Hemostasis valve opening and closing mechanism

Abstract

The present invention improves operating characteristics of an opening / closing mechanism. A penetrating member can be positioned at a first position where a hemostasis valve is closed and a second position where the hemostasis valve is pressed and opened, along a first direction in which a lumen of a housing extends. An operation member slides along a second direction that is non-parallel to the first direction, thereby pressing the penetrating member to displace the penetrating member to a distal end side. A biasing member biases the penetrating member to a proximal end side. A motion restricting groove formed on the surface of the penetrating member has formed therein: a closed position portion into which a pin is fitted when the penetrating member is at the first position; a first top portion into which the pin is fitted when the penetrating member arrives at a position more on the distal end side than the second position from the aforementioned state; an open holding portion into which the pin is fitted so as to restrict the movement of the penetrating member toward the proximal end side when the penetrating member is displaced to the second position from the aforementioned state; and a second top portion into which the pin is fitted when the penetrating member reaches a position more on the distal end side than the second position from the aforementioned state.

Description

[Technical field]

[0001] The technology disclosed in this specification relates to an opening and closing mechanism for a hemostasis valve, a fixing mechanism for an elongated medical device, and a medical connector. [Background technology]

[0002] A Y connector is a medical connector that is connected to a guiding catheter. The Y connector has a main tube and a branch tube branched from the main tube, and a long medical device such as a guidewire or catheter is introduced into the guiding catheter through the main tube, and a liquid such as a contrast medium or saline is supplied through the branch tube. The Y connector is provided with an opening / closing mechanism for opening and closing a hemostatic valve that suppresses the outflow of blood through the lumen of the main tube, and a fixing mechanism for fixing the long medical device.

[0003] The opening and closing mechanism of the hemostatic valve in a conventional Y connector is provided with a penetrating member (opener) with a through hole coaxial with the lumen of the main tube, and by pressing the penetrating member in a direction parallel to the axial direction of the lumen of the main tube, it is possible to switch between an open state in which the penetrating member presses against the hemostatic valve and opens the hemostatic valve, and a closed state in which the penetrating member moves away from the hemostatic valve and closes the hemostatic valve (see Patent Document 1). In addition, the fixing mechanism for long medical instruments in the Y connector disclosed in Patent Document 1 is provided with an elastic fixed valve with a through hole through which the long medical instrument is inserted, and by rotating the screw to move it in the axial direction and thereby moving the pusher in the axial direction, the fixed valve is pressed by the pusher and elastically deformed, reducing the inner diameter of the through hole of the fixed valve to fix the long medical instrument, and switching between a fixed state and an released state in which the fixed valve is not pressed by the pusher, the inner diameter of the through hole of the fixed valve expands, and the fixation of the long medical instrument is released. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5249049 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned Y-connector configuration, the operation of opening and closing the hemostatic valve requires pressing the penetrating member in the axial direction of the lumen of the main tube, which can be difficult to perform. In addition, the operation of fixing / unfixing the long medical device requires rotating a screw, which is cumbersome and makes it impossible to sense or see how well the long medical device is fixed.

[0006] This specification discloses a technique that can solve the above-mentioned problems. [Means for solving the problem]

[0007] The technology disclosed in this specification can be realized, for example, in the following forms.

[0008] (1) The opening / closing mechanism of the hemostatic valve disclosed in the present specification includes a housing, a hemostatic valve, a penetrating member, an operating member, and a biasing member. The housing is a tubular member having a lumen formed therein that communicates with a distal opening and a proximal opening. The hemostatic valve is attached within the housing and is normally in a closed state. When pressed from the proximal side, the hemostatic valve is in an open state in which a through hole communicating with the distal opening of the housing is formed. The penetrating member is accommodated within the housing on the proximal side of the hemostatic valve so as to be slidable along a first direction that is an extension direction of the lumen. The penetrating member has a through hole formed therein that communicates with the proximal opening of the housing. The penetrating member can be positioned at a first position that brings the hemostatic valve into the closed state, and at a second position that is a position that is distal from the first position along the first direction and that brings the hemostatic valve into the open state by pressing the hemostatic valve, thereby communicating the through hole of the hemostatic valve with the through hole of the penetrating member. A movement restricting groove that is connected around the entire circumference is formed on the surface of the penetrating member. The operating member is accommodated in the housing so as to be slidable along a second direction that is non-parallel to the first direction, with a portion of the operating member exposed from the housing. The operating member is configured to be able to press the penetrating member and displace it toward the tip end by sliding toward the inside of the housing along the second direction. A biasing member biases the penetrating member toward the base end. The opening and closing mechanism of the hemostatic valve further includes a pin attached to the housing such that an end of the pin fits loosely into the movement restricting groove. The movement restricting groove is formed with a closed position portion, a first apex, an open holding portion, and a second apex. The closed position portion is a portion into which the end of the pin fits without restricting the movement of the penetrating member toward the tip end when the penetrating member is in a first state in the first position. The first apex portion is a portion into which the end of the pin fits without restricting movement of the penetrating member toward the base end side when the penetrating member is pressed by the operating member from the first state to a position further distal than the second position in a second state, and the open holding portion is a portion into which the end of the pin fits so as to restrict movement of the penetrating member toward the base end side when the penetrating member is displaced from the second state to the second position by the biasing force of the biasing member in a third state.The second apex is a portion into which the end of the pin fits without restricting movement of the penetrating member toward the base end when the penetrating member is pressed by the operating member from the third state to a fourth state which is a position further distal than the second position.

[0009] In this manner, in the opening and closing mechanism of the hemostatic valve, when the penetrating member is located at the first position and the hemostatic valve is in the closed state, when the operating member receives a pressing force and slides inwardly of the housing in the second direction, the penetrating member is pressed by the operating member and moves from the second position to a position toward the tip end, and as a result, the end of the pin reaches the first apex, which is a portion of the movement restricting groove that fits without restricting the movement of the penetrating member toward the base end. When the pressing force on the operating member is then released, the penetrating member moves toward the base end to the second position by the biasing force of the biasing member, and the hemostatic valve switches from the closed state to the open state. At this time, the end of the pin moves from the first apex of the movement restricting groove to the open holding portion, restricting the movement of the penetrating member toward the base end and maintaining the penetrating member in the second position, thereby maintaining the open state of the hemostatic valve. Furthermore, when the operating member receives the pressing force again and slides inwardly of the housing along the second direction, the penetrating member is pressed by the operating member and moves from the second position to a position toward the distal end, and as a result, the end of the pin reaches the second apex, which is a portion in the movement restricting groove that fits without restricting the movement of the penetrating member toward the proximal end. When the pressing force on the operating member is then released, the penetrating member moves toward the proximal end to the first position by the biasing force of the biasing member, and the hemostatic valve switches from the open state to the closed state. Here, in the opening / closing mechanism of this hemostatic valve, the operating member is slidable along a second direction that is non-parallel to the first direction that is the extension direction of the lumen of the housing, and therefore the opening / closing operation of the hemostatic valve is an operation of pressing the operating member in the second direction that is non-parallel to the extension direction of the lumen of the housing. Therefore, according to the opening / closing mechanism of this hemostatic valve, the operator can easily open and close the hemostatic valve with his thumb while holding a device including this opening / closing mechanism, and the operability of the opening / closing mechanism can be improved.

[0010] (2) In the above-mentioned hemostatic valve opening / closing mechanism, the biasing member may be cylindrical, and a convex portion to be inserted into the hollow portion of the biasing member may be formed on a surface of the penetrating member facing the biasing member. According to this hemostatic valve opening / closing mechanism, the positioning between the penetrating member and the biasing member can be easily and accurately performed, and the biasing force of the biasing member can be effectively transmitted to the penetrating member, thereby improving the accuracy of the operation of the opening / closing mechanism.

[0011] (3) In the above-mentioned opening / closing mechanism of the hemostatic valve, the angle between the first direction and the second direction may be configured to be equal to or greater than 35 degrees and equal to or less than 55 degrees. According to this opening / closing mechanism of the hemostatic valve, the operator can extremely easily open and close the hemostatic valve with his thumb while holding a device equipped with this opening / closing mechanism, thereby effectively improving the operability of the opening / closing mechanism.

[0012] (4) In the opening / closing mechanism of the hemostasis valve, the biasing member and the operating member may be configured to be arranged to face each other in the first direction. According to this opening / closing mechanism of the hemostasis valve, the pressing force applied to the operating member can be efficiently transmitted to the biasing member to deform the biasing member, thereby effectively improving the operability of the opening / closing mechanism.

[0013] (5) In the above-mentioned opening / closing mechanism of the hemostatic valve, the penetrating member may have a main body portion in which the through hole is formed and a flange portion protruding from the main body portion in a third direction perpendicular to the first direction, and the operating member may be configured to be slidable relative to the penetrating member along the third direction while abutting against a base-end surface of the flange portion. This opening / closing mechanism of the hemostatic valve can efficiently convert between the sliding of the operating member along a second direction non-parallel to the first direction, which is the extension direction of the lumen of the housing, and the sliding of the penetrating member in the extension direction, thereby effectively improving the operability of the opening / closing mechanism.

[0014] (6) In the above-mentioned opening / closing mechanism of the hemostasis valve, the angle between the first direction and the second direction may be configured to be approximately 90 degrees. According to this opening / closing mechanism of the hemostasis valve, the operator can extremely easily open and close the hemostasis valve with his thumb and / or index finger while holding a device equipped with this opening / closing mechanism, thereby effectively improving the operability of the opening / closing mechanism.

[0015] (7) In the above-mentioned opening / closing mechanism of the hemostatic valve, the operating member may be configured to be composed of a first piece and a second piece facing each other in the second direction, and the first piece and the second piece may slide toward each other along the second direction to press the penetrating member and displace it toward the tip side. According to this opening / closing mechanism of the hemostatic valve, the operator can extremely easily and stably open and close the hemostatic valve by pinching the first piece and the second piece with his thumb and index finger while holding a device equipped with this opening / closing mechanism, and the operability of the opening / closing mechanism can be effectively improved.

[0016] (8) In the above-mentioned opening / closing mechanism of the hemostatic valve, each of the first piece and the second piece may have an operating member-side abutment surface that is parallel to a fourth direction perpendicular to both the first direction and the second direction and is a surface non-parallel to both the first direction and the second direction, and the penetrating member may have a penetrating member-side first abutment surface that is parallel to the fourth direction and is a surface non-parallel to both the first direction and the second direction and abuts against the operating member-side abutment surface of the first piece, and a penetrating member-side second abutment surface that is parallel to the fourth direction and is a surface non-parallel to both the first direction and the second direction and abuts against the operating member-side abutment surface of the second piece. According to this opening / closing mechanism of the hemostatic valve, it is possible to efficiently convert between the sliding of the operating member along the second direction substantially perpendicular to the extension direction of the lumen of the housing and the sliding of the penetrating member in the extension direction, and it is possible to effectively improve the operability of the opening / closing mechanism.

[0017] (9) The fixing mechanism for the long medical instrument disclosed in the present specification includes a housing, a tubular body, a pressing member, an operating member, a force transmission member, and a holding mechanism. The housing is a tubular member having a lumen formed therein that communicates with a distal opening and a proximal opening. The tubular body is a flexible member that is attached to the housing and has a through hole formed therein through which the long medical instrument is inserted. The through hole of the tubular body communicates with the distal opening and the proximal opening of the housing. The pressing member is accommodated in the housing so as to be slidable along a sixth direction perpendicular to a fifth direction parallel to the axis of the tubular body. The pressing member can be positioned at a fifth position and a sixth position displaced from the fifth position along the sixth direction, where a portion of the tubular body excluding both ends is pressed from the outer periphery to deform the tubular body. The operating member is a member that is slidable along a seventh direction that is not parallel to the fifth direction. The force transmission member is disposed between the pressing member and the operating member so as to be slidable in the seventh direction, and transmits to the pressing member a force that moves the operating member toward the pressing member along the seventh direction. The force transmission member can be positioned at a seventh position where the pressing member is positioned at the fifth position, and at an eighth position where the pressing member is pressed to be positioned at the sixth position. The holding mechanism 260 switches between a state where the force transmission member is held at the seventh position and a state where the force transmission member is held at the eighth position, every time the operating member slides along the seventh direction. The fixing mechanism for the long medical device is configured such that, when the pressing member is positioned at the sixth position, the inner circumferential surface of the deformed circular tubular body is pressed against the long medical device, thereby fixing the long medical device to the circular tubular body.

[0018] In this manner, in the fixing mechanism for the long medical device, the holding mechanism switches between a state in which the force transmission member is held at the seventh position and a state in which the force transmission member is held at the eighth position, each time the operating member slides along the seventh direction. When the holding mechanism switches to a state in which the force transmission member is held at the eighth position in association with the sliding of the operating member, the pressing member moves from the fifth position to the sixth position, the tubular body elastically deforms, and the long medical device is fixed to the tubular body. At this time, the holding mechanism holds the force transmission member at the eighth position, thereby maintaining the fixed state of the long medical device. Furthermore, when the operating member slides again in association with the holding mechanism switching to a state in which the force transmission member is held at the seventh position, the pressing member moves from the sixth position to the fifth position, the shape of the tubular body is restored, and the fixation of the long medical device is released. At this time, the holding mechanism holds the force transmission member at the seventh position, thereby maintaining the release of the fixation of the long medical device. Furthermore, in the fixing mechanism for the long medical device, the operating member is slidable along a seventh direction that is non-parallel to the direction parallel to the axis of the tubular body, so that the fixing and unlocking operations for the long medical device are performed by pressing the operating member in the seventh direction that is non-parallel to the direction parallel to the axis of the tubular body. Therefore, according to the fixing mechanism for the long medical device, the operator can fix and unlock the long medical device by an easy operation of pressing the operating member with his / her thumb while holding a device equipped with the fixing mechanism, and the operator can grasp the degree of fixation of the long medical device by touch and vision, improving the operability of the fixing mechanism.

[0019] (10) In the fixing mechanism for the long medical instrument, the holding mechanism may have a cylindrical biasing member that biases the force transmission member in a direction approaching the pressing member, and a convex portion that is inserted into the hollow portion of the biasing member is formed on a surface of the force transmission member that faces the biasing member. This fixing mechanism for the long medical instrument makes it possible to easily and accurately position the force transmission member and the biasing member, and to effectively transmit the biasing force of the biasing member to the force transmission member, thereby improving the accuracy of the operation of the fixing mechanism.

[0020] (11) In the fixing mechanism for the long medical instrument, the angle between the fifth direction and the seventh direction may be 35 degrees or more and 55 degrees or less. According to this fixing mechanism for the long medical instrument, while holding a device having this fixing mechanism, the operation member can be operated extremely easily with the thumb, and the operability of the fixing mechanism can be effectively improved.

[0021] (12) In the fixing mechanism for the long medical instrument, the force transmission member may be configured to be slidable relative to the pressing member along the fifth direction while abutting against a surface of the pressing member. This fixing mechanism for the long medical instrument can efficiently convert between the sliding of the force transmission member along the seventh direction and the sliding of the pressing member along the seventh direction, thereby effectively improving the operability of the fixing mechanism.

[0022] (13) Another fixing mechanism for a long medical instrument disclosed in this specification includes a housing, a tubular body, a tip-side connecting part, a base-side connecting part, and a pressing member. The housing is a tubular member having a lumen formed therein that communicates with a tip-side opening and a base-side opening, and capable of accommodating the long medical instrument in the lumen. The tubular body is a flexible tubular body attached to the housing and having a first through hole formed therein through which the long medical instrument is inserted, the first through hole communicating with the tip-side opening and the base-side opening of the housing. The tip-side connecting part connects a tip end of the tubular body to the housing, and has a second through hole formed therein that communicates with the first through hole of the tubular body. The base-side connecting part connects a base end of the tubular body to the housing, and has a third through hole formed therein that communicates with the first through hole of the tubular body. The pressing member is configured to press a pressing portion of the cylindrical body excluding both ends from a direction non-parallel to the axis of the cylindrical body, and is accommodated in the housing. An area of ​​the second through hole in a cross section of the fixing mechanism of the tip-side connecting portion and an area of ​​the third through hole in the cross section of the base-side connecting portion are larger than an area of ​​the first through hole in the cross section of the pressing portion.

[0023] In this manner, in the fixing mechanism for the long medical device, when the pressing member presses the pressing portion of the tubular body excluding both ends, the tubular body is elastically deformed to fix the long medical device to the tubular body. At this time, since the area of ​​the second through hole of the distal connection portion and the area of ​​the third through hole of the proximal connection portion are larger than the area of ​​the first through hole at the pressing portion of the tubular body, even in a state in which the pressing member presses the pressing portion of the tubular body to fix the long medical device, the long medical device is prevented from being pressed against the inner circumferential surfaces of the distal connection portion and the proximal connection portion, and damage to the long medical device can be more effectively prevented.

[0024] The technology disclosed in this specification can be realized in various forms, such as a hemostatic valve opening and closing mechanism, a fixing mechanism for a long medical device, a medical connector equipped with a hemostatic valve opening and closing mechanism and / or a fixing mechanism for a long medical device, a medical device equipped with a medical connector, etc. [Brief description of the drawings]

[0025] [Figure 1] FIG. 1 is an explanatory diagram showing a configuration of a medical connector according to a first embodiment; [Diagram 2] FIG. 2 is an explanatory diagram showing the configuration of the medical connector shown in FIG. 1. [Diagram 3] FIG. 1 is an explanatory diagram showing the configuration of an opening and closing mechanism of a hemostasis valve of a medical connector; [Figure 4] FIG. 4 is an explanatory diagram showing the configuration of the opening / closing mechanism shown in FIG. 3. [Diagram 5] FIG. 1 is an explanatory diagram showing the configuration of an opening / closing mechanism. [Figure 6] FIG. 13 is a cross-sectional perspective view showing the configuration of a housing of the opening / closing mechanism; [Figure 7] FIG. 2 is a perspective view showing the external configuration of a penetrating member and an operating member of the opening / closing mechanism; [Figure 8] FIG. 13 is an explanatory diagram showing the position of a pin in the operation restriction groove of the opening / closing mechanism; [Figure 9] An explanatory diagram showing the position of the pin in the operation restriction groove. [Figure 10]FIG. 1 is an explanatory diagram showing a configuration of a fixing mechanism in a first embodiment; [Figure 11] FIG. 2 is an explanatory diagram showing the configuration of the fixing mechanism shown in FIG. [Figure 12] FIG. 2 is a perspective view showing the external configuration of a cylindrical body, a pressing member, and a force transmission member of the fixing mechanism; [Figure 13] FIG. 2 is a perspective view showing the external configuration of an operating member of the fixing mechanism and a holding mechanism; [Figure 14] FIG. 4 is a perspective view showing the external configuration of an outer cylinder of the fixing mechanism; [Figure 15] FIG. 13 is an explanatory diagram showing the external configuration of a medical connector according to a second embodiment; [Figure 16] FIG. 16 is an explanatory diagram showing the configuration of the opening and closing mechanism of the hemostasis valve of the medical connector shown in FIG. [Figure 17] FIG. 17 is an explanatory diagram showing the configuration of the opening / closing mechanism shown in FIG. 16. [Figure 18] FIG. 1 is an explanatory diagram showing the configuration of an opening / closing mechanism. [Figure 19] FIG. 2 is a perspective view showing the external configuration of a penetrating member and an operating member of the opening / closing mechanism; [Figure 20] FIG. 2 is a perspective view showing the external configuration of a penetrating member and an operating member; [Figure 21] FIG. 13 is an explanatory diagram showing the position of a pin in the operation restriction groove of the opening / closing mechanism; [Figure 22] An explanatory diagram showing the position of the pin in the operation restriction groove. [Diagram 23] FIG. 13 is an external perspective view showing the configuration of an operating member of the opening / closing mechanism. [Figure 24] FIG. 13 is an explanatory diagram showing a vertical cross-sectional configuration of a medical connector according to a third embodiment. [Diagram 25] FIG. 25 is an explanatory diagram showing a state in which the fixation of the long medical device is released in the fixing mechanism shown in FIG. 24. [Figure 26] FIG. 25 is an explanatory diagram showing a state in which a long medical device is fixed in the fixing mechanism shown in FIG. 24. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] A. First embodiment: A-1. Medical connector configuration: 1 and 2 are explanatory diagrams showing the configuration of the medical connector in the first embodiment. FIG. 1 shows a schematic external configuration of the medical connector 10, and FIG. 2 shows the configuration of its longitudinal section (YZ section). The medical connector 10 is a Y connector that is connected to a guiding catheter GC via a rotator 20 and used. In this specification, in the medical connector 10, the side to which the guiding catheter GC is connected (Z-axis positive direction side) is referred to as the tip side, and the opposite side (Z-axis negative direction side) is referred to as the base side. In addition, with respect to the medical connector 10 and each of its components, the tip side end is referred to as the "tip", the tip and its vicinity are referred to as the "tip part", the base side end is referred to as the "base end", and the base end and its vicinity are referred to as the "base end part". In addition, for convenience of explanation, the Z-axis direction is referred to as the front-back direction, the Y-axis direction is referred to as the up-down direction, the Y-axis positive direction is referred to as the up direction, the Y-axis negative direction is referred to as the down direction, and the X-axis direction is referred to as the left-right direction. However, the posture of the medical connector 10 is not limited to this. In the following description, in the cross-sectional view shown in FIG. 2, the side view of some members may be shown.

[0027] The medical connector 10 has a tubular main pipe 11 extending in the front-rear direction, and a tubular branch pipe 12 branching from the vicinity of the tip of the main pipe 11 and extending obliquely upward toward the base end side. A lumen 13 extending in the front-rear direction and penetrating the main pipe 11 is formed in the main pipe 11, and a long medical device (not shown) such as a guidewire or a catheter is introduced into the guiding catheter GC via the lumen 13. A lumen 14 communicating with the lumen 13 of the main pipe 11 is formed in the branch pipe 12, and a liquid such as a contrast medium or physiological saline is supplied via the lumen 14 from a liquid supply device (not shown) connected to the end of the branch pipe 12.

[0028] The medical connector 10 includes an opening / closing mechanism 100 for a hemostatic valve and a fixing mechanism 200 for a long medical device. The opening / closing mechanism 100 is provided on the base end side of the fixing mechanism 200. The opening / closing mechanism 100 constitutes a part of the base end side of the main pipe portion 11 of the medical connector 10, and the fixing mechanism 200 constitutes a part of the tip end side of the main pipe portion 11 of the medical connector 10 and the branch pipe portion 12. Below, the configurations of the opening / closing mechanism 100 and the fixing mechanism 200 will be described in order.

[0029] The medical connector 10 is used by being held by an operator such as a doctor. For example, the operator supports the main pipe portion 11 of the medical connector 10 in the posture shown in Fig. 1 so that the four fingers, from the index finger to the little finger, of the hand that is not holding the long medical device cover the main pipe portion 11 from above, and holds the medical connector 10 so that the thumb is positioned near the operating member 140 of the opening / closing mechanism 100 or the operating member 280 of the fixing mechanism 200.

[0030] A-2. Opening and closing mechanism configuration: Next, the configuration of the opening / closing mechanism 100 of the hemostasis valve 120 will be described. Fig. 3 to Fig. 5 are explanatory diagrams showing the configuration of the opening / closing mechanism 100 in the first embodiment. Fig. 3 shows the configuration of the longitudinal section (YZ section) of the opening / closing mechanism 100, and Figs. 4 and 5 show its cross-sectional oblique views. Figs. 3 and 4 show the opening / closing mechanism 100 in a state in which the hemostasis valve 120 is closed (hereinafter referred to as "closed state opening / closing mechanism 100c"), and Fig. 5 shows the opening / closing mechanism 100 in a state in which the hemostasis valve 120 is open (hereinafter referred to as "open state opening / closing mechanism 100o").

[0031] The opening and closing mechanism 100 is a mechanism for opening and closing the hemostatic valve 120 that suppresses the outflow of blood through the lumen 13 of the main tube portion 11 of the medical connector 10. The opening and closing mechanism 100 is a mechanism that switches between a state in which the hemostatic valve 120 is closed and a state in which the hemostatic valve 120 is opened every time an operator applies a pressing operation to the operating member 140. The opening and closing mechanism 100 includes a housing 110, a hemostatic valve 120, a penetrating member 130, an operating member 140, a biasing member 106, and a pin 172.

[0032] 6 is a cross-sectional perspective view showing the configuration of the housing 110. The housing 110 is a tubular member in which a tip-side opening 112 and a base-side opening 111 are formed, and a lumen 113 is formed in communication with the tip-side opening 112 and the base-side opening 111. The lumen 113 is a through hole extending in the front-rear direction (Z-axis direction), and constitutes a part of the lumen 13 of the main pipe portion 11 of the medical connector 10. The housing 110 is formed of, for example, resin. As shown in FIG. 2, the base end portion of the fixing mechanism 200 is inserted and fixed in the lumen 113. The Z-axis direction is an example of a first direction in the claims.

[0033] A substantially flat partition wall 114 is formed near the center of the housing 110 in the front-rear direction and is substantially perpendicular to the front-rear direction. The partition wall 114 is formed with a through hole 114A that penetrates the partition wall 114 in the front-rear direction and constitutes a part of the lumen 113. The cross-sectional shape of the through hole 114A is, for example, substantially circular. A guide groove 115 is formed on the side surface of the inside of the housing 110, extending from the position of the partition wall 114 to the base end side. A pair of guide grooves 115 are formed to face each other in the left-right direction (X-axis direction). An operating member accommodating space 116 is formed at the base end portion of the inside of the housing 110, which communicates with the lumen 113 and extends obliquely downward to the base end side and opens on the surface of the housing 110. A biasing member accommodating space 118 that extends in the front-rear direction is formed in the lower part of the inside of the housing 110. A groove 117 for accommodating a pin 172 is formed in the upper part of the inside of the housing 110.

[0034] As shown in Figs. 3 to 5, the hemostasis valve 120 is a substantially disc-shaped member and is made of an elastic material such as silicone rubber. The hemostasis valve 120 is fixed inside the housing 110 at a position distal to the partition wall 114. A slit 121 is formed in the hemostasis valve 120 at a substantially central position as viewed in the Z-axis direction (Fig. 4). The hemostasis valve 120 is normally in a closed state in which the slit 121 is closed and the valve is closed (Figs. 3 and 4). When the hemostasis valve 120 is in a closed state, the hemostasis valve 120 closes the lumen 113 of the housing 110 (i.e., the lumen 13 of the main tube portion 11), and blood outflow from the hemostasis valve 120 to the base end side via the lumen 113 is suppressed. Furthermore, when the hemostatic valve 120 is pressed from the base end side, each piece separated by the slit 121 is elastically deformed so as to be displaced toward the tip end side, and the hemostatic valve 120 is in an open state in which a through hole 122 penetrating the hemostatic valve 120 in the front-rear direction is formed (FIG. 5). In the open state, the through hole 122 communicates with the tip side opening 112 via the lumen 113. Therefore, when the hemostatic valve 120 is in an open state, the lumen 113 is not closed at the position of the hemostatic valve 120 and is in an open state. When the pressing force from the base end side is removed, the hemostatic valve 120 is elastically deformed and returns to a closed state. In this embodiment, a substantially annular boss 128 is disposed between the hemostatic valve 120 and the partition wall 114.

[0035] FIG. 7 is a perspective view showing the external configuration of the penetrating member 130 and the operating member 140. As shown in FIGS. 3 to 5 and 7, the penetrating member 130 is a member in which a through hole 132 extending in the front-rear direction is formed, and is made of, for example, resin. More specifically, the penetrating member 130 has a substantially cylindrical main body portion 131 in which the through hole 132 extending in the front-rear direction is formed, a substantially flat flange portion 133 that protrudes downward from near the center in the front-rear direction of the main body portion 131 and is substantially perpendicular to the front-rear direction, and a substantially flat upper wall portion 136 that is disposed above the main body portion 131 and is substantially perpendicular to the up-down direction. The flange portion 133 also protrudes above the main body portion 131, and the upper wall portion 136 is shaped to extend from the upper end of the flange portion 133 to the base end side. As shown in Fig. 7, a pair of guide protrusions 134 protruding in the left-right direction are formed on the side surface of flange portion 133, and a continuous guide protrusion 135 extending in the up-down direction is formed on the base end surface of flange portion 133. A movement restricting groove 137 is formed on the upper surface of upper wall portion 136. Movement restricting groove 137 is a so-called heart cam groove, and is a groove that is connected in a heart shape. The up-down direction is an example of a third direction in the claims.

[0036] The penetrating member 130 is accommodated inside the housing 110 on the proximal side of the hemostatic valve 120. In the penetrating member 130, a through hole 132 of a main body portion 131 communicates with a proximal opening 111 of the housing 110. Furthermore, the through hole 132 and the lumen 113 are coaxial with each other.

[0037] In the penetrating member 130, a pair of guide protrusions 134 (FIG. 7) on which flanges 133 are formed are fitted into a pair of guide grooves 115 (FIG. 6) formed in the housing 110. This allows the penetrating member 130 to slide in the front-rear direction using the guide grooves 115 as a guide, with its vertical and horizontal positions relative to the housing 110 being determined. The penetrating member 130 is positioned such that its main body 131 faces the through hole 114A of the partition wall 114 in the front-rear direction. The penetrating member 130, which is slidable in the front-rear direction, can be positioned at a pressing position P2 (the state shown in FIG. 5) where the tip of the main body 131 is inserted into the through hole 114A and presses the hemostasis valve 120 to open the hemostasis valve 120, and at a non-pressing position P1 (the state shown in FIGS. 3 and 4) where the hemostasis valve 120 is not pressed and the hemostasis valve 120 is closed. As shown in Fig. 5, when the penetrating member 130 is located at the pressing position P2, the through hole 122 formed in the hemostasis valve 120 and the through hole 132 of the penetrating member 130 communicate with each other. The tip side of the penetrating member 130 can move to a position where the flange portion 133 abuts against the partition wall 114, and the base end side of the penetrating member 130 can move to a position where the base end of the penetrating member 130 abuts against a convex portion 119 (Figs. 3 and 6) formed at the base end of the housing 110. The pressing position P2 is an example of a second position in the claims, and the non-pressing position P1 is an example of a first position in the claims.

[0038] The biasing member 106 is a member that biases the penetrating member 130 toward the base end side, and is accommodated in the biasing member accommodating space 118 of the housing 110. In this embodiment, a substantially cylindrical spring is used as the biasing member 106. The spring is made of a metal such as stainless steel. The penetrating member 130 biased toward the base end side by the biasing member 106 is located at a non-pressing position P1 (FIGS. 3 and 4) where the penetrating member 130 does not press the hemostasis valve 120 when it is not subjected to a force from the operating member 140 or the pin 172. In this embodiment, a protruding convex portion 139 is formed on a surface of the flange portion 133 of the penetrating member 130 that faces the biasing member 106, and the convex portion 139 is inserted into the hollow portion of the biasing member 106.

[0039] The pin 172 is a long, thin member, and is made of a metal such as stainless steel. The pin 172 is attached to the housing 110 in a position extending in the front-rear direction. The tip end of the pin 172 is accommodated in a groove 117 formed in the housing 110 and its position is fixed. The base end 173 of the pin 172 is bent and loosely fitted into a movement restricting groove 137 formed in the upper wall portion 136 of the penetrating member 130. The position of the end 173 in the movement restricting groove 137 changes in accordance with the sliding of the penetrating member 130 in the front-rear direction (Z-axis direction).

[0040] Figures 8 and 9 are explanatory diagrams showing the position of the pin 172 in the operation restriction groove 137. Figures 8 and 9 show the top configurations of the pin 172, the penetrating member 130, and the hemostasis valve 120. Figure 8 shows a closed state opening and closing mechanism 100c in which the penetrating member 130 is in the non-pressed position P1 and the hemostasis valve 120 is closed, and Figure 9 shows an open state opening and closing mechanism 100o in which the penetrating member 130 is in the pressed position P2 and a through hole 122 is formed in the hemostasis valve 120.

[0041] As shown by the outline arrows in Figs. 8 and 9, with the sliding of the penetrating member 130 in the front-rear direction (Z-axis direction), the end 173 of the pin 172 moves relatively in one direction (counterclockwise in the illustrated example) in the movement restricting groove 137 while swinging in the left-right direction (X-axis direction). That is, as shown in Fig. 8, in a first state in which the penetrating member 130 is in the non-pressing position P1, the end 173 is located at the bottom of the heart shape of the movement restricting groove 137 (hereinafter referred to as "closed position portion 137A"). In this state, the movement of the penetrating member 130 in the front-rear direction is not restricted by the pin 172. When the penetrating member 130 moves from the first state toward the tip side (positive direction of the Z-axis), the end 173 moves relatively to the base end side in the movement restricting groove 137. In a second state in which the penetrating member 130 is displaced from the non-pressing position P1 to the pressing position P2 and further reaches a position on the tip side of the pressing position P2, the end 173 is located at one of a pair of apexes (hereinafter referred to as "first apex 137B") that sandwich the heart-shaped valley of the movement restricting groove 137. In this state, the movement of the penetrating member 130 toward the base end side is not restricted by the pin 172. In a third state in which the penetrating member 130 moves from the second state to the pressing position P2 so as to return slightly to the base end side, as shown in FIG. 9, the end 173 moves relatively toward the tip side within the movement restricting groove 137 and reaches the heart-shaped valley of the movement restricting groove 137 (hereinafter referred to as "open holding portion 137C"). In this state, the movement of the penetrating member 130 toward the base end side is restricted by the interference between the pin 172 and the movement restricting groove 137, and the penetrating member 130 is maintained at the pressing position P2. In a fourth state in which the penetrating member 130 moves slightly from the third state toward the tip end to a position further toward the tip end than the pressing position P2, the end 173 moves relatively toward the base end within the movement restricting groove 137 and is located at the other of a pair of apexes (hereinafter referred to as the "second apex 137D") that sandwich the heart-shaped valley of the movement restricting groove 137. In this state, the movement of the penetrating member 130 toward the base end is not restricted by the pin 172. When the penetrating member 130 moves from the fourth state toward the base end to the non-pressing position P1, the end 173 moves relatively toward the tip end within the movement restricting groove 137 and returns to the closed position portion 137A of the movement restricting groove 137 (FIG. 8).

[0042] As shown in FIG. 3 to FIG. 5 and FIG. 7, the operation member 140 is an elongated member extending in a direction (hereinafter referred to as "operation direction D2") that is not parallel to the front-rear direction (Z-axis direction). In this embodiment, the operation direction D2 is a direction that forms an angle of 35 degrees or more and 55 degrees or less with the front-rear direction, for example, a direction that forms an angle of 45 degrees with the front-rear direction (a diagonal direction of 45 degrees from the upper tip side to the lower base end side). The operation member 140 is accommodated in the operation member accommodation space 116 of the housing 110 so as to be slidable in the operation direction D2. In this embodiment, the operation member 140 is arranged to face the biasing member 106 in the front-rear direction. The operation member 140 is formed of, for example, resin. The operation direction D2 is an example of a second direction in the claims.

[0043] The operating member 140 has a substantially cylindrical operation receiving portion 141 and a substantially polyhedral connecting portion 142 located on the tip side thereof. A portion of the base end side of the operation receiving portion 141 is exposed from the housing 110, and can be pressed by an operator such as a doctor. A tip surface 143 of the connecting portion 142 is flat and substantially perpendicular to the front-rear direction, and abuts against the base end side surface of the flange portion 133 of the penetrating member 130. As shown in FIG. 7, a guide groove 144 extending in the vertical direction is formed on the tip surface 143, and a guide protrusion 135 formed on the base end side surface of the flange portion 133 is fitted into the guide groove 144. In addition, a recess 145 capable of accommodating the base end portion of the main body portion 131 of the penetrating member 130 is formed on the upper surface of the connecting portion 142.

[0044] Since the operating member 140 has the above-mentioned configuration, it can slide relatively to the penetrating member 130 along the up-down direction while abutting against the base end surface of the flange portion 133 of the penetrating member 130. That is, as shown in Figs. 3 and 4, when the penetrating member 130 is in a non-pressing position P1 where it does not press the hemostatic valve 120, the operating member 140 is in a retracted position retracted downward to the base end side. When the operating member 140 slides from the retracted position to the inside of the housing 110 along the operating direction D2 (i.e., obliquely upward), the operating member 140 slides upward relative to the penetrating member 130 while maintaining a state in which the guide protrusion 135 of the penetrating member 130 is engaged with the guide groove 144 of the operating member 140, and presses the penetrating member 130 to displace it toward the tip side. The sliding range of the operating member 140 is set to a range in which the penetrating member 130 can be moved from the pressing position P2 to the tip side.

[0045] A-3. Operation of the opening and closing mechanism: Next, the operation of the opening / closing mechanism 100 of the hemostasis valve 120 will be described. In the initial state, as shown in Figs. 3 and 4, the penetrating member 130 is located at a non-pressing position P1 where it does not press the hemostasis valve 120 by receiving the biasing force of the biasing member 106, and the operating member 140 is located at a retracted position by indirectly receiving the biasing force via the penetrating member 130. In this state, the hemostasis valve 120 is closed, and the opening / closing mechanism 100 becomes a closed-state opening / closing mechanism 100c. At this time, as shown in Fig. 8, the end 173 of the pin 172 is located at the closed position portion 137A in the operation restriction groove 137 of the upper wall portion 136 of the penetrating member 130.

[0046] For example, when a valve opening operation is performed by pressing the operation receiving portion 141 of the operating member 140 toward the inside of the housing 110 (i.e., diagonally upward) along the operation direction D2 with the thumb of the operator holding the medical connector 10, the operating member 140 slides diagonally upward along the operation direction D2. Accordingly, the penetrating member 130 is pressed by the operating member 140 and moves toward the tip side. In addition, the end portion 173 of the pin 172 moves relatively toward the base end side within the operation restriction groove 137 formed in the penetrating member 130. When the penetrating member 130 moves toward the tip side by more than a certain distance, the tip portion of the main body portion 131 of the penetrating member 130 presses the hemostatic valve 120 to open the hemostatic valve 120. When the valve opening operation by the operator is released after the penetrating member 130 reaches a position on the distal side of the pressing position P2 and the end portion 173 reaches the first apex 137B of the movement restriction groove 137, the penetrating member 130 returns slightly to the proximal side due to the biasing force of the biasing member 106, and the end portion 173 moves relatively to the distal side within the movement restriction groove 137 to reach the open holding portion 137C, as shown in FIG. 9. In this state, the penetrating member 130 is maintained in the pressing position P2 because the movement of the penetrating member 130 toward the proximal side is restricted by the interference between the pin 172 and the movement restriction groove 137. As a result, the opening / closing mechanism 100 becomes the open state opening / closing mechanism 100o shown in FIG. 5.

[0047] In addition, when the opening / closing mechanism 100 is in the open state opening / closing mechanism 100o, for example, when a valve closing operation is performed by the operator's thumb to press the operation receiving portion 141 of the operating member 140 toward the inside of the housing 110 (i.e., diagonally upward) along the operating direction D2, similar to the valve opening operation, the operating member 140 slides diagonally upward along the operating direction D2. Accordingly, the penetrating member 130 is pressed by the operating member 140 and moves to a position on the distal side of the pressing position P2. In addition, the end portion 173 moves relatively from the open holding portion 137C in the operation restricting groove 137 toward the proximal side to reach the second apex 137D. In this state, the movement of the penetrating member 130 toward the proximal side is not restricted by the pin 172. Therefore, when the operator releases the valve closing operation, the penetrating member 130 moves toward the proximal side by the biasing force of the biasing member 106 and returns to the non-pressing position P1. 8, the end 173 moves relatively toward the tip side within the operation restriction groove 137 to return to the closed position portion 137A. As a result, the hemostasis valve 120 is closed, and the opening / closing mechanism 100 becomes the closed-state opening / closing mechanism 100c shown in FIGS.

[0048] In this manner, every time the operating member 140 is pressed (valve opening operation or valve closing operation), the opening / closing mechanism 100 switches between the closed state opening / closing mechanism 100c and the open state opening / closing mechanism 100o.

[0049] A-4. Technical effect of the opening and closing mechanism: As described above, in the opening / closing mechanism 100 of the present embodiment, when the penetrating member 130 is located at the non-pressing position P1 and the hemostatic valve 120 is changed from an open state to a closed state or from a closed state to an open state, the operating member 140 is pressed. At this time, since the operating member 140 is slidable along the operating direction D2 non-parallel to the extension direction (Z-axis direction) of the lumen 113 of the housing 110, the opening / closing operation of the hemostatic valve 120 is an operation of pressing the operating member 140 in the operating direction D2 non-parallel to the extension direction of the lumen 113 of the housing 110. Therefore, according to the opening / closing mechanism 100 of the present embodiment, the operator can easily open and close the hemostatic valve 120 with his thumb while holding the medical connector 10, and the operability of the opening / closing mechanism 100 can be improved.

[0050] The biasing member 106 is cylindrical, and a convex portion 139 to be inserted into the hollow portion of the biasing member 106 is formed on the surface of the penetrating member 130 that faces the biasing member 106. Therefore, according to the opening and closing mechanism 100, the positioning between the penetrating member 130 and the biasing member 106 can be easily and accurately performed, and the biasing force of the biasing member 106 can be effectively transmitted to the penetrating member 130, thereby improving the accuracy of the operation of the opening and closing mechanism 100.

[0051] The angle between the extension direction (Z-axis direction) of the lumen 113 of the housing 110 and the operation direction D2 of the operation member 140 is 35 degrees or more and 55 degrees or less. Therefore, according to the opening and closing mechanism 100 of the present embodiment, the operator can extremely easily open and close the hemostatic valve 120 with his or her thumb while holding the medical connector 10, and the operability of the opening and closing mechanism 100 can be effectively improved.

[0052] The biasing member 106 and the operating member 140 are disposed so as to face each other in the extension direction (Z-axis direction) of the lumen 113 of the housing 110. Therefore, according to the opening / closing mechanism 100 of this embodiment, the pressing force applied to the operating member 140 can be efficiently transmitted to the biasing member 106 to deform the biasing member 106, and the operability of the opening / closing mechanism 100 can be effectively improved.

[0053] The penetrating member 130 has a main body 131 in which a through hole 132 is formed, and a flange 133 protruding in the up-down direction from the main body 131, and the operating member 140 is configured to be slidable relative to the penetrating member 130 along the up-down direction while abutting against the surface of the base end side of the flange 133 of the penetrating member 130. Therefore, according to the opening / closing mechanism 100 of this embodiment, the sliding of the operating member 140 along the operating direction D2 non-parallel to the extension direction (Z-axis direction) of the lumen 113 of the housing 110 and the sliding of the penetrating member 130 in the extension direction (Z-axis direction) can be efficiently converted, and the operability of the opening / closing mechanism 100 can be effectively improved.

[0054] A-5. Fixing mechanism configuration: Next, the configuration of the fixing mechanism 200 for the long medical device will be described. Figures 10 and 11 are explanatory diagrams of the configuration, showing the configuration of a longitudinal section (YZ section) of the fixing mechanism 200 (side configuration for some members). Figure 10 shows the fixing mechanism 200 in a state in which the fixing of a long medical device such as a guidewire GW is released (hereinafter referred to as "released state fixing mechanism 200n"), and Figure 11 shows the fixing mechanism 200 in a state in which a long medical device is fixed (hereinafter referred to as "fixed state fixing mechanism 200f").

[0055] The fixing mechanism 200 is a mechanism for fixing or releasing the long medical device inserted into the lumen 13 of the main tube portion 11 (FIG. 2) of the medical connector 10. The fixing mechanism 200 is a mechanism that switches between a fixed state in which the long medical device is fixed and a released state in which the fixation of the long medical device is released, every time an operator applies a pressing operation to the operating member 280. The fixing mechanism 200 includes a housing 210, a circular tubular body 290, a pressing member 240, an operating member 280, a force transmission member 230, and a holding mechanism 260.

[0056] The housing 210 is a tubular member in which a tip-side opening 212 and a base-side opening 211 are formed, and a lumen 213 is formed in communication with the tip-side opening 212 and the base-side opening 211. The lumen 213 is a through hole extending in the front-rear direction (Z-axis direction), and constitutes a part of the lumen 13 of the medical connector 10. The housing 210 is formed, for example, from a resin. A branch pipe section 12 is formed at the tip of the housing 210. As shown in FIG. 2, the base end of the housing 210 is inserted into and fixed to the lumen 113 at the tip of the housing 110 of the opening / closing mechanism 100. In this embodiment, the base end of the housing 210 of the fixing mechanism 200 restricts the movement of the hemostatic valve 120 of the opening / closing mechanism 100 toward the tip side.

[0057] A circular tubular body accommodating space 215, which is an expanded diameter portion of the lumen 213, is formed inside the housing 210 near the center in the front-rear direction. Moreover, above the circular tubular body accommodating space 215 inside the housing 210, an evacuation space 214 is formed which communicates with the circular tubular body accommodating space 215 near the center in the front-rear direction. Moreover, below the circular tubular body accommodating space 215, a member accommodating space 216 is formed which communicates with the circular tubular body accommodating space 215 near the center in the front-rear direction, extends obliquely downward toward the base end, and opens to the surface of the housing 210.

[0058] FIG. 12 is a perspective view showing the external configuration of the circular tubular body 290, the pressing member 240, and the force transmission member 230 in the first embodiment. The circular tubular body 290 is a flexible circular tubular member having a through hole 291 formed therein, into which a long medical device such as a guide wire GW is inserted. The circular tubular body 290 is formed of an elastic material such as silicone rubber. As shown in FIG. 10 and FIG. 11, the circular tubular body 290 is attached in the circular tubular body accommodating space 215 in such a position that the axis is parallel to the front-rear direction (Z-axis direction). In the circular tubular body 290 attached to the housing 210, the through hole 291 communicates with the distal end opening 212 and the proximal end opening 211 of the housing 210. The through hole 291 and the lumen 213 of the housing 210 are coaxial with each other. The front-rear direction (Z-axis direction) is an example of a fifth direction in the claims.

[0059] 10 and 11, stoppers 220 having a substantially circular tube shape are attached to both ends of the circular tubular body 290. Each stopper 220 has a main body 221 having a substantially same diameter as the circular tubular body 290, a first small diameter portion 223 located on the circular tubular body 290 side with respect to the main body 221 and having a smaller diameter than the main body 221, and a second small diameter portion 222 located on the opposite side of the circular tubular body 290 with respect to the main body 221 and having a smaller diameter than the main body 221. The first small diameter portion 223 of each stopper 220 is inserted into a through hole 291 of the circular tubular body 290. In addition, a recess 224 into which a protrusion (not shown) of the housing 210 fits is formed in the main body 221 of each stopper 220. Each stopper 220 is positioned in the front-rear direction relative to the housing 210 by the engagement of the protrusions with the recesses 224, and as a result, the circular tubular body 290 is positioned in the front-rear direction relative to the housing 210.

[0060] 12, the pressing member 240 is a member in which a through hole 241 extending in the front-rear direction is formed, and is made of, for example, resin. The pressing member 240 is substantially rectangular parallelepiped, and the length (dimension in the front-rear direction) of the portion above the center position of the through hole 241 is longer than the other portions. The inner diameter of the through hole 241 is substantially the same as the outer diameter of the circular tubular body 290, and the circular tubular body 290 is inserted into the through hole 241. In addition, the lower surface 244 of the pressing member 240 is a substantially flat surface that is substantially perpendicular to the up-down direction, and is provided with a guide protrusion 245 that extends continuously in the front-rear direction.

[0061] As shown in Fig. 10 and Fig. 11, the pressing member 240 is accommodated throughout the retraction space 214, the tubular body accommodating space 215, and the member accommodating space 216 of the housing 210. The pressing member 240 is slidable along the vertical direction (Y-axis direction) that is a direction perpendicular to the axial direction (Z-axis direction) of the tubular body 290. The pressing member 240 that is slidable in the vertical direction can be positioned at a non-pressing position P5 where the through hole 241 is coaxial with the through hole 291 of the tubular body 290, as shown in Fig. 10, and at a pressing position P6 displaced upward from the non-pressing position P5, as shown in Fig. 11. When the pressing member 240 is positioned at the non-pressing position P5 (Fig. 10), the pressing member 240 does not substantially press the tubular body 290. The state where no substantial pressing is performed here includes a state in which the inner circumferential surface of through hole 241 of pressing member 240 and the outer circumferential surface of circular tubular body 290 are separated from each other, as well as a state in which the inner diameter of through hole 241 of pressing member 240 is the same as or slightly smaller than the outer shape of circular tubular body 290 before insertion into through hole 241, so that the inner circumferential surface of through hole 241 of pressing member 240 and the outer circumferential surface of circular tubular body 290 are in close contact with each other. The up-down direction (Y-axis direction) is an example of a sixth direction in the claims, and non-pressing position P5 is an example of a fifth position in the claims.

[0062] On the other hand, when the pressing member 240 is located at the pressing position P6 (FIG. 11), the pressing member 240 presses a portion (the central portion in the front-rear direction in this embodiment) of the circular tubular body 290 excluding both ends upward from the outer periphery, elastically deforming the circular tubular body 290. In this state, the inner circumferential surface of the elastically deformed circular tubular body 290 (mainly the contact point CP1 which is the lower portion of the inner circumferential surface of the deformed portion in the circular tubular body 290) is pressed against the long medical device, and the long medical device is supported so as to be sheared by a total of three points, namely the contact point CP1 and the contact point CP2 which is the upper portion of the inner circumferential surface of both ends of the circular tubular body 290 (or the stopper 220), thereby being fixed to the fixing mechanism 200 and sliding in the front-rear direction is restricted. The retraction space 214 of the housing 210 has a sufficient size for the pressing member 240 to deform the tubular body 290 to an extent that the elongated medical device can be fixed. The pressing position P6 is an example of a sixth position in the claims.

[0063] FIG. 13 is a perspective view showing the external configuration of the operating member 280 and the holding mechanism 260 in the first embodiment. As shown in FIG. 10, FIG. 11, and FIG. 13, the operating member 280 is a substantially cylindrical member extending in a direction (hereinafter referred to as "operation direction D7") that is not parallel to the front-rear direction (Z-axis direction). In this embodiment, the operation direction D7 is a direction that forms an angle of 35 degrees or more and 55 degrees or less with the front-rear direction, for example, a direction that forms an angle of 45 degrees with the front-rear direction (a diagonal direction of 45 degrees from the upper tip side toward the lower base end side). The operating member 280 is supported by an outer tube 250 of the holding mechanism 260 described later, and is slidable along the operation direction D7. A part of the base end side of the operating member 280 is exposed from the outer tube 250, and can be pressed by an operator such as a doctor. The operating member 280 is formed of, for example, resin. The operation direction D7 is an example of a seventh direction in the claims.

[0064] 12, the force transmission member 230 is a substantially polygonal member and is made of, for example, resin. An upper surface 234 of the force transmission member 230 is a substantially flat surface that is substantially perpendicular to the up-down direction, and is formed with a guide groove 235 that extends continuously in the front-rear direction. A guide protrusion 245 of the pressing member 240 fits into this guide groove 235. In addition, a protruding protrusion 232 is formed on a surface 233 on the lower base end side of the force transmission member 230.

[0065] 10 and 11, the force transmission member 230 is accommodated in the member accommodating space 216 of the housing 210 so as to be located between the pressing member 240 and the operating member 280, and is slidable along the operating direction D7. The force transmission member 230 is capable of transmitting to the pressing member 240 a force that moves the operating member 280 toward the pressing member 240 along the operating direction D7.

[0066] Since the force transmission member 230 has the above-mentioned configuration, it can slide relatively to the pressing member 240 along the front-rear direction (Z-axis direction) while abutting against the lower surface 244 of the pressing member 240. That is, as shown in FIG. 10, when the pressing member 240 is in a non-pressing position P5 where the pressing member 240 does not press the circular tubular body 290, the force transmission member 230 is in a retracted position P7 retracted toward the lower base end side. When the force transmission member 230 is in the retracted position P7, the force transmission member 230 does not press the pressing member 240. In a state where the pressing member 240 is not pressed by the force transmission member 230, the pressing member 240 is located at the non-pressing position P5 due to the elastic restoring force of the circular tubular body 290. The retracted position P7 is an example of a seventh position in the claims.

[0067] 11, when the force transmission member 230 slides obliquely upward from the retracted position P7 along the operation direction D7 and moves from the retracted position P7 to the advanced position P8 closer to the circular tubular body 290, the force transmission member 230 slides toward the tip side relative to the pressing member 240 while maintaining a state in which the guide protrusion 245 of the pressing member 240 is fitted into the guide groove 235 of the force transmission member 230. When the force transmission member 230 is in the advanced position P8, the force transmission member 230 presses the pressing member 240 to position the pressing member 240 at the pressing position P6. The advanced position P8 is an example of the eighth position in the claims.

[0068] 13, the holding mechanism 260 employs a so-called double knock mechanism, and switches between a state in which the force transmission member 230 is held at a retreated position P7 and a state in which the force transmission member 230 is held at an advanced position P8 each time the operating member 280 slides along the operating direction D7. The holding mechanism 260 has an outer cylinder 250, a rotor 270, and a biasing member 262. In this embodiment, a part of the operating member 280 also constitutes a part of the holding mechanism 260.

[0069] FIG. 14 is a perspective view showing the external configuration of the outer cylinder 250 in the first embodiment. As shown in FIG. 13 and FIG. 14, the outer cylinder 250 is a substantially cylindrical member, and is formed of, for example, resin. As shown in FIG. 10 and FIG. 11, the outer cylinder 250 is attached to the tip of the part in the housing 210 where the member accommodating space 216 is formed, with its axial direction coinciding with the operation direction D7. As shown in FIG. 14, a tooth-shaped outer cylinder end face cam 253 is formed on the inner peripheral surface of the outer cylinder 250. The outer cylinder end face cam 253 is a cam in which shallow groove portions 254 and deep groove portions 255 are alternately formed in the circumferential direction. In this embodiment, the outer cylinder end face cam 253 has four shallow groove portions 254 and four deep groove portions 255.

[0070] A tooth-shaped operating member end cam 282 is formed on the end face of the upper tip side of the approximately cylindrical operating member 280. In addition, a plurality of (four) sliding contacts 281, which are approximately rectangular parallelepiped protrusions, are formed on the outer circumferential surface of the operating member 280. The operating member 280 is inserted into the hollow portion of the outer tube 250, and each sliding contact 281 on the outer circumferential surface of the operating member 280 fits into each deep groove portion 255 on the inner circumferential surface of the outer tube 250. As a result, the operating member 280 is slidable along the axial direction of the outer tube 250, i.e., along the operating direction D7, with its rotation restricted relative to the outer tube 250.

[0071] The rotor 270 is a substantially disk-shaped member, and is made of, for example, resin. A plurality of (four) protrusions 273 are formed on the outer peripheral surface of the rotor 270. Teeth are formed on the surface of the lower base end side of each of the protrusions 273 of the rotor 270. Here, the pitch of the crests of the operation member end face cam 282 of the operation member 280 is shifted by about 1 / 2 of the pitch of the crests of the outer cylinder end face cam 253 of the outer cylinder 250, and each of the protrusions 273 of the rotor 270 cannot simultaneously mesh with both the operation member end face cam 282 and the outer cylinder end face cam 253. In addition, a recess 274 is formed on the surface of the upper tip side of the rotor 270.

[0072] The biasing member 262 is a substantially cylindrical spring, and is made of a metal such as stainless steel. The biasing member 262 is disposed between the rotor 270 and the force transmission member 230 (FIG. 12), and biases the force transmission member 230 in a direction approaching the pressing member 240. One end of the biasing member 262 is inserted into a recess 274 of the rotor 270, and the protrusion 232 of the force transmission member 230 is inserted into the hollow portion of the other end of the biasing member 262.

[0073] In the rotor retracted state where each of the protrusions 273 of the rotor 270 is fitted into the deep groove portion 255 of the outer cylinder end surface cam 253 of the outer cylinder 250, the rotor 270 is located at a position retracted downward toward the base end side using the deep groove portion 255 as a guide. Therefore, in the rotor retracted state, as shown in Fig. 10, the force transmission member 230 is located at a retracted position P7 retracted downward toward the base end side, and as a result, the pressing member 240 is located at a non-pressing position P5. The rotor retracted state is maintained as long as the operating member 280 does not slide.

[0074] In the rotor retracted state, when the operating member 280 advances toward the upper tip side along the operating direction D7, the operating member end face cam 282 engages with each convex portion 273 of the rotor 270, and the rotor 270 advances in the same direction together with the operating member 280. When the rotor 270 advances to a position where each convex portion 273 escapes from the deep groove portion 255, each convex portion 273 slides along the tooth profile of the operating member end face cam 282, and the rotor 270 rotates in the circumferential direction by 1 / 2 of a mountain. As a result, each convex portion 273 and the operating member end face cam 282 are completely engaged with each other. Thereafter, when the operating member 280 retreats toward the lower base end side along the operating direction D7, the rotor 270 retreats in the same direction together with the operating member 280. At this time, since the rotor 270 has rotated by half a peak, each of the projections 273 of the rotor 270 fits into the shallow groove portion 254, not the deep groove portion 255, of the outer cylinder end surface cam 253 of the outer cylinder 250. In the rotor forward state in which each of the projections 273 of the rotor 270 fits into the shallow groove portion 254, the rotor 270 is held in a position advanced toward the upper tip side, compared to the rotor backward state in which the projections 273 of the rotor 270 fit into the deep groove portion 255. Therefore, in the rotor forward state, as shown in FIG. 11, the force transmission member 230 advances to the forward position P8, and as a result, the pressing member 240 moves to the pressing position P6. The rotor forward state is maintained as long as the operating member 280 does not slide.

[0075] In the rotor forward state, when the operating member 280 advances toward the upper tip side along the operating direction D7, the operating member end face cam 282 engages with each of the convex portions 273, and the rotor 270 advances in the same direction together with the operating member 280. When the rotor 270 advances to a position where each of the convex portions 273 escapes from the shallow groove portion 254, each of the convex portions 273 slides along the tooth profile of the operating member end face cam 282, and the rotor 270 rotates in the circumferential direction by 1 / 2 of a peak. As a result, each of the convex portions 273 and the operating member end face cam 282 are completely engaged with each other. Thereafter, when the operating member 280 retreats toward the lower base end side along the operating direction D7, the rotor 270 retreats in the same direction together with the operating member 280. At this time, since the rotor 270 has rotated by half a peak, each of the convex portions 273 of the rotor 270 fits into the deep groove portion 255, not the shallow groove portion 254, of the outer cylinder end face cam 253 of the outer cylinder 250. As a result, the holding mechanism 260 returns to the rotor retracted state, the force transmission member 230 retracts to the retracted position P7, and the pressing member 240 moves to the non-pressing position P5. In this way, the state of the holding mechanism 260 switches between a state in which the force transmission member 230 is held at the retracted position P7 and a state in which the force transmission member 230 is held at the advanced position P8, every time the operating member 280 slides along the operating direction D7.

[0076] A-6. Locking mechanism operation: Next, the operation of the fixing mechanism 200 for the long medical device will be described. In the initial state, as shown in Fig. 10, the holding mechanism 260 is in a rotor retracted state. In this state, the force transmission member 230 is located at the retracted position P7, and the pressing member 240 is not pressed by the force transmission member 230 and is located at the non-pressing position P5. In addition, since the circular tubular body 290 is not elastically deformed, the long medical device such as the guidewire GW inserted into the lumen 213 of the housing 210 (lumen 13 of the main tubular portion 11) is not fixed. In other words, the fixing mechanism 200 is a released state fixing mechanism 200n.

[0077] For example, when the thumb of the operator holding the medical connector 10 is used to press the operating member 280 obliquely upward along the operating direction D7 (hereinafter referred to as the "fixing operation"), the operating member 280 slides obliquely upward along the operating direction D7. Accordingly, the holding mechanism 260 switches from the rotor retreat state to the rotor advance state. In this state, as shown in FIG. 11, the force transmission member 230 is located at the advanced position P8, and the pressing member 240 is pressed by the force transmission member 230 and is located at the pressing position P6. In addition, the circular tubular body 290 is pressed by the pressing member 240 and elastically deforms, thereby fixing the long medical device inserted in the lumen 213 of the housing 210. As a result, the fixing mechanism 200 becomes the fixed state fixing mechanism 200f.

[0078] In addition, when the fixing mechanism 200 is in the fixed state fixing mechanism 200f, for example, when the operator applies an operation of pressing the operating member 280 obliquely upward along the operating direction D7 with the thumb of the operator in the same manner as the fixing operation (hereinafter referred to as the "fixing release operation"), the operating member 280 slides obliquely upward along the operating direction D7. Accordingly, the holding mechanism 260 switches from the rotor forward state to the rotor retreat state. In this state, as shown in FIG. 10, the force transmission member 230 is located at the retreated position P7, the pressing member 240 is not pressed by the force transmission member 230, and returns to the non-pressing position P5 by the elastic restoring force of the circular tubular body 290. In addition, the circular tubular body 290 is not pressed by the pressing member 240 and does not elastically deform, and the fixation of the elongated medical device inserted into the lumen 213 of the housing 210 is released. As a result, the fixing mechanism 200 returns to the released state fixing mechanism 200n.

[0079] In this way, every time a pressing operation (fixing operation or release operation) is performed on the operating member 280, the state of the fixing mechanism 200 is switched to the release state fixing mechanism 200n or the fixed state fixing mechanism 200f.

[0080] A-7. Technical effect of the fastening mechanism: As described above, in the fixing mechanism 200 of this embodiment, each time the operating member 280 slides along the operating direction D7, the holding mechanism 260 switches between a state in which the force transmission member 230 is held at the retracted position P7 and a state in which the force transmission member 230 is held at the advanced position P8. Therefore, while holding the medical connector 10, the operator can easily press the operating member 280 with his / her thumb to fix and release the long medical device, and can grasp the degree of fixation of the long medical device by touch and vision, thereby improving the operability of the fixing mechanism 200.

[0081] The holding mechanism 260 has a cylindrical biasing member 262 that biases the force transmission member 230 in a direction approaching the pressing member 240, and a convex portion 232 to be inserted into a hollow portion of the biasing member 262 is formed on a surface of the force transmission member 230 that faces the biasing member 262. Therefore, according to the fixing mechanism 200 of this embodiment, positioning between the force transmission member 230 and the biasing member 262 can be easily and accurately performed, and the biasing force of the biasing member 262 can be effectively transmitted to the force transmission member 230, thereby improving the accuracy of the operation of the fixing mechanism 200.

[0082] The angle between the direction parallel to the axis of the tubular body 290 (Z-axis direction) and the operation direction D7 of the operation member 280 is 35 degrees or more and 55 degrees or less. Therefore, according to the fixing mechanism 200 of this embodiment, the operator can extremely easily operate the operation member 280 with his / her thumb while holding the medical connector 10, and the operability of the fixing mechanism 200 can be effectively improved.

[0083] The force transmission member 230 is configured to be able to slide relatively to the pressing member 240 along a direction (Z-axis direction) parallel to the axis of the cylindrical body 290 while abutting against the surface of the pressing member 240. Therefore, according to the fixing mechanism 200 of this embodiment, the sliding movement of the force transmission member 230 along the operation direction D7 and the sliding movement of the pressing member 240 along the up-down direction can be efficiently converted, and the operability of the fixing mechanism 200 can be effectively improved.

[0084] B. Second embodiment: B-1. Medical connector configuration: 15 is an explanatory diagram showing the external configuration of the medical connector 10A in the second embodiment. In the following, among the configurations of the medical connector 10A in the second embodiment, the same configurations as those of the medical connector 10 in the first embodiment described above are denoted by the same reference numerals and the description thereof will be omitted as appropriate.

[0085] The medical connector 10A of the second embodiment includes an opening / closing mechanism 300 and a fixing mechanism 200. The configuration of the fixing mechanism 200 included in the medical connector 10A of the second embodiment is similar to the configuration of the fixing mechanism 200 included in the medical connector 10 of the first embodiment. Therefore, hereinafter, the opening / closing mechanism 300 included in the medical connector 10A of the second embodiment will be described.

[0086] B-2. Opening and closing mechanism configuration: Figures 16 to 18 are explanatory diagrams showing the configuration of the opening / closing mechanism 300 in the second embodiment, with Figure 16 showing its longitudinal cross-sectional (YZ cross-sectional) configuration (side configuration for some members), and Figures 17 and 18 showing its cross-sectional perspective views (outer perspective views for some members). Note that Figures 17 and 18 omit illustration of the housing 310. Also, Figures 16 and 17 show the opening / closing mechanism 300 in a state in which the hemostasis valve 320 is closed (hereinafter referred to as the "closed state opening / closing mechanism 300c"), and Figure 18 shows the opening / closing mechanism 300 in a state in which the hemostasis valve 320 is open (hereinafter referred to as the "open state opening / closing mechanism 300o").

[0087] The opening / closing mechanism 300 is a mechanism for opening and closing a hemostatic valve 320 that suppresses the outflow of blood through the lumen 13 of the main tube portion 11 (FIG. 15) of the medical connector 10A. The opening / closing mechanism 300 of this embodiment is a mechanism that switches between a state in which the hemostatic valve 320 is closed and a state in which the hemostatic valve 320 is opened every time an operator applies a pressing operation to the operating member 340. The opening / closing mechanism 300 includes a housing 310, a hemostatic valve 320, a piercing member 330, an operating member 340, a biasing member 306, and a pin 372.

[0088] As shown in FIG. 16, the housing 310 is a tubular member in which a tip-side opening 312 and a base-side opening 311 are formed, and a lumen 313 is formed to communicate between the tip-side opening 312 and the base-side opening 311. More specifically, the housing 310 has a substantially tubular tip-side member 318 and a lid-shaped base-side member 319 that closes the base-side opening of the tip-side member 318, and an opening formed at the tip of the tip-side member 318 constitutes the tip-side opening 312, and a through hole formed in the base-side member 319 constitutes the base-side opening 311. The lumen 313 is a through hole extending in the front-rear direction (Z-axis direction), and constitutes a part of the lumen 13 of the main pipe portion 11 of the medical connector 10A. The housing 310 is formed of, for example, resin. The Z-axis direction is an example of a first direction in the claims.

[0089] A substantially flat partition wall 314 is formed near the center of the interior of the housing 310 in the front-rear direction, and is substantially perpendicular to the front-rear direction. The partition wall 314 is formed with a through-hole 314A that penetrates the partition wall 314 in the front-rear direction and constitutes a part of the lumen 313. The cross-sectional shape of the through-hole 314A is, for example, substantially circular. A groove 317 for accommodating a pin 372 is formed in a lower part of the interior of the housing 310. A pair of upper and lower through-holes 316 for operating members are formed in the base end of the housing 310.

[0090] The hemostasis valve 320 is a member having the same configuration as the hemostasis valve 120 of the first embodiment. The hemostasis valve 320 is fixed at a position distal to the partition wall 314 inside the housing 310. The hemostasis valve 320 is normally in a closed state in which the slit 321 is closed and the valve is closed (FIGS. 16 and 17). When the hemostasis valve 320 is pressed from the base end side, it is in an open state in which a through hole 322 penetrating the hemostasis valve 320 in the front-rear direction is formed (FIG. 18). When the pressing force from the base end side is removed, the hemostasis valve 320 is elastically deformed and returns to the closed state. In this embodiment, a substantially annular boss 328 is disposed between the hemostasis valve 320 and the partition wall 314 of the housing 310.

[0091] 19 and 20 are perspective views showing the external configuration of the penetrating member 330 and the operating member 340 in the second embodiment. The penetrating member 330 is a member in which a through hole 332 extending in the front-rear direction is formed, and is made of, for example, resin. More specifically, the penetrating member 330 has a substantially cylindrical main body 331 in which a tip end portion of the through hole 332 is formed, and a substantially rectangular parallelepiped connecting portion 333 connected to the base end side of the main body 331 and in which a base end portion of the through hole 332 is formed. A recess 334 surrounding the outer periphery of the main body 331 is formed on the tip side surface of the connecting portion 333. In addition, as shown in FIGS. 17, 18, and 20, a movement restricting groove 337 is formed on the lower surface of the connecting portion 333. The movement restricting groove 337 is a so-called heart cam groove, and is a groove that is connected in a heart shape around the circumference.

[0092] Four penetrating member side abutment surfaces 335 that are non-parallel in the front-rear direction (Z-axis direction) and the up-down direction (Y-axis direction) and are parallel in the left-right direction (X-axis direction) are formed on the base end side surface of the connection part 333. More specifically, a pair of penetrating member side first abutment surfaces 335A facing the upper base end side and a pair of penetrating member side second abutment surfaces 335B facing the lower base end side are formed on the base end side surface of the connection part 333. The pair of penetrating member side first abutment surfaces 335A are arranged so as to face each other in the left-right direction with the through hole 332 in between, and similarly, the pair of penetrating member side second abutment surfaces 335B are arranged so as to face each other in the left-right direction with the through hole 332 in between. The inclination angle of each penetrating member side abutment surface 335 with respect to the front-rear direction is, for example, 45 degrees. The up-down direction is an example of the second direction in the claims, and the left-right direction is an example of the fourth direction in the claims.

[0093] 16, the penetrating member 330 is accommodated inside the housing 310 on the proximal side of the hemostatic valve 320. In the penetrating member 330, a through hole 332 communicates with the proximal opening 311 of the housing 310. In addition, the through hole 332 and the lumen 313 of the housing 310 are coaxial with each other.

[0094] The penetrating member 330 housed in the housing 310 is slidable in the front-rear direction with its vertical and horizontal positions relative to the housing 310 being determined. The penetrating member 330 is positioned such that a main body 331 of the penetrating member 330 faces the through hole 314A of the partition wall 314 in the front-rear direction. The penetrating member 330, which is slidable in the front-rear direction, can be positioned at a pressing position P2 where the tip of the main body 331 is inserted into the through hole 314A and presses the hemostatic valve 320 to open the hemostatic valve 320, and at a non-pressing position P1 where the hemostatic valve 320 is not pressed and closed. As shown in FIG. 18, when the penetrating member 330 is positioned at the pressing position P2, the through hole 322 formed in the hemostatic valve 320 and the through hole 332 of the penetrating member 330 communicate with each other. The tip side of the penetrating member 330 can move to a position where the connecting portion 333 abuts against the partition wall 314 of the housing 310, and the base end side of the penetrating member 330 can move to a position where the base end of the penetrating member 330 abuts against the housing 310. The pressing position P2 is an example of a second position in the claims, and the non-pressing position P1 is an example of a first position in the claims.

[0095] The biasing member 306 is a member having the same configuration as the biasing member 106 of the first embodiment, and biases the penetrating member 330 toward the base end. As shown in FIG. 16, the biasing member 306 is accommodated in the housing 310 at a position between the hemostasis valve 320 and the penetrating member 330. A main body 331 of the penetrating member 330 is inserted from the base end side into a hollow portion of the biasing member 306, and a base end portion of the biasing member 306 is accommodated in a recess 334 formed in a connection portion 333 of the penetrating member 330. The penetrating member 330 biased toward the base end by the biasing member 306 is located at a non-pressing position P1 (FIGS. 16 and 17) where it does not press the hemostasis valve 320 when it is not subjected to force from the operating member 340 or the pin 372.

[0096] The pin 372 is a member having the same configuration as the pin 172 of the first embodiment. The pin 372 is attached to the housing 310 in a position extending in the front-rear direction. An end portion on the tip side of the pin 372 is accommodated and fixed in a groove 317 formed in the housing 310. An end portion 373 on the base side of the pin 372 is bent upward and loosely fitted into a movement restricting groove 337 formed in the connection portion 333 of the penetrating member 330. The position of the end portion 373 of the pin 372 in the movement restricting groove 337 changes in accordance with the sliding of the penetrating member 330 in the front-rear direction (Z-axis direction).

[0097] Figures 21 and 22 are explanatory diagrams showing the position of the pin 372 in the operation restriction groove 337 in the second embodiment. Figures 21 and 22 show the underside configurations of the pin 372, the penetrating member 330, and the hemostasis valve 320. Figure 21 shows a closed state opening / closing mechanism 300c in which the penetrating member 330 is in the non-pressing position P1 and the hemostasis valve 320 is closed, and Figure 22 shows an open state opening / closing mechanism 300o in which the penetrating member 330 is in the pressing position P2 and a through hole 322 is formed in the hemostasis valve 320.

[0098] As shown by the outline arrows in Figs. 21 and 22, as the penetrating member 330 slides in the front-rear direction (Z-axis direction), the end 373 of the pin 372 moves relatively in one direction (counterclockwise in the illustrated example) in the movement restricting groove 337 while swinging in the left-right direction (X-axis direction). That is, as shown in Fig. 21, in a first state in which the penetrating member 330 is in the non-pressing position P1, the end 373 is located at the bottom of the heart shape of the movement restricting groove 337 (hereinafter referred to as "closed position portion 337A"). In the first state, the movement of the penetrating member 330 in the front-rear direction is not restricted by the pin 372. When the penetrating member 330 moves from the first state toward the tip side (positive direction of the Z-axis), the end 373 moves relatively to the base end side in the movement restricting groove 337. In a second state in which the penetrating member 330 is displaced from the non-pressing position P1 to the pressing position P2 and further reaches a position on the tip side of the pressing position P2, the end 373 is located at a first apex 337B, which is one of a pair of apexes sandwiching a heart-shaped valley in the movement restricting groove 337. In this state, the movement of the penetrating member 330 toward the base end side is not restricted by the pin 372. In a third state in which the penetrating member 330 moves from the second state to the pressing position P2 so as to return slightly toward the base end side, as shown in FIG. 22, the end 373 of the pin 372 moves relatively toward the tip side within the movement restricting groove 337 and reaches the heart-shaped valley in the movement restricting groove 337 (hereinafter referred to as "open holding portion 337C"). In the third state, the movement of the penetrating member 330 toward the base end side is restricted by the interference between the pin 372 and the movement restricting groove 337, and the penetrating member 330 is maintained at the pressing position P2. In a fourth state in which the penetrating member 330 moves slightly from the third state toward the tip end to a position further toward the tip end than the pressing position P2, the end 373 moves relatively toward the base end within the movement restricting groove 337 and is located at the other of a pair of apexes (hereinafter referred to as the "second apex 337D") that sandwich the heart-shaped valley of the movement restricting groove 337. In the fourth state, the movement of the penetrating member 330 toward the base end is not restricted by the pin 372. When the penetrating member 330 moves from the fourth state toward the base end to the non-pressing position P1, the end 373 moves relatively toward the tip end within the movement restricting groove 337 and returns to the closed position portion 337A of the movement restricting groove 337 (FIG. 21).

[0099] FIG. 23 is an external perspective view showing the configuration of the operating member 340 in the second embodiment. As shown in FIGS. 16 to 20 and 23, the operating member 340 has a first piece 340U and a second piece 340L that face each other in the up-down direction. The second piece 340L is disposed below the first piece 340U. The first piece 340U and the second piece 340L are accommodated in the housing 310 so as to be slidable in a direction (hereinafter referred to as "operation direction D2") that is non-parallel to the front-rear direction (Z-axis direction). In this embodiment, the operation direction D2 is a vertical direction that forms an angle of approximately 90 degrees with the front-rear direction. In this specification, approximately 90 degrees means a range of about 90 degrees plus or minus 5 degrees. The operation direction D2 is an example of a second direction in the claims.

[0100] Each of the first piece 340U and the second piece 340L constituting the operating member 340 has a pair of arms 342 extending in the vertical direction and a connecting portion 341 connecting the ends of the pair of arms 342. As shown in FIG. 16, the connecting portion 341 of each of the first piece 340U and the second piece 340L is exposed from the housing 310 through the operating member through hole 316, and can be pressed by an operator such as a doctor. In addition, an operating member side abutment surface 345 that is non-parallel in the front-rear direction (Z-axis direction) and the up-down direction (Y-axis direction) and parallel in the left-right direction (X-axis direction) is formed at the tip of each arm 342 of the first piece 340U. More specifically, an operating member side first abutment surface 345A facing the lower tip side is formed at the tip of each arm 342 of the first piece 340U. Each of the operation member side first abutment surfaces 345A is a surface that abuts against each of a pair of the penetrating member side first abutment surfaces 335A of the penetrating member 330. In addition, an operation member side second abutment surface 345B facing the upper tip side is formed at the tip of each of the arms 342 of the second piece 340L. Each of the operation member side second abutment surfaces 345B is a surface that abuts against each of the pair of the penetrating member side second abutment surfaces 335B of the penetrating member 330. The inclination angle of each of the operation member side abutment surfaces 345 with respect to the front-rear direction is, for example, 45 degrees.

[0101] 16 and 17, when the penetrating member 330 is in the non-pressing position P1 where it does not press the hemostatic valve 320, the first piece 340U and the second piece 340L constituting the operating member 340 are in a state in which they are separated from each other in the up-down direction (hereinafter referred to as the "separated state"). When the first piece 340U and the second piece 340L slide closer to each other in the up-down direction (i.e., toward the inside of the housing 310), the operating member side first abutment surface 345A of the first piece 340U and the penetrating member side first abutment surface 335A of the penetrating member 330 slide relatively while abutting against each other, and the operating member side second abutment surface 345B of the second piece 340L and the penetrating member side second abutment surface 335B of the penetrating member 330 slide relatively while abutting against each other, thereby pressing the penetrating member 330 toward the distal end and displacing it toward the distal end (FIG. 18). The sliding range of the operating member 340 is set to a range that allows the penetrating member 330 to move from the pressing position P2 to the tip side.

[0102] B-3. ​​Operation of the opening and closing mechanism: Next, the operation of the opening / closing mechanism 300 of the hemostasis valve 320 will be described. In the initial state, as shown in Figs. 16 and 17, the penetrating member 330 is located at a non-pressing position P1 where it does not press the hemostasis valve 320 by receiving the biasing force of the biasing member 306, and the first piece 340U and the second piece 340L constituting the operating member 340 are indirectly receiving the biasing force via the penetrating member 330 and are in a state separated from each other in the up-down direction. In this state, the hemostasis valve 320 is closed, and the opening / closing mechanism 300 becomes a closed-state opening / closing mechanism 300c. At this time, as shown in Fig. 21, the end 373 of the pin 372 is located at the closed position portion 337A in the operation restriction groove 337 of the penetrating member 330.

[0103] For example, when an operation of pressing the first piece 340U and the second piece 340L constituting the operating member 340 toward the inside of the housing 310 is performed with the thumb and index finger of an operator holding the medical connector 10A (hereinafter referred to as a "valve opening operation"), the penetrating member 330 is pressed by the first piece 340U and the second piece 340L and moves toward the tip end. In addition, the end 373 of the pin 372 moves relatively toward the base end within the operation restriction groove 337. When the penetrating member 330 moves toward the tip end by a certain distance or more, the tip end of the main body 331 of the penetrating member 330 presses the hemostatic valve 320 to open the hemostatic valve 320. When the valve opening operation by the operator is released after the penetrating member 330 reaches a position on the distal side of the pressing position P2 and the end 373 of the pin 372 reaches the first apex 337B of the movement restriction groove 337, the penetrating member 330 returns slightly to the proximal side due to the biasing force of the biasing member 306, and the end 373 moves relatively to the distal side within the movement restriction groove 337 to reach the open holding portion 337C, as shown in FIG. 22. In this state, the penetrating member 330 is maintained in the pressing position P2 because the movement of the penetrating member 330 toward the proximal side is restricted by the interference between the pin 372 and the movement restriction groove 337. As a result, the opening / closing mechanism 300 becomes the open state opening / closing mechanism 300o shown in FIG. 18.

[0104] In addition, when the opening / closing mechanism 300 is in the open state opening / closing mechanism 300o, for example, when the operator applies an operation of pressing the first piece 340U and the second piece 340L constituting the operating member 340 toward the inside of the housing 310 in the vertical direction with the thumb and index finger, similar to the valve opening operation (hereinafter referred to as the "valve closing operation"), the penetrating member 330 is pressed by the first piece 340U and the second piece 340L constituting the operating member 340 and moves to a position on the distal side from the pressing position P2. In addition, the end portion 373 of the pin 372 moves relatively from the open holding portion 337C in the operation restricting groove 337 toward the proximal side to reach the second apex 337D. In this state, the movement of the penetrating member 330 toward the proximal side is not restricted by the pin 372. Therefore, when the operator releases the valve closing operation, the penetrating member 330 moves toward the proximal side by the biasing force of the biasing member 306 and returns to the non-pressing position P1. 21, the end 373 of the pin 372 moves relatively toward the tip side within the operation restriction groove 337 to return to the closed position portion 337A. As a result, the hemostasis valve 320 is closed, and the opening / closing mechanism 300 becomes the closed-state opening / closing mechanism 300c shown in FIGS.

[0105] In this way, each time a pressing operation (valve opening operation and valve closing operation) is performed on the first piece 340U and the second piece 340L that constitute the operating member 340, the opening / closing mechanism 300 switches between a closed state opening / closing mechanism 300c and an open state opening / closing mechanism 300o.

[0106] B-4. Technical effect of the opening and closing mechanism: As described above, the opening and closing mechanism 300 of the second embodiment has the same configuration as that of the first embodiment, and therefore, as in the first embodiment, the operator can easily open and close the hemostatic valve 320 with his thumb and / or index finger while holding the medical connector 10A, thereby improving the operability of the opening and closing mechanism 300.

[0107] The biasing member 306 is cylindrical, and a main body 331 is formed on the surface of the penetrating member 330 facing the biasing member 306 as a convex portion to be inserted into the hollow portion of the biasing member 306. Therefore, according to the opening / closing mechanism 300 of the second embodiment, the positioning between the penetrating member 330 and the biasing member 306 can be easily and accurately performed, and the biasing force of the biasing member 306 can be effectively transmitted to the penetrating member 330, thereby improving the accuracy of the operation of the opening / closing mechanism 300.

[0108] The angle between the extension direction (Z-axis direction) of the lumen 313 of the housing 310 and the operation direction D2 of the operation member 340 is approximately 90 degrees. Therefore, according to the opening and closing mechanism 300 of the second embodiment, the operator can extremely easily open and close the hemostatic valve 320 with his / her thumb and / or index finger while holding the medical connector 10A, and the operability of the opening and closing mechanism 300 can be effectively improved.

[0109] The operating member 340 is composed of a first piece 340U and a second piece 340L facing each other in the vertical direction (Y-axis direction), and the first piece 340U and the second piece 340L slide toward each other in the vertical direction to press the penetrating member 330 and displace it toward the tip side. Therefore, according to the opening and closing mechanism 300, the operator can extremely easily and stably open and close the hemostatic valve 320 by pinching the first piece 340U and the second piece 340L with his thumb and index finger while holding the medical connector 10A, and the operability of the opening and closing mechanism 300 can be effectively improved.

[0110] Each of the first piece 340U and the second piece 340L has an operation member side abutment surface 345 that is parallel to the left-right direction (X-axis direction), which is a direction perpendicular to both the extension direction (Z-axis direction) and the up-down direction (Y-axis direction) of the lumen 313 of the housing 310, and is a surface that is non-parallel to both the extension direction and the up-down direction. The penetrating member 330 has a penetrating member side first abutment surface 335A that abuts against the operation member side abutment surface 345 of the first piece 340U, and a penetrating member side second abutment surface 335B that abuts against the operation member side abutment surface 345 of the second piece 340L, which is a surface that is parallel to the left-right direction and is non-parallel to both the extension direction and the up-down direction of the lumen 313. Therefore, according to the opening / closing mechanism 300 of this embodiment, the sliding of the operating member 340 along the up-down direction approximately perpendicular to the extension direction of the lumen 313 of the housing 310 can be efficiently converted into the sliding of the penetrating member 330 in the same extension direction, thereby effectively improving the operability of the opening / closing mechanism 300.

[0111] C. Third embodiment: C-1. Medical connector configuration: 24 is an explanatory diagram showing the configuration of a vertical cross section (YZ cross section) of a medical connector 10B in the third embodiment. In the following, among the configurations of the medical connector 10B, the same configurations as those of the medical connector 10 in the first embodiment described above are denoted by the same reference numerals and the description thereof will be omitted as appropriate.

[0112] The medical connector 10B includes an opening / closing mechanism 100 and a fixing mechanism 200B. The opening / closing mechanism 100 included in the medical connector 10B is similar to the opening / closing mechanism 100 included in the medical connector 10 of the first embodiment, so a description thereof will be omitted, while a fixing mechanism 200B different from the first embodiment will be described below.

[0113] C-2. Fixing mechanism configuration: Fig. 25 and Fig. 26 are explanatory diagrams showing the configuration of the fixing mechanism 200B, showing the configuration of the longitudinal section (YZ section). Fig. 25 shows the fixing mechanism 200B in a state where the fixing of a long medical device such as a guidewire GW is released (released state fixing mechanism 200n), and Fig. 26 shows the fixing mechanism 200B in a state where a long medical device is fixed (fixed state fixing mechanism 200f). Note that side views are shown for some of the members.

[0114] The fixing mechanism 200B of the third embodiment includes a circular tubular body 490 instead of the circular tubular body 290 in the fixing mechanism 200 of the first embodiment. The circular tubular body 490 has a different configuration of a through hole 491 from the circular tubular body 290. That is, the inner diameter of the through hole 491 that passes through the circular tubular body 490 in the longitudinal direction varies depending on the position along the axial direction. More specifically, in the circular tubular body 490, the inner diameter d1a of the through hole 491 in the central portion 490a is smaller than the inner diameter d1b in the tip portion 490b, and is smaller than the inner diameter d1c in the base end portion 490c. In other words, the through hole 491 is larger in diameter at the tip and base ends than at the central portion. Therefore, in the cross section of the fixing mechanism 200B, the area S1a of the central portion 490a of the through hole 491 is smaller than the area S1b of the tip portion 490b, and is smaller than the area S1c of the base end portion 490c. The shape of the through hole 491 in the cross section at each position may be any shape, for example, a circle. The through hole 491 is an example of a first through hole in the claims.

[0115] As in the first embodiment, stoppers 420 are attached to the distal end and proximal end of the circular tubular body 490. Each stopper 420 has a main body 421 having an outer diameter substantially equal to that of the central portion 490a of the circular tubular body 490, a first small diameter portion 423 located on the circular tubular body 490 side with respect to the main body 421 and having an outer diameter smaller than that of the main body 421, and a second small diameter portion 422 located on the opposite side of the circular tubular body 490 with respect to the main body 421 and having an outer diameter smaller than that of the main body 421. The first small diameter portion 423 is inserted into the through hole 491. In addition, the main body 421 is formed with a recess 424 into which a protrusion (not shown) of the housing 210 fits. The stopper 420 is positioned in the front-rear direction with respect to the housing 210 by the fitting of the protrusion and the recess 424, and as a result, the circular tubular body 490 is positioned in the front-rear direction with respect to the housing 210. In other words, the tip-side stopper 420 connects the tip portion 490b to the housing 210, and the base-side stopper 420 connects the base portion 490c to the housing 210. Each stopper 420 has a through hole 425 that communicates with the through hole 491. The shape of the through hole 425 in the cross section of each part may be any shape, for example, a circle. The tip-side stopper 420 is an example of a tip-side connecting part in the claims, and the through hole 425 of the tip-side stopper 420 is an example of a second through hole in the claims. In addition, the base-side stopper 420 is an example of a base-side connecting part in the claims, and the through hole 425 of the base-side stopper 420 is an example of a third through hole in the claims.

[0116] In the first small diameter portion 423 (portion inserted into the through hole 491 of the circular tubular body 490) of the stopper 420 on the tip side, the inner diameter d2 of the through hole 425 is larger than the inner diameter d1a of the through hole 491 in the central portion 490a. Therefore, the area S2 of the through hole 425 in the cross section of the first small diameter portion 423 of the stopper 420 on the tip side is larger than the area S1a of the through hole 491 in the cross section of the central portion 490a of the circular tubular body 490. Similarly, the inner diameter d3 of the through hole 425 in the first small diameter portion 423 (portion inserted into the through hole 491 of the circular tubular body 490) of the stopper 420 on the base side is larger than the inner diameter d1a of the through hole 491 in the central portion 490a of the circular tubular body 490. Therefore, the area S3 of the through hole 425 in the cross section of the first small diameter portion 423 of the base end side stopper 420 is larger than the area S1a of the through hole 491 in the cross section of the central portion 490a of the circular tubular body 490.

[0117] In this embodiment, the outer diameter of the central portion 490a is larger than the outer diameter of the tip portion 490b and is also larger than the outer diameter of the base end portion 490c. Therefore, in the circular tubular body 490 accommodated in the substantially hollow cylindrical circular tubular body accommodating space 215 in the housing 210, the outer peripheral surface of the central portion 490a is in contact with or close to the inner peripheral surface of the circular tubular body accommodating space 215, while the outer peripheral surfaces of the tip portion 490b and the base end portion 490c are separated from the inner peripheral surface of the circular tubular body accommodating space 215.

[0118] The fixing mechanism 200B of the third embodiment includes a pressing member 440 instead of the pressing member 240 of the first embodiment. The pressing member 440 has a shape similar to that of the pressing member 240 of the first embodiment with a portion above the through hole 241 removed. That is, the pressing member 440 is disposed below the central portion 490a of the circular tubular body 490, and in the above-mentioned released state, the upper surface of the pressing member 440 is in contact with or close to the outer circumferential surface of the central portion 490a of the tubular body 490.

[0119] As in the first embodiment, the pressing member 440 is slidable in the up-down direction (Y-axis direction) that is a direction perpendicular to the axial direction (Z-axis direction) of the circular tubular body 490. The pressing member 440 that is slidable in the up-down direction can be located at a non-pressing position P5 where the pressing member 440 does not substantially press the circular tubular body 490, as shown in Fig. 25, and at a pressing position P6 displaced upward from the non-pressing position P5, as shown in Fig. 26. The state where the pressing member 440 does not substantially press the circular tubular body 490 includes a state where the upper surface of the pressing member 440 is in close contact with the outer circumferential surface of the circular tubular body 490, in addition to a state where the upper surface of the pressing member 440 is separated from the outer circumferential surface of the circular tubular body 490.

[0120] On the other hand, when the pressing member 440 is located at the pressing position P6 (FIG. 26), the pressing member 440 presses the central portion 490a of the circular tubular body 490 upward from the outer periphery side, elastically deforming the central portion 490a. In this state, a contact point CP1 which is a lower part of the inner periphery of the central portion 490a, and a contact point CP3 which is an upper part of the inner periphery of the central portion 490a, which are the inner periphery of the through hole 491 of the elastically deformed central portion 490a, are pressed against the long medical device, and the long medical device is fixed to the fixing mechanism 200B by being sandwiched between the two contact points CP1 and CP3, and sliding in the front-rear direction is restricted.

[0121] Here, as described above, the area S2 of the through hole 425 in the cross section of the first small diameter portion 423 of the stopper 420 on the tip side and the area S3 of the through hole 425 in the cross section of the first small diameter portion 423 of the stopper 420 on the base side are larger than the area S1a of the through hole 491 in the cross section of the central portion 490a of the circular tubular body 490. Therefore, even in a state in which the pressing member 440 presses the central portion 490a of the circular tubular body 490 to fix the long medical device, the long medical device is prevented from being pressed against the inner circumferential surface of the stopper 420, and damage to the long medical device can be more effectively prevented. Note that such an effect can be obtained in a solid long medical device such as a guidewire, but is particularly noticeable in a long medical device having a hollow portion such as a catheter.

[0122] C. Variations: The technology disclosed in this specification is not limited to the above-described embodiments, and can be modified in various forms without departing from the spirit of the invention. For example, the following modifications are also possible.

[0123] The configurations of the medical connector 10, the opening / closing mechanisms 100, 300, and the fixing mechanism 200 in the above embodiment are merely examples and can be modified in various ways. For example, in the above first embodiment, the surface of the penetrating member 130 facing the biasing member 106 is formed with the convex portion 139 to be inserted into the hollow portion of the biasing member 106, but the convex portion 139 does not have to be formed. The convex portion 232 of the force transmission member 230 can also be omitted in the same manner.

[0124] In the first embodiment, the biasing member 106 is disposed at a position facing the operating member 140 in the front-rear direction, but the biasing member 106 may be disposed at another position. The position of the biasing member 306 in the second embodiment can also be changed in the same manner.

[0125] In the second embodiment, the operating member 340 has two pieces (first piece 340U and second piece 340L), but the operating member 340 may be composed of a single piece.

[0126] In the above embodiment, a so-called double knock mechanism is used as the holding mechanism 260 that switches between a state in which the force transmission member 230 is held at the retracted position P7 and a state in which the force transmission member 230 is held at the advanced position P8. However, other mechanisms such as a heart cam mechanism may also be used as the holding mechanism 260.

[0127] In the above embodiment, the housing 210 and the stoppers 220, 240 may be an integral member.

[0128] The dimensions and materials of each member in the above embodiment are merely examples and can be modified in various ways.

[0129] In the above embodiment, the medical connector 10 has both the opening and closing mechanism 100 (or the opening and closing mechanism 300) and the fixing mechanism 200, but the medical connector 10 may also have only one of the opening and closing mechanism 100 (or the opening and closing mechanism 300) and the fixing mechanism 200. [Explanation of symbols]

[0130] 10: Medical connector (first embodiment) 11: Main pipe section 12: Branch pipe section 13: Lumen 14: Lumen 20: Rotator 100: Opening and closing mechanism 106: biasing member 110: Housing 111: Proximal opening 112: Distal opening 113: Lumen 114: Septum 114A: through hole 115: guide groove 116: operating member accommodating space 117: Groove 118: Force member accommodating space 119: Convex portion 120: Hemostasis valve 121: Slit 122: Through hole 128: Boss 130: Penetrating member 131: Main body portion 132: Through hole 133: Flange portion 134: Guide protrusion 135: Guide protrusion 136: Upper wall 137:Motion restriction groove 137A: Closed position part 137B: First top part 137C: Open holding part 137D:Second top 139: Convex 140: Operating member 141: Operation reception section 142: Connection section 143: Tip surface 144: Guide groove 145: Recess 172: Pin 173: End 200:Fixing mechanism 210: Housing 211: Proximal opening 212: Distal opening 213: Lumen 214: Evacuation space 215: Circular tubular body accommodation space 216: Component accommodation space 220: Stopper 221: Main body portion 222: Second small diameter portion 223: First small diameter portion 224: Recess 230: Force transmission member 232: Convex portion 233: Surface 234: Upper surface 235: Guide groove 240: Pressing member 241: Through hole 244: Underside 245: Guide protrusion 250: Outer cylinder 253: External cylinder end cam 254: Shallow groove section 255: Deep groove section 260: Retention mechanism 262: Pressing member 270: Rotor 273: Convex part 274: Concave part 280: Operation member 281: sliding contact 282: operation member end surface cam 290: Circular tubular body 291:Through hole 10A: Medical connector (second embodiment) 300: Opening and closing mechanism 306: biasing member 310: Housing 311: Proximal opening 312: Distal opening 313: Lumen 314: Bulkhead 314A:Through hole 316: Through hole for operation member 317: Groove 318: Tip side member 319: Base end member 320: Hemostasis valve 321: Slit 322: Through hole 328: Boss 330: Penetrating member 331: Main body 332: Through hole 333: Connection part 334: Recess 335: Contact surface on penetrating member side 337:Motion control groove 337A: Closed position part 337B: First top part 337C: Open holding part 337D:Second top 340: Operation member 340L: 2nd piece 340U: 1st piece 341: Connecting part 342: Arm part 345: Operation member side contact surface 372: Pin 373: End 10B: Medical connector (third embodiment) 200B:Fixing mechanism 420: Stopper 421: Main body portion 422: Second small diameter portion 423: First small diameter portion 424: Recess 425: Through hole 440: Pressing member 490: Circular tubular body 490a: Central part 490b: Tip part 490c: Base end part 491:Through hole CP1: Contact point CP2: Contact point CP3: Contact points GC: Guiding catheter GW: Guidewire

Claims

1. A hemostasis valve opening and closing mechanism, comprising: a tubular housing having a lumen communicating with a distal end opening and a proximal end opening; a hemostasis valve attached within the housing, which is normally in a closed state and, when pressed from the base end side, is in an open state in which a through hole communicating with the tip end opening of the housing is formed; a penetrating member that is accommodated within the housing on the base end side of the hemostatic valve so as to be slidable along a first direction which is the extension direction of the lumen, the penetrating member having a through hole formed therein that communicates with the base end opening of the housing, the penetrating member being capable of being positioned at a first position at which the hemostatic valve is in the closed state, and at a second position that is a position further toward the tip end side along the first direction than the first position and that presses the hemostatic valve to bring the hemostatic valve into the open state, thereby communicating the through hole of the hemostatic valve with the through hole of the penetrating member; an operating member that is accommodated in the housing and is slidable along a second direction non-parallel to the first direction with a portion exposed from the housing, and that is capable of pressing the penetrating member to displace it toward a tip end by sliding toward an inner side of the housing along the second direction; A biasing member that biases the penetrating member toward the base end side; Equipped with A movement restricting groove is formed on the surface of the penetrating member, the movement restricting groove being continuous all around the circumference, The opening and closing mechanism of the hemostasis valve further includes a pin attached to the housing so that an end of the pin fits loosely into the operation restriction groove, The movement restricting groove is formed with a closed position portion into which the end of the pin fits without restricting movement of the penetrating member toward the tip end side when the penetrating member is in a first state in which the penetrating member is in the first position; a first apex portion into which the end of the pin fits without restricting movement of the penetrating member toward the base end side when the penetrating member is pressed by the operating member from the first state to a position further toward the tip end than the second position when the penetrating member is pressed by the operating member from the first state to a position further toward the tip end than the second position; an open holding portion into which the end of the pin fits so as to restrict movement of the penetrating member toward the base end side when the penetrating member is displaced from the second state to the second position by the biasing force of the biasing member; and a second apex portion into which the end of the pin fits without restricting movement of the penetrating member toward the base end side when the penetrating member is pressed by the operating member from the third state to a position further toward the tip end than the second position when the penetrating member is pressed by the operating member from the third state to a position further toward the tip end than the second position. Hemostasis valve opening and closing mechanism.

2. The hemostasis valve opening and closing mechanism according to claim 1, The biasing member is cylindrical, A protrusion to be inserted into a hollow portion of the urging member is formed on a surface of the penetrating member facing the urging member. Hemostasis valve opening and closing mechanism.

3. The hemostasis valve opening and closing mechanism according to claim 1 or 2, The angle between the first direction and the second direction is greater than or equal to 35 degrees and less than or equal to 55 degrees. Hemostasis valve opening and closing mechanism.

4. The hemostasis valve opening and closing mechanism according to claim 3, The biasing member and the operating member are disposed to face each other in the first direction. Hemostasis valve opening and closing mechanism.

5. The hemostasis valve opening and closing mechanism according to claim 3, The penetrating member has a main body portion in which the through hole is formed, and a flange portion protruding from the main body portion in a third direction perpendicular to the first direction, The operating member is configured to be slidable relative to the penetrating member along the third direction while being in contact with a surface of the base end side of the flange portion. Hemostasis valve opening and closing mechanism.

6. The hemostasis valve opening and closing mechanism according to claim 1 or 2, The angle between the first direction and the second direction is approximately 90 degrees. Hemostasis valve opening and closing mechanism.

7. The hemostasis valve opening and closing mechanism according to claim 6, the operating member is composed of a first piece and a second piece facing each other in the second direction, The first piece and the second piece slide toward each other along the second direction to press the penetrating member and displace it toward the tip side. Hemostasis valve opening and closing mechanism.

8. The hemostasis valve opening and closing mechanism according to claim 7, each of the first piece and the second piece has an operation member side contact surface that is parallel to a fourth direction perpendicular to both the first direction and the second direction and is a surface that is non-parallel to both the first direction and the second direction; the penetrating member has a first penetrating member abutment surface which is parallel to the fourth direction and non-parallel to both the first direction and the second direction and abuts against the operation member abutment surface of the first piece, and a second penetrating member abutment surface which is parallel to the fourth direction and non-parallel to both the first direction and the second direction and abuts against the operation member abutment surface of the second piece, Hemostasis valve opening and closing mechanism.

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