JP2016106946A - Respiratory function test apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a respiratory function test apparatus, even when there are a manufacturing error and a fitting error, easily attaching/detaching an absorber storage case and achieving reliable connection without any leakage at a connection part.SOLUTION: When a storage case 5 is further inserted into a recess 18, right ends of lip parts 65A and 65B are further fallen in a direction of an arrow 66, and the right ends of the lip parts 65A and 65B are brought into a line contact with inner peripheral surfaces 74A and 74B of female joints 71A and 71B. Even when there are manufacturing errors and fitting errors in the female joints 71A and 71B and male joints 61A and 61B, the right ends of the lip parts 65A and 65B are fallen in the direction of the arrow 66, while retaining the line contact state, to absorb the errors.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a respiratory function testing device including a storage case that stores an absorbent that absorbs carbon dioxide gas called from a subject to a respiratory path.

  2. Description of the Related Art Conventionally, a respiratory function testing device that tests respiratory function while absorbing carbon dioxide gas called by a subject to the respiratory route in an absorbent (soda lime) has been proposed, as in the respiratory function testing device shown in Patent Document 1. ing.

JP 2000-37368 A

  And as such a respiratory function test | inspection apparatus, in order to be able to replace | exchange an absorbent, there exists what changed the whole storage case which accommodated the absorbent. However, since such a storage case is provided in the respiratory path, it is difficult to facilitate replacement without affecting the respiratory function test.

  An object of the present invention is to provide a respiratory function test apparatus that can easily replace a storage case without affecting the test of the respiratory function.

The said subject is solved by the following means.
That is, the respiratory function testing device of means 1 is
A respiratory function testing device (1) for testing a subject's respiratory function,
The body part (11) of the respiratory function testing device is provided with a connection part (concave part 18) for connecting a storage case (5) containing an absorbent (51) for absorbing carbon dioxide gas to the respiratory path. ,
The connecting portion has a cylindrical female joint (71A, 71B),
The storage case includes a cylindrical male joint (61A, 61B) that is inserted into the female joint and fits therein.
The male joint is formed of an elastic member,
One end of the male joint is fixed to the storage case,
The other end of the male joint protrudes from the storage case, and its outer peripheral surface (64A, 64B) is fitted into the inner peripheral surface (74A, 74B) of the female joint,
The other outer peripheral surface of the male joint protrudes radially outward from the outer peripheral surface of the male joint, and the diameter of the male joint is increased obliquely from the other end side to the one end side. A lip portion (65A, 65B) that makes line contact with the surface is formed.
According to this means, the storage case can be easily replaced without affecting the examination of the respiratory function.

The respiratory function testing device of means 2 is:
A respiratory function testing device described in means 1,
The inner diameter of the female joint is not reduced from the other end side to the one end side of the male joint when the male joint is fitted therein.
According to this means, the storage case can be easily detached from the main body.

The respiratory function testing device of means 3 is:
A respiratory function testing device described in means 2,
The connection portion is a recess (18) formed on a side surface of the body portion (11) of the respiratory function testing device,
The recess has a load support surface (181) on which a bottom surface (531) of the storage case is placed and supports a downward load of the storage case,
The load support surface is provided with a first guide rail (182) formed in parallel with the insertion direction of the storage case,
A guide groove (532) that is formed in parallel to the insertion direction of the storage case and engages with the first guide rail is provided on the bottom surface of the storage case.
According to this means, the operation when the storage case is attached to and detached from the main body is facilitated.

The respiratory function testing device of means 4 is:
A respiratory function testing device described in means 3,
A second guide rail (184) formed in parallel with the insertion direction of the storage case is provided on the upper surface (183) of the recess,
An engagement protrusion (523) that engages with the second guide rail is formed on the upper portion (upper plate 52) of the storage case 5.
According to this means, the operation when the storage case is attached to and detached from the main body is facilitated.

The respiratory function testing device of means 5 is:
A respiratory function testing device according to means 3 or 4,
The recess is
It is attached to the main body of the respiratory function testing device so as to be openable and closable, and is formed on a side surface of an open / close door (17) that shields a respiratory space.
According to this means, it is possible to suppress the enlargement of the main body by effectively utilizing the space of the door.

1A and 1B show the appearance of the respiratory function testing device of the present embodiment, where FIG. 1A is a front view and FIG. 1B is a plan view of FIG. FIG. 2 is a perspective view showing a state in which the open / close door of the respiratory function testing device of FIG. 1 is opened. FIG. 3 is a rear view of the open / close door of the respiratory function test apparatus of FIG. 1. FIG. 4 is an explanatory diagram showing a connection form between the storage case and the breathing path. FIG. 5 is a longitudinal sectional view showing the storage case of the present embodiment mounted on the side surface of the open / close door of the respiratory function test apparatus of FIG. 6 is a view taken in the direction of arrow P in FIG. FIG. 7 is a vertical cross-sectional view of the side surface of the main body of the respiratory function testing device showing a state where the storage case is removed. FIG. 8 is a view taken in the direction of the arrow Q in FIG. FIG. 9 shows a joint between a female joint and a male joint of the respiratory function testing device of the present embodiment, (a) is an enlarged longitudinal sectional view showing a state in which insertion of the male joint is started with respect to the female joint, (b) ) Is an enlarged longitudinal sectional view showing a state in which insertion of the male joint is completed with respect to the female joint. FIG. 10 is an enlarged longitudinal sectional view showing a mold for molding the male joint of the present embodiment. FIG. 11 is a longitudinal sectional view showing the periphery of the joint portion between the male joint of the storage case and the female joint of the main body mounted on the side surface of the main body of the respiratory function testing device of the comparative example. 12 shows a joint between the female joint and the male joint in FIG. 11, (a) is an enlarged longitudinal sectional view showing a state in which insertion of the male joint is started with respect to the female joint, and (b) is with respect to the female joint. FIG. FIG. 13 is an enlarged longitudinal sectional view showing a mold for forming a female joint of a comparative example.

  Hereinafter, the respiratory function testing device of this embodiment will be described with reference to the drawings. FIG. 1 shows the external appearance of the respiratory function testing device of the present embodiment, where (a) is a front view and (b) is a plan view of (a). FIG. 2 is a perspective view showing a state in which the open / close door of the respiratory function test apparatus of FIG. 1 is opened. As shown in FIGS. 1 and 2, the respiratory function testing device 1 of the present invention includes a main body 11 that is a housing, a rolling seal spirometer 12 built in the main body 11, and the like. A keyboard 13, CRT 14, printer 15, and mouse 16 are placed on the upper surface of the main body 11, and a control unit (not shown) is provided inside the main body 11. An open / close door 17 is attached to the left side surface of the main body 11 by a hinge so as to be opened and closed, and the open / close door 17 is closed to shield the rolling seal spirometer 12.

  As shown in FIG. 1, a recess 18 that is long in the vertical direction is formed on the side surface of the door 17, and the storage case of the present invention is detachably attached to the recess 18. As shown in FIGS. 1 and 3, the outer wall 17 b of the open / close door 17 is provided with an intake tube connection port 38 b and an exhalation tube connection port 39 b at positions facing the recess 18. In addition, as shown in FIG. 2, an intake port 38 a and an exhalation port 39 a are provided on the inner wall 17 a of the open / close door 17.

  FIG. 4 is an explanatory diagram showing a schematic structure around the rolling seal spirometer 12 of the respiratory function testing device 1 of the present embodiment. As shown in FIG. 4, the rolling seal spirometer 12 includes a cylindrical cylinder 121 and a piston 123 supported by a bearing slide bearing 122, and a silicon rolling is provided between the cylinder 121 and the piston 123. Sealed with a seal 124. One end of the rolling seal 124 is joined to the inner wall surface of the cylinder 121, and the other end is joined to the side surface of the piston 123. The rolling seal 124 is curved following the movement of the piston 123, so that the sealed state of the gap between the cylinder 121 and the piston 123 is maintained. When the piston 123 moves, the potentiometer 125 detects the movement distance of the central axis 126 of the piston 123 in the axial direction.

  As shown in FIGS. 2 and 4, a silicon cushion member 212 is joined to the wall surface around the opening of the cylinder 121, and the opening of the cylinder 121 is surrounded by the annular cushion member 212. It has become. As shown in FIG. 4, when the opening / closing door 17 is closed, the cushion member 212 is deformed in contact with the inner wall 17 a of the opening / closing door 17, thereby reducing an impact when the opening / closing door 17 is closed. The cushion member 212 closes the gap between the inner wall 17a of the door 17 and the wall surface around the opening of the cylinder 121 by being in close contact with the inner wall a of the door 17. Accordingly, the cylinder chamber 211 in the cylinder 121 is sealed by the inner wall 17a of the open / close door 17 and the cushion member 212. When the subject inhales, the gas in the cylinder chamber 211 is supplied to the subject (the subject inhales the gas in the cylinder chamber 211), and when the subject exhales, the subject's exhaled air is discharged into the cylinder chamber 211. That is, the cylinder chamber 211 when the open / close door 17 is closed functions as a breathing space for the subject.

  As shown in FIG. 4, the inner wall 17a of the open / close door 17 is provided with an intake port 38a and an exhalation port 39a. The outer wall 17b of the open / close door 17 is provided with an intake tube connection port 38b and an exhalation tube connection port 39b. One end of a rubber tube 73C is connected to the intake port 38a, and the other end of the rubber tube 73C is connected to the intake tube connection port 38b. That is, the rubber tube 73C forms an inspiratory path that continues from the expiratory port 39a to the inspiratory tube connection port 38b for allowing inhalation to pass from the cylinder chamber 211 to the outside of the main body.

  One end of the rubber tube 73A is connected to the exhalation port 39a, and the other end of the rubber tube 73A is connected to the main body side inlet 72A provided in the recess 18 as shown in FIG. . As shown in FIG. 5, one end of the rubber tube 73B is connected to the main body side outlet 72B provided in the recess 18, and the other end of the rubber tube 73B is connected to the exhalation tube connection port 39b. ing. As will be described later, the storage case side inlet 63B of the storage case 5 is fluidly connected to the main body side outlet 72B, and the storage case side flow of the storage case 5 is connected to the main body side inlet 72A. By connecting the outlet 63A fluidly, when the storage case 5 is connected to the recess 18, the main body side outlet 72B and the main body side inlet 72A are connected to the storage case 5 (inside the storage case 5). It will be fluidly connected via the absorbent 51). In other words, the rubber tubes 73A and 73B and the storage case 5 connected thereto form an exhalation path connecting the exhalation tube connection port 39b to the exhalation port 39a for allowing exhalation to pass from the outside of the main body to the cylinder chamber 211. Yes.

  When the subject inhales through the breathing tube connected to the intake tube connection port 38b provided on the outer wall 17b of the open / close door 17, the piston 123 moves forward (opening direction) and the capacity of the cylinder chamber 211 is reached. As the (volume of the breathing space) decreases, the gas in the cylinder chamber 211 flows out of the intake port 38a and is supplied to the subject through the intake tube. When the potentiometer 125 detects the moving distance of the piston 123 at this time, the intake air amount is converted into an electric signal. Further, when the subject exhales through the exhalation tube connected to the exhalation tube connection port 39b, the exhalation of the subject reaches the storage case 5 from the exhalation tube connection port 39b and is absorbed when passing through the storage case 5. Carbon dioxide gas is absorbed by the agent 51 and further discharged from the exhalation port 39a into the cylinder chamber 211. Along with this, the piston 123 moves in the back direction (the direction opposite to the opening) and the capacity of the cylinder chamber 211 (the volume of the breathing space) increases. When the potentiometer 125 detects the moving distance of the piston 123 at this time, the expiration amount is converted into an electric signal. An electric signal of the potentiometer 125 is sent to a control unit inside the main body unit 11, calculated by a CPU (not shown), displayed on the CRT 14, printed out by the printer 15, and notified to a doctor, a laboratory technician, or the like.

  FIG. 5 is a longitudinal sectional view showing the storage case of the present invention mounted on the side surface of the main body of the respiratory function testing device 1 of FIG. 1, and FIG. 6 is a view taken in the direction of arrow P in FIG. FIG. 7 is a longitudinal sectional view of the side surface of the main body of the respiratory function testing device 1 showing a state in which the storage case is removed, and FIG. 8 is a view taken in the direction of the arrow Q in FIG. As shown in FIGS. 5 to 8, the storage case 5 of the present invention is a rectangular parallelepiped box that is long in the vertical direction, is formed of a transparent acrylic resin, and stores therein an absorbent 51 that absorbs carbon dioxide gas. Yes. A lid 521 is screwed into the upper plate 52 of the storage case 5, and the absorbent 51 is replaced by removing the lid 521.

  As a lower surface of the recess 18 of the opening / closing door 17, a load support surface 181 is formed that protrudes in the horizontal direction from the lower end of the side surface 186 that enters the inner wall 17 a side of the outer wall 17 b of the opening / closing door 17 and reaches the surface position of the main body 11. The bottom surface 531 of the bottom plate 53 of the storage case 5 is placed on the load support surface 181 so that the downward load of the storage case 5 is supported. A rod-shaped guide rail 182 having a rectangular cross section parallel to the insertion direction of the storage case 5 (left and right direction in FIGS. 5 and 7) is fixed to the load support surface 181 with bolts. A guide groove 532 that engages with the guide rail 182 is formed on the bottom surface 531 of the storage case 5, and the insertion position (left and right direction in FIG. 6) of the storage case 5 is positioned relative to the recess 18. The guide groove 532 opens in the left end surface (as viewed in FIG. 5) of the bottom plate 53.

  The upper surface 183 of the recess 18 is formed with a gap between the upper surface 522 of the upper plate 52 of the storage case 5. A bar-shaped guide rail 184 having a rectangular cross section is fixed to the upper surface 183 of the recess 18 with a bolt in parallel with the insertion direction of the storage case 5 (the left-right direction in FIGS. 5 and 7). The upper plate 52 of the storage case 5 is formed with an engaging projection 523 having a rectangular cross section that engages with the guide rail 184, and positions the insertion position (left and right direction in FIG. 6) above the storage case 5 with respect to the recess 18. .

  Hollow cylindrical male joints 61 </ b> A and 61 </ b> B protrude from the side surface 541 of the side plate 54 and are fixed to upper and lower portions of the side surface 541 of the side plate 54 of the storage case 5. The male joints 61A and 61B are formed of an elastic member having excellent oil resistance such as silicon rubber. The right ends (one end) of the male joints 61 </ b> A and 61 </ b> B are fixed to the side plate 54 by hollow cylindrical nuts 62 </ b> A and 62 </ b> B screwed into the side plate 54. The male joints 61A and 61B and the nuts 62A and 62B have the same shape, and the nut 62A is formed with a storage case side outflow port 63A through which exhaled gas flows out of the storage case 5, and the nut 62B has the exhaled air flowing into the storage case 5. A storage case side inlet 63B is formed.

  Further, hollow cylindrical female joints 71A and 71B are fixed to the side plate 185 with bolts at the upper and lower portions of the side plate 185 of the recess 18, and the left ends (the other ends) of the male joints 61A and 61B are the female joints 71A and 71. The inner circumferential surfaces 74A and 74B are fitted inside. The female joint 71A is formed with a main body side inlet 72A through which exhaled air flows into the main body, and the female joint 71B is formed with a main body side outlet 72B through which exhaled gas flows out of the main body. The main body portion side inlet 72A and the main body portion side outlet 72B are open to the side surface 186 of the side plate 185. The female joints 71A and 71B have the same shape, are made of a polyacetal resin having a smooth surface and strength. Rubber tubes 73A and 73B are connected to the left ends of the female joints 71A and 71B, and the rubber tubes 73A and 73B are connected to the respiratory path of the respiratory function testing device 1.

  FIG. 9 shows a joint between the female joints 71A and 71B and the male joints 61A and 61B of the respiratory function testing device of the present invention. FIG. 9A shows the insertion of the male joints 61A and 61B into the female joints 71A and 71B. FIG. 6B is an enlarged longitudinal sectional view showing a state in which insertion of the male joints 61A and 61B is completed with respect to the female joints 71A and 71B. As shown in FIG. 9, lip portions 65A and 65B projecting radially outward from the outer peripheral surfaces 64A and 64B of the male joints 61A and 61B are formed in an annular shape at the left ends (the other ends) of the male joints 61A and 61B. Yes. The lip portions 65A and 65B increase in diameter obliquely from the left end (other end) side of the male joints 61A and 61B toward the right end (one end) side, and the right end (one end) side is the inner peripheral surface of the female joints 71A and 71B. It is formed in a wedge shape in line contact with 74A and 74B.

  In the free state of the male joints 61A and 61B, the outer diameter of the right ends of the lip portions 65A and 65B is larger than the inner diameter of the inner peripheral surfaces 74A and 74B of the female joints 71A and 71B. Chamfered portions 75A and 75B are formed at the right ends of the inner peripheral surfaces 74A and 74B of the female joints 71A and 71B. In the free state of the male joints 61A and 61B, the inner diameter dimensions of the inner peripheral surfaces 74A and 74B of the female joints 71A and 71B (the right ends of the chamfered portions 75A and 75B) are larger than the outer diameter dimensions of the right ends of the lip portions 65A and 65B. Is also formed large. That is, in the configuration in which the diameter is increased from the left end to the right end of the chamfered portions 75A and 75B, the inner diameter of the left end (boundary with the inner peripheral surfaces 74A and 74B) is smaller than the outer diameter of the lip portions 65A and 65B. ) Is larger than the outer diameter of the lip portions 65A and 65B.

  Holding the handle 55 of the storage case 5 by hand and inserting the storage case 5 into the recess 18 of the open / close door 17, the storage case 5 is accurately positioned by being guided by the guide rails 182 and 184 of the recess 18. . When the storage case 5 is inserted into the recess 18, the male joints 61A, 61B of the storage case 5 are inserted into the female joints 71A, 71B of the recess 18, as shown in FIG. Then, the right ends of the lip portions 65A and 65B of the male joints 61A and 61B come into contact with the chamfered portions 75A and 75B of the female joints 71A and 71B. When the storage case 5 is further inserted into the recess 18, the right ends of the lip portions 65 </ b> A and 65 </ b> B are tilted in the direction of the arrow 66, and the left ends of the male joints 61 </ b> A and 61 </ b> B are slightly reduced in diameter in the direction of the arrow 67.

  As shown in FIG. 9 (b), when the storage case 5 is further inserted into the recess 18, the right ends of the lip portions 65A and 65B are further tilted in the direction of the arrow 66, so that the inner peripheral surfaces 74A and 74B of the female joints 71A and 71B The right ends of the lip portions 65A and 65B are in line contact. Even if there is a manufacturing error or attachment error of the female joints 71A and 71B and the male joints 61A and 61B, the right ends of the lip portions 65A and 65B fall in the direction of the arrow 66 while maintaining the line contact state to absorb the error. Therefore, since there is no leakage of the joint connecting portion and the insertion resistance is small, the storage case 5 can be easily attached and detached.

  Further, since the right ends of the lip portions 65A and 65B are hooked on the inner peripheral surfaces 74A and 74B of the female joints 71A and 71B, it is possible to prevent the storage case 5 from coming out of the recess 18 due to vibration or the like. When removing the storage case 5 from the recess 18, the handle 55 of the storage case 5 is held by hand and pulled out in the direction along the guide rails 182, 184, whereby the inner peripheral surface 74 </ b> A of the female joints 71 </ b> A, 71 </ b> B. 74B, the right ends of the lip portions 65A and 65B slide, and the storage case 5 can be easily removed from the recess 18 without feeling caught or excessive resistance. Here, since the inner diameter dimension is not reduced from the left end to the right end (the right end of the chamfered portions 75A and 75B) of the inner peripheral surfaces 74A and 74B of the female joints 71A and 71B, the storage case 5 can be easily removed from the recess 18. While being removable, it is easy to clean the inner peripheral surfaces 74A and 74B with the storage case 5 removed.

  FIG. 10 is an enlarged longitudinal sectional view showing a mold for molding the male joints 61A and 61B of the present embodiment. As shown in FIG. 10, the male joints 61 </ b> A and 61 </ b> B of the present invention are manufactured using a female mold 81 and a male mold 82. Since the female die 81 and the male die 82 for manufacturing the male joints 61A and 61B of the present invention have no reverse taper, it is easy to remove the male joints 61A and 61B from the female die 81 and the male die 82. Since the time can be shortened, the manufacturing cost can be reduced.

  A storage case storing an absorbent that absorbs carbon dioxide gas in the respiratory path uses a large storage case so that a large amount of absorbent can be stored in order to ensure the absorption efficiency of carbon dioxide gas. This storage case needs to be attached / detached from the body part of the respiratory function testing device in order to replace the absorbent, but since it is large, it is difficult to attach and detach easily without leakage at the connection port of the respiratory path of the body part Met. The recess 18 of the open / close door 17 and the attachment / detachment mechanism of the storage case 5 shown in the above embodiment can be joined to the breathing path without leakage and can be easily attached to and detached from the open / close door 17.

  Further, in this embodiment, the guide rail 182 provided on the load support surface 181 of the recess 18, the guide groove 532 provided on the bottom surface 531 of the storage case 5, and the guide rail 184 provided on the upper surface 183 of the recess 18. Further, the engaging projection 523 provided on the upper plate 52 of the storage case 5 facilitates positioning when the storage case 5 is connected to the recess 18. Also, when pulling out the storage case 5 from the recess 18, the pulling direction is defined, and the storage case 5 can be easily detached without feeling catching or excessive resistance. Furthermore, in this embodiment, since the storage case 5 can be installed in the recessed part 18 which entered the inner wall 17a side rather than the outer wall 17b of the open / close door 17, the main body part 11 can be saved in space.

[Comparative example]
FIG. 11 is a longitudinal sectional view showing the periphery of the joint between the male joint of the storage case and the female joint of the main body mounted on the side surface of the main body of the respiratory function testing device according to the comparative example, and FIG. 12 is the female of FIG. The joint of a joint and a male joint is shown, (a) is an enlarged vertical sectional view showing a state in which insertion of a male joint is started with respect to a female joint, and (b) is completed with insertion of a male joint into a female joint. It is an enlarged vertical sectional view showing a state. As shown in FIG. 11, the storage case 21 is a rectangular parallelepiped box that is long in the vertical direction, is formed of a transparent acrylic resin, and stores an absorbent 22 that absorbs carbon dioxide gas in its internal space. A lid 271 is screwed into the upper plate 27 of the storage case 21, and the absorbent 221 is replaced by removing the lid 271. A hollow cylindrical male joint 24 is formed on the side surface 23 of the storage case 21 so as to protrude leftward from the side surface 23. On the inner peripheral surface of the male joint 24, a storage case side outlet 25 is formed through which exhaled air flows from the storage case 21 to the main body.

  A cylindrical pipe 31 is attached to a side surface of the respiratory function testing device on the main body side, and a main body side inlet 32 through which exhaled air flows into the main body from the storage case 21 is formed on the inner peripheral surface of the pipe 31. Has been. The left end of a cylindrical female joint 33 formed of an elastic member is fixed to the right end outer peripheral surface of the pipe 31 by tight fitting, and the inner peripheral surface 34 at the right end of the female joint 33 is fixed to the outer peripheral surface 26 of the male joint 24. It fits outside. As shown in FIG. 12A, three annular protrusions 35 are formed on the inner peripheral surface 34 of the female joint 33. The annular protrusion 35 has a semicircular cross section and protrudes radially inward from the inner peripheral surface 34 of the female joint 33. The inner diameter dimension of the annular protrusion 35 is formed to be slightly smaller than the outer diameter dimension of the outer peripheral surface 26 of the male joint 24, and provides an appropriate tightening allowance.

  As shown in FIG. 12B, when the male joint 24 is inserted into the female joint 33, the contact surfaces of the three annular protrusions 35 are crushed and come into surface contact with the outer peripheral surface 26 of the male joint 24. As a result, the frictional resistance between the outer peripheral surface 26 and the annular protrusion 35 increases, and a large force is required to insert the male joint 24 into the female joint 33. Further, in order to prevent the seal from becoming insufficient due to manufacturing errors of the female joint 33, the male joint 24, etc., the tightening margin between the annular protrusion 35 and the outer peripheral surface 26 of the male joint 24 is increased. Since it will be manufactured, there is also a problem that the frictional resistance between the outer peripheral surface 26 and the annular protrusion 35 tends to increase.

  As shown in FIG. 13, the conventional female joint 33 is manufactured using a female mold 41 and a male mold 42, and an annular protrusion 35 of the female joint 33 is formed on the male mold 42. Therefore, an annular groove 43 having a semicircular cross section is formed. Since this annular groove 43 has a reverse taper with respect to the direction in which the female joint 33 is removed from the male mold 42, it is difficult to remove the female joint 33 from the male mold 42, and the work time is increased, resulting in an increase in manufacturing cost.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment. Needless to say, changes can be made without departing from the scope and spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Respiratory function inspection apparatus 11 ... Main-body part 12 ... Rolling seal type spirometer 13 ... Keyboard 14 ... CRT
DESCRIPTION OF SYMBOLS 15 ... Printer 16 ... Mouse 17 ... Opening / closing door 18 ... Recess 181 ... Load support surface 182 ... Guide rail 183 ... Upper surface 184 ... Guide rail 185 ... Side plate 186 ... Side surface 21 ... Storage case 22 ... Absorbent 23 ... Side surface 24 ... Male joint 25 ... Storage case side outlet 26 ... Outer peripheral surface 27 ... Upper plate 271 ... Lid 31 ... Piping 32 ... Main body side inlet 33 ... Female joint 34 ... Inner peripheral surface 35 ... Annular projection 38a ... Intake port 38b ... Intake tube connection Mouth 39a ... Expiratory port 39b ... Expiratory tube connection port 41 ... Female mold 42 ... Male mold 43 ... Annular groove 5 ... Storage case 51 ... Absorbent 52 ... Upper plate 521 ... Top 522 ... Upper surface 523 ... Engaging projection 53 ... Bottom plate 531 ... Bottom surface 532 ... Guide groove 54 ... Side plate 55 ... Handle 541 ... Side surfaces 61A, 61B ... Male joints 62A, 62B ... Nut 63A ... Storage case side outlet 63B ... Storage case side Inlet 64A, 64B ... Outer peripheral surface 65A, 65B ... Lip part 66, 67 ... Arrow 71A, 71B ... Female joint 72A ... Main part side inlet 72B ... Main part side outlet 73A, 73B, 73C ... Rubber tube 74A, 74B ... Inner peripheral surfaces 75A, 75B ... chamfered portion 81 ... female mold 82 ... male mold

Claims (5)

A respiratory function testing device for testing a subject's respiratory function,
The main body part of the respiratory function testing device is provided with a connection part for connecting a storage case containing an absorbent that absorbs carbon dioxide gas to the respiratory path,
The connecting portion has a cylindrical female joint,
The storage case includes a cylindrical male joint that is inserted into and fitted into the female joint,
The male joint is formed of an elastic member,
One end of the male joint is fixed to the storage case,
The other end of the male joint protrudes from the storage case, and its outer peripheral surface is fitted into the inner peripheral surface of the female joint,
The other outer peripheral surface of the male joint protrudes radially outward from the outer peripheral surface of the male joint, and the diameter of the male joint is increased obliquely from the other end side to the one end side. A respiratory function testing device, characterized in that a lip portion in line contact with the surface is formed. The respiratory function testing device according to claim 1,
The respiratory function testing device according to claim 1, wherein the inner diameter of the female joint is not reduced from the other end side to the one end side of the male joint in a state in which the male joint is fitted. A respiratory function testing device according to claim 2,
The connection part is a recess formed in a side surface of the main body part of the respiratory function testing device,
The recess has a load support surface on which a bottom surface of the storage case is placed and supports a downward load of the storage case,
The load support surface is provided with a first guide rail formed parallel to the insertion direction of the storage case,
A respiratory function testing device, characterized in that a guide groove that is formed in parallel to the insertion direction of the storage case and engages with the first guide rail is provided on the bottom surface of the storage case. A respiratory function testing device according to claim 3,
A second guide rail formed in parallel with the insertion direction of the storage case is provided on the upper surface of the recess,
An engagement projection that engages with the second guide rail is formed on the upper part of the storage case 5. The respiratory function testing device according to claim 3 or 4,
The recess is
A respiratory function testing device, wherein the respiratory function testing device is attached to the main body of the respiratory function testing device so as to be openable and closable, and is formed on a side surface of an open / close door that shields the respiratory space.

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