Suction cup with adjustable pressure

Abstract

The utility model provides a kind of can adjust pressure suction type fire cup, belong to medical instrument technical field, it includes suction device and jar body;Suction device includes shell, first check valve assembly, second check valve assembly, pull rod, bolt and compression spring;Shell top is equipped with bolt positioning slot;Shell inside is equipped with pull rod cavity, first check valve cavity and second check valve cavity, first check valve cavity is communicated with jar body by first air passage;Second check valve cavity is communicated with first check valve cavity by second air passage;First check valve assembly is located in first check valve cavity;Second check valve assembly is located in second check valve cavity;Pull rod bottom is slidably connected with shell inner wall;Pull rod is equipped with stop hole;Bolt is slidably located in bolt positioning slot;Cover is connected with shell top;Jar body is connected with shell as integrated structure.The utility model not only can solve the problem that traditional fire cup needs to use multiple appliances cooperation, can also adjust the pressure in jar body.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a pressure-adjustable suction cupping device. Background Technology

[0002] Cupping is a traditional Chinese medicine therapy that uses cups as tools and employs methods such as burning or suction to create negative pressure, causing the cups to adhere to the body surface and create local blood stasis, thereby regulating the body.

[0003] Currently used ordinary suction cups require additional tools, such as a negative pressure gun, to create negative pressure inside the cup after the piston at the top of the cup is attached and pulled. Traditional suction cups, using a negative pressure gun to draw air to create negative pressure, cannot be operated with one hand and are difficult to apply to different parts of the body. Although the negative pressure can be adjusted using the gun, this requires the operator's experience. Furthermore, air leakage is prone to occur when the gun is removed from the cup, making it difficult to maintain a stable negative pressure inside the cup and affecting the treatment experience.

[0004] Therefore, it is essential to design a pressure-adjustable suction cupping device to solve the above problems. Utility Model Content

[0005] To address the shortcomings of the existing technology, this invention aims to provide a pressure-adjustable suction cupping device. By setting two sets of one-way valve assemblies and three stop holes on the pull rod, the structure has been optimized, allowing this invention to operate on a single cupping jar without the need for additional tools, and to accurately adjust the air pressure inside the jar through the different stop holes on the pull rod.

[0006] This utility model is achieved through the following technical solution:

[0007] An adjustable pressure suction cupping device includes a suction device and a cupping body. The suction device includes a housing, a first one-way valve assembly, a second one-way valve assembly, a pull rod, a pin, and a compression spring. A boss is provided on the top of the housing, and a pin positioning groove is provided within the boss. The housing contains a pull rod cavity, a first one-way valve cavity, and a second one-way valve cavity that are interconnected. The pull rod cavity is located above the first one-way valve cavity, and the bottom of the first one-way valve cavity is connected to the cupping body via a first air passage. The second one-way valve cavity is located on the side wall of the housing and is connected to the first one-way valve cavity via a second air passage. The first one-way valve assembly is located within the first one-way valve cavity and is in contact with the wall of the first air passage. The second one-way valve assembly is located within the second one-way valve cavity. The first one-way valve assembly has a one-way valve chamber and is in contact with the wall of the second air passage. The bottom of the pull rod is located in the pull rod chamber and is slidably connected to the inner wall of the housing located in the pull rod chamber. The rod has multiple pressure-adjustable stop holes. The pin is slidably disposed in the pin positioning groove and any stop hole on the same axis as the pin positioning groove. The compression spring is disposed in the pull rod chamber and is located between the pull rod and the first one-way valve assembly. A cover with a central through hole is provided at the boss on the top of the housing, and the rod slides up and down in the central through hole. The tank is located below the suction device, the bottom of the housing penetrates through the top of the tank, and the outer circumference of the bottom of the housing is sealed and connected to the tank as an integral structure. The bottom of the tank has an adsorption port.

[0008] Preferably, the first one-way valve chamber includes a first cylindrical portion and a first conical portion, and the first one-way valve assembly includes a first ball, a first spring, and a first spring baffle. The first ball is disposed inside the first conical portion and is in contact with the wall of the first air passage. The first spring baffle is threadedly connected to the inner wall of the housing inside the first one-way valve chamber, and a first air hole is provided on the first spring baffle. The first spring is disposed inside the first cylindrical portion and is located between the first spring baffle and the first ball.

[0009] Preferably, the diameter of the first cylindrical portion is smaller than the diameter of the pull rod cavity, and the bottom opening diameter of the first conical portion is equal to the diameter of the first air passage; the diameter of the first cylindrical portion is larger than the diameter of the first sphere, and the diameter of the first air passage is smaller than the diameter of the first sphere; the first one-way valve cavity, the adsorption port, the first air passage, the first air hole, and the pull rod cavity are all coaxially arranged.

[0010] Preferably, the second one-way valve chamber and the first one-way valve chamber have the same structure and are arranged perpendicular to each other. The second one-way valve chamber includes a second cylindrical part and a second conical part. The second one-way valve assembly includes a second ball, a second spring, a second spring baffle, and a stopcock. The second ball is disposed in the second conical part and is in contact with the wall of the second air passage. The second spring baffle is in contact with the inner wall of the housing and is provided with a second air hole. The second spring is disposed in the second cylindrical part and is located between the second spring baffle and the second ball. The stopcock is threadedly connected to the inner wall of the housing in the second one-way valve chamber to limit the second spring plate, and the stopcock is provided with a third air hole.

[0011] Preferably, the diameter of the opening at the end of the second conical portion is equal to the diameter of the second air passage; the diameter of the second cylindrical portion is greater than the diameter of the second sphere, and the diameter of the second air passage is smaller than the diameter of the second sphere;

[0012] The second one-way valve chamber is coaxially arranged with the second air passage, the second air hole, and the third air hole.

[0013] Preferably, the top of the pull rod is provided with a hand-held part, and the pull rod has three stop holes, namely a first stop hole, a second stop hole and a third stop hole.

[0014] Preferably, the top surface of the compression spring is in contact with the bottom surface of the pull rod, and the bottom surface of the compression spring is in contact with the step at the bottom of the pull rod cavity.

[0015] Preferably, a sealing ring is provided between the bottom circumference of the pull rod and the inner wall of the housing, and the sealing ring is in frictional contact with the inner wall of the housing.

[0016] Preferably, the pin positioning groove is provided along the radial direction of the upper surface of the housing.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The pressure-adjustable suction cupping device of this utility model does not require the use of additional supporting tools. The negative pressure process of traditional cupping can be completed by repeatedly pulling the lever. It can be done with one hand, which can solve the problems of traditional cupping requiring the use of multiple tools and inconvenience in operating on local areas.

[0019] 2. The pull rod of this utility model is provided with three stop holes. The stop holes are fixed in the pin positioning groove by the pin, which can realize fine adjustment of the negative pressure in the tank to meet different pressure requirements in the tank.

[0020] 3. This utility model is equipped with two sets of one-way valve assemblies. The first one-way valve assembly is set to maintain the negative pressure inside the can and prevent air leakage. The second one-way valve assembly is set to discharge the gas in the pull rod cavity when the pull rod is pressed down, so as to realize multiple air extraction processes and further reduce the pressure inside the can during the cupping process to adapt to the needs of different pressure inside the can.

[0021] 4. The tank and the air extraction device of this utility model are fixedly connected as an integrated structure and sealed. Each tank is equipped with an air extraction device. The structure is reasonably designed and can be operated on each tank individually. It is simple and convenient and solves the problem of air leakage when the negative pressure gun is removed from traditional air extraction tanks. Attached Figure Description

[0022] Figure 1 This is an overall cross-sectional view of the pressure-adjustable suction cupping device of this utility model.

[0023] Figure 2 This is a cross-sectional view of the air extraction device of this utility model;

[0024] Figure 3 For the present utility model Figure 2 An enlarged schematic diagram of the second check valve assembly indicated by position B in the middle.

[0025] Explanation of markings in the diagram:

[0026] 1. Tank body; 2. Shell; 3. First sphere; 4. First spring; 5. First spring baffle; 6. Compression spring; 7. Sealing ring; 8. Pull rod; 9. Pin; 10. Cover; 11. Second sphere; 12. Second spring; 13. Second spring baffle; 14. Plug; 15. First air passage; 16. Second air passage; 17. Handhold; 18. Boss; 19. First stop hole; 20. Second stop hole; 21. Third stop hole; 22. First air hole; 23. Third air hole; 24. Suction port; 25. First cylindrical part; 26. First conical part; 27. Second air hole. Detailed Implementation

[0027] To fully describe the technical content, structural features, objectives, and beneficial effects of this utility model, a detailed description will be provided below in conjunction with the accompanying drawings.

[0028] This utility model provides a pressure-adjustable suction cupping device, such as... Figures 1 to 3 As shown, it consists of two parts, an upper and a lower part, including an air extraction device and a tank 1. The tank 1 is located below the air extraction device, and the top of the tank 1 is connected to the bottom of the housing 2 of the air extraction device as an integral structure.

[0029] Traditional suction cupping involves using a separate negative pressure gun attached to the cupping jar to create negative pressure inside. One gun can be used to suction multiple jars, requiring removal from one jar and installation on the next. This process is prone to leakage when the gun is removed, making it inconvenient and causing unstable negative pressure within the jar. The integrated structure described in this invention refers to each jar 1 having a suction device. The suction device and the jar are sealed and fixed together using adhesive or welding, making them non-removable. This allows for individual suction device operation on individual jars, simplifying operation and solving the problem of leakage when the negative pressure gun is removed.

[0030] The canister 1 has a negative pressure space inside, and the bottom of the canister 1 has an adsorption port 24 that connects to the negative pressure space for adsorption onto the skin surface. The top of the canister 1 has a first air passage 15 that connects to the negative pressure space and is connected to a first one-way valve chamber.

[0031] The air extraction device includes a housing 2, a first one-way valve assembly, a second one-way valve assembly, a pull rod 8, a pin 9, and a compression spring 6.

[0032] The top of the housing 2 is open, and a boss 18 extending outward at its top edge is provided for easy operation. A pin positioning groove is provided inside the boss 18. The pin positioning groove is provided in the radial direction along the upper surface of the housing 2, and the pin 9 is inserted into the pin positioning groove.

[0033] The housing 2 has interconnected pull rod chamber, first one-way valve chamber, and second one-way valve chamber. The pull rod chamber is located above the first one-way valve chamber, and the bottom of the first one-way valve chamber is connected to the tank body 1 through a first air passage 15. The second one-way valve chamber is located on the side wall of the housing 2, and the second one-way valve chamber is connected to the first one-way valve chamber through a second air passage 16.

[0034] The first one-way valve assembly is located in the first one-way valve chamber at the center of the housing, and the first ball 3 in the first one-way valve assembly is in contact with the wall of the first air passage.

[0035] Specifically, the first one-way valve chamber includes a first cylindrical portion 25 and a first conical portion 26. The first one-way valve assembly includes a first ball 3, a first spring 4, and a first spring baffle 5. The first ball 3 is disposed within the first conical portion 26 and is in contact with the wall of the first air passage. The first spring baffle 5 is threadedly connected to the inner wall of the housing within the first one-way valve chamber. The first spring 4 is disposed within the first cylindrical portion 25 and is located between the first spring baffle 5 and the first ball 3. The elastic force of the first spring 4 can be adjusted through the threaded connection between the first spring baffle 5 and the housing 2. In a preferred embodiment of this utility model, the first one-way valve chamber is configured with a structure that is wider at the top and narrower at the bottom, which can limit the first ball 3 under the action of the first spring 4. The first spring baffle 5 is provided with a first air hole 22, and the top of the first one-way valve chamber is connected to the upper pull rod chamber through the first air hole 22 of the first spring baffle 5. When the pull rod 8 is pulled, gas can enter and exit through the first air hole 22.

[0036] In a preferred embodiment of the present invention, the diameter of the first cylindrical portion 25 is smaller than the diameter of the pull rod cavity, and the bottom opening diameter of the first conical portion 26 is equal to the diameter of the first air passage 15.

[0037] The diameter of the first cylindrical part 25 is larger than the diameter of the first sphere 3, and the diameter of the first air passage 15 is smaller than the diameter of the first sphere 3.

[0038] The second one-way valve assembly is disposed in the second one-way valve cavity located in the side wall of the housing, and the second ball 11 in the second one-way valve assembly is in contact with the wall of the second air passage.

[0039] Specifically, the second one-way valve chamber and the first one-way valve chamber have the same structure and are arranged perpendicular to each other. The second one-way valve chamber includes a second cylindrical portion and a second conical portion. The second one-way valve assembly includes a second ball 11, a second spring 12, a second spring baffle 13, and a stopcock 14. The second ball 11 is disposed within the second conical portion and is in contact with the wall of the second air passage. The second spring baffle 13 is in contact with the inner wall of the housing and is provided with a second air hole 27. The second spring 12 is disposed within the second cylindrical portion and is located between the second spring baffle 13 and the second ball 11. The stopcock 14 is threadedly connected to the inner wall of the housing within the second one-way valve chamber to limit the movement of the second spring baffle 13, and is provided with a third air hole 23.

[0040] The diameter of the opening at the end of the second conical part is equal to the diameter of the second airway 16.

[0041] The diameter of the second cylindrical part is larger than the diameter of the second sphere 11, and the diameter of the second air passage 16 is smaller than the diameter of the second sphere 11.

[0042] The first one-way valve chamber, the adsorption port 24, the first air passage 15, the first air hole 22, and the pull rod chamber are all arranged on the same axis.

[0043] The second one-way valve chamber is coaxially arranged with the second air passage 16, the second air hole 27, and the third air hole 23.

[0044] The pull rod cavity is a cylindrical hollow structure, with the bottom of the pull rod 8 located within it. The bottom of the pull rod 8 is slidably connected to the inner wall of the housing within the pull rod cavity. Specifically, a sealing ring 7 is provided between the bottom circumference of the pull rod 8 and the inner wall of the housing. The sealing ring 7 is attached to the outer circumference of the pull rod 8 and makes frictional contact with the inner wall of the housing, thus providing a sealing effect. A handle 17 is provided at the top of the pull rod 8 for easy operation. When the pull rod 8 slides up and down within the pull rod cavity, the sealing ring 7 prevents air leakage and protects against friction between the housing and the pull rod.

[0045] The pull rod 8 has multiple stop holes, specifically three: a first stop hole 19, a second stop hole 20, and a third stop hole 21. The pin 9 is slidably positioned in the pin positioning groove and any of the stop holes on the same axis as the pin positioning groove. This not only secures the pull rod 8 but also allows for precise pressure adjustment within the tank 1 by fixing the pull rod through different stop holes. The pin's fixation of the pull rod also helps maintain stable negative pressure within the tank, preventing leaks.

[0046] Compression spring 6 is disposed inside the pull rod cavity and located between pull rod 8 and the first one-way valve assembly. The top surface of compression spring 6 is in contact with the bottom surface of pull rod 8, and the bottom surface of compression spring 6 is in contact with the step at the bottom of pull rod cavity.

[0047] A cover 10 is provided on the top of the housing. The cover 10 is fixedly connected to the upper surface of the boss 18 on the top of the housing 1 by screws. The cover 10 is provided with a central through hole. The rod of the pull rod 8 is limited by the cover 10, and the pull rod slides up and down in the central through hole of the cover 10 to prevent the pull rod 8 from being pulled out of the pull rod cavity during the pulling process.

[0048] The specific embodiments of this utility model are further described below:

[0049] When using the adjustable pressure suction cupping device of this invention, first attach the suction port 24 at the bottom of the cupping body 1 to the skin surface.

[0050] Then, by repeatedly lifting and pressing down the pull rod 8, multiple evacuations can be performed inside the tank 1, creating a negative pressure chamber within the tank 1. The pull rod 8 can be fixed by simultaneously inserting the pin 9 into any of the stop holes on it. Specifically, depending on the required negative pressure, when the pressure generated by the first stop hole 19 is needed, the pull rod 8 is pressed down so that the first stop hole 19 and the pin positioning groove are aligned on the same axis, and the pin is simultaneously inserted into both the pin positioning groove and the first stop hole to fix the pull rod 8. When the second stop hole 20 or the third stop hole 21 is needed to fix the pull rod 8, both holes are aligned on the same axis as the pin positioning groove. After the pull rod is fixed, under the action of the first spring 4, the first ball 3 seals the first air passage 15, maintaining negative pressure inside the tank 1 and preventing air leakage.

[0051] The second one-way valve assembly on the side wall of the housing can discharge gas from the pull rod cavity under the action of the pull rod 8, thereby realizing multiple suction processes. The gas in the pull rod cavity is discharged from the second air passage 16. Specifically, when the pull rod 8 is pressed down, the gas in the pull rod cavity enters the first one-way valve cavity through the first air hole 22. The gas pressure keeps the first ball 3 and the first air passage 15 in a closed state, but the gas pressure through the second air passage 16 causes the second ball 11 to leave the second air passage 16, and the gas enters the second one-way valve cavity, and is discharged in sequence through the second air hole 27 on the second spring baffle 13 and the third air hole on the stopcock 14. The gas pressure inside the cupping jar is further reduced during the cupping process to meet different needs.

[0052] Then, pull up lever 8 to seal the second ball 11 and the second air passage 16, while simultaneously separating the first ball 3 from the first air passage 15, drawing out the gas from tank 1 and increasing the negative pressure inside tank 1. Repeatedly pull lever 8 until the tank 1 reaches the optimal negative pressure standard.

[0053] After cupping, simply separate the suction port 24 from the skin surface.

[0054] In a preferred embodiment of this invention, during the process of pressing down the pull rod to release air and then lifting the pull rod 8, the negative pressure inside the tank 1 is at its minimum when the pull rod 8 is fixed through the first stop hole 19; the negative pressure inside the tank 1 increases when the pull rod 8 is lifted and fixed through the second stop hole 20; and the negative pressure inside the tank 1 is at its maximum when the pull rod is fixed through the third stop hole 21. This invention, by setting three levels of stop holes, achieves precise fine-tuning of the negative pressure inside the tank 1 to adapt to different pressure requirements within the tank.

[0055] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A pressure-adjustable suction cupping device, characterized in that: It includes an air extraction device and a tank; The air extraction device includes a housing, a first one-way valve assembly, a second one-way valve assembly, a pull rod, a pin, and a compression spring. A boss is provided on the top of the housing, and a pin positioning groove is provided within the boss. The housing contains a pull rod chamber, a first one-way valve chamber, and a second one-way valve chamber that communicate with each other. The pull rod chamber is located above the first one-way valve chamber, and the bottom of the first one-way valve chamber is connected to the tank body via a first air passage. The second one-way valve chamber is located on the side wall of the housing and is connected to the first one-way valve chamber via a second air passage. The first one-way valve assembly is located within the first one-way valve chamber and is connected to the first air passage. The second one-way valve assembly is disposed within the second one-way valve cavity and is in contact with the wall of the second air passage; the bottom of the pull rod is disposed within the pull rod cavity, and the bottom of the pull rod is slidably connected to the inner wall of the housing located within the pull rod cavity; the rod portion of the pull rod is provided with multiple pressure-adjustable stop holes; the pin is slidably disposed in the pin positioning groove and any stop hole located on the same axis as the pin positioning groove; the compression spring is disposed within the pull rod cavity and is located between the pull rod and the first one-way valve assembly; a cover with a central through hole is provided at the boss on the top of the housing, and the rod portion of the pull rod slides up and down within the central through hole; The tank is located below the suction device. The bottom of the shell extends through the top of the tank, and the outer circumference of the bottom of the shell is sealed and connected to the tank as an integral structure. The bottom of the tank is provided with an adsorption port.

2. The pressure-adjustable suction cupping device according to claim 1, characterized in that: The first one-way valve chamber includes a first cylindrical portion and a first conical portion. The first one-way valve assembly includes a first ball, a first spring, and a first spring baffle. The first ball is disposed inside the first conical portion and is in contact with the wall of the first air passage. The first spring baffle is threadedly connected to the inner wall of the housing inside the first one-way valve chamber, and a first air hole is provided on the first spring baffle. The first spring is disposed inside the first cylindrical portion and is located between the first spring baffle and the first ball.

3. The pressure-adjustable suction cupping device according to claim 2, characterized in that: The diameter of the first cylindrical portion is smaller than the diameter of the pull rod cavity, and the bottom opening diameter of the first conical portion is equal to the diameter of the first air passage; the diameter of the first cylindrical portion is larger than the diameter of the first sphere, and the diameter of the first air passage is smaller than the diameter of the first sphere; the first one-way valve cavity, the adsorption port, the first air passage, the first air hole, and the pull rod cavity are all coaxially arranged.

4. The pressure-adjustable suction cupping device according to claim 1, characterized in that: The second one-way valve chamber and the first one-way valve chamber have the same structure and are arranged perpendicular to each other. The second one-way valve chamber includes a second cylindrical part and a second conical part. The second one-way valve assembly includes a second ball, a second spring, a second spring baffle, and a stopcock. The second ball is disposed in the second conical part and is in contact with the wall of the second air passage. The second spring baffle is in contact with the inner wall of the housing and is provided with a second air hole. The second spring is disposed in the second cylindrical part and is located between the second spring baffle and the second ball. The stopcock is threadedly connected to the inner wall of the housing in the second one-way valve chamber to limit the second spring plate, and is provided with a third air hole.

5. The pressure-adjustable suction cupping device according to claim 4, characterized in that: The diameter of the opening at the end of the second conical part is equal to the diameter of the second air passage; the diameter of the second cylindrical part is greater than the diameter of the second sphere, and the diameter of the second air passage is less than the diameter of the second sphere; the second one-way valve chamber, the second air passage, the second air hole, and the third air hole are all arranged on the same axis.

6. The pressure-adjustable suction cupping device according to claim 1, characterized in that: The top of the pull rod is provided with a hand-held part, and the pull rod has three stop holes, namely the first stop hole, the second stop hole and the third stop hole.

7. The pressure-adjustable suction cupping device according to claim 1, characterized in that: The top surface of the compression spring is in contact with the bottom surface of the pull rod, and the bottom surface of the compression spring is in contact with the step at the bottom of the pull rod cavity.

8. The pressure-adjustable suction cupping device according to claim 1, characterized in that: A sealing ring is provided between the bottom circumference of the pull rod and the inner wall of the housing, and the sealing ring is in frictional contact with the inner wall of the housing.

9. The pressure-adjustable suction cupping device according to claim 1, characterized in that: The pin positioning groove is arranged radially along the upper surface of the housing.

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