Environment-friendly degradable disposable precision filtering infusion apparatus
By using infusion sets with biodegradable biomaterials and a two-stage filtration structure, the problems of environmental pollution and insufficient filtration accuracy have been solved, achieving both green environmental protection and improved filtration effect, and simplifying medical procedures.
Patent Information
- Application Number
- CN202511787450.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-01-09
AI Technical Summary
Existing disposable infusion set materials are difficult to degrade, leading to environmental pollution; their filtration accuracy is insufficient, which may cause infusion reactions; and their filtration structure is prone to clogging, increasing the workload of medical staff.
The infusion set is made of biodegradable biomaterials and features a primary filtration layer and a precision filtration layer. The filtration layer is supported by a robust structure and has a well-designed flow regulator for easy operation.
It achieves environmentally friendly degradation, improves filtration accuracy, reduces the risk of infusion reactions, ensures a smooth infusion process, and reduces the adjustment work for medical staff.
Smart Images
Figure CN121288080A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to a green and environmentally friendly degradable disposable precision filtration infusion device. BACKGROUND
[0002] At present, in the medical field, disposable infusion devices are widely used in the infusion treatment process of patients. However, most of the existing disposable infusion devices are made of non-degradable plastic materials, such as polyvinyl chloride (PVC) and the like. These materials are difficult to naturally degrade after use, causing serious pollution to the environment. A large amount of infusion device waste accumulates, not only occupying land resources, but also possibly releasing harmful substances, endangering the ecological environment and human health.
[0003] At the same time, the existing infusion device filtering device has deficiencies in filtering precision and cannot effectively filter small particles, bacteria, heat sources and other impurities in the liquid medicine. These impurities may cause infusion reactions such as fever and allergy when entering the human body, affecting the treatment effect and health of the patient. In addition, the filtering structure of some infusion devices is prone to blockage during use, resulting in unstable infusion speed, which requires frequent adjustment by medical personnel, increasing the workload of medical personnel. SUMMARY
[0004] The purpose of the present application is to provide a green and environmentally friendly degradable disposable precision filtration infusion device to solve the technical problems raised in the background.
[0005] To achieve the above purpose, the present application provides the following technical scheme: a green and environmentally friendly degradable disposable precision filtration infusion device, comprising a first infusion catheter, a filtering device and a connecting block, the liquid inlet end of the first infusion catheter is provided with a puncture device, the inner end of the first infusion catheter is provided with a drip chamber, and the drip chamber adopts a funnel shape with a wide upper part and a narrow lower part, the inner part of the drip chamber is staggered with a flow dividing baffle, the liquid outlet end of the first infusion catheter is provided with a filtering device, and the other side of the liquid outlet end of the filtering device is provided with a second infusion catheter, the two ends of the filtering device are provided with connecting blocks, the inner end of the second infusion catheter is provided with a flow regulator, and the liquid outlet end of the second infusion catheter is connected with a venous needle set;
[0006] The filtering device comprises a shell, a support structure, a precision filtration layer, a primary filtration layer, a plug-in connector, an extension straight pipe and a luer connector, the inside of the shell is provided with a support structure, the inner side of the support structure is provided with a primary filtration layer at the top, and the inner side of the support structure is provided with a precision filtration layer at the bottom, plug-in connectors are installed on the two side ports of the shell, extension straight pipes extend from the outer side of the plug-in connectors, and luer connectors are provided on the outer side of the extension straight pipes;
[0007] The interface end of the connecting block is provided with a connecting plate, and an inner embedding groove is formed in the middle of the inner side of the connecting plate, and an extension flap extends from the outer side of the connecting plate, and a notch groove is formed in the inner side of the horizontal end of the extension flap, and the two sides of the notch of the notch groove are provided with a top plate;
[0008] The connecting plate is matched with the luer joint in size through the inner embedding groove, and the notch groove and the inner embedding groove are matched with each other in position.
[0009] The primary filter layer adopts a degradable non-woven fabric material with a large pore size, the precision filter layer adopts a nanofiber membrane material, and the support structure adopts a degradable porous support.
[0010] Further, the two sides of the flow regulator are symmetrically provided with side plates.
[0011] Further, the extension straight pipe and the notch groove are embedded in each other in size, and the top plate is vertically matched with the vertical end of the extension flap in size.
[0012] Further, the top plate can extrude the luer joint bottom wall embedded in the inner embedding groove when the top plate is vertical.
[0013] Further, the flow regulator adopts an extrusion type structure, is arranged on the second infusion catheter, and is located below the drip chamber.
[0014] Further, by adjusting the extrusion degree of the flow regulator on the infusion catheter, the pipe diameter of the infusion catheter can be controlled, so that the infusion speed can be accurately adjusted.
[0015] Further, the intravenous needle group is made of medical stainless steel, and the needle tip part is specially treated.
[0016] Compared with the prior art, the beneficial effects of the present application are:
[0017] Green and environmentally friendly: the components of the infusion device of the present application are all made of degradable biological materials, which can be gradually degraded in the natural environment through the action of microorganisms after use, reducing pollution to the environment and meeting the concept of sustainable development.
[0018] Precise filtration: the primary filter layer and the precision filter layer are arranged in the filter device, and through two-stage filtration, various impurities in the medicinal liquid can be effectively removed, the filtration precision is high, the risk of adverse reactions of patients caused by impurities in the infusion can be significantly reduced, and the safety of the infusion of patients is ensured.
[0019] Stable structure: the support structure in the filter device can stably support the filter layer, avoid deformation, blockage and other problems of the filter layer under the pressure of the medicinal liquid, ensure the smoothness of the infusion process, and reduce the adjustment work of medical staff.
[0020] Convenient to use: the components such as the puncture device, the drip chamber, the flow regulator and the intravenous needle are rationally designed, convenient for medical staff to operate, and can meet various requirements of clinical infusion treatment. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a schematic view of the positive structure of the present application.
[0022] Figure 2 It is a schematic view of the positive structure of the present application. Figure 1
[0023] Figure 3 It is a schematic view of the positive structure of the present application.
[0024] Figure 4 It is a schematic view of the positive structure of the present application.
[0025] Figure 5 It is a schematic view of the positive structure of the present application.
[0026] In the figure: 1, first infusion catheter; 2, drip chamber; 3, puncture device; 4, shunt baffle; 5, flow regulator; 6, side plate; 7, second infusion catheter; 8, filter device; 801, shell; 802, support structure; 803, precision filter layer; 804, primary filter layer; 805, embedded plug; 806, extension straight pipe; 807, luer joint; 9, connecting block; 901, connecting plate; 902, embedded groove; 903, extension flap; 904, top plate; 905, notch groove; 10, intravenous needle group. DETAILED DESCRIPTION
[0027] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0029] like Figures 1-5 As shown, the present invention provides a technical solution: a green, environmentally friendly, biodegradable, disposable precision filter infusion set, including a first infusion tubing 1, a filter device 8, and a connecting block 9. A puncture device 3 is provided at the inlet end of the first infusion tubing 1. A drip chamber 2 is provided at one end of the inside of the first infusion tubing 1. The drip chamber 2 is funnel-shaped with a wider top and a narrower bottom. Diverting baffles 4 are alternately arranged inside the drip chamber 2. A filter device 8 is provided at the outlet end of the first infusion tubing 1. A second infusion tubing 7 is provided on the other side of the outlet end of the filter device 8. Connecting blocks 9 are provided at both ends of the filter device 8. A flow regulator 5 is provided at one end of the inside of the second infusion tubing 7. An intravenous needle assembly 10 is connected to the outlet end of the second infusion tubing 7.
[0030] The filter device 8 includes a housing 801, a support structure 802, a precision filter layer 803, a primary filter layer 804, a fitting plug 805, an extension straight tube 806, and a Luer connector 807. The support structure 802 is installed inside the housing 801, and the primary filter layer 804 is provided on the upper inner side of the support structure 802, while the precision filter layer 803 is provided on the lower inner side of the support structure 802. The fitting plug 805 is installed on both sides of the housing 801, and the extension straight tube 806 extends from the outer side of the fitting plug 805, while the Luer connector 807 is provided on the outer side of the extension straight tube 806.
[0031] The interface end of the connecting block 9 is provided with a connecting plate 901, and an embedded groove 902 is provided in the middle of the inner side of the connecting plate 901. An extension folding plate 903 extends from the outer side of the connecting plate 901, and a notch 905 is provided on the inner side of the horizontal end of the extension folding plate 903. A top plate 904 is provided on both sides of the notch of the notch 905.
[0032] The connecting plate 901 is matched with the dimensions of the recessed groove 902 and the Luer connector 807, and the notch 905 and the recessed groove 902 are matched in the upper and lower positions.
[0033] The primary filter layer 804 is made of biodegradable nonwoven fabric with large pore size, the precision filter layer 803 is made of nanofiber membrane material, and the support structure 802 is made of biodegradable porous support. Side plates 6 are symmetrically arranged on both sides of the flow regulator 5. The dimensions of the extension straight tube 806 and the notch 905 are interlocked, and the dimensions of the top plate 904 and the vertical end of the extension fold 903 are matched when the top plate 904 is vertical. When the top plate 904 is vertical, it can compress the bottom wall of the Luer connector 807 embedded in the inner groove 902. The flow regulator 5 adopts a compression structure and is set on the second infusion tubing 7 and located below the drip chamber 2. By adjusting the degree of compression of the infusion tubing by the flow regulator 5, the diameter of the infusion tubing can be controlled, thereby achieving precise adjustment of the infusion rate. The intravenous needle assembly 10 is made of medical stainless steel, and the needle tip is specially treated.
[0034] The filtration device 8 is the core component of this invention, comprising a housing 801, a support structure 802, a precision filtration layer 803, and a primary filtration layer 804. The housing 801 is cylindrical, with both ends sealed and fixed by fitting plugs 805. The primary filtration layer 804 uses a biodegradable non-woven fabric material with large pores, capable of filtering out larger particulate impurities in the medication, such as fibers and rubber fragments, thus performing preliminary purification of the medication. The precision filtration layer 803 uses a nanofiber membrane material with extremely small pores, effectively filtering out bacteria, pyrogens, and tiny particles, achieving a filtration accuracy of less than 0.22 μm, ensuring the purity of the medication administered to the patient. The support structure 802, located between the primary filtration layer 804 and the precision filtration layer 803, is composed of a biodegradable porous support, used to support the filtration layers, preventing deformation or damage under medication pressure, and ensuring that the medication passes through the filtration layers uniformly.
[0035] An extension tube 806 and a Luer connector 807 are installed on the outside of the interlocking plug 805. During installation, the extension tube 806 can be engaged inside the notch 905, and the Luer connector 807 can be inserted into the recess 902 of the connecting plate 901 to achieve insertion and removal fixation. Then, the two sets of top plates 904 inside the extension folding plate 903 are rotated to make the top plates 904 vertical, which compresses the bottom wall of the Luer connector 807, thereby achieving secondary reinforcement of the Luer connector 807 and ensuring the stability of the entire connector during connection.
[0036] In the actual production process, injection molding and other processes are first used to make components such as infusion tubing, puncture device, drip chamber, flow regulator, and filter device shell from biodegradable biomaterials such as polylactic acid (PLA) and polybutylene adipate terephthalate (PBAT). Medical stainless steel is then processed into intravenous needles, and the needle tips are specially treated.
[0037] During assembly, insert one end of the puncture device 3 into one end of the first infusion tubing 1, ensuring a tight connection; install the drip chamber 2 in a suitable position in the middle of the first infusion tubing 1; place the flow regulator 5 on the second infusion tubing 7, located below the drip chamber 2; install the primary filter layer 804, support structure 802, and precision filter layer 803 of the filter device 8 sequentially inside the outer casing 801, and then connect both ends of the filter device 8 to the infusion tubings on both sides; finally, connect the intravenous needle to the other end of the second infusion tubing 7, ensuring a leak-free connection.
[0038] In clinical use, medical staff first insert the puncture device into the sealed cap of the infusion bottle or bag, then squeeze the drip chamber to allow the medication to flow in. The medication then passes through the infusion tubing into the filtration device, first passing through a primary filtration layer to remove larger particles, and then through a precision filtration layer for further filtration. The dripping pattern is observed, and the flow regulator is adjusted to a suitable infusion rate. Finally, the medication is administered to the patient through a vein needle. After use, the infusion set can be treated as medical waste. Due to its biodegradable material properties, it will naturally degrade within a certain period of time, reducing environmental pollution.
[0039] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.
Claims
1. A green, environmentally friendly, biodegradable, disposable precision filter infusion set, characterized in that, The device includes a first infusion catheter (1), a filter (8), and a connecting block (9). A puncture device (3) is provided at the inlet end of the first infusion catheter (1). A drip chamber (2) is provided at one end of the inside of the first infusion catheter (1). The drip chamber (2) is funnel-shaped with a wider top and a narrower bottom. Diverting baffles (4) are arranged alternately inside the drip chamber (2). A filter (8) is provided at the outlet end of the first infusion catheter (1). A second infusion catheter (7) is provided on the other side of the outlet end of the filter (8). Connecting blocks (9) are provided at both ends of the filter (8). A flow regulator (5) is provided at one end of the inside of the second infusion catheter (7). An intravenous needle assembly (10) is connected to the outlet end of the second infusion catheter (7). The filter device (8) includes a housing (801), a support structure (802), a precision filter layer (803), a primary filter layer (804), a fitting plug (805), an extension tube (806), and a Luer connector (807). The support structure (802) is installed inside the housing (801), and the primary filter layer (804) is provided on the upper inner side of the support structure (802), and the precision filter layer (803) is provided on the lower inner side of the support structure (802). The fitting plug (805) is installed on both sides of the housing (801), and the extension tube (806) extends outward from the fitting plug (805), and the Luer connector (807) is provided on the outer side of the extension tube (806). The interface end of the connecting block (9) is provided with a connecting plate (901), and an embedded groove (902) is provided in the middle of the inner side of the connecting plate (901). An extension folding plate (903) extends from the outer side of the connecting plate (901), and a notch (905) is provided on the inner side of the horizontal end of the extension folding plate (903). Top plates (904) are provided on both sides of the notch of the notch (905). The connecting plate (901) is matched with the size of the inner groove (902) and the Luer connector (807), and the notch (905) and the inner groove (902) are matched with each other in the upper and lower positions; The primary filter layer (804) is made of a biodegradable nonwoven fabric with a large pore size, the precision filter layer (803) is made of a nanofiber membrane material, and the support structure (802) is made of a biodegradable porous scaffold.
2. The green, environmentally friendly, biodegradable, disposable precision filter infusion set according to claim 1, characterized in that: The flow regulator (5) has side plates (6) symmetrically arranged on both sides.
3. The green, environmentally friendly, biodegradable, disposable precision filter infusion set according to claim 1, characterized in that: The dimensions of the extended straight tube (806) and the notch (905) are mutually fitted, and the dimensions of the top plate (904) and the vertical end of the extended folding plate (903) are mutually matched when the top plate (904) is in the vertical state.
4. The green, environmentally friendly, biodegradable, disposable precision filter infusion set according to claim 1, characterized in that: When the top plate (904) is vertical, it can press against the bottom wall of the Luer connector (807) embedded in the inner groove (902).
5. The green, environmentally friendly, biodegradable, disposable precision filter infusion set according to claim 1, characterized in that: The flow regulator (5) adopts a squeeze-type structure, is set on the second infusion tubing (7) and located below the drip chamber (2).
6. The green, environmentally friendly, biodegradable, disposable precision filter infusion set according to claim 5, characterized in that: The diameter of the infusion tubing can be controlled by adjusting the degree of compression of the infusion tubing by the flow regulator (5), thereby achieving precise adjustment of the infusion rate.
7. The green, environmentally friendly, biodegradable, disposable precision filter infusion set according to claim 1, characterized in that: The intravenous needle assembly (10) is made of medical stainless steel, and the needle tip has undergone special treatment.