Negative pressure type oral secretion dynamic collecting device

Abstract

The invention discloses a negative pressure type oral secretion dynamic collecting device, and relates to the technical field of medical instruments, the negative pressure type oral secretion dynamic collecting device comprises a base, the top end of the base is clamped with a collecting tank, the outer side of the collecting tank is sleeved with a sealing cover, the top end of the sealing cover is provided with a convenient dismounting and collecting mechanism, and the convenient dismounting and collecting mechanism comprises a vertical cylinder; according to the invention, the structure is scientific and reasonable, the use is safe and convenient, a convenient dismounting and collecting mechanism is arranged, through the cooperation of the vertical cylinder, the collecting pipe, the elliptical mask and the occlusion ring, a patient can conveniently open the mouth to bite the occlusion ring, the position of the elliptical mask is fixed, and the operation is convenient. The mouth of a patient can be supported, the collecting tube can be conveniently inserted into the oral cavity, meanwhile, the wearing stability is further improved through the elastic band, the collecting tube can be stabilized in the oral cavity, and subsequent collection of secretions is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically relates to a negative-pressure type dynamic oral secretion collection device. Background Art

[0002] When a patient undergoes a bronchoscopy, there is a relatively large amount of oral secretion, which will not only cause the growth of bacteria, increase the risk of infection, but also cause the secretion to be accidentally aspirated into the airway, leading to asphyxia. Therefore, it is necessary to use a suction device to collect the secretion. For example, an existing anti-backflow oral continuous negative pressure suction device, with the application number (CN 202221107666.3), can effectively prevent the secretion in the inlet tube from flowing back into the oral cavity.

[0003] However, when this patent is used and worn, the stability and adaptability of the pipeline are insufficient, and it is easy to shake due to the movement of the patient. When extracting the secretion, it will spill out, and it is not convenient to disassemble and replace. Therefore, in view of these situations, to avoid the above technical problems, it is necessary to provide a negative-pressure type dynamic oral secretion collection device to overcome the defects in the prior art. Summary of the Invention

[0004] The present invention provides a negative-pressure type dynamic oral secretion collection device, which can effectively solve the problems of insufficient stability and adaptability of the pipeline during use and wearing, easy shaking due to the movement of the patient, spilling during the extraction of secretion, and inconvenience in disassembly and replacement proposed in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A negative-pressure type dynamic oral secretion collection device includes a base, a collection tank is snap-connected to the top of the base, a sealing cover is sleeved outside the collection tank, and a convenient disassembly and collection mechanism is arranged at the top of the sealing cover. The convenient disassembly and collection mechanism includes a vertical cylinder;

[0006] A vertical cylinder is snap-connected to one side of the top of the sealing cover. A collection tube is connected inside the vertical cylinder. A threaded cylinder is sleeved outside the collection tube. One end of the threaded cylinder is snap-connected to an oval mask, and a bite ring is snap-connected to one end of the oval mask;

[0007] A rotating cylinder is sleeved outside the threaded cylinder. A splicing plate is movably sleeved outside the rotating cylinder. Extension frames are snap-connected to both ends of the splicing plate. A winding box is snap-connected inside the extension frame. A winding rod is rotatably connected inside the winding box, and an anti-slip ring is threadedly sleeved outside the winding rod;

[0008] An elastic band is connected to the outside of the winding rod, and extension channels are symmetrically connected to the outside of the winding box.

[0009] According to the above technical solution, the bottom end of the vertical cylinder penetrates through the top end of the sealing cover, the outer side of the collecting pipe is threadedly connected to the inner wall of the vertical cylinder, the clamping ring is oval, and the clamping ring is made of food-grade rubber.

[0010] According to the above technical solution, the outer side of the threaded cylinder is threadedly connected to the inner wall of the rotating cylinder, the splicing plate is an arc-shaped plate, and one end of the splicing plate fits with one end of the oval mask.

[0011] According to the above technical solution, one end of the winding rod penetrates through one end of the winding box, an anti-slip pad is clamped at a position corresponding to one side of the anti-slip ring at one end of the winding box, and the elastic band passes through an extension channel and is connected to the inner wall of another extension channel.

[0012] According to the above technical solution, an air extraction negative pressure adjustment mechanism is arranged at the top position on the outer side of the sealing cover, and the air extraction negative pressure adjustment mechanism includes an air extraction cylinder;

[0013] An air extraction cylinder is installed at the top position on the outer side of the sealing cover, an air extraction pipe is connected to one end on the outer side of the air extraction cylinder, an exhaust pipe is connected to the other end on the outer side of the air extraction cylinder, the bottom end of the air extraction cylinder is movably connected with an air extraction rod, and a piston plate is clamped at the top end of the air extraction rod;

[0014] A rotating rod is rotatably connected to the top end of the air extraction cylinder, a turntable is clamped at the top end of the rotating rod, positioning pins are symmetrically connected to the top end of the turntable through threads, a rotating sleeve is clamped at the bottom end of the rotating rod, communicating pipes are symmetrically clamped on the inner wall of the rotating sleeve, retaining rings are clamped on the inner walls of the two communicating pipes, fixing plates are clamped on the inner walls of the two retaining rings, a sliding rod is movably connected inside the fixing plate, a gasket is clamped at one end of the sliding rod, a tension spring is clamped between the gasket and the fixing plate, and a sealing plate is clamped at the other end of the sliding rod.

[0015] According to the above technical solution, the other end of the air extraction pipe is embedded inside the sealing cover, the air extraction pipe and the exhaust pipe correspond to each other, and the outer side of the piston plate fits with the inner wall of the air extraction cylinder.

[0016] According to the above technical solution, positioning holes are symmetrically opened at the top end of the air extraction cylinder, the bottom end of the positioning pin is embedded inside the positioning hole, the outer side of the rotating sleeve is rotatably connected to the inner wall of the air extraction cylinder, and the sealing plates inside the two communicating pipes are uniformly located on the same side.

[0017] According to the above technical solution, a limit anti-overflow mechanism is arranged on the outer side of the vertical cylinder, and the limit anti-overflow mechanism includes a convex block;

[0018] Convex blocks are equidistantly clamped on the outer side of the vertical cylinder. An active rod is movably connected inside the convex block, and a plug plate is clamped at the bottom end of the active rod. A traction ring is clamped at the position corresponding to the outer side of the vertical cylinder at the top end of the active rod. An electric push rod is installed at the top end of the traction ring. A splicing ring is clamped at the top end of the electric push rod. Touch switches are equidistantly clamped at the bottom end of the splicing ring;

[0019] A floating ring is movably sleeved on the outer side of the active rod at the position corresponding to the outer side of the vertical cylinder. A top rod is clamped at the top end of the floating ring. A top block is clamped at the position corresponding to the top of the traction ring at the top end of the top rod.

[0020] According to the above technical solution, there are four active rods in total. The outer diameter of the plug plate is larger than the inner diameter of the vertical cylinder. Both the electric push rod and the touch switch are powered by an external power supply, and the signal output end of the touch switch is connected to the input end of the electric push rod.

[0021] According to the above technical solution, the inner walls of the traction ring and the floating ring are both attached to the outer side of the vertical cylinder. There are four top blocks in total, and the installation positions of the top blocks correspond to the installation positions of the touch switches.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is scientific and reasonable, and it is safe and convenient to use:

[0023] 1. A convenient disassembly, assembly and collection mechanism is provided. Through the cooperation of the vertical cylinder, the collection tube, the oval mask and the bite ring, it is convenient for the patient to open the mouth and bite the bite ring, which not only fixes the position of the oval mask, but also supports the patient's mouth, facilitating the insertion of the collection tube into the oral cavity. At the same time, the elastic band is used to further improve the wearing stability, so that the collection tube can be stable inside the oral cavity, facilitating the subsequent collection of secretions and reducing shaking to prevent spilling. Through the cooperation of the winding rod and the anti-slip ring, the length of the elastic band can be adjusted according to the needs of different patients to prevent injury to the patient and improve the adaptability;

[0024] Through the cooperation of the threaded cylinder, the rotating cylinder and the splicing plate, it is convenient to combine the collection tube, the oval mask, the bite ring and the splicing plate together to ensure the effect of wearing and liquid extraction, and at the same time, it can be disassembled conveniently to replace the collection tube, the oval mask and the bite ring to prevent cross-infection.

[0025] 2. An air extraction negative pressure adjustment mechanism is provided. Through the cooperation of the extraction rod, the piston plate, the air extraction cylinder, the air extraction pipe and the exhaust pipe, it is convenient to manually extract and discharge the gas between the collection tank and the sealing cover according to the needs, forcing a negative pressure to be formed inside the collection tank, facilitating the extraction of the patient's oral secretions into the collection tank, improving the convenience and the collection effect of the secretions;

[0026] Through the cooperation of the retaining ring, fixed plate, sliding rod, gasket, tension spring and sealing plate, when pumping air, only the gas inside the collection tank is pumped out, and the external gas is not sucked into the air extraction cylinder. When exhausting, the gas will not flow back into the collection tank, but is directly discharged by the exhaust pipe, ensuring the pumping efficiency.

[0027] Through the cooperation of the turntable and the rotating rod, it is convenient to drive the rotating sleeve to rotate half a circle, changing the positions of the two communicating pipes, and facilitating the reverse feeding of external gas into the sealing cover. According to the needs of different patients, the air pressure inside the collection tank is adjusted to reduce the harm caused to the patients.

[0028] 3. A limit anti-overflow mechanism is provided. Through the cooperation of the floating ring, push rod and top block, when the secretion liquid inside the collection tank is too much, the floating ring, push rod and top block are pushed to rise, so as to contact the touch switch, control the electric push rod to contract, pull the traction ring, movable rod and plug plate to rise, seal the vertical cylinder, and timely stop the extraction of the secretion, preventing the secretion inside the collection tank from being too much and the liquid level being too high, entering the inside of the air extraction pipe and causing blockage, making it inconvenient to adjust the air pressure inside the collection tank, thus affecting the subsequent pumping effect, and easily polluting the air extraction pipe and the air extraction cylinder, affecting the subsequent use.

[0029] To sum up, through the cooperation of the convenient disassembly and collection mechanism, the air extraction negative pressure adjustment mechanism and the limit anti-overflow mechanism, it is convenient to wear the air extraction device for patients. At the same time, it can be adjusted according to different patients, improving the adaptability and ensuring the stability of the device when worn. Furthermore, during negative pressure air extraction, the shaking is reduced, preventing the phenomenon of spilling. And it can be disassembled and replaced according to needs to prevent cross-infection. In addition, it can prevent the phenomenon that the secretion collected inside the device is too much, avoiding overflow and causing pollution. Brief Description of the Drawings

[0030] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0031] In the drawings:

[0032] Figure 1 is the structural schematic diagram of the present invention;

[0033] Figure 2 is the installation structural schematic diagram of the threaded barrel of the present invention;

[0034] Figure 3 is the structural schematic diagram of the convenient disassembly and collection mechanism of the present invention;

[0035] Figure 4 is the installation structural schematic diagram of the winding rod of the present invention;

[0036] Figure 5 It is a schematic diagram of the installation structure of the exhaust pipe of the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the exhaust negative pressure regulating mechanism of the present invention;

[0038] Figure 7 It is the present invention Figure 6 Schematic diagram of the structure of area A in;

[0039] Figure 8 It is a schematic diagram of the structure of the limit anti - overflow mechanism of the present invention.

[0040] Reference numerals in the figure: 1, base; 2, collection tank; 3, sealing cover;

[0041] 4, convenient disassembly and collection mechanism; 401, vertical cylinder; 402, collection pipe; 403, threaded cylinder; 404, oval mask; 405, bite ring; 406, rotating cylinder; 407, splicing plate; 408, extension frame; 409, winding box; 410, winding rod; 411, anti - slip ring; 412, elastic band; 413, extension channel;

[0042] 5, exhaust negative pressure regulating mechanism; 501, exhaust cylinder; 502, exhaust pipe; 503, exhaust pipe; 504, pull rod; 505, piston plate; 506, rotating rod; 507, turntable; 508, positioning pin; 509, rotating sleeve; 510, connecting pipe; 511, retaining ring; 512, fixing plate; 513, sliding rod; 514, gasket; 515, tension spring; 516, sealing plate;

[0043] 6, limit anti - overflow mechanism; 601, convex block; 602, movable rod; 603, plug plate; 604, traction ring; 605, electric push rod; 606, splicing ring; 607, touch switch; 608, floating ring; 609, ejector rod; 610, ejector block. Specific embodiments

[0044] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0045] Embodiment: As Figure 1-8As shown in the figure, the present invention provides a technical solution, a negative-pressure type dynamic oral secretion collection device, which includes a base 1. A collection tank 2 is clamped at the top of the base 1. A sealing cover 3 is sleeved outside the collection tank 2. A convenient disassembly and collection mechanism 4 is arranged at the top of the sealing cover 3. The convenient disassembly and collection mechanism 4 includes a vertical cylinder 401, a collection tube 402, a threaded cylinder 403, an oval mask 404, a bite ring 405, a rotating cylinder 406, a splicing plate 407, an extension frame 408, a winding box 409, a winding rod 410, an anti-slip ring 411, an elastic band 412 and an extension channel 413;

[0046] A vertical cylinder 401 is clamped at one side of the top of the sealing cover 3. A collection tube 402 is connected inside the vertical cylinder 401. A threaded cylinder 403 is sleeved outside the collection tube 402. An oval mask 404 is clamped at one end of the threaded cylinder 403. And a bite ring 405 is clamped at one end of the oval mask 404. In order to facilitate the support of the patient's oral cavity, the bottom end of the vertical cylinder 401 penetrates through the top of the sealing cover 3. The outer side of the collection tube 402 is threadedly connected with the inner wall of the vertical cylinder 401. The bite ring 405 is oval, and the bite ring 405 is made of food-grade rubber;

[0047] A rotating cylinder 406 is sleeved outside the threaded cylinder 403. A splicing plate 407 is movably sleeved outside the rotating cylinder 406. In order to facilitate disassembly and assembly, the outer side of the threaded cylinder 403 is threadedly connected with the inner wall of the rotating cylinder 406. The splicing plate 407 is an arc-shaped plate, and one end of the splicing plate 407 is attached to one end of the oval mask 404. Both ends of the splicing plate 407 are clamped with extension frames 408. A winding box 409 is clamped inside the extension frames 408. A winding rod 410 is rotatably connected inside the winding box 409. And an anti-slip ring 411 is threadedly sleeved outside the winding rod 410;

[0048] An elastic band 412 is connected to the outside of the winding rod 410. Extension channels 413 are symmetrically connected to the outside of the winding box 409. In order to facilitate the winding of the elastic band 412, one end of the winding rod 410 penetrates through one end of the winding box 409. A non-slip pad is clamped at the position corresponding to one side of the anti-slip ring 411 at one end of the winding box 409. The elastic band 412 passes through one extension channel 413 and is connected to the inner wall of the other extension channel 413;

[0049] An air extraction negative pressure adjustment mechanism 5 is arranged at the top position outside the sealing cover 3. The air extraction negative pressure adjustment mechanism 5 includes an air extraction cylinder 501, an air extraction pipe 502, an exhaust pipe 503, an air extraction rod 504, a piston plate 505, a rotating rod 506, a turntable 507, a positioning pin 508, a rotating sleeve 509, a connecting pipe 510, a retaining ring 511, a fixing plate 512, a sliding rod 513, a gasket 514, a tension spring 515 and a sealing plate 516;

[0050] At the top position on the outer side of the sealing cover 3, an air extraction cylinder 501 is installed. One end on the outer side of the air extraction cylinder 501 is connected to an air extraction pipe 502, and the other end on the outer side of the air extraction cylinder 501 is connected to an exhaust pipe 503. The bottom end of the air extraction cylinder 501 is movably connected to an air extraction rod 504, and a piston plate 505 is clamped at the top end of the air extraction rod 504. In order to improve the convenience of air extraction, the other end of the air extraction pipe 502 is embedded inside the sealing cover 3. The air extraction pipe 502 and the exhaust pipe 503 correspond to each other, and the outer side of the piston plate 505 fits with the inner wall of the air extraction cylinder 501;

[0051] The top end of the air extraction cylinder 501 is rotatably connected to a rotating rod 506. A turntable 507 is clamped at the top end of the rotating rod 506. Positioning pins 508 are symmetrically connected to the top end of the turntable 507 through threads. A rotating sleeve 509 is clamped at the bottom end of the rotating rod 506. Connecting pipes 510 are symmetrically clamped inside the inner wall of the rotating sleeve 509. Retaining rings 511 are clamped inside the inner walls of the two connecting pipes 510, and fixing plates 512 are clamped inside the inner walls of the two retaining rings 511. A sliding rod 513 is movably connected inside the fixing plate 512. One end of the sliding rod 513 is clamped with a gasket 514, and a tension spring 515 is clamped between the gasket 514 and the fixing plate 512. A sealing plate 516 is clamped at the other end of the sliding rod 513. In order to facilitate the fixation of the rotating sleeve 509, positioning holes are symmetrically opened at the top end of the air extraction cylinder 501. The bottom end of the positioning pin 508 is embedded inside the positioning hole. The outer side of the rotating sleeve 509 is rotatably connected to the inner wall of the air extraction cylinder 501. The sealing plates 516 inside the two connecting pipes 510 are all located on the same side;

[0052] A limit and anti-overflow mechanism 6 is arranged on the outer side of the vertical cylinder 401. The limit and anti-overflow mechanism 6 includes a convex block 601, a movable rod 602, a plug plate 603, a traction ring 604, an electric push rod 605, a splicing ring 606, a touch switch 607, a floating ring 608, a top rod 609 and a top block 610;

[0053] Convex blocks 601 are equidistantly clamped on the outer side of the vertical cylinder 401. A movable rod 602 is movably connected inside the convex block 601, and a plug plate 603 is clamped at the bottom end of the movable rod 602. A traction ring 604 is clamped at the top end of the movable rod 602 corresponding to the outer side position of the vertical cylinder 401. An electric push rod 605 is installed at the top end of the traction ring 604. A splicing ring 606 is clamped at the top end of the electric push rod 605. Touch switches 607 are equidistantly clamped at the bottom end of the splicing ring 606. In order to prevent the secretion from overflowing, there are four movable rods 602 in total. The outer diameter of the plug plate 603 is larger than the inner diameter of the vertical cylinder 401. Both the electric push rod 605 and the touch switch 607 are powered by an external power supply, and the signal output end of the touch switch 607 is connected to the input end of the electric push rod 605;

[0054] A floating ring 608 is movably sleeved outside the movable rod 602 at a position corresponding to the outside of the vertical cylinder 401. A top rod 609 is clamped at the top of the floating ring 608. A top block 610 is clamped at the top of the top rod 609 at a position corresponding to the top of the traction ring 604. In order to facilitate the limitation of the floating ring 608, the inner walls of the traction ring 604 and the floating ring 608 are both attached to the outside of the vertical cylinder 401. There are four top blocks 610 in total, and the installation positions of the top blocks 610 correspond to the installation positions of the touch switches 607.

[0055] The working principle and usage process of the present invention: First, after connecting the collection tube 402 to the vertical cylinder 401, the patient is made to open the mouth and bite the bite ring 405, so as to fix the oval mask 404 at the mouth. At the same time, the elastic band 412 is made to bypass the back of the ear, and the winding rod 410 is rotated to wind up the elastic band 412. The length of the elastic band 412 is adjusted as needed to facilitate the wearing of different patients. In addition, the winding rod 410 is limited by the anti-slip ring 411 to fix the length of the elastic band 412, ensuring the wearing effect. Furthermore, one end of the collection tube 402 is fixedly embedded inside the oral cavity, facilitating the subsequent collection of secretions and improving the stability.

[0056] Next, the pull rod 504 is pulled to drive the piston plate 505 to move inside the air extraction cylinder 501, and through the cooperation of the air extraction tube 502, the gas inside the collection tank 2 and the sealing cover 3 is extracted and discharged through the exhaust pipe 503, forming a negative pressure inside the collection tank 2 and improving the collection effect of the secretions.

[0057] In addition, through the cooperation of the retaining ring 511, the fixing plate 512, the sliding rod 513, the gasket 514, the tension spring 515 and the sealing plate 516, when extracting air, the connecting pipe 510 close to the sealing cover 3 is opened, and the connecting pipe 510 far from the sealing cover 3 is sealed, facilitating the discharge of the gas inside the sealing cover 3. When exhausting, the connecting pipe 510 close to the sealing cover 3 is sealed, and the connecting pipe 510 far from the sealing cover 3 is opened, timely discharging the extracted gas to prevent the phenomenon of backflow and ensuring the air extraction effect.

[0058] Next, the positioning pin 508 is rotated out to release the limitation on the turntable 507, facilitating the rotation of the turntable 507. After the turntable 507 rotates and drives the rotating rod 506 and the rotating sleeve 509 to rotate half a turn, the positioning pin 508 is used for re-limitation, changing the positions of the two connecting pipes 510, facilitating the introduction of external gas into the sealing cover 3, preventing the air pressure inside the sealing cover 3 from being too low and reducing the harm caused to the patient.

[0059] Next, after a negative pressure is formed between the collection tank 2 and the sealing cover 3, it is convenient to pump the secretions inside the patient's oral cavity into the collection tank 2. As the secretions in the collection tank 2 increase, the liquid level rises, pushing the floating ring 608 upward, and through the ejector rod 609, pushing the top block 610 upward to contact the touch switch 607, controlling the electric push rod 605 to contract, pulling the traction ring 604, the movable rod 602 and the plug plate 603 upward to seal the vertical cylinder 401, stopping the extraction of the secretions, preventing the secretions in the collection tank 2 from being too much and blocking the air extraction pipe 502, which affects the subsequent use;

[0060] Finally, by rotating the threaded cylinder 403, the oval mask 404 and the bite ring 405 are moved and separated along the collection pipe 402, and by rotating the rotating cylinder 406, the splicing plate 407 is moved to separate from the threaded cylinder 403, improving the convenience of disassembly, facilitating the replacement of the collection pipe 402, the oval mask 404, the bite ring 405 and the threaded cylinder 403, and preventing cross-infection;

[0061] Example 2: Structures can be added as required: including a bionic adaptive negative pressure system, which is linked by a micro silent pump and a humidity sensor. A flexible humidity sensor (such as a textile-based capacitive sensor) is embedded at the patient's mandibular contour to real-time monitor the saliva secretion volume. When the saliva volume exceeds the threshold, the micro negative pressure pump (<20dB) is automatically started to suck as needed, reducing energy consumption;

[0062] And a multi-directional drainage channel. Radial grooves are designed in the collection cover (imitating the distribution of salivary glands) to ensure that saliva can flow into the collection bag in a directional manner in different postures such as lying and sitting, avoiding side leakage;

[0063] An ultra-thin invisible wearing structure can also be added, sampling a medical-grade silicone composite bracket: using a 3D-scanned customized mandibular bracket (with a thickness of 1.5mm), embedding a nano-hydrophobic coating drainage pipe (with a diameter of 2mm), and covering with a skin-like patch (breathable PU film) to achieve invisible wearing.

[0064] A magnetic fast-release interface. The collection bag and the drainage pipe are connected through a magnetic connector, which can be replaced with one hand to avoid contamination;

[0065] Dual-effect protection of antibacterial and anti-backflow: A one-way valve design, and a duckbill-shaped silicone valve is set at the inlet of the drainage pipe, only allowing liquid to flow in one direction and blocking the backflow of bacteria.

[0066] A UV-C self-cleaning module: A micro ultraviolet lamp is built into the collection bag (started regularly 3 times a day, 10 seconds each time) to inhibit the growth of pathogens.

[0067] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A negative pressure type dynamic oral secretion collection device, comprising a base (1), characterized in that: A collection tank (2) is snap-connected to the top end of the base (1). A sealing cover (3) is sleeved outside the collection tank (2). A convenient disassembly and collection mechanism (4) is arranged at the top end of the sealing cover (3). The convenient disassembly and collection mechanism (4) includes a vertical cylinder (401). A vertical cylinder (401) is snap-connected to one side of the top end of the sealing cover (3). A collection pipe (402) is connected inside the vertical cylinder (401). A threaded cylinder (403) is sleeved outside the collection pipe (402). An oval mask (404) is snap-connected to one end of the threaded cylinder (403). And a bite ring (405) is snap-connected to one end of the oval mask (404). A rotating cylinder (406) is sleeved outside the threaded cylinder (403). A splicing plate (407) is movably sleeved outside the rotating cylinder (406). Extension frames (408) are snap-connected to both ends of the splicing plate (407). A winding box (409) is snap-connected inside the extension frame (408). A winding rod (410) is rotatably connected inside the winding box (409). And an anti-slip ring (411) is sleeved outside the winding rod (410) through a thread. An elastic band (412) is connected to the outside of the winding rod (410). Extension channels (413) are symmetrically connected to the outside of the winding box (409).

2. The dynamic oral secretion collection device with negative pressure according to claim 1, characterized in that: The bottom end of the vertical cylinder (401) penetrates through the top end of the sealing cover (3). The outside of the collection pipe (402) is threadedly connected to the inner wall of the vertical cylinder (401). The bite ring (405) is oval. The bite ring (405) is made of food-grade rubber.

3. The dynamic oral secretion collection device with negative pressure according to claim 1, characterized in that: The outside of the threaded cylinder (403) is threadedly connected to the inner wall of the rotating cylinder (406). The splicing plate (407) is an arc-shaped plate. And one end of the splicing plate (407) is attached to one end of the oval mask (404).

4. A dynamic collection device for oral secretions in a negative pressure type, characterized in that: One end of the winding rod (410) penetrates through one end of the winding box (409). An anti-slip pad is snap-connected to the position on one side of the anti-slip ring (411) corresponding to one end of the winding box (409). The elastic band (412) passes through one extension channel (413) and is connected to the inner wall of the other extension channel (413).

5. The dynamic collection device for oral secretions in a negative pressure type according to claim 1, characterized in that: An air extraction negative pressure adjustment mechanism (5) is arranged at the top position outside the sealing cover (3). The air extraction negative pressure adjustment mechanism (5) includes an air extraction cylinder (501). An air extraction cylinder (501) is installed at the top position outside the sealing cover (3). An air extraction pipe (502) is connected to one end outside the air extraction cylinder (501). An exhaust pipe (503) is connected to the other end outside the air extraction cylinder (501). A pull rod (504) is movably connected to the bottom end of the air extraction cylinder (501). And a piston plate (505) is snap-connected to the top end of the pull rod (504). The top end of the air pump (501) is rotatably connected to a rotating rod (506). The top end of the rotating rod (506) is clamped with a turntable (507). The top end of the turntable (507) is symmetrically connected with positioning pins (508) through threads. The bottom end of the rotating rod (506) is clamped with a rotating sleeve (509). The inner wall of the rotating sleeve (509) is symmetrically clamped with connecting pipes (510). The inner walls of both connecting pipes (510) are clamped with retaining rings (511). And the inner walls of both retaining rings (511) are clamped with fixing plates (512). A sliding rod (513) is movably connected inside the fixing plate (512). One end of the sliding rod (513) is clamped with a gasket (514). Tension springs (515) are clamped between the gasket (514) and the fixing plate (512). The other end of the sliding rod (513) is clamped with a sealing plate (516).

6. The dynamic oral secretion collection device with negative pressure according to claim 5, characterized in that: The other end of the air extraction pipe (502) is embedded inside the sealing cover (3). The air extraction pipe (502) corresponds to the exhaust pipe (503). The outer side of the piston plate (505) is in fit with the inner wall of the air pump (501).

7. The dynamic collection device for oral secretions in a negative pressure type according to claim 5, wherein: Positioning holes are symmetrically formed at the top end of the air pump (501). The bottom end of the positioning pin (508) is embedded inside the positioning hole. The outer side of the rotating sleeve (509) is rotatably connected with the inner wall of the air pump (501). The sealing plates (516) inside the two connecting pipes (510) are all located on the same side.

8. The dynamic oral secretion collection device with negative pressure according to claim 1, characterized in that: A limit and anti-overflow mechanism (6) is arranged on the outer side of the vertical cylinder (401). The limit and anti-overflow mechanism (6) includes a convex block (601). Convex blocks (601) are equidistantly clamped on the outer side of the vertical cylinder (401). A movable rod (602) is movably connected inside the convex block (601). And a plug plate (603) is clamped at the bottom end of the movable rod (602). A traction ring (604) is clamped at the top end of the movable rod (602) corresponding to the outer side position of the vertical cylinder (401). An electric push rod (605) is installed at the top end of the traction ring (604). A splicing ring (606) is clamped at the top end of the electric push rod (605). Touch switches (607) are equidistantly clamped at the bottom end of the splicing ring (606). A floating ring (608) is movably sleeved on the outer side of the movable rod (602) corresponding to the outer side position of the vertical cylinder (401). A top rod (609) is clamped at the top end of the floating ring (608). A top block (610) is clamped at the top end of the top rod (609) corresponding to the top position of the traction ring (604).

9. The dynamic oral secretion collection device with negative pressure according to claim 7, wherein: There are four movable rods (602) in total. The outer diameter of the plug plate (603) is larger than the inner diameter of the vertical cylinder (401). Both the electric push rod (605) and the touch switch (607) are powered by an external power supply. And the signal output end of the touch switch (607) is connected to the input end of the electric push rod (605).

10. A dynamic negative-pressure oral secretion collection device according to claim 7, characterized in that: The inner walls of the traction ring (604) and the floating ring (608) are both in fit with the outer side of the vertical cylinder (401). There are four top blocks (610) in total. And the installation positions of the top blocks (610) correspond to the installation positions of the touch switches (607).

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