A micro pump injection device

Abstract

The present application provides a kind of micro pump injection device, including first connecting part, second connecting part, third connecting part and fourth connecting part, first connecting part and second connecting part fixed connection, third connecting part and fourth connecting part fixed connection, second connecting part and third connecting part are connected, motor, gear set and fixed plate are installed on fourth connecting part, the output shaft of motor connects gear set, first screw is screwed on fixed plate, first screw tail end is equipped with first gear and gear set connection, syringe is located in first connecting part, and nipple and the front connecting part of the front end of first connecting part are stretched out, the piston of medicine injector corresponds its rear first screw.The present application is driven by starting motor to work in turn to drive output shaft and gear set to work to drive first screw to move forward on fixed plate to push the piston corresponding thereto in medicine injector to push medicine to output from nipple, by gear set multiple mileage to play the role of fine adjustment.

Description

Technical Field

[0001] This invention relates to the medical field, specifically to a micro-infusion pump device. Background Technology

[0002] A micro-injection pump (or micro-pump) is a new type of pumping instrument that delivers small amounts of fluid precisely, in minute quantities, uniformly, and continuously. It consists of a controller, an actuator, and a syringe. However, since the purchased micro-infusion pumps are often expensive, the actual number purchased is very small. In clinical practice, in order to increase the number of injection devices, simple devices are usually used, which are generally made by adding a telescopic cylinder to the empty syringe to control the propulsion, etc. However, in reality, the injection flow rate is often not accurately controlled. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a micro-infusion pump device that can perform micro-adjustment injection of drugs, in order to address the above-mentioned shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a micro-injection pump device, comprising a first connecting part, a second connecting part, a third connecting part, and a fourth connecting part, wherein the first connecting part and the second connecting part are fixedly connected, the third connecting part and the fourth connecting part are fixedly connected, the second connecting part and the third connecting part are connected, a motor, a gear set, and a fixing plate are mounted on the fourth connecting part, the output shaft of the motor is connected to the gear set, a first screw is screwed onto the fixing plate, the tail end of the first screw is provided with a first gear connected to the gear set, a syringe is located in the first connecting part with its nipple extending out from the front connecting part provided at the front end of the first connecting part, and the piston of the drug syringe corresponds to the first screw behind it.

[0005] Furthermore, the first connecting part and the second connecting part are cylindrical structures, and the cross-sections of the third connecting part and the fourth connecting part are arc-shaped structures.

[0006] Furthermore, the bottoms of the second and third connecting parts are connected by a hinge, and a second screw is spirally connected to the third connecting part. The end of the second screw is connected to a stop plate, which corresponds to the hand loop side ear of the drug syringe.

[0007] Furthermore, a pair of opposing limiting plates are provided on the inner wall of the second connecting part, the abutment is between the limiting plates, and the hand hook side ear is located between the limiting plate and the connection between the first connecting part and the second connecting part.

[0008] Furthermore, the first connecting part is provided with a first base at its bottom, and the fourth connecting part is provided with a second base at its lower end. The first base is provided with a first mounting cavity for installing a power supply at its bottom, and the second base is provided with a second mounting cavity for placing a remote control at its bottom. The fourth connecting part has a built-in processor, and the processor is connected to the power supply, the remote control, and the motor.

[0009] Furthermore, the micro-injection pump device also includes an auxiliary syringe, the inner cavity of which is filled with nitrogen gas, the side wings of which correspond to the inner diameter of the second connecting part, the nipple end of which is connected to a flexible tube, and the inner wall of the first connecting part is provided with an elastic air bladder, the nozzle of which can be engaged with the flexible tube.

[0010] Furthermore, the fixing plate is provided with a first spiral through hole, the first screw passes through the first spiral through hole and is screwed to it, the gear set has multiple gears inside, the output end of the gear set meshes with the first gear, and the input end of the gear set meshes with a second gear on the output shaft of the motor.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The present invention places a drug syringe containing the injected drug at the first connecting part, and then the piston of the drug syringe corresponds to the first screw behind it. By starting the motor, the output shaft and gear set are driven in sequence, thereby driving the first screw to move forward on the fixed plate, thereby pushing the corresponding piston in the drug syringe to push the drug out from the nipple. The gear set plays a fine-tuning role through multiple mileages.

[0012] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a micro-injection pump device.

[0014] Figure 2 This is a schematic diagram of the left side of the junction between the second and third connecting parts.

[0015] Figure 3 This is a schematic diagram of the right side of the junction between the second and third connecting parts.

[0016] Figure 4 This is a schematic diagram of the auxiliary syringe. Detailed Implementation

[0017] To make the technical means, creative features, objectives, and effects of this invention clearer and easier to understand, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments: This invention proposes a micro-injection pump device, comprising a first connecting part 1, a second connecting part 2, a third connecting part 3, and a fourth connecting part 4. The first connecting part 1 and the second connecting part 2 are fixedly connected, the third connecting part 3 and the fourth connecting part 4 are fixedly connected, the second connecting part 2 and the third connecting part 3 are connected, and a motor 5, a gear set 6, and a fixing plate 7 are mounted on the fourth connecting part 4. The output shaft of the motor 5 is connected to the gear set 6. A first screw 8 is screwed onto the fixing plate 7. The tail end of the first screw 8 is provided with a first gear 31 connected to the gear set 6. A syringe 9 is located inside the first connecting part 1, with its nipple 12 extending from a front connecting part 11 at the front end of the first connecting part 1. The piston 10 of the syringe 9 corresponds to the first screw 8 behind it. The syringe 9 includes 2ml, 5ml, and 10ml sizes, and an indwelling needle is connected to the front of the nipple 12.

[0018] In a specific embodiment, the first connecting part 1 and the second connecting part 2 are cylindrical structures, and the cross-sections of the third connecting part 3 and the fourth connecting part 4 are arc-shaped structures.

[0019] In a specific embodiment, the bottoms of the second connecting part 2 and the third connecting part 3 are connected by a hinge. Before inserting the drug syringe 9, the second connecting part 2 and the third connecting part 3 are separated around the hinge. A second screw 16 is spirally connected to the third connecting part 3. The end of the second screw 16 is connected to a stop plate 14. The stop plate 14 corresponds to the hand loop side ear 13 of the drug syringe 9. The tail end of the second screw 16 has a rotating plate 15 for rotation. By rotating the rotating plate 15, the second screw 16 is driven to rotate horizontally in and out of the second spiral through hole 23 provided on the third connecting part 3, thereby pressing the hand loop side ear 13 against the stop plate 14, thereby locking the drug syringe 9 with the front connecting part 11. A nut 17 is screwed onto the second screw 16 and is located on the left side of the second spiral through hole 23.

[0020] The inner wall of the second connecting part 2 is provided with a pair of opposing limiting plates 24, the abutment 14 is between the limiting plates 24, and the hand hook side ear 13 is located between the limiting plates 24 and the connection between the first connecting part 1 and the second connecting part 2.

[0021] In a specific embodiment, the first connecting part 1 is provided with a first base 19 at its bottom, and the fourth connecting part 4 is provided with a second base 21 at its lower end. The first base 19 is provided with a first mounting cavity 18 for installing a power supply at its bottom, and the second base 21 is provided with a second mounting cavity 20 for placing a remote control at its bottom. The fourth connecting part 4 has a built-in processor, which is connected to the power supply, the remote control and the motor 5. The processor indirectly controls the first screw 8 by controlling the speed and direction of the motor 5 through the remote control.

[0022] As a specific embodiment, the micro-injection pump device further includes an auxiliary syringe 25, the inner cavity of which is filled with nitrogen. The side wings 26 of the auxiliary syringe 25 correspond to the inner diameter of the second connecting part 2. The nipple end 28 of the auxiliary syringe 25 is connected to a flexible tube. An elastic air bladder 29 is provided on the inner wall of the first connecting part 1. The air nozzle of the elastic air bladder 29 can be engaged with the flexible tube. The auxiliary syringe 25 has an auxiliary piston 27 corresponding to the first screw 8. The first screw 8 pushes the auxiliary piston 27 to inflate the elastic air bladder 29 to a suitable range. The barrel of the auxiliary syringe 25 corresponds to different sizes of drug injectors 9, so that when the drug injector 9 is placed in the first connecting part 1, it is first limited by the elastic air bladder 29.

[0023] In a specific embodiment, the fixing plate 7 is provided with a first spiral through hole 30, the first screw 8 passes through the first spiral through hole 30 and is screwed to it, the gear set 6 has multiple gears built in, the output end 32 of the gear set 6 meshes with the first gear 31, and the input end 34 of the gear set 6 meshes with the second gear 33 provided on the output shaft of the motor 5.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A micro-infusion pump device, characterized in that: It includes a first connecting part (1), a second connecting part (2), a third connecting part (3) and a fourth connecting part (4). The first connecting part (1) and the second connecting part (2) are fixedly connected. The third connecting part (3) and the fourth connecting part (4) are fixedly connected. The second connecting part (2) and the third connecting part (3) are connected. The fourth connecting part (4) is equipped with a motor (5), a gear set (6) and a fixing plate (7). The output shaft of the motor (5) is connected to the gear set (6). The fixing plate (7) is screwed with a first screw (8). The tail end of the first screw (8) is provided with a first gear (31) which is connected to the gear set (6). The syringe (9) is located in the first connecting part (1) and its nipple (12) extends out from the front connecting part (11) provided at the front end of the first connecting part (1). The piston (10) of the drug syringe (9) corresponds to the first screw (8) behind it.

2. The micro-infusion pump device according to claim 1, characterized in that: The first connecting part (1) and the second connecting part (2) are cylindrical structures, and the cross-sections of the third connecting part (3) and the fourth connecting part (4) are arc structures.

3. The micro-infusion pump device according to claim 1, characterized in that: The bottom of the second connecting part (2) and the third connecting part (3) are connected by a hinge. The third connecting part (3) is spirally connected with a second screw (16). The end of the second screw (16) is connected to a stop plate (14). The stop plate (14) corresponds to the hand loop side ear (13) of the drug syringe (9).

4. The micro-infusion pump device according to claim 3, characterized in that: The inner wall of the second connecting part (2) is provided with a pair of opposing limiting plates (24), the abutment (14) is between the limiting plates (24), and the hand hook side ear (13) is located between the limiting plate (24) and the connection between the first connecting part (1) and the second connecting part (2).

5. The micro-infusion pump device according to claim 3, characterized in that: The first connecting part (1) has a first base (19) at its bottom, and the fourth connecting part (4) has a second base (21) at its lower end. The first base (19) has a first mounting cavity (18) for installing a power supply at its bottom, and the second base (21) has a second mounting cavity (20) for placing a remote controller at its bottom. The fourth connecting part (4) has a built-in processor, which is connected to the power supply, the remote controller and the motor (5).

6. The micro-infusion pump device according to claim 1, characterized in that: The micro-injection pump device further includes an auxiliary syringe (25), the inner cavity of which is filled with nitrogen gas, the side wings (26) of which correspond to the inner diameter of the second connecting part (2), the nipple end (28) of which is connected to a flexible tube, and the inner wall of the first connecting part (1) is provided with an elastic airbag (29), the nozzle of which can be engaged with the flexible tube.

7. The micro-infusion pump device according to claim 1, characterized in that: The fixing plate (7) is provided with a first spiral through hole (30), the first screw (8) passes through the first spiral through hole (30) and is screwed to it, the gear set (6) has multiple gears inside, the output end (32) of the gear set (6) meshes with the first gear (31), and the input end (34) of the gear set (6) meshes with the second gear (33) on the output shaft of the motor (5).

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