KR102719545B1 - Breathing circuit device for ventilator - Google Patents

Abstract

The present invention relates to a breathing circuit device for a respirator, and more particularly, to a breathing circuit device for a respirator, which can sufficiently heat breathing gas without using a heating wire, thereby providing a patient with breathing gas humidified at an appropriate temperature, without the risk of electromagnetic waves, and making it easy to manage the breathing circuit, including: an intake tube through which breathing gas generated from a respirator connected to one end moves toward a patient; a humidification module which is provided at the other end of the intake tube and receives sterilized water heated from a heating module to supplement moisture to the breathing gas passing through the intake tube; and a moisture supply tube which connects the heating module and the humidification module and supplies sterilized water heated from the heating module to the humidification module; wherein the moisture supply tube is provided adjacently along the longitudinal direction of the intake tube, so that the breathing gas passing through the intake tube is warmed by the influence of the heated sterilized water passing through the moisture supply tube.

Description

{Breathing circuit device for ventilator}

The present invention relates to a breathing circuit device for a respirator, and more particularly, to a breathing circuit device for a respirator capable of providing sufficiently heated breathing gas.

In general, a ventilator is a device that helps patients with respiratory failure breathe who cannot breathe on their own. The respiratory gas generated from the ventilator is supplied to the patient through an inhalation tube connected to the patient's airway, and the exhaust gas, including carbon dioxide exhaled by the patient, is returned to the ventilator through the exhaust tube.

In order to form this breathing cycle, as shown in Fig. 1, a breathing circuit is provided between the ventilator (1) and the patient, including an inhalation tube (2), an exhaust tube (3), a filter (4), a humidifier chamber (5) for supplying moisture to the breathing gas, and a water trap (6) for removing condensate.

The humidifier chamber (5) constituting the respiratory circuit is configured to heat sterilized water by power supply and convert it into steam, so that the heated steam is supplied to the patient through the intake tube (2) together with respiratory gas. However, if the intake tube (2) is not equipped with a heating wire, sufficiently heated respiratory gas cannot be supplied, and if used in this state for a long period of time, there is a possibility that it may have a negative effect on the patient.

To solve these problems, an intake manifold (2) equipped with a heated wire has been introduced. However, there are many connection points when used, and many connection devices such as temperature sensors and heating probes make it difficult to operate, and there is a high possibility of failure and the risk of electromagnetic waves.

Republic of Korea Publication Patent No. 10-2020-0143822 'Breathing tube device for artificial respirator'

The present invention is intended to solve the above problems, and the purpose is to provide a breathing circuit device for an artificial respirator capable of sufficiently heating breathing gas without using a heating wire, thereby providing a patient with breathing gas humidified at an appropriate temperature, having no risk of electromagnetic waves, and making breathing circuit management easy.

In order to achieve the above object, the present invention provides a breathing circuit device for an artificial respirator, comprising: an intake tube through which breathing gas generated from a respirator connected to one end moves toward a patient; a humidifying module provided at the other end of the intake tube to receive sterilized water heated by a heating module and to supplement moisture to the breathing gas passing through the intake tube; and a moisture supply tube connecting the heating module and the humidifying module and supplying the sterilized water heated by the heating module to the humidifying module; wherein the moisture supply tube is provided adjacently along the length of the intake tube, so that the breathing gas passing through the intake tube is warmed by the influence of the heated sterilized water passing through the moisture supply tube.

Additionally, the water supply pipe can be wound from one end of the intake pipe to the other end.

In addition, the device may further include a water recovery pipe that connects the heating module and the humidifying module and allows the remaining sterilized water in the humidifying module to be recovered to the heating module.

Additionally, the water supply pipe and the water recovery pipe can be wound from one end of the intake pipe to the other end so as to be arranged alternately.

In addition, the humidifying module may be equipped with a humidifying filter inside to naturally vaporize heated sterilized water supplied through a water supply pipe.

According to the present invention, a moisture supply pipe through which heated sterilized water passes is provided adjacent to an intake tube, so that respiratory gas passing through the intake tube is heated to a predetermined temperature by the heated sterilized water passing through the moisture supply pipe, and moisture of the heated sterilized water is supplemented to the heated respiratory gas in this way within a humidifying module, so that respiratory gas having an optimal humidity and temperature can be provided to a patient.

In addition, since the remaining sterilized water in the humidifying module is returned to the heating module through the moisture recovery pipe and reused, respiratory gas with optimal humidity and temperature can be provided to the patient for a long period of time without continuous supply of sterilized water.

This invention does not involve a risk of electromagnetic waves because no heating wire enters the breathing circuit, and can facilitate management of the breathing circuit by minimizing the connecting portion between each component.

Figure 1 is a schematic diagram showing a conventional breathing circuit device for an artificial respirator.
Figure 2 is a schematic diagram showing a breathing circuit device for an artificial respirator according to the present invention.
Figure 3 is an exploded perspective view showing a humidifying module applied to a breathing circuit device for an artificial respirator according to the present invention.
Figure 4 is a cross-sectional side view showing a humidifying module applied to a breathing circuit device for an artificial respirator according to the present invention.
Figure 5 is a cross-sectional view showing a humidifying module applied to a breathing circuit device for an artificial respirator according to the present invention.

The present invention proposes a respiratory circuit device for a respirator, which comprises: an intake tube through which respiratory gas generated from a respirator connected to one end moves toward a patient without using a heating wire, so as to sufficiently heat respiratory gas, thereby providing a patient with humidified respiratory gas at an appropriate temperature, without the risk of electromagnetic waves, and with easy management of the respiratory circuit; a humidification module which is provided at the other end of the intake tube and receives sterilized water heated by a heating module to supplement moisture to the respiratory gas passing through the intake tube; and a moisture supply tube which connects the heating module and the humidification module and supplies sterilized water heated by the heating module to the humidification module; wherein the moisture supply tube is provided adjacently along the longitudinal direction of the intake tube, so that the respiratory gas passing through the intake tube is warmed by the influence of the heated sterilized water passing through the moisture supply tube.

The scope of the present invention is not limited to the embodiments described below, and various modifications may be made by a person having ordinary knowledge in the relevant technical field without departing from the technical spirit of the present invention.

Hereinafter, the breathing circuit device for an artificial respirator according to the present invention is described in detail with reference to the attached drawings 2 to 5.

The breathing circuit device for an artificial respirator according to the present invention connects the artificial respirator (100) and the patient, and can be configured so that the respiratory gas generated from the artificial respirator (100) is supplied to the patient, and the exhaust gas including carbon dioxide exhaled by the patient flows into the artificial respirator (100). In particular, it is configured so that the respiratory gas having the optimal humidity and temperature can be supplied to the patient, and to this end, the present invention includes an intake tube (200), a humidifying module (400), and a moisture supply pipe (510) as illustrated in FIG. 2.

The intake tube (200) is in the form of a tube having a predetermined length, one end of which is connected to the respirator (100) and the other end is connected to the humidifying module (400). Accordingly, the respiratory gas generated from the respirator (100) moves along the intake tube (200) and is supplied to the patient through the humidifying module (400).

The humidifying module (400) is connected to the other end of the intake pipe (200) at one end and to the branch pipe (600) directly connected to the patient at the other end. This humidifying module (400) receives sterilized water heated from the heating module (300) and supplements moisture to the respiratory gas that has been introduced through the intake pipe (200). Here, the heating module (300) may be configured to heat the sterilized water to a certain temperature and discharge it to the outside through a pump. Meanwhile, the specific structure of the humidifying module (400) will be described later.

The moisture supply pipe (510) connects the heating module (300) and the humidifying module (400) and supplies the sterilized water heated in the heating module (300) to the humidifying module (400). In particular, the moisture supply pipe (510) of the present invention is provided adjacently along the longitudinal direction of the suction pipe (200). Here, the moisture supply pipe (510) being provided adjacently along the longitudinal direction of the suction pipe (200) may mean that the moisture supply pipe (510) is provided adjacently parallel to the direction forming the length of the suction pipe (200), but may also mean that the moisture supply pipe (510) is provided adjacently for a certain length of the suction pipe (200) although not parallel to the direction forming the length of the suction pipe (200).

Accordingly, the respiratory gas passing through the intake pipe (200) can be heated by the effect of the heated sterilized water passing through the moisture supply pipe (510). At this time, for effective heating of the respiratory gas, the moisture supply pipe (510) is preferably formed in a tube shape having a smaller diameter than the intake pipe (200) and is wound around the intake pipe (200) by a predetermined length, and as shown in FIG. 2, it is more preferably wound from one end of the intake pipe (200) through which the respiratory gas flows in to the other end of the intake pipe (200) through which the respiratory gas flows out. Since this moisture supply pipe (510) has a large contact area with the intake pipe (200), it can effectively heat the respiratory gas passing through the intake pipe (200).

Meanwhile, the heated sterilized water supplied to the humidifying module (400) through the moisture supply pipe (510) may be completely vaporized in the humidifying module (400) and replenish the respiratory gas. However, it is preferable to ensure continuous movement of the sterilized water through the moisture supply pipe (510) for effective heating of the respiratory gas. In this case, only a portion of the sterilized water supplied to the humidifying module (400) is vaporized and replenish the respiratory gas, and the remaining sterilized water will remain in the humidifying module (400). Therefore, it is preferable to utilize the remaining sterilized water. Accordingly, the present invention may further include a moisture recovery pipe (520) for utilizing the remaining sterilized water.

The moisture recovery pipe (520), as illustrated in FIG. 2, connects the heating module (300) and the humidifying module (400) and allows the remaining sterilized water in the humidifying module (400) to be recovered to the heating module (300). The moisture recovery pipe (520), like the moisture supply pipe (510), may be provided adjacent to the length of the intake pipe (200), so that the respiratory gas passing through the intake pipe (200) may be heated by the influence of the heated sterilized water passing through the moisture recovery pipe (520) as well as the moisture supply pipe (510).

At this time, for effective heating of the respiratory gas, it is preferable that the moisture recovery pipe (520) be formed in a pipe shape having a smaller diameter than the intake pipe (200) and be wound around the intake pipe (200) by a predetermined length, and as illustrated in FIG. 2, it is more preferable that it be wound from one end of the intake pipe (200) through which the respiratory gas flows in to the other end of the intake pipe (200) through which the respiratory gas flows out. Since this moisture recovery pipe (520), like the moisture supply pipe (510), has a large contact area with the intake pipe (200), it can effectively heat the respiratory gas passing through the intake pipe (200). In addition, when both the moisture supply pipe (510) and the moisture recovery pipe (520) are wound around the intake pipe (200), it is preferable that the moisture supply pipe (510) and the moisture recovery pipe (520) are wound around the intake pipe (200) from one end to the other so that they are arranged alternately. Accordingly, the water supply pipe (510) and the water recovery pipe (520) can be wound around the intake pipe (200) without mutual interference, so that the sterilized water passing through it can heat the respiratory gas.

As described above, in the present invention, the respiratory gas passing through the intake tube (200) is heated to a predetermined temperature by the heated sterilized water passing through the moisture supply pipe (510), and the moisture of the heated sterilized water is supplemented to the heated respiratory gas in the humidifying module (400), so that the respiratory gas having the optimal humidity and temperature can be provided to the patient. In addition, since the remaining sterilized water in the humidifying module (400) returns to the heating module through the moisture recovery pipe (520) and is reused, the respiratory gas having the optimal humidity and temperature can be provided to the patient for a long time without continuous supply of sterilized water. Since the present invention does not use a heating wire in heating the respiratory gas to a predetermined temperature, there is no risk of electromagnetic waves.

Meanwhile, looking specifically at the humidifying module (400) of the present invention, the humidifying module (400) may be equipped with a humidifying filter (410) inside the humidifying body to supplement moisture to the respiratory gas passing through it.

Specifically, as shown in FIGS. 3 to 5, the humidifying body is formed in a cylinder shape and can be arranged so as to lie down, and for example, can be formed in a cylindrical or polygonal cylinder shape. In addition, the shape of the humidifying body can vary depending on the shape of the humidifying filter (410) provided inside, but is not necessarily limited thereto. The following description is made on the premise that the humidifying body of the present invention is in a square cylinder shape.

And, as illustrated in FIGS. 3 and 4, the humidifying main body may be formed with a gas inlet (420) through which respiratory gas is introduced at one end, and a gas outlet (430) through which humidified respiratory gas is discharged at the other end. That is, the respiratory gas introduced into the interior of the humidifying main body through the gas inlet (420) is replenished with moisture by the humidifying filter (410) and discharged to the outside of the humidifying main body through the gas outlet (430). One end and the other end of the humidifying main body may be formed to have a width that gradually narrows toward the outside for smooth movement of gas, and the gas inlet (420) and the gas outlet (430) may be formed to protrude outward from a point having the narrowest width.

For example, for convenience of production and assembly, the humidifier body may be configured to include a first humidifier body (400a), a second humidifier body (400b), a first cover body (400c), and a second cover body (400d), as shown in FIGS. 3 to 5. The first humidifier body (400a) may be formed to include the other end of the humidifier body in which a gas outlet (430) is protruded, and a side wall forming a side surface of the humidifier body. That is, the first humidifier body (400a) may have a frame shape that is open at the top and bottom so that a humidifier filter (410) can be positioned inside.

The second humidifying body (400b) may be formed to include one end of the humidifying body from which the gas inlet (420) is protruded, and may be combined or attached to the first humidifying body (400a). In addition, a bacterial filter (480) may be provided at a point of the second humidifying body (400b) adjacent to the first humidifying body (400a). For example, the bacterial filter (480) may be formed in a plate shape, and a filter receiving protrusion may be formed along the inner side of the edge of the second humidifying body (400b) so that the bacterial filter (480) may be received on the inside. Accordingly, before the respiratory gas introduced through the gas inlet (420) connected to the intake pipe (200) is replenished with moisture by the humidifying filter (410), fine dust components such as dust and bacteria contained therein may be filtered out by the bacterial filter (480).

And, in the second humidifying body (400b), a moisture inlet (460) for connecting to the moisture supply pipe (510) and a moisture outlet (470) for connecting to the moisture recovery pipe (520) may be formed protrudingly. However, the moisture inlet (460) and/or the moisture outlet (470) do not necessarily have to be formed in the second humidifying body (400b), and may be formed in the first humidifying body (400a), the first cover body (400c), and the second cover body (400d). In addition, the moisture inlet (460) may be formed in the lower part of the humidifying body, and the moisture outlet (470) may be formed in the upper part of the humidifying body, or conversely, the moisture inlet (460) may be formed in the upper part of the humidifying body, and the moisture outlet (470) may be formed in the lower part of the humidifying body.

The first cover body (400c) may be formed to include a side wall forming the lower surface of the humidifying body, and is configured to seal the open lower side of the first humidifying body (400a). In addition, the second cover body (400d) may be formed to include a side wall forming the upper surface of the humidifying body, and is configured to seal the open upper side of the first humidifying body (400a).

In the specific example of the humidifying module described above, it is described/illustrated that one humidifying filter (410) is provided inside the humidifying body (100), but multiple humidifying filters (200) may be provided inside the humidifying body (100).

The humidifying filter (410) is provided inside the humidifying body and can be configured to naturally vaporize sterilized water. Accordingly, the humidifying filter (410) can be made of materials such as polyester, 3D mesh, etc. for easy natural vaporization, but is not limited thereto and can be made of various materials for effective natural vaporization. In addition, the humidifying filter (410) can be made of various shapes considering the shape of the humidifying body and the installation structure within the humidifying body.

For example, the humidifying filter (410) may be provided apart from the side wall of the humidifying body so that a passage (440) is formed between the side wall connecting one end and the other end of the humidifying body. Accordingly, the sterilized water to be vaporized in the humidifying filter (410) may be introduced into the humidifying body through the moisture supply pipe (510) connected to the moisture inlet (460) and supplied to the passage (440), and may move along the passage (440) and wet the humidifying filter (410) from multiple directions, thereby increasing the humidifying effect.

In order to ensure that the humidifying filter (410) is spaced apart from the side wall of the humidifying main body, if the humidifying main body is formed in a square tube shape with the side walls formed as an upper surface, a lower surface, and two side surfaces, as illustrated in FIGS. 3 and 5, a flow path-forming wall (450) may be provided on the inner side of the side walls forming the two side surfaces at a predetermined distance from the corresponding side walls to form a flow path (440). For example, a flow path-forming wall (450) may be formed on the inner side of the side wall of the first humidifying main body (400a), so that a flow path (440) through which sterilized water can move may be formed between the corresponding side wall and the flow path-forming wall (450). At this time, the flow path-forming wall (450) and the side wall adjacent thereto may be connected through a gap-maintaining piece (451) so that the flow path (440) formed therebetween may maintain a certain shape.

It is preferable that the flow path forming wall (450) formed in the first humidifying body (400a) be formed so as to be spaced apart from the first cover body (400c) and the second cover body (400d), so as to form a flow path (440) between the side walls forming the upper and lower surfaces of the humidifying body and the humidifying filter (410). Accordingly, as in the example illustrated in FIG. 5, the sterilizing water supplied through the flow path (440) formed between the side walls forming the lower surface of the humidifying body and the humidifying filter (410) wets the lower side of the humidifying filter (410), and also moves through the flow path (440) formed between the side walls forming the side surface of the humidifying body and the humidifying filter (410) to the flow path (440) formed between the side walls forming the upper surface of the humidifying body and the humidifying filter (410), so as to wet the upper side of the humidifying filter (200).

In order for the humidifying filter (410) to be firmly fixed in a state spaced apart from the side walls of the humidifying body having a rectangular cylinder shape and a flow-forming wall (450), as shown in FIGS. 4 and 5, the humidifying filter (410) is adjacent to the flow-forming wall (450) facing each other while forming a rectangular cylinder shape, and the upper and lower surfaces thereof can be extended outward and attached to the upper and lower ends of the flow-forming wall (450) and fixed.

As described above, the humidifying module (400) of the present invention can supply moisture to respiratory gas by naturally vaporizing sterilized water through the humidifying filter (410), and therefore, since power for humidification is not required, respiratory gas containing sufficient moisture can be provided to patients even in external locations where power supply is difficult, and the problem of power shortage can be resolved when using ambulances, emergency helicopters, etc.

Meanwhile, the present invention may further include a branch pipe (600) for supplying respiratory gas having optimal humidity and temperature to the patient, and an exhaust pipe (700) for allowing exhaust gas including carbon dioxide exhaled by the patient to flow into the respirator (100).

The branch pipe (600) is connected to the patient at one end, and has an inlet and an exhaust port formed at the other end branched into two, and may be formed in the shape of a 'Y' pipe, for example. Accordingly, the inlet may be connected to the other end of the humidifying module (400), and the respiratory gas that has entered the branch pipe (600) through the inlet is supplied to the patient through one end, and as the patient exhales, the exhaust gas that has entered the branch pipe (600) through one end moves through the exhaust port to the exhaust pipe (700) that is connected to the exhaust port.

The exhaust pipe (700) is in the form of a tube having a predetermined length, one end of which is connected to the ventilator (100), and the other end is connected to the exhaust port of the branch pipe (600). Accordingly, the exhaust gas generated from the patient passes through the branch pipe (600) and moves along the exhaust pipe (700) toward the ventilator (100).

And the intake pipe (200), the branch pipe (600), and the exhaust pipe (700) may be made of a hard material, but for convenience of use, the whole or a part may be made of a soft material, or the whole or a part may be made of a structure that can be bent. For example, the intake pipe (200) and the exhaust pipe (700) may have both ends connected to other components made of a hard material, and the remaining portion may be made of a soft material. As another example, the intake pipe (200) and the exhaust pipe (70) may have a wrinkled structure in which the remaining portions except for both ends can be bent and the length thereof can be increased or decreased.

The respiratory circuit device for an artificial respirator according to the present invention described above is simplified compared to conventional respiratory circuit devices, and thus is convenient to use in narrow spaces or when moving, and reduces the burden on medical staff or caregivers in responding to emergency situations and managing respiratory circuits, and not only is there less concern about leakage due to a reduction in connecting parts between components, but also gas turbulence is reduced, so that rectified gas can be provided to a patient. In addition, since the generation of condensate is significantly reduced, malfunctions due to clogging of sensor lines or increased resistance caused by condensate can be prevented, and the use of sterilizing water can be reduced through effective moisture management such as prevention of excessive moisture.

100 : respirator 200 : inhalation tube
300: Heating module 400: Humidifying module
400a: 1st humidifier body 400b: 2nd humidifier body
400c: 1st cover body 400d: 2nd cover body
410: Humidifying filter 420: Gas inlet
430 : Gas outlet 440 : Euro
450: Euro-forming wall 451: Spacing maintenance piece
460: Water inlet 470: Water outlet
480 : Bacteria Filter

Claims (5)

An inhalation tube (200) through which respiratory gas generated from a respirator (100) connected to one end is moved toward the patient;
A humidifying module (400) provided at the other end of the intake pipe (200) and supplied with sterilized water heated by the heating module (300) to supplement moisture to the respiratory gas passing through the intake pipe (200); and
A water supply pipe (510) is included, which connects the heating module (300) and the humidifying module (400) and supplies the sterilized water heated in the heating module (300) to the humidifying module (400).
The above moisture supply pipe (510) is provided so as to be wound from one end of the suction pipe (200) to the other end along the length of the suction pipe (200), so that the respiratory gas passing through the suction pipe (200) is heated by the effect of the heated sterilized water passing through the moisture supply pipe (510).
It further includes a water recovery pipe (520) that connects the heating module (300) and the humidifying module (400) and allows the remaining sterilized water in the humidifying module (400) to be recovered to the heating module (300).
A breathing circuit device for an artificial respirator, characterized in that the moisture supply pipe (510) and the moisture recovery pipe (520) are wound from one end to the other end of the intake pipe (200) so as to be arranged alternately. In the first paragraph,
The above humidifying module (400) is a respiratory circuit device for an artificial respirator, characterized in that it has a humidifying filter (410) provided inside to naturally vaporize heated sterilized water supplied through a water supply pipe (510). delete delete delete

Images