A gravity infusion based intravenous drug configuration device

Abstract

The present application belongs to the technical field of intravenous injection, and particularly relates to a gravity infusion-based intravenous drug configuration device, which comprises a gravity driving assembly, a lateral drug supply assembly, an automatic turbulent mixing assembly, a fixed mounting assembly, a bagged infusion assembly and a pressure supply pipe, the gravity driving assembly and the lateral drug supply assembly are connected through the pressure supply pipe, and the automatic turbulent mixing assembly is arranged at a middle position of the bagged infusion assembly. The gravity driving assembly and the lateral drug supply assembly are provided, the gravity of a liquid storage bag is converted into a supply thrust of a medicine in a detachable medicine bottle through a suspender, and a technical purpose that the medicine supply pressure of a lateral medicine supply pipe is reduced with the reduction of the liquid amount in the liquid storage bag is achieved.

Description

Technical Field

[0001] This invention belongs to the field of intravenous injection technology, specifically referring to an intravenous drug preparation device based on gravity infusion. Background Technology

[0002] Gravity infusion is the most common method of intravenous infusion. The drugs to be injected are usually prepared in advance in the IV drip. However, for some drugs with short half-lives or whose dosage needs to be adjusted during infusion, bypass drug delivery is often used.

[0003] Current bypass drug delivery solutions mainly have the following problems: First, bypass drug delivery requires a three-way connector. After the drug enters laterally, it is easy for it to stagnate in the "dead space" of the three-way connector, making it difficult to quickly follow the infusion into the body, resulting in a lag in dosage control. Second, because the drug solution flows horizontally in the pipe, the mixing and dissolution of the drug is based on Brownian motion and natural diffusion, and the diffusion rate is relatively slow. Third, in addition to electric infusion pumps, common automatic side-line pressure supply mainly relies on the pressure difference between the inside and outside of the T-connector. However, as the remaining liquid in the reservoir bag decreases, the pressure in the pipeline will also drop significantly (many drugs are not suitable for contact with air, so currently most use soft infusion bags combined with closed drip chambers). At this time, how to adjust the speed of side-line drug supply accordingly and maintain the drug ratio is also a problem that needs to be solved. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention proposes an intravenous drug preparation device based on gravity infusion. Since the sealed drip chamber is not connected to the outside atmosphere, the gravity of the liquid in the reservoir bag can act on the liquid in the needle through the air in the sealed drip chamber. As the infusion progresses, the pressure in the infusion tube will also decrease when the liquid in the reservoir bag decreases. To reduce the impact of pressure differential fluctuations on the side drug delivery rate, this solution proposes a gravity-driven component and a side-channel drug delivery component. The weight of the storage bag is converted into a supply thrust for the drug in the detachable drug bottle through a boom, achieving the technical objective of reducing the drug delivery pressure of the side delivery tube as the amount of liquid in the storage bag decreases.

[0005] Furthermore, this solution uses water flow in the three-way connector to drive the micro-rotor to rotate, which not only solves the problems of slow Brownian motion diffusion mixing speed and uneven drug distribution, but also turbulence inside the side channel to prevent drug accumulation and retention in the side channel.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an intravenous drug preparation device based on gravity infusion, including a gravity driving component, a side-channel drug delivery component, an automatic flow-disrupting mixing component, a fixed installation component, a bag infusion component, and a pressurized air supply tube. The gravity driving component and the side-channel drug delivery component are connected by the pressurized air supply tube. The automatic flow-disrupting mixing component is located in the middle of the bag infusion component, and the side-channel drug delivery component is located on the side of the automatic flow-disrupting mixing component. The gravity driving component and the side-channel drug delivery component are installed and fixed by the fixed installation component. The side-channel drug delivery assembly includes a detachable drug bottle and a side-channel drug delivery tube. Under pressure, the drug in the detachable drug bottle flows through the side-channel drug delivery tube toward the automatic turbulence mixing assembly.

[0007] The medication in the detachable vial is supplied into the infusion tube via pressure differential, providing better stability for long-term, slow medication delivery than a hand-operated syringe; moreover, its simple structure and significantly lower cost, weight, and portability compared to an electric medication pump.

[0008] Furthermore, the gravity drive assembly includes a gravity air chamber, a gravity pressure plate, and a suspension rod. The gravity pressure plate is engaged, sealed, and slidably disposed in the gravity air chamber. The suspension rod is fixedly connected to the lower part of the gravity pressure plate and is engaged, sealed, and slidably disposed in the gravity air chamber. The bagged infusion assembly is located below the gravity drive assembly.

[0009] The pressure in the detachable medicine bottle comes from the weight of the reservoir bag below the boom. As the amount of liquid in the reservoir bag decreases, the liquid pressure in the infusion tube and the liquid pressure in the side drug delivery tube will decrease, thereby maintaining a stable pressure difference on both sides of the side channel and reducing fluctuations in the side drug delivery rate during the infusion process.

[0010] Preferably, the detachable medicine bottle is provided with an upper interface, and the two ends of the compressed air supply pipe are respectively located at the bottom of the gravity air chamber and in the upper interface. The detachable medicine bottle is also provided with a lower interface, and one end of the side medicine supply pipe is located in the lower interface.

[0011] Furthermore, the automatic turbulence mixing assembly includes a three-way connector, the three-way connector is provided with a side channel, the other end of the side drug supply pipe is located in the side channel, and the end of the side drug supply pipe near the side channel is provided with a one-way valve.

[0012] Preferably, the automatic flow-disrupting mixing assembly further includes a rotating shaft and a micro-rotor. The rotating shaft is rotatably disposed in the side channel, and the micro-rotor is fixed to the rotating shaft. The micro-rotor is provided with flow-disrupting blades evenly distributed in a ring on it. When the water flows through the tee joint, it can drive the flow-disrupting blades to rotate.

[0013] When the liquid in the infusion tube flows through the T-connector, it drives the miniature impeller to rotate. The rotating baffles can agitate the liquid in the side channel, preventing the drug entering from the side supply tube from remaining stationary in the side channel and affecting the accuracy of dosage control.

[0014] The rotating baffle blades can also fully mix the drug and the liquid in the infusion tube, solving the problem that the drug diffusion speed is slow and the concentration distribution is uneven when relying solely on Brownian motion.

[0015] Furthermore, the fixed installation assembly includes an air chamber fixing plate, on which a first bracket is provided, and the gravity air chamber is fixedly connected to the first bracket.

[0016] Preferably, the fixed installation assembly further includes a dosing fixing plate, a second bracket is provided on the dosing fixing plate, the tee connector is fixed in the second bracket, and a third bracket is also provided on the dosing fixing plate, the detachable medicine bottle is detachably disposed in the third bracket.

[0017] Furthermore, the bagged infusion assembly includes a reservoir bag, the top of which is provided with a lifting ring, and the bottom of the lifting rod is provided with a barb, the lifting ring being fitted onto the barb.

[0018] Preferably, the bagged infusion assembly further includes an infusion tube, the top end of which is located in a storage bag, a sealed drip chamber is provided on the infusion tube, and the tee connector is located in the middle of the infusion tube and communicates with the infusion tube.

[0019] A sealed drip chamber is not connected to the outside atmosphere, and the gas inside the sealed drip chamber will transmit the liquid pressure in the storage bag to the needle.

[0020] As a further preferred embodiment of the present invention, the gravity pressure plate is provided with an air replenishment valve, and the bagged infusion assembly is provided with a one-way valve near the upper interface.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The drug in the detachable medicine bottle is supplied into the infusion tube through pressure difference, and the stability of long-term slow drug supply is better than that of hand-push syringe; and the structure is simple, and the cost, weight and portability are much smaller than electric drug pump.

[0022] (2) The pressure in the detachable medicine bottle comes from the weight of the reservoir bag under the boom. As the amount of liquid in the reservoir bag decreases, the liquid pressure in the infusion tube and the liquid pressure in the side drug supply tube will decrease, thereby maintaining the pressure difference between the two sides of the side channel and reducing the fluctuation of the side drug supply rate during the infusion process.

[0023] (3) When the liquid in the infusion tube flows through the three-way connector, it will drive the micro-rotor to rotate. The rotating turbulence blades can agitate the liquid in the side channel, preventing the drug entering from the side supply tube from remaining stationary in the side channel and affecting the accuracy of dosage control.

[0024] (4) The rotating turbulence blades can also fully mix the drug and the liquid in the infusion tube, solving the problem that the drug diffusion speed is slow and the concentration distribution is uneven when it relies solely on Brownian motion. Attached Figure Description

[0025] Figure 1 This is a perspective view of an intravenous drug preparation device based on gravity infusion proposed in this invention; Figure 2 This is a front view of an intravenous drug preparation device based on gravity infusion proposed in this invention; Figure 3 This is a left view of an intravenous drug preparation device based on gravity infusion proposed in this invention; Figure 4 This is a top view of an intravenous drug preparation device based on gravity infusion proposed in this invention; Figure 5 for Figure 3 A cross-sectional view along section line AA; Figure 6 This is an exploded structural diagram of an intravenous drug preparation device based on gravity infusion proposed in this invention. Figure 7 for Figure 5 A magnified view of a section at point I; Figure 8 for Figure 6 Enlarged view of a section at point II; Figure 9 for Figure 5 A magnified view of a section at point III.

[0026] The components include: 1. Gravity-driven assembly; 2. Side-channel drug delivery assembly; 3. Automatic turbulence mixing assembly; 4. Fixed installation assembly; 5. Bag infusion assembly; 6. Gas supply tube; 11. Gravity air chamber; 12. Gravity pressure plate; 13. Hanging rod; 21. Detachable medicine bottle; 22. Side drug delivery tube; 31. T-connector; 32. Rotating shaft; 33. Miniature rotating wheel; 41. Air chamber fixing plate; 42. Drug delivery fixing plate; 51. Storage bag; 52. Infusion tube; 121. Gas replenishment valve; 131. Barb; 211. Upper interface; 212. Lower interface; 311. Side channel; 331. Turbulence vane; 411. First support; 421. Second support; 422. Third support; 511. Hanging ring; 521. Sealed drip chamber.

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] like Figures 1-9 As shown, the present invention proposes an intravenous drug preparation device based on gravity infusion, including a gravity drive component 1, a side-channel drug delivery component 2, an automatic flow-disrupting mixing component 3, a fixed installation component 4, a bag infusion component 5, and a compressed air supply tube 6. The gravity drive component 1 and the side-channel drug delivery component 2 are connected by the compressed air supply tube 6. The automatic flow-disrupting mixing component 3 is located in the middle of the bag infusion component 5, and the side-channel drug delivery component 2 is located on the side of the automatic flow-disrupting mixing component 3. The gravity drive component 1 and the side-channel drug delivery component 2 are installed and fixed by the fixed installation component 4. The side-channel drug delivery assembly 2 includes a detachable drug bottle 21 and a side-channel drug delivery tube 22. The drug in the detachable drug bottle 21 flows through the side-channel drug delivery tube 22 towards the automatic turbulence mixing assembly 3 under pressure.

[0031] The medication in the detachable vial 21 is supplied into the infusion tube 52 via pressure differential, and its stability for long-term slow medication supply is better than that of a hand-operated syringe; moreover, its structure is simple, and its cost, weight and portability are far less than those of an electric medication pump.

[0032] The gravity drive assembly 1 includes a gravity air chamber 11, a gravity pressure plate 12, and a hanging rod 13. The gravity pressure plate 12 is engaged, sealed, and slidably disposed in the gravity air chamber 11. The hanging rod 13 is fixed to the bottom of the gravity pressure plate 12 and is engaged, sealed, and slidably disposed in the gravity air chamber 11. The bagged infusion assembly 5 is located below the gravity drive assembly 1.

[0033] The pressure in the detachable medicine bottle 21 comes from the weight of the reservoir bag 51 below the boom 13. As the amount of liquid in the reservoir bag 51 decreases, the liquid pressure in the infusion tube 52 and the liquid pressure in the side drug supply tube 22 will both decrease, thereby maintaining a stable pressure difference on both sides of the side channel 311 and reducing fluctuations in the side drug supply rate during the infusion process.

[0034] The detachable medicine bottle 21 is provided with an upper interface 211, and the two ends of the compressed air supply pipe 6 are respectively located at the bottom of the gravity air chamber 11 and in the upper interface 211. The detachable medicine bottle 21 is also provided with a lower interface 212, and one end of the side medicine supply pipe 22 is located in the lower interface 212.

[0035] The automatic turbulence mixing assembly 3 includes a three-way connector 31, a side channel 311 on the three-way connector 31, and the other end of the side drug supply pipe 22 is located in the side channel 311. A one-way valve is provided at the end of the side drug supply pipe 22 near the side channel 311.

[0036] The automatic flow mixing assembly 3 also includes a rotating shaft 32 and a micro-rotor 33. The rotating shaft 32 is rotatably disposed in the side channel 311, and the micro-rotor 33 is fixedly connected to the rotating shaft 32. The micro-rotor 33 is provided with flow-dispersing blades 331 evenly distributed in a ring on the micro-rotor 33. When the water flows through the three-way connector 31, it can drive the flow-dispersing blades 331 to rotate.

[0037] When the liquid in the infusion tube 52 flows through the three-way connector 31, it will drive the micro-rotor 33 to rotate. The rotating baffle 331 can agitate the liquid in the side channel 311, preventing the drug entering from the side drug supply tube 22 from remaining stationary in the side channel 311 and affecting the accuracy of dosage control.

[0038] The rotating baffle blades 331 can also fully mix the drug and the liquid in the infusion tube 52, solving the problem that the drug diffusion speed is slow and the concentration distribution is uneven when relying solely on Brownian motion.

[0039] The fixed installation assembly 4 includes an air chamber fixing plate 41, on which a first bracket 411 is provided, and the gravity air chamber 11 is fixedly connected to the first bracket 411.

[0040] The fixed installation assembly 4 also includes a dosing fixing plate 42, on which a second bracket 421 is provided, and a three-way connector 31 is fixedly connected to the second bracket 421. The dosing fixing plate 42 is also provided with a third bracket 422, and the detachable medicine bottle 21 is detachably installed in the third bracket 422.

[0041] The bagged infusion assembly 5 includes a storage bag 51, with a hanging ring 511 at the top of the storage bag 51 and a barb 131 at the bottom of the hanging rod 13. The hanging ring 511 is fitted onto the barb 131.

[0042] The bagged infusion assembly 5 also includes an infusion tube 52, the top of which is located in the storage bag 51. A sealed drip chamber 521 is provided on the infusion tube 52, and a three-way connector 31 is located in the middle of the infusion tube 52 and is connected to the infusion tube 52.

[0043] The sealed drip chamber 521 is not connected to the outside atmosphere. The gas in the sealed drip chamber 521 will transmit the liquid pressure in the storage bag 51 to the needle.

[0044] The gravity pressure plate 12 is equipped with an air replenishment valve 121, and the bagged infusion assembly 5 is equipped with a one-way valve near the upper interface 211.

[0045] In practical use, the operator first needs to fix the position of the gravity drive component 1, the side-path drug supply component 2 and the automatic turbulence mixing component 3 by using the air chamber fixing plate 41 and the drug dosing fixing plate 42. Then, the liquid storage bag 51 is hung below the hanging rod 13 by the hanging ring 511. After connecting the air tube and the liquid tube, the infusion begins.

[0046] The gravity chamber 11 contains a specific gas that can come into contact with the medicine in the detachable medicine bottle 21, which is mostly an inert gas with oxygen removed. The liquid storage bag 51 acts on the boom 13 and applies downward pressure to the gravity pressure plate 12. Therefore, the gas in the gravity air chamber 11 enters the detachable medicine bottle 21 through the pressure supply pipe 6 and applies downward pressure to the liquid surface in the detachable medicine bottle 21. This allows the liquid in the detachable medicine bottle 21 to overcome the water pressure in the three-way connector 31 and enter the side channel 311 through the one-way valve at the end of the side medicine supply pipe 22, thus realizing the side-path addition of the medicine.

[0047] When the liquid in the infusion tube 52 flows through the tee connector 31, it can drive the micro-rotor 33 to rotate. This not only disturbs the inside of the side channel 311, preventing the medicine added from the side from remaining statically in the side channel 311, but also fully mixes the medicine and improves its uniformity of distribution in the liquid.

[0048] As the amount of liquid in the reservoir bag 51 decreases, the liquid pressure in the infusion tube 52 also decreases. If the pressure in the detachable medicine bottle 21 remains unchanged, the dosage will increase. However, in this scheme, the pressure in the detachable medicine bottle 21 comes from the gravity pressure plate 12 (that is, the gravity in the liquid storage bag 51), so it will decrease as the amount of liquid in the liquid storage bag 51 decreases. The pressure change trend on both sides of the side channel 311 is the same, so the pressure difference can be basically maintained and thus reduce the fluctuation of the drug addition rate.

[0049] Since the dosage in the detachable medicine bottle 21 is very small, the amount of gas entering the detachable medicine bottle 21 from the gravity gas chamber 11 during the drug addition process is also very small. Therefore, the gas in the gravity gas chamber 11 is enough for multiple rounds of infusion. After the gas in the gravity gas chamber 11 is consumed, it can be replenished through the gas replenishment valve 121.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A gravity-based intravenous drug preparation device, comprising a bagged infusion assembly (5), the bagged infusion assembly (5) comprising a reservoir bag (51) and an infusion tubing (52), characterized in that: It also includes a gravity drive assembly (1), a side-channel drug delivery assembly (2), an automatic flow mixing assembly (3), a fixed installation assembly (4), and a compressed air supply pipe (6). The gravity drive assembly (1) and the side-channel drug delivery assembly (2) are connected by the compressed air supply pipe (6). The automatic flow mixing assembly (3) is located in the middle of the bagged infusion assembly (5). The side-channel drug delivery assembly (2) is located on the side of the automatic flow mixing assembly (3). The gravity drive assembly (1) and the side-channel drug delivery assembly (2) are installed and fixed by the fixed installation assembly (4). The side-channel drug delivery assembly (2) includes a detachable drug bottle (21) and a side-channel drug delivery tube (22). The drug in the detachable drug bottle (21) flows through the side-channel drug delivery tube (22) towards the automatic turbulence mixing assembly (3) under pressure.

2. The intravenous drug preparation device based on gravity infusion according to claim 1, characterized in that: The gravity drive assembly (1) includes a gravity air chamber (11), a gravity pressure plate (12), and a hanging rod (13). The gravity pressure plate (12) is engaged, sealed, and slidably disposed in the gravity air chamber (11). The hanging rod (13) is fixedly connected to the lower part of the gravity pressure plate (12). The hanging rod (13) is engaged, sealed, and slidably disposed in the gravity air chamber (11). The bagged infusion assembly (5) is located below the gravity drive assembly (1).

3. The intravenous drug preparation device based on gravity infusion according to claim 2, characterized in that: The detachable medicine bottle (21) is provided with an upper interface (211), and the two ends of the compressed air supply pipe (6) are respectively located at the bottom of the gravity air chamber (11) and in the upper interface (211). The detachable medicine bottle (21) is also provided with a lower interface (212), and one end of the side medicine supply pipe (22) is located in the lower interface (212).

4. The intravenous drug preparation device based on gravity infusion according to claim 3, characterized in that: The automatic turbulence mixing assembly (3) includes a three-way connector (31), a side channel (311) is provided on the three-way connector (31), the other end of the side drug supply pipe (22) is located in the side channel (311), and a one-way valve is provided at the end of the side drug supply pipe (22) near the side channel (311).

5. The intravenous drug preparation device based on gravity infusion according to claim 4, characterized in that: The automatic flow mixing assembly (3) also includes a rotating shaft (32) and a micro-rotor (33). The rotating shaft (32) is rotatably disposed in the side channel (311). The micro-rotor (33) is fixed to the rotating shaft (32). The micro-rotor (33) is provided with flow-dispersing blades (331) evenly distributed in a ring on the micro-rotor (33). When the water flows through the three-way connector (31), it can drive the flow-dispersing blades (331) to rotate.

6. The intravenous drug preparation device based on gravity infusion according to claim 5, characterized in that: The fixed installation assembly (4) includes an air chamber fixing plate (41), on which a first bracket (411) is provided, and the gravity air chamber (11) is fixed in the first bracket (411).

7. The intravenous drug preparation device based on gravity infusion according to claim 6, characterized in that: The fixed installation assembly (4) also includes a drug dosing fixing plate (42), on which a second bracket (421) is provided, and the three-way connector (31) is fixed in the second bracket (421). The drug dosing fixing plate (42) is also provided with a third bracket (422), and the detachable medicine bottle (21) is detachably installed in the third bracket (422).

8. The intravenous drug preparation device based on gravity infusion according to claim 7, characterized in that: The top of the liquid storage bag (51) is provided with a lifting ring (511), and the bottom of the lifting rod (13) is provided with a barb (131). The lifting ring (511) is fitted onto the barb (131).

9. The intravenous drug preparation device based on gravity infusion according to claim 8, characterized in that: The top end of the infusion tube (52) is located in the storage bag (51), and a closed drip chamber (521) is provided on the infusion tube (52). The three-way connector (31) is located in the middle of the infusion tube (52) and is connected to the infusion tube (52).

10. The intravenous drug preparation device based on gravity infusion according to claim 9, characterized in that: The gravity pressure plate (12) is equipped with an air replenishment valve (121), and the bagged infusion assembly (5) is equipped with a one-way valve near the upper interface (211).

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