Portable sputum aspirator

Abstract

The invention relates to the technical field of medical instruments, in particular to a portable sputum aspirator which comprises a first shell, a sputum storage device arranged on one side of the first shell and a pipeline communicated with the sputum storage device. A first cylinder, a second cylinder and a driving piece are fixedly arranged in the first shell, a first piston piece is arranged in the first cylinder in a sliding mode, a second piston piece is arranged in the second cylinder in a sliding mode, and the first piston piece and the second piston piece are connected with the driving piece at the same time; the moving directions of the first piston piece and the second piston piece are opposite; the first cylinder is divided into a first negative pressure chamber and a liquid spraying chamber by the first piston piece, the second cylinder is divided into a second negative pressure chamber by the second piston piece, and the first negative pressure chamber and the second negative pressure chamber are both communicated with the sputum storage device; the sputum aspirator solves the problem that an existing sputum aspirator cannot continuously generate negative pressure, so that thick sputum is inconvenient to suck out.

Description

Technical Field

[0001] The present invention relates to the technical field of medical appliances, and particularly relates to a portable sputum aspirator. Background Art

[0002] As an important medical device for respiratory tract care, the sputum aspirator plays a key role in clinical first aid and chronic disease care. Traditional sputum aspirators are mainly divided into two categories: manual negative pressure type and electric negative pressure type, and their working principles are both based on the intermittent negative pressure suction mode. The manual device generates instantaneous negative pressure by compressing a spring or an airbag, which has problems such as high operation intensity, unstable negative pressure value (usually fluctuating between -20 and -60 kPa), and inability to maintain continuous suction, and it is difficult to effectively remove highly viscous sputum. Although the electric device adopts a micro vacuum pump structure, it generally has technical defects such as short negative pressure maintenance time (the duration of a single suction is mostly less than 5 seconds) and a sharp decline in suction efficiency as the sputum viscosity increases. Especially for thick sputum with a relatively high viscosity, when existing sputum aspirator products deal with deep bronchial secretions, due to the inability to achieve continuous suction, the operation often needs to be frequently interrupted to re - establish negative pressure due to negative pressure interruption, which not only prolongs the sputum suction time, increases the discomfort of the patient, but also may affect the sputum suction effect due to operation interruption, and even pose risks such as damage to the patient's respiratory mucosa.

[0003] Therefore, in view of this, the inventor proposes a portable sputum aspirator to solve the above - mentioned technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a portable sputum aspirator, aiming to solve the problem that the existing sputum aspirator cannot continuously generate negative pressure, resulting in inconvenience in sucking out thick sputum.

[0005] In order to achieve the above - mentioned purpose, the technical solution adopted by the present invention is as follows: A portable sputum aspirator includes a first housing, a sputum storage device arranged on one side of the first housing, and a pipeline connected to the sputum storage device; A first cylinder, a second cylinder, and a driving member are fixedly arranged in the first housing. A first piston member is slidably arranged in the first cylinder, a second piston member is slidably arranged in the second cylinder. The first piston member and the second piston member are both connected to the driving member, and the moving directions of the first piston member and the second piston member are opposite; The first piston member divides the first cylinder into a first negative pressure chamber and a liquid spraying chamber, the second piston member divides the second cylinder into a second negative pressure chamber, and both the first negative pressure chamber and the second negative pressure chamber are communicated with the sputum storage device.

[0006] According to the above technical solution, the driving member drives the first driving shaft and the eccentric shaft group to rotate, driving the first piston member and the second piston member to reciprocate in opposite directions in their respective first cylinder and second cylinder. The movement of the first piston member causes the first negative pressure chamber and the liquid spraying chamber to expand / contract alternately. The second piston member synchronously controls the generation of negative pressure in the second negative pressure chamber. Through the complementary phase difference of the first negative pressure chamber and the second negative pressure chamber, it is ensured that the negative pressure value in the sputum storage device remains stable. Under the action of the negative pressure, sputum enters the sputum storage device through the pipeline, completing the collection of sputum.

[0007] Further, the driving member includes a motor fixedly arranged on one side of the first housing. The output shaft of the motor is connected to a first driving shaft. A first eccentric shaft, a second eccentric shaft, a third eccentric shaft, and a second driving shaft are connected to the first driving shaft. The first driving shaft and the second driving shaft are coaxially arranged, and the first eccentric shaft and the third eccentric shaft are coaxially arranged.

[0008] Further, the first piston member includes a first piston ring, a second piston ring, a first slide bar, a first pull rod, and a second pull rod that are symmetrically and sealingly slidably connected in the first cylinder. One end of the first pull rod is movably connected to the second piston ring, and the other end of the first pull rod is sleeved on the second eccentric shaft; One end of the second pull rod is sleeved on the third eccentric shaft, and the other end of the second pull rod is sleeved on the first slide bar. The first slide bar is slidably connected in the first cylinder, and a first connecting rod is arranged between the first slide bar and the first piston ring; The left side area of the first piston ring is the liquid spraying chamber, and the area between the first piston ring and the second piston ring is the first negative pressure chamber.

[0009] Further, the second piston member includes a third piston ring, a fourth piston ring, a second slide bar, a third pull rod, and a fourth pull rod that are symmetrically and sealingly slidably connected in the second cylinder. One end of the third pull rod is movably connected to the third piston ring, and the other end of the third pull rod is sleeved on the second eccentric shaft; One end of the fourth pull rod is sleeved on the third eccentric shaft, and the other end of the fourth pull rod is sleeved on the second slide bar. The second slide bar is slidably connected in the second cylinder, and a second connecting rod is arranged between the second slide bar and the fourth piston ring.

[0010] According to the above technical solution, the first piston part and the second piston part are driven to move symmetrically in opposite directions by the coaxial multi-eccentric shaft linkage, realizing the efficient coordinated operation of the sputum suction and drug administration functions. When the motor drives the first drive shaft to rotate, multiple groups of eccentric shafts synchronously drive multiple piston pull rods to move, causing the first piston part and the second piston part to form a reciprocating motion that is reversely complementary in the corresponding cylinders - when a group of pistons compresses the liquid spraying chamber to achieve atomized spraying of the liquid medicine, the other group of pistons synchronously expands the negative pressure chamber to generate continuous suction. The design of the phase difference between the two groups of piston movements ensures that the negative pressure fluctuation is significantly lower than that of traditional equipment; while reducing energy consumption, the power transmission efficiency is improved.

[0011] Further, the first negative pressure chamber is communicated with a first intake pipe communicated with the sputum storage device and a first outlet pipe communicated with the outside. A first one-way valve is arranged in the first intake pipe, and a second one-way valve is arranged in the first outlet pipe; The second negative pressure chamber is communicated with a second intake pipe communicated with the sputum storage device and a second outlet pipe communicated with the outside. A third one-way valve is arranged in the second intake pipe, and a fourth one-way valve is arranged in the second outlet pipe.

[0012] According to the above technical solution, when the first piston ring and the second piston ring move away from each other, the piston in the first negative pressure chamber expands, the first one-way valve in the first intake pipe opens, and the gas in the sputum storage device is pumped into the negative pressure chamber. At the same time, the second one-way valve in the first outlet pipe closes to maintain the negative pressure; when the first piston ring and the second piston ring move closer and compress, the second one-way valve opens to discharge the gas to the outside, and the first one-way valve closes to prevent gas backflow; the second negative pressure chamber works in the same principle and in reverse synchronization through the third one-way valve and the fourth one-way valve. The two negative pressure chambers alternately generate negative pressure pulses, and through phase difference complementarity, an uninterrupted negative pressure suction is formed in the sputum storage device. The dual-channel independent valve group design breaks through the traditional single gas path limitation, and eliminates the negative pressure fluctuation through dynamic air flow balance, ensuring that the negative pressure increases gently when high-viscosity sputum is adsorbed, and avoiding mucosal damage.

[0013] Further, a second housing is arranged on one side of the first housing. A mixer is arranged in the second housing. A sliding head is slidably arranged in the mixer. The sliding head divides the inner cavity of the mixer into a first cavity and a second cavity. The first cavity is communicated with an oxygen inlet pipe, a medicine inlet pipe and a discharge pipe. A fifth one-way valve is arranged in the oxygen inlet pipe, a sixth one-way valve is arranged in the medicine inlet pipe, and a seventh one-way valve is arranged in the discharge pipe; The free end of the oxygen inlet pipe is connected to an oxygen cylinder, the free end of the medicine inlet pipe is connected to a liquid medicine bottle, and the free end of the discharge pipe is communicated with the liquid spraying chamber.

[0014] Further, a spring is sleeved on the bottom of the sliding head. The spring has a tendency to drive the sliding head to move downward. The second drive shaft extends into the liquid mixer and is connected with a cam. The cam periodically drives the sliding head to move upward to mix oxygen and liquid medicine.

[0015] According to the above technical solution, the liquid mixer realizes efficient gas-liquid mixing through the volume change driven by the cam. When the second drive shaft drives the cam to rotate to the lift stage, the sliding head is pushed upward to compress the first cavity. At this time, the fifth one-way valve and the sixth one-way valve are closed under the action of the positive pressure in the cavity. The mixed oxygen and liquid medicine push open the seventh one-way valve under the boosting action and are sprayed into the liquid spraying chamber at a high speed through the discharge pipe. When the cam turns into the return stroke stage, the spring drives the sliding head to move downward to expand the volume of the first cavity, and a negative pressure is formed in the cavity, forcing the fifth one-way valve and the sixth one-way valve to open synchronously. The media in the oxygen cylinder and the liquid medicine bottle enter the first cavity through the oxygen inlet pipe and the medicine inlet pipe, and form a turbulent shear in the reciprocating movement of the sliding head to achieve sufficient mixing. In this embodiment, the rotational power of the sputum suction drive shaft is reused as the liquid mixing power source, and the volume change of the cavity and the opening and closing of the one-way valve group are synchronously controlled by a single cam mechanism, realizing gas-liquid dynamic mixing and pulsed atomizing injection without an independent pump body, making the atomizing cycle of the liquid medicine match the negative pressure suction action precisely, improving the drug delivery uniformity while simplifying the structure, and enhancing the bronchial penetration ability of the atomized particles by using the boosting jet airflow, effectively solving the technical defect that the traditional sputum suction device cannot perform airway humidification and mucus dilution synchronously.

[0016] Further, the pipeline includes a main pipe body arranged on one side of the sputum storage device, a negative pressure pipe and a liquid mixing pipe arranged in the main pipe body. The end of the negative pressure pipe is connected with a negative pressure head, a rotating disc is installed on the negative pressure pipe, one end of the liquid mixing pipe penetrates through the sputum storage device and is communicated with the liquid spraying chamber, and the other end of the liquid mixing pipe is communicated with the inner cavity of the rotating disc.

[0017] Further, the rotating disc includes an inner ring, a disc shell, a turbine arranged in the disc shell and two end covers. The inner ring is sleeved on the negative pressure pipe and fixed to the negative pressure pipe. The turbine is fixedly connected with the disc shell, and the turbine is rotationally connected with the inner ring. A plurality of air flow holes are formed in the disc shell, and the air flow holes are communicated with the liquid mixing pipe. A plurality of semiconductor refrigerating sheets are arranged on the disc shell, and the outer surface of the semiconductor refrigerating sheet protrudes from the outer periphery of the disc shell.

[0018] Further, a permanent magnet rotor ring is fixed on the inner edge of the turbine, the magnetic poles of the permanent magnet rotor ring are arranged alternately along the circumferential direction of the inner edge of the turbine, a stator coil group is embedded in the inner wall of the inner ring, and the stator coil group and the permanent magnet rotor ring form an axial flux power generation assembly. The axial flux power generation assembly is electrically connected with the semiconductor refrigerating sheets.

[0019] According to the above technical scheme, when negative pressure suction is started, the mixture of liquid medicine and oxygen drives the turbine to drive the disk shell to rotate around the fixed inner ring, and the atomized liquid medicine and oxygen input into the mixing tube are atomized and sprayed out through the air flow holes under the action of centrifugal force; synchronously, the permanent magnet rotor ring on the inner edge of the turbine and the inner ring stator coil group constitute an axial magnetic flux power generation component, which converts the rotational kinetic energy of the turbine into electrical energy, and directly drives the semiconductor refrigeration chip to work. The hot end of the semiconductor refrigeration chip heats up the atomized liquid medicine particles to improve the atomization effect, and the cold end contacts the sputum by protruding from the outer surface of the disk shell, and uses the condensation effect generated by the temperature difference to reduce the sputum viscosity of the thick sputum. At the same time, the outer surface of the edge of the rotating cooling plate protrudes from the periphery of the disk shell, physically stirring the sputum to promote peeling, thereby realizing atomization drug administration without an external power supply, improving the rheological properties of sputum and self-cooling of the equipment, and breaking through the technical limitations of the traditional sputum suction device that separates the atomization and suction functions; the energy conversion of the axial magnetic flux power generation component and the directional heat conduction design of the semiconductor cooling plate can enable the atomization temperature of the drug solution to be accurately controlled within the physiological adaptation range. At the same time, the dynamic shearing effect of the rotating semiconductor cooling plate on thick sputum significantly improves the suction efficiency, forming a synergistic enhancement effect of "attraction promotes atomization, and atomization helps clearing".

[0020] Beneficial effects of the present invention: The present invention uses a coaxial multi-eccentric shaft linkage mechanism to drive a dual-piston negative pressure system, a gas-liquid mixing device and an atomizing cooling module in a time-sharing manner using a single motor power, thereby realizing mechanical coordination of sputum suction, drug administration and oxygen supply functions, breaking through the technical barrier of traditional equipment requiring multiple power sources, achieving a high degree of integration of treatment functions while ensuring portability, and significantly reducing equipment complexity and operating energy consumption.

[0021] The present invention utilizes the kinetic energy of sputum suction gas to drive the turbine to generate electricity, and converts mechanical energy into electrical energy through the axial magnetic flux component to supply the semi-cold plate, forming an energy self-circulation system without an external power supply, realizing adaptive control of the temperature of atomized particles and dynamic adjustment of sputum viscosity, and solving the technical bottleneck of traditional atomizers relying on external power supply and temperature control lag.

[0022] The present invention is based on the multi-mechanism synergy of double-piston phase-difference negative pressure, pulsed gas-liquid atomization and rotary shear stirring to construct a three-dimensional treatment system of "continuous suction-directional atomization-sputum rheology improvement", which can simultaneously complete secretion clearance, drug penetration and airway protection in a single operation, completely changing the limitation of the single function of traditional sputum suction devices, and is particularly suitable for the efficient treatment of high-viscosity sputum and the comprehensive care of critically ill patients.

[0023] Other advantages, objectives and features of the present application will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the following specific embodiments. Brief Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall structure of the portable sputum aspirator of the present invention; Figure 2 is a schematic diagram of the sectional structure of the portable sputum aspirator of the present invention; Figure 3 is a schematic diagram of the partial disassembled structure (view Figure 1 ) of the portable sputum aspirator of the present invention; Figure 4 is a schematic diagram of the partial disassembled structure (view Figure 2 ) of the portable sputum aspirator of the present invention; Figure 5 is a schematic diagram of a partial structure of the driving member in the portable sputum aspirator of the present invention; Figure 6 is in the portable sputum aspirator of the present invention Figure 2 schematic diagram of a partial structure; Figure 7 is in the portable sputum aspirator of the present invention Figure 6 schematic diagram of a partial enlarged structure; Figure 8 is a schematic diagram of the disassembled structure of the portable sputum aspirator of the present invention in one direction; Figure 9 is a schematic diagram of the disassembled structure of the portable sputum aspirator of the present invention in another direction; Figure 10 is a schematic diagram of the partial sectional structure of the mixer in the portable sputum aspirator of the present invention; Figure 11 is a schematic diagram of the structure in which the negative pressure head and the rotating disk of the portable sputum aspirator of the present invention are installed on the main body; Figure 12 is a schematic diagram of the disassembled structure of the rotating disk of the portable sputum aspirator of the present invention; Figure 13 is in the portable sputum aspirator of the present invention Figure 4 schematic diagram of the enlarged structure of part A.

[0025] Among them, the first housing 1, the sputum storage device 2, the main body 21, the negative pressure tube 22, the liquid mixing tube 23, the negative pressure head 24, the rotating disk 25, the inner ring 251, the disk housing 252, the turbine 253, the air flow holes 254, the semiconductor refrigeration sheet 255, the pipeline 3, the first cylinder 4, the first negative pressure chamber 41, the liquid spraying chamber 42, the first air inlet pipe 43, the first air outlet pipe 44, the second cylinder 5, the second negative pressure chamber 51, the second air inlet pipe 52, the second air outlet pipe 53, the driving member 6, the motor 61, the first driving shaft 62, the first eccentric shaft 63, the second eccentric shaft 64, the third eccentric shaft 65, the second driving shaft 66, the first piston member 7, the first piston ring 71, the second piston ring 72, the first slide rod 73, the first pull rod 74, the second pull rod 75, the first connecting rod 76, the second piston member 8, the third piston ring 81, the fourth piston ring 82, the second slide rod 83, the third pull rod 84, the fourth pull rod 85, the second connecting rod 86, the second housing 9, the liquid mixer 91, the sliding head 92, the first cavity 911, the second cavity 912, the oxygen inlet pipe 93, the medicine inlet pipe 94, the discharge pipe 95, the spring 96, and the cam 97. Detailed implementation manners

[0026] The following will illustrate the implementation manners of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, rather than for limiting the protection scope of the present invention.

[0027] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0028] This embodiment provides a portable sputum aspirator, as Figures 1 to 13 shown, which includes a first housing 1, a sputum storage device 2 provided on the left side of the first housing 1, and a pipeline 3 connected to the sputum storage device 2. The pipeline 3 is provided on the left side of the sputum storage device 2 and is connected to the inside of the sputum storage device 2.

[0029] As Figure 2 and Figure 3As shown in the figure, a first cylinder 4, a second cylinder 5 and a driving member 6 are fixedly arranged in a first housing 1. A first piston member 7 is slidably arranged in the first cylinder 4, and a second piston member 8 is slidably arranged in the second cylinder 5. The first piston member 7 and the second piston member 8 are both connected to the driving member 6, and the moving directions of the first piston member 7 and the second piston member 8 are opposite; the first piston member 7 divides the first cylinder 4 into a first negative pressure chamber 41 and a liquid spraying chamber 42, the liquid spraying chamber 42 is located on the left side of the first negative pressure chamber 41, and the second piston member 8 divides the second cylinder 5 into a second negative pressure chamber 51. Both the first negative pressure chamber 41 and the second negative pressure chamber 51 are communicated with a sputum storage device 2.

[0030] As a preferred embodiment, as Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the driving member 6 includes a motor 61 fixedly arranged on one side of the first housing 1. The output shaft of the motor 61 is connected with a first driving shaft 62, and a first eccentric shaft 63, a second eccentric shaft 64, a third eccentric shaft 65 and a second driving shaft 66 are connected to the first driving shaft 62; as Figure 5 shown, the first driving shaft 62 and the second driving shaft 66 are coaxially arranged, and the first eccentric shaft 63 and the third eccentric shaft 65 are coaxially arranged.

[0031] As Figure 6 and Figure 7 shown, the first piston member 7 includes a first piston ring 71, a second piston ring 72, a first sliding rod 73, a first pull rod 74 and a second pull rod 75 which are symmetrically and sealingly slidably connected in the first cylinder 4. The left end of the first pull rod 74 is hinged to the second piston ring 72, and the right end of the first pull rod 74 is sleeved on the second eccentric shaft 64; the right end of the second pull rod 75 is sleeved on the third eccentric shaft 65, the left end of the second pull rod 75 is sleeved on the first sliding rod 73, and the first sliding rod 73 is slidably connected in the first cylinder 4; specifically, two guide rods are fixedly arranged in the first cylinder 4, the first sliding rod 73 is sleeved between the two guide rods, and the first sliding rod 73 can slide along the axial directions of the two guide rods; a first connecting rod 76 is arranged between the first sliding rod 73 and the first piston ring 71, the right end of the connecting rod extends into the first cylinder 4 and is fixedly connected to the first piston ring 71, and the first sliding rod 73 is sealingly and slidably connected to the first cylinder 4; In this embodiment, as Figure 7 shown, the left side area of the first piston ring 71 is the liquid spraying chamber 42, and the area between the first piston ring 71 and the second piston ring 72 is the first negative pressure chamber 41.

[0032] As a preferred embodiment, as Figure 6 and Figure 7As shown in the figure, the second piston member 8 includes a third piston ring 81, a fourth piston ring 82, a second slide bar 83, a third pull rod 84, and a fourth pull rod 85 that are symmetrically and sealingly slidably connected within the second cylinder 5. The right end of the third pull rod 84 is hinged to the third piston ring 81, and the left end of the third pull rod 84 is sleeved on the second eccentric shaft 64. The area between the third piston ring 81 and the fourth piston ring 82 is the second negative pressure chamber 51; The left end of the fourth pull rod 85 is sleeved on the third eccentric shaft 65, the right end of the fourth pull rod 85 is sleeved on the second slide bar 83, the second slide bar 83 is slidably connected within the second cylinder 5, and a second connecting rod 86 is provided between the second slide bar 83 and the fourth piston ring 82.

[0033] In this embodiment, by adopting the form of coaxial multi-eccentric shaft linkage to drive the first piston member 7 and the second piston member 8 to move symmetrically in reverse, the coordinated operation of the sputum suction and drug administration functions is realized. When the motor 61 drives the first drive shaft 62 to rotate, multiple groups of eccentric shafts (the first eccentric shaft 63, the second eccentric shaft 64, the third eccentric shaft 65, and the second drive shaft 66) synchronously drive multiple piston pull rods (the first pull rod 74, the second pull rod 75, the third pull rod 84, and the fourth pull rod 85) to move, so that the first piston member 7 and the second piston member 8 form a reverse complementary reciprocating motion within the corresponding cylinders (the first cylinder 4 and the second cylinder 5). Among them, the movement of the first piston member 7 causes the first negative pressure chamber 41 and the liquid spraying chamber 42 to alternately expand / contract, and the second piston member 8 synchronously controls the generation of negative pressure in the second negative pressure chamber 51. Through the phase difference complementarity of the first negative pressure chamber 41 and the second negative pressure chamber 51, it is ensured that the negative pressure value in the sputum storage device 2 remains stable continuously. Under the action of the negative pressure, sputum enters the sputum storage device 2 through the pipeline 3, and the collection of sputum is completed. In this embodiment, the design of the phase difference of the two groups of piston movements ensures that the negative pressure fluctuation is significantly lower than that of traditional equipment, can realize continuous suction, and avoids the trouble of frequently interrupting the operation to re-establish the negative pressure due to the interruption of the negative pressure. It not only reduces the sputum suction time, but also improves the power transmission efficiency while reducing energy consumption.

[0034] As a preferred embodiment, as Figure 4 、 Figure 6 and Figure 7 shown, the first negative pressure chamber 41 is communicated with a first intake pipe 43 that is communicated with the sputum storage device 2 and a first outlet pipe 44 that is communicated with the outside. A first one-way valve is provided in the first intake pipe 43, and a second one-way valve is provided in the first outlet pipe 44; The second negative pressure chamber 51 is communicated with a second intake pipe 52 that is communicated with the sputum storage device 2 and a second outlet pipe 53 that is communicated with the outside. A third one-way valve is provided in the second intake pipe 52, and a fourth one-way valve is provided in the second outlet pipe 53.

[0035] In this embodiment, with Figure 6Taking the first cylinder 4 on the left side as an example, when the motor 61 starts, it drives the first drive shaft 62 to rotate. The change in the position of the second eccentric shaft 64 drives the first pull rod 74 to move to the right. At the same time, the change in the position of the third eccentric shaft 65 drives the first sliding rod 73 to move to the left through the second pull rod 75. At this time, the first piston ring 71 and the second piston ring 72 move away from each other, and the first negative pressure chamber 41 expands. The first one-way valve in the first air inlet pipe 43 opens, and the gas in the sputum storage device 2 is pumped into the first negative pressure chamber 41. At the same time, the second one-way valve in the first air outlet pipe 44 closes to maintain the negative pressure, and the air of the suction device is sucked. Similarly, when the first piston ring 71 and the second piston ring 72 approach and compress each other, the second one-way valve opens to discharge the gas to the outside, and the first one-way valve closes to prevent the gas from flowing back. The second negative pressure chamber 51 works in reverse synchronously with the same principle through the third one-way valve and the fourth one-way valve. The two negative pressure chambers (the first negative pressure chamber 41 and the second negative pressure chamber 51) alternately generate negative pressure pulses, and through the phase difference complementarity, an uninterrupted negative pressure suction is formed in the sputum storage device 2. The double-channel independent valve group design breaks through the traditional single air path limitation, and eliminates the negative pressure fluctuation through the dynamic air flow balance, ensuring that the negative pressure is gentle when high-viscosity sputum is adsorbed, and avoiding mucosal damage during suction.

[0036] As a preferred embodiment, a second housing 9 is provided on one side of the first housing 1, and a mixer 91 is arranged in the second housing 9; as Figure 10 shown, a sliding head 92 is slidably arranged in the mixer 91. The sliding head 92 divides the inner cavity of the mixer 91 into a first cavity 911 and a second cavity 912. An oxygen inlet pipe 93, a medicine inlet pipe 94 and a discharge pipe 95 are communicated in the first cavity 911. A fifth one-way valve is arranged in the oxygen inlet pipe 93, a sixth one-way valve is arranged in the medicine inlet pipe 94, and a seventh one-way valve is arranged in the discharge pipe 95. The free end of the oxygen inlet pipe 93 is connected to an oxygen cylinder, the free end of the medicine inlet pipe 94 is connected to a medicine solution bottle, and the free end of the discharge pipe 95 is communicated with the liquid spraying chamber 42. A spring 96 is sleeved at the bottom of the sliding head 92. The spring 96 has a tendency to drive the sliding head 92 to move downward. The second drive shaft 66 extends into the mixer 91 and is coaxially connected with a cam 97. The cam 97 periodically drives the sliding head 92 to move upward to mix oxygen and medicine solution.

[0037] In this embodiment, the mixer 91 achieves efficient gas-liquid mixing through the volume change of the first chamber driven by the cam 97. It should be noted that during the sputum suction process, mixing the medicinal liquid with oxygen can achieve the synergistic effects of sputum dilution, airway humidification, and auxiliary oxygen supply. The medicinal liquid in this embodiment is preferably a sputum lysing agent, which is used to reduce the viscosity of sputum and soften the crusty secretions, making it easier to be aspirated by negative pressure. The purpose of mixing oxygen with the medicinal liquid is to not only avoid the dry damage of the airway mucosa caused by simple negative pressure suction but also prevent the transient decrease in blood oxygen saturation caused by the sputum suction operation, which is particularly important for patients with respiratory insufficiency. By spraying the mixed aerosol in the form of atomization, the medicinal liquid can evenly cover the surface of the airway, improving the sputum dissolution efficiency. The incorporation of oxygen not only enhances the diffusivity of the atomized particles but also promotes the penetration of the medicinal liquid deep into the bronchi through its air flow carrier function, forming a triple treatment mode of "suction, drug administration, and oxygen supply at the same time", significantly reducing the risk of mucosal damage caused by repeated intubation in traditional operations, shortening the sputum suction time, and improving the patient's tolerance and treatment effect.

[0038] During the specific implementation process, when the motor 61 rotates and drives the cam 97 to rotate to the lift stage through the second drive shaft 66, the sliding head 92 is pushed upward to compress the first cavity 911. At this time, the fifth one-way valve and the sixth one-way valve are closed under the positive pressure in the cavity. The mixed oxygen and medicinal liquid push open the seventh one-way valve under the pressure boost and are sprayed into the liquid spraying chamber 42 at high speed through the discharge pipe 95. At this time, the liquid spraying chamber 42 is in a compressed state and enters the liquid mixing pipe 23 through the liquid spraying chamber 42; when the cam 97 turns to the return stroke stage, the spring 96 drives the sliding head 92 to move downward to expand the volume of the first cavity 911. A negative pressure is formed in the first cavity 911, forcing the fifth one-way valve and the sixth one-way valve to open synchronously. The media in the oxygen cylinder and the medicinal liquid bottle, the oxygen inlet pipe 93 and the medicine inlet pipe 94, are sucked into the first cavity 911 and form turbulent shear during the reciprocating movement of the sliding head 92 to achieve sufficient mixing. In this example, the rotational power of the sputum suction drive shaft is reused as the liquid mixing power source, and the volume change of the cavity and the opening and closing of the one-way valve group are synchronously controlled through a single cam 97 mechanism, realizing gas-liquid dynamic mixing and pulsed atomization spraying without an independent pump body, making the atomization cycle of the medicinal liquid accurately match the negative pressure suction action, improving the drug administration uniformity while simplifying the structure, and enhancing the bronchial penetration ability of the atomized particles by using the pressurized jet airflow, effectively solving the technical defect that the traditional sputum suction device cannot perform airway humidification and mucus dilution simultaneously.

[0039] As a preferred implementation manner, as Figure 13 shown, the pipeline 3 includes a main pipe body 21 arranged on one side of the sputum storage device 2, a negative pressure pipe 22 arranged in the main pipe body 21, and a liquid mixing pipe 23. The end of the negative pressure pipe 22 is connected with a negative pressure head 24, and a rotating disk 25 is installed on the negative pressure pipe 22; as Figure 4As shown, the right end of the liquid mixing tube 23 penetrates through the sputum storage device 2 and communicates with the liquid spraying chamber 42. An eighth one-way valve is provided on the liquid mixing tube 23, and the left end of the liquid mixing tube 23 communicates with the inner cavity of the rotating disk 25.

[0040] Specifically, as Figure 12 described, the rotating disk 25 includes an inner ring 251, a disk shell 252, a turbine 253 arranged inside the disk shell 252 and two end covers. The inner ring 251 is sleeved on the negative pressure tube 22 and fixed to the negative pressure tube 22. The turbine 253 is rotatably installed on the outer periphery of the inner ring 251 and fixedly connected to the disk shell 252. The turbine 253 is rotatably connected to the inner ring 251. A number of air flow holes 254 are formed in the disk shell 252, and the air flow holes 254 communicate with the liquid mixing tube 23. A number of semiconductor refrigeration sheets 255 are provided on the disk shell 252, and the outer surfaces of the semiconductor refrigeration sheets 255 protrude from the outer periphery of the disk shell 252.

[0041] A permanent magnet rotor ring (not shown) is fixed to the inner edge of the turbine 253. The magnetic poles of the permanent magnet rotor ring are alternately arranged along the circumferential direction of the inner edge of the turbine 253. A stator coil group (not shown) is embedded in the inner wall of the inner ring 251. The stator coil group and the permanent magnet rotor ring form an axial flux power generation assembly, and the axial flux power generation assembly is electrically connected to the semiconductor refrigeration sheet 255.

[0042] In this embodiment, when the negative pressure suction is started, the liquid medicine and oxygen mixture enters the rotating disk 25 through the liquid mixing tube 23. At this time, the liquid medicine and oxygen mixture pushes the turbine 253 to rotate, and then drives the turbine 253 and the disk shell 252 to rotate axially around the inner ring 251. The atomized liquid medicine and oxygen input by the liquid mixing tube 23 are atomized and ejected through the air flow holes 254 under the action of pressure and centrifugal force. Synchronously, the permanent magnet rotor ring on the inner edge of the turbine 253 and the stator coil group of the inner ring 251 form an axial flux power generation assembly, which converts the rotational kinetic energy of the turbine 253 into electrical energy to drive the semiconductor refrigeration sheet 255 to work. The hot end of the semiconductor refrigeration sheet 255 raises the temperature of the atomized liquid medicine particles to improve the atomization effect. The cold end of the semiconductor refrigeration sheet 255 contacts the sputum through the outer surface protruding from the disk shell 252, and uses the condensation effect generated by the temperature difference to reduce the viscosity of the thick sputum. At the same time, the outer surface of the edge of the rotating refrigeration sheet protrudes from the outer periphery of the disk shell 252, and the cold end of the semiconductor refrigeration sheet 255 physically contacts and stirs the sputum to promote peeling, realizing the simultaneous achievement of atomized drug delivery without an external power source, improvement of sputum rheological properties, and physical sputum agitation and peeling, breaking through the technical limitation of the separation of the atomization and suction functions of traditional suction devices; among them, the energy conversion of the axial flux power generation assembly and the directional heat conduction design of the semiconductor refrigeration sheet 255 can accurately control the atomization temperature of the liquid medicine within the physiological adaptation range. At the same time, the dynamic shearing effect of the rotating semiconductor refrigeration sheet 255 on the thick sputum significantly improves the suction efficiency, forming a synergistic enhancement effect of "suction promotes atomization, atomization helps cleaning". The structure of the present invention is compact and has high application value.

[0043] The above embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art of this technology on the basis of the present invention are all within the protection scope of the present invention.

Claims

1. A portable sputum suction device, characterized in that: It comprises a first shell (1), a phlegm storage device (2) arranged on one side of the first shell (1), and a pipeline (3) connected to the phlegm storage device (2); A first cylinder (4), a second cylinder (5) and a driving member (6) are fixedly arranged in the first housing (1); a first piston member (7) is slidably arranged in the first cylinder (4); a second piston member (8) is slidably arranged in the second cylinder (5); the first piston member (7) and the second piston member (8) are connected to the driving member (6) at the same time; and the first piston member (7) and the second piston member (8) move in opposite directions; The first piston member (7) divides the first cylinder (4) into a first negative pressure chamber (41) and a liquid spraying chamber (42), and the second piston member (8) divides the second cylinder (5) into a second negative pressure chamber (51). Both the first negative pressure chamber (41) and the second negative pressure chamber (51) are connected to the sputum storage device (2).

2. The portable sputum suction device according to claim 1, characterized in that: The driving member (6) comprises a motor (61) fixedly arranged on one side of the first housing (1); the output shaft of the motor (61) is connected to a first driving shaft (62); the first driving shaft (62) is connected to a first eccentric shaft (63), a second eccentric shaft (64), a third eccentric shaft (65) and a second driving shaft (66); the first driving shaft (62) and the second driving shaft (66) are coaxially arranged; and the first eccentric shaft (63) and the third eccentric shaft (65) are coaxially arranged.

3. The portable sputum suction device according to claim 2, characterized in that: The first piston member (7) comprises a first piston ring (71), a second piston ring (72), a first sliding rod (73), a first pull rod (74) and a second pull rod (75) which are symmetrically sealed and slidably connected in the first cylinder (4); one end of the first pull rod (74) is movably connected to the second piston ring (72), and the other end of the first pull rod (74) is sleeved on the second eccentric shaft (64); One end of the second pull rod (75) is sleeved on the third eccentric shaft (65), and the other end of the second pull rod (75) is sleeved on the first sliding rod (73); the first sliding rod (73) is slidably connected in the first cylinder (4); and a first connecting rod (76) is provided between the first sliding rod (73) and the first piston ring (71); The left area of ​​the first piston ring (71) is a spray chamber (42), and the area between the first piston ring (71) and the second piston ring (72) is a first negative pressure chamber (41).

4. The portable sputum suction device according to claim 3, characterized in that: The second piston member (8) comprises a third piston ring (81), a fourth piston ring (82), a second sliding rod (83), a third pull rod (84) and a fourth pull rod (85) which are symmetrically and sealingly connected to the second cylinder (5) in a sliding manner, one end of the third pull rod (84) is movably connected to the third piston ring (81), and the other end of the third pull rod (84) is sleeved on the second eccentric shaft (64); One end of the fourth pull rod (85) is sleeved on the third eccentric shaft (65), and the other end of the fourth pull rod (85) is sleeved on the second sliding rod (83). The second sliding rod (83) is slidably connected in the second cylinder (5), and a second connecting rod (86) is provided between the second sliding rod (83) and the fourth piston ring (82).

5. The portable sputum suction device according to claim 4, characterized in that: The first negative pressure chamber (41) is connected to a first air inlet pipe (43) connected to the sputum storage device (2) and a first air outlet pipe (44) connected to the outside, the first air inlet pipe (43) is provided with a first one-way valve, and the first air outlet pipe (44) is provided with a second one-way valve; The second negative pressure chamber (51) is connected to a second air inlet pipe (52) connected to the sputum storage device (2) and a second air outlet pipe (53) connected to the outside, a third one-way valve is provided in the second air inlet pipe (52), and a fourth one-way valve is provided in the second air outlet pipe (53).

6. The portable sputum suction device according to claim 5, characterized in that: A second shell (9) is provided on one side of the first shell (1), a liquid mixer (91) is provided in the second shell (9), a sliding head (92) is slidably provided in the liquid mixer (91), the sliding head (92) divides the inner cavity of the liquid mixer (91) into a first cavity (911) and a second cavity (912), an oxygen inlet pipe (93), a drug inlet pipe (94) and a discharge pipe (95) are connected in the first cavity (911), a fifth one-way valve is provided in the oxygen inlet pipe (93), a sixth one-way valve is provided in the drug inlet pipe (94), and a seventh one-way valve is provided in the discharge pipe (95); The free end of the oxygen inlet pipe (93) is connected to an oxygen bottle, the free end of the medicine inlet pipe (94) is connected to a medicine liquid bottle, and the free end of the discharge pipe (95) is in communication with the liquid spraying chamber (42).

7. The portable sputum suction device according to claim 6, characterized in that: A spring (96) is sleeved on the bottom of the sliding head (92), and the spring (96) has a tendency to drive the sliding head (92) to move downward. The second driving shaft (66) extends into the liquid mixer (91) and is connected to a cam (97). The cam (97) periodically drives the sliding head (92) to move upward to mix the oxygen and the liquid medicine.

8. The portable sputum suction device according to claim 3, characterized in that: The pipeline (3) comprises a main body (21) arranged on one side of the sputum storage container (2), a negative pressure pipe (22) and a mixing liquid pipe (23) arranged in the main body (21); the end of the negative pressure pipe (22) is connected to a negative pressure head (24); a rotating disk (25) is installed on the negative pressure pipe (22); one end of the mixing liquid pipe (23) passes through the sputum storage container (2) and is connected to the liquid spraying chamber (42); the other end of the mixing liquid pipe (23) is connected to the inner cavity of the rotating disk (25).

9. The portable sputum suction device according to claim 8, characterized in that: The rotating disk (25) comprises an inner ring (251), a disk shell (252), a turbine (253) arranged in the disk shell (252), and two end covers; the inner ring (251) is sleeved on the negative pressure tube (22) and fixed to the negative pressure tube (22); the turbine (253) and the disk shell (252) are fixedly connected; the turbine (253) and the inner ring (251) are rotatably connected; a plurality of air flow holes (254) are provided on the disk shell (252); the air flow holes (254) are communicated with the mixing liquid tube (23); a plurality of semiconductor cooling plates (255) are provided on the disk shell (252); the outer surfaces of the semiconductor cooling plates (255) protrude from the outer periphery of the disk shell (252).

10. The portable sputum suction device according to claim 9, characterized in that: A permanent magnet rotor ring is fixed to the inner edge of the turbine (253), and the magnetic poles of the permanent magnet rotor ring are alternately arranged along the circumference of the inner edge of the turbine (253). A stator coil group is embedded in the inner wall of the inner ring (251). The stator coil group and the permanent magnet rotor ring constitute an axial magnetic flux power generation component, and the axial magnetic flux power generation component is electrically connected to the semiconductor cooling plate (255).

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