RU218455U1 - DEVICE FOR TREATMENT WITH VACUUM AND CONSTANT VACUUM - Google Patents

Abstract

The utility model relates to the field of medicine and to devices for treating the wounded and patients with wounds of various origins, and is used to remove air, blood, exudate and other substances from the pleural cavity and wound discharge from a given area of therapy according to indications. The device contains a housing in which a screen is placed that displays information about the current mode of operation, the state of charge of the battery, the presence of errors in the operation of the device, as well as the device control buttons (on/off and selection of the operating mode), two tubes come out of the housing, one of which is intended for for suction of the gas-air medium into the pump, the second - for its discharge outside the housing, a pump (or compressor) of a given capacity, a control board for the device, a sensor for measuring the pressure of the gas-air medium in the suction tube, a humidity sensor, a relief valve, and an accumulator are mounted inside the housing. The technical result is achieved due to the vacuum value created in the suction tube at a user-specified interval by means of the operation of the pump (compressor), which is controlled by the control board based on the readings of the pressure sensor, the relief valve in the device serves to ensure the operation of the device in the variable pressure mode, i.e. . in the mode "reaching the upper set pressure - exposure - reaching the lower set pressure", the battery allows you to ensure the operation of the device both in stand-alone mode and during charging from the AC mains. 1 ill.

Description

The utility model relates to the field of medicine, namely to devices for treating the wounded and patients with wounds of various origins, used to remove air, blood, exudate and other substances from the pleural cavity and wound discharge from a given area of therapy according to indications.

A device for vacuum drainage of wounds is known, made with the possibility of location in the wound and hermetic closure with a covering material, consisting of a porous sponge with a vacuum wire inserted into its thickness using a trocar for its entire length [RU 183866 U1, IPC A61M 1/00 (2006.01 ), publ. 10/05/2018].

A disadvantage of the known device is the impossibility of treating wounds of various origins (purulent, thoracic, etc.) using constant and variable vacuum in a wide range of pressure changes, as well as large dimensions and inability of the device to work in the field, as well as in civil defense and emergency situations.

A device for the treatment of infected and purulent wounds is known, containing a fine-mesh sponge applied to the wound surface, a film for isolating and sealing the surgical field, a drainage system equipped with a tube, one end of which is connected to the sealed cavity of the surgical field, and the other to a container for collecting the discharged exudate , connected to a vacuum pump equipped with an electric drive, a bactericidal air filter [RU 131622 U1, IPC A61M 1/00, A61M 27/00, publ. 2022]. The device is equipped with a vacuum sensor, a microprocessor, an analog-to-digital converter, an element for reducing noise interference of a vacuum sensor and an audible buzzer, while the input of the vacuum sensor through a capillary tube is connected to a vacuum pump, the output of the vacuum sensor through an amplifier is electrically connected to the element for reducing noise interference of a vacuum sensor, the output of which is connected to the input of an analog-to-digital converter, the output of which is connected to the input of the microprocessor, the outputs of which are respectively connected to the electric drive of the vacuum pump, with an audible buzzer and a display. The device solves the problem of increasing the accuracy of maintaining the specified value of vacuum in the area of the wound field, reducing the duration of treatment, reducing the size and weight of the device.

The disadvantages of the known device include the fact that the device is intended for the treatment of purulent wounds, that is, it pumps out liquid, while the claimed device pumps out both liquid and gaseous medium (treatment of pneumothorax), in addition, the treatment of purulent wounds and treatment of pneumothorax requires a different amount of vacuum created, which does not allow the use of a device for the treatment of purulent wounds in the treatment of pneumothorax.

When creating a utility model, a technical problem is solved, which consists in expanding the arsenal of technical means by developing a device for treatment with variable and constant vacuum with the ability to set a constant or variable vacuum value (with a specified holding interval at the upper and lower specified limits of the vacuum value) nature, its maintenance within a given time interval without the participation of the patient and medical personnel, the technical characteristics of the device allow the treatment of both thoracic and purulent wounds due to a wide range of vacuum created and accurate measurement of its value in the suction tube. Due to the wide range of generated pressure, the device is a universal source of vacuum for the treatment of a wide range of diseases with the proper combination of the required equipment (tubes, containers, sponges, needles for the treatment of pneumothorax, etc.).

The technical result, which consists in the implementation of the specified purpose, is achieved by the fact that the device contains a housing equipped with a screen displaying information about the current mode of operation, the state of charge of the battery, the presence of a display of errors in the operation of the device, as well as control buttons (on/off, selection of the operating mode, setting the pressure (vacuum) value Two tubes come out of the housing, one of which is designed to suck the gas-air medium into the pump, with an optionally installed humidity sensor, which signals the ingress of biological fluids into the pump (compressor) and the need for its subsequent disinfection. gas-air medium, the pump is configured to connect the required sealed medical equipment, selected depending on the treatment of the target disease and / or pathological process, for example, a tube - an intermediate container - a sponge for a purulent wound. patient therapy. The second tube coming out of the device is designed to discharge the sucked gas-air medium. A pump (compressor) of a given capacity is mounted inside the case, the operating mode of which allows treating a wide range of diseases with a vacuum of a constant and variable nature, a device control board, control buttons designed to select and set the parameters of the desired therapy mode, a gas-air pressure sensor connected to a tube for suction of the gaseous medium and a pump, according to the readings of which the therapy mode is set, a humidity sensor that signals the ingress of a liquid medium into the device (in the event of this event, the device must be disinfected), a relief valve connected to the tubes, which allows the impact of variable vacuum values on patient therapy area due to cyclic discharge of excess vacuum, a power battery of a given capacity, allowing the device to be used in continuous operation, both in stationary and military field conditions.

The technical result is achieved due to the vacuum value created in the user-defined interval in the tube for suction of the gas-air medium by means of the operation of the pump (compressor), which is controlled by the control board based on the readings of the gas-air medium pressure sensor. The relief valve in the device is used to ensure operation in the variable pressure mode, that is, in the mode “reaching the upper set pressure - holding - reaching the lower set pressure”, the power battery allows the device to operate both in stand-alone mode and while charging from the AC mains. current. The vacuum created by the device in the tube through the system of communicating vessels affects the area of therapy, which can be any of the known ones, for which the negative pressure system is used, for example: treatment of pneumothorax, treatment of purulent wounds, treatment of lung disease, treatment of burns, ulcers, bed sores and so on. Vacuum can affect the patient through well-known structures while maintaining the tightness of the "device-patient" path, for example, the design: device - tube - intermediate container - tube - pneumothorax needle - pleural cavity.

The figure schematically shows the arrangement of the elements of the device.

The device contains a housing 1 with a screen 2 for input-output of information, displaying information about the current mode of operation, the state of charge of the battery, the presence of errors in the operation of the device, as well as control buttons 4, provided with the necessary information labels. Inside the housing 1, a pump (or compressor) of a given capacity 3, a power battery 5, a control board 6, a relief valve 7, a gas-air pressure sensor 8, and an (optional) humidity sensor 9 are mounted.

The control board 6 contains a controller with built-in appropriate software that controls the device with the ability to implement the specified functions.

A tube for suction of the gas-air medium 10 goes out of the housing 1 into the pump 3 and a tube for the discharge of the gas-air medium 11. The pressure sensor 8 is connected to the indicated tubes and the pump 3. The relief valve 7 is connected to the pump 3 and the tube for the suction of the gas-air medium 10.

Screen 2, pump 3, control buttons 4, power battery 5, control board 6, relief valve 7, pressure sensors 8, humidity 9, respectively, are connected electrically (by wire).

A protective screen can be mounted on the device to prevent spontaneous pressing of the buttons during operation.

Four control buttons 4 are designed to implement the following functions:

power on / off button - is responsible for turning the device on and off by pressing;

button for selecting the operating mode of the device - to select one of the 3 operating modes by successive pressing;

two buttons for adjusting the value of the pressure (vacuum) created by the device. The pressure is created by successively pressing the button (one button increases the value, the other decreases). After pressing the button, the pressure value changes on screen 2 up or down (depending on which button is pressed) by a pre-set step of the pressure value specified by the software. Pressing the above buttons changes the holding time of a constant pressure in the variable pressure mode, as well as the selection of items in the control menu of the device.

The selected operating mode of the device is displayed on screen 2.

By pressing the button for selecting the operating mode of the device, the following functions are performed: confirmation of the selected parameters of the device operation, selection of positions in the control menu of the device.

The specified pressure in the device is created and maintained due to the pressure created by the pump (compressor) 3, sealed tubes 10, 11 connected to it, installed inside the housing 1 of the pressure sensor device 8, which constantly measures the pressure value in the tubes and, if it deviates from the set value, sends a signal to the control board 6, in which the embedded control program reads the deviation of the current pressure value from the set one and gives the command to turn on the pump 3 and operate it until the set pressure is reached.

The device has three modes of operation:

1.V-V. Mode of operation with constant negative pressure (vacuum) for the treatment of purulent wounds. The mode is used to remove wound discharge (exudate, pus) from a given area of therapy.

The required vacuum value is set from 0 to 300 mbar in the working path - the tube for suction of the gas-air medium 10 in the range of operating modes of the device by pressing the control buttons 4. Then the device maintains the set pressure by continuous monitoring using a pressure sensor 8 of the gas-air medium and, if necessary ( change in pressure from the one set by the user), turning on the pump (compressor) 3. The set pressure, as well as the parameters of the device, are displayed on screen 2.

2.P-T. Operating mode with constant negative pressure (vacuum) for pneumothorax. The mode is used to remove air, blood, exudate and other pathological contents of the pleural cavity.

Any required vacuum value is set from 0 to 30 mbar in the working path - a tube for suction of the gas-air medium 10 in the range of operating modes of the device by pressing the control buttons 4. Then the device maintains the set pressure by continuous monitoring using a pressure sensor 8 of the gas-air medium and, if necessary (pressure change from the one set by the user), turning on the pump (compressor) 3, the set pressure, as well as the operating parameters of the device are displayed on screen 2.

3.V-C. Operating mode with variable negative pressure (vacuum). It is characterized by the fact that the difference in the required pressure value is set at its upper and lower points, as well as the holding time when each of the specified pressure values is reached in the working path - the tube for suction of the gas-air medium 10 in the range of operating modes of the device by pressing the control buttons 4. Next, the device maintains the set pressure values by continuous monitoring using a pressure sensor 8 and, if necessary (change in pressure from the user set one), turning on the pump (compressor) 3. The set pressure value, as well as the device operation parameters are displayed on the screen is that during the transition from a higher pressure to a lower one, the excess gas-air medium is discharged through the relief valve 7 into the tube for the discharge of the gas-air medium 11.

An example of using the device in the treatment of a purulent wound.

To treat a wound in a constant pressure (vacuum) mode, select the appropriate mode using the control buttons 4. Then, using the buttons for setting the pressure, the required values of the change in the readings of the parameters of the negative pressure are set. For superficially located wounds, the recommended parameters are 60-80 mm Hg, for deeply located wounds, wounds with poorly drained pockets, the recommended parameters are 110-160 mm Hg. The device readings are displayed in mbar on screen 2. The choice of the device operation mode and pressure depends on the severity of the disease and the period of its treatment.

To treat a wound in the mode of alternating pressure (vacuum), the corresponding mode is selected using the control buttons. The following algorithm of pressure (vacuum) parameters is set: the maximum vacuum in the value is 120 mm Hg. for 5 minutes, then negative pressure in the value - 80 mm Hg. within 3 minutes. This mode of operation is cyclical. If other negative pressure values and time phases of exposure are required, the required negative pressure values are set through the control menu using the pressure value setting buttons with the possibility of saving these parameters in the device’s memory. The choice of operating mode of the device and pressure depends on the severity of the disease and the period of its treatment.

An example of using the device in the treatment of pneumothorax:

To treat a wound in a constant pressure (vacuum) mode, select the appropriate mode using the control buttons. Then, using the control buttons, set the required negative pressure values. For the treatment of thoracic diseases, as a rule, pressure (vacuum) values are used in the range of 3-22 mm Hg. The choice of operating mode of the device and pressure depends on the severity of the disease and the period of its treatment.

Due to the compactness and unpretentiousness of the device, it can be used in combat operations, emergencies, when transporting patients (wounded, injured), in the emergency department, etc., while providing easy access to change the operating modes of the device and setting the required parameters.

Claims (1)

A device for vacuum wound therapy, characterized in that it contains a housing with a screen, on the outer side of the housing there are control buttons for selecting the mode and parameters of vacuum wound treatment, inside the housing there are a pump, a control board with a controller, a gas-air pressure sensor, a humidity sensor, a discharge valve, power accumulator, two tubes come out of the housing, one of which is designed to suck the gas-air medium into the pump, the other to discharge the gas-air medium, the humidity sensor is configured to signal the ingress of biological fluids into the pump and the need for its subsequent disinfection, the tube for suction of gas-air environment into the pump is configured to connect sealed medical equipment, the pressure sensor of the gas-air environment is connected to the tube for suction of the gas-air environment and the pump, and the relief valve is connected to two tubes and is configured to effect variable vacuum values on the patient's therapy area, in addition, the device made with the ability to work in three modes of operation, in the first mode of operation - with a constant negative pressure for the treatment of purulent wounds, in the second mode of operation - with a constant negative pressure for pneumothorax, and in the third mode of operation - with a variable negative pressure, in which, by pressing the control buttons, the difference in the required pressure value at its upper and lower points, as well as the holding time when each of the set pressure values \u200b\u200bis reached in the tube for suction of the gas-air medium.

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