Infusion pump capable of preventing thrombus blockage

Abstract

The invention belongs to the technical field of medical instruments, and relates to a thrombus blockage prevention infusion pump which comprises a pump body, an infusion pipeline and a main control assembly, the pump body is provided with a pipeline clamping groove, an operation panel and an installation cavity, the infusion pipeline is installed in the pipeline clamping groove in a matched mode, and the main control assembly is fixed in the installation cavity. The operation panel is electrically connected to the main control assembly, and the main control assembly is used for basic infusion control and simple signal feedback; the anti-thrombus infusion pump further comprises a mechanical anti-thrombus mechanism, a pipeline sealing and fixing assembly and an auxiliary supporting assembly, and the mechanical anti-thrombus mechanism and the pipeline sealing and fixing assembly are both installed on the pump body and matched with the infusion pipeline. Wherein the mechanical anti-thrombus mechanism comprises a pulse type mechanical liquid pushing piece and a pipeline micro-vibrator mechanism, and the pipeline micro-vibrator mechanism is integrated on the inner wall of a pipeline clamping groove; the system has the effects of precise thrombus monitoring, active intervention, intelligent adjustment and blockage reduction.

Description

An infusion pump that prevents blood clots from clogging Technical Field

[0001] This invention relates to the technical field of medical devices, and more particularly to an infusion pump that prevents thrombosis and blockage. Background Technology

[0002] Infusion pumps, as core equipment for precise drug delivery in clinical practice, are widely used in various medical scenarios. They ensure the effectiveness and safety of drug therapy by precisely controlling the infusion rate and dosage. However, thrombosis has always been a critical pain point that urgently needs to be addressed in clinical practice during long-term infusions. On the one hand, when the flow rate of the infusion solution is slow, blood can easily flow back to the interface between the tubing and the blood vessel. Blood components can then deposit and form thrombi, blocking the tubing and causing infusion interruptions, affecting the continuity of treatment. On the other hand, thrombi that break off and travel with the bloodstream may cause serious complications such as pulmonary embolism and cerebral thrombosis, threatening the patient's life. In addition, existing thrombosis prevention methods mostly rely on heparin sealing and periodic manual flushing, which not only increases the workload of medical staff, but also carries the risk of bleeding with heparin use. Improper control of the force used for manual flushing can easily damage the vascular endothelium, which may exacerbate thrombus formation.

[0003] Existing antithrombotic infusion devices have significant limitations: for example, the patent with publication number CN108578824A uses the contraction pressure of an elastic reservoir to achieve continuous infusion, which can only reduce blood reflux through simple continuous infusion and cannot provide targeted intervention for different stages of thrombus formation. Furthermore, it lacks thrombus monitoring capabilities, making it difficult to provide early warning of blockage risks. The disclosed novel continuous slow infusion device relies on a hollow nanomembrane to achieve positive pressure infusion. While it can reduce thrombus formation, its complex structure and high cost mean it can only achieve passive thrombus prevention and cannot actively clear thrombi in their early stages, resulting in limited thrombus prevention effectiveness. Simultaneously, most existing infusion pumps only have bubble monitoring capabilities (such as the dual ultrasonic bubble monitoring technology in Mindray Medical's BeneFusion e-series infusion pumps), failing to combine thrombus monitoring with anti-blockage intervention. This prevents the formation of a closed loop of "monitoring-early warning-intervention," making it difficult to fundamentally solve the problem of thrombus blockage.

[0004] Therefore, developing an anti-thrombotic infusion pump that can achieve accurate thrombosis monitoring, active intervention, intelligent adjustment, high safety, convenient operation, and strong adaptability, and overcome the shortcomings of existing technologies, has become an urgent need in the current medical equipment field. Summary of the Invention

[0005] The purpose of this invention is to provide an infusion pump that prevents thrombosis, thereby solving the technical problem that infusion pumps are prone to thrombosis and achieving the goals of accurate thrombosis monitoring, active intervention, intelligent adjustment, and reducing the possibility of blockage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An infusion pump for preventing thrombosis includes: a pump body, an infusion line, and a main control component. The pump body is provided with a line slot, an operation panel, and a mounting cavity. The infusion line is adapted to be installed in the line slot. The main control component is fixed in the mounting cavity. The operation panel is electrically connected to the main control component. The main control component is used for basic infusion control and simple signal feedback.

[0008] It also includes: a mechanical anti-thrombotic mechanism, a pipeline sealing and fixing component, and an auxiliary support component. The mechanical anti-thrombotic mechanism and the pipeline sealing and fixing component are both installed on the pump body and are adapted to and cooperate with the infusion pipeline.

[0009] The mechanical anti-thrombotic mechanism includes a pulse-type mechanical liquid-pushing component and a pipeline micro-vibration mechanism, wherein the pipeline micro-vibration mechanism is integrated into the inner wall of the pipeline slot;

[0010] The pulsed mechanical pusher is installed on the side of the pump body near the patient and is connected to the infusion line. The pulsed mechanical pusher includes a cam, a pusher piston, a reset spring, and a pusher tube. The cam is fixed on the output shaft of the drive motor. One end of the pusher piston is in contact with the cam, and the other end extends into the pusher tube. The reset spring is sleeved on the pusher piston and is used to reset the pusher piston, so as to realize pulsed pusher to clear the initial deposited thrombus.

[0011] As a preferred embodiment of the present invention, the pipeline micro-vibration mechanism includes a micro mechanical vibrating plate, an elastic support base, and an adjustment knob. The elastic support base is fixed to the inner wall of the pipeline slot, the micro mechanical vibrating plate is fitted to the infusion pipeline and connected to the elastic support base, and the adjustment knob passes through the side wall of the pump body and is threadedly connected to the elastic support base to adjust the vibration amplitude.

[0012] The micro-mechanical vibrating pad is made of medical-grade stainless steel with a thickness of 0.1-0.3mm. The adjustment knob has anti-slip texture on its surface. By rotating the adjustment knob, the tightness of the elastic support can be changed, thereby adjusting the vibration amplitude of the micro-mechanical vibrating pad. The vibration amplitude adjustment range is 0.1-0.5mm.

[0013] As a preferred embodiment of the present invention, it further includes a detachable anticoagulant mixing mechanism;

[0014] The detachable anticoagulant mixing mechanism includes a mixing connector, an anticoagulant reservoir, and a mechanical metering valve. The mixing connector is detachably connected to the infusion line via a sealing thread. The anticoagulant reservoir is connected to the side wall of the pump body via a snap-fit ​​and communicates with the mixing connector. The mechanical metering valve is installed at the connection between the mixing connector and the anticoagulant reservoir to adjust the anticoagulant infusion dosage.

[0015] The inner wall of the mixing connector is provided with a spiral guide groove to promote thorough mixing of the anticoagulant and the drug solution; the anticoagulant reservoir is made of transparent medical-grade PET material with a volume of 5-10ml; the mechanical metering valve has a metering range of 0.01-0.1ml / h and the knob is marked with scale.

[0016] As a preferred embodiment of the present invention, the pipeline sealing and fixing assembly includes a layered slot structure, a sealing gland, and a quick connector. The layered slot structure includes a main slot and an auxiliary positioning slot. Both the main slot and the auxiliary positioning slot have elastic sealing gaskets on their inner walls, and the surface of the elastic sealing gaskets has anti-slip textures. The sealing gland is rotatably connected to the pump body via a hinge and covers the top of the pipeline slot. The inner wall of the sealing gland has sealing protrusions that are adapted to the pipeline slot. The quick connector includes an input connector and an output connector, which are respectively installed at the inlet and outlet ends of the pump body. The inner wall of the quick connector has an annular sealing groove, and a sealing ring is provided in the annular sealing groove.

[0017] The main slot and auxiliary positioning slot of the layered slot structure are both arc-shaped to match the shape of the infusion tubing; the elastic sealing gasket is made of medical-grade silicone with a thickness of 1-2mm and annular interlaced anti-slip texture.

[0018] The quick connector has 2-3 annular sealing grooves, and each annular sealing groove is equipped with a sealing ring. The sealing ring is made of fluororubber. The quick connector adopts a snap-fit ​​connection method that combines a snap-fit ​​and a sealing thread, which facilitates quick assembly and disassembly and improves sealing reliability.

[0019] As a preferred embodiment of the present invention, the auxiliary support component includes a foldable support foot, a height adjustment screw, and an anti-slip base. The foldable support foot is rotatably connected to the bottom of the pump body via a hinge. The height adjustment screw is threaded through the bottom of the foldable support foot. The anti-slip base is fixed to the lower end of the height adjustment screw and is made of medical-grade anti-slip rubber.

[0020] As a preferred embodiment of the present invention, the cam of the pulse-type mechanical liquid pushing component adopts an eccentric cam structure with an eccentricity of 2-5mm, and cams with different eccentricities can be replaced; the liquid pushing piston is made of medical-grade rubber material with a wear-resistant coating on the surface, and the liquid pushing tube is connected to the infusion line through a sealing thread.

[0021] As a preferred embodiment of the present invention, the foldable support feet are provided in 3-4 sizes, evenly distributed at the bottom of the pump body, and are made of lightweight aluminum alloy. The foldable angle is 0-90°. The height adjustment screw has an adjustment range of 10-30mm. The anti-slip base has a diameter of 30-50mm and has anti-slip protrusions on its surface.

[0022] As a preferred embodiment of the present invention, the pump body is made of medical-grade ABS material, the surface of which is treated with antibacterial agents, and the side wall of the pump body is provided with a non-slip handle for easy hand gripping, and the surface of the handle is provided with an arc-shaped groove.

[0023] The inner wall of the mounting cavity is provided with heat dissipation holes and a dustproof screen. The cover plate of the mounting cavity adopts a detachable bolt fixing structure for easy inspection and maintenance.

[0024] As a preferred embodiment of the present invention, the infusion tubing is provided with a spring-loaded mechanical check valve near the patient end to prevent blood backflow; the operation panel is provided with an infusion rate adjustment key, a pulse frequency adjustment key, a mode switching key, and an emergency stop key.

[0025] As a preferred embodiment of the present invention, all components of the mechanical antithrombotic mechanism are detachable, facilitating cleaning, disinfection, and maintenance.

[0026] The beneficial effects of this invention are:

[0027] 1. The mechanical structure design is creatively enhanced, significantly reducing reliance on electrical components and overcoming the shortcomings of existing technologies that rely on electrical monitoring and intervention. Through the synergistic effect of pulsed mechanical liquid pushing components and pipeline micro-vibrator mechanisms, the initial mechanical clearance and continuous prevention of thrombus are achieved. At the same time, the overall mechanical structure of this application has strong stability and is not easily damaged. Moreover, it does not require complex electrical control, reducing the cost of use and maintenance, and has a significant anti-thrombotic effect.

[0028] 2. The pipeline sealing and fixing assembly adopts an integrated design of layered grooves, sealing caps, and multiple sealing rings, thereby achieving a firm fixation and double sealing of the infusion pipeline. This effectively prevents pipeline displacement, leakage, and air ingress, reducing the risk of blood reflux and thrombosis from a mechanical structure perspective. At the same time, the quick connectors facilitate disassembly and assembly, improving operational convenience. The overall structure is stable and less prone to errors.

[0029] 3. The mechanical antithrombotic mechanism adopts a detachable and adjustable design. The pulse-type mechanical pusher can be replaced with cams of different eccentricities to adjust the pulse thrust. The tubing micro-vibrator mechanism can adjust the vibration amplitude via a knob. The mechanical metering valve can precisely adjust the anticoagulant dosage, adapting to the needs of different patients and different infusion scenarios, and has strong versatility.

[0030] 4. The auxiliary support components feature foldable support feet and height adjustment screws to adapt to different placement scenarios. The non-slip base enhances the stability of the pump body. The pump body is made of medical-grade antibacterial material and has a non-slip handle on the surface, balancing practicality and safety, and making it easy to carry and maintain.

[0031] 5. The structure is reasonably designed, and all mechanical components work together. It is easy to operate and medical staff can operate it proficiently without professional training, reducing the number of manual flushing times and reducing workload. The mechanical seal has excellent performance, avoiding adverse reactions caused by leakage and air ingress. At the same time, the detachable components facilitate cleaning and disinfection, improving hygiene and safety, and have extremely high clinical application value. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the structure of the anti-thrombotic infusion pump of the present invention;

[0033] Figure 2 is a schematic diagram of the structure of the pulse-type mechanical liquid-pushing component of the present invention;

[0034] Figure 3 is a schematic diagram of the pipeline micro-vibration mechanism of the present invention;

[0035] Figure 4 is a schematic diagram of the detachable anticoagulant mixing mechanism of the present invention;

[0036] Figure 5 is a structural schematic diagram of the pipeline sealing and fixing assembly of the present invention;

[0037] Figure 6 is a schematic diagram of the auxiliary support component of the present invention.

[0038] Legend:

[0039] 1. Pump body; 11. Infusion pipeline; 111. Spring-loaded mechanical check valve; 12. Pipeline slot; 13. Control panel; 14. Mounting cavity; 141. Heat dissipation holes; 142. Dustproof screen;

[0040] 2. Main control component;

[0041] 3. Mechanical antithrombotic mechanism; 31. Pulsating mechanical liquid pushing component; 311. Cam; 312. Liquid pushing piston; 313. Return spring; 314. Liquid pushing tube; 32. Pipeline micro-vibrator mechanism; 321. Miniature mechanical vibrator; 322. Elastic support seat; 323. Adjustment knob; 33. Detachable anticoagulant mixing mechanism; 331. Mixing connector; 332. Anticoagulant reservoir; 333. Mechanical metering valve; 34. Spiral guide groove;

[0042] 4. Pipeline sealing and fixing components; 41. Layered slot structure; 411. Main slot; 412. Auxiliary positioning slot; 42. Sealing gland; 43. Quick connector; 431. Input connector; 432. Output connector; 44. Elastic sealing gasket;

[0043] 5. Auxiliary support components; 51. Foldable support feet; 52. Height adjustment screw; 53. Anti-slip base. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1:

[0046] As shown in Figures 1 to 6, an infusion pump for preventing thrombosis includes a pump body 1, an infusion line 11, and a main control component 2. The pump body 1 is provided with a line slot 12, an operation panel 13, and a mounting cavity 14. The infusion line 11 is adapted to be installed in the line slot 12, and the main control component 2 is fixed in the mounting cavity 14. It also includes a mechanical anti-thrombosis mechanism 3, a line sealing and fixing component 4, and an auxiliary support component 5. The mechanical anti-thrombosis mechanism 3 and the line sealing and fixing component 4 are both installed on the pump body 1 and adapted to cooperate with the infusion line 11. The main control component 2 is only used for basic infusion control and simple signal feedback, which greatly reduces the number of electrical monitoring and intervention components.

[0047] The mechanical anti-thrombotic mechanism 3 is used to achieve initial mechanical removal and continuous prevention of thrombi. It includes a pulsed mechanical liquid-pushing component 31, a tubing micro-vibrator mechanism 32, and a detachable anticoagulant mixing mechanism 33. The pulsed mechanical liquid-pushing component 31 is installed on the side of the pump body 1 near the patient end and is connected to the infusion tubing 11. It adopts a mechanical cam 311 transmission structure, which does not require complex electrical control. The rotation of the cam 311 pushes the liquid-pushing piston 312, outputting a low-frequency pulsed liquid thrust to impact the inner wall of the tubing, remove the initially deposited thrombi, and prevent the thrombi from growing further.

[0048] As shown in Figures 1 to 6, the pipeline micro-vibrator mechanism 32 is integrated into the inner wall of the pipeline slot 12, including a micro-mechanical vibrator 321, an elastic support 322, and an adjustment knob 323. The elastic support 322 is fixed to the inner wall of the pipeline slot 12. The micro-mechanical vibrator 321 is fitted to the infusion pipeline 11 and connected to the elastic support 322. The adjustment knob 323 passes through the side wall of the pump body 1 and is threaded to the elastic support 322. By rotating the adjustment knob 323, the tightness of the elastic support 322 is changed, thereby adjusting the contact force and vibration amplitude of the micro-mechanical vibrator 321 with the infusion pipeline 11, preventing blood components from depositing on the inner wall of the pipeline, while promoting the flow of medicine in the pipeline and reducing blood backflow. In this embodiment, the micro mechanical vibrating pad 321 is made of medical-grade stainless steel with a thickness of 0.1-0.3mm. It has good elasticity and vibration transmission, and the vibration amplitude adjustment range is 0.1-0.5mm. The adjustment knob 323 has anti-slip texture on its surface, which is convenient for medical staff to adjust manually without the need for electrical control, making it easy to operate.

[0049] The detachable anticoagulant mixing mechanism 33 includes a mixing connector 331, an anticoagulant reservoir 332, and a mechanical metering valve 333. The mixing connector 331 is detachably connected to the infusion line 11 via a sealing thread. The anticoagulant reservoir 332 is fixed to the side wall of the pump body 1 via a snap-fit ​​structure and communicates with the mixing connector 331. The mechanical metering valve 333 is installed at the connection between the mixing connector 331 and the anticoagulant reservoir 332. The infusion dose of the anticoagulant is adjusted by rotating the metering knob. The mechanical seal structure prevents leakage and does not require electrical drive, thus achieving precise mixing and infusion of the anticoagulant and the drug solution, and assisting in mechanical antithrombosis. In this embodiment, the anticoagulant reservoir 332 is made of transparent medical-grade PET material with a volume of 5-10ml, making it easy for medical staff to observe the remaining amount of anticoagulant; the mechanical metering valve 333 has a metering range of 0.01-0.1ml / h, high metering accuracy, and the knob is marked with scale marks, making it easy to accurately adjust the anticoagulant dosage; the inner wall of the mixing connector 331 is provided with a spiral guide groove 34, which can promote the full mixing of anticoagulant and drug solution and avoid excessive local concentration.

[0050] The pipeline sealing and fixing assembly 4 is used to securely fix and seal the infusion pipeline 11 to prevent pipeline displacement, leakage, and air ingress. It includes a layered slot structure 41, a sealing cap 42, and a quick connector 43. The layered slot structure 41 includes a main slot 411 and an auxiliary positioning slot 412. The main slot 411 is used to place the main body of the infusion pipeline 11, and the auxiliary positioning slot 412 is used to place the branch connectors of the infusion pipeline 11. The inner walls of the main slot 411 and the auxiliary positioning slot 412 are provided with elastic sealing gaskets 44. The surface of the elastic sealing gaskets 44 is provided with anti-slip texture to increase the friction with the infusion pipeline 11 and achieve sealing at the same time. In this embodiment, both the main slot 411 and the auxiliary positioning slot 412 of the layered slot structure 41 adopt an arc-shaped structure to match the shape of the infusion tubing 11. The elastic sealing gasket 44 is made of medical-grade silicone with a thickness of 1-2 mm. The anti-slip texture is annular interlaced texture, which increases friction and improves the sealing effect, preventing tubing displacement and leakage. The quick connector 43 has 2-3 annular sealing grooves, each with a sealing ring made of fluororubber, which is resistant to high temperatures and corrosion, suitable for various medications, and ensures the sealing performance of the connection. The quick connector 43 uses a snap-fit ​​connection method with a sealing thread, which facilitates quick assembly and disassembly and improves sealing reliability.

[0051] Meanwhile, the sealing cap 42 is rotatably connected to the pump body 1 via a hinge, and covers the pipeline slot 12. The inner wall of the sealing cap 42 is provided with a sealing protrusion that matches the pipeline slot 12. After the cap is closed, the sealing protrusion presses against the infusion pipeline 11 to achieve double sealing. The quick connector 43 includes an input connector 431 and an output connector 432, which are respectively installed at the inlet and outlet ends of the pump body 1 and are detachably and sealingly connected to the infusion pipeline 11. The inner wall of the quick connector 43 is provided with an annular sealing groove, and a high-temperature resistant medical sealing ring is provided in the annular sealing groove to ensure that there is no leakage or air intake at the connection point, and at the same time, it is convenient to quickly replace the infusion pipeline 11.

[0052] The auxiliary support component 5, used to improve the stability and adaptability of the pump body 1, includes a foldable support foot 51, a height adjustment screw 52, ​​and an anti-slip base 53. The foldable support foot 51 is rotatably connected to the bottom of the pump body 1 via a hinge, and can be folded for easy carrying and storage. The height adjustment screw 52 is threaded through the bottom of the foldable support foot 51. The anti-slip base 53 is fixed to the lower end of the height adjustment screw 52 and is made of medical anti-slip rubber. The height of the support foot can be changed by rotating the height adjustment screw 52 to adapt to different infusion scenarios (such as bedside, desktop). The anti-slip base 53 can prevent the pump body 1 from sliding and improve the safety of use. The pump body 1 has 3-4 foldable support feet 51, which are evenly distributed at the bottom. The support feet are made of lightweight aluminum alloy, which is strong and lightweight. The folding angle is 0-90°. After folding, the bottom of the pump body 1 is flat and easy to store. The height adjustment screw 52 has an adjustment range of 10-30mm. The anti-slip base 53 has a diameter of 30-50mm and anti-slip bumps on the surface to further improve the anti-slip effect.

[0053] In this embodiment, the inner wall of the mounting cavity 14 of the pump body 1 is provided with heat dissipation holes 141 and dustproof mesh 142. The heat dissipation holes 141 are used for basic heat dissipation of the main control component 2, and the dustproof mesh 142 prevents dust from entering the mounting cavity 14 and protects the main control component 2. The operation panel 13 is only provided with basic parameter adjustment keys, mode switching keys and emergency stop keys. The parameter adjustment keys are used to adjust the infusion rate and pulse frequency. The mode switching keys are used to switch between the normal infusion mode and the anti-thrombosis enhancement mode. The emergency stop key is used to quickly stop the infusion in case of abnormal conditions.

[0054] In this embodiment, the infusion tubing 11 is made of medical-grade silicone material, with a hydrophilic inner wall and a smooth surface, which can reduce the deposition of blood components and medication, thereby reducing the probability of thrombosis from the material perspective. The infusion tubing 11 is equipped with a mechanical one-way valve near the patient end, which adopts a spring-loaded one-way sealing structure. It does not require electrical control, but automatically opens based on the pressure of the medication and automatically closes when there is no medication flow, preventing blood from flowing back into the infusion tubing 11. Together with the mechanical anti-thrombotic mechanism 3, it further reduces the risk of thrombosis.

[0055] The cam 311 transmission structure of the pulse-type mechanical liquid pushing component 31 includes a drive motor (only used to provide basic power, without complex electrical control), a cam 311, a liquid pushing piston 312, a return spring 313, and a liquid pushing tube 314. The drive motor is fixed inside the pump body 1, and the cam 311 is fixed on the output shaft of the drive motor. One end of the liquid pushing piston 312 is in contact with the cam 311, and the other end extends into the liquid pushing tube 314. The return spring 313 is sleeved on the liquid pushing piston 312, with one end connected to the end of the liquid pushing tube 314 and the other end connected to the limiting platform of the liquid pushing piston 312. When the cam 311 rotates, it pushes the liquid pushing piston 312 to reciprocate. The return spring 313 assists the liquid pushing piston 312 to return to its original position, realizing pulse-type liquid pushing. The structure is simple, stable, and not easily damaged.

[0056] Meanwhile, the cam 311 of the pulse-type mechanical liquid pusher 31 adopts an eccentric cam 311 structure with an eccentricity of 2-5mm. By replacing the cam 311 with different eccentricities, the magnitude of the pulse thrust can be adjusted to adapt to infusion tubing 11 of different diameters and different thrombus removal requirements. The liquid pusher piston 312 is made of medical-grade rubber with a wear-resistant coating on the surface to improve service life. The connection between the liquid pusher tube 314 and the infusion tubing 11 adopts a sealed thread structure, which, together with the sealing gasket, achieves double sealing to prevent leakage.

[0057] The pump body 1 is made of medical-grade ABS material and the surface is treated with antibacterial agents to effectively inhibit bacterial growth. The side wall of the pump body 1 is equipped with a non-slip handle for easy hand grip. The surface of the handle is provided with an arc-shaped groove to fit the contour of the hand, making it easy to carry and move the pump body 1. The cover of the mounting cavity 14 adopts a detachable structure and is fixed by bolts, which facilitates the inspection and maintenance of the main control component 2.

[0058] In summary, when using the anti-thrombotic infusion pump of the present invention, first unfold the foldable support foot 51, and adjust the height of the pump body 1 by rotating the height adjustment screw 52 to make the pump body 1 stable. The anti-slip base 53 fits against the placement surface to prevent slippage. The infusion pipeline 11 is installed in the layered slot structure 41, the main slot 411 places the pipeline body, the auxiliary positioning slot 412 places the branch joint, the elastic sealing gasket 44 fits against the pipeline surface, and the sealing cap 42 is closed to make the sealing protrusion press against the infusion pipeline 11, so as to achieve firm fixation and double sealing.

[0059] The anticoagulant reservoir 332 is fixed to the side wall of the pump body 1 by a snap fastener. The mixing connector 331 is connected to the infusion line 11 through a sealing thread. The knob of the mechanical metering valve 333 is rotated to adjust the anticoagulant infusion dose according to the patient's needs. The input connector 431 of the quick connector 43 is connected to the drug bag, and the output connector 432 is connected to the patient's infusion needle to complete the tubing connection.

[0060] The infusion pump is started via the control panel 13. The main control component 2 controls the drive motor to rotate, which drives the cam 311 of the pulse mechanical pusher 31 to rotate. The cam 311 pushes the pusher piston 312 to reciprocate. The reset spring 313 assists in reset. The pusher piston 312 outputs low-frequency pulse liquid thrust, which is transmitted to the infusion line 11 through the pusher tube 314, impacting the inner wall of the line and clearing the initial deposited thrombus. At the same time, the adjustment knob 323 of the micro-vibrator mechanism 32 of the line is rotated to make the micro-mechanical vibrator 321 fit tightly against the infusion line 11. The elastic support 322 drives the micro-mechanical vibrator 321 to generate micro-vibration, preventing blood component deposition and promoting drug flow.

[0061] The anticoagulant in the anticoagulant reservoir 332 flows into the mixing connector 331 at a preset dose through the mechanical metering valve 333. After being fully mixed with the drug solution in the spiral guide groove 34, it is infused into the patient's body through the infusion line 11 to help prevent thrombosis. If abnormalities such as line blockage or leakage occur during the infusion process, pressing the emergency stop button will cause the main control component 2 to control the drive motor to stop working. Medical staff can quickly disassemble the quick connector 43 and the mixing connector 331 and replace the infusion line 11 without complicated operations.

[0062] After the infusion is completed, turn off the infusion pump, disassemble the anticoagulant reservoir 332 and the mixing connector 331, clean and disinfect them for easy reuse; fold the foldable support foot 51 and store the pump body 1 in the designated position to complete the entire infusion process.

[0063] The anti-thrombotic infusion pump of this embodiment is used in long-term infusion scenarios for critically ill patients in intensive care units. Its specific working process is as follows:

[0064] 1. Equipment debugging: Unfold the three foldable support legs 51, and adjust the pump body 1 to a suitable height by rotating the height adjustment screw 52. Ensure that the anti-slip base 53 fits tightly against the headboard table to ensure that the pump body 1 is stable. Open the cover of the mounting cavity 14, check the installation of the main control component 2 and the drive motor, and close the cover.

[0065] 2. Tubing Installation: Install the infusion tubing 11 into the layered slot structure 41. The main slot 411 holds the tubing body, the auxiliary positioning slot 412 holds the branch connectors, and the elastic sealing gasket 44 fits tightly against the tubing surface. Cover the sealing cap 42, and the sealing protrusion presses the infusion tubing 11 to achieve fixation and sealing. Connect the mixing connector 331 to the infusion tubing 112 through the sealing thread. The anticoagulant reservoir 332 is fixed to the side wall of the pump body 1 by a buckle. Rotate the knob of the mechanical metering valve 333 to adjust the anticoagulant infusion dose to 0.02 ml / h. Connect the input connector 431 of the quick connector 43 to the drug bag and the output connector 432 to the patient's infusion needle, ensuring a firm connection and no leakage.

[0066] 3. Anti-thrombosis setting: Rotate the adjustment knob 323 of the micro-vibrator mechanism 32 of the tubing to make the micro-mechanical vibrating plate 321 fit tightly against the infusion tubing 11 and adjust it to a suitable vibration amplitude; set the infusion rate to 5ml / h and the pulse frequency to 2 times / minute through the operation panel 13, switch to the anti-thrombosis enhancement mode, and start the infusion pump;

[0067] 4. Infusion process: The main control component 2 controls the drive motor to rotate, which drives the cam 311 to rotate. The cam 311 pushes the pusher piston 312 to reciprocate. The reset spring 313 assists in reset. The pusher piston 312 outputs a low-frequency pulsed liquid thrust, which is transmitted to the infusion line 11 through the pusher tube 314, impacting the inner wall of the line and clearing the initial deposited thrombus. The micro mechanical vibration plate 321721 generates micro-vibration to prevent blood component deposition and promote drug flow. The anticoagulant in the anticoagulant reservoir 332 flows into the mixing connector 331 at a dose of 0.02 ml / h through the mechanical metering valve 333. After being fully mixed with the drug in the spiral guide groove 34, it is infused into the patient's body.

[0068] 5. Troubleshooting: If a blockage is found in the tubing during infusion, press the emergency stop button to stop the drive motor 715; disassemble the quick connector 43 and the mixing connector 331, replace the infusion tubing 11, reconnect it, and restart the infusion pump to resume infusion; if leakage occurs, check the sealing of the quick connector 43 and the mixing connector 331, tighten the sealing threads or replace the sealing ring.

[0069] 6. End of infusion: Turn off the infusion pump, disassemble the anticoagulant reservoir 332 and mixing connector 331, clean and disinfect them for reuse; fold the foldable support leg 51, store the pump body 1 in the designated position, and the infusion process is complete.

[0070] In this embodiment, by strengthening the mechanical structure design, no complex electrical monitoring intervention is required. The mechanical anti-thrombotic mechanism 3 alone can achieve initial thrombus removal and continuous prevention. The pipeline is firmly sealed and fixed, with no displacement or leakage. Patients experience no discomfort during infusion. The operation is convenient for medical staff, greatly reducing their workload. The anti-thrombotic effect is significant, successfully preventing the occurrence of thrombus blockage.

[0071] Example 2

[0072] The difference between this embodiment and Embodiment 1 is as follows: the cam 311 of the pulse-type mechanical liquid pusher 31 has an eccentricity of 5mm, which can provide greater pulse thrust and is suitable for infusion lines 11 with larger diameters; the micro-mechanical vibrator 321 of the pipeline micro-vibrator mechanism 32 has a thickness of 0.3mm, which provides stronger vibration stability; the anticoagulant reservoir 332 has a volume of 10ml, which is suitable for larger doses of anticoagulant; the quick connector 43 has 3 annular sealing grooves on its inner wall, which provides better sealing performance; and the auxiliary support component 5 has 4 foldable support feet 51, which further improves stability.

[0073] The anti-thrombotic infusion pump of this embodiment is suitable for long-term chemotherapy infusion scenarios for cancer patients. Chemotherapy drugs are highly irritating and have long infusion times, which increases the risk of thrombosis. By optimizing the mechanical structure, the pulse thrust and sealing performance are improved. The mechanical metering valve 333 can accurately adjust the anticoagulant dosage to avoid the risk of bleeding caused by abnormal coagulation function in chemotherapy patients. At the same time, the continuous micro-vibration of the micro-mechanical vibrating plate 321 effectively prevents the deposition of chemotherapy drugs and thrombosis, ensuring the continuity and safety of chemotherapy treatment.

[0074] All the devices selected in this application are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0075] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0076] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An infusion pump designed to prevent thrombosis and blockage, characterized in that, include: The pump body (1), infusion tubing (11), and main control component (2) are provided. The pump body (1) is provided with tubing slot (12), operation panel (13), and mounting cavity (14). The infusion tubing (11) is adapted to be installed in the tubing slot (12). The main control component (2) is fixed in the mounting cavity (14). The operation panel (13) is electrically connected to the main control component (2). The main control component (2) is used for basic infusion control and simple signal feedback. The pump body (1) also includes a mechanical anti-thrombotic mechanism (3), a tubing sealing and fixing component (4), and an auxiliary support component (5). The mechanical anti-thrombotic mechanism (3) and the tubing sealing and fixing component (4) are both installed on the pump body (1) and adapted to cooperate with the infusion tubing (11). The mechanical anti-thrombotic mechanism (3) includes a pulse-type mechanism. The device includes a mechanical pusher (31) and a tubing micro-vibrator mechanism (32), the tubing micro-vibrator mechanism (32) being integrated into the inner wall of the tubing slot (12); the pulse-type mechanical pusher (31) is installed on the side of the pump body (1) near the patient end and is connected to the infusion tubing (11); the pulse-type mechanical pusher (31) includes a cam (311), a pusher piston (312), a reset spring (313), and a pusher tube (314); the cam (311) is fixed on the output shaft of the drive motor; one end of the pusher piston (312) is in contact with the cam (311), and the other end extends into the pusher tube (314); the reset spring (313) is sleeved on the pusher piston (312) for resetting the pusher piston (312) to achieve pulse-type pusher to clear the initial deposited thrombus.

2. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, The pipeline micro-vibrator mechanism (32) includes a micro-mechanical vibrator (321), an elastic support (322), and an adjustment knob (323). The elastic support (322) is fixed to the inner wall of the pipeline slot (12). The micro-mechanical vibrator (321) is fitted to the infusion pipeline (11) and connected to the elastic support (322). The adjustment knob (323) passes through the side wall of the pump body (1) and is threadedly connected to the elastic support (322) to adjust the vibration amplitude. The micro-mechanical vibrator (321) is made of medical-grade stainless steel with a thickness of 0.1-0.3 mm. The surface of the adjustment knob (323) is provided with anti-slip texture. By rotating the adjustment knob (323), the tightness of the elastic support (322) is changed, thereby adjusting the vibration amplitude of the micro-mechanical vibrator (321). The vibration amplitude adjustment range is 0.1-0.5 mm.

3. The infusion pump for preventing thrombosis and blockage according to claim 2, characterized in that, The mechanical antithrombotic mechanism (3) further includes a detachable anticoagulant mixing mechanism (33); the detachable anticoagulant mixing mechanism (33) includes a mixing connector (331), an anticoagulant reservoir (332), and a mechanical metering valve (333). The mixing connector (331) is detachably connected to the infusion line (11) via a sealing thread. The anticoagulant reservoir (332) is connected to the side wall of the pump body (1) via a snap-fit ​​and communicates with the mixing connector (331). The mechanical metering valve (333) 333) is installed at the connection between the mixing connector (331) and the anticoagulant reservoir (332) to adjust the anticoagulant infusion dose; the inner wall of the mixing connector (331) is provided with a spiral guide groove (34) to promote the full mixing of the anticoagulant and the drug solution; the anticoagulant reservoir (332) is made of transparent medical grade PET material and has a volume of 5-10ml; the mechanical metering valve (333) has a metering range of 0.01-0.1ml / h and the knob is marked with scale.

4. The infusion pump for preventing thrombosis and blockage according to claim 3, characterized in that, The pipeline sealing and fixing assembly (4) includes a layered slot structure (41), a sealing gland (42), and a quick connector (43). The layered slot structure (41) includes a main slot (411) and an auxiliary positioning slot (412). The inner walls of the main slot (411) and the auxiliary positioning slot (412) are provided with elastic sealing gaskets (44), and the surface of the elastic sealing gaskets (44) is provided with anti-slip textures. The sealing gland (42) is rotatably connected to the pump body (1) via a hinge and covers the pipeline slot (12). The inner wall of the sealing gland (42) is provided with sealing protrusions that are adapted to the pipeline slot (12). The quick connector (43) includes an input connector (431) and an output connector (432), which are respectively Installed at the inlet and outlet ends of the pump body (1), the quick connector (43) has an annular sealing groove on its inner wall, and a sealing ring is provided in the annular sealing groove; wherein, the main groove (411) and auxiliary positioning groove (412) of the layered groove structure (41) are both arc-shaped and adapted to the shape of the infusion pipeline (11); the elastic sealing gasket (44) is made of medical grade silicone material with a thickness of 1-2mm and the anti-slip texture is annular interlaced texture; the quick connector (43) has 2-3 annular sealing grooves, and a sealing ring is provided in each annular sealing groove, and the sealing ring is made of fluororubber material; the quick connector (43) adopts a snap-fit ​​connection method combined with a sealing thread, which is convenient for quick disassembly and assembly and improves sealing reliability.

5. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, The auxiliary support assembly (5) includes a foldable support foot (51), a height adjustment screw (52), and an anti-slip base (53). The foldable support foot (51) is rotatably connected to the bottom of the pump body (1) via a hinge. The height adjustment screw (52) is threaded through the bottom of the foldable support foot (51). The anti-slip base (53) is fixed to the lower end of the height adjustment screw (52) and is made of medical anti-slip rubber.

6. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, The cam (311) of the pulse-type mechanical liquid pusher (31) adopts an eccentric cam (311) structure with an eccentricity of 2-5mm. Different eccentric cams (311) can be replaced. The liquid pusher piston (312) is made of medical-grade rubber material with a wear-resistant coating on the surface. The liquid pusher tube (314) is connected to the infusion line (11) through a sealing thread.

7. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, The foldable support feet (51) are provided in 3-4 units, evenly distributed at the bottom of the pump body (1), and are made of lightweight aluminum alloy. The foldable angle is 0-90°. The height adjustment screw (52) has an adjustment range of 10-30mm. The anti-slip base (53) has a diameter of 30-50mm and anti-slip protrusions on its surface.

8. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, The pump body (1) is made of medical-grade ABS material and the surface is treated with antibacterial agents. The side wall of the pump body (1) is provided with a non-slip handle that is easy to hold. The surface of the non-slip handle is provided with an arc-shaped groove. The inner wall of the mounting cavity (14) is provided with heat dissipation holes (141) and a dustproof net (142). The cover plate of the mounting cavity (14) adopts a detachable bolt fixing structure, which is convenient for inspection and maintenance.

9. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, The infusion line (11) is equipped with a spring-loaded mechanical check valve (111) near the patient end to prevent blood backflow; the operation panel (13) is equipped with an infusion speed adjustment key, a pulse frequency adjustment key, a mode switching key and an emergency stop key.

10. The infusion pump for preventing thrombosis and blockage according to claim 1, characterized in that, Each component of the mechanical antithrombotic mechanism (3) is detachable, making it easy to clean, disinfect, and maintain.

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