Medical connector

Abstract

To suppress variation in force with which a medical connector fixes a medical device.SOLUTION: A medical connector includes a hollow member, a first movable member, and a second movable member. The hollow member is a member extending in the first direction. The first movable member is disposed on a proximal end side of the hollow member and is movable along a first direction between a first position and a second position on the proximal end side relative to the first position. The first movable member fixes the medical device when located at the first position, and allows movement of the medical device when located at the second position. The second movable member is movable along a second direction crossing the first direction between a third position and a fourth position farther away from the first movable member than the third position. The second movable member moves the first movable member from the second position to the first position when moving from the fourth position to the third position, and moves the first movable member from the first position to the second position when moving from the third position to the fourth position.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The technology disclosed herein relates to medical connectors. [Background technology]

[0002] Medical connectors have the function of fixing medical devices such as guide wires and catheters. Known medical connectors include a hollow member, an elastic body disposed within the hollow member and having a through-hole through which the medical device is inserted, and a screw. When a user rotates the screw to move the screw along the axial direction of the hollow member, the elastic body is pressed against the screw, reducing the inner diameter of the through-hole, thereby fixing the medical device via the elastic body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5249049 Summary of the Invention [Problem to be solved by the invention]

[0004] In the known medical connectors described above, the force for fixing the medical device varies depending on the amount of rotation of the screw, resulting in variations in the force for fixing the medical device. For example, if the amount of rotation is too large, the force for fixing the medical device becomes too large, which may damage the medical device. Conversely, if the amount of rotation is too small, the force for fixing the medical device becomes too small, which may result in the medical device not being fixed securely.

[0005] This specification discloses a technique that can solve the above-mentioned problems. [Means for solving the problem]

[0006] The technology disclosed in this specification can be realized, for example, in the following forms.

[0007] (1) A medical connector disclosed in this specification includes a hollow member, a first movable member, and a second movable member. The hollow member is a member extending in a first direction. A medical device is inserted into the hollow member. The first movable member is disposed on the proximal side of the hollow member. The first movable member is movable along the first direction between a first position and a second position proximal to the first position. The first movable member fixes the medical device when positioned at the first position and allows movement of the medical device when positioned at the second position. The second movable member is movable along a second direction intersecting the first direction between a third position and a fourth position farther from the first movable member than the third position. When the second movable member moves from the fourth position to the third position, it moves the first movable member from the second position to the first position, and when the second movable member moves from the third position to the fourth position, it moves the first movable member from the first position to the second position. With this medical connector, the medical device can be fixed and released by linear movement of the second movable member rather than by rotation, thereby reducing variations in the force used to fix the medical device.

[0008] (2) The medical connector may further include an elastic body having a first through hole formed therein through which the medical device is inserted, and when the first movable member moves from the second position to the first position, the first movable member may press the elastic body in the axial direction to reduce the inner diameter of the first through hole, thereby fixing the medical device via the elastic body. According to this configuration, by fixing the medical device via the elastic body having the first through hole formed therein, the medical device can be fixed reliably while suppressing damage to the medical device.

[0009] (3) In the above medical connector, the first movable member may be formed with a second through-hole that communicates with the first through-hole of the elastic body and through which the medical device is inserted. With this configuration, the medical device can be housed in the second through-hole of the first movable member and reliably fixed by the first movable member and the elastic body.

[0010] (4) The medical connector may further include a holding mechanism that holds the second movable member at the third position and the fourth position. With this configuration, the medical connector can hold a state in which the medical device is fixed and a state in which the medical device is released from fixation.

[0011] (5) In the above medical connector, the holding mechanism may be configured to switch between a state in which the second movable member is held at the third position and a state in which the second movable member is held at the fourth position each time a predetermined operation is performed. With this configuration, it is possible to easily switch between a state in which the medical device is fixed and a state in which the fixation of the medical device is released by a predetermined operation.

[0012] (6) In the above medical connector, the first movable member may have a protruding portion that protrudes in a third direction intersecting the first direction, and the second movable member may have a contact portion that contacts the protruding portion of the first movable member and presses the first movable member from the second position to the first position when the second movable member moves from the fourth position to the third position. With this configuration, when the second movable member moves from the fourth position to the third position, the first movable member can be moved smoothly from the second position to the first position, and the medical device can be more reliably fixed.

[0013] The technology disclosed in this specification can be realized in various forms, for example, in the form of a medical connector, a medical device equipped with a medical connector, etc. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is an explanatory diagram showing the appearance of a medical connector according to an embodiment of the present invention; [Figure 2] FIG. 1 is an explanatory diagram showing a longitudinal section (YZ section) of a medical connector according to an embodiment of the present invention. [Figure 3] FIG. 1 is an explanatory diagram showing a longitudinal section (YZ section) of a medical connector according to an embodiment of the present invention. [Figure 4] FIG. 1 is a perspective view showing the appearance of an elastic body, a horizontally movable member, an obliquely movable member, an operating member, and a holding mechanism. [Figure 5] FIG. 10 is an explanatory diagram showing the configuration of an operating member and a holding mechanism. [Figure 6] FIG. 1 is a perspective view showing the external configuration of an outer cylinder; DETAILED DESCRIPTION OF THE INVENTION

[0015] (Medical connector configuration) FIG. 1 is an explanatory diagram showing the appearance of a medical connector 10 according to this embodiment. FIGS. 2 and 3 are explanatory diagrams showing a longitudinal cross section (YZ cross section) of the medical connector 10 according to this embodiment. In this specification, the positive Z-axis direction is referred to as the distal end side, and the negative Z-axis direction is referred to as the proximal end side. For the medical connector 10 and each of its components, the distal end is referred to as the "distal end," the distal end and its vicinity are referred to as the "distal portion," the proximal end is referred to as the "proximal end," and the proximal end and its vicinity are referred to as the "proximal end portion." The positive Z-axis direction is also referred to as the "forward direction," the negative Z-axis direction is also referred to as the "rearward direction," the positive Y-axis direction is also referred to as the "upward direction," and the negative Y-axis direction is also referred to as the "downward direction." The transverse cross section of the medical connector 10 and each of its components refers to a cross section perpendicular to the longitudinal direction. The longitudinal cross section of the medical connector 10 and each of its components refers to a cross section parallel to the longitudinal central axis. For the medical connector 10 and each of its components, the direction perpendicular to the longitudinal central axis is referred to as the radial direction.

[0016] The medical connector 10 is a Y-connector. The medical connector 10 has a main pipe portion 11 and a branch pipe portion 12. The main pipe portion 11 has a main lumen 13 formed therein, which penetrates the main pipe portion 11 along a central axis Ax parallel to the Z-axis direction. A medical device is inserted into the main lumen 13 from the proximal end side. Below, an example will be described in which a guidewire GW is used as the medical device. The branch pipe portion 12 branches from near the distal end of the main pipe portion 11 and extends obliquely upward toward the proximal end side. The branch pipe portion 12 has a branch lumen 14 formed therein, which communicates with the main lumen 13. A liquid agent, such as a contrast agent or physiological saline, is supplied to the branch lumen 14 from a liquid agent supplier (not shown) connected to the branch pipe portion 12.

[0017] The medical connector 10 is held by, for example, one hand of the operator, and the operator places the four fingers, from the index finger to the little finger, of the one hand over the main pipe portion 11 from above, and positions the thumb of the one hand near the operating member 160, which will be described later.

[0018] A rotator 18 is attached to the distal end of the medical connector 10. A guiding catheter GC is connected to the distal end of the medical connector 10 via the rotator 18. A guidewire GW is inserted into the guiding catheter GC via the medical connector 10.

[0019] The medical connector 10 has the function of fixing the guidewire GW inserted into the medical connector 10. Fig. 3 shows a state in which the medical connector 10 fixes the guidewire GW and restricts movement of the guidewire GW along the axial direction. Fig. 2 shows a state in which the medical connector 10 releases the fixation of the guidewire GW and allows movement of the guidewire GW along the axial direction.

[0020] The medical connector 10 includes a housing 110 , an elastic body 130 , a horizontally movable member 120 , an obliquely movable member 140 , an operating member 160 , and a holding mechanism 170 .

[0021] The housing 110 is a hollow member extending in the Z-axis direction. The housing 110 is formed of, for example, resin. The housing 110 has a distal lumen 113 extending along the central axis Ax. The cross section of the distal lumen 113 is, for example, approximately circular. The distal lumen 113 opens to the distal end of the housing 110. The distal lumen 113 forms part of the main lumen 13 of the main tubular portion 11. The branch tubular portion 12 described above is formed in the housing 110. The housing 110 is an example of a hollow member. The Z-axis direction and the front-to-rear direction are examples of a first direction.

[0022] The housing 110 is formed with a first enlarged diameter hole 115, a second enlarged diameter hole 116, and a component accommodating space 117. The first enlarged diameter hole 115 is located on the proximal side of the distal lumen 113 and communicates with the distal lumen 113. The first enlarged diameter hole 115 extends along the central axis Ax. The cross section of the first enlarged diameter hole 115 is, for example, substantially circular. The inner diameter of the first enlarged diameter hole 115 is larger than the inner diameter of the distal lumen 113. Therefore, a stepped surface 118 facing in the negative direction of the Z axis is formed at the boundary between the first enlarged diameter hole 115 and the distal lumen 113. The second enlarged diameter hole 116 is located on the proximal side of the first enlarged diameter hole 115 and communicates with the first enlarged diameter hole 115. The second enlarged diameter hole 116 extends along the central axis Ax. The inner diameter of second enlarged diameter hole 116 is larger than the inner diameter of first enlarged diameter hole 115. Component accommodating space 117 is located below second enlarged diameter hole 116 and communicates with second enlarged diameter hole 116. Component accommodating space 117 extends obliquely downward toward the base end from the point where it connects with second enlarged diameter hole 116.

[0023] FIG. 4 is a perspective view showing the appearance of the elastic body 130, the horizontally movable member 120, the diagonally movable member 140, the operating member 160, and the holding mechanism 170. As shown in FIGS. 2 to 4, the elastic body 130 is a tubular member having a first through-hole 133 formed therein. The cross section of the first through-hole 133 is, for example, substantially circular. When no external force is applied to the elastic body 130, the inner diameter of the first through-hole 133 is substantially the same as the inner diameter of the distal lumen 113 of the housing 110, and the outer diameter of the elastic body 130 is substantially the same as the inner diameter of the first enlarged diameter hole 115 of the housing 110. The elastic body 130 is made of an elastic material. Examples of materials that can be used to form the elastic body 130 include thermoplastic resins such as elastomers and thermosetting resins such as silicone rubber. The elastic body 130 is housed in the first enlarged diameter hole 115 of the housing 110 in such a position that the central axis of the first through-hole 133 is coaxial with the distal lumen 113 of the housing 110. A stepped surface 118 formed on the housing 110 restricts the movement of the elastic body 130 toward the distal end. When the elastic body 130 is housed in the housing 110, the first through-hole 133 of the elastic body 130 communicates with the distal lumen 113 of the housing 110 and forms part of the main lumen 13 of the main tubular section 11. The outer periphery of the distal end surface of the elastic body 130 may be chamfered.

[0024] The horizontally movable member 120 is a tubular member in which a second through-hole 123 is formed. The horizontally movable member 120 is made of, for example, resin. The horizontally movable member 120 is disposed on the proximal end side of the elastic body 130. The cross section of the second through-hole 123 is, for example, substantially circular. The inner diameter of the second through-hole 123 at the distal end of the horizontally movable member 120 is substantially the same as the inner diameter of the distal lumen 113 of the housing 110. In this embodiment, the second through-hole 123 is expanded in diameter at the proximal end of the horizontally movable member 120. The horizontally movable member 120 is housed across the first expanded diameter hole 115 and the second expanded diameter hole 116 of the housing 110 in an orientation such that the central axis of the second through-hole 123 is coaxial with the distal lumen 113 of the housing 110. When horizontally movable member 120 is accommodated in housing 110, second through-hole 123 of horizontally movable member 120 communicates with first through-hole 133 of elastic body 130 to form part of main lumen 13 of main tubular section 11. A protrusion may be formed on the distal end surface of horizontally movable member 120. Horizontally movable member 120 is an example of a first movable member.

[0025] The horizontally movable member 120 is supported by the housing 110 in a state in which it can slide in the front-rear direction within a range from a first position P1 shown in FIG. 3 to a second position P2 shown in FIG. 2 that is proximal to the first position P1. As shown in FIG. 2, when the horizontally movable member 120 is located at the second position P2, the horizontally movable member 120 does not press against the elastic body 130. In this state, the first through-hole 133 of the elastic body 130 is not reduced in diameter, and the guidewire GW is not fixed. As shown in FIG. 3, when the horizontally movable member 120 is located at the first position P1, which is distal to the second position P2, the horizontally movable member 120 presses against the elastic body 130 from the proximal side. In this state, the elastic body 130 is compressed and deformed, and the first through-hole 133 of the elastic body 130 is reduced in diameter. As a result, the guidewire GW receives force from the inner circumferential surface of the first through-hole 133, and is fixed in a state in which movement in the front-rear direction is restricted. In this way, the horizontally movable member 120 can fix the guide wire GW via the elastic body 130.

[0026] As shown in Fig. 4, a pair of protrusions 126 that protrude radially outward are formed on the outer circumferential surface of the horizontally movable member 120. In this embodiment, the pair of protrusions 126 protrude in the X-axis direction. The pair of protrusions 126 are, for example, substantially cylindrical. The protruding direction of the protrusions 126 is an example of a third direction.

[0027] A hemostatic valve 192 and a cap 194 are attached to the base end of the horizontally movable member 120. The hemostatic valve 192 is a substantially disc-shaped member and is made of an elastic material such as silicone rubber. A slit (not shown) is formed in the hemostatic valve 192, and the guidewire GW is inserted through the slit of the hemostatic valve 192. The hemostatic valve 192 prevents blood from flowing out through the main lumen 13 of the main tubular portion 11. The cap 194 is a substantially disc-shaped member and is made of, for example, resin. The cap 194 is attached to the base end of the horizontally movable member 120 with the hemostatic valve 192 sandwiched between the cap 194 and the base end of the horizontally movable member 120. A through-hole 196 is formed in the cap 194, and the guidewire GW is inserted through the through-hole 196.

[0028] The diagonal movable member 140 is accommodated across the second enlarged diameter hole 116 and the member accommodating space 117 of the housing 110. The diagonal movable member 140 has a substantially flat base 141 and a pair of arms 142 extending obliquely upward from both ends of the base 141 toward the tip. The tip surfaces of the pair of arms 142 are substantially flat and face forward. The diagonal movable member 140 is formed, for example, from resin. The diagonal movable member 140 is an example of a second movable member.

[0029] The diagonal movable member 140 is accommodated in the housing 110 and is slidable in a direction intersecting the front-rear direction (hereinafter referred to as the "diagonal direction Dx") within a range from a third position P3 shown in FIG. 3 to a fourth position P4 shown in FIG. 2, which is farther from the third position P3 than the horizontally movable member 120. The angle between the diagonal direction Dx and the front-rear direction is, for example, 10 degrees or more and 80 degrees or less. The angle may be 20 degrees or more and 70 degrees or less, 30 degrees or more and 60 degrees or less, or 40 degrees or more and 50 degrees or less. As shown in FIG. 2, when the diagonal movable member 140 is located at the fourth position P4, the diagonal movable member 140 does not press the horizontally movable member 120. In this state, the horizontally movable member 120 is pushed toward the proximal end by the elastic force of the elastic body 130 and is located at the second position P2. Therefore, in this state, the elastic body 130 does not fix the guidewire GW. The medical connector 10 may have a member that pushes the horizontally movable member 120 toward the proximal end so that the horizontally movable member 120 is located at the second position P2. As shown in FIG. 3 , when the diagonal movable member 140 moves from the fourth position P4 to the third position P3, the distal end surfaces of the arms 142 of the diagonal movable member 140 come into contact with the protrusions 126 of the horizontally movable member 120, causing the diagonal movable member 140 to push the horizontally movable member 120 toward the distal end. As a result, the horizontally movable member 120 moves from the second position P2 to the first position P1, and the elastic body 130, pressed by the horizontally movable member 120, fixes the guidewire GW. The diagonal direction Dx is an example of a second direction. The arms 142 of the diagonal movable member 140 are an example of a contact portion.

[0030] 5 is an explanatory diagram showing the configuration of the operating member 160 and the holding mechanism 170. The operating member 160 is a substantially cylindrical member extending in the diagonal direction Dx described above. The operating member 160 is supported by an outer tube 150 of the holding mechanism 170, which will be described later, and is slidable along the diagonal direction Dx. The base end of the operating member 160 is exposed from the outer tube 150, and can be pressed by the operator. The operating member 160 is made of, for example, resin.

[0031] The holding mechanism 170 is a so-called double knock mechanism. Each time the operating member 160 slides in the diagonal direction Dx, the holding mechanism 170 switches between a state in which the diagonal movable member 140 is held at a fourth position P4 shown in FIG. 2 and a state in which the diagonal movable member 140 is held at a third position P3 shown in FIG. 3. The holding mechanism 170 has an outer cylinder 150, a rotor 180, and a spring 172. In this embodiment, a part of the operating member 160 also constitutes a part of the holding mechanism 170.

[0032] FIG. 6 is a perspective view showing the external configuration of the outer cylinder 150. The outer cylinder 150 is a substantially cylindrical member and is made of, for example, resin. The outer cylinder 150 is attached to the base end side of the portion of the housing 110 where the member accommodating space 117 is formed, with its axial direction aligned with the diagonal direction Dx. A toothed first cam 153 is formed on the inner peripheral surface of the outer cylinder 150. The first cam 153 is a cam in which shallow groove portions 154 and deep groove portions 155 are formed alternately in the circumferential direction. In this embodiment, the first cam 153 has four shallow groove portions 154 and four deep groove portions 155.

[0033] As shown in Fig. 5, a toothed second cam 162 is formed on the end face of the upper tip of the operating member 160. Four contacts 161, which are approximately rectangular parallelepiped protrusions, are formed on the outer peripheral surface of the upper tip of the operating member 160. The upper tip of the operating member 160 is inserted into the hollow portion of the outer tube 150, and the contacts 161 on the outer peripheral surface of the operating member 160 fit into the deep grooves 155 on the inner peripheral surface of the outer tube 150. This allows the operating member 160 to slide in the axial direction of the outer tube 150, i.e., along the diagonal direction Dx, while being restricted from rotating relative to the outer tube 150.

[0034] The rotor 180 is a substantially disk-shaped member and is made of, for example, resin. Four protrusions 183 are formed on the outer peripheral surface of the rotor 180. Teeth are formed on the surface of the lower base end side of each of the protrusions 183 of the rotor 180. The pitch of the crests of the second cam 162 of the operating member 160 is shifted by approximately half the pitch of the crests of the first cam 153 of the outer cylinder 150, and each of the protrusions 183 of the rotor 180 is configured not to be able to mesh with both the second cam 162 and the first cam 153 at the same time. A recess 184 is formed on the surface of the upper tip side of the rotor 180.

[0035] The spring 172 is a compression coil spring and is made of a metal such as stainless steel. The spring 172 is disposed between the rotor 180 and the diagonal movable member 140. The base end of the spring 172 is inserted into a recess 184 of the rotor 180, and the tip end of the spring 172 is connected to the diagonal movable member 140. The spring 172 biases the diagonal movable member 140 in a direction approaching the horizontally movable member 120.

[0036] In the retracted state in which the convex portions 183 of the rotor 180 are fitted into the deep groove portions 155 of the first cam 153 of the outer cylinder 150, the rotor 180 is positioned at a position retracted downward toward the base end using the deep groove portions 155 as guides. Therefore, in the retracted state, as shown in FIG. 2, the diagonal movable member 140 is positioned at a fourth position P4 retracted downward toward the base end, and as a result, the horizontally movable member 120 is positioned at a second position P2, and fixation of the guidewire GW by the elastic body 130 is released. The retracted state is maintained as long as the operating member 160 does not slide along the diagonal direction Dx.

[0037] In the retreated state described above, when the operating member 160 advances upward toward the distal end along the diagonal direction Dx, the second cam 162 of the operating member 160 engages with the convex portions 183 of the rotor 180, causing the rotor 180 to advance in the same direction together with the operating member 160. When the rotor 180 advances to a position where the convex portions 183 escape from the deep groove portion 155, the convex portions 183 slide along the tooth profile of the second cam 162, causing the rotor 180 to rotate circumferentially by half a peak. As a result, the convex portions 183 and the second cam 162 are fully engaged with each other. Thereafter, when the operating member 160 retreats downward toward the proximal end along the diagonal direction Dx, the rotor 180 retreats in the same direction together with the operating member 160. At this time, because the rotor 180 has rotated by half a peak, the convex portions 183 of the rotor 180 fit into the shallow groove portions 154, not the deep groove portions 155, of the first cam 153 of the outer tube 150. In the advanced state in which the convex portions 183 of the rotor 180 fit into the shallow groove portions 154, the rotor 180 is held in a position advanced upward toward the distal end, compared to the retracted state in which the convex portions 183 of the rotor 180 fit into the deep groove portions 155. Therefore, in the advanced state, as shown in FIG. 3 , the diagonal movable member 140 advances upward to a third position P3, which is advanced toward the distal end. As a result, the horizontally movable member 120 moves from the second position P2 to a first position P1, which is distal to the horizontally movable member 120, and the guidewire GW is fixed by the elastic body 130 pressed by the horizontally movable member 120. The advanced state is maintained as long as the operating member 160 does not slide along the diagonal direction Dx.

[0038] In the forward movement state, when the operating member 160 moves forward toward the upper tip end along the diagonal direction Dx, the second cam 162 of the operating member 160 engages with the respective convex portions 183, causing the rotor 180 to move forward together with the operating member 160 in the same direction. When the rotor 180 moves forward to a position where the respective convex portions 183 escape from the shallow groove portions 154, the respective convex portions 183 slide along the tooth profile of the second cam 162, causing the rotor 180 to rotate circumferentially by half a peak. As a result, the respective convex portions 183 and the second cam 162 are fully engaged with each other. Thereafter, when the operating member 160 moves backward along the diagonal direction Dx toward the lower base end, the rotor 180 also moves backward together with the operating member 160 in the same direction. At this time, because the rotor 180 has rotated by half a ridge, the convex portions 183 of the rotor 180 fit into the deep groove portions 155, not the shallow groove portions 154, of the first cam 153 of the outer tube 150. As a result, the holding mechanism 170 returns to the retracted state, the diagonal movable member 140 retracts to the fourth position P4, the horizontally movable member 120 moves from the first position P1 to the second position P2, and the fixation of the guidewire GW by the elastic body 130 is released. In this way, the holding mechanism 170 switches between a state in which the diagonal movable member 140 is held at the third position P3 and a state in which the diagonal movable member 140 is held at the fourth position P4, each time the operating member 160 slides in the diagonal direction Dx in response to a pressing operation on the operating member 160. As a result, the medical connector 10 switches between a state in which the guidewire GW is fixed and a state in which the guidewire GW is not fixed.

[0039] (Effects of this embodiment) As described above, the medical connector 10 of this embodiment includes a housing 110, a horizontally movable member 120, and a diagonal movable member 140. The housing 110 is a member extending in the front-rear direction. A guidewire GW is inserted into the housing 110. The horizontally movable member 120 is disposed on the proximal side of the housing 110. The horizontally movable member 120 is movable along the front-rear direction between a first position P1 and a second position P2 that is closer to the proximal end than the first position P1. The horizontally movable member 120 fixes the guidewire GW when positioned at the first position P1 and allows movement of the guidewire GW when positioned at the second position P2. The diagonal movable member 140 is movable along a diagonal direction Dx that intersects the front-rear direction between a third position P3 and a fourth position P4 that is farther from the horizontally movable member 120 than the third position P3. When the diagonal movable member 140 moves from the fourth position P4 to the third position P3, it moves the horizontally movable member 120 from the second position P2 to the first position P1, and when it moves from the third position P3 to the fourth position P4, it moves the horizontally movable member 120 from the first position P1 to the second position P2. According to the medical connector 10 of this embodiment, the guidewire GW can be fixed or released by linear movement of the diagonal movable member 140 rather than by rotation, which makes it possible to suppress variations in the force fixing the guidewire GW.

[0040] The medical connector 10 of this embodiment includes an elastic body 130 having a first through hole 133 formed therein, through which the guidewire GW is inserted. When the horizontally movable member 120 moves from the second position P2 to the first position P1, it presses the elastic body 130 in the axial direction to reduce the inner diameter of the first through hole 133, thereby fixing the guidewire GW via the elastic body 130. According to the medical connector 10 of this embodiment, by fixing the guidewire GW via the elastic body 130 having the first through hole 133 formed therein, it is possible to reliably fix the guidewire GW while suppressing damage to the guidewire GW.

[0041] In the medical connector 10 of this embodiment, the horizontally movable member 120 is formed with a second through-hole 123 that communicates with the first through-hole 133 of the elastic body 130 and through which the guidewire GW is inserted. According to the medical connector 10 of this embodiment, the guidewire GW can be housed in the second through-hole 123 of the horizontally movable member 120, and the guidewire GW can be reliably fixed by the horizontally movable member 120 and the elastic body 130.

[0042] The medical connector 10 of this embodiment includes a holding mechanism 170 that holds the diagonal movable member 140 at the third position P3 and the fourth position P4. The medical connector 10 of this embodiment can hold a state in which the guidewire GW is fixed and a state in which the fixation of the guidewire GW is released.

[0043] In the medical connector 10 of this embodiment, the holding mechanism 170 switches between a state in which the diagonal movable member 140 is held at the third position P3 and a state in which the diagonal movable member 140 is held at the fourth position P4 each time a predetermined operation is performed. According to the medical connector 10 of this embodiment, it is possible to easily switch between a state in which the guidewire GW is fixed and a state in which the fixation of the guidewire GW is released by a predetermined operation.

[0044] In the medical connector 10 of this embodiment, the horizontally movable member 120 has a protrusion 126 that protrudes in a direction intersecting the front-to-rear direction, and the diagonal movable member 140 has an arm 142 that contacts the protrusion 126 of the horizontally movable member 120 and presses the horizontally movable member 120 from the second position P2 to the first position P1 when the diagonal movable member 140 moves from the fourth position P4 to the third position P3. According to the medical connector 10 of this embodiment, when the diagonal movable member 140 moves from the fourth position P4 to the third position P3, the horizontally movable member 120 can be smoothly moved from the second position P2 to the first position P1, and the guidewire GW can be more reliably fixed.

[0045] (Variation) 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 thereof, for example, the following modifications are also possible.

[0046] The configuration of the medical connector 10 in the above embodiment is merely an example and can be modified in various ways. For example, a mechanism other than the double knock mechanism (e.g., a heart cam mechanism) may be used as the mechanism for holding the position of the diagonal movable member 140.

[0047] In the medical connector 10 of the above embodiment, at least one of the elastic body 130, the retention mechanism 170, the hemostatic valve 192, and the cap 194 may be omitted.

[0048] The medical connector 10 of the above embodiment may also be adapted to fix a medical device (for example, a catheter) other than the guidewire GW.

[0049] The technology disclosed in this specification is not limited to Y-connectors, but is similarly applicable to medical connectors in general that fasten medical devices.

Claims

1. a hollow member (110) extending in a first direction and into which a medical device is inserted; a first movable member (120) disposed on the proximal side of the hollow member (110) and movable along the first direction between a first position (P1) and a second position (P2) proximal to the first position (P1), the first movable member (120) fixing the medical device when positioned at the first position (P1) and allowing movement of the medical device when positioned at the second position (P2); a second movable member (140) movable along a second direction intersecting the first direction between a third position (P3) and a fourth position (P4) that is farther from the first movable member (120) than the third position (P3), wherein the second movable member (140) moves the first movable member (120) from the second position (P2) to the first position (P1) when moving from the fourth position (P4) to the third position (P3), and moves the first movable member (120) from the first position (P1) to the second position (P2) when moving from the third position (P3) to the fourth position (P4); A medical connector (10).

2. 10. The medical connector (10) of claim 1, further comprising: an elastic body (130) having a first through-hole (133) through which the medical device is inserted; When the first movable member (120) moves from the second position (P2) to the first position (P1), it presses the elastic body (130) in the axial direction to reduce the inner diameter of the first through hole (133), thereby fixing the medical device via the elastic body (130).

3. 3. The medical connector (10) of claim 2, A medical connector (10), wherein the first movable member (120) has a second through hole (123) formed therein, the second through hole (123) communicating with the first through hole (133) of the elastic body (130) and through which the medical device is inserted.

4. The medical connector (10) according to any one of claims 1 to 3, further comprising: A medical connector (10) comprising a holding mechanism (170) that holds the second movable member (140) at the third position (P3) and the fourth position (P4).

5. 5. The medical connector (10) of claim 4, The medical connector (10), wherein the holding mechanism (170) switches between a state in which the second movable member (140) is held at the third position (P3) and a state in which the second movable member (140) is held at the fourth position (P4) each time a predetermined operation is performed.

6. A medical connector (10) according to any one of claims 1 to 5, the first movable member (120) has a protrusion (126) that protrudes in a third direction that intersects with the first direction; The medical connector (10) has a contact portion (142) that contacts the protrusion (126) of the first movable member (120) and presses the first movable member (120) from the second position (P2) toward the first position (P1) when the second movable member (140) moves from the fourth position (P4) to the third position (P3).

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