Shut-off valve

Abstract

To create an on / off valve with improved operability. [Solution] The on / off valve 100 includes a body portion 102 having a peripheral wall 121 surrounding a lumen with a circular cross-section, a cock 101 inserted into the lumen of the body portion 102 and having a stopper body 111 and a lever 115 extending radially outward from the stopper body 111, which is rotatable between a first rotation position in which the inlet 123 and outlet 124 are connected by a connecting passage 113 and a second rotation position in which the space between the inlet 123 and outlet 124 is closed, and an inlet pipe extending proximal to the inlet in communication with the inlet, and an outlet pipe extending distal to the outlet in communication with the outlet. The angle between the lever 115 and the outlet pipe 106 is smaller than that in the first rotation position and less than 90° in the second rotation position.

Description

Technical Field

[0001] The present disclosure relates to an on-off valve.

Background Art

[0002] For patients with urinary disorders such as cystitis or prostatic hypertrophy, or patients who are unable to go to the toilet on their own, a urinary catheter may be used. Since the urinary tract does not have an immune system like blood vessels, the invasion of microorganisms is a serious problem. Therefore, it is preferable to make the path including the urinary catheter a closed system as much as possible. For this reason, a urine collection bag having an openable and closable urine discharge port is used to temporarily store the urine drained by the urinary catheter. The urine accumulated in the urine collection bag is discarded by opening the urine discharge port. The urine discharge port is generally opened and closed by a clamp that crushes a tube or a simple on-off valve (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The minimum requirement for a urination port opening and closing mechanism is that it can be opened and closed. However, although urine collection bags are disposable, they are typically used for several days to several weeks, meaning the urination port is opened and closed multiple times (frequently). Therefore, the opening and closing mechanism of the urination port requires reliable closure to prevent leakage. In addition, since the urine stored in the container may crystallize, its viscosity may increase, or blood mixed in the urine may coagulate, it is also necessary to ensure a certain flow rate. Furthermore, since the patient may have to operate it themselves, it is necessary that it be easy and error-free to operate, and that it can be operated with one hand. However, conventional opening and closing mechanisms cannot adequately meet these requirements.

[0005] Furthermore, these problems can occur not only in the opening and closing mechanism of the urination port, but also in various other opening and closing mechanisms.

[0006] The objective of this disclosure is to solve at least one of the problems of conventional opening and closing mechanisms and to realize an opening and closing valve with improved operability. [Means for solving the problem]

[0007] A first aspect of the on-off valve of the present disclosure comprises a circumferential wall surrounding a lumen with a circular cross-section, a body having an inlet and an outlet formed at opposite circumferential positions of the circumferential wall and communicating with the lumen, an inlet pipe extending proximal to the inlet and communicating with the inlet, an outlet pipe extending distal to the outlet and communicating with the outlet, and a cock having a plug body and a lever extending radially outward from the plug body, which is inserted into the lumen of the body and rotatable between a first rotation position in which the inlet and outlet are connected by a connecting passage and a second rotation position in which the space between the inlet and outlet is closed, wherein the angle between the lever and the outlet pipe is smaller than that of the first rotation position and less than 90° at the second rotation position.

[0008] In the first embodiment of the on-off valve, the angle between the lever and the outflow tube is smaller than that in the first rotation position where the valve is open, and less than 90°, when the valve is in the second rotation position where the valve is closed. When opening the on-off valve from the urine collection bag to dispose of urine, there is a risk that urine may flow out forcefully from the outlet. In the first embodiment, when disposing of urine from the urine collection bag, the lever is pulled up and moved away from the outflow tube, making it less likely for urine to get on the operating finger. Also, bending the finger is more intuitive than extending it, and when pulling up, the range of motion of the finger can be secured before the operation compared to pushing it in. Therefore, the operation of bending the finger to pull up the lever, which is in a position close to the outflow tube, and moving it away from the outflow tube can be easily done with one hand, and is highly operable.

[0009] In the case of a urine bag, the outlet is directed downwards, so the lever normally points downwards (towards the bottom of the urine collection bag, i.e., towards the opening of the outflow tube) when closed. For this reason, it is unlikely that the lever will be unintentionally opened, and in any situation in which the on-off valve of this disclosure is used, such as when operating the lever to dispose of urine or when urine is stored in the urine collection bag, it is possible to avoid the situation in which the lever unexpectedly opens from the closed position and urine leaks out. Furthermore, the on-off valve of this embodiment is useful not only for urine collection bags but also for various flow paths.

[0010] In the first embodiment of the on / off valve, the angle between the lever and the outlet pipe at the second rotation position can be 10° or more. This configuration creates a gap between the lever and the outlet pipe, making it easier to grip the lever when pulling it to the first rotation position, thus improving operability. Preferably, the angle between the lever and the outlet pipe at the second rotation position is 40° or less. This configuration makes it less likely for the lever to move unintentionally.

[0011] In a first embodiment of the on-off valve, the difference between the angle between the lever and the outlet pipe at the first rotational position and the angle between the lever and the outlet pipe at the second rotational position can be less than 90°. This configuration reduces the angle at which the lever is moved when opening or closing the valve, thereby improving operability.

[0012] A second embodiment of the on / off valve comprises a circumferential wall surrounding a lumen with a circular cross-section, a body having an inlet and an outlet formed at opposite circumferential positions of the circumferential wall and communicating with the lumen, an inlet pipe extending proximal to the inlet and communicating with the outlet, an outlet pipe extending distal to the outlet and communicating with the outlet, a cock having a plug body inserted into the lumen of the body and rotatable between a first rotation position in which the inlet and outlet are connected by a connecting passage and a second rotation position in which the space between the inlet and outlet is closed, and a click sensation generating part having a first click sensation generating projection provided on the body and a second click sensation generating projection provided on the cock, wherein a click sensation is generated when the plug body reaches the second rotation position, as the second click sensation generating projection overcomes the first click sensation generating projection.

[0013] In the second embodiment of the on / off valve, a click sensation is generated when the stopper body reaches the second rotational position, allowing for easy confirmation that the valve is closed without relying on visual cues, thus reducing errors such as using the valve while it is not fully closed. This is particularly useful when operating in dark conditions.

[0014] In a second embodiment of the on / off valve, the cock has a lever extending radially outward from the plug body, the lever has opposing surfaces that rotate relative to and are spaced apart from the outer surface of the circumferential wall of the body, a first click-feeling projection is formed on the outer surface of the circumferential wall, and a second click-feeling projection is formed on the opposing surface. With this configuration, a click sensation can be easily generated.

[0015] A third embodiment of the on-off valve comprises a circumferential wall surrounding a lumen with a circular cross-section, a body having an inlet and an outlet formed at opposite circumferential positions of the circumferential wall and communicating with the lumen, an inlet pipe extending proximal to the inlet and communicating with the inlet, an outlet pipe extending distal to the outlet and communicating with the outlet, and a cock having a stopper body inserted into the lumen of the body and rotatable between a first rotation position in which the inlet and outlet are connected by a connecting passage and a second rotation position in which the space between the inlet and outlet is closed, wherein the angle difference between the first rotation position and the second rotation position is less than 90°.

[0016] In a third embodiment of the on-off valve, the difference in angle between the first rotational position and the second rotational position is less than 90°. Therefore, the angle by which the plug body is moved during opening and closing is reduced, improving operability.

[0017] In a third embodiment of the on-off valve, the ratio of the inner diameter of the connecting passage to the outer diameter of the plug body can be 0.52 or less. This configuration allows the angle at which the plug body moves during on-off can be less than 90° while ensuring sufficient flow rate. Furthermore, it is preferable that the ratio of the inner diameter of the connecting passage to the outer diameter of the plug body be 0.36 or more. This configuration avoids increasing the size of the valve. [Effects of the Invention]

[0018] The on-off valve of this disclosure makes it possible to realize an on-off valve with improved operability. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view showing the open state of an on / off valve according to one embodiment. [Figure 2] This is a perspective view showing the closed state of an on / off valve according to one embodiment. [Figure 3] This is a cross-sectional view showing the open state of an on / off valve according to one embodiment. [Figure 4] This is a cross-sectional view showing the state immediately before the click sensation generating mechanism of an on / off valve according to one embodiment is activated. [Figure 5] This is a cross-sectional view showing the closed state of an on / off valve according to one embodiment. [Figure 6] It is a side view showing a cock of an on-off valve according to an embodiment.

Mode for Carrying Out the Invention

[0020] As shown in FIGS. 1 to 6, an on-off valve according to an embodiment includes a body portion 102 having a lumen with a circular cross-section surrounded by a peripheral wall 121, and a cock 101 having a plug 111 and a lever 115 inserted into the lumen of the body portion 102.

[0021] An inlet 123 and an outlet 124 communicating with the lumen are formed in the peripheral wall 121 of the body portion 102. The inlet 123 and the outlet 124 are located on opposite sides in the circumferential direction. An inflow pipe 105 extends proximally from the position of the inlet 123 of the peripheral wall 121, and an outflow pipe 106 extends distally from the position of the outlet 124. In the present embodiment, the side where liquid flows through the on-off valve 100, such as a urine collection bag, is defined as the proximal side, and the opposite side is defined as the distal side.

[0022] The plug 111 of the cock 101 has a substantially cylindrical shape and is slidably and rotatably inserted into the lumen with a circular cross-section of the body portion 102. A connection flow path 113 penetrating in the radial direction is formed in the plug 111. By setting the plug 111 to the first rotational position, the axis connecting the inlet 123 and the outlet 124 coincides with the axis of the connection flow path 113, and the inlet 123 and the outlet 124 are connected by the connection flow path 113 to be in an open state. By setting the plug 111 to a second rotational position shifted from the first rotational position, the axis connecting the inlet 123 and the outlet 124 and the axis of the connection flow path 113 are in a shifted position, and the space between the inlet 123 and the outlet 124 is closed to be in a closed state. The second rotational position is a position set in advance from the positions where there is no overlapping portion between the inlet 123 or the outlet 124 and the end opening of the connection flow path 113, and is not limited to a position where the axis connecting the inlet 123 and the outlet 124 and the axis of the connection flow path 113 are shifted by 90°.

[0023] The lever 115 is integrated with the plug 111 and extends radially outward relative to the plug 111. In this embodiment, the lever 115 is plate-shaped. In the following description, the direction coinciding with the axial direction of the plug 111 is defined as the width direction of the lever 115, the direction coinciding with the radial direction of the plug 111 is defined as the length direction of the lever 115, and the direction coinciding with the circumferential direction of the plug 111 is defined as the thickness direction of the lever 115. The base end of the lever 115 in the longitudinal direction is not entirely fixed to the outer circumferential surface of the plug 111, but only one end in the width direction is fixed to a rim 116 provided on one end of the plug 111 in the axial direction. Since the rim 116 has an outer diameter larger than the inner diameter of the lumen of the body 102, a gap is created between the base end of the lever 115 in the longitudinal direction and the outer circumferential surface of the plug 111. When the plug 111 is inserted into the lumen of the body 102, the peripheral wall 121 of the body 102 is positioned between the outer surface of the plug 111 and the base end of the lever 115 in the longitudinal direction. The lever 115 and the plug 111 can be molded as a single unit, but they can also be molded separately and then assembled together.

[0024] In this embodiment, the lever 115 and the plug 111 are positioned such that the angle θ2 between the lever 115 and the outlet pipe 106 in the second rotation position (closed) is smaller than the angle θ1 between the lever 115 and the outlet pipe 106 in the first rotation position (open), and that θ2 is less than 90°. The angle between the lever 115 and the outlet pipe 106 is the angle between the line connecting the longitudinal end of the lever 115 and the center of the plug 111 and the axis of the outlet pipe 106.

[0025] In this embodiment, the lever 115 is positioned close to the tip of the outlet pipe 106 when closed, and away from the tip of the outlet pipe 106 when open. When the outlet pipe is open, liquid may be forcefully discharged from the tip of the outlet pipe 106, but since the finger operating the lever 115 is positioned away from the tip of the outlet pipe, it is less likely that the discharged liquid will come into contact with the finger. In addition, since the outlet pipe will not open unless the lever 115 is intentionally pulled up, it is less likely that it will open unintentionally.

[0026] In this embodiment, since θ1 is close to 90°, the lever 115 is in an upright position relative to the outlet pipe 106 when in the open position. Therefore, closing the lever is easy because it is done by pushing the lever 115 from front to back, and the error of forgetting to return it to the closed position after discharging the liquid is reduced.

[0027] Having a certain distance between the lever 115 and the outlet pipe 106 at the second rotation position makes it easier to grip the lever 115 with a finger, thus facilitating the operation of moving it to the first rotation position. For this reason, the angle θ2 between the lever 115 and the outlet pipe 106 at the second rotation position is preferably 10° or more, and more preferably 20° or more. Furthermore, from the viewpoint of making unintended movement of the lever 115 less likely, it is preferable to set the angle θ2 between the lever 115 and the outlet pipe 106 to 40° or less.

[0028] If the only requirement is to enable opening and closing, a configuration can be adopted in which the valve body 111 rotates freely beyond the first and second rotation positions. However, from the viewpoint of making the opening and closing operation easy and reliable, it is preferable to have a configuration in which the valve body 111 does not rotate beyond the first and second rotation positions. In this embodiment, a rotation restricting mechanism is provided that limits the rotation of the valve body 111 to between the first and second rotation positions. By providing a rotation restricting mechanism, the operator does not need to check how far the lever 115 must be rotated to achieve the closed or open state, thus providing the operator with a sense of security and preventing unnecessary operations.

[0029] In this embodiment, the rotation restricting mechanism is formed by a body-side projection provided on the body 102 and a cock-side projection provided on the cock 101. In this embodiment, rotation restriction on the proximal side is achieved by a proximal-side restricting projection 131, which is the body-side projection, and a lever-side restricting projection 134, which is the cock-side projection. When the stopper body 111 of the cock 101 is in the first rotation position, the lever-side restricting projection 134 and the proximal-side restricting projection 131 provided on the lever 115 come into contact. The protrusion heights of the lever-side restricting projection 134 and the proximal-side restricting projection 131 are adjusted so that they do not easily overtake each other, thus restricting rotation beyond the first rotation position. Rotation restriction on the distal side is provided by the lever 115 and the outlet pipe 106. At the second rotation position, the edge surface of the lever 115 comes into contact with the outlet pipe 106, thereby restricting rotation beyond the second rotation position.

[0030] In this embodiment, the proximal regulating projection 131 is provided on the outer surface of the peripheral wall 121 of the body portion 102. The proximal regulating projection 131 is provided near the inlet 123, and the lever-side regulating projection 134 is provided on the base end surface 136 located at the base end in the longitudinal direction of the lever 115. When the cock 101 is rotated, the base end surface 136 rotates relative to the peripheral wall 121 while maintaining a state facing the surface of the peripheral wall 121. Therefore, when the lever 115 is pressed proximal to set the plug body 111 to the first rotation position, the lever-side regulating projection 134 comes into contact with the proximal regulating projection 131, restricting further rotation. When the lever 115 is pressed distal to set the plug body 111 to the second rotation position, as shown in Figure 5, the edge surface of the lever 115 comes into contact with the outlet pipe 106, restricting further rotation. Furthermore, on the distal side, the regulating projection on the lever 115 can be configured to contact a regulating projection on the body 102 side to restrict rotation. Alternatively, the rotation regulating mechanism on the proximal side can be configured such that the lever 115 contacts the inlet pipe 105 to restrict rotation.

[0031] The on-off valve of this embodiment includes a rotation restricting mechanism that restricts the rotation of the plug body 111 between a first rotation position and a second rotation position, as well as a click sensation generating mechanism that provides the operator with a click sensation when the plug body 111 reaches the second rotation position.

[0032] The click sensation generating mechanism is formed by a first click sensation generating protrusion 132 provided on the body portion 102 and a second click sensation generating protrusion 135 provided on the cock 101 side. In this embodiment, the second click sensation generating protrusion is provided distal to the lever-side regulating protrusion 134 on the base end surface 136 of the lever 115. The second click sensation generating protrusion 135 can easily overcome the first click sensation generating protrusion 132, generating a click sensation when it does so. Since the second click sensation generating protrusion 135 is configured to overcome the first click sensation generating protrusion 132 in both directions, it can also be moved from the second rotation position to the first rotation position.

[0033] By generating a click sensation just before the stopper 111 reaches the second rotation position, the operator can sense that the stopper 111 has reached the second rotation position and is in the closed state, thus reducing the likelihood of operator errors such as stopping the operation of the lever 115 at an intermediate position. Furthermore, since operating resistance can be generated when moving to the first rotation position, it is difficult to unintentionally move the lever 115 towards the first rotation position.

[0034] The positions for providing the first click-feeling projection and the second click-feeling projection are not limited to the outer surface of the peripheral wall 121 and the base end surface 136 of the lever 115. For example, the first click-feeling projection and the second click-feeling projection can be provided on the axial end surfaces of the peripheral walls 121 and the inner surface of the rim 116 that are opposite each other. The lever-side regulating projection 134 can also be configured to contact the first click-feeling projection 132 to restrict further rotation distally. In this case, the lever-side regulating projection 134 can be made higher than the second click-feeling projection 135 so that the second click-feeling projection 135 goes over the first click-feeling projection 132, but the lever-side regulating projection 134 does not go over the first click-feeling projection 132. Alternatively, the mechanism can be designed so that the lever-side regulating protrusion 134 overcomes the first click-generating protrusion 132 to generate a click sensation, without providing the second click-generating protrusion 135. In this case, the height of each protrusion can be adjusted so that the lever-side regulating protrusion 134 does not overcome the proximal regulating protrusion 131, but overcomes the first click-generating protrusion 132.

[0035] The rotation restriction mechanism and the click sensation generation mechanism can be configured as independent and separate components. Furthermore, the rotation restriction mechanism can be provided separately for the first rotation position and the second rotation position, or for only one of them. A click sensation generation mechanism can also be provided on the first rotation position side. The rotation restriction mechanism and the click sensation generation mechanism can be provided as needed, or omitted. Additionally, only one of the rotation restriction mechanism or the click sensation generation mechanism can be provided.

[0036] In this embodiment, the first rotation position is the position where the axis connecting the inlet 123 and the outlet 124 coincides with the axis of the connecting channel 113, and the inlet 123 and the outlet 124 are connected by the connecting channel 113. The second rotation position is the position where the space between the inlet 123 and the outlet 124 is blocked, and can be selected and set from a range of positions where there is no overlap between the inlet 123 or the outlet 124 and the end opening of the connecting channel 113. For example, the second rotation position can be set to a position where the angle difference between it and the first rotation position is 90°, so that the axis of the connecting channel 113 and the axis connecting the inlet 123 and the outlet 124 are perpendicular. On the other hand, from the viewpoint of operability, it is preferable that opening and closing be performed with the minimum necessary rotational operation. Therefore, it is preferable that the second rotation position be a position where the angle difference between it and the first rotation position is less than 90°, and where there is no overlap between the inlet 123 or outlet 124 and the end opening of the connecting flow path 113. By reducing the angle difference between the second rotation position and the first rotation position, the operating range of the lever 115 is narrowed, thereby improving operability.

[0037] From the viewpoint of operability, the angle difference between the second rotation position and the first rotation position is preferably 70° or less, and more preferably 60° or less. Furthermore, from the viewpoint of ensuring reliable closing, it is preferably 40° or more, and more preferably 50° or more. Note that the angle difference between the second rotation position and the first rotation position is equal to the acute angle formed by the axis of the connecting flow path 113 and the axis connecting the inlet 123 and the outlet 124 at the second rotation position.

[0038] From the viewpoint of ensuring reliable closure, it is preferable to set the second rotation position to a rotation position greater than the rotation position at which there is no overlap between the inlet 123 or outlet 124 and the end opening of the connecting channel 113. This configuration provides a margin for rotation positions at which the closure can be achieved, thus reducing the likelihood of operational errors. Specifically, the angle difference θ3 between the rotation position at which there is no overlap between the inlet 123 or outlet 124 and the end opening of the connecting channel 113 can be preferably increased by 5° or more, more preferably by 15° or more, and even more preferably by 25° or more. The angle difference θ3 is equal to the angle between the line connecting the center of the lumen of the body 102 and the lower end of the outlet 124, and the line connecting the center of the plug 111 inserted into the lumen of the body 102 and the upper end of the connecting channel 113 on the outlet 124 side. Depending on the rotational position of the plug, the angle is formed by the line connecting the center of the lumen of the body 102 and the upper end of the outlet 124, and the line connecting the center of the plug 111 inserted into the lumen of the body 102 and the lower end of the connecting channel 113 on the outlet 124 side.

[0039] If a click-feed mechanism is present, it is preferable that the liquid flow is reliably closed at a position before the rotation position in which the click-feed mechanism operates. With this configuration, even if the operation is stopped due to mistaking the contact between the click-feeding protrusions for rotation restriction, liquid leakage can be prevented. Note that if θ3 is made too large, the connecting flow path 113 and the inlet 123 or outlet 124 will become perpendicular, so θ3 is preferably 35° or less. Furthermore, from the viewpoint of providing a margin in the rotation position and improving operability by reducing the angle difference between the second rotation position and the first rotation position, it is preferable to set θ3 in the range of about 15° to 20°.

[0040] The rotation angle at which there is no overlap between the inlet 123 or outlet 124 and the end opening of the connecting passage 113 varies depending on the inner diameters of the inlet 123 and outlet 124, the inner diameter of the connecting passage 113, and the outer diameter of the stopper 111. The smaller the inner diameters of the inlet 123 and outlet 124 and the inner diameter of the connecting passage 113, and the larger the outer diameter of the stopper 111, the smaller the rotation angle required to eliminate the overlap between the end opening of the connecting passage 113 and the inlet 123. On the other hand, in order to ensure the flow rate of liquid passing through the on-off valve 100, it is preferable to make the inner diameters of the inlet 123 and outlet 124 and the inner diameter of the connecting passage 113 somewhat large. Furthermore, there is an upper limit to the outer diameter of the stopper 111 from the standpoint of operability and size. Therefore, the inner diameters of the inlet 123 and outlet 124 and the inner diameter of the connecting channel 113 are preferably 6.0 mm or more, more preferably 7.0 mm or more, preferably 9.0 mm or less, and more preferably 8.0 mm or less. The outer diameter of the plug body 111 is preferably 14 mm or more, more preferably 16 mm or more, preferably 20 mm or less, and more preferably 18 mm or less.

[0041] The ratio of the outer diameter of the plug body 111 to the inner diameters of the inlet 123 and outlet 124 and the inner diameter of the connecting channel 113 is preferably 0.36 or higher, more preferably 0.38 or higher, preferably 0.52 or lower, and most preferably 0.50 or lower. If the inner diameters of the inlet 123, outlet 124, and connecting channel 113 are different, the ratio can be set to the largest inner diameter. However, it is preferable that the inner diameters of the inlet 123 and outlet 124 and the inner diameter of the connecting channel 113 be the same diameter to avoid any steps. Furthermore, it is preferable that the inner diameters of the inlet pipe 105 and outlet pipe 106 and the inner diameters of the inlet 123 and outlet 124 be the same diameter to avoid any steps.

[0042] In this embodiment, with the stopper 111 inserted into the lumen of the body 102, the widthwise center of the lever 115 is located near the axial center of the body 102. Therefore, compared to the case where the lever 115 protrudes axially outward from the body 102, it is easier to grasp and operate with one hand. For example, by grasping the inlet pipe 105, body 102, and outlet pipe 106 with the four fingers excluding the thumb and placing the thumb on the lever 115, it is easy to operate with one hand. Furthermore, it can be operated in the same way whether grasped with the right hand or the left hand. In this embodiment, the proximal surface of the lever 115 is a curved surface that is recessed toward the distal side so that the lever 115 can be easily pushed distally. In addition, the surface is provided with anti-slip irregularities. However, the lever 115 can also be configured to protrude axially outward from the stopper 111.

[0043] The lever 115 has a roughly triangular cross-section, with a greater circumferential thickness at the base end in the longitudinal direction than at the tip end. This shape ensures both operability and strength of the lever 115. Furthermore, a cavity is provided in the center of the lever 115. This cavity prevents the formation of excessively thick sections, improving moldability. However, various shapes can be adopted for the lever 115.

[0044] The plug 111 can be designed to receive a compressive force when inserted into the lumen of the body 102 in order to improve sealing performance. A lubricant or the like can also be applied to its surface to allow for smooth sliding and rotation. In this embodiment, one axial end face of the plug 111 is recessed, allowing the shape of the connecting channel 113 to be visually confirmed from the outside. This makes it even easier to confirm whether the plug 111 is in a closed or open position. Furthermore, moldability can be improved by preventing the formation of extremely thick sections. However, such recesses can be omitted. Recesses can also be provided on both sides.

[0045] The proximal end of the inlet pipe 105 is provided with a retaining step. This makes it easy to fit and secure a tube to the inlet pipe 105. The inlet pipe 105 is not limited to this configuration, and various configurations can be adopted to connect an inlet channel such as a tube. For example, it can be configured to allow the tube to be fitted inside, or to connect the tube via a connector. The distal end of the outlet pipe 106 is a diagonally cut nozzle, which allows the liquid to be discharged smoothly. The outlet pipe 106 is longer than the inlet pipe 105, making it less likely for urine to get on your hands when disposing of the liquid. In this embodiment, the length of the outlet pipe 106 is approximately twice the length of the inlet pipe 105. However, the shape and length of the outlet pipe 106 and the inlet pipe 105 can be arbitrarily set as needed.

[0046] A mechanism to prevent the plug 111 from falling out of the lumen of the body 102 can be provided. Providing a mechanism to prevent detachment can further improve operability. The mechanism to prevent detachment can be realized, for example, by providing interlocking grooves on the plug 111 and the body to prevent detachment, or by attaching a retainer to the end of the plug 111 opposite the rim 116.

[0047] The on-off valve of this embodiment can be used as an on-off valve for the urination port of a urine collection bag. Furthermore, it can be used as an on-off valve in various other flow paths. [Industrial applicability]

[0048] The on-off valve of this disclosure is highly operable and is particularly useful as an on-off valve for the urination port of a urination bag, etc. [Explanation of Symbols]

[0049] 100 Shut-off valves 101 Cook 102 Torso 105 Inflow pipe 106 Outflow pipe 111 Plug body 113 Connection channel 115 Lever 116 rim 121 Peripheral wall 123 Inlet 124 Outlet 131 Proximal regulatory protrusion 132 First click-feel generating protrusion 134 Lever-side restricting protrusion 135 Second click-generating protrusion 136 Proximal surface

Claims

1. A body having a circumferential wall surrounding a lumen with a circular cross-section, and an inlet and an outlet formed at opposite positions in the circumferential direction of the circumferential wall, respectively, and communicating with the lumen, An inlet pipe that communicates with the aforementioned inlet and extends proximal to it, An outflow pipe that communicates with the aforementioned outlet and extends distally, The device comprises a stopper body inserted into the cavity of the body, which is rotatable between a first rotational position in which the inlet and outlet are connected by a connecting channel and a second rotational position in which the space between the inlet and outlet is closed, and a cock having a lever extending radially outward from the stopper body, An on / off valve in which the angle between the lever and the outlet pipe is smaller than the angle at the first rotation position and less than 90° at the second rotation position.

2. The on / off valve according to claim 1, wherein at the second rotation position, the angle between the lever and the outlet pipe is 10° or more.

3. The on / off valve according to claim 1, wherein the angle between the direction in which the lever extends at the first rotation position and the direction in which the lever extends at the second rotation position is less than 90°.

4. A body having a circumferential wall surrounding a lumen with a circular cross-section, and an inlet and an outlet formed at opposite positions in the circumferential direction of the circumferential wall, respectively, and communicating with the lumen, An inlet pipe that communicates with the aforementioned inlet and extends proximal to it, An outflow pipe that communicates with the aforementioned outlet and extends distally, A cock having a stopper body that is inserted into the cavity of the body and is rotatable between a first rotation position in which the inlet and outlet are connected by a connecting channel and a second rotation position in which the space between the inlet and outlet is closed, An on / off valve comprising a click sensation generating section having a first click sensation generating projection provided on the body and a second click sensation generating projection provided on the cock, wherein when the stopper body reaches the second rotation position, the second click sensation generating projection overcomes the first click sensation generating projection to generate a click sensation.

5. The cock has a lever that extends radially outward from the stopper body, The lever has opposing surfaces that rotate relative to each other at a distance from the outer surface of the peripheral wall of the body, The first click-generating protrusion is formed on the outer surface of the peripheral wall, The on / off valve according to claim 4, wherein the second click-generating protrusion is formed on the opposing surface.

6. A body having a circumferential wall surrounding a lumen with a circular cross-section, and an inlet and an outlet formed at opposite positions in the circumferential direction of the circumferential wall, respectively, and communicating with the lumen, An inlet pipe that communicates with the aforementioned inlet and extends proximal to it, An outflow pipe that communicates with the aforementioned outlet and extends distally, The cock is inserted into the cavity of the body and has a stopper that can rotate between a first rotation position in which the inlet and outlet are connected by a connecting channel and a second rotation position in which the space between the inlet and outlet is closed. An on / off valve in which the difference in angle between the first rotation position and the second rotation position is less than 90°.

7. The on / off valve according to claim 6, wherein the ratio of the inner diameter of the connecting channel to the outer diameter of the plug body is 0.52 or less.

Images