JP2021115231A - Medical connector - Google Patents

Abstract

To provide a medical connector capable of suppressing deterioration in operability of a medical instrument accompanying removal of blood while reliably removing blood from an external surface of the medical instrument by adjusting a state of contact between a wiping member and the medical instrument.SOLUTION: A medical connector 10 includes: a tubular body 20 having a first lumen 23 into which a long-sized medical instrument 110 can be inserted, which extends in a long-axis direction between the tip and the base end; a valve body 50 provided to the first lumen 23, which is made of an elastic material having a second lumen 51 whose inner diameter shrinks by deformation; a wiping member 70 provided to the first lumen 23, which is communicated with the second lumen 51, and includes a third lumen 71, whose inner diameter shrinks by deformation; and a pressing body 80 having a fourth lumen 81 located on a base end side relative to the second lumen 51 and the third lumen 71, which is rotatably connected to the base end part of the body 20, moves in a long-axis direction with respect to the body 20 by rotating, and deforms the valve body 50 and the wiping member 70.SELECTED DRAWING: Figure 2

Description

The present invention relates to a medical connector used when inserting a long medical device such as a guide wire or a catheter into a living body.

Long medical devices such as guide wires and catheters are used for diagnosis and treatment of lesions that occur in blood vessels. These medical devices are inserted and removed into the blood vessel via the Y connector (for example, Patent Document 1).

Blood adheres to the outer surface of the medical device removed from the blood vessel. Blood attached to medical devices becomes a thrombus when left in the air. When a medical device with a blood clot is reinserted into a blood vessel, the blood clot may fall out in the blood vessel and occlude the blood vessel. Therefore, the surgeon needs to remove the blood adhering to the outer surface of the medical device each time the medical device is removed. For example, Patent Document 2 discloses a wiping device in which a sponge (wiping member) is integrally provided at a base end of a Y connector.

Japanese Unexamined Patent Publication No. 7-163666 Japanese Unexamined Patent Publication No. 2018-126270

However, when the wiping device comes into contact with the outer surface of the medical device, the medical device may have the hydrophilic coating provided on the outer surface peeled off, resulting in reduced operability. The wiping device described in Patent Document 2 cannot adjust the contact state between the wiping member and the medical device. Therefore, even when the medical device is inserted, which does not need to remove blood, the medical device and the wiping member come into contact with each other, and the possibility that the coating of the medical device is peeled off increases. Further, when the outer diameter of the medical device inserted into the Y connector is small, the wiping member cannot come into contact with the medical device, so that the medical device may not sufficiently remove blood. On the other hand, if the outer diameter of the medical device inserted into the Y connector is large, the wiping member may come into excessive contact with the medical device, which may cause the coating to peel off or increase the operating resistance of the medical device. ..

The present invention has been made to solve the above-mentioned problems, and by adjusting the contact state between the wiping member and the medical device, blood can be removed while reliably removing blood from the outer surface of the medical device. It is an object of the present invention to provide a medical connector capable of suppressing a decrease in operability of a medical device due to the above.

The medical connector according to the present invention that achieves the above object is a tubular body that extends in the longitudinal direction between the tip and the proximal end and has a first lumen through which a long medical device can be inserted. And a valve body made of an elastic material provided in the first lumen and having a second lumen whose inner diameter is reduced by deformation, and the second lumen provided in the first lumen. A wiping member having a third lumen whose inner diameter is reduced by communication and deformation, and a fourth lumen located closer to the base end side of the second lumen and the third lumen, said to be described above. It is characterized by having a pressing body that is rotatably connected to the base end portion of the main body and that moves in the long axis direction with respect to the main body to deform the valve body and the wiping member. And.

The medical connector configured as described above can adjust the contact state between the wiping member and the medical device by deforming the wiping member by moving the pressing body, so that the wiping member ensures blood from the outer surface of the medical device. It is possible to suppress the deterioration of the operability of the medical device due to the removal of blood while removing the blood.

The hardness of the wiping member may be lower than the hardness of the valve body. Thereby, the wiping member can be brought into contact with the medical device to remove blood from the outer surface of the medical device without the valve body restricting the movement of the medical device.

The minimum inner diameter of the third lumen of the wiping member in the uncompressed state in the major axis direction is the minimum inner diameter of the second lumen of the valve body in the uncompressed state in the major axis direction. May be smaller than. Thereby, the wiping member can be brought into contact with the medical device to remove blood from the outer surface of the medical device without the valve body restricting the movement of the medical device.

The wiping member may be arranged on the proximal end side of the valve body. As a result, when the valve body is closed, blood does not reach the wiping member. Therefore, the adhesion of blood to the wiping member can be reduced, and the deterioration of the wiping performance of the wiping member can be suppressed.

The first lumen has a stepped portion in which the inner diameter increases stepwise toward the proximal end side, and the valve body and the wiping member come into contact with each other side by side in the long axis direction, and the main body is said to have a stepped portion. It may be arranged between the surface of the step portion facing the base end and the surface of the pressing body facing the tip end. As a result, the wiping member and the valve body can be efficiently and continuously deformed only by the operation of moving the pressing body toward the tip end.

The length of the wiping member in the major axis direction may be shorter than the length of the valve body in the major axis direction. As a result, the valve body is gradually compressed by the pressing body that moves in the long axis direction, so that a plurality of compressed states can be continuously taken from the open state to the closed state. Further, the wiping member can be quickly compressed by the pressing body moving in the long axis direction, and the inner diameter of the wiping member can be quickly adjusted to an inner diameter suitable for removing blood on the outer surface of the medical device.

The main body has a male screw on the outer surface of the base end, the pressing body has a female screw on the inner surface of the tip, and the male screw and the female screw may be screwed together. As a result, the operator can rotate the pressing body to move the pressing body in the longitudinal direction with respect to the main body, and deform both the valve body and the wiping member.

It is a perspective view which shows the medical connector which concerns on embodiment. It is sectional drawing which shows the medical connector which concerns on embodiment. It is an exploded perspective view which shows the medical connector which concerns on embodiment. It is sectional drawing explaining the state of a medical connector, (A) shows a wiping state, (B) shows a 1st liquidtight state, (C) shows a 2nd liquidtight state, and (D) shows a closed state. ..

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The dimensions of the drawings may be exaggerated and differ from the actual dimensions for convenience of explanation, and the components having substantially the same functions in the present specification and the drawings have the same reference numerals. The duplicate description is omitted by adding. In the present specification, the side connecting the long medical tube inserted into the blood vessel is referred to as the "tip side", and the side operated by the operator is referred to as the "base end side".

The medical connector 10 according to the present embodiment is a Y connector used by connecting to a proximal end portion of a long medical tube (for example, a catheter).

As shown in FIGS. 1 to 3, the medical connector 10 includes a main body 20, a connecting portion 40, an O-ring 45, a valve body 50, a wiping member 70, and a pressing body 80.

The main body 20 includes a main pipe 21 extending from the tip end to the base end, and a side pipe 22 branching from the main pipe 21. The main 21 is mainly used as a port for inserting the medical device 110. The side tube 22 is mainly used as a port for injecting a contrast medium, a drug, or the like.

The main pipe 21 has a first lumen 23 extending in the longitudinal direction between the tip and the proximal end. Further, the main pipe 21 includes a connection groove 24 provided on the tip end side, a main body screw portion 25 provided on the base end side, and a plurality of first markers 32.

The first lumen 23 is capable of inserting a long medical device 110. The first lumen 23 includes a tip step portion 27 (step portion) whose inner diameter increases stepwise toward the base end side, and a tip accommodating portion 28 on the base end side of the tip step portion 27. The tip accommodating portion 28 can accommodate a part of the valve body 50, the wiping member 70, and the pressing body 80. The tip step portion 27 is in contact with the tip surface of the valve body 50 housed in the tip accommodating portion 28.

The connection groove 24 extends in the circumferential direction on the outer surface of the tip end portion of the main pipe 21. The connection portion 40 is rotatably connected to the connection groove 24.

The main body screw portion 25 is provided on the outer surface of the base end portion of the main pipe 21. A male screw 30 is formed on the main body screw portion 25. The long axis of the main body threaded portion 25 coincides with the long axis of the first lumen 23.

The plurality of first markers 32 are visible and are arranged side by side in the circumferential direction on the outer surface of the main pipe 21. The first marker 32 is used to easily recognize the position of the pressing body 80 with respect to the main body 20.

The side pipe 22 extends from the main pipe 21 in the proximal direction and the radial direction (the direction orthogonal to the major axis). The side tube 22 has a branched lumen 33 that branches from the first lumen 23 and opens at the end in the extending direction.

The connecting portion 40 is a tubular member that is liquid-tightly connected to a hub provided at the base end of a long medical tube. The connecting portion 40 includes a luer taper portion 41, a spiral groove 42, and a connecting rib 43. The luer taper portion 41 enters the hub of the medical tube body, is in close contact with the inner surface of the hub, and can be connected in a liquid-tight manner. Inside the luer taper portion 41, a fifth lumen 44 extending in the long axis direction is formed between the tip end and the base end. The fifth lumen 44 is located on the distal end side of the first lumen 23 of the main body 20 and communicates with the first lumen 23. The spiral groove 42 can be screwed into a protrusion provided on the outer surface of the hub of the medical tube. The spiral groove 42 connects the luer taper portion 41 to the hub of the medical tube and maintains this connected state. The connecting rib 43 is formed on the inner surface of the base end portion of the connecting portion 40, and is slidably accommodated in the connecting groove 24 at the tip end portion of the main pipe 21. As a result, the connecting portion 40 can rotate with respect to the tip end portion of the main pipe 21.

The O-ring 45 is arranged between the inner surface of the connecting portion 40 and the outer surface of the tip portion of the main pipe 21 to maintain a liquidtight state between the connecting portion 40 and the main pipe 21. The O-ring 45 slidably contacts the inner surface of the connecting portion 40 and the outer surface of the main pipe 21. Therefore, even if the O-ring 45 is provided between the connecting portion 40 and the tip portion of the main pipe, the connecting portion 40 is rotatable with respect to the tip portion of the main pipe 21.

The valve body 50 is made of an elastic material and is arranged in the tip accommodating portion 28 of the first lumen 23 of the main body 20. The valve body 50 is a tubular body provided with a second lumen 51 through which a long medical device 110 can be inserted. The second lumen 51 extends in the longitudinal direction between the tip and the proximal end. The second lumen 51 is formed with a constricted portion 52 that projects inward in the radial direction. The diameter of the second lumen 51 is reduced so as to form a curved inner surface from the tip end and the base end toward the constriction portion 52 near the center.

The outer surface of the valve body 50 is in close contact with the inner surface of the tip accommodating portion 28, but is not fixed. The valve body 50 is restricted from moving in the radial direction by the inner surface of the tip accommodating portion 28. The valve body 50 reduces the inner diameter of the second lumen 51 by compressing the tip end surface and the proximal end surface in the major axis direction.

The tip surface of the valve body 50 is arranged so as to be in contact with the base end surface (the surface facing the base end) of the tip step portion 27 or to be located slightly closer to the base end side than the base end surface of the tip step portion 27. .. The base end surface of the valve body 50 is arranged so as to be in contact with the tip end surface of the wipe member 70 or to be located slightly closer to the tip end side than the tip end surface of the wipe member 70. The valve body 50 is preferably not adhered to the main body 20 and the wiping member 70, but is not limited thereto. The second lumen 51 of the valve body 50 communicates with the first lumen 23 on the tip side of the tip step portion 27 of the main body 20. Further, the second lumen 51 of the valve body 50 communicates with the third lumen 71 of the wiping member 70.

In the uncompressed state where the valve body 50 is not compressed in the longitudinal direction, the inner surface of the second lumen 51 of the valve body 50 comes into contact with the outer surface of the medical device 110 inserted into the second lumen 51. It is preferable not to do so. In the uncompressed state, the inner surface of the second lumen 51 of the valve body 50 and the outer surface of the medical device 110 may be slightly in contact with each other. In the uncompressed state, the minimum inner diameter of the valve body 50, that is, the minimum inner diameter of the constricted portion 52 is about 0.8 to 2.0 times, more preferably 1.1 times to 1.5 times the outer diameter of the medical device 110. It is about double. Thereby, even in the open state where the valve body 50 is not deformed at all, it is possible to effectively suppress the leakage of blood or the like from between the medical device 110 and the valve body 50. The length of the valve body 50 in the major axis direction (the length in the direction through which the second lumen 51 penetrates) is not particularly limited, but is reduced to the extent that the inner diameter of the valve body 50 presses and fixes the medical device 110. It is about 2.0 mm to 7.0 mm, more preferably about 5.0 mm to 7.0 mm so as to be possible. The outer diameter of the valve body 50 is about 3.0 mm to 6.0 mm, preferably about 4.0 mm to 6.0 mm. The wall thickness of the valve body 50 in the major axis direction is about 0.5 mm to 1.5 mm, preferably about 0.7 mm to 1.0 mm.

The material forming the valve body 50 is, for example, various rubbers such as silicone rubber, fluororubber, isoprene, and natural rubber, various resins such as polyurethane, polyamide elastomer, polybutadiene, and soft vinyl chloride, or a combination of two or more of them. Things etc. can be mentioned. Silicone rubber is particularly preferable as the material for forming the valve body 50 because the physical properties of the valve body 50 change relatively little, the dimensional accuracy when molded is high, and the durability of holding the inner diameter of the valve body 50 is high. Further, the material forming the valve body 50 is preferably transparent or translucent. As a result, the contact state between the medical device 110 inserted into the valve body 50 and the valve body 50 and the air bubbles remaining in the second lumen 51 of the valve body 50 can be easily confirmed.

The wiping member 70 is a member that comes into contact with the outer surface of the medical device 110 and absorbs and removes blood adhering to the outer surface of the medical device 110. The wiping member 70 is arranged in the tip accommodating portion 28 of the first lumen 23 of the main body 20. The wiping member 70 is a tubular body provided with a third lumen 71 through which a long medical device 110 can be inserted. The third lumen 71 extends in the longitudinal direction between the tip and the proximal end. The wiping member 70 is arranged on the proximal end side of the valve body 20 in the tip accommodating portion 28.

The tip surface of the wiping member 70 is in contact with the proximal end surface of the valve body 50, or is arranged away from the proximal end surface of the valve body 50 on the proximal end side. The base end surface of the wiping member 70 is in contact with the tip end surface (the surface facing the tip end) of the tip end pressing portion 82 of the pressing body 80, or is arranged away from the tip end surface of the tip end pressing portion 82. The outer surface of the wiping member 70 is in close contact with the inner surface of the tip accommodating portion 28, but is not fixed. The wiping member 70 can move in the tip accommodating portion 28 in the long axis direction. Therefore, the wiping member 70 can be pressed by the pressing body 80 and move toward the tip end to press the valve body 50 arranged on the tip end side. The wiping member 70 is restricted from moving in the radial direction by the inner surface of the tip accommodating portion 28. The wiping member 70 reduces the inner diameter of the third lumen 71 by compressing the tip end surface and the proximal end surface in the long axis direction.

The base end surface of the wiping member 70 may be fixed to the tip surface of the tip pressing portion 82 with an adhesive. As a result, the wiping member 70 is less likely to be displaced or twisted and deformed during compression.

The wiping member 70 is arranged at the position of the base end from the valve body 50. As a result, when the valve body 50 is closed, the blood flowing from the tip end to the proximal end of the medical connector 10 does not reach the wiping member 70. As a result, the wiping member 70 can suppress excessive adhesion of blood. The wiping member 70 may be arranged at a position at the tip of the valve body 50 in the long axis direction of the medical connector 10. For example, the position of the valve body 50 and the position of the wiping member 70 of the present embodiment may be interchanged.

The inner diameter of the wiping member 70 (diameter of the third lumen 71) is substantially constant from the tip end to the base end. The shape of the wiping member 70 may be a constricted shape as in the valve body 50. In the uncompressed state in which the wiping member 70 is not compressed in the major axis direction, the inner surface of the third lumen 71 of the wiping member 70 comes into contact with the outer surface of the medical device 110 inserted into the third lumen 71. It is preferable not to do so. In the uncompressed state, the inner surface of the third lumen 71 and the outer surface of the medical device 110 may come into slight contact with each other. The inner diameter of the wiping member 70 in the uncompressed state is 1.0 to 2.0 times, preferably 1.2 to 1.5 times, the outer diameter of the medical device 110 inserted into the third lumen 71. be. When the medical device 110 is a guide wire or a catheter, the inner diameter of the wiping member 70 in the uncompressed state is 0.3 mm to 1.5 mm. The inner diameter of the wiping member 70 in the compressed state in which the wiping member 70 is compressed in the major axis direction is about 0.5 to 1.0 times the outer diameter of the medical device 110 inserted into the third lumen 71. It is preferably about 0.6 to 0.8 times. As an example, if the inner diameter of the wiping member 70 in the compressed state is 0.2 mm, blood adhering to the surface of the guide wire having an outer diameter of 0.009 inches at the tip can be wiped off. In the uncompressed state, the inner diameter of the wiping member 70 is preferably smaller than the inner diameter of the valve body 50. In the uncompressed state, as a combination of the inner diameters of the wiping member 70 and the valve body 50, for example, when the inner diameter of the wiping member 70 is 1.05 times to 1.40 times the outer diameter of the medical device 110, the valve body 50 The inner diameter of the valve body 50 is 1.1 to 1.5 times the outer diameter of the medical device 110, and when the inner diameter of the wiping member 70 is 1.1 to 1.5 times the outer diameter of the medical device 110. The inner diameter of the medical device 110 may be 1.2 to 1.6 times the outer diameter of the medical device 110. The length of the wiping member 70 in the major axis direction is not particularly limited, but is preferably shorter than the length of the valve body 50 in the major axis direction.

The hardness of the wiping member 70 is preferably lower than the hardness of the valve body 50. As a result, the wiping member 70 is more easily deformed than the valve body 50. Therefore, when the wiping member 70 and the valve body 50 are compressed from the proximal direction by the pressing body 80, the wiping member 70 can reduce the inner diameter of the wiping member 70 before the valve body 50. Therefore, it is possible to prevent the second lumen 51 of the valve body 50 from being closed before the third lumen 71 of the wiping member 70 comes into contact with the outer surface of the medical device 110. As an example, the hardness of the valve body 50 can be JIS hardness A: about 28, and the hardness of the wiping member 70 can be JIS hardness A: about 15 to 25 or ASKER C: about 20 to 50. The hardness of the wiping member 70 may be specified by, for example, shore hardness, Brinell hardness, Vickers hardness, Rockwell hardness, durometer hardness, or the like. The hardness of the wiping member 70 may be the same as or higher than the hardness of the valve body 50. In this case, the minimum inner diameter of the uncompressed wipe member 70 is preferably smaller than the minimum inner diameter of the uncompressed valve body 50. If the inner diameter of the uncompressed wiping member 70 is smaller than the inner diameter of the uncompressed valve body 50, even if the wiping member 70 is less likely to reduce the inner diameter than the valve body 50, the wiping member 70 is the valve body 50. Can be wiped before it comes into strong contact with the outer surface of the medical device 110.

The length of the wiping member 70 in the major axis direction is not particularly limited, but is preferably shorter than the length of the valve body 50 in the major axis direction.

The wiping member 70 is made of a material that can absorb blood and has elasticity. Examples of the wiping member 70 include a porous polymer such as a sponge made of a natural resin or a synthetic resin, and a braided body of polymer fibers.

The pressing body 80 is a member that the operator rotates with a finger. The pressing body 80 is rotatable with respect to the main body 20 about a long axis. The pressing body 80 moves in the tip direction by rotating clockwise when viewed from the base end side, and compresses the wiping member 70 and the valve body 50 in the major axis direction. By rotating the pressing body 80 counterclockwise when viewed from the base end side, the pressing body 80 can move in the base end direction and can be separated from the wiping member 70 and the valve body 50.

The pressing body 80 is a tubular body provided with a fourth lumen 81 through which a long medical device 110 can be inserted. Further, the pressing body 80 includes a tip pressing portion 82, a tip screw portion 83, and a rotation operation portion 86.

The fourth lumen 81 extends in the longitudinal direction between the tip and the proximal end. The fourth lumen 81 communicates with the third lumen 71 of the wipe member 70. The inner diameter of the pressing body 80 (diameter of the fourth lumen 81) is about the same as the inner diameter of the main body 20 (diameter of the first lumen 23), and the inner diameter is tapered toward the proximal end side at the proximal end. A widening base end opening 89 is formed.

The tip pressing portion 82 is a cylindrical portion that enters the tip accommodating portion 28 of the first lumen 23 from the base end side of the tip accommodating portion 28. The tip surface of the tip pressing portion 82 comes into contact with the base end surface of the wiping member 70 inside the tip accommodating portion 28, and the wiping member 70 and the valve body 50 arranged on the tip side thereof can be pressed toward the tip. The outer diameter of the tip pressing portion 82 is smaller than the inner diameter of the tip accommodating portion 28 and larger than the inner diameter of the valve body 50 and the wiping member 70 (the diameter of the second lumen 51). In a state where the pressing body 80 does not compress the valve body 50 and the wiping member 70, the tip surface of the tip pressing portion 82 is in contact with the base end surface of the wiping member 70 or slightly slightly from the base end surface of the wiping member 70. It is placed on the base end side.

The tip screw portion 83 has a cylindrical shape surrounding the tip pressing portion 82, and is provided at the tip portion of the pressing body 80. The tip screw portion 83 is screwed into the main body screw portion 25 in which the female screw 88 is formed on the inner surface and the male screw 30 is formed. The long axis of the tip threaded portion 83 coincides with the long axis of the fourth lumen 81.

The rotation operation unit 86 is a portion that the operator rotates with his / her fingers. The rotation operation unit 86 has a cylindrical shape and is arranged on the outer surface of the pressing body 80. The rotation operation unit 86 includes a plurality of ribs 91 extending along the major axis direction, and a second marker 92. The plurality of ribs 91 are provided side by side in the circumferential direction. By providing the rib 91 on the rotation operation unit 86, the operator can easily rotate the rotation operation unit 86 with his or her fingers. The second marker 92 is visible. The position where the second marker 92 is arranged does not have to be the rotation operation unit 86 as long as it is a visible position of the pressing body 80.

When the rotation operation unit 86 rotates clockwise when viewed from the base end side, the tip screw portion 83 rotates. When the tip threaded portion 83 screwed into the body threaded portion 25 rotates clockwise when viewed from the base end side, the pressing body 80 moves toward the tip end.

When the rotation operation unit 86 rotates counterclockwise when viewed from the base end side, the tip screw portion 83 rotates. When the tip screw portion 83 screwed into the main body screw portion 25 rotates counterclockwise when viewed from the base end side, the pressing body 80 moves in the base end direction.

In a state where the pressing body 80 does not compress the valve body 50 and the wiping member 70, the tip surface of the pressing body 80 comes into contact with the base end surface of the wiping member 70 or is closer to the base end surface of the wiping member 70. Placed in. When the pressing body 80 moves toward the tip, the tip surface of the pressing body 80 presses the base end surface of the wiping member 70, and the movement is restricted by the base end surface of the tip step portion 27 and the inner surface of the tip accommodating portion 28. The member 70 and the valve body 50 are compressed.

The material forming the main body 20, the connecting portion 40, and the pressing body 80 is not particularly limited, and examples thereof include thermoplastic resins such as polycarbonate, polyamide, polysulfone, polyarylate, and methacrylate-butylene-styrene copolymer. The materials forming the main body 20, the connecting portion 40, and the pressing body 80 may be the same or different. The material forming the main body 20, the connecting portion 4, and the pressing body 80 is preferably transparent or translucent. Thereby, the state of the medical tool 110, the valve body 50 and the wiping member 70 inserted into the lumen of the medical connector 10 and the air bubbles remaining in the lumen of the medical connector 10 can be easily confirmed.

The lumen of the connecting portion 40 (fifth lumen 44), the lumen of the main body 20 (first lumen 23), the lumen of the valve body 50 (second lumen 51), and the lumen of the wiping member 70. (Third lumen 71), the lumen of the pressing body 80 (fourth lumen 81) communicates in the longitudinal direction so that the long medical device 110 can be inserted. The long axes of each lumen are approximately aligned.

In the present embodiment, the valve body 50, the wiping member 70, and the pressing body 80 are arranged in this order from the tip end to the base end. The valve body 50, the wiping member 70, and the pressing body 80 may be arranged in the order of the wiping member 70, the valve body 50, and the pressing body 80 from the tip end to the base end.

The elongated medical device 110 is, for example, a guide wire, a catheter (microcatheter, balloon catheter) or the like.

Next, the operation of the medical connector 10 according to the present embodiment will be described.

When inserting the medical device 110 into the blood vessel, the operator attaches the medical device 110 to the medical connector 10 in an open state in which the pressing body 80 does not compress the valve body 50 and the wiping member 70, as shown in FIG. It is inserted from the base end opening 89 of. At this time, the medical device 110 does not come into contact with the inner surface of the second lumen 51 of the valve body 50, or slides smoothly even if it comes into contact with the inner surface. Further, the outer surface of the medical device 110 does not come into contact with the inner surface of the third lumen 71 of the wiping member 70, or even if it comes into contact, it slides smoothly. Therefore, the medical connector 10 can reduce the possibility that the coating of the medical device 110 is peeled off.

When removing the medical device 110 inserted into the blood vessel, the operator rotates the pressing body 80 clockwise when viewed from the proximal end side as shown in FIG. 4 (A) to move the pressing body 80. Move toward the tip. The pressing body 80 moves the wiping member 70 in contact with the tip surface of the tip pressing portion 82 toward the tip and presses it against the base end surface of the valve body 50. The tip pressing portion 82 compresses the wiping member 70 and the valve body 50 whose movement is restricted by the base end surface of the tip step portion 27 and the inner surface of the tip accommodating portion 28. At this time, if the wiping member 70 is softer than the valve body 50, the wiping member 70 is compressed before the valve body 50. As a result, the inner diameter of the wiping member 70 becomes smaller, and the medical connector 10 is in the wiping state. In this wiping state, the wiping member 70 can come into contact with the outer surface of the medical device 110 and remove blood adhering to the outer surface of the medical device 110. The pressing body 80 continuously moves in the proximal end direction by rotating counterclockwise when viewed from the proximal end side. Therefore, the operator can adjust the inner diameter of the wiping member 70 by adjusting the position of the pressing body 80 in the long axis direction. Therefore, the surgeon can adjust the contact state between the wiping member 70 and the medical device 110 according to the outer diameter of the medical tool 110 inserted into the medical connector 10. Therefore, the medical connector 10 can reliably remove blood regardless of the outer diameter of the medical device 110. Further, the medical connector 10 can suppress peeling of the coating of the medical device 110 due to excessive contact between the wiping member 70 and the medical device 110, and deterioration of operability due to an increase in operating resistance. In the wiped state, the valve body 50 does not come into contact with the outer surface of the medical device 110, or slides smoothly even if it comes into contact with the outer surface.

When the valve body 50 of the medical connector 10 is closed to keep the medical device 110 liquid-tight, the operator turns the pressing body 80 clockwise when viewed from the proximal end side as shown in FIG. 4 (B). The pressing body 80 is further moved toward the tip end from the wiped state in which the wiping member 70 is compressed by moving the wiping member 70. Since the wipe member 70 is already compressed, further compression of the wipe member 70 is limited. Therefore, the valve body 50 arranged on the tip side of the wiping member 70 is pressed toward the tip by the wiping member 70. The valve body 50 is compressed in a state where movement is restricted by the inner surface of the tip accommodating portion 28 of the main body 20 and the base end surface of the tip step portion 27. As a result, the inner diameter of the valve body 50 becomes smaller, and the medical connector 10 becomes the first liquid-tight state. In the first liquid-tight state, the inner surface of the compressed valve body 50 comes into contact with the outer surface of the medical device 110 to keep the medical device 110 liquid-tight. In the first liquid-tight state, the medical device 110 slides on the inner surface of the valve body 50 and can move in the long axis direction. The pressing body 80 continuously moves in the tip direction by rotating clockwise when viewed from the base end side. Therefore, the operator can adjust the inner diameter of the valve body 50 by adjusting the position of the pressing body 80 in the long axis direction. Therefore, the operator can adjust the contact state between the valve body 50 and the medical device 110 according to the outer diameter of the medical device 110 inserted into the medical connector 10. In the first liquid-tight state, the wiping member 70 is compressed and is in slidable contact with the outer surface of the medical device 110.

As shown in FIG. 4C, when the operator further rotates the pressing body 80 clockwise when viewed from the base end side from the first liquid-tight state, the pressing body 80 further moves toward the tip end. do. As a result, the valve body 50 is further pressed toward the tip by the already compressed wiping member 70. Therefore, the valve body 50 is compressed in the major axis direction from the first liquid-tight state. As a result, the inner diameter of the valve body 50 becomes smaller, and the medical connector 10 becomes a second liquid-tight state. In the second liquid-tight state, the compressed valve body 50 makes strong contact with the outer surface of the medical device 110, keeps the medical device 110 liquid-tight, and restricts the movement of the medical device 110 in the longitudinal direction. do.

When it is desired to completely close the valve body 50 of the medical connector 10, the operator bases the pressing body 80 on the medical connector 10 in a state where the medical device 110 is not inserted, as shown in FIG. 4 (D). Rotate clockwise when viewed from the end side. When the pressing body 80 moves further to the tip than the position in the second liquid-tight state, the pressing body 80 is pressed toward the tip by the already compressed wiping member 70. The pressing body 80 compresses the valve body 50 whose movement is restricted by the inner surface of the tip accommodating portion 28 of the main body 20 and the base end surface of the tip step portion 27. As a result, the second lumen 51 of the valve body 50 is deformed so as to be completely closed, and the medical connector 10 is closed. As a result, it is possible to reliably prevent the blood that has flowed into the lumen of the medical connector 10 from the tip and leaks to the proximal end side.

The length of the wiping member 70 in the major axis direction is preferably shorter than the length of the valve body 50 in the major axis direction. Since the valve body 50 is gradually compressed by the pressing body 80 moving in the long axis direction, a plurality of compressed states can be continuously taken from the open state to the closed state. Further, the wiping member 70 can be quickly compressed by the pressing body 80 moving in the long axis direction, and the inner diameter of the wiping member 70 can be quickly adjusted to an inner diameter suitable for removing blood on the outer surface of the medical device 110. ..

The medical connector 10 can compress the wiping member 70 and the valve body 50 only by rotating the pressing body 80 in one direction. Therefore, the operator can adjust the contact state between the wiping member 70 or the valve body 50 and the medical device 110 with one hand. The surgeon rotates the pressing body 80 to identify which of the plurality of first markers 32 of the main body 20 is close to the second marker 92 of the pressing body 80, whereby the rotation operation unit The position of the 86 with respect to the main body 20 can be identified. Thereby, the operator can easily determine the compressed state of the wiping member 70 and the valve body 50. For example, the second marker 92 of the pressing body 80 identifies which of the plurality of first markers 32 of the main body 20 is close to the second marker 92, so that the open state, the wiped state, and the second marker 92 can be used. It may be arranged so that the liquid-tight state of 1, the second liquid-tight state, and the closed state can be easily discriminated.

As described above, the medical connector 10 according to the present embodiment has a first lumen 23 extending in the long axis direction between the tip end and the base end and through which a long medical device 110 can be inserted. A tubular body 20 provided, a valve body 50 made of an elastic material provided in a first lumen 23 and having a second lumen 51 whose inner diameter is reduced by deformation, and a valve body 50 provided in the first lumen 23. A wiping member 70 having a third lumen 71 that communicates with the second lumen 51 and whose inner diameter is reduced by deformation, and is located on the proximal end side of the second lumen 51 and the third lumen 71. A fourth lumen 81 is provided and is rotatably connected to the base end portion of the main body 20, and by rotating, it moves in the long axis direction with respect to the main body 20 to deform the valve body 50 and the wiping member 70. It has a pressing body 80 and.

Since the medical connector 10 configured as described above can adjust the contact state between the wiping member 70 and the medical device 110 by deforming the wiping member 70 by moving the pressing body 80, the medical tool 110 is formed by the wiping member 70. While reliably removing blood from the outer surface of the medical device 110, it is possible to suppress a decrease in operability of the medical device 110 due to the removal of blood (for example, a decrease in operability due to peeling of the coating of the medical device 110). Further, the medical connector 10 has high operability because the valve body 50 can be deformed and the wiping member 70 can be deformed by operating one pressing body 80.

Further, the hardness of the wiping member 70 is lower than the hardness of the valve body 50. As a result, the wiping member 70 can be brought into contact with the medical device 110 to remove blood from the outer surface of the medical device 110 without the valve body 50 restricting the movement of the medical device 110.

Further, the minimum inner diameter of the third lumen 71 of the wiping member 70 in the uncompressed state in the major axis direction is the minimum inner diameter of the second lumen 51 of the valve body 50 in the uncompressed state in the major axis direction. Smaller than As a result, the wiping member 70 can be brought into contact with the medical device 110 to remove blood from the outer surface of the medical device 110 without the valve body 50 restricting the movement of the medical device 110.

Further, the wiping member 70 is arranged closer to the base end side than the valve body 50. As a result, when the valve body 50 is closed, the blood does not reach the wiping member 70. Therefore, the adhesion of blood to the wiping member 70 can be reduced, and the deterioration of the wiping performance of the wiping member 70 can be suppressed.

Further, the first lumen 23 has a tip step portion 27 whose inner diameter increases stepwise toward the base end side, and the valve body 50 and the wiping member 70 come into contact with each other side by side in the long axis direction to form a main body. It is arranged between the surface of the tip step portion 27 of 20 facing the base end and the surface of the pressing body 80 facing the tip end. As a result, the wiping member 70 and the valve body 50 can be efficiently and continuously deformed only by the operation of moving the pressing body 80 toward the tip end.

Further, the length of the wiping member 70 in the major axis direction may be shorter than the length of the valve body 50 in the major axis direction. As a result, the valve body 50 is gradually compressed by the pressing body 80 that moves in the long axis direction, so that a plurality of compressed states can be continuously taken from the open state to the closed state. Further, the wiping member 70 can be quickly compressed by the pressing body 80 moving in the long axis direction, and the inner diameter of the wiping member 70 can be quickly adjusted to an inner diameter suitable for removing blood on the outer surface of the medical device 110. ..

Further, the main body 20 has a male screw 30 on the outer surface of the base end, the pressing body 80 has a female screw 88 on the inner surface of the tip, and the male screw 30 and the female screw 88 are screwed together. As a result, the operator can rotate the pressing body 80 to move the pressing body 80 in the longitudinal direction with respect to the main body 20 and deform both the valve body 50 and the wiping member 70.

The present invention is not limited to the above-described embodiment, and various modifications can be made by those skilled in the art within the technical idea of the present invention. For example, the medical connector 10 is not limited to the Y connector. For example, the medical connector 10 does not have to have a side pipe branching from the main pipe. Further, the long medical device 110 inserted through the medical connector 10 is not limited to the guide wire and the catheter.

Further, in the above-described embodiment, the main body screw portion 25 has a male screw 30 and the tip screw portion 83 has a female screw 88, but the main body screw portion 25 has a female screw and the tip screw portion 83 has a male screw. May be good.

Further, the structure for connecting the main body screw portion 25 and the pressing body 80 is not limited to the screw structure. For example, the main body screw portion 25 and the pressing body 80 are cams such as end face cams and cylindrical cams formed by a primary node extending in the circumferential direction while tilting with respect to the major axis direction and a slave node in contact with the original node. It may be connected by a structure. By arranging the follower in a specific position on the original node extending in the circumferential direction, the medical connector can be opened, wiped, first liquidtight, second liquidtight, or closed. Can be The original section may extend in the circumferential direction while bending in a zigzag manner. As a result, the subclause is a bent part of the original clause, which makes it difficult to move with respect to the original clause and is stably arranged. Therefore, when the medical connector is in the open state, wiped state, first liquidtight state, second liquidtight state, or closed state, the slave node is placed in a position where it is difficult to move with respect to the original node and is stable. It is preferable to be done.

Further, the medical connector 10 may be arranged on the tip end side of the cassette for operating the medical device 110 in the procedure using the robot catheter system. The medical connector 10 may be rotated by gripping the pressing body 80 with a robot that can be remotely controlled. Further, the medical connector 10 may include a receiving unit for receiving an electric signal for remotely controlling the rotation of the pressing body 80 in the pressing body 80.

10 Medical connector 20 Main body 21 Main pipe 23 First lumen 25 Main body threaded part 27 Tip stepped part (stepped part)
28 Tip accommodating part 40 Connection part 50 Valve body 51 Second lumen 70 Wiping member 71 Third lumen 80 Pressing body 81 Fourth lumen 82 Tip pressing part 83 Tip screw part 86 Rotation operation part 110 Medical equipment

Claims (7)

A tubular body that extends in the longitudinal direction between the tip and the base and has a first lumen through which a long medical device can be inserted.
A valve body made of an elastic material provided in the first lumen and having a second lumen whose inner diameter is reduced by deformation.
A wiping member provided in the first lumen, communicating with the second lumen, and having a third lumen whose inner diameter is reduced by deformation.
The main body is provided with a second lumen and a fourth lumen located on the proximal end side of the third lumen, and is rotatably connected to the proximal end portion of the main body and is rotated to rotate the main body. A medical connector comprising: a pressing body that moves in the longitudinal direction with respect to the valve body and a pressing body that deforms the wiping member. The medical connector according to claim 1, wherein the hardness of the wiping member is lower than the hardness of the valve body. The minimum inner diameter of the third lumen of the wiping member in the uncompressed state in the major axis direction is the minimum inner diameter of the second lumen of the valve body in the uncompressed state in the major axis direction. The medical connector according to claim 1 or 2, characterized in that it is smaller than. The medical connector according to any one of claims 1 to 3, wherein the wiping member is arranged on the proximal end side of the valve body. The first lumen has a stepped portion in which the inner diameter increases stepwise toward the proximal end side.
The valve body and the wiping member are in contact with each other side by side in the long axis direction, and are arranged between a surface of the main body facing the base end of the step portion and a surface facing the tip of the pressing body. The medical connector according to any one of claims 1 to 4. The medical connector according to any one of claims 1 to 5, wherein the length of the wiping member in the major axis direction is shorter than the length of the valve body in the major axis direction. The main body has a male screw on the outer surface of the base end.
The pressing body has a female screw on the inner surface of the tip and has a female screw.
The medical connector according to any one of claims 1 to 6, wherein the male screw and the female screw are screwed together.

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