The ventilator

 

The invention relates to medical equipment, namely, devices for artificial lung ventilation (ALV), and will find application in the departments of surgery, anesthesiology and intensive care. The ventilator has a control unit, respiratory unit, hoses and exhalation, United tee of the patient, the dispenser gas mixtures, a breathing bag, a suction valve and a relief valve. The control unit includes a motor, kinematically associated with the transfer of "screw-nut", the generator pneumatic pulses, pneumatically connected to the exhalation valve of the respiratory unit, and a pressure transducer pneumatically coupled with line of breath respiratory unit. The generator is designed as a valve with the rod resting on the electromagnet core and located in fixed to the solenoid housing. In the cover 22 of the casing is hermetically installed membrane with a rigid center nozzle. The technical result consists in ensuring the stability of parameters of mechanical ventilation. 3 Il.

The invention relates to medical equipment, namely, devices for artificial lung ventilation (ALV), and will find application in the departments of surgery, block containing a series of high pressure with the pressure regulator, injector, regulator, gas flow and pressure switches, block the fur regulator of respiratory volumes and limit switch injector, a pressure transducer, pneumomechanical. breathing circuit and the control unit.

However, for this ventilator characterized by significant shortcomings that limit its use in General medical practice. Thus, in particular, moving the dividing fur is medical gas (oxygen or air) supplied from the pneumatic actuator system. In addition, pneumomechanical serving in a pneumatic apparatus for switching gas flows during operation also uses a compressed medical gas, which complicates the design of the device, reducing overall performance.

Also known ventilator comprising apparatus inhalation narcosis "Fabius" firm "DRGER, Germany, containing the control unit with motor and pressure transducer pneumatically connected with the tee of the patient; respiratory unit, comprising an elastic separating tank connected by a screw-and-nut with an electric motor, line and exhalation of the patient, pneumatically span, set on the line of the exhalation of the patient.

However, this ventilator has significant drawbacks. So, in each respiratory cycle closing diaphragm valve exhalation in the act of inhaling carried out by the pneumatic signal from the control unit. This signal continuously during the entire period of operation of the apparatus is formed by a special blower and is switched by the system pnevmoelektropreobrazovatelya to the beat of respiratory cycles, acting on diaphragm exhalation valve or sbrasyvaesh into the atmosphere. The use of blower complicates the design of the device and reduces its reliability and performance.

The present invention solves the problem of extending the functionality of the ventilator and improve the efficiency of its application in medical practice due to the introduction of the pneumatic generator pulses used to control the exhalation valve in each respiratory cycle. This solved the problem of the new design implementation generator eliminates the flow of compressed gas to control the apparatus to further simplify its design and improve performance.

Problem solving is achieved by the fact that so on the tee of a patient; respiratory unit, comprising dividing the fur, which is connected through the transmission of "screw-nut" with electric lines and exhalation of the patient connected to the patient y-piece, and the line of the breath is pneumatically connected with the separation fur, check valve, installed in the inspiration line and diaphragm controlled valves that are installed on the lines of the inhalation and exhalation of the patient, and the power supply of breathing mixture comprising dosing the gas mixture, the inlet of which is pneumatically connected with a source of compressed medical gases, and out - breathing bag, a safety valve and valve suction of atmospheric air, and with the separation fur through the check valve; according to the present invention is equipped with a generator pneumatic pulses set in the control unit and is designed as a convex membrane with a Central nozzle and valve, kinematically connected with the armature of the electromagnet, and the internal cavity of the membrane is pneumatically connected with a controlled valve on the line of the exhalation of the patient.

Thus, the essence of the present invention is that due to the proposed design solutions are expanding the functionality of the ventilator, increase effectivesion pneumatic pulses, that allows you to control the exhalation valve without the use of compressed gas or a source of constant pressure, and also has a completely new design solution generator pneumatic pulses driven by an electromagnet, which simplifies the design of this site, eliminates the gas flow control apparatus and increases its reliability. Used in the apparatus of the technical solutions made it possible to improve the constructive implementation of its units, to improve the reliability and ease of use, and to significantly expand the scope of its application in medical practice.

Summary of the invention illustrated a specific example of implementation of the apparatus and drawings, on which: Fig.1 - schematic pneumatic diagram of the proposed apparatus; Fig.2 - structural diagram of the pneumatic generator pulses, Fig.3 - enlarged block-diagram of the algorithm of work of the device.

The ventilator (Fig.1) has the unit 1 control, respiratory unit 2 hoses breath 3 and exhalation, 4, United-tee 5 of the patient, the dispenser 6 gas mixtures, a breathing bag 7, the valve 8 of the suction and pressure relief valve 9.

The unit 1 control handle electrically is lgorithm operation of the apparatus shown in Fig.3) using the software unit (controller) (Fig.1 is not shown). Software unit (controller) is based on microcontroller ATMEL AT90mega 128-16AC (see the technical documentation of the applicant ATHENS. 467459.005 E3 effects).

Block 1 contains a control motor 10, kinematically associated with the transfer 11 "screw-nut", the generator 12 pneumatic pulses, pneumatically connected to the valve 17 exhalation respiratory unit 2 and the inverter 13 pressure, pneumatically connected to a line of breath respiratory unit 2.

Managed the motor 10 is designed to ensure through the transmission 11 "screw-nut" reciprocating movement (on the set) rolling base separation fur 14 in the respiratory unit 2 and can be made in the form of motor RBE-90 TAIK.521179.006 TU.

The generator 12 pneumatic pulse is designed to generate in each respiratory cycle of the pneumatic pulse pressure, ensuring the closing of the valve 16 exhalation, for example, in the act of inhalation of the patient.

The generator 12 (Fig.2) made in the form of valve 18 with the rod resting on the core 19 of the electromagnet 20 and located in fixed to the electromagnet 20 case 21. In the cover 22 of the casing is hermetically installed elastic sleeve membrane 23 with ill the exhalation respiratory unit, and podobrannaya cavity - output batcher 6 gas mixtures.

The unit 1 control also contains a sensor 13 pressure, convert the pressure in the breathing circuit into an electrical signal used to control the operation of the apparatus and to signal when the pressure drops below an acceptable level. The sensor 13 pressure is pneumatically connected to the line of breath respiratory block and can be made in the form of transducer overpressure MPX5010DP (MOTOROLA).

Respiratory unit 2 provides in each breathing cycle of the patient accumulation of a predetermined volume of breathing mixture, as well as the circulation of fresh breathing gas and exhaled gas. Block 2 contains elastic bellows (separation fur) 14, the inner cavity of which is pneumatically connected to the inlet valve 15 breaths, the output of which is connected to the hose 3 breath, and through the check valve 16 with the outlet spout 6 gas mixtures; and a controlled valve 17 exhalation, the entrance of which is pneumatically connected to the exhalation hose 4 and the output with the atmosphere. Operated valve 17 is designed for leak-overlapping lines of exhalation in the act of inhalation of the patient, and at the end of exhalation when working in the mode of creating the regulated pressure in the patient's lungs and the real is emotionsi connected with the output of the generator 12 pneumatic pulses.

The dispenser 6 gas mixtures provides for the formation of a breathing gas with a given physician concentration of medical gas components and supply formed mixture to the breathing circuit apparatus with a bulk velocity that corresponds to the selected parameters of mechanical ventilation. The dispenser can be implemented by drawing the applicant to.180.024.

A breathing bag 7 is intended for accumulation coming from the spout 6 of the breathing gas and may also be used during mechanical ventilation manually.

The suction valve 8 provides the entrainment of atmospheric air to the breathing circuit apparatus in case of exceeding the selected physician values of minute ventilation of the patient of the feed rate of the mixture from the dispenser 6.

The safety valve 9 provides an escape of excess gas into the atmosphere in excess of a predetermined pressure level in the breathing bag 7.

The ventilator operates as follows.

When compressed medical gas to the inlet of the dispenser 6 breathing mixture selected by the operator with a given composition and bulk velocity from the output of the metering device 6 enters the breathing bag 7, filling it up to the pressure defined by the pressure relief valve 9. After the supply voltage electric network to blow 11 "screw-nut", stretches fur and moves the movable base fur 14 at the lower end position determined by the actuation of limit switch (Fig.1 is not shown). In this position, the program stops the engine 10. Under the influence of dilution that occurs in the bottle 14 when stretching, breathing mixture from the bag 7 through the check valve 16 fills the interior space 14 fur.

After joining tee 5 to the airway of the patient and pressing the start button (Fig. 1 not shown) by a signal from block 1 is the generator 12 pneumatic pulses. Thus the voltage applied to the coil of an electromagnet 20 (Fig.2) causes the movement of its core 19 with the valve 18 in its extreme upper position. Moving, the valve 18 is hermetically closes the nozzle rigid center 24 of the membrane 23, moving it up. In the resulting closed namebrands cavity, closed by a cover 22, reduced internal volume and there is excess pressure. Under the action of this pressure diaphragm controlled valve 17 exhalation in breathing unit 2 is hermetically closes the line exhalation of the patient. At the same time in accordance with the operator parameters of mechanical ventilation, such as breathing on the characteristics of the transmission 11 "screw-nut") parameters of rotation of the motor 10, which is reversed in accordance with this calculation compresses fur, forcing the breathing mixture through the valve 15 of breath and hose 3 inhalation into the lungs of the patient.

Is the act of inhalation. This self-acting check valve 16 at the outlet of the dispenser 6 is closed.

At the end of inspiratory time begins the act of passive exhalation of the patient. When the motor 10 is reversed, returning the movable base fur 14 to its original position and sucks the inside fur fresh breathing mixture from the bag 7. Simultaneously, the generator 12 pneumatic pulse turns off the electromagnet 20 (Fig. 2), the core 19 with valve 18 under the action of its own weight drops, opening the nozzle rigid center 24 of the membrane 23 and reporting namebrand cavity generator 12 and its associated diaphragm valve cavity 17 of exhalation with the release of the dispenser 6 (line low pressure). Under the action of pressure in the lungs of the patient valve 17 opens and exhale gas from the patient's lungs through tee 5, the exhalation hose 4 and the valve 17 opens into the atmosphere.

The time of expiration is determined by a set physician relative breath (the ratio of inspiratory time to time of the respiratory cycle). The value of this program forms unit justices who/p> The pressure in the act of inhalation is measured using a transducer 13 pressure signal which is processed in the unit 1 control for indicating the magnitude of the pressure signal when it falls below an acceptable level. In addition, to work in the mode of mechanical ventilation with positive pressure end expiratory (peep), the program uses the signal from the transducer 13 pressure to control switching on of the generator pneumatic pulse when reaching the lungs in the act of exhalation setpoint peep.

For mode IVL manually the motor 10 is stopped by pressing the trigger button, the doctor sets on the safety valve 9, the pressure level in the bag 7 and as the filling of breathing mixture bag 7, pressing the bag 7, displaces the gas in the lungs of a patient through the valve 15 and the hose 3 breaths.

Installing a second generator 12 and the controlled valve similar to the valve 17, the line of the breath allows for mode a ventilator to significantly increase the sensitivity to the attempt of the inhalation of the patient. In this operating mode, the apparatus performs the act of breath at the moment of the emergence of independent attempts breath of the patient, hence the inclusion of the second generator 12 pneumatic pulse at the beginning of act CI breath by blocking the second controllable valve 17 internal volume of 14 fur. This allows you to apply a specified mode of operation in patients of different age, extending the functionality of the device and its scope.

Thus, the developed ventilator features: - high performance by eliminating the use of compressed gas to drive and control the work; - enhanced functionality due to the introduction of the pneumatic generator pulses used to control the exhalation valve in each respiratory cycle. The new design implementation generator simplifies the design of the device and improves the reliability and efficiency of its application in medical practice; - simplicity, ease of maintenance and the availability of fully collapsible breathing circuit, which allows high-quality sanitary processing elements.

Claims

The ventilator containing the control unit with electric and pressure transducer pneumatically connected with the tee of the patient, respiratory unit, comprising dividing the fur, which is connected through the transmission of "screw-nut" with electric lines and exhalation of the patient, soy is plant in the inspiration line and diaphragm controlled valves, installed on the lines of the inhalation and exhalation of the patient, and the power supply of breathing mixture comprising dosing the gas mixture, the inlet of which is pneumatically connected with a source of compressed medical gases, and out - breathing bag, a safety valve and valve suction of atmospheric air, and also with the separation fur through the check valve, wherein the apparatus has a pneumatic generator of pulses set in the control unit and is designed as a membrane with a Central nozzle and valve, kinematically connected with the armature of an electromagnet, this namebrand cavity generator pneumatic pulse is pneumatically connected with a controlled valve on the line of the exhalation of the patient, and podobrannaya cavity - output batcher gas mixtures.

 

Same patents:

The invention relates to medical equipment, namely to methods of artificial controlled or assisted ventilation (ALV), and can be used in the process of intensive care clinical hospitals and medical research institutions, can also be used in neonatology for respiratory support

The invention relates to medicine, namely to devices active compression-decompression of the chest during resuscitation

The invention relates to medicine and is intended to improve the functions of circulation and respiration in patients with a decrease in these functions in the various branches of the profile, and can also be used for the resuscitation of

The invention relates to medicine and is designed to regulate the flow of gas to the patient, and the flow is adjusted to maintain a physiological process, such as an effective respiratory function and/or lack of revivals

The invention relates to medicine and can be used for the correction of cardio-respiratory status, including non-specific lung disease

The ventilator // 2174386
The invention relates to the field of medical equipment and can be used in intensive care and resuscitation, as well as in specialized respiratory rooms for non-medicamental treatment of patients with chronic non-specific lung diseases

The invention relates to medical equipment, namely, devices, high-frequency ventilation, designed for intensive care, anesthesiology and critical care medicine

The invention relates to medical engineering, in particular to medical devices and health-improving practices and can be used for respiratory training for the prevention and treatment of diseases associated with the occurrence of hyperventilation of the lungs, and increase the adaptive capacities of the organism

The ventilator // 2155021
The invention relates to medical equipment, namely, devices for artificial lung ventilation (ALV), and will find application in conditions of emergency, emergency medicine, anesthesiology, resuscitation and intensive care when replacing temporarily lost the ventilation function of the body

FIELD: medical engineering.

SUBSTANCE: device has flow generator, compressed oxygen source, gas distribution device, patient T-branch, control system having microprocessor controller connected to the gas distribution device with all its outlets, flow velocity and upper airway pressure sensors pneumatically connected to the patient T-branch. The device has unit containing arterial blood pressure sensor, heart beat rate sensor, sensor of hemoglobin saturation with oxygen, electric output terminals of which form data bus with those of flow velocity and upper airway pressure sensors. The control system is additionally provided with fuzzy controller and three memory units having their inputs connected via electrical link to fuzzy controller output and their outputs to microprocessor controller input, to data bus output and fuzzy controller input connected to PC with its input.

EFFECT: enhanced effectiveness of treatment; accelerated transition to natural breathing.

2 dwg

FIELD: medical engineering.

SUBSTANCE: device has oxygen inhalation sets and artificial lung ventilation means enclosed into dust- and moisture-proof envelopes usable as oxygen-delivery unit. Portable thermochemical oxygen-producing units are connected to the means. Every thermochemical oxygen-producing unit is cylindrical and has casing and cover which flanges are connected to each other via sealing ring by means of removable yoke. The casing has three metal cups inserted one into another and fixed in upper part in the flange. Reactor cartridge provided with hard oxygen-containing composition for setting starter device having striking mechanism is placed in the internal cup. The external cup is perforated and serves as protection casing. Oxygen production unit cover is divided into two parts one of which has safety valve connected to the first output of the reactor cartridge, dust collection filter connected to the second reactor cartridge output on one side and connected to additional cleaning filter via heat exchange unit on the other side, heat exchanger, gas connection nipples, guide member usable in striking mechanism, safety valve and dust collection filter are fixed on cover flange. Additional cleaning filter body is placed on the second part of oxygen production unit cover. Cavity for letting striking mechanism guide pass is arranged along central axis of the additional cleaning filter body. Nipple for releasing oxygen is available on the additional cleaning filter body cover. The nipple has captive nut for making connection to feeding pipe. Starter unit is fixed on the oxygen-producing unit cover and has capsule. The striking mechanism has striker and spring arranged in guiding tube. Air-convection heat exchange unit has coiled pipe manufactured from copper tube. Reflexogenic therapy instrument is available for making anesthesia of wounded person.

EFFECT: enhanced effectiveness of complex treatment with delivering oxygen anesthesia.

2 cl, 4 dwg

FIELD: medicine.

SUBSTANCE: method involves applying auxiliary non-invasive lung ventilation with air-and-oxygen mixture in PSV mode with supporting pressure being equal to 8-12 cm of water column at inspiration phase, FiO2 0.25-0.3, positive pressure at expiration phase end equal to 2-4 cm of water column being applied. Inspiration trigger sensitivity being equal to 15-2 cm of water column relative to positive pressure at expiration phase end level to reach tidal respiratory volume not less than 6-7 ml/kg under SpO2 and blood gases control.

EFFECT: prevented acute respiratory insufficiency; improved alveolar ventilation; reduced venous bypass.

FIELD: medicine.

SUBSTANCE: method involves applying dosed load to cardiac respiration system due to compressed gas working pressure being reduced by 0.4 kg/m2 keeping it constant during 5-20 min. Then, the working pressure is reduced depending on patient state starting with a rate of 0.02-0.08 kg/m2/min. Gas exchange and hemodynamic parameters being in norm, the selected rate is increased. The parameters deviating from a norm, the selected rate is adjusted by increasing working pressure to reach their normal values. Optimum gas flow rate is determined and the working pressure is reduced at this rate, continuing to adjust its value under unchanged gas exchange and hemodynamic parameter values or their deviation from norm.

EFFECT: accelerated treatment course.

2 cl

FIELD: medicine; artificial respiration apparatuses.

SUBSTANCE: apparatus has support, actuating mechanism and drive. Support is made in form of frame provided with rigid wheels, four bosses provided hole and placed in pairs in opposite and symmetrically to longitudinal axis extendable bed onto solid rollers; bed is provided with head support and lock. Actuating mechanism is mounted onto top part of frame and has four guides having smooth part inserted into hole of bosses, four elastic elements put onto smooth parts of guides, breast cuff placed among guides, arm with ears which has bushings to be housed onto threaded part of guides, working tool placed above breast cuff. Working tool is made of disc provided with axis which has ends to be embedded into rollers of ears of the arm. Apparatus also has aid for influencing breast cuff which aid is fixed onto disc for movement relatively the axis. Breast cuff has elastic sheet made in form of rectangle provided with bushings at the angles, solid plank fastened in the middle of the sheet, two cords which have first ends to fasten to opposite side faces. Drive has electric motor, redactor provided with speed gear-box, coupling and chain gear with bridle. Elastic elements are made in form of coil cylindrical or conical springs. Aid for influencing breast cuff has Π-shaped groove in the middle and slot at side surfaces. Slot has length determined by ratio of Λ=2D, where Λ is length of slot and D is diameter of disc. Width of slot allows moving axes and screws inside it.

EFFECT: simplified kinematical design of apparatus.

11 dwg

FIELD: medicine.

SUBSTANCE: method involves setting respirator operation parameter values taking into account height h, age a and patient body mass m; proper value of thoracic pulmonary extensibility Cprop is determined with patient body mass taken into account. Positive pressure at the end of expiration as forced ventilation characteristic with thoracic pulmonary extensibility taken into account. Then, forced volume-controlled artificial pulmonary ventilation is carried out. Breathing frequency and inhaled volume are adjusted to achieve normal lung ventilation followed by auxiliary lung ventilation.

EFFECT: reduced negative influence upon lungs, systemic and cerebral hemodynamic characteristics; retained pulmonary gas exchange.

4 cl, 3 dwg

FIELD: medicine.

SUBSTANCE: method involves introducing catheter via nasal passage into the rhinopharynx and fixed above the entrance to larynx and artificial high frequency jet ventilation is carried out with frequency of 140-150 cycles per min in three stages. Compressed gas working pressure is increased at the first stage to 2.0-2.5 kg of force/cm2 during 7-10 min. The compressed gas working pressure is supported at this level to the moment the clinic manifestations of pulmonary edema being removed and gas exchange normalization being achieved at the second stage. The working pressure is stepwise dropped during 1-2 h at the third stage hold during 10-15 min at each step.

EFFECT: enhanced effectiveness in normalizing hemodynamics.

FIELD: medicine, pediatrics, anesthesiology.

SUBSTANCE: at induction of general anesthesia one should conduct traditional two-lung ventilation at the mode of positive pressure at the end of expiration, on visualizing pleural cavity one should change for high-frequency pulmonary ventilation at respiration frequency being 130-150 cycles/min, respiratory volume of 3-6 l, the ratio of inhalation to expiration being 1:1 and fractional content of oxygen being 0.7-0.8. During performing the stage requiring lung's stillness it is necessary to conduct artificial ventilation in counter-lateral lung at the mode of positive pressure being at the end of expiration, on finishing that stage one should start high-frequency artificial ventilation; operation should be finished with traditional two-lung ventilation. The innovation provides stabilization of hemodynamics and safety of gaseous homeostasis.

EFFECT: higher efficiency.

2 ex

FIELD: medicine.

SUBSTANCE: method involves treating biological object placed in medium containing at least one gas, with gas mixture containing oxygen as one of its ingredients. The treatment is carried out during at least one procedure in cyclic mode keeping given pattern providing saturation and/or desaturation of at least one gas mixture ingredient in biological object tissue cells according to given algorithm. The number of procedures and their periodicity are selected depending on the number of saturated and/or desaturated gases and their saturation and/or desaturation degree.

EFFECT: activated oxidation-reduction and energetic processes.

21 cl

FIELD: medicine.

SUBSTANCE: method involves increasing respiration minute volume after applying carbodioxyperitoneum in a way that CO2 concentration is to be within 32-38 mm of mercury column and remaining at this level during the carbodioxyperitoneum treatment course. The CO2 concentration is supported at 30-32 mm of mercury column for 5-10 min after canceling the carbodioxyperitoneum with following respiration minute volume reduction until CO2 concentration reaches normal values.

EFFECT: reduced frequency of postoperative nausea and vomiting attacks.

1 dwg, 4 tbl

Up!