JP2021115233A - Medical connector - Google Patents

Abstract

To provide a medical connector with high operability 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 31 into which a long-sized medical instrument 110 can be inserted; a valve body 40 in the first lumen 31 having a second lumen 41 whose inner diameter shrinks by deformation; a first pressing body 60 in the first lumen 31 having a third lumen 61 communicated with the second lumen 41; a wiping member 50 in the third lumen 61 having a fourth lumen 51 whose inner diameter shrinks by deformation; and a second pressing body 73 that can move along a long-axis direction toward the wiping member 50 in the third lumen 61. The first pressing body 60 moves toward the tip side along a long-axis direction by being pressed by the second pressing body 73 together with the wiping member 50, and deforms the valve body 40.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 which can suppress a decrease in operability of a medical device due to the above and has high operability.

The medical connector according to the present invention that achieves the above object is a tubular body that extends between the tip and the proximal end along the longitudinal direction and has a first lumen through which a long medical device can be inserted. When,
A valve body provided in the first lumen and having a second lumen whose inner diameter is reduced by deformation, and a valve body.
A first pressing body provided in the first lumen and having a third lumen communicating with the second lumen.
A wiping member provided in the third lumen and having a fourth lumen whose inner diameter is reduced by deformation.
A second pressing body that can move in the third lumen toward the wiping member along the longitudinal direction is provided.
When the first pressing body is pressed by the second pressing body together with the wiping member, the first pressing body moves toward the tip end side along the long axis direction and deforms the valve body.

In the medical connector configured as described above, the contact state between the wiping member and the outer surface of the medical device can be adjusted by moving the second pressing body toward the tip end. As a result, the medical connector can reliably remove blood from the outer surface of the medical device, and can suppress a decrease in operability of the medical device due to the removal of blood. Further, in the medical connector, both the compression of the wiping member and the compression of the valve body can be performed only by moving the second pressing body. Therefore, the surgeon can adjust the contact state between the wiping member or the valve body and the medical device with one hand.

The second pressing body may be formed on a cap rotatably provided at the base end portion of the main body. As a result, the medical connector can be easily operated by the operator because the second pressing body moves with the rotation of the cap.

The first pressing body having a constant outer diameter along the major axis direction may include a pressing body step portion in which the diameter of the third lumen increases stepwise toward the proximal end side. As a result, in the first pressing body, the area of the tip surface of the first pressing body becomes large, and the contact area with the valve body becomes large, so that the valve body can be efficiently compressed. Further, by providing the pressing body step portion on the first pressing body, the wiping member can be arranged so as to be in contact with the inner surface of the pressing body step portion and the pressing body step portion, so that the medical connector can be a second. The wiping member can be efficiently compressed by the pressing body of the above.

The maximum length of the second pressing body entering the third lumen of the first pressing body is shorter than the length from the base end of the first pressing body to the stepped portion of the pressing body. It may be longer than the length from the base end of the first pressing body to the base end of the wiping member. When the second pressing body is moved toward the tip in order to close the valve body of the medical connector and keep the medical device liquid-tight, the wiping member moves toward the tip together with the first pressing body. The wiping member is not subjected to further compression and is maintained in a predetermined compressed state while the valve body is compressed by the first pressing body. Therefore, the medical connector can suppress damage due to excessive deformation of the wiping member. In addition, the medical connector can reduce peeling of the coating of the medical device and an increase in operating resistance due to excessive contact between the wiping member and the medical device.

One of the main body and the cap is provided with a cam surface having an uneven portion along the circumferential direction.
The other body of the main body and the cap may have a contact surface portion that abuts on the cam surface, and the contact surface portion may engage with and disengage from the uneven portion of the cam surface as the cap rotates. .. As a result, the medical connector can give the operator a feeling of operation due to the rotation of the cap. Therefore, the operator can easily switch the compressed state of the wiping member and the valve body by tactile sensation.

The uneven portion may be formed at a position on the cam surface where the contact surface portion is located at least when the base end wall of the cap comes into contact with the base end surface of the first pressing body. .. Thereby, the medical connector can inform the operator that the medical device can be wiped by the wiping member. In addition, the operator can grasp that the compression of the valve body is started when the cap is further rotated.

The uneven portion is formed on the contact surface portion when at least the first pressing body of the cam surface compresses the valve body in the longitudinal direction to hold the medical device in a slidable and liquid-tight state. Is formed at a location where the contact surface portion is located when the first pressing body compresses the valve body in the long axis direction and holds the medical device non-sliding. You may do so. This allows the medical connector to inform the operator of the gradual compression state of the valve body.

It is a front view of the medical connector in this embodiment. It is a partial cross-sectional view of the base end side part of a medical connector. It is an enlarged sectional view of a cam member. It is a partial cross-sectional view (FIG. 4 (a)) of the medical connector into which the medical device was inserted from the state of FIG. 2, and the partial cross-sectional view (FIG. 4 (b)) of the medical connector in the wiped state. It is a partial cross-sectional view (FIG. 5 (a)) of the medical connector in the first liquid-tight state, and the partial cross-sectional view (FIG. 5 (b)) of the medical connector in the second liquid-tight state. A partial cross section of a medical connector in a closed state. It is a partial cross-sectional view of the medical connector which concerns on the modification.

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 tubular medical tube (for example, a catheter).

As shown in FIG. 1, the medical connector 10 includes a main body 20, a connecting portion 21, and a cap 70.

The main body 20 includes a main pipe 22 extending from the tip end to the base end, and a side pipe 23 branching from the main pipe 22. The main 22 is mainly used as a port for inserting the medical device 110. The side tube 23 is mainly used as a port for injecting a contrast medium, a drug, or the like.

The connecting portion 21 is a tubular member that is liquidtightly connected to a hub provided at the base end of a long medical tube.

The cap 70 has marker portions 78 at a plurality of positions in the circumferential direction. The main body 20 has an instruction display unit 38 at one position in the circumferential direction, and can be visually recognized through a transparent cap 70. One of the marker portions 78 overlaps with the instruction display portion 38 according to the position in the circumferential direction of the cap 70. As a result, the operator can easily recognize the position of the cap 70 with respect to the main body 20. Further, a plurality of ribs 79 along the major axis direction are formed on the outer surface of the cap 70. The rib 79 allows the operator to easily rotate the cap 70 with his or her fingers.

As shown in FIG. 2, the main body 20 has a first lumen 31 extending along the longitudinal direction between the tip end and the base end. The first lumen 31 is formed by the wall portion 30 of the main body 20 and is capable of inserting a long medical device 110.

In the first lumen 31, the valve body 40 and the first pressing body 60 are arranged in order from the tip end side to the base end side.

The first lumen 31 includes a main body step portion 36 whose inner diameter increases stepwise toward the base end side, and a main body accommodating portion 37 on the base end side of the main body step portion 36. The main body accommodating portion 37 can accommodate the tip end side portion of the valve body 40 and the first pressing body 60. The main body step portion 36 can come into contact with the tip surface of the valve body 40 housed in the main body accommodating portion 37.

The valve body 40 is made of an elastic material. The valve body 40 is a tubular body provided with a second lumen 41 through which a long medical device 110 can be inserted. The second lumen 41 extends in the longitudinal direction between the tip and the proximal end. The second lumen 41 is formed with a constricted portion 42 protruding inward in the radial direction. The diameter of the second lumen 41 is reduced so that the inner surface is curved from the tip end and the base end toward the constriction portion 42 near the center.

The outer surface of the valve body 40 is in close contact with the inner surface of the main body accommodating portion 37, but is not fixed. As a result, the valve body 40 is restricted from moving in the radial direction by the inner surface of the main body accommodating portion 37. The valve body 40 reduces the inner diameter of the second lumen 41 in a state where the tip end surface and the base end surface are compressed in the major axis direction.

The tip surface of the valve body 40 is arranged so as to be in contact with the base end surface of the main body step portion 36 or slightly located on the base end side of the base end surface of the main body step portion 36. It is preferable that the valve body 40 is not adhered to the main body 20. The second lumen 41 of the valve body 40 communicates with the first lumen 31 on the tip side of the stepped portion 36 of the main body 20. The base end surface of the valve body 40 can come into contact with the tip end surface of the first pressing body 60.

In the uncompressed state, it is preferable that the inner surface of the second lumen 41 of the valve body 40 does not come into contact with the outer surface of the medical device 110. In the uncompressed state, the inner surface of the second lumen 41 of the valve body 40 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 40, that is, the minimum inner diameter of the constricted portion 42 is 0.8 to 2.0 times, more preferably 1.1 to 1.5 times the outer diameter of the medical device 110. Is. Thereby, even in the open state where the valve body 40 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 40. The length of the valve body 40 in the major axis direction (the length in the direction through which the second lumen 41 penetrates) is not particularly limited, but is reduced to the extent that the inner diameter of the valve body 40 presses and fixes the medical device 110. As much as possible, it is 2.0 mm to 7.0 mm, more preferably 5.0 mm to 7.0 mm. The outer diameter of the valve body 40 is 3.0 mm to 6.0 mm, preferably 4.0 mm to 6.0 mm. The wall thickness of the valve body 40 is 0.5 mm to 1.5 mm, preferably 0.7 mm to 1.0 mm.

The material forming the valve body 40 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 40 because there is relatively little change in physical properties, the dimensional accuracy when molded is high, and the durability for holding the inner diameter of the valve body 40 is high. Further, the material forming the valve body 40 is preferably transparent or translucent. As a result, the contact state between the medical device 110 inserted into the valve body 40 and the valve body 40 and the air bubbles remaining in the second lumen 41 of the valve body 40 can be easily confirmed.

The first pressing body 60 has an outer diameter smaller than the inner diameter of the first lumen 31 so that it can be arranged in the first lumen 31 of the main body 20. Further, the first pressing body 60 is formed in a tubular shape having a substantially constant outer diameter along the major axis direction except for the outer peripheral convex portion 68. As a result, the first pressing body 60 forms a third lumen 61 inside through which the long medical device 110 can be inserted. The third lumen 61 extends in the longitudinal direction between the tip and the proximal end. The third lumen 61 communicates with the second lumen 41.

The first pressing body 60 has a pressing body step portion 66 in which the inner diameter (diameter of the third lumen 61) increases stepwise toward the proximal end side, and a pressing body step portion 66 on the proximal end side of the pressing body step portion 66. It is provided with a body accommodating portion 67. The pressing body accommodating portion 67 can accommodate the wiping member 50 and the second pressing body 73. The pressing body step portion 66 can come into contact with the tip surface of the wiping member 50 housed in the pressing body accommodating portion 67.

The outer diameter of the first pressing body 60 is substantially constant from the tip end to the base end. The inner diameter of the portion of the first pressing body 60 on the tip end side of the pressing body step portion 66 is smaller than the inner diameter of the portion on the base end side of the pressing body step portion 66. Therefore, as for the wall thickness of the first pressing body, the portion on the tip end side of the pressing body step portion 66 is thicker than the portion on the proximal end side of the pressing body step portion 66. As a result, the contact area between the tip surface of the first pressing body 60 and the base end surface of the valve body 40 becomes large, so that the first pressing body 60 can efficiently compress the valve body 40.

The wiping member 50 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 50 is a tubular body provided with a fourth lumen 51 through which a long medical device 110 can be inserted. The fourth lumen 51 extends in the longitudinal direction between the tip and the proximal end.

The tip surface of the wiping member 50 is in contact with the pressing body step portion 66 of the first pressing body 60 from the base end side. The base end surface of the wiping member 50 is arranged so as to be in contact with the tip end surface of the second pressing body 73 provided on the cap 70, or to be located slightly closer to the tip end side than the tip end surface of the second pressing body 73. NS. The outer surface of the wiping member 50 is in close contact with the inner surface of the pressing body accommodating portion 67, but is not fixed. As a result, the wiping member 50 is restricted from moving in the radial direction by the inner surface of the pressing body accommodating portion 67. The wiping portion 50 reduces the inner diameter of the fourth lumen 51 in a state where the tip end surface and the base end surface are compressed in the long axis direction.

The tip surface of the wiping member 50 is preferably fixed to the pressing body step portion 66 of the first pressing body 60 with an adhesive. Since the wiping member 50 is fixed to the first pressing body 60, the wiping member 50 is less likely to be displaced or twisted and deformed during compression. The wiping member 50 does not have to be fixed to the first pressing body 60.

The wiping member 50 is arranged at a position on the proximal end side of the valve body 40 in the long axis direction of the medical connector 10. As a result, when the valve body 40 is closed, the blood flowing from the tip end to the proximal end of the medical connector 10 does not reach the wiping member 50. As a result, the wiping member 50 can suppress excessive adhesion of blood.

The inner diameter of the wiping member 50 (diameter of the fourth lumen 51) is substantially constant from the tip end to the base end. The shape of the wiping member 50 may be a constricted shape as in the valve body 40. In the uncompressed state, it is preferable that the inner surface of the fourth lumen 51 of the wiping member 50 does not come into contact with the outer surface of the medical device 110. In the uncompressed state, the inner surface of the fourth lumen 51 of the wiping member 50 and the outer surface of the medical device 110 may be slightly in contact with each other. The inner diameter of the wiping member 50 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 51. be. When the medical device 110 is a guide wire or a catheter, the inner diameter of the wiping member 50 in the uncompressed state is 0.3 mm to 2.0 mm, preferably 0.4 mm to 1.5 mm. The inner diameter of the wiping member 50 in the compressed state is 0.5 to 1.0 times, preferably 0.6 to 0.8 times, the outer diameter of the medical device 110 inserted into the fourth lumen 51. be. When the medical device 110 is a guide wire or a catheter, the minimum inner diameter of the wiping member 50 in the compressed state is 0.1 mm to 1.0 mm, preferably 0.2 mm to 0.7 mm. The length of the wiping member 50 in the major axis direction is not particularly limited, but is preferably shorter than the length of the valve body 40 in the major axis direction. As a result, the valve body 40 is gradually compressed by the first pressing body 60 that moves in the long axis direction, so that a plurality of compressed states can be stepwise taken from the open state to the closed state. Further, the wiping member 50 is quickly compressed by the second pressing body 73 that moves in the long axis direction, and the inner diameter of the wiping member 50 is quickly adjusted to an inner diameter suitable for removing blood on the outer surface of the medical device 110. be able to. The length of the wiping member 50 in the non-compressed state in the major axis direction is, for example, 1.0 mm to 7.0 mm, preferably 2.0 to 5.0 mm.

The wiping member 50 is made of a material that can absorb blood and has elasticity. Examples of the wiping member 50 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 cap 70 is arranged so as to cover the base end portion of the main body 20, and is rotatable with respect to the main body 20. The cap 70 has a base end wall 71 and a peripheral wall 75. The base end wall 71 is formed with an opening 72 through which a long medical device 110 can be inserted. The opening 72 has a tapered surface 72a so that the medical device 110 can be easily inserted.

The base end wall 71 of the cap 70 has a tubular second pressing body 73 extending toward the tip end side. The second pressing body 73 compresses the wiping member 50 in the major axis direction by moving toward the tip end. Further, the second pressing body 73 moves the first pressing body 60 toward the tip by moving toward the tip, and compresses the valve body 40 in the major axis direction.

The second pressing body 73 has an outer diameter smaller than the inner diameter of the third lumen 61 so that the second pressing body 73 can be arranged in the third lumen 61 of the first pressing body 60. Further, the second pressing body 73 is formed in a tubular shape having a substantially constant outer diameter along the major axis direction except for the convex portion 76. As a result, the second pressing body 73 forms a fifth lumen 74 inside through which the long medical device 110 can be inserted. The first pressing body 60 and the second pressing body 73 are arranged in the third lumen 61 of the first pressing body 60 in a state where the valve body 40 and the wiping member 50 are not compressed, respectively. The tip surface of the pressing body 73 of 2 is arranged so as to abut on the proximal end surface of the wiping member 50 or to be located slightly closer to the proximal end surface than the proximal end surface of the wiping member 50.

The maximum length of entry into the third lumen 61 of the second pressing body 73 is shorter than the length from the base end of the first pressing body 60 to the stepped portion 66 of the pressing body, and the base of the first pressing body 60. It is longer than the length from the end to the base end of the wiping member 50. Therefore, when the second pressing body 73 moves toward the tip end, the second pressing body 73 moves to the tip end of the second pressing body 73 arranged in the third lumen 61 of the first pressing body 60. The surface abuts on the base end surface of the wiping member 50, and the wiping member 50 whose movement is restricted by the pressing body step portion 66 of the first pressing body 60 and the inner surface of the first pressing body 60 is compressed.

When the second pressing body 73 further moves toward the tip end, the base end wall 71 of the cap 70 comes into contact with the base end surface of the first pressing body 60, and the first pressing body 60 is moved toward the tip end direction. The first pressing body 60 compresses the valve body 40 whose movement is restricted by the stepped portion 36 of the main body 20 and the inner surface of the main body 20. Since the wiping member 50 is fixed to the first pressing body 60, it moves toward the tip end together with the first pressing body 60. Therefore, the wiping member 50 is not further compressed while the valve body 40 is compressed by the first pressing body 60, and is maintained in a predetermined compressed state.

The main body 20 has a main body side convex portion 35 on the inner surface. The first pressing body 60 has an outer peripheral convex portion 68 on the outer surface. It is preferable that the main body side convex portion 35 and the outer peripheral convex portion 68 are provided over the entire circumference in the circumferential direction. It is preferable that the tip surface of the main body side convex portion 35 is perpendicular to the major axis direction, and the proximal end surface of the main body side convex portion 35 is inclined from the proximal end toward the distal end. As a result, when assembling the medical connector 10, the first pressing body 60 can be easily inserted into the first lumen 31. The outer peripheral convex portion 68 comes into contact with the main body side convex portion 35 from the tip end side, and can prevent the first pressing body 60 from coming off to the base end side of the main body 20.

The first pressing body 60 has an inner peripheral convex portion 69 on the inner surface. The second pressing body 73 has a convex portion 76 on the outer surface. It is preferable that the inner peripheral convex portion 69 and the convex portion 76 are provided over the entire circumference in the circumferential direction. It is preferable that the tip surface of the inner peripheral convex portion 69 is perpendicular to the major axis direction, and the proximal end surface of the inner peripheral convex portion 69 is inclined from the proximal end toward the distal end. This makes it easier to insert the second pressing body 73 into the third lumen 61 when assembling the medical connector 10. The convex portion 76 comes into contact with the inner peripheral convex portion 69 from the tip end side, and can prevent the second pressing body 73 from coming off to the proximal end side of the first pressing body 60.

The cap 70 and the main body 20 have a gear mechanism that gives the operator a feeling of operation accompanying the rotation of the cap 70 and temporarily stops the cap 70. The cap 70 has a cam member 80 at the tip end portion. The main body 20 has a contact surface portion 33 on the outer surface. The contact surface portions 33 are provided at two locations in the circumferential direction. The cam member 80 has a cam surface 81 that faces the proximal end side. Two cam surfaces 81 are provided in the circumferential direction of the cam member 80 in the same shape, and each of them abuts on the contact surface portion 33. The contact surface portion 33 comes into contact with the cam surface 81 from the base end side.

As shown in FIG. 3, the cam surface 81 has a plurality of uneven portions. In a state where the first pressing body 60 and the second pressing body 73 do not compress the valve body 40 and the wiping member 50, respectively, the portion of the cam surface 81 that comes into contact with the contact surface portion 33 is the neutral surface portion 81a. be. The cam surface 81 is inclined toward the base end side in the direction in which the contact surface portion 33 comes into contact when the cam member 80 is rotated clockwise when viewed from the base end side. Therefore, the cap 70 having the cam member 80 moves toward the tip end side with respect to the main body 20 by rotating clockwise when viewed from the base end side.

The cam surface 81 has a first concavo-convex portion 81b, a second concavo-convex portion 81c, a third concavo-convex portion 81d, and a fourth concavo-convex portion 81e in the order in which the contact surface portion 33 abuts as the cam member 80 rotates. .. The cam surface 81 has a stopper surface portion 81f that is adjacent to the fourth uneven portion 81e and is perpendicular to the traveling direction of the contact surface portion 33.

Each uneven portion is formed by facing the proximal end side along the traveling direction of the contact surface portion 33 and the tip thereof toward the distal end side. The cam surface 81 is urged toward the proximal end side by a reaction force against compression of the wiping member 50 or the valve body 40. Therefore, when the contact surface portion 33 gets over the uneven portion, the cap 70 can give the operator a feeling of operation accompanying the rotation operation of the cap 70. Further, since the contact surface portion 33 is locked to the cam surface 81 when it gets over the uneven portion, the cap 70 can be temporarily stopped at a specific rotation position.

The first uneven portion 81b is formed at a position where the contact surface portion 33 is locked at that position so that the tip surface of the second pressing body 73 compresses the wiping member 50 and the medical device 110 can be wiped. Has been done. As shown in FIG. 4B, in the first uneven portion 81b, when the contact surface portion 33 is locked to the first uneven portion 81b, the base end wall 71 of the cap 70 is the base end surface of the first pressing body 60. It is preferable that it is formed at a position where it is in contact with the surface. The second uneven portion 81c is a position where the contact surface portion 33 is locked at that position so that the first pressing body 60 compresses the valve body 40 so that the medical device 110 is slidable in a liquid-tight state. Is formed in. The third uneven portion 81d is a position where the contact surface portion 33 is locked at that position so that the first pressing body 60 compresses the valve body 40 so that the medical device 110 is in a liquid-tight state and cannot slide. Is formed in. In the fourth uneven portion 81e, the contact surface portion 33 is locked at that position, so that the first pressing body 60 compresses the valve body 40, and the valve body 40 is inserted in a state where the medical device 110 is not inserted. It is formed in a closed position.

In the present embodiment, the cam member 80 of the cap 70 is provided with the cam surface 81, and the main body 20 is provided with the contact surface portion 33. However, the main body 20 is provided with the cam surface 81 and the cap 70 is provided with the contact surface portion 33. May be provided respectively.

Examples of the material forming the main body 20, the connecting portion 21, the cap 70 and the first pressing body 60 include thermoplastic resins such as polycarbonate, polyamide, polysulfone, polyarylate, and methacrylate-butylene-styrene copolymer. The materials forming the main body 20, the connecting portion 21, the cap 70, and the first pressing body 60 may be the same or different. The material forming the main body 20, the connecting portion 21, the cap 70 and the first pressing body 60 is preferably transparent or translucent. Thereby, the state of the medical tool 110, the valve body 40 and the wiping member 50 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.

In the lumen of the main body 20 (first lumen 31), the lumen of the valve body 40 (second lumen 41), the lumen of the wiping member 50 (fourth lumen 51), the first pressing The lumen of the body 60 (third lumen 61) and the lumen of the second pressing body (fifth lumen 74) communicate in the longitudinal direction so that the elongated medical device 110 can be inserted. is doing. The central axes of each lumen in the longitudinal direction are approximately the same.

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 compresses the valve body 40 and the wiping member 50 by the first pressing body 60 and the second pressing body 73 as shown in FIG. 4 (a). The medical device 110 is inserted from the base end of the medical connector 10 in the open state. At this time, the medical device 110 does not block the second lumen 41 of the valve body 40 and does not block the fourth lumen 51 of the wiping member 50. Therefore, the outer surface of the medical device 110 does not come into contact with the surface of the second lumen 41 of the valve body 40 or the surface of the fourth lumen 51 of the wiping member 50, 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 the medical connector 10 is in the open state, the contact surface portion 33 is located on the neutral surface portion 81a of the cam surface 81. In this state, the marker portion 78 of the cap 70 has the display of "OPEN" overlapped with the instruction display portion 38.

When removing the medical device 110 inserted into the blood vessel, the operator rotates the cap 70 clockwise when viewed from the proximal end side, and as shown in FIG. 4 (b), the second pressing body. The 73 is moved toward the tip. The second pressing body 73 compresses the wiping member 50 whose movement is restricted by the pressing body step portion 66 of the first pressing body 60 and the inner surface of the first pressing body 60, and the inner diameter of the wiping member 50 is reduced. Transform it so that it becomes smaller. As a result, the wiping member 50 can come into contact with the outer surface of the medical device 110 and remove the blood adhering to the outer surface of the medical device 110.

When the medical connector 10 is in the wiped state, the contact surface portion 33 is located on the first uneven portion 81b of the cam surface 81, which gives the operator a feeling of operation and allows the cap 70 to be temporarily stopped. .. In this state, the marker portion 78 of the cap 70 has the display of "WIPE" overlapped with the instruction display portion 38.

When the valve body 40 of the medical connector 10 is closed to keep the medical device 110 liquid-tight, the operator rotates the cap 70 clockwise when viewed from the proximal end side, and is shown in FIG. 5 (a). As described above, the second pressing body 73 is moved toward the tip end. After the base end wall 71 of the cap 70 comes into contact with the base end surface of the first pressing body 60, when the operator further rotates the cap 70 clockwise, the base end wall 71 of the first pressing body 60 The base end surface is pressed, and the first pressing body 60 is moved toward the tip end side. The first pressing body 60 compresses the valve body 40 whose movement is restricted by the stepped portion 36 of the main body 20 and the inner surface of the main body 20. As a result, the valve body 40 is deformed so that the inner diameter becomes smaller, and the medical connector 10 is in the first liquid-tight state. In the first liquid-tight state, the compressed valve body 40 comes into contact with the outer surface of the medical device 110 and keeps 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 40 and can move in the long axis direction.

When the medical connector 10 is in the first liquid-tight state, the contact surface portion 33 is located at the second uneven portion 81c of the cam surface 81, which gives the operator a feeling of operation and temporarily stops the cap 70. Can be made to. In this state, in the marker portion 78 of the cap 70, the display of “1” overlaps with the instruction display portion 38.

When the surgeon further rotates the cap 70 clockwise when viewed from the proximal end side from the first liquid-tight state, as shown in FIG. 5 (b), the second pressing body 73 causes the first The pressing body 60 of the above moves further toward the tip end. As a result, the valve body 40 is further compressed. As a result, the inner diameter of the valve body 40 is deformed to be smaller, the contact area between the inner surface of the valve body 40 and the outer surface of the medical device 110 is increased, and the medical connector 10 is in a second liquidtight state. It becomes. In the second liquid-tight state, the compressed valve body 40 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 the medical connector 10 is in the second liquid-tight state, the contact surface portion 33 is located at the third uneven portion 81d of the cam surface 81, which gives the operator a feeling of operation and temporarily stops the cap 70. Can be made to. In this state, the marker portion 78 of the cap 70 has the display of “2” overlapped with the instruction display portion 38.

When the medical device 110 is held in a liquid-tight state, the wiping member 50 moves toward the tip end together with the first pressing body 60. Therefore, the wiping member 50 is not further compressed while the valve body 40 is compressed by the first pressing body 60. Therefore, the medical connector 10 can suppress damage due to excessive deformation of the wiping member 50. Further, the wiping member 50 is maintained in a constant compressed state while the valve body 40 is compressed by the first pressing body 60. Therefore, the medical connector 10 can reduce peeling of the coating of the medical device 110 and an increase in operating resistance due to excessive contact between the wiping member 50 and the medical device 110 when the medical device 110 is removed while being held liquid tightly. ..

When the operator wants to completely close the valve body 40 of the medical connector 10, the operator rotates the cap 70 clockwise when viewed from the proximal end side without inserting the medical device 110 into the medical connector 10. .. When the first pressing body 60 moves further to the tip than the position in the second liquid-tight state, as shown in FIG. 6, the first pressing body 60 has the inner surface of the main body accommodating portion 37 and the main body step portion. The valve body 40 whose movement is restricted by the proximal end surface of 36 is compressed. As a result, the lumen of the valve body 40 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.

When the medical connector 10 is closed, the contact surface portion 33 is located at the fourth uneven portion 81e of the cam surface 81, which gives the operator a feeling of operation and allows the cap 70 to be temporarily stopped. .. In this state, the marker portion 78 of the cap 70 has the display of "CLOSE" overlapped with the instruction display portion 38.

A modified example of the medical connector 10 will be described. As shown in FIG. 7, the medical connector 10 may not be provided with a gear mechanism between the main body and the cap. In this case, a screw portion 91 is provided on the outer surface of the base end portion of the main body 90. Further, on the inner surface of the cap 100, a screw portion 101 screwing with the screw portion 91 of the main body 90 is provided. Other parts are the same as the medical connector 10 shown in FIG.

When the cap 100 is rotated clockwise when viewed from the base end side, the cap 100 moves toward the tip end side with respect to the main body 90. As a result, the second pressing body 73 compresses the wiping member 50 arranged in the third lumen 61 of the first pressing body 60, and the first pressing body 60 further compresses the wiping member 50 arranged in the third lumen 61, and the first pressing body 60 further compresses the first lumen of the main body 20. The valve body 40 arranged at 31 is compressed. In the example of FIG. 7, since the cap 100 does not have a gear mechanism, the cap 100 rotates continuously in the circumferential direction. As a result, the compressed state of the wiping member 50 can be continuously adjusted, so that the cap 100 can adjust the inner diameter of the wiping member 50 according to the outer diameter of the medical device 110 to be inserted. Therefore, the medical connector 10 can reliably remove blood from the outer surface of the medical device regardless of the outer diameter of the medical device 110.

As described above, the medical connector 10 according to the present embodiment extends between the tip end and the base end along the long axis direction, and has a first lumen 31 through which a long medical device 110 can be inserted. A tubular main body 20 provided, a valve body 40 having a second lumen 41 provided in the first lumen 31 and whose inner diameter is reduced by deformation, and a second lumen 31 provided in the first lumen 31. A wiping member having a first pressing body 60 having a third lumen 61 communicating with the lumen 41 of the above, and a fourth lumen 51 provided in the third lumen 61 and whose inner diameter is reduced by deformation. The first pressing body 60 includes a 50 and a second pressing body 73 that can move along the longitudinal direction toward the wiping member 50 in the third lumen 61, and the first pressing body 60 together with the wiping member 50 is the first. When pressed by the pressing body 73 of 2, the valve body 40 moves toward the tip side along the long axis direction and deforms the valve body 40. The medical connector 10 configured in this way can adjust the contact state between the wiping member 50 and the outer surface of the medical device 110 by moving the second pressing body 73 toward the tip end. As a result, the medical connector 10 can surely remove blood from the outer surface of the medical device, and can suppress a decrease in operability of the medical device 110 due to the removal of blood. Further, the medical connector 10 can perform both compression of the wiping member 50 and compression of the valve body 40 only by moving the second pressing body 73. Therefore, the operator can adjust the contact state between the wiping member 50 or the valve body 40 and the medical device 110 with one hand.

Further, the second pressing body 73 may be formed on a cap 70 rotatably provided at the base end portion of the main body 20. As a result, the medical connector 10 can be easily operated by the operator because the second pressing body 73 moves with the rotation of the cap 70.

Further, the first pressing body 60 having a constant outer diameter along the long axis direction is provided with a pressing body step portion 66 in which the diameter of the third lumen 61 increases stepwise toward the proximal end side. You may. As a result, the area of the tip surface of the first pressing body 60 of the first pressing body 60 becomes large, and the contact area with the valve body 40 becomes large, so that the valve body 40 can be efficiently compressed. Further, by providing the pressing body step portion 66 on the first pressing body 60, the wiping member 50 can be arranged so as to come into contact with the inner surface of the first pressing body 60 and the pressing body step portion 66, and thus for medical use. The connector 10 can efficiently compress the wiping member 50 by the second pressing body 73.

Further, the maximum length of the second pressing body 73 entering the third lumen 61 of the first pressing body 60 is shorter than the length from the base end of the first pressing body 60 to the pressing body step portion 66. , The length from the base end of the first pressing body 60 to the base end of the wiping member 50 may be longer than the length. When the valve body 40 of the medical connector 10 is closed and the second pressing body 73 is moved toward the tip end in order to hold the medical device 110 liquid-tightly, the wiping member 50 is at the tip together with the first pressing body 60. Move in the direction. While the valve body 40 is compressed by the first pressing body 60, the wiping member 50 is not further compressed and is maintained in a predetermined compressed state. Therefore, the medical connector 10 can suppress damage due to excessive deformation of the wiping member 50. Further, the medical connector 10 can reduce peeling of the coating of the medical device 110 and an increase in operating resistance due to excessive contact between the wiping member 50 and the medical device 110.

Further, one of the main body 20 and the cap 70 has a cam surface 81 having an uneven portion along the circumferential direction, and the other of the main body 20 and the cap 70 has a contact surface portion 33 that abuts on the cam surface 81. The contact surface portion 33 may engage with and disengage from the uneven portion of the cam surface 81 as the cap 70 rotates. As a result, the medical connector 10 can give the operator a feeling of operation due to the rotation of the cap 70. Therefore, the operator can easily switch the compressed state of the wiping member 50 and the valve body 40 by tactile sensation.

Further, the uneven portion is formed at a position on the cam surface 81 where the contact surface portion 33 is located at least when the base end wall 71 of the cap 70 comes into contact with the base end surface of the first pressing body 60. May be good. As a result, the medical connector 10 can inform the operator that the medical device 110 can be wiped by the wiping member 50. Further, the operator can grasp that when the cap 70 is further rotated, the compression of the valve body 40 is started.

Further, the uneven portion is a contact surface portion when at least the first pressing body 60 of the cam surface 81 compresses the valve body 40 in the long axis direction and holds the medical device 110 in a slidable and liquid-tight state. It is formed at a place where the 33 is located and a place where the contact surface portion 33 is located when the first pressing body 60 compresses the valve body 40 in the long axis direction and holds the medical device 110 non-sliding. You may do so. As a result, the medical connector 10 can inform the operator of the stepwise compression state of the valve body 40.

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 23 branching from the main pipe 22. Further, the long medical device 110 inserted through the medical connector 10 is not limited to the guide wire and the catheter.

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 cap 70 on which the second pressing body 73 is formed by a robot that can be remotely controlled. Further, the medical connector 10 may include a receiving unit for receiving an electrical signal for remotely controlling the rotation of the cap 70 on the cap 70 on which the second pressing body 73 is formed.

10 Medical connector 20 Main body 21 Connection part 22 Main pipe 23 Side pipe 30 Wall part 31 First lumen 33 Contact surface part 35 Main body side convex part 36 Main body stepped part 37 Main body accommodating part 38 Instruction display part 40 Valve body 41 2 lumen 42 Constriction 50 Wiping member 51 4th lumen 60 1st pressing body 61 3rd lumen 66 Pressing body stepped part 67 Pressing body accommodating part 68 Outer outer convex part 69 Inner peripheral convex part 71 Base end wall 72 Opening 73 Second pressing body 74 Fifth lumen 75 Peripheral wall 76 Convex part 78 Marker part 80 Cam member 81 Cam surface 81a Neutral surface part 81b First uneven part 81c Second uneven part 81d Third uneven part 81e Fourth Concavo-convex part 81f Stopper surface part 110 Medical equipment

Claims (7)

A tubular body that extends along the longitudinal direction between the tips and bases and has a first lumen through which a long medical device can be inserted.
A valve body provided in the first lumen and having a second lumen whose inner diameter is reduced by deformation, and a valve body.
A first pressing body provided in the first lumen and having a third lumen communicating with the second lumen.
A wiping member provided in the third lumen and having a fourth lumen whose inner diameter is reduced by deformation.
A second pressing body that can move in the third lumen toward the wiping member along the longitudinal direction is provided.
The first pressing body is a medical connector that is pressed by the second pressing body together with the wiping member to move toward the tip side along the long axis direction and deforms the valve body. The medical connector according to claim 1, wherein the second pressing body is formed on a cap rotatably provided at a base end portion of the main body. The second aspect of the present invention, wherein the first pressing body having a constant outer diameter along the major axis direction includes a pressing body step portion in which the diameter of the third lumen increases stepwise toward the proximal end side. Medical connector. The maximum length of the second pressing body entering the third lumen of the first pressing body is shorter than the length from the base end of the first pressing body to the stepped portion of the pressing body. The medical connector according to claim 3, which is longer than the length from the base end of the first pressing body to the base end of the wiping member. One of the main body and the cap is provided with a cam surface having an uneven portion along the circumferential direction.
The other of the main body and the cap has a contact surface portion that abuts on the cam surface.
The medical connector according to any one of claims 2 to 4, wherein the contact surface portion engages with and disengages from the uneven portion of the cam surface as the cap rotates. The fifth aspect of the present invention, wherein the uneven portion is formed at a position where the contact surface portion is located when at least the base end wall of the cap of the cam surface comes into contact with the base end surface of the first pressing body. Medical connector. The uneven portion is formed when at least the first pressing body of the cam surface compresses the valve body in the longitudinal direction to hold the medical device in a slidable and liquid-tight state. Is formed at a location where the contact surface portion is located when the first pressing body compresses the valve body in the longitudinal direction and holds the medical device non-sliding. The medical connector according to claim 6 or 7.

Images