Autonomous alarm type saliva collecting and metering device

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to an autonomous alarm type saliva collecting and metering device which comprises a driving assembly, an oral cavity supporting part and a collecting bag, the oral cavity supporting part is placed in the oral cavity of a patient, and saliva is guided into a pipette through a drainage hole. The liquid suction pipe is connected with the driving assembly, the driving assembly sucks saliva by generating negative pressure, and the saliva is conveyed into the collecting bag through the liquid discharge pipe. Due to the arrangement of the oral cavity supporting part, use of a head-mounted fixator in the prior art is avoided, the comfort level of a patient is remarkably improved, and meanwhile the stability and effectiveness of the device are ensured. Through the cooperation of the proximity sensor and the trigger, the automatic monitoring and alarming functions of the liquid level of saliva in the collecting bag are achieved, the work of frequent manual inspection of nursing personnel is omitted, the nursing intensity is remarkably reduced, the nursing efficiency is improved, and the device is particularly suitable for scenes needing long-term nursing.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary devices, and particularly to an autonomous alarm type salivation collection and metering device. Background Art

[0002] Currently, due to reasons such as long-term illness, disability, or being in a special treatment stage, patients who are unable to take care of themselves have severely reduced their daily living abilities, and partial or complete dependence on others for assistance has become a common clinical phenomenon. Especially for patients who are bedridden for a long time, sitting in a chair for a long time, or are only confined to indoor life and unable to go out, these patients often completely lose their ability to take care of themselves and are difficult to independently handle situations such as saliva overflow. This poses a great hidden danger to the oral and surrounding environmental hygiene. Moreover, saliva overflow is very likely to bring strong discomfort to the patients themselves, causing skin irritation and even infection. At the same time, it will also affect the dryness and cleanliness of surrounding items such as pillows and bed sheets, greatly increasing the cleaning burden on caregivers.

[0003] Chinese Patent Publication No. CN214969369U discloses a salivation collector for bedridden patients. It uses a semi-circular soft pad and a metal shaping plate to cooperate with each other. In theory, it can closely fit under the patient's mouth according to the actual needs of patients with different face shapes through a connecting frame to achieve the purpose of saliva collection. However, this patent still has the following problems: 1. Although this patent has a basic saliva collection function, its fixation process requires the nursing staff to manually and finely adjust the shaping plate and the tightening belt, which undoubtedly significantly increases the complexity of the operation. Frequent manual adjustment will not only consume a lot of precious time and energy, especially when the device needs to be frequently replaced or cleaned, such a cumbersome device is likely to slow down the overall nursing efficiency.

[0004] 2. The solution of using a metal shaping plate for fixation has certain limitations in adaptability to the diverse facial shapes of patients. When worn for a long time, it is very easy to have problems such as displacement or poor fitting, which will greatly reduce the collection effect, and even an embarrassing situation where some saliva overflows again may occur. Summary of the Invention

[0005] To solve the above problems, an autonomous alarm type salivation collection and metering device is provided. By placing the oral support part in the patient's oral cavity, saliva is introduced into the suction tube through the drainage holes. The suction tube is connected to the driving component, and the driving component sucks the saliva by generating negative pressure and transports it to the collection bag through the drainage tube. The setting of the oral support part avoids the use of the head-mounted fixator in the prior art, significantly improves the comfort of the patient, and at the same time ensures the stability and effectiveness of the device. Through the cooperation of the proximity sensor and the trigger, the automatic monitoring and alarm function of the saliva liquid level in the collection bag is realized, eliminating the need for frequent manual inspections by nursing staff, significantly reducing the nursing intensity, and improving the nursing efficiency, especially suitable for scenarios requiring long-term care.

[0006] To solve the problems of the prior art, the present invention provides an autonomous alarm type salivation collection and metering device, which includes a driving component, an oral support part and a collection bag. The oral support part is located in the patient's oral cavity, and a plurality of drainage holes are provided on the oral support part; the top of the driving component is provided with a mounting plate that can slide in the height direction, and the mounting plate is elastically connected to the driving component; the collection bag is placed on the mounting plate; the driving component is provided with a suction tube communicated with the drainage holes and a drainage tube communicated with the collection bag; the suction tube is used to suck the saliva around the oral support part into the driving component through the suction tube, and the driving component discharges the saliva into the collection bag through the drainage tube; a trigger is provided at the bottom of the mounting plate, and a proximity sensor is provided at the top of the driving component. When the saliva in the collection bag reaches the warning level, the mounting plate slides down under the action of gravity, so that the trigger approaches the proximity sensor to trigger an alarm signal.

[0007] Preferably, the oral support part includes an upper dental appliance and a lower dental appliance. Collection cavities are provided in both the upper dental appliance and the lower dental appliance, and a plurality of drainage holes are respectively provided on the inner walls of the collection cavities of the upper dental appliance and the lower dental appliance. The end of the suction tube close to the oral support part is provided with a first branch and a second branch, and the first branch and the second branch are respectively communicated with the collection cavities of the upper dental appliance and the lower dental appliance.

[0008] Preferably, the collection cavities of the upper dental appliance and the lower dental appliance are both elastic structures that can expand in the vertical direction. A plurality of telescopic air columns are provided in the collection cavities, an air cavity is provided beside the collection cavities, one end of the air column is fixedly connected to the collection cavity, the other end of the air column is communicated with the air cavity, and a first pipeline communicated with the driving component is provided on the air cavity.

[0009] Preferably, both the upper dental appliance and the lower dental appliance are U-shaped structures. The end of the upper dental appliance is provided with a mounting hole, and the lower dental appliance is provided with a support rod adapted to the mounting hole. The mounting hole of the upper dental appliance is sleeved on the support rod.

[0010] Preferably, the driving assembly includes a pump body, in which a piston capable of sliding horizontally is arranged. The piston divides the pump body into a pneumatic chamber and a liquid discharge chamber. The pneumatic chamber is used to control the expansion and contraction of the collection chamber, and the liquid discharge chamber is used to suck saliva through the collection chamber.

[0011] Preferably, a feed port and a discharge port are arranged on the liquid discharge chamber, and one-way valves are arranged on both the feed port and the discharge port. The liquid suction pipe is connected to the feed port, and the liquid discharge pipe is connected to the discharge port.

[0012] Preferably, a first mounting port and a second mounting port are arranged on the pneumatic chamber, and solenoid valves are arranged on both the first mounting port and the second mounting port. One end of the first pipeline is connected to the first mounting port, and the other end of the first pipeline is provided with a third branch and a fourth branch, and the third branch and the fourth branch are respectively communicated with the air chambers of the upper dental tray and the lower dental tray.

[0013] Preferably, the driving assembly further includes a rotary drive motor, bevel gears, a bevel gear disk, a turntable, a connecting rod, a fixed shaft and a drive rod. The rotary drive motor is located beside the pump body. The bevel gear is sleeved on the output shaft of the rotary drive motor. The bevel gear disk is rotatably arranged beside the rotary drive motor. The bevel gear is meshed and connected with the bevel gear disk. The turntable is sleeved on the bevel gear disk. The fixed shaft is vertically fixedly connected to the turntable. The drive rod is sleeved on the piston and is slidably matched with the pump body. The connecting rod is located between the drive rod and the turntable, and both ends of the connecting rod are hinged to the drive rod and the fixed shaft respectively.

[0014] Preferably, the driving assembly includes a housing. A plurality of sliding rods are arranged at the bottom of the mounting disk. The sliding rods are all slidably matched with the housing, and an elastic member is arranged between the bottom of the mounting disk and the housing. An installation groove is arranged on the housing below the trigger. A control board capable of sliding in the height direction is arranged in the installation groove. A proximity sensor is located on the control board. A screw rod is arranged at the bottom of the control board, and the screw rod is in threaded cooperation with the installation groove. A cover plate is arranged at the top of the installation groove.

[0015] Preferably, a U-shaped tongue depressor is arranged on the upper dental tray, and a through hole through which liquid can pass is arranged on the tongue depressor.

[0016] The beneficial effects of the present invention compared with the prior art are: 1. The present invention places the oral support in the patient's oral cavity. Saliva is introduced into the liquid suction tube through the liquid drainage holes. The liquid suction tube is connected to the driving component. The driving component sucks the saliva by generating negative pressure (such as a negative pressure pump or a plunger pump) and transports it to the collection bag through the drainage tube. The setting of the oral support avoids the use of the head-mounted fixator in the prior art, significantly improves the comfort of the patient, and at the same time ensures the stability and effectiveness of the device. Through the cooperation of the proximity sensor and the trigger, the automatic monitoring and alarm function of the saliva liquid level in the collection bag is realized, eliminating the need for the nursing staff to manually check frequently, significantly reducing the nursing intensity, and improving the nursing efficiency, especially suitable for scenarios requiring long-term care.

[0017] 2. The present invention sets the oral support as an upper dental brace and a lower dental brace, and a collection cavity is arranged inside them, which can accommodate the saliva secreted in the patient's oral cavity, facilitating the formation of negative pressure at the liquid drainage holes to suck the saliva. The upper and lower dental braces can be customized according to the patient's teeth, perfectly fitting the shape of the patient's teeth, being comfortable to wear, not causing additional pressure, and since the dental braces are usually made of soft materials such as silicone, they are not only easy to clean but also can be reused, reducing the patient's expenditure on nursing costs, avoiding the use of disposable materials, and reducing waste.

[0018] 3. The U-shaped tongue depressor of the present invention can better fit the shape of the patient's tongue. Together with the expansion of the collection cavity, it can effectively stimulate the tongue. The through-hole design on the tongue depressor allows the liquid to pass through smoothly, facilitating the collection and drainage of saliva, avoiding the influence on the operation or causing discomfort to the patient due to saliva retention. By restricting the movement of the tongue and guiding the flow of saliva, the accumulation of liquid in the oral cavity is reduced. The combination of the through-hole and the U-shaped tongue depressor not only improves the functionality but also has a simple structure, is easy to manufacture and clean, is conducive to reducing costs and ensuring hygienic requirements. Brief Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of a self-alarming salivation collection and metering device.

[0020] Figure 2 is an exploded view of the oral support in a self-alarming salivation collection and metering device.

[0021] Figure 3 is a three-dimensional structural schematic diagram of the oral support in a self-alarming salivation collection and metering device.

[0022] Figure 4 is Figure 3 the enlarged view of part A in

[0023] Figure 5 is a sectional structural schematic diagram of the oral support in a self-alarming salivation collection and metering device.

[0024] Figure 6 It is a schematic cross-sectional structure diagram of a self-alarming salivation collection and metering device.

[0025] Figure 7 is Figure 6 The enlarged view of part B in

[0026] Figure 8 It is a schematic cross-sectional structure diagram of a driving component in a self-alarming salivation collection and metering device.

[0027] Figure 9 It is a schematic perspective structure diagram of a part of the driving component in a self-alarming salivation collection and metering device.

[0028] Figure 10 It is a front view of a pump body in a self-alarming salivation collection and metering device.

[0029] The reference numerals in the figure are: 1. Driving component; 11. Liquid suction pipe; 111. First branch; 112. Second branch; 12. Drain pipe; 13. Mounting plate; 131. Trigger; 132. Sliding rod; 1321. Elastic member; 14. Proximity sensor; 15. Pump body; 151. Piston; 1511. Driving rod; 152. Drain cavity; 1521. Feed port; 1522. Discharge port; 1523. Check valve; 153. Pneumatic cavity; 1531. First mounting port; 1532. Second mounting port; 1533. Solenoid valve; 16. Rotary drive motor; 161. Bevel gear; 17. Bevel gear disk; 171. Turntable; 1711. Fixed shaft; 172. Connecting rod; 18. Housing; 181. Mounting groove; 1811. Control board; 1812. Screw; 1813. Cover plate; 2. Oral support part; 21. Upper dental brace; 211. Collection cavity; 2111. Air column; 212. Air cavity; 213. First pipeline; 2131. Third branch; 2132. Fourth branch; 214. Mounting hole; 215. Tongue depressor; 2151. Through hole; 22. Lower dental brace; 221. Support rod; 23. Drain hole; 3. Collection bag. Specific embodiments

[0030] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0031] Such as Figures 1 to 9Shown: An autonomous alarm type salivation collection and metering device, comprising a driving component 1, an oral cavity support part 2 and a collection bag 3. The oral cavity support part 2 is located inside the patient's oral cavity, and a plurality of liquid discharge holes 23 are arranged on the oral cavity support part 2; at the top of the driving component 1, there is an installation disk 13 that can slide in the height direction, and the installation disk 13 is elastically connected to the driving component 1; the collection bag 3 is placed on the installation disk 13; on the driving component 1, there is a liquid suction pipe 11 communicated with the liquid discharge holes 23 and a liquid discharge pipe 12 communicated with the collection bag 3; the liquid suction pipe 11 is used to suck the saliva on the periphery of the oral cavity support part 2 into the driving component 1 through the liquid suction pipe 11, and discharge the saliva from the liquid discharge pipe 12 into the collection bag 3 through the driving component 1; at the bottom of the installation disk 13, there is a trigger 131, and at the top of the driving component 1, there is a proximity sensor 14. When the saliva in the collection bag 3 reaches the warning position, under the action of gravity, the installation disk 13 slides down, making the trigger 131 close to the proximity sensor 14 to trigger an alarm signal.

[0032] Long-term care patients often suffer from oral infections or skin inflammations due to saliva accumulation. This device reduces the time that the oral mucosa and skin are exposed to saliva through its efficient saliva removal function, reducing the risk of nursing-related complications. For patients with disabilities or those who are long-term dependent on nursing, timely saliva cleaning can avoid discomfort and embarrassment caused by saliva flowing or spilling, help patients maintain personal hygiene, safeguard the dignity of patients, and improve their overall quality of life.

[0033] By placing the oral cavity support part 2 inside the patient's oral cavity, saliva is introduced into the liquid suction pipe 11 through the liquid discharge holes 23. The liquid suction pipe 11 is connected to the driving component 1, and the driving component 1 (such as a negative pressure pump or a plunger pump) sucks the saliva by generating negative pressure and transports it into the collection bag 3 through the liquid discharge pipe 12.

[0034] The setting of the oral cavity support part 2 avoids the use of head-mounted fixators in the prior art, significantly improving the comfort of patients, while ensuring the stability and effectiveness of the device.

[0035] During the process of the driving component 1 collecting saliva, the collection bag 3 is gradually filled and its weight gradually increases. The collection bag 3 is placed on the installation disk 13 that is elastically connected to the driving component 1. When the saliva increases to a certain amount, the installation disk 13 slowly slides down under the action of gravity. The trigger 131 arranged at the bottom of the installation disk 13 will have a reduced distance from the proximity sensor 14 due to the sliding. When the proximity sensor 14 detects that the trigger 131 is approaching, it triggers an alarm signal. The alarm signal can be connected to the hospital nursing system, and by emitting a beeping sound or triggering a call function, it timely reminds the nursing staff to replace the collection bag 3, thus avoiding the situation of saliva overflow or patient discomfort caused by nursing delay.

[0036] Through the above method, the automatic management of saliva collection and care is realized, which not only improves the care efficiency, but also ensures the comfort and safety of patients.

[0037] Through the cooperation of the proximity sensor 14 and the trigger 131, the device realizes the automatic monitoring and alarm function of the saliva liquid level in the collection bag 3, eliminating the need for nursing staff to frequently check manually, significantly reducing the nursing intensity, improving the nursing efficiency, and being particularly suitable for scenarios requiring long-term care. By adopting the mounting plate 13 elastically connected to the driving component 1, the liquid level in the collection bag 3 is monitored by using the trigger 131 and the proximity sensor 14, avoiding the use of expensive or complex sensor technologies, reducing the manufacturing cost, and at the same time reducing the maintenance difficulty of the device, making it more suitable for popularization in medical institutions or home care scenarios.

[0038] Saliva is quickly collected into the collection bag 3 through the liquid suction pipe 11 and the drain pipe 12, preventing saliva from accumulating in the oral cavity and reducing the risk of patient asphyxia, being particularly suitable for patients with disabilities or those who cannot swallow independently.

[0039] The use of the collection bag 3 ensures that saliva is centrally processed, avoiding saliva dripping and polluting the bedsheet, clothes or the surrounding environment, keeping the area around the patient clean and hygienic, and reducing the nursing cleaning burden.

[0040] As Figures 1 to 5 and Figure 8 shown: The oral support part 2 includes an upper dental brace 21 and a lower dental brace 22. Collection cavities 211 are provided inside both the upper dental brace 21 and the lower dental brace 22. A plurality of drain holes 23 are respectively arranged on the inner walls of the collection cavities 211 of the upper dental brace 21 and the lower dental brace 22. One end of the liquid suction pipe 11 close to the oral support part 2 is provided with a first branch 111 and a second branch 112, and the first branch 111 and the second branch 112 are respectively communicated with the collection cavities 211 of the upper dental brace 21 and the lower dental brace 22.

[0041] By setting the oral support part 2 as the upper dental brace 21 and the lower dental brace 22 and providing the collection cavities 211 inside them, it can accommodate the saliva secreted in the patient's oral cavity, facilitating the formation of negative pressure by the drain holes 23 to suck the saliva. Since the inner side of the teeth is close to multiple salivary glands and the saliva secretion volume is relatively large, by evenly distributing the plurality of drain holes 23 on the inner walls of the collection cavities 211, it can ensure that the saliva is quickly introduced into the collection cavities 211, effectively improving the saliva collection efficiency and reducing the discomfort caused by the accumulation of saliva in the oral cavity.

[0042] One end of the suction tube 11 near the oral cavity support part 2 is divided into a first branch 111 and a second branch 112, which are respectively communicated with the collection cavities 211 of the upper dental appliance 21 and the lower dental appliance 22, enabling saliva to be independently collected through the upper and lower two sets of shunt paths. Aiming at the problem that the drainage holes 23 may be blocked by secretions in the oral cavity, the shunt setting can effectively avoid the blockage that may occur during single-path drainage, significantly improving the stability and reliability of saliva collection.

[0043] The upper dental appliance 21 and the lower dental appliance 22 are both provided with collection cavities 211, which helps to more evenly distribute the saliva collection load and reduce the risk of saliva accumulation at a single site. By timely shunting and sucking saliva, the need for nursing staff to frequently adjust the equipment is reduced, thus improving the convenience and efficiency of nursing work.

[0044] In addition, the upper dental appliance 21 and the lower dental appliance 22 can be customized according to the patient's teeth, perfectly fitting the shape of the patient's teeth, being comfortable to wear and not causing additional pressure. And since the dental appliances are usually made of soft materials such as silicone, they are not only easy to clean but also can be reused, which can reduce the patient's expenditure on nursing costs, avoid using disposable materials, and reduce waste.

[0045] As Figures 1 to 5 and Figure 8 shown: The collection cavities 211 of the upper dental appliance 21 and the lower dental appliance 22 are both elastic structures that can expand in the vertical direction. A plurality of telescopic air columns 2111 are arranged in the collection cavity 211. An air cavity 212 is arranged beside the collection cavity 211. One end of the air column 2111 is fixedly connected to the collection cavity 211, and the other end of the air column 2111 is communicated with the air cavity 212. A first pipe 213 communicating with the drive assembly 1 is arranged on the air cavity 212.

[0046] The drive assembly 1 can inflate and exhaust the air cavity 212 through the first pipe 213. Since the air column 2111 can be telescopic and the collection cavity 211 is an elastic structure (similar to an airbag) that can expand in the vertical direction, the length of the air column 2111 can be changed by inflating and exhausting, enabling the collection cavity 211 to expand or contract through the air column 2111, thereby slightly changing the size of the patient's oral cavity. This function helps to optimize the saliva drainage path according to the patient's needs, improve the efficiency of saliva collection, and avoid discomfort or safety hazards caused by saliva accumulation in the oral cavity. The telescopic movement of the air column 2111 changes the shape of the collection cavity 211 and the spatial distribution inside the oral cavity, enabling saliva to flow more naturally towards the drainage holes 23, reducing the retention time of saliva in the oral cavity, thereby further improving the saliva collection effect and reducing the intensity of nursing work.

[0047] By expanding or contracting the collection cavity 211 and moderately changing the pressure environment inside the oral cavity, it can stimulate or inhibit the patient's salivary glands to a certain extent, thereby reducing the excessive secretion of saliva and reducing the patient's nursing needs.

[0048] Since the collection chamber 211 is made of elastic material and the air column 2111 can expand and contract, it will not cause obvious compression on the patient's teeth or the interior of the oral cavity when adjusting the oral cavity space, maintaining a high level of wearing comfort. At the same time, the slight expansion and contraction can also simulate the natural state of oral movement, avoiding discomfort caused by long-term wearing.

[0049] The linkage structure between the air column 2111 and the air chamber 212 is precisely controlled by the drive assembly 1 to ensure a stable and reliable adjustment process. The elastic structure also enables the collection chamber 211 to adapt to the personalized needs of patients, providing a safer and more effective saliva management solution.

[0050] As Figures 1 to 5 shown: Both the upper dental appliance 21 and the lower dental appliance 22 are U-shaped structures. An installation hole 214 is provided at the end of the upper dental appliance 21, and a support rod 221 adapted to the installation hole 214 is provided on the lower dental appliance 22. The installation hole 214 of the upper dental appliance 21 is sleeved on the support rod 221.

[0051] By providing the installation hole 214 at the end of the upper dental appliance 21 and the support rod 221 at the end of the lower dental appliance 22. The upper dental appliance 21 is sleeved on the support rod 221 through the installation hole 214 to form a rotational connection. So that the upper dental appliance 21 can achieve a certain range of rotational adjustment under the action of the support rod 221.

[0052] This rotational connection allows the upper dental appliance 21 to adjust the angle according to the actual situation of the patient's oral cavity, ensuring that the dental appliance can fit the patient's teeth and oral cavity shape better when worn, improving the adaptability and comfort of the device. At the same time, the rotational setting provides a more flexible structural support for the flow and guidance of saliva when the collection chamber 211 expands.

[0053] The rotational function of the upper dental appliance 21 can better fit the patient's oral cavity structure, avoid unnecessary compression on the oral soft tissues caused by the dental appliance, and enhance the comfort of long-term wearing. The rotational connection takes into account both flexibility and stability and can adapt to the diverse needs of patients.

[0054] As Figure 1 、 Figures 6 to 10 shown: The drive assembly 1 includes a pump body 15. A piston 151 that can slide horizontally is provided inside the pump body 15. The piston 151 divides the pump body 15 into a pneumatic chamber 153 and a drainage chamber 152. The pneumatic chamber 153 is used to control the expansion and contraction of the collection chamber 211, and the drainage chamber 152 is used to suck saliva through the collection chamber 211.

[0055] The pump body 15 is divided into a pneumatic chamber 153 and a liquid discharge chamber 152 by a piston 151, and multiple functions are realized through a single pump body 15. The pneumatic chamber 153 realizes the expansion and contraction of the collection chamber 211 by adjusting the length of the air column 2111, further optimizing the guiding path of saliva, reducing saliva retention, and enhancing the comfort of the patient; the liquid discharge chamber 152 ensures that saliva can be quickly and stably transported into the collection bag 3 through negative pressure suction.

[0056] The combination of the pneumatic chamber 153 and the liquid discharge chamber 152 not only simplifies the device structure, but also reduces the manufacturing cost, improves the integration and maintenance convenience of the device, meeting the requirements of high efficiency and economy in clinical applications.

[0057] As Figure 1 、 Figures 6 to 10 shown: The liquid discharge chamber 152 is provided with a feed port 1521 and a discharge port 1522, and one-way valves 1523 are provided on both the feed port 1521 and the discharge port 1522. The liquid suction pipe 11 is connected to the feed port 1521, and the liquid discharge pipe 12 is connected to the discharge port 1522.

[0058] The liquid discharge chamber 152 generates negative pressure through the movement of the piston 151 to realize the suction and transportation of saliva. When the piston 151 moves away from the liquid discharge chamber 152, negative pressure is generated in the liquid discharge chamber 152, causing the one-way valve 1523 on the feed port 1521 to open and at the same time preventing the backflow of the discharge port 1522. The liquid suction pipe 11 introduces saliva from the collection chamber 211 into the liquid discharge chamber 152. As the piston 151 moves towards the liquid discharge chamber 152, the one-way valve 1523 on the discharge port 1522 opens, and saliva is discharged into the collection bag 3 through the liquid discharge pipe 12. At the same time, the one-way valve 1523 on the feed port 1521 closes to prevent saliva from flowing back into the liquid suction pipe 11. This cyclic process ensures that saliva can be continuously and stably sucked from the patient's oral cavity and transported to the collection bag 3.

[0059] Through the reciprocating movement of the piston 151, the feeding and discharging processes are completed separately in time, effectively improving the efficiency of saliva suction and discharge and avoiding the occurrence of fluid mixing or blockage. Through the cooperation of the liquid suction pipe 11, the liquid discharge pipe 12 and the one-way valve 1523, a closed fluid passage is formed, which not only reduces the complexity of device cleaning and maintenance, but also reduces the risk of liquid leakage or contamination.

[0060] The liquid discharge chamber 152 can achieve precise negative pressure control through the movement of the piston 151. In cooperation with the action of the one-way valve 1523, it can efficiently suck saliva in the oral cavity. Even in the case of a large amount of saliva or a complex suction path, it can maintain the smoothness of the fluid and the stability of transportation, avoiding the discomfort caused by saliva accumulation, and at the same time reducing the frequency of nursing staff adjusting the device, improving the convenience and efficiency of nursing work.

[0061] AsFigure 1 , Figures 6 to 10 As shown in Figures 6 to 10 , a first mounting port 1531 and a second mounting port 1532 are provided on the pneumatic chamber 153. Solenoid valves 1533 are provided on both the first mounting port 1531 and the second mounting port 1532. One end of the first pipeline 213 is connected to the first mounting port 1531, and a third branch 2131 and a fourth branch 2132 are provided at the other end of the first pipeline 213. The third branch 2131 and the fourth branch 2132 are respectively communicated with the air chambers 212 of the upper dental tray 21 and the lower dental tray 22.

[0062] When it is necessary to inflate the air chambers 212 of the upper dental tray 21 and the lower dental tray 22, the piston 151 slides away from the pneumatic chamber 153. At this time, the solenoid valve 1533 of the second mounting port 1532 is opened, and the solenoid valve 1533 of the first mounting port 1531 is closed, so that gas can enter the pneumatic chamber 153. When the piston 151 slides towards the pneumatic chamber 153 side, the solenoid valve 1533 of the first mounting port 1531 is opened, and the solenoid valve 1533 of the second mounting port 1532 is closed. At this time, the gas in the pneumatic chamber 153 enters the first pipeline 213 through the first mounting port 1531 and is introduced into the air chambers 212 of the upper dental tray 21 and the lower dental tray 22 through the first pipeline 213. Through the third branch 2131 and the fourth branch 2132 at the end of the first pipeline 213, the gas in the first pipeline 213 can be respectively introduced into the air chambers 212 of the upper dental tray 21 and the lower dental tray 22, so that the air column 2111 extends, thereby realizing the expansion control of the collection chamber 211.

[0063] When it is necessary to realize the contraction of the air chamber 212, according to the above process, the opening and closing states of the solenoid valves 1533 of the first mounting port 1531 and the second mounting port 1532 are adjusted in reverse, so as to gradually discharge the gas in the air chamber 212 and realize the contraction control of the collection chamber 211.

[0064] Through the precise switching of the solenoid valves 1533 of the first mounting port 1531 and the second mounting port 1532 and the reciprocating movement of the piston 151, the efficient control of the inflation and exhaust processes of the air chamber 212 is realized, ensuring the smooth and stable expansion and contraction operations of the collection chamber 211.

[0065] The pneumatic cavity 153 realizes forward and reverse control through the two-way solenoid valve 1533, which can quickly adjust the expansion and contraction state of the air cavity 212 of the upper braces 21 and the lower braces 22, meet the personalized needs of different patients, and improve the adaptability of the equipment. The first pipeline 213 is divided into a third branch 2131 and a fourth branch 2132, and the gas is evenly distributed to the air cavity 212 of the upper braces 21 and the lower braces 22, avoiding the problem of insufficient inflation or over-inflation of a single air cavity 212, thereby improving the patient's wearing comfort. The movement of the piston 151 combined with the control of the solenoid valve 1533 realizes the automated air cavity 212 adjustment process, without the need for frequent manual adjustments, reducing the burden of nursing work and improving the convenience of operation. The precise control of the solenoid valve 1533 avoids the risks caused by over-inflation or exhaust, ensures the safety and stability of the equipment during operation, and further enhances the patient's experience.

[0066] like Figure 1 , Figures 6 to 10 As shown: the driving assembly 1 also includes a rotary driving motor 16, a bevel gear 161, a bevel toothed disc 17, a rotating disc 171, a connecting rod 172, a fixed shaft 1711 and a driving rod 1511. The rotary driving motor 16 is located beside the pump body 15. The bevel gear 161 is sleeved on the output shaft of the rotary driving motor 16. The bevel toothed disc 17 is rotatably arranged beside the rotary driving motor 16. The bevel gear 161 is meshed and connected with the bevel toothed disc 17. The rotating disc 171 is sleeved on the bevel toothed disc 17. The fixed shaft 1711 is vertically fixedly connected to the rotating disc 171. The driving rod 1511 is sleeved on the piston 151, and the driving rod 1511 is slidably matched with the pump body 15. The connecting rod 172 is located between the driving rod 1511 and the rotating disc 171. The two ends of the connecting rod 172 are respectively hinged to the driving rod 1511 and the fixed shaft 1711.

[0067] By starting the rotary drive motor 16, the output shaft of the rotary drive motor 16 drives the bevel gear 161 connected thereto. The rotation of the bevel gear 161 drives the bevel gear plate 17 meshing therewith, and the rotation of the bevel gear plate 17 drives the rotation of the rotating disk 171 connected thereto, and the rotation of the rotating disk 171 drives the movement of the fixed shaft 1711. Since the fixed shaft 1711 is vertically fixedly connected to the rotating disk 171, the fixed shaft 1711 can rotate around the axis of the rotating disk 171, thereby driving the movement of the connecting rod 172 hinged thereto. Since the other end of the connecting rod 172 is hinged to the driving rod 1511, and the driving rod 1511 is slidably matched with the pump body 15, the movement of the connecting rod 172 drives the driving rod 1511 to do reciprocating linear motion along the axis of the pump body 15. Since the driving rod 1511 is sleeved on the piston 151 and the driving rod 1511 and the piston 151 are fixedly connected, the piston 151 is driven to slide in the horizontal direction, thereby realizing the reciprocating motion of the piston 151 inside the pump body 15 .

[0068] Through the reciprocating motion of the piston 151, the pneumatic chamber 153 and the liquid discharge chamber 152 in the pump body 15 alternately realize the processes of gas compression and liquid suction. The expansion and contraction of the pneumatic chamber 153 are used to drive the oral cavity support part 2; the liquid discharge chamber 152 sucks and discharges saliva by forming a negative pressure.

[0069] Through the combination of the rotary drive motor 16, the bevel gear 161 and the bevel gear disk 17, the rotary motion is effectively converted into the linear reciprocating motion of the piston 151, realizing the efficient transmission of the drive system, and ensuring the stable operation of the pneumatic chamber 153 and the liquid discharge chamber 152 of the pump body 15. Through reasonable layout, the overall structure of the pump body 15 is more compact, occupying less space, and is suitable for medical equipment or other application scenarios with high space requirements.

[0070] As Figure 1 、 Figures 6 to 10 shown: The drive assembly 1 includes a housing 18. A plurality of sliding rods 132 are provided at the bottom of the mounting plate 13. The sliding rods 132 are all slidably engaged with the housing 18. And an elastic member 1321 is provided between the bottom of the mounting plate 13 and the housing 18. An installation groove 181 is provided on the housing 18 below the trigger 131. A control plate 1811 capable of sliding in the height direction is provided in the installation groove 181. The proximity sensor 14 is located on the control plate 1811. A screw rod 1812 is provided at the bottom of the control plate 1811. The screw rod 1812 is threadedly engaged with the installation groove 181. A cover plate 1813 is provided at the top of the installation groove 181.

[0071] Through the threaded engagement of the screw rod 1812 with the installation groove 181, it can drive the control plate 1811 to slide along the height direction of the installation groove 181 when rotating, so as to realize the height adjustment of the proximity sensor 14 to adapt to different scenarios or requirements, and avoid the problem of early warning caused by the fatigue of the elastic member 1321 after long-term use. The position of the proximity sensor 14 can be accurately positioned through height adjustment to ensure the accuracy of induction, thereby improving the performance and reliability of the control system.

[0072] When the trigger 131 contacts or approaches the control plate 1811, the proximity sensor 14 can sense in real time and send out a signal to realize the control or feedback function of the device, ensuring the timeliness and accuracy of the action. The plurality of sliding rods 132 at the bottom of the mounting plate 13 are slidably engaged with the housing 18. At the same time, the elastic member 1321 provides a buffering effect, enabling the mounting plate 13 to maintain stability under external forces, absorb vibrations or impacts, and protect the internal components.

[0073] The housing 18 provides overall support for the drive assembly 1. The sliding movement of the control board 1811 and the rotation of the screw 1812 within the installation groove 181 are both guided and protected by the structure of the housing 18. The cover plate 1813 is located at the top of the installation groove 181, which can not only limit the movement range of the control board 1811 but also prevent dust or foreign objects from entering, ensuring the cleanliness and stable operation of the system.

[0074] Through the reasonable layout of each component, especially the combination of the sliding rod 132 and the elastic member 1321, the overall structure of the drive assembly 1 is more compact, occupies less space, and is suitable for use in a variety of complex environments. The modular design of the installation groove 181, the screw 1812, and the control board 1811 makes the disassembly, assembly, and maintenance of the device more convenient, reducing the maintenance difficulty and cost. The housing 18 is also provided with a display screen for displaying the saliva flow rate and buttons for controlling each component.

[0075] As Figures 1 to 5 shown: The upper dental tray 21 is provided with a U-shaped tongue depressor 215, and the tongue depressor 215 is provided with through holes 2151 through which liquid can pass.

[0076] The tongue is an important participant in the swallowing action. By pressing the tongue or the root of the tongue, the swallowing reflex can be induced, enabling the patient to actively swallow saliva, thereby reducing saliva accumulation. Moderate tongue stimulation may affect the activity of the salivary glands. In particular, by mechanically stimulating to reduce the free movement of the tongue, it is possible to slightly inhibit the production of saliva.

[0077] The U-shaped tongue depressor 215 can better fit the shape of the patient's tongue. Cooperating with the expansion of the collection cavity 211 can effectively stimulate the tongue. The design of the through holes 2151 on the tongue depressor 215 allows the liquid to pass smoothly, which helps in the collection and discharge of saliva, avoiding affecting the operation or causing discomfort to the patient due to saliva retention. By restricting the movement of the tongue and guiding the flow of saliva, the accumulation of liquid in the oral cavity is reduced. The combination of the through holes 2151 and the U-shaped tongue depressor 215 not only improves the functionality but also has a simple structure, is easy to manufacture and clean, which is beneficial to reducing costs and ensuring hygiene requirements.

[0078] The above embodiments only represent one or several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An autonomous alarm type salivation collection and metering device, comprising a driving assembly (1), an oral cavity support part (2) and a collection bag (3), characterized in that, The oral support part (2) is located inside the patient's oral cavity, and a plurality of liquid discharge holes (23) are provided on the oral support part (2); The top of the driving component (1) is provided with a mounting disc (13) that can slide in the height direction, and the mounting disc (13) is elastically connected to the driving component (1); The collection bag (3) is placed on the mounting disc (13); The driving component (1) is provided with a liquid suction pipe (11) communicated with the liquid discharge holes (23) and a liquid discharge pipe (12) communicated with the collection bag (3); The liquid suction pipe (11) is used to suck the saliva on the periphery of the oral support part (2) into the driving component (1) through the liquid suction pipe (11), and discharge the saliva from the liquid discharge pipe (12) into the collection bag (3) through the driving component (1); A trigger (131) is provided at the bottom of the mounting disc (13), and a proximity sensor (14) is provided at the top of the driving component (1). When the saliva in the collection bag (3) reaches the warning position, the mounting disc (13) slides down under the action of gravity, so that the trigger (131) approaches the proximity sensor (14) to trigger an alarm signal.

2. The self-alarming salivation collection and metering device according to claim 1, wherein The oral support part (2) includes an upper dental brace (21) and a lower dental brace (22). Collection cavities (211) are provided inside both the upper dental brace (21) and the lower dental brace (22). A plurality of liquid discharge holes (23) are respectively provided on the inner walls of the collection cavities (211) of the upper dental brace (21) and the lower dental brace (22). One end of the liquid suction pipe (11) close to the oral support part (2) is provided with a first branch (111) and a second branch (112), and the first branch (111) and the second branch (112) are respectively communicated with the collection cavities (211) of the upper dental brace (21) and the lower dental brace (22).

3. The self-alarming salivation collection and metering device according to claim 2, characterized in that The collection cavities (211) of the upper dental brace (21) and the lower dental brace (22) are both elastic structures that can expand in the vertical direction. A plurality of telescopic air columns (2111) are provided inside the collection cavities (211). An air cavity (212) is provided beside the collection cavity (211). One end of the air column (2111) is fixedly connected to the collection cavity (211), and the other end of the air column (2111) is communicated with the air cavity (212). A first pipe (213) communicated with the driving component (1) is provided on the air cavity (212).

4. The self-alarming salivation collection and metering device according to claim 2, characterized in that, Both the upper dental brace (21) and the lower dental brace (22) are U-shaped structures. The end of the upper dental brace (21) is provided with a mounting hole (214), and the lower dental brace (22) is provided with a support rod (221) adapted to the mounting hole (214). The mounting hole (214) of the upper dental brace (21) is sleeved on the support rod (221).

5. The self-alarming salivation collection and metering device according to claim 3, characterized in that, The driving component (1) includes a pump body (15). A piston (151) that can slide in the horizontal direction is provided inside the pump body (15). The piston (151) divides the pump body (15) into a pneumatic cavity (153) and a liquid discharge cavity (152). The pneumatic cavity (153) is used to control the expansion and contraction of the collection cavity (211), and the liquid discharge cavity (152) is used to suck saliva through the collection cavity (211).

6. The self-alarming salivation collection and metering device according to claim 5, wherein, The liquid discharge cavity (152) is provided with a feed inlet (1521) and a discharge outlet (1522). One-way valves (1523) are provided on both the feed inlet (1521) and the discharge outlet (1522). The liquid suction pipe (11) is connected to the feed inlet (1521), and the liquid discharge pipe (12) is connected to the discharge outlet (1522).

7. The self-alarming salivation collecting and metering device according to claim 5, characterized in that, The pneumatic cavity (153) is provided with a first mounting port (1531) and a second mounting port (1532). Solenoid valves (1533) are provided on both the first mounting port (1531) and the second mounting port (1532). One end of the first pipe (213) is connected to the first mounting port (1531), and the other end of the first pipe (213) is provided with a third branch (2131) and a fourth branch (2132). The third branch (2131) and the fourth branch (2132) are respectively communicated with the air cavities (212) of the upper dental brace (21) and the lower dental brace (22).

8. An autonomous alarm type salivation collection and metering device according to claim 5, characterized in that, The drive assembly (1) further includes a rotary drive motor (16), a bevel gear (161), a bevel gear disk (17), a turntable (171), a connecting rod (172), a fixed shaft (1711) and a drive rod (1511). The rotary drive motor (16) is located beside the pump body (15). The bevel gear (161) is sleeved on the output shaft of the rotary drive motor (16). The bevel gear disk (17) is rotatably arranged beside the rotary drive motor (16). The bevel gear (161) is meshed and connected with the bevel gear disk (17). The turntable (171) is sleeved on the bevel gear disk (17). The fixed shaft (1711) is vertically and fixedly connected to the turntable (171). The drive rod (1511) is sleeved on the piston (151), and the drive rod (1511) is slidably matched with the pump body (15). The connecting rod (172) is located between the drive rod (1511) and the turntable (171). The two ends of the connecting rod (172) are respectively hinged to the drive rod (1511) and the fixed shaft (1711).

9. The self-alarming salivation collection and metering device according to claim 1, characterized in that, The drive assembly (1) includes a housing (18). A plurality of sliding rods (132) are provided at the bottom of the mounting plate (13). The sliding rods (132) are all slidably matched with the housing (18), and an elastic member (1321) is provided between the bottom of the mounting plate (13) and the housing (18). An installation groove (181) is provided on the housing (18) below the trigger (131). A control board (1811) capable of sliding in the height direction is provided in the installation groove (181). The proximity sensor (14) is located on the control board (1811). A screw rod (1812) is provided at the bottom of the control board (1811). The screw rod (1812) is in threaded cooperation with the installation groove (181). A cover plate (1813) is provided at the top of the installation groove (181).

10. An autonomous alarm type salivation collection and metering device according to claim 3, characterized in that, The upper dental brace (21) is provided with a U-shaped tongue depressor (215). A through hole (2151) through which liquid can pass is provided on the tongue depressor (215).

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