Drug delivery device for internal medicine system treatment

Abstract

The present invention belongs to the field of medical device technology, and discloses a drug delivery device for internal medicine system treatment, including a syringe, wherein an arc block is fixedly installed at the bottom of the syringe, a circular plate is fixedly connected to the bottom of the arc block, a syringe is fixedly connected to the bottom of the circular plate, and a side plate is fixedly installed at the bottom of the left side of the syringe, and a movable rod is movably sleeved inside the side plate. The present invention provides gears, an arc plate, a through hole and a syringe, and when the operator needs to adjust the flow of the liquid medicine, he can rotate the clamping plate upward to release the fixing effect on the gear. At this time, by rotating the gear, the gear drives the rotating plate to rotate through the movable rod, thereby rotating the arc plate, and then the through hole and the syringe are coincident. Since the sizes of the five through holes are different, the flow rate can be adjusted by controlling the coincidence of different through holes with the syringe.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a drug delivery device for internal medicine system treatment. Background Art

[0002] Internal medicine is a medical field that focuses on diseases of various organs and systems within the human body. It covers multiple sub-disciplines such as respiratory, circulatory, digestive, urinary, hematological, neurological, and endocrine systems, and is dedicated to maintaining the internal health and balance of the human body through diagnosis, treatment, and prevention.

[0003] In the treatment practice of internal medicine system, drug delivery devices play a vital role. At present, the mainstream practice is to use a syringe to spray the drug solution directly into the lesion area in the patient's body. This method can undoubtedly achieve the basic purpose of drug delivery. However, in actual operation, the diameter of the injection tube of a traditional syringe is unchanged, which directly limits the adjustability of the drug flow rate, making flow control during the treatment process difficult to achieve, thereby affecting the flexibility and accuracy of the treatment method, making the existing drug delivery method have obvious limitations in adapting to different treatment needs, and therefore needs to be improved. Summary of the Invention

[0004] The object of the present invention is to provide a drug delivery device for internal medicine system treatment to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a drug delivery device for internal medicine system treatment, comprising a syringe, an arc block is fixedly installed on the bottom of the syringe, the bottom of the arc block is fixedly connected to a circular plate, the bottom of the circular plate is fixedly connected to an injection tube, the bottom of the left side of the syringe is fixedly installed with a side plate, the inner part of the side plate is movably sleeved with a movable rod, the outer surface of the movable rod is fixedly sleeved with a gear located above the side plate, the bottom of the left side of the syringe is fixedly installed with a horizontal plate, the left side of the bottom of the horizontal plate is hingedly provided with a clamping plate, the outer surface of the clamping plate is movably connected to the outer surface of the gear, the bottom of the outer surface of the movable rod is fixedly sleeved with a rotating plate, the right end of the rotating plate is fixedly connected with an arc plate, the top and bottom of the arc plate are movably connected to the bottom of the syringe and the top of the circular plate respectively, a through hole is opened in the interior of the arc plate, and baffles are fixedly installed on the upper and lower sides of the bottom of the arc plate.

[0006] Preferably, a piston rod is movably connected to the interior of the syringe, auxiliary plates are fixedly installed on the left and right sides of the top of the syringe, a transparent box is fixedly installed on the right side of the syringe, scale patterns are provided on the front and back of the transparent box, a circular hole is provided on the right side of the transparent box, a movable box is movably connected to the bottom of the inner cavity of the transparent box, a second spring is fixedly connected to the left side of the inner surface of the movable box, an insert block is fixedly connected to the right end of the second spring, the right end of the insert block passes through the movable box and extends to the inside of the circular hole and is movably connected to the inner surface of the circular hole.

[0007] Preferably, a vertical rod is fixedly installed on the top of the moving box, the top end of the vertical rod passes through the auxiliary plate and extends to the top of the auxiliary plate and is movably connected to the inner wall of the auxiliary plate, the top of the vertical rod is fixedly connected to the top plate, and a U-shaped plate is fixedly installed on the right side of the top of the outer surface of the piston rod, the inner surface of the U-shaped plate is movably connected to the outer surface of the vertical rod, and the right sides of the front and back of the U-shaped plate are provided with card slots.

[0008] Preferably, a round rod is fixedly installed on the right side of the syringe, and there are two round rods. The two round rods are respectively located on the front and back of the transparent box. A mounting block is movably sleeved on the outer surface of the round rod. There are two mounting blocks. A mounting plate is fixedly connected between the two mounting blocks. A round block is fixedly connected to the left side of the mounting plate. A first spring is fixedly connected to the left side of the mounting block. The left side of the first spring is fixedly connected to the outer surface of the syringe.

[0009] Preferably, limit blocks are movably installed inside the left and right sides of the front and back sides of the top plate, and movable blocks are fixedly connected between the limit blocks.

[0010] Preferably, a fixing rod is fixedly installed inside the moving block, a vertical plate is movably sleeved on the outer surface of the fixing rod, an inclined block is fixedly installed on the bottom inner side of the vertical plate, a return spring is fixedly connected to the outer side of the vertical plate, and the other end of the return spring is fixedly connected to the inner surface of the moving block.

[0011] Preferably, fixed blocks are fixedly installed on both sides of the top of the top plate, a double-threaded rod is movably sleeved inside the fixed block, the right end of the double-threaded rod is fixedly connected to a rotating block, and connecting blocks are threadedly sleeved on both sides of the outer surface of the double-threaded rod, and the bottom of the connecting block is fixedly connected to the top of the moving block.

[0012] Preferably, a pressing plate is fixedly mounted on the top of the piston rod, a bent plate is movably sleeved inside the pressing plate, and a connecting rod is fixedly mounted inside the bottom end of the bent plate.

[0013] Preferably, a push-pull rod is movably sleeved inside the top front end of the piston rod, a push plate is fixedly installed on the front of the push-pull rod, a vertical block is fixedly connected to the rear end of the push-pull rod, a bayonet is opened inside the vertical block, and the inner surface of the bayonet is movably connected to the outer surface of the connecting rod.

[0014] Preferably, a third spring is fixedly mounted on the back side of the vertical block, and the other end of the third spring is fixedly connected to the inner wall of the piston rod.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The present invention provides gears, curved plates, through holes and injection tubes. When the operator needs to adjust the flow rate of the liquid medicine, he can rotate the clamping plate upward to release the fixing effect of the gear. At this time, by rotating the gear, the gear drives the rotating plate to rotate through the movable rod, thereby rotating the curved plate, and then making the through hole coincide with the injection tube. Since the sizes of the five through holes are different, the purpose of adjusting the flow rate can be achieved by controlling different through holes to coincide with the injection tube.

[0017] 2. The present invention is provided with scale lines, round holes, movable boxes and vertical rods. When the operator administers medicine, he first pushes the mounting plate to the left so that the round block pushes the insert block to the left into the round hole. At this time, the operator can observe the value of the scale lines and move the movable box to the corresponding position by pulling the vertical rod. At this time, the second spring will push the insert block to reset and enter the inside of the round hole under the action of elastic recovery, thereby fixing the movable box and the vertical rod. At this time, the piston rod is pulled upward to inhale the medicine liquid through the injection tube. When the U-shaped plate contacts the bottom of the top plate, the medicine liquid inside the syringe is the specified amount, which is convenient for the operator to quantitatively absorb the medicine liquid.

[0018] 3. The present invention provides a card slot, a vertical plate, an inclined block and a return spring. When the piston rod rises, drives the U-shaped plate to rise and makes the U-shaped plate contact the bottom of the inclined block, the U-shaped plate will squeeze and push the inclined surface of the inclined block, so that the U-shaped plate can rise smoothly. At this time, the return spring will push the vertical plate and the inclined block to return to their original position under the action of elastic recovery, so that the inclined block is inserted into the inside of the card slot, thereby fixing the U-shaped plate and the piston rod, avoiding the operator accidentally touching the piston rod and causing the liquid medicine to be discharged.

[0019] 4. The present invention provides a bent plate, a connecting rod, a vertical block and a bayonet. When in use, the operator can insert his thumb into the inside of the bent plate. At this time, the operator lifts his thumb upward to drive the piston rod to move upward through the bent plate, which is convenient for the operator to absorb the liquid medicine. When the height of the bent plate needs to be adjusted, the push plate can be pushed inward to make the push-pull rod drive the vertical block to move inward, so that the connecting rod is disengaged from the inside of the bayonet, thereby releasing the fixation of the bent plate. At this time, the operator can adjust the height of the bent plate, which is convenient for operators with different hand shapes to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the bottom structure of the present invention when viewed from above;

[0022] Figure 3 Schematic diagram of the cross-sectional structure of the bottom of the present invention;

[0023] Figure 4 It is a schematic cross-sectional structural diagram of the front side of the present invention;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of the side of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the side surface of the present invention;

[0026] Figure 7 Schematic diagram of the structure of the top plate of the present invention;

[0027] Figure 8 Schematic diagram of the cross-sectional structure of the top plate of the present invention;

[0028] Figure 9 for Figure 1 Schematic diagram of the local enlarged structure at A in the middle;

[0029] Figure 10 for Figure 4 Schematic diagram of the local enlarged structure at B in the middle;

[0030] Figure 11 for Figure 5 Schematic diagram of the locally enlarged structure at point C in the middle.

[0031] Figure: 1, syringe; 2, curved block; 3, circular plate; 4, side plate; 5, movable rod; 6, gear; 7, horizontal plate; 8, clamping plate; 9, rotating plate; 10, curved plate; 11, through hole; 12, baffle; 13, mounting block; 14, mounting plate; 15, circular block; 16, first spring; 17, U-shaped plate; 18, clamping groove; 19, injection tube; 20, limit block; 21, moving block; 22, fixed rod; 23, vertical plate; 24, oblique block; 25, reset spring Spring; 26. Fixed block; 27. Double-threaded rod; 28. Rotating block; 29. ​​Connecting block; 30. Piston rod; 31. Auxiliary plate; 32. Transparent box; 33. Scale pattern; 34. Round hole; 35. Moving box; 36. Second spring; 37. Insert block; 38. Vertical rod; 39. Top plate; 40. Round rod; 41. Pressing plate; 42. Bending plate; 43. Connecting rod; 44. Push-pull rod; 45. Push plate; 46. Vertical block; 47. Bayonet; 48. Third spring. DETAILED DESCRIPTION

[0032] 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 creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 11 As shown, an embodiment of the present invention provides a drug delivery device for internal medicine system treatment, including a syringe 1, an arc block 2 is fixedly installed at the bottom of the syringe 1, a circular plate 3 is fixedly connected to the bottom of the circular plate 3, an injection tube 19 is fixedly connected to the bottom of the left side of the syringe 1, a side plate 4 is fixedly installed at the bottom, a movable rod 5 is movably sleeved inside the side plate 4, and a gear 6 located above the side plate 4 is fixedly sleeved on the outer surface of the movable rod 5, a horizontal plate 7 is fixedly installed at the bottom of the left side of the syringe 1, a clamping plate 8 is hinged to the left side of the bottom of the horizontal plate 7, the outer surface of the clamping plate 8 is movably connected to the outer surface of the gear 6, a rotating plate 9 is fixedly sleeved on the bottom of the outer surface of the movable rod 5, and the right end of the rotating plate 9 is fixedly connected to the arc plate 10, the top and bottom of the arc plate 10 are movably connected to the bottom of the syringe 1 and the top of the circular plate 3 respectively, a through hole 11 is opened inside the arc plate 10, and baffles 12 are fixedly installed on the upper and lower sides of the bottom of the arc plate 10.

[0034] There are five through holes 11, and the diameters of the five through holes 11 decrease from top to bottom, so that the through holes 11 of different diameters can adjust the flow rate when they coincide with the injection tube 19, thereby facilitating the operator to adjust the flow rate of the liquid spray according to actual conditions. When the card plate 8 is engaged with the gear 6, the gear 6 will be fixed, thereby fixing the movable rod 5 and the rotating plate 9, and then the position of the arc plate 10 can be fixed.

[0035] Among them, the piston rod 30 is movably connected to the inside of the syringe 1, and auxiliary plates 31 are fixedly installed on the left and right sides of the top of the syringe 1. A transparent box 32 is fixedly installed on the right side of the syringe 1. The front and back of the transparent box 32 are provided with scale patterns 33, and a circular hole 34 is provided on the right side of the transparent box 32. A movable box 35 is movably connected to the bottom of the inner cavity of the transparent box 32, and a second spring 36 is fixedly connected to the left side of the inner surface of the movable box 35. The right end of the second spring 36 is fixedly connected to the plug block 37. The right end of the plug block 37 passes through the movable box 35 and extends to the inside of the circular hole 34 and is movably connected to the inner surface of the circular hole 34.

[0036] When the operator is performing quantitative dosing, he can observe the value of the scale line 33 corresponding to the circular hole 34, and then move the movable box 35 to the corresponding position, so that the second spring 36 pushes the plug 37 into the inside of the circular hole 34 under the action of elastic recovery, thereby fixing the position of the movable box 35.

[0037] Among them, a vertical rod 38 is fixedly installed on the top of the moving box 35, the top of the vertical rod 38 passes through the auxiliary plate 31 and extends to the top of the auxiliary plate 31 and is movably connected to the inner wall of the auxiliary plate 31, the top of the vertical rod 38 is fixedly connected to the top plate 39, and a U-shaped plate 17 is fixedly installed on the right side of the top of the outer surface of the piston rod 30, the inner surface of the U-shaped plate 17 is movably connected to the outer surface of the vertical rod 38, and a card slot 18 is provided on the right side of the front and back of the U-shaped plate 17.

[0038] When the operator pulls the piston rod 30 upward to absorb the liquid medicine, the U-shaped plate 17 will be driven to rise. When the U-shaped plate 17 rises and contacts the top of the top plate 39, it will stop moving, thereby completing the quantitative absorption of the liquid medicine.

[0039] Among them, a round rod 40 is fixedly installed on the right side of the syringe 1. There are two round rods 40, and the two round rods 40 are respectively located on the front and back of the transparent box 32. The outer surface of the round rod 40 is movably connected with a mounting block 13. There are two mounting blocks 13. A mounting plate 14 is fixedly connected between the two mounting blocks 13. A round block 15 is fixedly connected to the left side of the mounting plate 14. A first spring 16 is fixedly connected to the left side of the mounting block 13. The left side of the first spring 16 is fixedly connected to the outer surface of the syringe 1.

[0040] The operator can press the mounting plate 14 to the left so that the round block 15 is inserted to the left into the circular hole 34, thereby pushing the insert block 37 to the left inside the circular hole 34, and then releasing the fixation of the movable box 35. When the operator presses the mounting plate 14 to the left, the first spring 16 will be compressed, so that the first spring 16 can drive the mounting plate 14 to reset under the action of elastic recovery.

[0041] Among them, the limiting blocks 20 are movably installed inside the left and right sides of the front and back sides of the top plate 39, and the moving blocks 21 are fixedly connected between the limiting blocks 20.

[0042] By providing the limiting block 20 , the limiting block 20 can limit the moving block 21 , thereby ensuring that the moving block 21 can move stably inside the top plate 39 .

[0043] Among them, a fixed rod 22 is fixedly installed inside the moving block 21, and a vertical plate 23 is movably sleeved on the outer surface of the fixed rod 22. An inclined block 24 is fixedly installed on the bottom inside the vertical plate 23, and a return spring 25 is fixedly connected to the outer side of the vertical plate 23. The other end of the return spring 25 is fixedly connected to the inner surface of the moving block 21.

[0044] When the piston rod 30 rises and drives the U-shaped plate 17 upward, the U-shaped plate 17 will contact the inclined surface of the inclined block 24, thereby pushing the two inclined blocks 24 to move away from each other. At this time, the return spring 25 will drive the vertical plate 23 and the inclined block 24 to return to their original position under the action of elastic recovery, so that the inclined block 24 is inserted into the interior of the card slot 18, thereby fixing the U-shaped plate 17 and the piston rod 30, and preventing the piston rod 30 from being accidentally touched and causing the liquid medicine to be discharged.

[0045] Among them, fixed blocks 26 are fixedly installed on the left and right sides of the top of the top plate 39, and a double-threaded rod 27 is movably sleeved inside the fixed block 26. The right end of the double-threaded rod 27 is fixedly connected to the rotating block 28, and the left and right sides of the outer surface of the double-threaded rod 27 are threadedly sleeved with connecting blocks 29. The bottom of the connecting block 29 is fixedly connected to the top of the moving block 21.

[0046] When administering medication, the operator can rotate the rotating block 28. Since the threads on the left and right sides of the outer surface of the double-threaded rod 27 are in opposite directions, the double-threaded rod 27 drives the two connecting blocks 29 to move in opposite directions, so that the inclined block 24 is disengaged from the inside of the slot 18, thereby keeping the U-shaped plate 17 in the released state.

[0047] A pressing plate 41 is fixedly mounted on the top of the piston rod 30 , a bent plate 42 is movably sleeved inside the pressing plate 41 , and a connecting rod 43 is fixedly mounted inside the bottom end of the bent plate 42 .

[0048] By providing the bent plate 42 , the operator can insert his thumb into the bent plate 42 , thereby pulling the piston rod 30 outward more conveniently.

[0049] Among them, a push-pull rod 44 is movably sleeved inside the top of the front side of the piston rod 30, a push plate 45 is fixedly installed on the front side of the push-pull rod 44, and a vertical block 46 is fixedly connected to the rear end of the push-pull rod 44. A bayonet 47 is provided inside the vertical block 46, and the inner surface of the bayonet 47 is movably connected to the outer surface of the connecting rod 43.

[0050] When the connecting rod 43 is located inside the bayonet 47 , it will fix the connecting rod 43 and thus fix the bent plate 42 .

[0051] A third spring 48 is fixedly mounted on the back of the vertical block 46 , and the other end of the third spring 48 is fixedly connected to the inner wall of the piston rod 30 .

[0052] When the operator pushes the push plate 45 inward, the third spring 48 will be compressed, so that the third spring 48 can push the vertical block 46 to return to its original position under the action of elastic recovery.

[0053] Working principle and usage process:

[0054] When the operator is in use, he first pushes the push plate 45 inward, so that the push-pull rod 44 drives the vertical block 46 to move inward, thereby disengaging the connecting rod 43 from the inside of the bayonet 47, thereby releasing the fixing effect on the bent plate 42. At this time, the operator can pull the bent plate 42 upward, so that the bent plate 42 drives the connecting rod 43 to rise, and by moving the connecting rod 43 to the bayonet 47 at different heights, the space inside the bent plate 42 can be adjusted so that operators with different hand sizes can use it. When the adjustment is completed, the push plate 45 can be released, and the third spring 48 will push the vertical block 46 to the left under the action of elastic recovery, so that the connecting rod 43 re-enters the inside of the bayonet 47, thereby fixing the bent plate 42. Then the operator inserts his thumb into the inside of the bent plate 42. At this time, the operator lifts his thumb upward to drive the piston rod 30 upward through the bent plate 42, which is convenient for the operator to absorb the medicine liquid.

[0055] When the operator is administering the medicine, he can push the mounting plate 14 to the left so that the round block 15 is inserted into the inside of the circular hole 34 and push the insert block 37 to move to the left, so that the insert block 37 enters the inside of the movable box 35, thereby releasing the fixing effect on the movable box 35. At this time, the operator pulls the vertical rod 38 upward by observing the value of the scale line 33, so that the vertical rod 38 drives the movable box 35 to move to the specified position. At this time, the operator releases the mounting plate 14, so that the second spring 36 can push the insert block 37 to return to its original position under the elastic recovery action and enter the inside of the circular hole 34, thereby fixing the movable box 35 again, so that the vertical rod 38 and the top plate 39 are fixed. Then the operator pulls the piston rod 30 upward so that the medicine liquid is sucked into the syringe 19. When the piston rod 30 rises, drives the U-shaped plate 17 to rise and makes the U-shaped plate 17 contact the bottom of the top plate 39, the U-shaped plate 17 will no longer rise. At this time, the medicine liquid inside the syringe 1 is the specified amount, thereby completing the quantitative absorption of the medicine liquid.

[0056] When the piston rod 30 rises and drives the U-shaped plate 17 to rise, the top of the U-shaped plate 17 will contact the inclined surface of the inclined block 24, thereby pushing the two inclined blocks 24 to move away from each other, so that the U-shaped plate 17 can rise smoothly. At this time, the return spring 25 will push the vertical plate 23 to return to its original position under the action of elastic recovery and make the inclined block 24 inserted into the inside of the slot 18, thereby fixing the U-shaped plate 17 and the piston rod 30, avoiding the operator from accidentally touching the piston rod 30 and causing the drug liquid to be discharged. When the operator administers the drug to the patient, he can first rotate the rotating block 28 to make the double-threaded rod 27 drive the two connecting blocks 29 to move away from each other, and then drive the two moving blocks 21 to move away from each other, so that the inclined block 24 is disengaged from the inside of the slot 18, so that the U-shaped plate 17 remains in the released state, and the operator can press the piston rod 30 to administer the drug.

[0057] When spraying the liquid medicine, the card plate 8 can be rotated upward to make the card plate 8 disengage from the gear 6, thereby releasing the fixing effect on the gear 6. At this time, the operator rotates the gear 6, so that the gear 6 drives the rotating plate 9 to rotate through the movable rod 5, thereby causing the arc plate 10 to rotate, and then the through holes 11 of different sizes can be controlled to coincide with the injection tube 19, thereby adjusting the flow rate of the liquid medicine.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A drug delivery device for internal medicine systemic treatment, comprising a syringe (1), characterized in that: The bottom of the syringe (1) is fixedly mounted with an arc block (2), the bottom of the arc block (2) is fixedly connected with a circular plate (3), the bottom of the circular plate (3) is fixedly connected with an injection tube (19), the bottom of the left side of the syringe (1) is fixedly mounted with a side plate (4), the inside of the side plate (4) is movably sleeved with a movable rod (5), the outer surface of the movable rod (5) is fixedly sleeved with a gear (6) located above the side plate (4), and the bottom of the left side of the syringe (1) is fixedly mounted with a circular plate (3), the bottom of the circular plate (3) is fixedly connected with an injection tube (19), and the bottom of the left side of the syringe (1) is fixedly mounted with a side plate (4), the inside of the side plate (4) is movably sleeved with a movable rod (5), and the outer surface of the movable rod (5) is fixedly sleeved with a gear (6) located above the side plate (4). A horizontal plate (7) is installed, and a card plate (8) is hinged on the left side of the bottom of the horizontal plate (7), and the outer surface of the card plate (8) is movably connected to the outer surface of the gear (6). The bottom of the outer surface of the movable rod (5) is fixedly sleeved with a rotating plate (9), and the right end of the rotating plate (9) is fixedly connected to an arc plate (10). The top and bottom of the arc plate (10) are movably connected to the bottom of the syringe (1) and the top of the circular plate (3) respectively. The inner opening of the arc plate (10) is A through hole (11) is provided, and baffles (12) are fixedly installed on the upper and lower sides of the bottom of the arc plate (10), the inner movably sleeve of the syringe (1) is connected to the piston rod (30), the top of the piston rod (30) is fixedly installed with a pressing plate (41), the inner movably sleeve of the pressing plate (41) is connected to a bent plate (42), the bottom of the bent plate (42) is fixedly installed with a connecting rod (43), the inner movably sleeve of the top of the front face of the piston rod (30) is connected to a push-pull Rod (44), a push plate (45) is fixedly installed on the front of the push-pull rod (44), a vertical block (46) is fixedly connected to the rear end of the push-pull rod (44), a bayonet (47) is opened inside the vertical block (46), the inner surface of the bayonet (47) is movably connected to the outer surface of the connecting rod (43), a third spring (48) is fixedly installed on the back of the vertical block (46), and the other end of the third spring (48) is fixedly connected to the inner wall of the piston rod (30).

2. The drug delivery device for internal medicine system treatment according to claim 1, characterized in that: Auxiliary plates (31) are fixedly installed on the left and right sides of the top of the syringe (1), a transparent box (32) is fixedly installed on the right side of the syringe (1), the front and back sides of the transparent box (32) are provided with scale lines (33), a circular hole (34) is provided on the right side of the transparent box (32), a movable box (35) is movably sleeved on the bottom of the inner cavity of the transparent box (32), a second spring (36) is fixedly connected to the left side of the inner surface of the movable box (35), the right end of the second spring (36) is fixedly connected to an insert (37), the right end of the insert (37) passes through the movable box (35) and extends to the inside of the circular hole (34) and is movably sleeved on the inner surface of the circular hole (34).

3. The drug delivery device for internal medicine system treatment according to claim 2, characterized in that: A vertical rod (38) is fixedly installed on the top of the moving box (35), the top end of the vertical rod (38) passes through the auxiliary plate (31) and extends to the top of the auxiliary plate (31) and is movably connected to the inner wall of the auxiliary plate (31), the top of the vertical rod (38) is fixedly connected to a top plate (39), a U-shaped plate (17) is fixedly installed on the right side of the top of the outer surface of the piston rod (30), the inner surface of the U-shaped plate (17) is movably connected to the outer surface of the vertical rod (38), and a card slot (18) is opened on the right side of the front and back of the U-shaped plate (17).

4. The drug delivery device for internal medicine system treatment according to claim 1, characterized in that: A round rod (40) is fixedly installed on the right side of the syringe (1), and there are two round rods (40). The two round rods (40) are respectively located on the front and back of the transparent box (32). The outer surface of the round rod (40) is movably sleeved with a mounting block (13). There are two mounting blocks (13). A mounting plate (14) is fixedly connected between the two mounting blocks (13). The left side of the mounting plate (14) is fixedly connected to a round block (15). The left side of the mounting block (13) is fixedly connected to a first spring (16). The left side of the first spring (16) is fixedly connected to the outer surface of the syringe (1).

5. The drug delivery device for internal medicine system treatment according to claim 3, characterized in that: Limiting blocks (20) are movably installed inside the front and left and right sides of the back of the top plate (39), and moving blocks (21) are fixedly connected between the limiting blocks (20).

6. The drug delivery device for internal medicine system treatment according to claim 5, characterized in that: A fixed rod (22) is fixedly installed inside the moving block (21), a vertical plate (23) is movably sleeved on the outer surface of the fixed rod (22), an inclined block (24) is fixedly installed on the bottom of the inner side of the vertical plate (23), a return spring (25) is fixedly connected to the outer side of the vertical plate (23), and the other end of the return spring (25) is fixedly connected to the inner surface of the moving block (21).

7. The drug delivery device for internal medicine system treatment according to claim 3, characterized in that: The left and right sides of the top of the top plate (39) are fixedly mounted with fixed blocks (26), the inside of the fixed block (26) is movably sleeved with a double-threaded rod (27), the right end of the double-threaded rod (27) is fixedly connected to a rotating block (28), the left and right sides of the outer surface of the double-threaded rod (27) are threadedly sleeved with connecting blocks (29), and the bottom of the connecting block (29) is fixedly connected to the top of the moving block (21).

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