Flow rate adjustable analgesic pump

Abstract

The application provides a flow rate adjustable analgesic pump and relates to the technical field of medical devices. The analgesic pump comprises a main body with a cavity; a medicine containing structure and a pressurizing structure are arranged in the main body; the medicine containing structure is connected with a first infusion tube; wherein the medicine containing structure comprises at least a soft capsule; the pressurizing structure is movably connected with the inner wall of the main body and can move between a first position and a second position; the pressurizing structure does not contact the medicine containing structure in the first position; the pressurizing structure can contact the capsule and apply pressure to the capsule in the second position. The analgesic pump can flexibly adjust the drug infusion flow rate, meet the analgesic needs of patients after different operations, has a wide clinical application prospect, and helps to improve the postoperative comfort and life quality of patients.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a flow rate adjustable analgesia pump. BACKGROUND

[0002] Analgesia pumps play an important role in the medical field, especially in the management of postoperative pain. By continuously and stably infusing analgesic drugs, it helps patients maintain a relatively constant drug concentration during the postoperative recovery period, effectively relieving pain and improving patient comfort and quality of life.

[0003] Traditional analgesia pumps are usually equipped with basic flow control devices, allowing medical staff to set the drug infusion rate according to the patient's needs. However, there are limitations to the maximum flow rate, which cannot effectively meet the needs of patients during the peak postoperative pain period.

[0004] Postoperative pain is often fluctuating, especially in the early postoperative period, patients may experience severe pain. During this period, a fixed maximum flow rate may not provide sufficient analgesic effect, causing patients to feel uncomfortable. In order to relieve pain, patients often need to rely on additional analgesic drugs, increasing the complexity of the treatment process and may lead to improper or excessive use of drugs, causing side effects or drug dependence.

[0005] Early multi-flow rate infusion pumps achieve multi-flow rate effect by clamping silicone tubes, which improves the flexibility of drug infusion to some extent, but also exposes some defects. First, the silicone tube clamped for a long time is prone to deformation, causing pipe blockage, affecting drug flow, and unable to effectively relieve pain. Second, the silicone tube is relatively fragile and prone to breakage during use, increasing the risk of drug leakage, affecting the analgesic effect and may cause safety hazards.

[0006] Early multi-flow rate infusion pumps have emerged. This type of device clamps silicone tubes through a switching mechanism, trying to achieve multi-flow rate effect. Although this design improves the flexibility of drug infusion to some extent, its defects have gradually emerged. First, the silicone tube clamped for a long time is prone to deformation, causing pipe blockage, which seriously affects the flow of drugs and cannot effectively relieve the pain of patients. Second, the fragile nature of the silicone tube makes it prone to breakage during use, significantly increasing the risk of drug leakage, which not only affects the analgesic effect of patients, but also may cause a series of safety hazards.

[0007] In summary, how to provide a flow rate adjustable analgesia pump is a technical problem that needs to be solved at present. SUMMARY

[0008] The present application aims to overcome the deficiencies of the prior art, and provides a flow rate adjustable analgesic pump, which changes the position of the pressurizing structure relative to the medicine containing structure to apply different pressure to the medicine containing structure, promotes the medicine containing structure to deform, changes the internal pressure, and thus changes the outflow speed of the internal liquid.

[0009] The present application provides a flow rate adjustable analgesic pump, which comprises a main body with a cavity.

[0010] The main body is provided with a medicine containing structure and a pressurizing structure.

[0011] The medicine containing structure is connected with a first infusion tube.

[0012] The medicine containing structure comprises a soft capsule.

[0013] The pressurizing structure is movably connected with the inner wall of the main body and can move between a first position and a second position; in the first position, the pressurizing structure does not contact the medicine containing structure; in the second position, the pressurizing structure can contact the capsule and apply pressure to the capsule.

[0014] Further, the medicine containing structure further comprises a base below the capsule, and the base is connected in communication with the first infusion tube.

[0015] Further, the pressurizing structure comprises a cover corresponding to the medicine containing structure and capable of covering the medicine containing structure.

[0016] Further, the analgesic pump further comprises an adjusting structure for changing the position of the pressurizing structure relative to the medicine containing structure.

[0017] Further, the adjusting structure comprises a load bearing structure arranged on the cover; the load bearing structure contains liquid.

[0018] The adjusting structure further comprises a liquid storage bin arranged in the main body above the pressurizing structure; the liquid storage bin contains liquid and is connected in communication with the load bearing structure through the first infusion tube; the liquid flows between the liquid storage bin and the load bearing structure to change the weight of the load bearing structure, thereby driving the pressurizing structure to move up and down in the main body; a one-way valve is arranged on the first infusion tube to control the flow of the liquid.

[0019] Further, the load bearing structure and the liquid storage bin are both elastic; the liquid storage bin is partially exposed on the top of the main body.

[0020] Further, the load bearing structure and the liquid storage bin are both inelastic; the load bearing structure is connected in communication with a first extrusion part which is higher than the load bearing structure, the first extrusion part contains gas and extends to the outside of the main body.

[0021] The second extrusion part in communication with the liquid storage bin is internally provided with gas and extends to the outside of the main body.

[0022] Further, the load-bearing structure is in communication with the liquid storage bin through a second infusion tube and a third infusion tube; wherein the connection end of the second infusion tube is higher than the liquid level in the liquid storage bin, and the connection end of the third infusion tube is lower than the liquid level in the liquid storage bin, and one-way valves are arranged on the second infusion tube and the third infusion tube.

[0023] Further, a horizontal bubble instrument is arranged in the main body.

[0024] Further, the shell is at least partially transparent.

[0025] Compared with the prior art, the present application has the following advantages and positive effects as an example:

[0026] The design of the soft capsule can realize more stable and persistent drug infusion.

[0027] Through the cooperation of the pressurizing structure and the adjusting structure, patients or medical staff can flexibly adjust the drug infusion flow rate according to different pain conditions. Patients can immediately increase drug infusion during the peak of pain, which helps to reduce the need for additional analgesic drugs, thereby reducing the risk of drug overdose or dependence, reducing the occurrence of side effects, providing personalized pain management, meeting the analgesic needs of patients in different scenarios and time periods, and effectively alleviating postoperative pain.

[0028] The analgesic pump has good adaptability in design and can meet the needs of different postoperative patients. It is suitable for various types of operations and postoperative recovery processes, not only improves the analgesic effect, but also optimizes safety, reliability and convenience, has a wide clinical application prospect, and helps to improve the postoperative comfort and quality of life of patients. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The structure diagram of the analgesic pump provided by the present application.

[0030] Figure 2 The structure diagram of the analgesic pump provided by the present application, which is another embodiment.

[0031] Figure 3 The structure diagram of the analgesic pump provided by the present application, which is another embodiment.

[0032] REFERENCE SIGNS

[0033] The analgesic pump 100 with adjustable flow rate;

[0034] The main body 200;

[0035] The medicine containing structure 300, the capsule 310, the base 320;

[0036] The pressurizing structure 400, the cover 410, the movable connecting piece 420;

[0037] The liquid storage 500, the bearing structure 510, the first extruding part 520, the second extruding part 530;

[0038] The horizontal bubble instrument 600;

[0039] The first infusion tube 10, the second infusion tube 11, the third infusion tube 12, the one-way valve 13. DETAILED DESCRIPTION

[0040] The technical scheme disclosed by the application will be described in detail below with reference to specific embodiments.

[0041] The technology and method known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the technology and method should be considered as part of the specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments can have different values.

[0042] The application provides a flow rate adjustable analgesic pump 100, as shown in the figure, comprising a main body 200 with a cavity. Figures 1-3

[0043] Optionally, the main body 200 is at least partially transparent, facilitating observation of the internal condition.

[0044] The main body 200 is provided with a medicine containing structure 300 containing medicine,

[0045] As shown in the figure, the medicine containing structure 300 at least comprises a soft capsule 310 containing medicine. Figure 1

[0046] The capsule 310 is made of medical polyurethane, medical silicone, medical TPE, medical PP, medical PE, etc. as an example but not limited.

[0047] The capsule is provided with a liquid level sensor for monitoring the remaining amount of medicine in the capsule. The liquid level sensor is arranged at a relatively lower position in the capsule. When the liquid level reaches this position, the liquid level sensor sends a signal to the alarm arranged on the shell or the separately arranged external alarm, prompting to supplement the medicine.

[0048] Further, the capsule can be transparent or translucent, facilitating direct observation of the internal medicine condition. ​​

[0049] The air bag 310 can be supplemented with liquid medicine by setting an injection port (not shown in the figure) on the shell, which is connected to the air bag through the first infusion tube 10, and the user directly injects the liquid medicine into the air bag 310 through the syringe. The injection port can be equipped with a sealing device to prevent leakage and contamination of the liquid medicine when not in use.

[0050] The air bag 310 can also be connected to an external infusion device, and the user can transport the liquid medicine into the air bag through the first infusion tube 10 when needed. This method is suitable for long-term infusion of liquid medicine, and is convenient for continuous monitoring and management of the inflow of liquid medicine.

[0051] In another embodiment, as shown in Figure 2 and 3 , the medicine storage structure also includes a hollow base 320 below the air bag.

[0052] Compared with the air bag 310, the base 320 is a hard structure and can raise the position of the air bag relative to the bottom of the shell.

[0053] The medicine storage structure 300 is connected with the first infusion tube 10, that is, the air bag 310 or the base 320 is connected with the first infusion tube 10 through the hole in the inside of the main body 200.

[0054] The main body 200 is provided with a pressurizing structure 400.

[0055] The pressurizing structure 400 is movably connected with the inner wall of the main body 200, and can move between the first position and the second position.

[0056] The movable connection mode includes but is not limited to sliding connection, hinged connection, spring connection, gear connection, magnetic connection, flexible connection, etc.

[0057] Taking sliding connection as an example, as shown in Figure 2 , the pressurizing structure 400 is provided with movable connection pieces 420, i.e. pulleys or sliding blocks, on both sides, and the inside of the main body 200 is correspondingly provided with sliding rails.

[0058] Taking hinged connection as an example, at least one side of the pressurizing structure 400 is provided with a hinged connection point, so that the pressurizing structure 400 can freely rotate within a certain angle centering on the hinged connection point, thereby moving between the first position and the second position.

[0059] Taking spring connection as an example, a spring is arranged between the pressurizing structure 400 and the top of the main body 200, and the position of the pressurizing structure 400 in the main body 200, especially the longitudinal direction, is changed by the extension and contraction of the spring.

[0060] Taking magnetic connection as an example, magnets are installed on both the pressurizing structure 400 and the inner wall of the main body 200 , and the pressurizing structure 400 moves on the inner wall of the main body 200 by using the attraction or repulsion of magnetic force.

[0061] Taking the flexible connection as an example, a flexible connector is provided between the pressurizing structure 400 and the inner wall of the main body 200 , and the pressurizing structure 400 can be moved within a certain range by utilizing the deformation of the flexible connector.

[0062] In this embodiment, Figures 1-3 As shown, the pressurizing structure 400 includes a cover 410 that is arranged corresponding to the drug containing structure 300 and can be covered on the drug containing structure 300 .

[0063] By way of example and not limitation, Figure 1 The shape of the pressurizing structure 400 can be set to match the outer contour of the drug container structure 300 , so as to wrap the drug container structure 300 .

[0064] In the case where the drug containing structure 300 includes a capsule 310 and a base 320, the shape of the pressurizing structure 400 is set to match the shape of the upper portion of the capsule 310 with the outline of the capsule 310, and the shape of the lower portion of the base 320 with the outer outline of the base 320, such as Figure 2 and 3 .

[0065] Other shapes are also possible. For example, the pressurizing structure 400 is rectangular, and the length and width are set to be sufficient to cover the entire drug container structure 300.

[0066] Of course, the drug container structure 300 does not need to be wrapped as a whole. Other shapes that can wrap and cover the top portion of the capsule 310 are also acceptable, such as a downwardly curved arc, a hemispherical shape with the arc surface facing upward, or a spherical shape.

[0067] In the first position, the pressurizing structure 400 does not contact the drug container structure 300 , and there is a certain distance between the pressurizing structure 400 and the drug container structure 300 .

[0068] In the second position, the pressurizing structure 400 can contact the capsule 310 and apply pressure to the capsule 310. The inner top of the pressurizing structure 400 contacts the highest point of the capsule 310, applying downward pressure to the capsule 310, so that the capsule 310 is squeezed and deformed.

[0069] Generally speaking, the first position is higher than the second position.

[0070] The range of the first position includes the highest point of the movable range of the pressurizing structure 400 in the main body 200 to the position where the pressurizing structure 400 is closest to the highest point of the bladder 310 but has not yet released the bladder 310 .

[0071] The range of the second position includes the position where the pressing structure 400 just contacts the highest point of the capsule 310, to the position where the pressing structure 400 reaches the lowest point of the range of movement within the main body 200.

[0072] The lower the position of the pressing structure 400 within the main body 200, i.e. the smaller the distance between the pressing structure 400 and the bottom of the main body 200, the greater the pressure exerted on the capsule 310, the more serious the deformation of the capsule 310, and the greater the internal pressure, and the liquid inside will flow out more quickly.

[0073] The adjustment structure is also included to change the position of the pressing structure 400 relative to the capsule 310.

[0074] The adjustment structure includes a load-bearing structure 510 arranged on the aforementioned cover 410, and the load-bearing structure 510 contains liquid.

[0075] The adjustment structure includes at least one load-bearing structure 510. When one is arranged, as shown in Figure 1 The load-bearing structure 510 is arranged on one side of the pressing structure 400.

[0076] Alternatively, as shown in Figure 2 and 3 The load-bearing structure 510 is arranged on both sides of the pressing structure 400, and is symmetrically arranged at the lower end of the outside of the cover 410. In addition, it can also be arranged at the middle or upper end of the outside of the cover 410, and the symmetry is not limited.

[0077] Of course, the load-bearing structure 510 can also be arranged on the inside of the cover 410.

[0078] Because the aforementioned pressing structure 400 and the main body 200 are movably connected, the load-bearing structure 510 can be arranged on the inside and outside of the cover 410, and can not need to be connected to the inner wall of the main body 200.

[0079] Of course, the load-bearing structure 510 on the outside can also be movably connected to the inner wall of the main body 200.

[0080] The adjustment structure also includes a liquid storage tank 500 arranged in the main body 200 above the pressing structure 400, and the liquid storage tank 500 contains liquid and is connected to the aforementioned load-bearing structure 510 through a first liquid conveying pipe 10.

[0081] A one-way valve 13 is arranged on the first liquid conveying pipe 10, and the one-way valve 13 is opened to allow the liquid to pass through.

[0082] The opening and closing of the one-way valve 13 can be controlled by a switch arranged on the outside of the main body 200, or by an external remote controller.

[0083] Assuming that the total weight of the load bearing structure 510 is X when the pressurizing structure 400 is in the first position. When the liquid flows between the liquid storage 500 and the load bearing structure 510, the total weight of the load bearing structure 510 will increase to X+ΔX when the liquid in the liquid storage 500 flows into the load bearing structure 510, where ΔX is the weight of the liquid flowing in. The increased weight will generate a downward force on the pressurizing structure 400, causing the pressurizing structure 400 to move downward until it reaches the second position in contact with the capsule 310, at which point the total weight is assumed to be Y.

[0084] Conversely, after the pressurizing structure 400 reaches the second position, if the liquid in the load bearing structure 510 flows into the liquid storage 500, the total weight of the load bearing structure 510 will decrease to Y-ΔY, where ΔY is the weight of the liquid flowing out. As the load bearing structure 510 lightens, the downward force on the pressurizing structure 400 decreases, causing the pressurizing structure 400 to begin moving upward until it reaches a new equilibrium position or returns to the original first position.

[0085] The manner of driving the liquid flow mainly includes the following two ways:

[0086] First, as shown in Figure 1 and 2 , the load bearing structure 510 and the liquid storage 500 are both elastic and can deform when subjected to external force, and the liquid storage 500 and the load bearing structure 510 are both partially exposed on the top of the main body 200 to serve as the pressure application surface.

[0087] Specifically, when the user needs to reduce the total weight of the load bearing structure 510, the user squeezes the load bearing structure 510 inward. Due to its elastic properties, the load bearing structure 510 deforms, causing the liquid inside the load bearing structure 510 to enter the first liquid delivery pipe 10 and flow to the connected liquid storage 500.

[0088] Conversely, when the user needs to increase the total weight of the load bearing structure 510, the user only needs to open the one-way valve 13 and then squeeze the liquid storage 500 inward. Due to its elastic properties, the liquid storage 500 deforms, causing the liquid inside the liquid storage 500 to enter the first liquid delivery pipe 10 and flow to the connected load bearing structure 510.

[0089] In specific implementation, the first liquid delivery pipe 10 can also be separately provided according to different liquid flow directions.

[0090] In another embodiment, the load bearing structure 510 and the liquid storage 500 are both not elastic.

[0091] As shown in Figure 3 , the load bearing structure 510 is connected to a first squeezing portion 520 that is higher than the load bearing structure. The first squeezing portion 520 contains gas inside and extends to the outside of the main body 200.

[0092] The liquid storage tank 500 is connected with a second extrusion part 530 which is higher than the liquid storage tank, and the second extrusion part contains gas inside and extends to the outside of the main body.

[0093] The load-bearing structure is connected with the liquid storage tank through a second infusion tube 11 and a third infusion tube 12; wherein the connection end of the second infusion tube 11 is higher than the liquid level in the liquid storage tank, and the connection end of the third infusion tube 12 is lower than the liquid level in the liquid storage tank, and the second first infusion tube 10 and the third first infusion tube 10 are both provided with a one-way valve 13.

[0094] In the case that the first extrusion part 520 contains gas inside, when extruding, the pressure of the gas inside the first extrusion part 520 increases, and the pressure of the gas is transmitted to the inside of the load-bearing structure 510 which is connected with the first extrusion part 520, and because the first extrusion part 520 is higher than the load-bearing structure, the liquid will not mistakenly enter the first extrusion part.

[0095] The pressure transmitted by the first extrusion part to the inside of the load-bearing structure forces the liquid in the load-bearing structure to enter the liquid storage tank through the second first infusion tube 10, and because the connection end of the second infusion tube 11 is higher than the liquid level in the liquid storage tank, and the one-way valve on the second first infusion tube 10 is set to only allow the liquid to flow from the load-bearing structure to the liquid storage tank, the liquid in the liquid storage tank will not flow back into the load-bearing structure.

[0096] On the contrary, when extruding the second extrusion part 530, the pressure of the gas is transmitted to the inside of the liquid storage tank 500 which is connected with the second extrusion part 520, and because the second extrusion part 530 is higher than the liquid storage tank 500, the liquid in the liquid storage tank will not mistakenly enter the second extrusion part.

[0097] The pressure transmitted by the second extrusion part to the inside of the liquid storage tank forces the liquid in the liquid storage tank to enter the liquid storage tank through the third infusion tube 12, and because the connection end of the third infusion tube 12 is lower than the liquid level in the liquid storage tank, and the one-way valve on the third infusion tube 12 is set to only allow the liquid to flow from the liquid storage tank to the load-bearing structure, the liquid in the load-bearing structure will not flow back into the liquid storage tank.

[0098] Optionally, as shown in the figure, a horizontal bubble instrument 600 is arranged in the main body, which helps to ensure the horizontal state of the device during use, thereby further ensuring the accuracy and effectiveness of drug infusion. Figure 2

[0099] ​Within the scope of the target protection of the present disclosure, terms like "comprise" should be interpreted as inclusive or open-ended, rather than exclusive or closed, unless explicitly defined as the opposite. All technical, scientific or other terms are in accordance with the meaning understood by those skilled in the art, unless defined as the opposite. Common terms found in dictionaries should not be interpreted too idealistically or too unrealistically in the context of relevant technical documents, unless the present disclosure explicitly defines them as such.

[0100] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, but can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all variations falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0101] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A flow rate adjustable analgesia pump, characterized in that: including a body having a cavity; The main body is provided with a medicine containing structure and a pressurizing structure; The medicine containing structure is connected to a first infusion tube; Wherein, the drug-containing structure at least includes a soft capsule; A liquid level sensor is provided in the capsule to monitor the amount of liquid medicine in the capsule; when the liquid level sensor detects that the amount of liquid medicine is less than a preset threshold, the liquid level sensor sends a signal to the alarm to trigger an alarm; The alarm is arranged on the housing or independently arranged; The pressurizing structure is movably connected to the inner wall of the main body and can move between a first position and a second position; in the first position, the pressurizing structure does not contact the drug-containing structure; in the second position, the pressurizing structure can contact the capsule and apply pressure to the capsule; the drug-containing structure also includes a base located below the capsule, the base being connected to the aforementioned first infusion tube; the pressurizing structure includes a cover corresponding to the drug-containing structure and capable of covering the drug-containing structure; and further includes an adjustment structure for changing the position of the pressurizing structure relative to the drug-containing structure; the adjustment structure includes a load-bearing structure provided on the aforementioned cover; the load-bearing structure contains liquid; the load-bearing structures are two and are symmetrically arranged at the lower end of the outer side of the cover; The regulating structure further includes a liquid storage tank disposed within the main body and above the pressurizing structure. The liquid storage tank contains liquid and is connected to each load-bearing structure via a second liquid infusion tube and a third liquid infusion tube. Liquid circulates between the liquid storage tank and each load-bearing structure, thereby changing the weight of each load-bearing structure and driving the pressurizing structure to move up and down within the main body. Each of the load-bearing structures and the liquid storage tank is not elastic; each of the load-bearing structures is connected to a first extrusion portion located higher than each load-bearing structure, the first extrusion portion contains gas and extends to the outside of the main body; The liquid storage tank is connected to a second extrusion portion located higher than the liquid storage tank, wherein the second extrusion portion contains gas and extends to the outside of the main body; The connection end of the second infusion tube corresponding to the liquid storage tank is higher than the liquid level in the liquid storage tank, and the connection end of the third infusion tube corresponding to the liquid storage tank is lower than the liquid level in the liquid storage tank. Both the second infusion tube and the third infusion tube are provided with a one-way valve; A level bubble meter is arranged in the main body.

2. The flow rate adjustable analgesia pump according to claim 1, characterized in that: The housing is at least partially transparent.

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