Non-return device for infusion pump pipeline
By designing a check valve for infusion pumps, and utilizing the combination of a drug clamp and a check valve spring, the problems of pipeline damage and operational complexity caused by existing check valves are solved, thus achieving the effects of simplified operation and improved infusion efficiency.
Patent Information
- Application Number
- CN202423056755.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing infusion pump check valves are prone to damaging pipelines, increasing operating steps, and posing safety hazards. Especially during long-term infusion, the disc clamp or Robert clamp can cause pipeline damage and operational errors.
A backflow prevention device is designed, comprising a fixing component, a backflow preventer, a backflow preventer spring, and a drug loading clamp. The drug loading clamp presses down on the backflow preventer when the drug solution is present to ensure pipeline continuity. When the drug solution is changed, the backflow preventer spring pushes the backflow preventer to cut off the pipeline. Combined with a limiting component and mounting holes, it is easy to install and integrate into the infusion pump.
It achieves a reasonable structure and simple operation, reduces the difficulty of pre-filling drugs, improves infusion efficiency, and avoids pipeline damage and safety hazards.
Smart Images
Figure CN223930495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment, specifically to a check valve for infusion pump tubing. Background Technology
[0002] An infusion pump is an intelligent infusion device that uses mechanical force to accurately control the number of drops or the flow rate of the infusion, ensuring precise and safe administration of the drug to the patient. The clinical application of infusion pumps has significantly improved the accuracy, safety, and quality of care associated with infusions.
[0003] Infusion pumps are classified into infusion pumps and micro-infusion pumps according to their infusion volume. During the infusion of liquid drugs, backflow prevention requires the installation of a check valve on the infusion line. In existing technologies, a clip or Robert clamp is usually installed on the outside of the infusion line, and the line is manually cut off to prevent backflow.
[0004] However, this method has the following drawbacks:
[0005] 1. Easily damages tubing. For tubing used for single infusion, the damage is not obvious, but for tubing that requires long-term infusion, the clips or Robert clips use small, sharp parts to clamp the tubing, which can cause damage and leakage to infusion tubing that has been used for a long time.
[0006] 2. Adding operational steps: Generally speaking, the following steps are required for changing the medication: disconnect the infusion line using a tablet clamp or Robert clamp, then change the medication, and finally open the tablet clamp or Robert clamp to reconnect the infusion line.
[0007] 3. Redundant accessories: For infusion equipment, check valves such as disc clamps or Robert clamps are attached to the infusion pipeline. In daily use, the presence of such accessories on the infusion pipeline can easily lead to operational errors and create safety hazards. Utility Model Content
[0008] To address the aforementioned problems, the purpose of this utility model is to provide a check valve for infusion pump pipelines that has a reasonable structure, is easy to operate, reduces the difficulty of pre-filling medicine into medicine bags, and improves efficiency.
[0009] According to one aspect of this utility model, a check valve for an infusion pump pipeline is provided, comprising: a fixing component, a check valve element, a check spring, and a drug-filled clamp. The fixing component has several mounting slots, in which the infusion pipeline is placed. A limiting component is provided on the fixing component, the bottom of the infusion pipeline falls into the mounting slot, and the top of the infusion pipeline abuts the bottom of the limiting component. One end of the check valve element is hinged to the fixing component, and the bottom of the other end of the check valve element is connected to the check spring. The drug-filled clamp presses down on the top of the other end of the check valve element, causing the check spring to contract. The check valve element then abuts the bottom of the infusion pipeline. The drug-filled clamp presses down, driving the check valve element away from the infusion pipeline. By using the drug-filled clamp to press the check valve element while medication is present, the infusion pipeline remains connected. When medication needs to be replaced, the drug-filled clamp disengages from the check valve element, and the check spring pushes the check valve element to press down on the infusion pipeline, thereby cutting off the infusion pipeline and preventing liquid backflow.
[0010] In some implementations, the limiting member and the fixing component form a rectangular accommodating space, the height of which is greater than the outer diameter of the infusion line, through which the infusion line passes. The cooperation of the limiting member and the check valve enables the infusion line to be cut off during medication changes.
[0011] In some embodiments, a first mounting hole is horizontally provided on one side of the limiting member, and a second mounting hole is vertically provided on the other side of the limiting member. The first and second mounting holes facilitate the installation of the check valve.
[0012] In some embodiments, the check valve includes: a body, a first rotating shaft, a first contact strip, a contact end, and a fixing post. The first contact strip is recessed downwards in the middle of the body. The first rotating shaft is located at one end of the body, and the contact end is located at the other end. A fixing post is vertically positioned at the bottom of the contact end, and the axial direction of the first rotating shaft is perpendicular to the axial direction of the fixing post. By using the first rotating shaft as a fulcrum, the first contact strip is moved closer to or away from the infusion pipeline under the drive of a check spring or a drug-loading clamp.
[0013] In some embodiments, the first rotating shaft is disposed within the first mounting hole and can rotate within the first mounting hole. The top of the anti-reverse spring is sleeved on the outer wall of the fixed post, and the bottom of the anti-reverse spring is disposed within the second mounting hole. The infusion pipeline is placed on the first contact strip. The infusion pipeline is cut off by shortening the distance between the first contact strip and the limiting member.
[0014] In some implementations, the check valve and the limiting valve are arranged side by side. Only by arranging the check valve and the limiting valve side by side can the injection pipeline be cut off.
[0015] In some embodiments, the loading clamp includes: a hinged latch, a clamp body, and a pressing end. One end of the clamp body is provided with the hinged latch, and the other end of the clamp body is provided with the pressing end. The hinged latch is hinged to a fixing component, and the pressing end abuts against the contact end. The hinged latch facilitates pressing or lifting of the contact end.
[0016] In some embodiments, a snap-fit element is provided on the fixing component, which is detachably connected to the infusion pump via the snap-fit element. The snap-fit element facilitates the integration of a check valve into the infusion pump.
[0017] This invention offers several advantages: a reasonable structure, convenient operation, reduced difficulty in pre-filling medication into the medicine bag, and improved efficiency. The invention utilizes a medication clamp to press down on a check valve while the medication is present, keeping the check valve away from the infusion line to ensure its continuity. When medication needs to be replaced, the medication clamp disengages from the check valve, and a check spring pushes the check valve to press down on the infusion line, thus cutting off the infusion line and preventing liquid backflow. The cooperation between the limiting component and the check valve allows for the cutting off of the infusion line during medication replacement. The first and second mounting holes facilitate the installation of the check valve. Using a first rotating shaft as a fulcrum, the first contact strip moves closer to or away from the infusion line under the drive of the check spring or medication clamp. Shortening the distance between the first contact strip and the limiting component cuts off the infusion line. A hinged snap-fit facilitates pressing or lifting the contact end. A snap-fit component allows for easy integration of the check valve into the infusion pump. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a check valve device for an infusion pump pipeline according to the present invention;
[0019] Figure 2 This is an exploded view of an infusion pump pipeline according to the present invention;
[0020] Figure 3 This is a schematic diagram of the structure of a fixing component for an infusion pump pipeline according to the present invention;
[0021] Figure 4 This is a schematic diagram of the structure of a check valve for use in an infusion pump pipeline according to the present invention;
[0022] Figure 5 This is a schematic diagram of the structure of a drug loading clamp for an infusion pump pipeline according to the present invention;
[0023] Figure 6 This is a schematic diagram of the connection state of an infusion pump pipeline according to the present invention;
[0024] Figure 7 This is a schematic diagram of the check valve state for an infusion pump pipeline according to the present invention. Detailed Implementation
[0025] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.
[0026] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.
[0027] like Figure 1 and Figure 2 As shown, a check valve for an infusion pump pipeline includes: a fixing component 1, a check valve 2, a check spring 3, and a drug-filling clamp 4. The fixing component 1 has several mounting grooves 11, in which the infusion pipeline is placed. A limiting component 12 is provided on the fixing component 1. The bottom of the infusion pipeline falls into the mounting groove 11, and the top of the infusion pipeline is attached to the bottom of the limiting component 12. One end of the check valve 2 is hinged to the fixing component 1, and the bottom of the other end of the check valve 2 is connected to the check spring 3. The drug-filling clamp 4 presses down on the top of the other end of the check valve 2, causing the check spring 3 to contract. The check valve 2 is attached to the bottom of the infusion pipeline. The drug-filling clamp 4 presses down to drive the check valve 2 away from the infusion pipeline. When the medicine is present, the medicine clamp 4 presses down on the check valve 2 to keep the check valve 2 away from the infusion line and ensure the continuity of the infusion line. When the medicine needs to be replaced, the medicine clamp 4 disengages from the check valve 2, and the check spring 3 pushes the check valve 2 to press down on the infusion line, thereby cutting off the infusion line and preventing liquid backflow.
[0028] like Figure 3 As shown, the limiting member 12 and the fixing component 1 form a rectangular accommodating space. The height of the accommodating space is greater than the outer diameter of the infusion pipeline, and the infusion pipeline passes through the accommodating space. The infusion pipeline can be cut off during the medication change by the cooperation of the limiting member 12 and the check valve 2.
[0029] A first mounting hole 13 is horizontally provided on one side of the limiting member 12, and a second mounting hole 14 is vertically provided on the other side of the limiting member 12. The first mounting hole 13 and the second mounting hole 14 facilitate the installation of the anti-reverse member 2.
[0030] A snap-fit component 15 is provided on the fixing component 1, and the fixing component 1 is detachably connected to the infusion pump via the snap-fit component 15. The snap-fit component 15 facilitates the integration of the check valve into the infusion pump.
[0031] In the specific implementation, two snap-fit components 15 are provided. A fixing hole for the infusion pipeline is provided in the middle of the snap-fit component 15, through which the infusion pipeline passes. An installation groove 11 is provided on the reinforcing rib. A limiting component 12 is located between the two installation grooves 11, and the limiting component 12 is positioned relatively away from the center of the fixing component 1 and away from the snap-fit component 15. This arrangement minimizes deformation of the infusion pipeline when disassembling the fixing component 1. If the pipeline is close to the snap-fit component 15 and rotated and pried open with the fixing component 1 and snap-fit component 15 as the center, the bending amplitude of the infusion pipeline is large, which can easily cause damage to the infusion pipeline. Essentially, the limiting component 12 is a rectangular frame with two supports at the bottom, integrally formed with the fixing component 1 at the bottom. After the infusion pipeline passes through the limiting component 12, it is led out through the installation groove 11.
[0032] like Figure 4 As shown, the check valve 2 includes: a body 21, a first rotating shaft 22, a first contact strip 23, a contact end 24, and a fixing post 25. The first contact strip 23 is recessed downwards in the middle of the body 21. The first rotating shaft 22 is located at one end of the body 21, and the contact end 24 is located at the other end. The fixing post 25 is vertically positioned at the bottom of the contact end 24. The axial direction of the first rotating shaft 22 is perpendicular to the axial direction of the fixing post 25. By using the first rotating shaft 22 as a fulcrum, the first contact strip 23 is moved closer to or away from the infusion pipeline under the drive of the check spring 3 or the drug-loading clamp 4.
[0033] The first rotating shaft 22 is disposed within the first mounting hole 13 and can rotate within the first mounting hole 13. The top of the anti-reverse spring 3 is sleeved on the outer wall of the fixed post 25, and the bottom of the anti-reverse spring 3 is disposed within the second mounting hole 14. The infusion pipeline is placed on the first contact strip 23. The infusion pipeline is cut off by shortening the distance between the first contact strip 23 and the limiting member 12. It should be noted that the anti-reverse member 2 and the anti-reverse spring 3 need to be pre-installed before introducing the infusion pipeline so that the infusion pipeline can be positioned on the first contact strip 23.
[0034] The check valve 2 and the limiting valve 12 are arranged side by side. Only by arranging the check valve 2 and the limiting valve 12 side by side can the infusion pipeline be cut off. Ideally, the check valve 2 and the limiting valve 12 should be arranged side by side and fit snugly together. If the check valve 2 and the limiting valve 12 are arranged side by side but too far apart, raising the check valve 2 will only cause the infusion pipeline to bend and deform, but will not completely cut off the pipeline and achieve the check valve effect.
[0035] like Figure 5 As shown, the loading clip 4 includes: a hinged buckle 41, a clamp body 42, and a pressing end 43. The hinged buckle 41 is provided at one end of the clamp body 42, and the pressing end 43 is provided at the other end of the clamp body 42. The hinged buckle 41 is hinged to the fixing component 1, and the pressing end 43 is in contact with the contact end 24. The hinged buckle 41 facilitates pressing or lifting the contact end 24 by the pressing end 43.
[0036] Before use, first put the top of the anti-reverse spring 3 onto the fixing post 25, then insert the first rotating shaft 22 into the first mounting hole 13, press down the contact end 24 to make the anti-reverse spring 3 in the second mounting hole 14 in a contracted state, and pass the infusion line out from the limiting member 12 and be located below the limiting member 12 and above the first contact strip 23; hinge the hinge buckle 41 of the drug loading clip 4 to the fixing component 1, press down the end 43 to fit the contact end 24, and finally snap the fixing component 1 into the infusion pump.
[0037] like Figure 6 As shown, under normal working conditions or when it is necessary to prefill medicine into the medicine bag or medicine box, due to the certain pressure inside the medicine bag or medicine box, we use the medicine clamp 4 to install on the fixing component 1. The first contact strip 23 in the check valve 2 moves downward and acts on the check valve spring, opening the check valve. The user can smoothly fill the medicine bag or medicine box through the infusion pipeline.
[0038] like Figure 7 As shown, after we finish filling the medicine bag or box with medicine, we remove the medicine clamp 4. The anti-reverse spring 3 releases upward force, which acts on the anti-reverse element 2. The first contact strip 23 of the anti-reverse element 2 presses the infusion pipeline, so that the infusion pipeline is closed and the medicine in the medicine bag or box cannot flow out, effectively preventing the backflow and waste of the medicine.
[0039] By using this invention, the dosing process is simplified, eliminating the need for the three-step operation of turning off the power, adding the medicine, and then turning it back on, thus improving the efficiency of dosing.
[0040] The above descriptions are merely some embodiments of this utility model. It should be noted that those skilled in the art can make other modifications and improvements without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A check valve for use in infusion pump piping, characterized in that, The device includes: a fixing component, a check valve, a check spring, and a loading clamp. The fixing component has several mounting slots in which an infusion line is placed. A limiting component is provided on the fixing component. The bottom of the infusion line falls into the mounting slot, and the top of the infusion line is attached to the bottom of the limiting component. One end of the check valve is hinged to the fixing component, and the bottom of the other end of the check valve is connected to a check spring. The loading clamp presses down on the top of the other end of the check valve, causing the check spring to contract. The check valve is attached to the bottom of the infusion line. The loading clamp presses down, driving the check valve away from the infusion line.
2. A check valve for an infusion pump pipeline according to claim 1, characterized in that, The limiting member and the fixing component form a rectangular accommodating space, the height of which is greater than the outer diameter of the infusion pipeline, and the infusion pipeline passes through the accommodating space.
3. A check valve for an infusion pump pipeline according to claim 2, characterized in that, The limiting member has a first mounting hole horizontally on one side and a second mounting hole vertically on the other side.
4. A check valve for an infusion pump pipeline according to claim 3, characterized in that, The anti-reverse component includes: a body, a first rotating shaft, a first contact strip, a contact end, and a fixing post. The first contact strip is recessed downward in the middle of the body. The first rotating shaft is provided at one end of the body. The contact end is provided at the other end of the body. The fixing post is vertically provided at the bottom of the contact end. The axial direction of the first rotating shaft is perpendicular to the axial direction of the fixing post.
5. A check valve for an infusion pump pipeline according to claim 4, characterized in that, The first rotating shaft is disposed in the first mounting hole and can rotate within the first mounting hole. The top of the anti-reverse spring is sleeved on the outer wall of the fixed column, and the bottom of the anti-reverse spring is disposed in the second mounting hole. The infusion pipeline is placed on the first contact strip.
6. A check valve for an infusion pump pipeline according to claim 5, characterized in that, The anti-reverse component and the limiting component are arranged side by side.
7. A check valve for an infusion pump pipeline according to claim 6, characterized in that, The loading clamp includes: a hinged buckle, a clamp body, and a pressing end. One end of the clamp body is provided with a hinged buckle, and the other end of the clamp body is provided with a pressing end. The hinged buckle is hinged to a fixing component, and the pressing end is in contact with the contact end.
8. A check valve for an infusion pump pipeline according to any one of claims 1-7, characterized in that, The fixing component is provided with a snap-fit connector, and the fixing component is detachably connected to the infusion pump through the snap-fit connector.