A portable infusion pump with an automatic locking reservoir device

Abstract

This invention discloses a portable infusion pump with an automatic locking reservoir device, comprising a drive pump and a reservoir. The drive pump is located at the upper end of the reservoir, and a rotating shaft is provided between the drive pump and the reservoir. The drive pump is equipped with a display, an infusion monitor, and a controller. An automatic locking structure is provided on the side of the drive pump, and a control module is installed inside the drive pump. A medication dispensing module is installed inside the reservoir. A locking element is provided at the bottom of the drive pump near the front, and a hook is provided at the upper end of the reservoir near the front. This portable infusion pump with an automatic locking reservoir device solves the problem of medication leakage due to an unlocked state and also eliminates the possibility of accidental detachment of the reservoir. The reservoir can only be detached after unlocking, increasing safety, simplifying installation, and increasing the difficulty of unlocking and detaching the reservoir.

Description

Technical Field

[0001] This invention relates to the field of medical infusion, and in particular to a portable infusion pump with an automatic locking reservoir device. Background Technology

[0002] A portable infusion pump is a support device for automatically controlling the infusion flow rate. Portable infusion pumps are used for patients or postpartum women who experience pain due to various causes and require continuous, intermittent, or timed infusion of medication. They can also be used for chemotherapy administration in cancer patients. With the continuous development of technology, people have increasingly higher requirements for the manufacturing process of portable infusion pumps.

[0003] Existing portable infusion pumps have certain drawbacks in use. To install them, insert the reservoir hook into the reservoir pin on the drive unit, rotate and press down, insert the key into the lock, rotate clockwise until aligned with the locking mark, and gently twist and pull the reservoir to ensure it is securely installed. If it is not secure, use the key to rotate counterclockwise to the unlock mark, remove the reservoir, and reinstall it. In actual use, the following situations may occur: users or patients without proper training may accidentally touch the locking shaft; due to operability considerations, the original design includes a pre-locking spring, which can keep the reservoir installed even if the locking shaft is not fully tightened, but due to the lack of locking, leakage may occur. These issues may cause the reservoir to fall off or the herbal medicine to leak out. Therefore, we propose a portable infusion pump with an automatic reservoir locking device that ensures the reservoir is locked upon installation, and the unlocking operation allows the reservoir to fall off while simultaneously restoring the locking device to its original position. Summary of the Invention

[0004] Technical problem solved: In view of the shortcomings of the prior art, the present invention provides a portable infusion pump with an automatic locking reservoir device, which solves the problem of drug leakage caused by the unlocked state, and also solves the problem of accidental contact causing the reservoir to fall off. The reservoir can only be detached after unlocking, which increases safety, simplifies the installation steps, and increases the difficulty of unlocking and detaching the reservoir, thus effectively solving the problems in the background art.

[0005] Technical Solution: To achieve the above objectives, the present invention adopts the following technical solution: a portable infusion pump with an automatic locking reservoir device, comprising a drive pump and a reservoir. The drive pump is located at the upper end of the reservoir, and a rotating shaft is provided between the drive pump and the reservoir. The drive pump is equipped with a display, an infusion monitor, and a controller. An automatic locking structure is provided on the side of the drive pump. A control module is installed inside the drive pump, and a drug dosing module is installed inside the reservoir. A locking element is provided at the bottom of the drive pump near the front, and a hook is provided at the upper end of the reservoir near the front, corresponding to the position of the locking element. A peristaltic elastic tube is connected to the reservoir, and a discharge shut-off valve is provided on the peristaltic elastic tube. An injector is connected to the end of the peristaltic elastic tube, and a lock key is inserted into the automatic locking structure.

[0006] As a preferred technical solution of this application, a peristaltic motor frame is installed inside the drive pump at the position of the automatic locking structure. A first lock fixing frame, a lock hook fixing shaft, a lock spring, a second lock fixing frame, a lock shaft, a rubber plug, and a lock hook are installed on the peristaltic motor frame at the position of the locking component. The lock shaft and the rubber plug are located at the position of the automatic locking structure. The first lock fixing frame is located on the side of the lock hook. The lock hook fixing shaft is located at the upper part of the lock hook. The second lock fixing frame is located inside the lock shaft. The lock spring is connected to the bottom position of the lock hook, and the bottom of the lock hook corresponds to the position of the hook.

[0007] As a preferred technical solution of this application, the drive pump and the liquid storage box are rotatably connected by a rotating shaft, and the front end of the drive pump and the liquid storage box are engaged and positioned by a locking device and a hook.

[0008] As a preferred technical solution of this application, the lock and the hook are locked and unlocked by an automatic locking structure.

[0009] As a preferred technical solution of this application, the drive pump, the liquid storage box and the peristaltic elastic tube are connected in a continuous manner, the liquid outlet shut-off valve controls the flow rate of the peristaltic elastic tube, and the peristaltic elastic tube is connected in a continuous manner with the ejector.

[0010] As a preferred technical solution of this application, in the initial state, the locking spring maintains a preload force against the locking hook, and the hook overcomes the preload force by squeezing into the plane of the locking hook through the inclined surface of the locking hook.

[0011] As a preferred technical solution of this application, the hook is pressed into the position of the locking hook, forcing the locking hook to rotate around the position of the locking hook fixing axis, and the pressure of the locking spring increases.

[0012] As a preferred technical solution of this application, the hook is fully inserted into the groove of the lock hook, the lock hook and the lock spring are returned to their positions, and the lock spring is held in place by the pre-tightening force so as not to rebound, thereby playing a fixing role.

[0013] Beneficial Effects: Compared with existing technologies, this invention provides a portable infusion pump with an automatic locking reservoir device, which has the following beneficial effects: This portable infusion pump with an automatic locking reservoir device solves the problem of drug leakage caused by an unlocked state, and also solves the problem of accidental dislodgement of the reservoir. The reservoir can only be detached after unlocking, increasing safety, simplifying installation, and increasing the difficulty of unlocking and detaching the reservoir. When used with a disposable reservoir, the drug delivery route is intravenous or epidural. The product allows the user to set the infusion mode and rate. For different infusion modes and rates, the microcontroller sends different drive pulse frequencies, which drive the motor circuit to rotate the motor. The gear fixed to the motor drives the gear fixed to the camshaft to rotate, thereby driving the camshaft to rotate. The cam on the camshaft sequentially drives the inlet shut-off valve, the ejector, and the outlet shut-off valve to move up and down, squeezing the peristaltic elastic tube of the reservoir in three steps: shut-off, liquid ejection, and shut-off. By designing the dimensions of the infusion tubing, the shut-off valve, and the size and relative position of the ejector, the infusion volume per revolution of the camshaft can be precisely controlled. By controlling the motor speed per unit time, precise infusion in different modes and rates can be achieved. The entire portable infusion pump has a simple structure, is easy to operate, and has better performance than traditional methods. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a portable infusion pump with an automatic locking reservoir device according to the present invention.

[0015] Figure 2 This is a schematic diagram of the drive pump in a portable infusion pump with an automatic locking reservoir device according to the present invention.

[0016] Figure 3 This is a schematic diagram of the drive pump in a portable infusion pump with an automatic locking reservoir device according to the present invention.

[0017] Figure 4 This is a schematic diagram of the drive pump 3 in a portable infusion pump with an automatic locking reservoir device according to the present invention.

[0018] Figure 5 This is a schematic diagram of the internal lock core in a portable infusion pump with an automatic locking reservoir box device according to the present invention.

[0019] Figure 6This is a structural schematic diagram of point A in a portable infusion pump with an automatic locking reservoir device according to the present invention.

[0020] In the diagram: 1. Drive pump; 2. Liquid reservoir; 3. Display; 4. Infusion monitor; 5. Controller; 6. Automatic locking structure; 7. Lock; 8. Control module; 9. Hook; 10. Peristaltic elastic tube; 11. Rotary shaft; 12. Dosing module; 13. Discharge shut-off valve; 14. Injector; 15. Lock key; 16. Peristaltic frame; 17. First lock fixing frame; 18. Lock hook fixing shaft; 19. Lock spring; 20. Second lock fixing frame; 21. Lock shaft; 22. Rubber stopper; 23. Lock hook. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are some embodiments of the present invention, but not all embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. 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. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0022] 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.

[0023] In the description of this invention, it should be noted that, 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 this invention based on the specific circumstances.

[0024] like Figure 1-6As shown, a portable infusion pump with an automatic locking reservoir cassette includes a drive pump 1 and a reservoir 2. The drive pump 1 is located at the upper end of the reservoir 2. A rotating shaft 11 is provided between the drive pump 1 and the reservoir 2. A display 3, an infusion monitor 4, and a controller 5 are mounted on the drive pump 1. An automatic locking structure 6 is provided on the side of the drive pump 1. A control module 8 is installed inside the drive pump 1. A drug delivery module 12 is installed inside the reservoir 2. A locking element 7 is provided at the bottom of the drive pump 1 near the front. A locking element 7 is provided at the upper end of the reservoir 2 near the front. A hook 9 is provided, corresponding to the position of the lock 7. A peristaltic elastic tube 10 is connected to the liquid storage box 2, and a liquid outlet shut-off valve 13 is provided on the peristaltic elastic tube 10. An injector 14 is connected to the end of the peristaltic elastic tube 10. A lock key 15 is inserted into the position of the automatic locking structure 6. This solves the problem of liquid leakage caused by the possible unlocked state, and also solves the problem of accidental contact causing the medicine box to fall off. The liquid storage box can only be removed after unlocking, which increases safety, simplifies the installation steps, and increases the difficulty of unlocking and removing the liquid storage box.

[0025] Furthermore, a peristaltic motor frame 16 is installed inside the drive pump 1 at the position of the automatic locking structure 6. On the peristaltic motor frame 16 at the position of the locking component 7, a first lock fixing frame 17, a lock hook fixing shaft 18, a lock spring 19, a second lock fixing frame 20, a lock shaft 21, a rubber plug 22, and a lock hook 23 are installed. The lock shaft 21 and the rubber plug 22 are located at the position of the automatic locking structure 6. The first lock fixing frame 17 is located on the side of the lock hook 23. The lock hook fixing shaft 18 is located inside the upper part of the lock hook 23. The second lock fixing frame 20 is located inside the lock shaft 21. The lock spring 19 is connected to the bottom position of the lock hook 23. The bottom of the lock hook 23 corresponds to the position of the hook 9.

[0026] Furthermore, the drive pump 1 and the liquid storage box 2 are rotatably connected by a rotating shaft 11, and the front end positions of the drive pump 1 and the liquid storage box 2 are engaged and positioned by a locking component 7 and a hook 9.

[0027] Furthermore, the lock 7 and the hook 9 are locked and unlocked by the position of the automatic locking structure 6.

[0028] Furthermore, the drive pump 1, the liquid storage box 2 and the peristaltic elastic tube 10 are connected in a continuous manner, the liquid outlet shut-off valve 13 controls the flow rate of the peristaltic elastic tube 10, and the peristaltic elastic tube 10 is connected in a continuous manner with the ejector 14.

[0029] Furthermore, in the initial state, the locking spring 19 maintains a preload force against the locking hook 23, and the hook 9 overcomes the preload force and is squeezed into the plane of the locking hook 23 through the inclined surface of the locking hook 23.

[0030] Furthermore, the hook 9 is pushed into the position of the locking hook 23, forcing the locking hook 23 to rotate around the position of the locking hook fixing axis 18, and the pressure of the locking spring 19 increases.

[0031] Furthermore, the hook 9 is fully inserted into the groove of the locking hook 23, the locking hook 23 and the locking spring 19 return to their positions, and the locking spring 19, through the preload, prevents the locking hook 23 from rebounding, thus playing a fixing role.

[0032] Working principle: This invention includes a drive pump 1, a storage box 2, a display 3, an infusion monitor 4, a controller 5, an automatic locking structure 6, a lock 7, a control module 8, a hook 9, a peristaltic elastic tube 10, a rotating shaft 11, a dosing module 12, a dispensing shut-off valve 13, an injector 14, a lock key 15, a peristaltic frame 16, a first lock fixing frame 17, a lock hook fixing shaft 18, a lock spring 19, a second lock fixing frame 20, a lock shaft 21, a rubber stopper 22, and a lock hook 23. It solves the problem of medicine leakage caused by the possibility of not being locked, and also solves the problem of the medicine box falling off due to accidental contact. The storage box can only be detached after unlocking, which increases safety, simplifies the installation steps, and increases the difficulty of unlocking and detaching the storage box.

[0033] In the initial state, the spring maintains preload against the hook, and the reservoir hook overcomes the preload by squeezing into the hook plane through the hook's inclined surface. As the hook engages the hook, it forces the hook to rotate around its fixed axis, increasing the spring's compressive force. Once the hook is fully engaged in the hook groove, the hook and spring return to their original positions. The spring, under preload, cannot rebound while holding the hook in place, thus securing the reservoir. At this point, the reservoir lock is stable, preventing any loosening or leakage. The rubber stopper must be removed before unlocking; this step prevents accidental activation or misoperation during use. After use, a special key is required for unlocking. The key connector is unique to ensure the correct key is used for unlocking, reducing the risk of misuse. Rotating the key counterclockwise to the limit position and pulling down the reservoir compresses the spring, allowing the hook to disengage from the hook through the inclined surface. Once the hook is fully disengaged, the hook returns to its limit position, and the lock shaft returns to its original position.

[0034] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A portable infusion pump with an automatic locking reservoir device, comprising a drive pump (1) and a reservoir (2), characterized in that: The drive pump (1) is located at the upper end of the reservoir (2). A rotating shaft (11) is provided between the drive pump (1) and the reservoir (2). A display (3), an infusion monitor (4), and a controller (5) are installed on the drive pump (1). An automatic locking structure (6) is provided on the side of the drive pump (1). A control module (8) is installed inside the drive pump (1). A dosing module (12) is installed inside the reservoir (2). A lock (7) is provided at the bottom of the drive pump (1) near the front. A hook (9) is provided at the upper end of the reservoir (2) near the front. The hook (9) corresponds to the position of the lock (7). A peristaltic elastic tube (10) is connected to the reservoir (2). A liquid outlet stop valve (13) is provided on the peristaltic elastic tube (10). An injector (14) is connected to the end of the peristaltic elastic tube (10). A lock key (15) is inserted into the position of the automatic locking structure (6). The drive pump (1) is equipped with a peristaltic frame (16) located in the position of the automatic locking structure (6). The peristaltic frame (16) is equipped with a first lock fixing frame (17), a lock hook fixing shaft (18), a lock spring (19), a second lock fixing frame (20), a lock shaft (21), a rubber plug (22), and a lock hook (23) located in the position of the lock (7). The lock shaft (21) and the rubber plug (22) are located in the position of the automatic locking structure (6). The first lock fixing frame (17) is located on the side of the lock hook (23). The lock hook fixing shaft (18) is located in the upper part of the lock hook (23). The second lock fixing frame (20) is located inside the lock shaft (21). The lock spring (19) is connected to the bottom position of the lock hook (23). The bottom of the lock hook (23) corresponds to the position of the hook (9). The drive pump (1) and the liquid storage box (2) are rotated and moved by a rotating shaft (11), and the front end of the drive pump (1) and the liquid storage box (2) are engaged and positioned by a lock (7) and a hook (9); In the initial state, the lock spring (19) maintains the preload force against the lock hook (23), and the hook (9) overcomes the preload force by squeezing into the plane of the lock hook (23) through the inclined surface of the lock hook (23); The hook (9) is pushed into the position of the lock hook (23), forcing the lock hook (23) to rotate around the position of the lock hook fixing axis (18), and the pressure of the lock spring (19) increases; The hook (9) is fully inserted into the groove of the lock hook (23), the lock hook (23) and the lock spring (19) are returned to their positions, and the lock spring (19) is held in place by the pre-tightening force against the lock hook (23) so that it cannot bounce back, thereby playing a fixing role.

2. A portable infusion pump with an automatic locking reservoir as described in claim 1, characterized in that: The drive pump (1), the liquid storage box (2) and the peristaltic elastic tube (10) are connected in a continuous manner. The liquid outlet shut-off valve (13) controls the flow rate of the peristaltic elastic tube (10). The peristaltic elastic tube (10) and the ejector (14) are connected in a continuous manner.

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