Medicine spraying equipment for clinical nursing of patient

Abstract

The invention relates to the technical field of medicine spraying equipment, in particular to medicine spraying equipment for clinical nursing of a patient. The device comprises a medicine storage tank, a suction assembly is arranged in the medicine storage tank, the end, away from the medicine storage tank, of the suction assembly is connected with a driving assembly, and the driving assembly is connected with a spraying assembly and a liquid discharging assembly; when the piston is located in the hollow rod, negative pressure is generated on the side close to the main push rod, positive pressure is generated on the side away from the main push rod, increased air pressure is diffused into the medicine storage tank through the fixed suction pipe and the movable suction pipe, meanwhile, the stirring blades are driven by diffusion airflow and rotate at the layering position of the suspension type medicine, and therefore the medicine at the L-shaped outlet is mixed. The second branch pipe connected with the negative pressure side of the hollow rod is always in an open state, so that air pressure on the negative pressure side of the hollow rod is diffused to the suction nozzle, the suction nozzle continuously sucks saliva secreted by a patient due to invasion of foreign matters into the mouth, and the saliva flows into the collecting bottle along the direction of the suction nozzle, the second branch pipe, the third branch pipe and the collecting bottle.

Description

Technical Field

[0001] The present invention relates to the technical field of nursing spraying, in particular to a spraying device for clinical nursing of patients. Background Art

[0002] When treating esophagitis, oral mucosal damage and other diseases in patients with gastroenterology, sucralfate suspension is needed and sprayed to the ulcer injury site with the assistance of an endoscope. According to its instructions for use (such as 1 gram three times a day), the dosage of this type of drug must be strictly controlled. For suspension drugs, if they are not used for a period of time, the liquid and solid components will stand and separate. When they are used again, the ratio of the two components (referring to solid and liquid) deviates too much from the normal range, resulting in failure to achieve the optimal drug effect, thereby prolonging the patient's recovery course.

[0003] In the process of extracting medicine, the existing spraying equipment can muddy the layered medicine through the turbulence generated by the extraction structure. However, because the air pressure in the medicine storage tank does not change much (for example, when the medicine is extracted once through the needle tube structure, the volume of air squeezed into the medicine storage tube from the needle tube is limited), the mixing effect of the layered medicine is limited. In addition, when spraying suspended medicine on the throat or esophagus, the nozzle needs to be inserted deep into the throat. When the mouth is open and there is a foreign object in the mouth, the human mouth will secrete saliva quickly. If the patient swallows saliva during the spraying process, the saliva will dilute the concentration of the medicine when it flows through the affected area, thereby weakening the efficacy of the medicine.

[0004] In view of this, we propose a spraying device for clinical patient care to improve the deficiencies in the existing technology. Summary of the Invention

[0005] The present invention provides a drug spraying device for clinical patient care, which solves the problem that the mixing effect of layered drugs is limited due to the small change in air pressure in the drug storage tank. In addition, when spraying suspended drugs on the throat or esophagus, the nozzle needs to be inserted deep into the throat. When the mouth is open and there is a foreign object in the mouth, the human mouth will secrete saliva rapidly. If the patient swallows saliva during the spraying process, the saliva will dilute the drug concentration when it flows through the affected area, thereby weakening the drug efficacy, that is:

[0006] This is because the mixing effect of layered medicines is limited and saliva dilutes the medicines, resulting in reduced efficacy.

[0007] To achieve the above-mentioned purpose, the spraying device for clinical patient care includes a medicine storage tank, wherein a suction component is provided in the medicine storage tank, and a driving component is connected to the end of the suction component away from the medicine storage tank, and the driving component is respectively connected to a spraying component and a liquid discharge component;

[0008] The driving assembly includes a hollow rod and a piston slidably connected to the hollow rod, and the extraction end of the suction assembly is located at the layer of medicine in the medicine storage tank;

[0009] When the piston is pushed, it generates a positive pressure side and a negative pressure side in the hollow rod. The spray assembly is connected to the positive pressure side, and the drainage assembly is connected to the negative pressure side. The spray assembly closes when the pressure on the positive pressure side increases. The drainage assembly is used to absorb saliva from the patient's mouth. The positive pressure side of the hollow rod pressurizes the medicine in the medicine storage tank for the first time.

[0010] When the piston is reset in the hollow rod, the spray assembly opens when the pressure on the positive pressure side decreases. The pressure difference between the positive pressure side and the negative pressure side draws the medicine in the medicine storage tank into the positive pressure side. During the process of the suction assembly extracting the medicine, the suction assembly mixes the layered medicine again.

[0011] In the above technical solution, a sealing plate is integrated into the hollow rod, the piston is fixedly connected to a main push rod on the side close to the sealing plate, and the main push rod is fixedly connected to multiple sub-push rods on the side away from the piston. The outer wall of the piston is close to the inner wall of the hollow rod and is slidably connected to the hollow rod, and each of the sub-push rods is slidably connected to the sealing plate.

[0012] The ends of the multiple sub-push rods away from the main push rod are fixedly connected to a shift plate, and the two ends of the shift plate away from each other are located outside the hollow rod. A spring is arranged between the sealing plate and the shift plate on the periphery of each sub-push rod, and the spring is used to drive the piston to move in the hollow rod and then reset.

[0013] An L-shaped outlet is provided at one end of the movable straw immersed in the medicine. When a single blade of the stirring blade is perpendicular to the axis of the movable straw, the single blade of the stirring blade fits the inner wall of the movable straw.

[0014] A liquid-proof valve is provided at one end of the second branch pipe close to the hollow rod, and the connection between the second branch pipe and the hollow rod is always located at the side of the piston close to the main push rod.

[0015] In another technical solution, the medical staff first presses the nozzle under the patient's tongue, then holds the hollow rod with one hand and presses the dial. The dial pushes the piston to slide in the hollow rod through multiple sub-push rods and the main push rod. During this period, the spring stores elastic potential energy, and the piston generates negative pressure on the side close to the main push rod and positive pressure on the side away from the main push rod. Since the first branch pipe connected to the positive pressure side is closed by the switch valve, the increased air pressure cannot diffuse to the nozzle, so the increased air pressure will diffuse into the medicine storage tank through the fixed straw and the movable straw. At the same time, the stirring blade is driven by the diffused airflow and rotates at the stratification of the suspension-type medicine, thereby mixing the medicine at the L-shaped outlet. During this period, the torsion spring also stores elastic potential energy.

[0016] The second branch connected to the negative pressure side of the hollow rod is always in an open state (controlled by the liquid-proof valve, the air pressure in the hollow rod can diffuse to the suction nozzle, but no liquid exchange occurs between the hollow rod and the second branch). Therefore, the air pressure on the negative pressure side of the hollow rod diffuses to the suction nozzle, and the suction nozzle will continue to suck out the saliva secreted by the patient due to foreign objects invading the mouth, and the saliva will flow into the collection bottle along the "direction of the suction nozzle, the second branch, the third branch and the collection bottle".

[0017] Next, the medical staff inserts the nozzle into the patient's mouth with the other hand, observes the location near the lesion through the display screen, and then removes the pressing force on the dial plate. The spring and torsion spring both release elastic potential energy, and the spring drives the piston to reset in the hollow rod. The pressure on the positive pressure side of the hollow rod gradually decreases. At this time, the switch valve opens, and the air pressure in the hollow rod can diffuse to the nozzle. At the same time, the pressure difference on both sides of the piston draws the medicine in the medicine storage tank into the hollow rod, and then flows along the hollow rod into the first branch, and finally sprays from the nozzle to the area around the lesion. When the movable straw absorbs the medicine, the driving force of the medicine entering the movable straw and the deformation recovery force of the torsion spring drive the stirring blade to rotate, stirring the medicine near the L-shaped outlet again, so that the stratified medicine is quickly mixed.

[0018] Based on the above description, it can be seen that compared with the prior art, the beneficial effects of the present invention are:

[0019] When the piston is in the hollow rod, negative pressure is generated on the side close to the main push rod and positive pressure is generated on the side away from the main push rod. The increased air pressure diffuses into the medicine storage tank through the fixed suction pipe and the movable suction pipe. At the same time, the stirring blade is driven by the diffused airflow and rotates at the stratification of the suspension type medicine, thereby mixing the medicine at the L-shaped outlet.

[0020] The second branch tube connected to the negative pressure side of the hollow rod is always in an open state, so the air pressure on the negative pressure side of the hollow rod will spread to the suction nozzle, and the suction nozzle will continue to suck out the saliva secreted by the patient due to foreign objects invading the mouth, and the saliva will flow into the collection bottle along the "direction of the suction nozzle, the second branch tube, the third branch tube and the collection bottle".

[0021] Through the display screen, it is observed that the nozzle is positioned near the lesion, and the pressure on the positive pressure side of the hollow rod gradually decreases. At this time, the switch valve opens, and the air pressure in the hollow rod can diffuse to the nozzle. At the same time, the pressure difference on both sides of the piston draws the medicine in the medicine storage tank into the nozzle, and then sprays it around the lesion. When the movable straw absorbs the medicine, the stirring blade rotates to stir the medicine near the L-shaped outlet again, so that the stratified medicine is quickly mixed.

[0022] By repeatedly stirring the layered medicines as mentioned above, the uniformity of the medicines sprayed on the affected area is increased, and by sucking out the saliva secreted in the mouth, the concentration of the medicines at the lesion is prevented from being diluted by the saliva, thereby avoiding prolonging the recovery period due to the weakening of the concentration of the medicines sprayed on the lesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0025] Figure 2 It is one of the partially cutaway perspective views of the present invention;

[0026] Figure 3 This is the second partially cutaway perspective view of the present invention;

[0027] Figure 4 is a cutaway perspective view of a drive assembly of the present invention;

[0028] Figure 5 is a cutaway front view of the drive assembly of the present invention;

[0029] Figure 6 is a cutaway perspective view of the suction assembly of the present invention;

[0030] Figure 7 It is a cutaway left side view of the suction assembly of the present invention;

[0031] Figure 8 is a cutaway perspective view of the spray assembly of the present invention;

[0032] Figure 9 is a cutaway front view of the spray assembly of the present invention;

[0033] Figure 10 It is a cutaway perspective view of the drainage assembly of the present invention.

[0034] The meaning of each number in the figure is:

[0035] 100. Medicine storage tank; 110. Display screen;

[0036] 200, drive assembly; 210, hollow rod; 220, piston; 230, sealing plate; 240, shift plate; 241, main push rod; 242, sub-push rod; 243, spring;

[0037] 300, suction assembly; 310, fixed suction pipe; 320, movable suction pipe; 321, L-shaped outlet; 322, sealing chamber; 323, torsion spring; 330, stirring blade;

[0038] 400, spray assembly; 410, first branch pipe; 420, spray head; 430, switch valve;

[0039] 500, liquid discharge assembly; 510, second branch pipe; 511, liquid prevention valve; 520, suction nozzle; 530, third branch pipe; 531, collection bottle. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] The purpose of this embodiment is to provide a spraying device for clinical nursing of patients. Figure 1-Figure 3 , including a medicine storage tank 100, a suction assembly 300 is provided in the medicine storage tank 100, the suction assembly 300 is connected to the driving assembly 200 at one end away from the medicine storage tank 100, and the driving assembly 200 is respectively connected to the spraying assembly 400 and the drain assembly 500;

[0042] The driving assembly 200 includes a hollow rod 210 and a piston 220 slidably connected to the hollow rod 210. The extraction end of the suction assembly 300 is located at the layer of the medicine in the medicine storage tank 100.

[0043] When the piston 220 is pushed, the piston 220 generates a positive pressure side and a negative pressure side in the hollow rod 210. The spray assembly 400 is connected to the positive pressure side, and the drain assembly 500 is connected to the negative pressure side. The spray assembly 400 closes when the pressure on the positive pressure side increases. The drain assembly 500 is used to absorb saliva from the patient's mouth. The positive pressure side of the hollow rod 210 pressurizes and initially mixes the medicine in the medicine storage tank 100.

[0044] When the piston 220 is reset in the hollow rod 210, the spray assembly 400 opens when the pressure on the positive pressure side decreases. The pressure difference between the positive pressure side and the negative pressure side draws the medicine in the medicine storage tank 100 into the positive pressure side, and in the process of the suction assembly 300 extracting the medicine, the suction assembly 300 mixes the layered medicine again.

[0045] like Figure 4 and Figure 5 As shown, the medicine stored in the medicine storage tank 100 is a suspension-type liquid medicine that undergoes stratification after standing. A sealing plate 230 is integrally provided within the hollow rod 210. A main push rod 241 is fixedly connected to the side of the piston 220 near the sealing plate 230. The main push rod 241 is fixedly connected to a plurality of sub-push rods 242 on the side away from the piston 220. The outer wall of the piston 220 is closely attached to the inner wall of the hollow rod 210 and is slidably connected to the hollow rod 210. Each sub-push rod 242 is slidably connected to the sealing plate 230.

[0046] The improvement is that: one end of multiple sub-push rods 242 away from the main push rod 241 is fixedly connected to a shift plate 240, and the two ends of the shift plate 240 away from each other are located outside the hollow rod 210. A spring 243 is arranged between the sealing plate 230 and the shift plate 240 on the outer periphery of each sub-push rod 242. The spring 243 is used to drive the piston 220 to move in the hollow rod 210 and then reset.

[0047] It should be noted that the medical staff first presses the suction nozzle 520 under the patient's tongue, then holds the hollow rod 210 with one hand and presses the dial plate 240. The dial plate 240 pushes the piston 220 to slide in the hollow rod 210 through multiple sub-push rods 242 and the main push rod 241. During this period, the spring 243 stores elastic potential energy, and the piston 220 generates negative pressure on the side close to the main push rod 241 and positive pressure on the side away from the main push rod 241. Since the first branch pipe 410 connected to the positive pressure side is closed by the switch valve 430, the increased air pressure cannot spread to the nozzle 420, so the increased air pressure will spread to the medicine storage tank 100 through the fixed suction pipe 310 and the movable suction pipe 320.

[0048] Because the air pressure in the medicine storage tank 100 does not change much, the turbulence generated by a single suction has limited mixing effect on the layered medicines. That is, the medicine sucked into the hollow rod 210 is not mixed evenly, that is, the medicine does not reach the optimal efficacy ratio of the suspension.

[0049] Please refer to Figure 6 and Figure 7 As shown, the present application provides an aspiration component 300 that can mix liquids during pressurization and aspiration, which includes a fixed suction tube 310 connected to the hollow rod 210, and the end of the fixed suction tube 310 away from the hollow rod 210 is slidably connected to a movable suction tube 320, and the opening of the movable suction tube 320 is rotatably connected to a stirring blade 330.

[0050] Moreover, an L-shaped outlet 321 is provided at one end of the movable straw 320 immersed in the medicine. When a single blade of the stirring blade 330 is perpendicular to the axis of the movable straw 320, the single blade of the stirring blade 330 fits the inner wall of the movable straw 320. Sealed cavities 322 are provided on both sides of the movable straw 320 that are away from each other. The rotating shaft of the stirring blade 330 extends into the sealed cavity 322. A torsion spring 323 is provided between the rotating shaft of the stirring blade 330 and the inner wall of the sealed cavity 322. The inner ring of the torsion spring 323 is fixedly connected to the outer ring of the rotating shaft of the stirring blade 330, and the outer ring of the torsion spring 323 is fixedly connected to the inside of the sealed cavity 322.

[0051] That is to say, the stirring blade 330 is driven by the diffused airflow and rotates at the stratification point of the suspended medicine, thereby mixing the medicine at the L-shaped outlet 321. During this period, the torsion spring 323 also stores elastic potential energy. When the movable straw 320 absorbs the medicine, the driving force of the medicine entering the movable straw 320 and the deformation recovery force of the torsion spring 323 drive the stirring blade 330 to rotate, stirring the medicine near the L-shaped outlet 321 again, so that the stratified medicine is quickly mixed.

[0052] Next, through Figure 8 and Figure 9 The specific structure of the spray assembly 400 is disclosed. The spray assembly 400 includes a first branch pipe 410 connected to the hollow rod 210. The end of the first branch pipe 410 away from the hollow rod 210 is connected to a nozzle 420. The nozzle 420 is provided with a miniature camera for observing the affected area. The hollow rod 210 is provided with a display screen 110, and the display screen 110 is electrically connected to the miniature camera.

[0053] Furthermore, a switch valve 430 for switching the connection state between the nozzle 420 and the hollow rod 210 is provided in the first branch pipe 410 . The connection between the first branch pipe 410 and the hollow rod 210 is always located on the side of the piston 220 away from the main push rod 241 .

[0054] Next, the medical staff holds the nozzle 420 in the other hand and probes it into the patient's mouth. Through the display screen 110, the medical staff observes that it is located near the lesion, and then removes the pressing force on the dial plate 240. The spring 243 and the torsion spring 323 both release elastic potential energy. The spring 243 drives the piston 220 to reset in the hollow rod 210. The pressure on the positive pressure side of the hollow rod 210 gradually decreases. At this time, the switch valve 430 opens, and the air pressure in the hollow rod 210 can diffuse to the nozzle 420. At the same time, the pressure difference on both sides of the piston 220 draws the medicine in the medicine storage tank 100 into the hollow rod 210, and then flows into the first branch 410 along the hollow rod 210, and finally is sprayed from the nozzle 420 to the area around the lesion.

[0055] When spraying a suspension into the throat or esophagus, the nozzle 420 needs to be inserted deep into the throat. When the mouth is open and there is a foreign object in the mouth, the human mouth will rapidly secrete saliva. If the patient swallows saliva during the spraying process, the saliva flowing through the affected area will dilute the concentration of the medicine, thereby reducing the efficacy of the medicine.

[0056] So, if Figure 10 As shown, a drainage component 500 is provided for sucking saliva from the patient's mouth. The drainage component 500 includes a second branch tube 510 connected to the hollow rod 210. The end of the second branch tube 510 away from the hollow rod 210 is respectively connected to a suction nozzle 520 and a third branch tube 530. The end of the third branch tube 530 away from the second branch tube 510 is connected to a collection bottle 531.

[0057] Furthermore, a liquid-proof valve 511 is provided in the second branch pipe 510 at one end close to the hollow rod 210 , and the connection between the second branch pipe 510 and the hollow rod 210 is always located on the side of the piston 220 close to the main push rod 241 .

[0058] That is to say, the second branch tube 510 connected to the negative pressure side of the hollow rod 210 is always in an open state (controlled by the liquid-proof valve 511, the air pressure state in the hollow rod 210 can diffuse to the suction nozzle 520, but liquid exchange cannot occur between the hollow rod 210 and the second branch tube 510), so the air pressure on the negative pressure side of the hollow rod 210 diffuses to the suction nozzle 520, and the suction nozzle 520 will continue to suck out the saliva secreted by the patient due to foreign matter invading the mouth, and the saliva will flow into the collection bottle 531 along the "direction of the suction nozzle 520, the second branch tube 510, the third branch tube 530 and the collection bottle 531".

[0059] It should be noted that the hollow rod 210 and the fixed suction tube 310 , the first branch pipe 410 and the nozzle 420 , and the second branch pipe 510 and the suction nozzle 520 are all connected to each other through medical rubber hoses.

[0060] In summary, the working principle of the present invention is as follows:

[0061] The medical staff first presses the suction nozzle 520 under the patient's tongue, then holds the hollow rod 210 with one hand and presses the dial plate 240. The dial plate 240 pushes the piston 220 to slide in the hollow rod 210 through multiple sub-push rods 242 and the main push rod 241. During this period, the spring 243 stores elastic potential energy, and the piston 220 generates negative pressure on the side close to the main push rod 241 and positive pressure on the side away from the main push rod 241. Since the first branch pipe 410 connected to the positive pressure side is closed by the switch valve 430, the increased air pressure cannot diffuse to the nozzle 420, so the increased air pressure will diffuse into the medicine storage tank 100 through the fixed suction pipe 310 and the movable suction pipe 320. At the same time, the stirring blade 330 is driven by the diffused airflow and rotates at the stratification of the suspension type medicine, thereby mixing the medicine at the L-shaped outlet 321. During this period, the torsion spring 323 also stores elastic potential energy.

[0062] The second branch tube 510 connected to the negative pressure side of the hollow rod 210 is always in an open state (controlled by the liquid-proof valve 511, the air pressure state in the hollow rod 210 can diffuse to the suction nozzle 520, but no liquid exchange can occur between the hollow rod 210 and the second branch tube 510), so the air pressure on the negative pressure side of the hollow rod 210 diffuses to the suction nozzle 520, and the suction nozzle 520 will continue to suck out the saliva secreted by the patient due to foreign matter invading the mouth, and the saliva will flow into the collection bottle 531 along the "direction of the suction nozzle 520, the second branch tube 510, the third branch tube 530 and the collection bottle 531".

[0063] Next, the medical staff holds the nozzle 420 in the other hand and inserts it into the patient's mouth. Through the display screen 110, the medical staff observes that the nozzle is located near the lesion, and then removes the pressing force on the dial plate 240. The spring 243 and the torsion spring 323 both release elastic potential energy. The spring 243 drives the piston 220 to reset in the hollow rod 210. The pressure on the positive pressure side of the hollow rod 210 gradually decreases. At this time, the switch valve 430 opens, and the air pressure in the hollow rod 210 can diffuse to the nozzle 420. When the medicine is sucked up by the movable straw 320, the driving force of the medicine entering the movable straw 320 and the deformation recovery force of the torsion spring 323 drive the stirring blade 330 to rotate, stirring the medicine near the L-shaped outlet 321 again, so that the stratified medicine is quickly mixed.

[0064] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A drug spraying device for clinical patient care, comprising a drug storage tank (100), wherein a suction assembly (300) is provided in the drug storage tank (100), wherein the suction assembly (300) is connected to a drive assembly (200) at one end away from the drug storage tank (100), and wherein a spray assembly (400) and a drain assembly (500) are respectively connected to the drive assembly (200), characterized in that: The driving assembly (200) includes a hollow rod (210) and a piston (220) slidably connected to the hollow rod (210), and the extraction end of the suction assembly (300) is located at the layer of medicine in the medicine storage tank (100); When the piston (220) is pushed, the piston (220) generates a positive pressure side and a negative pressure side in the hollow rod (210), the spray assembly (400) is connected to the positive pressure side, and the drainage assembly (500) is connected to the negative pressure side. The spray assembly (400) is closed when the pressure on the positive pressure side increases, and the drainage assembly (500) is used to absorb saliva from the patient's mouth. The positive pressure side of the hollow rod (210) pressurizes the medicine in the medicine storage tank (100) for the first time. When the piston (220) is reset in the hollow rod (210), the spraying assembly (400) opens when the pressure on the positive pressure side decreases, and the pressure difference between the positive pressure side and the negative pressure side draws the medicine in the medicine storage tank (100) into the positive pressure side. In addition, during the process of the suction assembly (300) extracting the medicine, the suction assembly (300) remixes the layered medicine.

2. The spraying device for clinical patient care according to claim 1, characterized in that: The medicine stored in the medicine storage tank (100) is a suspension-type liquid medicine that undergoes stratification after standing still.

3. The spraying device for clinical patient care according to claim 1, characterized in that: A sealing plate (230) is integrally provided in the hollow rod (210); the piston (220) is fixedly connected to a main push rod (241) on a side close to the sealing plate (230); the main push rod (241) is fixedly connected to a plurality of sub-push rods (242) on a side away from the piston (220); the outer wall of the piston (220) is closely attached to the inner wall of the hollow rod (210) and is slidably connected to the hollow rod (210); and each of the sub-push rods (242) is slidably connected to the sealing plate (230).

4. The drug spraying device for clinical patient care according to claim 3, characterized in that: One end of the plurality of sub-push rods (242) away from the main push rod (241) is fixedly connected to a shift plate (240), and the two ends of the shift plate (240) away from each other are located outside the hollow rod (210). A spring (243) is arranged between the sealing plate (230) and the shift plate (240) on the periphery of each sub-push rod (242), and the spring (243) is used to drive the piston (220) to move in the hollow rod (210) and then reset.

5. The spraying device for clinical patient care according to claim 1, characterized in that: The suction assembly (300) includes a fixed suction pipe (310) connected to the hollow rod (210), and one end of the fixed suction pipe (310) away from the hollow rod (210) is slidably connected to a movable suction pipe (320), and the opening of the movable suction pipe (320) is rotatably connected to a stirring blade (330).

6. The drug spraying device for clinical patient care according to claim 5, characterized in that: An L-shaped outlet (321) is provided at one end of the movable straw (320) immersed in the medicine. When a single blade of the stirring blade (330) is perpendicular to the axis of the movable straw (320), the single blade of the stirring blade (330) fits against the inner wall of the movable straw (320). A sealed cavity (322) is provided on both sides of the movable straw (320) that are away from each other. The rotating shaft of the stirring blade (330) extends into the sealed cavity (322). A torsion spring (323) is provided between the rotating shaft of the stirring blade (330) and the inner wall of the sealed cavity (322). The inner ring of the torsion spring (323) is fixedly connected to the outer ring of the rotating shaft of the stirring blade (330), and the outer ring of the torsion spring (323) is fixedly connected to the inside of the sealed cavity (322).

7. The drug spraying device for clinical patient care according to claim 3, characterized in that: The spray assembly (400) includes a first branch pipe (410) connected to the hollow rod (210), an end of the first branch pipe (410) away from the hollow rod (210) is connected to a spray head (420), and a micro camera for observing the affected area is provided on the spray head (420), and a display screen (110) is provided on the hollow rod (210), and the display screen (110) is electrically connected to the micro camera.

8. The drug spraying device for clinical patient care according to claim 7, characterized in that: A switch valve (430) for switching the connection state between the nozzle (420) and the hollow rod (210) is provided in the first branch pipe (410), and the connection between the first branch pipe (410) and the hollow rod (210) is always located on the side of the piston (220) away from the main push rod (241).

9. The drug spraying device for clinical patient care according to claim 3, characterized in that: The liquid discharge assembly (500) comprises a second branch tube (510) connected to the hollow rod (210); an end of the second branch tube (510) away from the hollow rod (210) is respectively connected to a suction nozzle (520) and a third branch tube (530); an end of the third branch tube (530) away from the second branch tube (510) is connected to a collecting bottle (531).

10. The drug spraying device for clinical patient care according to claim 9, characterized in that: A liquid-proof valve (511) is provided in the second branch pipe (510) at one end close to the hollow rod (210), and the connection between the second branch pipe (510) and the hollow rod (210) is always located on the side of the piston (220) close to the main push rod (241).

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