Analgesia pump with adjustable flow speed

Abstract

The invention provides a flow velocity adjustable analgesia pump, and relates to the technical field of medical equipment. Comprising 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 at least comprises a soft bag body; 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 is not in contact with the medicine containing structure at the first position; and at the second position, the pressurizing structure can be in contact with the bag body and apply pressure to the bag body. According to the device, the medicine infusion flow rate can be flexibly adjusted, the analgesia requirements of patients after different operations are met, the wide clinical application prospect is achieved, and the postoperative comfort and life quality of the patients can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, and particularly relates to an analgesic pump with adjustable flow rate. Background Art

[0002] Analgesia pumps play an important role in the medical field, especially in the management of postoperative pain. They help patients maintain a relatively constant drug concentration during postoperative recovery by continuously and steadily infusing analgesics, thereby effectively relieving pain and improving patients' comfort and quality of life.

[0003] Traditional analgesia pumps are usually equipped with basic flow control devices that allow medical staff to set the drug infusion rate according to the patient's needs. However, there are limitations on the maximum flow rate and it cannot effectively meet the patient's needs during the peak pain period after surgery.

[0004] Postoperative pain often fluctuates, especially in the early period after surgery, when patients may experience severe pain. During this period, a fixed maximum flow rate may not provide adequate analgesia, causing discomfort to the patient. In order to relieve pain, patients usually need to rely on additional analgesics, which increases 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 achieved multi-flow-rate effects by jamming silicone tubes. Although this improved the flexibility of drug infusion to a certain extent, it also exposed some defects. First, silicone tubes that were jammed for a long time were prone to deformation, causing pipeline blockage, affecting drug fluidity, and failing to effectively relieve pain. Second, silicone tubes were relatively fragile and easily damaged during use, increasing the risk of drug leakage, affecting the analgesic effect and potentially causing safety hazards.

[0006] Early multi-flow rate infusion pumps came into being. This type of device uses a switch mechanism to jam the silicone tube in an attempt to achieve a multi-flow rate effect. Although this design has improved the flexibility of drug infusion to a certain extent, its defects have gradually become apparent. First, a silicone tube that has been stuck for a long time is prone to deformation, which in turn leads to blockage of the pipeline, which can seriously affect the fluidity of the drug and cannot effectively relieve the patient's pain. Secondly, the fragile nature of the silicone tube makes it easy to break during use, and the risk of drug leakage is significantly increased, which not only affects the patient's analgesic effect, but may also cause a series of safety hazards.

[0007] In summary, how to provide an analgesic pump with adjustable flow rate is a technical problem that urgently needs to be solved. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an analgesic pump with adjustable flow rate. By changing the position of the pressurizing structure relative to the drug container structure, different pressures are applied to the drug container structure, causing the drug container structure to deform and the internal pressure to change, thereby changing the outflow rate of the internal liquid.

[0009] The present invention provides an analgesic pump with adjustable flow rate, comprising a main body having a cavity; The main body is provided with a drug containing structure and a pressurizing structure; The drug containing structure is connected to a first infusion tube; Wherein, the drug containing structure at least comprises a soft capsule; 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.

[0010] Furthermore, the drug containing structure also includes a base located below the capsule, and the base is connected to the aforementioned first infusion tube.

[0011] Furthermore, the pressurizing structure includes a cover which is arranged corresponding to the drug containing structure and can be covered on the drug containing structure.

[0012] Furthermore, it also includes an adjustment structure for changing the position of the pressurizing structure relative to the drug containing structure.

[0013] Furthermore, the adjustment structure includes a load-bearing structure disposed on the aforementioned cover; the load-bearing structure contains liquid; The regulating structure also includes a liquid storage tank arranged in the main body and located above the pressurizing structure. The liquid storage tank contains liquid and is connected to the aforementioned load-bearing structure through a first infusion tube. The liquid circulates between the liquid storage tank 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 provided on the first infusion tube to control the passage of liquid.

[0014] Furthermore, the load-bearing structure and the liquid storage tank are both elastic, and the liquid storage tank is partially exposed at the top of the main body.

[0015] Furthermore, the load-bearing structure and the liquid storage tank are not elastic; the load-bearing structure is connected to a first extrusion portion located higher than the load-bearing structure, the first extrusion portion contains gas inside and extends to the outside of the main body; The liquid storage tank is connected to a second extrusion portion which is located higher than the liquid storage tank. The second extrusion portion contains gas and extends to the outside of the main body.

[0016] Furthermore, the load-bearing structure is connected to the liquid storage tank through a second infusion tube and a third infusion tube; wherein, 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, and both the second infusion tube and the third infusion tube are provided with a one-way valve.

[0017] Furthermore, a level bubble meter is arranged in the main body.

[0018] Furthermore, the housing is at least partially transparent.

[0019] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art, as an example: The design of the soft capsule can achieve more stable and long-lasting drug infusion.

[0020] Through the coordinated design of the pressurization structure and the adjustment structure, patients or medical staff can flexibly adjust the drug infusion flow rate according to different pain conditions. Patients can increase drug infusion immediately during the peak of pain, which helps to reduce the need for additional analgesics, thereby reducing the risk of drug overdose or dependence, reducing the occurrence of side effects, providing personalized pain management, and meeting patients' analgesia needs in different scenarios and time periods, thereby effectively reducing postoperative pain.

[0021] The analgesic pump is designed to be adaptable and can meet the needs of patients after different surgeries. It is suitable for various types of surgeries and postoperative recovery processes. It not only improves the analgesic effect, but also optimizes safety, reliability and convenience. It has broad clinical application prospects and helps improve patients' postoperative comfort and quality of life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the analgesic pump provided by the present invention.

[0023] Figure 2 The structural schematic diagram of the analgesic pump provided by the present invention is another embodiment.

[0024] Figure 3 The structural schematic diagram of the analgesic pump provided by the present invention is another embodiment.

[0025] Description of Reference Numerals Analgesia pump with adjustable flow rate 100; Main body 200; Drug containing structure 300, capsule 310, base 320; A pressurized structure 400, a cover 410, and a movable connecting member 420; Liquid storage tank 500, load-bearing structure 510, first extrusion part 520, second extrusion part 530; Level bubble meter 600; A first infusion tube 10 , a second infusion tube 11 , a third infusion tube 12 , and a one-way valve 13 . DETAILED DESCRIPTION

[0026] The technical solution disclosed in the present invention is described in detail below in conjunction with specific embodiments.

[0027] Techniques and methods known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques and methods should be considered 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 may have different values.

[0028] The present invention provides an analgesic pump 100 with adjustable flow rate, such as Figure 1-3 As shown, it includes a main body 200 having a cavity.

[0029] Optionally, the main body 200 is at least partially transparent to facilitate observation of the internal situation.

[0030] The main body 200 is provided with a drug containing structure 300 for containing drug solution. like Figure 1 As shown, the drug containing structure 300 at least includes a soft capsule 310 , and the capsule 310 contains drug solution.

[0031] The material of the capsule 310 may be, by way of example and not limitation, medical polyurethane, medical silicone, medical TPE, medical PP, medical PE, etc.

[0032] A liquid level sensor is provided in the capsule to monitor the remaining amount of the liquid medicine in the capsule. The liquid level sensor is provided at a relatively lower position in the capsule. When the liquid level reaches that position, the liquid level sensor sends a signal to the alarm provided on the shell, or to a separately provided external alarm, prompting the replenishment of liquid medicine.

[0033] Furthermore, the capsule can be set to be transparent or translucent to facilitate direct observation of the internal drug liquid status.

[0034] The liquid medicine in the airbag can be replenished by setting an injection port (not shown in the figure) on the shell, the injection port is connected to the airbag through the first infusion tube 10, and the user directly injects the liquid medicine into the airbag 310 through a syringe. The injection port can be equipped with a sealing device to ensure that the liquid medicine is prevented from leaking and contaminating when not in use.

[0035] The airbag 310 can also be connected to an external infusion device, and when the user needs to replenish the liquid medicine, the liquid medicine is delivered to the airbag through the first infusion tube 10. This method is suitable for long-term liquid medicine infusion, and is convenient for continuous monitoring and management of the inflow of liquid medicine.

[0036] In another embodiment, if Figure 2 and 3 As shown, the drug storage structure further includes a hollow base 320 located below the airbag.

[0037] Compared to the bladder body 310 , the base 320 is a hard structure and can raise the position of the airbag relative to the bottom of the shell.

[0038] The drug containing structure 300 is connected to the first infusion tube 10 , that is, the capsule 310 or the base 320 is connected to the first infusion tube 10 through the hole inside the main body 200 .

[0039] A pressurizing structure 400 is disposed in the main body 200 .

[0040] The pressurizing structure 400 is movably connected to the inner wall of the main body 200 and can move between a first position and a second position.

[0041] The movable connection methods include but are not limited to sliding connection, hinged connection, spring connection, gear connection, magnetic connection, flexible connection, etc.

[0042] Take sliding connection as an example. Figure 2 As shown, movable connecting members 420 , namely pulleys or sliders, are arranged on both sides of the pressurizing structure 400 , and corresponding slide rails are arranged inside the main body 200 .

[0043] Taking the hinge connection as an example, a hinge connection point is provided on at least one side of the pressurizing structure 400, so that the pressurizing structure 400 can rotate freely within a certain angle with the hinge connection point as the center, thereby moving between the first position and the second position.

[0044] 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 expansion and contraction of the spring drives the position of the pressurizing structure 400 in the main body 200, especially the position change in the longitudinal direction.

[0045] 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.

[0046] Taking the flexible connection as an example, a flexible connection piece 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 connection piece.

[0047] In this embodiment, Figure 1-3 As shown, the pressurizing structure 400 includes a cover 410 which is arranged corresponding to the drug containing structure 300 and can be covered on the drug containing structure 300 .

[0048] By way of example and not limitation, Figure 1 The shape of the pressurizing structure 400 can be set to match the outer contour shape of the drug containing structure 300 , presenting a wrapping tendency for the drug containing structure 300 .

[0049] 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 upper part of the capsule 310 with the outline of the capsule 310, and the lower part of the base 320 with the outer contour of the base 320, such as Figure 2 and 3 .

[0050] Other shapes are naturally possible, for example, the pressurizing structure 400 is rectangular, and the length and width are set to be sufficient to wrap and cover the entire drug container structure 300.

[0051] Of course, the drug container structure 300 does not need to be wrapped as a whole, and 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 or spherical shape with the arc surface facing upward.

[0052] In the first position, the pressurizing structure 400 does not contact the drug containing structure 300 , and there is a certain distance between the pressurizing structure 400 and the drug containing structure 300 .

[0053] 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.

[0054] Generally speaking, the first position is higher than the second position.

[0055] 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 .

[0056] The range of the second position includes the position where the pressurizing structure 400 just contacts the highest point of the bladder 310 , to the lowest point of the movable range of the pressurizing structure 400 in the main body 200 .

[0057] The lower the pressurizing structure 400 is located in the main body 200 , that is, the smaller the distance from the bottom of the main body 200 , the greater the pressure applied to the capsule 310 , the more severe the deformation of the capsule 310 , the greater the internal pressure, and the faster the liquid inside will flow out.

[0058] It also includes an adjustment structure for changing the position of the pressurizing structure 400 relative to the drug containing structure 300 .

[0059] The adjustment structure includes a load-bearing structure 510 disposed on the aforementioned cover 410 , and the load-bearing structure 510 contains liquid.

[0060] The adjustment structure includes at least one load-bearing structure 510. In the case of setting one, such as Figure 1 As shown, the load-bearing structure 510 is disposed on a single side of the pressurizing structure 400 .

[0061] Or, if Figure 2 and 3 As shown, there are two load-bearing structures 510, which are symmetrically arranged at the lower end of the outer side of the cover 410. In addition, they can also be arranged in the middle of the outer side, or at the upper end, and there is no limitation on symmetry.

[0062] Of course, the load-bearing structure 510 can also be disposed inside the cover 410 .

[0063] Since the aforementioned pressurizing structure 400 is movably connected to the main body 200, the load-bearing structure 510 can be arranged on the inside or outside of the cover 410, and there is no need to establish a connection with the inner wall of the main body 200.

[0064] Of course, it is also possible to allow the outer load-bearing structure 510 and the inner wall of the main body 200 to be movably connected.

[0065] The regulating structure also includes a liquid storage tank 500 disposed in the main body 200 and located above the pressurizing structure 400 . The liquid storage tank 500 contains liquid and is connected to the aforementioned load-bearing structure 510 via a first infusion tube 10 .

[0066] A one-way valve 13 is provided on the first infusion tube 10, and liquid is allowed to pass through only when the one-way valve 13 is opened.

[0067] The opening and closing of the one-way valve 13 can be controlled by setting a switch outside the main body 200, or by an external remote controller.

[0068] Assume that when the pressurized structure 400 is in the first position, the total weight of the load-bearing structure 510 is X. When the liquid flows between the liquid storage tank 500 and the load-bearing structure 510, when the liquid in the liquid storage tank 500 flows into the weighing structure, the total weight of the load-bearing structure 510 will increase, which is X+ΔX, where ΔX is the weight of the liquid flowing in). This increased weight exerts a downward force on the pressurized structure 400, thereby causing the pressurized structure 400 to move downward until it reaches the second position where it contacts the capsule 310. At this time, the total weight is assumed to be Y.

[0069] On the contrary, after the pressurized structure 400 reaches the second position, if the liquid in the load-bearing structure 510 enters the liquid storage tank 500, the total weight of the load-bearing structure 510 will be reduced, which is Y-ΔY, where ΔY is the weight of the outflowing liquid). As the load-bearing structure 510 is lightened, the downward force on the pressurized structure 400 is reduced, and the pressurized structure 400 will begin to move upward until it reaches a new equilibrium position or returns to the original first position.

[0070] There are two main ways to drive liquid circulation: First, as Figure 1 and 2 As shown, the load-bearing structure 510 and the liquid storage tank 500 are both elastic and can be deformed when subjected to external force, and the liquid storage tank 500 and the load-bearing structure 510 are partially exposed at the top of the main body 200 to serve as a bearing surface for applying pressure.

[0071] 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, and the load-bearing structure 510 will deform due to its elastic properties. The squeezing causes the liquid inside the load-bearing structure 510 to enter the first infusion tube 10 and flow to the connected liquid storage tank 500.

[0072] Conversely, when the user needs to increase the total weight of the load-bearing structure 510, he only needs to open the one-way valve 13 and then squeeze the liquid storage tank 500 inward. The liquid storage tank 500 will deform due to its elastic properties, and the squeezing will cause the liquid inside the liquid storage tank 500 to enter the first infusion tube 10 and flow to the connected load-bearing structure 510.

[0073] In a specific implementation, the first infusion tubes 10 may also be separately arranged according to different liquid flow directions.

[0074] In another embodiment, the load-bearing structure 510 and the liquid storage tank 500 are not elastic.

[0075] like Figure 3 As shown, the load-bearing structure 510 is connected to a first extrusion portion 520 located higher than the load-bearing structure, wherein the first extrusion portion 520 contains gas and extends to the outside of the main body 200 .

[0076] The liquid storage tank 500 is connected to a second extrusion portion 530 located higher than the liquid storage tank. The second extrusion portion contains gas and extends to the outside of the main body.

[0077] The load-bearing structure is connected to the liquid storage tank through the second infusion tube 11 and the third infusion tube 12; wherein, the connection end of the second infusion tube 11 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 12 corresponding to the liquid storage tank 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 one-way valve 13.

[0078] When gas is provided inside the first extrusion portion 520, the gas pressure inside the first extrusion portion 520 increases during extrusion, and the gas pressure is transmitted to the inside of the load-bearing structure 510 connected to the first extrusion portion 520. Furthermore, since the first extrusion portion 520 is positioned higher than the load-bearing structure, liquid will not accidentally enter the first extrusion portion.

[0079] The pressure transmitted to the inside of the load-bearing structure by the first extrusion part 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 corresponding to the liquid storage tank 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 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.

[0080] In contrast, when the second extrusion portion 530 is extruded, the pressure of the gas is transmitted to the interior of the liquid storage tank 500 connected to the second extrusion portion 520, and since the second extrusion portion 530 is located higher than the liquid storage tank 500, the liquid in the liquid storage tank will not accidentally enter the second extrusion portion.

[0081] The pressure transmitted to the inside of the liquid storage tank by the second extrusion part 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 corresponding to the liquid storage tank is lower than the liquid level in the liquid storage tank, and the one-way check valve 13 on the third infusion tube 12 is set to only allow liquid to flow from the liquid storage tank to the direction of the load-bearing structure, the liquid in the load-bearing structure will not flow back into the liquid storage tank.

[0082] Alternatively, if Figure 2 As shown, a level bubble meter 600 is provided 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.

[0083] In the scope of the intended protection of the present disclosure, terms such as "including" and the like should be interpreted as inclusive or open by default, rather than exclusive or closed, unless they are expressly defined to the contrary. All technical, scientific or other terms have the meanings understood by those skilled in the art unless they are defined to the contrary. Common terms found in dictionaries should not be interpreted too idealistically or too impractically in the context of relevant technical documents, unless the present disclosure expressly defines them as such.

[0084] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0085] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flow rate adjustable analgesic pump, characterized in that: including a body having a cavity; The main body is provided with a drug containing structure and a pressurizing structure; The drug containing structure is connected to a first infusion tube; Wherein, the drug containing structure at least comprises a soft capsule; 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.

2. The flow rate adjustable analgesic pump according to claim 1, characterized in that: The medicine containing structure also includes a base located below the capsule, and the base is connected to the aforementioned infusion tube.

3. The flow rate adjustable analgesic pump according to claim 1, characterized in that: The pressurizing structure includes a cover which is arranged corresponding to the drug containing structure and can be covered on the drug containing structure.

4. The flow rate adjustable analgesic pump according to claim 3, characterized in that: It also includes an adjustment structure for changing the position of the pressurizing structure relative to the drug containing structure.

5. The flow rate adjustable analgesic pump according to claim 4, characterized in that: The adjustment structure includes a load-bearing structure disposed on the aforementioned cover; the load-bearing structure contains liquid; The regulating structure also includes a liquid storage tank disposed in the main body and located above the pressurizing structure. The liquid storage tank contains liquid and is connected to the aforementioned load-bearing structure through a liquid infusion tube. The liquid flows between the liquid storage tank 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; The first infusion tube is provided with a one-way valve for controlling the passage of liquid.

6. The flow rate adjustable analgesic pump according to claim 5, characterized in that: The load-bearing structure and the liquid storage tank are both elastic, and the liquid storage tank is partially exposed at the top of the main body.

7. The flow rate adjustable analgesic pump according to claim 5, characterized in that: The load-bearing structure and the liquid storage tank are not elastic; The load-bearing structure is connected to a first extrusion portion located higher than the load-bearing structure, the first extrusion portion contains gas inside and extends to the outside of the main body; The liquid storage tank is connected to a second extrusion portion which is located higher than the liquid storage tank. The second extrusion portion contains gas and extends to the outside of the main body.

8. The flow rate adjustable analgesic pump according to claim 7, characterized in that: The load-bearing structure is connected to the liquid storage tank through a second infusion tube and a third infusion tube; wherein, 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, and both the second infusion tube and the third infusion tube are provided with a one-way valve.

9. The flow rate adjustable analgesic pump according to claim 1, characterized in that: A level bubble meter is arranged in the main body.

10. The analgesic pump with adjustable flow rate according to any one of claims 1 to 9, characterized in that: The housing is at least partially transparent.

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