Analgesia pump for acute trauma patient

Abstract

The invention discloses an analgesia pump for an acute trauma patient, and relates to the technical field of medical instruments, the analgesia pump comprises a functional shell, the functional shell comprises a shell, the shell is internally divided into a control cavity on the upper side and a liquid medicine cavity on the lower side through a horizontal partition plate, and the inner bottom and the right side of the liquid medicine cavity are divided into L-shaped medicine tube channels through L-shaped partition plates; a limiting seat is arranged in the middle of the horizontal part of the L-shaped partition plate, the medicine bag limiting and extruding executing mechanism comprises a medicine bag side limiting plate and an opposite displacement control assembly, and the medicine liquid supply mechanism comprises a medicine bag extruding power mechanism, a medicine conveying air pumping mechanism and a medicine conveying amount adaptability control mechanism; according to the analgesia pump for the patient with the acute trauma, the patient with the acute trauma uses the analgesia pump, the patient with the acute trauma can select the corresponding analgesia liquid medicine infusion speed according to the pain feeling of the patient, and a medicine tube used for liquid medicine infusion is convenient to arrange and install.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an analgesic pump for acute trauma patients. Background Art

[0002] At present, the analgesic pump is a liquid infusion device that can maintain a stable concentration of analgesics in the blood, which can help achieve better analgesic treatment with less drugs. The analgesic pump can help trauma patients effectively relieve pain and is widely used in medical treatment.

[0003] For patients with acute trauma, since the trauma conditions of each patient are different and the physical conditions of each patient are also different, the specific drug delivery volume of the analgesic pump is not applicable to different acute trauma patients. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an analgesic pump for acute trauma patients, which allows acute trauma patients to choose the corresponding analgesic solution infusion speed according to their own pain. The medicine tube used for solution infusion is convenient to arrange and install, and can also have a certain buffering effect when the medicine tube is pulled, thereby avoiding the medicine tube between the analgesic pump and the infusion needle from being pulled and causing the medicine tube connection to be disconnected, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an analgesic pump for acute trauma patients, comprising a functional shell, the functional shell comprising a shell, the shell is divided into an upper control chamber and a lower drug liquid chamber by a horizontal partition, the bottom and right side of the drug liquid chamber are separated into an L-shaped drug tube channel by an L-shaped partition, a limited position seat is arranged in the middle of the horizontal part of the L-shaped partition, and further comprising: The medicine bag limiting extrusion actuator comprises a medicine bag side limiting plate and an opposite displacement control component. Two medicine bag side limiting plates corresponding to the left and right are slidably connected in the medicine liquid cavity. The tops of the two medicine bag side limiting plates are connected to the opposite displacement control component. A telescopic plate is slidably connected between the two medicine bag side limiting plates. The top of the telescopic plate is connected to one end of a bent rod. The middle of the upper side of the medicine bag side limiting plate is respectively provided with grooves corresponding to the bent rod. The liquid medicine supply mechanism is installed between the two medicine bag side limit plates; The medicine bag extrusion power mechanism is installed on the horizontal partition plate, and the bottom end of the medicine bag extrusion power mechanism is connected to the other end of the bent rod; The drug delivery pump mechanism is installed in the control cavity, connected to the drug bag extrusion power mechanism, and is equipped with a drug delivery amount adaptability control mechanism.

[0006] The opposite displacement control component is used to drive the two medicine bag side limit plates to move closer to or away from each other, so that the distance between the two medicine bag side limit plates is adjusted according to the width of the medicine bag, ensuring that the medicine bag is in a stable vertical state between the two medicine bag side limit plates. The telescopic plate is telescopic with the distance between the two medicine bag side limit plates. The liquid medicine supply mechanism is used to hold the liquid medicine. The medicine bag extrusion power mechanism drives the telescopic plate to move downward between the two medicine bag side limit plates through the bent rod. The telescopic plate squeezes the liquid medicine supply mechanism, allowing the liquid medicine supply mechanism to infuse analgesic liquid medicine to the patient. The groove avoids interference with the downward movement of the bent rod. The drug delivery pump air mechanism provides air pressure for the drug bag extrusion power mechanism. The drug delivery amount adaptability control mechanism cooperates with the drug delivery pump air mechanism to control the speed of providing air pressure to the drug bag extrusion power mechanism, thereby controlling the speed at which the telescopic plate squeezes the medicine liquid supply mechanism, and thus controls the speed at which the medicine liquid supply mechanism infuses the analgesic solution. The drug delivery amount adaptability control mechanism is controlled by the acute trauma patient according to his or her actual perception, and can allow the acute trauma patient to choose the corresponding analgesic solution infusion speed according to his or her own pain, thereby achieving a good analgesic effect.

[0007] Furthermore, the liquid medicine supply mechanism includes a medicine bag, and a medicine bag is arranged between the side limit plates of the medicine bag. The bottom end of the medicine bag is connected to one end of the medicine tube through a hard end head, and the hard end head is clamped with the limit seat. The medicine tube is located in the L-shaped medicine tube channel, and the outer side of the medicine tube is provided with a pulling retaining ring at an equal distance. A tube penetration notch is provided at a position corresponding to the L-shaped medicine tube channel on the right side of the shell, and the other end of the medicine tube extends to the right side of the shell through the tube penetration notch. The analgesic liquid is contained in the medicine bag, and the air in the medicine bag needs to be exhausted. The analgesic liquid in the medicine bag is subsequently expelled by squeezing. There will be no air in the medicine tube, and it is safe to use. The limit seat limits the hard end head, so that the medicine bag can be stably installed between the two side limit plates of the medicine bag. The telescopic plate moves downward to squeeze the medicine bag, and the analgesic liquid in the medicine bag enters the medicine tube and can be infused outward. After the medicine bag is filled with liquid medicine, the two sides are arc-shaped. The side where the two side limit plates of the medicine bag are close to each other is also provided with an arc limiting groove, which limits the two sides of the medicine bag well. At this time, the shapes of the two ends of the telescopic plate are adapted to each other with the arc limit grooves, and the medicine tube needs to be replaced after each use. If the medicine tube is used in the way of extracting medicine by the analgesic pump in the prior art, the medicine tube requires a specific control device to control it, and the medicine tube needs to be accurately installed in order to cooperate with the control device. The installation of the medicine tube will be complicated and cumbersome, and the disassembly and replacement of the medicine tube will be troublesome. The medicine tube in the present application only serves to transport the medicine, and only needs to be quickly placed in the L-shaped medicine tube channel. The medicine tube used for medicine infusion is easy to arrange and install.

[0008] Furthermore, it also includes a drug tube pulling buffer mechanism, which includes a buffer spring, the top of the L-shaped drug tube channel is fixedly connected to the top of the buffer spring, the bottom of the buffer spring is fixedly connected to a buffer slide, both sides of the buffer slide are vertically slidably connected to both sides of the vertical part of the L-shaped drug tube channel, and a wire clamp is installed on the front side of the buffer slide, which is slidably engaged with the drug tube. Since the patient needs to carry the analgesic pump with him when moving, the distance between the analgesic pump and the patient will inevitably change, and the drug tube will inevitably be pulled at this time. If the pulling force is too large by mistake, it is easy to cause the drug tube connection to be disconnected or the drug tube to be damaged. Therefore, a drug tube pulling buffer mechanism is provided. According to the length of the drug tube extending out of the shell, a suitable pulling retaining ring is selected to be located at the lower side of the wire clamp. The wire clamp limits the drug tube so that the drug tube can only move up and down relative to the wire clamp but cannot separate from the wire clamp. When the drug tube is pulled, the drug tube moves up relative to the wire clamp. Since the pulling retaining ring is blocked by the bottom of the wire clamp, the buffer slide plate is driven to move up the vertical part of the L-shaped drug tube channel, and the buffer spring is compressed. With the help of the elasticity of the buffer spring, the drug tube is buffered when it is pulled, thereby avoiding the disconnection of the drug tube connection or damage to the drug tube when the drug tube is pulled.

[0009] Furthermore, the medicine bag extrusion power mechanism includes an extrusion cylinder, the left end of the horizontal partition is fixedly connected to the bottom of the extrusion cylinder, a piston is slidably connected in the extrusion cylinder, the bottom center of the piston is fixedly connected to the top of the piston rod, the bottom end of the piston rod is connected to the end of the bent rod, and a piston rod bottom pressure relief assembly is installed on the piston rod and the piston. The drug delivery pumping mechanism pumps air to the top of the extrusion cylinder through the top port at the top of the extrusion cylinder, and the air pressure drives the piston and the piston rod to move downward relative to the extrusion cylinder. The piston rod drives the telescopic plate to move downward through the bent rod to achieve the extrusion of the medicine bag. When the liquid medicine in the medicine bag is completely squeezed out, the piston rod needs to stop moving downward. At this time, the piston rod bottom pressure relief assembly will relieve the air pressure in the extrusion cylinder to stop the piston rod from continuing to move downward, and the piston and the piston rod need to be moved upward relative to the extrusion cylinder for resetting with the help of the piston rod bottom pressure relief assembly.

[0010] Furthermore, the pressure relief assembly at the bottom of the piston rod includes a pressure relief column, a conical pressure relief groove is provided at the top center of the piston, and a pressure relief through hole is provided in the middle of the piston rod, the pressure relief through hole is vertically slidably connected with the pressure relief column, the top of the pressure relief column is fixedly connected with a conical pressure relief plug that cooperates with the conical pressure relief groove, a pressure relief groove is provided on the side of the pressure relief column, the bottom end of the pressure relief column is fixedly connected with a pressure relief reset button, and the column section of the pressure relief column between the piston rod and the pressure relief reset button is sleeved with compression spring 2. The elastic force of the second compression spring pushes the pressure relief reset button and the pressure relief column downward. The conical pressure relief plug is in the conical pressure relief groove, blocking the conical pressure relief groove. The air pressure in the extrusion cylinder will not decrease, and the piston rod continues to descend relative to the extrusion cylinder. When the bottom of the pressure relief reset button contacts the L-shaped partition, the second compression spring is compressed and shortened, and the pressure relief column moves upward relative to the piston rod, driving the conical pressure relief plug to move upward relative to the piston. There is a pressure relief gap between the conical pressure relief plug and the conical pressure relief groove. The air in the top of the extrusion cylinder is discharged through the pressure relief gap and the pressure relief groove, completing the pressure relief at the top of the extrusion cylinder. When all the analgesic liquid in the medicine bag needs to be discharged and the telescopic plate needs to be moved up and reset, the pressure relief reset button is pushed upward. With the help of the above process, all the air in the top of the extrusion cylinder can be discharged, thereby realizing the exhaust reset process of the cylinder composed of the extrusion cylinder, the piston and the piston rod.

[0011] Further, the pump air mechanism for drug delivery includes a lifting plate, a bracket is installed at the top of the control chamber, two vertical rails are fixedly connected to the bottom sides of the bracket, two ends of the lifting plate are respectively slidably connected to the track grooves of the two vertical rails, and compression springs are installed at the bottom of the track grooves of the two vertical rails. A support is fixedly connected to the left side of the bottom of the bracket, and the support is movably connected to the left end of the folding control plate through a movable shaft. The folding control plate is located on the upper side of the lifting plate, and an airbag pump air assembly is installed at the bottom of the lifting plate. The drug delivery amount adaptability control mechanism can drive the right end of the folding control plate to move downward relative to the movable shaft, and the right end of the folding control plate pushes the lifting plate to move downward along the vertical rail. The elastic force of the compression spring three allows the top of the lifting plate to always be in stable contact with the lower side of the right end of the folding control plate. The height change of the lifting plate is used to change the pumping efficiency of the airbag pump air assembly. The bracket adopts a U-shaped structure, and the opening of the bracket faces the front side. The other components of the pump air mechanism for drug delivery are all installed on the bracket, and the bracket is fixed to the top of the control chamber by screws. The whole can be assembled and then installed in the control chamber, and the assembly is convenient and quick.

[0012] Furthermore, the airbag pump air assembly includes an airbag and a motor, the airbag is installed at the bottom of the lifting plate through the airbag seat, the air inlet of the airbag is installed with an air inlet check valve, the air outlet of the airbag is connected to one end of the air pipe through the exhaust check valve, the other end of the air pipe is connected to the top port of the extrusion cylinder, the motor is installed at the bottom of the bracket through the motor frame, the output shaft of the motor is fixedly connected to a cam, and the cam is located below the airbag. The motor frame is used to install the motor. When the motor is working, it drives the cam to rotate. When the raised part of the cam is facing, it can squeeze the bottom of the airbag. The air in the airbag enters the trachea through the exhaust one-way valve, and enters the extrusion cylinder through the trachea, allowing the cylinder to stretch. After the raised part of the cam leaves the airbag, the airbag is reset due to elastic deformation and air is inhaled through the intake one-way valve. As the motor continues to work, air can be continuously pumped into the extrusion cylinder to complete the continuous extension of the cylinder. The continuous supply of the medicine bag is completed by squeezing the medicine bag. The airbag is installed at the bottom of the lifting plate through the airbag seat. When the lifting plate is pushed downward by the right end of the folding control plate, it also drives the airbag to move downward. The degree of squeezing of the airbag by the raised part of the cam increases each time, the airbag's pumping efficiency is improved, and the infusion rate of the analgesic solution can also be increased.

[0013] Furthermore, the airbag pump air assembly also includes an airbag extrusion plate. The bottom of the lifting plate is located at the front and rear sides of the airbag and is fixedly connected to two vertical guide columns. The two vertical guide columns are vertically slidingly connected to the front and rear sides of the airbag extrusion plate respectively. A wear-resistant wheel is rotatably installed on the bottom of the airbag extrusion plate through a wheel frame, and the bottom of the wear-resistant wheel is rollingly connected to the top of the cam. Since continuous frictional contact between the cam and the airbag will wear the airbag, a vertical guide column, an airbag extrusion plate, a wheel frame and a wear-resistant wheel are provided to convert the frictional contact between the cam and the airbag into rolling contact between the wear-resistant wheel and the cam to avoid wear of the airbag. When the raised portion of the cam is facing upward, the airbag extrusion plate is pushed upward through the wheel frame and the wear-resistant wheel. The airbag extrusion plate squeezes the airbag, and the raised portion of the cam leaves the wear-resistant wheel. The airbag is reset, pushing the airbag extrusion plate to move upward along the vertical guide column. The cam continues to rotate, and the airbag extrusion plate periodically moves up and down along the vertical guide column to complete the periodic extrusion of the airbag. The extension of the cylinder is controlled by air pressure. Since air is easily compressed and the amount of air pumped by the airbag each time is very small, the extension speed of the cylinder is relatively stable, which is conducive to the relatively stable discharge of the medicine bag.

[0014] Furthermore, the adaptive control mechanism for drug delivery includes a control button column, and five button holes are opened at equal intervals laterally on the top of the bracket, and a control button column is vertically slidably connected in each button hole, and the top of each control button column passes through the shell hole on the shell, and the bottom of each control button column is fixedly connected to the top of the pressing column, and each pressing column is slidably connected to the corresponding limiting circular hole at the bottom of the bracket, and the bottom end of each pressing column is threadedly connected to a block seat, and the column section of each pressing column located on the inner side of the bracket is respectively sleeved with a compression spring four, and the pressing column is connected to the button column locking and unlocking assembly. When the control button column is pressed downward, the control button column drives the block seat to move downward by pressing the column, and the bottom of the block seat pushes the folding control plate to rotate relative to the movable axis. Since different block seats are at different distances from the movable axis, when different block seats descend by the same distance, the rotation angles of the folding control plate will be different. The different rotation angles of the folding control plate relative to the movable axis will also change the descending distance of the lifting plate. The descent of the left block seat will make the rotation angle of the folding control plate larger and the descending distance of the lifting plate larger. At this time, the cam will squeeze the airbag more when it works, and the infusion of the analgesic solution will be accelerated. The descent of the right block seat will make the rotation angle of the folding control plate smaller, and the descending distance of the lifting plate will also be smaller. At this time, the cam will squeeze the airbag less when it works, and the infusion speed of the analgesic solution will be slowed down.

[0015] Furthermore, the button column locking and unlocking assembly includes a sliding vertical plate, a vertical through groove is respectively provided on the rear side of the bracket corresponding to the position of each control button column, a sliding vertical plate is horizontally slidably connected to the rear side of the bracket, a vertical guide groove is respectively provided on the top of the sliding vertical plate corresponding to the position of each control button column, a slope is respectively provided on the left side of the top of each vertical guide groove, and a locking groove is respectively provided on the left side of the bottom of the four vertical guide grooves on the left side, a longitudinal sliding column is respectively fixedly connected to the bottom end of each control button column, and the rear end of each sliding column respectively passes through the top of the corresponding vertical guide groove and is vertically slidably connected to the corresponding vertical through groove, the right end inside the bracket is connected to the right end of the tension spring, and the left end of the tension spring is connected to the front side of the sliding vertical plate. The control button column is pressed downward, and the pressing column moves downward relative to the bracket. The compression spring four is compressed, and the sliding column on the control button column moves downward in the vertical guide groove and the vertical through groove. Due to the guidance of the slope, the sliding column pushes the sliding vertical plate to move left relative to the bracket. At this time, the tension spring is stretched, and when the sliding column slides to the bottom of the vertical guide groove, if there is a card slot on the left side of the bottom of the vertical guide groove, the tension spring is reset and shortened, pulling the sliding vertical plate to move left relative to the bracket. The sliding column is in the card slot. At this time, the compression spring four has an elastic tendency to stretch, but due to the card slot For the limitation of the sliding column, the pressing column and the control button column will not move up relative to the bracket. The stopper at the bottom of the pressing column can stably push the folding control plate to keep the rotation angle of the folding control plate relative to the movable axis stable. Since the bottom of the four vertical guide grooves on the left have a positioning groove, the four control button columns on the left can be divided into four gears. Pressing different control button columns among the four control button columns on the left can change the infusion speed of the analgesic solution. By pressing the four control button columns on the left from left to right, the infusion speed of the analgesic solution decreases successively.

[0016] The bottom of the rightmost vertical guide groove does not have a locking groove. Therefore, after pressing the rightmost control button column, the sliding vertical plate moves left relative to the bracket. The four sliding columns on the left are all located at the bottom of the vertical guide groove and are not in the locking groove. The rightmost control button column is released. Due to the extension of the rightmost compression spring four, the rightmost control button column moves up. Due to the return shortening of the tension spring, the sliding vertical plate moves right relative to the bracket, which can unlock any locking groove and sliding column. At this time, the upper sides of all five blocks are close to the bottom of the bracket, and no downward thrust is exerted on the folding control plate. At this time, the folding control plate remains horizontal, and the lifting plate slides upward along the vertical rail due to the elastic force of the compression spring three. The airbag moves up with the lifting plate. The airbag can no longer be squeezed when the cam rotates, so the infusion of the analgesic solution can be stopped.

[0017] Compared with the prior art, the beneficial effects of the analgesic pump for acute trauma patients are: 1. Acute trauma patients use the analgesic pump with an adaptive control mechanism for drug delivery, which can cooperate with the pump air mechanism for drug delivery to control the speed of providing air pressure to the drug bag extrusion power mechanism, thereby controlling the speed at which the telescopic plate squeezes the drug liquid supply mechanism, and thus controlling the speed at which the drug liquid supply mechanism infuses the analgesic solution, allowing acute trauma patients to choose the corresponding analgesic solution infusion speed according to their own pain.

[0018] 2. For patients with acute trauma, the medicine tube in the analgesic pump only serves to transport the medicine. It only needs to be quickly placed in the L-shaped medicine tube channel. The medicine tube used for medicine infusion is easy to arrange and install.

[0019] 3. When the medicine tube is pulled, the medicine tube moves upward relative to the wire clamp. Since the pulling retaining ring is blocked by the bottom of the wire clamp, the buffer slide plate is driven to move upward on the vertical part of the L-shaped medicine tube channel, and the buffer spring is compressed. With the help of the elasticity of the buffer spring, the medicine tube is buffered when it is pulled, avoiding the disconnection of the medicine tube connection or damage to the medicine tube when the medicine tube is pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of an analgesic pump used for acute trauma patients of the present invention; Figure 2 This is a schematic diagram of the internal structure of the analgesic pump used for acute trauma patients of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A; Figure 4 For the present invention Figure 2 A front view of the structure without the liquid medicine supply mechanism; Figure 5 It is a schematic cross-sectional structure diagram of the Chinese medicine bag extrusion power mechanism of the analgesic pump used for acute trauma patients of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the structure of the pumping mechanism and the drug delivery amount adaptive control mechanism used in the analgesic pump for acute trauma patients of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure viewed from above; Fig. 9 For the present invention Figure 8 A schematic diagram of the partially enlarged structure at C in the middle; Fig.10 For the present invention Figure 8 The schematic diagram of the local enlarged structure at D in the middle; Fig.11 For the present invention Figure 7 Schematic diagram of the rear structure; Fig.12 For the present invention Figure 7 Schematic diagram of partial front view structure; Fig.13 A schematic cross-sectional structure diagram of a telescopic plate in an analgesic pump for acute trauma patients of the present invention; Fig.14 A schematic diagram of the rear structure of the analgesic pump for acute trauma patients of the present invention with a cover removed; In the figure: 1 functional shell, 11 shell, 12 anti-mistaken touch sink, 13 horizontal partition, 14 L-shaped partition, 15 card seat, 16 fixed cover, 17 disassembly cover, 18 battery, 19 controller, 110 display screen, 111 baffle, 112 back plate, 113 buckle groove, 114 card foot, 115 hanging ring, 116 pipe notch, 117 limit seat, 2 medicine bag limit extrusion actuator, 21 cross rail, 22 medicine bag side limit plate, 23 two-way lead screw, 24 lead screw nut, 25 knob, 26 bending rod, 27 telescopic plate, 271 mother plate, 272 sliding cavity, 273 sliding plate, 274 blind hole, 275 compression spring, 3 liquid medicine supply mechanism, 31 medicine bag, 32 hard end, 33 medicine tube, 34 pulling baffle ring, 35 external joint, 4 medicine tube pulling buffer mechanism, 41 buffer spring, 42 buffer slide plate, 43 guide block, 44 guide groove, 45 wire clamp, 5 medicine bag extrusion power mechanism, 51 extrusion cylinder, 52 piston, 5 3 conical pressure relief plug, 54 piston rod, 55 pressure relief column, 56 pressure relief groove, 57 cylinder seat, 58 compression spring 2, 59 pressure relief reset button, 510 contact switch, 6 pump air mechanism for drug delivery, 61 bracket, 62 support, 63 movable shaft, 64 folding control board, 65 vertical rail, 66 lifting plate, 67 compression spring 3, 68 airbag seat, 69 airbag, 610 intake check valve, 611 exhaust check valve, 61 2 trachea, 613 vertical guide column, 614 airbag extrusion plate, 615 wheel frame, 616 wear-resistant wheel, 617 cam, 618 motor, 619 motor frame, 7 drug delivery amount adaptability control mechanism, 71 sliding vertical plate, 72 spring frame, 73 tension spring, 74 vertical guide groove, 75 positioning groove, 76 vertical through groove, 77 sliding column, 78 control button column, 79 compression spring four, 710 pressing column, 711 block seat. DETAILED DESCRIPTION

[0021] 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.

[0022] For example, see Figures 1 to 14This embodiment provides a technical solution: an analgesic pump for acute trauma patients, including a functional shell 1, the functional shell 1 includes a shell 11, a horizontal partition 13, an L-shaped partition 14 and a limit seat 117, the shell 11 is divided into an upper control chamber and a lower medicine chamber by the horizontal partition 13, the bottom and right side of the medicine chamber are separated into an L-shaped medicine tube channel by the L-shaped partition 14, and a limit seat 117 is set in the middle of the horizontal part of the L-shaped partition 14.

[0023] The functional shell 1 also includes a hanging ring 115. The hanging ring 115 is integrally formed on one side of the top of the shell 11. The hanging ring 115 is used to connect a hanging rope. When the patient moves, the hanging ring can be extended to allow the analgesic pump to move with the patient.

[0024] It also includes a medicine bag limiting extrusion actuator 2, a medicine liquid supply mechanism 3, a medicine bag extrusion power mechanism 5, a medicine delivery pump mechanism 6 and a medicine delivery amount adaptability control mechanism 7; The medicine bag limiting and squeezing actuator 2 includes a medicine bag side limiting plate 22, a bent rod 26, a telescopic plate 27 and a relative displacement control component. Two corresponding medicine bag side limiting plates 22 are horizontally slidably connected in the medicine liquid cavity. The tops of the two medicine bag side limiting plates 22 are connected to the relative displacement control component. A telescopic plate 27 is vertically slidably connected between the two medicine bag side limiting plates 22. The top of the telescopic plate 27 is connected to one end of the bent rod 26. The middle part of the upper side of the medicine bag side limiting plate 22 is respectively provided with grooves corresponding to the bent rod 26.

[0025] The telescopic plate 27 includes a mother plate 271, a sliding cavity 272, a sliding plate 273, a blind hole 274, and a compression spring 275. The left and right ends of the mother plate 271 are respectively provided with two sliding cavities 272, and the two sliding plates 273 are respectively connected in a transverse sliding manner in the two sliding cavities 272. The middle part of one end of the sliding plate 273 located in the sliding cavity 272 is provided with a blind hole 274, and one end of the compression spring 275 is connected in the blind hole 274. The other end of the compression spring 275 is connected to the middle part of the inner end of the sliding cavity 272. The compression spring 275 pushes the sliding plate 273 to have a tendency to extend out of the sliding cavity 272, so that the outer ends of the two sliding plates 273 respectively contact the sides of the two medicine bag side limit plates 22 that are close to each other. As the distance between the two medicine bag side limit plates 22 changes, the two sliding plates 273 also move relative to the mother plate 271 to adapt to the distance between the two medicine bag side limit plates 22, so that the telescopic plate 27 can fully press down the liquid medicine supply mechanism 3.

[0026] The opposite displacement control assembly includes a cross rail 21, a bidirectional lead screw 23, a lead screw nut 24, and a knob 25. The top rear side of the liquid medicine chamber is fixedly connected to the cross rail 21. The top rear sides of the two medicine bag side limit plates 22 are both slidably connected to the cross rail 21. The tops of the two medicine bag side limit plates 22 are fixedly connected to the lead screw nut 24. The top of the liquid medicine chamber is rotatably connected to a bidirectional lead screw 23 distributed laterally through a bearing. The thread directions of the two ends of the bidirectional lead screw 23 are opposite, and the bidirectional lead screw The two ends of 23 are respectively connected with two lead screw nuts 24. A knob 25 is installed on the left end of the bidirectional lead screw 23. By means of the knob 25, the bidirectional lead screw 23 is rotated clockwise, and the threaded action of the bidirectional lead screw 23 and the lead screw nut 24 drives the two medicine bag side limit plates 22 to approach each other along the horizontal rail 21. By means of the knob 25, the bidirectional lead screw 23 is rotated counterclockwise, and the threaded action of the bidirectional lead screw 23 and the lead screw nut 24 drives the two medicine bag side limit plates 22 to move away from each other along the horizontal rail 21.

[0027] The medicine liquid supply mechanism 3 is installed between the two medicine bag side limiting plates 22 .

[0028] The medicine liquid supply mechanism 3 includes a medicine bag 31, a hard end cap 32, a medicine tube 33 and a pulling retaining ring 34. The medicine bag 31 is arranged between the medicine bag side limiting plates 22. The bottom end of the medicine bag 31 is connected to one end of the medicine tube 33 through the hard end cap 32. The hard end cap 32 is clamped with the limiting seat 117. The medicine tube 33 is located in the L-shaped medicine tube channel, and pulling retaining rings 34 are arranged at equal distances on the outside of the medicine tube 33. A tube penetration notch 116 is opened at a position corresponding to the L-shaped medicine tube channel on the right side of the shell 11. The other end of the medicine tube 33 passes through the tube penetration notch 116 and extends to the right side outside of the shell 11.

[0029] The drug liquid supply mechanism 3 further includes an external connector 35 . One end of the drug tube 33 located outside the housing 11 is connected to the external connector 35 . The external connector 35 is used to connect to the infusion needle.

[0030] The medicine bag 31 contains analgesic liquid, and the air in the medicine bag 31 needs to be exhausted. The analgesic liquid in the medicine bag 31 is subsequently extruded. There will be no air in the medicine tube 33, which is safe to use. The limit seat 117 limits the hard end 32, so that the medicine bag 31 can be stably installed between the two medicine bag side limit plates 22. The telescopic plate 27 moves downward to squeeze the medicine bag 31, and the analgesic liquid in the medicine bag 31 enters the medicine tube 33 and can be infused outward. After the medicine bag 31 is filled with liquid medicine, the two sides of the medicine bag 31 are arc-shaped, and the side where the two medicine bag side limit plates 22 are close to each other is also provided with an arc limit groove, which can be used to control the two sides of the medicine bag 31. Good limiting, at this time, the shapes of the two ends of the telescopic plate 27 are adapted to the arc limiting groove, and the medicine tube 33 needs to be replaced after each use. If the medicine tube 33 is used in the way of extracting the medicine by the analgesic pump in the prior art, the medicine tube 33 requires a specific control device to control it, and the medicine tube 33 needs to be accurately installed in order to cooperate with the control device. The installation of the medicine tube 33 will be complicated and cumbersome, and the disassembly and replacement of the medicine tube 33 will be troublesome. The medicine tube 33 in the present application only plays the role of conveying the medicine, and only needs to be quickly placed in the L-shaped medicine tube channel. The medicine tube 33 used for medicine infusion is easy to arrange and install.

[0031] The medicine bag extrusion power mechanism 5 is installed on the horizontal partition 13 , and the bottom end of the medicine bag extrusion power mechanism 5 is connected to the other end of the bent rod 26 .

[0032] The medicine bag extrusion power mechanism 5 includes an extrusion cylinder 51, a piston 52, a piston rod 54 and a piston rod bottom pressure relief assembly. The left end of the horizontal partition 13 is fixedly connected to the bottom of the extrusion cylinder 51, and the piston 52 is slidably connected in the extrusion cylinder 51. The bottom center of the piston 52 is fixedly connected to the top of the piston rod 54, and the bottom end of the piston rod 54 is connected to the end of the bent rod 26. The piston rod bottom pressure relief assembly is installed on the piston rod 54 and the piston 52.

[0033] The medicine bag extrusion power mechanism 5 further includes a cylinder seat 57 . The bottom of the extrusion cylinder body 51 is provided with the cylinder seat 57 . The cylinder seat 57 is fixed to the left end of the horizontal partition 13 by screws.

[0034] The drug delivery air pump mechanism 6 pumps air into the top of the extrusion cylinder 51 through the top port at the top of the extrusion cylinder 51, and the air pressure drives the piston 52 and the piston rod 54 to move downward relative to the extrusion cylinder 51. The piston rod 54 drives the telescopic plate 27 to move downward through the bent rod 26 to achieve the extrusion of the medicine bag 31. When the liquid medicine in the medicine bag 31 is completely squeezed out, the piston rod 54 needs to stop moving downward. At this time, the piston rod bottom pressure relief assembly will relieve the air pressure in the extrusion cylinder 51 to stop the piston rod 54 from continuing to move downward, and the piston 52 and the piston rod 54 also need to be relocated relative to the extrusion cylinder 51 with the help of the piston rod bottom pressure relief assembly.

[0035] The pressure relief assembly at the bottom of the piston rod includes a conical pressure relief plug 53, a pressure relief column 55, a pressure relief groove 56, a compression spring 58 and a pressure relief reset button 59. A conical pressure relief groove is provided at the top center of the piston 52, and a pressure relief through hole is provided in the middle of the piston rod 54. The pressure relief column 55 is vertically slidably connected in the pressure relief through hole. The top of the pressure relief column 55 is fixedly connected with a conical pressure relief plug 53 that cooperates with the conical pressure relief groove. A pressure relief groove 56 is provided on the side of the pressure relief column 55. The bottom end of the pressure relief column 55 is fixedly connected with a pressure relief reset button 59, and the column section of the pressure relief column 55 between the piston rod 54 and the pressure relief reset button 59 is sleeved with a compression spring 58. The elastic force of the second compression spring 58 pushes the pressure relief reset button 59 and the pressure relief column 55 downward, and the conical pressure relief plug 53 is in the conical pressure relief groove to block the conical pressure relief groove. The air pressure in the extrusion cylinder 51 will not decrease, and the piston rod 54 will continue to descend relative to the extrusion cylinder 51. When the bottom of the pressure relief reset button 59 contacts the L-shaped partition 14, the second compression spring 58 is compressed and shortened, and the pressure relief column 55 moves upward relative to the piston rod 54, driving the conical pressure relief plug 53 to move upward relative to the piston 52, and the conical relief There is a pressure relief gap between the pressure plug 53 and the conical pressure relief groove. The air at the top of the extrusion cylinder 51 is discharged through the pressure relief gap and the pressure relief groove 56, completing the pressure relief at the top of the extrusion cylinder 51. When all the analgesic liquid in the medicine bag 31 needs to be discharged and the telescopic plate 27 needs to be moved up and reset, the pressure relief reset button 59 is pushed upward. With the help of the above process, the discharge of all the air at the top of the extrusion cylinder 51 can be completed, thereby realizing the exhaust and reset process of the cylinder composed of the extrusion cylinder 51, the piston 52, and the piston rod 54.

[0036] The medicine bag extrusion power mechanism 5 also includes a contact switch 510, and the contact switch 510 is installed at the position of the pressure relief reset button 59 on the upper side of the horizontal part of the L-shaped partition 14. When the liquid medicine in the medicine bag 31 is completely discharged, the pressure relief reset button 59 contacts the contact switch 510, the pressure relief reset button 59 stops moving downward, the compression spring 2 58 is compressed and shortened, and the cylinder stops extending after pressure relief. At this time, the contact switch 510 is also triggered by the pressure relief reset button 59, which is used to control the pumping mechanism 6 for drug delivery to stop pumping.

[0037] The drug delivery pump mechanism 6 is installed in the control cavity, and the drug delivery pump mechanism 6 is connected to the medicine bag extrusion power mechanism 5, and a drug delivery amount adaptability control mechanism 7 is installed on the drug delivery pump mechanism 6.

[0038] The drug delivery pump air mechanism 6 includes a bracket 61, a support 62, a movable shaft 63, a folding control plate 64, a vertical rail 65, a lifting plate 66, a compression spring three 67 and an air bag pump air component. The bracket 61 is installed at the top of the control chamber, and two vertical rails 65 are fixedly connected to the two sides of the bottom of the bracket 61. The two ends of the lifting plate 66 are respectively slidably connected to the track grooves of the two vertical rails 65. Compression spring three 67 is installed at the bottom of the track grooves of the two vertical rails 65. The top of the compression spring three 67 is connected to the lower side of the end of the lifting plate 66. The support 62 is fixedly connected to the left side of the bottom of the bracket 61. The support 62 is movably connected to the left end of the folding control plate 64 through the movable shaft 63. The folding control plate 64 is located on the upper side of the lifting plate 66, and the air bag pump air component is installed at the bottom of the lifting plate 66. The drug delivery amount adaptive control mechanism 7 can drive the right end of the folding control plate 64 to move downward relative to the movable shaft 63. The right end of the folding control plate 64 pushes the lifting plate 66 to move downward along the vertical rail 65. The elastic force of the compression spring three 67 allows the top of the lifting plate 66 to always be in stable contact with the lower side of the right end of the folding control plate 64. The height change of the lifting plate 66 is used to change the pumping efficiency of the airbag pump assembly. The bracket 61 adopts a U-shaped structure, and the opening of the bracket 61 faces the front side. The other components of the drug delivery pump mechanism 6 are installed on the bracket 61. The bracket 61 is fixed to the top of the control cavity by screws. The whole can be assembled and then installed in the control cavity. The assembly is convenient and quick.

[0039] The airbag pump air assembly includes an airbag seat 68, an airbag 69, an intake check valve 610, an exhaust check valve 611, an air pipe 612, a cam 617, a motor 618, and a motor frame 619. The airbag 69 is installed at the bottom of the lifting plate 66 through the airbag seat 68. The air inlet of the airbag 69 is installed with an intake check valve 610. The air outlet of the airbag 69 is connected to one end of the air pipe 612 through the exhaust check valve 611. The other end of the air pipe 612 is connected to the top port of the extrusion cylinder 51. The motor 618 is installed at the bottom of the bracket 61 through the motor frame 619. The output shaft of the motor 618 is fixedly connected to the cam 617, and the cam 617 is located below the airbag 69. The motor frame 619 is used to install the motor 618. The motor 618 drives the cam 617 to rotate. When the raised part of the cam 617 faces the direction, it can squeeze the bottom of the airbag 69. The air in the airbag 69 enters the air pipe 612 through the exhaust check valve 611, and enters the extrusion cylinder 51 through the air pipe 612 to extend the cylinder. After the raised part of the cam 617 leaves the airbag 69, the airbag 69 is reset due to elastic deformation, and air is sucked in through the intake check valve 610. As the motor 61 8 continuously works, and can continuously pump air into the extrusion cylinder 51, complete the continuous extension of the cylinder, and complete the continuous supply of the medicine solution through the extrusion of the medicine bag. The airbag 69 is installed at the bottom of the lifting plate 66 through the airbag seat 68. When the lifting plate 66 is pushed downward by the right end of the folding control plate 64, it also drives the airbag 69 to move downward. Each time the airbag 69 is squeezed by the raised part of the cam 617, the degree of squeezing increases, the pumping efficiency of the airbag 69 is also improved, and the infusion speed of the analgesic solution can also be increased.

[0040] The drug delivery amount adaptive control mechanism 7 includes a control button column 78, a compression spring four 79, a pressing column 710, a blocking seat 711 and a button column locking and unlocking assembly. Five button holes are horizontally and equidistantly opened on the top of the bracket 61, and a control button column 78 is vertically slidably connected in each button hole. The top of each control button column 78 passes through the shell hole on the shell 11, and the bottom of each control button column 78 is fixedly connected to the top of the pressing column 710. Each pressing column 710 is slidably connected to the corresponding limiting circular hole at the bottom of the bracket 61, and the bottom end of each pressing column 710 is threadedly connected with a blocking seat 711, and the bottom of the blocking seat 711 contacts the upper side of the folding control plate 64. The column section of each pressing column 710 located on the inner side of the bracket 61 is respectively sleeved with a compression spring four 79, and the pressing column 710 is connected to the button column locking and unlocking assembly. When the control button column 78 is pressed downward, the control button column 78 drives the block seat 711 to move downward by pressing the column 710, and the bottom of the block seat 711 pushes the folding control plate 64 to rotate relative to the movable shaft 63. Since the distances between different block seats 711 and the movable shaft 63 are different, when the distances of the different block seats 711 descending are the same, the rotation angles of the folding control plate 64 will be different. The different rotation angles of the folding control plate 64 relative to the movable shaft 63 will also change the descending distance of the lifting plate 66. The descent of the block seat 711 on the left side will make the rotation angle of the folding control plate 64 larger, and the descending distance of the lifting plate 66 will be larger. At this time, the cam 617 will squeeze the air bag 69 to a greater extent when it works, and the infusion of the analgesic solution will be accelerated. The descent of the block seat 711 on the right side will make the rotation angle of the folding control plate 64 smaller, and the descending distance of the lifting plate 66 will also be smaller. At this time, the cam 617 will squeeze the air bag 69 to a smaller extent when it works, and the infusion speed of the analgesic solution will be slowed down.

[0041] The functional shell 1 also includes an anti-accidental touch groove 12. The top of the shell 11 is provided with an anti-accidental touch groove 12. The tops of the five control button columns 78 extend into the anti-accidental touch groove 12. The anti-accidental touch groove 12 can prevent the top of the control button column 78 from being accidentally touched.

[0042] The button column locking and unlocking assembly includes a sliding vertical plate 71, a spring frame 72, a tension spring 73, a vertical guide slot 74, a locking slot 75, a vertical through slot 76 and a sliding column 77. A vertical through slot 76 is respectively provided on the rear side of the bracket 61 corresponding to the position of each control button column 78. A sliding vertical plate 71 is slidably connected to the rear side of the bracket 61 in a transverse manner. A vertical guide slot 74 is respectively provided on the top of the sliding vertical plate 71 corresponding to the position of each control button column 78. A slope is respectively provided on the left side of the top of each vertical guide slot 74, and a locking slot 75 is provided on the left side of the bottom of the four vertical guide slots 74 on the left side. A longitudinal sliding column 77 is respectively fixedly connected to the bottom end of each control button column 78. The rear end of each sliding column 77 passes through the top of the corresponding vertical guide slot 74 and is vertically slidably connected to the corresponding vertical through slot 76. The right end inside the bracket 61 is connected to the right end of the tension spring 73 through the spring frame 72, and the left end of the tension spring 73 is connected to the front side of the sliding vertical plate 71. The control button column 78 is pressed downward, and the pressing column 710 moves downward relative to the bracket 61. The compression spring four 79 is compressed, and the sliding column 77 on the control button column 78 moves downward in the vertical guide groove 74 and the vertical through groove 76. Due to the guidance of the slope, the sliding column 77 pushes the sliding vertical plate 71 to move left relative to the bracket 61. At this time, the tension spring 73 is stretched. When the sliding column 77 slides to the bottom of the vertical guide groove 74, if the bottom left side of the vertical guide groove 74 has a locking groove 75, the tension spring 73 is reset and shortened, pulling the sliding vertical plate 71 to move left relative to the bracket 61. The sliding column 77 is in the locking groove 75. At this time, the compression spring four 79 has an elastic tendency to stretch, but Due to the limitation of the sliding column 77 by the locking groove 75, the pressing column 710 and the control button column 78 will not move up relative to the bracket 61. The stopper 711 at the bottom of the pressing column 710 can stably push the folding control plate 64 to keep the rotation angle of the folding control plate 64 relative to the movable shaft 63 stable. Since the bottom of the four vertical guide grooves 74 on the left side have the locking groove 75, the four control button columns 78 on the left side can be divided into four gears. Pressing different ones of the four control button columns 78 on the left side can change the infusion speed of the analgesic solution. By pressing the four control button columns 78 on the left side from left to right, the infusion speed of the analgesic solution decreases successively.

[0043] When the locking cam 72 is in the state of being lifted up, the locking cam 72 is in the state of being lifted up, and the locking cam 72 is in the state of being lifted up, so that the locking cam 72 can be reset when the locking cam 72 is reset.

[0044] The functional shell 1 also includes a card holder 15, a fixed cover 16, a disassembly cover 17, a battery 18, a controller 19, a display screen 110, a baffle 111, a stopper 112, a buckle groove 113, and a card foot 114. The fixed cover 16 is fixedly installed at the position of the control chamber on the front top of the shell 11 by screws. The display screen 110 and control buttons are arranged in the middle of the fixed cover 16. A battery 18 is installed on the right side of the control chamber. A charging hole is arranged on the battery 18, and the charging hole passes through the side of the shell 11. A controller 19 is installed at the bottom of the control chamber. The controller 19 is electrically connected to the display screen 110. The battery 18 supplies power to the controller 19 and the display screen 110. The contact switch 510 is also electrically connected to the controller 19. The controller 19 controls the motor 618 to work. The control method adopts the existing technology. A plurality of card holders 15 are arranged on the inner wall of the liquid medicine chamber. The specific number of the card holders 15 is generally four. The rear side of the disassembly cover 17 is provided with a card corresponding to the card holder 15. The feet 114 are used to cooperate with the card seat 15 and the card feet 114 to realize the detachable installation of the disassembly cover 17 and the housing 11. The disassembly cover 17 is used to cover the liquid medicine chamber. In order to facilitate the removal of the disassembly cover 17, buckle grooves 113 are respectively provided on both sides of the disassembly cover 17. Since the size of the pipe penetration notch 116 is large, external dust can easily enter the L-shaped medicine tube channel. Therefore, the position of the disassembly cover 17 corresponding to the pipe penetration notch 116 is provided with a baffle 111. After the disassembly cover 17 is installed, the disassembly cover 17 is The baffle 111 blocks the tube penetration notch 116. It should be noted that the baffle 111 cannot press the medicine tube 33, and the medicine tube 33 must be able to move freely in the tube penetration notch 116. In order to allow the hard end head 32 to be stably located in the limit seat 117, a back plate 112 is further provided at the position of the limit seat 117 at the rear side of the disassembly cover 17. After the disassembly cover 17 is installed, the back plate 112 extends into the limit seat 117 to press the hard end head 32 to prevent the hard end head 32 and the limit seat 117 from loosening.

[0045] The housing 11 is divided into an upper control chamber and a lower liquid chamber by a horizontal partition 13. When in use, the opposite displacement control component is used to drive the two medicine bag side limit plates 22 to move closer to or away from each other, so that the distance between the two medicine bag side limit plates 22 is adjusted according to the width of the medicine bag, ensuring that the medicine bag is in a stable vertical state between the two medicine bag side limit plates 22, and the telescopic plate 27 is telescopic with the distance between the two medicine bag side limit plates 22. The liquid medicine supply mechanism 3 is used to hold the liquid medicine, and the medicine bag extrusion power mechanism 5 drives the telescopic plate 27 to move downward between the two medicine bag side limit plates 22 through the bent rod 26. The telescopic plate 27 squeezes the liquid medicine supply mechanism 3, allowing the liquid medicine supply mechanism 3 to infuse the analgesic liquid medicine to the patient, and the medicine bag The groove on the side limit plate 22 avoids interference with the downward movement of the bent rod 26. The drug delivery pump air mechanism 6 provides air pressure for the medicine bag extrusion power mechanism 5. The drug delivery amount adaptability control mechanism 7 cooperates with the drug delivery pump air mechanism 6 to control the speed of providing air pressure for the medicine bag extrusion power mechanism 5, thereby controlling the speed at which the telescopic plate 27 squeezes the medicine liquid supply mechanism 3, and also controls the speed at which the medicine liquid supply mechanism 3 infuses the analgesic solution. The drug delivery amount adaptability control mechanism 7 is controlled by the acute trauma patient according to his or her actual perception, so that the acute trauma patient can choose the corresponding analgesic solution infusion speed according to his or her pain, and the analgesic effect is good.

[0046] For example 2, please refer to Figures 1 to 14 This embodiment provides a technical solution: an analgesic pump for acute trauma patients. This embodiment is a further explanation of the structure of the first embodiment: The airbag pump air assembly also includes a vertical guide column 613, an airbag extrusion plate 614, a wheel frame 615 and a wear-resistant wheel 616. The bottom of the lifting plate 66 is located at the front and rear sides of the airbag 69 and is fixedly connected to two vertical guide columns 613 respectively. The two vertical guide columns 613 are vertically slidably connected to the front and rear sides of the airbag extrusion plate 614 respectively. The vertical guide columns 613 guide the movement direction of the airbag extrusion plate 614. The bottom of the airbag extrusion plate 614 is rotatably installed with a wear-resistant wheel 616 through the wheel frame 615, and the bottom of the wear-resistant wheel 616 is rollingly connected to the top of the cam 617. Since the continuous frictional contact between the cam 617 and the airbag 69 will wear the airbag 69, a vertical guide column 613, an airbag squeezing plate 614, a wheel frame 615 and a wear-resistant wheel 616 are provided to convert the frictional contact between the cam 617 and the airbag 69 into a rolling contact between the wear-resistant wheel 616 and the cam 617 to avoid the wear of the airbag 69. When the raised part of the cam 617 faces upward, the wheel frame 615 and the wear-resistant wheel 616 push the airbag squeezing plate 614 upward, and the airbag squeezing plate 614 squeezes the airbag 69. The raised part of cam 617 leaves the wear-resistant wheel 616, and the airbag 69 is reset, pushing the airbag squeezing plate 614 to move upward along the vertical guide column 613. The cam 617 continues to rotate, and the airbag squeezing plate 614 moves up and down periodically along the vertical guide column 613 to complete the periodic squeezing of the airbag 69. The extension of the cylinder is controlled by air pressure. Since air is easily compressed and the amount of air pumped by the airbag 69 each time is very small, the extension speed of the cylinder is relatively stable, which is conducive to the relatively stable discharge of the medicine bag 31.

[0047] For example 3, please refer to Figures 1 to 14 This embodiment provides a technical solution: an analgesic pump for acute trauma patients. The structure of this embodiment is roughly the same as that of the second embodiment, except that: It also includes a drug tube pulling buffer mechanism 4, which includes a buffer spring 41, a buffer slide 42 and a wire clamp 45. The top of the L-shaped drug tube channel is fixedly connected to the top of the buffer spring 41, and the bottom of the buffer spring 41 is fixedly connected to the buffer slide 42. Both sides of the buffer slide 42 are vertically slidably connected to both sides of the vertical part of the L-shaped drug tube channel. A wire clamp 45 is installed on the front side of the buffer slide 42, and the wire clamp 45 is slidably engaged with the drug tube 33.

[0048] The drug tube pulling buffer mechanism 4 also includes a guide block 43 and a guide groove 44. Two vertical guide grooves 44 are respectively provided on both sides of the vertical part of the L-shaped drug tube channel. Two guide blocks 43 are respectively fixedly connected to both sides of the buffer slide plate 42. The two guide blocks 43 are respectively vertically slidably connected to the two corresponding guide grooves 44.

[0049] Since the patient needs to carry the analgesic pump with him when moving, the distance between the analgesic pump and the patient will inevitably change. At this time, it is inevitable that the medicine tube 33 will be pulled. If the pulling force is too large, it is easy to cause the connection of the medicine tube 33 to be disconnected or the medicine tube 33 to be damaged. Therefore, a medicine tube pulling buffer mechanism 4 is provided. According to the length of the medicine tube 33 extending out of the shell 11, a suitable pulling retaining ring 34 is selected to be located at the lower side of the wire clamp 45. The wire clamp 45 limits the medicine tube 33 so that the medicine tube 33 can only move up and down relative to the wire clamp 45 but cannot be separated from the wire clamp 45. When the medicine tube 33 is pulled, the medicine tube 33 moves up relative to the wire clamp 45. Since the pulling retaining ring 34 is blocked by the bottom of the wire clamp 45, the buffer slide plate 42 is driven to move up in the vertical part of the L-shaped medicine tube channel, and the buffer spring 41 is compressed. With the help of the elasticity of the buffer spring 41, the medicine tube 33 is buffered when it is pulled, so as to avoid the connection of the medicine tube 33 being disconnected or the medicine tube 33 being damaged when the medicine tube 33 is pulled.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] 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. An analgesic pump for acute trauma patients, comprising a functional shell (1), the functional shell (1) comprising a shell (11), the shell (11) being divided into an upper control chamber and a lower drug liquid chamber by a horizontal partition (13), the bottom and right side of the drug liquid chamber being divided into an L-shaped drug tube channel by an L-shaped partition (14), a limited position seat (117) being provided in the middle of the horizontal part of the L-shaped partition (14), characterized in that: Also includes: The medicine bag limiting extrusion actuator (2) comprises a medicine bag side limiting plate (22) and an opposing displacement control component, wherein two medicine bag side limiting plates (22) corresponding to each other are slidably connected to the medicine liquid chamber in a transverse manner, the tops of the two medicine bag side limiting plates (22) are connected to the opposing displacement control component, a telescopic plate (27) is slidably connected between the two medicine bag side limiting plates (22) in a vertical manner, the top of the telescopic plate (27) is connected to one end of a bent rod (26), and grooves corresponding to the bent rod (26) are respectively provided in the middle of the upper sides of the medicine bag side limiting plates (22); A medicine liquid supply mechanism (3) is installed between two medicine bag side limit plates (22); A medicine bag extrusion power mechanism (5) is mounted on the horizontal partition (13), and the bottom end of the medicine bag extrusion power mechanism (5) is connected to the other end of the bent rod (26); The drug delivery pump mechanism (6) is installed in the control chamber, and the drug delivery pump mechanism (6) is connected to the drug bag extrusion power mechanism (5), and a drug delivery amount adaptability control mechanism (7) is installed on the drug delivery pump mechanism (6).

2. The analgesic pump for acute trauma patients according to claim 1, characterized in that: The liquid medicine supply mechanism (3) comprises a medicine bag (31), the medicine bag (31) is arranged between the medicine bag side limit plates (22), the bottom end of the medicine bag (31) is connected to one end of a medicine tube (33) via a hard end head (32), the hard end head (32) is clamped with a limit seat (117), the medicine tube (33) is located in an L-shaped medicine tube channel, and pulling retaining rings (34) are arranged at equal distances on the outside of the medicine tube (33), a tube penetration notch (116) is opened at a position corresponding to the L-shaped medicine tube channel on the right side of the shell (11), and the other end of the medicine tube (33) passes through the tube penetration notch (116) and extends to the right side of the shell (11) outside.

3. The analgesic pump for acute trauma patients according to claim 2, characterized in that: The device also comprises a drug tube pulling and buffering mechanism (4), wherein the drug tube pulling and buffering mechanism (4) comprises a buffering spring (41), the top of the L-shaped drug tube passage is fixedly connected to the top of the buffering spring (41), the bottom of the buffering spring (41) is fixedly connected to a buffering slide plate (42), the two sides of the buffering slide plate (42) are vertically slidably connected to the two sides of the vertical part of the L-shaped drug tube passage, and a wire clamp (45) is installed on the front side of the buffering slide plate (42), and the wire clamp (45) is slidably engaged with the drug tube (33).

4. The analgesic pump for acute trauma patients according to claim 1, characterized in that: The medicine bag extrusion power mechanism (5) comprises an extrusion cylinder (51), the left end of the horizontal partition (13) is fixedly connected to the bottom of the extrusion cylinder (51), a piston (52) is slidably connected in the extrusion cylinder (51), the bottom center of the piston (52) is fixedly connected to the top of a piston rod (54), the bottom end of the piston rod (54) is connected to the end of a bent rod (26), and a piston rod bottom pressure relief assembly is installed on the piston rod (54) and the piston (52).

5. The analgesic pump for use in acute trauma patients according to claim 4, characterized in that: The piston rod bottom pressure relief assembly comprises a pressure relief column (55), a conical pressure relief groove is provided at the top center of the piston (52), and a pressure relief through hole is provided in the middle of the piston rod (54), the pressure relief column (55) is vertically slidably connected in the pressure relief through hole, a conical pressure relief plug (53) matching the conical pressure relief groove is fixedly connected to the top of the pressure relief column (55), a pressure relief groove (56) is provided on the side of the pressure relief column (55), a pressure relief reset button (59) is fixedly connected to the bottom end of the pressure relief column (55), and a compression spring 2 (58) is sleeved on the column section of the pressure relief column (55) located between the piston rod (54) and the pressure relief reset button (59).

6. The analgesic pump for acute trauma patients according to claim 4, characterized in that: The drug delivery pump air mechanism (6) comprises a lifting plate (66), a bracket (61) is installed at the top of the control chamber, two vertical rails (65) are fixedly connected to the two sides of the bottom of the bracket (61), the two ends of the lifting plate (66) are slidably connected to the track grooves of the two vertical rails (65), and a compression spring three (67) is installed at the bottom of the track grooves of the two vertical rails (65). A support (62) is fixedly connected to the left side of the bottom of the bracket (61), and the support (62) is movably connected to the left end of the folding control plate (64) through a movable shaft (63). The folding control plate (64) is located on the upper side of the lifting plate (66), and an airbag pump air component is installed at the bottom of the lifting plate (66).

7. The analgesic pump for use by acute trauma patients according to claim 6, characterized in that: The airbag pump air assembly comprises an airbag (69) and a motor (618); the airbag (69) is installed at the bottom of the lifting plate (66) via an airbag seat (68); an air inlet check valve (610) is installed at the air inlet of the airbag (69); an air outlet of the airbag (69) is connected to one end of an air pipe (612) via an exhaust check valve (611); the other end of the air pipe (612) is connected to the top port of the extrusion cylinder (51); a motor (618) is installed at the bottom of the bracket (61) via a motor frame (619); an output shaft of the motor (618) is fixedly connected to a cam (617); and the cam (617) is located below the airbag (69).

8. The analgesic pump for acute trauma patients according to claim 7, characterized in that: The airbag pump air assembly also includes an airbag extrusion plate (614). The bottom of the lifting plate (66) is located at the front and rear sides of the airbag (69) and is fixedly connected to two vertical guide pillars (613). The two vertical guide pillars (613) are respectively vertically slidably connected to the front and rear sides of the airbag extrusion plate (614). The bottom of the airbag extrusion plate (614) is rotatably mounted with a wear-resistant wheel (616) via a wheel frame (615). The bottom of the wear-resistant wheel (616) is rollingly connected to the top of the cam (617).

9. The analgesic pump for acute trauma patients according to claim 6, characterized in that: The drug delivery amount adaptability control mechanism (7) comprises a control button column (78), the top of the bracket (61) is provided with five button holes at equal intervals in the horizontal direction, each button hole is respectively slidably connected with a control button column (78) in a vertical direction, the top of each control button column (78) respectively passes through a shell hole on the shell (11), the bottom of each control button column (78) is respectively fixedly connected to the top of a pressing column (710), each pressing column (710) is respectively slidably connected to a corresponding limiting circular hole at the bottom of the bracket (61), and the bottom end of each pressing column (710) is respectively threadedly connected with a stopper (711), and the column section of each pressing column (710) located on the inner side of the bracket (61) is respectively sleeved with a compression spring four (79), and the pressing column (710) is connected to a button column locking and unlocking assembly.

10. The analgesic pump for acute trauma patients according to claim 9, characterized in that: The button column locking and unlocking assembly comprises a sliding vertical plate (71), a vertical through groove (76) is respectively provided at the rear side of the bracket (61) corresponding to the position of each control button column (78), a sliding vertical plate (71) is slidably connected to the rear side of the bracket (61) in a transverse manner, a vertical guide groove (74) is respectively provided at the top of the sliding vertical plate (71) corresponding to the position of each control button column (78), a slope is respectively provided on the left side of the top of each vertical guide groove (74), and a positioning groove (75) is respectively provided on the left side of the bottom of the four vertical guide grooves (74) on the left side, a longitudinal sliding column (77) is respectively fixedly connected to the bottom end of each control button column (78), a rear end of each sliding column (77) passes through the top of the corresponding vertical guide groove (74) and is vertically slidably connected to the corresponding vertical through groove (76), the right end of the bracket (61) is connected to the right end of the tension spring (73), and the left end of the tension spring (73) is connected to the front side of the sliding vertical plate (71).

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