Single-drive multi-lift infusion apparatus

Abstract

The invention discloses a single-drive multi-lift infusion apparatus which comprises an infusion support capable of suspending intravenous infusion consumables, the infusion support is provided with a plurality of suspenders capable of vertically sliding along a base column under the electric driving action of a driving mechanism, and the driving mechanism comprises a traction rope, a winding assembly, an electric driving assembly, a return assembly and a positive pressure assembly. The two sides of the electric drive assembly are each provided with a plurality of winding assemblies, and all the winding assemblies can be pushed by the positive pressure assembly in the working period through magnetic force to be connected with the electric drive assembly and can be pushed by the return assembly in the natural state to be away from the electric drive assembly through elastic force. And pulling ropes are arranged on the hanging rods in a one-to-one correspondence mode, each pulling rope is wound by the corresponding winding assembly, and independent lifting of the multiple hanging rods can be achieved under the single-drive condition.

Description

Technical Field

[0001] The present invention relates to the technical field of medical infusion, in particular to the technical field of infusion sets. Background Art

[0002] Intravenous injection is a medical method of injecting media such as blood, medicine and nutrient solution directly into the vein. It can be divided into short-term injection and continuous injection. Among them, short-term injection is mostly to inject the medium directly into the vein with a syringe, while continuous injection is usually carried out by lifting the container containing the medium through a lifting infusion set and dripping it into the vein (commonly known as "drip").

[0003] A lifting infusion set is usually composed of an infusion stand with a hook and disposable intravenous infusion consumables. At present, the most common infusion stands on the market generally have multiple hooks set on the same lifting column at the same time and the lifting and lowering adjustment of the lifting column is achieved by manual sliding, such as a compact medical infusion stand with publication number CN108653865A and a telescopic infusion stand with announcement number CN211634641U. This design, on the one hand, makes it impossible to lift and lower each hook individually, and on the other hand, there is also the problem of very laborious manual operation (especially when each hook is hung with a container containing a medium).

[0004] For this reason, some lifting infusion sets choose to use driving mechanisms such as motors, cylinders or liquid pipes to drive the lifting column to electrically lift and lower, such as an intravenous infusion suspension bracket with announcement number CN221579194U and an adjustable infusion nursing bracket with announcement number CN211724233U; however, the respective hooks of the above two lifting infusion sets can still only be lifted and lowered synchronously; if such lifting infusion sets need to enable the respective hooks to be lifted and lowered separately, each hook needs to be separately equipped with a corresponding set of driving mechanisms; this will not only lead to an increase in the manufacturing cost of the device, but also lead to an increase in the size of the device. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a single-drive multi-lift infusion set that can achieve independent lifting of multiple suspension rods under single-drive conditions.

[0006] To achieve the above-mentioned purpose, the present invention proposes a single-drive multi-lift infusion pump, including an infusion stand that can suspend intravenous infusion consumables, the infusion stand having a plurality of suspension rods that can slide vertically along a base column under the electric drive of a driving mechanism, the driving mechanism comprising a traction rope, a winding assembly, an electric drive assembly, a return assembly and a positive pressure assembly, a plurality of winding assemblies are respectively provided on both sides of the electric drive assembly, and each winding assembly can be engaged with the electric drive assembly during operation through the magnetic force of the positive pressure assembly, and can be pushed away from the electric drive assembly by the elastic force of the return assembly in a natural state, and a traction rope is installed on each of the suspension rods one by one, and each of the traction ropes is respectively wound up by a corresponding winding assembly.

[0007] Preferably, each of the winding components is composed of a reel rotatably connected to a support frame and a passive gear linked to the reel, and the electric drive component includes a motor, a driving shaft and a driving gear. The driving shaft is driven to rotate by the motor and is equipped with a driving gear corresponding to each passive gear one by one.

[0008] Preferably, each of the support frames can slide laterally relative to the casing through a guide rail assembly, and the guide rail assembly is composed of a rail and a slider that are slidably connected to each other.

[0009] Preferably, the return assembly is a return spring having one end fixed to the housing and the other end fixed to the corresponding support frame.

[0010] Preferably, the positive pressure component is a pair of electromagnets that can magnetically repel each other, one of the electromagnets is fixed on the casing and the other electromagnet is fixed on the corresponding support frame.

[0011] Preferably, the housing is located at the bottom of the base column and can slide freely on the ground through a universal slide.

[0012] Preferably, a rope cavity and a plurality of rod cavities are provided in the base column on both sides of the rope cavity. Each of the suspension rods is composed of a movable block slidably connected in the corresponding rod cavity and a hook indirectly connected to the movable block through a vertical pole. The driving mechanism leads each traction rope out of the rope cavity and fixes it to the corresponding movable block through a plurality of first fixed pulleys.

[0013] Preferably, each of the traction ropes is led out from the rope cavity through a second fixed pulley and connected to a corresponding winding assembly.

[0014] Preferably, each of the suspension rods is locked at a specified height by a locking mechanism, and each of the locking mechanisms is composed of a locking block, a locking sleeve threadedly connected to the outside of the locking block, a ball rotatably connected to the locking sleeve on the side of the base column, and a locking spring with an elastic tendency to pull the locking block close to the base column. Each of the movable blocks is provided with a block blind hole for installing the corresponding locking spring, and the base column is provided with a plurality of vertical through grooves that pass through the outside and each rod cavity, and the outer side surface of each of the through grooves is provided with a plurality of inner recesses arranged in sequence from top to bottom along the through groove, and each of the locking blocks is provided with an outer convex strip that can pass through the corresponding through groove and an outer boss that can be inserted into the corresponding inner recess, and each of the outer convex strips can extend into the corresponding block blind hole under the elastic pulling action of the corresponding locking spring.

[0015] Preferably, a push-pull sensor is also provided at one end of each of the outer convex strips facing the corresponding locking spring.

[0016] Beneficial effects of the present invention: 1) By vertically placing a plurality of suspension rods in the base column, and adding a driving mechanism composed of a traction rope, a reeling assembly, an electric drive assembly, a return assembly and a positive pressure assembly at the bottom of the base column, the positive pressure assembly can be used to push the reeling assembly to engage with the electric drive assembly so that the reeling assembly can gradually reel in the traction rope under the electric drive of the electric drive assembly and drive the corresponding suspension rod to rise, and the return assembly can be used to pull the reeling assembly back away from the electric drive assembly so that the corresponding suspension rod can automatically descend accordingly, and finally the independent lifting and lowering of multiple suspension rods can be realized under the condition of a single drive; 2) By using a pair of electromagnets as the positive pressure component and a return spring with a built-in guide telescopic bolt as the return component, the magnetic repulsion between the two electromagnets can be used as the power to push the winding component inward, and the elastic force of the return spring can be used as the power to pull the winding component outward. Not only is the structure simple, but it is also relatively power-saving because the two electromagnets do not need to be normally open; 3) By setting a rope cavity in the base column and setting a plurality of rod cavities on both sides of the rope cavity, it can not only ensure that the sliding of each suspension rod does not affect each other, but also enable each traction rope to be led out up and down through the same rope cavity to save space (i.e., improve the compactness of the structural setting), and the first fixed pulley and the second fixed pulley at both ends of the base column can also better guide the traction rope to enter and exit the corresponding position; 4) A locking mechanism is formed by using a locking spring, a locking block, a locking sleeve and a ball bearing, and a through groove and an inner recess are provided on the base column, which can respectively match the outer convex strip and the outer boss of the locking block. On the one hand, when the outer boss is inserted into the designated inner recess, the locking mechanism can lock the height of the suspension rod. On the other hand, after the outer boss is pulled out of the designated inner recess, the locking sleeve with a ball bearing can be used to keep the outer boss in an outward pulled state after being released. 5) By adding a push-pull sensor to one end of the outer convex strip facing the corresponding locking spring, the force on the outer convex strip can be monitored to prevent the winding component from returning to its original position in advance.

[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the single-drive multi-lift infusion device of the present invention; Figure 2 This is a front view of the single-drive multi-lift infusion device of the present invention when the intravenous infusion consumables are removed; Figure 3 yes Figure 2 An enlarged schematic diagram of point A; Figure 4 It is a schematic diagram of the matching arrangement of the through groove and the inner recess of the single-drive multi-lift infusion device of the present invention; Figure 5 It is a front view of the suspension rod of the single-drive multi-lift infusion device of the present invention; Figure 6 This is a front view of the driving mechanism of the single-drive multi-lift infusion device of the present invention when the casing is cut open; Figure 7 It is a top view of the driving mechanism of the single-drive multi-lift infusion device of the present invention with part of the casing removed.

[0019] In the figure: 1-base column, 11-rod cavity, 12-rope cavity, 13-through groove, 14-inner recess, 2-suspender rod, 21-vertical rod, 22-hook, 23-movable block, 3-driving mechanism, 31-casing, 32-traction rope, 33-first fixed pulley, 34-winding assembly, 341-support frame, 342-passive gear, 343-reel, 35-electric drive assembly, 351-motor, 352-driving shaft, 353-driving gear, 36-return assembly, 37-positive pressure assembly, 38-guide rail assembly, 381-track, 382-slider, 39-second fixed pulley, 4-intravenous infusion consumables, 5-universal slide, 6-locking mechanism, 61-locking spring, 62-locking block, 63-locking sleeve, 64-ball, 65-push-pull sensor. DETAILED DESCRIPTION

[0020] Embodiment 1: See also Figure 1 , Figure 6 and Figure 7The single-drive multi-lift infusion device of the present invention comprises an infusion stand for suspending intravenous infusion consumables 4, the infusion stand having a plurality of suspension rods 2 which can slide vertically along a base column 1 under the electric drive of a driving mechanism 3, the driving mechanism 3 comprising a traction rope 32, a winding assembly 34, an electric drive assembly 35, a return assembly 36 and a positive pressure assembly 37, a plurality of winding assemblies 34 are respectively arranged on both sides of the electric drive assembly 35, and each winding assembly 34 can be respectively engaged with the electric drive assembly 35 by magnetic force pushing of the positive pressure assembly 37 during operation, and can be respectively pushed away from the electric drive assembly 35 by elastic force of the return assembly 36 in a natural state, and a traction rope 32 is correspondingly installed on each of the suspension rods 2, and each of the traction ropes 32 is respectively wound by a corresponding winding assembly 34.

[0021] See also Figure 6 and Figure 7 Each of the winding components 34 is composed of a reel 343 rotatably connected to a support frame 341 and a passive gear 342 linked to the reel 343. The electric drive component 35 includes a motor 351, a driving shaft 352 and a driving gear 353. The driving shaft 352 is driven to rotate by the motor 351 and is equipped with a driving gear 353 corresponding to each passive gear 342.

[0022] See also Figure 6 and Figure 7 Each of the support frames 341 can slide laterally relative to the housing 31 through a guide rail assembly 38, and the guide rail assembly 38 is composed of a rail 381 and a slider 382 that are slidably connected to each other.

[0023] See also Figure 6 and Figure 7 The return assembly 36 is a return spring with one end fixed to the housing 31 and the other end fixed to the corresponding support frame 341; each return spring may also contain a guide telescopic bolt to prevent the occurrence of poor spring expansion and contraction due to spring bending and deformation.

[0024] See also Figure 6 and Figure 7 The positive pressure assembly 37 is a pair of electromagnets that can magnetically repel each other, one of the electromagnets is fixed on the housing 31 and the other electromagnet is fixed on the corresponding support frame 341.

[0025] See also Figure 1 and Figure 2 The housing 31 is located at the bottom of the base column 1 and can slide freely on the ground through the universal slide 5; specifically, each movable wheel located on the universal slide 5 can be a universal wheel with a braking function.

[0026] See also Figure 3 The base column 1 is provided with a rope cavity 12 and a plurality of rod cavities 11 located on both sides of the rope cavity 12. Each of the suspension rods 2 is composed of a movable block 23 slidably connected in the corresponding rod cavity 11 and a hook 22 indirectly connected to the movable block 23 through a vertical rod 21. The driving mechanism 3 leads each traction rope 32 out of the rope cavity 12 through a plurality of first fixed pulleys 33 and fixes it to the corresponding movable block 23.

[0027] See also Figure 2 and Figure 7 Each of the traction ropes 32 is led out from the rope chamber 12 through the second fixed pulley 39 and connected to the corresponding winding assembly 34.

[0028] In this embodiment, the driving mechanism 3 is controlled by a controller, and the controller may be a remote controller or a control panel installed outside the base column 1 and the housing 31 .

[0029] In addition, the adjacent surfaces between each movable block 23 and the corresponding rod cavity are respectively rough surfaces; with such a design, each movable block 23 can gradually descend at a relatively slow speed under the dual effects of gravity and friction after being lifted and released (the descending speed can be adjusted by the roughness of the rough surface before leaving the factory).

[0030] The working process of this embodiment: Taking the case where there are four suspension rods 2 (two on the left side and two on the right side), the suspension rods 2 can be used to suspend intravenous infusion consumables 4 for infusing blood, medicine or nutrient solution.

[0031] like Figure 7 As shown, if it is necessary to lift the boom 2 located on the upper right and keep the remaining three booms 2 stationary, the two electromagnets of the positive pressure assembly 37 located on the upper right can be energized to repel each other, so that the winding assembly 34 located on the upper right gradually approaches the driving shaft 352 to the left along the corresponding track 381 along the slider 382 thereunder, until its passive gear 342 is engaged with the corresponding active gear 353; then, the motor 351 is used to drive the active shaft 352 to rotate, so that the traction rope 32 located on the upper right is wound by the corresponding reel 343 under the transmission action of the above-mentioned passive gear 342 and the active gear 353, so that the boom 2 located on the upper right gradually moves upward to the specified height along the rod cavity 11 where it is located (the remaining booms 2 will not be lifted because the corresponding winding assemblies 34 are respectively detached from the electric drive assemblies).

[0032] When the two electromagnets of the positive pressure assembly 37 located on the upper right are powered off, the winding assembly 34 located on the upper right will return to its original position under the elastic pulling action of the corresponding return assembly 36 (i.e. the passive gear 342 located on the upper right gradually moves away from the active gear 353), thereby causing the suspension rod 2 located on the upper right to automatically descend along the rod cavity 11 in which it is located.

[0033] In addition, existing operating rooms often only have hooks on the ceiling for hanging saline bags, which results in medical staff having to repeatedly go up and down on a bench and replace the saline bags, which is very troublesome. In the above situation, the suspension rod 2 can also be used to suspend the flushing liquid bag to assist in the saline flushing operation during the shoulder arthroscopy surgery, thereby achieving secondary cleaning and disinfection (some disinfectant may remain on the arthroscope after disinfection, and these residues may cause the body's rejection reaction; flushing with saline can play a role in secondary cleaning and disinfection, reducing the risk of rejection reaction), maintaining an isotonic environment (joint fluid and saline are both isotonic fluids, so that Flushing with normal saline can maintain an isotonic environment in the joint cavity, which helps reduce surgical irritation and damage to the joints), keep the surgical field clear (intraoperative bleeding often affects the clarity of the surgical field. Flushing with normal saline can remove blood and other impurities, keep the surgical field clear, and facilitate the smooth progress of the operation), regulate joint cavity pressure (by adjusting the flushing speed and pressure of normal saline, the joint capsule can be maintained with sufficient space to facilitate endoscopic operation and avoid accidental injury), and prevent hypothermia (flushing with normal saline controlled at a temperature of around 37°C can, to a certain extent, prevent the patient from experiencing hypothermia during surgery).

[0034] Embodiment 2: See also Figure 3 , each of the suspension rods 2 is locked at a specified height by a locking mechanism 6, each of the locking mechanisms 6 is composed of a locking block 62, a locking sleeve 63 threadedly connected to the outside of the locking block 62, a ball 64 rotatably connected to the locking sleeve 63 on the side facing the base column 1, and a locking spring 61 with an elastic tendency to pull the locking block 62 close to the base column 1, each of the movable blocks 23 is provided with a block blind hole for the corresponding locking spring 61 to be installed, the base column 1 is provided with a plurality of vertically arranged through grooves 13 that pass through the outside and each rod cavity 11, the outer side surface of each of the through grooves 13 is provided with a plurality of inner recesses 14 arranged in sequence from top to bottom along the through groove 14, each of the locking blocks 62 is provided with an outer convex strip that can pass through the corresponding through groove 13 and an outer convex platform that can be inserted into the corresponding inner recess 14, and each of the outer convex strips can be extended into the corresponding block blind hole under the elastic pulling action of the corresponding locking spring 61.

[0035] In addition, a limiting structure such as a flange may be provided between each of the outer convex strips and the corresponding blind hole of the block, so as to utilize the limiting structure to prevent the outer convex strip from being completely pulled out of the blind hole of the block.

[0036] The rest is the same as in the first embodiment.

[0037] The working process of this embodiment: like Figure 7 As shown, after the upper right suspension rod 2 is raised, its height can be locked by the corresponding locking mechanism 6; at this time, the upper right suspension rod 2 will not automatically drop even when its corresponding passive gear 342 is no longer meshed with the active gear 353.

[0038] For the locking mechanism 6, when in the locked state, its outer convex strip is pulled by the locking spring 61 to pass through the through groove 13 and extend into the blind hole of the block, while its outer boss is stuck in one of the inner recesses 14 (the engaged outer boss and inner recess 14 can limit the up and down movement of the locking block 62); if unlocking is required, the locking block 62 is pulled outward until the outer boss is no longer stuck in any inner recess 14 (in the unlocked state, the locking sleeve 63 can be further twisted inward on this basis until each ball 64 contacts the base column 1 respectively, so that the outer boss will not be re-inserted into the inner recess 14 after releasing the hand).

[0039] Embodiment three: See also Figure 3 A push-pull sensor 65 is also provided at one end of each outer convex strip facing the corresponding locking spring 61.

[0040] In addition, in this embodiment, the locking mechanism 6 is controlled by a controller.

[0041] The rest is the same as in the first embodiment.

[0042] The working process of this embodiment: In this embodiment, the push-pull sensor 65 can be used to monitor the stress of the outer convex strip, so that after the suspension rod 2 moves to a specified position and is locked by the locking mechanism 6, the winding assembly 34 is allowed to leave the electric drive assembly 35.

[0043] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. Single drive multi-lift infusion set, characterized by: The invention comprises an infusion stand capable of suspending intravenous infusion consumables (4), the infusion stand having a plurality of suspension rods (2) capable of vertically sliding along a base column (1) under the electric drive of a driving mechanism (3), the driving mechanism (3) comprising a traction rope (32), a reeling assembly (34), an electric drive assembly (35), a return assembly (36) and a positive pressure assembly (37), a plurality of reeling assemblies (34) are respectively arranged on both sides of the electric drive assembly (35), and each reeling assembly (34) can be respectively engaged with the electric drive assembly (35) by magnetic force pushing of the positive pressure assembly (37) during operation, and can also be respectively pushed away from the electric drive assembly (35) by elastic force of the return assembly (36) in a natural state, and each traction rope (32) is respectively installed on each of the suspension rods (2), and each traction rope (32) is respectively reeled by a corresponding reeling assembly (34).

2. The single-drive multi-lift infusion device according to claim 1, characterized in that: Each of the winding assemblies (34) is respectively composed of a reel (343) rotatably connected to a support frame (341) and a passive gear (342) linked to the reel (343); the electric drive assembly (35) comprises a motor (351), a driving shaft (352) and a driving gear (353); the driving shaft (352) is driven to rotate by the motor (351) and is equipped with a driving gear (353) corresponding to each of the passive gears (342).

3. The single-drive multi-lift infusion device according to claim 2, characterized in that: Each of the support frames (341) can slide laterally relative to the housing (31) via a guide rail assembly (38), and the guide rail assembly (38) is composed of a rail (381) and a slider (382) that are slidably connected to each other.

4. The single-drive multi-lift infusion device according to claim 3, characterized in that: The return component (36) is a return spring having one end fixed to the housing (31) and the other end fixed to the corresponding support frame (341).

5. The single-drive multi-lift infusion device according to claim 3, characterized in that: The positive pressure assembly (37) is a pair of electromagnets that can magnetically repel each other, one of the electromagnets is fixed on the housing (31) and the other electromagnet is fixed on the corresponding support frame (341).

6. The single-drive multi-lift infusion device according to claim 3, characterized in that: The housing (31) is located at the bottom of the base column (1) and can slide freely on the ground through a universal sliding seat (5).

7. The single-drive multi-lift infusion device according to any one of claims 1 to 6, characterized in that: The base column (1) is provided with a rope cavity (12) and a plurality of rod cavities (11) located on both sides of the rope cavity (12). Each of the suspension rods (2) is composed of a movable block (23) slidably connected to the corresponding rod cavity (11) and a hook (22) indirectly connected to the movable block (23) via a vertical rod (21). The driving mechanism (3) leads each traction rope (32) out of the rope cavity (12) through a plurality of first fixed pulleys (33) and fixes them to the corresponding movable block (23).

8. The single-drive multi-lift infusion device according to claim 7, characterized in that: Each of the traction ropes (32) is led out of the rope chamber (12) through a second fixed pulley (39) and connected to a corresponding winding assembly (34).

9. The single-drive multi-lift infusion device according to claim 7, characterized in that: Each of the suspension rods (2) is locked at a specified height by a locking mechanism (6), each of the locking mechanisms (6) comprising a locking block (62), a locking sleeve (63) threadedly connected to the outside of the locking block (62), a ball (64) rotatably connected to the locking sleeve (63) on the side facing the base column (1), and a locking spring (61) having an elastic tendency to pull the locking block (62) closer to the base column (1), and each of the movable blocks (23) is provided with a block blind hole for installing the corresponding locking spring (61). The base column (1) is provided with a plurality of vertical through grooves (13) that penetrate the outside and the rod cavities (11); the outer side surface of each through groove (13) is provided with a plurality of inner recesses (14) that are arranged in sequence from top to bottom along the through groove (14); each locking block (62) is provided with an outer convex strip that can pass through the corresponding through groove (13) and an outer convex platform that can be inserted into the corresponding inner recess (14); each of the outer convex strips can extend into the corresponding blind hole of the block under the elastic pulling action of the corresponding locking spring (61).

10. The single-drive multi-lift infusion device according to claim 9, characterized in that: A push-pull sensor (65) is also provided at one end of each of the outer convex strips that faces the corresponding locking spring (61).

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