CN106492311A - A kind of hand-held can auxiliary syringe auto-pumping and the device that injects - Google Patents

Abstract

The invention relates to a hand-held device for assisting automatic suction and injection of a syringe, which includes a syringe holder, a slider and a driving device. The slider is inserted in the syringe holder and can perform linear reciprocating motion relative to the syringe holder. There is a fastening device for fastening the syringe on the syringe holder, and a piston rod fixing device for connecting the piston rod is arranged on the slider. The invention has the advantages of simple structure, small volume and convenient use, can provide the functions of injecting and sucking medicine at a constant speed, and reduces the labor intensity of medical personnel.

Description

A hand-held device that can assist automatic suction and injection of syringes

technical field

The invention relates to the technical field of medical devices, in particular to a hand-held automatic suction and injection device that can assist a syringe.

Background technique

A syringe generally includes a syringe, a piston and a piston rod. For the convenience of injection and suction, a disc-shaped push cake is provided at the rear end of the piston rod. At present, the syringe auxiliary devices commonly used in clinical practice are usually large in size, and are mostly used for continuous uniform injection of drugs. Especially when a large amount of medicine is repeatedly sucked, it may cause skin and joint damage of medical staff; another type of integrated automatic dispensing device with suction function contains many parts and has a complicated structure. Large-scale dispensing requires the use of special consumables, and clinical use has certain limitations.

Contents of the invention

The invention aims to provide a hand-held device that can assist the automatic suction and injection of a syringe, so as to provide convenience for clinical suction, dispensing and injection treatment.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

A hand-held device that can assist the automatic suction and injection of a syringe, including a syringe support, a slider and a driving device, the slider is inserted in the syringe support and can perform linear reciprocating motion relative to the syringe support. A fastening device for fastening the syringe on the syringe holder is provided on the syringe holder, and a piston rod fixing device for connecting the piston rod is provided on the slider.

Further, the moving direction of the slider is parallel to the axis of the syringe holder, the top surface of the syringe holder has a bracket for placing the syringe, the front end of the bracket is equipped with a front block, and the front block has a needle for the needle to pass through. out the through hole.

Further, the piston rod fixing device can move back and forth relative to the slider, and the moving direction of the piston rod fixing device is the same as that of the slider.

Further, one end of the fastening device is rotatably connected to the syringe holder, and the other end of the fastening device is detachably connected to the syringe holder across the bracket.

Further, there is a bayonet on the top of the piston rod fixing device for holding the cake.

Further, it also includes a transmission device connected with the slider, and the transmission device is driven by the driving device in the syringe holder.

Further, the driving device includes a motor, and the transmission device includes a screw, one end of the screw is fixedly connected to the output shaft of the motor, and the free end of the screw is screwed into a screw hole in the slider.

Further, the driving device includes a motor, the transmission device includes a rack, the output shaft of the motor is fixedly connected to the gear, the gear is in transmission cooperation with the rack, and the slider is fixedly connected to the rack.

Further, the outer wall of the syringe holder is provided with an operation module for controlling the driving device.

Further, the power supply for the driving device is set in the syringe holder, and the operation module includes a switch key, a forward key and a backward key. The speed of the slider forward or backward is proportional to the number of times the forward or backward key is pressed.

Further, the operation module includes a touch screen, and the illustrated syringe holder is provided with a single-chip microcomputer and a power supply, and the illustrated driving device, the touch screen, and the power supply are all electrically connected to the single-chip electromechanical device.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention is simple in structure, small in size, convenient to use, can provide the functions of injecting and pumping medicine at a constant speed, and reduce the labor intensity of medical staff;

2. The user can press the button according to the need to realize the slow, medium, fast forward and retreat of the syringe piston, and complete the uniform injection and withdrawal functions;

3. Using single-chip microcomputer control, high degree of automation;

4. The present invention can complete the suction and injection of medicine with one hand, and is especially suitable for operators with only one hand.

Description of drawings

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the structural representation of transmission device in embodiment 3;

Fig. 3 is the structural representation that syringe is installed on the present invention;

Fig. 4 is the functional block diagram of embodiment 6;

In the figure: 1-needle holder, 2-slider, 3-bracket, 4-fastening device, 5-piston rod fixing device, 6-bayonet, 7-front block, 8-through hole, 9- Operation module, 10-charging hole, 11-battery slot, 12-syringe, 13-piston rod, 14-push cake, 15-transmission device.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, the hand-held device for assisting automatic suction and injection of syringes disclosed in this embodiment includes a syringe holder 1, a slider 2 and a driving device, the slider 2 is inserted in the syringe holder 1 and can be Reciprocating linearly relative to the syringe holder 1, the syringe holder 1 has a fastening device 4 for fastening the syringe 12 on the syringe holder 1, and the slider 2 has a piston rod fixing device for connecting the piston rod 13 5.

Preferably, the moving direction of the slider 2 is parallel to the axis of the syringe holder 1, the top surface of the syringe holder 1 has a bracket 3 for placing the syringe 12, the front end of the bracket 3 is equipped with a front stop 7, and the front stop 7 There is a through hole 8 for the needle to pass through, and the through hole 8 can be matched with various types of syringes. There is a bayonet 6 for blocking the push cake 14 on the top of the piston rod fixing device 5 .

The fastening device 4 can be selected from a fixing clip, a fixing belt or a clamp. In order to fasten the syringe conveniently, one end of the fastening device 4 is rotationally connected with the syringe holder 1 , and the other end of the fastening device 4 straddles the bracket groove 3 and is detachably connected with the syringe holder 1 . In order to facilitate the fastening of syringes of different specifications and models, the length of the fastening device 4 is adjustable.

The slide block 2 is inserted in the guide groove of the syringe support 1, and the slide block 2 can be a round bar, a rectangular bar or a bar of other shapes. In order to increase the grip comfort, the outer surfaces of the syringe support 1 and the slider 2 are arc surfaces. The linear reciprocating motion of the slider 2 is driven by the transmission device 15. The slider 2 is connected to the transmission device 15. The transmission device 15 is driven by the driving device in the syringe holder 1. The driving device is such as a motor, which is driven by the forward or reverse rotation of the motor. Slider 2 forward or backward. The power supply for the driving device is arranged in the syringe holder 1, and the syringe holder 1 is provided with a battery slot 11 for installing a battery. The power supply can be a rechargeable battery, and the syringe holder 1 is provided with a charging hole 10 . The outer wall of the syringe holder 1 is provided with an operation module 9 for controlling the driving device. Further, the operation module 9 includes a switch key, a forward key and a backward key. Preferably, the speed at which the slider 2 advances or retreats is proportional to the number of times the forward key or the backward key is pressed. The circuit structure of this control method is a prior art and will not be repeated here.

When in use, as shown in Figure 3, the syringe 12 of the syringe is placed in the bracket 3, the needle passes through the through hole 8, the front end of the syringe 12 is against the front block 7, and the push cake 14 is stuck in the bayonet 6 , the fastening device 4 binds the syringe 12 and the syringe support 1 together. During the movement, the piston rod fixing device 5 keeps the piston rod 13 and the slider 2 relatively stationary.

Drug inhalation process: insert the needle into the liquid medicine, press the switch button and the back button in turn, the motor rotates to drive the slider 2 to move back, and the slider 2 drives the piston rod 13 to move back, so that the piston on the piston rod 13 completes the drug extraction. Finally press the power button. Injection process: press the switch button and the forward button in turn, the motor rotates to drive the slider 2 to move forward, the slider 2 drives the piston rod 13 to move forward, so that the piston on the piston rod 13 completes the injection, and finally press the switch button.

Example 2

The difference between this embodiment and Embodiment 1 is that: in order to be suitable for syringes of different specifications, the piston rod fixing device 5 can move back and forth relative to the slider 2, and the moving direction of the piston rod fixing device 5 is the same as that of the slider 2.

Example 3

The difference between this embodiment and embodiment 1 or embodiment 2 is that: as shown in FIG. 2 , the transmission device 15 includes a screw, and the screw is threadedly matched with the screw hole in the slider 2 . The screw rod is fixedly connected with the output shaft of the motor. The output shaft of the motor drives the screw to rotate, and the rotation of the screw drives the slider 2 to move linearly.

Example 4

The difference between this embodiment and embodiment 1 or embodiment 2 is: the motor and the slider 2 are driven by rack and pinion, the transmission device 15 includes a rack, and the rack is fixedly connected to the slider 2 . The gear is keyed to the output shaft of the motor, the rack and the gear cooperate, and the rack and pinion convert the rotational motion of the motor into the linear motion of the slider 2 .

Example 5

The difference between this embodiment and embodiment 1 or embodiment 2 is that the driving device is an air cylinder, the transmission device 15 is driven by the air cylinder in the syringe holder 1, and the air cylinder is a double-acting air cylinder. The transmission device 15 is a transmission rod, one end of the transmission rod is connected with the piston rod of the cylinder, and the other end of the transmission rod is connected with the slide block 2; certainly the slide blocks 2 can also be directly connected with the piston rod of the cylinder. Slider 2 makes linear reciprocating motion under the drive of piston rod.

Example 6

The difference between this embodiment and the above five embodiments is that the operation module 9 is not in the form of buttons, but uses a touch screen to adjust the control parameters of the driving device. The syringe support 1 is provided with a single-chip microcomputer. As shown in Figure 4, the driving device, touch screen and power supply are all connected with the single-chip electromechanical. According to different injection volume and injection speed requirements, adjust the control parameters of the drive device through the touch screen to realize automatic control. Of course, when the operation module 9 is in the form of buttons, its control principle is the same as in this embodiment, and the control principle and circuit structure are conventional means in the field, and will not be repeated here.

The invention has the advantages of simple structure, small size and convenient use, and can provide the functions of injecting and pumping medicine at a constant speed, reducing the labor intensity of medical staff; the user can press the button as required to realize slow, medium, fast forward and return of the syringe piston. Back, to complete the uniform injection and withdrawal functions. Using single-chip microcomputer control, high degree of automation. In addition, the present invention can complete the suction and injection of medicine with one hand, and is especially suitable for operators with only one hand.

Certainly, the present invention also can have other multiple implementation modes, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. a hand-held device that can assist syringe automatic suction and injection, it is characterized in that: comprise syringe support (1), slide block (2) and drive unit, described slide block (2) is inserted in syringe in the support (1) and can perform linear reciprocating motion relative to the syringe support (1), and there is a fastening device on the syringe support (1) to fasten the syringe (12) to the syringe support (1) (4), there is a piston rod fixing device (5) for connecting the piston rod (13) on the slider (2). 2. The hand-held device for automatically aspirating and injecting the syringe according to claim 1, characterized in that: the moving direction of the slider (2) is parallel to the axis of the syringe holder (1), and the needle There is a bracket (3) for placing the needle cylinder (12) on the top surface of the cylinder holder (1), and a front stopper (7) is installed on the front end of the bracket (3), and there is a hole for the needle to pass through on the front stopper (7). through holes (8). 3. The hand-held device for assisting automatic suction and injection of the syringe according to claim 1, characterized in that: the piston rod fixing device (5) can move back and forth relative to the slider (2), and the piston rod fixing device The moving direction of (5) is identical with the moving direction of slide block (2). 4. The hand-held device for assisting automatic suction and injection of the syringe according to claim 2, characterized in that: one end of the fastening device (4) is rotatably connected to the syringe holder (1), and the fastening device (4) ) and the other end straddles the bracket groove (3) and is detachably connected with the syringe holder (1). 5. The hand-held device for assisting automatic suction and injection of the syringe according to claim 1, characterized in that: the top of the piston rod fixing device (5) has a bayonet (6) for blocking the push cake (14) ). 6. The hand-held device for assisting automatic suction and injection of the syringe according to claim 1, characterized in that: it also includes a transmission device (15) connected with the slider (2), and the transmission device (15) is composed of The driving device in the syringe holder (1) drives. 7. The hand-held device for assisting automatic suction and injection of the syringe according to claim 6, characterized in that: the driving device includes a motor, the transmission device (15) includes a screw, and one end of the screw is connected to the output shaft of the motor Fixedly connected, the free end of the screw rod is threadedly engaged with the screw hole in the slider (2). 8. The hand-held device for assisting automatic suction and injection of the syringe according to claim 6, characterized in that: the drive device includes a motor, the transmission device (15) includes a rack, and the output shaft of the motor It is fixedly connected with the gear, the gear is in transmission cooperation with the rack, and the slider (2) is fixedly connected with the rack. 9. The hand-held device for assisting automatic suction and injection of the syringe according to claim 6, characterized in that: the power supply for the driving device is set in the syringe holder (1), and the outer wall of the syringe holder (1) is set There is an operation module (9) for controlling the motor, and the operation module (9) includes a switch key, a forward key and a backward key. 10. The hand-held device for assisting automatic suction and injection of the syringe according to claim 6, characterized in that: the outer wall of the syringe holder (1) is provided with an operation module (9) for controlling the driving device, and the operation module ( 9) Including a touch screen, the shown syringe holder (1) is provided with a single-chip microcomputer and a power supply, and the shown driving device, touch screen and power supply are all connected with the single-chip electromechanical.