CN111298242A - An injection instrument with a hypodermic anticoagulant needle with a delay function - Google Patents

Abstract

The invention relates to a syringe, in particular to a hypodermic anticoagulation needle injection instrument with a time delay function, comprising a syringe barrel and a piston slidably arranged inside the syringe barrel. One side of the push-puller is provided with a motor, the motor transmits torque to the automatic push-puller through the transmission box, the motor is connected to the control box through a signal line, and the control box controls the delay action of the motor. The present invention cooperates with the automatic push-puller through a time relay. Controlling the action of anticoagulation needle injection instead of manual, so that medical staff can perfectly control the residence time during injection, the control is precise, and the work efficiency is greatly improved.

Description

An injection instrument with a hypodermic anticoagulant needle with a delay function

technical field

The invention relates to a syringe, in particular to an injection instrument with a hypodermic anticoagulation needle with a delay function.

Background technique

In the clinical subcutaneous anticoagulation needle injection process, when injecting around the belly button, he requires ten seconds to insert the needle and stop for ten seconds before withdrawing the needle. Generally, the existing technology is manually mastered by medical staff and cannot be accurate. In view of this, we propose a hypodermic anticoagulation needle injection instrument with a time-delay function.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a hypodermic anticoagulation needle injection device with a time delay function, so as to solve the problems raised in the above-mentioned background art.

To achieve the above object, the present invention provides the following technical solutions:

A hypodermic anticoagulation needle injection instrument with a time delay function, comprising a needle cylinder and a piston slidably arranged inside the needle cylinder, an automatic push-pull device is arranged above the needle cylinder, and an automatic push-pull device is arranged on the top of the automatic push-pull device. One side is provided with a motor, the motor transmits torque to the automatic push-puller through a transmission box, the motor is connected to a control box through a signal line, and the control box controls the delay action of the motor.

Preferably, the automatic push-pull device includes a cylinder body, and a lead screw and a plurality of guide rods parallel to and on both sides of the lead screw are vertically arranged inside the cylinder body, and a slider is also arranged inside the cylinder body. , both sides of the slider are penetrated by the guide rod and can slide on the guide rod, the upper and lower sides of the slider are provided with screw nuts, and the screw penetrates the slider and the screw The screw nut is threadedly connected with the lead screw nut, a piston rod is connected to the bottom of the lead screw nut located below, and the end of the piston rod extends to the outside of the cylinder body and is fixed to the piston through a fixing plate.

Preferably, a large gear and a small gear are arranged in the transmission box, the large gear and the small gear are meshed with each other, the large gear is coaxially and fixedly connected with the top end of the lead screw, and the small gear is connected to the top of the lead screw. The output shaft of the motor is coaxially and fixedly connected.

Preferably, a second fixing disk is fixed on the circumferential outer wall of the needle cylinder, a first fixing disk is sleeved on the circumferential outer wall of the cylinder, and the first fixing disk and the second fixing disk are fitted with nuts through bolts Lock and fix.

Preferably, a motor control circuit is provided on the circuit board of the control box, the motor control circuit is connected to a three-phase power supply through a power cord, and two switches SB2 and SB3 are provided on the control box, which are respectively connected with SB2 and SB2 and SB3. Two contactors KM1 and KM2 are connected in series with SB3, a time relay KA1 is connected in series between the KM1 and SB2, and a time relay KA2 is connected in series between the KM2 and SB3.

Compared with the prior art, the beneficial effects of the present invention are as follows:

The invention uses the time relay to cooperate with the automatic push-pull device, and replaces the manual anticoagulation needle injection action by intelligent and mechanical control, so that the medical staff can perfectly control the residence time during injection, the control is precise, and the work efficiency is greatly improved.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the overall structure sectional view of the present invention;

Fig. 3 is the partial structure sectional view of the present invention;

Fig. 4 is the partial transmission structure schematic diagram of the present invention;

FIG. 5 is a schematic diagram of circuit connection of the present invention.

In the figure: syringe 1, piston 10, automatic pusher 2, cylinder 20, lead screw 21, piston rod 22, slider 23, lead screw nut 230, fixed plate 24, guide rod 25, transmission box 3, large gear 30. Pinion gear 31, motor 4, control box 5, first fixed disk 6, second fixed disk 7.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figures 1-5, the present invention provides a technical solution:

A hypodermic anticoagulant needle injection instrument with a delay function, comprising a syringe 1 and a piston 10 slidably arranged inside the syringe 1, an automatic push-pull 2 is arranged above the syringe 1, There is a motor 4 on one side, the motor 4 transmits torque with the automatic pusher 2 through the transmission box 3, the motor 4 is connected to the control box 5 through a signal line, and the control box 5 controls the motor 4 to delay the action.

Specifically, the automatic push-pull device 2 includes a cylinder body 20 , a lead screw 21 and a plurality of guide rods 25 on both sides of the lead screw 21 and parallel to the lead screw 21 are vertically arranged inside the cylinder body 20 , and a slider 23 is also arranged inside the cylinder body 20 . , both sides of the slider 23 are penetrated by the guide rod 25 and can slide on the guide rod 25. The upper and lower sides of the slider 23 are provided with screw nuts 230. The screw 21 penetrates the slider 23 and the screw nut 230 and is connected with The lead screw nut 230 is threadedly connected, the bottom of the lead screw nut 230 located below is connected with the piston rod 22, and the end of the piston rod 22 extends to the outside of the cylinder 20 and is fixed with the piston 10 through the fixing plate 24, and the lead screw 21 rotates through the screw The thread engagement force of the lever nut 230 converts the rotary motion into linear motion, drives the piston rod 22 to move up and down, and further drives the piston 10 to move up and down in the syringe 1 to simulate a human push-pull injection action.

Further, the transmission box 3 is provided with a large gear 30 and a small gear 31. The large gear 30 and the small gear 31 are meshed with each other. The shafts are coaxially and fixedly connected, and the motor 4 transmits the torque to the lead screw 21 through the transmission of the large gear 30 and the pinion gear 31 to provide power for the rotation of the lead screw 21 .

Next, a second fixing plate 7 is fixed on the circumferential outer wall of the needle cylinder 1, a first fixing plate 6 is sleeved on the circumferential outer wall of the cylinder block 20, and the first fixing plate 6 and the second fixing plate 7 are locked and fixed by bolts and nuts. , used to fix the syringe 1 and the cylinder 20 together.

In addition, a motor control circuit is provided on the circuit board of the control box 5, and the motor control circuit is connected to the three-phase power supply through the power cord. The control box 5 is provided with two switches SB2 and SB3, which are respectively connected in series with SB2 and SB3. The two contactors KM1 and KM2, the time relay KA1 and KM2 are connected in series between KM1 and SB2, and the time relay KA2 is connected in series between KM2 and SB3. There is also a main power switch SB1 at the bottom of the control box 5. Turn on the power switch Q, press the forward rotation button SB2, under the action of the time relay KA1, start after a delay of 10 seconds, the contactor KM1 coil is energized and closed, its main contact is closed, the normally open auxiliary contact is closed and self-locking, the motor is positive change. At this time, the phase sequence of the power supply connected to the motor is A-B-C, press the reverse start button SB3, and start the start after a delay of 10 seconds under the action of the time relay KA2. At this time, the normally closed contact of SB3 first disconnects the forward rotation contactor KM1. Coil power supply, the normally open contact of button SB3 is closed, and the power supply of the reverse contactor KM2 coil is turned on, so that KM2 is pulled in, the auxiliary normally open contact is closed and self-locking, the main contact is closed, and the motor is reversed. At this time, the phase sequence of the power supply connected to the motor is C-B-A.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention, without departing from the spirit and scope of the present invention. Under the premise, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. An injection instrument with a hypodermic anticoagulant needle with a time delay function, comprising a syringe (1) and a piston (10) slidably arranged inside the syringe (1), characterized in that: the syringe An automatic push-pull device (2) is arranged above (1), and a motor (4) is arranged on one side of the automatic push-pull device (2). The motor (4) communicates with the automatic push-pull device through the transmission box (3). The motor (2) transmits torque, the motor (4) is connected to a control box (5) through a signal line, and the control box (5) controls the delay action of the motor (4); the automatic push-pull device (2) includes a cylinder block (20), a lead screw (21) and a plurality of guide rods (25) on both sides of the lead screw (21) and parallel to the lead screw (21) are vertically arranged inside the cylinder body (20). ) is also provided with a slider (23) inside, the two sides of the slider (23) are penetrated by the guide rod (25) and can slide on the guide rod (25), the slider (23) There are lead screw nuts (230) on both sides of the upper and lower sides, the lead screw (21) penetrates the slider (23) and the lead screw nut (230) and is threadedly connected with the lead screw nut (230), located at A piston rod (22) is connected to the bottom of the lower screw nut (230), and the end of the piston rod (22) extends to the outside of the cylinder (20) and is connected to the piston through a fixing plate (24) (10) Fixed. 2. The injection instrument of the hypodermic anticoagulant needle with time-delay function according to claim 1, wherein the transmission box (3) is provided with a large gear (30) and a small gear (31), so that the The large gear (30) and the pinion (31) mesh with each other, the large gear (30) is coaxially and fixedly connected with the top end of the lead screw (21), and the pinion (31) is connected to the motor The output shaft of (4) is coaxially and fixedly connected. 3. The injection instrument of the hypodermic anticoagulant needle with a time delay function according to claim 2, characterized in that: a second fixing plate (7) is fixed on the circumferential outer wall of the needle barrel (1), and the cylinder body The outer circumferential wall of (20) is sleeved with a first fixing plate (6), and the first fixing plate (6) and the second fixing plate (7) are locked and fixed by bolts and nuts. 4. The injection instrument of the hypodermic anticoagulant needle with a time delay function according to claim 3, characterized in that: a motor control circuit is provided on the circuit board of the control box (5), and the motor control circuit is powered by a power supply The line is connected to a three-phase power supply, and the control box (5) is provided with two switches SB2 and SB3, and two contactors KM1 and KM2 connected in series with SB2 and SB3 respectively, and a time is connected in series between KM1 and SB2 Relay KA1, time relay KA2 is connected in series between the KM2 and SB3.

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