JP6891602B2 - Medical port - Google Patents

Description

The present invention relates to a medical port.

Conventionally, dialysis treatment has been performed on a patient with renal dysfunction in order to purify the patient's blood. In dialysis treatment, blood taken out from a patient is dialyzed (hemodialysis) by a dialyzer made of a semipermeable membrane to remove impurities from the blood.

Among dialysis treatments, in hemodiafiltration (HDF), blood purification efficiency can be improved by combining hemodialysis with filtration. In HDF, the reduced amount of blood due to filtration is replaced with blood before or after dialysis. Among HDFs, a technique in which a part of the dialysate supplied to the dialyzer is used as a replacement fluid is called online HDF. In online HDF, since the dialysate is added to the blood, it is necessary to strictly control the amount of bacteria and endotoxin in the dialysate.

In order to carry out such online HDF and the like, there is known a technique of arranging a port on a line through which dialysate flows in a blood purification device and collecting dialysate using this port (for example, Patent Document 1). reference). The dialysate shunted using the port is used for replacement of blood, measurement of the amount of bacteria and endotoxin, and the like.

Japanese Patent No. 5479520

By the way, in such a medical port, a connection port of a tube for collecting a liquid is formed, and it is required that the connection port can be easily opened and closed. Therefore, there is known a technique of closing the connection port by bringing the lid member into close contact with the opening serving as the connection port. The lid member has a sealing portion for sealing the connection port and a holding portion for holding the sealing portion. The sealing part is made of rubber material and is a consumable part, so it needs to be replaced regularly.

However, when replacing the sealing portion, the sealing portion may not be removed from the medical port unless a tool or the like is used, and the work of replacing the sealing portion is complicated. In addition, the connection port of the tube for collecting fluid in the medical port needs to be kept clean.

The present invention has been made in view of the above problems, and it is easy to provide a sealing portion for sealing the connection port of the tube for collecting the liquid while keeping the connection port of the tube for collecting the liquid clean. The purpose is to provide a medical port that can be exchanged for.

The present invention is a medical port arranged in a line through which a liquid flows, and has an inner cylinder portion in which an introduction port into which the liquid flowing through the line is introduced and an outlet from which the liquid is drawn out are formed, and the above-mentioned inner cylinder portion. A main body portion in which a tubular inner cylinder accommodating portion for accommodating the inner cylinder portion is formed so that a space through which a liquid can flow is formed between the inner cylinder portion and the outer circumference, and the outlet in the main body portion. Is arranged on the side where the inner cylinder is located and protrudes from the periphery of the inner cylinder accommodating portion in the extending direction of the inner cylinder portion, and is detachably attached to the outer peripheral wall portion having an opening at the tip portion and the outer peripheral wall portion. A lid member is provided, and the lid member is detachably attached to the lid main body by sliding in a direction intersecting the lid main body in a direction in which the inner cylinder portion extends. The slide member relates to a medical port having a sealing portion for sealing the opening and a holding portion for holding the sealing portion.

Further, the slide member has a pair of slide-side engaging claws arranged at both ends in a direction orthogonal to the slide direction in which the slide member slides, and the lid body has the pair of slide-side engagements. It is preferable to have a lid body side engaging portion that can be engaged with the claw portion.

According to the present invention, it is provided a medical port that can easily replace the sealing portion that seals the connection port of the tube for collecting liquid while keeping the connection port of the tube for collecting liquid clean. Can be done.

It is a schematic diagram which shows the blood purification system in one Embodiment of this invention. It is a perspective view of the port which concerns on one Embodiment of this invention. It is a top view of the port which concerns on this embodiment. It is sectional drawing of the port which concerns on this embodiment, and is sectional drawing of the line AA of FIG. It is sectional drawing of the port which concerns on this embodiment, and is sectional drawing of the line BB of FIG. It is sectional drawing which shows the state which opened the opening of the port which concerns on this embodiment. It is sectional drawing which shows the state which the slide member was removed from the lid member. It is a perspective view which looked at the state which removed the slide member from a lid member from the diagonally lower side. It is a perspective view which looked at the state which removed the slide member from a lid member from the diagonally upper side. It is sectional drawing for demonstrating the usage method of the port which concerns on this Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing a blood purification system 100 according to the present embodiment. The blood purification system 100 is a system capable of performing online HDF. The blood purification system 100 includes a dialyzer 200, an arterial blood line L3, a venous blood line L4, and a blood purification device 10.

The dialyzer 200 purifies the blood by performing dialysis between the blood and the dialysate.
Blood collected from patient H flows through the arterial blood line L3. The arterial blood line L3 is connected to the artery of patient H on the upstream side and to the dialyzer 200 on the downstream side. The blood flowing through the arterial blood line L3 is supplied to the dialyzer 200. An arterial air trap chamber 301 is arranged in the arterial blood line L3.

The venous blood line L4 is connected to the dialyzer 200 on the upstream side and to the vein of patient H on the downstream side. The blood drained from the dialyzer 200 is returned to patient H. A venous air trap chamber 401 is arranged in the venous blood line L4.

Further, as shown in FIG. 1, the blood purification device 10 includes a dialysate container 110, a dialysate supply line L1, a port 1 as a medical port, a dialysate recovery line L2, and a dialysate recovery container 120. , Equipped with.

The dialysate container 110 houses the dialysate.
The dialysate supply line L1 is connected to the dialysate container 110 on the upstream side and to the dialyzer 200 on the downstream side. The dialysate supplied to the dialyzer 200 is distributed in the dialysate supply line L1. The dialysate supply line L1 includes a first dialysate supply line L11 and a second dialysate supply line L12. The upstream side of the first dialysate supply line L11 is connected to the dialysate container 110, and the downstream side is connected to the dialyzer 200. The upstream side of the second dialysate supply line L12 is connected to the dialysate container 110, and the downstream side joins the first dialysate supply line L11.

The port 1 is arranged on the dialysate supply line L1 (second dialysate supply line L12). The port 1 supplies the dialysate to the arterial side air trap chamber 301 or the like or the venous side air trap chamber 401 or the like through the branch line L5 connected to the port 1. Port 1 will be described in detail later.

The upstream side of the dialysate recovery line L2 is connected to the dialyzer 200, and the dialysate discharged from the dialyzer 200 flows through the dialyzer 200.
The dialysate recovery container 120 is connected to the downstream side of the dialysate recovery line L2, and stores the dialysate collected through the dialysate recovery line L2.
Pumps, valves and the like are arranged in each line included in the blood purification system 100 as needed.

FIG. 2 is a perspective view of a port 1 according to an embodiment of the present invention. FIG. 3 is a plan view of the port according to the present embodiment. FIG. 4 is a cross-sectional view of the port 1 according to the present embodiment, and is a cross-sectional view taken along the line AA of FIG. FIG. 5 is a cross-sectional view of the port 1 according to the present embodiment, and is a cross-sectional view taken along the line BB of FIG. FIG. 6 is a cross-sectional view showing a state in which the opening 61 of the port 1 according to the present embodiment is opened.

As shown in FIGS. 2 to 5, the port 1 has an inner cylinder portion 3, a main body portion 4, an inclined cylinder portion 5, a lid member 7, a shaft 8 as a shaft member, and a spring as an urging member. 9 and.

As shown in FIG. 2, the main body 4 is formed in a shape in which one lower corner of a rectangular parallelepiped is recessed upward. A main body upper surface member 4a is attached to the upper part of the main body 4. The main body upper surface member 4a constitutes the upper surface of the main body portion 4 and is formed in a rectangular shape in a plan view. The main body upper surface member 4a functions as a drip-proof packing. As shown in FIGS. 4 and 5, the main body 4 includes an inner cylinder accommodating portion 41 in which the inner cylinder portion 3 is arranged, an inclined cylinder accommodating portion 43 in which the inclined cylinder portion 5 is accommodated, and an outer peripheral wall portion 6. Is formed. The inner cylinder accommodating portion 41 is formed as a through hole extending in a direction orthogonal to the main body upper surface member 4a. The inclined cylinder accommodating portion 43 is formed as a hole having one end side communicating with the inner cylinder accommodating portion 41 and extending in a direction inclined with respect to a direction orthogonal to the main body upper surface member 4a.

The inner cylinder portion 3 is formed in a cylindrical shape. The inner cylinder portion 3 is housed in the inner cylinder accommodating portion 41 as shown in FIGS. 4 and 5. The inner cylinder portion 3 extends in a direction orthogonal to the main body upper surface member 4a on the back surface side of the main body upper surface member 4a. A dialysate can flow between the outer circumference of the inner cylinder portion 3 and the inner wall of the inner cylinder accommodating portion 41 from one end side (upper end side shown in FIGS. 4 and 5) of the inner cylinder portion 3 to the central portion. Space is formed. That is, the inner diameter of the inner cylinder accommodating portion 41 is formed to be larger than the outer diameter of the inner cylinder portion 3 from one end side to the central portion. In the portion on the other end side from the central portion of the inner cylinder portion 3, the outer diameter of the inner cylinder portion 3 and the inner diameter of the inner cylinder accommodating portion 41 are formed to be substantially the same. As a result, the inner cylinder accommodating portion 41 is sealed in the portion on the other end side from the central portion.

As shown in FIGS. 4 and 5, the introduction port 31 into which the dialysate flowing through the dialysate supply line L1 (second dialysate supply line L12) and the dialysate are led out to the inner cylinder portion 3. The outlet 32 is formed. The inner cylinder portion 3 includes an introduction path 33 formed between the introduction port 31 and the outlet port 32. A screw thread 36 is provided on the outer circumference of the inner cylinder portion 3 on the outlet 32 side. The inner cylinder portion 3 is fixed to the main body portion 4 by the fastening member 34 via the plate-shaped pressing member 35.

The inclined tubular portion 5 is formed in a cylindrical shape. As shown in FIGS. 4 and 5, one end of the inclined cylinder portion 5 is accommodated in the inclined cylinder accommodating portion 43. The inclined cylinder portion 5 is arranged on the back surface side of the main body upper surface member 4a so as to be inclined with respect to the direction orthogonal to the main body upper surface member 4a. One end of the inclined cylinder portion 5 communicates with a portion of the inner cylinder accommodating portion 41 where a space is formed between the outer circumference of the inner cylinder portion 3 and the inner wall of the inner cylinder accommodating portion 41, and the other end side is a dialysate supply line. The lead-out path 51 to be connected is formed. The inclined cylinder portion 5 leads the dialysate flowing through the inner cylinder accommodating portion 41 to the dialysate supply line L1. The inclined tubular portion 5 is fixed to the main body portion 4 by the fastening member 52 via the plate-shaped pressing member 53.

The outer peripheral wall portion 6 is arranged on the side of the main body portion 4 where the outlet 32 is located. The outer peripheral wall portion 6 projects from the periphery of the inner cylinder accommodating portion 41 in the extending direction of the inner cylinder portion 3 and penetrates the hole 21 formed in the upper surface member 4a of the main body. An opening 61, which is a tube connection port, is formed on the tip end side of the outer peripheral wall portion 6. The inner peripheral surface of the outer peripheral wall portion 6 includes a tapered surface 62 that is inclined so that the diameter of the opening 61 increases toward the opening 61 side.

As shown in FIG. 3, the lid member 7 is formed so as to extend in a predetermined direction in a plan view. As shown in FIGS. 2 and 3, the lid member 7 is arranged on the other surface (surface) side of the main body upper surface member 4a. The lid member 7 is detachably attached to the outer peripheral wall portion 6. As shown in FIG. 5, the lid member 7 is attached to the upper end of the shaft 8 whose base end side extends in the vertical direction, and the tip end side is formed so as to project in the horizontal direction. The lid member 7 includes a lid main body 71 having a diameter larger than that of the opening 61, and a slide member 72 that is detachably attached to the lid main body 71.

The slide member 72 has a holding portion 73 and a sealing portion 76 that is detachably held by the holding portion 73. The configuration in which the slide member 72 is detachably attached to the lid member 7 will be described later.

The sealing portion 76 is made of an elastic member made of resin or rubber, and the peripheral edge on the protruding direction side abuts on the tapered surface 62 to seal the opening 61. That is, the sealing portion 76 is configured so that its outer diameter is larger than the inner diameter of the outer peripheral wall portion 6 and smaller than the outer diameter of the outer peripheral wall portion 6. The sealing portion 76 is held and supported by the holding portion 73. In a state where the sealing portion 76 is in contact with the tapered surface 62, a gap is formed between the sealing portion 76 and the end of the inner cylinder portion 3 for the dialysate to pass through. The holding portion 73 will be described later.

As shown in FIG. 5, the shaft 8 extends in a direction orthogonal to the main body upper surface member 4a. The shaft 8 is inserted into a hole 42 formed in the main body portion 4 and penetrates a hole 22 formed in the main body upper surface member 4a. The shaft 8 is connected to the lid main body 71 on the front surface side of the main body upper surface member 4a. The shaft 8 is slidable in the axial direction with respect to the main body 4. The shaft 8 connects the lid main body 71 and the main body 4 so that the distance between the lid member 7 and the main body 4 can be changed and the lid member 7 can be rotated with respect to the main body 4. Further, the shaft 8 has a spring receiver 81 extending in the outer peripheral direction at the end portion on the back surface side of the main body upper surface member 4a.

As shown in FIG. 2, the spring 9 is wound between the main body 4 and the spring receiver 81 of the shaft 8. The spring 9 is arranged between the main body 4 and the spring receiver 81 in a compressed state, and urges the lid member 7 toward the main body 4. As shown in FIG. 5, the spring 9 urges the lid member 7 toward the main body 4 to bring the sealing portion 76 into close contact with the tapered surface 62. When opening the opening 61, which is the connection port of the tube, as shown in FIG. 6, the lid body 71 is moved in the axial direction of the shaft 8 against the urging force of the spring 9, so that the lid member 7 and the lid member 7 are opened. Increase the distance from the main body 4.

A configuration in which the slide member 72 is detachably attached to the lid member 7 will be described. FIG. 7 is a cross-sectional view showing a state in which the slide member 72 is removed from the lid member 7. FIG. 8 is a perspective view of the state in which the slide member 72 is removed from the lid member 7 as viewed from an obliquely downward side. FIG. 9 is a perspective view of the state in which the slide member 72 is removed from the lid member 7 as viewed from an obliquely upper side.

As shown in FIGS. 7 to 9, the lid body 71 is formed so as to extend in the longitudinal direction. The lid member 7 is configured to be rotatable along the horizontal direction with the shaft 8 (see FIG. 6) pulled up, and the lid body 71 is gripped by the user when the lid member 7 is operated. Since the slide member 72 is configured to be slidable in the longitudinal direction of the lid main body 71, the slide member 72 is detachably attached to the lid main body 71 with respect to the lid main body 71. In the present embodiment, the slide direction in which the slide member 72 is slid and slid detachably with respect to the lid main body 71 is a horizontal direction and coincides with the longitudinal direction of the lid main body 71. Further, the slide direction of the slide member 72 is also a direction orthogonal to (intersects) the direction in which the inner cylinder portion 3 (see FIG. 5) extends.

As shown in FIGS. 7 to 9, the lid main body 71 has a mounting recess 711, a pair of lid member side guide portions 712, 712, and a lid main body side engaging portion 713.

The mounting recess 711 is formed at one end (tip) in the longitudinal direction of the lid body 71, which is recessed from below to above the lid body 71 and recessed rearward from the tip of the lid body 71. A slide member 72 is arranged in the mounting recess 711.

The pair of lid member side guide portions 712 and 712 are provided at both ends in the direction orthogonal to the longitudinal direction of the lid main body 71 in the lower portion above the portion of the lid main body 71 where the mounting recess 711 is provided, in the longitudinal direction of the lid main body 71. It is formed by extending along. The pair of lid member side guide portions 712 and 712 are arranged in parallel with each other. A pair of slide member side guide portions 746, 746 (described later) of the slide member 72 are attached to the pair of lid member side guide portions 712 and 712 so as to be movable in the slide direction.

The pair of lid member side guide portions 712 and 712 have a lid side groove 712a extending in the longitudinal direction of the lid body 71 and a lid side groove below the lid side groove 712a, respectively, at both ends in a direction orthogonal to the longitudinal direction of the lid body 71. It has a lid-side convex portion 712b formed along the 712a. The lid side groove 712a is formed in a groove shape that opens outward in a direction orthogonal to the longitudinal direction of the lid main body 71. The lid-side convex portion 712b projects outward in the direction orthogonal to the longitudinal direction of the lid main body 71 below the lid-side groove 712a.

The lid body side engaging portion 713 is formed in a groove shape extending in a direction orthogonal to the longitudinal direction of the lid body 71 on the rear side portion of the mounting recess 711. When the slide member 72 is attached to the lid body 71, the pair of slide-side engaging claws 745 and 745 of the slide member 72 are engaged with the lid body-side engaging portion 713. The lid body side engaging portion 713 has an extending groove 713a extending in a direction orthogonal to the longitudinal direction of the lid body 71 and a downward extending wall portion arranged along the extending groove 713a on the tip end side of the extending groove 713a. It has 713b and.

The slide member 72 can be attached to and detached from the lid main body 71 by sliding in the sliding direction (horizontal direction, in the direction orthogonal to (crossing) the direction in which the inner cylinder portion 3 (see FIG. 5) extends) with respect to the lid main body 71. It is attached. The slide member 72 has a holding portion 73 and a sealing portion 76.

The holding portion 73 holds and supports the sealing portion 76. As shown in FIG. 7, the holding portion 73 has a slide housing 74 and a connecting member 75.

As shown in FIGS. 7 to 9, the slide housing 74 is formed in a cup shape having an upper surface plate 741 at the upper portion and an open lower portion, an arc-shaped tip portion, and a flat rear portion. To.

The slide housing 74 includes a top plate 741 having an arc-shaped tip and an opening 741a penetrating in the vertical direction, a tip arc face plate 742 extending downward from the peripheral edge of the top plate 741 on the tip side, and a tip arc face plate 742. A pair of side plates 743, 743 extending rearward from the rear end, a rear plate 744 connecting the rear ends of the pair of side plates 743, 743, and a sliding member 72 at the lower end of the rear plate 744 orthogonal to the sliding direction. A pair of slide-side engaging claws 745 and 745 formed at both ends in the direction of sliding, and both ends of the slide member 72 in the direction orthogonal to the slide direction, project upward from the upper part of the upper surface plate 741 and the slide member. It has a pair of slide member side guide portions 746 and 746 extending in the slide direction of 72.

Further, the slide housing 74 has a tubular inner wall portion 747. As shown in FIGS. 7 and 8, the tubular inner wall portion 747 constitutes the inner wall of the slide housing 74 when the slide housing 74 is viewed from below. The tubular inner wall portion 747 is partially formed of the tip arcuate face plate 742 and is formed in a cylindrical shape. As shown in FIGS. 4 and 5, the tubular inner wall portion 747 is arranged so as to surround the outer periphery of the sealing portion 76 and the outer peripheral wall portion 6 in a state where the opening 61 is closed.

As shown in FIGS. 7 to 9, the pair of slide member side guide portions 746 and 746 project upward from the upper surface plate 741 of the slide housing 74 at both ends in the direction orthogonal to the slide direction of the slide member 72. It is formed. The pair of slide member side guide portions 746 and 746 are a slide member side groove 746a extending in the slide direction of the slide member 72 and a slide member, respectively, at both ends of the slide member 72 of the upper surface plate 741 of the slide housing 74 in the slide direction. It has a slide member side convex portion 746b formed above the side groove 746a along the slide member side groove 746a. The slide member side groove 746a is formed in a groove shape that opens inward in a direction orthogonal to the slide direction of the slide member 72. The slide member side convex portion 746b is formed above the slide member side groove 746a so as to project inward in a direction orthogonal to the slide direction of the slide member 72.

The pair of slide-side engaging claws 745 and 745 are formed so as to project rearward from the lower end of the rear surface plate 744 at both ends in the direction orthogonal to the slide direction of the slide member 72. The pair of slide-side engaging claws 745 and 745 have an extension portion 745a extending rearward from the lower end portion of the rear surface plate 744 and an extension portion at both ends in a direction orthogonal to the slide direction of the slide member 72. It has a hook piece 745b that projects upward from the rear end portion.

As shown in FIG. 7, the connecting member 75 is arranged inside the slide housing 74. The upper end of the connecting member 75 is connected to the slide housing 74 at the opening 741a of the upper surface plate 741 of the slide housing 74. A sealing portion 76 is connected to the lower end of the connecting member 75. The connecting member 75 has a stepped columnar portion 751 formed in a stepped columnar shape, and a stepped columnar portion 752 connected to the lower portion of the mounting columnar portion 751 and formed in a stepped shape.

The mounting column portion 751 is connected to the slide housing 74 at the opening 741a of the upper surface plate 741 of the slide housing 74.
A sealing portion 76 is connected to the stepped cylindrical portion 752. The stepped cylindrical portion 752 has a first large diameter portion 753 connected to the lower part of the mounting cylindrical portion 751 and a second large diameter portion 753 connected to the lower portion of the first large diameter portion 753 and having a larger diameter than the first large diameter portion 753. It has a part 754 and.

The sealing portion 76 is connected to the upper surface plate 741 of the slide housing 74 via the connecting member 75 inside the slide housing 74. The sealing portion 76 is formed in a cylindrical shape protruding downward from the upper surface plate 741 of the slide housing 74, and has a circular and flat lower surface. The sealing portion 76 has a mounting step recess 761 that is recessed downward on the upper surface. The stepped columnar portion 752 of the connecting member 75 is connected to the mounting stepped recess 761. Since the sealing portion 76 is composed of an elastic member, the mounting step recess 761 of the sealing portion 76 can be easily attached to and detached from the stepped columnar portion 752 of the connecting member 75 by elastically deforming it.

When the slide member 72 configured as described above is attached to the lid main body 71, the pair of slide member side guide portions 746 and 746 of the slide housing 74 of the slide member 72 are attached to the pair of lid member sides of the lid main body 71. The slide member 72 is attached to the lid main body 71 by inserting it into the guide portions 712 and 712 and moving it in the slide direction. Specifically, the rear end portions of the pair of slide member side guide portions 746 and 746 of the slide member 72 are connected to the pair of lid member side guide portions 712 from the tips of the pair of lid member side guide portions 712 and 712 of the lid body 71. , 712, the slide member side convex portion 746b of the slide member side guide portion 746 is arranged in the lid side groove 712a of the lid member side guide portion 712, and the lid side convex portion 712b of the lid member side guide portion 712 is arranged. Is arranged in the slide member side groove 746a of the slide member side guide portion 746, the slide member 72 is moved with respect to the lid main body 71 in the attachment direction in the slide direction, and the slide member 72 is attached to the lid main body 71.

Further, by moving the slide member 72 in the mounting direction in the slide direction, the pair of slide-side engaging claws 745 and 745 of the slide member 72 are elastically deformed by the hook piece 745b of the slide-side engaging claw 745. Then, it gets over the downward extending wall portion 713b of the lid main body side engaging portion 713 and is arranged in the extending groove 713a of the lid main body side engaging portion 713. As a result, the hook piece 745b of the slide side engaging claw portion 745 is hooked on the downward extending wall portion 713b of the lid body side engaging portion 713, so that the movement of the slide member 72 in the removal direction in the slide direction is restricted. In this state, the pair of slide-side engaging claws 745 and 745 of the slide member 72 are engaged with the lid-body-side engaging portion 713 of the lid body 71.

Next, a procedure for replacing the sealing portion 76 attached to the slide member 72 will be described.
First, when performing maintenance to replace the sealing portion 76, the opening 61 is opened with the lid member 7 positioned above the opening 61 which is the connection port of the tube. Specifically, when opening the opening 61 which is the connection port of the tube, as shown in FIG. 6, the lid body 71 is moved in the axial direction of the shaft 8 against the urging force of the spring 9. , Increase the distance between the lid member 7 and the main body 4.

Next, by sliding the slide member 72 with respect to the lid main body 71 in the removal direction in the slide direction, the pair of slide-side engaging claws 745 and 745 of the slide member 72 and the lid main body side engagement of the lid main body 71 are engaged. The slide member 72 is removed from the lid member 7 as shown in FIGS. 7 to 9 by disengaging the engagement with the joint portion 713.

Subsequently, the old sealing portion 76 is removed from the slide member 72, and the new sealing portion 76 is attached to the slide member 72.
After that, the pair of slide member side guide portions 746 and 746 of the slide member 72 to which the new sealing portion 76 is attached are inserted into the pair of lid member side guide portions 712 and 712 of the lid body 71, and the pair of lid members. The slide member 72 is slid and moved in the mounting direction in the sliding direction along the side guide portions 712 and 712.

Then, by further moving the slide member 72 in the mounting direction in the slide direction and pushing it toward the lid body 71 side, the pair of slide side engaging claws 745 and 745 of the slide member 72 can be moved to the lid body 71 of the lid body 71. Engage with the side engaging portion 713. As a result, the slide member 72 can be attached to the lid body 71 by engaging the pair of slide-side engaging claws 745 and 745 with the lid body-side engaging portion 713.

In this way, the slide member 72 and the lid body 71 can be easily attached to and detached by simply engaging and disengaging the pair of slide-side engaging claws 745 and 745 and the lid body-side engaging portion 713. Therefore, the sealing portion 76 attached to the slide member 72 can be easily replaced.

Here, with the lid body 71 arranged above the opening 61 of the port 1, the slide member 72 can be attached and detached by sliding the slide member 72 from the lid member 7 in the sliding direction, so that the opening 61 is suppressed from being contaminated and the port is ported. The opening 61 of 1 can be kept clean.

Further, since the pair of slide member side guide portions 746 and 746 of the slide member 72 can be moved along the pair of lid member side guide portions 712 and 712 of the lid body 71, the slide member 72 can be moved in the slide direction and in the slide direction. The slide member 72 can be easily attached to and detached from the lid body 71 by easily sliding and moving in the mounting direction.

Further, the slide member 72 can be easily attached to the lid body 71 simply by engaging the pair of slide-side engaging claws 745 and 745 with the lid body-side engaging portion 713. Further, the pair of slide-side engaging claws 745 and 745 are arranged so as to get over the downward extending wall portion 713b of the lid body-side engaging portion 713 and fit into the extending groove 713a of the lid body-side engaging portion 713. Therefore, it is possible to feel the sensation when engaging with the lid body side engaging portion 713, and it is possible to intuitively recognize the completion of the attachment of the slide member 72.

Subsequently, the usage (operation) of the port 1 will be described. FIG. 10 is a cross-sectional view for explaining how to use the port. Note that FIG. 10 is a view corresponding to the cross-sectional view of FIG.
First, in the state where the opening 61 is closed, as shown in FIG. 5, the lid member 7 is urged toward the main body 4 side by the restoring force of the spring 9. By urging the lid member 7 toward the main body 4, the sealing portion 76 is brought into close contact with the tapered surface 62, and the opening 61 is sealed. At this time, the dialysate flows through the dialysate supply line L1 and then through the introduction path 33 (arranged in the inner cylinder accommodating portion 41) from the introduction port 31. After that, the dialysate led out from the outlet 32 is a gap between the sealing portion 76 and the end of the inner cylinder portion 3, and a space between the outer circumference of the inner cylinder portion 3 and the inner wall of the inner cylinder accommodating portion 41. Is circulated and led out to the dialysate supply line L1 again through the lead-out path 51 (see FIG. 4).

When opening the opening 61, as shown in FIG. 6, after stopping the flow of dialysate in the second dialysate supply line L12 of the blood purification device 10, the lid body 71 resists the urging force of the spring 9. Is moved in the axial direction of the shaft 8 to increase the distance between the lid member 7 and the main body 4. Subsequently, as shown in FIG. 10, the lid member 7 covers the opening 61 in a state where the lid main body 71 is pulled to a position where the outer peripheral wall portion 6 and the tubular inner wall portion 747 do not overlap in the axial direction of the shaft 8. Rotate the shaft 8 around the main body 4 to a position where it does not exist.

Subsequently, as shown in FIG. 10, the branch line L5 is connected to the outlet 32 side of the inner cylinder portion 3. At the end of the branch line L5, a tubular connecting member 37 having a groove corresponding to the thread 36 is arranged inside, and the connecting member 37 is screwed to the outlet 32 side of the inner tubular portion 3. To.

In the state where the branch line L5 is connected to the inner cylinder portion 3, the dialysate introduced from the dialysate supply line L1 into the introduction path 33 is led out from the outlet 32 to the branch line L5.

According to the port 1 according to the above embodiment, the following effects are achieved.
In the above embodiment, the port 1 is formed with an introduction port 31 into which the dialysate flowing through the dialysate supply line L1 (second dialysate supply line L12) is introduced and an outlet 32 from which the dialysate is drawn out. A main body portion 4 in which a tubular inner cylinder accommodating portion 41 for accommodating the inner cylinder portion 3 is formed so that a space through which dialysate can flow is formed between the tubular portion 3 and the outer circumference of the inner cylinder portion 3. And the outer peripheral wall portion 6 which is arranged on the side where the outlet 32 of the main body portion 4 is located and protrudes from the periphery of the inner cylinder accommodating portion 41 in the extending direction of the inner cylinder portion 3 and has an opening 61 formed at the tip portion. A lid member 7 that is detachably attached to the outer peripheral wall portion 6 and seals the opening 61 is provided. Further, in the above embodiment, the lid member 7 is detachably attached to the lid main body 71 by sliding the lid member 7 in a direction intersecting the lid main body 71 in the direction in which the inner cylinder portion 3 extends. 72, and the slide member 72 was configured to include a sealing portion for sealing the opening and a holding portion for holding the sealing portion.

As a result, the slide member 72 can be attached to and detached from the lid member 7 by sliding the slide member 72 in the direction in which the inner cylinder portion 3 extends. Therefore, with the lid body 71 arranged above the opening 61 of the port 1, the slide member 72 can be attached and detached by sliding the slide member 72 from the lid member 7 in the sliding direction, so that the opening 61 is suppressed from being contaminated and the port 1 The opening 61 can be kept clean. Further, since the slide member 72 can be attached to and detached from the lid member 7 by sliding in the slide direction, the sealing portion 76 attached to the slide member 72 can be easily replaced.

Further, in the above embodiment, the slide member 72 is configured to have a pair of slide-side engaging claws 745 and 745 arranged at both ends in a direction orthogonal to the slide direction in which the slide member 72 is slid. It is configured to have a lid body side engaging portion 713 that can be engaged with the pair of slide side engaging claws 745 and 745. As a result, the slide member 72 and the lid body 71 can be easily attached to and detached by simply engaging and disengaging the pair of slide-side engaging claws 745 and 745 and the lid body-side engaging portion 713. Further, since the pair of slide-side engaging claws 745 and 745 are provided at both ends in the direction orthogonal to the slide direction of the slide member 72, the pair of slide members 72 cannot be removed from the lid member 7. The slide member 72 can be removed from the lid member 7 by breaking the slide-side engaging claws 745 and 745.

The present invention is not limited to the above embodiment, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are included in the present invention.
In the above embodiment, the port 1 is used for the blood purification device 10 that carries out the online HDF, but the use of the medical port according to the present invention is not limited to this. Further, the medical port according to the present invention may be arranged on a line through which a liquid other than the dialysate flows.

Further, in the above embodiment, the slide member 72 is composed of three separate members, a slide housing 74, a connecting member 75, and a sealing portion 76, but the present invention is not limited thereto. For example, the slide member may be configured to be composed of one member in which the sealing portion 76 is integrated, and the slide member may be replaced together. Further, the slide member may be composed of two members, a holding member in which the slide housing 74 and the connecting member 75 are integrated, and a sealing portion.

Further, in the above embodiment, the sealing portion 76 is replaced by removing the old sealing portion 76 from the slide member 72 and attaching a new sealing portion 76 to the slide member 72, but the present invention is not limited to this. The sealing portion 76 may be replaced together with the slide member 72. That is, the slide member 72 to which the new sealing portion 76 is attached may be prepared as an integral part in advance, and the sealing portion 76 may be replaced together with the slide member 72.

1 port (medical port)
3 Inner cylinder part 4 Main body part 6 Outer peripheral wall part 7 Lid member 41 Inner cylinder accommodating part 51 Outlet path 61 Opening 71 Lid body 72 Slide member 73 Holding part 76 Sealing part 745 Slide side engaging claw part 713 Lid body side engaging Department

Claims (2)

A medical port located on a liquid distribution line
An inner cylinder portion in which an introduction port into which the liquid flowing through the line is introduced and an outlet from which the liquid is drawn out is formed, and
A main body portion in which a tubular inner cylinder accommodating portion for accommodating the inner cylinder portion is formed so that a space through which a liquid can flow is formed between the inner cylinder portion and the outer circumference thereof.
An outer peripheral wall portion that is arranged on the side of the main body where the outlet is located and protrudes from the periphery of the inner cylinder accommodating portion in the extending direction of the inner cylinder portion and has an opening at the tip portion.
A lid member that moves in a direction in which the inner cylinder portion extends with respect to the tip end portion of the outer peripheral wall portion and is detachable from the tip end portion of the outer peripheral wall portion is provided.
The lid member has a lid body and a slide member that is detachably attached to the lid body by sliding in a direction intersecting the lid body in a direction in which the inner cylinder portion extends.
The slide member is a medical port having a sealing portion for sealing the opening and a holding portion for holding the sealing portion. The slide member has a pair of slide-side engaging claws arranged at both ends in a direction orthogonal to the slide direction in which the slide member slides.
The medical port according to claim 1, wherein the lid body has a lid body side engaging portion that can be engaged with the pair of slide side engaging claws.

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