CN117323519A

CN117323519A - A pediatric transnasal high-flow non-invasive mechanical septal ventilation device

Info

Publication number: CN117323519A
Application number: CN202311295977.6A
Authority: CN
Inventors: 周辉; 段庆宁; 杨逍; 谢金阳; 孙雪梅
Original assignee: Taizhou Peoples Hospital
Current assignee: Taizhou Peoples Hospital
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-01-02

Abstract

The invention relates to the technical field of noninvasive ventilation, in particular to a high-flow noninvasive mechanical-interval ventilation device for children through nose, which comprises: the working box is fixedly provided with a fixing plate; the control instrument is fixedly arranged on the fixed plate, and a gas pipe is communicated with the control instrument; the heater is fixedly arranged on the fixed plate, is connected with the control instrument through a connecting pipe and is used for heating the conveyed gas; the negative pressure control assembly is arranged on the gas transmission pipe; characterized by further comprising: the piston cylinder is fixedly arranged in the working box, and a pumping mechanism connected with the piston cylinder and the heater is arranged in the working box; the reciprocating assembly is arranged in the working box and connected with the pumping mechanism, and a driving mechanism connected with the reciprocating assembly is also arranged in the working box; and the synchronous adjusting mechanism is arranged in the working box and is connected with the reciprocating assembly and the driving mechanism.

Description

Non-invasive mechanical interval ventilation device for children with nasal high flow

Technical Field

The invention relates to the technical field of noninvasive ventilation, in particular to a high-flow noninvasive mechanical-interval ventilation device for children through nose.

Background

The inspiration function of the lung is that when respiratory muscles contract, the thoracic volume expands, the alveoli expand to form negative pressure, and when the respiratory muscles of the person inhaling air from the outside relax, the alveoli elastically contract, so that the pressure in the lung increases and the air is exhaled outwards. Respiratory airflow is created by the pressure differential between the alveoli and the atmosphere. The basic principle of noninvasive mechanical ventilation is to establish this pressure difference mechanically, thus realizing a forced artificial respiration process.

The noninvasive mechanical ventilation has the greatest advantages of no wound and capability of avoiding complications caused by trachea cannula and trachea incision. Non-invasive mechanical ventilation can obviously reduce the tracheal intubation rate and has the trend of reducing the hospitalization time and the death rate of the I CU when treating patients with type I respiratory failure.

When the noninvasive mechanical ventilation device is used for active air supply, the conventional device generally can only perform active air supply, the air supply mode of the device is difficult to be adjusted in a self-adaptive mode according to the breathing state of a patient, and the air supply amount in unit time cannot be adjusted in a self-adaptive mode according to the breathing frequency when the breathing frequency is adjusted, so that the operation of the device is complex.

Disclosure of Invention

The invention aims to provide a non-invasive mechanical interval ventilation device for children with nasal high flow rate, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a pediatric transnasal high flow noninvasive mechanical-septum ventilation device comprising:

the working box is fixedly provided with a fixing plate;

the control instrument is fixedly arranged on the fixed plate, a gas pipe is communicated with the control instrument, and the control instrument is used for adjusting the gas supply mode of the gas pipe;

the heater is fixedly arranged on the fixed plate, is connected with the control instrument through a connecting pipe and is used for heating the conveyed gas;

the negative pressure control component is arranged on the gas pipe and can adaptively switch the working state according to the breathing state of a patient so as to adjust the gas supply state of the gas pipe;

characterized by further comprising:

the piston cylinder is fixedly arranged in the working box, a pumping mechanism connected with the piston cylinder and the heater is arranged in the working box, and the pumping mechanism can intermittently convey air in the piston cylinder into the heater;

the reciprocating assembly is arranged in the working box and connected with the pumping mechanism, a driving mechanism connected with the reciprocating assembly is also arranged in the working box, and the driving mechanism can drive the pumping mechanism to move through the reciprocating assembly so as to adjust the air pressure in the piston cylinder;

the synchronous adjusting mechanism is arranged in the working box and is connected with the reciprocating assembly and the driving mechanism, the synchronous adjusting mechanism can adjust the motion state of the reciprocating assembly through the driving mechanism so as to adjust the air supply frequency of the air pumping mechanism, and meanwhile, the synchronous adjusting mechanism can also adjust the motion state of the air pumping mechanism through the reciprocating assembly so as to synchronously adjust the air supply quantity of the air pumping mechanism.

As a further scheme of the invention: the negative pressure control assembly comprises a negative pressure pipe fixedly arranged on the gas pipe and communicated with the gas pipe, a groove is formed in the inner wall of the negative pressure pipe, and a sealing plate is slidably arranged in the groove;

the negative pressure control assembly further comprises a spring fixedly installed in the negative pressure pipe and abutted to the sealing plate, a moving contact is fixed at one end, away from the spring, of the sealing plate, and a fixed contact matched with the moving contact is fixed in the end, away from the gas transmission pipe, of the negative pressure pipe.

As still further aspects of the invention: the pumping mechanism comprises a guide pipe which is fixedly arranged on the piston cylinder and penetrates through the working box, a piston is movably arranged in the piston cylinder, a supporting rod fixedly connected with the piston is movably arranged on the piston cylinder, a guide component connected with the supporting rod is arranged in the working box, the guide component is connected with the reciprocating component, and the guide pipe is communicated with the heater.

As still further aspects of the invention: the guide assembly comprises a guide rod fixedly installed in the working box, a guide sleeve is movably installed on the guide rod, a limiting plate is fixed on the side wall of the guide sleeve, a limiting groove connected with the reciprocating assembly is formed in the side wall of the limiting plate, and the limiting plate is fixedly connected with the supporting rod.

As still further aspects of the invention: the reciprocating assembly comprises a rotating rod rotatably arranged in the working box, a rotating plate is fixed at the end part of the rotating rod, and a sliding groove is formed in the rotating plate;

the reciprocating assembly further comprises a sliding block which is slidably arranged in the sliding groove, a limiting rod which is clamped with the limiting groove is fixed on one side, facing the limiting plate, of the sliding block, the sliding block is connected with the synchronous adjusting mechanism, and the rotating rod is connected with the driving mechanism.

As still further aspects of the invention: the driving mechanism comprises a transmission rod which is rotatably arranged in the working box, a turntable is fixed on the transmission rod, a plurality of straight grooves which are arranged at equal intervals in circumference are formed in the circumferential side wall of the turntable, a telescopic component which is connected with the straight grooves is arranged in the working box, the telescopic component is connected with the transmission rod, and the transmission rod is connected with the synchronous adjusting mechanism.

As still further aspects of the invention: the telescopic component comprises a sliding rod which is slidably mounted in the straight groove, an arc-shaped plate is fixed at the end part of the sliding rod, which is far away from the straight groove, a belt is sleeved on the arc-shaped plate, the belt is connected with the rotating rod, and the sliding rod is connected with the synchronous adjusting mechanism.

As still further aspects of the invention: the synchronous regulating mechanism comprises a bidirectional screw rod rotatably arranged in the working box, a first threaded sleeve in threaded fit with the bidirectional screw rod is movably arranged on the bidirectional screw rod, a first movable plate is fixed on the first threaded sleeve, a driven component connected with the first movable plate is arranged in the working box, and the driven component is connected with the transmission rod, the rotation rod and the sliding rod.

As still further aspects of the invention: the driven component comprises a first movable sleeve movably mounted on the transmission rod, a plurality of through grooves which are arranged at equal intervals on the circumference and communicated with the straight grooves are formed in the rotary table, and a plurality of first connecting rods which are arranged at equal intervals on the circumference and penetrate through the through grooves are hinged to the first movable sleeve;

the driven component further comprises a traction structure which is arranged in the working box and connected with the rotating rod and the sliding block, the traction structure is connected with the bidirectional screw rod, the first connecting rod is hinged with the sliding rod, and the first movable sleeve is movably connected with the first movable plate.

Compared with the prior art, the invention has the beneficial effects that: this application is when using, under synchronous adjustment mechanism's effect, can need adjust the frequency of ventilating according to patient's health, with the respiratory rate of adjusting patient, simultaneously, synchronous adjustment mechanism still can adjust the transport volume of ventilating at every turn, in order to ensure in the unit time, the air volume of carrying is in a certain amount, when actuating mechanism moves, through reciprocating assembly drive pump gas mechanism motion, and carry the air to in the heater, in order to heat the air of carrying, simultaneously, the heater still accessible gas-supply pipe carries the air to the patient in the nasal cavity, in order to realize the effect of assisting patient's breathing, if the patient can't breathe voluntarily suddenly, under negative pressure control assembly's effect, adjust the transport state of gas-supply pipe, in order to ensure the effect of carrying out the auxiliary respiration to the patient all the time.

Drawings

Fig. 1 is a schematic structural view of one embodiment of a high nasal flow non-invasive mechanical spacing ventilation device for infants.

Fig. 2 is a schematic view of a further angle of an embodiment of a nasal high flow non-invasive mechanical ventilation device for children.

Figure 3 is a schematic illustration of a partial semi-sectional structure of one embodiment of a pediatric transnasal high flow noninvasive mechanical-septum ventilation device.

Fig. 4 is an enlarged schematic view of the structure at a in fig. 3.

Fig. 5 is a schematic diagram of the connection relationship among a part of the pumping mechanism, the reciprocating assembly, the driving mechanism and the synchronous regulating mechanism in one embodiment of the nasal high-flow noninvasive mechanical-interval ventilation device for children.

Fig. 6 is a schematic diagram of an exploded structure of a part of a driving mechanism and a part of a synchronous adjusting mechanism of an embodiment of a nasal high-flow noninvasive mechanical-septum ventilation device for children.

Fig. 7 is a schematic diagram of an exploded view of a partially reciprocating assembly, partially synchronized adjustment mechanism of one embodiment of a nasal high flow noninvasive mechanical-spacer ventilation device for infants.

Fig. 8 is a schematic structural view of a part of a pumping mechanism of an embodiment of a nasal high flow noninvasive mechanical-septum ventilation device for children.

Fig. 9 is a schematic diagram of an exploded view of a part of the pumping mechanism and a part of the reciprocating assembly of one embodiment of a nasal high flow noninvasive mechanical-septum ventilation device for children.

Figure 10 is a schematic diagram of a semi-sectional structure of a negative pressure control assembly in one embodiment of a nasal high flow non-invasive mechanical ventilation device for infants.

Fig. 11 is a schematic diagram of an exploded view of a negative pressure control assembly in one embodiment of a nasal high flow non-invasive mechanical ventilation device for infants.

In the figure: 1. a working box; 2. a fixing plate; 3. a manipulation instrument; 4. a transmission rod; 5. a turntable; 6. a straight groove; 7. a through groove; 8. a first movable sleeve; 9. a first connecting rod; 10. a slide bar; 11. an arc-shaped plate; 12. a belt; 13. a rotating lever; 14. a rotating plate; 15. a chute; 16. a sliding block; 17. a limit rod; 18. a two-way screw rod; 19. a first threaded sleeve; 20. a first movable plate; 21. a second threaded sleeve; 22. a second movable plate; 23. a second movable sleeve; 24. a second connecting rod; 25. a guide rod; 26. a guide sleeve; 27. a limiting plate; 28. a support rod; 29. a piston; 30. a piston cylinder; 31. a conduit; 32. a heater; 33. a gas pipe; 34. a negative pressure pipe; 35. a sealing plate; 36. a spring; 37. a moving contact; 38. and (5) a static contact.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 11, in an embodiment of the present invention, a non-invasive mechanical interval ventilation device for high nasal flow of children includes: the device comprises a working box 1, a fixed plate 2, a control instrument 3, a gas transmission pipe 33, a heater 32, a negative pressure control assembly, a piston cylinder 30, a pumping mechanism, a reciprocating assembly, a driving mechanism and a synchronous adjusting mechanism, wherein when the device is used, the ventilation frequency can be adjusted according to the physical condition of a patient under the action of the synchronous adjusting mechanism so as to adjust the respiratory rate of the patient, meanwhile, the synchronous adjusting mechanism can also adjust the transmission quantity of ventilation each time, so that the transmitted air quantity is ensured to be in a certain quantity in unit time, when the driving mechanism moves, the pumping mechanism is driven to move through the reciprocating assembly, and the air is transmitted into the heater 32 so as to heat the transmitted air, meanwhile, the heater 32 can also transmit the air into the nasal cavity of the patient through the gas transmission pipe 33 so as to realize the effect of assisting the breathing of the patient, and if the patient cannot breathe spontaneously, the transmission state of the gas transmission pipe 33 is adjusted under the action of the negative pressure control assembly so as to ensure the effect of assisting the breathing of the patient all the time.

The method specifically comprises the following steps of:

the working box 1 is fixedly provided with a fixing plate 2;

referring to fig. 1-3, a control device 3 is fixedly mounted on the fixing plate 2, a gas pipe 33 is connected to the control device 3, and the control device 3 is used for adjusting a gas supply mode of the gas pipe 33;

wherein, the switch-on department of gas-supply pipe 33 and controlling appearance 3 is provided with the check valve for the air can only be discharged through gas-supply pipe 33, is provided with the atmospheric pressure detector who is connected with gas-supply pipe 33 in controlling the appearance 3, controls the operating mode that appearance 3 is used for controlling the device, and operating mode can divide into active ventilation and trigger type ventilation, if the patient can breathe independently, accessible controls appearance 3 and adjusts operating mode and breathes for triggering type, if the patient can't breathe independently, accessible controls appearance 3 and adjusts operating mode and breathe for active type, and the port of gas-supply pipe 33 is provided with the face guard, when needs to breathe, covers the face guard at the patient face.

Referring to fig. 1-3, a heater 32 is fixedly installed on the fixing plate 2, the heater 32 is connected with the manipulator 3 through a connecting pipe, and the heater 32 is used for heating the conveyed gas;

the heater 32 may heat the air to a temperature close to the body temperature, and deliver the heated air to the console 3 through the connection tube, and the air in the console 3 is delivered to the mask through the air delivery tube 33, so that the air actively enters the lungs of the patient through the nasal cavity of the patient.

Referring to fig. 1-3, 10 and 11, the negative pressure control assembly is disposed on the air pipe 33, the negative pressure control assembly can adaptively switch working states according to breathing states of a patient to adjust air supply states of the air pipe 33, the negative pressure control assembly includes a negative pressure pipe 34 fixedly mounted on the air pipe 33 and communicated with the air pipe 33, a groove is formed in an inner wall of the negative pressure pipe 34, a sealing plate 35 is slidably mounted in the groove, the negative pressure control assembly further includes a spring 36 fixedly mounted in the negative pressure pipe 34 and abutted to the sealing plate 35, a contact 37 is fixed at one end of the sealing plate 35 away from the spring 36, and a fixed contact 38 matched with the contact 37 is fixed in an end of the negative pressure pipe 34 away from the air pipe 33.

In detail, the mechanical ventilation is used for simulating the natural respiration of a patient, when inhaling, the air is forced to be pressed into the lung by using a pressure larger than the atmospheric pressure, a pressure difference between the inside and the outside of the lung is artificially built, when exhaling, the inhaling pressure is removed, the air in the lung can be discharged by means of the elastic retractive force of the chest and the lung, a complete respiration cycle is completed, a time relay is arranged in the control instrument 3, in an initial state, the spring 36 is in a slightly compressed state, the sealing plate 35 is positioned at the end of the stroke far away from the air pipe 33, the movable contact 37 and the fixed contact 38 are in a fitting state, under the action of the time relay, the two contacts are in contact with a certain time, the air pipe 33 is controlled to actively convey air, when the patient breathes spontaneously, a certain negative pressure is generated in the air pipe 33 when the patient inhales, the sealing plate 35 moves towards the direction far away from the fixed contact 38, the movable contact 37 is separated from the fixed contact 38, the spring 36 is compressed, in the same time, in the initial state, the air pressure detector detects the lowering in the pipe 33, the air pressure in the air pipe is released, the end of the stroke far away from the air pipe 33 is released, the air pressure signal is controlled, the air is controlled by the air detector is controlled, the air is blown out of the lung, the patient is controlled to the air is blown by the air pipe is synchronously, the air is blown by the patient, the air is breathed synchronously, the air is breathed by the patient is synchronously, and the air is breathed by the patient is realized, and the lung is synchronously the lung has been breathed by the patient was has been completed.

Preferably, if the patient cannot breathe spontaneously suddenly, no negative pressure is generated in the gas pipe 33, so that the moving contact 37 and the static contact 38 are always in a fitting state, and after the contact time of the two contacts reaches a set value, the control instrument 3 controls the gas pipe 33 to actively ventilate, so as to adaptively adjust the gas pipe 33 to be in triggered ventilation or active ventilation according to the breathing state of the patient.

Characterized by further comprising:

referring to fig. 3, 5, 8 and 9, a piston cylinder 30 is fixedly installed in the working box 1, a pumping mechanism connected with the piston cylinder 30 and the heater 32 is arranged in the working box 1, the pumping mechanism can intermittently convey air in the piston cylinder 30 into the heater 32, the pumping mechanism comprises a guide pipe 31 fixedly installed on the piston cylinder 30 and penetrating through the working box 1, a piston 29 is movably installed in the piston cylinder 30, a supporting rod 28 fixedly connected with the piston 29 is movably installed on the piston cylinder 30, a guide assembly connected with the supporting rod 28 is arranged in the working box 1, the guide assembly is connected with the reciprocating assembly, the guide pipe 31 is communicated with the heater 32, the guide assembly comprises a guide rod 25 fixedly installed in the working box 1, a guide sleeve 26 is movably installed on the guide rod 25, a limit plate 27 is fixedly installed on the side wall of the guide sleeve 26, a limit plate 27 is provided with a limit groove connected with the limit plate 27, and the limit groove is fixedly connected with the limit plate 28.

It should be noted that, the piston cylinder 30 is provided with a pipeline connected with external air or an air storage tank, the pipeline is provided with a one-way valve, when a patient actively inhales or the contact controls the air pipe 33 to actively ventilate, at this time, under the action of the reciprocating assembly, the limiting plate 27 is driven to move, thereby driving the guide sleeve 26 to move along the length direction of the guide rod 25, the guide sleeve 26 and the guide rod 25 have the guiding function, ensuring that the limiting plate 27 moves along the length direction of the guide rod 25, the limiting plate 27 also drives the support rod 28 to move, so that the piston 29 moves in the piston cylinder 30, under the action of the piston 29, the air in the piston cylinder 30 is conveyed into the heater 32 through the guide pipe 31, the heated air is heated under the action of the heater 32, the heated air is conveyed into the manipulator 3 through the connecting pipe and conveyed into the nasal cavity of the patient through the air pipe 33, and when the piston 29 moves to the end of the stroke, the reciprocating assembly is driven to move towards the initial position, thereby driving the piston 29 to move, and the piston 30 is sucked into the piston cylinder 30 again, and the steps are repeated, thereby realizing the active effect on the patient.

Referring to fig. 3, 5, 7 and 9, the reciprocating assembly is disposed in the working box 1 and connected with the pumping mechanism, the reciprocating assembly includes a rotating rod 13 rotatably mounted in the working box 1, a rotating plate 14 is fixed at an end of the rotating rod 13, a sliding groove 15 is formed in the rotating plate 14, the reciprocating assembly further includes a sliding block 16 slidably mounted in the sliding groove 15, a limiting rod 17 engaged with the limiting groove is fixed on one side of the sliding block 16 facing the limiting plate 27, the sliding block 16 is connected with the synchronous adjusting mechanism, and the rotating rod 13 is connected with the driving mechanism.

Further, when the patient needs to be inflated, if the patient can breathe spontaneously, under the action of the air pressure detector, the driving mechanism is controlled to work when the patient breathes, if the patient cannot breathe spontaneously, under the action of the contact, the driving mechanism is controlled to move intermittently, at this time, under the action of the driving mechanism, the rotating rod 13 is driven to rotate, thereby driving the rotating plate 14 to rotate, the rotating plate 14 also drives the sliding block 16 arranged in the chute 15 to move around the rotating rod 13, so as to drive the limiting rod 17 to move, and because the limiting rod 17 is clamped with the limiting groove, the limiting plate 27 moves intermittently and reciprocally along the length direction of the guide rod 25.

Preferably, if the amount of gas to be delivered is to be regulated each time, the movement stroke of the piston 29 in the piston cylinder 30 is to be regulated each time, and at this time, the sliding block 16 is driven to slide in the sliding groove 15 under the action of the synchronous regulating mechanism, so that the distance between the sliding block 16 and the rotation center of the rotation rod 13 is changed, and the movement stroke of the piston 29 is regulated to change the amount of gas to be delivered.

Referring to fig. 3-6, a driving mechanism connected with the reciprocating assembly is further disposed in the working box 1, the driving mechanism can drive the pumping mechanism to move through the reciprocating assembly so as to adjust air pressure in the piston cylinder 30, the driving mechanism comprises a driving rod 4 rotatably mounted in the working box 1, a turntable 5 is fixed on the driving rod 4, a plurality of straight grooves 6 are formed in circumferential side walls of the turntable 5 at equal intervals, a telescopic assembly connected with the straight grooves 6 is disposed in the working box 1, the telescopic assembly is connected with a rotating rod 13, the driving rod 4 is connected with the synchronous adjusting mechanism, the telescopic assembly comprises a sliding rod 10 slidably mounted in the straight grooves 6, an arc plate 11 is fixed at an end part of the sliding rod 10 away from the straight grooves 6, a belt 12 is sleeved on the arc plate 11 and connected with the rotating rod 13, and the sliding rod 10 is connected with the synchronous adjusting mechanism.

Still further, when the inhalation time or the contact time of the patient reaches the set value, the transmission rod 4 is controlled to rotate, so as to drive the turntable 5 to rotate, the sliding rod 10 positioned in the straight groove 6 rotates around the transmission rod 4, the sliding rod 10 also drives the arc plate 11 to move, so that the belt 12 drives the rotating rod 13 to rotate, and under the action of the rotating rod 13, the driving piston 29 slides in the piston cylinder 30 to convey the gas to the lung of the patient through the gas pipe 33.

Preferably, the belt 12 can stretch to a certain extent, if the patient can breathe actively, under the action of the air pressure detector, the driving rod 4 is controlled to rotate when the patient inhales, and the number of turns of each turn is kept constant, so as to ensure that the amount of active air supply is kept constant, if the patient cannot breathe actively, the driving rod 4 will rotate continuously to supply air to the patient, and if the respiratory rate of the patient needs to be regulated, at this time, under the action of the synchronous regulating mechanism, the sliding rod 10 is driven to slide in the straight groove 6, so that the distance between the arc 11 and the rotation center of the turntable 5 is changed, and the movement rate of the belt 12 is regulated, so that the rotation speed of the rotating rod 13 is changed, so that the movement frequency of the piston 29 is changed, and the respiratory rate of the patient is regulated by changing the respiratory rate of the air supply.

Referring to fig. 3-7, a synchronous adjusting mechanism is disposed in the working chamber 1 and connected with the reciprocating assembly and the driving mechanism, the synchronous adjusting mechanism can adjust the motion state of the reciprocating assembly through the driving mechanism to adjust the air supply frequency of the air pumping mechanism, meanwhile, the synchronous adjusting mechanism can adjust the motion state of the air pumping mechanism through the reciprocating assembly to synchronously adjust the air supply amount of the air pumping mechanism, the synchronous adjusting mechanism comprises a bidirectional screw rod 18 rotatably mounted in the working chamber 1, a first threaded sleeve 19 in threaded fit with the bidirectional screw rod 18 is movably mounted on the bidirectional screw rod 18, a first movable plate 20 is fixed on the first threaded sleeve 19, a driven assembly connected with the first movable plate 20 is disposed in the working chamber 1, the driven component is connected with the transmission rod 4, the rotating rod 13 and the sliding rod 10, wherein the driven component comprises a first movable sleeve 8 movably mounted on the transmission rod 4, a plurality of through grooves 7 which are circumferentially equidistant and communicated with the straight grooves 6 are formed in the rotary disc 5, a plurality of first connecting rods 9 which are circumferentially equidistant and penetrate through the through grooves 7 are hinged on the first movable sleeve 8, the driven component also comprises a pulling structure which is arranged in the working box 1 and connected with the rotating rod 13 and the sliding block 16, the pulling structure is connected with a bidirectional screw rod 18, the first connecting rods 9 are hinged with the sliding rod 10, the first movable sleeve 8 is movably connected with the first movable plate 20, the above-mentioned traction structure includes a second threaded sleeve 21 movably mounted on the bidirectional screw 18 and in threaded engagement with the bidirectional screw 18, a second movable plate 22 is fixed on the second threaded sleeve 21, the traction structure further includes a second movable sleeve 23 movably mounted on the rotating rod 13, a second connecting rod 24 hinged to the sliding block 16 is hinged to the second movable sleeve 23, and the second movable sleeve 23 is movably connected with the second movable plate 22.

When the patient cannot breathe spontaneously, the air supply frequency needs to be adjusted according to the physical condition of the patient so as to change the breathing frequency of the patient, when the breathing frequency is changed, the air supply amount in unit time is kept within a certain range, when the air supply frequency needs to be adjusted, the air supply amount is synchronously adjusted, when the breathing frequency needs to be quickened, at the moment, the bidirectional screw rod 18 rotates to drive the first threaded sleeve 19 and the second threaded sleeve 21 to move towards the direction close to each other, the first threaded sleeve 19 drives the first movable plate 20 to move so as to drive the first movable sleeve 8 to move towards the direction of the rotary disc 5, the first movable sleeve 8 also drives the first connecting rod 9 to move so as to drive the sliding rod 10 to move towards the direction away from the straight groove 6, the distance between the arc plates 11 is increased, so that the belt 12 is stretched, the number of circles of rotation of the rotating rod 13 is driven by the belt 12 is increased when the driving rod 4 rotates for one circle, the frequency of reciprocating motion of the piston 29 in the piston cylinder 30 is increased, meanwhile, the second threaded sleeve 21 also drives the second movable plate 22 to move towards the direction close to each other, the second movable sleeve 23 moves towards the direction of the limit rod 13, and the distance between the second movable sleeve 23 and the limit rod 23 is reduced along the direction of the length of the limit rod 13, and the distance between the limit rod and the limit rod 13 is reduced along the direction of the length of the limit rod 23 and the direction of the limit rod 13 is reduced.

Preferably, similarly, when the respiratory rate of the patient needs to be slowed down, the air supply amount in unit time needs to be synchronously increased, the bidirectional screw rod 18 is reversed, so that the interval between the arc plates 11 is reduced, the belt 12 automatically contracts, so that the rotating speed of the rotating rod 13 is reduced, meanwhile, the sliding block 16 moves along the length direction of the sliding groove 15 and moves towards the direction away from the rotating rod 13, so that the stroke of the piston 29 moving in the piston cylinder 30 is increased in unit time, and the air supply amount is synchronously adjusted when the respiratory rate is changed under the action of the bidirectional screw rod 18, so as to ensure that the air supply amount in unit time is kept within a certain range.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A pediatric transnasal high flow noninvasive mechanical-septum ventilation device comprising:

the working box (1), the fixed plate (2) is fixedly arranged on the working box (1);

the control instrument (3) is fixedly arranged on the fixed plate (2), a gas pipe (33) is communicated with the control instrument (3), and the control instrument (3) is used for adjusting a gas supply mode of the gas pipe (33);

the heater (32) is fixedly arranged on the fixed plate (2), the heater (32) is connected with the control instrument (3) through a connecting pipe, and the heater (32) is used for heating the conveyed gas;

the negative pressure control component is arranged on the air delivery pipe (33) and can adaptively switch the working state according to the breathing state of a patient so as to adjust the air delivery state of the air delivery pipe (33);

characterized by further comprising:

the piston cylinder (30) is fixedly arranged in the working box (1), and a pumping mechanism connected with the piston cylinder (30) and the heater (32) is arranged in the working box (1) and can intermittently convey air in the piston cylinder (30) into the heater (32);

the reciprocating assembly is arranged in the working box (1) and is connected with the pumping mechanism, a driving mechanism connected with the reciprocating assembly is further arranged in the working box (1), and the driving mechanism can drive the pumping mechanism to move through the reciprocating assembly so as to adjust the air pressure in the piston cylinder (30);

the synchronous adjusting mechanism is arranged in the working box (1) and is connected with the reciprocating assembly and the driving mechanism, the synchronous adjusting mechanism can adjust the motion state of the reciprocating assembly through the driving mechanism so as to adjust the air supply frequency of the air pumping mechanism, and meanwhile, the synchronous adjusting mechanism can also adjust the motion state of the air pumping mechanism through the reciprocating assembly so as to synchronously adjust the air supply quantity of the air pumping mechanism.

2. The high-flow noninvasive mechanical-interval ventilation device for children's transnasal delivery according to claim 1, characterized in that the negative pressure control assembly comprises a negative pressure pipe (34) fixedly installed on the gas pipe (33) and communicated with the gas pipe (33), a groove is formed in the inner wall of the negative pressure pipe (34), and a sealing plate (35) is slidably installed in the groove;

the negative pressure control assembly further comprises a spring (36) fixedly installed in the negative pressure pipe (34) and abutted to the sealing plate (35), a moving contact (37) is fixed at one end, away from the spring (36), of the sealing plate (35), and a fixed contact (38) matched with the moving contact (37) is fixed in the end, away from the gas pipe (33), of the negative pressure pipe (34).

3. The nasal high-flow noninvasive mechanical-interval ventilation device for children according to claim 1, characterized in that the pumping mechanism comprises a guide pipe (31) fixedly installed on the piston cylinder (30) and penetrating through the working box (1), a piston (29) is movably installed in the piston cylinder (30), a supporting rod (28) fixedly connected with the piston (29) is movably installed on the piston cylinder (30), a guide assembly connected with the supporting rod (28) is arranged in the working box (1), the guide assembly is connected with the reciprocating assembly, and the guide pipe (31) is communicated with the heater (32).

4. A high-flow noninvasive mechanical-spacing ventilation device for children through nose according to claim 3, characterized in that the guide assembly comprises a guide rod (25) fixedly installed in the working box (1), a guide sleeve (26) is movably installed on the guide rod (25), a limiting plate (27) is fixed on the side wall of the guide sleeve (26), a limiting groove connected with the reciprocating assembly is formed in the side wall of the limiting plate (27), and the limiting plate (27) is fixedly connected with the supporting rod (28).

5. The children's nasal high flow noninvasive mechanical-interval ventilation device according to claim 4, wherein the reciprocating assembly comprises a rotating rod (13) rotatably installed in the working box (1), a rotating plate (14) is fixed at the end part of the rotating rod (13), and a sliding groove (15) is formed in the rotating plate (14);

the reciprocating assembly further comprises a sliding block (16) which is slidably arranged in the sliding groove (15), a limiting rod (17) which is clamped with the limiting groove is fixed on one side of the sliding block (16) facing the limiting plate (27), the sliding block (16) is connected with the synchronous adjusting mechanism, and the rotating rod (13) is connected with the driving mechanism.

6. The children's nasal high flow noninvasive mechanical interval ventilation device according to claim 5, wherein the driving mechanism comprises a transmission rod (4) rotatably installed in the working box (1), a rotary table (5) is fixed on the transmission rod (4), a plurality of straight grooves (6) which are circumferentially equidistant are formed in the circumferential side wall of the rotary table (5), a telescopic component connected with the straight grooves (6) is arranged in the working box (1), the telescopic component is connected with the rotary rod (13), and the transmission rod (4) is connected with the synchronous adjusting mechanism.

7. The children's nasal high flow noninvasive mechanical interval ventilation device according to claim 6, wherein the telescopic component comprises a sliding rod (10) which is slidably installed in the straight groove (6), an arc-shaped plate (11) is fixed at the end part of the sliding rod (10) far away from the straight groove (6), a belt (12) is sleeved on the arc-shaped plate (11), the belt (12) is connected with the rotating rod (13), and the sliding rod (10) is connected with the synchronous adjusting mechanism.

8. The children's nasal high flow noninvasive mechanical interval ventilation device according to claim 7, wherein the synchronous adjusting mechanism comprises a bidirectional screw rod (18) rotatably installed in the working box (1), a first threaded sleeve (19) in threaded fit with the bidirectional screw rod (18) is movably installed on the bidirectional screw rod (18), a first movable plate (20) is fixed on the first threaded sleeve (19), a driven component connected with the first movable plate (20) is arranged in the working box (1), and the driven component is connected with the transmission rod (4), the rotating rod (13) and the sliding rod (10).

9. The children's nasal high-flow noninvasive mechanical-interval ventilation device according to claim 8, characterized in that the driven component comprises a first movable sleeve (8) movably mounted on the transmission rod (4), the turntable (5) is provided with a plurality of through grooves (7) which are circumferentially equidistant and communicated with the straight grooves (6), and the first movable sleeve (8) is hinged with a plurality of first connecting rods (9) which are circumferentially equidistant and penetrate through the through grooves (7);

the driven assembly further comprises a traction structure which is arranged in the working box (1) and connected with the rotating rod (13) and the sliding block (16), the traction structure is connected with the bidirectional screw rod (18), the first connecting rod (9) is hinged with the sliding rod (10), and the first movable sleeve (8) is movably connected with the first movable plate (20).

10. The high-flow noninvasive mechanical-interval ventilation device for children's transnasal surgery according to claim 9, wherein the traction structure comprises a second threaded sleeve (21) movably installed on the bidirectional screw rod (18) and in threaded fit with the bidirectional screw rod (18), and a second movable plate (22) is fixed on the second threaded sleeve (21);

the traction structure further comprises a second movable sleeve (23) movably mounted on the rotating rod (13), a second connecting rod (24) hinged with the sliding block (16) is hinged to the second movable sleeve (23), and the second movable sleeve (23) is movably connected with the second movable plate (22).