WO2006088007A1

WO2006088007A1 - Respiration assisting apparatus

Info

Publication number: WO2006088007A1
Application number: PCT/JP2006/302501
Authority: WO
Inventors: Kazufuku Nitta
Original assignee: Metran Co., Ltd.
Priority date: 2005-02-15
Filing date: 2006-02-14
Publication date: 2006-08-24
Also published as: JP4993862B2; JP2006223339A

Abstract

[PROBLEMS] To provide a respiration assisting apparatus easily installable on a target person and allowing it to be generally simplified. [MEANS FOR SOLVING PROBLEMS] This respiration assisting apparatus comprises an apparatus body (1) and a vibration generating part (2). The apparatus body (1) is so formed as to feed an inspiring gas toward the nasal cavity of the target person. The vibration generating part (2) is so formed as to provide vibration to the inspiring gas. The apparatus body (1) can securely feed the inspiring gas since it comprises prongs inserted into the nasal cavity of the target person. The vibration generating part (2) is formed, for example, of a valve mechanism changing the passed amount of the inspiring gas.

Description

Specification

Respiratory device

Technical field

[0001] The present invention relates to a respiratory assistance device, and more particularly to a device that assists breathing by supplying inhalation to a nasal cavity.

Background art

[0002] Conventionally, a respiratory assistance device using a ventilator has been known. In this device, an endotracheal tube is attached to a so-called Y-piece and this endotracheal tube is intubated into the user's airway. In addition, connect an inspiratory tube and an expiratory tube to the Y piece. These Y pieces, the inspiratory tube, and the expiratory tube form a breathing circuit. Connect a ventilator to the beginning of the inspiratory tube.

[0003] According to such a conventional respiratory assistance device, it is possible to cause the subject to breathe by sending inspiration directly from the ventilator into the airway. Moreover, the exchange efficiency between the air in the lungs and the inhaled air that has been sent in can also be improved by giving vibration to the inhalation. According to such a breathing assistance device, it is possible to cause a subject who cannot breathe spontaneously to breathe.

[0004] By the way, in such a conventional respiratory assistance device, since the ventilator and the breathing circuit are used, the entire device becomes expensive. In addition, since the conventional apparatus performs a fistula into the airway, there is an inconvenience that it takes time and labor to install.

[0005] On the other hand, a device that assists breathing by supplying positive pressure oxygen from the nasal cavity (commonly known as “CPAP”) has been conventionally known for subjects capable of spontaneous breathing. This device has the features that it can be easily mounted on the subject and the configuration of the device is simple.

[0006] However, conventional CPAP has a problem that ventilation efficiency in the lung is poor. For this reason, the conventional CPAP is not intended as a substitute for a respiratory support device using a ventilator, but only for those who can breathe spontaneously.

Disclosure of the invention

Problems to be solved by the invention [0007] The present invention has been made in view of such a situation, and can be easily attached to a subject, can simplify the entire apparatus, and can breathe with high ventilation efficiency in the lungs. It is intended to provide auxiliary equipment.

Means for solving the problem

[0008] A respiratory assistance device according to the present invention includes a device main body and a vibration generator. The apparatus main body is configured to send inspiratory gas toward the subject's nasal cavity. The vibration generating unit is configured to apply vibration to the intake gas.

[0009] It is preferable that the device main body has a blower inserted into the nasal cavity of the subject.

[0010] The apparatus main body may include a supply unit and a supply path. The supply unit is configured to send intake gas toward the supply path. The supply path is a part of a moving path of the intake gas that is sent to the nasal cavity of the subject by the supply force. The vibration generating unit includes a valve mechanism. The valve mechanism is configured to vary the passage amount of the intake gas in the supply passage with time.

[0011] The frequency of vibration applied to the intake gas by the vibration generator is preferably 3 Hz.

Within the range of ~ 50Hz.

[0012] The respiratory assistance method according to the present invention is configured to send out an inspiratory gas to which vibration is applied toward the subject's nasal cavity.

The invention's effect

[0013] According to the respiratory assistance device of the present invention, it is possible to provide a respiratory assistance device that can be easily attached to a subject and that can simplify the entire device.

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] A respiratory assistance device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0015] (Configuration of the present embodiment)

This respiratory assistance device includes a device main body 1 and a vibration generator 2 as main elements (see FIG. 1).

[0016] The device main body 1 sends out inhaled gas toward the subject's nasal cavity. This implementation The apparatus main body 1 in this state includes a supply unit 11, a supply path 12, a pressure reducing valve 13, a blow-out port 14, and a nasal force-urele 15 as main elements.

The supply unit 11 sends out oxygen gas, which is a part of the intake gas, toward the supply path 12. The supply unit 11 is, for example, a gas cylinder or a pipe arranged indoors. The supply unit 11 is configured to send oxygen gas to the supply path 12 at a positive pressure.

The supply path 12 forms a part of the moving path of the intake gas that is sent from the supply unit 11 to the nasal cavity of the subject. In this embodiment, the supply path 12 is constituted by a pipe or a flexible tube.

[0019] The pressure reducing valve 13 is attached in the middle of the supply path 12, and prevents the internal pressure of the supply path 12 from becoming excessive. As such a pressure reducing valve 13, a conventionally known one can be used, and a detailed description thereof will be omitted.

[0020] The outlet 14 is a portion for blowing oxygen gas supplied from the supply unit 11 into an opening 153 (described later) of the force-lease 15.

[0021] The force-leap 15 is formed in a substantially cylindrical shape as a whole, and includes two prones 151, a resistance nozzle 152, and an opening 153.

[0022] The two blowers 151 have a shape and size that can be inserted into the nasal cavity of the subject. In addition, an opening is formed at the tip (lower end in FIG. 1) of these blowers 151 so that inhaled gas can be blown out to the outside (that is, inside the nasal cavity).

[0023] The resistance nozzle 152 is formed in a cylindrical shape, and communicates the inside and outside of the force-lay 15 via a thin through hole.

[0024] The opening 153 is formed so that the air outlet 14 can be disposed inside and the outside air can be introduced into the inside of the force-leap 15.

[0025] Since the apparatus main body 1 used in the present embodiment is basically the same as the apparatus conventionally used as N-CPAP, further detailed description is omitted.

The vibration generating unit 2 is configured to apply vibration to the intake gas supplied by the supply unit 11 of the apparatus main body 1. In the present embodiment, the vibration generating unit 2 is realized by a valve mechanism. This vibration generator 2 determines the passage of intake gas through the supply passage 12 over time (ie It is configured to vary (with changes in time). For example, an electromagnetic valve can be used as such a valve mechanism. Control of a valve mechanism such as a solenoid valve can be easily performed by using an appropriate controller.

[0027] In the present embodiment, it is preferable that the frequency of vibration applied to the intake gas by the vibration generating unit 2 is in the range of 3Hz to 50Hz!

(Operation of the present embodiment)

Next, a breathing assistance method using the above-described apparatus will be described. First, the force-yure 15 prone 151 is inserted into the subject's nasal cavity, and the force-yure 15 is fixed to the subject in this state. The fixing method may be the method used in normal N-CPAP.

Next, oxygen gas that is a part of the intake gas is supplied from the supply unit 11 of the apparatus body 1 to the supply path 1.

Blow inside 2.

On the other hand, the vibration generating unit 2 changes the flow of oxygen gas (that is, intake gas) flowing through the supply path 12 with time (that is, with time). An example of the oxygen gas passage amount in the vibration generating unit 2 is shown in FIG. In this example, the waveform is varied with a square wave shape, but an appropriate waveform such as a sine wave shape or a sawtooth shape can be used.

[0031] Oxygen gas (intake gas) that has passed through the vibration generating unit 2 is blown out from the air outlet 14 toward the inside of the opening 153 of the force lip 15 with a positive pressure. Figure 3 shows an example of the oxygen gas pressure pattern when blown out. Thus, according to the present embodiment, since the passage amount of the oxygen gas (intake gas) is changed in the vibration generating unit 2, the force S that gives vibration to the intake gas can be achieved. The vibration frequency in the intake gas is almost equal to the vibration frequency in the vibration generating unit 2. In this embodiment, the vibration in the intake gas is preferably 3 Hz to 50 Hz. This range of vibration is considered suitable for the exchange of gas in the lung.

[0032] The oxygen gas blown out to the force-ure 15 travels toward the inside of the force-ure 15. At this time, in this embodiment, the opening 153 has a negative pressure, and draws external air into the force-relay 15. Accordingly, inside the force-relay 15, the oxygen gas supplied from the supply unit 12 and the air from the external force are mixed and become intake gas.

Here, when the internal pressure of the force-swell 15 becomes excessive, a part of the intake gas can be discharged from the resistance nozzle 152 to reduce the internal pressure. [0034] The intake gas supplied to the inside of the force-liure 15 reaches the prone 151 and blows out from the blown 151 toward the nasal cavity of the subject. At this time, in the present embodiment, the vibration generator 2 vibrates the oxygen gas, so that the inhalation gas blown into the nasal cavity can be vibrated as shown in FIG. That is, according to the present embodiment, the inhaled gas having vibration can be supplied to the nasal cavity of the subject.

[0035] As described above, according to the present embodiment, by supplying inspiratory gas having vibration to the subject, it is possible to assist the subject's breathing without using the ventilator. In addition, by giving vibration to the inspiratory gas, the exchange efficiency between the air in the lungs and the inhaled air that has been sent in can be improved.

[0036] Then, it becomes possible to use the apparatus of the present embodiment for a part of subjects who have used the ventilator (persons who are not relatively serious). This makes it possible to effectively use the ventilator for serious patients.

[0037] In the present embodiment, since a ventilator or a breathing circuit is not used !, the cost of the entire apparatus can be reduced.

Furthermore, in the present embodiment, since inhalation is supplied from the nasal cavity of the subject, it is not necessary to intubate the endotracheal tube into the airway. Then, the possibility of causing pain to the subject can be reduced. Furthermore, it is possible to reduce the time and effort required to install the device.

[0039] Therefore, the apparatus of the present embodiment has an advantage that it can be easily attached to a subject and the entire apparatus can be simplified.

[0040] Further, in the present embodiment, since the inhalation is supplied to the nasal cavity using the blower 151, the inhalation can easily reach the lungs of the subject, and the supply of the inhalation gas can be ensured. There is.

[0041] Further, in the present embodiment, since the electromagnetic valve is used as the vibration generating unit 2, there is an advantage that the configuration of the apparatus is simple and the control of the vibration waveform and the frequency is easy.

Note that the respiratory assistance device and the respiratory assistance method according to the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. . For example, in the above embodiment, a valve mechanism is assumed as the vibration generating unit 2, but various means can be used as long as it can provide vibration to the intake gas. For example, various means are conceivable, such as a method of vibrating a diaphragm with an electromagnetic coil and a method of vibrating by reciprocating a solenoid or a piston. In addition, the mechanism is not limited to a physical mechanism, and may be, for example, a means for generating vibration using a chemical reaction (such as generation of bubbles).

In the above embodiment, the force-urele 15 having the blown 151 is used. However, any configuration may be used as long as it can supply inhalation gas to the nasal cavity. For example, the use of a nasal mask is considered possible, although the supply efficiency of intake gas is expected to decrease.

Brief Description of Drawings

FIG. 1 is an explanatory diagram showing a schematic configuration of a respiratory assistance device according to an embodiment of the present invention.

FIG. 2 is a graph showing an example of the amount of oxygen gas passing through the vibration generating unit.

FIG. 3 is a graph showing pressure fluctuations of intake gas supplied to the nasal cavity.

Explanation of symbols

[0046] 1 Device body

11 Supply section

12 Supply channel

13 Pressure reducing valve

14 Air outlet

15 Powerful Yure

151 Prawn

152 Resistance nozzle

153 opening

2 Vibration generator

Claims

The scope of the claims

[1] A device main body and a vibration generator are provided.

The apparatus main body is configured to send inspiratory gas toward a subject's nasal cavity, and the vibration generating unit is configured to impart vibration to the inspiratory gas.

A respiratory assistance device characterized by that.

[2] The apparatus main body has a blower inserted into the nasal cavity of the subject.

The respiratory assistance device according to claim 1.

[3] The apparatus body includes a supply unit and a supply path.

The supply section is configured to send out intake gas toward the supply path, and the supply path is a moving path of the intake gas sent from the supply section toward the nasal cavity of the subject. Part

The vibration generating unit includes a valve mechanism,

The valve mechanism is configured to change the passage amount of the intake gas in the supply passage with time.

The respiratory assistance device according to claim 1 or 2, characterized in that.

[4] The respiratory assistance device according to any one of claims 1 to 3, wherein a frequency of vibration applied to the inhaled gas by the vibration generating unit is within a range of 3Hz to 50Hz.

[5] A method for assisting breathing, characterized by sending out inhaled gas to which vibration is applied toward a subject's nasal cavity.