CN211561402U

CN211561402U - Uniform-speed automatic injection device

Info

Publication number: CN211561402U
Application number: CN201921832645.6U
Authority: CN
Inventors: 左继君
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-09-25
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an at uniform velocity automatic injection device, including the injection tube, injection tube outside fixedly connected with thread bush, the inside sliding connection of injection tube has the piston head, piston head one side fixedly connected with piston rod, the spout has all been seted up to the thread bush both sides, spout inner wall sliding connection has the connecting rod, connecting rod one end outside fixedly connected with push ring, the one end fixed connection that the piston head was kept away from to the one end and the piston rod of push ring is kept away from to the connecting rod, push ring one side sliding connection has the propulsion nut, the propulsion nut cover in the thread bush outside and with thread bush threaded connection, one side fixedly connected with telescopic link of push ring is kept away from to the propulsion nut, the utility model relates to an injector technical field. The uniform-speed automatic injection device can realize automatic uniform injection, is simple to operate, is accurate in control during micro quantitative injection, and can reduce the burden of medical staff.

Description

Uniform-speed automatic injection device

Technical Field

The utility model relates to the technical field of injectors, in particular to an automatic injection device at uniform speed.

Background

Syringes are a common medical device, and as early as the 15 th century, kathler, italian, proposed the principle of syringes, primarily for the extraction or injection of gas or liquid with a needle, syringes can also be used for the injection of medical devices, containers, scientific instruments such as those used in chromatography, through rubber diaphragms, and in hospitals or laboratories, people often aspirate or inject liquids with syringes due to the needs of diagnosis, treatment and experimental analysis. The existing syringe is usually pressed manually, in the process of injection or suction, medical staff usually have to be careful and highly nervous, excessive operation can be caused by slight carelessness to cause doctor-patient disputes, and the error of manual pressing operation is large during micro or quantitative injection.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an at uniform velocity automatic injection device has solved present syringe and has used manual pressing usually, at the in-process of injection or suction, and medical personnel will be full of attention usually, and is highly nervous, will lead to the operation to excessively cause doctor-patient's dispute slightly carelessly to the great problem of error is pressed in manual operation during trace or quantitative injection.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an automatic injection device with uniform speed comprises an injection tube, wherein a threaded sleeve is fixedly connected to the outer side of the injection tube, a piston head is slidably connected inside the injection tube, a piston rod is fixedly connected to one side of the piston head, sliding grooves are formed in two sides of the threaded sleeve, a connecting rod is slidably connected to the inner wall of each sliding groove, a push ring is fixedly connected to the outer side of one end of each connecting rod, one end, away from the push ring, of each connecting rod is fixedly connected with one end, away from the piston head, of each piston rod, a push nut is slidably connected to one side of each push ring, the push nut is sleeved on the outer side of the corresponding threaded sleeve and is in threaded connection with the corresponding threaded sleeve, a telescopic rod is fixedly connected to one side, away from the push nut, of each telescopic rod is fixedly connected with a driving plate, the quantitative nut is in threaded connection with the outer side of the threaded sleeve.

Preferably, one end of the injection cylinder, which is far away from the motor, is communicated with an injection needle.

Preferably, the motor is fixed to the syringe by a fixing bracket.

Preferably, the motor is a micro stepping motor.

Preferably, the telescopic rod consists of an inner rod and a sleeve, and the inner rod can slide in the sleeve.

Preferably, the push ring is connected with the outer wall of the threaded sleeve in a sliding mode.

(III) advantageous effects

The utility model provides an automatic injection device at uniform velocity. The method has the following beneficial effects:

(1) the constant-speed automatic injection device is characterized in that a threaded sleeve is fixedly connected to the outer side of an injection tube, a piston head is connected to the inner portion of the injection tube in a sliding manner, a piston rod is fixedly connected to one side of the piston head, sliding grooves are formed in two sides of the threaded sleeve, a connecting rod is connected to the inner wall of each sliding groove in a sliding manner, a push ring is fixedly connected to the outer side of one end of each connecting rod, one end, away from the push ring, of each connecting rod is fixedly connected with one end, away from the piston head, of each piston rod, a push nut is connected to one side of each push ring in a sliding manner, the push nut is sleeved on the outer side of the threaded sleeve and is in threaded connection with the threaded sleeve, a telescopic rod is fixedly connected to one side, away from the, the push nut can be driven by the motor to rotate, the push ring can be pushed while the push nut rotates on the threaded sleeve, the push ring drives the piston rod to slide in the injection tube to realize injection, and the purpose of uniform injection can be realized because the motor rotates at a uniform speed.

(2) This automatic injection device at uniform velocity has quantitative nut through the sliding connection of the one side that the pushing ring kept away from the pushing nut, quantitative nut and thread bush outside threaded connection, when needs quantitative injection, remove quantitative nut to the position of required injection volume, when the pushing ring removed to quantitative nut's position during the injection, quantitative nut can support the pushing ring and make its stop motion, has reached the purpose of quantitative injection.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the appearance structure of the present invention;

fig. 3 is a schematic cross-sectional structure diagram of the present invention.

In the figure: the injection device comprises a syringe 1, a thread bushing 2, a piston head 3, a piston rod 4, a sliding chute 5, a connecting rod 6, a push ring 7, a push nut 8, a telescopic rod 9, a driving plate 10, a motor 11, an injection needle 12, a fixed frame 13 and a quantitative nut 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an automatic injection device with uniform speed comprises an injection tube 1, a threaded sleeve 2 is fixedly connected to the outer side of the injection tube 1, a piston head 3 is connected to the inner side of the injection tube 1 in a sliding manner, a piston rod 4 is fixedly connected to one side of the piston head 3, sliding grooves 5 are formed in two sides of the threaded sleeve 2, a connecting rod 6 is connected to the inner wall of each sliding groove 2 in a sliding manner, a push ring 7 is fixedly connected to the outer side of one end of the connecting rod 6, the end, away from the push ring 7, of the connecting rod is fixedly connected to one end, away from the piston head 3, of the piston rod 4, a push nut 8 is connected to one side of the push ring 7 in a sliding manner and can move transversely on the threaded sleeve during rotation, the push ring is conveniently pushed to drive the piston rod to slide in the injection tube, the push nut 8 is sleeved, one side fixedly connected with motor 11's that telescopic link 9 was kept away from to drive plate 10 drive shaft, conveniently drives through drive plate and telescopic link and impels the nut and rotate, and one side sliding connection that impels nut 8 was kept away from to throw-out collar 7 has quantitative nut 14, can support the throw-out collar in the settlement position, makes things convenient for quantitative injection, quantitative nut 14 and 2 outside threaded connection of thread bush.

The end of the syringe 1 remote from the motor 11 is connected with an injection needle 12.

The motor 11 is fixed on the injection tube 1 through a fixing frame 13, and quantitative scales are carved on the side surface of the fixing frame 13.

The motor 11 is a micro stepping motor.

The telescopic rod 9 consists of an inner rod and a sleeve and the inner rod can slide in the sleeve.

The push ring 7 is connected with the outer wall of the thread sleeve 2 in a sliding way.

When the quantitative injection device is used, the motor 11 is turned on, the driving shaft of the motor 11 drives the driving plate 10 to rotate, the driving plate 10 drives the telescopic rod 9 to rotate, the telescopic rod 9 drives the pushing nut 8 to rotate, the pushing nut 8 rotates on the threaded sleeve 2 and moves transversely to push the pushing ring 7, the pushing ring 7 drives the piston rod 4 to move transversely through the connecting rod 6, the piston rod 4 drives the piston head 3 to slide in the injection tube 1, the piston head 3 slides to compress injection liquid to be injected from the injection needle head 12, when quantitative injection is needed, the quantitative nut 14 is moved to corresponding scales on the fixing frame 13, and when the pushing nut 8 pushes the pushing ring 7 to one side of the quantitative nut 14, the quantitative nut 14 abuts against the pushing ring to enable the pushing ring to stop moving.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. The utility model provides a uniform velocity automatic injection device, includes injection cylinder (1), its characterized in that: the injection tube is characterized in that a threaded sleeve (2) is fixedly connected to the outer side of the injection tube (1), a piston head (3) is slidably connected to the inner portion of the injection tube (1), a piston rod (4) is fixedly connected to one side of the piston head (3), sliding grooves (5) are formed in two sides of the threaded sleeve (2), a connecting rod (6) is slidably connected to the inner wall of each sliding groove (5), a push ring (7) is fixedly connected to the outer side of one end of the connecting rod (6), one end, far away from the push ring (7), of the connecting rod (6) is fixedly connected with one end, far away from the piston head (3), of the piston rod (4), a push nut (8) is slidably connected to one side of the push ring (7), the push nut (8) is sleeved on the outer side of the threaded sleeve (2) and is in threaded connection with the threaded sleeve (2), a telescopic rod (9) is fixedly connected to one side, one side, far away from telescopic link (9), of drive plate (10) is fixedly connected with the drive shaft of motor (11), one side, far away from push nut (8), of push ring (7) is connected with quantitative nut (14) in a sliding manner, and quantitative nut (14) and thread connection outside threaded sleeve (2).

2. The constant velocity automatic injection device of claim 1, wherein: one end of the injection cylinder (1) far away from the motor (11) is communicated with an injection needle (12).

3. The constant velocity automatic injection device of claim 1, wherein: the motor (11) is fixed on the injection tube (1) through a fixing frame (13), and quantitative scales are engraved on the side face of the fixing frame (13).

4. The constant velocity automatic injection device of claim 1, wherein: the motor (11) is a micro stepping motor.

5. The constant velocity automatic injection device of claim 1, wherein: the telescopic rod (9) consists of an inner rod and a sleeve, and the inner rod can slide in the sleeve.

6. The constant velocity automatic injection device of claim 1, wherein: the push ring (7) is connected with the outer wall of the threaded sleeve (2) in a sliding manner.