A pre-filled catheter flusher directional filling machine

Abstract

The present application relates to the technical field of filling equipment, in particular to a directional filling machine for pre-filled catheter flushers, comprising a filling rack, a filling assembly, a driving assembly and a pump injection assembly, the surface of the filling rack is provided with a conveying assembly, the driving assembly is fixed to the inner side of the filling rack for driving the lifting movement of the filling assembly and the oil pumping work of the pump injection assembly, in the present application, the shaft row swing synchronous linkage filling assembly and pump injection assembly system are adopted, a precise synchronization mechanism is adopted to ensure that each working part runs together under the coordinated action. This mechanism ensures that the liquid can enter the pre-filled catheter flusher with accurate flow, and during the filling process, the synchronous operation between the filling needle and the piston plate ensures the accurate injection of the liquid, avoids the situation of excessive or insufficient liquid, so as to ensure that the filling amount of each pre-filled catheter flusher is consistent, effectively improves the consistency of the product, and ensures the accuracy of the filling amount control.

Description

Technical Field

[0001] This invention relates to the field of filling equipment technology, specifically to a pre-filled conduit flushing directional filling machine. Background Technology

[0002] A pre-filled catheter flushing device is a medical device used to flush catheters. The solution inside the pre-filled catheter flushing device is a 0.9% sodium chloride solution, which has a wide range of applications, few limitations, and is compatible with the body's internal environment, minimizing its impact on the patient's condition and physiological indicators. The working principle of the pre-filled catheter flushing device is mainly based on the principle of liquid pressure transmission and jetting. During use, the flushing solution is injected into the catheter connector through a syringe, and then the connector sprays the flushing solution into the inside of the catheter, thereby achieving the cleaning and flushing effect.

[0003] Currently, pre-filled catheter flushing devices are mainly used in the medical industry for cleaning catheters. They typically introduce flushing fluid into the catheter via liquid injection. Traditional filling methods generally rely on a pump to inject liquid into a piston cylinder, then install the piston, and finally remove air bubbles through an venting process. This method usually involves multiple steps: first, pumping liquid into the piston cylinder; then installing the piston; and finally venting air bubbles to ensure accurate and consistent filling. This process typically involves multiple mechanical parts and cumbersome adjustment steps, making it complex and prone to liquid waste or air bubbles.

[0004] However, the existing filling methods have several obvious shortcomings:

[0005] 1. Operational complexity: Traditional methods require multiple manual or mechanical adjustments, and the liquid filling process is cumbersome and prone to errors.

[0006] 2. Liquid waste: Liquid is easily wasted due to excess or leakage in multiple operation steps, reducing the efficiency of liquid use.

[0007] 3. Air bubble problem: Air bubbles are easily generated during piston installation and venting. These air bubbles may affect the uniform injection of liquid, thus affecting the flushing effect and the accuracy of use.

[0008] 4. Inconsistent filling: Due to the complexity of the filling process, the amount of liquid filled may be inconsistent, affecting the consistency and quality of the product.

[0009] In view of this, we have studied and improved the existing problems and provided a pre-filled conduit flushing directional filling machine to solve the current problems. Summary of the Invention

[0010] This invention relates to a pre-filled catheter flushing device directional filling machine, aiming to solve the problems of complex filling operations, liquid waste, air bubble interference, and inconsistent filling volume in existing technologies. Through a precise synchronization mechanism and automated design, this equipment can achieve accurate liquid injection, ensure consistent filling volume, improve production efficiency, reduce human error, and thus improve product quality.

[0011] A pre-filled conduit flushing directional filling machine includes: a filling frame, a filling assembly, a drive assembly, and a pumping assembly. The surface of the filling frame is provided with a conveying assembly. The drive assembly is fixed to the inner side of the filling frame and is used to drive the lifting and lowering movement of the filling assembly and the oil pumping operation of the pumping assembly. The drive assembly includes a shaft frame, a motor, and an output shaft and a shaft row rotatably mounted on the surface of the shaft frame. One end of the output shaft is fixedly connected to the output end of the motor, and a crank wheel and a trigger plate are fixedly sleeved on the surface of the output shaft. A driving rod and a driven rod are respectively provided on both sides of the surface of the shaft row. An annular guide groove is opened on the surface of the crank wheel. A sliding pin sleeved on the inner side of the annular guide groove is provided on the surface of the driving rod. The driving rod is connected to the filling assembly.

[0012] Furthermore, the filling assembly includes a lifting rod that slides through the filling machine frame and several filling needles. A synchronization bar is fixedly connected to the top of the lifting rod, and several filling needles are evenly distributed on the surface of the synchronization bar. The bottom end of the filling needle is provided with a pressure plate head for pushing the piston inside the pre-filled conduit flusher to move downward. A filling hole is opened on the surface of the filling needle for filling into the pre-filled conduit flusher. The end of the drive rod is movably connected to the bottom end of the lifting rod.

[0013] Furthermore, a touch switch is fixedly installed on the surface of the filling frame, and the input end of the touch switch slides against the surface of the touch disk. During the rotation of the touch disk, the touch switch periodically contacts the touch switch, triggering an electrical signal to be transmitted to the controller. The controller judges the current filling rhythm based on its output and controls the feeding rhythm of the conveying component in real time, thereby forming an automatic closed-loop control logic.

[0014] Furthermore, the ring guide groove has a ring structure, and the center of the ring guide groove is offset from the center of the crank wheel. The outer periphery of the touch disk is similar to the outline of the ring guide groove.

[0015] Furthermore, the shaft row is rotatably mounted on the surface of the shaft frame, the driving rod and the driven rod are respectively arranged on opposite sides of the shaft row, and the shaft row swings periodically under the drive of the motor.

[0016] Furthermore, the conveying assembly includes a conveyor belt and a guide rail. The guide rail is fixed to the surface of the filling machine frame, and the conveyor belt is driven by a drive motor to move along the guide rail to realize the automatic conveying of the pre-filled catheter flusher.

[0017] Furthermore, the pumping assembly includes a plunger pump barrel, a moving rod, and a piston plate slidably sleeved inside the plunger pump barrel. The bottom end of the moving rod is provided with a moving connecting rod that is movably connected to the surface of the driven rod. The top end of the moving rod is fixedly connected to the bottom surface of the piston plate. The surface of the piston plate and the connection point between the inlet pipe and the plunger pump barrel are provided with two one-way valve plugs arranged in opposite directions. The bottom end of the plunger pump barrel is connected to a delivery pipeline for replenishing the flushing fluid. The top surface of the plunger pump barrel is connected to an inlet pipe, and the end of the inlet pipe is provided with a flexible conduit that communicates with each filling needle.

[0018] Furthermore, the top end of the moving link is rotatably connected to the bottom end of the moving rod, and the bottom end of the moving link is rotatably connected to the surface of the driven rod, and the connection point is adjustable.

[0019] Furthermore, the motor is a stepper motor or a servo motor to ensure the stability and controllability of the movement of the lifting rod and the moving rod.

[0020] This invention employs a precise synchronous control mechanism to ensure coordinated operation of the filling and pumping components. Liquid flows precisely into the pre-filled conduit flusher, and synchronous operation prevents overfilling or underfilling, thus guaranteeing consistent filling volume for each flusher. The synchronous operation of the plunger pump and filling needle in the pumping component ensures smoother liquid flow, prevents air bubble formation, guarantees injection accuracy, and reduces liquid waste. Furthermore, the automated design simplifies operation, reduces human error, and further improves production stability and efficiency.

[0021] This invention boasts significant technical advantages. First, its precise synchronization mechanism greatly improves the consistency of filling volume, preventing both excessive and insufficient liquid. Second, the pump assembly design avoids air bubble formation, reducing liquid waste and improving filling accuracy. Finally, the automated delivery and control system ensures high efficiency and precision in the production process, significantly improving production efficiency and reducing the complexity and error risk of manual operation.

[0022] Through these innovations, this invention not only effectively solves the problems in the prior art, but also improves the consistency of product quality and production efficiency, providing a more efficient and precise solution for the production of pre-filled catheter flushing devices.

[0023] The beneficial effects achieved by this invention are as follows:

[0024] 1. In this invention, the filling and pumping components are synchronously linked by a swing-type shaft, employing a precise synchronization mechanism to ensure that all working parts operate in a coordinated manner. This mechanism ensures that liquid enters the pre-filled conduit flusher at a precise flow rate, and during the filling process, the synchronous operation between the filling needle and the piston plate guarantees accurate liquid injection, avoiding over- or under-filling, thereby ensuring consistent filling volume for each pre-filled conduit flusher. This innovation effectively improves product consistency and ensures precise filling volume control.

[0025] 2. In this invention, the plunger pump barrel in the pumping assembly and the filling needle in the filling assembly work synchronously, making the liquid flow more stable and controllable. The pumping assembly can uniformly and stably deliver liquid into the pre-filled conduit flusher, avoiding the generation of air bubbles in the plunger pump barrel. This design not only ensures the accuracy of liquid filling but also avoids liquid waste and improves the efficiency of liquid use.

[0026] 3. In this invention, through the coordinated operation of the touch plate and the crank wheel, the touch plate can periodically contact the touch switch, achieving precise control of the movement of the drive component. This structure can accurately monitor the rotation period and oscillation position of the crank wheel, ensuring precise control of the operating state of the conveying component, thereby guaranteeing synchronization and accuracy during the filling process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the surface structure of a filling machine frame according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the filling assembly, driving assembly, and pumping assembly according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the drive component structure according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of a shaft row structure according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the crank wheel and actuator disk structure according to an embodiment of the present invention;

[0033] Figure 7 This is an enlarged schematic diagram of a filling needle and its partial structure according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of a pumping assembly according to an embodiment of the present invention.

[0035] Figure label:

[0036] 100. Filling frame; 110. Conveying assembly;

[0037] 200. Filling assembly; 210. Lifting rod; 220. Filling needle; 211. Synchronizing bar; 221. Pressure plate head; 222. Filling hole;

[0038] 300, Drive assembly; 310, Shaft bracket; 320, Motor; 330, Shaft row; 340, Crankwheel; 350, Actuating disc; 321, Output shaft; 331, Driving rod; 332, Driven rod; 341, Circular guide groove; 351, Actuating switch;

[0039] 400, Pump assembly; 410, Plunger pump barrel; 420, Moving rod; 430, Piston plate; 411, Inlet pipe; 421, Moving connecting rod; 431, One-way valve plug. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0041] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0042] The following is in conjunction with the appendix Figures 1 to 8 This invention describes a pre-filled conduit flushing device directional filling machine provided by some embodiments of the present invention.

[0043] The specific embodiments of the pre-filled catheter flushing device directional filling machine of the present invention will be described in detail with reference to the accompanying drawings, including the structural composition, function, and working principle of each component. The composition, function, and interoperability of the main parts of the present invention will be described in detail below.

[0044] The filling frame 100 serves as the supporting structure for the entire machine, bearing all key components, including the filling assembly 200, drive assembly 300, pump assembly 400, and conveying assembly 110. The conveying assembly 110 is fixed to the surface of the filling frame 100, used to carry and automatically convey the pre-filled conduit flusher to the designated position.

[0045] The filling assembly 200 is used to fill the pre-filled tubing flusher with liquid. It mainly consists of a lifting rod 210 that slides through the filling frame 100 and multiple filling needles 220. The lifting rod 210 is driven up and down by the drive assembly 300. During operation, the synchronization bar 211 at its top moves up and down accordingly, driving the multiple filling needles 220 into the pre-filled tubing flusher for liquid injection.

[0046] Each filling needle 220 is evenly distributed on the surface of the synchronization bar 211, and the bottom end of the filling needle 220 is equipped with a pressure plate head 221. The pressure plate head 221 pushes the piston inside the pre-filled tubing flusher downward to form a filling cavity, which facilitates liquid filling. The surface of the filling needle 220 is provided with a filling hole 222, through which liquid enters the interior of the pre-filled tubing flusher.

[0047] The drive assembly 300 provides the driving force for the filling assembly 200 and the pumping assembly 400, ensuring that the liquid can be accurately pumped to the pre-filled tubing flusher. The drive assembly 300 mainly consists of a shaft bracket 310, a motor 320, an output shaft 321, a rotating shaft array 330, a crank wheel 340, and an actuating plate 350.

[0048] Motor 320 drives crank wheel 340 to rotate via output shaft 321. The annular guide groove 341 on the surface of crank wheel 340 drives the driving rod 331 to move periodically, which in turn drives the driving rod 331 and driven rod 332 on shaft row 330 to swing back and forth, controlling the lifting rod 210 to move up and down. Touch plate 350 cooperates with touch switch 351 to control the working state of conveying assembly 110, ensuring accurate positioning and conveying of the conduit.

[0049] The pump assembly 400 is used to provide the pressure required for liquid filling of the pre-filled conduit flusher. The pump assembly 400 includes a plunger pump barrel 410, a moving rod 420, a piston plate 430, and a moving connecting rod 421.

[0050] The piston plate 430 inside the plunger pump barrel 410 moves up and down via the moving rod 420, and the one-way valve plug 431 allows liquid to enter the pump chamber under negative pressure. The liquid enters the plunger pump barrel 410 through the inlet pipe 411, and is then delivered to the filling needle 220 through the flexible conduit, finally entering the pre-filled conduit flusher. The stable movement of the pump assembly 400 ensures the accuracy and smoothness of the liquid delivery process.

[0051] The conveying assembly 110 is used to automate the conveying of the pre-filled tubing flusher. This assembly includes a conveyor belt and guide rails. The guide rails are fixed to the surface of the filling machine frame 100, and the conveyor belt is driven by a drive motor to move along the guide rails. Through this conveying assembly 110, the pre-filled tubing flusher can be automatically conveyed to the filling and filling positions along a predetermined path, ensuring a smooth and efficient production process.

[0052] The present invention is also equipped with a touch switch 351 and a controller. The touch switch 351 works in conjunction with the touch plate 350 to monitor the movement status of the motor 320 and the shaft row 330. The controller regulates the start and stop of the conveying assembly 110 according to the signal output by the touch switch 351 to ensure that each flusher can be accurately positioned for filling.

[0053] Working principle and usage process of this invention: This invention provides a pre-filled catheter flushing device directional filling machine, which is mainly used to achieve accurate filling of pre-filled catheter flushing devices. The working principle and usage process are described in detail below:

[0054] 1. Drive assembly 300 transmission principle: After the motor 320 starts, its output shaft 321 drives the crank wheel 340 to rotate synchronously. The annular guide groove 341 on its surface drives the shaft row 330 to deflect through the active rod 331. The active rod 331 and the driven rod 332 on the shaft row 330 swing back and forth accordingly.

[0055] The crank wheel 340 rotates synchronously, and the annular guide groove 341 on its surface drives the lifting rod 210 to reciprocate up and down through the drive rod 331.

[0056] The touch disk 350 periodically contacts the touch switch 351 when the crank wheel 340 rotates, in order to monitor the movement of the shaft row 330 and control the operating status of the conveyor assembly 110.

[0057] 2. Working process of filling component 200: The lifting rod 210 moves up and down under the drive of the drive component 300, which in turn drives the synchronous bar 211 on its top to move up and down as a whole.

[0058] The filling needle 220 rises and falls with the synchronization bar 211. When the filling needle 220 descends to the set position, its bottom end enters the inside of the flusher and uses the pressure plate head 221 to contact the piston of the pre-filled conduit flusher, causing the piston to move down to form a filling cavity.

[0059] At the same time, the pumping assembly 400 starts pumping liquid. The liquid enters the plunger pump cylinder 410 through the inlet pipe 411 and drives the piston plate 430 to reciprocate through the moving rod 420.

[0060] Under negative pressure, the liquid enters the pump chamber through the one-way valve plug 431 and is pumped to the flexible conduit when the piston plate 430 moves upward, and then enters the pre-filled conduit flusher through the filling hole 222.

[0061] 3. Liquid delivery and flow control: Through the linkage between the driven rod 332 and the moving connecting rod 421, the moving rod 420 is made to perform stable reciprocating motion, ensuring that the pumping process is carried out smoothly.

[0062] The flexible conduit connects the pump assembly 400 and the filling needle 220. Under the positive pressure of the pump, the liquid flows smoothly into the pre-filled conduit flusher, achieving precise filling.

[0063] Process equipment preparation: Connect the external delivery line and store the required flushing fluid in the liquid supply system. Place the pre-filled tubing flusher in the designated position on the delivery assembly 110 and ensure it is aligned with the filling needle 220.

[0064] Start the equipment: The control system is activated, triggering motor 320 to start and putting drive assembly 300 into operation. Touch panel 350, in conjunction with touch switch 351, controls the feeding and stopping of conveyor assembly 110, ensuring accurate filling for each flusher.

[0065] Filling process: After the equipment starts running, the lifting rod 210 drives the filling needle 220 downward, and the pressure plate head 221 presses the piston of the pre-filled conduit flusher, causing it to generate internal negative pressure. The pumping assembly 400 works synchronously. Driven by the piston plate 430, the liquid enters the pump chamber through the one-way valve plug 431, and then enters the pre-filled conduit flusher through the flexible conduit and the filling needle 220.

[0066] After filling is completed, the lifting rod 210 moves the filling needle 220 upward, releasing the piston and ensuring that the filling does not overflow.

[0067] Filling complete: Conveyor assembly 110 starts, transporting the filled pre-filled tubing flushers to the next process, while simultaneously moving new tubing flushers to the filling position. The equipment operates in a cycle until all pre-filled tubing flushers have been filled.

[0068] This invention utilizes the above principles to achieve efficient, precise, and automated pre-filled catheter flushing device filling, thereby improving production efficiency and reducing human error.

[0069] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pre-filled conduit flushing device directional filling machine, characterized in that, include: The filling machine includes a filling frame (100), a filling assembly (200), a drive assembly (300), and a pumping assembly (400). The surface of the filling frame (100) is provided with a conveying assembly (110). The drive assembly (300) is fixed to the inner side of the filling frame (100) and is used to drive the lifting and lowering movement of the filling assembly (200) and the pumping operation of the pumping assembly (400). The drive assembly (300) includes a shaft frame (310), a motor (320), and an output shaft (321) and a shaft row rotatably mounted on the surface of the shaft frame (310). 330), one end of the output shaft (321) is fixedly connected to the output end of the motor (320), and a crank wheel (340) and a touch plate (350) are fixedly sleeved on the surface of the output shaft (321). The two sides of the surface of the shaft row (330) are respectively provided with a driving rod (331) and a driven rod (332). The surface of the crank wheel (340) is provided with an annular guide groove (341). The surface of the driving rod (331) is provided with a sliding pin sleeved on the inner side of the annular guide groove (341). The driving rod (331) is connected to the filling assembly (200). The filling assembly (200) includes a lifting rod (210) that slides through the filling frame (100) and a plurality of filling needles (220). The top end of the lifting rod (210) is fixedly connected to a timing bar (211). The plurality of filling needles (220) are evenly distributed on the surface of the timing bar (211). The bottom end of the filling needle (220) is provided with a pressure plate head (221) for pushing the piston inside the pre-filled conduit flusher to move downward. The surface of the filling needle (220) is provided with a filling hole (222) for filling into the pre-filled conduit flusher. The end of the active rod (331) is movably connected to the bottom end of the lifting rod (210). The pumping assembly (400) includes a plunger pump barrel (410), a moving rod (420), and a piston plate (430) slidably sleeved inside the plunger pump barrel (410). The bottom end of the moving rod (420) is provided with a moving connecting rod (421) movably connected to the surface of the driven rod (332). The top end of the moving rod (420) is fixedly connected to the bottom surface of the piston plate (430). The surface of the piston plate (430) and the connection point between the inlet pipe (411) and the plunger pump barrel (410) are provided with two one-way valve plugs (431) arranged in opposite directions. The bottom end of the plunger pump barrel (410) is connected to a delivery pipeline for replenishing the flushing fluid. The top surface of the plunger pump barrel (410) is connected to the inlet pipe (411), and the end of the inlet pipe (411) is provided with a flexible conduit connected to each filling needle (220).

2. The pre-filled conduit flushing device directional filling machine according to claim 1, characterized in that, A touch switch (351) is fixedly installed on the surface of the filling frame (100), and the input end of the touch switch (351) slides against the surface of the touch disk (350). The touch disk (350) periodically contacts the touch switch during rotation, triggering an electrical signal to be transmitted to the controller. The controller judges the current filling rhythm based on its output and controls the feeding rhythm of the conveying component in real time, thereby forming an automatic closed-loop control logic.

3. The pre-filled conduit flushing device directional filling machine according to claim 1, characterized in that, The ring guide groove (341) has a ring structure, and the center of the ring guide groove (341) is offset from the center of the crank wheel (340). The outer periphery of the touch disk (350) is similar to the outline of the ring guide groove (341).

4. A pre-filled conduit flushing device directional filling machine according to claim 1, characterized in that, The shaft row (330) is rotatably mounted on the surface of the shaft frame (310), the driving rod (331) and the driven rod (332) are respectively arranged on opposite sides of the shaft row (330), and the shaft row (330) swings periodically under the drive of the motor (320).

5. A pre-filled conduit flushing device directional filling machine according to claim 1, characterized in that, The conveying assembly (110) includes a conveyor belt and a guide rail. The guide rail is fixed to the surface of the filling machine frame (100). The conveyor belt is driven by a drive motor to move along the guide rail to realize the automatic conveying of the pre-filled catheter flusher.

6. A pre-filled conduit flushing device directional filling machine according to claim 1, characterized in that, The motor (320) is a stepper motor or a servo motor to ensure the stability and controllability of the movement of the lifting rod (210) and the moving rod (420).

7. A pre-filled conduit flushing device directional filling machine according to claim 1, characterized in that, The top end of the moving link (421) is rotatably connected to the bottom end of the moving rod (420), and the bottom end of the moving link (421) is rotatably connected to the surface of the driven rod (332), and the connection point is adjustable.

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