KR102627091B1 - Multiport for medical device - Google Patents

Abstract

A multiport valve (10) is disclosed comprising at least three ports (60, 70, 80) disposed circumferentially around a lower section. The upper section 20 is fitted on the lower section 30 and has an initial position and a depressed position. The inner ring 40 is connected in a first position to a first of the at least three ports 60, 70, 80 and to a second of the at least three ports 60, 70, 80, and in a second position to the The first of the at least three ports 60, 70, 80 is movably arranged within the lower section 30 to connect with the third of the at least three ports 60, 70, 80.

Description

Multiport for medical devices {MULTIPORT FOR MEDICAL DEVICE}

The present invention relates to a multiport valve including a plurality of ports. In particular, the multiport valve can be used in medical devices, such as devices for peritoneal dialysis.

Peritoneal dialysis is a treatment for patients with severe chronic kidney disease. This procedure uses the patient's peritoneum within the abdomen as a membrane across which fluid and dissolved substances are exchanged with blood. Dissolved substances include electrolytes, urea, glucose, albumin, and other small molecules. Fluid is introduced through a permanent catheter in the abdomen and drained either nightly while the patient is sleeping, or through regular exchanges throughout the day. Regular discharge throughout the day is called “continuous ambulatory peritoneal dialysis”, abbreviated as CAPD. Peritoneal dialysis can be used as a variation on hemodialysis, but is less commonly used in many countries. It has comparable risks to hemodialysis, but costs significantly less. A key advantage of CAPD is the ability to carry out procedures without the patient needing to visit a medical facility, such as a hospital or doctor's surgery. The main problem with peritoneal dialysis is infection due to the permanent presence of the catheter in the abdomen.

One product used for continuous peritoneal dialysis is the StaySafe® medical device, commercially available from Fresenius Medical Care.

A device for continuous peritoneal dialysis is disclosed in international patent application WO 2011/113615 A1 (assigned to Fresenius Medical Care Deutschland GmbH). This application discloses a device having a connector connected to a catheter, a container containing an osmotically activated solution and connected to the catheter, a dispenser, and a hose system. The device has a semi-permeable membrane made of cellulose membrane for exchange of fluids.

Another device for continuous peritoneal dialysis is disclosed in International Patent Application WO 2002/032479 A2 (Levin), which has an abdominal sac containing dialysate. The peritoneal bladder has a semi-permeable membrane and is held in the abdominal region of the patient's body to receive unconcentrated urine through the semi-permeable membrane wall without allowing dialysate to drain through the wall of the abdominal bladder. The device further includes a conduit for passing unconcentrated urine from the abdominal sac through the patient's intestines to the discharge port.

Another peritoneal dialysis system is taught in European patent application EP 2 623 139 A1, which includes a circuit for measuring the conductivity of fluid introduced into the peritoneal cavity.

All applications in the prior art describe a valve having multiple ports for switching the connection of a catheter introduced into the abdomen between a connector tube to a sac containing electrolyte fluid and another bag for collecting feces. in need. These multiport valves are a potential source of infection as they are located outside the body, connected to a catheter that is introduced into the patient's abdomen. Accordingly, there is a need to manufacture and operate in a manner that substantially prevents infection from being introduced into the body.

This disclosure teaches a multiport valve having at least three ports. In the case of a device for CAPD, one of the ports is connected to a catheter that is introduced into the abdomen, another of the ports is connected to a fluid bag containing electrolyte fluid, and another of the ports is connected to a fluid bag containing feces. Connected to the excrement bag. The three ports are arranged circumferentially around the lower section of the multiport valve. On the lower section an upper section is fitted, which has two positions. The initial position is used during resting or transport of the multiport valve before it is used in the CAPD device. The upper section can be pushed down into a pressed position for use.

An inner ring is disposed within the lower section of the multiport valve. This inner ring is designed to move into at least two positions. In a first position, a first of the ports is coupled to a second of the ports, and in a second position, the same first of the ports is coupled to a third of the ports. The inner ring can be rotated using a protruding element on the outer side of the upper section.

The inner ring has a seal on its outer side, and pressing the upper section of the multiport valve from the initial position to the rest position enables a better seal for the multiport valve. The seal in the initial position is not as compressed as the seal in the depressed position.

These two positions allow for easy transport for the multiport valve in that the inner ring is sealed during transport. In use of the multiport valve within the device, the connection is made between two of the ports, thereby allowing fluid to flow between the two of the ports. Accordingly, rotation of the upper section can position the device to allow electrolyte fluid to pass into or to allow waste to be removed from the patient's abdomen.

The upper section has a rim fitting within the lower section. The upper section has two extension elements of different lengths, which match corresponding notches on the lower section. In the initial position, the first of the extension elements latches into a first corresponding position on the inner side of the lower section. A second of the extension elements latches into a second position on the inner side of the lower section and retains the upper section in the depressed position within the multiport valve.

In one aspect, the multiport valve further includes a guidance rail for pressing the upper section into the lower section as the upper section is turned in a clockwise manner. Additionally, the multiport valve includes at least one raster element engaging the protrusion to prevent rotation of the upper section in a second (counterclockwise) direction, but allow rotation of the upper section in a first (clockwise) direction. can do.

The multiport valve is provided with a seal to prevent bacteria or viruses that may infect the patient from being introduced into the multiport valve.

The multiport valve can be used, for example, in a drainage system for continuous peritoneal dialysis.

1 is a perspective view of a first embodiment of a multiport valve of the present disclosure;
2A is a first top view of a multiport valve with a fluid tube connected between an input port and a catheter port;
2B is a top view of a second position of the inner tube connected between the input port and the catheter port;
3 is a cross-sectional view of a first embodiment of a multiport valve in a first initial or rest position;
Figure 4 is a cross-sectional view of a first embodiment of a multiport valve with the upper section in the depressed or actuated position;
Figure 5 shows an example of the inner ring of a multiport valve with the inner tube visible;
Figure 6 is a diagram showing an example of a continuous peritoneal dialysis system in which a multiport valve can be used;
7 is a perspective view of a second embodiment of a multiport valve;
Figure 8 is a plan view of a second embodiment of a multiport valve.

1 shows a perspective view of a multiport valve 10 from a first perspective of the present disclosure. The multiport valve (10) is substantially cylindrical in nature and has an upper section (20) mounted on a lower section (30). A plurality of ports 60, 70, 80 are connected around the circumference of the wall 34 of the lower section 30. In the example shown in Figure 1, three ports 60, 70, and 80 are shown. The input port 60 is connected via a connector 65 to a bag containing electrolyte solution for, for example, dialysis (shown in Figure 6). The output port 70 is connected to a bag (not shown) for collecting excrement through a connector 75. The catheter port 80 may be connected to a catheter 150 introduced into the patient's body. Catheter 150 is not shown in Figure 1, but is visible in the system shown in Figure 6.

The multiport valve 10 is made of plastic such as polyolefin, such as polypropylene or polycarbonate. The upper section 20 is rotatable about the lower section 30 and fits snugly over the lower section 30 so that the rim 26 of the upper section 20 fits over the top of the wall 34 of the lower section 30. Fit appropriately (best shown in Figures 3 and 4). On the upper surface 21 , an element 28 protrudes from the upper surface 21 , which is used by the patient or medical professional to rotate the upper section 20 around the lower section 30 . In the first view element 28 has two arrows, which may be used by the patient or medical professional to align the upper section with the ports 60, 70, 80. The upper section 20 may be pressed into the lower section 30 to actuate the multiport valve 10 as described below. Additionally, the upper surface 21 has a plurality of markings indicating the various positions that the multiport valve can assume and their associated functions.

2A and 2B show a multiport valve (10) with the upper section (20) removed to reveal an inner ring (40) that fits rigidly within the lower section (30) and is rotatable within the lower section (20). A floor plan is shown. The inner ring 40 includes ring elements 48 forming a tubular passageway 46 . This can be seen more clearly in Figure 5. Passage 46 allows fluid to pass from cathode port 80 to input port 60 as shown in FIG. 2A or from output port 70 to cathode port 80 as shown in FIG. 2B. Designed to allow fluid to pass through. The passageway 46 can be rotated between either of two positions by moving the element 28 on the upper surface 21 of the multiport valve 10.

The inner ring 40 is shown in more detail in FIG. 5 . It can be seen that the inner ring 40 has a seal 44 mounted on the outer circumference of the inner ring 40. The seal 44 is made of, for example, an elastomeric material and allows sealing the internal workings of the multiport valve 10 from the environment. In particular, because the seal 44 is between the inner portion of the wall of the lower section 30 and the inner ring 44, the seal 44 creates a passage 46 through which infectious agents can enter the body through the catheter port 80. ) to ensure that infection does not reach the area. The inner ring 40 has two notches 45 on the inner side 41 to engage latches on the lower side of the upper surface 20, as described below. Two notches 45 are located diametrically opposite each other on the upper rim. The two notches 45 allow the upper section 20 to be pressed into the operating position (described below) and the inner ring 40 rotated clockwise by the user using elements 28 on the upper surface 21 of the upper section. When positioned, it engages with the protrusions on the lower surface of the upper section 20. Accordingly, the inner ring 40 can only be turned when the upper section 20 is in the depressed or actuated position. This ensures that the fluid passageway is not accidentally exposed during transport of the multiport valve 10.

3 and 4 show cross-sectional views of the multiport valve 10 in two different positions. Figure 3 shows the multiport valve 10 from a first perspective in a resting or moving position. This rest position is engaged after manufacturing the multiport valve 10 and before the multiport valve 10 is put into use. Figure 4 shows the pressed or actuated position of the multiport valve 10. In this operating position, the upper section 20 of the multiport valve 10 is depressed or pushed down.

3 and 4, it can be seen that the upper section 20 extends into the cavity formed by the lower section 30 and has latch lips 221, 231 that engage corresponding positions 42, 43 on the lower section 30. It has two extension elements 22, 23 on its lower surface which act as latches. In the rest or initial position shown in Figure 3, the latch 221 on the extension element 22 latches into the first of the positions 42 and is held in place. Upon pressing of the upper section 20, the latch 231 on the extension element 23 lowers the inner part 41 and then latches into a position in the second of the positions 43. Additionally, pressing the upper section 20 pushes the inner ring 40 down into the inner part of the lower section 30 .

Additionally, the upper section 20 has a protruding element 27 located proximate the rim 26 on the lower side of the upper portion. The protruding element 27 and the rim 26 form a cavity into which the wall 34 of the lower section 26 fits. Upon pressing the upper section 20, the upper part of the wall 34 moves into the cavity. The protruding element 27 protrudes onto the top of the inner ring 40 and, when pressed, pushes the inner ring 40 down into the lower section 30 . By comparison to the lower part of the inner ring 40 shown in Figures 3 and 4, it can be seen that in the rest position of Figure 3 there is a slight gap between the lower part of the inner ring 40 and the lower section 30, while in Figure 4 There is virtually no gap.

The walls of the inner ring 40 and the walls 34 of the lower section 30 are inclined at a slight angle. This causes the seal 44 on the outer circumference of the inner ring 40 (shown in Figure 5) to be compressed more than when the upper section 20 is pressed. As a result, the seal 44 seals the interior of the multiport valve 10 better. That is, in the rest position the seal 44 has only a slight compressive force exerted on the seal 44, but in the actuated position there is a much greater force exerted on the seal 44.

The seal 44 may lose at least some of its elasticity when compressed for long periods of time. Since the time between manufacture of the multiport valve and use of the multiport valve is unknown, there is a risk that the seal 44 may lose at least some of its sealing properties if the time before use is too long. The multiport valve 10 of the present disclosure reduces the risk of improper sealing to the interior of the multiport valve 10.

FIG. 6 shows an overview of a continuous peritoneal dialysis system 100 including a fecal bag 110 connected to the output port 70 of the multiport valve 10 by a connector 120. The dialysate bag 130 is connected to the input port 60 of the multiport valve 10 through the connector 140. Catheter 150 is connected to a bag within abdomen 170 of patient 160. The catheter 150 is connected to the catheter 80 of the multiport valve 10.

By using the multiport valve in the continuous peritoneal dialysis system 100 of FIG. 6, the simple multiport valve 10 can be deployed and sterilized and used by patients outside the hospital.

Figure 7 shows a second view of the multiport valve 10. Reference numbers used in Figure 7 are the same as those used in other figures for the same elements. A second aspect of the multiport valve 10 is that the pressing of the upper section 20 into the pressed position (or actuated position) is not carried out by pressing the upper section 20 on the lower section 30. It is different from The multiport valve 10 in this second aspect has a guide rail 710 on the inside of the lower section 30 which engages with a projection 70 on the upper section 20 . The guide rail 710 is located in a first position at a greater distance 720a from the bottom of the lower section 30 than at a second position 710c located at a shorter distance 720c from the bottom of the lower section 30. It has (710a). Between the first position 710a and the second position 710c, there is an intermediate section 720b that slopes downward and adjusts the distance from the first position 710a to the second position 710c.

In the rest position, the protrusion 700 and the guide rail 710 in the first position 720a cooperate such that the upper section 20 is spaced a distance from the lower section 30. In the pressed or actuated position, the protrusion 700 and guide rail 710 cooperate to press the upper section 20 onto the lower section 30. The transition from the first position 710a to the second position 710c is performed by rotating the upper section 20 clockwise relative to the lower section 30. During this rotation, which is approximately 20° but does not limit the invention, the protrusion 700 is forced down by the guide rail 710 in the middle section 710b to press against the upper section 30. The pressing of the upper section 30 takes place only within the middle section 710b. Thereafter, another rotation of the upper section 30 does not result in any further depression as the second distance 720 remains constant throughout the remainder of the rotation period.

Figure 7 shows a raster element 740 located on the lower part of the lower section 30 and an associated projection 750 located on the lower side of the inner ring 40. Within the multiport valve 10 there are three raster elements 740 spaced approximately at equal radii, these raster elements 740 being such that the upper section 20 is semi-circular around the lower section 30 for reasons explained below. It is used to stop clockwise rotation.

Raster element 740 and its associated protrusion 750 have one wedge-shaped edge to slide against one another when upper section 20 is turned clockwise. The raster elements 740 and their associated protrusions 750 have parallel oriented faces adjacent to each other to prevent further rotation if the upper section 20 is rotated counterclockwise.

Figure 8 shows a plan view of the top surface 21 of the upper part of the multiport valve 10 from a second perspective. There are five markings 810, 820, 830, 840, 850 on the upper surface 21 along with a pointer 865 and an arrow 860. Arrow 860 should be turned clockwise. The multiport valve 10 is transported to the initial position 800 with the pointer 865 pointing to the initial position 800 as shown in FIG. 8 .

The pointer 865 is turned clockwise to the first marking 810. The first marking 810 corresponds to the position where the guide rail 710 begins the second section 710c and ends the middle section 710b. That is, turning the upper section 20 in the direction of arrow 860 from the initial position 800 to the first marking 810 means turning the upper section 20 from the initial position at the first marking 810 to the pressed or actuated position. ) results in the pressing of . At this time, the catheter 150 may be connected to the patient.

The second marking 820 has an inner ring 40 positioned so that the catheter 80 is connected to the output 70 so that fluid from the bag on the patient's abdomen drains into the excrement bag 110 connected to the output 70. This is the position (shown in Figure 6). The third marking 830 is the position where the inner ring 40 is placed so that the bag on the patient's abdomen can be rinsed. Finally, the fourth marking 840 is the location where the input port 60 is connected to the catheter to allow dialysate from the solution bag 130 to be delivered to the bag on the patient's abdomen. The second marking 820, the third marking 830, and the fourth marking 840 each have one of the raster elements 840 shown in FIG. 4 combined with the protrusion 750 so that the upper section 20 is shaped like an arrow. It is arranged to ensure that it cannot be rotated counterclockwise with respect to the direction indicated by 850.

Finally, pointer 865 turns to fourth marking 840, at which point there is no fluid connection between catheter 150 and either input port 60 or output port 70. The multiport valve 80 can be separated from the patient.

It will be understood that the multiport valve 10 of the present disclosure may be applied to other medical fields.

10: Multiport valve
20: upper section
21: upper surface
22: Extension element
221: latch lip
23: Extension element
231: latch lip
26: Rim
27: Extruded elements
28: element
30: lower section
34: wall
40: inner ring
41: medial part
42: Location
43: Location
44: seal
45: notch
46; tubular passage
48: ring element
60: input port
65: connector
70: output port
75: connector
80: catheter port
100: Continuous peritoneal dialysis system
110: excrement bag
120: connector
130: solution bag
140: connector
150: catheter
160: patient
170: abdomen
700: protrusion
710: Guide rail
710a: first position
710b: middle section
710c: second position
720a: longer range
720c: Shorter distance sections
740: Raster element
750: protrusion
800: initial position
810: first marking
820: Second marking
830: Third marking
840: Fourth marking
850: Fifth marking
860: arrow
865: pointer

Claims (12)

In the multiport valve (10),
at least three ports (60, 70, 80) arranged circumferentially around the lower section;
an upper section (20) fitted on the lower section (30) and having an initial position and a depressed position; and
In a first position, a first of the at least three ports (60, 70, 80) is connected to a second of the at least three ports (60, 70, 80), and in a second position, the at least three ports (60) , 70, 80), the first of which is connected to the third of the at least three ports (60, 70, 80).
Including,
The inner ring (40) is turnable against pressing of the upper section (20),
Multiport valve.
According to paragraph 1,
The upper section 20 and the lower section 30 are cylindrical,
Multiport valve.
According to paragraph 1,
One of the at least three ports (60, 70, 80) is connectable to a catheter (150) introduced into the patient (160),
Multiport valve.
According to paragraph 1,
One of the at least three ports (60, 70, 80) is connectable to the excrement bag (110) by a connector (120),
Multiport valve.
According to paragraph 1,
One of the at least three ports (60, 70, 80) is connectable to the solution bag (130) through a connector (140),
Multiport valve.
According to paragraph 1,
The upper section (20) has a rim (22) fitting to the lower section (30).
Multiport valve.
According to paragraph 1,
The upper section (20) has at least one extension element (22, 23) matching the position (42, 43) of the lower section (30), wherein the position (42, 43) corresponds to the at least one extension. formed corresponding to the latch lips 221, 232 of the elements 22, 23,
Multiport valve.
According to paragraph 1,
The upper section (20) has two extension elements (22, 23) of different lengths,
In the initial position the first of the two extension elements 22, 23 latches into the first position 42 on the inner part 41 and in the depressed position the second of the two extension elements 22, 23. latching into the second position 43 on the inner part 41,
Multiport valve.
According to paragraph 1,
The inner ring (40) has a seal (44) on its outer side,
Multiport valve.
According to paragraph 1,
further comprising a guide rail (710) for pressing the upper section (20) into the lower section (30),
Multiport valve.
According to paragraph 1,
At least one raster element 740 cooperating with the protrusion 750 to prevent rotation of the upper section 20 in a second direction, but allow rotation of the upper section 20 in a first direction. Containing more,
Multiport valve.
The multiport valve (10) of any one of claims 1 to 11, a first bag (110, 130) connected to the first of the at least three ports (60, 70, 80), and the at least three ports (110, 130) Comprising a catheter (85, 150) connected to the second of the ports (60, 70, 80),
Drainage system (100).

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