JP2011251056A - Medical gas piping connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical gas piping connection device which provides improved work efficiency by simplifying insertion/extraction operation of an attachment plug.SOLUTION: A gas supply socket 2 includes: a socket body 6 with a gas inflow port 4 and a gas ejection port 5; a valve element 7 which is provided in the socket body 6 in a repulsively biased condition along the axial line L direction of the ejection port 5 and which seals the ejection port 5 in the repulsively biased condition and, when force against the elasticity acts on the valve element, moves in a direction reverse to the repulsively biased direction and acts to open the gas ejection port 5; and a socket part 8 which is concentrically connected to the ejection port 5 in the axial line L direction thereof and enables the attachment plug 3 to be air-tightly inserted into the socket part. The socket part 8 and the attachment plug 3 include lock means to retain the inserted attachment plug 3 at two different positions along the axial line L direction.

Description

  The present invention provides a medical gas in an outlet device that is provided on a wall portion of a treatment room and a general hospital room and supplies medical gas such as oxygen, laughter, and air necessary for treatment, or sucks filth and the like The present invention relates to a pipe connection device.

  A typical prior art of a medical gas pipe connection device is disclosed in Patent Document 1. Such a medical gas pipe connection device includes a gas supply socket installed on a wall of a hospital room and a gas receiving plug that is detachably attached to the gas supply socket. As the medical gas, for example, oxygen gas, laughter, air, and the like are used. A suction force for sucking dirt and the like is guided to the plug for receiving gas. A plurality of gas supply sockets, which are also referred to as outlets for guiding each of these medical gases and suction power, are installed in the walls of treatment rooms and general hospital rooms, etc., and a gas receiving plug corresponding to each gas supply socket is installed. Plugs are plugged in as needed.

  The plug is inserted to a predetermined position with respect to the gas supply socket, whereby the valve body accommodated in a state of being elastically biased in the gas supply socket is inserted into the elastic force. The gas discharge port is opened by retreating against the gas, and the medical gas introduced into the gas supply socket is allowed to flow into the gas pipe line in the plug through the discharge port and used for treatment. It is configured to be able to. After use, by removing the plug from the gas supply socket, the valve body returns to the position where the outlet is sealed by the elastic urging force, and the plug is removed at a predetermined storage position. Stored in.

JP-A-4-341273

  In such a medical gas pipe connection device, each time the medical gas is used, the insertion plug corresponding to the predetermined gas is taken out from the storage position and inserted into the corresponding gas supply socket. Depending on the treatment mode, when the use of medical gas is frequently repeated, the work of removing the plug from the storage position and inserting it into the predetermined gas supply socket is repeated in a short time. Such an operation is very troublesome and requires a lot of time and effort.

  An object of the present invention is to provide a medical gas pipe connection device capable of simplifying the insertion / removal operation of the plug and improving the efficiency of the treatment work.

The present invention relates to a medical device including a gas supply socket installed on a wall of a hospital room and from which a gas is guided or sucked by a gas supply source, and an insertion plug that is detachably attached to the gas supply socket. A gas pipe connecting device,
The gas supply socket is
A socket body with a gas inlet and outlet;
Installed in the socket body in a state of being elastically urged along the axis of the discharge port, sealing the discharge port in this state and resisting the force of elastically urging When a force is applied, a valve body that operates to move in a direction opposite to the direction of the elastically biased and open the discharge port;
A cylindrical socket portion that is coaxially connected in the axial direction to the discharge port and is capable of airtight insertion of the plug.
The socket part and the plug are provided with locking means for holding the plug inserted at two different holding positions along the axial direction,
The two different holding positions by the locking means include a first position for holding the plug inserted into the socket part at a position where the tip does not contact the valve body, and an insertion plug into the socket part. The inserted plug is pushed against the force of the resiliently biased valve body, the discharge port is opened, and the gas in the socket body passes through the discharge port. The medical gas pipe connection device is characterized in that it is set at a second position to be held in a state where it can flow into the plug.

  According to the present invention, the plug is detachably attached to the gas supply socket installed on the wall of the hospital room. And the mounting state with respect to the gas supply socket of an insertion plug can be hold | maintained in the two different positions along an axis line by the said locking means. The first holding position holds the insertion plug inserted into the socket portion coaxially connected to the gas discharge port of the socket body along the axis thereof in a state where the tip does not contact the valve body. Position. Therefore, in this state, the insertion plug is held in the socket portion in an inserted state, but does not act on the valve body, and the discharge port can be kept in a closed state while being closed. The second holding position is such that the plug plug inserted into the socket portion has its tip pressed against the elastic force against the valve body, and the discharge port is opened to open the socket body. It is a position to hold the gas in a state where it can flow into the plug through the outlet.

  When the insertion plug is further pushed in from the first position, the valve body is actuated to open the discharge port, and the gas or suction force introduced from the gas supply source to the socket body is changed through the discharge port. It is guided into the plug and used for the necessary part. When stopping the use, when the lock state of the plug is released by the locking means, the valve body returns to the position where the discharge port is closed by the action of the elastic force, and the plug is connected to the first plug. 1 is held at a holding position, and a standby state is set. This eliminates the need for repeating cumbersome operations such as returning the plug to a separately prepared storage position or taking it out of the storage position, thereby improving the efficiency of the treatment operation.

  Further, the locking means of the present invention is partially biased in a state in which the locking means is urged to move in the direction of one radial line on the peripheral wall portion of the socket portion and close to the axis of the socket portion. Two locking members held so as to project inward from the inner wall surface of the socket portion, and a portion formed on the outer peripheral portion of the insertion plug and projecting inward from the inner wall surface of the two locking members. It is characterized by comprising a mating engaging groove.

  According to the present invention, since the lock means is constituted by the two lock members and the engagement groove portion, the holding state at the two different holding positions in the socket portion of the plug can be easily realized. Can do. The two lock members are partially biased to the peripheral wall portion of the socket portion so as to be movable in one radial direction and in a direction close to the axis of the socket portion. Since it is held so as to protrude inward from the inner wall surface of the part, just by inserting the plug into the socket part, either one of the lock members is engaged with the engagement groove part, The plug can be securely held at one of the two holding positions, and a stable holding state can be maintained.

  Further, according to the present invention, the gas supply socket includes a casing to which the socket portion is detachably connected, and the casing is located upstream of the valve body pressed by the insertion plug in the gas supply direction. When the socket portion is mounted on the casing, a valve hole is opened, and when the socket portion is detached from the casing, a flow path opening / closing means is provided to close the valve hole by a gas pressure from a gas supply source. It is characterized by being able to.

  According to the present invention, when the socket part is attached to the casing, the valve hole is opened in the gas supply socket, and when the socket part is detached from the casing, the valve hole is closed by the gas pressure from the gas supply source. Since the flow path opening / closing means is provided, it is not necessary to use a spring for holding the valve body such as a valve body for opening and closing the valve hole, and the number of parts is reduced and the configuration of the gas supply socket is simplified. be able to.

  Further, the present invention is characterized in that the gas supply socket is provided with display means for identifying and displaying the insertion holding state at the two holding positions of the insertion plug.

  According to the present invention, since the insertion holding state of the insertion plug with respect to the gas supply socket is displayed by the display means, the insertion plug is held at the first holding position or held at the second holding position. Can be easily identified from the outside of the apparatus. As a result, the state in which the plug is held in the gas supply socket is a state in which the gas supply or suction force is blocked, or the state in which the gas is supplied or the suction force is guided. It can be easily and reliably recognized by the display of the display means.

  According to the medical gas pipe connection device according to the present invention, each time the medical gas or suction force is used, the troublesome operation of taking out the plug from the storage position and inserting it into the gas supply socket is unnecessary. The operation of the plug can be simplified to improve the efficiency of the treatment work. For example, when the medical gas or suction force is not used, the insertion plug is held in the first holding position, and when the medical gas or suction force is used, the difference held at the first holding position is set. By further pushing the push-in plug, it is possible to supply medical gas or suction force. Therefore, when the use of medical gas is frequently repeated depending on the treatment mode, the insertion / extraction operation is simplified. This point is particularly effective and has a large profit.

It is a longitudinal section of medical gas piping connection device 1 of one embodiment of the present invention. It is the front view seen from the arrow II direction of the gas supply socket 2 in FIG. FIG. 6 is an exploded perspective view showing a state in which the locking pins 27 to 30 are detached from the socket portion 8. FIG. 4 is a longitudinal sectional view of an operating ring 19. 5A and 5B are diagrams for explaining the operating principle of the locking means 33, FIG. 5A shows a state in the middle of insertion of the plug 3, and FIG. 5B shows the plug 3 held in the first position. FIG. 5C shows a state in which the plug 3 is held at the second position.

  FIG. 1 is a longitudinal sectional view showing a medical gas pipe connection device 1 according to an embodiment of the present invention, and FIG. 2 is a front view of the gas supply socket 2 in FIG. 3 is an exploded perspective view showing a state in which the locking pins 27 to 30 are detached from the socket portion 8. The illustrated medical gas pipe connection device 1 includes a gas supply socket 2 accommodated in a housing generally installed on a wall of a hospital room, and a plug 3 that is detachably attached to the gas supply socket 2. Consists of. Thus, instead of the configuration in which the illustrated medical gas pipe connection device 1 is directly provided on the wall of the hospital room, in another embodiment of the present invention, the medical gas pipe connection device 1 is replaced with another medical use. The gas pipe connection device and the electrical wiring connection device may be arranged side by side to be unitized and installed on the hospital room wall.

  The gas supply socket 2 includes a socket body 6 having a gas inlet 4 and a discharge port 5, and is elastically biased along the axis L of the discharge port 5 in the socket body 6. It includes an installed valve body 7 and a cylindrical socket portion 8 connected to the discharge port 5 coaxially with its axis L so that the plug 3 can be inserted in an airtight manner.

  The socket body 6 includes a base body 9 fixed to the wall of the hospital room and a casing 10 fixed to the base body 9, and the base body 9 and the casing 10 substantially constitute a valve box. The casing 10 includes a casing main body 41, a spherical valve body 42 accommodated in the casing main body 41, a holder 44 having a valve hole 43 opened and closed by the valve body 42, and a holder so as to surround the valve hole 43. And an annular seal member 45 attached to 44, and a spring 46 that biases the valve body 42 toward the seal member 45.

  The valve body 42 is made of metal or synthetic resin. The seal member 45 is a member having a circular cross section made of a flexible and intermittent material, such as rubber, synthetic rubber, or synthetic resin, and is realized by an O-ring. Such a sealing member 45 constitutes a valve seat on which the valve body 42 is seated. The spring 46 is realized by a compression coil spring, and keeps the valve body 42 seated on the seal member 45. Including the valve body 42, the holder 44, the seal member 45, and the spring 46, a flow path opening / closing means is configured upstream of the valve body 7 in the gas flow direction, that is, on the supply source 11 side.

  The casing main body 41 accommodates a valve body 42 and a spring 46, and defines a base portion 48 that defines a valve chamber 47 in which the holder 44 is mounted together with the seal member 45, and a fitting space 49 that communicates with the valve chamber 47 in the axial direction. And a cylindrical tube portion 50. The base 48 is also formed with a connection hole 51 in which the pipe joint 40 is welded or packed and connected in an airtight manner, and a passage 52 communicating the connection hole 51 and the valve chamber 47.

  An inner screw portion 60 in which an inner screw is engraved is formed on the inner peripheral portion of the cylindrical portion 50, and an outer screw portion 61 in which an outer screw is engraved is formed in the socket body 6. The external thread portion 61 of the socket body 6 is screwed into the internal thread portion 60 of the casing 10, and the socket body 6 is detachably attached to the casing 10. The casing 10 and the socket body are hermetically connected by an annular sealing member 68 interposed therebetween. The seal member 68 is made of an O-ring.

  A valve seat ring 64 is screwed onto the filter 12 and is accommodated in the mounting hole 66 of the socket body 6 together with the rubber packing 15 a and is secured by a nut 67. The nut 67 has an external thread portion 62 in which an external thread is engraved on the outer peripheral portion, and this external thread portion 62 is screwed into an internal thread portion 63 in which an internal thread is engraved in the inner peripheral portion of the socket body 6. The filter 12 is detachably attached to the socket body 6.

  The filter 12 is made of, for example, a porous material obtained by sintering metal powder, and protrudes outward in the axial direction from the bottom portion 12b, a cylindrical portion 12a having a cylindrical shape, a bottom portion 12b that closes one end portion in the axial direction of the cylindrical portion 12a. A cylindrical projection 12c is formed, and a flange 12d is projected radially outward from the other axial end of the cylindrical portion 12a. These cylindrical portion 12a, bottom portion 12b, protrusion 12c and flange 12d are integrally formed. The flange 12d of the filter 12 is pressed by a nut 67 screwed to the inner threaded portion 63 of the socket body 6 and is prevented from being removed.

  The casing 10 is provided with a pipe joint 40 having the inlet 4, and a predetermined gas supply source 11 is connected to the casing 10 via a pipe body such as a tube connected to the pipe joint 40. A medical gas such as oxygen, air, and laughter is introduced into the casing 10 at a predetermined gas pressure from the supply source 11, and a suction force for sucking dirt and the like is introduced.

  In the casing 10, the filter 12 is installed as described above, and the base 12 b of the filter 12 is supported by being in contact with the bottom 12 b of the filter 12. The valve body 7 is attached. The valve body 7 is elastically biased toward the discharge port 5 along the axis L by the compression spring 13 held by the filter 12. A valve formed on the inner peripheral edge of the discharge port 5 with an O-ring 7a attached to the distal end side of the valve body 7 in a state where the valve body 7 is elastically biased. The seat 5a is elastically brought into contact with the seat 5a, whereby the discharge port 5 is closed.

  Between the discharge port 5 in the socket body 6 and the cylindrical portion 73 of the socket portion 8, the inner diameter is smaller than that of the insertion cylindrical portion 8 b, and the cylindrical tip portion 3 c of the plug 3 is connected to the axis L. A throttle portion 14 that can be inserted in parallel and holds the packing 15 from the downstream side in the insertion direction (left side in FIG. 1) is formed. The plug 3 is inserted into the inner peripheral portion of the throttle portion 14. In order to maintain the airtightness between the throttle portion 14 and the valve seat ring 64, a packing 15a is mounted. The socket portion 8 is fixed to the socket body 6 coaxially with the discharge port 5 and the throttle portion 14, and the opening on the opposite side to the discharge port 5 is an insertion port 8 a, and the insertion port 8 a The plug 3 can be removably inserted through the connector.

  FIG. 4 is a longitudinal sectional view of the operating ring 19. The operating ring 19 has long slot-shaped first guide holes 15, 16, which are inclined in a direction away from a virtual plane including the axis L from the front side toward the discharge port 5. 17 and 18 are formed. The pair of guide holes 15 and 16 in the first guide holes are formed such that their longitudinal axes are parallel to each other and have the same shape and size, and the other pair of guide holes 17 and 18 is the guide hole. It is formed on the peripheral wall of the socket portion 8 so as to be plane-symmetric with respect to a virtual plane including the pair of holes 15 and 16 and the axis L.

  An operating ring 19 is externally mounted on the socket portion 8 so as to be slidable along the axis L, and a cover ring 20 is integrally fixed to the operating ring 19. A compression spring 22 is mounted between the cover ring 20 and the base body 9 in a compressed state, so that the operating ring 19 moves together with the cover ring 20 along the axis L toward the tip of the socket portion 8. It is in a state where it is spring-biased spontaneously.

  In the peripheral wall portion of the socket portion 8, long hole-shaped second guide holes 23, 24, 25, 26 extending in a direction perpendicular to and away from the virtual plane including the axis L are formed. The pair of guide holes 23 and 24 in the second guide holes 23 to 26 is formed such that their longitudinal axes are parallel to each other and have the same shape and the same size, and the other pair of guide holes 25 and 26 is Are formed on the peripheral wall of the operating ring 19 symmetrically with respect to a virtual plane including the pair of the guide holes 23 and 24 and the axis L. The first guide holes 15, 16; 17, 18 adjacent to each other along the axis L and the second guide holes 23, 24; 25, 26 have the same pitch, and On the other hand, in a state where no external force is applied in the direction of the axis L, the portions of the first guide holes 15, 16; 17, 18 and the second guide holes 23, 24; As shown in FIG. 1, they are formed so as to communicate with each other in a direction perpendicular to the paper surface when viewed from the side.

  The operating ring 19 is also formed with a pair of guide long holes 71a and 71b extending in the direction of the axis L with an interval of 180 ° in the circumferential direction. Screws 72a and 72b having an axis perpendicular to the axis L are fitted in the peripheral wall portion of the socket portion 8 in the guide long holes 71a and 71b, respectively, so that the operating ring 19 is movable in the direction of the axis L. Is done.

  As described above, in the portion where the first guide holes 15, 16, 17, 18 and the second guide holes 23, 24, 25, 26 overlap, the rod-like locking pins 27, whose cross section is a parallelogram, 28, 29, and 30 are held in a state in which both end portions thereof are inserted. These locking pins 27, 28, 29, and 30 are spring-biased in directions close to each other with respect to a virtual plane including an axis L perpendicular to the paper surface of FIG. 1, and constitute locking means together with an engagement groove 33 described later. To do. In the insertion holding state, a part of each locking pin 27, 28, 29, 30 protrudes from the inner wall surface of the socket portion 8 to the imaginary plane including the axis L, that is, inward. In another embodiment, the locking pins 27, 28, 29, 30 may have a circular cross section.

  The insertion plug 3 is formed of a hollow cylindrical body, and a cross-section of the grip portion 3a has a columnar shape, and an insertion probe 3b is connected to the front side (insertion side) of the grip portion 3a. The tip end side of 3b is formed integrally with a straight cylindrical tip 3c through a tapered truncated cone 3g, and a gas inlet 3d is formed at the tip 3c. The insertion plug 3 is inserted to a position where the distal end portion 3c presses the annular portion 7b of the valve body 7 together with the packing 15a, and when the distal end portion 3c is held at this position by the locking means 33, the distal end portion 3c causes the valve The body 7 is pressed against the elastic force of the compression spring 13, whereby the valve body 7 moves backward and the discharge port 5 is opened. The valve body 42 on the supply source 11 side is supported in a state of being separated from the seal member 45 by the projection 12c of the filter 12, and is set to a normally open state. As described above, the downstream valve body 7 is pressed and opened by the plug 3 as described above, so that the medical gas in the casing 10 passes through the outlet 5 and the inlet 3d and enters the plug 3. To the passage 3e.

  One end of a flexible tube (not shown) is connected to the proximal end side of the grip portion 3a, and medical gas is guided to a therapeutic instrument attached to the other end of the flexible tube, such as an oxygen mask. And released for prescribed treatment. The throttle part 14 of the socket part 8 is connected to the insertion port 8a, and an insertion cylinder part 8b into which the grip part 3a is inserted is formed, and the lock formed in a circular cross section in the insertion cylinder part 8b. An operating space 8c for the means 33 is formed.

  Optical sensors 34 and 35 whose optical axes are parallel to the locking pins 27 and 28 are embedded in the peripheral wall portion of the socket portion 8 in the vicinity of the insertion direction side of the first guide holes 15 and 16. . The optical sensors 34 and 35 can be realized by a known optical sensor such as a photo interrupter, which includes a light emitting part and a light receiving part, and is opposed to the locking pins 27 and 28 on the peripheral wall of the socket part 8. Each pair of light emitting portion and light receiving portion is embedded in opposition to each other. In FIG. 1, only one of the light emitting unit and the light receiving unit is illustrated.

  As shown in FIG. 2, the cover ring 20 has an identification mark 36 printed on the surface for clearly indicating that it is for oxygen gas. In addition, display sections 37 and 38 as display means made of light emitting diodes (abbreviated as LEDs) having different emission colors are provided on the two cut surfaces. Based on the detection signals of the optical sensors 34 and 35, for example, when one of the display units 37 is lit, the display units 37 and 38 indicate that the plug 3 is in a first position described later. When the other display unit 38 is lit, it is configured to indicate that it is also in the second position. It should be noted that the number of display portions is one, and the emission color is changed according to the two kinds of positions, or “gas closed” (first holding position) and “gas opened” (second holding position). It is also possible to adopt a display form using specific characters such as.

  A circular hole 20a is formed at the center of the cover ring 20, and the end of the socket portion 8 is exposed from the circular hole 20a. From the insertion port 8a of the socket part 8, the insertion cylinder part 8b, the working space 8c, the throttle part 14, the valve body 7 and the locking pins 27, 28; The When the insertion plug 3 is inserted into the gas supply socket 2, it is inserted from the distal end portion 3c into the insertion port 8a of the socket portion 8 along the direction of arrow II shown in FIG. And the grip part 3a is inserted so that it may align with the said insertion cylinder part 8b. When the plug 3 is not used for oxygen gas, the grip portion 3 of the plug 3 is provided with a plurality of pins (2 in this embodiment) 76a and 76b at different positions in the circumferential direction. A plurality (2 in this embodiment) of pin holes 75a and 75b are provided at different positions in the circumferential direction, and depending on the positions of the pins 76a and 76b and the pin holes 75a and 75b in the circumferential direction, the type or suction force of the medical gas is affected. Since the insertion plug 3 and the gas supply socket 2 are configured to be prevented from being erroneously attached, different types of insertion plugs are not erroneously attached to the socket portion 8 by mistake.

  Next, the behavior of the locking means 33 when the insertion plug 3 is inserted into or removed from the gas supply socket 2 and the holding state at the first and second positions will be described with reference to FIGS. This will be described with reference to 5 (c). As shown in FIG. 1 and FIGS. 5 (a) to 5 (c), the locking groove portion 32 constituting the locking means 33 is an annular recess formed around the axis L on the outer peripheral portion of the insertion plug 3. It is a groove and is smaller than the inner diameter of the working space 8c.

  When the plug 3 is thus inserted from the state shown in FIG. 1 into the socket 8 along the axis L in the direction of the arrow II, the locking groove 32 is connected to the locking pin 27 (or 29). ) To a position close to the portion protruding into the socket portion 8. If the plug 3 is inserted as it is, the actuating ring 19 is pushed toward the socket body 6 against the elastic force of the compression spring 22, and the locking pins 27 and 29 on the downstream side are engaged. The locking pin 27 (or 29) is fitted into the stop groove portion 32, and the first guide hole 23 (or 25) and the first guide hole 15 (or 17) are subjected to the regulating action of the first guide. It moves to the socket body 6 side along the longitudinal direction of the hole 15 (or 17). At this time, the locking pin 28 (or 30) similarly moves along the longitudinal direction of the first guide hole 16 (or 18). By such pushing operation of the cover ring 20, the operating ring 19 slides and moves toward the socket body 6 along the outer periphery of the socket portion 8 while being compressed by the compression spring 22.

  As the operating ring 19 slides, the locking pins 27, 28, 28, 28, 29 and 30 slide and move in the first guide holes 15, 16, 17, and 18 so as to be embedded in the peripheral wall portion of the socket portion 8, and a portion protruding from the inner wall surface of the socket portion 8 is No state. Therefore, there is no obstacle to the insertion of the insertion plug 3, and the locking groove 32 is directly upstream of the first guide hole 15 (or 17) in the insertion direction II as shown in FIG. 5A. The plug 3 is smoothly inserted until it is positioned on the side.

  In this state, the operating ring 19 returns to the original position together with the cover ring 20 due to the compression restoring force of the compression spring 22, and accordingly, the locking pins 27, 28, 29, 30 are moved to the second guide hole 23. , 24, 25, 26 and the first guide holes 15, 16, 17, 18, and a part thereof is inward from the inner wall surface of the socket portion 8 as shown in FIG. Return to the protruding position.

  When the plug 3 is further inserted from this state, as shown in FIG. 5 (b), the plug is fitted into the locking pins 27 and 29, and the plug 3 is moved to the axis L by the regulating action. The holding position is held in a state in which the movement in the pulling direction is prevented, and this holding position is set as the first position. In the state of being held at the first position, the distal end portion 3c of the insertion plug 3 is not yet in contact with the valve body 7, and the discharge port 5 remains closed. In a normal use state, a state in which the plug 3 is held at the first position is a standby state.

  When gas supply is required or when suction force is introduced, when the insertion plug 3 is further pushed in from the state of FIG. 5B, the locking pins 27, 28, 29 and 30 are retracted into the peripheral wall of the socket portion 8, and the tip portion 3 c reaches a position where it contacts the valve body 7. When the plug 3 is pushed against the elastic force of the compression spring 13 in this abutting state, the valve body 7 is retracted, the O-ring 7a is separated from the valve seat 5a, and the discharge port 5 is Opened.

  In this state, the operating ring 19 is returned to the original position together with the cover ring 20 by the compression restoring force of the compression spring 22, and accordingly, the locking pins 27, 28, 29, 30 are moved to the second guide holes 23, 5, 25, 26 and the first guide holes 15, 16, 17, 18, and a part of the socket portion 8 protrudes from the inner wall surface as shown in FIG. Return.

  The locking groove 32 is positioned between the locking pins 28 (or 30), and the locking groove 32 is positioned close to the socket body 6 side portion of the locking pins 28 (or 30). Due to the restricting action of the locking pin 28 (or 30) with respect to the locking groove 32, the plug 3 is held in a state in which the insertion plug 3 is prevented from moving in any direction along the axis L, and this holding position is the second position. The holding position. At this time, the valve body 42 on the supply source 11 side is set in the valve open state away from the seal member 45 in a state where the gas supply socket 2 is assembled. Therefore, when the plug body 3 is inserted and the valve body 7 is pressed, the gas passes through the valve hole between the valve body 7 and the valve seat 5a and passes through the gas pipe line in the plug plug 3 for a predetermined treatment target. Used by being guided to the site.

  Further, when the cover ring 20 is pressed, the engagement state is released to the engagement groove portion 32 of the engagement pin on the downstream side in the insertion direction of the insertion plug 3 (left side in FIG. 1), and the insertion plug 3 is supplied with gas. When removed from the socket, the valve body 7 is closed by the spring force, and the outflow of gas is blocked.

  As shown in FIG. 5 (b), when the plug 3 is in the first holding position, the locking groove 32 blocks the optical path of the optical sensor 34, and the other optical sensor 35 has an optical path thereof. It is in a state where it is not shut off, and it can be displayed on the display units 37 and 38 that the plug 3 is held at the first holding position by these two types of detection signals from the light receiving unit. Further, as shown in FIG. 5C, when the plug 3 is in the second position, the optical path of both the optical sensors 34 and 35 is blocked by the locking groove 32, and the light receiving portion With these two types of detection signals, the display units 37 and 38 can display that the plug 3 is held at the second holding position.

  Therefore, the surgeon looks at the display states of the display portions 37 and 38 to determine whether the insertion plug 3 is held at the first or second position, or the supply of gas is blocked. It is possible to easily determine whether the state is in a state of being supplied or not. Further, if the insertion operation of the insertion plug 3 is performed while viewing the display portions 37 and 38, the insertion plug 3 can be accurately held at any one of the desired first and second positions. Can do.

  When removing the plug 3, the cover ring 20 is pushed in the same manner as described above so that the locking pins 27, 28, 29, 30 are retracted into the peripheral wall portion of the socket portion 8. Pull-out operation can be performed. At this time, when the insertion plug 3 is removed from the second holding position in FIG. 5C to the first holding position in FIG. 5B and is held at this position, the same as described above. If this is done while viewing the display units 37 and 38, this position setting is made accurately. Further, when the insertion plug 3 is removed, the inclination angle α of the outer peripheral surface of the truncated cone portion 3g formed from the locking groove portion 32 to the tip portion 3c is determined by the sliding of each locking pin 27, 28, 29, 30. Since it is gentler than the inclination angle θ of the moving surface, the cover pin 20 can be retracted from the insertion pins 3 by pushing the cover ring 20 and the insertion plug 3 can be pulled out and removed smoothly. it can.

  In the embodiment, the example in which the locking pins 27, 28 and 29, 30 constituting the locking means 33 are provided at the opposing positions of the socket portion 8 is not limited to this. It may be arranged at an appropriate position in the direction. In addition, the example in which the locking means 33 is configured by the locking pins 27 to 30 and the locking groove portion 32 has been described, but instead of this, the peripheral wall portion of the socket portion 8 protrudes and protrudes from the inner wall surface. It is also possible to configure a combination of a plurality of balls provided and the locking groove 32, and it is also possible to configure the lock member by a combination of a locking pin and a ball.

  Furthermore, although the example which provided the display parts 37 and 38 in the cover ring 20 was described, the medical gas piping connection apparatus with the hospital room wall part near the medical gas piping connection apparatus 1 and other connection apparatuses as mentioned above. When 1 is unitized, it may be provided on a unit frame or the like. Further, instead of the optical sensors 34 and 35 for position detection, other mechanical sensors, magnetic sensors, or electrical sensors can be used.

  In the above-described embodiment, the locking pins 27 to 30 whose cross section perpendicular to the longitudinal direction is a parallelogram have been described. However, other embodiments of the present invention are not limited to this, and other shapes such as a hook It may be in the form of a rod having a cross section, the cross section may be a quadrangle, or another polygon. Further, a plurality (2 in this embodiment) of pins 76a and 76b are provided in the grip portion 3 of the plug 3 in the circumferential direction, and a plurality (2 in this embodiment) of the pin holes 75a are provided in the socket portion 8. 75b are provided in different positions in the circumferential direction, and the insertion plug 3 and the gas supply socket 2 are erroneously attached to the type or suction force of medical gas depending on the circumferential positions of the pins 76a and 76b and the pin holes 75a and 75b. May be configured to prevent. Moreover, instead of the configuration in which the pins 76a and 76b and the pin holes 75a and 75b are fitted, the inner peripheral shape of the insertion tube portion 8b of the socket portion 8 and the outer peripheral shape of the insertion probe 3b of the insertion plug 3 are Depending on the type of gas or suction force, the cross section perpendicular to the axis can be changed to a polygon, such as a rectangle, hexagon, circle, or ellipse. You may make it do.

  In still another embodiment of the present invention, when the socket portion 8 is attached to the casing 10, the valve body 42 is displaced to open the valve hole 43, and when the socket portion 8 is detached from the casing 10, the compression spring 46 is moved. It may be configured to operate at a set pressure or the like so as to close the valve hole by the gas pressure from the gas supply source 11 without being provided.

  When the socket portion 8 is attached to the casing 10 by such a channel opening / closing means, the valve hole 43 is opened, and when the socket portion 8 is detached from the casing 10, the valve hole 43 is caused by the gas pressure from the gas supply source 11. Can be closed, and a spring for holding a valve such as a valve body for opening and closing the valve hole 43 is not required, reducing the number of parts and simplifying the configuration of the gas supply socket. Can do.

DESCRIPTION OF SYMBOLS 1 Medical gas piping connection apparatus 2 Gas supply socket 3 Insertion plug 4 Gas inflow port 5 Gas discharge port 6 Socket main body 7,42 Valve body 8 Socket part 15,16,17,18 1st guide hole 23, 24, 25, 26 Second guide hole 27, 28, 29, 30 Locking pin 32 Locking groove 33 Locking means 37, 38 Display L axis

Claims (4)

A medical gas pipe connection device including a gas supply socket installed on a wall of a hospital room, in which gas is guided from a gas supply source or suction force is guided, and an insertion plug that is detachably attached to the gas supply socket Because
The gas supply socket is
A socket body with a gas inlet and outlet;
Installed in the socket body in a state of being elastically urged along the axis of the discharge port, sealing the discharge port in this state and resisting the force of elastically urging When a force is applied, a valve body that operates to move in a direction opposite to the direction of the elastically biased and open the discharge port;
A cylindrical socket portion that is coaxially connected in the axial direction to the discharge port and is capable of airtight insertion of the plug.
The socket part and the plug are provided with locking means for holding the plug inserted at two different holding positions along the axial direction,
The two different holding positions by the locking means include a first position for holding the plug inserted into the socket part at a position where the tip does not contact the valve body, and an insertion plug into the socket part. The inserted plug is pushed against the force of the resiliently biased valve body, the discharge port is opened, and the gas in the socket body passes through the discharge port. A medical gas pipe connecting device, characterized in that the medical gas pipe connecting device is set at a second position to be held in a state where it can flow into the plug.   The locking means is partly inside the socket part in a state in which the locking part is elastically biased to the peripheral wall part of the socket part so as to be movable in a radial direction and close to the axis of the socket part. Two locking members that are held so as to protrude inward from the wall surface, and a member that is formed on the outer peripheral portion of the insertion plug and that can be engaged with a portion of the two locking members that protrudes inward from the inner wall surface. The medical gas pipe connection device according to claim 1, wherein the medical gas pipe connection device is configured by a groove portion.   The gas supply socket has a casing to which the socket portion is detachably connected, and the casing is provided on the upstream side of the gas supply direction with respect to the valve body pressed by the insertion plug, and the socket When a part is attached to the casing, a valve hole is opened, and when the socket part is detached from the casing, a flow path opening / closing means for closing the valve hole by a gas pressure from a gas supply source is provided. The medical gas pipe connection device according to claim 2.   4. The gas supply socket is provided with display means for identifying and displaying an insertion holding state at the two holding positions of the insertion plug. The medical gas piping connection device described in 1.

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