CN113967144B

CN113967144B - Children puncture bed

Info

Publication number: CN113967144B
Application number: CN202111190485.1A
Authority: CN
Inventors: 张猛; 戴晴; 吴成; 龙云
Original assignee: Anhui Children's Hospital
Current assignee: Anhui Children's Hospital
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2024-02-20
Anticipated expiration: 2041-10-13
Also published as: CN113967144A

Abstract

The invention discloses a children puncture bed, which comprises a bed board horizontally arranged left and right, a bed frame arranged outside the bed board and supporting legs arranged at the lower end of the bed frame, wherein the upper end of the bed board is provided with a through hole for fixing children, a pull belt which is in a U shape after being penetrated downwards is arranged in the through hole, the upper end of the pull belt is provided with a tray for preventing falling and propped against the upper side of the bed board, the upper end of the tray is provided with a bandage mechanism for fixing the bodies of the children, and the other end of the pull belt is connected with an elastic cloth which is arranged at the lower end of the adjacent side of the bed frame and used for providing elastic tension. The device also comprises a guide mechanism which is arranged at the lower ends of the drawstring and the bed board and used for keeping the drawstring in a U-shaped arrangement, and a speed control mechanism which can be clamped and fixed when the drawstring is pulled fast is arranged between the drawstring and the elastic cloth. When the child twists by a large margin, the drawstring moves fast, and the drawstring drives the guide plate to move downwards, so that the relative motion between the clamping plate and the guide plate is promoted due to the inertia effect, the clamping plate and the guide plate are overturned, and the clamping plate is clamped between the convex edges.

Description

Children puncture bed

Technical Field

The invention relates to the field of children puncture beds, in particular to a children puncture bed.

Background

For bone marrow puncture examination, considering operation safety and puncture success rate, the back upper ridge of the ilium of the infant is usually selected as a puncture point, so that a patient needs to have a fixed body position, a prone position is often selected, the child has the characteristics of the child, the infant often has fear psychology and cannot cooperate, and further the puncture difficulty is increased and the puncture success rate is reduced. For children bone marrow puncture, at least two or more medical staff are needed to fix the infant, the upper ridge puncture point is exposed after the ilium is exposed, the doctor is operated to puncture, and then another doctor performs bone marrow smear, so that at least three to four people are needed to complete the puncture. The existing puncture bed is only an ordinary sickbed, is not fixed to children, or is firm in fixation to children, has no toughness, and is strong in child restraint feeling, resistant to children, painful and short of humanoid care. The other has toughness, but when children twist hard, the body shake amplitude is large, the puncture is influenced, the puncture success rate is difficult to ensure, puncture damage, failure and marrow fluid dilution are easy to cause, and accurate marrow cytology examination or marrow biopsy cannot be achieved. Therefore, how to ensure that children can twist slightly and simultaneously limit quick twisting and ensure the success rate of puncture is a problem which needs to be solved by the technicians in the field.

Disclosure of Invention

The invention aims to provide a children puncture bed for solving the problems in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a children puncture bed, includes the bed board that horizontal setting about, sets up the bed frame in the bed board outside and installs the supporting leg in the bed frame lower extreme, fixed children's through-hole has been seted up to the upper end of bed board, and installs the stretching strap that is "U" after wearing out downwards in the through-hole, and the upper end of stretching strap is provided with the anticreep tray of supporting in the bed board upside, bandage mechanism that fixed children's health was used is installed to the upper end of tray, the other end of stretching strap is connected with the elastic cloth that provides elastic tension who installs near one side lower extreme at the bed frame.

The device also comprises a guide mechanism which is arranged at the lower ends of the drawstring and the bed board and used for keeping the drawstring in a U-shaped arrangement, and a speed control mechanism which can be clamped and fixed when the drawstring is pulled fast is arranged between the drawstring and the elastic cloth.

Preferably, the through holes comprise four limb mounting holes which are symmetrically arranged at the left side and the right side of the upper end of the bed plate and correspond to limbs, and four middle mounting holes which are symmetrically arranged at the middle part of the bed plate and correspond to waist and buttocks.

Preferably, the bandage mechanism comprises a front first bandage, a rear first bandage and a second bandage, wherein the front first bandage and the rear first bandage are fixed at the upper end of the tray at the upper side of the four limbs installation hole, the second bandage is arranged on the tray at the upper side of the middle installation hole, the two first bandages on the same tray are connected through a first magic tape, and the front second bandage and the rear second bandage are connected through a second magic tape.

Preferably, the guide mechanism comprises a horizontal transverse plate arranged at the bottom of the inner cavity of the draw strap, baffle plates for limiting the draw strap to slide outwards are fixed on the left side and the right side of the lower end of the transverse plate, and a vertical plate arranged at the lower end of the bed plate is fixed at the upper end of the transverse plate.

Preferably, the riser is sleeved with a sleeve plate which is matched with the riser and is convenient for adjusting the height of the transverse plate up and down, the upper end of the sleeve plate is fixed at the lower end of the bed plate, and the circumferential lower side of the sleeve plate is in threaded connection with a fastening knob of which the inner end is abutted against the riser.

Preferably, the speed control mechanism comprises a vertical guide plate fixed between the drawstring and the elastic cloth and a guide ring sleeved on the guide plate, the guide ring is installed at the bottom of the bed frame through connecting plates on two sides, the left end and the right end of the guide plate extending out of the guide ring are respectively hinged with a clamping plate inclining downwards, the left end and the right end of the guide plate are respectively connected with the clamping plate through torsion springs, the left end and the right end of the guide plate are respectively fixed with limiting plates for limiting after the clamping plate is overturned by a certain angle, the left end and the right end of the guide ring are respectively provided with downward locking plates, and the opposite ends of the two locking plates are respectively arranged at equal intervals and are respectively provided with convex edges which are convenient for the clamping plate to rotate by a certain angle and then are clamped in.

Preferably, the upper end of the locking plate is vertically fixed with a telescopic block pointing to the guide ring, the telescopic block is sleeved with an adaptive sleeve fixed on the guide ring, and the sleeve is connected with a bolt with an inner end propped against the telescopic block in a threaded manner.

Preferably, a horizontal supporting plate is fixed between the supporting legs, and an elastic telescopic mechanism is arranged between the tray and the bed plate so that the bed plate moves downwards after the child lies on the bed plate.

Preferably, the telescopic mechanism comprises a plurality of guide posts with square sections, wherein the guide posts are fixed on the supporting plate at equal intervals, the guide posts are sleeved with adaptive guide sleeves which can move up and down and stretch out and are fixed at the lower end of the bed plate, and the guide posts are connected with the top wall of the inner cavity of the guide sleeve through a plurality of springs.

Preferably, the bed board is provided with a foam cushion, and the tray is positioned on the upper side of the foam cushion.

Compared with the prior art, the invention has the beneficial effects that:

1. the children lie prone on the bed board, four limbs stretch, pull the second bandage to fix waist and buttocks, the second magic tape is convenient to fix and adjust tightness, then pull the first bandage, the four limbs are fixed, the first magic tape is convenient to fix and adjust tightness, here, two first bandages are fixed on the same tray, gaps are avoided between the first bandages and the four limbs when the children are twisted, fixing effect is good, the tray is connected with a drawstring, and elastic cloth is arranged between the drawstring and a bed frame, so that when the children are twisted, a certain amount of activity is achieved, the constraint feeling is reduced, the children are more comfortable, when the children are twisted greatly, the drawstring moves rapidly, the drawstring drives the guide plate to move downwards, due to inertia effect, the clamping plate is not too fast to move, so that the clamping plate is enabled to move relatively between the guide plate to generate overturning, then the clamping plate is clamped between two upper and lower adjacent convex ridges, and the limiting plate on the rear side is also limited to be overturned, thereby locking is limited, the children are limited to twist or shake fast, normal puncture is guaranteed, and when the children or the elastic cloth is twisted, and when the children are twisted, the waist is returned, the tension is reduced, and the torsion spring is operated;

2. the telescopic block can be pulled by unscrewing the bolt, so that the distance between the locking plate and the clamping plate as well as the convex edge can be adjusted, and the sensitivity can be adjusted;

3. the fastening knob is unscrewed, so that the vertical plate can be pulled up and down, the initial tension of the elastic cloth is changed, and flexible adjustment can be carried out according to the requirement;

4. after the child lies on the bed board, the springs are compressed, the bed board moves downwards, the bed board drives the vertical plate to move downwards, the transverse plate drives the pull belt to pull downwards, the pull belt drives the elastic cloth to stretch, thus, the initial tension of the elastic cloth is different for children with different weights, the generated initial tension is different, the initial tension is automatically adjusted, and the use is more convenient.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a left side view of the present invention;

FIG. 5 is a first isometric view of the invention;

FIG. 6 is a second isometric view of the invention;

FIG. 7 is an exploded view of the present invention;

FIG. 8 is a schematic view of the connection structure of the drawstring and the elastic cloth of the present invention;

FIG. 9 is a right side view of the attachment of the drawstring to the elastic panel of the present invention;

fig. 10 is an isometric view of the attachment of the drawstring to the elastic panel of the present invention.

In the figure: 1. a bed board; 11. a bed frame; 12. support legs; 13. a sponge cushion; 2. a tray; 21. four limbs mounting holes; 22. a middle mounting hole; 23. a first bandage; 24. a second bandage; 25. a first magic tape; 26. the second magic tape; 3. pulling a belt; 31. an elastic cloth; 32. a cross plate; 33. a baffle; 34. a riser; 35. a sleeve plate; 4. a guide plate; 41. a guide ring; 42. a connecting plate; 43. a clamping plate; 44. a torsion spring; 45. a limiting plate; 46. a locking plate; 47. protruding ridges; 48. a telescopic block; 49. a sleeve; 5. a supporting plate; 51. a guide post; 52. a guide sleeve; 53. and (3) a spring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 10, the present invention provides a technical solution for a puncture bed for children: the utility model provides a children puncture bed, including horizontal bed board 1 that sets up about, set up the bed frame 11 in the bed board 1 outside and install the supporting leg 12 at bed frame 11 lower extreme, fixed children's through-hole has been seted up to bed board 1's upper end, and install in the through-hole and wear out the back downwards and be "U" type stretching strap 3, the upper end of stretching strap 3 is provided with the anticreep tray 2 that supports in bed board 1 upside, the bandage mechanism that fixed children's health was used is installed to tray 2's upper end, the other end of stretching strap 3 is connected with the elastic cloth 31 that provides elastic tension who installs near one side lower extreme at bed frame 11. The bandage mechanism is used for fixing buttocks, waist and limbs of a child, the puncture part is between the buttocks and the waist, the elastic cloth 31 has elasticity, and can promote the child to buffer when slightly moving, reduce the constraint feeling and make the child feel more comfortable. A foam cushion 13 is arranged on the bed board 1, and the tray 2 is positioned on the upper side of the foam cushion 13. The child is more comfortable lying on the baby.

The through holes comprise four limb mounting holes 21 which are symmetrically arranged at the left side and the right side of the upper end of the bed plate 1 and correspond to limbs, and four middle mounting holes 22 which are symmetrically arranged at the middle part of the bed plate 1 and correspond to the waist and the buttocks. The four limbs mounting hole 21 and the middle mounting hole 22 can be corresponding to the drawstring 3 in a long strip shape, the drawstring 3 is not easy to be too narrow, stable pulling is ensured, 4-8 cm can be adopted, and the material can be the material of a safety belt on an automobile. The positions of the four limbs mounting holes 21 corresponding to the four limbs can be flexibly adjusted according to the needs in actual production, and the front and rear parts of the middle mounting holes 22 are respectively provided with the buttocks and the waist. The bandage mechanism comprises a front first bandage 23 and a rear first bandage 23 which are fixed at the upper end of the tray 2 on the upper side of the four limbs installation hole 21 and a second bandage 24 which is arranged on the tray 2 on the upper side of the middle installation hole 22, wherein the two first bandages 23 on the same tray 2 are connected through a first magic tape 25, and the front second bandage 24 and the rear second bandage 24 are connected through a second magic tape 26. The number of the first bandages 23 corresponding to the four limbs mounting holes 21 is two, so that the fixing effect on children is good, gaps are not easy to be formed when the fixing device is pulled, and the fixing on the waist and the buttocks is that the front side and the rear side are pulled together, that is, the number of the second bandages 24 corresponding to the middle mounting holes 22 is one.

The device also comprises a guide mechanism which is arranged at the lower ends of the drawstring 3 and the bed board 1 and used for keeping the drawstring 3 in a U-shaped arrangement, and a speed control mechanism which can be locked and fixed when the drawstring 3 is pulled rapidly is arranged between the drawstring 3 and the elastic cloth 31. The guiding mechanism ensures that the pull belt 3 moves normally and cannot be clamped, and simultaneously, the two ends of the pull belt 3 are ensured to be in a vertical state. The speed control mechanism is matched with the elastic cloth 31 for use, the elastic cloth 31 can allow children to slowly move for a certain distance, so that comfort level is guaranteed, the speed control mechanism is capable of preventing the children from shaking greatly and being blocked, and accordingly normal puncture is guaranteed.

The guide mechanism comprises a horizontal transverse plate 32 arranged at the bottom of the inner cavity of the draw tape 3, baffle plates 33 for limiting the draw tape 3 to slide outwards are fixed on the left side and the right side of the lower end of the transverse plate 32, and a vertical plate 34 arranged at the lower end of the bed plate 1 is fixed at the upper end of the transverse plate 32. The combination of the cross plate 32 and the baffle 33 may be replaced by a flat tube shape, and the upper vertical plate 34 may be rod-shaped. The riser 34 is sleeved with a sleeve plate 35 which is matched and is convenient for adjusting the height of the transverse plate 32 up and down, the upper end of the sleeve plate 35 is fixed at the lower end of the bed plate 1, and the lower side of the circumference of the sleeve plate 35 is connected with a fastening knob with the inner end propped against the riser 34 in a threaded manner. The fastening knob is unscrewed, so that the vertical plate 34 can be pulled up and down, the initial tension of the elastic cloth 31 is changed, and flexible adjustment can be performed as required.

The speed control mechanism comprises a vertical guide plate 4 fixed between a pull belt 3 and an elastic cloth 31 and a guide ring 41 sleeved on the guide plate 4, wherein the guide ring 41 is installed at the bottom of a bed frame 11 through connecting plates 42 on two sides, the left end and the right end of the guide plate 4, which extend out of the guide ring 41, are respectively hinged with a clamping plate 43 inclining downwards, the left end and the right end of the guide plate 4 are respectively connected with the guide plate 4 through torsion springs 44, the left end and the right end of the guide plate 4 are respectively fixed with limiting plates 45 limiting after the clamping plate 43 is overturned by a certain angle, the left end and the right end of the guide ring 41 are respectively provided with downward locking plates 46, and the opposite ends of the two locking plates 46 are respectively provided with convex ribs 47 which are arranged at equal intervals and are convenient for the clamping plate 43 to rotate by a certain angle and then to be clamped in. When the moving speed of the child is too high, the tray 2 moves quickly upwards, the pull belt 3 is pulled, the guide plate 4 is driven to move quickly downwards, the clamping plate 43 does not move too fast due to the action of inertia, the clamping plate 43 and the guide plate 4 are driven to move relatively, overturning is generated, then the clamping plate is clamped between two upper and lower adjacent convex ridges 47, the limiting plate 45 on the rear side also limits the clamping plate 43 to continuously overturn, locking is achieved, when the limbs or the waist of the child returns, the guide plate 4 moves upwards under the elastic tension of the elastic cloth 31, the clamping plate 43 returns under the action of the torsion spring 44, the clamping plate 43 can be heavier, and the inertia is larger. The speed control mechanism can also be similar to an automobile safety belt, and the speed can be blocked when the speed is too high.

The upper end of the locking plate 46 is vertically fixed with a telescopic block 48 pointing to the guide ring 41, and the telescopic block 48 is sleeved with an adaptive sleeve 49 fixed on the guide ring 41, and the sleeve 49 is in threaded connection with a bolt with the inner end abutting against the telescopic block 48. The telescopic block 48 can be pulled by unscrewing the bolt, so that the distance between the locking plate 46 and the clamping plate 43 and the convex edge 47 can be adjusted, the sensitivity can be adjusted, a safety gap is reserved between the normal clamping plate 43 and the convex edge 47, and when the pull belt 3 is slowly pulled, the clamping plate 43 can be turned over in a certain range and cannot be blocked, the sensitivity can be reflected by the distance, and the smaller the distance is, the easier the locking is.

A horizontal supporting plate 5 is fixed between the supporting legs 12, and an elastic telescopic mechanism is arranged between the supporting plate 5 and the bed plate 1 so that the bed plate 1 moves downwards after the child lies on the bed. The bed board 1 can downwards stretch out the bed frame 11, separate, after children lie on, the bed board 1 moves down, because the one end that the stretching strap 3 is close to the bed frame 11 is fixed, therefore, the elastic cloth 31 can be stretched, initial pulling force changes, heavier children, the pulling force that produces is greater, the constraint effect is better like this, because heavier children, often the strength is also greater, the initial constraint force that needs is also greater, the constraint force can be changed along with children's weight automatically like this, say 30 jin of children and 60 jin of children, the strength difference is just bigger. The telescopic mechanism comprises a plurality of upward square-section guide posts 51 fixed on the supporting plate 5 at equal intervals, and the guide posts 51 are sleeved with a matched guide sleeve 52 which can move up and down and is telescopic and fixed at the lower end of the bed plate 1, and the guide posts 51 are connected with the top wall of the inner cavity of the guide sleeve 52 through a plurality of springs 53. After the child lies on the bed, the springs 53 are compressed, the bed board 1 moves downwards, the bed board 1 drives the vertical plate 34 to move downwards, the transverse plate 32 drives the pull belt 3 to pull downwards, and the pull belt 3 drives the elastic cloth 31 to stretch, so that the initial tension of the elastic cloth 31 is different for children with different weights, the generated initial tension is different, and the initial tension is automatically adjusted, so that the child bed is more convenient to use.

Working principle: the children lie prone on bed board 1, four limbs stretch, pulling second bandage 24 is fixed waist and buttock, second magic subsides 26 conveniently fix and adjust elasticity, then the first bandage 23 of pulling, realize the fixed of four limbs, first magic subsides 25 are convenient fixed and adjust elasticity, here, two first bandages 23 are fixed on same tray 2, produce the clearance between first bandage 23 and the four limbs when avoiding the twisting, fixed effectual, this tray 2 has connected stretching strap 3, set up elasticity cloth 31 between stretching strap 3 and the bed frame 11, therefore, when children twist, there is certain activity, the constraint sense has been reduced, more comfortable, and when children twist by a wide margin, stretching strap 3 fast-moving, the deflector 4 is driven to move down to the stretching strap 3, because of inertial effect, cardboard 43 is come not in reach the motion, thereby impel the relative motion between cardboard 43 and the deflector 4, produce the upset, then the card is gone into between two protruding ridges 47 about, and the limiting plate 45 of rear side also restricts cardboard 43 and continues to overturn, thereby realize locking, restriction of children has reduced constraint and has bound the sense, more comfortable, and the elastic force of the cardboard is moved down at the lower side of the deflector 43, when the doctor moves down normally, the elasticity is guaranteed to pierce the lower tension, and the waist is moved down, the elastic force of the torsional spring is reduced, when the waist is moved down, and the waist is moved down, the elastic force of the four limbs is guaranteed, and the waist is moved, and the elasticity is reduced. The telescopic block 48 can be pulled by unscrewing the bolt, so that the distance between the locking plate 46 and the clamping plate 43 and the convex edge 47 can be adjusted, and the sensitivity can be adjusted. The fastening knob is unscrewed, the vertical plate 34 can be pulled up and down, so that the initial tension of the elastic cloth 31 is changed, the flexible adjustment can be carried out according to the needs, after a child lies on the bed plate 1, the spring 53 is compressed, the bed plate 1 moves down, the bed plate 1 drives the vertical plate 34 to move down, the transverse plate 32 drives the pull belt 3 to pull down, and the pull belt 3 drives the elastic cloth 31 to stretch, so that the initial tension of the elastic cloth 31 is different for children with different weights, the generated initial tension is different, the initial tension is automatically adjusted, and the use is more convenient.

Although embodiments of the present 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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a children's puncture bed, includes bed board (1) that horizontal setting about, sets up bed frame (11) in the bed board (1) outside and installs supporting leg (12) at bed frame (11) lower extreme, its characterized in that: the child-fixing bed is characterized in that a through hole for fixing a child is formed in the upper end of the bed plate (1), a pull belt (3) which penetrates downwards and then is U-shaped is arranged in the through hole, an anti-falling tray (2) propped against the upper side of the bed plate (1) is arranged at the upper end of the pull belt (3), a bandage mechanism for fixing the body of the child is arranged at the upper end of the tray (2), and an elastic cloth (31) which is arranged at the lower end of one side, close to the bed frame (11) and used for providing elastic tension is connected to the other end of the pull belt (3);

the through holes comprise four limb mounting holes (21) which are symmetrically arranged at the left side and the right side of the upper end of the bed plate (1) and correspond to limbs, and four middle mounting holes (22) which are symmetrically arranged at the middle part of the bed plate (1) and correspond to the waist and the buttocks;

the device also comprises a guide mechanism which is arranged at the lower ends of the drawstring (3) and the bed board (1) and used for keeping the drawstring (3) in a U-shaped arrangement, and a speed control mechanism which can be blocked and fixed when the drawstring (3) is pulled rapidly is arranged between the drawstring (3) and the elastic cloth (31);

the bandage mechanism comprises a front first bandage (23) and a rear first bandage (24) which are fixed at the upper end of the tray (2) at the upper side of the four limbs mounting hole (21) and a second bandage (24) which is arranged on the tray (2) at the upper side of the middle mounting hole (22), wherein the two first bandages (23) on the same tray (2) are connected through a first magic tape (25), and the front second bandage and the rear second bandage (24) are connected through a second magic tape (26);

the guide mechanism comprises a horizontal transverse plate (32) arranged at the bottom of the inner cavity of the drawstring (3), baffle plates (33) for limiting the drawstring (3) to slide outwards are fixed on the left side and the right side of the lower end of the transverse plate (32), and a vertical plate (34) arranged at the lower end of the bed plate (1) is fixed at the upper end of the transverse plate (32);

the speed control mechanism comprises a vertical guide plate (4) fixed between a drawstring (3) and an elastic cloth (31) and a guide ring (41) sleeved on the guide plate (4) in a matched mode, the guide ring (41) is installed at the bottom of a bed frame (11) through connecting plates (42) on two sides, clamping plates (43) which are inclined downwards are hinged to the left end and the right end of the guide plate (4) after the guide plate (41) stretches out of the guide ring respectively, the clamping plates (43) are connected with the guide plate (4) through torsion springs (44), limiting plates (45) which are used for limiting after the clamping plates (43) are turned over by a certain angle are respectively fixed at the left end and the right end of the guide plate (4), downward locking plates (46) are respectively installed at the left end and the right end of each guide ring (41), and one end, which is opposite to each locking plate (46) is arranged at equal intervals, of the clamping plates (43) is convenient to rotate by a certain angle and then are clamped in convex edges (47);

a horizontal supporting plate (5) is fixed between the supporting legs (12), and an elastic telescopic mechanism is arranged between the supporting plate (5) and the bed plate (1) so that the bed plate (1) moves downwards after the child lies on the bed plate;

the telescopic mechanism comprises a plurality of upward guide posts (51) with square sections, wherein the guide posts (51) are fixed on a supporting plate (5) at equal intervals, the guide posts (51) are sleeved with guide sleeves (52) which can move up and down and stretch out and fix the guide posts at the lower end of the bed plate (1) in a matched mode, and the guide posts (51) are connected with the top wall of an inner cavity of the guide sleeve (52) through a plurality of springs (53).

2. A child puncture bed according to claim 1, characterized in that: the vertical plate (34) is sleeved with a sleeve plate (35) which is matched with the vertical plate and is convenient for adjusting the height of the transverse plate (32) up and down, the upper end of the sleeve plate (35) is fixed at the lower end of the bed plate (1), and the fastening knob of which the inner end is abutted to the vertical plate (34) is connected with the lower side of the periphery of the sleeve plate (35) in a threaded manner.

3. A child puncture bed according to claim 1, characterized in that: the upper end of the locking plate (46) is vertically fixed with a telescopic block (48) pointing to the guide ring (41), the telescopic block (48) is sleeved with an adaptive sleeve (49) fixed on the guide ring (41), and the sleeve (49) is connected with a bolt with the inner end propped against the telescopic block (48) in a threaded manner.

4. A child puncture bed according to claim 1, characterized in that: the bed board (1) is provided with a foam cushion (13), and the tray (2) is positioned on the upper side of the foam cushion (13).