Portable low negative pressure suction device

Abstract

The invention provides a portable low-negative-pressure suction device which comprises a shell, a suction head connected through a pipeline is arranged on the shell, an air extracting pump is arranged at the bottom of the shell, detachable storage shells are arranged on the two sides of the shell, the two sides of the shell communicate with the storage shells through a liquid outlet and an air inlet, a three-way pipe is arranged in the shell, and the three-way pipe is connected with the three-way pipe. One end of the three-way pipe is communicated with the suction head, the other two ends of the three-way pipe are communicated with the two sets of liquid outlets respectively, a mounting shaft is rotatably arranged in the shell, two sets of shielding assemblies are arranged on the mounting shaft, and driving mechanisms are arranged on the two sides of the shell; and the driving mechanism drives the mounting shaft to rotate to drive the shielding assembly to shield the corresponding liquid outlet and the corresponding air inlet when liquid in one group of storage shells reaches a fixed value. According to the device, automatic switching of a gas flow channel and a liquid flow channel can be achieved, medical staff only need to replace the storage shell within interval time, saliva is effectively prevented from overflowing from the storage shell after the storage shell is full, and meanwhile continuous suction can be achieved when the storage shell is replaced.

Description

Technical Field

[0001] The present invention particularly relates to a portable low-negative pressure suction device. Background Art

[0002] Endotracheal intubation or tracheotomy disrupts the normal physiological barrier and function of the patient's respiratory tract, preventing the normal excretion of respiratory secretions and saliva in the mouth. These secretions tend to accumulate in the subglottic area and oral cavity. If the accumulated secretions in the subglottic area are not cleared promptly, they can easily breed bacteria, leading to a series of serious complications.

[0003] At the same time, excessive accumulation of saliva may cause the patient to aspirate, resulting in choking, lung infection, etc., affecting the patient's respiratory function and recovery process. Therefore, a negative pressure suction device is needed to continuously absorb the saliva in the patient's mouth.

[0004] For example, the Chinese invention patent with publication number CN116421799A provides a subglottic suction device, which can adjust the negative pressure value in the sputum culture bottle to the negative pressure value required for subglottic suction as needed, and then connect the connecting tube to the suction tube on the air bag to perform subglottic suction operation. By separating the adjustment component and the locking mechanism, the adjustment component can be used to cover the air inlet again, making it convenient to switch between sputum suction operation and subglottic suction operation, without the need to adjust the negative pressure gauge, reducing the risk of causing respiratory mucosal damage and bleeding.

[0005] However, most existing devices for negative pressure suction of saliva in a patient's mouth use a single storage device to store saliva. When one storage device is full, it is impossible to automatically switch the flow direction of saliva to another storage device. Medical staff need to replace the storage device in time. If manual replacement is not timely, saliva will overflow from the storage device or suction will stop.

[0006] In view of this, a convenient low-negative-pressure suction device is proposed to solve the above problems. Summary of the Invention

[0007] In response to the shortcomings of the existing technology, the present invention proposes a portable low-negative pressure suction device to solve the technical problem that most of the existing devices for negative pressure suction of saliva in the patient's mouth proposed in the above background technology store saliva through a single storage device, and cannot automatically switch the flow direction of saliva to another storage device after one group of storage devices is full. Medical staff need to replace the storage device in time. If the manual replacement is not timely, it will cause saliva to overflow from the storage device or stop suction.

[0008] To achieve the above objectives, the present invention provides the following technical solutions: a portable low-negative-pressure suction device, comprising:

[0009] A housing, wherein a suction head connected by a pipeline is provided on the housing, an air pump is provided at the bottom, and detachable storage shells are provided on both sides of the housing, and both sides of the housing are connected to the storage shells through a liquid outlet and an air inlet;

[0010] A three-way pipe is provided in the housing, one end of the three-way pipe is connected to the suction head, and the other two ends are respectively connected to the two groups of liquid outlets;

[0011] A mounting shaft rotatably disposed within the housing along its axis, wherein two sets of shielding components are disposed on the mounting shaft; and

[0012] The driving mechanism is provided with two groups and is located on both sides of the shell, so as to drive the installation shaft to rotate and drive the shielding assembly to shield the corresponding liquid outlet and air inlet when the liquid in one group of the storage shells reaches a fixed value.

[0013] In a preferred embodiment, the shielding assembly includes:

[0014] Two groups of liquid baffles are provided and are respectively connected to the mounting shaft;

[0015] Two groups of air baffles are provided and are respectively located below the two groups of liquid baffles, so that when one group of liquid baffles blocks the liquid outlet, the corresponding group of air baffles blocks the air inlet; and

[0016] The driving plate is arranged between the two groups of air baffles and is connected to the driving mechanism.

[0017] In a preferred embodiment, the driving mechanism includes:

[0018] A mounting rod, with mounting plates provided on both sides of the housing, and the mounting rod slidably passing through the mounting plates along its axis;

[0019] A connecting rod is provided at the bottom of the mounting rod, and a buoyancy ball is provided at the bottom of the connecting rod; and

[0020] A connecting shaft is arranged in the housing. A tension spring is arranged on the connecting shaft. An end of the tension spring is connected to the middle of the driving plate to control the driving plate to always tilt.

[0021] In a preferred embodiment, a threaded column is provided at the bottom of the mounting rod, and the connecting rod is screwed onto the threaded column.

[0022] In a preferred embodiment, sliding grooves are provided on both sides of the shell, and a clamping frame is provided on the storage shell, and the clamping frame is slidably clamped in the sliding grooves.

[0023] In a preferred embodiment, the end of the driving plate is further provided with a locking mechanism connected to one group of the storage shells, and when one group of the liquid baffles blocks the liquid outlet, the locking mechanism releases the fixation of the storage shell on that side and fixes the storage shell on the other side.

[0024] In a preferred embodiment, the locking mechanism includes:

[0025] A locking shaft is provided with a locking block connected to a connecting rod, and protrusions are provided at both ends of the locking block. A first through slot is provided on the shell, and a clamping slot is provided on one side of the storage shell. The protrusion at one end of the locking block passes through the first through slot and is clamped in the clamping slot; and

[0026] The transmission assembly is arranged on the driving plate to convert the rotation of the driving plate into driving the locking shaft to rotate.

[0027] In a preferred embodiment, the transmission assembly includes:

[0028] a driving column, disposed at an end of the driving plate; and

[0029] The sliding frame is arranged on the locking shaft, and the driving column is slidably clamped in the sliding frame.

[0030] In a preferred embodiment, second through grooves for the movement of the liquid baffle plate are provided on both sides of the shell, and the air baffle plate can also block the second through grooves. Third through grooves flush with the end faces of the second through grooves are also provided on both sides of the shell, and a sealing plate is slidingly provided in the third through groove, and the end of the sealing plate abuts against the liquid baffle plate.

[0031] In a preferred embodiment, buzzers are provided on both sides of the shell, abutment blocks are provided at the ends of the sealing plate, a baffle is provided inside the shell, a switch electrically connected to the buzzer is provided at the bottom of the baffle, and the abutment block abuts against the switch after the sealing plate rises.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] When the device is in use, in the initial state, under the action of the driving mechanism, the shielding component blocks one group of liquid outlets and air inlets, and the other group of liquid outlets and air inlets cooperate with the shell and the three-way pipe to form a passage. The suction head can be placed in the patient's mouth, and by starting the vacuum pump, the gas in the storage shell enters the shell from the air inlet and is discharged to the outside, so that negative pressure is formed in the storage shell, and the saliva in the mouth can be sucked out through the suction head, avoiding saliva accumulation in the patient's mouth, keeping the respiratory tract unobstructed, and avoiding complications such as aspiration pneumonia. When the liquid in one group of storage shells reaches a certain amount, the driving mechanism can be used to drive the installation shaft to rotate. The rotation of the installation shaft drives the two groups of shielding components to move during the rotation, so that one group of shielding components blocks the liquid outlet and air inlet in the passage, and exposes the other group of liquid outlet and air inlet. The liquid can then enter the other group of storage shells through the other group of liquid outlets, realizing automatic switching of gas and liquid flow paths. Medical staff can replace the storage shells within the interval time, effectively preventing saliva from overflowing from the storage shells after the storage shells are full. At the same time, uninterrupted suction can be performed when the storage shells are replaced, thereby improving the convenience during treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0035] Figure 1 A schematic diagram of the three-dimensional structure of a portable low-negative pressure suction device provided by the present invention;

[0036] Figure 2 This is a cross-sectional view of a portable low-negative pressure suction device of the present invention;

[0037] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle;

[0038] Figure 4 for Figure 2 A magnified schematic diagram of area B in the middle;

[0039] Figure 5 for Figure 2 Enlarged schematic diagram of the middle C area;

[0040] Figure 6 This is a schematic structural diagram of a shell in a portable low-negative pressure suction device of the present invention;

[0041] Figure 7 This is a structural schematic diagram of a sealing plate in a portable low-negative pressure suction device of the present invention;

[0042] Figure 8This is a schematic structural diagram of the mounting shaft and the parts above it in a portable low-negative-pressure suction device of the present invention;

[0043] Figure 9 This is a schematic structural diagram of a storage shell in a portable low-negative pressure suction device of the present invention;

[0044] Reference numerals:

[0045] 1. Shell; 2. T-tube; 3. Liquid outlet; 4. First slot; 5. Air inlet; 6. Second slot; 7. Slide; 8. Third slot; 9. Buzzer; 10. Mounting plate; 11. Mounting shaft; 12. Liquid baffle; 13. Drive plate; 14. Connecting shaft; 15. Tension spring; 16. Air baffle; 17. Drive column; 18. Locking shaft; 19. Slide frame; 20. Locking block; 21. Storage shell; 22. Snap-on frame; 23. Slot; 24. Suction head; 25. Vacuum pump; 26. Mounting rod; 27. Threaded column; 28. Buoyancy ball; 29. Connecting rod; 30. Sealing plate; 31. Abutment block; 32. Baffle; 33. Switch. DETAILED DESCRIPTION

[0046] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0047] Example:

[0048] like Figure 1 、 2 As shown in Figure 6, the present invention provides a portable low-negative pressure suction device, including a shell 1, a suction head 24 connected by a pipeline is provided on the shell 1, an air pump 25 is provided at the bottom, and a detachable storage shell 21 is provided on both sides of the shell 1. Both sides of the shell 1 are connected with the storage shell 21 through the liquid outlet 3 and the air inlet 5. A three-way pipe 2 is provided in the shell 1, one end of the three-way pipe 2 is connected with the suction head 24, and the other two ends are connected with the two groups of liquid outlets 3 respectively. A rotatable mounting shaft 11 is also provided in the shell 1, and two groups of shielding components are provided on the mounting shaft 11. The shielding components include two groups of liquid baffles 12 and air baffles 16 arranged on the mounting shaft 11. The two groups of air baffles 16 are respectively located below the two groups of liquid baffles 12. When one group of liquid baffles 12 blocks the liquid outlet 3, the corresponding group of air baffles 16 blocks the air inlet 5.

[0049] In the initial state, one group of liquid baffles 12 blocks one group of liquid outlets 3, and the other group of liquid outlets 3 is in an open state; one group of air baffles 16 blocks one group of air inlets 5, and the other group of air inlets 5 is in an open state. At this time, the suction head 24, the three-way pipe 2, one group of storage shells 21, the interior of the shell 1 and the vacuum pump 25 form an independent and sealed passage, and the vacuum pump 25 can be used to extract the gas inside the storage shell 21 to form a negative pressure, thereby sucking the liquid inside the patient's mouth into the storage shell 21 through the suction head 24.

[0050] like Figure 2 、 4 As shown in Figures 7 and 8, in this embodiment, a drive mechanism is provided on both sides of the housing 1. When the liquid in one set of storage shells 21 reaches a predetermined value, the drive mechanism drives the mounting shaft 11 to rotate, driving the shielding assembly to shield the corresponding liquid outlet 3 and air inlet 5. A drive plate 13 connected to the drive mechanism is provided between the two sets of air baffles 16. The drive mechanism includes a mounting rod 26. Mounting plates 10 are provided on both sides of the housing 1. The mounting rod 26 is slidably inserted into the mounting plates 10 along its axis. A connecting rod 29 is provided at the bottom of the mounting rod 26, and a buoyancy ball 28 is provided at the bottom of the connecting rod 29. A connecting shaft 14 is provided in the housing 1. A tension spring 15 is provided on the connecting shaft 14. The end of the tension spring 15 is connected to the middle of the drive plate 13 to control the drive plate 13 to always tilt.

[0051] After saliva enters the storage shell 21, the rise of the liquid level can drive the buoyancy ball 28 to rise. At the same time, due to the high density of oral secretions, the mounting rod 26 can be lifted upward to contact the liquid baffle 12. As the liquid level rises, the upward force on the buoyancy ball 28 becomes greater, until the force on the liquid baffle 12 reaches a critical value, stretching the tension spring 15 and driving the mounting shaft 11 to rotate so that the tension spring 15 rotates. When the tension spring 15 rotates to a vertical state, due to its one side When the side is subjected to force, the liquid baffle 12 in the storage shell 21 of the group is driven by the tension of the tension spring 15 to block the corresponding group of liquid outlets 3, and at the same time, the air baffle 16 blocks the air inlet 5. The liquid outlet 3 and air inlet 5 corresponding to the storage shell 21 on the side not filled with saliva are exposed, forming an independent and sealed passage with the suction head 24, the three-way pipe 2, one group of storage shells 21, the interior of the housing 1 and the air pump 25, so that the saliva can be sucked into the other group of storage shells 21. In this way, the automatic switching of the storage shells 21 is realized, and there is no need for manual inspection to see whether the liquid in the storage shell 21 overflows.

[0052] like Figure 2As shown, in this embodiment, a threaded column 27 is provided at the bottom of the mounting rod 26, and a connecting rod 29 is screwed onto the threaded column 27. The distance between the top end of the mounting rod 26 and the bottom end of the buoyancy ball 28 can be adjusted by rotating the mounting rod 26, thereby facilitating adjustment of the lifting force of the connecting rod 29 according to the density of the patient's secretions to accommodate different patients.

[0053] like Figure 6 、 9 As shown, in this embodiment, both sides of the housing 1 are provided with a slide groove 7, and a clamping frame 22 is provided on the storage shell 21. The clamping frame 22 is slidably clamped in the slide groove 7. The storage shell 21 can be installed by sliding the clamping frame 22 into the slide groove 7. After installation, the storage shell 21 can maintain a sealed state with the housing 1 to prevent gas leakage from affecting the suction effect.

[0054] like Figure 2 、 5 As shown in Figures 6, 8, and 9, in this embodiment, the end of the drive plate 13 is further provided with a locking mechanism connected to one of the groups of storage shells 21. When one of the groups of liquid baffles 12 blocks the liquid outlet 3, the locking mechanism releases the fixation of the storage shell 21 on that side and fixes the storage shell 21 on the other side. The locking mechanism includes a locking shaft 18, on which a locking block 20 connected to a connecting rod is provided. Both ends of the locking block 20 are provided with protrusions. The housing 1 is provided with a first through-slot 4, and a slot 23 is provided on one side of the storage shell 21. The protrusion at one end of the locking block 20 passes through the first through-slot 4 and is retained in the slot 23. The drive plate 13 is provided with a transmission assembly, which can convert the rotation of the drive plate 13 into the rotation of the driving locking shaft 18. The transmission assembly includes a drive column 17 provided at the end of the drive plate 13, and a slide frame 19 is provided on the locking shaft 18. The drive column 17 is slidably retained in the slide frame 19.

[0055] After the storage shells 21 are installed, a group of storage shells 21 in the suction state are fixed in position by the cooperation of the locking block 20 and the card slot 23. When the liquid in the reorganized storage shell 21 reaches a certain value, the driving plate 13 rotates. During the rotation, the driving plate 13 drives the locking shaft 18 to rotate through the cooperation of the driving column 17 and the sliding frame 19, so that the locking block 20 is stuck in another group of card slots 23, and the fixation of the full group of storage shells 21 is released. The group of storage shells 21 can be disassembled and the liquid inside can be poured out, and the group of storage shells 21 being sucked can be prevented from falling, thereby improving the convenience of using the device.

[0056] like Figure 1 、 2As shown in Figures 3 and 7, in this embodiment, second through-slots 6 for the movement of the liquid baffle plate 12 are provided on both sides of the housing 1. The air baffle plate 16 can also block the second through-slot 6. Third through-slots 8 flush with the end faces of the second through-slot 6 are also provided on both sides of the housing 1. A sealing plate 30 is slidably mounted in the third through-slot 8, and the end of the sealing plate 30 abuts against the liquid baffle plate 12. Buzzers 9 are provided on both sides of the housing 1, and abutment blocks 31 are provided at the end of the sealing plate 30. A baffle 32 is provided in the housing 1, and a switch 33 electrically connected to the buzzer 9 is provided at the bottom of the baffle 32. When the sealing plate 30 rises, the abutment block 31 abuts against the switch 33.

[0057] In the non-suction state, the storage shell 21 is shielded from the second through slot 6 by the air baffle 16 on one side to prevent air leakage and improve the suction effect on the other side. In the suction state, the storage shell 21 is shielded from the second through slot 6 by the sealing plate 30 on one side. When the storage shell 21 is full, the sealing plate 30 can be pushed upward by the liquid baffle 12. The staff can know the suction status of the secretions according to the buzzer 9 and pour the liquid in the storage shell 21 in time. The buzzer 9 can be set to remind the patient to avoid long-term alarm and discomfort. It can be understood that the circuit control of the buzzer 9 is a conventional technology in this field and will not be repeated here.

[0058] Specific usage and beneficial effects of the present invention:

[0059] When the device is in use, in the initial state, under the action of the driving mechanism, the shielding component blocks one group of liquid outlets 3 and air inlets 5, and the other group of liquid outlets 3 and air inlets 5 cooperate with the shell 1 and the three-way pipe 2 to form a passage. The suction head 24 can be placed in the patient's mouth, and the air pump 25 is started to allow the gas in the storage shell 21 to enter the shell 1 from the air inlet 5 and be discharged to the outside, so that a negative pressure is formed in the storage shell 21, and the saliva in the mouth can be sucked out through the suction head 24, so as to avoid saliva accumulation in the patient's mouth, keep the respiratory tract unobstructed, and avoid complications such as aspiration pneumonia. When the liquid in one group of storage shells 21 reaches a certain amount, the driving mechanism can be used to drive the installation shaft 11 to rotate. The rotation of the installation shaft 11 drives the two groups of shielding components to move during the rotation, so that one group of shielding components blocks the liquid outlet 3 and the air inlet 5 in the passage, and exposes the other group of liquid outlet 3 and air inlet 5. The liquid can then enter the other group of storage shells 21 through the other group of liquid outlet 3, realizing automatic switching of gas and liquid flow channels. Medical staff can replace the storage shell 21 within the interval time, effectively preventing saliva from overflowing from the storage shell 21 after the storage shell 21 is full. At the same time, uninterrupted suction can be performed when the storage shell 21 is replaced, thereby improving the convenience during treatment.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above. Modifications and improvements may be made based on the present invention, as will be apparent to those skilled in the art. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to fall within the scope of protection claimed in the present invention.

Claims

1. A portable low-negative pressure suction device, characterized in that: Includes: A housing (1), wherein a suction head (24) connected via a pipeline is provided on the housing (1), an air pump (25) is provided at the bottom, and detachable storage shells (21) are provided on both sides of the housing (1), and both sides of the housing (1) are connected to the storage shells (21) via a liquid outlet (3) and an air inlet (5); A three-way pipe (2) is arranged in the housing (1), one end of the three-way pipe (2) is connected to the suction head (24), and the other two ends are respectively connected to the two groups of liquid outlets (3); A mounting shaft (11) is rotatably arranged along its axis in the housing (1), and two sets of shielding components are arranged on the mounting shaft (11); and The driving mechanism is provided in two groups and is located on both sides of the housing (1) so as to drive the installation shaft (11) to rotate and drive the shielding assembly to shield the corresponding liquid outlet (3) and air inlet (5) when the liquid in one group of the storage shells (21) reaches a fixed value.

2. A portable low-negative pressure suction device according to claim 1, characterized in that: The shielding component includes: Two groups of liquid baffles (12) are provided and are respectively connected to the mounting shaft (11); Two groups of air baffles (16) are provided and are respectively located below the two groups of liquid baffles (12), so that when one group of liquid baffles (12) blocks the liquid outlet (3), the corresponding group of air baffles (16) blocks the air inlet (5); and The driving plate (13) is arranged between the two groups of air baffle plates (16) and is connected to the driving mechanism.

3. A portable low-negative pressure suction device according to claim 2, characterized in that: The driving mechanism includes: A mounting rod (26), a mounting plate (10) is provided on both sides of the housing (1), and the mounting rod (26) is slidably mounted on the mounting plate (10) along its axis; A connecting rod (29) is provided at the bottom of the mounting rod (26), and a buoyancy ball (28) is provided at the bottom of the connecting rod (29); and A connecting shaft (14) is arranged in the housing (1), and a tension spring (15) is arranged on the connecting shaft (14). The end of the tension spring (15) is connected to the middle of the driving plate (13) to control the driving plate (13) to always tilt.

4. A portable low-negative-pressure suction device according to claim 3, characterized in that: A threaded column (27) is provided at the bottom of the installation rod (26), and the connecting rod (29) is screwed onto the threaded column (27).

5. The portable low-negative-pressure suction device according to claim 3, characterized in that: Slide grooves (7) are provided on both sides of the housing (1), and a clamping frame (22) is provided on the storage shell (21), and the clamping frame (22) is slidably clamped in the slide grooves (7).

6. A portable low-negative-pressure suction device according to claim 5, characterized in that: The end of the driving plate (13) is further provided with a locking mechanism connected to one of the groups of storage shells (21); when one of the groups of liquid blocking plates (12) blocks the liquid outlet (3), the locking mechanism releases the fixation of the storage shell (21) on that side and fixes the storage shell (21) on the other side.

7. A portable low-negative pressure suction device according to claim 6, characterized in that: The locking mechanism includes: A locking shaft (18) is provided with a locking block (20) connected to a connecting rod, both ends of the locking block (20) are provided with protrusions, a first through slot (4) is provided on the housing (1), a clamping slot (23) is provided on one side of the storage shell (21), and the protrusion at one end of the locking block (20) passes through the first through slot (4) and is clamped in the clamping slot (23); and A transmission assembly is provided on the driving plate (13) to convert the rotation of the driving plate (13) into driving the locking shaft (18) to rotate.

8. A portable low-negative pressure suction device according to claim 7, characterized in that: The transmission assembly includes: A driving column (17) is provided at the end of the driving plate (13); and A sliding frame (19) is arranged on the locking shaft (18), and the driving column (17) is slidably clamped in the sliding frame (19).

9. The portable low-negative-pressure suction device according to claim 2, characterized in that: The shell (1) is provided with a second through groove (6) on both sides for the liquid baffle plate (12) to move, and the air baffle plate (16) can also block the second through groove (6). The shell (1) is also provided with a third through groove (8) on both sides that is flush with the end surface of the second through groove (6). A sealing plate (30) is slidably mounted in the third through groove (8), and the end of the sealing plate (30) is in contact with the liquid baffle plate (12).

10. The portable low-negative-pressure suction device according to claim 9, characterized in that: Buzzers (9) are provided on both sides of the housing (1), abutment blocks (31) are provided at the ends of the sealing plate (30), a baffle (32) is provided inside the housing (1), a switch (33) electrically connected to the buzzer (9) is provided at the bottom of the baffle (32), and when the sealing plate (30) rises, the abutment blocks (31) abut against the switch (33).

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