A mouthpiece for chemotherapy

Abstract

The present invention provides a mouthpiece for chemotherapy, comprising a mouthpiece body, a valve core assembly, a connecting handle, a water inlet pipe, a water outlet pipe, a cleaning cup, a cleaning assembly and a water system. The patient holds the mouthpiece body in his mouth, and the mouthpiece body can achieve the purpose of supplying water to the patient's oral cavity, thereby preventing the problem of late oral ulcers. When there is a lot of liquid in the patient's oral cavity that needs to be discharged, the mouthpiece body also has the function of discharging the liquid in the patient's oral cavity, which is convenient for the patient to use, thereby reducing or avoiding the problems of oral ulcers caused by chemotherapy. At the same time, after the mouthpiece body is used, the cleaning assembly is used to connect with the mouthpiece body, so that the water inlet pipe, the water inlet channel, the accommodating chamber, the second water outlet hole and the cleaning assembly are connected. In this way, after starting the water system to supply water, clean water can enter the cleaning assembly from the accommodating chamber through the second water outlet hole, thereby achieving the cleaning of the mouthpiece body, which is convenient for subsequent use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a mouthpiece for chemotherapy. Background Art

[0002] In the later stage of chemotherapy, patients will suffer from oral ulcers due to damage to the oral mucosa, which increases the pain of the patients and affects their food intake, leading to malnutrition in the later stage. Therefore, during chemotherapy, patients are usually asked to gargle with ice water to prevent oral ulcers in the later stage. However, since ice water is liquid and irritating, many patients cannot hold it in their mouths, and the temperature of ice water cannot be maintained continuously. They need to spit it out and continue to drink ice water repeatedly. Repeating this process can easily make patients unable to persist, resulting in poor prevention effect.

[0003] At the same time, oral mucositis can also cause pain in patients in the later stage of transplantation. Many patients are averse to oral analgesics due to gastrointestinal reactions, which increases the discomfort of patients. Therefore, it is necessary to propose a mouthpiece that can be held in the mouth of patients and can supply water and drain liquid. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a chemotherapy mouthpiece to reduce or avoid problems such as oral ulcers caused by chemotherapy in patients and to reduce the discomfort of patients in the late stage of transplantation.

[0005] In order to achieve the above-mentioned object, the present invention provides a chemotherapy mouthpiece, comprising a mouthpiece body, which is in a U-shaped structure, and a drainage hole is arranged on the mouthpiece body; a tongue depressor, which is arranged on the inner arc side of the mouthpiece body, and a receiving cavity is arranged in the tongue depressor, and a first water outlet hole and a second water outlet hole connected with the receiving cavity are arranged on the tongue depressor, the first water outlet hole is arranged on the upper and lower surfaces of the tongue depressor, and the second water outlet hole is arranged on the side wall of the tongue depressor;

[0006] A valve core assembly, which is arranged in the accommodating cavity, and the valve core assembly blocks the second water outlet hole; a connecting handle, which is arranged on the outer arc side of the mouthpiece body, and a water inlet channel and a water outlet channel are arranged in the connecting handle, the water inlet channel is connected with the accommodating cavity, and the water outlet channel is connected with the drainage hole; a water inlet pipe, which is arranged on the connecting handle and connected with the water inlet channel; a water outlet pipe, which is arranged on the connecting handle and connected with the water outlet channel; a cleaning cup, which is used to accommodate the mouthpiece body; a cleaning assembly, which is arranged in the cleaning cup, and the cleaning assembly is used to open the valve core assembly so that the cleaning assembly is connected with the accommodating cavity and the valve core assembly blocks the first water outlet hole; and a water system, which is respectively connected with the water inlet pipe and the water outlet pipe, and the water system is used to supply water to the water inlet pipe and to provide negative pressure to the water outlet pipe.

[0007] Preferably, the water system includes a body, in which are disposed: a water storage cup for storing clean water; an ice storage cup for storing ice cubes, the ice storage cup being disposed below the water storage cup; a first solenoid valve, which is respectively connected to the water storage cup and the ice storage cup; a second solenoid valve, which is a three-way solenoid valve, the first interface of the second solenoid valve being connected to the water storage cup, and the second interface of the second solenoid valve being connected to the ice storage cup; a water pump, the water inlet end of which is connected to the third interface of the second solenoid valve, and the water outlet end of which is connected to the water inlet pipe; a collecting cup, which is used to collect sewage and is disposed below the cleaning cup, the collecting cup being connected to the water outlet pipe; a third solenoid valve, which is respectively connected to the collecting cup and the cleaning cup; and a vacuum pump, which is used to extract air from the collecting cup.

[0008] Preferably, the valve core assembly includes a valve block and a reset assembly; the valve block is slidably fitted in the accommodating cavity, the sliding direction of the valve block is parallel to the length direction of the connecting handle, and the reset assembly is used to apply elastic force to the valve block so that the valve block blocks the second water outlet hole;

[0009] The valve block is provided with two conduction units, and the conduction unit includes a third water outlet hole and a fourth water outlet hole that are connected. The third water outlet hole and the fourth water outlet hole respectively penetrate the valve block, and the third water outlet hole is connected with the accommodating cavity. When the valve block blocks the second water outlet hole, the fourth water outlet hole coincides with the second water outlet hole.

[0010] Preferably, an operation port is provided on the top of the cleaning cup, the cleaning assembly includes a valve seat, a water guide pipe and a plurality of nozzles, a push pin matching the second water outlet is provided on the valve seat, the push pin is a hollow cylindrical structure, a plurality of sixth water outlets are penetrated on the side wall of the push pin, and when the push pin pushes open the valve block, the sixth water outlet is communicated with the accommodating cavity;

[0011] One end of the water pipe is arranged on the valve seat and connected to the top pin, the water pipe extends along the inner wall of the cleaning cup and surrounds the top wall of the cleaning cup, and multiple nozzles are arranged on the water pipe; it also includes a positioning component arranged in the cleaning cup, and the positioning component is used to fix the mouthpiece body in the cleaning cup so that the accommodating cavity is connected with the water pipe.

[0012] Preferably, the positioning assembly includes two positioning units symmetrically arranged along the axis of the cleaning cup, the positioning unit includes a bracket and two positioning arms, the two ends of the bracket are respectively connected to the inner wall of the cleaning cup, the two positioning arms are arranged on the bracket at intervals, the positioning arms extend along the height direction of the cleaning cup, and a clamping station is formed between the two positioning arms; four positioning grooves are provided on the tongue depressor, and the four positioning grooves are respectively arranged in groups of two on the upper and lower surfaces of the tongue depressor, and each positioning groove is respectively matched with the corresponding positioning arm.

[0013] Preferably, it also includes two anti-slip arms, which are rotatably engaged with the top of the cleaning cup, and a boss is provided on the outer wall of the connecting handle. When the mouthpiece body is inserted into the positioning assembly and the push pin pushes open the valve seat, the anti-slip arms can abut against the boss.

[0014] Beneficial effects of the present invention:

[0015] The present invention discloses a mouthpiece for chemotherapy, which can achieve the purpose of continuously supplying water to the patient's oral cavity, thereby preventing the problem of oral ulcers in the later stage. When the patient's oral cavity has a lot of liquid that needs to be discharged, the mouthpiece body also has the function of discharging the liquid in the patient's oral cavity, which is convenient for the patient to use, thereby reducing or avoiding the problem of oral ulcers and other problems caused by chemotherapy.

[0016] At the same time, by designing a cleaning cup and a cleaning component, after using the mouthpiece body, the cleaning component is connected to the mouthpiece body to connect the water inlet pipe, the water inlet channel, the accommodating chamber, the second water outlet hole and the cleaning component. In this way, after starting the water supply of the water system, clean water can enter the cleaning component from the accommodating chamber through the second water outlet hole, thereby achieving the cleaning of the mouthpiece body and facilitating subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 A schematic diagram of the structure of a water system provided by an embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the mouthpiece body;

[0020] Figure 3 It is a schematic diagram of the interior of the mouthpiece body;

[0021] Figure 4 It is a partial schematic diagram of the interior of the accommodating cavity;

[0022] Figure 5 It is a structural schematic diagram of the valve block;

[0023] Figure 6 It is the internal schematic diagram of the valve block;

[0024] Figure 7 This is a schematic diagram of the interior of the cleaning cup;

[0025] Figure 8 A schematic diagram showing another perspective of the interior of the cleaning cup;

[0026] Fig. 9 It is a schematic diagram of the structure of the cleaning component;

[0027] Fig.10 It is a schematic diagram of the structure of the cleaning component and the positioning component;

[0028] Fig.11 A schematic diagram of cleaning the mouthpiece;

[0029] Fig.12 for Fig.11 Schematic diagram of the cross section under the state;

[0030] Reference numerals:

[0031] 10-mouthpiece body, 11-drainage hole;

[0032] 20-tongue pressing block, 21-accommodating cavity, 22-first water outlet hole, 23-second water outlet hole, 24-positioning groove, 25-flow guide partition, 26-guide protrusion;

[0033] 31-valve block, 311-third water outlet, 312-fourth water outlet, 32-reset assembly, 321-first hollow column, 322-second hollow column, 323-reset spring;

[0034] 40-connecting handle, 41-water inlet channel, 42-water outlet channel, 43-water inlet pipe, 44-water outlet pipe, 45-boss;

[0035] 50-cleaning cup, 51-operation port, 52-anti-drop arm;

[0036] 60-cleaning assembly, 61-valve seat, 62-water guide pipe, 63-sprinkler, 64-top pin, 641-sixth water outlet;

[0037] 71-water storage cup, 72-ice storage cup, 73-first solenoid valve, 74-second solenoid valve, 75-water pump, 76-collection cup, 77-third solenoid valve, 78-vacuum pump;

[0038] 80 - positioning assembly, 81 - bracket, 82 - positioning arm, 83 - clamping station. DETAILED DESCRIPTION

[0039] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0040] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] like Figure 1-12 As shown, in one embodiment of the present invention, a mouthpiece for chemotherapy is provided, including a mouthpiece body 10, a valve core assembly, a connecting handle 40, a water inlet pipe 43, a water outlet pipe 44, a cleaning cup 50, a cleaning assembly 60 and a water system.

[0046] The mouthpiece body 10 is in a U-shaped structure, similar to a dental brace. A drainage hole 11 is provided on the mouthpiece body 10. A tongue depressor 20 is provided on the inner arc side of the mouthpiece body 10. A accommodating cavity 21 is provided in the tongue depressor 20. The tongue depressor 20 is provided with a first water outlet hole 22 and a second water outlet hole 23 which are connected with the accommodating cavity 21. The first water outlet hole 22 is provided on the upper and lower surfaces of the tongue depressor 20. There are two first water outlet holes 22 in total. The first water outlet hole 22 passes through the tongue depressor 20, and the second water outlet hole 23 is provided on the side wall of the tongue depressor 20, that is, on the side away from the connecting handle 40.

[0047] The valve core assembly is arranged in the accommodating chamber 21, and the valve core assembly blocks the second water outlet 23. The connecting handle 40 is arranged on the outer arc side of the mouthpiece body 10, and a water inlet channel 41 and a water outlet channel 42 are arranged in the connecting handle 40, the water inlet channel 41 is connected to the accommodating chamber 21, and the water outlet channel 42 is connected to the drainage hole 11. The water inlet pipe 43 is arranged on the connecting handle 40 and is connected to the water inlet channel 41, and the water outlet pipe 44 is arranged on the connecting handle 40 and is connected to the water outlet channel 42.

[0048] The cleaning cup 50 is used to accommodate the mouthpiece body 10. The cleaning assembly 60 is disposed in the cleaning cup 50. The cleaning assembly 60 is used to open the valve core assembly so that the cleaning assembly 60 is connected to the accommodating chamber 21 and the valve core assembly blocks the first water outlet 22. The water system is connected to the water inlet pipe 43 and the water outlet pipe 44 respectively. The water system is used to supply water to the water inlet pipe 43 and to provide negative pressure to the water outlet pipe 44.

[0049] When using the chemotherapy mouthpiece, the patient can hold the mouthpiece body 10 by holding the connecting handle 40. When water needs to be supplied to the patient's oral cavity, the water system is activated, and the clean water in the water system flows into the accommodating cavity 21 of the tongue depressor 20 from the water inlet pipe 43 and the water inlet channel 41 in sequence. Since the valve core group blocks the second water outlet hole 23, the clean water can flow out from the first water outlet hole 22, thereby achieving the purpose of supplying water to the patient's oral cavity. When there is a lot of liquid in the patient's oral cavity, the water system is also activated to discharge the liquid in the oral cavity through the drainage hole 11, the water outlet channel 42 and the water outlet pipe 44.

[0050] After using the mouthpiece body 10, the patient or medical staff puts the mouthpiece body 10 into the cleaning cup 50 by holding the connecting handle 40, and connects the mouthpiece body 10 to the cleaning component 60. After the cleaning component 60 opens the valve core component and blocks the first water outlet 22, the water inlet pipe 43, the water inlet channel 41, the accommodating chamber 21, the second water outlet 23 and the cleaning component 60 are connected. In this way, after starting the water system to supply water, the cleaning component 60 can be used to clean the mouthpiece body 10.

[0051] In summary, in the chemotherapy mouthpiece of the present embodiment, the patient holds the mouthpiece body 10 in his mouth. During the chemotherapy, the mouthpiece body 10 can continuously or intermittently supply water to the patient's mouth, thereby preventing the problem of oral ulcers in the later stage. When the patient's oral cavity has a lot of liquid that needs to be discharged, the mouthpiece body 10 also has the function of discharging the liquid in the patient's mouth, which is convenient for the patient to use, thereby reducing or avoiding the patient's oral ulcers and other problems caused by chemotherapy.

[0052] At the same time, by designing the cleaning cup 50 and the cleaning component 60, after using the mouthpiece body 10, the cleaning component 60 is used to connect with the mouthpiece body 10, so that the water inlet pipe 43, the water inlet channel 41, the accommodating chamber 21, the second water outlet hole 23 and the cleaning component 60 are connected. In this way, after starting the water supply of the water system, clean water can enter the cleaning component 60 from the accommodating chamber 21 through the second water outlet hole 23, thereby achieving the cleaning of the mouthpiece body 10 and facilitating subsequent use.

[0053] In one embodiment, the water system includes a body, in which a water storage cup 71, an ice storage cup 72, a first solenoid valve 73, a second solenoid valve 74, a water pump 75, a collection cup 76, a third solenoid valve 77 and a vacuum pump 78 are arranged. Specifically, the water storage cup 71 is used to store purified water, the ice storage cup 72 is used to store ice cubes, the ice storage cup 72 is arranged below the water storage cup 71, the first solenoid valve 73 is respectively connected to the water storage cup 71 and the ice storage cup 72, the second solenoid valve 74 is a three-way solenoid valve, the first interface of the second solenoid valve 74 is connected to the water storage cup 71, and the second interface of the second solenoid valve 74 is connected to the ice storage cup 72.

[0054] The water inlet end of the water pump 75 is connected to the third interface of the second solenoid valve 74, and the water outlet end of the water pump 75 is connected to the water inlet pipe 43. The collecting cup 76 is used to collect sewage and is arranged below the cleaning cup 50. The collecting cup 76 is connected to the water outlet pipe 44. The third solenoid valve 77 is respectively connected to the collecting cup 76 and the cleaning cup 50. The vacuum pump 78 is used to extract the air in the collecting cup 76.

[0055] When water needs to be supplied to the water inlet pipe 43, the water storage cup 71, the second solenoid valve 74, the water pump 75 and the water inlet pipe 43 are in a connected state, so that the clean water in the water storage cup 71 can be supplied to the accommodating cavity 21 through the water inlet pipe 43, and then flow out from the first water outlet 22. When the mouthpiece body 10 is connected to the cleaning assembly 60, the clean water in the water storage cup 71 can flow to the cleaning assembly 60.

[0056] Since the ice storage cup 72 is designed below the water storage cup 71, when the first solenoid valve 73 connects the water storage cup 71 and the ice storage cup 72, the clean water in the water storage cup 71 will flow into the ice storage cup 72 through the first solenoid valve 73 to form ice water. When ice water needs to be supplied to the mouthpiece body 10, the ice storage cup 72, the second solenoid valve 74, the water pump 75 and the water inlet pipe 43 are in a connected state, and the clean water in the water storage cup 71 can be supplied to the accommodating cavity 21 through the water inlet pipe 43, and then flow out from the first water outlet 22.

[0057] Since ice water is quite irritating, patients cannot hold it in their mouths for a long time, or when there is too much liquid in the patient's mouth that needs to be discharged, the vacuum pump 78 will extract the air in the collection cup 76 after it is started, thereby creating a negative pressure in the water discharge pipe 44. Similarly, negative pressure will also be created near the drainage hole 11. In this way, the liquid in the mouth can be drawn into the collection cup 76, so that the waste liquid can be recovered without the patient having to remove the mouthpiece body 10.

[0058] In one embodiment, the valve core assembly includes a valve block 31 and a reset assembly 32. The valve block 31 is slidably fitted in the accommodating cavity 21. The sliding direction of the valve block 31 is parallel to the length direction of the connecting handle 40. The reset assembly 32 is used to apply elastic force to the valve block 31 so that the valve block 31 blocks the second water outlet 23. Two conduction units are provided on the valve block 31. The conduction units include a third water outlet 311 and a fourth water outlet 312 that are connected. The third water outlet 311 and the fourth water outlet 312 pass through the valve block 31 respectively. The third water outlet 311 is connected to the accommodating cavity 21. When the valve block 31 blocks the second water outlet 23, the fourth water outlet 312 overlaps with the second water outlet 23.

[0059] An operation port 51 is provided at the top of the cleaning cup 50. The cleaning assembly 60 includes a valve seat 61, a water conduit 62 and a plurality of nozzles 63. A push pin 64 is provided on the valve seat 61 to match the second water outlet 23. The push pin 64 is a hollow cylindrical structure. A plurality of sixth water outlets 641 are penetrated through the side wall of the push pin 64. When the push pin 64 pushes open the valve block 31, the sixth water outlet 641 is connected to the accommodating chamber 21. One end of the water conduit 62 is provided on the valve seat 61 and connected to the push pin 64. The water conduit 62 extends along the inner wall of the cleaning cup 50 and surrounds the top wall of the cleaning cup 50. A plurality of nozzles 63 are provided on the water conduit 62. A positioning assembly 80 is also provided in the cleaning cup 50. The positioning assembly 80 is used to fix the mouthpiece body 10 in the cleaning cup 50 so that the accommodating chamber 21 is connected to the water conduit 62.

[0060] Specifically, a flow guide partition 25 is designed in the accommodating chamber 21, and two guide protrusions 26 are provided on the top wall and the bottom wall of the accommodating chamber 21. The valve block 31 fits in the four guide protrusions 26, and the four guide protrusions 26 play a role in guiding and limiting the sliding of the valve block 31. The reset assembly 32 includes a first hollow column 321, a second hollow column 322 and a reset spring 323. The first hollow column 321 is arranged on the side of the valve block 31 away from the second water outlet 23, and the second hollow column 322 is arranged on the side of the flow guide partition 25 facing the valve block 31, and the first hollow column 321 is sleeved in the second hollow column 322, and the two ends of the reset spring 323 abut the valve block 31 and the flow guide partition 25 respectively.

[0061] When the mouthpiece body 10 needs to be cleaned, the patient or medical staff holds the connecting handle 40 to place the mouthpiece body 10 from the operation port 51 into the positioning assembly 80 in the cleaning cup 50. After the mouthpiece body 10 is placed in the positioning assembly 80, the push pin 64 will extend into the second water outlet 23 and push the valve block 31 upward. When the push pin 64 completely pushes the valve block 31, the fourth water outlet 312 will gradually be misaligned with the first water outlet 22 during the movement of the valve block 31 until the outer wall of the valve block 31 completely blocks the first water outlet 22. Since the sixth water outlet 641 is designed on the outer wall of the push pin 64, the clean water in the water storage cup 71 will flow into the water guide pipe 62 through the water inlet pipe 43, the water inlet channel 41, the accommodating chamber 21, the sixth water outlet 641, and the push pin 64 in sequence, and finally be sprayed out from the multiple nozzles 63, thereby achieving the cleaning of the mouthpiece body 10.

[0062] After cleaning, the patient or medical staff pulls the mouthpiece body 10 out of the cleaning cup 50 by holding the connecting handle 40. After losing the obstruction of the ejector pin 64, the reset spring 323 will quickly push the valve block 31 to re-block the second water outlet 23, and the fourth water outlet 312 will also be reset and aligned with the first water outlet 22 for connection.

[0063] In one embodiment, the positioning assembly 80 includes two positioning units symmetrically arranged along the axis of the cleaning cup 50, and the positioning unit includes a bracket 81 and two positioning arms 82. The two ends of the bracket 81 are respectively connected to the inner wall of the cleaning cup 50, and the two positioning arms 82 are arranged on the bracket 81 at intervals. The positioning arms 82 extend along the height direction of the cleaning cup 50, and a clamping station 83 is formed between the two positioning arms 82. Four positioning grooves are provided on the tongue depressor 20, and the four positioning grooves are respectively arranged on the upper and lower surfaces of the tongue depressor 20 in groups of two, and each positioning groove is matched with the corresponding positioning arm 82. This design is not only convenient for fixing the mouthpiece body 10, but also conducive to aligning the top pin 64 with the second water outlet 23, so that the accommodating cavity 21 and the water conduit 62 are quickly connected.

[0064] In one embodiment, in order to disengage the ejector pin 64 from the second water outlet 23, the chemotherapy mouthpiece further includes two anti-detachment arms 52, which are rotatably engaged with the top of the cleaning cup 50, and a boss 45 is provided on the outer wall of the connecting handle 40. When the mouthpiece body 10 is inserted into the positioning assembly 80 and the ejector pin 64 pushes open the valve seat 61, the anti-detachment arms 52 can abut against the boss 45.

[0065] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A mouthpiece for chemotherapy, characterized in that: include: The mouthpiece body is in a U-shaped structure and is provided with a drainage hole; A tongue depressor is arranged on the inner arc side of the mouthpiece body, a receiving cavity is arranged in the tongue depressor, a first water outlet and a second water outlet communicating with the receiving cavity are arranged on the tongue depressor, the first water outlet is arranged on the upper and lower surfaces of the tongue depressor, and the second water outlet is arranged on the side wall of the tongue depressor; A valve core assembly is disposed in the accommodating cavity, and the valve core assembly blocks the second water outlet hole; A connecting handle, which is arranged on the outer arc side of the mouthpiece body, and a water inlet channel and a water outlet channel are arranged in the connecting handle, the water inlet channel is communicated with the accommodating cavity, and the water outlet channel is communicated with the drainage hole; A water inlet pipe, which is arranged on the connecting handle and communicated with the water inlet channel; A water outlet pipe, which is arranged on the connecting handle and communicated with the water outlet channel; a cleaning cup for containing the mouthpiece body; a cleaning assembly, which is disposed in the cleaning cup, and is used to open the valve core assembly so that the cleaning assembly is communicated with the accommodating cavity, and the valve core assembly blocks the first water outlet; as well as A water system is connected to the water inlet pipe and the water outlet pipe respectively, and the water system is used to supply water to the water inlet pipe and to provide negative pressure to the water outlet pipe.

2. The chemotherapy mouthpiece according to claim 1, characterized in that: The water system comprises a body, in which is arranged: A water storage cup, which is used to store clean water; An ice storage cup, which is used to store ice cubes, and the ice storage cup is arranged below the water storage cup; a first solenoid valve, which is connected to the water storage cup and the ice storage cup respectively; A second solenoid valve, which is a three-way solenoid valve, wherein a first interface of the second solenoid valve is connected to the water storage cup, and a second interface of the second solenoid valve is connected to the ice storage cup; A water pump, whose water inlet end is connected to the third interface of the second solenoid valve, and whose water outlet end is connected to the water inlet pipe; A collecting cup, which is used to collect sewage and is arranged below the cleaning cup, and the collecting cup is connected to the water outlet pipe; a third solenoid valve, which is connected to the collection cup and the cleaning cup respectively; and A vacuum pump is used to extract the air in the collection cup.

3. The chemotherapy mouthpiece according to claim 1, characterized in that: The valve core assembly includes a valve block and a reset assembly; The valve block is slidably fitted in the accommodating cavity, the sliding direction of the valve block is parallel to the length direction of the connecting handle, and the reset assembly is used to apply elastic force to the valve block so that the valve block blocks the second water outlet hole; The valve block is provided with two conduction units, and the conduction unit includes a third water outlet hole and a fourth water outlet hole that are connected. The third water outlet hole and the fourth water outlet hole respectively penetrate the valve block, and the third water outlet hole is connected with the accommodating cavity. When the valve block blocks the second water outlet hole, the fourth water outlet hole coincides with the second water outlet hole.

4. The chemotherapy mouthpiece according to claim 3, characterized in that: The top of the cleaning cup is provided with an operation port, the cleaning assembly includes a valve seat, a water guide pipe and a plurality of nozzles, the valve seat is provided with a push pin matched with the second water outlet, the push pin is a hollow cylindrical structure, and a plurality of sixth water outlets are penetrated on the side wall of the push pin, when the push pin pushes open the valve block, the sixth water outlet is communicated with the accommodating cavity; One end of the water guide pipe is arranged on the valve seat and connected to the top pin, the water guide pipe extends along the inner wall of the cleaning cup and surrounds the top wall of the cleaning cup, and a plurality of the nozzles are arranged on the water guide pipe; It also includes a positioning component arranged in the cleaning cup, and the positioning component is used to fix the mouthpiece body in the cleaning cup so that the accommodating cavity is connected with the water conduit.

5. The chemotherapy mouthpiece according to claim 4, characterized in that: The positioning assembly includes two positioning units symmetrically arranged along the axis of the cleaning cup, the positioning unit includes a bracket and two positioning arms, the two ends of the bracket are respectively connected to the inner wall of the cleaning cup, the two positioning arms are arranged on the bracket at intervals, the positioning arms extend along the height direction of the cleaning cup, and a clamping station is formed between the two positioning arms; The tongue depressor is provided with four positioning grooves, which are arranged in groups of two on the upper and lower surfaces of the tongue depressor, respectively, and each positioning groove is matched with the corresponding positioning arm.

6. The chemotherapy mouthpiece according to claim 5, characterized in that: It also includes two anti-slip arms, which are rotatably engaged with the top of the cleaning cup. A boss is provided on the outer wall of the connecting handle. When the mouthpiece body is inserted into the positioning assembly and the push pin pushes open the valve seat, the anti-slip arms can abut against the boss.

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