Free falling prevention device for infusion pump and use method

Abstract

The invention discloses a free falling prevention device for an infusion pump and a using method, and relates to the technical field of infusion pumps, the free falling prevention device comprises a main rod and an infusion pump main body, the bottom end of the infusion pump main body is fixedly connected with a connecting seat, one side of the connecting seat is fixedly connected with a clamping block, and the outer side of the main rod is embedded into the clamping block; the front end of the clamping block is movably connected with a limiting rotary knob through threads, the connecting end of the limiting rotary knob penetrates through the clamping block and makes contact with the outer side of the main rod, the bottom end of the main rod is fixedly connected with a base, and the base is in a circular truncated cone shape. The infusion height can be flexibly adjusted according to use requirements, meanwhile, the stability of equipment is ensured, and the situation that the equipment falls from a high place due to the fact that the state of a limiting rotary knob is relieved or a limiting position slides is avoided; the moving wheels are stably separated from the ground, so that the device is converted into a fixed state from a moving state.

Description

Technical Field

[0001] This invention relates to the field of infusion pump technology, specifically to an anti-free fall device for infusion pumps and its usage method. Background Technology

[0002] Infusion pumps are important equipment in modern medical care, mainly used to precisely control the rate and dosage of intravenous infusion. They are widely used in intensive care units, operating rooms, and general wards. Traditional infusion pumps are usually placed directly on infusion stands or fixed on mobile carts, lacking effective measures to prevent falls and tipping.

[0003] Referring to Chinese invention patent publication number CN215716591U, entitled "An Infusion Pump Support," the invention comprises: a base frame; an infusion pump frame; multiple limiting crossbars disposed on the base frame, with their front and rear ends respectively providing protection against the infusion pump detaching from the infusion pump frame; several infusion pump placement plates movably disposed within the infusion pump frame, with their left and right ends respectively providing protection against the infusion pump detaching from the infusion pump frame; and a locking mechanism disposed between the infusion pump frame and the infusion pump placement plates, used to lock the relative positional relationship between the infusion pump frame and the infusion pump placement plates. By moving the positions of the infusion pump placement plates, spaces for placing the infusion pump are created within the infusion pump frame. Then, the locking mechanism locks the positions of the infusion pump placement plates, placing the infusion pump in the corresponding space within the infusion pump frame. This design facilitates installation and, through the cooperation of the limiting crossbars and limiting crossbars, prevents the infusion pump from detaching from the infusion pump frame during use, ensuring high safety.

[0004] However, some problems still exist in actual use: Existing infusion pumps lack height locking functionality, making them prone to accidental falls during adjustment. Furthermore, mobile infusion carts have insufficient anti-tipping capabilities, easily tipping over upon impact or on uneven ground. Moreover, the switching between moving and stationary states of existing equipment largely relies on manual operation, increasing the workload of medical staff. These problems not only affect the accuracy of infusion therapy but may also lead to medical accidents and drug waste. Therefore, there is an urgent need to develop a new infusion pump fixing device with automatic anti-fall and intelligent anti-tipping functions. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing infusion pumps, such as the lack of a height locking function, which makes them prone to accidental falls during adjustment; insufficient anti-tipping performance of mobile infusion carts, which easily tip over upon collision or on uneven ground; and the fact that the switching between moving and stationary states of existing equipment largely relies on manual operation, increasing the workload of medical staff. These problems not only affect the accuracy of infusion therapy but may also lead to medical accidents and drug waste.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an anti-free fall device for an infusion pump, comprising a main rod and an infusion pump body. A connecting seat is fixedly connected to the bottom end of the infusion pump body, and a locking block is fixedly connected to one side of the connecting seat. The outer side of the main rod is embedded in the interior of the locking block. A limit knob is movably connected to the front end of the locking block via a thread, and the connecting end of the limit knob passes through the locking block and contacts the outer side of the main rod. A base is fixedly connected to the bottom end of the main rod, and the base is frustum-shaped. An extension seat is fixedly connected to the outer side of the base, and a protective cover is fixedly connected to the top end of the extension seat. A groove is formed at the bottom of the base, and a state switching mechanism is movably connected inside the groove. An anti-tipping mechanism is movably connected inside the state switching mechanism. An anti-fall height adjustment mechanism is provided inside the protective cover, and the output end of the anti-fall height adjustment mechanism is fixedly connected to the top end of the infusion pump body. A heat dissipation grille is fixedly connected to one side of the protective cover.

[0007] Furthermore, the state switching mechanism includes a control motor, a control lever, an adjustment wheel, an adjustment seat, and a limit groove. The adjustment wheel is elliptical and symmetrically fixed to the outside of the control lever. There are two adjustment wheels in a T-shape. The limit grooves are arc-shaped and fixedly connected to the top of the adjustment seat. The adjustment wheels are located directly below the control wheels. The outside of the adjustment wheels is attached to the inside of the limit grooves. One end of the control lever is fixedly connected to the output end of the control motor via a coupling.

[0008] Furthermore, the control rod, adjustment wheel, adjustment seat, and limit groove are all located inside the groove, and both ends of the control rod are movably connected to the inner wall of the groove through bearings. One end of the control rod passes through the base and extends to the top of the extension seat, and the control motor is fixedly connected to the surface of the extension seat.

[0009] Furthermore, the state switching mechanism also includes a transmission rod, a moving wheel, a connecting frame, a hydraulic rod, and a return spring. There are two transmission rods, and the moving wheels are movably connected to both ends of the transmission rods. There are two connecting frames arranged symmetrically. The two ends of the connecting frames are movably connected to the outside of the two transmission rods through bearings. The telescopic ends of the hydraulic rods are fixedly connected to the middle position of the connecting frames, and the return springs are respectively sleeved on the outside of the hydraulic rods.

[0010] Furthermore, the bottoms of the two adjusting seats are respectively movably connected to the middle position of the transmission rod via bearings, the end of the hydraulic rod away from the connecting frame is fixedly connected to the inside of the groove, one end of the return spring is fixedly connected to the surface of the connecting frame, and the other end of the return spring is fixedly connected to the inside of the groove.

[0011] Furthermore, the anti-tipping mechanism includes a drive block, an adsorption plate, a connecting rod, and a collar. The drive block is elliptical, the adsorption plate is frustoconical, and the adsorption plate is located directly below the drive block. The connecting rods are symmetrically arranged and one end is fixedly connected to the outside of the adsorption plate. The collars are fixedly connected to the other end of the connecting rods.

[0012] Furthermore, the collars are respectively sleeved on the outside of the transmission rod, the drive block is fixedly connected to the middle position of the transmission rod at the shaft center, and the drive block and the control wheel are arranged in opposite planes and perpendicular to each other.

[0013] Furthermore, the fall arrest height adjustment mechanism includes a drive motor, a support frame, a winding roller, a cable, a guide wheel, and a mounting frame. The winding roller is movably connected to the inside of the support frame via a rotating shaft. The drive motor is fixedly connected to the outside of the support frame, and the output end of the drive motor is fixedly connected to one end of the winding roller through the support frame via a coupling. One end of the cable is wound around the outside of the winding roller, and the guide wheel is movably connected to the inside of the top of the mounting frame.

[0014] Furthermore, the support frame is fixedly connected to the surface of the extension seat, and the drive motor, support frame and winding roller are all located inside the protective cover. The mounting frame is fixedly connected to the top of the main rod, and the guide wheel is located directly above the main rod. Hooks are fixedly connected to both sides of the mounting frame. The end of the cable (904) away from the winding roller passes through the protective cover, slides through the guide wheel hub, and is fixedly connected to the top of the infusion pump body.

[0015] A method of using a fall protection device for an infusion pump includes the following steps: S1. The main rod pushes the equipment, at which point the moving wheel drives the equipment to the working area. Then, the control motor is started to drive the control rod to rotate. Subsequently, the control wheel is driven to rotate along its trajectory. During this process, the most convex position of the control wheel slowly slides out from the inside of the limit groove. Then, the return spring and hydraulic rod react on the connecting frame, pulling the connecting frame upward with the rotation amplitude of the control wheel until the convex surface of the control wheel is parallel to the ground. The guide wheel falls off the ground and moves into the inside of the groove. S2. As the control lever rotates, it drives the drive block to rotate. As the drive block rotates, its outer side slowly squeezes the adsorption plate downward, causing the air inside to be discharged outward. When the protruding surface of the control wheel is parallel to the ground, the protruding surface of the drive block is perpendicular to the ground. At this time, the adsorption plate is compressed to the lowest position by the drive block. Then, the bottom of the adsorption plate is tightly attached to the ground. S3. When it is necessary to adjust the height of the infusion pump body, start the drive motor to drive the winding roller to rotate. At the same time, the winding roller winds and tightens the cable. Then, the other end of the cable pulls the infusion pump body to slide on the outside of the main rod through the locking block. Meanwhile, the middle part of the cable slides smoothly inside the hub of the guide wheel. S4. After adjusting the height of the infusion pump body to a suitable position, turn off the drive motor. At this time, the cable will be taut and remain stationary. Then, rotate the limit knob to pass the connecting end through the locking block and hold it against the main rod. Finally, hang the medicine bottle inside the hook.

[0016] Compared with the prior art, the new anti-free fall device for infusion pumps and its usage method have the following advantages: I. The sliding connection structure between the main rod and the body of the infusion pump of this invention, together with the cable system of the anti-fall height adjustment mechanism, can flexibly adjust the infusion height according to the usage requirements, while ensuring the stability of the equipment and preventing the limit knob from being released or sliding at the limit point, which could cause the equipment to fall from a height. The state switching mechanism drives the elliptical adjustment wheel to rotate through the control motor, and with the buffering effect of the hydraulic rod and the return spring, it realizes the smooth separation of the moving wheel from the ground, so that the device can be changed from a moving state to a fixed state.

[0017] Second, this invention achieves precise adjustment and locking of the infusion pump height through the coordinated work of the drive motor, winding roller and cable. The design of the guide wheel and hook optimizes the layout of the infusion pipeline, avoiding pipeline entanglement or excessive stretching. The protective cover not only protects the internal mechanism, but its heat dissipation grille also ensures the stability of the equipment during long-term operation. It realizes the automation of state transition, is simple and reliable to operate, and greatly reduces the workload of medical staff.

[0018] Third, the present invention enables the device to be both flexibly moved and stably fixed through the switching mechanism of the moving wheels and the adsorption gas plate. The height adjustment function adapts to the needs of different beds and patients, and the limit knob provides double protection. In addition, the adsorption gas plate forms negative pressure adsorption under the action of the drive block, which provides additional stability protection for the device and effectively prevents possible tipping accidents during infusion. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention; Figure 3 This is a partial cross-sectional view of the connection structure of the protective cover of the present invention; Figure 4 This is a schematic diagram of a partial cross-sectional connection structure of the base of the present invention; Figure 5 This is a schematic diagram of the state switching mechanism of the present invention; Figure 6 This is a schematic diagram of a partial connection structure of the fall protection height adjustment mechanism of the present invention; Figure 7 For the present invention Figure 4 Enlarged connection structure diagram at point A; Figure 8 For the present invention Figure 5 Enlarged schematic diagram of the connection structure at point B.

[0020] In the diagram: 1. Main rod; 2. Infusion pump body; 3. Locking block; 4. Limit knob; 5. Base; 6. Groove; 7. State switching mechanism; 701. Control motor; 702. Control rod; 703. Adjustment wheel; 704. Adjustment seat; 705. Limit groove; 706. Transmission rod; 707. Moving wheel; 708. Connecting frame; 709. Hydraulic rod; 710. Return spring; 8. Anti-tipping mechanism; 801. Drive block; 802. Adsorption air plate; 803. Connecting rod; 804. Collar; 9. Anti-fall height adjustment mechanism; 901. Drive motor; 902. Support frame; 903. Winding roller; 904. Cable; 905. Guide wheel; 906. Mounting frame; 10. Extension seat; 11. Protective cover; 12. Heat dissipation grille; 13. Hook. Detailed Implementation

[0021] The technical solutions of the embodiments 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, and 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.

[0022] like Figure 1-8 As shown, the present invention provides a technical solution: an anti-free fall device for an infusion pump, comprising a main rod 1 and an infusion pump body 2. A connecting seat is fixedly connected to the bottom end of the infusion pump body 2, and a locking block 3 is fixedly connected to one side of the connecting seat. The outer side of the main rod 1 is embedded in the interior of the locking block 3. The front end of the locking block 3 is movably connected to a limit knob 4 via a thread, and the connecting end of the limit knob 4 passes through the locking block 3 and contacts the outer side of the main rod 1. A base 5 is fixedly connected to the bottom end of the main rod 1, and the base 5 is frustoconical. An extension seat 10 is fixedly connected to the outer side of the base 5, and a protective cover 11 is fixedly connected to the top end of the extension seat 10. A groove 6 is provided at the bottom of the base 5, and a state switching mechanism 7 is movably connected inside the groove 6. An anti-tipping mechanism 8 is movably connected inside the state switching mechanism 7. An anti-fall height adjustment mechanism 9 is provided inside the protective cover 11, and the output end of the anti-fall height adjustment mechanism 9 is fixedly connected to the top end of the infusion pump body 2. A heat dissipation grille 12 is fixedly connected to one side of the protective cover 11.

[0023] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, the state switching mechanism 7 includes a control motor 701, a control lever 702, an adjustment wheel 703, an adjustment seat 704, and a limiting groove 705. The adjustment wheel 703 is elliptical and is symmetrically fixedly connected to the outside of the control lever 702. There are two adjustment wheels 703 in a T-shape. The limiting groove 705 is arc-shaped and is fixedly connected to the top of the adjustment seat 704. The adjustment wheels 703 are located directly below the control wheels. The outside of the adjustment wheels 703 is attached to the inside of the limiting groove 705. One end of the control lever 702 is fixedly connected to the output end of the control motor 701 through a coupling. The control lever 702, the adjustment wheel 703, the adjustment seat 704, and the limiting groove 705 are all located inside the groove 6. Both ends of the control lever 702 are movably connected to the inner wall of the groove 6 through bearings. One end of the control lever 702 passes through the base 5 and extends to the top of the extension seat 10. The control motor 701 is fixedly connected to the surface of the extension seat 10.

[0024] Through the precise cooperation between the elliptical regulating wheel 703 and the arc-shaped limiting groove 705, when the control motor 701 drives the control rod 702 to rotate, the regulating wheel 703 moves along a specific trajectory within the limiting groove 705. The T-shaped arrangement of the double regulating wheels 703 ensures balanced force distribution and avoids the off-center load problem that may occur with single-point control. The arc-shaped contour of the limiting groove 705 provides precise motion guidance for the regulating wheel 703, making the state switching process smoother and more reliable. The through-type control rod 702 design achieves high efficiency in power transmission, while the bearing support structure ensures long-term operational stability. Furthermore, through the eccentric motion characteristics of the regulating wheel 703, precise lifting control of the moving wheel 707 is achieved, creating the necessary conditions for the subsequent operation of the anti-tipping mechanism 8. This state switching mechanism not only has a fast response speed and accurate positioning, but also completely avoids the leakage risk present in traditional hydraulic or pneumatic systems, significantly improving the reliability and service life of the equipment.

[0025] The state switching mechanism 7 also includes a transmission rod 706, a moving wheel 707, a connecting frame 708, a hydraulic rod 709, and a return spring 710. There are two transmission rods 706, and the moving wheels 707 are movably connected to both ends of the transmission rods 706. There are two connecting frames 708, which are symmetrically arranged. The two ends of the connecting frames 708 are movably connected to the outside of the two transmission rods 706 through bearings. The telescopic ends of the hydraulic rods 709 are fixedly connected to the middle position of the connecting frames 708, and the return springs 710 are respectively sleeved on the outside of the hydraulic rods 709. The bottoms of the two adjusting seats 704 are movably connected to the middle position of the transmission rods 706 through bearings. The ends of the hydraulic rods 709 away from the connecting frames 708 are fixedly connected to the inside of the groove 6. One end of the return spring 710 is fixedly connected to the surface of the connecting frame 708, and the other end of the return spring 710 is fixedly connected to the inside of the groove 6.

[0026] A stable parallelogram linkage structure is formed by the dual transmission rods 706 and the symmetrically arranged connecting frame 708. When the regulating wheel 703 pushes the adjusting seat 704, the two transmission rods 706 can synchronously drive the moving wheels 707 to rise and fall, ensuring that the equipment lands or leaves the ground smoothly. The composite design of the hydraulic rod 709 and the return spring 710 provides double buffer protection. The hydraulic rod 709 effectively absorbs impact energy and prevents the mechanism from overloading, while the return spring 710 ensures that the mechanism can quickly return to its initial position. Secondly, the transmission rods 706 significantly reduce motion friction and extend service life. The design of the dual moving wheels 707 improves the stability of the equipment movement. The intermediate connection between the adjusting seat 704 and the transmission rods 706 optimizes the force transmission path, making the lifting action more stable and reliable. It realizes the efficient conversion from motor drive to wheel assembly action, providing a reliable function for switching between mobile and fixed states for the entire anti-fall device, greatly improving the safety and convenience of using the infusion pump.

[0027] like Figure 2 , Figure 5 , Figure 7 and Figure 8 As shown, the anti-tipping mechanism 8 includes a drive block 801, an adsorption plate 802, a connecting rod 803, and a collar 804. The drive block 801 is elliptical, the adsorption plate 802 is frustoconical, and the adsorption plate 802 is located directly below the drive block 801. The connecting rods 803 are symmetrically arranged and one end is fixedly connected to the outside of the adsorption plate 802. The collars 804 are fixedly connected to the other end of the connecting rods 803 respectively. The collars 804 are respectively sleeved on the outside of the transmission rod 706. The drive block 801 is fixedly connected to the middle position of the transmission rod 706 at its axis, and the drive block 801 and the control wheel 703 are arranged in opposite planes and perpendicular to each other.

[0028] Through the synergistic action of the elliptical drive block 801 and the frustum-shaped adsorption plate 802, when the transmission rod 706 rotates and drives the drive block 801 to rotate, the cam characteristic of its elliptical shape will periodically press down on the adsorption plate 802, generating a strong negative pressure adsorption force. The symmetrically arranged connecting rod 803 and collar 804 ensure the vertical movement trajectory of the adsorption plate 802, avoiding adsorption failure caused by skewness. The opposite-plane vertical arrangement of the drive block 801 and the regulating wheel 703 realizes spatial motion decoupling, so that state switching and anti-tipping function do not interfere with each other. The unique shape of the frustum-shaped adsorption plate 802 increases the grounding area and facilitates rapid air discharge, realizing complete mechanical transmission drive without the need for an additional air pump or vacuum device. It converts rotational motion into stable adsorption force, which not only ensures reliability but also reduces energy consumption. It can keep the infusion pump stable under various ground conditions and effectively prevent tipping accidents caused by collision or shaking, providing an important guarantee for medical infusion safety.

[0029] like Figure 1 , Figure 2, Figure 3 , Figure 4 and Figure 6 As shown, the fall arrestor height adjustment mechanism 9 includes a drive motor 901, a support frame 902, a winding roller 903, a cable 904, a guide wheel 905, and a mounting frame 906. The winding roller 903 is movably connected to the inside of the support frame 902 via a rotating shaft. The drive motor 901 is fixedly connected to the outside of the support frame 902, and the output end of the drive motor 901 is fixedly connected to one end of the winding roller 903 via a coupling through the support frame 902. One end of the cable 904 is wound around the outside of the winding roller 903, and the guide wheel 905 is movably connected to... The support frame 902 is fixedly connected to the surface of the extension seat 10 and is attached to the top of the mounting bracket 906. The drive motor 901, the support frame 902 and the winding roller 903 are all located inside the protective cover 11. The mounting bracket 906 is fixedly connected to the top of the main rod 1 and the guide wheel 905 is located directly above the main rod 1. Hooks 13 are fixedly connected to both sides of the mounting bracket 906. The end of the cable 904 away from the winding roller 903 passes through the protective cover 11, slides through the hub of the guide wheel 905 and is fixedly connected to the top of the infusion pump body 2.

[0030] The drive motor 901 directly drives the winding roller 903, and the lifting and lowering of the infusion pump body 2 is controlled by the winding and lowering of the cable 904. The top arrangement of the guide wheel 905 optimizes the force transmission path of the cable 904, so that the direction of the tension is always consistent with the axis of the main rod 1, reducing friction loss. The integrated design inside the protective cover 11 protects the core components and keeps the appearance of the equipment clean. The symmetrical arrangement of the double hooks 13 facilitates the balanced suspension of the infusion bag and achieves precise lifting and lowering positioning. With the double locking of the limit knob 4, the risk of accidental fall of the infusion pump is completely eliminated, and it can automatically maintain its position in the event of power failure, providing a safe and reliable height adjustment solution for clinical infusion.

[0031] Working principle: The main rod 1 pushes the equipment, at which time the moving wheel 707 drives the equipment to the working area. Then, the control motor 701 is started to drive the control rod 702 to rotate. The control wheel is then driven to rotate along its trajectory. During this process, the most convex position of the control wheel slowly slides out from the inside of the limit groove 705. Then, the return spring 710 and the hydraulic rod 709 react to the connecting frame 708, pulling the connecting frame 708 upward with the rotation amplitude of the control wheel until the convex surface of the control wheel is parallel to the ground. The guide wheel 905 falls off the ground and moves into the inside of the groove 6. As the control lever 702 rotates, it drives the drive block 801 to rotate. As the drive block 801 rotates, its outer side slowly squeezes the adsorption plate 802 downward, causing the air inside to be discharged outward. When the raised surface of the control wheel 703 is parallel to the ground, the raised surface of the drive block 801 is perpendicular to the ground. At this time, the adsorption plate 802 is compressed to the lowest position by the drive block 801. Then, the bottom of the adsorption plate 802 is tightly attached to the ground. When it is necessary to adjust the height of the infusion pump body 2, start the drive motor 901 to drive the winding roller 903 to rotate. At the same time, the winding roller 903 winds and tightens the cable 904. Then, the other end of the cable 904 pulls the infusion pump body 2 to slide on the outside of the main rod 1 through the locking block 3. At the same time, the middle part of the cable (904) slides smoothly inside the hub of the guide wheel 905. After the height of the infusion pump body 2 is adjusted to a suitable position, the control drive motor 901 is turned off. At this time, the cable 904 is taut and remains stationary. Then, the limit knob 4 is rotated so that its connecting end passes through the locking block 3 and presses against the main rod 1. The medicine bottle is then hung inside the hook 13.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A freefall prevention device for an infusion pump, comprising a main rod (1) and an infusion pump body (2), characterized in that: The bottom end of the infusion pump body (2) is fixedly connected to a connecting seat, and a locking block (3) is fixedly connected to one side of the connecting seat. The outer side of the main rod (1) is embedded in the interior of the locking block (3). The front end of the locking block (3) is movably connected to a limit knob (4) by a thread, and the connecting end of the limit knob (4) passes through the locking block (3) and contacts the outer side of the main rod (1). The bottom end of the main rod (1) is fixedly connected to a base (5), and the base (5) is frustum-shaped. An extension seat (10) is fixedly connected to the outer side of the base (5), and the extension... A protective cover (11) is fixedly connected to the top of the extension seat (10). A groove (6) is provided at the bottom of the base (5). A state switching mechanism (7) is movably connected inside the groove (6). An anti-tipping mechanism (8) is movably connected inside the state switching mechanism (7). An anti-fall height adjustment mechanism (9) is provided inside the protective cover (11). The output end of the anti-fall height adjustment mechanism (9) is fixedly connected to the top of the infusion pump body (2). A heat dissipation grille (12) is fixedly connected to one side of the protective cover (11).

2. The anti-free fall device for an infusion pump according to claim 1, characterized in that: The state switching mechanism (7) includes a control motor (701), a control lever (702), an adjustment wheel (703), an adjustment seat (704), and a limiting groove (705). The adjustment wheel (703) is elliptical and is fixedly connected to the outside of the control lever (702) in a symmetrical manner. There are two adjustment wheels (703) in a T-shape. The limiting groove (705) is arc-shaped and is fixedly connected to the top of the adjustment seat (704). The adjustment wheels (703) are located directly below the control wheel. The outside of the adjustment wheel (703) is attached to the inside of the limiting groove (705). One end of the control lever (702) is fixedly connected to the output end of the control motor (701) through a coupling.

3. The anti-free fall device for an infusion pump according to claim 2, characterized in that: The control rod (702), adjustment wheel (703), adjustment seat (704) and limit groove (705) are all located inside the groove (6), and both ends of the control rod (702) are movably connected to the inner wall of the groove (6) through bearings. One end of the control rod (702) passes through the base (5) and extends to the top of the extension seat (10), and the control motor (701) is fixedly connected to the surface of the extension seat (10).

4. The anti-free fall device for an infusion pump according to claim 3, characterized in that: The state switching mechanism (7) further includes a transmission rod (706), a moving wheel (707), a connecting frame (708), a hydraulic rod (709), and a return spring (710). There are two transmission rods (706), and the moving wheel (707) is movably connected to both ends of the transmission rod (706). There are two connecting frames (708) arranged symmetrically. The two ends of the connecting frame (708) are movably connected to the outside of the two transmission rods (706) through bearings. The telescopic ends of the hydraulic rods (709) are fixedly connected to the middle position of the connecting frame (708), and the return springs (710) are respectively sleeved on the outside of the hydraulic rods (709).

5. The anti-free fall device for an infusion pump according to claim 4, characterized in that: The bottoms of the two adjustment seats (704) are respectively movably connected to the middle position of the transmission rod (706) via bearings. The end of the hydraulic rod (709) away from the connecting frame (708) is fixedly connected to the inside of the groove (6). One end of the return spring (710) is fixedly connected to the surface of the connecting frame (708), and the other end of the return spring (710) is fixedly connected to the inside of the groove (6).

6. The anti-free fall device for an infusion pump according to claim 1, characterized in that: The anti-tipping mechanism (8) includes a drive block (801), an adsorption plate (802), a connecting rod (803), and a collar (804). The drive block (801) is elliptical, the adsorption plate (802) is frustoconical, and the adsorption plate (802) is located directly below the drive block (801). The connecting rod (803) is symmetrically arranged and one end is fixedly connected to the outside of the adsorption plate (802). The collar (804) is fixedly connected to the other end of the connecting rod (803).

7. The anti-free fall device for an infusion pump according to claim 6, characterized in that: The collars (804) are respectively sleeved on the outside of the transmission rod (706), and the drive block (801) is fixedly connected to the middle position of the transmission rod (706) at the shaft center. The drive block (801) and the control wheel (703) are arranged in opposite planes and perpendicular to each other.

8. The anti-free fall device for an infusion pump according to claim 1, characterized in that: The fall protection height adjustment mechanism (9) includes a drive motor (901), a support frame (902), a winding roller (903), a cable (904), a guide wheel (905), and a mounting frame (906). The winding roller (903) is movably connected to the inside of the support frame (902) via a rotating shaft. The drive motor (901) is fixedly connected to the outside of the support frame (902), and the output end of the drive motor (901) passes through the support frame (902) and is fixedly connected to one end of the winding roller (903) via a coupling. One end of the cable (904) is wound around the outside of the winding roller (903), and the guide wheel (905) is movably connected to the inside of the top of the mounting frame (906).

9. A fall protection device for an infusion pump according to claim 8, characterized in that: The support frame (902) is fixedly connected to the surface of the extension seat (10), and the drive motor (901), support frame (902) and winding roller (903) are all located inside the protective cover (11). The mounting frame (906) is fixedly connected to the top of the main rod (1), and the guide wheel (905) is located directly above the main rod (1). Hooks (13) are fixedly connected to both sides of the mounting frame (906). The end of the cable (904) away from the winding roller (903) passes through the protective cover (11), slides through the hub of the guide wheel (905), and is fixedly connected to the top of the infusion pump body (2).

10. The method of using the anti-free fall device for an infusion pump according to claims 1-9, characterized in that: Includes the following steps: S1. The device is pushed by the main rod (1). At this time, the moving wheel (707) drives the device to the working area. Then, the control motor (701) is started to drive the control rod (702) to rotate. Then the control wheel is driven to rotate along its trajectory. During this process, the most convex position of the control wheel slowly slides out from the inside of the limit groove (705). Then, the reset spring (710) and the hydraulic rod (709) react on the connecting frame (708) and pull the connecting frame (708) upward with the rotation amplitude of the control wheel until the convex surface of the control wheel is parallel to the ground. The guide wheel (905) falls off the ground and moves into the inside of the groove (6). S2. Then the control lever (702) rotates and drives the drive block (801) to rotate. As the drive block (801) rotates, its outer side slowly squeezes the adsorption plate (802) downward, causing the air inside to be discharged outward. When the raised surface of the control wheel (703) is parallel to the ground, the raised surface of the drive block (801) is perpendicular to the ground. At this time, the adsorption plate (802) is compressed to the lowest position by the drive block (801). Then, the bottom of the adsorption plate (802) is tightly attached to the ground. S3. When it is necessary to adjust the height of the infusion pump body (2), start the drive motor (901) to drive the winding roller (903) to rotate. At the same time, the winding roller (903) winds and tightens the cable (904). Then, the other end of the cable (904) pulls the infusion pump body (2) to slide on the outside of the main rod (1) through the locking block (3). At the same time, the middle part of the cable (904) slides smoothly inside the hub of the guide wheel (905). S4. After adjusting the height of the infusion pump body (2) to a suitable position, control the drive motor (901) to turn off. At this time, the cable (904) is taut and remains stationary. Then, rotate the limit knob (4) to pass its connecting end through the card block (3) and press against the main rod (1). Then hang the medicine bottle inside the hook (13).

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