting spring-back mechanism no longer limits the clamping block. Under the elastic force of the limiting spring-back mechanism, the valve tube connector moves along the extension direction of the sliding column (4) to the free end of the sliding column (4) and falls into the waste collection box (28).

2. The portable suction device for critical care as described in claim 1, characterized in that: The limiting spring mechanism includes two return springs (24) located on the inner wall of the housing (1) and near the discharge hole (23). The end of the return spring (24) is fixed with a pressure block (25). The pressing block cooperates with the pressure block (25). A limiting cylinder (26) is provided below the return spring (24). The output end of the limiting cylinder (26) is connected to the limiting plate (27). When the valve pipe connector is needed, the valve pipe connector at the top of the vertical frame (7) moves toward the discharge hole (23), the nozzle (12) extends out of the discharge hole (23), the abutment block on the horizontal valve pipe (11) moves toward the pressure block (25) and squeezes the pressure block (25), the pressure block (25) squeezes the return spring (24), the limiting cylinder (26) drives the limiting plate (27) to extend, and limits the abutment block adjacent to the limiting plate (27); When the valve pipe connector needs to be replaced after use, the limiting cylinder (26) drives the limiting plate (27) to retract, the reset spring (24) returns, and the pressure block (25) pushes the transverse valve pipe (11) to move.

3. A portable suction device for critical care as described in claim 1, characterized in that: The pushing mechanism includes a side plate (20) on one side of the upper part of the vertical frame (7). A pushing cylinder (21) is provided on the side of the side plate (20) facing the vertical frame (7). The output end of the pushing cylinder (21) is connected to the pushing plate (22). A plug (18) is fixed on the pushing plate (22). An insertion hole (17) that cooperates with the plug (18) is opened on the outer frame (10).

4. A portable suction device for critical care according to claim 1, characterized in that: A position identification device is also provided above the vertical frame (7). The position identification device is electrically connected to the lifting cylinder (8). When the valve pipe connector contacts the position identification device, the lifting cylinder (8) stops working.

5. A portable suction device for critical care according to claim 1, characterized in that: The bottom of the chassis (1) is provided with a support plate (29), the support plate (29) is provided with a pusher (31), and the bottom of the support plate (29) is provided with a moving wheel (30).

6. A portable suction device for critical care according to claim 1, characterized in that: The chassis (1) is equipped with an ultraviolet lamp (19).

7. A portable suction device for critical care according to claim 1, characterized in that: The free end of the slide column (4) is provided with a bend, and the transverse cylinder (16) is located below the slide column (4) and away from the bend.

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