Respiratory assist device

Abstract

The present invention relates to a respiratory assist device comprising: a main body which has a heating plate provided at the upper part thereof; a chamber unit which detachably couples to the upper part of the main body, and which stores distilled water therein; and a circuit unit which connects to the chamber unit to guide a heated / humidified breathing gas to a patient, wherein a guide frame is provided at the upper part of the main body, the guide frame defining a fitting groove, into which the chamber unit is fitted, and restricting the forward / backward sliding movement and the upward / downward movement of the chamber unit.

Description

respiratory assist device

[0001] The present invention relates to a respiratory assistance device configured to supply respiratory gas having an appropriate temperature and humidity to a patient or the elderly to assist stable breathing.

[0002] In general, surgical patients requiring anesthesia, critically ill patients, or elderly patients who have difficulty breathing on their own are forced to breathe through a ventilator. However, the respiratory gas (anesthetic, oxygen, etc.) supplied to the patient through the ventilator has the problem of causing other side effects because the temperature and humidity are low.

[0003] To elaborate, the respiratory gas inhaled by a patient through a ventilator is not only cold enough to chill the patient, but also dehydrates the patient's airways and lungs due to its dryness. Furthermore, as the respiratory gas supplied from the ventilator condenses within the tube as it passes through it, the water droplets formed within the tube can be directly inhaled into the patient's lungs, potentially causing other health problems, such as dryness, ulcers, mucus plug formation, and mucociliary dysfunction in the patient's bronchial mucosa.

[0004] Currently, respiratory assistance devices are being used to appropriately control the temperature of the respiratory gas supplied from the ventilator to solve the above problems.

[0005] A respiratory assistance device warms and humidifies the respiratory gas generated from a ventilator so that the patient can receive respiratory gas at an appropriate temperature and humidity.

[0006] However, since conventional respiratory assistance devices have a configuration that controls the humidity of respiratory gas by vaporizing distilled water stored in a chamber through ultrasonic vibration, there is a problem that when the respiratory assistance device is used for a long time or, conversely, when it is not used for a long time, the distilled water stored in the chamber becomes contaminated and causes germs or bacteria to occur.

[0007] In addition, there is a problem that the inner surface of the chamber is worn out because the distilled water stored in the chamber repeatedly collides with the inner surface of the chamber in the form of numerous water droplets due to the water splashing phenomenon caused by ultrasonic vibration.

[0008] In addition, since the degree of steam generation varies depending on the shape of the water level stored in the chamber in the humidity control method using ultrasonic vibration, when the breathing assistance device is placed on an inclined floor, the shape of the water level changes, and not only cannot control the humidity of the breathing gas to the set value, but also the water level detection bladder provided in the chamber does not function properly, causing a problem in that distilled water is supplied in excess of what is needed or is not supplied when needed.

[0009] Therefore, recently, a method of controlling the temperature and humidity of the respiratory gas by heating distilled water stored in the chamber has been used.

[0010] A respiratory assistance device using a heating method is configured to include a main body provided with a heating plate and a chamber detachably connected to the main body, but has a structure that makes it difficult for a user to accurately connect the chamber to a set position of the main body, and also has a problem in that the user has difficulty in determining whether the chamber is accurately connected to the set position of the main body, and thus has to monitor the operating status for a long time.

[0011] Meanwhile, existing respiratory assistance devices are configured to include a suction tube that guides respiratory gas by connecting a chamber and a breathing mask worn on the patient's mouth.

[0012] A heating element for heating the respiratory gas is provided inside the above suction tube. In addition, a sensor unit for detecting the temperature / humidity of the respiratory gas is detachably mounted on the above suction tube while connected to a power cable.

[0013] In view of the above configuration, conventional respiratory assistance devices have a problem in that they are configured to include a power cable that supplies power to a heating wire and another power cable equipped with the above-mentioned section as separate components, requiring users such as nurses to take care of each power cable and then connect them to the suction tubes.

[0014] In addition, the power cables not only detract from the aesthetic appeal of the patient's room, but also restrict the range of movement of the patient's family or the user, and more seriously, there is a problem of them being separated from the suction tube due to interference with unintended movements of the patient's family or the user.

[0015] In addition, since the above power cables are very expensive and are consumables, there is a problem of increasing the financial burden on users and patients.

[0016] Accordingly, the applicant of the present invention proposed the present invention to solve the above-mentioned problems, and a related prior art document is 'Medical automatic temperature and humidity controller with anti-condensation function' of Korean Patent No. 10-1479545.

[0017] The present invention is intended to solve the above problems, and the purpose of the present invention is to provide a breathing assistance device configured so that a user can easily and accurately attach a water chamber to a set position of the main body.

[0018] In addition, the present invention aims to provide a breathing assistance device configured to accurately guide a user to the level of distilled water stored in a water chamber by multi-checking the level of distilled water in a contact manner and a non-contact manner even when the water chamber is moved by an external environment.

[0019] In addition, the present invention aims to provide a respiratory assistance device that provides convenience of storage and installation to the user by providing a circuit that is easy to install and simplified.

[0020] The present invention is a respiratory assistance device comprising: a main body having a heating plate provided on the upper portion; a chamber portion detachably coupled to the upper portion of the main body and storing distilled water therein; and a circuit portion connected to the chamber portion to guide heated / humidified respiratory gas to a patient; wherein a guide frame defining a mounting groove in which the chamber portion is mounted and restricting forward / backward sliding movement and up / down movement of the chamber portion may be provided on the upper portion of the main body.

[0021] Additionally, the guide frame may be arranged along a portion of the circumference of the heating plate on the upper portion of the heating plate exposed to the upper surface of the main body.

[0022] Additionally, a side groove that can communicate with the mounting groove may be formed between the bottom surface of the guide frame and the top surface of the main body.

[0023] In addition, the chamber portion may include a water chamber that is seated in the seat groove and stores distilled water; a heat-conducting plate provided at a lower portion of the water chamber and in contact with the heating plate; and a cover provided along the circumferential direction of the heat-conducting plate and detachably coupled to the guide frame.

[0024] In addition, the cover may include a first circumferential member provided along the side and rear circumferences of the water chamber and inserted into the side groove to be detachably coupled with the guide frame; and a second circumferential member provided along the front circumference of the water chamber while connected to the first circumferential member, and exposed to the outside of the mounting groove when the first circumferential member is inserted into the side groove.

[0025] Additionally, a step surface that comes into contact with a stopper surface formed on the guide frame may be formed at the connection point between the first circumferential member and the second circumferential member.

[0026] In addition, a fastening protrusion may be formed on the upper surface of the first circumferential member, and a fastening groove into which the fastening protrusion can be inserted may be formed on the lower surface of the guide frame.

[0027] In addition, the heating plate is provided in the main body while being supported by an elastic means provided inside the main body, and can move toward the inside of the main body when an external force is applied by a user to the second circumferential member or the water chamber.

[0028] In addition, a magnetic detection sensor may be provided on the inside of the main body to detect the magnetism of a magnet provided on the bottom surface of the second peripheral member when the first peripheral member is inserted into the side groove, thereby confirming whether the first peripheral member and the guide frame are fastened.

[0029] Additionally, a valve may be provided inside the water chamber to open and close the distilled water supply pipe in response to the level of the distilled water.

[0030] In addition, the baffle may include a floating member that is disposed at the lower portion of the internal space formed by the water chamber and is capable of floating by distilled water filled in the internal space; an opening / closing portion that blocks the distilled water supply pipe when the floating member rises and opens the distilled water supply pipe when the floating member descends; and a link portion that connects the opening / closing portion and the floating member to each other.

[0031] In addition, the distilled water supply pipe may include a first channel that is communicatively connected to a distilled water supply port provided on the upper surface of the water chamber; and a second channel that is communicatively connected to the first channel and has an inner diameter smaller than the inner diameter of the first channel.

[0032] In addition, the opening / closing unit may include: a head member arranged in the first flow path; an elevating rod integrally connected to the head member while forming an outer diameter smaller than the outer diameter of the head member, and having a portion of the lengthwise direction arranged in the second flow path; and a sealing member arranged in the first flow path while being provided at a connection point between the elevating rod and the head member, and opening / closing a communication point between the first flow path and the second flow path.

[0033] In addition, the link portion may include a first connecting member having a lower end connected to the upper surface of the floating member and an upper end extending upwardly in an inclined manner and rotatably connected to the lower end of the lifting rod; and a second connecting member protruding upward from a longitudinal middle portion of the first connecting member and having an upper end rotatably connected to the lower end of a support frame arranged on one side of the distilled water supply pipe.

[0034] In addition, it includes a protruding frame that is integrally connected to the guide frame and comes into contact with the rear surface of the water chamber when the water chamber is seated in the seating groove, and a non-contact detection sensor that detects the water level of distilled water filled in the water chamber can be built into the protruding frame.

[0035] In addition, the circuit unit may include a suction tube having one longitudinal end communicatively connected to the water chamber and delivering heated / humidified respiratory gas to the patient; a branching portion having the other longitudinal end of the suction tube communicatively connected and a respiratory mask worn by the patient; and an exhaust tube having one longitudinal end communicatively connected to the branching portion and the other longitudinal end thereof connected to a respirator to guide gas generated after the patient's breathing to the respirator.

[0036] In addition, the circuit unit may further include a heating wire for heating the respiratory gas and a sensor unit for detecting the temperature and humidity of the respiratory gas.

[0037] Additionally, the heating wire can sequentially pass through the suction tube, the branch section, and the discharge tube.

[0038] Additionally, the heating wire may be provided inside the suction tube or the discharge tube in a spiral shape.

[0039] In addition, the branch section may include a main pipe that is communicatively connected to the breathing mask; a first guide pipe that branches off from the main pipe and is communicatively connected to the other longitudinal end of the suction tube; and a second guide pipe that branches off from the main pipe and is communicatively connected to one longitudinal end of the discharge tube.

[0040] In addition, it further includes a connecting portion that connects the longitudinal other end of the suction tube and the first guide tube so that they can be communicated with each other; and the sensor portion and a fixing portion that supports the sensor portion can be arranged inside the connecting portion.

[0041] In addition, the connecting portion includes an insertion tube inserted into the longitudinal other end of the suction tube; and a receiving tube that is communicatively connected to the insertion tube and has an outer diameter and an inner diameter larger than the outer diameter and inner diameter of the insertion tube; and the first guide tube can be inserted into the receiving tube.

[0042] Additionally, the length of the first guide tube inserted into the receiving tube may be shorter than the length of the receiving tube.

[0043] In addition, the fixed part can be placed in a space between one longitudinal end of the first guide tube inserted into the receiving tube and a step surface formed at a connection point between the insertion tube and the receiving tube.

[0044] In addition, the fixing member includes a pair of curvature members that are arranged at a predetermined interval from each other inside the receiving tube and form a curvature corresponding to the inner curvature of the receiving tube; a connecting member that connects longitudinal ends of the pair of curvature members to each other; and a fastening member that is arranged at a distance from the connecting member and connects longitudinal ends of the pair of curvature members to each other; and the sensor unit can be detachably coupled to the fastening member.

[0045] Additionally, the above-mentioned curvature member can be in contact with the inner surface of the receiving tube.

[0046] In addition, the fastening member may include a pair of vertical members formed to extend in the direction in which the connecting member is arranged from the longitudinal other end of the curved member; a horizontal member that connects the pair of vertical members to each other and defines a 'ㄷ' shaped groove in which the sensor part can be seated in cooperation with the pair of vertical members; and a hook that protrudes from the vertical member and prevents the sensor part seated in the groove from being detached.

[0047] In addition, it may include a connecting portion that connects one longitudinal end of the suction tube and the discharge port of the water chamber so as to be communicatively connected to each other, and is connected to a power cable to supply power to the heating wire and the sensor portion.

[0048] A respiratory assistance device according to one embodiment of the present invention has a configuration that allows a user to intuitively feel whether a water chamber is accurately installed in a set position of the present invention and also guides the user through a detection sensor using a magnet, thereby providing convenience in the installation process to nurses or the elderly, and in particular, enabling heat generated from a heating plate to be transferred intact to a heat conducting plate.

[0049] In addition, the respiratory assistance device according to one embodiment of the present invention can prevent safety accidents such as burns from a heat-conducting plate by allowing the user to use a cover provided around the water chamber during the process of separating the water chamber mounted on the main body, and allows the user to easily separate the water chamber from the main body with a simple operation.

[0050] In addition, the respiratory assistance device according to one embodiment of the present invention has a baffle that opens and closes a distilled water supply pipe in response to the level of distilled water stored in a water chamber, and further has a non-contact detection sensor that comes into contact with the rear of the water chamber to detect the level of distilled water, thereby enabling a user to accurately determine the quantitative level of distilled water through multi-check using a contact method and a non-contact method.

[0051] In addition, the respiratory assistance device according to one embodiment of the present invention provides a configuration in which a heating wire is arranged in a spiral shape inside an inhalation tube through which respiratory gas passes, thereby providing respiratory gas having a temperature that is easy for the patient to breathe.

[0052] In addition, the respiratory assistance device according to one embodiment of the present invention provides a fixing part that is detachably provided inside the connecting part while supporting a sensor part that measures the temperature and humidity of respiratory gas, thereby providing convenience in replacing and repairing the sensor part and preventing the sensor part from moving due to external force.

[0053] Figure 1 is a drawing showing the configuration of a respiratory assistance device according to one embodiment of the present invention.

[0054] Figure 2 is a perspective view of a main body according to one embodiment of the present invention.

[0055] Fig. 3 is a cross-sectional view of the main body shown in Fig. 2 viewed from the side.

[0056] Figure 4 is a perspective view of a chamber portion according to one embodiment of the present invention.

[0057] Fig. 5 is a cross-sectional view of the chamber portion illustrated in Fig. 4 viewed from the side.

[0058] Figure 6 is a perspective view of a bure according to one embodiment of the present invention.

[0059] Fig. 7 is a cross-sectional view showing a state in which the distilled water supply pipe is blocked by the operation of the bure illustrated in Fig. 5.

[0060] Fig. 8 is a bottom perspective view showing the bottom of the chamber portion illustrated in Fig. 4.

[0061] Figure 9 is a perspective view of a chamber portion and a main body according to one embodiment of the present invention.

[0062] Fig. 10 is a perspective view showing a state in which a chamber part according to one embodiment of the present invention is mounted on a main body.

[0063] Fig. 11 is a perspective view of a circuit unit according to one embodiment of the present invention.

[0064] Fig. 12 is an exploded perspective view of a circuit portion according to one embodiment of the present invention.

[0065] Fig. 13 is a cross-sectional view of the circuit section shown in Fig. 11 viewed from the front.

[0066] Fig. 14 is a perspective view of a fixing member according to one embodiment of the present invention.

[0067] Fig. 15 is a cross-sectional view showing a state in which a fixing part and a sensor part are arranged inside a receiving tube according to one embodiment of the present invention.

[0068] Fig. 16 is a drawing of the inside of the suction tube and the discharge tube viewed in the direction of arrow A shown in Fig. 15 along the cut line with the branch shown in Fig. 15 removed.

[0069] The advantages and features of the present invention and the methods for achieving them will become clear with reference to the embodiments described in detail below together with the accompanying drawings.

[0070] However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and these embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform a person having ordinary skill in the art to which the present invention pertains of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0071] Hereinafter, a respiratory assistance device according to one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 16. In describing the present invention, specific descriptions of related known functions or configurations are omitted to avoid obscuring the gist of the invention.

[0072] FIG. 1 is a drawing showing the configuration of a respiratory assistance device according to an embodiment of the present invention, FIG. 2 is a perspective view of a main body according to an embodiment of the present invention, FIG. 3 is a cross-sectional view of the main body shown in FIG. 2 when viewed from the side, FIG. 4 is a perspective view of a chamber part according to an embodiment of the present invention, FIG. 5 is a cross-sectional view of the chamber part shown in FIG. 4 when viewed from the side, FIG. 6 is a perspective view of a bladder according to an embodiment of the present invention, FIG. 7 is a cross-sectional view showing a state in which a distilled water supply pipe is blocked by the operation of the bladder shown in FIG. 5, FIG. 8 is a bottom perspective view showing the bottom of the chamber part shown in FIG. 4, FIG. 9 is a perspective view of a chamber part and a main body according to an embodiment of the present invention, FIG. 10 is a perspective view showing a state in which the chamber part is mounted on the main body according to an embodiment of the present invention, FIG. 11 is a perspective view of a circuit part according to an embodiment of the present invention, FIG. 12 is an exploded perspective view of the circuit part according to an embodiment of the present invention, and FIG. 13 is a perspective view of the circuit part shown in FIG. 11. This is a cross-sectional view of the circuit unit viewed from the front, FIG. 14 is a perspective view of a fixing unit according to one embodiment of the present invention, FIG. 15 is a cross-sectional view showing a state in which a fixing unit and a sensor unit are arranged inside a receiving tube according to one embodiment of the present invention, and FIG. 16 is a view of the inside of the suction tube and the discharge tube viewed in the direction of arrow A shown in FIG. 15 along the cutting line with the branch unit shown in FIG. 15 removed.

[0073] For reference, this project is the result of a local government-university collaboration-based regional innovation project (2021RIS-001), funded by the Ministry of Education and supported by the National Research Foundation of Korea in 2024.

[0074] This research was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(MOE)(2021RIS-001)

[0075] As illustrated in FIGS. 1 to 3, a respiratory assistance device (100) according to one embodiment of the present invention may largely include a main body (200) having a heating plate (210) provided at an upper portion thereof; a chamber portion (300) detachably provided at an upper portion of the main body (200) and storing distilled water therein; and a circuit portion (400) connected to the chamber portion (300) to guide heated / humidified respiratory gas to a patient.

[0076] First, the main body (200) is preferably formed in a shape that can be stably placed on the floor surface, as shown in FIGS. 2 and 3, and is preferably manufactured in a weight and volume that allows the user to easily transport and store it.

[0077] On the front upper surface of the main body (200), various control buttons, including a power button, may be provided, and a display may be provided to display the temperature, alarm, various status modes, etc. of the circuit unit (400) to the user.

[0078] Inside the main body (200), a known PCB that is connected to various control buttons and controls the heating plate (210) and display, etc. may be provided.

[0079] The upper surface of the heating plate (210) may be placed on the rear side of the upper surface of the main body (200). That is, the upper surface of the heating plate (210) is exposed to the outside from the upper surface of the main body (200) and may be in surface contact with the lower surface of the chamber portion (300) described later.

[0080] In addition, a guide frame (220) may be provided on the upper rear surface of the main body (200) to simultaneously define a mounting groove (S1) in which a chamber part (300) to be described later is mounted, and a side groove (S2) to prevent the chamber part (300) mounted on the main body (200) from moving.

[0081] The guide frame (220) may be formed to protrude from the upper edge of the main body (200) at a predetermined height so that the upper surface of the heating plate (210) can be exposed to the outside. For reference, the guide frame (220) may have a 'ㄷ' shaped plane when the main body (200) is viewed from a flat surface.

[0082] Additionally, the upper portion of the inner surface of the guide frame (220) may be formed to protrude a predetermined length toward the direction in which the heating plate (210) is placed.

[0083] Accordingly, a side groove (S2) in which a cover (330) of a chamber portion (300) to be described later is mounted can be formed between the inner surface of the guide frame (220) and the upper surface of the main body (200).

[0084] In detail, the guide frame (220) can define a mounting groove (S1) on the upper surface of the main body (200) in which the chamber part (300) can be mounted, and at the same time define a side groove (S1) that is formed along the circumference of the mounting groove (S1) and is connected to the mounting groove (S1) so as to be communicable with the mounting groove (S1).

[0085] Meanwhile, the heating plate (210) may be provided in the main body (200) while being supported by an elastic means (not shown) provided inside the main body (200).

[0086] That is, the lower portion of the heating plate (210) can be supported by a known elastic means (not shown), such as an elastic spring. Accordingly, when an external force is applied to the upper surface of the heating plate (210), it can move toward the inside of the main body (200).

[0087] The above heating plate (210) can elastically press upward the bottom surface of the chamber part (300) when the chamber part (300) is seated in the seating groove (S1) of the main body (200).

[0088] In detail, when the chamber part (300) to be described later is seated in the seat groove (S1), the heating plate (210) is supported by an elastic means and presses the bottom surface of the heat-conducting plate (320, see FIGS. 5 and 8) constituting the chamber part (300) with a predetermined pressure.

[0089] Then, the heating plate (210) and the heat conducting plate (320, see FIGS. 5 and 8) can be in close contact with each other. Accordingly, the heat generated from the heating plate (210) can be completely transferred to the heat conducting plate (320, see FIGS. 5 and 8).

[0090] In addition, since the heating plate (210) presses upward the bottom surface of the heat conducting plate (320, see FIGS. 5 and 8) at a predetermined pressure, the upper surface of the first peripheral member (331, see FIG. 4) constituting the chamber portion (300) is in close contact with the bottom surface of the guide frame (220), thereby further preventing the flow of the chamber portion (300).

[0091]

[0092] The chamber part (300) may include, as shown in FIGS. 4, 5, and 8, a water chamber (310) that is seated in the seating groove (S1) and stores distilled water; a heat-conducting plate (320) provided at the lower portion of the water chamber (310) and in contact with the heating plate (210); and a cover (330) provided along the circumferential direction of the heat-conducting plate (320) and detachably coupled to the guide frame (220).

[0093] The above water chamber (310) forms an internal space in which distilled water can be stored.

[0094] A distilled water supply port (311) connected to a tube (see Fig. 1) that delivers distilled water can be formed in the center of the upper surface of the water chamber (310).

[0095] The above distilled water supply port (311) can be connected to a distilled water supply pipe (315) placed inside the water chamber (310).

[0096] In addition, a respiratory gas discharge port (312) that is communicatively connected to the suction tube (410) of the circuit unit (400) described later may be formed on one side of the upper surface of the water chamber (310), and an air inlet port (313) that is communicatively connected to the air tube (11) connected to the artificial respirator (10) may be formed on the other side of the upper surface of the water chamber (310), as illustrated in FIG. 1.

[0097] It is preferable that the water chamber (310) configured as described above be made of a transparent material so that the user can easily check the internal space with the naked eye.

[0098]

[0099] The above heat conduction plate (320) serves to block the open lower part of the water chamber (310) while simultaneously heating the distilled water stored in the internal space of the water chamber (310).

[0100] The heat conducting plate (320) is in contact with the heating plate (210) exposed to the upper surface of the main body (200), and can heat the water inside the water chamber (310) by receiving heat generated from the heating plate (210).

[0101] The heat conducting plate (320) can be made of a known metal material with excellent heat conductivity, and in particular, it is preferable to make it of stainless steel, which is light in weight but has excellent corrosion resistance and durability.

[0102] For reference, a heat-conducting plate (320) made of stainless steel can provide excellent heat conductivity and durability even when manufactured with a relatively small thickness compared to a heat-conducting plate made of aluminum, and can also reduce the overall weight of the chamber portion (300).

[0103]

[0104] The above cover (330) is provided along the circumference of the heat-conducting plate (320) while being coupled to the lower circumference of the water chamber (310), and can be said to be a component that is detachably coupled to the guide frame (220) while being inserted into the side groove (S2) partitioned by the guide frame (220).

[0105] The cover (330) can be considered a component that is held by the user when moving the water chamber (310) and the heat conduction plate (320). In addition, the cover (330) can be made of a plastic material with low thermal conductivity.

[0106] Therefore, the user can safely move the water chamber (310) without being burned by the high-temperature heat-conducting plate (320).

[0107] The above cover (330) is described in more detail as follows.

[0108] As illustrated in FIG. 4, the cover (330) may include a first circumferential member (331) provided along the side and rear circumferences of the water chamber (310) and inserted into the side groove (S2) to be detachably coupled with the guide frame (220); and a second circumferential member (332) provided along the front circumference of the water chamber (310) while connected to the first circumferential member (331), and exposed to the outside of the mounting groove (S1) when the first circumferential member (331) is inserted into the side groove (S2).

[0109] The first peripheral member (331) constituting the cover (330) may have a shape corresponding to the shape of the side groove (S2) partitioned by the guide frame (220).

[0110] In one embodiment of the present invention, as the side groove (S2) is formed in a 'ㄷ' shape, the first peripheral member (331) is also shown in the drawing to have a 'ㄷ' shape.

[0111] The upper surface of the first circumferential member (331) can be in contact with the lower surface of the guide frame (220).

[0112] Accordingly, when the first circumferential member (331) is inserted into the side groove (S2), the sliding movement in a straight direction can be restricted by the closed inner surface of the guide frame (220), and further, the movement in the up / down direction can be restricted by the bottom surface of the guide frame (220).

[0113] As illustrated in FIG. 9, the second circumferential member (332) can be said to be a component that is exposed to the outside of the mounting groove (S1) when the first circumferential member (331) is inserted into the side groove (S2).

[0114] Meanwhile, as illustrated in FIG. 4, a step surface (333) may be formed at the connection point between the first peripheral member (331) and the second peripheral member (332).

[0115] The above step surface (333) is formed by the height difference between the first peripheral member (331) and the second peripheral member (332), and can be in contact with the stopper surface (221) of the guide frame (220) illustrated in FIG. 2.

[0116] The above step surface (333) and the above stopper surface (221) can come into contact with each other when the first peripheral member (331) slides a set distance while being inserted into the side groove (S2).

[0117] Accordingly, the step surface (333) and the stopper surface (221) serve to intuitively guide the user so that the chamber part (300) can slide and move by a set distance. That is, the user can easily confirm that the chamber part (300) has moved by the set distance by feeling the step surface (333) and the stopper surface (221) contact each other.

[0118] Additionally, as illustrated in FIG. 4, a fastening protrusion (331a) may be formed protruding on the upper surface of the first peripheral member (331).

[0119] The fastening projection (331a) formed on the first circumferential member (331) can be inserted into the fastening groove (not shown) formed on the bottom surface of the guide frame (220) when the step surface (333) and the stopper surface (221) come into contact with each other as the first circumferential member (331) is inserted into the side groove (S2).

[0120] Accordingly, the movement of the chamber part (300) mounted on the upper part of the main body (200) can be further prevented by the mutual coupling of the fastening projection (331a) and the fastening groove (not shown).

[0121] For reference, in one embodiment of the present invention, it has been described that a fastening projection (331a) is formed to protrude from the upper surface of the first peripheral member (331), and a fastening groove (not shown) is formed on the lower surface of the guide frame (220) to be coupled with the fastening projection (331), but this is not limited thereto. For example, a fastening projection may be formed to protrude downward from the lower surface of the guide frame (220), and a fastening groove may be formed on the upper surface of the first peripheral member (331).

[0122] Meanwhile, as shown in Fig. 8, a magnet (332a) may be provided on the bottom surface of the second peripheral member (332).

[0123] The above magnet (332a) can be said to be a component detected by a magnetic detection sensor (250, see FIG. 3) provided inside the main body (200).

[0124] In detail, when the first peripheral member (331) of the cover (330) is inserted into the side groove (S2) and moved by a set distance, the magnetic detection sensor (250) provided inside the main body (200) detects the magnet (332a) provided on the bottom surface of the second peripheral member (332) and determines whether the chamber part (300) has slid by the set distance and is mounted in the correct position.

[0125] For reference, the detection signal by the magnetic detection sensor (250) can be displayed on a display placed on the front side of the upper surface of the main body (200) and transmitted to the user.

[0126] Therefore, the user can easily check whether the chamber part (300) is correctly mounted on the upper part of the main body (200) based on the signal displayed on the display.

[0127]

[0128] Hereinafter, with reference to FIGS. 9 and 10, a process in which a chamber part (300) configured as described above is coupled to the upper portion of the main body (200) is described as an example.

[0129] First, the user can preferentially insert the first peripheral member (331) of the cover (330) into the mounting groove (S1) and side groove (S2) through the open inlet formed in the upper part of the main body (200) while holding the second peripheral member (332) or water chamber (310) of the cover (330) by hand.

[0130] Next, the user can slide the second peripheral member (332) or the water chamber (310) in the direction of arrow A shown in FIG. 9 to insert the first peripheral member (331) into the side groove (S2). In this process, the lower surface of the heat-conducting plate (320) applies a predetermined pressure to the upper surface of the heating plate (210), and in conjunction with this, the heating plate (210) can be moved into the main body (200) while pressing an elastic means (not shown) provided on the inside of the main body (200).

[0131] When the first peripheral member (331) is inserted into the side groove (S2), the step surface (333) formed on the cover (330) and the stopper surface (221, see FIG. 2) formed on the side frame (220) can come into contact with each other. At this time, the fastening protrusion (331a) formed on the first peripheral member (331) can be inserted into the fastening groove (not shown) formed on the bottom surface of the guide frame (220).

[0132] Then, the user can intuitively feel that the step surface (333) and the stopper surface (221) are in contact with each other, and at the same time, can easily confirm that the chamber part (300) has slid a set distance by hearing the sound of the fastening projection (331a) being fastened when it is inserted into the fastening groove (not shown).

[0133] In addition, when the chamber part (300) is seated in the seating groove (S1), as described above, since the heating plate (210) is pressed by the elastic means (not shown) to press upward the bottom surface of the heat-conducting plate (320), the upper surface of the first peripheral member (331) inserted into the side groove (S2) can be brought into closer contact with the bottom surface of the guide frame (220) that divides the side groove (S2). At this time, the bottom surface of the second peripheral member (332) is spaced apart from the top surface of the main body (200) by a predetermined distance and is in a non-contact state with the top surface of the main body (200).

[0134]

[0135] Hereinafter, the process of separating the chamber part (300) configured as above from the upper part of the main body (200) is described as an example.

[0136] In order to separate the chamber part (300) coupled to the upper part of the main body (200) from the main body (200), the second peripheral member (332) or the water chamber (310) of the cover (330) exposed to the outside of the mounting groove (S1) can be pulled and slid in the direction of arrow B shown in FIG. 9 while being held by hand.

[0137] Then, the fastening projection (331a) can be detached from the fastening groove (not shown) formed on the bottom surface of the guide frame (220).

[0138] Next, the user can slide the second circumferential member (332) or the water chamber (310) in the direction of arrow B shown in Fig. 9 until the bottom surface of the guide frame (220) and the top surface of the first circumferential member (331) do not contact each other.

[0139] When the above state is reached, the chamber part (300) becomes completely detachable from the upper part of the main body (200). At this time, since the heating plate (210) is in a non-contact state with the lower surface of the heat-conducting plate (320), it can be raised upwards by a predetermined distance by being pressed by the elastic means and exposed to the upper surface of the main body (200).

[0140] As another example, the user can first pressurize the upper surface of the second peripheral member (332) exposed to the outside of the mounting groove (S1) by hand and then slide the water chamber (310) in the direction of arrow B shown in FIG. 9.

[0141] When a user presses the upper surface of the second circumferential member (332) with his / her hand, the lower surface of the second circumferential member (332) and the upper surface of the main body (200) come into contact with each other.

[0142] In addition, due to the external force of the user pressing the second peripheral member (332), a portion of the entire portion of the heat-conducting plate (320), that is, a portion of the heat-conducting plate (320) positioned close to the second peripheral member (332), is lowered to pressurize the heating plate (210).

[0143] Additionally, by the external force of the user pressing the second circumferential member (332), a portion of the length of the first circumferential member (331) positioned close to the second circumferential member (332) may also be lowered.

[0144] When the above state is achieved, a portion of the longitudinal direction of the first peripheral member (331) and the bottom surface of the guide frame (220) are in a non-contact state. In addition, the fastening projection (331a) protruding from the above portion and the fastening groove (not shown) formed on the bottom surface of the guide frame (220) can be separated from each other.

[0145] Accordingly, the user can completely separate the chamber portion (300) from the upper portion of the main body (200) by holding the water chamber (310) while pressing the upper surface of the second circumferential member (332) with his / her hand and sliding it in the direction of arrow B shown in FIG. 9. At this time, since the heating plate (210) is in a non-contact state with the lower surface of the heat-conducting plate (320), it can be raised upward by a predetermined distance under pressure from the elastic means and exposed to the upper surface of the main body (200).

[0146]

[0147] Meanwhile, the chamber part (300) according to one embodiment of the present invention may further include a bure (340), as shown in FIGS. 5 to 7.

[0148] The above-mentioned bure (340) is provided in the internal space of the water chamber (310) and can be said to be a component that opens and closes the distilled water supply pipe (315) in response to the level of distilled water filled in the internal space of the water chamber (340).

[0149] The above-mentioned float (340) may include, as illustrated in FIGS. 5 to 7, a floating member (341) that is disposed at the lower portion of the internal space formed by the water chamber (310) and that can float by distilled water filled in the internal space; an opening / closing portion (342) that blocks the distilled water supply pipe (315) when the floating member (341) rises and opens the distilled water supply pipe (315) when the floating member (341) descends; and a link portion (343) that connects the opening / closing portion (342) and the floating member (341) to each other.

[0150] The above floating member (341) may have a hollow body shape so that it can be easily floated by distilled water, and in particular, its bottom surface may have a slanted shape so that it can be easily floated by distilled water.

[0151] As described above, the opening / closing part (342) can be said to be a component that opens / closes the distilled water supply pipe (315) by the floating member (341).

[0152] For reference, the distilled water supply pipe (315) may include a first flow path (315a) that is communicatively connected to a distilled water supply port (311) provided on the upper surface of the water chamber (310); and a second flow path (315b) that is communicatively connected to the first flow path (315a) and has an inner diameter smaller than the inner diameter of the first flow path (315a).

[0153] The above opening / closing part (342) may include a head member (342a) arranged in a first channel (315a) of a distilled water supply pipe (315); an elevation rod (342b) integrally connected to the head member (342a) while forming an outer diameter smaller than the outer diameter of the head member (342a) and having a longitudinal portion arranged in a second channel (315b) of the distilled water supply pipe (315); and a sealing member (342c) arranged in the first channel (315a) while being provided at a connection point between the elevation rod (342b) and the head member (342a) and opening / closing a communication point between the first channel (315a) and the second channel (315b).

[0154] The head member (342a) has an outer diameter smaller than the inner diameter of the first flow path (315a) and an outer diameter larger than the inner diameter of the hole formed at the connecting point between the first flow path (315a) and the second flow path (315b).

[0155] The longitudinal upper portion of the lifting rod (342b) is integrally connected to the lower surface of the head member (342a) and can be placed in the first flow path (315a) together with the head member (342a).

[0156] The lifting rod (342b) forms an outer diameter smaller than the inner diameters of the first flow path (315a) and the second flow path (315b), and further forms an outer diameter smaller than the inner diameter of the hole formed at the connecting point of the first flow path (315a) and the second flow path (315b).

[0157] Except for the longitudinal upper portion of the lifting rod (342b), the remaining longitudinal portion may be placed in the second passage (315b) or exposed to the outside of the second passage (315b) and placed in the internal space formed by the water chamber (310).

[0158] Additionally, the longitudinal lower end of the lifting rod (342b) can be connected to a link portion (343) to be described later.

[0159] As described above, the sealing member (342c) can be said to be a component that opens and closes the communication point between the first flow path (315a) and the second flow path (315b).

[0160] The sealing member (342c) has a ring shape that surrounds the outer surface of the longitudinal upper side of the lifting rod (342b).

[0161] Additionally, the upper surface of the sealing member (342c) can be in contact with the lower surface of the head member (342a).

[0162] The above link part (343) can be said to be a component that connects the floating member (341) and the opening / closing part (342) to each other and raises / lowers the opening / closing part (342) by the operation of the floating member (341).

[0163] The above link portion (343) may include a first connecting member (343a) having a lower end connected to the upper surface of the floating member (341) and an upper end extending upwardly in an inclined manner so as to be rotatably connected to the lower end of the lifting rod (342b); and a second connecting member (343b) protruding upward from a longitudinal middle portion of the first connecting member (343a) and having an upper end rotatably connected to the lower end of a support frame (314) arranged on one side of the distilled water supply pipe (315).

[0164] The first connecting member (343a) constituting the link portion (343) can have its lower end integrally connected to the upper surface of the floating member (341).

[0165] As described above, the first connecting member (343a) is arranged at an angle in the internal space of the water chamber (341), and its longitudinal lower end is integrally connected to the front side of the upper surface of the floating member (341), and its longitudinal upper end can be rotatably connected to the longitudinal lower end of the lifting rod (342b).

[0166] For reference, the floating member (341) may be placed on the rear side of the internal space formed by the water chamber (341). In addition, the distilled water supply pipe (315) may be placed on the central side of the internal space formed by the water chamber (341).

[0167] Accordingly, the first connecting member (343a) of the link portion (343) is not arranged to be inclined to connect the floating member (341) and the opening / closing member (342) provided in the distilled water supply pipe (315).

[0168] The longitudinal lower end of the second connecting member (343b) may be integrally connected to the longitudinally interrupted portion of the first connecting member (343a). In addition, the longitudinal upper end of the second connecting member (343b) may be rotatably connected to the lower end of a support frame (314) that protrudes from the ceiling surface of the water chamber (310) toward the internal space.

[0169] The second connecting member (343b) enables the floating member (341) to float on a set position. That is, it serves to support the floating member (341) so that the floating member (341) is not floated by distilled water and floats only on the set position.

[0170] In addition, the second connecting member (343b) also functions as a stopper that limits the angle at which the first connecting member (343a) rotates when the floating member (341) is floated by distilled water.

[0171] Meanwhile, the floating member (341), the opening / closing member (342) and the link member (343) constituting the float (340) can be made of plastic material, and among them, the sealing member (342c) constituting the opening / closing member (342) can be made of rubber material.

[0172]

[0173] Hereinafter, the process of the bure (340) configured as above floating in the internal space of the water chamber (310) is described as an example with reference to FIGS. 5 and 7.

[0174] As illustrated in FIG. 5, when the internal space of the water chamber (310) is not filled with distilled water, a horizontal surface (341a) formed horizontally on the bottom surface of the floating member (341) may be in contact with the upper surface of the heat-conducting plate (320). At this time, an inclined surface (341b) formed on a portion of the bottom surface of the floating member (341) is in a non-contact state with the heat-conducting plate (320). For reference, the portion of the bottom surface of the floating member (341) on which the inclined surface (341b) is formed may be a portion of the bottom surface of the floating member (341) facing the front side of the water chamber (310).

[0175] In addition, the lifting rod (342b), head member (342a), and sealing member (342c) of the opening / closing part (342) are supported upward by the first connecting member (343a) to form an elevated state inside the distilled water supply pipe (315).

[0176] Then, since the lower surface of the sealing member (342c) does not come into contact with the communication point of the first flow path (315a) and the second flow path (315b) and opens the hole formed at the communication point, distilled water can be supplied to the internal space of the water chamber (310) through the distilled water supply pipe (315).

[0177] Conversely, as illustrated in FIG. 7, when distilled water is filled in the internal space of the water chamber (310), the lower surface of the floating member (341) may be separated from the upper surface of the heat conduction plate (320) by being pressurized by the distilled water. At this time, since the inclined surface (341b) formed on the lower surface of the floating member (341) is pressurized by the distilled water filled in the internal space of the water chamber (310), the floating member (341) may be easily rotated toward the rear of the water chamber (310) based on the connection point between the second connecting member (343b) and the support frame (314).

[0178] When the above floating member (341) is floated by distilled water, the longitudinal lower end of the first connecting member (343a) also rotates toward the rear of the water chamber (310) together with the floating member (341), and in conjunction with this, the longitudinal upper end of the first connecting member (343) pulls downward the lower end of the lifting rod (342b).

[0179] And, when the internal space of the water chamber (310) is filled with distilled water to a set water level, the head member (342a) and the sealing member (342c) are lowered in the internal space of the first flow path (315a), and at this time, the sealing member (342c) can block the hole formed at the communication point between the first flow path (315a) and the second flow path (315b).

[0180] As described above, when distilled water is filled to the water level set in the internal space of the water chamber (310), the lifting rod (342b) is lowered along with the floating member (341), so the hole formed at the connecting point of the first flow path (315a) and the second flow path (315b) can be blocked by the sealing member (342c).

[0181] The bure (340) having the above configuration and operational relationship can open or block the distilled water supply pipe (315) in response to the level of distilled water filled in the internal space of the water chamber (310), and thus can also function as a sensor that detects the set level of distilled water in a manner of direct contact with the distilled water.

[0182]

[0183] Meanwhile, as shown in FIGS. 2, 3, and 10, a protruding frame (230) may be provided on the main body (200).

[0184] The above protruding frame (230) is integrally connected to the guide frame (220), and can be said to be a component that comes into contact with the rear surface of the water chamber (310) when the water chamber (310) is seated in the seating groove (S1).

[0185] Additionally, a non-contact detection sensor (240) that detects the water level of distilled water filled in the internal space of the water chamber (310) may be built into the protruding frame (230).

[0186] The non-contact detection sensor (240) can be said to be a known water level sensor that measures the water level in a non-contact manner, and can detect when the water level of the distilled water filled in the water chamber (310) reaches a set level or fails to reach the set level, and transmit each signal to a PCB (not shown) provided inside the main body (200).

[0187] The detection signal transmitted to the PCB (not shown) can be displayed on a display provided on the front side of the upper surface of the main body (200). Accordingly, the user can easily determine the water level of the distilled water filled inside the water chamber (310) through the non-contact detection sensor (240) built into the protruding frame (230).

[0188] In this way, the respiratory assistance device (100) according to one embodiment of the present invention can determine the level of distilled water filled in the water chamber (310) using the bladder (340) that is in direct contact with the distilled water, and at the same time, can determine the level of distilled water filled in the water chamber (310) using the non-contact detection sensor (240) that is not in contact with the distilled water, so that the user can accurately determine the level of distilled water filled in the water chamber (310) through double check, and in particular, can continuously and accurately determine the level of distilled water even if either the bladder or the non-contact detection sensor (240) malfunctions or is damaged.

[0189]

[0190] The circuit unit (400) may include, as illustrated in FIG. 1 and FIG. 11 to FIG. 16, a suction tube (410) having one longitudinal end communicatively connected to the water chamber (310) and delivering heated / humidified respiratory gas to a patient; a branch unit (420) having the other longitudinal end of the suction tube (410) communicatively connected and a respiratory mask worn by the patient; and an exhaust tube (430) having one longitudinal end communicatively connected to the branch unit (420) and the other longitudinal end connected to a respirator (10) to guide gas generated after the patient's breathing to the respirator (10).

[0191] For reference, as illustrated in FIG. 1, the respiratory gas generated from the ventilator (10) can flow in the direction of arrow A through the air tube (11) and then flow into the internal space of the water chamber (310) constituting the chamber portion (300).

[0192] The respiratory gas introduced into the internal space of the water chamber (310) can flow in the direction of arrow B through the suction tube (410). In addition, the respiratory gas flowing along the suction tube (410) can be delivered to the patient through the branch section (420) described later.

[0193] Then, the patient can breathe easily using the respiratory gas delivered through the suction tube (410).

[0194] Additionally, the gas generated after the patient breathes can flow in the direction of arrow C through the discharge tube (430). And, the discharged gas flowing along the discharge tube (430) can be delivered to the ventilator (10).

[0195] Here, the suction tube (410) not only delivers respiratory gas to the patient via the water chamber (310), but also heats the respiratory gas so that the patient can receive respiratory gas at a temperature suitable for breathing.

[0196] That is, a heating wire (h) for heating the respiratory gas and a sensor unit (440) for detecting the temperature and humidity of the respiratory gas heated by the heating wire may be provided inside the suction tube (410).

[0197] The above heating wire (h) may pass through the interior of the suction tube (410), the interior of the branch section (420), and the interior of the discharge tube (430), as illustrated in Fig. 13. At this time, the heating wire (h) may be configured as a pair and may be provided in a spirally wound state inside the suction tube (410) or the discharge tube (430).

[0198] One longitudinal end of the heating wire (h) may be connected to a connection terminal (463) provided inside a connection portion (460) to be described later, as illustrated in Fig. 13. In addition, the other longitudinal end of the heating wire (h) may be arranged at the other longitudinal end of the discharge tube (430) sequentially via the suction tube (410), the branch portion (420), and the discharge tube (430). At this time, the other longitudinal end of the heating wire (h) may be connected to a fixture (431) built into the other longitudinal end of the discharge tube (430).

[0199] The heating wire (h) may be wound in a spiral shape so as to be biased toward the inner surface of the suction tube (410) or the inner surface of the discharge tube (430) so as not to interfere with the flow of respiratory gas.

[0200] The respiratory gas sequentially delivered to the patient through the water chamber (310), the suction tube (410), and the branch portion (420) can be heated by the heating wire (h) provided inside the suction tube (410) to form a temperature at which the patient can easily breathe. For example, the respiratory gas can be delivered to the patient while being heated by the heating wire (h) to form a temperature of 37°C or higher and 40°C or lower.

[0201] In addition, the gas discharged from the patient after the patient breathes can be delivered to the ventilator (10) while being heated by the heating wire (h) provided inside the branch section (420) and inside the discharge tube (430).

[0202] The heating wire (h) provided inside the branch part (420) and inside the discharge tube (430) not only prevents the gas discharged from the patient from condensing inside the discharge tube (430), but also prevents the temperature of the respiratory gas passing through the internal space of the branch part (420) from dropping. That is, the heating wire (h) provided inside the branch part (420) can prevent the temperature of the respiratory gas, which is primarily heated inside the suction tube (410), from dropping due to the internal temperature of the branch part (420) when it reaches the branch part (420). In addition, the heating wire (h) provided inside the discharge tube (430) serves to keep the internal temperature of the branch part (420) constant.

[0203] The above branch section (420) may include, as illustrated in FIGS. 11 to 13 and 15, a main tube (421) that is communicatively connected to a respiratory mask worn by a patient; a first guide tube (422) that branches off from the main tube (421) and is communicatively connected to the other longitudinal end of the suction tube (410); and a second guide tube (423) that branches off from the main tube (421) and is communicatively connected to one longitudinal end of the discharge tube (430).

[0204] The main tube (421) forms a space through which respiratory gas delivered to the patient or gas discharged from the patient passes.

[0205] The first guide tube (422) serves to deliver respiratory gas through the suction tube (410) to the main tube (421).

[0206] The second guide tube (423) serves to deliver the patient's exhaust gas through the main tube (421) to the exhaust tube (430).

[0207] Meanwhile, as illustrated in FIGS. 13 to 16, the first guide tube (422) and the second guide tube (423) of the branch section (420) can be connected to the suction tube (410) or the discharge tube (430) via a hollow connecting portion (424, 424').

[0208] The above connecting portion (424, 424') may include an insertion tube (424a, 424a') that is inserted into the longitudinal other end of the suction tube (410) or the longitudinal one end of the discharge tube (430); and a receiving tube (424b, 424b') that is connected so as to be communicatively connected to the insertion tube (424a, 424a') and has an outer diameter and an inner diameter that are larger than the outer diameter and inner diameter of the insertion tube (424a, 424a').

[0209] The outer diameter of the insertion tube (424a, 424a') can be said to be smaller than the inner diameter of the other longitudinal end of the suction tube (410) or the inner diameter of one longitudinal end of the discharge tube (430).

[0210] When the inner diameter of the longitudinal other end of the suction tube (410) or the longitudinal one end of the discharge tube (430) is inserted into the insertion tube (424a, 424a'), the longitudinal other end of the suction tube (410) or the longitudinal one end of the discharge tube (430) can come into contact with the step surface (d1) formed at the connection point between the insertion tube (424a, 424a') and the receiving tube (424b, 424b').

[0211] The inner diameter of the above-mentioned receiving tube (424b, 424b') can be said to be naturally larger than the outer diameter of the first guide tube (422) or the outer diameter of the second guide tube (423).

[0212] Accordingly, the first guide tube (422) or the second guide tube (423) can be inserted into the interior of the receiving tube (424b, 424b).

[0213] Here, the length of the first guide tube (422) or the second guide tube (423) inserted into the interior of the receiving tube (424b, 424b') can be said to be shorter than the length of the receiving tube (424b, 424b').

[0214] Meanwhile, inside the receiving tube (424b) connected to the first guide tube (422), the sensor unit (440) and the fixing unit (450) supporting the sensor unit (440) may be arranged.

[0215] The above sensor unit (440) can be said to be a component that measures the temperature and humidity of the respiratory gas passing through the longitudinal other end of the suction tube (410).

[0216] The sensor unit (440) is preferably positioned in a section before the respiratory gas passing through the suction tube (410) is delivered to the patient, so as to accurately measure the temperature and humidity of the respiratory gas. Accordingly, it is preferably positioned inside the receiving tube (424b), which is a section before the respiratory gas is delivered to the patient's mouth through the entire length of the suction tube (410), so as to measure the temperature and humidity of the respiratory gas.

[0217] If the sensor unit (440) is placed inside the suction tube (410), there is a risk that the sensor unit (440) may be damaged during the process of expanding and contracting the suction tube (410), and there is also a problem of not being able to accurately measure temperature / humidity changes that occur during the process of respiratory gas flowing along the length of the suction tube (410).

[0218] The temperature and humidity of the respiratory gas measured by the sensor unit (440), or the internal temperature and humidity of the suction tube (410), can be displayed on the display of the main body (200) and transmitted to the user.

[0219] For reference, the sensor unit (440) for measuring the temperature and humidity of the fluid has a configuration that can be easily selected by a person skilled in the art, so in the specification of the present invention, a detailed description of the configuration of the sensor unit (440) is omitted so as not to obscure the gist of the invention.

[0220] The above-mentioned fixed part (450), as illustrated in FIGS. 14 to 16, can be placed in a space (S3) between one longitudinal end of the first guide tube (422) inserted into the receiving tube (424b) and a step surface (d2) formed at the connection point between the insertion tube (424a) and the receiving tube (424b).

[0221] The above fixed part (450) supports the sensor part (440) that measures the temperature and humidity of the respiratory gas so that it does not come into contact with the inner surface of the receiving tube (424b), and further guides the power line connected to the sensor part (440) so that it does not interfere with the flow of the respiratory gas.

[0222] The above-mentioned fixed part (450) may include a pair of curvature members (451) that are arranged at a predetermined interval from each other inside the receiving tube (424b) and form a curvature corresponding to the inner curvature of the receiving tube (424b); a connecting member (452) that connects one longitudinal end of the pair of curvature members (451) to each other; and a fastening member (423) that is arranged at a distance from the connecting member (452) and connects the other longitudinal end of the pair of curvature members (451) to each other.

[0223] A pair of curved members (451) are arranged in the space between one longitudinal end of the first guide tube (422) and the step surface (d2) formed in the receiving tube (424b), and can be in contact with the inner surface of the receiving tube (424b).

[0224] Accordingly, one end of the width direction of the curvature member (451) can be fixedly placed inside the receiving tube (424b) by being pressed against one end of the length direction of the first guide tube (422).

[0225] For reference, the curvature member (451) is first inserted into the interior of the receiving tube (424b) before the first guide tube (422) is inserted into the interior of the receiving tube (424b), so that the other end in the width direction can come into contact with the step surface (d2).

[0226] The above connecting member (452) can be said to be a component that does not come into contact with the inner surface of the receiving tube (424b) when the curvature member (451) comes into contact with the inner surface of the receiving tube (424b).

[0227] The connecting member (452) can be said to be a part that is gripped by the user when there is a need to separate the fixed part (450) from the inside of the receiving tube (424b).

[0228] Therefore, it is preferable that the connecting member (452) be formed in a form that does not contact the inner surface of the receiving tube (424b) so that it can be easily gripped by the user's hand or a separate gripping tool, as shown in FIG. 16, and that a pair of curved members (451) are connected to each other.

[0229] The fastening member (453) can be said to be a component that defines a space in which the sensor unit (440) can be installed.

[0230] The fastening member (453) may include a pair of vertical members (453a) that extend from the longitudinal end of the curved member (451) in the direction in which the connecting member (452) is arranged; a horizontal member (453b) that connects the pair of vertical members (453a) to each other and, in cooperation with the pair of vertical members (453a), defines a 'ㄷ' shaped groove in which the sensor unit (440) can be seated; and a hook (453c) that protrudes from the vertical member (453a) and prevents the sensor unit (440) seated in the groove from being detached.

[0231] The fastening member (453) configured as described above can form a 'ㄷ' shaped groove in which the sensor unit (440) can be installed, as described above.

[0232] Accordingly, the sensor part (440) can be placed inside the receiving tube (424b) while being supported by the fixing part (440) by being seated in the groove formed by the fastening member (453).

[0233] The fixed part (450) configured as described above allows the sensor part (440) to be stably positioned inside the receiving tube (424b) without movement due to external force, and when necessary, allows the sensor part (440) to be easily taken out inside the receiving tube (424b), thereby providing convenience for replacement or repair.

[0234] Meanwhile, as shown in FIG. 1 and FIG. 11 to FIG. 13, a connecting portion (460) may be provided at one longitudinal end of the suction tube (410).

[0235] The above connection part (460) can be said to be a configuration that guides the respiratory gas discharged from the respiratory gas discharge port (312) of the water chamber (310) to the suction tube (410) and, in addition, transmits power to the heating wire (h) and the sensor part (440).

[0236] Accordingly, the connecting portion (460) may include a connecting tube (461) that is communicatively connected to the respiratory gas discharge port (312) of the water chamber (310); a terminal receiving tube (462) that is communicatively connected to the connecting tube (461) and the suction tube (410); and a connecting terminal (463) that is provided inside the terminal receiving tube (462) and is electrically connected to the heating wire (h) and the sensor unit (440).

[0237] The connecting tube (461) serves to guide the respiratory gas passing through the water chamber (310) to the suction tube (410) while being connected to one end of the longitudinal direction of the suction tube (410).

[0238] The terminal receiving tube (462) provides a space in which a connection terminal (462) that is electrically connected to a power plug (20, see Fig. 1) can be received while being integrally connected to the connection tube (461). Accordingly, when the power plug (20, see Fig. 1) is connected to the connection terminal (463), power can be transmitted to the heating wire (h) and the sensor unit (440).

[0239] The connecting portion (460) configured as described above has a configuration in which it is directly connected to the power line of the heating wire (h) and the sensor unit (440) passing through the interior of the suction tube (410) while being communicatively connected to the interior of the suction tube (410), thereby enabling the omission of a separate power line for transmitting power to the heating wire (h) and the sensor unit (440), and further, simplifying the configuration of the circuit unit (400) to enhance the user's convenience.

[0240] Although specific embodiments of the present invention have been described so far, it is obvious that various modifications are possible within the scope of the present invention.

[0241] Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the claims described below, but also by equivalents of the claims.

[0242] The present invention can be sold and used in the medical device industry.

Claims

1. A main body with a heating plate provided on the top; A chamber portion detachably connected to the upper part of the main body and storing distilled water therein; and A respiratory assistance device including a circuit unit connected to the chamber unit and guiding heated / humidified respiratory gas to the patient; A respiratory assistance device characterized in that a guide frame is provided on the upper part of the main body, which defines a mounting groove in which the chamber part is mounted, and restricts forward / backward sliding movement and up / down movement of the chamber part.

2. In paragraph 1, A respiratory assistance device, characterized in that the guide frame is arranged along a portion of the circumference of the heating plate on the upper side of the heating plate exposed to the upper surface of the main body.

3. In paragraph 2, A respiratory assistance device characterized in that a side groove capable of communicating with the mounting groove is formed between the lower surface of the guide frame and the upper surface of the main body.

4. In paragraph 3, The above chamber part, A water chamber that is installed in the above-mentioned installation groove and stores distilled water; A heat conducting plate provided at the bottom of the water chamber and in contact with the heating plate; and A respiratory assistance device characterized by including a cover provided along the circumference of the heat conducting plate and detachably connected to the guide frame.

5. In paragraph 4, The above cover, A first circumferential member provided along the side and rear circumferences of the water chamber and inserted into the side groove to be detachably connected to the guide frame; and A respiratory assistance device characterized by comprising: a second circumferential member provided along the front circumference of the water chamber while connected to the first circumferential member, and exposed to the outside of the mounting groove when the first circumferential member is inserted into the side groove.

6. In paragraph 5, A respiratory assistance device characterized in that a step surface is formed at the connection point between the first circumferential member and the second circumferential member, which contacts the stopper surface formed on the guide frame.

7. In paragraph 5, A respiratory assistance device characterized in that a fastening protrusion is formed on the upper surface of the first circumferential member, and a fastening groove into which the fastening protrusion can be inserted is formed on the lower surface of the guide frame.

8. In paragraph 7, A respiratory assistance device characterized in that the heating plate is provided in the main body while being supported by an elastic means provided inside the main body, and is capable of moving toward the inside of the main body when an external force is applied by a user to the second circumferential member or the water chamber.

9. In paragraph 5, A respiratory assistance device characterized in that a magnetic detection sensor is provided on the inside of the main body to detect the magnetism of a magnet provided on the bottom surface of the second peripheral member when the first peripheral member is inserted into the side groove, thereby confirming whether the first peripheral member and the guide frame are fastened.

10. In paragraph 4, A respiratory assistance device characterized in that a baffle is provided inside the water chamber to open and close a distilled water supply pipe corresponding to the level of distilled water.

11. In paragraph 10, The above bure, A floating member disposed at the lower portion of the internal space formed by the water chamber and capable of floating by distilled water filled in the internal space; An opening / closing unit that blocks the distilled water supply pipe when the floating member rises and opens the distilled water supply pipe when the floating member descends; and A respiratory assistance device characterized by including a link portion connecting the opening and closing portion and the floating member to each other.

12. In paragraph 11, The above distilled water supply pipe, A first flow path that is communicably connected to a distilled water supply port provided on the upper surface of the water chamber; and A respiratory assistance device characterized by including a second passage that is communicatively connected to the first passage and has an inner diameter smaller than the inner diameter of the first passage.

13. In paragraph 12, The above opening and closing part is, A head member placed in the first euro above; An elevator rod integrally connected to the head member while forming an outer diameter smaller than the outer diameter of the head member, and having a longitudinal portion disposed in the second flow path; and A respiratory assistance device characterized by including a sealing member that is arranged in the first passage and is provided at the connection point of the above-mentioned lifting rod and the above-mentioned head member, and opens and closes the communication point between the first passage and the above-mentioned second passage.

14. In paragraph 13, The above link part, A first connecting member having a lower end connected to the upper surface of the floating member and an upper end extending upwardly in an inclined manner and rotatably connected to the lower end of the lifting rod; and A respiratory assistance device characterized by including a second connecting member that protrudes upward from a longitudinal middle portion of the first connecting member and has an upper end rotatably connected to a lower end of a support frame arranged on one side of the distilled water supply pipe.

15. In paragraph 4, It is integrally connected to the above guide frame, and includes a protruding frame that comes into contact with the rear surface of the water chamber when the water chamber is seated in the seating groove. A respiratory assistance device characterized in that the protruding frame has a built-in non-contact detection sensor for detecting the level of distilled water filled in the water chamber.

16. In paragraph 4, The above circuit part, A suction tube having one end longitudinally connected to the water chamber and delivering heated / humidified respiratory gas to the patient; A branch portion that is communicatively connected to the longitudinal end of the above suction tube and is communicatively connected to a breathing mask worn by a patient; and A respiratory assistance device characterized by including an exhaust tube, one longitudinal end of which is connected to the branch section in a communicable manner, and the other longitudinal end of which is connected to a respirator, and which guides gas generated after a patient's breathing to the respirator.

17. In paragraph 16, The above circuit part, A respiratory assistance device further comprising a heating wire for heating the respiratory gas and a sensor unit for detecting the temperature and humidity of the respiratory gas.

18. In paragraph 17, A respiratory assistance device characterized in that the above heating wire sequentially passes through the suction tube, the branch section, and the discharge tube.

19. In paragraph 18, A respiratory assistance device characterized in that the heating wire is wound in a spiral shape and provided inside the suction tube or the discharge tube.

20. In paragraph 17, The above branch is, A main pipe that is connected to the above breathing mask; A first guide pipe branching from the main pipe and being connected to the longitudinal end of the suction tube in a communicable manner; and A respiratory assistance device characterized by including a second guide tube branched from the main tube and connected in a manner communicable with one longitudinal end of the discharge tube.

21. In paragraph 20, It further includes a connecting portion that connects the longitudinal end of the suction tube and the first guide tube so that they can be communicated with each other; A respiratory assistance device characterized in that the sensor part and the fixing part supporting the sensor part are arranged inside the above connecting part.

22. In paragraph 21, The above connection part is, An insertion tube inserted into the longitudinal end of the above suction tube; and A receiving tube that is connected to the insertion tube in a communicable manner and has an outer diameter and an inner diameter larger than the outer diameter and inner diameter of the insertion tube; A respiratory assistance device characterized in that the first guide tube is inserted into the above-mentioned receiving tube.

23. In paragraph 22, A respiratory assist device characterized in that the length of the first guide tube inserted into the receiving tube is smaller than the length of the receiving tube.

24. In paragraph 23, The above fixed part, A respiratory assistance device characterized in that it is seated in the space between the longitudinal end of the first guide tube inserted into the above-mentioned receiving tube and the step surface formed at the connection point of the insertion tube and the receiving tube.

25. In paragraph 24, The above fixed part, A pair of curvature members arranged at a predetermined interval from each other inside the above-mentioned receiving tube and forming a curvature corresponding to the inner curvature of the above-mentioned receiving tube; A connecting member connecting one longitudinal end of the above pair of curved members; and A fastening member is disposed spaced apart from the above connecting member and connects the longitudinal ends of the pair of curved members to each other; A respiratory assistance device characterized in that the sensor part is detachably connected to the fastening member.

26. In paragraph 25, A respiratory assistance device, characterized in that the above-mentioned curvature member is in contact with the inner surface of the receiving tube.

27. In paragraph 25, The above fastening member is, A pair of vertical members formed to extend in the direction in which the connecting member is arranged from the longitudinal end of the above-mentioned curved member; A horizontal member that connects the pair of vertical members to each other and defines a 'ㄷ' shaped groove in which the sensor unit can be installed in cooperation with the pair of vertical members; and A respiratory assistance device characterized by including a hook that protrudes from the vertical member and prevents the sensor part from coming off when seated in the groove.

28. In paragraph 17, A respiratory assistance device characterized by including a connecting portion that connects one longitudinal end of the suction tube and the discharge port of the water chamber so as to be communicatively connected to each other and is connected to a power cable to supply power to the heating wire and the sensor portion.

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