Automatic push type injector

Abstract

The utility model discloses an automatic push type injector which comprises a bottom plate, a first sliding groove is formed in the center of the top of the bottom plate, a pressing plate is installed above a needle cylinder, a piston is connected to the inner wall of the needle cylinder in a sliding mode, a second sliding groove is formed in the center of the bottom of a first embedded plate, and the inner space of a square through hole is communicated with the inner space of the second sliding groove. After the forward and reverse rotation motor is started, the forward and reverse rotation motor can drive the threaded rod to rapidly rotate together, at the moment, the threaded sleeve can move back and forth on the outer wall of the rotating threaded rod, meanwhile, the push pipe can also move back and forth along with the threaded rod, and when the push pipe moves towards the needle head, the push rod can drive the piston to move towards the needle head. When the sliding plate on the outer wall of the push tube touches the contact block, the control module immediately closes the forward and reverse rotation motor, the push tube and the push rod do not move any more, damage to the injector and the push device is avoided, and meanwhile noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an automatic propulsion type syringe. Background Art

[0002] A syringe is a common medical device. It is mainly composed of a needle, a syringe and a piston. By pushing the piston, the medicine or liquid can be drawn into or injected into the human body. Syringes are widely used in the medical field and can be used for various purposes such as injecting medicine, drawing blood, and delivering nutrient solution.

[0003] Common syringe injections mostly rely on a uniform speed or experience to adjust the drug infusion speed during the entire operation, which has great risks and tests the knowledge and experience of the injection personnel. Improper control can cause great harm. Based on these problems, Chinese patent CN219721543U discloses an automatic propelling syringe, which is provided with a propulsion mechanism, which can automatically push the syringe body for injection, so as to achieve the purpose of controlling the fentanyl infusion speed, making the automatic propelling syringe more flexible and intelligent, making the fentanyl infusion safer, and providing a variety of implementation methods, so that the automatic propelling syringe is more practical and more economical. The automatic propelling syringe can control the fentanyl infusion speed by controlling the speed of the motor, and the fentanyl infusion speed is controlled by the telescopic speed of the telescopic rod, so that the infusion of fentanyl is more stable.

[0004] When the push-type syringe is in use, the syringe body needs to be fixed on the base, and the core rod also needs to be fixed. The entire installation process not only wastes the medical staff's time, but also hinders the patient's treatment progress. Since the motor and the telescopic rod are not equipped with a timing switch, the motor and the telescopic rod need to be turned off in time by the medical staff. If the medical staff forgets to turn off the motor or the telescopic rod, the first limit block, the second limit block and the telescopic rod will continue to push toward the syringe body, which will not only cause damage to the syringe body or the pushing device, but also generate huge noise. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] The cam is provided with a plurality of holes, each of which is provided with a plurality of holes, and the plurality of holes are provided with a plurality of holes. The plurality of holes are provided with a plurality of holes. The plurality of holes are provided with a plurality of holes. The plurality of holes are provided with a plurality of holes. The plurality of holes are provided with a plurality of holes.

[0008] As a further description of the above technical solution:

[0009] A needle is fixedly connected to one end of the inner wall of the syringe, a bottom cover is threadedly connected to the other end of the inner wall of the syringe, and a first air hole is opened at one end of the bottom cover.

[0010] As a further description of the above technical solution:

[0011] A slip ring is passed through the center of the bottom cover, the inner wall of the slip ring is slidably connected with the outer wall of the push rod, and a forward and reverse motor is installed at the bottom end of the support plate.

[0012] As a further description of the above technical solution:

[0013] The movable end of the forward and reverse motor is rotatably connected with a threaded rod, the outer wall of the threaded rod is threadedly connected with a threaded sleeve, and the outer wall of the threaded sleeve is fixedly connected with the inner wall of the push tube.

[0014] As a further description of the above technical solution:

[0015] A spring data line is fixedly connected at the center of the top of the control module, and the bottom end of the spring data line is fixedly connected to the bottom end of the forward and reverse motor. A second embedded plate is vertically penetrated at the other end of the top of the top plate.

[0016] As a further description of the above technical solution:

[0017] Both ends of the second embedded plate are vertically penetrated by spring cylinders, and the inner walls of the spring cylinders are slidably connected with sliding rods.

[0018] As a further description of the above technical solution:

[0019] The top end of the outer wall of the slide rod is sleeved with a return spring, the top and bottom ends of the spring tube are provided with second air holes, and the bottom of the slide rod is fixedly connected with a pressure plate.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) After the forward and reverse motors are turned on, they can rotate rapidly with the threaded rod. At this time, the threaded sleeve can move back and forth on the outer wall of the rotating threaded rod, and the push tube will also move back and forth. When the push tube moves toward the needle, the push rod will move the piston toward the needle. At this time, the liquid medicine in the syringe will be squeezed out. When the slide plate on the outer wall of the push tube touches the contact block, the control module will immediately turn off the forward and reverse motors. At this time, the push tube and the push rod will no longer move, which not only avoids damage to the syringe and the pushing device, but also reduces the generation of noise.

[0022] (2) When the slide bar moves downward, the pressure plate will press on the top of the syringe, thereby fixing the syringe placed in the first slide slot, which not only saves the time of medical staff, but also speeds up the treatment progress of the patient. By setting the spring data line, the control module can remotely control the forward and reverse motors, and inserting the hollow plug into the square perforations at different positions can change the moving range of the push tube and the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0024] Figure 2 This is the second structural diagram of the utility model;

[0025] Figure 3 It is a front view of the utility model;

[0026] Figure 4 It is a front cross-sectional view of the utility model;

[0027] Figure 5 For this utility model Figure 4 A partial enlarged view of the middle A area;

[0028] Figure 6 For this utility model Figure 4 A partial enlarged view of the middle B area;

[0029] Figure 7 For this utility model Figure 4 A partial enlarged view of area C in the middle.

[0030] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0031] 1. Bottom plate; 2. First slide groove; 3. Syringe; 4. Needle; 5. Bottom cover; 6. First air hole; 7. Slip ring; 8. Push rod; 9. Piston; 10. Support plate; 11. Forward and reverse motor; 12. Threaded rod; 13. Threaded sleeve; 14. Push tube; 15. Top plate; 16. First embedded plate; 17. Square perforation; 18. Second slide groove; 19. Hollow plug; 20. Control module; 21. Data line tube; 22. Contact block; 23. Spring data line; 24. Second embedded plate; 25. Spring tube; 26. Slide rod; 27. Reset spring; 28. Second air hole; 29. ​​Press plate; 30. Slide plate. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0035] Reference Figure 1-7 The utility model provides an embodiment: an automatic propelling syringe, comprising a bottom plate 1, a first slide groove 2 is provided at the center of the top of the bottom plate 1, a syringe 3 is slidably connected to one end of the inner wall of the first slide groove 2, the first slide groove 2 is provided to mainly place the syringe 3, a needle 4 is fixedly connected to one end of the inner wall of the syringe 3, a bottom cover 5 is threadedly connected to the other end of the inner wall of the syringe 3, a first air hole 6 is provided at one end of the bottom cover 5, a slip ring 7 is passed through the center of the bottom cover 5, a push rod 8 is slidably connected to the inner wall of the slip ring 7, and the top of the push rod 8 A piston 9 is fixedly connected, and the outer wall of the piston 9 is slidably connected to the inner wall of the syringe 3. By setting a simple connection method between the bottom cover 5 and the syringe 3, the disassembly and assembly steps of the bottom cover 5 and the piston 9 are more convenient and quick, and it is also convenient to clean the inside of the syringe 3. When the piston 9 slides toward the needle 4, the external gas will enter the syringe 3 along the first air hole 6. When the piston 9 slowly moves away from the needle 4, the gas in the syringe 3 will be discharged from the first air hole 6, thereby balancing the internal and external air pressures of the syringe 3.

[0036] A support plate 10 is fixedly connected to one end of the top of the base plate 1, and a forward and reverse motor 11 is installed at the bottom end of the support plate 10. A threaded rod 12 is rotatably connected to the movable end of the forward and reverse motor 11. A threaded sleeve 13 is threadedly connected to the outer wall of the threaded rod 12. A push tube 14 is fixedly connected to the outer wall of the threaded sleeve 13. One end surface of the push tube 14 is tightly attached to the bottom end of the push rod 8. By setting a connection mode between the threaded rod 12 and the threaded sleeve 13, the threaded sleeve 13 can move back and forth on the outer wall of the rotating threaded rod 12, and the push tube 14 will also move back and forth together. When the push tube 14 moves toward the direction of the needle 4, the push rod 8 will move the piston 9 toward the direction of the needle 4.

[0037] A top plate 15 is welded to the top of the outer wall of one side of the support plate 10, and a first embedded plate 16 is vertically penetrated at one end of the top of the top plate 15. The height of the first embedded plate 16 is the same as that of the top plate 15. The top surface of the first embedded plate 16 and the top surface of the top plate 15 are both arranged on the same horizontal plane. A plurality of groups of square perforations 17 are provided on the top of the first embedded plate 16, and a second slide groove 18 is provided at the center of the bottom of the first embedded plate 16. The internal space of the square perforation 17 is interconnected with the internal space of the second slide groove 18. A hollow plug 19 is inserted into the inner wall of the square perforation 17, and a control mold is fixedly connected to the inner wall of the hollow plug 19. Block 20, a data line tube 21 is fixedly connected to the bottom of the control module 20, and a contact block 22 is fixedly connected to the bottom end of the data line tube 21. By setting a simple connection method between the hollow plug block 19 and the square through hole 17, the disassembly and assembly steps of the hollow plug block 19 are more convenient and quick, and it is also convenient to change the position of the hollow plug block 19. A spring data line 23 is fixedly connected to the center of the top of the control module 20, and the bottom end of the spring data line 23 is fixedly connected to the bottom end of the forward and reverse motor 11. By setting the spring data line 23, the control module 20 can remotely control the forward and reverse motor 11.

[0038] A second embedded plate 24 is vertically penetrated at the other end of the top of the top plate 15. The height of the second embedded plate 24 is the same as that of the top plate 15. The top surface of the second embedded plate 24 and the top surface of the top plate 15 are both arranged on the same horizontal plane. A spring tube 25 is vertically penetrated at both ends of the second embedded plate 24. A cavity is provided inside the spring tube 25 that penetrates up and down. The cavity is a structure that is wide in the middle and narrow at both ends. The inner wall of the spring tube 25 is slidably connected to a slide rod 26. The top end of the outer wall of the slide rod 26 is sleeved with a return spring 27. The slide rod 26 is vertically penetrated to the top of the outer wall of the slide rod 26. The spring tube 25 is composed of a rod and a baffle ring, which is installed at the center of the outer wall of the vertical rod. The return spring 27 is arranged above the baffle ring. The outer walls of the baffle ring and the return spring 27 are arranged in the wide part of the internal cavity of the spring tube 25. The return spring 27 can drive the slide bar 26 to move downward. The spring tube 25 has second air holes 28 at both the top and bottom ends. A pressure plate 29 is fixedly connected to the bottom of the slide bar 26. When the slide bar 26 moves downward, the pressure plate 29 will press on the top of the syringe 3, thereby fixing the syringe 3 placed in the first slide groove 2.

[0039] A slide plate 30 is fixedly connected to one end of the outer wall of the push tube 14, and the top end of the outer wall of the slide plate 30 is slidably connected to the inner wall of the second slide groove 18. By setting a connection structure between the slide plate 30 and the second slide groove 18, the movement process of the push tube 14 can be limited. When the slide plate 30 touches the contact block 22, the control module 20 will immediately turn off the forward and reverse motor 11. At this time, the push tube 14 and the push rod 8 will no longer move. By inserting the hollow plug block 19 into the square through-hole 17 at different positions, the movement range of the push tube 14 and the push rod 8 can be changed.

[0040] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. An automatic propelling syringe, comprising a base plate (1), characterized in that: A first slide groove (2) is provided at the center of the top of the bottom plate (1), one end of the inner wall of the first slide groove (2) is slidably connected to a syringe (3), a pressure plate (29) is installed above the syringe (3), a piston (9) is slidably connected to the inner wall of the syringe (3), a push rod (8) is fixedly connected at the center of one end face of the piston (9), a support plate (10) is fixedly connected to one end of the top of the bottom plate (1), a top plate (15) is welded to the top of the outer wall of one side of the support plate (10), the top plate (15) is arranged directly above the bottom plate (1), a first embedded plate (16) is vertically penetrated at one end of the top of the top plate (15), and a plurality of groups of A square through hole (17), a second slide groove (18) is provided at the center of the bottom of the first embedded plate (16), the inner space of the square through hole (17) is interconnected with the inner space of the second slide groove (18), a hollow plug block (19) is inserted into the inner wall of the square through hole (17), a control module (20) is fixedly connected to the inner wall of the hollow plug block (19), a data line tube (21) is fixedly connected to the bottom of the control module (20), a contact block (22) is fixedly connected to the bottom end of the data line tube (21), a slide plate (30) is slidably connected to the inner wall of the second slide groove (18), and a push tube (14) capable of pushing the push rod (8) is fixedly connected to the bottom end of the slide plate (30).

2. An automatic propelling syringe according to claim 1, characterized in that: A needle (4) is fixedly connected to one end of the inner wall of the syringe (3), a bottom cover (5) is threadedly connected to the other end of the inner wall of the syringe (3), and a first air hole (6) is opened at one end of the bottom cover (5).

3. An automatic propelling syringe according to claim 2, characterized in that: A slip ring (7) passes through the center of the bottom cover (5), the inner wall of the slip ring (7) is slidably connected to the outer wall of the push rod (8), and a forward and reverse motor (11) is installed at the bottom end of the support plate (10).

4. An automatic propelling syringe according to claim 3, characterized in that: The movable end of the forward and reverse motor (11) is rotatably connected to a threaded rod (12), the outer wall of the threaded rod (12) is threadedly connected to a threaded sleeve (13), and the outer wall of the threaded sleeve (13) is fixedly connected to the inner wall of the push tube (14).

5. An automatic propelling syringe according to claim 3, characterized in that: A spring data line (23) is fixedly connected at the center of the top of the control module (20), the bottom end of the spring data line (23) is fixedly connected to the bottom end of the forward and reverse motor (11), and a second embedded plate (24) vertically penetrates the other end of the top of the top plate (15).

6. An automatic propelling syringe according to claim 5, characterized in that: Both ends of the second embedded plate (24) are vertically penetrated by spring tubes (25), and the inner wall of the spring tube (25) is slidably connected to a sliding rod (26).

7. An automatic propelling syringe according to claim 6, characterized in that: The top end of the outer wall of the slide rod (26) is sleeved with a return spring (27), the top and bottom ends of the spring tube (25) are provided with second air holes (28), and the bottom of the slide rod (26) is fixedly connected with a pressure plate (29).

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