JP2001299907A - Dialyzer connecting aseptic coupler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the sterilization of a coupler to be connected to the connection port of a dialyzer for artificial dialysis treatment to perfectly prevent the contamination of the coupler in the insertion to the connection port of the dialyzer, to facilitate and ensure the inserting operation of the coupler, and to provide an inexpensive dialyzer connecting aseptic coupler. SOLUTION: This coupler 5 comprises an insert port 6 formed of an elastic resin material, a tube connection port 8 communicating therewith through an internal passage 9 on the opposite end part to the insert port 6, a liquid stopping annular projection 14 formed on the circumference of the insert port 6 through a liquid flowing annular groove 13 formed in the vicinity of the tip so as to have an outer diameter closely fitted to the inside surface of the connection port 4 of a washing device 3, a body-side major diameter part 15 formed on the circumference away from the liquid stopping annular projection 14 to the inner side of the insert port 6, and an O-ring band 16 mounted on the circumference of the insert port 6 between the projection 14 and the major diameter part 15. The O-ring band 16 is rolled on the circumference of the insert part 6 by a hand, whereby the inside diameter side is contracted and the outer diameter side is extended to exhibit the fastening force to the rolled part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the sterilization of a coupler connected to a connection port of a dialyzer for performing artificial dialysis treatment,
The present invention relates to a sterile coupler for connecting a dialyzer, which completely prevents contamination when the coupler is inserted into a connection port of the dialyzer.

[0002]

2. Description of the Related Art In artificial dialysis treatment, it is necessary to supply a dialysate in a circuit to a dialyzer (dialyzer) in an aseptic state in order to protect a patient from bacterial contamination. For this reason, conventionally, the inside of the dialysate circuit is washed and disinfected after the dialysis treatment to ensure the sterility of the circuit.

FIG. 17 shows a conventional coupler 50 and a cleaning device 6.
This shows a situation where the connection port 61 has been inserted into the connection port 61. As shown in FIG. 17, the coupler 50 has an insertion port 5 having one end opened.
1 and a connection port 53 for inserting the circuit tube 52 are communicated via an internal passage 54, and a ring 55 is mounted in an inner peripheral groove 51 b provided on the inner side of the insertion port 51. 5
A plurality of fixing balls 56 are fitted in an inner peripheral groove 51a provided near one of the opening ends.

[0004] An annular recess 59 accommodating a spring 58 is formed on the inner periphery of a grip 57 slidably provided on the outer periphery of the insertion opening 51.

[0005] As shown in FIG.
The connection port 61 fixed to the panel 60a is for inserting the insertion port 51 of the coupler 50 on the outer periphery thereof, and an annular step portion 62 is formed on the outer periphery of the front end of the connection port 61, An annular recess 63 is formed on the outer periphery, and a connection port 64 communicating with the connection port 61 is formed inside the cleaning device 60, and a tube 65 is inserted around the connection port 64.

In such a configuration, the grip 57 of the coupler 50 is moved inward (to the right in FIG. 17) against the elastic force of the spring 58 so that the outer periphery of the ball 56 is released, and the coupler 50 is inserted. When the port 51 is pushed into the outer periphery of the connection port 61 of the cleaning device 60, the ball 56 of the coupler 50 is fitted into the annular recess 63 of the insertion port 51, and the annular step 62 of the connection port 61 is connected to the ring of the coupler 50. The sealing is performed by being pressed to 55.

Further, when the grip 57 returns to its natural state by its elastic force, the grip 57 holds down the outer periphery of the ball 56, so that the connection port 6 of the cleaning device 60 is formed.
1 and the insertion state of the insertion opening 51 of the coupler 50 with respect to 1 is fixedly locked.

[0008]

By the way, when the cleaning liquid or the disinfecting liquid flows in the above-mentioned inserted state, disinfecting or cleaning is performed through the internal passage of the coupler 50 and the internal passage of the connection port 61 of the cleaning device 60. Is

In such a washing and disinfecting operation, FIG.
As shown in FIG. 8, the inside of the coupler 50 at the boundary of the ring 55 is the cleaning area, but the outside of the O-ring (portion indicated by the hatched double-dashed line) does not pass the cleaning liquid or the disinfecting liquid. It becomes a contaminated zone, and the body fluid circulated in the dialysis treatment and dust from the outside remain attached.

Particularly, an inner circumferential groove 51a around the ball 56,
The annular concave portion 59 around the spring 58 is an extremely highly contaminated zone in which bacteria and dust and the like in the bodily fluid proliferate while being accumulated.

However, the coupler 50 is replaced with a coupler 60.
19, after being pulled out from the connection port 61 of the dialyzer 30, as shown in FIG. 19, the contaminated zone is attached to the end of the connection port 31 of the dialyzer 30 during the insertion operation. At the same time, a situation occurs in which contaminants are attached.

[0012] As shown in FIG.
When the dialysate is circulated with the coupler 50 inserted into the connection port 31 of the dialyser, the contaminants attached to the connection port 31 of the dialyzer 30 enter the dialyser 30, and this causes bacterial infection to the patient. The coupler 50 has a problem that a complete aseptic connection cannot be made.

Further, the conventional coupler 50 requires various components such as a spring 58 and a ring 55 in addition to a plurality of fixing balls 56, 56,...

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. The present invention is to perform aseptic disinfection of a coupler connected to a connection port of a dialyzer for performing artificial dialysis treatment. Completely prevent contamination when inserted into the connection port of the dialyzer, and easily and reliably perform the operation of inserting the coupler,
It is another object of the present invention to provide an inexpensive sterile coupler for connecting a dialyzer.

[0015]

In order to achieve the above-mentioned object, a sterile coupler for connecting a dialyzer according to the first aspect of the present invention is attached to an outer periphery of a connection port of a dialysate circuit provided in a dialyzer. On the other hand, in the coupler inserted into the inner periphery of the connection port of the cleaning device, the coupler has an insertion port formed of an elastic resin material and is connected to the opposite end of the insertion port by an internal passage. A tube connection port is provided, and a liquid stopper annular projection is formed on the outer periphery of the insertion port through a liquid flow annular groove formed near the tip, and the liquid stopper annular projection is formed on the inner periphery of the connection port of the cleaning device. A main-body-side large-diameter portion is formed on an outer periphery having an outer diameter that is in close contact with the surface and separated from the liquid-stop annular protrusion toward the inside of the insertion port, and the liquid-stop annular protrusion and the main-body-side large diameter An elastic O-ring band attached to the outer periphery of the insertion port between The inner diameter side with the to movement is characterized in that as to pivot on the outer diameter side to maintain the clamping force on the site where the rolling circumference of the insertion opening.

The sterile coupler for connecting a dialyzer according to claim 2 of the present invention is characterized in that, when the insertion port of the coupler is inserted into the outer periphery of the connection port of the dialyzer in claim 1,
By rolling and tightening the ring band until it comes into contact with the liquid stopper annular projection of the insertion port, the portion that is deformed inward by projection is fitted into the annular recess formed in the connection port of the dialyzer. In this case, the coupler is prevented from coming off.

Further, the aseptic coupler for connecting a dialyzer according to claim 3 of the present invention according to claim 1 is formed in a tapered shape in which the inner diameter of the connection port of the washing device is reduced as it goes inward. A partition having an open passage is formed above the circuit-side passage, and a concave groove flow path is formed at a lower portion of the front surface of the partition, so that the insertion port of the coupler is connected to the connection port of the cleaning device. When inserted into the inner circumference, the circuit side passage of the cleaning device, the open passage above the partition, the liquid flow annular groove at the insertion port of the coupler, the concave groove flow path of the cleaning device, and the insertion of the coupler. While the liquid flow is enabled by communicating with the internal passage of the port, the hooking piece is formed at a required portion on the inner periphery of the open end of the connection port of the cleaning device, so that the insertion port of the coupler is formed. The O-ring van locked on the large-diameter portion on the main body side Wherein the but has to perform the retaining of the coupler by being engaged with the catching piece.

The sterile coupler for connecting a dialyzer according to the present invention is made of an elastic resin material which is inserted into the outer periphery of the connection port of the dialyzer and inserted into the inner periphery of the connection port of the washing device. The outer periphery of the insertion opening formed in the coupler
A ring band is attached, and an annular body that slidably fits in the front-rear direction around the outer periphery of the main body-side large-diameter portion formed in the coupler, and a plurality of vertically divided shapes are formed on the front peripheral portion of the annular body. An O-ring band, comprising a slide grip having a holding portion extending to the outer periphery of the insertion opening of the coupler, and being fitted to the outer periphery of the insertion opening in a fitting groove formed on the inner periphery of the holding portion. And the entire circumference of the O-ring band can be evenly moved by moving the slide grip back and forth manually.

According to a fifth aspect of the present invention, there is provided the aseptic coupler for connecting a dialyzer according to the fourth aspect, wherein a hooking claw is formed partially on an outer periphery of the pressing portion of the slide grip.
By rotating the slide grip after the hooking claw is inserted into a joining state in which the hooking pieces are partially formed on the outer periphery of the distal end of the connection port of the cleaning device, the hooking claw of the holding portion is moved. The coupler connected to the cleaning device is prevented from being pulled out by being locked to a hooking piece of the cleaning device.

According to a sixth aspect of the present invention, there is provided a sterile coupler for connecting a dialyzer according to the fourth aspect, wherein the slide grip and the cleaning device are provided with a pair of position sensors, and a connection port of the cleaning device is provided. When the coupler is inserted, the cleaning device can be turned on by a signal that matches the position sensors.

Further, in the sterile coupler for connecting a dialyzer according to claim 7 of the present invention, in claim 4, a mark indicating an appropriate position when the coupler is inserted into a connection port of the cleaning device is attached to the cleaning device. And a coupler facing the coupler.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) In this embodiment, as shown in FIG. 2 and FIG. 3, a connection port of a washing apparatus 3 is inserted into the outer periphery of a connection port 2 of a dialysate circuit provided in a dialyzer 1 and is connected. 4, a sterile coupler 5 for connecting a dialyzer to be inserted into the inner periphery of the dial 4.

Referring to FIG. 1, the main body of the coupler 5 is made of an elastic resin material having excellent chemical resistance and heat resistance, for example, a somewhat soft silicone rubber or urethane rubber. A tube connection port 8 is formed integrally with the main body and has a tube connection port 8 for connecting a circuit tube 7 at the opposite end of the flow path of the insertion port 6, and as shown in FIG. The mouth 6 communicates with the internal passage 9.

The tube connection port 8 has a shape which is bent at substantially right angles from the insertion port 6 so that the insertion port 6 is horizontally connected to the connection port 2 of the dialyzer 1 or the connection port 4 of the washing device 3. When inserted in the circuit tube 7, the circuit tube 7 connected to the tube connection port 8 is hung downward to prevent the circuit tube 7 from being bent.

As shown in FIG. 2, the circuit tube 7 is fixedly connected to the tube connection port 8 with an adhesive or the like via an adapter 10 having a spiral projection 10a formed on the outer periphery thereof. The tube 7 is prevented from coming off.

The insertion opening 6 of the coupler 5 has a cylindrical shape, and has a tip annular portion 12 formed on the outer periphery of the tip thereof and a liquid flow annular groove formed on the inner periphery (right side in FIG. 2). 13, a liquid stop annular projection 14 having a diameter larger than that of the distal end annular portion 12.
Are formed. The liquid stopper annular projection 14 has an outer diameter that is in close contact with the inner peripheral surface of the connection port 4 of the cleaning device 3 as described later, and extends from the liquid stopper annular projection 14 toward the insertion port 6 by a predetermined width. A main body-side large-diameter portion 15 is formed on the separated outer periphery.

As shown in FIG. 1, the liquid stopper annular projection 14 and the main body-side large-diameter portion 15 are inserted into the insertion port 6 configured as described above.
O-ring band 1 having a circular cross-section to rollably clamp the outer periphery of the insertion opening 6 between the first and second members so as to protrude and deform the tightened portion toward the inner periphery.
6 is mounted.

As the O-ring band 16 is rolled by hand with the O-ring band 16 mounted on the outer periphery of the insertion port 6, the inner diameter side which is in close contact with the outer circumference of the insertion port 6 becomes the outer diameter side. A rotating deformable elastic member is used. Therefore, when the O-ring band 16 attached to the outer periphery of the insertion opening 6 is manually moved, the O-ring band 16 rolls without generating sliding friction on the outer periphery of the insertion opening 6 to maintain the inward tightening force. What you get.

As the form of the O-ring band 16, as shown in FIGS. 1 to 3, a soft rubber material or a resin material having a circular cross section and having elasticity is formed in a ring shape. As shown in FIG. 5 (b), a soft rubber material or a resin material having elasticity is formed in a ring shape and a number of annular projections are integrally formed on the outer periphery thereof.
1) and (b2), a coil-shaped elastic metal wire formed in a ring shape, and further, FIGS. 5 (c1) and (c).
As shown in 2), there is a silicone rubber tube in which a ring-shaped coiled elastic metal wire is housed in the hollow. In any case, the reduced inner diameter side is attached to the outer circumference of the insertion port 6 in close contact with the outer circumference of the insertion port 6, and when this is rolled by hand, the inner diameter side rotates while extending to the outer diameter side. It can move while rolling around the outer periphery of the insertion opening 6 to maintain the tightening force.

As shown in FIG. 2, the outer diameter of the O-ring band 16 is larger than the outer diameter of the liquid-stop ring projection 14, and the inner diameter of the O-ring band 16 is the liquid-stop ring protrusion of the insertion port 6. 14 is tightened so that the tightened portion is
The protrusion is deformed toward the inner peripheral side of the dialysis machine. The protrusion (inner peripheral protrusion 17) of the tightened portion is fitted into an annular concave portion 2 a formed in the connection port 2 of the dialyzer 1, so that the catch is prevented. In this way, the coupler 5 is prevented from coming off.

In FIG. 2, the insertion port 6 of the coupler 5
When the O-ring band 16 is pulled out from the connection port 2 of the dialyzer 1 by hand, the O-ring band 16 rolls on the outer peripheral surface of the insertion port 6 and It moves from the inner part of the liquid stop annular projection 14 until it comes into contact with the main body-side large diameter part 15, whereby the connection port 2 of the dialyzer 1 is moved.
Of the coupler 5 is released, so that the insertion port 6 of the coupler 5 can be easily pulled out.

On the other hand, as shown in FIG. 3, the connection port 4 of the cleaning device 3 is fixed to the panel 18 with screws 18a.
The opening 4a is projected from the front surface of the panel 18 and forms a circuit side passage 19 behind the panel 18.

The connection port 4 of the cleaning device 3 has a tapered opening 4a whose inner diameter decreases as it goes deeper into the inside, and is located between the circuit side passage 19 of the cleaning device 3 and the opening 4a. A partition 21 having an open passage 20 is formed. As shown in FIG. 4 (a), a recess which circulates to the opening 4a through the liquid flow annular groove 13 of the insertion opening 6 is formed on the lower front surface of the partition 21. A groove channel 22 is formed.

On the other hand, as shown in FIG. 3 or FIG.
Hook pieces 23, 23,... Are formed at required portions (three places in FIG. 4B) on the inner periphery of the distal end of the tapered opening 4a in the connection port 4 of the cleaning device 3. Accordingly, when the insertion port 6 of the coupler 5 is inserted into the opening 4a of the connection port 4, the liquid stopper annular projection 14 of the insertion port 6 comes into contact with the tapered opening 4a and The O-ring band 16 is hooked on the hooking pieces 23 of the connection port 4 while the diameter is reduced, and the O-ring band 16 is hooked on the hooking pieces 23 of the connection port 4.
When the coupler 5 is pushed in while tilting the coupler 5 left and right so that the O-ring band 16 of each of the hooking pieces 23, 23,.
, Can enter the inside of the connection port 4 over all of them, and can be fitted in a state of being engaged with the inner periphery of all the hooking pieces 23, 23,. In the fitted state, the coupler 5 is prevented from falling out of the insertion port 6 against the pressure of the liquid flowing inside the insertion port 6, and continuous and safe flow of the liquid can be secured.

Further, the coupler 5 is connected through the connection port 4 of the cleaning device 3.
When pulling out the insertion opening 6, the coupler 5 is pulled out while tilting the coupler 5 to the left and right so that the O-ring band 16 individually gets over each of the hooking pieces 23, 23... By doing so, it can be easily separated.

The length of the insertion port 6 of the coupler 5 is first determined by the length of the existing connection port 2 of the dialyzer 1.
That is, as shown in FIG. 2, a portion where the O-ring band 16 inserted into the outer periphery of the insertion port 6 of the coupler 5 is in contact with the liquid stop annular projection 14 and an annular recess of the connection port 2 of the dialyzer 1. 2a and the O-ring band 16 is formed so that the O-ring band 16 is locked at a position corresponding to the outer periphery of the small-diameter portion 2b at the distal end of the connection port 2 of the dialyzer 1. To determine the length of the insertion port 6 of the coupler 5.

As shown in FIG. 3, the O-ring band 1 locked on the large-diameter portion 15 on the main body side of the insertion opening 6 of the coupler 5 is provided.
6 are locked inside the hooks 23 of the connection port 4 of the cleaning device 3, and the tip of the insertion port 6 of the coupler 5 is in contact with the front surface of the partition 21 of the connection port 4 of the cleaning device 3. It is defined so that a liquid flow is generated in the gap 24 with some gap 24 therebetween.

Next, the case of cleaning or disinfecting the coupler 5 of this embodiment will be described. In the state where the insertion port 6 of the coupler 5 is inserted into the connection port 4 of the cleaning device 3 as shown in FIG. The liquid flow of the cleaning liquid or the disinfecting liquid (indicated by the dotted line of the arrow) flows through the above-mentioned gap 24 through the circuit-side passage 19 of the cleaning device 3 and the open passage 20 above the partition 21 and flows through the insertion port 6. Circumferentially around the annular groove 13, the concave channel 22
After that, the fluid flows into the internal passage 9 of the insertion opening 6 of the coupler 5. Therefore, the zone in which the cleaning and disinfection is performed in the coupler 5 extends from the apex 14 a of the liquid stopper annular projection 14 in contact with the inner periphery of the connection port 4 of the cleaning device 3 to the liquid flow annular groove 13 of the insertion port 6.
The inner passage 9 of the insertion port 6 around the periphery of the
Is the entire inner circumference.

The insertion port 6 of the thus-cleaned coupler 5
Is inserted into the connection port 2 of the dialyzer 1 shown in FIG. 2, even if the end of the connection port 6 of the dialyzer 1 hits near the tip of the insertion port 6 of the coupler 5, the area is cleaned. Dialysis machine 1
There is no possibility that a cleaning substance may enter the connection port 2 of the first embodiment, so that contamination at the time of insertion of the aseptically sterilized coupler 5 can be prevented and the connection can be performed under aseptic conditions.

(Embodiment 2) In this embodiment, when the coupler 5 having the above configuration is inserted into the connection port 2 of the dialyzer 1 or the connection port 4 of the cleaning device 3 at a medical site, the coupler 5 is inserted. When the O-ring band 16 provided on the outer periphery of the mouthpiece 6 is manually pushed, the entire circumference can be evenly moved.

For this reason, in this embodiment, the slide grip 4 in which the entire circumference of the O-ring band 16 is fitted evenly.
0 is provided, and by pushing the slide grip 40 by hand, the O-ring band 16 can be evenly moved back and forth over the entire circumference. In this embodiment, the coupler 5 and the O-ring band 16 are formed from the same configuration and material as in the above embodiment.

That is, in FIG. 6, the main body of the coupler 5 is formed of an elastic resin material excellent in chemical resistance and heat resistance, for example, a somewhat soft silicon rubber or urethane rubber. A tube connection port 8 for integrally connecting the circuit tube to the circuit tube is provided at the opposite end of the flow path of the insertion port 6, and the tube connection port 8 and the insertion port 6 are internally provided as shown in FIG. It is connected by a passage 9.

The rear end of the coupler 5 of this embodiment has a connection port 8 in which an internal passage 9 is formed straight.
To connect the circuit tube.

The insertion opening 6 of the coupler 5 has a cylindrical shape, and has a distal annular portion 12 formed at the outer periphery of the distal end thereof, and the annular annular portion 13 formed at the inner periphery thereof through a liquid flow annular groove 13 formed at the inner periphery thereof. A liquid stopping annular projection 14 having a diameter larger than that of the portion 12 is formed. The liquid stopper annular projection 14 has an outer diameter that is in close contact with the inner peripheral surface of the connection port 4 of the cleaning device 3 as described later, and extends from the liquid stopper annular projection 14 toward the insertion port 6 by a predetermined width. A main body-side large-diameter portion 15 is formed on the separated outer periphery.

In the insertion opening 6 configured as described above, the outer periphery of the insertion opening 6 is tightened between the liquid stopping annular projection 14 and the large-diameter portion 15 on the main body side so as to protrude and deform inward. A circular O-ring band 16 is mounted.

As the form of the O-ring band 16, in addition to a coil-shaped elastic metal wire formed in a ring shape, a soft rubber material or a resin material having a circular cross section and having elasticity as in the first embodiment is formed in a ring shape. And a silicone rubber tube in which a ring-shaped coiled elastic metal wire is housed in the hollow.

Further, in this embodiment, as shown in FIGS. 6 to 8, the slide grip 40 includes an annular body 41 which fits slidably in the front-rear direction on the outer periphery of the main body side large diameter portion 15 of the coupler 5. And a pressing portion 42 formed by extending a plurality of vertically split shapes forward on the front peripheral portion of the annular body 41.

That is, as shown in FIG. 9, the annular body 41 of the slide grip 40 and the holding portion 42 are integrally formed.
The inner diameter of the annular body 41 is large enough to be loosely fitted to the outer circumference of the main body side large diameter portion 15 of the coupler 5, and the outer circumference of the annular body 41 is formed with an outer peripheral projection 43 for preventing slippage. The holding portion 42 extended to the front peripheral portion of the annular body 41 has a narrowed end 44 at the tip thereof, and has a gap for fitting the O-ring band 16 into the rear portion of the narrowed shape 44 on the inner periphery of the holding portion 42. A fitting groove 46 having an inner peripheral projection 45 formed therein.
The O-ring band 16 is provided in the fitting groove 46.
Is locked.

Further, the holding portion 42 having the above-described structure is provided with a plurality of vertical slits 42a, 42a,... .. And the O-ring band 16 is inserted into the insertion opening 6 of the coupler 5 in response to a change in the diameter of the O-ring band 16 fitted in the fitting groove 46 of the holding portion 42. They are elastically biased in the tightening direction.

With the above configuration, for example, when the coupler 5 is inserted into the connection port 2 of the dialyzer 1, as shown in FIG. The elastic force of the dial 16 is released, and in this state, the coupler 5 is inserted into the outer periphery of the connection port 2 of the dialyzer 1, and
When the slide grip 40 is moved forward by hand as shown in FIG. 10, the O-ring band 16 presses the outer periphery near the inner peripheral projection 17 of the insertion opening 6 of the coupler 5 in the tightening direction. The inner peripheral projection 17 locked in the annular concave portion 2a of the connection port 2 is fastened to prevent the coupler 5 from coming off.

In such movement of the O-ring band 16, since the fitting groove 46 of the slide grip 40 pushes the entire circumference of the O-ring band 16 by moving the slide grip 40 by hand, the slide grip is moved. The O-ring band 16 can be moved evenly by the one-touch operation 40.

As shown in FIG. 6, hooking claws 47 are formed at symmetrical positions on the outer periphery of the pressing portion 42 of the slide grip 40. On the other hand, as shown in FIG. 11 or FIG. 14, the hooking pieces 23, 23 are partially formed at symmetrical positions on the outer periphery of the distal end of the connection port 4 of the cleaning device 3, and the hooking claws 47, 47 of the slide grip 40 are attached to the cleaning device. 3 and then the slide grip 40 is rotated as shown in FIG.
The hooks 47, 47 of the cleaning device 3 are engaged with the hooking pieces 23, 23 of the cleaning device 3, and the coupler 5 connected to the connection port 4 of the cleaning device 3.
Can be stopped.

The cleaning or disinfecting liquid flow for cleaning or disinfecting the coupler 5 of this embodiment passes through the same flow path as in the first embodiment as shown in FIG. In a state where the insertion port 6 is inserted into the connection port 4 of the cleaning device 3, the cleaning liquid or the disinfecting liquid flows through the circuit side passage 19 of the cleaning device 3 and the open flow path 20 above the partitioning portion 21 of the coupler 5. After circulating around the groove 13 and passing through the concave channel 22, it flows into the internal passage 9 of the insertion port 6 of the coupler 5. Therefore, the band in which the cleaning and disinfection is performed in the coupler 5 is defined by the range from the apex of the liquid stopping annular projection 14 in contact with the inner periphery of the connection port 4 of the cleaning device 3 to the peripheral portion of the liquid flow annular groove 13 of the insertion port 6 and the tip annular. The entire circumference of the inner passage 9 of the insertion opening 6 is formed around the portion 12.

In this embodiment, as shown in FIG. 11, a pair of position sensors are provided on the slide grip 40 and the cleaning device 3. Specifically, a diode 48a (see FIG. 13) is fixed to a housing portion 15a provided outside the large-diameter portion 15 on the main body side of the slide grip 40, and is provided near the entrance of the connection port 4 of the cleaning device 3. A magnet 48b (see FIG. 14) is fixedly mounted in the accommodated portion 4a, and when the coupler 5 is inserted into the connection port 4 of the cleaning device 3 and turned, the two diodes 48a and the magnet 48b match. The fitting is performed properly, and a signal issued at that time enables the switch of the cleaning device 3 to be turned on.

Further, the coupler 5 is connected to the connection port 4 of the cleaning device 3.
As described above, it is necessary to insert the hooking claws 47 of the slide grip 40 of the coupler 5 between the hooking pieces 23 of the connection port 4 of the cleaning device 3 as described above. The coupler 5 is inserted into the connection port 4 of the cleaning device 3 by providing a mark 49 (for example, a triangular mark) as shown in FIG. A smooth insertion operation can be performed, and then the slide grip 40 is rotated as shown in FIG.
And the position sensor by the magnet 48b coincides, and the operation can be shifted to the ON operation of the switch of the cleaning device.

[0057]

As described above, the coupler of the present invention inserted into the outer periphery of the connection port of the dialyzer has a liquid flow annular groove and a liquid stop annular projection on the outer periphery of the insertion port formed of an elastic resin material. It has a large-diameter portion on the main body side, and has a simple configuration in which the outer periphery of the insertion opening is fastened and locked by an O-ring band, so that it can be manufactured at a lower cost than a conventional coupler.

Further, the O-ring band does not cause sliding friction between the liquid blocking annular projection formed on the outer periphery near the tip of the insertion opening and the main body side large diameter portion formed on the inner periphery. The O-ring band, which can be rolled by hand, is moved by such simple operability to form a projecting deformation portion on the inner peripheral side of the insertion port by tightening the O-ring band. By fitting and locking the annular concave portion formed in the connection port, the removal of the coupler can be reliably performed.

Further, the coupler of the present invention can be easily inserted into the connection port of the cleaning device with one touch, and in this inserted state, the hooking piece formed on the inner peripheral portion of the distal end of the connection port of the cleaning device. Can lock the O-ring band at the insertion opening of the coupler to prevent the coupler from being removed.

Further, since the zone to be cleaned and disinfected in this cleaning device extends from the top of the liquid stopper annular projection to the entire inner periphery of the internal passage of the insertion port, the coupler thus cleaned is connected to the connection port of the dialyzer. Even when the tip of the coupler insertion port hits the end of the dialyzer connection port during insertion, the connection can be made without contaminants entering the dialyzer, and the coupler can be connected to the dialyzer connection port. It is possible to prevent contamination at the time of standby for performing washing, disinfection, and washing in a connected state, thereby ensuring safety in hygiene management.

Further, in the present invention, a slide grip is provided on the outer periphery of the insertion opening of the coupler, and the O-ring band is fitted into the fitting groove on the inner periphery of the slide grip, so that the slide grip is provided. When moved by hand, the entire circumference of the O-ring band is pushed out evenly,
The one-touch operation of the slide grip allows the O-ring band to be moved evenly.

Further, by providing a mark indicating an appropriate position for inserting the coupler at a position facing the cleaning device and the coupler, a smooth insertion operation becomes possible, and after this insertion, the slide grip is rotated. Then, the engaging hook formed on the slide grip engages with the engaging piece of the cleaning device to prevent the coupler from coming off, and the pair of position sensors provided on the slide grip and the cleaning device match each other. The ON operation of the cleaning device is enabled by the signal, and the aseptic disinfection of the coupler can be performed under an appropriate flow path for the cleaning liquid or the disinfecting liquid.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sterile coupler for connecting a dialyzer according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which a sterile coupler for connecting a dialyzer according to the first embodiment of the present invention is inserted into a connection port of the dialyzer.

FIG. 3 is a longitudinal sectional view showing a state in which the aseptic coupler for connecting a dialyzer according to the first embodiment of the present invention is inserted into a connection port of a cleaning device.

4A is a sectional view taken along the line AA of FIG. 3, and FIG. 4B is a sectional view taken along the line BB of FIG.

FIGS. 5 (a), (b1), (b2), (c1), (c)
2) is a front view and a partial cross-sectional view showing various forms of the O-ring band used in the present invention, and (b2) is C in (b1).
Partial sectional view of the width along the -C arrow line, (c2) is (c1)
FIG. 4 is a partial cross-sectional view of a width along a DD arrow line of FIG.

FIG. 6 is a perspective view of a sterile coupler for connecting a dialyzer according to a second embodiment of the present invention.

FIG. 7 is a side view of the aseptic coupler for connecting a dialyzer according to the second embodiment of the present invention, showing a state where a slide grip is retracted.

FIG. 8 is a side view of the aseptic coupler for connecting a dialyzer according to the second embodiment of the present invention, showing a state where a slide grip is advanced.

FIG. 9 is a sectional view of a sterile coupler for connecting a dialyzer according to a second embodiment of the present invention.

FIG. 10 is a longitudinal sectional view showing a state in which the aseptic coupler for connecting a dialyzer according to the second embodiment of the present invention is connected to a connection port of a cleaning device.

FIG. 11 is a partial cross-sectional view showing a state before a sterile coupler for connecting a dialyzer according to a second embodiment of the present invention is connected to a connection port of a cleaning device.

FIG. 12 is a partial cross-sectional view showing a state in which a sterile coupler for connecting a dialyzer according to the second embodiment of the present invention is connected to a connection port of a cleaning device.

FIG. 13 is a front view of a slide grip of a sterile coupler for connecting a dialyzer according to a second embodiment of the present invention.

FIG. 14 is a front view of a connection port of a cleaning device corresponding to a sterile coupler for connecting a dialyzer according to a second embodiment of the present invention.

FIG. 15 is a side view showing a display example of a mark indicating an appropriate position when the aseptic coupler for connecting a dialyzer according to the second embodiment of the present invention is inserted into a cleaning device.

FIG. 16 is a side view showing a state in which the aseptic coupler for connecting a dialyzer according to the second embodiment of the present invention is inserted into a cleaning device and rotated to a position where a position sensor matches.

FIG. 17 is a longitudinal sectional view showing a state where a conventional coupler is inserted into a connection port of a cleaning device.

FIG. 18 is a longitudinal sectional view showing a contamination zone of a conventional coupler.

FIG. 19 is a longitudinal sectional view showing a state where a conventional coupler faces a connection port of a dialyzer.

FIG. 20 is a longitudinal sectional view showing a state where a conventional coupler is inserted into a connection port of a dialyzer.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... dialyzer, 2 ... connection port of dialyzer, 3 ... washing device, 4 ...
Cleaning device connection port, 5: coupler, 6: insertion port, 7: circuit tube, 8: tube connection port, 9: internal passage, 10 ...
Adapter, 10a ... Projection, 12 ... Annular tip, 13 ...
Liquid flow annular groove, 14: liquid stopping annular projection, 15: large-diameter portion on main body side, 16: O-ring band, 17: inner peripheral projection, 19: passage on circuit side, 20: open passage, 21: partition portion, 22 ... groove channel, 23 ... hook, 40 ... slide grip, 41 ...
Annular body, 42: holding part, 42a: slit, 43: outer peripheral projection, 44: aperture shape, 45: inner peripheral projection, 46: fitting groove, 47: hooking claw, 48a: diode, 48b: magnet, 49: mark .

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[Procedure amendment]

[Submission date] June 25, 2001 (2001.6.2)
5)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

[0015]

In order to achieve the above-mentioned object, a sterile coupler for connecting a dialyzer is inserted around the connection port of a dialysate circuit provided in the dialyzer, while connecting a washing device. In a coupler to be inserted into the inner periphery of the mouth, the coupler has an insertion port formed of an elastic resin material, and is provided with a tube connection port communicated with an internal passage at an opposite end of the insertion port, A liquid-stop annular protrusion is formed on the outer periphery of the insertion port through a liquid-flow annular groove formed near the tip, and the liquid-stop annular protrusion has an outer diameter that is in close contact with the inner peripheral surface of the connection port of the cleaning device. A main body-side large-diameter portion is formed on the outer periphery separated from the liquid stopper annular projection toward the inside of the insertion port, and
As the elastic O-ring band mounted on the outer periphery of the insertion port between the liquid stopping annular projection and the main body side large diameter portion rolls by hand, the inner diameter side turns to the outer diameter side and the It is possible to maintain the tightening force on the part that has rolled on the outer periphery of the insertion opening .

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

Further, when the inserting the insertion port of the coupler to the outer periphery of the dialyzer connection ports, tightened by rolling until it abuts the O-ring bands Ekitome annular protrusion of the insertion port As a result, the inwardly projecting and deformed portion is fitted into an annular recess formed in the connection port of the dialyzer, whereby the coupler can be prevented from being removed .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

Further, the inside diameter of the connection port of the cleaning device is formed in a tapered shape which decreases as it goes inward, and a partition portion having an open passage formed upward in the circuit side passage of the cleaning device is formed. Since the concave channel is formed in the lower part of the front surface of the portion, when the insertion port of the coupler is inserted into the inner periphery of the connection port of the cleaning device, the circuit side passage of the cleaning device and the partition portion While the upper open passage and the liquid flow annular groove at the insertion port of the coupler, the concave groove flow path of the cleaning device and the internal passage of the insertion port of the coupler communicate with each other, the liquid flow is enabled. The O-ring band engaged with the large-diameter portion on the main body side of the insertion opening of the coupler is engaged with the hooking piece because a hooking piece is formed at a required portion on the inner periphery of the opening end of the connection port of the cleaning device. can to perform a retaining of the coupler by being sealed .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

In order to solve the above problems, the sterile coupler for connecting a dialyzer according to the first aspect of the present invention is inserted into the outer periphery of the connection port of the dialyzer while being inserted into the inner circumference of the connection port of the washing device. An elastic O-ring band is attached to the outer periphery of the insertion opening formed in the coupler made of the elastic resin material to be attached, and the outer periphery of the main body side large diameter portion formed in the coupler is slid in the front-rear direction. A slide grip having an annular body movably fitted thereto and a pressing portion formed by extending a plurality of vertically-divided shapes to an outer periphery of an insertion opening of the coupler on a front peripheral portion of the annular body; The O-ring band attached to the outer periphery of the insertion opening is fitted into the fitting groove formed on the inner periphery of the O-ring, and the entire circumference of the O-ring band is evenly moved by manually moving the slide grip back and forth. Can be moved to Characterized in that was.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

The sterile coupler for connecting a dialyzer according to claim 2 of the present invention according to claim 1, wherein a hooking claw is partially formed on the outer periphery of the pressing portion of the slide grip,
By rotating the slide grip after the hooking claw is inserted into a joining state in which the hooking pieces are partially formed on the outer periphery of the distal end of the connection port of the cleaning device, the hooking claw of the holding portion is moved. The coupler connected to the cleaning device is prevented from being pulled out by being locked to a hooking piece of the cleaning device.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

According to a third aspect of the present invention, there is provided the sterile coupler for connecting a dialyzer according to the first aspect, wherein the slide grip and the cleaning device are provided with a pair of position sensors, and a connection port of the cleaning device is provided. When the coupler is inserted, the cleaning device can be turned on by a signal that matches the position sensors.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

Further, the sterile coupler for connecting a dialyzer according to claim 4 of the present invention is characterized in that, in claim 1, a mark indicating an appropriate position when the coupler is inserted into a connection port of the cleaning device is attached to the cleaning device. And a coupler facing the coupler.

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 3H017 HA10 3J106 AB01 BA02 BB01 BB07 BC04 BD01 BE25 BE29 BE33 BE40 CA01 EA03 EB02 EC01 EC06 ED12 EE11 EE12 EF03 EF04 EF05 EF07 4C058 AA12 BB07 CC02 CC06 EE0 JJ06 GG04 NN14 PP14 PP16

Claims (7)

[Claims] 1. A coupler which is inserted into an outer periphery of a connection port of a dialysate circuit provided in a dialyzer and is inserted into an inner periphery of a connection port of a washing device, wherein the coupler is formed of an elastic resin material. A tube connection port having an insertion port and communicating with an internal passage at the opposite end of the insertion port is provided, and an outer periphery of the insertion port is provided via a liquid flow annular groove formed near the tip. A liquid stopper annular projection is formed, the liquid stopper annular projection has an outer diameter that is in close contact with the inner peripheral surface of the connection port of the cleaning device, and is provided on an outer periphery separated from the liquid stopper annular projection toward the inside of the insertion port. Along with the main body-side large-diameter portion being formed, the elastic O-ring band attached to the outer periphery of the insertion opening between the liquid stopping annular projection and the main body-side large-diameter portion is manually rolled. The inner diameter side is rotated to the outer diameter side to maintain the tightening force on the portion that has rolled around the outer periphery of the insertion port. Dialyzer connection sterile coupler, characterized in that the. 2. When the insertion port of the coupler is inserted around the outer periphery of the connection port of the dialyzer, the O-ring band is rolled and tightened until it comes into contact with the annular stopper of the insertion port. 2. The dialyzer connection according to claim 1, wherein the coupler is prevented from being pulled out by fitting the portion that is deformed inwardly into an annular recess formed in the connection port of the dialyzer. For aseptic coupler. 3. A partition portion having an inner diameter of a connection port of the cleaning device that is tapered so as to decrease as it goes inward, a partition portion having an open passage above the circuit side passage of the cleaning device, and the partition portion. Since the concave channel is formed in the lower part of the front surface of the portion, when the insertion port of the coupler is inserted into the inner periphery of the connection port of the cleaning device, the circuit side passage of the cleaning device and the partition portion While the upper open passage and the liquid flow annular groove at the insertion port of the coupler, the concave groove flow path of the cleaning device and the internal passage of the insertion port of the coupler communicate with each other, the liquid flow is enabled. The O-ring band engaged with the large-diameter portion on the main body side of the insertion opening of the coupler is engaged with the hooking piece because a hooking piece is formed at a required portion on the inner periphery of the opening end of the connection port of the cleaning device. The fact that the coupler is prevented from being pulled out by being stopped Dialyzer connecting sterile coupler according to claim 1,. 4. A coupler made of an elastic resin material, which is inserted into the outer periphery of the connection port of the dialyzer while being inserted into the inner periphery of the connection port of the washing device, has elasticity on the outer periphery of the insertion port formed in the coupler made of an elastic resin material. O
A ring band is attached, and an annular body that slidably fits in the front-rear direction around the outer circumference of the main body-side large-diameter portion formed in the coupler, and a plurality of vertically split shapes are formed on the front peripheral portion of the annular body. An O-ring band, comprising a slide grip having a holding portion extending to the outer periphery of the insertion opening of the coupler, and being fitted to the outer periphery of the insertion opening in a fitting groove formed on the inner periphery of the holding portion. Wherein the entire circumference of the O-ring band can be evenly moved by moving the slide grip back and forth with a hand. 5. A hooking claw is partially formed on an outer periphery of a holding portion of said slide grip, and said hooking claw is inserted between hooking pieces formed partially on an outer periphery of a distal end of a connection port of said cleaning device. By rotating the slide grip from the joined state, the catching claw of the pressing portion is locked to a locking piece of the cleaning device, thereby preventing the coupler connected to the cleaning device from being pulled out. 5. The aseptic coupler for connecting a dialyzer according to claim 4, wherein: 6. A pair of position sensors are provided for the slide grip and the cleaning device, and when the coupler is inserted into a connection port of the cleaning device, the position sensors are matched with each other by a signal matching each other. 5. The aseptic coupler for dialyzer connection according to claim 4, wherein the ON operation of the device is enabled. 7. A mark indicating an appropriate position when the coupler is inserted into a connection port of the cleaning device is provided at a position facing the cleaning device and the coupler.
The aseptic coupler for connecting a dialyzer according to the above.