Infusion apparatus and drip chamber

Abstract

The invention discloses an infusion apparatus and a drip chamber. The drip chamber comprises a drip chamber body and a non-return piece. A containing cavity is formed in the drip chamber body, and a liquid inlet and a liquid outlet are formed in the upper end and the lower end of the containing cavity respectively. The non-return piece is arranged in the containing cavity and slides in a reciprocating mode along the containing cavity based on liquid buoyancy, so that the non-return piece is provided with an upper station and a lower station, correspondingly, when the non-return piece is located at the upper station, the non-return piece is located between the liquid inlet and the liquid outlet, and when the non-return piece is located at the lower station, the non-return piece is used for blocking the liquid outlet. The infusion apparatus comprises the drip chamber. The non-return piece is matched with the height of the liquid level in the drip chamber body, so that the non-return piece ascends and descends in the drip chamber body, the liquid outlet of the drip chamber body is automatically controlled to be opened and closed through ascending and descending of the non-return piece, blood backflow of a patient is avoided, and infusion safety of the patient is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion sets, and in particular to an infusion set and a drip chamber. Background Art

[0002] An infusion set is a medical device used to establish a venous connection between medication and the patient during clinical intravenous infusion. It features a simple structure and ease of use. When administering medication through an infusion set, such as intravenous infusion, the drug is delivered into the body by utilizing the physical principle that the height of the medication (liquid) creates static pressure and atmospheric pressure. The medication in the infusion bottle is affected by atmospheric pressure and gravity, causing it to flow into the infusion hose, forming a water column. When the water column pressure (atmospheric pressure + static pressure of the medication) exceeds the venous pressure, the medication in the bottle flows smoothly into the patient's veins.

[0003] When using existing infusion sets, if the infusion bottle is not replaced in time after the delivery of the medicinal liquid, the water column pressure will be less than the venous pressure, and the patient's blood will flow back into the infusion set. In cases of long-term infusion and / or night-time infusion, the patient's blood backflow phenomenon is more frequent.

[0004] The existing infusion set cannot solve the problem of blood return due to its simple structure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing infusion sets may cause blood backflow, and the purpose is to provide an infusion set and a drip bucket to solve the above problem.

[0006] The present invention is achieved through the following technical solutions:

[0007] In a first aspect, the present invention provides a drip funnel, comprising a drip funnel body and a check member;

[0008] The drip chamber is provided with a receiving cavity, and the upper and lower ends of the receiving cavity are respectively provided with a liquid inlet and a liquid outlet;

[0009] The check member is arranged in the accommodating chamber and slides back and forth along the accommodating chamber based on the buoyancy of the liquid, so that the check member has an upper position and a lower position. Accordingly, when the check member is located at the upper position, the check member is located between the liquid inlet and the liquid outlet. When the check member is located at the lower position, the check member is used to block the liquid outlet.

[0010] In one possible design, the backstop includes a base barrel and a floating module;

[0011] The outer surface of the base tube is adapted to the liquid outlet and can be used to block the liquid outlet;

[0012] The floating module is connected to the upper end of the base cylinder. Accordingly, when the check member is located at the lower position, the floating module moves upward based on the buoyancy of the liquid and drives the base cylinder to move upward, so that the check member is separated from the lower position.

[0013] In one possible design, the base cylinder includes an outer cylinder and an inner cylinder;

[0014] The outer cylinder is a cylindrical structure with a closed lower end and an open upper end. The outer surface of the outer cylinder is used to block the liquid outlet. The lower part of the base cylinder is provided with a first hole body connected to the outside world.

[0015] The inner cylinder is a cylindrical structure with a closed lower end and an open upper end. The inner cylinder is inserted into the outer cylinder and can slide back and forth along the outer cylinder. A second hole body connected to the outside is provided at the lower part of the inner cylinder. Accordingly, when the first hole body and the second hole body are connected, the two form a water outlet.

[0016] A chute and a water trough are provided on the outer circumference of the inner tube, and a concave buoyancy trough is provided on the bottom surface of the inner tube. The lower end of the chute is connected to the water trough through a second hole, and the water trough is connected to the buoyancy trough;

[0017] Correspondingly, when the check member is in the lower position, the floating module drives the upper portion of the inner cylinder to deform, thereby forming a water gap between the inner cylinder and the outer cylinder. The upper end of the chute is connected to the accommodating cavity through the water gap to form a water channel for guiding liquid to the buoyancy tank, so that the inner cylinder and the floating module move upward, thereby forming a gap between the floating module and the bottom surface of the drip hopper body.

[0018] Correspondingly, a limit block inserted into the sliding groove is provided on the inner circumference of the outer cylinder, and the limit block is used to limit the sliding distance of the inner cylinder.

[0019] In a possible design, at least two water conduits are provided and are evenly distributed on the outer circumference of the inner cylinder.

[0020] In a possible design, a plurality of limiting ear supports are provided on the outer periphery of the upper end of the outer tube. When the check member is located at the lower position, the outer tube passes through the liquid outlet and the limiting ear supports abut against the bottom surface of the drip bucket body.

[0021] In one possible design, the floating module includes outriggers and a buoyant membrane;

[0022] There are a number of outriggers evenly distributed on the outer circumference of the inner cylinder, and correspondingly, the outer cylinder is provided with mounting grooves for the outriggers to pass through;

[0023] There are multiple buoyancy membranes, and two adjacent outriggers are connected by the buoyancy membranes;

[0024] The lower end of the drip bucket body is provided with an inward-retracting section. Accordingly, when the check member is located at the lower working position, the multiple outward-extending rods gather toward the inner cylinder under the action of the inward-retracting section, so that the upper part of the inner cylinder is deformed to form a water-passing gap.

[0025] In one possible design, the buoyancy membrane has a side for connecting to the outrigger, the side has two ends parallel to the outrigger, one end away from the inner tube is fixedly connected to the outrigger, and the end adjacent to the inner tube is slidably connected to the outrigger.

[0026] In one possible design, the outrigger has two opposite ends, one end of which is connected to the inner cylinder and the other end abuts the inner wall surface of the drip bucket body. The abutting end of the outrigger is used to guide the sliding of the check member. Accordingly, a guide groove adapted to the outrigger is provided on the inner wall surface of the drip bucket body.

[0027] In a possible design, the outrigger is arranged at an angle, and the inclination angle of the outrigger is adapted to the inclination angle of the bottom surface of the drip bucket body.

[0028] In a second aspect, the present invention provides an infusion set comprising the drip chamber.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0030] The check piece cooperates with the liquid level height in the drip funnel body to make the check piece rise and fall in the drip funnel body. The rise and fall of the check piece is used to automatically control the opening and closing of the liquid outlet of the drip funnel body, thereby preventing the patient's blood from flowing back and effectively ensuring the patient's infusion safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0032] Figure 1 The figure is a structural schematic diagram of a drip bucket when the check piece is in the upper working position.

[0033] Figure 2 The figure is a structural schematic diagram of a drip bucket when the check piece is in the lower working position.

[0034] Figure 3-Figure 5 This is a schematic diagram of the partial structure of the check member when the inner cylinder moves to different positions relative to the outer cylinder.

[0035] Figure 6 This is a schematic diagram of the top view of the outer tube when a limited ear support is provided.

[0036] Figure 7 Schematic diagram of the top view of the anti-return component.

[0037] Figure 8 This is a schematic diagram of the top view of the check member when the outer rod drives the inner cylinder to deform.

[0038] Markings and corresponding parts names in the accompanying drawings:

[0039] 10. Drip bucket body; 101. Accommodating chamber; 102. Inward section; 20. Check member; 30. Base tube; 31. Outer tube; 32. Inner tube; 301. First hole body; 302. Second hole body; 303. Slide groove; 304. Water flow groove; 305. Buoyancy groove; 306. Water flow gap; 307. Limit block; 308. Limit ear support; 40. Floating module; 41. Extension rod; 42. Buoyancy membrane. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that these specific details are not necessarily required to practice the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not described in detail to avoid obscuring the present invention.

[0042] Throughout this specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present invention. Therefore, appearances of the phrases "one embodiment," "an embodiment," "an example," or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combinations and / or subcombinations. Furthermore, it will be understood by those of ordinary skill in the art that the figures provided herein are for illustrative purposes only and are not necessarily drawn to scale. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0043] In the description of the present invention, the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0044] Example:

[0045] An infusion set includes a bottle puncture device, a drip chamber, a spiral connector, an infusion needle, a flow regulator, and an infusion hose. Conventional technology prevents blood reflux by replacing the bottle or closing the flow regulator after the liquid in the infusion bottle has been delivered. However, both of these operations require manual work by a nurse or other personnel, and delayed operation can also result in blood reflux due to various factors.

[0046] In view of this, a drip bucket is proposed here, specifically: Figures 1-8 As shown, a drip funnel includes a drip funnel body 10 and a check member 20;

[0047] The drip chamber body 10 is provided with a receiving chamber 101, and the upper and lower ends of the receiving chamber 101 are respectively provided with a liquid inlet and a liquid outlet;

[0048] The check member 20 is arranged in the accommodating chamber 101 and slides back and forth along the accommodating chamber 101 based on the buoyancy of the liquid, so that the check member 20 has an upper position and a lower position. Accordingly, when the check member 20 is located at the upper position, the check member 20 is located between the liquid inlet and the liquid outlet. When the check member 20 is located at the lower position, the check member 20 is used to block the liquid outlet.

[0049] The drip chamber body 10 has a certain volume and forms a accommodating chamber 101. In the prior art, the liquid in the infusion bottle flows into and accumulates in the accommodating chamber 101, so that a certain amount of liquid is stored in the accommodating chamber 101. When the amount of liquid transported out of the accommodating chamber 101 is balanced with the amount of liquid replenished in the infusion bottle, the liquid level in the accommodating chamber 101 remains stable.

[0050] It is easy to understand that when the liquid in the infusion bottle is delivered, the liquid in the accommodating chamber 101 loses the liquid supplement of the infusion bottle, and the liquid level in the accommodating chamber 101 will gradually decrease. At this time, the infusion bottle should be replaced or the flow regulator should be turned off to avoid blood reflux.

[0051] If the above operations are not performed promptly, the drip chamber includes a check member 20. Specifically, when liquid is present in the receiving chamber 101, the check member 20 floats on the liquid surface due to buoyancy. As the liquid level in the receiving chamber 101 gradually drops, the check member 20 also gradually drops with the liquid level. The above processes correspond to the check member 20 being in the upper position. When the liquid level in the receiving chamber 101 approaches the bottom surface of the receiving chamber 101, the check member 20 drops and blocks the liquid outlet. Accordingly, the check member 20 is in the lower position. Therefore, by blocking the liquid outlet of the drip chamber with the check member 20, the water column pressure generated by the remaining liquid in the infusion set is equal to the venous pressure, preventing blood backflow.

[0052] Furthermore, when a nearby person replaces the infusion bottle and resumes replenishing the liquid in the drip chamber 10, the liquid level in the receiving chamber 101 gradually rises, and the check member 20 also moves upward with the rising liquid level, causing the check member 20 to disengage from the liquid outlet and switch to the upper working position. Based on this, the liquid outlet of the drip chamber 10 is opened, and the infusion set can continue to deliver liquid.

[0053] Therefore, for the drip bucket, the check piece 20 cooperates with the liquid level height in the drip bucket body 10, so that the check piece 20 rises and falls in the drip bucket body 10, and the rise and fall of the check piece 20 is used to automatically control the opening and closing of the liquid outlet of the drip bucket body 10, thereby avoiding the backflow of the patient's blood and effectively ensuring the safety of the patient's infusion.

[0054] In one possible implementation, the backstop 20 includes a base cylinder 30 and a floating module 40;

[0055] The outer surface of the base tube 30 is adapted to the liquid outlet and can be used to block the liquid outlet;

[0056] The floating module 40 is connected to the upper end of the base cylinder 30. Accordingly, when the check member 20 is located at the lower position, the floating module 40 moves upward based on the buoyancy of the liquid and drives the base cylinder 30 to move upward, so that the check member 20 is separated from the lower position.

[0057] Based on the above design, the base barrel 30 is used to seal the liquid outlet. It is configured to fit the shape of the infusion hose, typically a cylindrical shape. The floating module 40 is connected to the base barrel 30 and extends outward to expand the volume of the check member 20, thereby increasing the contact area between the check member 20 and the liquid, thereby increasing the buoyancy of the check member 20 and ensuring that the check member 20 can be switched from the lower position to the upper position.

[0058] It's worth noting that when the check member 20 is in the lower position, the lower end of the base cartridge 30 passes through the liquid outlet of the drip chamber body 10 and plugs into the infusion hose, thereby achieving a seal. Given the relatively small size of the drip chamber body 10, both the base cartridge 30 and the floating module 40 are constructed from any suitable low-density material to reduce the weight of the check member 20. This ensures that the buoyancy of the floating module 40 is sufficient to support the check member 20 when the check member 20 is in the lower position.

[0059] Alternatively, as Figure 3-Figure 8 As shown, the base cylinder 30 includes an outer cylinder 31 and an inner cylinder 32;

[0060] The outer cylinder 31 is constructed as a cylindrical structure with a closed lower end and an open upper end. The outer surface of the outer cylinder 31 is used to block the liquid outlet. The lower part of the base cylinder 30 is provided with a first hole 301 connected to the outside.

[0061] The inner cylinder 32 is constructed as a cylindrical structure with a closed lower end and an open upper end. The inner cylinder 32 is inserted into the outer cylinder 31 and can slide back and forth along the outer cylinder 31. A second hole 302 is provided at the lower portion of the inner cylinder 32 to communicate with the outside. Accordingly, when the first hole 301 and the second hole 302 are connected, the two form a water outlet.

[0062] A chute 303 and a water channel 304 are provided on the outer circumference of the inner tube 32. A concave buoyancy channel 305 is provided on the bottom surface of the inner tube 32. The lower end of the chute 303 is connected to the water channel 304 through the second hole 302. The water channel 304 is connected to the buoyancy channel 305.

[0063] Accordingly, when the check member 20 is in the lower position, the floating module 40 drives the upper portion of the inner cylinder 32 to deform, thereby forming a water-passing gap 306 between the inner cylinder 32 and the outer cylinder 31. The upper end of the chute 303 communicates with the accommodating chamber 101 through the water-passing gap 306, thereby forming a water channel that guides liquid to the buoyancy tank 305. This causes the inner cylinder 32 and the floating module 40 to move upward, thereby forming a gap between the floating module 40 and the bottom surface of the drip hopper body 10.

[0064] Correspondingly, a limit block 307 inserted into the sliding groove 303 is provided on the inner circumference of the outer cylinder 31 , and the limit block 307 is used to limit the sliding distance of the inner cylinder 32 .

[0065] Based on the above design scheme, the structures of the outer cylinder 31 and the inner cylinder 32 are basically the same. The outer cylinder 31 is taken as an example for explanation: the lower end of the outer cylinder 31 is closed, so when the check member 20 is in the lower working position, the outer cylinder 31 is ensured to be blocked; the upper end of the outer cylinder 31 is open, which helps to reduce the weight on the one hand and facilitates the connection of the inner cylinder 32 on the other hand.

[0066] It is easy to understand that in actual use, due to the open upper end, when the liquid in the infusion bottle drips into the accommodating chamber 101, it is inevitable that the liquid will fall into the base tube 30. At this time, the liquid is discharged in time through the water outlet, reducing the extra weight of the check member 20 and ensuring that the check member 20 floats on the liquid surface.

[0067] When the check member 20 is in the lower position, Figure 2 As shown, the base tube 30 mostly passes through the liquid outlet, and the floating module 40 contacts the bottom surface of the drip chamber body 10, reducing the buoyancy of the floating module 40. Even if some residual liquid remains in the accommodating chamber 101, the buoyancy generated by it is insufficient to overcome the combined weight of the check member 20, the friction between the outer tube 31 and the infusion hose, and atmospheric pressure. This also allows the check member 20 to remain stable in the lower position.

[0068] After replacing the infusion bottle, the infusion bottle replenishes the drip chamber body 10. At this point, the floating module 40 drives the upper portion of the inner cylinder 32 to deform, and liquid flows through the water conduit into the buoyancy groove 305 on the bottom surface of the inner cylinder 32. This increase in liquid volume drives the inner cylinder 32 and the floating module 40 upward, creating a gap between the floating module 40 and the bottom surface of the drip chamber body 10. When the inner cylinder 32 moves upward until it abuts the stop block 307, the inner cylinder 32 and the floating module 40 remain relatively stationary. The liquid volume continues to increase and gradually flows through the water conduit into the gap, thereby increasing the buoyancy of the floating module 40 until the buoyancy drives the outer cylinder 31 away from the liquid outlet, achieving automatic switching of the check member 20's working position.

[0069] When the check member 20 returns to the upper working position, the base cylinder 30 forms a U-shaped tube with the outside world, and the liquid level between the two should be kept at the same height so that the outer cylinder 31 and the inner cylinder 32 move relative to each other until the first hole body 301 and the second hole body 302 are connected and form a water outlet, thereby balancing the height of the liquid level in the base cylinder 30 and the liquid level outside.

[0070] Accordingly, the inner cylinder 32 should be made of elastic material to cooperate with the floating module 40 to achieve deformation, thereby forming a water channel. The chute 303 and the limit block 307 cooperate with each other to prevent the outer cylinder 31 and the inner cylinder 32 from separating from each other.

[0071] It is worth noting that there is some residual liquid in the accommodating cavity 101. After the water conduit is formed, this residual liquid can flow into the outer tube 31 along the water conduit, mix with the infusion fluid in the infusion bottle and drive the inner tube 32 and the floating module 40 to move upward.

[0072] It is worth noting that the contact surface roughness between the outer cylinder 31 and the inner cylinder 32 should be sufficiently small, and the check member 20 is preferably made of a lightweight material to reduce the weight of the check member 20. Based on this, the buoyancy generated by the buoyancy tank 305 can ensure that the buoyancy force can drive the inner cylinder 32 and the floating module 40 upward, so that the floating module 40 is separated from the bottom surface of the drip hopper body 10 and a gap is formed.

[0073] Optionally, at least two water conduits are provided and evenly distributed on the outer circumference of the inner cylinder 32. Based on this, the liquid inlet speed is increased by multiple water conduits to increase the sliding speed of the inner cylinder 32 relative to the outer cylinder 31, thereby improving the efficiency of the check member 20 switching position.

[0074] Optionally, a plurality of limiting ear supports 308 are provided on the outer periphery of the upper end of the outer cylinder 31. When the non-return member 20 is in the lower working position, the outer cylinder 31 passes through the liquid outlet, and the limiting ear supports 308 abut against the bottom surface of the drip bucket body 10. Based on this, when the non-return member 20 is in the lower working position, the limiting ear supports 308 are used to limit the position, thereby avoiding the situation where the floating module 40 completely fits the bottom surface of the drip bucket body 10. On the contrary, since there is residual liquid between the floating module 40 and the bottom surface of the drip bucket body 10, the two will fit tightly due to the surface tension of the liquid, making it difficult for subsequent fluid replenishment to penetrate into the gap between the two. By providing the limiting ear supports 308, the above situation can be avoided and the smooth switching of the working positions of the non-return member 20 can be ensured.

[0075] Alternatively, as Figure 7 and Figure 8 As shown, the floating module 40 includes an outrigger 41 and a buoyancy membrane 42;

[0076] There are a number of outriggers 41 evenly distributed on the outer circumference of the inner cylinder 32. Correspondingly, the outer cylinder 31 is provided with mounting grooves for the outriggers 41 to pass through.

[0077] There are multiple buoyancy membranes 42, and two adjacent outriggers 41 are connected by the buoyancy membranes 42;

[0078] The lower end of the drip bucket body 10 is provided with an inward-retracting section 102. Accordingly, when the check member 20 is located at the lower working position, the multiple outward-extending rods 41 gather toward the inner cylinder 32 under the action of the inward-retracting section 102, so that the upper part of the inner cylinder 32 is deformed to form a water-passing gap 306.

[0079] Based on the above design, the outrigger 41 is used as a skeleton to connect the buoyancy membrane 42 and the inner cylinder 32, and as shown in FIG. Figure 7 As shown, the buoyancy membrane 42 in the floating module 40 occupies most of the space, helping to reduce weight. The buoyancy membrane 42 has a membrane-like structure that helps reduce weight and can be made of any suitable existing material while meeting medical safety requirements.

[0080] Combined with the structure of the base tube 30, it can be seen that when the check member 20 is in the lower working position, the inner tube 32 is driven to deform by the floating module 40. To this end, in conjunction with the up and down floating movement mode of the check member 20, the structure of the drip bucket body 10 is improved. Specifically, the lower end of the drip bucket body 10 is provided with an inward-retracting section 102. Therefore, when the check member 20 moves to the lower working position, the outer end of the outward-extending rod 41 abuts the inward-retracting section 102. Due to the reduction in the inner diameter of the inward-retracting section 102, the outward-extending rod 41 moves toward the inner tube 32. Under the action of the inward-retracting section 102, the multiple outward-extending rods 41 converge toward the inner tube 32, causing the upper portion of the inner tube 32 to deform.

[0081] Based on this, by improving the structure of the drip bucket body 10 and linking it with the movement of the check member 20, the related driving equipment is reduced, the structure is simple, and the energy consumption is low.

[0082] It is worth noting that the end of the extension rod 41 and the inner wall of the drip bucket body 10 should be constructed as a smooth surface to reduce the friction between the two, thereby reducing the resistance when the extension rod 41 floats upward.

[0083] Optionally, the buoyancy membrane 42 has a side for connecting to the extension rod 41. The side has two ends parallel to the extension rod 41, with one end away from the inner cylinder 32 fixedly connected to the extension rod 41 and the end adjacent to the inner cylinder 32 slidably connected to the extension rod 41. Based on this, when the check member 20 moves to the lower working position, the extension rod 41 is pushed by the retracted section 102 of the drip hopper body 10. The buoyancy membrane 42 is difficult to move due to the obstruction of the outer cylinder 31. Therefore, the buoyancy membrane 42 moves relative to the extension rod 41 through the sliding connection, ensuring that the extension rod 41 can move smoothly.

[0084] Alternatively, the buoyancy membrane 42 is made of any suitable elastic material. When the outrigger 41 moves toward the inner tube 32 , the buoyancy membrane 42 deforms to match the movement of the outrigger 41 , thereby simplifying the connection structure between the outrigger 41 and the buoyancy membrane 42 .

[0085] Optionally, the extension rod 41 has two opposing ends, one of which is connected to the inner cylinder 32 and the other abuts the inner wall of the drip hopper body 10. The abutting end of the extension rod 41 is used to guide the sliding of the check member 20. Accordingly, a guide groove adapted for the extension rod 41 is provided on the inner wall of the drip hopper body 10. Based on this, the inner diameter of the inner wall of the drip hopper body 10 is larger except for the inwardly retracted section 102. The extension rod 41 is extended to abut the inner wall of the drip hopper body 10, thereby guiding the movement direction of the check member 20 during its upward and downward movement.

[0086] Optionally, the outrigger 41 is tilted, and the tilt angle of the outrigger 41 is adapted to the tilt angle of the bottom surface of the drip chamber body 10. Based on this, it helps to extend the length of the base barrel 30 passing through the liquid outlet, and also increases the length of the base barrel 30 inserted into the infusion hose, which helps to improve the blocking effect.

[0087] This embodiment introduces an infusion set based on the aforementioned dripping funnel, which includes the aforementioned dripping funnel. Based on the aforementioned design, the infusion set can also include any other suitable functional modules in addition to the aforementioned dripping funnel, providing a more comprehensive functionality to meet diverse work requirements and enhance practicality. As will be readily understood, the functional modules can be selected from any suitable existing equipment, providing a wide range of options.

[0088] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drip funnel, characterized in that: It comprises a drip bucket body (10) and a check piece (20); A receiving chamber (101) is provided in the drip chamber body (10), and a liquid inlet and a liquid outlet are provided at the upper and lower ends of the receiving chamber (101) respectively; The check member (20) is arranged in the accommodating chamber (101) and slides back and forth along the accommodating chamber (101) based on the buoyancy of the liquid, so that the check member (20) has an upper position and a lower position. Accordingly, when the check member (20) is located at the upper position, the check member (20) is located between the liquid inlet and the liquid outlet, and when the check member (20) is located at the lower position, the check member (20) is used to block the liquid outlet.

2. A drip funnel according to claim 1, characterized in that: The check member (20) includes a base cylinder (30) and a floating module (40); The outer surface of the base cylinder (30) is adapted to the liquid outlet and can be used to block the liquid outlet; The floating module (40) is connected to the upper end of the base cylinder (30). Accordingly, when the check member (20) is located at the lower position, the floating module (40) moves upward based on the buoyancy of the liquid and drives the base cylinder (30) to move upward, so that the check member (20) is separated from the lower position.

3. A drip funnel according to claim 2, characterized in that: The base cylinder (30) includes an outer cylinder (31) and an inner cylinder (32); The outer cylinder (31) is constructed as a cylindrical structure with a closed lower end and an open upper end. The outer surface of the outer cylinder (31) is used to block the liquid outlet. The lower part of the base cylinder (30) is provided with a first hole (301) communicating with the outside world. The inner cylinder (32) is constructed as a cylindrical structure with a closed lower end and an open upper end, and the inner cylinder (32) is arranged on the outer cylinder (31) and can slide back and forth along the outer cylinder (31). A second hole (302) communicating with the outside is provided at the lower part of the inner cylinder (32). Accordingly, when the first hole (301) and the second hole (302) are connected, the two form a water outlet. A chute (303) and a water trough (304) are provided on the outer circumference of the inner cylinder (32); a concave buoyancy trough (305) is provided on the bottom surface of the inner cylinder (32); the lower end of the chute (303) is connected to the water trough (304) through the second hole (302); and the water trough (304) is connected to the buoyancy trough (305); Correspondingly, when the check member (20) is located at the lower working position, the floating module (40) drives the upper portion of the inner cylinder (32) to deform, so that a water gap (306) is formed between the inner cylinder (32) and the outer cylinder (31), and the upper end of the chute (303) is connected to the accommodating chamber (101) through the water gap (306) to form a water channel for guiding liquid to the buoyancy tank (305), so that the inner cylinder (32) and the floating module (40) move upward, so that a gap is formed between the floating module (40) and the bottom surface of the drip bucket body (10); Correspondingly, a limit block (307) inserted into the slide groove (303) is provided on the inner circumferential surface of the outer cylinder (31), and the limit block (307) is used to limit the sliding distance of the inner cylinder (32).

4. A drip funnel according to claim 3, characterized in that: At least two water guide channels are provided and are evenly distributed on the outer circumference of the inner cylinder (32).

5. A drip funnel according to claim 4, characterized in that: A plurality of limiting ear supports (308) are provided on the outer periphery of the upper end of the outer cylinder (31). When the check member (20) is located at the lower working position, the outer cylinder (31) passes through the liquid outlet and the limiting ear supports (308) abut against the bottom surface of the drip bucket body (10).

6. A drip funnel according to any one of claims 3 to 5, characterized in that: The floating module (40) includes an outrigger (41) and a buoyancy membrane (42); A plurality of outrigger rods (41) are evenly distributed on the outer periphery of the inner cylinder (32); correspondingly, a mounting groove for the outrigger rods (41) to pass through is provided on the outer cylinder (31); There are multiple buoyancy membranes (42), and two adjacent outriggers (41) are connected via the buoyancy membranes (42); The lower end of the drip bucket body (10) is provided with an inward-retracting section (102). Accordingly, when the check member (20) is located at the lower working position, the plurality of outward-retracting rods (41) gather toward the inner cylinder (32) under the action of the inward-retracting section (102), so that the upper part of the inner cylinder (32) is deformed to form a water-passing gap (306).

7. A drip funnel according to claim 6, characterized in that: The buoyancy membrane (42) has a side for connecting to the outrigger (41), and the side has two ends parallel to the outrigger (41), one end away from the inner tube (32) is fixedly connected to the outrigger (41), and the other end adjacent to the inner tube (32) is slidably connected to the outrigger (41).

8. A drip funnel according to claim 7, characterized in that: The extension rod (41) has two opposite ends, one end of which is connected to the inner cylinder (32) and the other end abuts the inner wall surface of the drip bucket body (10). The abutting end of the extension rod (41) is used to guide the sliding of the check member (20). Accordingly, a guide groove adapted to the extension rod (41) is provided on the inner wall surface of the drip bucket body (10).

9. A drip funnel according to claim 8, characterized in that: The outrigger (41) is arranged to be tilted, and the tilt angle of the outrigger (41) is adapted to the tilt angle of the bottom surface of the drip bucket body (10).

10. An infusion set, characterized in that: The invention comprises the dripping funnel according to any one of claims 1 to 9.

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