RU139355U1 - ANESTHETIC INTRODUCTION SYSTEM IN TISSUE WITH NORMALIZATION OF INPUT SPEED - Google Patents

Abstract

1. A system for introducing an anesthetic into tissues with normalization of the input rate, including a medical syringe, characterized in that it contains a nozzle for the syringe, which includes a stepper motor and a control unit consisting of a battery with a voltage converter and a microcontroller with a driver, the output of which is connected to the control winding of the stepper motor, while the stepper motor and the control unit are placed in a glass, which is fixed to the syringe from its back through the latches, and the stepper motor The spruce is selected with a pusher, which is connected with the pressure washer of the syringe, providing translational movement. 2. The system according to claim 1, characterized in that for turning on the system on / off, a micro button is provided located on the side surface of the glass. The system according to claim 1, characterized in that the pusher movement step is set programmatically in the microcontroller at the manufacturer's factory. The system according to claim 1, characterized in that the battery is connected to the voltage converter by a primary bus, and secondary buses are connected to the power of the microcontroller, driver and stepper motor.

Description

The utility model relates to medicine and can be used when injecting, for example, during local anesthesia during various interventions, including dentistry for local injection anesthesia, as well as in general medicine for the administration of solutions requiring control of the rate of administration.

Especially the proposed device can be used for local anesthesia of young children, because allows you to reduce pain at the time of injection.

A big problem all over the world is the reduction of pain with an injection of the body, in particular with local anesthesia. It is known that pain does not occur with a direct injection, but with the introduction of a solution at a high speed.

It is known from the prior art for the introduction of solutions that, for example, during infiltration anesthesia, anesthetics in an amount of 1.5-2.0 ml are administered slowly to avoid severe pain from delamination of tissues with a solution (Bizyaev A.F. et al., “Anesthesia in conditions of the dental clinic ", M, 2002, p. 40).

However, the rate of introduction of the solution into the tissue should in no case exceed 1 ml per min (E. Borovsky and others, “Therapeutic dentistry”, M, JSC “Dentistry”, 2005, p. 14).

At the same time, during the injection into the tissues, the doctor (nurse) is guided only by personal sensation and does not know what pressure develops at the time of injection or what is the speed of the solution (number of ml per unit time), in essence this is “creeping empiricism”.

It is also known that all recommendations for the rate of introduction of the solution are given without taking into account the ratio of the density of the tissue at the injection site, the density of the solution, as well as the pressure and speed of the solution in a local anesthetic.

A device for introducing a solution at a low speed (adjustable) is known, according to the patent of the Russian Federation No. 2342125 (2008, 12.27) "Electronic syringe", which consists of a microcontroller unit with a control indicator, a foot pedal, with which anesthetic, a power source (network) are supplied 220 V, 50 Hz) and a set of disposable systems.

With all its positive qualities, this device has two significant drawbacks: rather cumbersome, and most importantly very expensive (tens of thousands of rubles).

The Sleeper One electronic transcortical anesthesia system with Jntralig-S needles is known, see on JD internet site: www.information-dentaire.com.

The system contains: a computer unit, a unit for setting operating modes with an indication, a power supply unit, a set of needles, foot pedals and a set of cables.

Of course, this is an excellent system, but it is rather cumbersome and very expensive, about several thousand euros.

There is a known electronic device for anesthesia "Anaeject", made in Japan, see on JD internet site: http / www.septodont: fr / menu = 18mode = 38id = 21 - PROTOTYPE.

This device is made in a shape resembling a gun and having approximately the same dimensions.

The device comprises: a housing on which a special disposable syringe is attached (inserted), an on / off button is on the housing, and an electromechanical part is located inside the housing. The electronic part is located on the remote control: it is a microcontroller (MS), the control and display panel (mode settings and their reflection on the LCD), the remote control is connected to the device with a flexible cable, the MS controls the electromechanical part to enter the anesthetic through a syringe (drive). Power is supplied by the built-in battery.

The disadvantages include the availability of specialized syringes, as well as a very high cost. Such a device will find application in specialized dental clinics, but due to its high cost it is not available for all segments of the population and regions of the Russian Federation.

The common disadvantages of the presented models include the fact that they are complex reusable technical devices, and therefore there is a potential risk of infection for patients and staff.

The technical task of the proposed utility model is the stabilization of the rate of injection of the solution (anesthetic) into the tissue at a given level in order to reduce the pain syndrome to almost zero, i.e. improving the convenience of medical staff and patient comfort.

To solve this problem, we propose a system for introducing an anesthetic into tissues with normalization of the injection rate, containing a medical syringe and a nozzle for it, the nozzle contains a micro button for power on / off, a step motor and a control unit consisting of a microcontroller with a driver, the output of which is connected to the control winding stepper motor; structurally, the stepper motor and the control unit are interconnected via a micro-connector and placed in a glass, which is fixed to the syringe from its back through the latches, and the stepper motor is selected with a pusher that is connected to the pressure washer of the syringe, providing translational movement; To enable the system in operation - on / off - a micro button is located on the side of the glass; the pusher movement step is set programmatically in the microcontroller at the manufacturer's factory, and syringes can be produced with different standard sizes of the step; the battery is connected to the voltage converter by a primary bus, and secondary buses are connected to the power of the microcontroller, driver and stepper motor.

The utility model is illustrated by two drawings: figure 1, which shows the constructive nozzle of the system and figure 2, which shows the structural electrical diagram of the system - an electronic unit.

The figures depict:

1 - the body of a medical syringe (reservoir for anesthetic);

2 - a pusher of a washer of a syringe;

3 - the defining part of the pusher pusher;

4 - step electric motor (ШД);

5 - electronic unit (EB);

6 - a glass in which the ШД, ЭБ, the battery and the system on / off button are attached;

7 - latches for fastening the glass to the syringe;

8 - slot for the battery (battery);

9 - micro button on / off system with memory and backlight;

10 - micro connector;

11 - “ears” of the syringe body;

12 - a pressure washer of a pusher of a syringe;

13 - electrodes for charging the battery without removing from the glass;

15 - battery (battery);

16 - voltage converter from the battery to the supply voltage of the MS (= 3V), driver = 3V and = 12V and stepper motor (= 12V);

17 - microcontroller (MS);

18 - driver;

19 - external charger (for battery).

The components of the system can be performed on the following elements: medical syringe 1 - standard disposable, voltage transducer 16 - own production, microcontroller 17 - see

http://www.nxp.com/technical-support/#/tid=50809,tab=usermanuals, stepper motor driver - see

http://www.toshiba.com/taec/components2/Datasheet_Sync/382/27885.pdf. stepper motor with linear actuator (min ⌀20), see

http://www.anaheimautomation.com/products/stepper/stepper-linear-actuators.php?tID=130&pt=t&cID=52,

stepper motor ((min ⌀6), see http://www.micromo.com/stepper-motors-datasheets.aspx

The system constructive has the following connections: the glass 6 is attached to the ears 11 of the syringe body 1 by means of latches (the hinges of the latches are not shown conventionally); inside the glass 6 are placed ШД4, ЭБ5, the structure of which in the socket 8 is a battery 15, ШД4 and ЭБ5 are interconnected via a micro connector 10; the ШД4 pusher (in Fig. 1, it is conditionally in the initial state - not released), but its end is connected to the pressure washer 12, which is rigidly connected to the driver part 3 of the pusher, which is also rigidly connected to the pusher 2 of the syringe washer; On the side of the EB5 is a button on / off 9 of the system.

The electronic unit 5 of the system has the following connections: the battery 15 is connected via an on / off button 9 to a voltage converter 16, the three-volt output of which is connected to the MC17 and driver 18, and the twelve-volt output is connected to the driver 18 and ШД4, the output of the driver 18 is connected to the ШД4 control winding the mechanical output of which is the pusher is connected to the pressure washer 12 of the pusher of the syringe.

The system operates as follows.

Before the injection, the nurse (doctor) collects 1 anesthetic into the syringe body, then removes the construct - the glass 6 from the stand for charging it and connects it to the syringe body 1 by means of latches 7. After connecting the glass 6 to the syringe 1, the nurse inserts the syringe needle into the tissue and then presses button 9 and then, on command MS17, the SD4 starts working, smoothly advancing the pusher of the washer of the syringe 32, thereby anesthetic is injected through the needle of the syringe into the tissue at a given speed for 90 seconds. Then, on the command of the same MS17, the reverse is turned on and the pusher ШД4 returns to its original position within 1.5-2 seconds. Then the nurse using the latches 7 disconnects the glass 6 from the syringe and puts it in the stand to recharge the battery 15. The syringe is ejected. It should be noted that the time of administration of an anesthetic of 90 seconds can vary, for which the construct can be produced in time options: 70-80-90-100 seconds, and max time of 90 seconds is for young children.

The proposed system is simple in design and application, and the cost is in the range of 1,500 rubles, which is 2-4 orders of magnitude lower than all known analogues. The system is reusable and can be used many thousands of times, because according to the calculations, the mean time between failures is То≈20000 hours, and the time of one injection (the operating time of the unit in the on state) is ≈120 sec, compare. Further, the weight of the construct (nozzle) does not exceed 100-120 g, and the weight of all known analogues is within 1 kg or more.

The electronic part of the system (EB) is made entirely on integrated circuits, i.e. quite simple and small-sized. The case (glass) is made of high impact polystyrene, i.e. even when falling (by accident) he is not. cracking, and IC a priori shockproof, like SD.

Also, the printed circuit board with MS, driver and voltage converter is covered with a special varnish UR-231, which protects them from adverse climatic conditions, mainly increased humidity.

In conclusion, it should be noted that the application of the proposed system is especially relevant in rural hospitals, small towns, not to mention large medical centers.

Claims (4)

1. A system for introducing an anesthetic into tissues with normalization of the input rate, including a medical syringe, characterized in that it contains a nozzle for the syringe, which includes a stepper motor and a control unit consisting of a battery with a voltage converter and a microcontroller with a driver, the output of which is connected to the control winding of the stepper motor, while the stepper motor and the control unit are placed in a glass, which is fixed to the syringe from its back through the latches, and the stepper motor The spruce is selected with a pusher, which is connected with the pressure washer of the syringe, providing translational movement. 2. The system according to claim 1, characterized in that to enable the system in operation - on / off - provides a micro button located on the side surface of the glass. 3. The system according to claim 1, characterized in that the pusher movement step is set programmatically in the microcontroller at the manufacturer's factory. 4. The system according to claim 1, characterized in that the battery is connected to the voltage converter by a primary bus, and secondary buses are connected to the power of the microcontroller, driver and stepper motor.

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