A portable multifunctional drug delivery device

Abstract

The present invention discloses a portable multifunctional drug delivery device, which belongs to the field of drug delivery devices and comprises a fixed tube, a nozzle is fixedly mounted on the top of the fixed tube, a piston plate is sealingly and slidably mounted in the fixed tube, the piston plate is in contact with the top wall of the inner cavity of the fixed tube, a connecting rod is fixedly mounted on the bottom of the piston plate, the other end of the connecting rod passes through the fixed tube and is fixedly connected with a push plate, the connecting rod is sealingly and slidably connected to the fixed tube, and further comprises: a drug storage mechanism, the drug storage mechanism comprises a liquid storage tank fixedly mounted on one side of the fixed tube; the liquid drug can be heated before use so that the temperature of the liquid drug changes so that the human body can adapt to it, and the situation that the liquid drug is usually relatively cool and causes temporary discomfort to the user can be effectively avoided, thereby effectively improving the user's absorption effect of the liquid drug and avoiding the situation that the user suffers from discomfort and causes the drug to be wasted.

Description

Technical Field

[0001] The present invention relates to the field of drug delivery devices, and more particularly to a portable multifunctional drug delivery device. Background Art

[0002] A portable drug delivery device is a device that is compact in design, easy to carry and has multiple drug delivery functions. Many types of drugs will be quickly destroyed in the esophagus and are therefore not suitable for oral administration. Absorption through the nasal mucosa is a solution. The mucosa of the nasal cavity can be used as a convenient delivery station for drugs aimed at other parts of the body. The nasal cavity is a difficult part of the body to use drugs. In order to enter the nasal cavity, the drug must be introduced into the nasal vestibule through the nostrils, then sent to the back of the nasal cavity, and then through the narrow cleft of the nasal valve.

[0003] The spray drug delivery device in the prior art still has the problems of relatively complex structure, inconvenient operation or poor quantitative drug delivery when used for nasal spray drug delivery.

[0004] The Chinese patent with authorization announcement number: CN111249607A specifically discloses a drug delivery device, which has a flange at a predetermined position on the side of the piston, which can be used to cooperate with a dosage adjustment ring to control the piston advancement amount, thereby controlling the dosage and achieving dosage adjustment. The drug delivery device has a simple structure, is easy to operate, is convenient for controlling the dosage and is easy to carry.

[0005] In view of the above problems, existing patents have provided solutions. However, when the liquid medicine is sprayed into the nasal cavity, since the medicine is cold, it will cause the user to experience temporary discomfort and local discomfort. Especially when used in winter, the cooler medicine will also cause the blood vessels in the nasal cavity to contract and easily irritate the user's nasal mucosa, causing the user to sneeze, runny nose and cough, which will lead to the inability to absorb the drug components and the waste of the drug. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a portable multifunctional drug delivery device, which can heat the liquid medicine before use, so that the temperature of the liquid medicine changes to facilitate the human body to adapt, and can effectively avoid the situation where the liquid medicine is usually cool and causes temporary discomfort to the user, thereby effectively improving the user's absorption of the liquid medicine and avoiding the situation where the user suffers from discomfort and causes the medicine to be wasted.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A portable multifunctional drug delivery device comprises a fixed tube, a nozzle is fixedly mounted on the top of the fixed tube, a piston plate is sealingly and slidably mounted in the fixed tube, the piston plate is in contact with the top wall of the inner cavity of the fixed tube, a connecting rod is fixedly mounted on the bottom of the piston plate, the other end of the connecting rod passes through the fixed tube and is fixedly connected to a push plate, the connecting rod is sealingly and slidably connected to the fixed tube,

[0009] Also includes:

[0010] The medicine storage mechanism comprises a liquid storage box fixedly installed on one side of the fixed tube, the bottom wall of the inner cavity of the fixed tube is fixedly connected with a liquid storage cylinder, a movable plate is sealingly and slidably installed on the inner wall of the liquid storage cylinder, a vertical rod is fixedly connected to the top of the movable plate, the vertical rod is fixedly connected to the bottom of the piston plate, a suction pipe is fixedly installed on the side wall of the liquid storage cylinder, the other end of the suction pipe passes through the fixed tube and the liquid storage box, a discharge pipe is arranged above the suction pipe, the other end of the discharge pipe passes through the fixed tube and is connected with the top of the piston plate, a discharge port is opened on the top wall of the inner cavity of the fixed tube, the discharge port is connected with the inside of the nozzle, a heat exchange mechanism is arranged in the fixed tube, and the heat exchange mechanism cooperates with the medicine storage mechanism.

[0011] Furthermore, the heat exchange mechanism includes a top plate fixedly connected to the inner wall of the fixed tube, a bottom plate fixedly connected to the rod wall of the vertical rod, an elastic air bag fixedly installed between the bottom plate and the top plate, a circulation port is provided in the piston plate, a first telescopic tube is fixedly installed at the suction end of the elastic air bag, the other end of the first telescopic tube passes through the top plate and the piston plate and is connected to the circulation port, a spiral hole is provided in the side wall of the fixed tube, a second telescopic tube is fixedly installed at the other end of the circulation port, the other end of the second telescopic tube passes through the piston plate and the fixed tube and is fixedly connected to the top end of the spiral hole, and a circulation hole is provided in the side wall of the liquid storage cylinder.

[0012] Furthermore, a U-shaped hole is provided in the bottom of the fixed tube and the liquid storage cylinder, and the two ends of the U-shaped hole are fixedly connected to the bottom end of the spiral hole and one end of the circulation hole respectively; a groove is provided at the bottom of the fixed tube, and a third telescopic tube is installed in the groove; the top end of the third telescopic tube passes through the fixed tube and the liquid storage cylinder and is fixedly connected to the other end of the circulation hole; a heating chamber is provided in the push plate, and the bottom end of the third telescopic tube passes through the push plate and is connected to the heating chamber, and a heater is fixedly installed on the bottom wall of the inner chamber of the heating chamber.

[0013] Furthermore, an L-shaped rod is sealingly and slidably mounted on the liquid storage tank, a through hole is provided in the L-shaped rod, and the bottom end of the through hole is connected to the heating chamber.

[0014] Furthermore, the bottom end of the L-shaped rod is fixedly connected to the push plate, a stirring ring is rotatably installed on the inner wall of the liquid storage tank, a circular frame is fixedly connected to the inner wall of the stirring ring, a slider is fixedly connected to the inner wall of the circular frame, and a spiral groove compatible with the slider is opened on the rod wall of the L-shaped rod.

[0015] Furthermore, a cross plate is rotatably mounted on one side of the bottom of the bottom plate, an exhaust pipe is fixedly mounted on the air outlet end of the elastic airbag, and the bottom end of the exhaust pipe penetrates the bottom plate and extends to one side of the cross plate.

[0016] Furthermore, ventilation holes are provided in the connecting rod, and the ventilation holes are communicated with the inner cavity of the fixing tube and the heating cavity.

[0017] Furthermore, a spring is fixedly installed between the bottom of the piston plate and the top of the top plate, and the elastic force of the spring is greater than the elastic force of the elastic airbag.

[0018] Furthermore, the distance between the movable plate and the bottom end of the liquid discharge pipe is greater than the length of the spring, and the inner cavities of the liquid discharge port, the liquid discharge pipe and the liquid suction pipe are all equipped with one-way valves.

[0019] Furthermore, the distance between the top of the ventilation hole and the bottom of the inner cavity of the fixed tube is greater than the length of the spring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) This solution uses an elastic airbag to absorb the heated gas in the heating chamber and flows it through the circulation port, spiral hole and circulation hole, which can effectively improve the heating effect of the liquid medicine, making the liquid medicine change temperature so that the human body can adapt to it. It can effectively avoid the situation where the liquid medicine is usually cool and causes temporary discomfort to the user, and avoid the liquid medicine irritating the user's nasal mucosa, thereby causing the user to sneeze, runny nose and cough.

[0022] (2) In this scheme, the movable plate moves upward to suck the liquid medicine in the liquid storage tank through the suction tube. At this time, the liquid medicine in the liquid storage tank can be pumped into the liquid storage cylinder, which plays a role in automatic drug storage and quantitative storage of liquid medicine. It is convenient for the user to continue to use it or use it next time, which can effectively save time and avoid the situation where repeated operations are required each time, thereby effectively improving the use efficiency.

[0023] (3) In this solution, when the pressure inside the liquid storage tank decreases, air will be sucked in through the through hole, so that the gas heated in the heating chamber can be sucked into the inner cavity of the liquid storage tank through the through hole, thereby heating the inner cavity of the liquid storage tank, thereby heating the liquid medicine in the liquid storage tank, which can effectively improve the preheating effect of the liquid medicine in the liquid storage tank and avoid the situation in the past where the liquid medicine is relatively cold, causing discomfort to the user.

[0024] (4) In this scheme, the upward movement of the L-shaped rod will cause the stirring ring to rotate to stir the liquid medicine in the liquid storage tank. At the same time, the heated gas sucked in through the through hole can effectively improve the contact effect between the liquid medicine in the liquid storage tank and the sucked hot gas, and make the temperature in the liquid medicine evenly dispersed, thereby effectively improving the heating efficiency of the liquid medicine, and making the heated liquid medicine more convenient for users to use.

[0025] (5) The elastic airbag of this scheme drives the cross plate to rotate through the exhaust pipe, so that the gas discharged from the exhaust pipe can be evenly diffused in the inner cavity of the fixed pipe. At the same time, the cross plate will be driven upward by the bottom plate during the rotation process, which can improve the diffusion effect of the gas, thereby effectively improving the fluidity of the gas in the fixed pipe and maintaining the temperature of the inner cavity of the fixed pipe as a whole.

[0026] (6) In this solution, the downward movement of the piston plate will squeeze the gas in the inner cavity of the fixed tube and discharge it into the inner cavity of the heating chamber again through the ventilation holes, so that the heated gas can be effectively utilized, playing a role in utilizing existing resources, and accelerating the heating rate of the heater for the gas in the heating chamber, thereby effectively reducing energy consumption and further effectively improving the overall heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the front side of the present invention;

[0028] Figure 2 It is a schematic diagram of the overall structure of the bottom surface of the present invention;

[0029] Figure 3 It is an overall cross-sectional view of the present invention;

[0030] Figure 4 For the present invention Figure 3 A magnified view of the structure of the middle part A;

[0031] Figure 5 For the present invention Figure 3 A magnified view of the structure of the middle B section;

[0032] Figure 6 It is a structural schematic diagram of a circular frame of the present invention;

[0033] Figure 7It is a structural schematic diagram of the cross plate of the present invention.

[0034] Description of the numbers in the figure:

[0035] 1. Fixed pipe; 2. Nozzle; 3. Piston plate; 4. Connecting rod; 5. Push plate; 6. Spiral groove; 7. Liquid discharge port; 8. Liquid storage tank; 9. Top plate; 10. Vertical rod; 11. Liquid storage cylinder; 12. Movable plate; 13. Circulation port; 14. Circulation hole; 15. Spiral hole; 16. Slot; 17. Third telescopic tube; 18. Heating chamber; 19. Heater; 20. U-shaped hole; 21. Liquid suction tube; 22. Liquid discharge tube; 23. First telescopic tube; 24. Second telescopic tube; 25. Bottom plate; 26. Elastic airbag; 27. Exhaust pipe; 28. Cross plate; 29. ​​Ventilation hole; 30. L-shaped rod; 31. Through hole; 32. Sliding block; 33. Round frame; 34. Stirring ring; 35. Spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7 A portable multifunctional drug delivery device comprises a fixed tube 1, a nozzle 2 is fixedly installed on the top of the fixed tube 1, a piston plate 3 is sealingly and slidably installed in the fixed tube 1, the piston plate 3 is in contact with the top wall of the inner cavity of the fixed tube 1, a connecting rod 4 is fixedly installed on the bottom of the piston plate 3, the other end of the connecting rod 4 passes through the fixed tube 1 and is fixedly connected to a push plate 5, and the connecting rod 4 is sealingly and slidably connected to the fixed tube 1,

[0038] Also includes:

[0039] The medicine storage mechanism includes a liquid storage box 8 fixedly installed on one side of the fixed tube 1, a liquid storage cylinder 11 is fixedly connected to the bottom wall of the inner cavity of the fixed tube 1, a movable plate 12 is sealingly and slidably installed on the inner wall of the liquid storage cylinder 11, a vertical rod 10 is fixedly connected to the top of the movable plate 12, the vertical rod 10 is fixedly connected to the bottom of the piston plate 3, a liquid suction tube 21 is fixedly installed on the side wall of the liquid storage cylinder 11, the other end of the liquid suction tube 21 passes through the fixed tube 1 and the liquid storage box 8, a liquid discharge pipe 22 is arranged above the liquid suction pipe 21, the other end of the liquid discharge pipe 22 passes through the fixed tube 1 and is connected to the top of the piston plate 3, a liquid discharge port 7 is opened on the top wall of the inner cavity of the fixed tube 1, the liquid discharge port 7 is connected to the nozzle 2, a heat exchange mechanism is arranged in the fixed tube 1, and the heat exchange mechanism and the medicine storage mechanism cooperate with each other.

[0040] By adopting the above technical solution, the user first pours liquid medicine into the liquid storage box 8 for storage, and then pulls the push plate 5 downward. The push plate 5 drives the piston plate 3 to move downward through the connecting rod 4. Since the piston plate 3 is sealed and slidably connected in the fixed tube 1, the downward movement of the piston plate 3 can realize the suction of the liquid medicine in the liquid storage cylinder 11 through the discharge pipe 22. When the piston plate 3 moves downward, it will drive the movable plate 12 to move downward through the vertical rod 10, so that the movable plate 12 can squeeze the liquid medicine in the liquid storage cylinder 11 through the discharge pipe 22 to the top of the piston plate 3. At this time, the spraying work can be carried out, the nozzle 2 is inserted into the user's nasal cavity, and then the push plate 5 is pushed upward, so that the push plate 5 can drive the piston plate 3 through the connecting rod 4 The upward movement can enable the piston plate 3 to push the liquid medicine on its top into the nozzle 2 through the discharge port 7 for spraying, so as to realize the spraying operation. When the piston plate 3 moves upward, the vertical rod 10 drives the movable plate 12 to move upward. The movable plate 12 is sealed and slidably installed in the inner cavity of the liquid storage cylinder 11, so that the movable plate 12 can move upward to suck the liquid medicine in the liquid storage tank 8 through the pipette 21. At this time, the liquid medicine in the liquid storage tank 8 can be drawn into the liquid storage cylinder 11, which plays the role of automatic medicine storage, and can realize quantitative storage of liquid medicine, so that the user can continue to use it or use it next time, which can effectively save time and avoid the situation that repeated operations are required for each use in the past, thereby effectively improving the use efficiency.

[0041] like Figure 3 and Figure 4 As shown, the heat exchange mechanism includes a top plate 9 fixedly connected to the inner wall of the fixed tube 1, a bottom plate 25 fixedly connected to the rod wall of the vertical rod 10, an elastic air bag 26 fixedly installed between the bottom plate 25 and the top plate 9, a circulation port 13 is opened in the piston plate 3, a first telescopic tube 23 is fixedly installed at the suction end of the elastic air bag 26, the other end of the first telescopic tube 23 passes through the top plate 9 and the piston plate 3 and is connected with the circulation port 13, a spiral hole 15 is opened in the side wall of the fixed tube 1, a second telescopic tube 24 is fixedly installed at the other end of the circulation port 13, the other end of the second telescopic tube 24 passes through the piston plate 3 and the fixed tube 1 and is fixedly connected to the top end of the spiral hole 15, and a circulation hole 14 is opened in the side wall of the liquid storage cylinder 11.

[0042] A U-shaped hole 20 is provided at the bottom of the fixed tube 1 and the liquid storage cylinder 11, and the two ends of the U-shaped hole 20 are fixedly connected to the bottom end of the spiral hole 15 and one end of the circulation hole 14 respectively. A groove 16 is provided at the bottom of the fixed tube 1, and a third telescopic tube 17 is installed in the groove 16. The top end of the third telescopic tube 17 passes through the fixed tube 1 and the liquid storage cylinder 11 and is fixedly connected to the other end of the circulation hole 14. A heating chamber 18 is provided in the push plate 5. The bottom end of the third telescopic tube 17 passes through the push plate 5 and is connected to the heating chamber 18. A heater 19 is fixedly installed on the bottom wall of the inner cavity of the heating chamber 18.

[0043] By adopting the above technical solution, the heater 19 is turned on when in use, and a battery for powering the heater 19 is installed in the push plate 5. The heater 19 can heat the gas in the heating chamber 18. The heating chamber 18 is connected to the outside, which is convenient for ventilating the gas in the heating chamber 18. When the push plate 5 is pulled downward, the push plate 5 will drive the third telescopic tube 17 to stretch. The slot 16 is set to facilitate the retraction of the contracted third telescopic tube 17 when the push plate 5 moves upward. In the initial state, the elastic airbag 26 is in a compressed state, and the push plate 5 moves upward. When the piston plate 3 moves downward, the connecting rod 4 drives the piston plate 3 to move downward. When the piston plate 3 moves downward, the first telescopic tube 23 and the second telescopic tube 24 will shrink synchronously. The piston plate 3 drives the bottom plate 25 to move downward through the vertical rod 10. Under the action of the elastic airbag 26, the elastic airbag 26 returns to its initial state and starts to expand through the suction end. At this time, the suction end of the elastic airbag 26 sucks air into the circulation port 13 through the first telescopic tube 23, and the circulation port 13 sucks air into the spiral hole 15 through the second telescopic tube 24. The hole 15 inhales air into the circulation hole 14 through the U-shaped hole 20, and the circulation hole 14 inhales air into the heating chamber 18 through the third telescopic tube 17, so that the heated gas in the heating chamber 18 can be inhaled, and the gas flows in the circulation hole 14, the spiral hole 15 and the circulation port 13 and finally enters the elastic airbag 26. When the gas enters the circulation hole 14, the liquid medicine in the liquid storage cylinder 11 is preheated, and when the gas enters the spiral hole 15, the liquid medicine flowing in the discharge pipe 22 is reheated, and when the gas enters the spiral hole 15, the liquid medicine discharged into the top of the piston plate 3 is reheated, which can effectively improve the heating effect of the liquid medicine, make the liquid medicine temperature change convenient for human body to adapt, and can effectively avoid the situation that the liquid medicine is usually cooler and causes temporary discomfort to the user, and avoid the liquid medicine irritating the nasal mucosa of the user, so that the user has sneezing, runny nose and coughing reactions, thereby effectively improving the user's absorption effect of the liquid medicine, and avoiding the situation that the user is uncomfortable and the medicine is wasted.

[0044] like Figures 3 to 6 As shown, an L-shaped rod 30 is sealingly and slidably mounted on the liquid storage box 8 , a through hole 31 is opened in the L-shaped rod 30 , and the bottom end of the through hole 31 is connected to the heating chamber 18 .

[0045] The bottom end of the L-shaped rod 30 is fixedly connected to the push plate 5, a stirring ring 34 is rotatably installed on the inner wall of the liquid storage tank 8, a circular frame 33 is fixedly connected to the inner wall of the stirring ring 34, a slider 32 is fixedly connected to the inner wall of the circular frame 33, and a spiral groove 6 adapted to the slider 32 is opened on the rod wall of the L-shaped rod 30.

[0046] By adopting the above technical solution, when the push plate 5 moves downward, it will drive the L-shaped rod 30 to move downward synchronously. The L-shaped rod 30 slides downward on the liquid storage tank 8, which makes the top of the through hole 31 communicate with the inner cavity of the liquid storage tank 8. When the user pushes the push plate 5 to move upward, the push plate 5 drives the piston plate 3 to move upward through the connecting rod 4, and the piston plate 3 drives the movable plate 12 to move upward through the vertical rod 10, so that the movable plate 12 can suck the liquid medicine in the liquid storage tank 8 through the suction tube 21, and the liquid medicine in the liquid storage tank 8 will be sucked. The tube 21 is sucked into the liquid storage cylinder 11. When the liquid medicine in the liquid storage tank 8 is sucked, the pressure in the liquid storage tank 8 will decrease. At the same time, the liquid storage tank 8 will be sucked through the through hole 31, so that the through hole 31 can suck the gas heated in the inner cavity of the heating chamber 18 into the inner cavity of the liquid storage tank 8, so that the inner cavity of the liquid storage tank 8 can be heated, thereby heating the liquid medicine in the liquid storage tank 8, which can effectively improve the preheating effect of the liquid medicine in the liquid storage tank 8 and avoid the situation in which the liquid medicine is relatively cold and causes discomfort to the user in the past.

[0047] When the push plate 5 drives the L-shaped rod 30 to move downward, through the setting of the spiral groove 6 and the slider 32, the L-shaped rod 30 can move downward and drive the slider 32 to rotate through the spiral groove 6, so that the circular frame 33 can drive the stirring ring 34 to rotate to stir the liquid medicine in the liquid storage tank 8. The push plate 5 drives the L-shaped rod 30 to move upward, which will cause the stirring ring 34 to rotate again to stir the liquid medicine in the liquid storage tank 8. At the same time, with the cooperation of inhaling heated gas through the through hole 31, the contact effect between the liquid medicine in the liquid storage tank 8 and the inhaled hot gas can be effectively improved, and the temperature in the liquid medicine can be evenly dispersed, thereby effectively improving the heating efficiency of the liquid medicine, and making the heated liquid medicine more convenient for users to use.

[0048] like Figure 3 and Figure 7 As shown, a cross plate 28 is rotatably mounted on one side of the bottom of the bottom plate 25 , an exhaust pipe 27 is fixedly mounted on the air outlet end of the elastic airbag 26 , and the bottom end of the exhaust pipe 27 penetrates the bottom plate 25 and extends to one side of the cross plate 28 .

[0049] By adopting the above technical solution, while the push plate 5 pushes the piston plate 3 to move upward through the connecting rod 4, the vertical rod 10 will drive the bottom plate 25 to move upward and squeeze the elastic airbag 26, and the air outlet end of the elastic airbag 26 will blow air through the exhaust pipe 27, and the gas blown out of the exhaust pipe 27 will directly act on the surface of the cross plate 28, so as to realize the rotation of the cross plate 28. The gas discharged from the exhaust pipe 27 can be evenly diffused in the inner cavity of the fixed tube 1 through the rotation of the cross plate 28. At the same time, the cross plate 28 will be driven by the bottom plate 25 to move upward during the rotation of the cross plate 28, so as to realize the improvement of the gas diffusion effect. When the elastic airbag 26 recovers the initial state, the heated gas in the heating chamber 18 is inhaled, so as to realize the increase of the pressure in the elastic airbag 26, and the exhaust speed of the elastic airbag 26 can be effectively improved and the exhaust time of the elastic airbag 26 can be extended, so as to effectively improve the fluidity of the gas in the fixed tube 1, and keep the temperature of the inner cavity of the fixed tube 1 as a whole, so as to effectively improve the heat preservation effect in the fixed tube 1, so as to effectively improve the overall use effect.

[0050] like Figure 3 As shown, ventilation holes 29 are opened in the connecting rod 4, and the ventilation holes 29 are connected to the inner cavities of the fixing tube 1 and the heating chamber 18.

[0051] By adopting the above technical solution, the piston plate 3 is sealed and slidably installed in the inner cavity of the fixed tube 1. When the push plate 5 drives the piston plate 3 to move downward through the connecting rod 4, the piston plate 3 will squeeze the gas in the inner cavity of the fixed tube 1 and discharge it into the inner cavity of the heating chamber 18 again through the ventilation hole 29. The heated gas can be effectively utilized, which plays a role in utilizing existing resources. The heating rate of the heater 19 on the gas in the inner cavity of the heating chamber 18 can be accelerated, thereby effectively reducing energy consumption and further effectively improving the overall heat exchange effect.

[0052] like Figure 3 As shown, a spring 35 is fixedly installed between the bottom of the piston plate 3 and the top of the top plate 9 , and the elastic force of the spring 35 is greater than the elastic force of the elastic airbag 26 .

[0053] By adopting the above technical solution, the push plate 5 will squeeze the spring 35 when driving the piston plate 3 to move downward through the connecting rod 4. When the user cancels the downward pulling force on the push plate 5, under the action of the spring 35, the spring 35 returns to its initial state and pushes the piston plate 3 to move upward, and the liquid medicine on the top of the piston plate 3 is discharged through the discharge port 7 and the nozzle 2, thereby achieving the purpose of automatic spraying, which can effectively save manpower and thus effectively improve the efficiency of spraying. The elastic force of the spring 35 is greater than the elastic force of the elastic airbag 26, so that when the spring 35 returns to its initial state and pushes the piston plate 3 to move upward, the vertical rod 10 will drive the bottom plate 25 to move upward and squeeze the elastic airbag 26, thereby realizing automatic exhaust of the elastic airbag 26.

[0054] like Figures 3 to 5 As shown, the inner cavities of the liquid discharge port 7, the liquid discharge pipe 22 and the liquid suction pipe 21 are all equipped with one-way valves.

[0055] The distance between the movable plate 12 and the bottom end of the drain pipe 22 is greater than the length of the spring 35 .

[0056] The distance between the top of the ventilation hole 29 and the bottom of the inner cavity of the fixing tube 1 is greater than the length of the spring 35 .

[0057] By adopting the above technical solution, one-way valves are installed in the inner cavities of the discharge port 7, the discharge pipe 22 and the suction pipe 21, so that the liquid medicine on the top of the piston plate 3 can only be discharged into the nozzle 2 through the discharge port 7 and cannot flow back, the liquid medicine in the liquid storage cylinder 11 can only be discharged into the top of the piston plate 3 through the discharge pipe 22 and cannot flow back, and the liquid medicine in the liquid storage tank 8 can only be discharged into the liquid storage cylinder 11 through the suction pipe 21 and cannot flow back, so as to achieve the purpose of one-way delivery of liquid medicine. The distance between 12 and the bottom end of the discharge pipe 22 and the distance between the top of the ventilation hole 29 and the bottom of the inner cavity of the fixed tube 1 are both greater than the length of the spring 35. When the push plate 5 drives the piston plate 3 to move downward through the connecting rod 4 to squeeze the spring 35, the spring 35 will limit the downward movement distance of the piston plate 3, which can facilitate the movable plate 12 to discharge the liquid medicine in the liquid storage cylinder 11 into the top of the piston plate 3 through the discharge pipe 22, and the gas in the inner cavity of the fixed tube 1 can be easily discharged into the inner cavity of the heating chamber 18 through the ventilation hole 29.

[0058] Instructions for use: First, the user pours liquid medicine into the liquid storage tank 8 for storage. When in use, turn on the heater 19 to heat the inner cavity of the heating chamber 18, then pull the push plate 5 to drive the piston plate 3 to move downward, and suck the liquid medicine in the liquid storage cylinder 11 to the top of the piston plate 3 through the discharge pipe 22. During this process, the elastic air bag 26 will absorb the heated gas in the heating chamber 18 to heat the liquid storage cylinder 11, the piston plate 3 and the fixed tube 1, which can improve the heating effect of the liquid medicine and facilitate human body adaptation. At the same time, the push plate 5 drives the L-shaped rod 30 to move downward, which will drive the stirring ring 34 to rotate through the cooperation of the spiral groove 6 and the slider 32, and stir the liquid medicine in the liquid storage tank 8, and the push plate 5 pushes the piston plate 3 upward During movement, the piston plate 3 can discharge the liquid medicine on its top into the user's nasal cavity through the nozzle 2. At this time, the movable plate 12 moves upward to suck the liquid medicine in the liquid storage tank 8 into the liquid storage cylinder 11 through the pipette 21. The pressure in the liquid storage tank 8 decreases and the hot air in the heating chamber 18 is sucked in through the through hole 31. At the same time, the upward movement of the L-shaped rod 30 drives the stirring ring 34 to rotate to stir the liquid medicine, which can effectively improve the heating effect of the liquid medicine and facilitate secondary use. At the same time, the upward movement of the piston plate 3 will cause the bottom plate 25 to squeeze the elastic airbag 26, and the elastic airbag 26 blows the cross plate 28 through the exhaust pipe 27 to rotate to realize the uniform dispersion of the gas in the fixed tube 1, which can improve the overall insulation effect of the fixed tube 1.

[0059] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable multifunctional drug delivery device, comprising a fixed tube (1), a nozzle (2) fixedly mounted on the top of the fixed tube (1), a piston plate (3) sealingly and slidably mounted inside the fixed tube (1), the piston plate (3) in contact with the top wall of the inner cavity of the fixed tube (1), a connecting rod (4) fixedly mounted on the bottom of the piston plate (3), the other end of the connecting rod (4) passing through the fixed tube (1) and fixedly connected to a push plate (5), the connecting rod (4) being sealingly and slidably connected to the fixed tube (1), Features: Also includes: The medicine storage mechanism comprises a liquid storage box (8) fixedly mounted on one side of the fixed tube (1); a liquid storage cylinder (11) is fixedly connected to the bottom wall of the inner cavity of the fixed tube (1); a movable plate (12) is sealingly and slidably mounted on the inner wall of the liquid storage cylinder (11); a vertical rod (10) is fixedly connected to the top of the movable plate (12); the vertical rod (10) is fixedly connected to the bottom of the piston plate (3); a liquid pipette (21) is fixedly mounted on the side wall of the liquid storage cylinder (11); the liquid pipette The other end of the liquid pipe (21) passes through the fixed pipe (1) and the liquid storage box (8); a liquid discharge pipe (22) is arranged above the liquid suction pipe (21); the other end of the liquid discharge pipe (22) passes through the fixed pipe (1) and is connected to the top of the piston plate (3); a liquid discharge port (7) is provided on the top wall of the inner cavity of the fixed pipe (1); the liquid discharge port (7) is connected to the inside of the nozzle (2); a heat exchange mechanism is arranged in the fixed pipe (1); the heat exchange mechanism cooperates with the medicine storage mechanism; The heat exchange mechanism comprises a top plate (9) fixedly connected to the inner wall of the fixed tube (1), a bottom plate (25) fixedly connected to the rod wall of the vertical rod (10), an elastic air bag (26) fixedly installed between the bottom plate (25) and the top plate (9), a circulation port (13) is provided in the piston plate (3), a first telescopic tube (23) is fixedly installed at the suction end of the elastic air bag (26), the other end of the first telescopic tube (23) passes through the top plate (9) and the piston plate (3) and is connected to the circulation port (13), a spiral hole (15) is provided in the side wall of the fixed tube (1), a second telescopic tube (24) is fixedly installed at the other end of the circulation port (13), the other end of the second telescopic tube (24) passes through the piston plate (3) and the fixed tube (1) and is fixedly connected to the top end of the spiral hole (15), and a circulation hole (14) is provided in the side wall of the liquid storage cylinder (11); A U-shaped hole (20) is provided in the bottom of the fixed tube (1) and the liquid storage cylinder (11), and the two ends of the U-shaped hole (20) are respectively fixedly connected to the bottom end of the spiral hole (15) and one end of the circulation hole (14). A groove (16) is provided at the bottom of the fixed tube (1), and a third telescopic tube (17) is installed in the groove (16). The top end of the third telescopic tube (17) passes through the fixed tube (1) and the liquid storage cylinder (11) and is fixedly connected to the other end of the circulation hole (14). A heating chamber (18) is provided in the push plate (5), and the bottom end of the third telescopic tube (17) passes through the push plate (5) and is connected to the heating chamber (18). A heater (19) is fixedly installed on the bottom wall of the inner chamber of the heating chamber (18).

2. A portable multifunctional drug delivery device according to claim 1, characterized in that: An L-shaped rod (30) is sealingly and slidably mounted on the liquid storage box (8), a through hole (31) is provided in the L-shaped rod (30), and the bottom end of the through hole (31) is connected to the heating chamber (18).

3. A portable multifunctional drug delivery device according to claim 2, characterized in that: The bottom end of the L-shaped rod (30) is fixedly connected to the push plate (5); a stirring ring (34) is rotatably mounted on the inner wall of the liquid storage tank (8); a circular frame (33) is fixedly connected to the inner wall of the stirring ring (34); a sliding block (32) is fixedly connected to the inner wall of the circular frame (33); and a spiral groove (6) adapted to the sliding block (32) is provided on the rod wall of the L-shaped rod (30).

4. A portable multifunctional drug delivery device according to claim 1, characterized in that: A cross plate (28) is rotatably mounted on one side of the bottom of the bottom plate (25), an exhaust pipe (27) is fixedly mounted on the air outlet end of the elastic airbag (26), and the bottom end of the exhaust pipe (27) passes through the bottom plate (25) and extends to one side of the cross plate (28).

5. A portable multifunctional drug delivery device according to claim 1, characterized in that: The connecting rod (4) is provided with ventilation holes (29), and the ventilation holes (29) are connected to the inner cavities of the fixing tube (1) and the heating chamber (18).

6. A portable multifunctional drug delivery device according to claim 5, characterized in that: A spring (35) is fixedly mounted between the bottom of the piston plate (3) and the top of the top plate (9), and the elastic force of the spring (35) is greater than the elastic force of the elastic airbag (26).

7. A portable multifunctional drug delivery device according to claim 6, characterized in that: The distance between the movable plate (12) and the bottom end of the liquid discharge pipe (22) is greater than the length of the spring (35), and the inner cavities of the liquid discharge port (7), the liquid discharge pipe (22) and the liquid suction pipe (21) are all installed with one-way valves.

8. A portable multifunctional drug delivery device according to claim 6, characterized in that: The distance between the top of the ventilation hole (29) and the bottom of the inner cavity of the fixing tube (1) is greater than the length of the spring (35).

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