JP2021115230A - 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 body 20 having a first lumen 23 into which a long-sized medical instrument 110 can be inserted; 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 tubular cap 60 having a third lumen 61 that extends in a long-axis direction; a wiping member 70 provided to the third lumen 61, which includes a fourth lumen 71 whose inner diameter shrinks by deformation; and a pressing body 80 having a fifth lumen 81 communicated with the second lumen 51 and the fourth lumen 71, which is rotatably connected to the base end part of the body 20 and the tip of the cap 60, 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. A tubular 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 a tubular body having a third lumen extending in the long axis direction. The cap, a wiping member provided in the third lumen and having a fourth lumen whose inner diameter is reduced by deformation, and a wiping member provided between the second lumen and the fourth lumen. A second lumen and a fifth lumen communicating with the fourth lumen are provided, and the base end portion of the main body and the tip end portion of the cap are rotatably connected to each other and rotate. It is characterized by having a pressing body that moves in the longitudinal direction with respect to the main body and the cap to deform the valve body and the wiping member.

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 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 cap may be fixed to the base end of the main body by a bridge extending in the long axis direction. As a result, the cap does not fall off from the main body. Therefore, the operator does not need to operate the cap when rotating the pressing body, so that the operator can operate it with one hand.

The bridges may be arranged at least at two positions facing each other in the radial direction with the long axis of the medical connector interposed therebetween. As a result, the medical connector can rotate the pressing body while maintaining good connection between the main body and the cap.

The main body and the pressing body may be connected by a screw structure. 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.

The cap and the pressing body may be connected by a screw structure. As a result, the operator can rotate the pressing body to move the pressing body in the longitudinal direction with respect to the cap, and deform both the valve body and the wiping member.

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.

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 cap 60 (base end member), a wiping member 70, and a pressing body. It includes 80 and a bridge 100.

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 main pipe outer cylinder 26.

The first lumen 23 extends in the longitudinal direction between the tip and the proximal end, and a long medical device 110 can be inserted therethrough. The first lumen 23 includes a tip step portion 27 whose inner diameter increases stepwise toward the proximal end side, and a tip accommodating portion 28 on the proximal end side of the tip step portion 27. The tip accommodating portion 28 can accommodate a part of the valve body 50 and the pressing body 80. The tip accommodating portion 28 is provided with a protruding tip stopper 29 on the inner surface. The tip stopper 29 prevents the pressing body 80 that enters the tip accommodating portion 28 from coming off. 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 has a cylindrical shape surrounding the first lumen 23, and is provided at the base end portion of the main pipe 21. A male screw 30 is formed on the outer surface of 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 main pipe outer cylinder 26 is provided in a cylindrical shape at the base end portion of the main pipe 21 and surrounds the main body screw portion 25. The main pipe outer cylinder 26 includes a fixing hole 31 and a plurality of first markers 32. The fixing hole 31 is a hole into which the bridge 100, which will be described later, is inserted and fixed. The fixing hole 31 is formed on the base end surface of the main pipe outer cylinder 26 at a predetermined depth toward the tip end surface. The fixing holes 31 are provided at two locations on opposite sides of the first lumen 23, for example, but the number of the fixing holes 31 is not limited, and may be one or three or more, for example. The method of fixing the bridge 100 to the main body 20 is not limited. Further, the position where the bridge 100 is fixed does not have to be the main body outer cylinder 26 as long as it is the main body 20. 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 outer cylinder 26. The first marker 32 is used to easily recognize the position of the pressing body 80 with respect to the main body 20. The first marker 32 may be provided on the outer surface of the cap 60.

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 sixth lumen 44 extending in the long axis direction is formed between the tip end and the base end. The sixth 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 21, 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 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 valve body 50 is preferably not adhered to the main body 20, 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. The base end surface of the valve body 50 can come into contact with the tip end surface of the pressing body 80.

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 cap 60 is arranged on the base end side of the main body 20 and is connected to the main body 20. The cap 60 has a third lumen 61 extending in the longitudinal direction between the tip and the proximal end. Further, the cap 60 is provided with a cap screw portion 62 and a cap outer cylinder 63 on the tip end side.

The third lumen 61 is capable of inserting a long medical device 110. The third lumen 61 has a proximal step portion 64 whose inner diameter increases stepwise toward the distal end side, a proximal opening 65 on the proximal side of the proximal step portion 64, and a proximal step portion 64. It is provided with a proximal end accommodating portion 66 on the distal end side. The base end accommodating portion 66 can accommodate a part of the wiping member 70 and the pressing body 80. The base end accommodating portion 66 includes a base end stopper 67 projecting from the inner surface. The base end stopper 67 prevents the pressing body 80 that enters the base end accommodating portion 66 from coming off. The base end step portion 64 can come into contact with the base end surface of the wiping member 70 housed in the base end accommodating portion 66. The proximal end opening 65 has an inner diameter that tapers toward the proximal end side so that the medical device 110 can be easily inserted.

The cap screw portion 62 has a cylindrical shape surrounding the third lumen 61, and is provided at the tip end portion of the cap 60. A male screw 68 is formed on the outer surface of the cap screw portion 62. The long axis of the cap threaded portion 62 coincides with the long axis of the third lumen 61.

The cap outer cylinder 63 is provided in a cylindrical shape at the tip end portion of the cap 60 and surrounds the cap screw portion 62. A columnar bridge 100 extending in the long axis direction toward the tip of the cap outer cylinder 63 is connected to the cap outer cylinder 63. In this embodiment, the bridge 100 is integrally formed with the cap 60. The tip of the bridge 100 is inserted into the fixing hole 31 of the main body 20 and fixed to the main body 20. The bridges 100 are arranged evenly in the circumferential direction about the long axis of the cap 60, but the bridges 100 may not be arranged evenly. The number of bridges 100 is two in this embodiment, but may be one, or may be three or more. In the present embodiment, the bridge 100 is integrally formed with the cap 60, but may be a separate member from the cap 60. Further, the bridge 100 may be integrally formed with the main body 20. Alternatively, the bridge 100 may be a member different from the cap 60 and the main body 20. Further, the cap outer cylinder 63 may not be provided. In this case, the bridge 100 extends from the base end portion of the cap 60 toward the tip end. Further, as long as the rotation of the cap 60 is fixed with respect to the main body 20, the movement of the cap 60 in the axial direction may not be fixed with respect to the main body 20. For example, the bridge 100 may be slidable in the longitudinal direction with respect to the fixing hole 31.

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 proximal end accommodating portion 66 of the third lumen 61 of the cap 60. The wiping member 70 is a tubular body provided with a fourth lumen 71 through which a long medical device 110 can be inserted. The fourth lumen 71 extends in the longitudinal direction between the tip and the proximal end.

The tip surface of the wiping member 70 is in contact with the base end surface of the pressing body 80. The base end surface of the wiping member 70 is arranged so as to be in contact with the tip end surface of the base end step portion 64 of the cap 60 or slightly located on the tip side of the tip end surface of the base end step portion 64 of the cap 60. .. The outer surface of the wiping member 70 is in close contact with the inner surface of the base end accommodating portion 66 of the cap 60, but is not fixed. The wiping member 70 is restricted from moving in the radial direction by the inner surface of the base end accommodating portion 66. The wiping member 70 reduces the inner diameter of the fourth lumen 71 by compressing the tip end surface and the proximal end surface in the long axis direction.

The tip end surface of the wiping member 70 may be fixed to the base end surface of the pressing body 80 with an adhesive. Since the wiping member 70 is fixed to the pressing body 80, the wiping member 70 is less likely to be displaced or twisted and deformed during compression. This effect can also be obtained by fixing the base end surface of the wiping member 70 to the tip end surface of the base end step portion 64 of the cap 60. At this time, the tip surface of the wiping member 70 is in contact with the proximal end surface of the pressing body 80, or is arranged slightly closer to the proximal end surface than the proximal end surface of the pressing body 80. Further, the wiping member 70 does not have to be fixed to the cap 60 and the pressing body 80.

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 fourth 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 fourth lumen 71 of the wiping member 70 comes into contact with the outer surface of the medical device 110 inserted into the fourth lumen 71. It is preferable not to do so. In the uncompressed state, the inner surface of the fourth 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 fourth 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 fourth lumen 71. It is preferably about 0.6 to 0.8 times. As an example, if the minimum 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. 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 length of the wiping member 70 in the major axis direction may be the same as or longer 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 about the long axis with respect to the main body 20 and the cap 60. The pressing body 80 moves in the tip direction by rotating clockwise when viewed from the base end side, and compresses the valve body 50 in the major axis direction. The pressing body 80 moves in the proximal direction by rotating counterclockwise when viewed from the proximal end side, and compresses the wiping member 70 in the major axis direction. The pressing body 80 can easily switch the compressed state of the wiping member 70 and the valve body 50 by changing the rotation direction.

The pressing body 80 is a tubular body provided with a fifth 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, a proximal end pressing portion 84, a proximal end screw portion 85, and a rotation operation portion 86.

The fifth lumen 81 extends in the longitudinal direction between the tip and the proximal end. The fifth lumen 81 communicates with the second lumen 51 of the valve body 50 and the fourth lumen 71 of the wiping member 70. The inner diameter of the pressing body 80 (diameter of the fifth lumen 81) is about the same as the inner diameter of the main body 20 (diameter of the first lumen 23), and is substantially constant from the tip end to the base end.

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 valve body 50 inside the tip accommodating portion 28, and the valve body 50 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 (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 valve body 50 or slightly slightly more than the base end surface of the valve body 50. It is placed on the base end side.

The tip pressing portion 82 is formed with a tip engaging convex portion 87 that can be engaged with the tip stopper 29 of the main body 20 on the outer surface. The outer diameter of the tip engaging convex portion 87 is larger than the inner diameter of the tip stopper 29. Then, the tip engaging convex portion 87 is arranged on the tip side of the tip stopper 29. Therefore, the tip pressing portion 82 can move in the tip accommodating portion 28 in the long axis direction within the range in which the tip engaging convex portion 87 is arranged on the tip side of the tip stopper 29. Therefore, the tip stopper 29 can regulate the tip pressing portion 82 from coming out of the tip accommodating portion 28 in the proximal direction.

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 fifth lumen 81.

The proximal end pressing portion 84 is a cylindrical portion that enters the proximal end accommodating portion 66 of the third lumen 61 from the distal end side of the proximal end accommodating portion 66. The base end surface of the base end pressing portion 84 comes into contact with the tip end surface of the wiping member 70 inside the base end accommodating portion 66, and the wiping member 70 can be pressed toward the base end. The outer diameter of the base end pressing portion 84 is smaller than the inner diameter of the base end accommodating portion 66 and larger than the inner diameter of the wiping member 70 (diameter of the fourth lumen 71). In a state where the pressing body 80 does not compress the valve body 50 and the wiping member 70, the base end surface of the base end pressing portion 84 is in contact with the tip surface of the wiping member 70 or slightly smaller than the tip surface of the wiping member 70. It is placed on the tip side.

On the outer surface of the base end pressing portion 84, a base end engaging convex portion 89 that can be engaged with the base end stopper 67 of the cap 60 is formed. The outer diameter of the base end engaging convex portion 89 is larger than the inner diameter of the base end stopper 67. Then, the proximal end engaging convex portion 89 is arranged on the proximal end side with respect to the proximal end stopper 67. Therefore, within the range in which the proximal end engaging convex portion 89 is arranged closer to the proximal end side than the proximal end stopper 67, the proximal end pressing portion 84 can move in the proximal end accommodating portion 66 in the longitudinal direction. .. Therefore, the proximal end stopper 67 can regulate the proximal end pressing portion 84 from coming out of the proximal end accommodating portion 66 in the distal direction.

The base end screw portion 85 has a cylindrical shape surrounding the base end pressing portion 84, and is provided at the base end portion of the pressing body 80. The base end screw portion 85 is screwed into the cap screw portion 62 in which the female screw 90 is formed on the inner surface and the male screw 68 is formed. The major axis of the proximal end thread 85 coincides with the major axis of the fifth lumen 81.

The rotation operation unit 86 is a portion that the operator rotates with his / her fingers. The rotation operation portion 86 has a cylindrical shape and is arranged on the proximal end side of the distal end screw portion 83 and the distal end pressing portion 82, and is arranged on the distal end side of the proximal end screw portion 85 and the proximal end pressing portion 84. The outer surface of 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 and the base end screw portion 85 rotate. When the tip screw portion 83 screwed into the main body screw portion 25 rotates clockwise when viewed from the base end side, the tip screw portion 83 moves toward the tip end. Further, when the base end screw portion 85 screwed into the cap screw portion 62 rotates clockwise when viewed from the base end side, the base end screw portion 85 moves toward the tip end. As a result, 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 and the base end screw portion 85 rotate. When the tip screw portion 83 screwed into the main body screw portion 25 rotates counterclockwise when viewed from the base end side, the tip screw portion 83 moves in the base end direction. Further, when the base end screw portion 85 screwed into the cap screw portion 62 rotates counterclockwise when viewed from the base end side, the base end screw portion 85 moves in the base end direction. As a result, the pressing body 80 moves toward the proximal end.

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 is in contact with the base end surface of the valve body 50 or is slightly based on the base end surface of the valve body 50. Placed on the edge side. The base end surface of the pressing body 80 is in contact with the tip end surface of the wiping member 70, or is arranged slightly closer to the tip end side than the tip end surface of the wiping member 70. As a result, when the pressing body 80 moves toward the tip end, the tip end surface of the pressing body 80 presses the base end surface of the valve body 50, and the tip end surface of the tip step portion 27 and the inner surface of the tip accommodating portion 28 move. Compress the regulated valve body 50. When the pressing body 80 moves toward the proximal end, the proximal end surface of the pressing body 80 presses the distal end surface of the wiping member 70, and the distal end surface of the proximal end step portion 64 of the cap 60 and the inner surface of the proximal end accommodating portion 66 cause the pressing body 80 to press. The wipe member 70 whose movement is restricted is compressed.

The material forming the main body 20, the connecting portion 40, the cap 60 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, the cap 60, and the pressing body 80 may be the same or different. The material forming the main body 20, the connecting portion 40, the cap 60 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 (sixth 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 pressing body 80. (Fifth lumen 81), the lumen of the wiping member 70 (fourth lumen 71), and the lumen of the cap 60 (third lumen 61) can be inserted with a long medical device 110. It communicates in the long axis direction. The major axes of each lumen in the longitudinal direction are approximately the same.

In the present embodiment, the valve body 50, the pressing body 80, and the wiping member 70 are arranged in this order from the tip end to the base end. The valve body 50, the pressing body 80, and the wiping member 70 may be arranged in the order of the wiping member 70, the pressing body 80, and the valve body 50 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 65 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 fourth 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 cap 60 counterclockwise when viewed from the proximal end side as shown in FIG. 4 (A) to push the pressing body 80. Move toward the base end. The pressing body 80 moves the wiping member 70 fixed to the proximal end surface of the proximal end pressing portion 84 in the proximal end direction and presses it against the distal end surface of the proximal end step portion 64 of the cap 60. The base end pressing portion 84 compresses the wiping member 70 whose movement is restricted by the inner surface of the base end accommodating portion 66 of the cap 60 and the tip surface of the base end step portion 64 of the cap 60. 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 inner surface of the wiping member 70 comes into contact with the outer surface of the medical device 110, and blood adhering to the outer surface of the medical device 110 can be removed. 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 tip pressing portion 82 is separated from the valve body 50, so that the valve body 50 is not compressed.

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). By moving, the pressing body 80 is moved toward the tip end. 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 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. Since the wiping member 70 is not compressed in the first liquid-tight state, unnecessary contact between the wiping member 70 and the outer surface of the medical device 110 can be avoided. Thereby, the medical connector 10 can reduce the possibility that the coating of the medical device 110 is peeled off.

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 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 movement of the pressing body 80 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. The valve body 50 is compressed. 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 flowing into the lumen of the medical connector 10 from the tip end from leaking to the proximal end side.

The length at which the pressing body 80 moves toward the proximal end and the pressing body 80 moves toward the proximal end from the start of compression of the wiping member 70 to the end of compression is such that the pressing body 80 moves toward the distal end. It is preferable that the pressing body 80 is shorter than the length that the pressing body 80 moves toward the tip end from the start of compression of the valve body 50 to the closing state. Further, 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 that moves 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 range in which the pressing body 80 can move toward the tip of the main body 20 may be until the pressing body 80 moves toward the tip and the medical connector 10 is closed. In this case, when the medical connector 10 is closed, the pressing body 80 cannot move further toward the tip of the main body 20. As a result, it is possible to prevent damage to the valve body 50 due to excessive compression and damage to the medical device 110 with which the valve body 50 comes into contact. Further, the range in which the pressing body 80 can move in the proximal direction with respect to the main body 20 may be until the pressing body 80 moves in the proximal direction and the medical connector 10 is in a wiped state. In this case, when the medical connector 10 is in the wiping state, the wiping member 70 cannot move further in the proximal direction with respect to the cap 60. As a result, it is possible to prevent damage to the wiping member 70 due to excessive compression and damage to the medical device 110 with which the wiping member 70 comes into contact.

The medical connector 10 can switch between compression of the wiping member 70 and compression of the valve body 50 by changing the rotation direction of the pressing body 80. Therefore, the surgeon 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 third extending in the longitudinal direction. A tubular cap 60 having a lumen 61, a wiping member 70 having a fourth lumen 71 provided in the third lumen 61 whose inner diameter is reduced by deformation, and a second lumen 51 and a fourth. A fifth lumen 81 is provided between the lumens 71 and communicates with the second lumen 51 and the fourth lumen 71, and is rotated at the base end of the main body 20 and the tip of the cap 60, respectively. It has a pressing body 80 that is movably connected and rotates to move in the longitudinal direction with respect to the main body 20 and the cap 60 to deform the valve body 50 and the wiping member 70.

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 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 cap 60 is fixed to the base end of the main body 20 by a bridge 100 extending in the long axis direction. As a result, the cap 60 does not fall off from the main body 20. Therefore, the operator does not need to operate the cap 60 when rotating the pressing body 80, so that the operator can operate it with one hand.

Further, the bridges 100 are arranged at least at two positions facing each other in the radial direction with the long axis of the medical connector 10 interposed therebetween. As a result, the medical connector 10 can rotate the pressing body 80 while maintaining good connection between the main body 20 and the cap 60.

Further, the main body 20 and the pressing body 80 are connected by a screw structure. 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 screw structure is a structure in which a male screw and a female screw are screwed together.

Further, the cap 60 and the pressing body 80 are connected by a screw structure. 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 cap 60, and deform both the valve body 50 and the wiping member 70.

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. ..

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, the pressing body 80 of the medical connector 10 according to the above-described embodiment is connected to the main body 20 by a screw structure and is connected to the cap 60 by a screw structure, but the main body 20 or the cap 60 is connected. It may be connected to only one of them by a screw structure. Since the main body 20 and the cap 60 are fixed by the bridge 100, the pressing body 80 rotates with respect to the main body 20 and the cap 60 even if it is connected to only one of the main body 20 or the cap 60 by a screw structure. While moving in the long axis direction.

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, in the above-described embodiment, the cap screw portion 62 has a male screw 68 and the base end screw portion 85 has a female screw 90, but the cap screw portion 62 has a female screw and the base end screw portion 85 has a male screw. You may.

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. The medical connector is open, wiped, first liquidtight, second liquidtight, or closed by placing the follower at a specific location on the circumferentially extending original node. 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 cap 60 and the pressing body 80 may also be connected by the cam structure described above.

Further, the medical connector 10 according to the present invention 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 tube 23 First lumen 25 Main body threaded part 26 Main tube outer cylinder 27 Tip stepped part 28 Tip accommodating part 40 Connection part 50 Valve body 51 Second lumen 60 Cap (base end member) )
61 Third lumen 62 Cap threaded part 63 Cap outer cylinder 64 Base end stepped part 66 Base end accommodating part 70 Wiping member 71 Fourth lumen 80 Pressing body 81 Fifth lumen 82 Tip pressing part 83 Tip threaded part 84 Base end pressing part 85 Base end screw part 86 Rotation operation part 100 Bridge 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 tubular cap with a third lumen extending in the longitudinal direction,
A wiping member provided in the third lumen and provided with a fourth lumen whose inner diameter is reduced by deformation.
A fifth lumen provided between the second lumen and the fourth lumen and communicating with the second lumen and the fourth lumen is provided with a proximal end portion of the main body. A pressing body that is rotatably connected to the tip of the cap and that rotates to move in the longitudinal direction with respect to the main body and the cap to deform the valve body and the wiping member. A medical connector characterized by having,. The medical connector according to claim 1, wherein the wiping member is arranged on the proximal end side of the valve body. The medical connector according to claim 1 or 2, wherein the cap is fixed to a base end of the main body by a bridge extending in the long axis direction. The medical connector according to any one of claims 1 to 3, wherein the bridge is arranged at least at two positions facing each other in the radial direction with the long axis of the medical connector interposed therebetween. The medical connector according to any one of claims 1 to 4, wherein the main body and the pressing body are connected by a screw structure. The medical connector according to any one of claims 1 to 5, wherein the cap and the pressing body are connected by a screw structure. The medical connector according to any one of claims 1 to 6, 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.

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