Seat for children infusion

Abstract

This invention discloses a child infusion chair, comprising a seat, a placement plate A and a placement plate B symmetrically arranged on both sides of the seat, an infusion rod on placement plate A, a fixed frame on placement plate A, a placement plate on the fixed frame, a fixed sleeve on placement plate A, a positioning unit on the placement plate, a position adjustment unit inside placement plate A, and a transmission unit inside placement plate A. This child infusion chair uses the placement plate to support the child's elbow area, and the infusion area is defined by the arc-shaped positioning plate and the arc-shaped positioning frame. The fixed frame and the placement plate on it can be adjusted in position using the sliding plate. Furthermore, under the transmission action of structural components such as a rope, a drive plate, a gear plate, and a gear, the gear can drive the infusion rod to adjust its height via the rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a seat for child infusion. BACKGROUND

[0002] The infusion seat is also called a drip chair, which is mainly used for medical units to infuse patients. The infusion chair is mainly composed of an infusion boom, a seat plate, a skin pad, a handrail foot, a cross beam and other accessories. It is usually made of aluminum alloy, stainless steel, iron and other materials. Since most people undergoing infusion have poor physical conditions, the infusion chair can facilitate patients to rest during the infusion treatment process.

[0003] During the infusion of a child's hand, the infusion needle needs to penetrate the skin and be inserted into the vein. During the insertion of the skin, the child is likely to resist due to pain, such as crying, restlessness and other physiological reactions. During the restlessness, the child's hand will pull the needle, causing the inserted needle to loosen, shift and other conditions. If the child continues to be in a state of restlessness, the needle tip of the infusion needle is likely to slip out of the blood vessel or penetrate the blood vessel wall and be injected into the subcutaneous tissue (specifically, the needle puncture site appears swollen and raised conditions). The medical staff needs to pull out the needle and replace the site to re-inject, which is likely to cause the child to have psychological panic and other conditions. Therefore, we propose a seat for child infusion. SUMMARY

[0004] The purpose of the present application is to provide a seat for child infusion to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical solution: a seat for child infusion, comprising a seat, a placing plate frame A and a placing plate frame B symmetrically arranged on both sides of the seat, a infusion rod arranged on the placing plate frame A, a fixed frame arranged on the placing plate frame A, and a placing plate arranged on the fixed frame for placing the child's elbow, and a fixed sleeve arranged on the placing plate frame A.

[0006] A positioning unit is arranged on the placing plate for fixing the hand region of the child for infusion.

[0007] A position adjusting unit is arranged inside the placing plate frame A for adjusting the height of the infusion rod according to the infusion position, so that the position adjusting unit prevents the bottle pressure from decreasing.

[0008] A transmission unit is arranged inside the placing plate frame A for driving the position adjusting unit to act according to the position of the fixed frame.

[0009] Preferably, the positioning unit comprises an arc-shaped positioning plate arranged on the placing plate, and the arc-shaped positioning plate is rotatably connected between one side of the placing plate and the inner wall thereof, and an arc-shaped positioning frame is arranged on the other side of the placing plate and rotatably connected between the other side of the placing plate and the inner wall thereof, wherein a plurality of ratchets are symmetrically arranged on the arc-shaped positioning plate, and the plurality of ratchets are equidistantly arranged on the arc-shaped positioning plate.

[0010] Preferably, the arc-shaped positioning frame is internally and symmetrically provided with a slide column, and the slide column is in a sliding state with the ratchets, so that the slide column is directionally and limitingly slid along the outer wall of the ratchets, and a connecting seat is arranged on the slide column, and a spring body is connected between the connecting seat and the inner wall of the arc-shaped positioning frame, wherein a through column is connected to one side of the connecting seat, the end of the through column penetrates the inner wall of the arc-shaped positioning frame and extends to the outside, and a pulling ring is arranged at the end of the through column.

[0011] Preferably, a rubber frame is arranged on the arc-shaped positioning frame.

[0012] Preferably, a fixing seat is arranged at the bottom of the placing plate, and a shaft body for rotationally connecting the fixing seat is arranged in the fixing frame, wherein a limiting seat is also symmetrically arranged at the bottom of the placing plate, a guide column is mounted on the limiting seat, guide grooves for slidably connecting the guide columns are arranged on the inner walls of the two sides of the fixing frame, and a plurality of resistance blocks I are mounted on the inner walls of the guide grooves.

[0013] Preferably, the transmission unit comprises a cavity arranged in the placing plate frame A, and a mounting plate frame is arranged on one side of the placing plate frame A, the mounting plate frame is located on one side of the cavity, a sliding plate body is arranged in the cavity, and one end of the sliding plate body is connected to the bottom of the fixing frame, wherein a stress plate for slidably connecting the inner wall of the cavity is also arranged in the cavity, and the stress plate is rotatably connected with the sliding plate body.

[0014] Preferably, an elastic member is arranged on both sides of the stress plate, and a slot for slidably connecting the elastic member is arranged on both sides of the cavity, a plurality of resistance blocks II are equidistantly arranged in the slot, the end of the elastic member is in a sliding state with the plurality of resistance blocks II, a rope is connected to the bottom of the stress plate, and a cavity is also arranged in the cavity, a driving plate for slidably connecting the inner wall of the cavity is arranged in the cavity, and the end of the rope penetrates the inner wall of the cavity and extends to one side of the driving plate.

[0015] Preferably, a groove is also arranged in the cavity, and a return spring is arranged in the groove, one end of the return spring is in contact with one side of the driving plate, a toothed plate is arranged on the driving plate, and the position adjusting unit is arranged in the cavity.

[0016] Preferably, the position adjusting unit comprises a gear one arranged inside the cavity, and a cylinder is arranged on the gear one for connection with the inner wall of the cavity, the gear one is rotationally connected with the cylinder and meshes with the gear plate, and a gear two for meshing with the gear one is further arranged inside the cavity.

[0017] Preferably, the infusion rod extends through the inner wall of the fixing sleeve and into the inside of the fixing sleeve, and a rod body for rotationally connecting with the infusion rod is arranged on the end of the infusion rod, the rod body extends through the placing plate frame A, the gear two and the inner wall of the cavity and extends to the outside, the rod body is slidingly connected with the gear two, a sliding shaft is arranged on the rod body, and a helical lifting groove for slidingly connecting with the sliding shaft is arranged inside the fixing sleeve.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The present application places the elbow area of the child on the placing plate, limits the infusion area of the child under the action of the arc-shaped positioning plate and the arc-shaped positioning frame, controls the distance of the arc-shaped positioning plate entering the arc-shaped positioning frame through the sliding relationship between the ratchet and the sliding column, adjusts the limiting force appropriately, adjusts the position of the fixing frame and the placing plate thereon through the sliding plate frame, drives the gear two to adjust the height of the infusion rod through the rod body, avoids the needle from falling off due to the restlessness of the child, and reduces the probability of backflow.

[0020] The present application drives the gear plate to mesh with the gear one through the driving plate, synchronously rotates the meshing gear two under the action of the gear one, changes the speed through the different number and size of the gear one and the gear two, ensures the consistency of the rising height between the infusion rod and the fixing frame, and reduces the probability of reducing the infusion pressure. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the present application;

[0023] Figure 3 It is a schematic diagram of the structure of the fixing frame and the placing plate of the present application;

[0024] Figure 4 It is a schematic diagram of the internal partial structure of the fixing frame of the present application;

[0025] Figure 5Arc-shaped positioning plate and arc-shaped positioning frame cross-sectional structure schematic view of the present application;

[0026] Figure 6 Arc-shaped positioning plate and arc-shaped positioning frame cross-sectional structure schematic view of the present application Figure 5 Area structure enlarged schematic view of A in the present application;

[0027] Figure 7 Arc-shaped positioning frame internal structure schematic view of the present application;

[0028] Figure 8 Transmission unit structure schematic view of the present application;

[0029] Figure 9 Stress plate and other components structure schematic view of the present application;

[0030] Figure 10 Grooving internal structure schematic view of the present application;

[0031] Figure 11 Position adjustment unit structure schematic view of the present application;

[0032] Figure 12 Fixed sleeve and rod structure schematic view of the present application;

[0033] Figure 13 Fixed sleeve internal structure schematic view of the present application.

[0034] In the figure: 1, chair seat; 2, placing plate frame A; 3, placing plate frame B; 4, infusion rod; 5, fixed frame; 51, shaft body; 52, guide groove; 53, resistance block one; 6, placing plate; 61, fixed seat; 62, limit seat; 63, guide column; 7, fixed sleeve; 8, positioning unit; 81, arc-shaped positioning plate; 82, arc-shaped positioning frame; 83, ratchet; 84, sliding column; 85, connecting seat; 86, spring body; 87, through column; 88, pulling ring; 89, rubber frame; 9, position adjustment unit; 91, gear one; 92, cylinder; 93, gear two; 94, rod; 95, sliding shaft; 96, helical lifting groove; 10, transmission unit; 101, cavity; 102, mounting plate frame; 103, sliding plate body; 104, stress plate; 105, telescopic part; 106, grooving; 107, resistance block two; 108, rope; 109, cavity; 100, driving plate; 11, groove; 111, return spring; 112, toothed plate. Embodiment

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0036] Please refer to Figures 1-13The application provides a technical scheme: a seat for child infusion, the application makes corresponding improvements for the technical problems mentioned in the background technology, including a seat 1, placement plate frames A2 and B3 symmetrically and fixedly installed on both sides of the seat 1, it is to be noted that the placement plate frames A2 and B3 are handrail structures in the prior art, for the convenience of description, the placement plate frames A2 and B3 are selected for description, wherein the placement plate frame B3 is used for placing the other elbow of a child or patient, and a fixed sleeve 7 is further fixedly installed on the placement plate frame A2, and an infusion rod 4 is arranged on the placement plate frame A2, the infusion rod 4 penetrates the inner wall of the fixed sleeve 7 and extends into the inside of the fixed sleeve 7, a fixed frame 5 is arranged on the placement plate frame A2, in the initial state, the fixed frame 5 is in contact with the placement plate frame A2, and the fixed frame 5 is provided with a placement plate 6 for placing the elbow of a child, it is further explained that the fixed seat 61 is fixedly installed at the bottom of the placement plate 6, and the fixed seat 61 is located at the middle position of the bottom of the placement plate 6, and a shaft body 51 for rotationally connecting the fixed seat 61 is arranged in the fixed frame 5, and the shaft body 51 is connected with the inner walls on both sides of the fixed frame 5, wherein the bottom of the placement plate 6 is further symmetrically provided with a limiting seat 62 (symmetrically arranged at the bottom of the placement plate 6 with the center line of the fixed seat 61 as the axis), wherein the limiting seat 62 is fixedly provided with a guide column 63, and the inner walls on both sides of the fixed frame 5 are provided with guide grooves 52 for slidingly connecting with the guide column 63, it is to be noted that the limiting length of the guide groove 52 is short, that is, the placement plate 6 can only be slightly shaken, wherein a plurality of resistance blocks one 53 are arranged on the inner wall of the guide groove 52, wherein the placement plate 6 is further provided with a positioning unit 8, the positioning unit 8 is used for fixing the hand region of infusion, it is further explained that when the positioning unit 8 is used for fixing the hand region (that is, the wrist) of the child, in actual life, if the elbow is kept in the same position for a long time, the nerves or blood vessels of the elbow will be compressed, resulting in reduced blood supply, and the elbow feeling will be impaired, causing hand numbness, the positioning unit 8 fixes the wrist of the patient, and the elbow can be slightly moved, but if the placement plate 6 is always in the same horizontal plane, the elbow will be restricted and not easy to move, and through the structural design of the application, the angle of the placement plate 6 can be slightly jumped, and when the angle of the placement plate 6 is adjusted in the fixed frame 5, the placement plate 6 rotates around the shaft body 51 as the center, and the guide column 63 moves along the guide groove 52, wherein the guide column 63 is subjected to a certain resistance from the resistance blocks one 53 during movement, to avoid the occurrence of backflow due to too fast movement;

[0037] Further illustrate, due to the long infusion time, children inevitably appear in the period of restlessness and other conditions, although through the positioning unit 8 to the hand of children is limited, but part of children are prone to sudden stand up during infusion, easy to make infusion needle appear off and other conditions, and the present application is placed in the plate frame A2 inside setting has transmission unit 10, the first effect of the transmission unit 10, can make the fixed frame 5 position adjustment (the corresponding placement plate 6 is carried out synchronous position adjustment), to make the child suddenly get up, the placement plate 6 carries out synchronous rising action, and under the action of positioning unit 8, ensure that the child infusion site is in the state of being limited, to avoid the condition of infusion needle off, at the same time according to the liquid pressure principle P = ρgh, wherein ρ is the density of liquid, that is, the infusion density in the application, g is the earth's gravity acceleration, h is the vertical height from the infusion site to the free surface, wherein ρ and g are constant, that is, when the distance between the infusion position and the vertical height of the free surface is reduced, the hydraulic pressure is reduced at this time, and the backflow condition is prone to occur, and the present application is placed in the plate frame A2 inside setting has position adjusting unit 9, which is used for adjusting the height of the infusion rod 4 according to the infusion position, and the other effect of the transmission unit 10 is to drive the position adjusting unit 9 to act according to the position of the fixed frame 5.

[0038] As a further limitation of the application, the positioning unit 8 includes an arc-shaped positioning plate 81 mounted on the placement plate 6, and the arc-shaped positioning plate 81 is located on one side of the placement plate 6 and is rotatably connected with the inner wall thereof, and an arc-shaped positioning frame 82 is fixedly installed on the other side of the placement plate 6. Further illustrate, the arc-shaped positioning frame 82 is made of flexible material, it should be noted that the arc-shaped positioning plate 81 can be limited to slide in the arc-shaped positioning frame 82, wherein a plurality of ratchet teeth 83 are symmetrically installed on the arc-shaped positioning plate 81, and the plurality of ratchet teeth 83 are equidistantly installed on the arc-shaped positioning plate 81, a slide column 84 is symmetrically arranged in the arc-shaped positioning frame 82, and the slide column 84 and the ratchet teeth 83 are in sliding state, so that the slide column 84 slides along the outer wall of the ratchet teeth 83 in a directional manner, and a connecting seat 85 is installed on the slide column 84, the two ends of the slide column 84 are connected with the connecting seat 85, and the connecting seat 85 is connected with the spring body 86 between the inner wall of the arc-shaped positioning frame 82, wherein the connecting seat 85 is connected with a through column 87 on one side, and the through column 87 extends to the outside through the inner wall of the arc-shaped positioning frame 82, and a pulling ring 88 is installed at the end of the through column 87, wherein a rubber frame 89 is installed near the infusion site of the arc-shaped positioning frame 82, which can be used to place the corresponding auxiliary tool in the rubber frame 89, for example, when it is cold in winter, "warm baby" and other heating articles can be placed in the rubber frame 89, which has certain practicability;

[0039] Specifically, before infusion, the child sits on the seat 1 and places his hands on the placement plate 6, at this time, the arc-shaped positioning plate 81 is pulled into the arc-shaped positioning frame 82, in the process of entering, the ratchet 83 on the arc-shaped positioning plate 81 acts on the slide column 84, the slide column 84 slides along the surface of the ratchet 83, it should be noted that the shape of the ratchet 83 is similar to a right triangle, the slide column 84 slides between the inclined surface of the ratchet 83, if the arc-shaped positioning plate 81 is separated from the arc-shaped positioning frame 82, the slide column 84 contacts the right angle surface of the ratchet 83 and hinders the ratchet 83, thereby making the arc-shaped positioning plate 81 and the arc-shaped positioning frame 82 form a whole to position the patient's hands, when contact positioning is needed, the circular ring 88 is pulled outward, the penetrating column 87 is driven to move outward, at this time, the connecting seat 85 drives the slide column 84 to move outward, the spring body 86 is compressed, and at this time, the slide column 84 is not on the right angle surface of the ratchet 83, that is, it will not hinder the outward movement of the arc-shaped positioning plate 81, thereby achieving the purpose of contact positioning.

[0040] As a further limitation of the application, the transmission unit 10 comprises a cavity 101 arranged inside the placement rack A2, and the placement rack A2 is provided with a mounting rack 102 on one side, which is connected to the side of the placement rack A2 by bolts, and the mounting rack 102 is located on one side of the cavity 101, which protects the cavity 101 and the structural components inside it, wherein the cavity 101 is provided with a sliding plate body 103 connected to the bottom of the fixed frame 5, and the cavity 101 is also provided with a stress plate 104 connected to the inner wall by sliding connection, and the stress plate 104 is connected to the sliding plate body 103 by rotating connection, further description, the size of the sliding plate body 103 is smaller than the size of the cavity 101, which can be inclined within a certain angle (the specific angle can be determined according to the actual use) with the cavity 101, this design is to: when the child gets up, because its both sides are limited by the placement rack A2 and the placement rack B3, and then the child may change direction when getting up, and through this design, it can ensure that the fixed frame 5 and the placement plate 6 on it can also be adjusted in position within a certain range when the child gets up, wherein the stress plate 104 is provided with a telescopic piece 105 on both sides, and a slot 106 is arranged on both sides of the cavity 101 for sliding connection with the telescopic piece 105, and a plurality of resistance blocks two 107 are equidistantly arranged in the slot 106, wherein the telescopic piece 105 is in sliding state with the plurality of resistance blocks two 107, the resistance blocks two 107 are used to provide resistance when the child gets up, and the bottom of the stress plate 104 is connected with a rope 108, and the cavity 101 is also provided with a cavity 109 (the cavity 109 is located below the cavity 101), and the cavity 109 is provided with a driving plate 100 connected to the inner wall by sliding connection, the end of the rope 108 penetrates the inner wall of the cavity 101 and extends to one side of the driving plate 100, and the cavity 109 is also provided with a groove 11, and a return spring 111 is arranged in the groove 11, wherein one end of the return spring 111 is in contact with one side of the driving plate 100 (the other end is connected with the inner wall of the groove 11), and a tooth plate 112 is arranged on the driving plate 100, wherein the position adjusting unit 9 is arranged in the cavity 109.

[0041] As a further limitation of the application, the position adjusting unit 9 comprises a gear one 91 arranged inside the cavity 109, and a cylinder 92 is mounted on the gear one 91 for connection with the inner wall of the cavity 109, the gear one 91 is rotationally connected with the cylinder 92 and engages with the toothed plate 112, and a gear two 93 is further arranged inside the cavity 109 for engagement with the gear one 91, it is noted that the gear one 91 engages with the toothed plate 112 but does not engage with the gear two 93, wherein the size and the number of teeth of the gear one 91 are greater than those of the gear two 93, so as to achieve the purpose of speed change, and the end of the infusion rod 4 (located inside the fixed sleeve 7) is provided with a rod body 94 for rotational connection therebetween, and the rod body 94 successively penetrates the placement plate frame A2, the gear two 93 and the inner wall of the cavity 109 and extends to the outside, wherein the rod body 94 is slidingly connected with the gear two 93, and a sliding shaft 95 is arranged on the rod body 94, and a spiral lifting groove 96 is arranged inside the fixed sleeve 7 for sliding connection with the sliding shaft 95;

[0042] Specifically, when the child moves up due to restlessness, the arc-shaped positioning plate 81 and the arc-shaped positioning frame 82 are driven by the acting force to make the placement plate 6 ascend, so that the fixed frame 5 ascends synchronously, in the ascending process, the sliding plate body 103 drives the stressed plate 104 to ascend synchronously, in the ascending process of the stressed plate 104, the two sides of the stressed plate 104 pass through the resistance block two 107, the resistance block two 107 provides certain resistance when the child moves up, at the same time, under the action of the rope body 108, the driving plate 100 is directionally limited in the cavity 109, and in the movement process, the driving plate 100 compresses the return spring 111, at the same time, the toothed plate 112 on the driving plate 100 engages with the gear one 91 to make it rotate on the cylinder 92, and engages with the gear two 93, the gear two 93 is reversely driven by the engagement force to drive the rod body 94 to rotate, in the rotating process of the rod body 94, the sliding shaft 95 on the rod body 94 ascends along the spiral lifting groove 96 to drive the infusion rod 4 to ascend synchronously, so as to achieve the purpose of increasing the height of the infusion rod 4, and through the structural design of the application, on the one hand, the infusion site of the child can be limited during infusion, on the other hand, the position of the infusion rod 4 can be adjusted when the child suddenly moves up, so as to reduce the probability of backflow.

[0043] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. It is to be understood that the terms such as first and second, etc., merely are used to differentiate one from another without necessarily implying or requiring any actual relationship or order between them. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0044] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, many modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A seat for children infusion, comprising a seat, a placing plate frame A and a placing plate frame B symmetrically arranged on both sides of the seat, and an infusion rod arranged on the placing plate frame A, characterized in that: The placing plate frame A is provided with a fixed frame, and the fixed frame is provided with a placing plate for placing the elbow of a child. The positioning unit is arranged on the placing plate and is used for fixing the hand region of the child for infusion; The position adjusting unit is arranged inside the placing plate frame A and is used for adjusting the height of the infusion rod according to the infusion position, so that the position adjusting unit is used for preventing the bottle pressure from being reduced. The transmission unit is arranged inside the placing plate frame A and is used for driving the position adjusting unit to move according to the position of the fixed frame; the bottom of the placing plate is provided with a fixed seat, and the inside of the fixed frame is provided with a shaft body for rotating connection between the fixed seat; the bottom of the placing plate is also provided with a limiting seat, a guide column is installed on the limiting seat, and the inner walls of the two sides of the fixed frame are provided with guide grooves for sliding connection between the guide column and the guide grooves; a plurality of resistance blocks one are installed on the inner walls of the guide grooves.

2. A seat for children receiving an infusion according to claim 1, characterized in that: The transmission unit includes a cavity arranged inside the placing plate frame A, and the placing plate frame A is provided with a mounting plate frame on one side; the mounting plate frame is located on one side of the cavity; a sliding plate body is arranged inside the cavity; one end of the sliding plate body is connected to the bottom of the fixed frame; a stress plate is also arranged inside the cavity and is in sliding connection with the inner wall thereof; the stress plate is in rotating connection with the sliding plate body; a telescopic member is arranged on both sides of the stress plate; a slot is arranged on both sides of the cavity and is in sliding connection with the telescopic member; a plurality of resistance blocks two are equidistantly arranged inside the slot; the telescopic member is in sliding state with the plurality of resistance blocks two; a rope is connected to the bottom of the stress plate; a cavity is also arranged inside the cavity; a driving plate is arranged inside the cavity and is in sliding connection with the inner wall thereof; one end of the rope penetrates through the inner wall of the cavity and extends to one side of the driving plate; a groove is also arranged inside the cavity; a reset spring is arranged inside the groove; one end of the reset spring is in contact with one side of the driving plate; a toothed plate is arranged on the driving plate; the position adjusting unit is arranged inside the cavity. The positioning unit includes an arc-shaped positioning plate arranged on the placing plate; the arc-shaped positioning plate is located on one side of the placing plate and is in rotating connection with the inner wall thereof; and an arc-shaped positioning frame is arranged on the other side of the placing plate; a plurality of ratchet teeth are symmetrically arranged on the arc-shaped positioning plate and are equidistantly arranged on the arc-shaped positioning plate; the arc-shaped positioning frame is made of a flexible material.

3. A seat for infusion of a child according to claim 2, characterized in that: The arc-shaped positioning frame is internally symmetrically provided with a slide column, and the slide column is in sliding state with the ratchet teeth, so that the slide column is directionally and limitingly slid along the outer wall of the ratchet teeth, and a connecting seat is arranged on the slide column, and a spring body is connected between the connecting seat and the inner wall of the arc-shaped positioning frame, wherein one side of the connecting seat is connected with a penetrating column, and the end of the penetrating column penetrates the inner wall of the arc-shaped positioning frame and extends to the outside, and a pulling ring is arranged at the end of the penetrating column.

4. A seat for infusion of a child according to claim 3, characterized in that: The arc-shaped positioning frame is provided with a rubber frame.

5. The chair for infusion of a child of claim 1, wherein: The infusion rod penetrates the inner wall of the fixed sleeve and extends to the inside, and a rod body for rotationally connecting with the infusion rod is arranged at the end of the infusion rod, and the rod body penetrates the placing plate frame A, the gear two and the inner wall of the cavity in sequence and extends to the outside, wherein the rod body is slidably connected with the gear two, and a sliding shaft is arranged on the rod body, and a spiral lifting groove for slidably connecting with the sliding shaft is arranged in the fixed sleeve.

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