A fixed bed for puncture of children with variable restraint force

Abstract

The present invention discloses a fixed bed for puncture of children with variable restraint force, comprising a bed frame, bed legs installed at the lower end of the bed frame, a support plate installed between the bed legs, and a bed board located in the bed frame and capable of moving up and down, wherein the bed board and the support plate are connected by an elastic telescopic mechanism so as to move downward vertically when under pressure. The upper end of the bed board is recessed to form a restraint groove corresponding to the human figure, and the restraint groove includes a limb groove, a body trunk groove, and a head groove, and the two hands are slightly opened to both sides for easy fixation, and an inverted "U"-shaped bracket is installed at the upper end of the bed frame, and an electric push rod is installed on the bracket, and the telescopic rod of the electric push rod is connected to a horizontal "I"-shaped pressing plate after extending downward from the bracket, and the pressing plate is in the shape of a shell with a hollow interior, and the four ends of the pressing plate are opened and connected to a piston cylinder, and a pressure mechanism capable of generating a constant pressure on the patient through gas is installed in the piston cylinder. A pressure adjustment mechanism arranged between the piston cylinder and the bed frame is also included.

Description

Technical Field

[0001] The invention relates to the field of a fixed bed for puncture of children, in particular to a fixed bed for puncture of children with variable restraining force. Background Art

[0002] For bone marrow puncture examination, considering the safety of operation and the success rate of puncture, the posterior superior iliac crest of the child is usually selected as the puncture point. This requires the patient to have a fixed position, often the prone position. Children have their own characteristics, and children are often afraid and unable to cooperate, which increases the difficulty of puncture and reduces the success rate of puncture. For children's bone marrow puncture, at least two or more medical staff are required to fix the child, expose the posterior superior iliac crest puncture point, the operating doctor performs the puncture, and another doctor performs a bone marrow smear. In this way, at least three to four people are required to complete the puncture. The existing puncture bed is only an ordinary hospital bed, which is not fixed for children, or the fixation of children is relatively strong and not tough, causing children to feel restrained. Children are more resistant and in great pain, and lack humanistic care. The other type is tough, but when children twist their bodies hard, their bodies will shake violently, affecting the puncture and making it difficult to ensure the success rate of the puncture. It is easy to cause puncture damage, failure, and dilution of the bone marrow fluid, making it impossible to achieve accurate bone marrow cytology or bone marrow biopsy. If constant pressure is achieved, the fixation effect will be better. However, as the weight of the child increases, the strength will also increase, and the fixation effect of this constant pressure will decrease. Therefore, how to achieve constant pressure while increasing the pressure as the child's weight increases to adapt to children of different weights is an urgent problem that technicians in this field need to solve. Summary of the invention

[0003] The object of the present invention is to provide a fixed bed for puncture of children with variable restraint force, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a fixed bed for puncture of children with variable restraint force, comprising a bed frame, bed legs installed at the lower end of the bed frame, a support plate installed between the bed legs, and a bed board located in the bed frame and capable of moving up and down, wherein the bed board and the support plate are connected by an elastic telescopic mechanism so as to move vertically downward when under pressure. The telescopic mechanism can move downward under pressure, and the descending distance of children with different weights is different, and the heavier the child, the more the child descends.

[0005] The upper end of the bed board is concave to form a restraint groove corresponding to the human shape, which includes limb grooves, trunk grooves and head grooves. The two hands are slightly opened to both sides for easy fixation. An inverted "U"-shaped bracket is installed on the upper end of the bed frame. An electric push rod is installed on the bracket. The telescopic rod of the electric push rod extends downward from the bracket and is connected to a horizontal "I"-shaped pressing plate. The pressing plate is in the shape of a shell with a hollow interior. The four ends of the pressing plate are opened for ventilation, and the four openings of the pressing plate are respectively connected to a piston cylinder with a square cross-section at the lower end opening. A pressure mechanism that can generate constant pressure on the patient through gas is installed in the piston cylinder. The pressure mechanism generates constant pressure. When the child moves, the pressure is inconvenient, which ensures that the pressure on the child is not too great and the child will not be injured when moving. While being fixed, it has a certain toughness and ensures constant pressure.

[0006] The device also includes a pressure adjustment mechanism disposed between the piston cylinder and the bed frame, which can increase the pressure as the bed board moves downward to cope with heavier patients. The pressure adjustment mechanism can be changed according to the weight of the patient, and the pressure is greater for heavier patients to ensure restraint.

[0007] Preferably, the telescopic mechanism comprises a guide rod with a square cross section fixed to the upper end of the support plate and a matching sleeve sleeved on the guide rod, the upper end of the guide rod is connected to the top of the inner cavity of the sleeve through a first spring, and the upper end of the sleeve is fixed to the lower end of the bed plate. The guide rod and the sleeve play a guiding role, and the first spring plays an elastic support role.

[0008] Preferably, the circumference of the bed board extends downward to form a frame-shaped guide portion to avoid pinching the patient and avoid a gap between the bed board and the bed frame. Under the action of the guide portion, no gap is generated.

[0009] Preferably, the pressure mechanism includes an anti-slipping portion extending inward and downward from the lower end of the piston cylinder to form a cylindrical anti-slipping portion with a square cross section and a piston rod inserted in the anti-slipping portion, an anti-slipping block is fixed to the upper end of the piston rod, the lower ends of the four piston rods are connected by a bandage that can be pressed on the patient, and an operating port for puncture is provided on the bandage, the pressure plate is connected to an air pump that provides pressure and a safety valve mechanism for exhaust, and the air pump is connected to a switch installed on the bracket. The air pump provides a continuous flow of gas, which is injected into the piston cylinder. When the set pressure is reached, the safety valve mechanism opens and the gas is discharged, thereby ensuring the pressure, ensuring the pressure in the piston cylinder, and ensuring the constant pressure of the piston rod, thereby ensuring the constant pressure on the child.

[0010] Preferably, the safety valve mechanism includes a safety cylinder with an upper opening fixed to the right end of the bed frame and a lower piston block located in the safety cylinder, the lower end of the safety cylinder is connected to the pressure plate via a soft conduit, and an exhaust hole located on the upper side of the lower piston block is opened on the circumference of the safety cylinder, and the upper end of the lower piston block is connected to a second spring. When the lower piston block moves to the exhaust hole, gas is discharged from the exhaust hole to prevent the pressure from continuing to increase and ensure constant pressure.

[0011] Preferably, the pressure adjustment mechanism includes an upper piston block installed inside the safety cylinder, and the upper end of the second spring is fixed to the lower end of the upper piston block, and the upper piston block is fixed to the bed board through an "L"-shaped connecting rod. The connecting rod includes a vertical part and a horizontal part, the vertical part is located in the safety cylinder and connected to the upper piston block, and the horizontal part is fixed to the bed board. The heavier the child, the greater the distance the bed board descends, the greater the distance the upper piston block descends, the greater the pressure of the second spring, and the greater the pressure required when reaching the exhaust hole. In this way, the pressure of the piston cylinder will increase with the weight of the child, and the pressure on the child will also increase.

[0012] Preferably, the bed board is in an arc shape with a convex middle part to facilitate the bandage to press down from the front and back sides. After the convex part, the distance of the front and back sides pressing down increases, which is more convenient for fixing. At the same time, it is also convenient to separate the arm from the body. When fixing in this way, there will be no height difference to cause the arm to shake. If the arm and the body are too close and then fixed horizontally, there will be a gap between the arm and the body, which is easy to shake. After the middle part of the bed board is convex, the bandage will be bent and fixed, avoiding the gap between the arm and the body, not easy to shake, and the restraint effect is better.

[0013] Preferably, a rotating rod is rotatably connected between the lower ends of the left and right piston rods, and the bandage is fixed on the rotating rod. The rotating rod passes through the piston rod to the right and is fixed with front and rear stoppers, and the stoppers are plugged with front and rear stopper rods that penetrate left and right. The two stopper rods are located at the front and rear sides of the piston rod, and the right ends of the two stopper rods are connected by a pull plate, and the pull plate and the stopper are connected by a third spring sleeved on the stopper rod. When the stopper rod is pulled out to the right and extends out of the piston rod to the right, the bandage can be rotated to change the tightness and tension.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When in use, the child lies in the restraint groove, and the button on the electric push rod is used to control the telescopic rod to move downward. The pressure plate drives the piston cylinder to move downward. After it drops to a certain level, the bandage approaches the child, and the air pump is started by the switch. The piston cylinder is inflated and the piston rod moves downward, so that the bandage is put on the child, covering the body trunk and limbs, with the head exposed. The pressure plate is connected to the safety cylinder through the catheter, and the lower piston block moves upward to compress the second spring, and then exhausts from the exhaust hole to ensure constant pressure. Here, the restraint groove restricts the child from shaking, and the bandage gives the child a certain constant restraint force. The constant pressure ensures a similar restraint force, and also has a certain toughness, which plays a protective role.

[0016] 2. The child drives the bed board down. The heavier the child is, the more the bed board moves down. The bed board drives the upper piston block down through the connecting rod, thereby increasing the pressure of the second spring, the pressure of the piston cylinder, and the pressure of the bandage. The heavier the child is, the greater the restraint force is. In this way, the pressure will be automatically changed according to the weight of different children. The heavier the child is, the greater the restraint force is, and the better the fixation effect is.

[0017] 3. After the puncture is completed, the air pump stops pumping air or performs reverse pumping through the switch, and then the electric push rod moves up to release the fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a front view of the present invention;

[0020] Figure 3 A top view of the present invention;

[0021] Figure 4 is a first isometric view of the present invention;

[0022] Figure 5 is a second isometric view of the present invention;

[0023] Figure 6 An exploded view of the present invention;

[0024] Figure 7 It is a schematic diagram of the connection between the piston rod and the piston cylinder of the present invention.

[0025] In the figure: 1. bed frame; 11. bed legs; 12. support plate; 13. bed board; 14. guide rod; 15. sleeve; 16. first spring; 2. restraint groove; 21. bracket; 22. electric push rod; 23. pressure plate; 24. piston cylinder; 25. anti-slip part; 26. piston rod; 27. bandage; 28. operating port; 29. ​​air pump; 291. switch; 3. safety cylinder; 31. lower piston block; 32. conduit; 33. exhaust hole; 34. second spring; 35. upper piston block; 36. connecting rod; 4. rotating rod; 41. block; 42. stop rod; 43. pull plate; 44. third spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 7 The present invention provides a technical solution for a fixed bed for puncture of children with variable restraint force: a fixed bed for puncture of children with variable restraint force, comprising a bed frame 1, bed legs 11 installed at the lower end of the bed frame 1, a support plate 12 installed between the bed legs 11, and a bed board 13 located in the bed frame 1 and capable of moving up and down, wherein the bed board 13 and the support plate 12 are connected by an elastic telescopic mechanism so as to move vertically downward when under pressure. The telescopic mechanism can move downward under pressure, and the descending distance of children with different weights is different, and the heavier the child, the more it descends. The telescopic mechanism comprises a guide rod 14 with a square cross-section fixed to the upper end of the support plate 12 and a matching sleeve 15 sleeved on the guide rod 14, the upper end of the guide rod 14 is connected to the top of the inner cavity of the sleeve 15 by a first spring 16, and the upper end of the sleeve 15 is fixed to the lower end of the bed board 13. The guide rod 14 and the sleeve 15 play a guiding role, and the first spring 16 plays an elastic support role.

[0028] The upper end of the bed board 13 is concave to form a restraint groove 2 corresponding to the human figure. The restraint groove 2 includes limb grooves, trunk grooves and head grooves. The two hands are slightly opened to both sides for easy fixation. The upper end of the bed frame 1 is installed with an inverted "U"-shaped bracket 21. The bracket 21 is installed with an electric push rod 22. The telescopic rod of the electric push rod 22 extends downward from the bracket 21 and is connected to a horizontal "I"-shaped pressing plate 23. The pressing plate 23 is in the shape of a shell with a hollow interior. The four ends of the pressing plate 23 are opened for ventilation. The four openings of the pressing plate 23 are respectively connected to a piston cylinder 24 with a square cross-section at the lower end opening. A pressure mechanism capable of generating constant pressure on the patient through gas is installed in the piston cylinder 24. The pressure mechanism generates constant pressure. When the child moves, the pressure is not inconvenient. This ensures that the pressure on the child is not too great and the child will not be injured when moving. While being fixed, it has a certain toughness and ensures constant pressure. The circumference of the bed board 13 extends downward to form a frame-shaped guide portion to avoid clamping the patient. Avoiding the formation of a gap between the bed board 13 and the bed frame 1, due to the action of the guide part, no gap will be generated.

[0029] It also includes a pressure adjustment mechanism disposed between the piston cylinder 24 and the bed frame 1, which can increase the pressure as the bed board 13 moves downward to cope with heavier patients. The pressure adjustment mechanism can be changed according to the weight of the child, and the pressure is greater for heavier patients to ensure restraint.

[0030] The pressure mechanism includes an anti-slip portion 25 extending inward and downward from the lower end of the piston cylinder 24 to form a cylindrical anti-slip portion with a square cross-section, and a piston rod 26 inserted in the anti-slip portion 25. An anti-slip block is fixed to the upper end of the piston rod 26 for anti-slipping. The diameter of the anti-slip block is larger than the anti-slip portion 25, so that it will not slip out when moving downward. At the same time, a sealing ring sleeved on the piston rod 26 is fixed to the lower end of the anti-slip portion 25 to increase the sealing performance. When the piston cylinder 24 generates pressure, the surrounding areas are offset accordingly, so that only the pressure on the upper side drives the piston rod 26 to move up and down. The lower ends of the four piston rods 26 are connected by a bandage 27 that can be pressed on the patient. The bandage 27 is provided with an operating port 28 for puncture. The pressure plate 23 is connected to an air pump 29 for providing pressure and a safety valve mechanism for exhaust. The air pump 29 is connected to a switch 291 installed on a bracket. The air pump 29 provides a continuous flow of gas, which is injected into the piston cylinder 24. When the set pressure is reached, the safety valve mechanism opens and the gas is discharged, thereby ensuring the pressure, ensuring the pressure in the piston cylinder 24, and ensuring that the pressure of the piston rod 26 is constant, thereby ensuring constant pressure on the child.

[0031] The lower ends of the left and right piston rods 26 are connected to a rotating rod 4, and the bandage 27 is fixed on the rotating rod 4. The rotating rod 4 passes through the piston rod 26 to the right and is fixed with a stopper 41 arranged in front and back. The stopper 41 is plugged with two stopper rods 42 passing through the left and right. The two stopper rods 42 are located at the front and back sides of the piston rod 26, and the right ends of the two stopper rods 42 are connected by a pull plate 43. The pull plate 43 and the stopper 41 are connected by a third spring 44 sleeved on the stopper rod 42. The stopper rod 42 is pulled out to the right, and the stopper rod 42 extends out of the piston rod 26 to the right, so that the bandage 27 can be rotated, the tightness can be changed, and the tension can be changed.

[0032] The safety valve mechanism includes a safety cylinder 3 with an upper opening fixed to the right end of the bed frame 1 and a lower piston block 31 located in the safety cylinder 3. The lower end of the safety cylinder 3 is connected to the pressure plate 23 via a soft conduit 32, and an exhaust hole 33 located on the upper side of the lower piston block 31 is opened on the circumference of the safety cylinder 3. The upper end of the lower piston block 31 is connected to a second spring 34. When the lower piston block 31 moves to the exhaust hole 33, the gas is discharged from the exhaust hole 33 to prevent the pressure from continuing to increase and ensure constant pressure.

[0033] The pressure adjustment mechanism includes an upper piston block 35 installed inside the safety cylinder 3, and the upper end of the second spring 34 is fixed to the lower end of the upper piston block 35, and the upper piston block 35 is fixed to the bed board 13 through an "L"-shaped connecting rod 36. The connecting rod 36 includes a vertical part and a horizontal part. The vertical part is located in the safety cylinder 3 and connected to the upper piston block 35, and the horizontal part is fixed to the bed board 13. The heavier the child, the greater the distance the bed board 13 descends, and the greater the distance the upper piston block 35 descends. The greater the pressure of the second spring 34, the greater the pressure required when reaching the exhaust hole 33, so that the pressure of the piston cylinder 24 will increase with the weight of the child, and the pressure on the child will also increase. The bed board 13 is in an arc shape with a convex upper middle part to facilitate the bandage 27 to press down from the front and back sides. After the upper convexity, the downward pressure distance of the front and rear sides increases, which is more convenient for fixation. At the same time, it is also convenient to separate the arm from the body. When fixed in this way, there will be no height difference to cause the arm to shake. If the arm and the body are too close and then fixed horizontally, there will be a gap between the arm and the body, which is easy to shake. After the middle part of the bed board 13 is convex, the bandage 27 will be bent and fixed, avoiding the gap between the arm and the body, not easy to shake, and the restraint effect is better.

[0034] Working principle: When in use, the child lies in the restraint groove 2, and the button on the electric push rod 22 is used to control the telescopic rod to move downward, and the pressure plate 23 drives the piston cylinder 24 to move downward. After it drops to a certain level, the bandage 27 approaches the child, and the air pump 29 is started through the switch 291, the piston cylinder 24 is inflated, and the piston rod 26 moves downward, so that the bandage 27 is put on the child, covering the body trunk and limbs, with the head exposed. The pressure plate 23 is connected to the safety cylinder 3 through the conduit 32, and the lower piston block 31 moves upward to compress the second spring 34, and then the air is exhausted from the exhaust hole 33, so as to ensure constant pressure. Here, the restraint groove 2 restricts the child from shaking, and the bandage 27 gives the child a certain constant restraining force. The pressure is constant, which ensures a kind of restraining force, and it also has a certain toughness, which plays a protective role. The child drives the bed plate 13 downward. The heavier the child is, the more the child descends. The bed plate 13 drives the upper piston block 35 downward through the connecting rod 36, thereby increasing the pressure of the second spring 34, increasing the pressure of the piston cylinder 24, and the pressure of the bandage 27. The heavier the child is, the greater the restraint force is. In this way, the pressure will be automatically changed according to the weight of different children. The greater the weight, the greater the restraint force, and the better the fixation effect. After the puncture is completed, the air pump 29 stops pumping air through the switch 291, or performs reverse pumping, and then the electric push rod 22 moves up to release the fixation.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed bed for puncture of children with variable restraint force, comprising a bed frame (1), bed legs (11) mounted at the lower end of the bed frame (1), a support plate (12) mounted between the bed legs (11), and a bed board (13) located in the bed frame (1) and capable of moving up and down, characterized in that: The bed board (13) and the support board (12) are connected via an elastic telescopic mechanism so as to move vertically downward when under pressure, and the bed board (13) extends downward in a circumferential direction to form a frame-shaped guide portion to avoid pinching a patient; The telescopic mechanism comprises a guide rod (14) with a square cross section fixed to the upper end of the support plate (12) and a matching sleeve (15) sleeved on the guide rod (14); the upper end of the guide rod (14) and the top of the inner cavity of the sleeve (15) are connected via a first spring (16); the upper end of the sleeve (15) is fixed to the lower end of the bed board (13); The upper end of the bed board (13) is recessed to form a restraining groove (2) corresponding to the human body shape, and an inverted "U"-shaped bracket (21) is installed on the upper end of the bed frame (1), and an electric push rod (22) is installed on the bracket (21). The telescopic rod of the electric push rod (22) extends downward from the bracket (21) and is connected to a horizontal "I"-shaped pressing plate (23). The pressing plate (23) is in the shape of a shell with a hollow interior. The four ends of the pressing plate (23) are open for ventilation, and the four openings of the pressing plate (23) are respectively connected to piston cylinders (24) with a square cross section and an opening at the lower end. A pressure mechanism capable of generating a constant pressure on the patient through gas is installed in the piston cylinder (24); It also includes a pressure adjustment mechanism disposed between the piston cylinder (24) and the bed frame (1), the pressure adjustment mechanism being capable of increasing the pressure as the bed board (13) moves downward to cope with heavier patients; The pressure mechanism comprises an anti-slipping portion (25) extending inwardly and downwardly from the lower end of the piston cylinder (24) to form a cylindrical anti-slipping portion with a square cross section, and a piston rod (26) inserted into the anti-slipping portion (25); an anti-slipping block is fixed to the upper end of the piston rod (26); the lower ends of the four piston rods (26) are connected by a bandage (27) that can be pressed on the patient; the bandage (27) is provided with an operating port (28) for puncture; the pressure plate (23) is connected to an air pump (29) for providing pressure and a safety valve mechanism for exhausting air; the air pump (29) is connected to a switch (291) installed on a bracket; The safety valve mechanism comprises a safety cylinder (3) with an upper opening fixed to the right end of the bed frame (1) and a lower piston block (31) located in the safety cylinder (3); the lower end of the safety cylinder (3) is connected to the pressure plate (23) via a soft conduit (32); an exhaust hole (33) located on the upper side of the lower piston block (31) is provided on the circumference of the safety cylinder (3); and the upper end of the lower piston block (31) is connected to a second spring (34); The pressure adjustment mechanism comprises an upper piston block (35) mounted on the inner side of the safety cylinder (3), and the upper end of the second spring (34) is fixed to the lower end of the upper piston block (35). The upper piston block (35) is fixed to the bed board (13) via an "L"-shaped connecting rod (36).

2. A fixed bed for puncture of children with variable restraint force according to claim 1, characterized in that: The bed board (13) is in the shape of an arc with a convex middle portion, so as to facilitate the bandage (27) to apply pressure downward from the front and rear sides.

3. A fixed bed for puncture of children with variable restraint force according to claim 2, characterized in that: A rotating rod (4) is rotatably connected between the lower ends of the left and right piston rods (26), and the bandage (27) is fixed on the rotating rod (4). The rotating rod (4) passes through the piston rod (26) to the right and is fixed with a stopper (41) arranged in front and back. The stopper (41) is plugged with two stopper rods (42) that penetrate the left and right sides. The two stopper rods (42) are located at the front and rear sides of the piston rod (26), and the right ends of the two stopper rods (42) are connected by a pull plate (43). The pull plate (43) and the stopper (41) are connected by a third spring (44) sleeved on the stopper rod (42).

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