Syringe clamping push-pull mechanism

Abstract

The utility model discloses a syringe clamping push-and-pull mechanism, which relates to the field of medical instruments, and adopts the technical scheme that the syringe clamping push-and-pull mechanism comprises a base, the base is provided with a pre-clamping component and a power clamping component corresponding to a needle cylinder of a syringe, the pre-clamping component provides elastic clamping for temporary fixation of the needle cylinder, and the power clamping component is used for clamping the needle cylinder. The power clamping assembly provides power for the needle cylinder to clamp and stably fix the needle cylinder. The base is provided with a push-pull assembly, the push-pull assembly comprises a guide part and a moving part which are matched with each other, the moving part is provided with the tail clamp assembly, the tail clamp assembly is arranged corresponding to a push rod tail plate of the injector, and the tail clamp assembly is used for being connected with the push rod tail plate of the injector. Through cooperation of the pre-clamping assembly and the power clamping assembly, an injector can be temporarily fixed and clamped at first, then the injector is forcefully locked through the power clamping assembly, and the injector can be better fixed and injected.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a syringe clamping push-pull mechanism. Background Technology

[0002] Cytotoxic drug preparation can cause toxicity to the reproductive, urinary, hepatic, and renal systems through skin contact or inhalation, and can also have teratogenic effects. Long-term exposure to cytotoxic waste can easily lead to occupational injuries for nursing staff. Therefore, the current trend is to use automated solution preparation equipment to assist or replace medical staff in preparing solutions.

[0003] Currently, common automated drug dispensing equipment, such as the fully functional intelligent robot for liquid drug preparation and its dispensing method disclosed in patent document CN102151228B, uses a syringe push-pull clamping mechanism as a crucial component, which is essential for the automated preparation of such drugs. Current related solutions, such as the syringe gripper disclosed in patent document CN217311165U, employ a lower clamping plate. This lower clamping plate uses integrated upper and lower clamping plates to fix the syringe side wings. However, this fixing method has significant drawbacks in automated dispensing processes because the fixing force remains constant, resulting in unstable clamping. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a syringe clamping push-pull mechanism. By using the cooperation of a pre-clamping component and a power clamping component, the syringe can be temporarily fixed and clamped first, and then the power clamping component can be used to further lock it in place, which can better fix the injection.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a syringe clamping push-pull mechanism, including a base,

[0006] The base is provided with a pre-clamping component and a power clamping component for the syringe barrel. The pre-clamping component provides elastic clamping for temporary fixation of the syringe barrel, and the power clamping component provides power clamping for stable fixation of the syringe barrel.

[0007] The base is provided with a push-pull assembly, which includes a guide part and a moving part that are adapted to each other. The moving part is provided with the tail clamp assembly, which is provided corresponding to the plunger tail plate of the syringe. The tail clamp assembly is used to connect the plunger tail plate of the syringe.

[0008] In use, the syringe barrel is first temporarily secured using a pre-clamping assembly. While the pre-clamping assembly provides a relatively weak clamping force, it allows for easy installation and removal, ensuring temporary fixation. Then, a power clamping assembly provides a stronger clamping force, ultimately fixing the syringe barrel in place. The syringe plunger is secured by a tail clamp assembly, and the plunger assembly then drives the plunger and piston to push and pull, thereby completing the extraction and injection of the medication.

[0009] Preferably, the pre-clamping assembly includes a clamping box, an active gripper, a driven gripper, and an elastic element;

[0010] The active gripper and the driven gripper are respectively inserted through the clamping box. The active gripper and the driven gripper are distributed opposite to each other. The tail ends of the active gripper and the driven gripper are respectively hinged to the clamping box. The tail ends of the active gripper and the driven gripper are respectively provided with intermeshing arc-shaped racks. The elastic element is provided between the active gripper and the base. The elastic element drives the front sections of the active gripper and the driven gripper to close together.

[0011] By setting intermeshing arc-shaped racks at the tail ends of the active and driven grippers, synchronous engagement and disengagement of the two can be achieved through an elastic element.

[0012] Preferably, a lever arm is provided at the tail end of the active gripper, and the elastic element is a tension spring, with both ends of the tension spring connected to the end of the lever arm and the base, respectively. The tension spring and lever arm effectively drive the opening and closing of the active and driven grippers.

[0013] Preferably, one pre-clamping component is provided on each of the two sides of the power clamping component, so as to provide a more stable temporary clamping of the syringe.

[0014] Preferably, the power clamping assembly includes a drive gear, a moving block, and a chuck;

[0015] The drive gear rotates relative to the base and is driven by a drive motor. Slide rails are provided on both sides of the drive gear, and the slide rails are slidably fitted with the moving blocks. The moving blocks are provided with linear racks that mesh with the drive gear. The moving blocks are fixed with the chucks, and the two chucks are arranged opposite each other.

[0016] The drive gear rotates, causing the racks on both sides to move synchronously. The racks on both sides move in opposite directions, causing the two clamps to move closer or further apart, so as to achieve the effect of clamping or releasing the syringe.

[0017] Preferably, the guide portion includes a screw and a first guide rod arranged side-by-side on the base. The screw is driven by a drive motor. The moving portion includes a movable seat and a base plate fixed to each other. The movable seat is threadedly adapted to the screw and slidably adapted to the first guide rod. The tail clamp assembly is disposed on the base plate. The drive motor drives the screw to rotate, which in turn drives the movable seat to move on the first guide rod, ultimately realizing the movement of the electric tail clamp assembly.

[0018] Preferably, the tail clamp assembly includes a clamping plate, a dual-head motor, a second guide rod, and a slider;

[0019] The two output ends of the dual-head motor are respectively set as threaded segments with opposite directions, and the sliders are respectively threadedly adapted to the threaded segments;

[0020] The second guide rod is arranged side by side with respect to the output end of the dual-head motor, and the slider is slidably engaged with the second guide rod;

[0021] The slider is respectively provided with clamps opposite to each other. The inner ends of the two clamps are provided with inner notches corresponding to the plunger of the syringe. The inner ends of the two clamps are provided with baffles on the moving part of the push-pull assembly. The tail plate of the syringe is located between the baffles and the clamps.

[0022] The push rod is inserted into the inner notch of the two clamping plates, and the tail plate is located between the clamping plates and the baffle. The two sliders can be moved closer or further apart by the threaded sections in opposite directions, positioning the push rod between the two clamping plates. Finally, the push rod is connected to the tail clamp assembly, and the movement of the tail clamp assembly drives the push rod to move together.

[0023] Preferably, the second guide rod is respectively provided on both sides of the dual-head motor. Since the clamping plate is located on one side of the dual-head motor, using two guide rods can significantly improve the stability of the clamping plate.

[0024] Preferably, the base is provided with end plates at both ends of the screw, and the two ends of the screw are rotatably engaged with the end plates via bearings. This makes it easier to install the screw.

[0025] Preferably, both ends of the second guide rod are fixed to the end plate. This allows for better guide rod positioning.

[0026] The beneficial effects of this utility model are:

[0027] This solution utilizes the combination of a pre-clamping component and a power clamping component to temporarily fix and clamp the syringe first, and then further tighten it with the power clamping component to better secure the syringe. At the same time, the combination of the tail clamping component and the push-pull component can effectively drive the push rod and piston to push and pull, thereby realizing the ejection and withdrawal of the drug. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only four of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the pre-clamping component according to an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the power clamping assembly according to an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the tail clip assembly according to an embodiment of the present utility model;

[0033] The components are as follows: 1. Base; 2. Push-pull assembly; 3. Guide part; 4. Moving part; 5. Pre-clamping assembly; 6. Clamping box; 7. Active gripper; 8. Driven gripper; 9. Elastic element; 10. Arc rack; 11. Lever arm; 12. Power clamping assembly; 13. Drive gear; 14. Moving block; 15. Chuck; 16. Linear rack; 17. Screw; 18. First guide rod; 19. Moving seat; 20. Base plate; 21. Tail clamp assembly; 22. Clamping plate; 23. Dual-head motor; 24. Second guide rod; 25. Slider; 26. Inner notch; 27. Baffle; 28. End plate. Detailed Implementation

[0034] To enhance understanding of this utility model, it will be described in further detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain this utility model and do not limit the scope of protection of this utility model.

[0035] Example

[0036] like Figure 1 As shown, a syringe clamping push-pull mechanism includes a base 1. The base 1 is provided with a pre-clamping component 5 and a power clamping component 12 corresponding to the syringe barrel. The pre-clamping component 5 provides elastic clamping for temporary fixation of the syringe barrel, and the power clamping component 12 provides power clamping for stable fixation of the syringe barrel. The base 1 is provided with a push-pull component 2, which includes a guide part 3 and a moving part 4 that are adapted to each other. The moving part 4 is provided with a tail clamp component 21, which is provided corresponding to the plunger tail plate of the syringe and is used to connect the plunger tail plate of the syringe.

[0037] In use, the syringe barrel is first temporarily fixed using the pre-clamping component 5. Although the pre-clamping component 5 uses elastic clamping, the fixing force is relatively weak, allowing for easy installation and removal, thus providing temporary fixation. Then, the power clamping component 12 provides a stronger clamping force, finally positioning and fixing the syringe barrel. The syringe plunger is fixed by the tail clamping component 21, and then the plunger assembly drives the syringe plunger and piston to push and pull, thereby completing the extraction and injection of the drug solution.

[0038] Combination Figure 2 As shown, the pre-clamping assembly 5 includes a clamping box 6, an active gripper 7, a driven gripper 8, and an elastic element 9. The active gripper 7 and the driven gripper 8 are respectively inserted through the clamping box 6. The active gripper 7 and the driven gripper 8 are distributed opposite to each other. The tail ends of the active gripper 7 and the driven gripper 8 are respectively hinged to the clamping box 6. The tail ends of the active gripper 7 and the driven gripper 8 are respectively provided with intermeshing arc-shaped straight toothed racks 16. The elastic element 9 is provided between the active gripper 7 and the base 1. The elastic element 9 drives the front sections of the active gripper 7 and the driven gripper 8 to close together.

[0039] By setting intermeshing arc-shaped linear racks 16 at the tail ends of the active gripper 7 and the driven gripper 8, the synchronous engagement and opening of the two can be achieved by an elastic element 9.

[0040] The tail end of the active gripper 7 is provided with a lever arm 11, and the elastic element 9 is a tension spring. The two ends of the tension spring are respectively connected to the end of the lever arm 11 and the base 1. Through the tension spring and the lever arm 11, the active gripper 7 and the driven gripper 8 can be effectively driven to open and close.

[0041] The pre-clamping component 5 is provided on each of the two sides of the power clamping component 12, so as to provide a more stable temporary clamping of the syringe.

[0042] Combination Figure 3 As shown, the power clamping assembly 12 includes a drive gear 13, a moving block 14, and a chuck 15;

[0043] The drive gear 13 is rotatably engaged with the base 1. The drive gear 13 is driven by a drive motor. Slide rails are provided on both sides of the drive gear 13. The slide rails are slidably engaged with the moving block 14. The moving block 14 is provided with a linear rack 16 that meshes with the drive gear 13. The moving block 14 is fixed with the chuck 15. The two chucks 15 are arranged opposite each other.

[0044] The drive gear 13 rotates, causing the linear racks 16 on both sides to move synchronously. The linear racks 16 on both sides move in opposite directions, causing the two clamps 15 to move closer or further apart, so as to achieve the effect of clamping or releasing the syringe.

[0045] The guide part 3 includes a screw 17 and a first guide rod 18 arranged side by side on the base 1. The screw 17 is driven by a drive motor. The moving part 4 includes a movable seat 19 and a base plate 20 fixed to each other. The movable seat 19 is threadedly adapted to the screw 17 and slidably adapted to the first guide rod 18. The tail clamp assembly 21 is disposed on the base plate 20. The drive motor drives the screw 17 to rotate, which in turn drives the movable seat 19 to move on the first guide rod 18, ultimately realizing the movement of the electric tail clamp assembly 21.

[0046] Combination Figure 4 As shown, the tail clamp assembly 21 includes a clamping plate 22, a dual-head motor 23, a second guide rod 24, and a slider 25;

[0047] The two output ends of the dual-head motor 23 are respectively configured as threaded segments with opposite directions, and the slider 25 is threadedly adapted to the threaded segments respectively;

[0048] The second guide rod 24 is arranged side by side with the output end of the dual-head motor 23, and the slider 25 is slidably engaged with the second guide rod 24;

[0049] The slider 25 is respectively provided with the clamping plate 22. The inner ends of the two clamping plates 22 are provided with inner notches 26 corresponding to the plunger of the syringe. The inner ends of the two clamping plates 22 are provided with baffles 27 in the moving part 4 of the push-pull assembly 2. The tail plate of the syringe is located between the baffles 27 and the clamping plates 22.

[0050] The push rod is inserted through the inner notch 26 of the two clamping plates. The tail plate is located between the clamping plate 22 and the baffle 27. The two sliders 25 can move closer or further away through the threaded sections in opposite directions, positioning the push rod between the two clamping plates 22. Finally, the push rod is connected to the tail clamp assembly 21. The movement of the tail clamp assembly 21 drives the push rod to move together.

[0051] The second guide rod 24 is respectively provided on both sides of the dual-head motor 23. Since the clamping plate 22 is located on one side of the dual-head motor 23, the use of two guide rods can significantly improve the stability of the clamping plate 22.

[0052] The base 1 is provided with end plates 28 at both ends corresponding to the screw 17, and the two ends of the screw 17 are rotatably engaged with the end plates 28 through bearings. This makes it easier to install the screw 17.

[0053] The two ends of the second guide rod 24 are respectively fixed to the end plate 28. This allows for better guide rod positioning.

[0054] The beneficial effects of this utility model are:

[0055] This solution utilizes the cooperation of the pre-clamping component 5 and the power clamping component 12 to first temporarily fix and clamp the syringe, and then further tighten it with the power clamping component 12 to better fix the syringe. At the same time, the cooperation of the tail clamping component 21 and the push-pull component 2 can effectively drive the push rod and piston to push and pull, thereby realizing the pushing and pulling of the drug.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A syringe clamping push-pull mechanism characterized by, The base (1) is provided with a pre-clamping assembly (5) and a power clamping assembly (12) corresponding to the syringe barrel, the pre-clamping assembly (5) provides elastic clamping temporary fixation for the syringe barrel, and the power clamping assembly (12) provides power clamping stable fixation for the syringe barrel. The base (1) is provided with a push-pull assembly (2), the push-pull assembly (2) comprises a guide part (3) and a moving part (4) matched with each other, the moving part (4) is provided with a tail clamp assembly (21) corresponding to the push rod tail plate of the syringe, and the tail clamp assembly (21) is used for connecting the push rod tail plate of the syringe. The pre-clamping assembly (5) comprises a clamping box (6), a driving jaw (7), a driven jaw (8) and an elastic member (9). The driving jaw (7) and the driven jaw (8) are respectively provided in the clamping box (6), the driving jaw (7) and the driven jaw (8) are oppositely distributed, tail ends of the driving jaw (7) and the driven jaw (8) are respectively hinged to the clamping box (6), and the tail ends of the driving jaw (7) and the driven jaw (8) are respectively provided with arc-shaped racks (10) meshing with each other, the elastic member (9) is arranged between the driving jaw (7) and the base (1), and the elastic member (9) drives the front sections of the driving jaw (7) and the driven jaw (8) to be folded towards each other. The tail end of the driving jaw (7) is provided with a force arm (11), the elastic member (9) is a tension spring, and two ends of the tension spring are respectively connected to the end of the force arm (11) and the base (1).

2. A syringe clamp push-pull mechanism according to claim 1, wherein: The pre-clamping assembly (5) is arranged on both sides of the power clamping assembly (12).

3. A syringe holding push-pull mechanism according to claim 1, wherein: The power clamping assembly (12) comprises a driving gear (13), a moving block (14) and a chuck (15).

4. The syringe clamp push-pull mechanism of claim 1, wherein: The driving gear (13) is rotationally matched with the base (1), the driving gear (13) is driven by a driving motor, both sides of the driving gear (13) are respectively provided with slide rails, the slide rails are respectively slidably matched with the moving blocks (14), the moving blocks (14) are provided with straight racks (16) meshing with the driving gear (13), the moving blocks (14) are respectively fixed with the chucks (15), and the two chucks (15) are oppositely arranged. The guide part (3) comprises a screw rod (17) and a first guide rod (18) arranged side by side on the base (1), the screw rod (17) is driven by a driving motor, the moving part (4) comprises a moving seat (19) and a bottom plate (20) fixed with each other, the moving seat (19) is threadedly matched with the screw rod (17), the moving seat (19) is slidably matched with the first guide rod (18), and the tail clamp assembly (21) is arranged on the bottom plate (20).

5. A syringe clamp push-pull mechanism according to claim 4, wherein: The tail clamp assembly (21) comprises a clamping plate (22), a double-head motor (23), a second guide rod (24) and a sliding block (25).

6. A syringe clamp push-pull mechanism according to claim 5, wherein: Two output ends of the double-head motor (23) are respectively provided as thread segments in opposite directions, and the sliding block (25) is threadedly matched with the thread segments. ​ The second guide rod (24) is arranged in parallel relative to the output end of the double-head motor (23), and the sliding block (25) is slidingly fitted in the second guide rod (24); The sliding block (25) is respectively arranged relative to the clamping plate (22), the inner ends of the two clamping plates (22) are provided with inner notches (26) corresponding to the push rod of the syringe, the inner ends of the two clamping plates (22) are provided with a baffle (27) on the moving part (4) of the push-pull assembly (2), and the tail plate of the syringe is located between the baffle (27) and the clamping plate (22).

7. A syringe clamp push-pull mechanism according to claim 6, wherein: The second guide rod (24) is arranged on both sides of the double-head motor (23) respectively.

8. A syringe clamp push-pull mechanism according to claim 7, wherein: The base (1) is provided with an end plate (28) corresponding to the two ends of the screw rod (17), and the two ends of the screw rod (17) are respectively rotationally fitted with the end plate (28) through bearings.

9. A syringe clamp push-pull mechanism according to claim 8, wherein: The two ends of the second guide rod (24) are fixed with the end plate (28) respectively.

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