An oral care device for bedridden patients

Abstract

The application discloses a bed patient oral cavity nursing device and relates to the technical field of oral cavity nursing.The device comprises a liquid storage tank, the inside of which is divided into two independent cavities by a partition plate, namely a liquid storage cavity for storing nursing liquid and a liquid discharge cavity for containing waste liquid; a flushing unit arranged in the liquid storage cavity for outputting the nursing liquid; a liquid discharge unit arranged in the liquid discharge cavity for sucking and discharging the waste liquid; and a biting piece fixedly connected to the outer side wall of the liquid storage tank through a support.The brush and the nozzle are integrated, the nursing liquid is directly sprayed from the nozzle embedded in the root of the brush to the tooth surface, the structure enables physical friction and hydraulic flushing to be simultaneously performed, the brush is responsible for loosening dental plaque and bacteria plaque, the pressure liquid flow is responsible for flushing away the dental plaque and the bacteria plaque and deeply cleaning the tooth gaps, and when flushing, the suction pump can immediately suck away the waste liquid through the water suction pipe, so that the safety of the nursing process is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of oral care technology, specifically to an oral care device for bedridden patients. Background Technology

[0002] Oral care is an important component of basic clinical nursing care, playing a crucial role in maintaining patients' oral health and preventing nosocomial infections. Bedridden patients, especially those who are critically ill, recovering from surgery, or have swallowing difficulties due to neurological disorders, are unable to independently perform routine oral hygiene activities such as brushing and rinsing due to limited mobility and must rely on medical staff or caregivers for assisted care.

[0003] Existing technologies mainly focus on the design of simple oral irrigators or negative pressure suction oral care brushes. Oral irrigators typically consist of a liquid reservoir, a manual or electric pressure pump, and an irrigating nozzle, enabling a continuous supply of care solution. However, they lack mechanized teeth brushing functionality and still rely on caregivers to perform secondary operations by holding the brush, resulting in low functional integration. Negative pressure suction oral care brushes combine the brush head with a suction channel, allowing for the suction of waste liquid while brushing. However, the layout design of the brush head and suction port does not fully consider the characteristics of oral anatomy. Suction efficiency is limited by the degree of matching between the opening position and the area of ​​oral fluid accumulation. Furthermore, the brush heads are mostly of a fixed shape, which cannot adapt to the differences in the curvature of the teeth and the degree of mouth opening of different patients, thus limiting their versatility.

[0004] Therefore, the present invention proposes an oral care device for bedridden patients. Summary of the Invention

[0005] The purpose of this invention is to provide an oral care device for bedridden patients to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an oral care device for bedridden patients, comprising: The liquid storage tank is divided into two independent chambers by a partition: a storage chamber for storing nursing fluid and a drain chamber for containing waste liquid. A rinsing unit, located within the liquid storage chamber, is used to output the nursing solution; A draining unit is installed inside the draining chamber for sucking up and discharging waste liquid; The occlusal element is fixedly connected to the outer wall of the reservoir by a bracket, and is used to open and keep the patient's upper and lower teeth in a separated state; A storage slot is provided on the side wall of the liquid storage tank facing the engagement member; A bidirectional screw is installed in the storage groove and rotates vertically. Its upper and lower sections are provided with external threads with opposite directions of rotation. At least two cleaning components are respectively threaded to the upper and lower sections of the bidirectional screw and can move closer or further apart under the drive of the bidirectional screw, for brushing the upper and lower teeth in the patient's oral cavity.

[0007] Furthermore, a replenishment port is provided at the top of the liquid storage chamber.

[0008] Furthermore, the rinsing unit includes a rinsing pump fixedly installed inside the liquid storage chamber, and a liquid guide pipe is installed at the outlet of the rinsing pump. The other end of the liquid guide pipe is installed on the cleaning assembly.

[0009] Furthermore, the drainage unit includes a suction pump installed inside the drainage chamber. The suction pump has a suction pipe installed at its inlet, its output end is connected to the inlet of the suction pump, and its input end extends to one side of the cleaning assembly for suctioning waste liquid from the oral cavity. The bottom of the drainage chamber is provided with a drain outlet, and the outlet of the suction pump is connected to the drain outlet through a conduit to promptly drain the rinsing fluid from the patient's mouth.

[0010] Furthermore, the water suction pipe is configured as a plastic flexible tube.

[0011] Furthermore, the bite member has bite grooves on both the upper and lower sides that are adapted to the arrangement of human teeth, and the bite member is made of medical plastic.

[0012] Furthermore, the cleaning assembly includes an adjusting plate rotatably mounted on a bidirectional screw, an arc-shaped frame fixedly mounted on the outer end of the adjusting plate, and a brush for brushing teeth provided on the side wall of the arc-shaped frame; The arc-shaped frame has a cavity inside that communicates with the liquid guide tube, and multiple nozzles communicating with the cavity are equally spaced on the side wall of the arc-shaped frame within the coverage area of ​​the brush.

[0013] Furthermore, the threads of the upper and lower sections of the bidirectional screw are arranged in opposite directions, and a drive motor is installed at the top of the bidirectional thread, which is mounted on the top of the liquid storage tank.

[0014] Furthermore, at least one guide rod is fixedly installed on the side wall of the liquid storage tank facing the arc-shaped frame, and a guide plate that slides with the guide rod is fixedly connected to the arc-shaped frame. The guide plate has a guide hole for the guide rod to pass through.

[0015] Furthermore, a handheld bracket is fixedly installed on the side wall of the liquid storage tank away from the engagement member.

[0016] The present invention has at least the following beneficial effects: 1. This invention features an independent drainage chamber and a continuously operating suction pump. While the rinsing pump delivers the nursing solution into the oral cavity, the suction pump immediately removes waste liquid mixed with contaminants through a suction tube, maintaining a consistently low fluid level in the patient's mouth. This dynamic balance mechanism of simultaneous rinsing and suction eliminates the possibility of fluid accumulation and inflow into the throat, significantly improving the safety of the nursing process.

[0017] 2. The cleaning assembly of this invention integrates a brush and a nozzle into one unit, with the cleaning solution sprayed directly onto the tooth surface from the nozzle embedded in the base of the brush. This structure allows physical friction and water rinsing to occur simultaneously; the brush loosens plaque and tartar, while the pressurized liquid flow washes them away and cleans deep into the interdental spaces. Compared to traditional brushing followed by rinsing or single-point rinsing methods, this synergistic effect achieves deep cleaning of the tooth surface and gingival sulcus.

[0018] 3. This invention utilizes a combination of a bidirectional screw and a drive motor, allowing the upper and lower cleaning components to move synchronously closer or further apart. This design enables the device to flexibly adapt to different patients' oral cavity sizes and dental arch widths, achieving precise fit without the need to replace the brush head. With the constraint of the guide rod and guide plate, the cleaning components remain stable during movement, ensuring the accuracy and consistency of the brushing action.

[0019] 4. The bite plate is made of medical-grade plastic and features occlusal grooves that conform to the dental arch, ensuring even force distribution during biting without any cold or foreign body sensation. The brush and curved frame are designed to follow the natural curvature of the dental arch, avoiding harsh impact. Furthermore, because waste fluid is promptly removed, patients do not need to frequently sit up to spit or endure the discomfort of a full mouth full of liquid, resulting in a more comfortable and peaceful overall experience. Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the cleaning component structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the overall structure of the present invention.

[0021] Figure label: 1. Liquid storage tank; 2. Liquid storage chamber; 3. Drainage chamber; 4. Engaging component; 5. Collection slot; 6. Bidirectional screw; 7. Liquid replenishment port; 8. Flushing pump; 9. Liquid guide pipe; 10. Suction pump; 11. Suction pipe; 12. Drain outlet; 13. Engaging groove; 14. Adjusting plate; 15. Arc frame; 16. Brush; 17. Nozzle; 18. Drive motor; 19. Guide rod; 20. Guide plate; 21. Handheld frame. Detailed Implementation

[0022] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0023] Please see Figures 1-3 The present invention provides a technical solution: an oral care device for bedridden patients, including a liquid storage tank 1. The liquid storage tank 1 has two independent cavities, namely a liquid storage cavity 2 and a liquid drainage cavity 3. The liquid storage cavity 2 is used to store rinsing liquid and is equipped with a rinsing unit. The liquid drainage cavity 3 is equipped with a drainage unit. The independent design of the liquid storage cavity 2 and the liquid drainage cavity 3, together with the suction pump 10 working in real time, can remove waste liquid in time while rinsing, avoiding the risk of aspiration or choking that may occur when the patient is lying supine, and maintaining the dryness and comfort of the oral cavity; A bracket is fixedly installed on the outer wall of the liquid storage tank 1. A bite piece 4 is installed at the other end of the bracket. The bite piece 4 is used to separate the patient's upper and lower teeth. The bite groove 13 on the bite piece 4 conforms to the human tooth arrangement. When the patient bites it, it can naturally open the upper and lower teeth, freeing up operating space for the cleaning components, and also preventing the patient from biting the nurse's fingers or damaging the instruments in a tense state. A storage groove 5 is provided on the side wall of the liquid storage tank 1 facing the occlusal member 4. A bidirectional screw 6 is rotatably installed in the storage groove 5. Cleaning components are rotatably installed on both the upper and lower sections of the bidirectional screw 6. The bidirectional screw 6 drives the two sets of cleaning components to simultaneously brush the patient's upper and lower teeth. With the help of the care solution sprayed from inside the brush 16, a simultaneous brushing and rinsing cleaning mode is achieved, which is conducive to removing dirt between the teeth.

[0024] In this embodiment, the top of the liquid storage chamber 2 is provided with a replenishment port 7. Positioning the replenishment port 7 at the top conforms to the natural principle of gravity-based filling. Caregivers can use a syringe, measuring cup, or tubing to directly inject the nursing solution into the chamber without the need for additional pressurization equipment or complex docking structures.

[0025] Regarding the technical solution of this embodiment, the rinsing unit includes a rinsing pump 8 fixedly installed inside the liquid storage chamber 2, and a liquid guide pipe 9 is installed at the outlet of the rinsing pump 8. The other end of the liquid guide pipe 9 is installed on the cleaning assembly. The rinsing pump 8 serves as the power source, converting the nursing solution in the reservoir 2 into a liquid flow with a certain velocity. Guided by the liquid guide tube 9, this liquid is directly delivered to the cleaning component inside the mouth. This design ensures that the nursing solution can accurately reach the areas that need cleaning, avoiding ineffective loss of liquid during delivery, so that every drop of nursing solution is used for rinsing and cleaning. Furthermore, by installing the rinsing pump 8 directly inside the reservoir 2, the internal space of the housing is fully utilized, resulting in a neat appearance of the entire device without any messy external power modules. It should be further explained that the flushing pump 8, the fluid guide tube 9, and the cleaning components form a closed fluid path from the reservoir 2 to the patient's mouth. This closed structure effectively prevents the nursing solution from being exposed to air during delivery, reducing the risk of contamination from external bacteria and dust. At the same time, it also prevents the solution from splashing onto the patient's body or bed during delivery, maintaining a dry and clean operating environment.

[0026] Regarding the technical solution of this embodiment, the draining unit includes a suction pump 10 installed inside the draining chamber 3, and a suction pipe 11 is installed at the inlet of the suction pump 10. The suction pipe 11 is located on one side of the cleaning assembly. The bottom of the drainage chamber 3 is provided with a drain outlet 12. The outlet of the suction pump 10 is connected to the drain outlet 12 through a conduit to promptly drain the rinsing fluid from the patient's mouth. Bedridden patients are usually in a supine position. If a large amount of rinsing fluid accumulates in the mouth, it is very easy for it to flow into the throat and cause choking, or even lead to aspiration pneumonia. In this embodiment, when using the device, the patient's head is turned to one side, and then the suction tube 11 is placed at the bottom of the mouth after the head is turned. In this way, the waste liquid after rinsing will flow downward under the action of gravity. At this time, the suction pump 10 can remove the waste liquid mixed with dirt in time through the suction tube 11 while rinsing, effectively maintaining a low liquid level in the mouth and eliminating the risk of waste liquid retention and aspiration from the source. Furthermore, the drain outlet 12 at the bottom of the drainage chamber 3 provides a convenient outlet for waste liquid disposal. After the treatment is completed, there is no need to empty the entire device or disassemble the pipeline. Simply connect the conduit to the waste liquid collection container, and the waste liquid can be discharged through the drain outlet 12. This design not only avoids splashing and polluting the environment during the emptying process, but also simplifies the cleaning process and reduces the workload of nursing staff.

[0027] Regarding the technical solution of this embodiment, the suction tube 11 is set as a plastic hose. The plastic hose has good flexibility. When one end of it is placed near the cleaning component in the patient's mouth, the caregiver can easily bend the angle of the hose according to the patient's mouth opening, tooth arrangement and tongue position, so that it is accurately positioned in the low-lying area of ​​the mouth or the area where waste liquid is easy to accumulate, ensuring that the suction point is always in the most effective position. Furthermore, compared to rigid plastic or metal tubes, flexible tubing is much softer. During aspiration, if the patient's mouth moves slightly or the tubing accidentally touches sensitive areas such as the gums or sublingual mucosa, the tubing can deform to cushion the impact, reducing the risk of punctures or scratches to delicate oral tissues. This is especially suitable for critically ill patients with fragile oral mucosa or a tendency to bleed.

[0028] Regarding the technical solution of this embodiment, the upper and lower sides of the biting piece 4 are provided with occlusal grooves 13 adapted to human teeth. The biting piece 4 is made of medical plastic material. The occlusal grooves 13 on the upper and lower sides match the arrangement shape of the patient's teeth. When the patient bites the biting piece 4, the contact area between the teeth and the occlusal grooves 13 increases, and the biting force is evenly distributed to the entire dental arch. This surface contact replaces point contact or line contact, avoiding the soreness of the masticatory muscles caused by the mandible being suspended for a long time or the force being concentrated, so that the patient can maintain a relatively relaxed state during the nursing process. Furthermore, after the occlusal element 4 opens the upper and lower teeth, it forms a stable operating space on the buccal side and between the teeth. This allows the brush 16 and nozzle 17 of the cleaning component to move freely on the tooth surface, while isolating soft tissues such as the buccal mucosa and tongue outside the operating area, effectively avoiding accidental injury to the oral cavity wall during brushing. At the same time, the occlusal groove 13, which is adapted to the shape of the teeth, can limit and fix the upper and lower teeth. After the patient bites down, the teeth are embedded in the groove, forming a stable interlocking relationship, effectively preventing the occlusal element 4 from sliding back and forth or left and right in the oral cavity. This stability ensures that the cleaning component connected to the occlusal element 4 can always be aligned with the correct position of the teeth, ensuring the accuracy of brushing and rinsing.

[0029] It should be noted that in this embodiment, the rigid occlusal component 4 can be replaced with a flat medical silicone airbag. The airbag is connected to an external inflation ball or miniature air pump via a thin tube. The surface of the airbag can be provided with anti-slip textures or shallow grooves. In the uninflated state, the flat and soft airbag is placed on the buccal side of the patient's mouth or between the anterior teeth. Then, air is slowly inflated into the airbag through an external air source. The airbag expands and thickens, gently opening the upper and lower teeth. The opening height can be precisely controlled by the inflation volume. Using flexible contact instead of rigid support is more friendly to patients with limited mouth opening, trismus, or loose teeth. At the same time, the airbag can adapt to the irregular shape of the patient's oral cavity, with more even force distribution and extremely high comfort.

[0030] Regarding the technical solution of this embodiment, the cleaning assembly includes an adjusting plate 14 rotatably mounted on a bidirectional screw 6, an arc-shaped frame 15 fixedly mounted on the outer end of the adjusting plate 14, and a brush 16 mounted on the side wall of the arc-shaped frame 15 for brushing teeth. The curved frame 15 has an internal cavity, and the liquid guide tube 9 is connected to the cavity to deliver the rinsing liquid from the storage chamber 2 into the curved frame 15. Multiple nozzles 17 are evenly spaced on the side wall of the curved frame 15, and the nozzles 17 are embedded in the brush 16. This embedding of the nozzles 17 into the brush 16 ensures that the spray point of the cleaning solution coincides with the brushing point of the brush 16. This means that while the brush 16 physically rubs and loosens plaque and tartar on the tooth surface, the cleaning solution can directly flush away these contaminants from the root. This synergistic effect of brushing and rinsing avoids the residue that may result from brushing first and then rinsing, achieving true simultaneous deep cleaning. Furthermore, the liquid jet from the root of the brush 16 has a certain pressure, allowing it to penetrate into the gaps between teeth and the gingival sulcus, areas difficult for the brush 16 to reach, and flushing out hidden soft plaque and food debris through water pressure. This combination of water-based cleaning and physical cleaning by the brush 16 compensates for the shortcomings of relying solely on brush bristle friction. Furthermore, the curved frame 15 is designed to conform to the natural curvature of the dental arch, allowing the bristles 16 to comfortably wrap around the tooth surface without any sharp edges hitting the gums or cheeks. At the same time, the gentle rinsing solution seeps directly from between the bristles, rather than being sprayed directly into the throat or sensitive gum area like a water gun, reducing the patient's discomfort and fear.

[0031] It should be noted that in this embodiment, the arc-shaped frame 15 with multiple conventional nozzles 17 can be replaced with an arc-shaped nozzle integrated with a micro piezoelectric ceramic vibrating plate. The nozzle surface is covered with a layer of extremely fine fiber bristles. After the cleaning solution is delivered to the nozzle, the piezoelectric ceramic plate vibrates at high frequency, breaking the liquid into fine mist particles. These droplets diffuse and penetrate all surfaces of the teeth and gums through the fiber bristles covering them. Because the droplets produced by this method are extremely fine, the liquid consumption is low, and it can evenly cover the entire oral cavity. For extremely dry oral environments, this moisturizing method is gentler and is particularly suitable for patients with fragile oral mucosa or bleeding points.

[0032] In this embodiment, the threads of the upper and lower sections of the bidirectional screw 6 are arranged in opposite directions, and a drive motor 18 is installed at the top of the bidirectional threads. The drive motor 18 is mounted on the top of the liquid storage tank 1. By machining two external threads with opposite directions on one section of the screw, a single drive motor 18 can simultaneously drive the upper and lower cleaning components to move in opposite directions—either towards or away from each other. This design avoids the use of two independent motors and transmission systems, simplifying the power and control logic from the root. Furthermore, since the upper and lower adjusting plates 14 are mounted on the same screw and driven by the same motor, their movements are absolutely synchronized. This ensures that the brushing actions of the upper and lower teeth are always symmetrical and coordinated, allowing the upper and lower dental arches to be cleaned simultaneously, avoiding cleaning blind spots caused by asynchronous movements where one side is in place while the other side is not.

[0033] Regarding the technical solution of this embodiment, a guide rod 19 is fixedly installed on the side wall of the liquid storage tank 1 facing the arc-shaped frame 15. A guide plate 20 that cooperates with the guide rod 19 is fixedly installed on the side wall of the arc-shaped frame 15. The guide plate 20 is sleeved on the guide rod 19 and slides up and down along the guide rod 19. The cleaning assembly is only connected to the bidirectional screw 6 through the adjusting plate 14, which is a single-sided cantilever support. When brushing teeth, the reaction force on the brush 16 can easily cause the cleaning assembly to rotate around the screw axis, causing the brush 16 to deviate from the tooth surface. The cooperation between the guide rod 19 and the guide plate 20 provides a second constraint point for the cleaning assembly, restricting its motion freedom to vertical translation, completely eliminating deflection and tilting. During brushing, the friction between the brush 16 and the teeth will generate a torsional torque on the cleaning assembly. Without a guide structure, this torque will be entirely borne by the thread of the bidirectional screw 6, which can easily lead to unilateral wear of the thread during long-term operation, affecting the transmission accuracy. The guide plate 20 transmits torque to the guide rod 19, allowing the screw to bear only the driving thrust, significantly extending the service life of the transmission system. Simultaneously, the guide rod 19 has a smooth, circular surface, precisely fitted with the inner hole of the guide plate 20 to form a sliding bearing pair. This fit ensures that the cleaning assembly operates smoothly and without wobbling or jamming during lifting and lowering, providing the patient with the sensation of the brush 16 gently gliding over the teeth, rather than vibrating or scraping, thus enhancing the comfort of the treatment.

[0034] Regarding the technical solution of this embodiment, a handheld device 21 is fixedly installed on the side wall of the reservoir 1 away from the occlusal member 4. The handheld device 21 provides the caregiver with a clear and ergonomic grip position. During delicate intraoral procedures, a stable grip can effectively counteract the slight vibrations generated by the irrigation pump 8 and suction pump 10 during operation, while preventing hand slippage. This stability ensures that the cleaning components and occlusal member 4 inserted into the patient's mouth can be accurately positioned, reducing accidental contact caused by hand tremors or unstable grip.

[0035] It should be noted that in this embodiment, the suction pump 10, flushing pump 8, drive motor 18 and other electrical equipment are all powered by the battery installed at the bottom of the liquid storage tank 1. Of course, they can also be powered by an external plug, but this embodiment does not limit them.

[0036] The principle and process of using this invention: First, prepare by opening the infusion port 7 at the top of the reservoir 2 and injecting sufficient oral care solution into the reservoir 2. Check that the drainage chamber 3 is empty to ensure that there is space to hold waste liquid. At the same time, confirm that the infusion tube 9 and the suction tube 11 are securely connected. Then, the device is placed into the patient's mouth and basic protection is activated. The nurse holds the hand-held frame 21 to stabilize the device with one hand and assists the patient to open their mouth with the other hand, guiding the patient to bite down on the bite piece 4 so that their upper and lower teeth are respectively inserted into the bite groove 13, thereby opening the mouth to a stable working position. Then, the suction pump 10 is activated first, so that the suction tube 11 port starts working and forms a negative pressure in the local area of ​​the mouth, preparing for the subsequent immediate suction of waste liquid. Next, the drive motor 18 is started, and the bidirectional screw 6 rotates. The upper and lower cleaning components are driven to move smoothly closer to each other along the guide rod 19 using the two sections of opposite spiral threads. This allows the brushes 16 on the arc frame 15 to gently adhere to the surfaces of the upper and lower teeth. Then, the rinsing pump 8 is started, and the nursing solution is delivered to the internal cavity of the arc frame 15 through the liquid guide tube 9. It is then sprayed evenly from multiple nozzles 17 embedded at the base of the brushes 16. At this time, the device achieves the simultaneous operation of physical friction of the brushes 16 and pressure rinsing of the nursing solution. Meanwhile, the suction pump 10 continues to work, immediately sucking the brushed dirt and waste liquid into the drainage chamber 3 to ensure that the patient's mouth is always dry. Nursing staff can control the drive motor 18 to move the cleaning components back and forth on the tooth surface to complete a thorough brushing by controlling the forward and reverse rotation of the drive motor 18. Finally, after cleaning, first turn off the rinsing pump 8 to stop the liquid supply, but keep the suction pump 10 running for a few seconds to remove any remaining liquid in the mouth. Then, operate the drive motor 18 to reverse, retract the cleaning component from the tooth surface and completely return it to the storage slot 5 on the side of the reservoir 1. Finally, guide the patient to loosen the bite piece 4 and remove the entire device. The caregiver opens the drain outlet 12 at the bottom of the drainage chamber 3 to drain the collected waste liquid and cleans and disinfects the bite piece 4, brush 16, suction tube 11, and other contact parts as necessary for the next use.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances. When an element is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another element, it may be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An oral care device for bedridden patients, characterized in that, include: The liquid storage tank (1) is divided into two independent chambers by a partition, namely the liquid storage chamber (2) for storing nursing fluid and the drain chamber (3) for containing waste liquid; A rinsing unit is provided in the liquid storage chamber (2) for discharging the nursing solution; A draining unit is installed in the draining chamber (3) for sucking up and discharging waste liquid; The occlusal element (4) is fixedly connected to the outer wall of the reservoir (1) by a bracket, and is used to open and keep the patient's upper and lower teeth in a separated state; A storage slot (5) is provided on the side wall of the liquid storage tank (1) facing the engagement member (4); A bidirectional screw (6) is installed in the storage groove (5) in a vertical direction, and its upper and lower sections are provided with external threads with opposite directions of rotation; At least two cleaning components are respectively threaded to the upper and lower sections of the bidirectional screw (6) and can move closer or further apart under the drive of the bidirectional screw (6) for brushing the upper and lower teeth in the patient's oral cavity.

2. The oral care device for bedridden patients according to claim 1, characterized in that: The top of the liquid storage chamber (2) is provided with a liquid replenishment port (7).

3. The oral care device for bedridden patients according to claim 2, characterized in that: The rinsing unit includes a rinsing pump (8) fixedly installed inside the liquid storage chamber (2), and a liquid guide pipe (9) is installed at the outlet of the rinsing pump (8). The other end of the liquid guide pipe (9) is installed on the cleaning assembly.

4. The oral care device for bedridden patients according to claim 2, characterized in that: The drainage unit includes a suction pump (10) installed inside the drainage chamber (3). The suction pump (10) has a suction pipe (11) installed at its inlet. Its output end is connected to the inlet of the suction pump (10), and its input end extends to one side of the cleaning assembly for suctioning waste liquid in the oral cavity. The bottom of the drainage chamber (3) is provided with a drain outlet (12), and the outlet of the suction pump (10) is connected to the drain outlet (12) through a conduit to promptly drain the rinsing fluid from the patient's mouth.

5. The oral care device for bedridden patients according to claim 4, characterized in that: The water suction pipe (11) is a plastic hose.

6. The oral care device for bedridden patients according to claim 5, characterized in that: The bite member (4) has bite grooves (13) on both the upper and lower sides that are adapted to the arrangement of human teeth, and the bite member (4) is made of medical plastic.

7. The oral care device for bedridden patients according to claim 5, characterized in that: The cleaning assembly includes an adjusting plate (14) rotatably mounted on a bidirectional screw (6), an arc-shaped frame (15) fixedly mounted on the outer end of the adjusting plate (14), and a brush (16) for brushing teeth provided on the side wall of the arc-shaped frame (15). The arc-shaped frame (15) has a cavity inside that communicates with the liquid guide tube (9), and on the side wall of the arc-shaped frame (15), within the coverage area of ​​the brush (16), a plurality of nozzles (17) that communicate with the cavity are provided at equal intervals.

8. The oral care device for bedridden patients according to claim 7, characterized in that: The threads of the upper and lower sections of the bidirectional screw (6) are arranged in opposite directions, and a drive motor (18) is installed at the top of the bidirectional thread. The drive motor (18) is installed at the top of the liquid storage tank (1).

9. The oral care device for bedridden patients according to claim 8, characterized in that: At least one guide rod (19) is fixedly installed on the side wall of the liquid storage tank (1) facing the arc frame (15). A guide plate (20) that slides with the guide rod (19) is fixedly connected to the arc frame (15). A guide hole is provided on the guide plate (20) for the guide rod (19) to pass through.

10. An oral care device for bedridden patients according to claim 9, characterized in that: A handheld bracket (21) is fixedly installed on the side wall of the liquid storage tank (1) away from the engagement member (4).

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