JPS58209360A - Automatic syringe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic syringe with two grooved bottoms that ejects an injection solution in conjunction with the rotation of a motor.

As is well known, conventional syringes are of a type that requires a doctor or nurse to manually push out the injection solution, and is used for injections such as budovu sugar, which take a long time, and for intractable diseases that require injections. The injection required a great deal of effort.

In order to eliminate such drawbacks, the present invention has been developed under the supervision of a doctor or nurse to determine the optimal injection conditions, namely, the amount of injection liquid per unit time, the injection time per injection, and the time in the case of intermittent injection. It is said that there are 100,000 people in Japan and several hundred thousand people around the world, and it is an automatic syringe with a motor drive circuit that can realize intervals etc. The aim is also to help patients with incurable diseases.

The feature of the present invention is that the motor, motor behavior circuit, and syringe are all one! Since it is compactly constructed, it can also be stored in a breast pocket.

Hereinafter, it will be specifically explained along with examples.

FIG. 1 shows an embodiment of the present invention, in which 1 is a small motor;
2 is a battery, 3 is a gear box, 4 is a screw, 5 is a lever, 6 is a syringe, 7 is a rubber tube, 8 is a drive circuit, 9 is an outer case 1, and 1o is a print fund.

To operate this, first motor 1 connects battery 2 to 1
1f) is driven, and its rotation is transmitted to the gear box 3, which is then reduced to an appropriate rotational speed and transmitted to the screw 4.

4 has a reverse thread, and the lever 5 is supported by rotation to the first position.
The lever is configured to move at a constant speed "T" to the left when facing the figure. When the lever moves to the left, the injection liquid in the syringe 6 is pushed out and is poured out through 7 needles of the rubber tube. The syringe needle is attached to the syringe so that it can be inserted into the human body.Of course, the syringe needle itself can also be attached to a replacement rubber tube. control.

Each of the above elements is mounted on twin shafts in the exterior case 9, which is made of plastic and is lightweight and durable. In particular, the syringe portion 4+-hafter is designed to allow easy insertion and removal of the syringe. It is also essential for injecting injections and cleaning and disinfecting. A drive circuit 8, a liquid volume setting switch, etc. are set above the print board i10. The drive circuit is small and designed to be an LSI to improve reliability.

FIG. 2 is a drive circuit based on an actual foil example of the present invention. 2
1 is an oscillation frequency dividing circuit, 22 is a motor 1@work signal generation circuit, 26 is a motor, 24 is a motor rotation speed detection sensor, 25 is a motor rotation speed counting circuit, 26 is a liquid 1 setting switch, and 27 is a liquid volume -Several circuits, 2B is a circuit abnormality detection circuit,
29 is an alarm.

The operation of the drive circuit is performed as shown below. The oscillation frequency divider circuit 21 is a reference timing signal generation circuit for generating an intermittent signal, eg, 1 public signal, when an attempt is made to automatically perform an injection every minute, or for generating all timing signals for internal circuits. be. The liquid crystal setting switch 26 is configured so that the amount of liquid to be injected for each intermittent signal can be externally specified by a digital switch.For example, if 5 is given in decimal digits, o-oscc injection can be performed.

The motor rotation speed counting circuit z5 is a circuit that counts the motor rotation speed converted into a digital value.

Liquid volume - Several times 2-7 is a circuit that detects the coincidence of the count values of z5 and 26, and the motor part side signal generation circuit z2, which was activated by the intermittent signal generated in 5.21, If the pair matches, the motor is started and stopped. 23 is a motor, which moves at the same rate as 22. When the motor moves, the lever 5 moves and the injection solution comes out. Motor rotation speed detection sensor 2L.

This circuit digitizes the rotation speed by applying butene to the rotating shaft of the motor z5 to generate a pulse signal. The circuit abnormality detection circuit 28 detects the abnormality of the same eb work.
For example, if an abnormality is detected, such as the motor starting to rotate or the liquid level not matching, the alarm 2 will be activated. This is a thicker fC circuit that sends warnings such as sounding a buzzer.

As explained above, if the movable syringe according to the present invention is used for time-consuming injections such as glucose injections, doctors or nurses will have to concentrate their nerves for a long time to perform injection medicine. This is beneficial because it reduces the total amount of labor and allows mechanical injection medicine to be performed accurately as long as the injection conditions are set correctly.

Furthermore, if the automatic injector according to the present invention is used for patients with intractable diseases who must rely on constant and intermittent injections, for example, a doctor or nurse will not have to administer injections every minute at all times. In both cases, automatic injection is performed according to the injection condition settings! By attaching the device to the patient, medical care will be provided automatically and accurately, reducing the labor of doctors and nurses, as well as the mental and financial burden on the patient. , very informative.

[Brief Description of the Drawings] Fig. 1 shows the structure of an automatic injector according to the invention, and Fig. 2 shows motors 1, small motors 2, lightning, ponds 5, etc. for setting and controlling injection conditions. gear box
4.-Screw 5..-Lever 6.-Syringe 7.-Go J-tube 8.-Transfer 1 circuit 9.-Exterior case 10.--Printed circuit board 21.--Oscillation frequency division bus path 22.-- Motor drive signal generation circuit z3 - Motor Z4 - Motor one rotation speed detection sensor 25 - Moder rotation Eli counting circuit z6 - Liquid volume setting switch 21 - Liquid volume matching circuit 28 - Circuit abnormality detection circuit 29・-Ara-5 or above applicants Suwa Seiko Co., Ltd.

Claims (4)

[Claims] (1) In a syringe equipped with a small motor and a motor drive circuit, the ability to dispense the injection solution in conjunction with the rotation of the motor is defined as a syringe. auto-injector. (2) The auto-injector according to claim 1, wherein the auto-injector is small and portable and can be driven by a lightning pond. (3) In the auto-injector set forth in the preceding paragraph, by intermittently operating the motor, the syringe can be inserted at regular intervals with the syringe meter attached to the human body, as claimed in claim 1. The auto-injector according to item 1. (4) In the automatic injector described in the preceding paragraph, an automatic 0wJ syringe according to claim 1, wherein the needle characteristic is that the amount of injection liquid can be set in one motor operation;