RU2813050C1 - Portable aspirator - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: portable aspirator includes a frame with a power supply and a pump, closed by a housing with a connector and a cup holder placed on it for an aspiration container equipped with a protective device against overfilling. According to the invention, a second pump, a charger board and a lithium iron phosphate battery are introduced. The housing contains a protrusion for fixing the aspirator on the stand and a reel for storing drainage and pneumatic tubes. An antibacterial filter is installed between the outlet fitting of the aspiration container lid and the inlet fitting of the aspirator. The cup holder of the aspiration containers and the coil have a fastening lock. Both pumps are two-chamber diaphragm pumps, located on a frame and have the ability to connect chambers in series and parallel.

EFFECT: increasing the safety and reliability of using the aspirator.

3 cl, 4 dwg

Description

The invention relates to the field of healthcare, namely to medical equipment for removing medicinal and biological fluids, foreign bodies from wounds, upper respiratory tracts, and body cavities of the patient when providing emergency medical care indoors, outdoors, when transporting the patient in ambulances.

Prior Art

An aspirator is known from the prior art (RU 157059 publ. November 20, 2015) containing a vacuum pump connected to a power circuit with a switch, a pressure setter, a receiving container and a pressure regulator, according to the utility model, the pressure regulator is made in the form of an electronic system, which is an electronic regulator pressure, including a multi-position pressure regulator, as well as a pressure sensor, a differential amplifier, a pressure indicator in the receiving tank, a comparator and a relay for turning on/off the vacuum pump, while the multi-position pressure regulator is configured to set the required pressure values, the pressure sensor is configured to generating a signal proportional to the pressure in the receiving tank and is connected through a differential amplifier to a pressure indicator and a comparator connected to a pressure set point and a relay for turning on/off the vacuum pump.

A portable medical aspirator is known from the prior art (RU 2777251 publ. 08/01/2022), which contains an electric motor, a vacuum setter and a vacuum sensor, an indication panel with a power button, an air filter, a container for collecting liquid, a hose and a plastic tip, a control unit, a line connecting an external power source and an autonomous power supply unit. The electric motor is connected to a vacuum pump. The input of the vacuum sensor is connected to the output of the vacuum pump. The control unit includes a serially connected analog-to-digital converter, processor and digital pulse-width converter. The connection line for the external power supply and the autonomous power supply unit are connected in series with the power supply switching unit and the pulse buck-boost voltage converter. The output of the voltage converter is connected to the input of the charging and balancing unit of the autonomous power supply and to the input of the DC motor driver. The charging and balancing unit of the autonomous power supply is connected in series with the autonomous power source. The DC motor driver is connected in series with the motor. Three control outputs of the control unit are connected respectively to the control inputs of the power supply switching unit, the pulse buck-boost voltage converter and the DC motor driver. The analog inputs of the control unit are connected, respectively, to the analog outputs of the vacuum sensor and the vacuum set point. The control unit is connected by bidirectional control lines to the charging and balancing unit of the autonomous power source and the display panel with the power button. An air filter, a container for collecting liquid, a hose and a plastic tip are connected in series to the output of the vacuum pump. It ensures a reduction in the energy consumption of the vacuum pump electric motor during idle moments when a vacuum is not created in the system, the constancy of the operating characteristics of the device when operating from an autonomous power source and when powered by an external DC source when the voltage level of the sources fluctuates, the weight and dimensions of the device are reduced, and modes of continuous and autonomous operation of the device.

Also known from the prior art are medical aspirators (aspirators) OKH-10-YA-FP-01 (http://www.dealmed.ru/otsasyvatel_jelema_n_sp1.html), an aspirator for ambulance EOp SP-01 (https://www. medexinter.ru/operacionnoe-oborudovanie/otsasyvateli-aspiratory/otsasyvatel-hirurgicheskiy-oh-10-ya-fp-01/).

These aspirators have common disadvantages, since when used in transport, a supply voltage of 12V is required; such aspirators have low performance and speed characteristics. Also, the design of the housing in these analogues increases the risk of device failure when used, for example, in ambulances or field hospitals. For autonomous power supply, analogues use Li-ion batteries, which have low fire safety, have a limited resource of charge-discharge cycles and are ineffective at low temperatures.

The essence of the invention

The problem to be solved by the claimed invention is to ensure reliable, efficient and safe operation of the aspirator under various operating conditions, for example in an ambulance and/or at subzero temperatures.

The technical result of the present invention is to increase the safety and reliability of using the aspirator.

The solution to the problem and the technical result are achieved by the fact that a portable aspirator is proposed, which includes a frame frame in which a power supply unit, a charger board, a key connector are located, the frame is closed by a housing with a protrusion for fixing the aspirator on a stand, a cup holder with an aspiration device is located on the housing a container equipped with a protective device against overfilling, a reel for storing drainage and pneumatic tubes, and an antibacterial filter is installed between the outlet fitting of the aspiration container cover and the inlet fitting of the aspirator, while the cup holder of the aspiration container and the reel have a universal fastening lock, two vacuum double-chamber membranes are placed on the frame pump with the possibility of serial and parallel connection of chambers and a lithium iron phosphate battery.

The portable aspirator can be equipped with a carrying handle, an operation indicator, and a battery status indicator.

The suction container can have a volume of 0.25 or 0.5 or 1 liter.

The invention is illustrated by drawings that explain the essence of the technical solution.

Fig . 1 General view of the portable aspirator with the casing removed.

Fig. 2 Portable aspirator side view;

Fig. 3 Portable aspirator with a reel for storing drainage and pneumatic tubes;

Fig. 4 Portable aspirator top view.

In the figures, the following structural elements are indicated by numbers:

1 -Aspirator handle;

2 - Vacuum gauge;

3 - Aspirator fitting;

4 - Switch;

5 - LiFePO4 battery;

6 -Double-chamber diaphragm pump;

7 -Aspiration container with fittings;

8 -Cup holder for aspiration container;

9 - Reel for storing drainage and pneumatic tubes;

10 - 220V connector;

11 -12V power socket;

12 -Socket 6.35 mono.

Carrying out the invention

The portable aspirator consists of a frame frame on which two double-chamber diaphragm pumps are placed, an AC-DC power supply, a lithium iron phosphate battery (LiFePO4), a charger board, a vacuum regulator, a vacuum gauge, a flow meter, a carrying handle, an operation indicator, an indicator battery status, key switch, 220V connector, 12V connector, pedal connector. From the outside, the frame structure is closed by a housing on which is placed a cup holder with an aspiration capacity of 1 l, or 0.5 l, or 0.25 l with an overfill protection device and a reel for storing drainage and pneumatic tubes.

The outlet fitting of the aspiration tank cover is connected through a system of drainage and pneumatic tubes to vacuum pumps. An antibacterial hydrophobic filter is installed between the outlet fitting of the aspiration container lid and the inlet fitting of the aspirator, which cleans the incoming air and prevents moisture from penetrating from the container into the aspirator. The inlet fitting of the aspiration container is connected to the aspiration tip using a drainage tube. When the aspirator is turned on, the vacuum pumps reduce the pressure in the aspiration tank and the suction of liquid and air begins from the area covered by the aspiration tip. The sucked air passes through an antibacterial hydrophobic filter and is released through vacuum pumps into the atmosphere. The sucked liquid is collected in a container. When approximately 4/5 of the volume of the aspiration container is filled, the liquid raises the float of the protective device, the float moves in the guide cylinder and closes the hole in the nozzle of the lid of the aspiration container, pumping stops. The presence of two chambers in the pump makes it possible to improve the characteristics of the aspirator compared to analogues: thus, when the chambers are connected in series, the vacuum pressure increases, and when connected in parallel, the productivity increases. In addition, two pumps provide increased reliability; failure of one pump does not lead to failure of the aspirator.

Vacuum pumps are powered with a voltage of 12 V DC from the built-in AC-DC power supply connected to a 220 V network or from an external 12 V DC source (car electrical network). In the absence of power supply from external sources, the operation of vacuum pumps is ensured by the built-in LiFePO4 battery. This battery has high fire safety, remains operational at low temperatures, has an increased service life of charge-discharge cycles compared to analogues, as well as reduced self-discharge and shorter charging time.

A 12 V DC voltage from an external power source or from a built-in AC-DC power supply connected to a 220 V network is supplied to the brush-commutator assembly of the vacuum pump motor and to the input of the charger board. The charger board (CHB) filters the supply voltage, generates and stabilizes the charging current and voltage of the LiFePO4 battery. The charger board charges the LiFePO4 battery to operating voltage and controls the charge current. When the external power is turned off, the charger board automatically switches the 12 V supply to the brush-collector assembly of the vacuum pump electric motor from the LiFePO4 battery.

A special protrusion is made on the front surface of the invention body, which ensures fixation of the aspirator on a special stand in the ambulance from both longitudinal and transverse movements and from vertical movements during shaking.

The combination of all elements of the proposed solution makes it possible to increase the level of safety and reliability of using the aspirator, which confirms the achievement of the stated technical result.

Claims (3)

1. A portable aspirator, including a frame frame with a power supply and a pump, closed by a housing with a connector and a cup holder placed on it for an aspiration container equipped with a protective device against overflow, characterized in that a second pump, a charger board and lithium iron are inserted into it -phosphate battery, the housing contains a protrusion for fixing the aspirator on a stand and a reel for storing drainage and pneumatic tubes, while an antibacterial filter is installed between the outlet fitting of the aspiration container cover and the inlet fitting of the aspirator, the cup holder of the aspiration containers and the reel have a fastening lock, and both pumps are They are two-chamber diaphragm pumps, placed on a frame and have the ability to connect chambers in series and parallel. 2. The portable aspirator according to claim 1, characterized in that it is equipped with a carrying handle, an operation indicator and a battery status indicator. 3. A portable aspirator according to claim 1, characterized in that the volume of the aspiration container is 0.25 liters, or 0.5, or 1 liter.

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