JP2014004007A - Expiration resistance device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expiration resistance device capable of acquiring an equivalent effect to that of a puckered-mouth respiration without any need of a conscious effort of a patient without preventing clearance of secretions.SOLUTION: An expiration resistance device 10 being hold in an air passage includes: a body section 100 having an annular cross section and causing air flowing along the air passage to pass inside the annular cross section in a direction of crossing with the annular cross section; and a retaining section 140 protruding from the body section and retaining the body section with respect to the air passage. The body section applies to the air passing through the body section in the expiration, a resistance larger than that of air flowing inversely, in inspiration to the air, and includes an opening/closing section 130 that opens/closes an outermost portion of the outer periphery section 110 constituting the annular cross section.

Description

  The present invention relates to an exhalation resistance device.

  As a medical treatment for chronic obstructive pulmonary disease (COPD), stenosis and respiration are known. Stenosis breathing is a breathing method in which a person breathes in slowly through the nose and then exhales over a longer time than inhaling. By exhaling through the constricted mouth, exhalation resistance in the mouth is increased, and as a result, the air pressure in the bronchus is increased, so that the bronchi are spread and air is easily emitted.

  Tight breathing reduces dyspnea, but requires patient conscious effort. Thus, for example, Patent Document 1 proposes a device that exhibits the same effect as stenosis breathing without requiring patient's conscious effort by generating exhalation resistance in the airway.

US Pat. No. 6,722,360

  However, since the above-mentioned conventional device is placed in the airway in a state of being in close proximity or in close contact with the entire inner periphery of the lung conduit portion constituting the airway, ciliary movement is inhibited throughout the inner periphery of the lung conduit portion. As a result, discharge of secretions such as sputum that occurs as an early symptom of COPD may be hindered.

  The present invention has been made to solve such a problem, and can obtain the same effect as stenosis respiration without requiring conscious effort of the patient, and discharge of secretions. An object of the present invention is to provide an expiratory resistance device that is difficult to be disturbed.

  In order to achieve the above object, an exhalation resistance device of the present invention is an exhalation resistance device that can be placed in an airway, and has an annular cross section, and air that flows along the airway passes the annular inside the annular cross section. A main body that passes in a direction that crosses the cross section; and a holding portion that protrudes from the main body and holds the main body against the airway, and the main body passes through the main body when exhaled. An opening / closing portion that opens and closes the outermost portion of the outer peripheral portion is provided on the outer peripheral portion that forms the annular cross section while giving greater resistance to the air than the air flowing in the opposite direction to the air at the time of inhalation.

  According to the expiratory resistance device configured as described above, in order to give greater resistance to exhalation than inhalation in the state of being placed in the airway, it is equivalent to breathing constriction without requiring patient's conscious effort The effect of can be obtained. Further, according to the exhalation resistance device configured as described above, since the outermost portion of the outer peripheral portion is opened, the inner periphery of the lung conduit portion and the exhalation resistance device are not in close contact with or close to each other at the opened portion. Ciliary movement is not inhibited throughout the inner circumference of the pulmonary conduit, and thus secretion is unlikely to be impeded.

  Further, if the outer peripheral portion has a shape narrowed in a direction crossing the annular cross section, it is possible to give a greater resistance to exhalation than inhalation without a valve body.

  Further, the main body has a valve body arranged in a passage path of air passing through the main body, and the valve body is air that is inhaled with respect to air that passes through the main body when inhaled. If greater resistance than air flowing in the opposite direction is given, resistance greater than inspiration can be given to exhaled air regardless of the shape of the outer periphery.

  Further, if the main body portion has a magnet connected to the opening / closing portion, the opening / closing portion moves together with the magnet by applying a magnetic force to the magnet, so that the opening / closing portion can be easily opened / closed from outside the body.

  Further, if the main body portion has a biasing portion that can bias the opening / closing portion in a closing direction, the closed state of the opening / closing portion is maintained, so that exhalation resistance is likely to occur. The effect equivalent to breathing is demonstrated well.

  Further, if the biasing part includes a weight connected to the opening / closing part, the opening / closing part can be biased with a relatively simple configuration.

  Further, if the urging portion includes an elastic body connected to the opening / closing portion, the urging portion urges the opening / closing portion in a closing direction by an elastic force, so that gravity acts as in the case of urging by a weight. Therefore, it is not necessary to adjust the inclination of the exhalation resistance device, so that the exhalation resistance device can be placed more easily.

  If the outermost portion of the outer peripheral portion has an arc shape that is a part of an elliptical shape, when the exhalation resistance device is tilted and placed in the lung conduit portion, the exhalation resistance device and the lung conduit portion Is difficult to buffer, and therefore it is easy to place an exhalation resistance device.

It is a perspective view of the exhalation resistance device of a 1st embodiment. It is a perspective view which turns over and shows the exhalation resistance device of 1st Embodiment shown in FIG. It is the arrow view seen from the arrow 3 direction of FIG. It is the arrow view seen from the arrow 4 direction of FIG. It is sectional drawing of the exhalation resistance device of 1st Embodiment. It is a perspective view of the breath resistance device of a 1st embodiment shown in the state where a part of perimeter part was half opened. It is a perspective view which turns over and shows the exhalation resistance device of 1st Embodiment shown in FIG. It is the arrow view seen from the arrow 8 direction of FIG. It is a perspective view of the exhalation resistance device of a 1st embodiment shown in the state where a part of perimeter part was fully opened. FIG. 10 is a perspective view showing the exhalation resistance device of the first embodiment shown in FIG. 9 upside down. It is the arrow view seen from the arrow 11 direction of FIG. (A) is a partial enlarged cross-sectional view of the exhalation resistance device showing a state in which the valve body is opened relatively large, (B) is a state in which the valve body is opened relatively small on the side opposite to (A). It is a partial expanded sectional view of the exhalation resistance device shown. It is a figure which shows typically the state by which the exhalation resistance device was detained in the trachea. It is a perspective view which shows a mode when the exhalation resistance device of 1st Embodiment is detained in the trachea. It is the arrow view seen from the arrow 15 direction of FIG. It is a perspective view which shows a mode when a part of outer peripheral part of the exhalation resistance device of 1st Embodiment indwelled in the trachea fully opens from the same direction as FIG. It is a perspective view of the breath resistance device of a 2nd embodiment. It is a perspective view which shows the exhalation resistance device of 2nd Embodiment from the direction different from FIG. It is a perspective view of the breath resistance device of a 2nd embodiment shown in the state where the valve body was opened. It is a disassembled perspective view which shows the expiratory resistance device of 2nd Embodiment partially disassembled. (A) And (B) is a perspective view which shows the same connection member from a different direction, (C) is a perspective view which shows another connection member, (D) is a different direction of the same connection member as (C). It is a perspective view shown from. It is a perspective view which shows a mode when a part of outer peripheral part of the exhalation resistance device of 2nd Embodiment opens. It is a disassembled perspective view which shows a mode when a part of outer peripheral part of the exhalation resistance device of 2nd Embodiment opens, and cuts off some components which decomposed | disassembled the exhalation resistance device partially. It is a perspective view of the breath resistance device of a 2nd embodiment shown in the state where a part of perimeter part was fully opened. It is a perspective view of the breath resistance device of a 3rd embodiment. FIG. 26 is a perspective view showing the breath resistance device of the third embodiment shown in FIG. 25 upside down.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the dimension ratio of drawing is exaggerated on account of description, and may differ from an actual ratio.

<First Embodiment>
As shown in FIGS. 1 to 5, the expiratory resistance device 10 of the first embodiment includes an outer peripheral portion 110 that forms an annular cross section and a valve body 115 that adjusts the flow of air flowing in a direction intersecting the annular cross section. It has the main-body part 100 which has. The exhalation resistance device 10 has a claw-like member 140 (holding portion) protruding from the outer peripheral portion 110. The exhalation resistance device 10 is used for the treatment of chronic obstructive pulmonary disease (COPD).

  The outer peripheral portion 110 includes a first component piece 120 having a shape in which a circumferentially open portion 121 is formed on the outer periphery of a hollow truncated cone, and a second component piece 130 that opens and closes at the circumferentially open portion 121. (Opening / closing part).

  A ring 111 having a smaller diameter than the diameter of the opening 122 is disposed concentrically with the opening 122 in the opening 122 formed on the narrowed side of the first component piece 120. The ring 111 is fixed to the first component piece 120.

  A plurality of portions 121 opened in the circumferential direction are formed at equal intervals in the circumferential direction. In the present embodiment, three portions 121 opened in the circumferential direction are formed. The portion 121 opened in the circumferential direction is formed from the end opposite to the side on which the first component piece 120 is narrowed to the side that is narrowed.

  The second component piece 130 is connected to the ring 111 by an attachment portion 131 that is slidably attached to the ring 111. The second component piece 130 is inclined at an inclination angle substantially the same as that of the first component piece 120 with respect to the direction orthogonal to the annular cross section of the outer peripheral portion 110. Three second component pieces 130 are arranged at equal intervals in the circumferential direction. The exhalation resistance device 10 includes a connecting member 134 that connects the plurality of second components 130.

  A magnet 133 is attached to the second component piece 130 (FIGS. 2 and 4). A weight 132 (biasing portion) is attached to the second component piece 130 (FIGS. 2 and 4). The magnet 133 is fixed to one end of the arc-shaped end portion of the second component piece 130 on the side opposite to the side attached to the ring 111. The weight 132 is fixed to the other end of the same end.

  As shown in FIGS. 6 to 11, the second component piece 130 opens and closes at a portion 121 that moves in the circumferential direction and opens in the circumferential direction. When the second component piece 130 is moved until the entirety of the second component piece 130 overlaps with the first component piece 120 and the entire portion 121 opened in the circumferential direction is opened, the attachment portion 131 comes into contact with the stopper 113 attached to the ring 111. Therefore, it does not move in the circumferential direction before that (FIGS. 9 and 11). Further, when the second component piece 130 moves until it covers the entire portion 121 opened in the circumferential direction, the mounting portion 131 comes into contact with the stopper 112 attached to the ring 111, so that it moves in the circumferential direction earlier than that. Not (FIGS. 1 and 3).

  Since the plurality of second component pieces 130 are connected to each other by the connecting member 134, the other second component piece 130 opens and closes in conjunction with the opening and closing of the one second component piece 130.

  As shown in FIG. 12, the valve body 115 rotates around the axis of the ring 111 and opens and closes. The valve body 115 opens relatively large in the airway extinction direction. For example, when the valve body 115 is placed in the direction shown in FIG. 13, the valve body 115 opens as shown in FIG. 12A, and in the opposite direction, as shown in FIG. Open relatively small. The degree of opening of the valve body 115 changes, for example, by changing the curvature of the outer periphery of the mounting portion 116 rotatably attached to the ring 111 around the axis of the ring 111.

  The claw-like member 140 has elasticity. The claw-like member 140 can be expanded and contracted. The claw-shaped member 140 is fixed to the first component piece 120.

  A method of using the exhalation resistance device 10 will be described.

  First, the exhalation resistance device 10 is placed in the airway. The site where the exhalation resistance device 10 is placed is preferably the trachea, but is not limited thereto, and may be a site on the more peripheral side, for example, main bronchus, lobe bronchus, or bronchus.

  The surgeon inserts the endoscope containing the exhalation resistance device 10 to the target position of the trachea. Thereafter, the surgeon places the exhalation resistance device 10 in the trachea by pushing out the exhalation resistance device 10 from the lumen of the endoscope in which the exhalation resistance device 10 is accommodated using, for example, forceps.

  As shown in FIGS. 13 to 15, the exhalation resistance device 10 is placed so that the constricted side of the outer peripheral portion 110 faces the distal side of the trachea B. The exhalation resistance device 10 is held in the trachea B by a nail-like member 140. The claw-shaped member 140 is pressed from the trachea B and contracted. The claw-like member 140 holds the exhalation resistance device 10 by stretching so as to press the inner surface of the trachea B radially outward.

  When exhaling, the valve body 115 opens smaller than when inhaling. For this reason, the valve body 115 gives resistance larger than inspiration to expiration. In addition, since the outer peripheral portion 110 has a constricted shape, inhalation is easily guided by the inner surface of the outer peripheral portion 110 and passes through the exhalation resistance device 10, but exhalation is not guided by the outer peripheral portion 110 and the exhalation resistance device 10. Difficult to pass through. For this reason, exhaled air receives a larger resistance than inspiration due to the narrowed shape of the outer peripheral portion 110.

  The expiratory resistance device 10 is placed in the trachea B with the second component 130 with the weight 132 attached facing the side of the body. Further, the exhalation resistance device 10 is placed in the trachea B while being inclined from the front side of the body to the back side. When placed in this manner, the weight 132 tends to urge the second component piece 130 in the closing direction due to the action of gravity, and therefore, the state where the circumferentially opened portion 121 is blocked is easily maintained.

  The surgeon or patient opens the second component piece 130 by operating a magnet having a magnetic pole opposite to the magnet 133 outside the body. For example, when the outer surface of the magnet 133 is the north pole, the operator or patient brings the south pole closer to the magnet 133 outside the body. The operator or patient opens the second component piece 130 as shown in FIG. 16 by pulling and moving the magnet 133 to the magnet outside the body. The operator or patient can similarly close the second component 130 by manipulating the magnet outside the body.

  Usually, the weight 132 keeps the second component piece 130 closed. When wrinkles occur or mucus increases, the operator or patient opens the second piece 130 to facilitate the discharge of secretions such as wrinkles and mucus.

  In this embodiment, the constricted side of the outer peripheral portion 110 is placed so as to face the distal side of the trachea B. However, the present invention is not limited to this, and the constricted side of the outer peripheral portion 110 faces the proximal end side of the trachea B. It may be detained. In this case, it is preferable that the valve body 115 be opened relatively large toward the erasing side and, conversely, be opened relatively small toward the base end side. By adopting such a configuration, the effect of stenosis and respiration can be enhanced as in the above-described embodiment.

  The operation and effect of this embodiment will be described.

  The exhalation resistance device 10 provides greater resistance to exhalation than exhalation by the valve body 115 in the state where it is indwelled in the trachea B, so that it does not require the conscious effort of a patient suffering from chronic obstructive pulmonary disease. The same effect as stenosis breathing can be demonstrated.

  The expiratory resistance device 10 provides greater resistance to exhalation than inhalation due to the constricted shape of the outer periphery 110 when it is indwelled in the trachea B, so that the conscious effort of a patient suffering from chronic obstructive pulmonary disease is reduced. The effect equivalent to stenosis breathing can be exhibited without necessity.

  When the second component piece 130 is opened, a part of the outermost part of the outer peripheral portion 110 that is closest to or closely contacts the inner surface of the trachea B is partially opened. Specifically, a part of the circular edge on the side opposite to the constricted side of the outer peripheral portion 110 opens. In this open portion, the exhalation resistance device 10 does not come close to or in close contact with the inner surface of the trachea B. For this reason, ciliary movement is not inhibited in the entire inner periphery of the trachea B, and therefore it is difficult to prevent discharge of secretions such as sputum and mucus.

  Further, since the second component piece 130 moves by applying a magnetic force to the magnet 133, the second component piece 130 can be easily opened and closed from outside the body.

  In addition, since the weight 132 maintains the state where the second component piece 130 is closed and the whole portion 121 opened in the circumferential direction is closed, the passage of exhalation is hindered, and exhalation resistance easily occurs. Therefore, an effect equivalent to that of stenosis breathing is exhibited well.

  Further, since the second component piece 130 is urged by the weight 132, the second component piece 130 can be urged by a relatively simple configuration.

  Further, since the plurality of second component pieces 130 are opened and closed in conjunction with each other, it is not necessary to open and close the plurality of second component pieces 130 one by one, and thus the opening / closing operation is easy.

Second Embodiment
As shown in FIGS. 17-19, the exhalation resistance device 20 of 2nd Embodiment has the outer peripheral part 210 which comprises an annular cross section, and the valve body 215 which adjusts the flow of the air which flows into the direction which cross | intersects an annular cross section. It has the main-body part 200 which has. The exhalation resistance device 20 has a claw-shaped member 140 (holding portion) protruding from the outer peripheral portion 210. The claw-shaped member 140 is the same as that of the first embodiment.

  As shown in FIG. 20, the outer peripheral portion 210 is formed by cutting a truncated cone having an elliptical top and bottom surface in the height direction so as to be orthogonal to the major axis at a position shifted from the center of the major axis of the top and bottom surfaces. It has the 1st component piece 230 which has the shape of the same circumferential direction as the long one of the length of the circumferential direction divided into two. The outer peripheral part 210 is a second component piece having the same circumferential shape as one of the two parts obtained by cutting the truncated cone in a height direction perpendicular to these surfaces so as to pass through the center of the top surface and the bottom surface. 220 (opening / closing part). The second component piece 220 has a magnet 221 at one end of a semicircular end 223 opposite to the constricted side. The magnet 221 has a spherical shape. The valve body 215 opens relatively large in the direction in which the outer peripheral portion 210 is narrowed, and opens relatively small in the opposite direction.

  The first component piece 230 and the second component piece 220 are connected via a connection member 211 and a connection member 212 fixed to the first component piece 230. The connection member 211 is fixed to the inside of the arc-shaped end portion on the narrowed side of the first component piece 230. The connection member 212 is fixed to the inside of the arc-shaped end portion on the opposite side to the side on which the first component piece 230 is narrowed.

  As shown in FIGS. 21A and 21B, the connection member 211 has a semicircular shape similar to the end portion 222 on the narrowed side of the second component piece 220. The connection member 211 has a tubular shape. The connection member 211 has a slit 213 having a semicircular shape similar to the end portion 222 of the second component piece 220. The slit 213 extends from one end of the connection member 211 to the other end. The width of the slit 213 is larger than the thickness of the end 222 of the second component piece 220.

  As shown in FIGS. 21C and 21D, the connecting member 212 has a semicircular shape similar to the end 223 of the second component piece 220. The connecting member 212 has a tubular shape. The inner diameter of the connection member 212 is larger than the diameter of the magnet 221. The connection member 212 includes a slit 214 having a semicircular shape similar to the end 223 of the second component piece 220. The slit 214 extends from one end of the connection member 212 to the other end. The width of the slit 214 is larger than the thickness of the end 223 of the second component piece 220.

  The opening at one end of the connecting member 212 is partially blocked by a stopper 216 provided in the opening, leaving a gap communicating with the slit 214. The opening at the other end of the connecting member 212 is closed without a gap by a plug 218 provided in the opening.

  As shown in FIG. 22 and FIG. 23, the second component piece 220 opens while sliding the end 222 along the slit 213 and sliding the end 223 along the slit 214. In FIG. 23, the second component piece 220 and the connection members 211 and 212 are separated from other members and a part thereof is cut out. The magnet 221 slides inside the connection member 212. The second component piece 220 opens until the magnet 221 contacts the stopper 218. The second component piece 220 is between the state in which the magnet 221 contacts the stopper 218 and opens as shown in FIG. 24 and the state in which the magnet 221 contacts the stopper 216 and closes as shown in FIG. , Slide to open and close about 180 °. Since the magnet 221 contacts the stopper 216 and the stopper 218, the second component piece 220 does not come off from the connection member 212.

  The method of using the exhalation resistance device 20 is substantially the same as in the first embodiment. The exhalation resistance device 20 is placed so that the constricted side of the outer peripheral portion 210 faces the distal side of the trachea. When exhaling, the valve body 215 opens smaller than when inhaling. For this reason, the valve body 215 gives resistance larger than inspiration to expiration. Moreover, the exhalation resistance device 20 gives resistance larger than inspiration to exhalation due to the constricted shape of the outer peripheral portion 210.

  The exhalation resistance device 20 is indwelled in the trachea inclined from the first component piece 230 side to the second component piece 220 side. When left in this way, the magnet 221 easily biases the second component piece 220 in the closing direction due to the action of gravity, so that the state where the second component piece 220 is closed is easily maintained. The magnet 221 functions as a weight.

  The operator or patient opens the second component piece 220 by operating the magnet 221 having the same magnetic pole as the magnet 221 outside the body. For example, when the outer surface of the magnet 221 has a north pole, the operator or patient brings the north pole closer to the magnet 221 outside the body. The operator or patient opens the second component piece 220 by repelling the magnet 221 with the magnet outside the body and sliding the connection member 212 inside. The operator or patient can similarly close the second component piece 220 by manipulating the magnet outside the body.

  Usually, the second component piece 220 is maintained in a closed state by its own weight. When wrinkles occur or mucus increases, the operator or patient opens the second component 220 to facilitate the discharge of secretions such as wrinkles and mucus.

  Similarly to the first embodiment, this embodiment may be placed so that the narrowed side of the outer peripheral portion 210 faces the proximal end side of the trachea.

  The operation and effect of this embodiment will be described.

  The expiratory resistance device 20 provides greater resistance to exhalation by the valve body 215 than is inhaled by the valve body 215 when placed in the trachea, so that the mouth of the patient suffering from chronic obstructive pulmonary disease does not need to be consciously engaged. The same effect as stenosis breathing can be demonstrated.

  The expiratory resistance device 20 provides greater resistance to exhalation than inhalation due to the constricted shape of the outer perimeter 210 when it is indwelled in the trachea, thus requiring the conscious effort of a patient suffering from chronic obstructive pulmonary disease The effect equivalent to stenosis breathing can be exhibited without.

  When the second component piece 220 is opened, a part of the outermost part of the outer peripheral portion 210 that is closest to or closely contacts the inner surface of the trachea, specifically, an end portion 223 of the second component piece 220 is opened. In this open portion, the expiratory resistance device 20 does not come close to or in close contact with the inner surface of the trachea. For this reason, ciliary movement is not inhibited in the entire inner periphery of the trachea, and therefore, it is difficult to prevent discharge of secretions such as sputum and mucus.

  Moreover, the outermost part of the outer peripheral part 210 has the circular arc shape which is a part of elliptical shape. Specifically, the first component piece 230 has an arc shape in which an end portion on the opposite side to the constricted side is an elliptical part. For this reason, when the exhalation resistance device 20 is tilted and placed in the trachea, the exhalation resistance device 20 and the trachea are not easily buffered, and therefore the exhalation resistance device 20 is easily placed.

  In addition, since the second component piece 220 moves by applying a magnetic force to the magnet 221, the second component piece 220 can be easily opened and closed from outside the body.

  In addition, since the magnet 221 functions as a weight, the second component piece 220 is maintained in a closed state, so that the passage of exhalation is hindered and expiratory resistance is likely to occur. The effect is exhibited well.

<Third Embodiment>
Outlined in FIGS. 25 and 26, the breath resistance device 30 of the third embodiment has substantially the same configuration as that of the first embodiment, but has no weight 132, and instead of the weight 132, the second component 130. It differs from 1st Embodiment by the point which has the spring 117 (elastic body) which urges | biases. About another structure and usage, since this embodiment is as substantially the same as 1st Embodiment, the overlapping description is abbreviate | omitted.

  The spring 117 is provided along the ring 111. One end of the spring 117 contacts the stopper 113. The other end of the spring 117 is in contact with the attachment portion 131. The spring 117 pushes the attachment portion 131 and urges the second component piece 130 in the closing direction. The attachment portion 131 is pressed by the spring 117 and is in contact with the stopper 112. The spring 117 maintains the second component piece 130 in a closed state so as to cover the entire portion 121 opened in the circumferential direction. The operator or the patient opens the second component piece 130 using the magnet as in the first embodiment.

  In the exhalation resistance device 30 of the present embodiment, the spring 117 biases the second component piece 130 in the closing direction by an elastic force, and thus the second component piece 130 is used as in the first embodiment using the weight 132. It is not necessary to adjust the tilt of the expiratory resistance device 30 in order to maintain the closed state. Therefore, according to the exhalation resistance device 30 of this embodiment, in addition to the effect of the first embodiment, there is an effect that the exhalation resistance device 30 can be placed more easily.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims.

  For example, the present invention includes a form in which the valve body 115 is removed from the exhalation resistance device 10 of the first embodiment. In this case, the exhalation resistance device 10 does not have the valve body 115, but the exhalation resistance can be generated by the narrowed shape of the outer peripheral portion 110.

  Further, as long as exhalation resistance can be generated by the valve body, the shape of the outer peripheral portion is not limited to the narrowed shape as in the embodiment, and may be a cylindrical shape. In this case, the first embodiment will be described as an example. In the expiratory resistance device 10, the outer peripheral portion 110 has a cylindrical shape, and a portion 121 opened in the circumferential direction reaches the opening 122.

  Further, rubber may be used as an elastic body instead of the spring 117 of the third embodiment.

10, 20, 30 expiratory resistance device,
100, 200 body part,
110, 210 outer periphery,
115, 215 disc,
117 Spring (Biasing part)
120, 230 first component piece,
130, 220 second component (opening / closing part),
132 Weight (biasing part),
133 magnets,
140 Claw-shaped member (holding part),
221 magnet (biasing part),
B Trachea.

Claims (9)

An expiratory resistance device that can be placed in the airway,
A main body having an annular cross section and allowing air flowing along an airway to pass inside the annular cross section in a direction intersecting the annular cross section;
A holding part that protrudes from the main body part and holds the main body part against the airway,
The main body portion gives a greater resistance to air passing through the main body portion when exhaling than air flowing in the opposite direction to the air during inhalation, and the outer peripheral portion constituting the annular cross section An exhalation resistance device having an opening / closing part that opens and closes the outermost part of the breathing device.   The exhalation resistance device according to claim 1, wherein the outer peripheral portion has a shape narrowed in a direction intersecting the annular cross section.   The main body portion has a valve body arranged in a passage path of air passing through the main body portion, and the valve body is opposite to the air during inhalation with respect to the air passing through the main body portion during exhalation. The exhalation resistance device according to claim 1 or 2, which provides a greater resistance than air flowing in a direction.   The exhalation resistance device according to any one of claims 1 to 3, wherein the main body portion includes a magnet connected to the opening / closing portion.   The exhalation resistance device according to claim 1, wherein the main body portion includes a biasing portion that can bias the opening / closing portion in a closing direction.   The exhalation resistance device according to claim 5, wherein the biasing portion includes a weight connected to the opening / closing portion.   The exhalation resistance device according to claim 5 or 6, wherein the biasing portion includes an elastic body connected to the opening / closing portion.   The said main-body part has a plurality of said opening-and-closing parts, and the said other opening-and-closing part opens and closes in connection with opening and closing of one said opening-and-closing part, The one of Claims 1-7. Expiratory resistance device.   The exhalation resistance device according to claim 3, wherein the outermost portion of the outer peripheral portion has an arc shape that is a part of an elliptical shape.

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