A pain pump for acute trauma patients

Abstract

The application discloses a kind of acute trauma patient using analgesia pump, it is related to medical instrument technical field, including functional shell, functional shell contains shell, the control cavity of upper side and the liquid cavity of lower side are separated by horizontal partition in shell, the bottom and right side in liquid cavity are separated by L-shaped partition L-shaped medicine pipe passage, the middle part of horizontal portion of L-shaped partition is provided with limit seat, further including medicine bag limit extrusion executing mechanism, medicine liquid supply mechanism, medicine bag extrusion power mechanism, medicine delivery pump air mechanism and medicine delivery volume adaptability control mechanism, medicine bag limit extrusion executing mechanism contains medicine bag side limit plate and opposite displacement control component, two left and right corresponding medicine bag side limit plates are transversely slidably connected in the liquid cavity, the acute trauma patient using analgesia pump can let acute trauma patient select corresponding analgesic liquid infusion speed according to own pain feeling, and medicine pipe used for medicine liquid infusion is conveniently arranged and installed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a pain pump for acute trauma patients. BACKGROUND

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

[0003] For acute trauma patients, since the trauma conditions of each patient are different, and the patient's constitution is also different, the specific drug delivery amount of the pain pump is not suitable for different acute trauma patients. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a pain pump for acute trauma patients, which can allow acute trauma patients to select the corresponding analgesic liquid infusion speed according to their own pain, the drug tube used for liquid infusion is convenient to arrange and install, and the drug tube can have a certain buffering effect when it is pulled, avoiding the drug tube connecting part between the pain pump and the infusion needle from being pulled off. The problems in the background art can be effectively solved.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a pain pump for acute trauma patients, comprising a functional shell, the functional shell comprises a shell body, the shell body is divided into an upper control cavity and a lower liquid cavity by a horizontal partition plate, an L-shaped drug tube channel is formed in the liquid cavity by an L-shaped partition plate at the bottom and the right side, a limiting seat is arranged in the middle of the horizontal part of the L-shaped partition plate, and the pain pump further comprises:

[0006] A medicine bag limiting and extruding execution mechanism comprises medicine bag side limiting plates and opposite displacement control assemblies, two left and right corresponding medicine bag side limiting plates are transversely and slidably connected in the liquid cavity, the top of each of the two medicine bag side limiting plates is connected with an opposite displacement control assembly, a telescopic plate is vertically and slidably connected between the two medicine bag side limiting plates, the top of the telescopic plate is connected with one end of a bent rod, and recesses corresponding to the bent rod are formed in the middle of the upper side of each medicine bag side limiting plate.

[0007] A liquid supply mechanism is installed between the two medicine bag side limiting plates.

[0008] A medicine bag extruding power mechanism is installed on the horizontal partition plate, and the bottom end of the medicine bag extruding power mechanism is connected with the other end of the bent rod.

[0009] A pump gas mechanism for drug delivery is installed in the control cavity, the pump gas mechanism for drug delivery is connected with the medicine bag extruding power mechanism, and a drug delivery amount adaptability control mechanism is installed on the pump gas mechanism for drug delivery.

[0010] The lateral displacement control assembly is used to drive the two medicine bag lateral limiting plates to approach or move away from each other, so that the distance between the two medicine bag lateral limiting plates is adjusted according to the width of the medicine bag, and the medicine bag is kept in a stable vertical state between the two medicine bag lateral limiting plates. The telescopic plate is telescoped with the distance between the two medicine bag lateral limiting plates. The medicine liquid supply mechanism is used to hold the medicine liquid. The medicine bag extrusion power mechanism drives the telescopic plate to move downward between the two medicine bag lateral limiting plates through the bent rod. The telescopic plate extrudes the medicine liquid supply mechanism, so that the medicine liquid supply mechanism infuses the analgesic liquid to the patient. The groove on the medicine bag lateral limiting plate avoids interfering with the downward movement of the bent rod. The medicine infusion pump air mechanism provides air pressure for the medicine bag extrusion power mechanism. The medicine infusion amount adaptive control mechanism cooperates with the medicine infusion pump air mechanism to control the speed of the air pressure provided for the medicine bag extrusion power mechanism, so as to control the extrusion speed of the telescopic plate on the medicine liquid supply mechanism, and thus control the infusion speed of the medicine liquid supply mechanism. The medicine infusion amount adaptive control mechanism is controlled by the acute trauma patient according to his actual perception, so that the acute trauma patient can select the corresponding analgesic liquid infusion speed according to his pain feeling, and the analgesic effect is good.

[0011] Further, the medicine liquid supply mechanism comprises a medicine bag, the medicine bag is arranged between the medicine bag lateral limiting plates, the bottom end of the medicine bag is connected to one end of a medicine tube through a hard end head, the hard end head is clamped with a limiting seat, the medicine tube is located in an L-shaped medicine tube channel, and the outer side of the medicine tube is provided with a pulling stop ring at equal distances. A pipe penetrating gap is formed in the right side of the shell corresponding to the position of the L-shaped medicine tube channel. The other end of the medicine tube extends to the right side of the shell through the pipe penetrating gap. The medicine bag holds analgesic liquid, and the medicine bag needs to discharge air. The analgesic liquid in the medicine bag is discharged by subsequent extrusion. The medicine tube does not contain air, which is safe to use. The limiting seat limits the hard end head, so that the medicine bag is stably installed between the two medicine bag lateral limiting plates. The telescopic plate is extruded downward, the analgesic liquid in the medicine bag enters the medicine tube, and can be infused outward. The two sides of the medicine bag are arc-shaped after being filled with liquid. The side where the two medicine bag lateral limiting plates approach each other is also provided with an arc limiting groove, which well limits the two sides of the medicine bag. At this time, the shape of the two ends of the telescopic plate is matched with the arc limiting groove. The medicine tube needs to be replaced after each use. If the medicine tube is used in the analgesic pump liquid extraction method in the prior art, the medicine tube needs to be controlled by a specific control device, and the medicine tube needs to be accurately installed to cooperate with the control device. The installation of the medicine tube is complicated and troublesome. The medicine tube in the present application only serves to deliver liquid, and only needs to be quickly placed in the L-shaped medicine tube channel. The medicine tube used for liquid infusion is convenient to arrange and install.

[0012] Further, the drug tube pulling buffer mechanism comprises a buffer spring, the top of the L-shaped drug tube channel is fixedly connected with the top end of the buffer spring, the bottom end of the buffer spring is fixedly connected with a buffer sliding plate, the two sides of the buffer sliding plate are vertically slidably connected with the two sides of the vertical part of the L-shaped drug tube channel, and the front side of the buffer sliding plate is provided with a wire clamp, and the wire clamp is slidably connected with the drug tube. Since the patient needs to carry the analgesia pump when moving, the distance between the analgesia pump and the patient inevitably changes, which inevitably causes the drug tube to be pulled. If the pulling force is too large, the drug tube connection part is easily disconnected or the drug tube is damaged. Therefore, the drug tube pulling buffer mechanism is arranged. According to the need of the length of the drug tube extending out of the shell, a suitable pulling stop ring is selected to be arranged below 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 and cannot be separated from the wire clamp. When the drug tube is pulled, the drug tube moves up relative to the wire clamp. Since the pulling stop ring is blocked by the bottom of the wire clamp, the buffer sliding plate is driven to move up in the vertical part of the L-shaped drug tube channel at this time, and the buffer spring is compressed. The elasticity of the buffer spring realizes the buffer of the drug tube when the drug tube is pulled, so as to avoid the disconnection of the drug tube connection part or the damage of the drug tube when the drug tube is pulled.

[0013] Further, the drug bag extrusion power mechanism comprises an extrusion cylinder, the left end of the horizontal partition plate is fixedly connected with the bottom of the extrusion cylinder, a piston is slidably connected in the extrusion cylinder, the bottom center of the piston is fixedly connected with the top end of a piston rod, the bottom end of the piston rod is connected with the end of a bent rod, and a piston rod bottom pressure relief assembly is arranged on the piston rod and the piston. The drug delivery pump air mechanism pumps air to the top of the extrusion cylinder through the top port of the top of the extrusion cylinder. The air pressure drives the piston and the piston rod to move downward relative to the extrusion cylinder. The piston rod drives the expansion plate to move downward through the bent rod, so as to extrude the drug bag. When the liquid medicine in the drug bag is completely extruded, the piston rod needs to stop moving downward. At this time, the piston rod bottom pressure relief assembly can relieve the air pressure in the extrusion cylinder, stop the piston rod from continuing to move downward, and reset the piston and the piston rod relative to the extrusion cylinder.

[0014] Further, the piston rod bottom pressure relief assembly comprises a pressure relief column, the top center of the piston is provided with a conical pressure relief groove, and the middle of the piston rod is provided with a pressure relief through hole, the pressure relief through hole is vertically and slidably connected with the pressure relief column, the top of the pressure relief column is fixedly connected with a conical pressure relief plug matched with the conical pressure relief groove, the side of the pressure relief column is provided with a pressure relief groove, the bottom end of the pressure relief column is fixedly connected with a pressure relief reset button, and the column segment between the pressure relief column and the pressure relief reset button is sleeved with a compression spring two. The compression spring two pushes the pressure relief reset button and the pressure relief column to move downward, the conical pressure relief plug is in the conical pressure relief groove, the conical pressure relief groove is blocked, the air pressure in the extrusion cylinder cannot be reduced, 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 plate, the compression spring two is compressed and shortened, the pressure relief column moves upward relative to the piston rod, the conical pressure relief plug moves upward relative to the piston, the conical pressure relief plug and the conical pressure relief groove have a pressure relief gap, the air at the top of the extrusion cylinder is discharged through the pressure relief gap and the pressure relief groove, and the pressure relief of the top of the extrusion cylinder is completed. When all the analgesic liquid in the medicine bag needs to be discharged, the pressure relief reset button is pushed upward, and the above process can be completed to discharge all the air at the top of the extrusion cylinder, and the exhaust reset process of the air cylinder composed of the extrusion cylinder, the piston and the piston rod is realized.

[0015] Further, the medicine delivery pump air mechanism comprises a lifting plate, a support is installed at the top of the control cavity, two vertical rails are fixedly connected at the bottom of the support respectively, the two ends of the lifting plate are slidably connected with the rail grooves of the two vertical rails respectively, a compression spring three is installed at the bottom of the rail groove of the two vertical rails, a support is fixedly connected at the left side of the bottom of the support, the left end of the folding control plate is movably connected with the support through a movable shaft, the folding control plate is located on the upper side of the lifting plate, and a gas bag pumping assembly is installed at the bottom of the lifting plate. The right end of the folding control plate is driven by the medicine delivery amount adaptive control mechanism to move downward relative to the movable shaft, the right end of the folding control plate drives the lifting plate to move downward along the vertical rail, the lifting plate top is always in stable contact with the lower side of the right end of the folding control plate under the elastic force of the compression spring three, the height of the lifting plate is changed to change the pumping efficiency of the gas bag pumping assembly, the support adopts a U-shaped structure, the opening of the support faces the front side, and other components of the medicine delivery pump air mechanism are installed on the support. The support is fixed in the control cavity by screws, and the whole can be assembled and then installed in the control cavity, which is convenient and fast.

[0016] Further, the air bag pump air assembly comprises an air bag and a motor, the bottom of the lifting plate is provided with the air bag through an air bag seat, the air inlet of the air bag is provided with an air inlet check valve, the air outlet of the air bag is connected with one end of an air pipe through an air outlet check valve, the other end of the air pipe is connected with the top port of the extrusion cylinder, the bottom of the support is provided with the motor through a motor bracket, the output shaft of the motor is fixedly connected with a cam, and the cam is located below the air bag. The motor bracket is used for installing the motor, the motor drives the cam to rotate, the protruding part of the cam can extrude the bottom of the air bag when the cam is located above the air bag, the air in the air bag enters the air pipe through the air outlet check valve and then enters the extrusion cylinder through the air pipe, so that the cylinder is elongated, after the protruding part of the cam is away from the air bag, the air bag is reset due to elastic deformation, air is sucked in through the air inlet check valve, and the cylinder can be continuously elongated by continuously pumping air into the extrusion cylinder through the motor. The continuous supply of the drug liquid is completed through the extrusion of the medicine bag. The air bag is installed at the bottom of the lifting plate through the air bag seat, and the lifting plate is driven to move downward when the right end of the folding control plate pushes the lifting plate downward, so that the air bag moves downward. The degree of extrusion of the air bag by the protruding part of the cam is increased, the pumping efficiency of the air bag is improved, and the infusion speed of the analgesic liquid is improved.

[0017] Further, the air bag pump air assembly further comprises an air bag extrusion plate, the bottom of the lifting plate is fixedly connected with two vertical guide columns at the front and rear positions of the air bag, the two vertical guide columns are vertically slidably connected with the front and rear sides of the air bag extrusion plate, and the bottom of the air bag extrusion plate is rotatably provided with a wear-resistant wheel through a wheel bracket. Since the continuous friction contact between the cam and the air bag will cause wear of the air bag, the vertical guide column, the air bag extrusion plate, the wheel bracket and the wear-resistant wheel are arranged, the friction contact between the cam and the air bag is changed into the rolling contact between the wear-resistant wheel and the cam, the wear of the air bag is avoided, the air bag extrusion plate is pushed upward by the wheel bracket and the wear-resistant wheel when the protruding part of the cam faces upward, the air bag is extruded by the air bag extrusion plate, the air bag is reset when the protruding part of the cam is away from the wear-resistant wheel, the air bag extrusion plate is pushed to move upward along the vertical guide column, the cam is continuously rotated, the air bag extrusion plate moves periodically upward and downward along the vertical guide column, the air bag is periodically extruded, the cylinder is elongated through air pressure control, the elongation speed of the cylinder is relatively stable due to the small pumping amount of the air bag and the easy compression of air, and the medicine bag can stably discharge the drug liquid.

[0018] Further, the medicine infusion amount adaptive control mechanism comprises control button columns, five button holes are arranged on the top of the support in equal distance laterally, a control button column is vertically and slidably connected in each button hole, the top of each control button column respectively penetrates through a shell hole on the shell, the bottom of each control button column is fixedly connected with the top of a pressing column, each pressing column is slidably connected with a corresponding limiting round hole on the bottom of the support, the bottom of each pressing column is threadedly connected with a stop seat, the column segment of each pressing column on the inner side of the support is sleeved with a compression spring four, and the pressing column is connected with a button column locking and unlocking assembly. The control button column is pressed downward, the control button column drives the stop seat to move downward through the pressing column, the bottom of the stop seat pushes the folding control plate to rotate relative to the movable shaft, because the distances between different stop seats and the movable shaft are different, the rotation angle of the folding control plate is different when the distances of different stop seats are the same, the rotation angle of the folding control plate relative to the movable shaft also changes the descending distance of the lifting plate, the descending of the left stop seat makes the rotation angle of the folding control plate larger and the descending distance of the lifting plate larger, at this time, the extrusion degree of the cam on the air bag is larger when the cam works, and the infusion of the analgesic liquid is accelerated, the descending of the right stop seat makes the rotation angle of the folding control plate smaller and the descending distance of the lifting plate smaller, at this time, the extrusion degree of the cam on the air bag is smaller when the cam works, and the infusion speed of the analgesic liquid is slowed down.

[0019] Further, the button column locking and unlocking assembly comprises a sliding vertical plate, vertical through grooves are formed in positions corresponding to each control button column on the rear side of the support, a sliding vertical plate is horizontally slidably connected to the inner rear side of the support, vertical guide grooves are formed in positions corresponding to each control button column on the top of the sliding vertical plate, an inclined slope is arranged on the left side of the top of each vertical guide groove, and a clamping groove is formed on the left side of the bottom of each of the four vertical guide grooves on the left side, the bottom end of each control button column is fixedly connected with a vertical sliding column, the rear end of each sliding column passes through the top of the corresponding vertical guide groove and is vertically slidably connected with the corresponding vertical through groove, the right end of the support is connected with the right end of the tension spring, and the left end of the tension spring is connected with the front side of the sliding vertical plate. The control button column is pressed downward, the pressing column moves downward relative to the support, the four compression springs are compressed, the sliding column on the control button column moves downward in the vertical guide groove and the vertical through groove, the sliding column pushes the sliding vertical plate to move leftward relative to the support due to the guidance of the inclined slope, the tension spring is elongated at this time, and the sliding column slides to the bottom of the vertical guide groove. If the clamping groove is formed on the left side of the bottom of the vertical guide groove, the tension spring is reset and shortened, the sliding vertical plate moves leftward relative to the support, the sliding column is in the clamping groove, and the four compression springs have an elongation elastic tendency at this time. However, the pressing column and the control button column cannot move upward relative to the support due to the limitation of the clamping groove on the sliding column, the blocking seat at the bottom of the pressing column can stably push the folding control plate, the folding control plate keeps the rotating angle relative to the movable shaft stable, the four control button columns on the left side can be divided into four gears due to the clamping grooves at the bottom of the four vertical guide grooves on the left side, and the infusion speed of the analgesic liquid can be changed by pressing different control button columns among the four control button columns on the left side. The infusion speed of the analgesic liquid decreases in sequence from left to right.

[0020] The bottom of the vertical guide groove on the far right side does not have a clamping groove, so that the sliding vertical plate moves leftward relative to the support after the control button column on the far right side is pressed, the four sliding columns on the left side are all located at the bottom of the vertical guide groove and are not in the clamping groove, the control button column on the far right side moves upward due to the elongation of the fourth compression spring on the far right side, the sliding vertical plate moves rightward relative to the support due to the reset and shortening of the tension spring, any clamping groove can be unlocked with the sliding column at this time, the upper sides of all the five blocking seats are close to the bottom of the support, and the folding control plate keeps the horizontal state at this time. The lifting plate slides upward along the vertical rail due to the elastic force of the third compression spring, the air bag moves upward with the lifting plate, the cam cannot press the air bag when rotating, and the infusion of the analgesic liquid can be stopped.

[0021] Compared with the prior art, the analgesic pump for acute trauma patients has the following beneficial effects:

[0022] 1. The infusion amount adaptive control mechanism in the analgesia pump used by acute trauma patients cooperates with the pump gas mechanism to control the speed of the air pressure provided by the medicine bag extrusion power mechanism, thereby controlling the speed of the extrusion of the telescopic plate on the medicine liquid supply mechanism, and also controlling the infusion speed of the medicine liquid supply mechanism, which can allow the acute trauma patients to select the corresponding infusion speed of the analgesic liquid according to their own pain feeling.

[0023] 2. The medicine pipe in the analgesia pump used by acute trauma patients only plays a role in conveying medicine liquid, and only needs to be quickly placed in the L-shaped medicine pipe channel, and the medicine pipe used for medicine liquid infusion is conveniently arranged and installed.

[0024] 3. When the medicine pipe is pulled, the medicine pipe moves upward relative to the wire clamp, and since the pulling stop ring is blocked by the bottom of the wire clamp, the buffer sliding plate is driven to move upward in the vertical part of the L-shaped medicine pipe channel at this time, and the buffer spring is compressed, and the elasticity of the buffer spring is used to realize the buffer when the medicine pipe is pulled, so as to avoid the disconnection of the connection of the medicine pipe or the damage of the medicine pipe when the medicine pipe is pulled. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the analgesia pump used by acute trauma patients of the present application;

[0026] Figure 2 It is a structural schematic view of the internal structure of the analgesia pump used by acute trauma patients of the present application;

[0027] Figure 3 It is a structural schematic view of the internal structure of the analgesia pump used by acute trauma patients of the present application; Figure 2

[0028] Figure 4 It is a front view structural schematic view of the analgesia pump used by acute trauma patients of the present application after removing the medicine liquid supply mechanism; Figure 2

[0029] It is a sectional structural schematic view of the medicine bag extrusion power mechanism in the analgesia pump used by acute trauma patients of the present application; Figure 5

[0030] It is a structural schematic view of the analgesia pump used by acute trauma patients of the present application; Figure 6 Figure 5

[0031] Figure 7 It is a structural schematic view of the pump gas mechanism and the infusion amount adaptive control mechanism in the analgesia pump used by acute trauma patients of the present application;

[0032] Figure 8 It is a bottom view structural schematic view of the analgesia pump used by acute trauma patients of the present application; Figure 7

[0033] It is a partial enlarged structural schematic view of the analgesia pump used by acute trauma patients of the present application; Figure 9 Figure 8 ​​​​​

[0034] Figure 10 For the invention Figure 8 Local enlarged structure diagram of D in the invention;

[0035] Figure 11 For the invention Figure 7 Rear side structure diagram of the invention;

[0036] Figure 12 For the invention Figure 7 Local front view structure diagram of the invention;

[0037] Figure 13 Sectional structure diagram of the telescopic plate in the analgesic pump for acute trauma patients in the invention;

[0038] Figure 14 Rear side structure diagram of the dismounting cover in the analgesic pump for acute trauma patients in the invention;

[0039] In the figure: 1 functional shell, 11 shell, 12 anti-misoperation groove, 13 horizontal partition, 14 L-shaped partition, 15 clamping seat, 16 fixed cover, 17 dismounting cover, 18 battery, 19 controller, 110 display screen, 111 baffle, 112 abutment plate, 113 buckle groove, 114 clamping leg, 115 hanging ring, 116 pipe-penetrating notch, 117 limiting seat, 2 medicine bag limiting and extruding execution mechanism, 21 horizontal rail, 22 medicine bag side limiting plate, 23 bidirectional lead screw, 24 lead screw nut, 25 knob, 26 bent lever, 27 telescopic plate, 271 female plate, 272 sliding cavity, 273 sliding plate, 274 blind hole, 275 compression spring I, 3 medicine liquid supply mechanism, 31 medicine bag, 32 hard end, 33 medicine pipe, 34 pulling baffle ring, 35 external connector, 4 medicine pipe pulling buffer mechanism, 41 buffer spring, 42 buffer sliding plate, 43 guide block, 44 guide groove, 45 wire clamp, 5 medicine bag extruding power mechanism, 51 extruding cylinder, 52 piston, 53 conical pressure relief plug, 54 piston rod, 55 pressure relief column, 56 pressure relief groove, 57 cylinder seat, 58 compression spring II, 59 pressure relief reset button, 510 contact switch, 6 pump air mechanism for medicine delivery, 61 support, 62 support seat, 63 movable shaft, 64 folding control plate, 65 vertical rail, 66 lifting plate, 67 compression spring III, 68 air bag seat, 69 air bag, 610 air inlet one-way valve, 611 air outlet one-way valve, 612 air pipe, 613 vertical guide column, 614 air bag extruding plate, 615 wheel frame, 616 wear-resistant wheel, 617 cam, 618 motor, 619 motor frame, 7 medicine delivery amount adaptability control mechanism, 71 sliding vertical plate, 72 spring frame, 73 tensile spring, 74 vertical guide groove, 75 clamping groove, 76 vertical through groove, 77 sliding column, 78 control button column, 79 compression spring IV, 710 pressing vertical column, 711 baffle seat. DETAILED DESCRIPTION

[0040] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0041] Embodiment one, please refer to Figures 1 to 14 The embodiment provides a technical solution: a pain pump for acute trauma patients, comprising a functional shell 1, the functional shell 1 comprises a shell 11, a horizontal partition plate 13, an L-shaped partition plate 14 and a limiting seat 117, the shell 11 is divided into an upper control cavity and a lower liquid cavity by the horizontal partition plate 13, the liquid cavity is divided into an L-shaped medicine pipe channel by the L-shaped partition plate 14 at the bottom and the right side, and the limiting seat 117 is arranged in the middle of the horizontal part of the L-shaped partition plate 14.

[0042] The functional shell 1 further comprises a hanging ring 115, the hanging ring 115 is integrally formed on one side of the top of the shell 11, and the hanging ring 115 is used for connecting a hanging rope, so that the pain pump can be hung and stretched when the patient moves.

[0043] Further comprising a medicine bag limiting and extruding execution mechanism 2, a medicine liquid supply mechanism 3, a medicine bag extruding power mechanism 5, a medicine delivery pump air mechanism 6 and a medicine delivery amount adaptability control mechanism 7.

[0044] The medicine bag limiting and extruding execution mechanism 2 comprises medicine bag side limiting plates 22, a bent rod 26, an extension plate 27 and an opposite displacement control assembly, two left and right corresponding medicine bag side limiting plates 22 are transversely and slidably connected in the liquid cavity, the top of the two medicine bag side limiting plates 22 is connected with the opposite displacement control assembly, the extension plate 27 is vertically and slidably connected between the two medicine bag side limiting plates 22, one end of the extension plate 27 is connected with one end of the bent rod 26, and recesses corresponding to the bent rod 26 are respectively formed in the middle of the upper side of the two medicine bag side limiting plates 22.

[0045] The telescopic plate 27 comprises a female plate 271, a sliding cavity 272, a sliding plate 273, a blind hole 274, and a compression spring 275. The female plate 271 is provided with two sliding cavities 272 at the left and right ends respectively. Two sliding plates 273 are horizontally slidably connected in the two sliding cavities 272 respectively. The middle of one end of the sliding plate 273 in the sliding cavity 272 is provided with a blind hole 274. One end of the compression spring 275 is connected in the blind hole 274. The other end of the compression spring 275 is connected with the middle of the inner end of the sliding cavity 272. The compression spring 275 pushes the sliding plate 273, so that the sliding plate 273 has a tendency to extend out of the sliding cavity 272. The outer ends of the two sliding plates 273 respectively contact one side of the two medicine bag side limiting plates 22 which are close to each other. With the change of the distance between the two medicine bag side limiting plates 22, the two sliding plates 273 also move relative to the female plate 271, so as to adapt to the distance between the two medicine bag side limiting plates 22, and make the telescopic plate 27 can comprehensively press down the medicine liquid supply mechanism 3.

[0046] The opposite displacement control assembly comprises a cross rail 21, a bidirectional screw rod 23, a screw nut 24, and a knob 25. The cross rail 21 is fixedly connected to the top rear side in the medicine liquid cavity. The top rear side of the two medicine bag side limiting plates 22 is horizontally slidably connected with the cross rail 21. The top of the two medicine bag side limiting plates 22 is fixedly connected with the screw nut 24. The medicine liquid cavity is rotatably connected with the horizontally distributed bidirectional screw rod 23 through the bearing at the top. The screw threads of the two ends of the bidirectional screw rod 23 are opposite, and the two ends of the bidirectional screw rod 23 are respectively connected with the two screw nuts 24. The left end of the bidirectional screw rod 23 is provided with the knob 25. The bidirectional screw rod 23 is rotated clockwise by the knob 25, and the screw threads of the bidirectional screw rod 23 and the screw nut 24 drive the two medicine bag side limiting plates 22 to move close to each other along the cross rail 21. The bidirectional screw rod 23 is rotated counterclockwise by the knob 25, and the screw threads of the bidirectional screw rod 23 and the screw nut 24 drive the two medicine bag side limiting plates 22 to move away from each other along the cross rail 21.

[0047] The medicine liquid supply mechanism 3 is installed between the two medicine bag side limiting plates 22.

[0048] The medicine liquid supply mechanism 3 comprises a medicine bag 31, a hard end 32, a medicine tube 33, and a pulling stop ring 34. The medicine bag 31 is arranged between the two medicine bag side limiting plates 22. The bottom end of the medicine bag 31 is connected with one end of the medicine tube 33 through the hard end 32. The hard end 32 is clamped with the limiting seat 117. The medicine tube 33 is arranged in the L-shaped medicine tube channel. The outer side of the medicine tube 33 is provided with the pulling stop ring 34 at equal distances. The right side of the shell 11 is provided with a pipe penetrating gap 116 corresponding to the position corresponding to the L-shaped medicine tube channel. The other end of the medicine tube 33 extends to the right side of the shell 11 through the pipe penetrating gap 116.

[0049] The medicine liquid supply mechanism 3 further comprises an external connector 35. One end of the medicine tube 33 arranged outside the shell 11 is connected with the external connector 35. The external connector 35 is used for connecting with the infusion needle.

[0050] The painkiller liquid is contained in the medicine bag 31, and the air in the medicine bag 31 needs to be discharged. Subsequently, the painkiller liquid in the medicine bag 31 is discharged by extrusion, and the medicine tube 33 does not contain air, which is safe to use. The limiting seat 117 limits the hard end 32, so that the medicine bag 31 is stably installed between the two medicine bag side limiting plates 22. The stretchable plate 27 is moved downward to extrude the medicine bag 31, and the painkiller liquid in the medicine bag 31 enters the medicine tube 33 and can be infused outward. The medicine bag 31 is arc-shaped on both sides after being filled with liquid. The side of the two medicine bag side limiting plates 22 that is close to each other is also provided with an arc limiting groove, which well limits the two sides of the medicine bag 31. At this time, the shape of the two ends of the stretchable plate 27 is matched with the arc limiting groove. The medicine tube 33 needs to be replaced after each use. If the medicine tube 33 is used in the way of extracting liquid by the analgesic pump in the prior art, the medicine tube 33 needs to be controlled by a specific control device. The medicine tube 33 needs to be accurately installed to cooperate with the control device. The installation of the medicine tube 33 is complicated and troublesome. The medicine tube 33 is only used for conveying liquid and only needs to be quickly placed in the L-shaped medicine tube channel. The medicine tube 33 used for liquid infusion is convenient to arrange and install.

[0051] The medicine bag extrusion power mechanism 5 is installed on the horizontal partition plate 13, and the bottom end of the medicine bag extrusion power mechanism 5 is connected to the other end of the bent rod 26.

[0052] The medicine bag extrusion power mechanism 5 comprises an extrusion cylinder 51, a piston 52, a piston rod 54, and a piston rod bottom pressure relief assembly. The bottom of the extrusion cylinder 51 is fixedly connected to the left end of the horizontal partition plate 13. The piston 52 is slidably connected in the extrusion cylinder 51. The top end of the piston rod 54 is fixedly connected to the bottom center of the piston 52. The bottom end of the piston rod 54 is connected to the end of the bent rod 26. The piston rod 54 and the piston 52 are provided with the piston rod bottom pressure relief assembly.

[0053] The medicine bag extrusion power mechanism 5 further comprises a cylinder seat 57. The cylinder seat 57 is installed at the bottom of the extrusion cylinder 51 and is fixedly installed at the left end of the horizontal partition plate 13 by screws.

[0054] The medicine infusion pump air mechanism 6 pumps air into the top of the extrusion cylinder 51 through the top port at the top of the extrusion cylinder 51. 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 stretchable plate 27 to move downward through the bent rod 26, thereby extruding the medicine bag 31. When the liquid in the medicine bag 31 is completely extruded, the piston rod 54 needs to stop moving downward. At this time, the piston rod bottom pressure relief assembly needs to relieve the air pressure in the extrusion cylinder 51 to stop the piston rod 54 from continuing to move downward. The piston rod bottom pressure relief assembly is also needed when the piston 52 and the piston rod 54 are moved upward relative to the extrusion cylinder 51 to reset.

[0055] The piston rod bottom pressure relief assembly comprises a conical pressure relief plug 53, a pressure relief column 55, a pressure relief groove 56, a compression spring two 58 and a pressure relief reset button 59, the top center of the piston 52 is provided with a conical pressure relief groove, and the middle of the piston rod 54 is provided with a pressure relief through hole, the pressure relief through hole is vertically and slidably connected with the pressure relief column 55, the top of the pressure relief column 55 is fixedly connected with the conical pressure relief plug 53 matched with the conical pressure relief groove, the side of the pressure relief column 55 is provided with the pressure relief groove 56, the bottom end of the pressure relief column 55 is fixedly connected with the pressure relief reset button 59, and the column segment between the pressure relief column 55 and the pressure relief reset button 59 is sleeved with the compression spring two 58. The compression spring two 58 pushes the pressure relief reset button 59 and the pressure relief column 55 to move downward, the conical pressure relief plug 53 is in the conical pressure relief groove, the conical pressure relief groove is blocked, the air pressure in the extrusion cylinder body 51 cannot be reduced, and the piston rod 54 continuously descends relative to the extrusion cylinder body 51. When the bottom of the pressure relief reset button 59 contacts the L-shaped partition plate 14, the compression spring two 58 is compressed and shortened, the pressure relief column 55 moves upward relative to the piston rod 54, the conical pressure relief plug 53 moves upward relative to the piston 52, the conical pressure relief plug 53 and the conical pressure relief groove have a pressure relief gap, the air at the top of the extrusion cylinder body 51 is discharged through the pressure relief gap and the pressure relief groove 56, and the pressure relief of the top of the extrusion cylinder body 51 is completed. When all the analgesic liquid in the medicine bag 31 needs to be discharged, the telescopic plate 27 is moved upward and reset, the pressure relief reset button 59 is pushed upward, and the above process is used to complete the discharge of all the air at the top of the extrusion cylinder body 51, and the exhaust reset process of the air cylinder composed of the extrusion cylinder body 51, the piston 52 and the piston rod 54 is realized.

[0056] The medicine bag extrusion power mechanism 5 further comprises a contact switch 510, and the contact switch 510 is installed on the upper side of the horizontal part of the L-shaped partition plate 14 corresponding to the position of the pressure relief reset button 59. When all the liquid in the medicine bag 31 is discharged, the pressure relief reset button 59 contacts the contact switch 510, the pressure relief reset button 59 stops moving downward, the compression spring two 58 is compressed and shortened, the air cylinder pressure relief stops elongation, and at this time the contact switch 510 is triggered by the pressure relief reset button 59 and is used to control the medicine pump air mechanism 6 to stop pumping air work.

[0057] The medicine pump air mechanism 6 is installed in the control cavity, connected with the medicine bag extrusion power mechanism 5, and provided with the medicine amount adaptability control mechanism 7.

[0058] The medicine delivery pump air mechanism 6 comprises a support 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 assembly, the top of the control cavity is provided with the support 61, the bottom of the support 61 is fixedly connected with two vertical rails 65 respectively, the two ends of the lifting plate 66 are slidably connected with the rail grooves of the two vertical rails 65 respectively, the bottom of the rail groove of the two vertical rails 65 is provided with the compression spring three 67, the top of the compression spring three 67 is connected with the lower side of the end of the lifting plate 66, the bottom of the support 61 is fixedly connected with the support 62, the support 62 is movably connected with 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 bottom of the lifting plate 66 is provided with the air bag pump air assembly. The medicine 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 makes the top of the lifting plate 66 always stably contact with the lower side of the right end of the folding control plate 64, and the height of the lifting plate 66 is changed to change the pump air efficiency of the air bag pump air assembly. The support 61 adopts a U-shaped structure, the opening of the support 61 faces the front side, other components of the medicine delivery pump air mechanism 6 are all mounted on the support 61, the support 61 is fixed in the control cavity through screws, and the whole can be assembled and then installed in the control cavity, so that the assembly is convenient and fast.

[0059] The air bag pump air assembly comprises an air bag seat 68, an air bag 69, an air inlet one-way valve 610, an air outlet one-way valve 611, an air pipe 612, a cam 617, a motor 618, a motor frame 619, the air bag 69 is installed on the bottom of the lifting plate 66 through the air bag seat 68, the air inlet of the air bag 69 is provided with the air inlet one-way valve 610, the air outlet of the air bag 69 is connected with one end of the air pipe 612 through the air outlet one-way valve 611, the other end of the air pipe 612 is connected with the top port of the extrusion cylinder body 51, the motor 618 is installed on the bottom of the support 61 through the motor frame 619, the output shaft of the motor 618 is fixedly connected with the cam 617, and the cam 617 is located below the air bag 69. The motor frame 619 is used for installing the motor 618, the motor 618 drives the cam 617 to rotate, the protruding part of the cam 617 can extrude the bottom of the air bag 69 when the cam 617 faces, the air in the air bag 69 enters the air pipe 612 through the air outlet one-way valve 611, enters the extrusion cylinder body 51 through the air pipe 612, and makes the cylinder elongate, after the protruding part of the cam 617 is away from the air bag 69, the air bag 69 is reset due to elastic deformation, air is sucked through the air inlet one-way valve 610, and the air in the air bag 69 is pumped into the extrusion cylinder body 51 through the air pipe 612, so that the cylinder is continuously elongated, the extrusion of the medicine bag is completed, and the continuous supply of the liquid medicine is completed. The air bag 69 is installed on the bottom of the lifting plate 66 through the air bag seat 68, when the lifting plate 66 is driven downward by the right end of the folding control plate 64, the air bag 69 is also driven downward, the extrusion degree of the air bag 69 by the protruding part of the cam 617 is increased each time, the air pumping efficiency of the air bag 69 is improved, and the infusion speed of the analgesic liquid can be improved.

[0060] The medicine delivery amount adaptive control mechanism 7 comprises control button columns 78, compression springs four 79, pressing columns 710, stoppers 711 and button column locking and unlocking assemblies. The top of the support 61 is provided with five button holes equidistantly laterally, each of which is vertically slidably connected with a control button column 78. The top of each control button column 78 penetrates a shell hole on the shell 11, and the bottom of each control button column 78 is fixedly connected with the top of a pressing column 710. Each pressing column 710 is slidably connected with a limiting circular hole on the bottom of the support 61, and the bottom of each pressing column 710 is threadedly connected with a stopper 711, which contacts the upper side of the folding control plate 64. The column segment of each pressing column 710 on the inner side of the support 61 is sleeved with a compression spring four 79, and the pressing column 710 is connected with a button column locking and unlocking assembly. When the control button column 78 is pressed downward, the control button column 78 drives the stopper 711 to move downward through the pressing column 710, and the bottom of the stopper 711 pushes the folding control plate 64 to rotate relative to the movable shaft 63. Since the distances between different stoppers 711 and the movable shaft 63 are different, when the distances of different stoppers 711 are the same, the rotation angles of the folding control plate 64 are different, and the rotation angles of the folding control plate 64 relative to the movable shaft 63 also change the descending distances of the lifting plate 66. The descending of the left stopper 711 makes the rotation angle of the folding control plate 64 larger and the descending distance of the lifting plate 66 larger, and at this time, the extrusion degree of the air bag 69 by the cam 617 is larger, which also accelerates the infusion of the analgesic liquid. The descending of the right stopper 711 makes the rotation angle of the folding control plate 64 smaller and the descending distance of the lifting plate 66 smaller, and at this time, the extrusion degree of the air bag 69 by the cam 617 is smaller, which also slows down the infusion speed of the analgesic liquid.

[0061] The functional shell 1 further comprises an anti-mis-touch sunken groove 12. The top of the shell 11 is provided with the anti-mis-touch sunken groove 12, and the top of each of the five control button columns 78 extends into the anti-mis-touch sunken groove 12. The anti-mis-touch sunken groove 12 can avoid the top of the control button column 78 from being mis-touched.

[0062] The button column locking and unlocking assembly comprises a sliding vertical plate 71, a spring frame 72, a tension spring 73, a vertical guide slot 74, a clamping groove 75, a vertical through slot 76 and a sliding column 77. The vertical through slots 76 are arranged at positions corresponding to the control button columns 78 on the rear side of the support 61. The sliding vertical plate 71 is slidably connected to the rear side of the support 61. The vertical guide slots 74 are arranged at positions corresponding to the control button columns 78 on the top of the sliding vertical plate 71. The left side of the top of each vertical guide slot 74 is provided with a slope. The left side of the bottom of the four vertical guide slots 74 on the left side is provided with a clamping groove 75. The bottom end of each control button column 78 is fixedly connected with a longitudinal sliding column 77. The rear end of each sliding column 77 passes through the top of the corresponding vertical guide slot 74 and is vertically slidably connected with the corresponding vertical through slot 76. The right end of the support 61 is connected with the right end of the tension spring 73 through the spring frame 72. The left end of the tension spring 73 is connected with the front side of the sliding vertical plate 71. The control button column 78 is pressed downward. The pressing column 710 moves downward relative to the support 61. The compression spring four 79 is compressed. The sliding column 77 on the control button column 78 moves downward in the vertical guide slot 74 and the vertical through slot 76. The sliding column 77 pushes the sliding vertical plate 71 to move left relative to the support 61 due to the guidance of the slope. At this time, the tension spring 73 is elongated. When the sliding column 77 slides to the bottom of the vertical guide slot 74, if the clamping groove 75 is arranged on the left side of the bottom of the vertical guide slot 74, the tension spring 73 is reset and shortened. The sliding vertical plate 71 is pulled to move left relative to the support 61. The sliding column 77 is in the clamping groove 75. At this time, the compression spring four 79 has an elastic tendency of elongation. However, the pressing column 710 and the control button column 78 cannot move upward relative to the support 61 due to the limiting of the clamping groove 75 to the sliding column 77. The blocking seat 711 at the bottom of the pressing column 710 can stably push the folding control plate 64, so that the rotating angle of the folding control plate 64 relative to the movable shaft 63 is kept stable. Since the four vertical guide slots 74 on the left side have the clamping grooves 75, the four control button columns 78 on the left side can be divided into four gears. Different control button columns 78 among the four control button columns 78 on the left side can change the infusion speed of the analgesic liquid. The infusion speed of the analgesic liquid decreases in sequence from left to right.

[0063] The bottom of the rightmost vertical guide slot 74 is not provided with a clamping groove 75, so after pressing the rightmost control button column 78, the sliding vertical plate 71 moves left relative to the support 61, and the left four sliding columns 77 are located at the bottom of the vertical guide slot 74 and are not in the clamping groove 75. Loosen the rightmost control button column 78, and because the rightmost compression spring four 79 is elongated, the rightmost control button column 78 moves up, and because the extension spring 73 resets and shortens, the sliding vertical plate 71 moves right relative to the support 61, so that any clamping groove 75 and sliding column 77 are unlocked, and at this time the upper side of all five blocking seats 711 is close to the bottom of the support 61, no longer having a downward pushing force on the folding control plate 64, at this time the folding control plate 64 remains in a horizontal state, and the lifting plate 66 slides upward along the vertical rail 65 due to the elastic force of the compression spring three 67. When the cam 617 rotates, it can no longer press the air bag 69, and the infusion of analgesic liquid can be stopped.

[0064] The functional shell 1 also includes a card seat 15, a fixed cover 16, a disassembly cover 17, a battery 18, a controller 19, a display screen 110, a baffle 111, a stop plate 112, a buckle slot 113, and a clamping foot 114. The front top of the shell 11 is fixedly installed with the fixed cover 16 through screws at a position corresponding to the control cavity, the middle part of the fixed cover 16 is provided with a display screen 110 and control buttons, the control cavity is internally provided with a battery 18 on the right side, the battery 18 is provided with a charging hole, the charging hole penetrates through the side of the shell 11, the control cavity is internally provided with a controller 19 at the bottom, the controller 19 is electrically connected with the display screen 110, the battery 18 supplies power to the controller 19 and the display screen 110, and the contact switch 510 is also electrically connected with the controller 19. The controller 19 controls the operation of the motor 618, and the control method adopts the prior art. The inner wall of the liquid cavity is provided with a plurality of card seats 15, and the specific number of the card seats 15 is generally four. The rear side of the disassembly cover 17 is provided with a clamping foot 114 corresponding to the clamping of the card seat 15. The disassembly cover 17 and the shell 11 are detachably installed by means of the cooperation of the card seat 15 and the clamping foot 114. The disassembly cover 17 is used to cover the liquid cavity. In order to facilitate the removal of the disassembly cover 17, the disassembly cover 17 is provided with a buckle slot 113 on both sides. Since the size of the pipe penetrating notch 116 is large, external dust is easy to enter the L-shaped pipe channel. Therefore, the position corresponding to the pipe penetrating notch 116 of the disassembly cover 17 is provided with a baffle 111. After the disassembly cover 17 is installed, the baffle 111 on the disassembly cover 17 blocks the pipe penetrating notch 116. It should be noted that the baffle 111 cannot press the pipe 33 tightly, so that the pipe 33 can move freely in the pipe penetrating notch 116. In order to stably place the hard end 32 in the limiting seat 117, the rear side of the disassembly cover 17 is also provided with a stop plate 112 corresponding to the position of the limiting seat 117. After the disassembly cover 17 is installed, the stop plate 112 extends into the limiting seat 117 to press the hard end 32 tightly, so as to avoid the loosening of the hard end 32 and the limiting seat 117.

[0065] The shell 11 is divided into a control cavity on the upper side and a liquid cavity on the lower side by a horizontal partition 13

[0066] In use, the displacement control assembly is used to drive the two bag side limit plates 22 to approach or move away from each other, so that the distance between the two bag side limit plates 22 is adjusted according to the width of the bag, ensuring that the bag is in a stable vertical state between the two bag side limit plates 22, the expansion plate 27 expands or contracts with the distance between the two bag side limit plates 22, the liquid supply mechanism 3 is used to hold the liquid, the bag extrusion power mechanism 5 drives the expansion plate 27 to move downward between the two bag side limit plates 22 through the bent rod 26, the expansion plate 27 extrudes the liquid supply mechanism 3, and the liquid supply mechanism 3 infuses the analgesic liquid to the patient, the grooves on the bag side limit plate 22 avoid interfering with the downward movement of the bent rod 26, the infusion pump air mechanism 6 provides air pressure for the bag extrusion power mechanism 5, and the infusion volume adaptive control mechanism 7 cooperates with the infusion pump air mechanism 6 to control the speed of the air pressure provided for the bag extrusion power mechanism 5, thereby controlling the extrusion speed of the expansion plate 27 to the liquid supply mechanism 3, and the infusion speed of the liquid supply mechanism 3, the infusion volume adaptive control mechanism 7 is controlled by the acute trauma patient according to his actual perception, and the acute trauma patient can select the corresponding analgesic infusion speed according to his pain, and the analgesic effect is good.

[0067] Embodiment two, please refer to Figures 1 to 14 The embodiment provides a technical scheme: an analgesic pump for acute trauma patients, and the embodiment is a further explanation of the structure of embodiment one:

[0068] The air bag pump air assembly further comprises vertical guide posts 613, an air bag pressing plate 614, a wheel frame 615 and a wear-resistant wheel 616. The bottom of the lifting plate 66 is fixedly connected with two vertical guide posts 613 at the front and rear positions of the air bag 69, respectively. The two vertical guide posts 613 are vertically slidably connected with the front and rear sides of the air bag pressing plate 614, respectively. The vertical guide posts 613 guide the movement direction of the air bag pressing plate 614. The bottom of the air bag pressing plate 614 is rotatably connected with the wear-resistant wheel 616 through the wheel frame 615. The bottom of the wear-resistant wheel 616 is rollingly connected with the top of the cam 617. Since the continuous frictional contact between the cam 617 and the air bag 69 will wear the air bag 69, the vertical guide posts 613, the air bag pressing plate 614, the wheel frame 615 and the wear-resistant wheel 616 are arranged to change the frictional contact between the cam 617 and the air bag 69 into the rolling contact between the wear-resistant wheel 616 and the cam 617, so as to avoid wearing the air bag 69. When the protruding part of the cam 617 faces upward, the air bag pressing plate 614 is pushed upward through the wheel frame 615 and the wear-resistant wheel 616, the air bag pressing plate 614 presses the air bag 69, the protruding part of the cam 617 is away from the wear-resistant wheel 616, the air bag 69 is reset, the air bag pressing plate 614 is pushed to move upward along the vertical guide post 613, the cam 617 continuously rotates, the air bag pressing plate 614 periodically moves upward and downward along the vertical guide post 613, and the periodic pressing of the air bag 69 is completed. The air cylinder is controlled by air pressure. Since air is easy to be compressed and the air bag 69 has a small air pumping amount each time, the extension speed of the air cylinder is relatively stable, which is beneficial to the stable discharge of the medicine bag 31.

[0069] In example three, please refer to Figures 1 to 14 The technical scheme of the present embodiment is as follows: a pain pump for acute trauma patients, which is substantially the same as that of example two, and the difference lies in that:

[0070] The medicine tube pulling buffer mechanism 4 further comprises a buffer spring 41, a buffer sliding plate 42 and a wire clamp 45. The top of the L-shaped medicine tube channel is fixedly connected with the top end of the buffer spring 41. The bottom end of the buffer spring 41 is fixedly connected with the buffer sliding plate 42. The two sides of the buffer sliding plate 42 are vertically slidably connected with the vertical parts of the L-shaped medicine tube channel. The front side of the buffer sliding plate 42 is provided with the wire clamp 45, which is slidably connected with the medicine tube 33.

[0071] The medicine tube pulling buffer mechanism 4 further comprises a guide block 43 and a guide groove 44. The vertical parts of the L-shaped medicine tube channel are respectively provided with two vertical guide grooves 44. The two sides of the buffer sliding plate 42 are respectively fixedly connected with two guide blocks 43. The two guide blocks 43 are respectively vertically slidably connected with the two corresponding guide grooves 44.

[0072] Since the patient needs to carry the analgesic pump when moving, the distance between the analgesic pump and the patient changes inevitably, which inevitably pulls the medicine tube 33, and if the pulling force is too large, the medicine tube 33 is easily disconnected or damaged. Therefore, the medicine tube pulling buffer mechanism 4 is arranged, according to the length of the medicine tube 33 extending out of the shell 11, the appropriate pulling stop ring 34 is selected to be below 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 and 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 stop ring 34 is blocked by the bottom of the wire clamp 45, at this time the buffer slide plate 42 is driven to move up in the vertical part of the L-shaped medicine tube channel, the buffer spring 41 is compressed, and the buffer spring 41 is used to realize the buffer of the medicine tube 33 when being pulled, so as to avoid the disconnection of the medicine tube 33 or the damage of the medicine tube 33 when the medicine tube 33 is pulled.

[0073] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0074] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An analgesic pump for acute trauma patients, comprising a functional housing (1), the functional housing (1) including a housing (11), the housing (11) being divided into an upper control chamber and a lower medication chamber by a horizontal partition (13), the bottom and right side of the medication chamber being separated by an L-shaped medication channel by an L-shaped partition (14), the horizontal portion of the L-shaped partition (14) being provided with a limiting seat (117), characterized in that, Also includes: The medicine bag limiting and squeezing actuator (2) includes a medicine bag side limiting plate (22) and a counter-displacement control component. Two medicine bag side limiting plates (22) are laterally slidably connected in the medicine liquid chamber. The counter-displacement control component is connected to the top of each of the two medicine bag side limiting plates (22). A telescopic plate (27) is vertically slidably connected between the two medicine bag side limiting plates (22). One end of a bent rod (26) is connected to the top of the telescopic plate (27). The upper middle part of the medicine bag side limiting plate (22) is provided with grooves corresponding to the bent rod (26). The liquid medicine supply mechanism (3) is installed between the two medicine bag side limiting plates (22); The medicine bag squeezing power mechanism (5) is installed on the horizontal partition (13), and the bottom end of the medicine bag squeezing power mechanism (5) is connected to the other end of the bent rod (26); The drug delivery pumping mechanism (6) is installed in the control chamber and is connected to the drug bag squeezing power mechanism (5). The drug delivery pumping mechanism (6) is equipped with a drug delivery volume adaptive control mechanism (7). The medicine bag squeezing power mechanism (5) includes a squeezing cylinder (51), the left end of the horizontal partition (13) is fixedly connected to the bottom of the squeezing cylinder (51), a piston (52) is slidably connected inside the squeezing cylinder (51), the bottom center of the piston (52) is fixedly connected to the top end of the piston rod (54), the bottom end of the piston rod (54) is connected to the end of the bent rod (26), and a piston rod bottom pressure relief assembly is installed on the piston rod (54) and the piston (52); The drug delivery pump mechanism (6) includes a lifting plate (66), a bracket (61) is installed at the top of the control cavity, two vertical rails (65) are fixedly connected to the bottom sides of the bracket (61), the two ends of the lifting plate (66) are slidably connected to the rail grooves of the two vertical rails (65), and compression springs (67) are installed at the bottom of the rail grooves of the two vertical rails (65). A support (62) is fixedly connected to the bottom left side 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 assembly is installed at the bottom of the lifting plate (66). The airbag pump assembly includes an airbag (69) and a motor (618). The bottom of the lifting plate (66) is fitted with an airbag (69) via an airbag seat (68). An air inlet valve (610) is installed at the air inlet of the airbag (69). The air outlet of the airbag (69) is connected to one end of an air pipe (612) via an exhaust valve (611). The other end of the air pipe (612) is connected to the top port of the compression cylinder (51). The bottom of the bracket (61) is fitted with a motor (618) via a motor frame (619). The output shaft of the motor (618) is fixedly connected to a cam (617), which is located below the airbag (69). The airbag pump assembly also includes an airbag compression plate (614). The bottom of the lifting plate (66) is fixedly connected to two vertical guide columns (613) at the front and rear sides of the airbag (69). The two vertical guide columns (613) are vertically slidably connected to the front and rear sides of the airbag compression plate (614). The bottom of the airbag compression plate (614) is rotatably mounted with a wear-resistant wheel (616) through a wheel frame (615). The bottom of the wear-resistant wheel (616) is rollingly connected to the top of the cam (617). The drug delivery adaptive control mechanism (7) includes a control button post (78). The top of the bracket (61) is provided with five button holes at equal intervals in the horizontal direction. Each button hole is vertically slidably connected to a control button post (78). The top of each control button post (78) passes through the shell hole on the housing (11). The bottom of each control button post (78) is fixedly connected to the top of the pressing column (710). Each pressing column (710) is slidably connected to the corresponding limiting round hole at the bottom of the bracket (61). The bottom end of each pressing column (710) is threadedly connected to a stop seat (711). The column segment of each pressing column (710) located inside the bracket (61) is sleeved with a compression spring four (79). The pressing column (710) is connected to the button post locking and unlocking assembly.

2. The analgesia pump for acute trauma patients according to claim 1, characterized in that: The liquid medicine supply mechanism (3) includes a medicine bag (31), and the medicine bag (31) is provided 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 a rigid end (32). The rigid end (32) is engaged with the limiting seat (117). The medicine tube (33) is located in the L-shaped medicine tube channel, and the outer side of the medicine tube (33) is provided with traction retaining rings (34) at equal intervals. The right side of the housing (11) is provided with a tube-penetrating notch (116) corresponding to the L-shaped medicine tube channel. The other end of the medicine tube (33) extends through the tube-penetrating notch (116) to the outside of the right side of the housing (11).

3. The analgesia pump for acute trauma patients according to claim 2, characterized in that: It also includes a drug tube pulling buffer mechanism (4), which includes a buffer spring (41). The top of the buffer spring (41) is fixedly connected to the top of the L-shaped drug tube channel, and a buffer slide plate (42) is fixedly connected to the bottom of the buffer spring (41). The two sides of the buffer slide plate (42) are vertically slidably connected to the two 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 plate (42), and the wire clamp (45) is slidably engaged with the drug tube (33).

4. The analgesia pump for acute trauma patients according to claim 1, characterized in that: The piston rod bottom pressure relief assembly includes 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) that cooperates with 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 (58) is sleeved on the column section of the pressure relief column (55) between the piston rod (54) and the pressure relief reset button (59).

5. The analgesia pump for acute trauma patients according to claim 1, characterized in that: The button post locking and unlocking assembly includes a sliding plate (71). The rear side of the bracket (61) is provided with vertical through slots (76) corresponding to the position of each control button post (78). The sliding plate (71) is slidably connected to the rear side of the bracket (61). The top of the sliding plate (71) is provided with vertical guide slots (74) corresponding to the position of each control button post (78). The top left side of each vertical guide slot (74) is provided with a slope. The bottom left side of the four vertical guide slots (74) on the left side is provided with a locking slot (75). The bottom end of each control button post (78) is fixedly connected with a longitudinal sliding post (77). The rear end of each sliding post (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 of the bracket (61) is connected to the right end of the tension spring (73). The left end of the tension spring (73) is connected to the front side of the sliding plate (71).

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