Multi-channel compatible connecting device of automatic peritoneal dialysis machine

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an automatic peritoneal dialysis machine pipeline multi-channel conversion connecting device which comprises a compatible connecting structure, a multi-channel connecting structure and a catheter connecting structure. The multi-channel connecting structure comprises at least two liquid inlets and a liquid outlet, the liquid inlets are connected with one end of the guide pipe in an inserted mode, the other end of the guide pipe is fixedly connected with the external thread connector, the guide pipe is provided with a switch clamp, the guide pipe connecting structure comprises a liquid outlet guide pipe and a guide pipe connector part, one end of the liquid outlet guide pipe is connected with the liquid outlet in an inserted mode, and the other end of the guide pipe is fixedly connected with the external thread connector part. The other end of the liquid outlet catheter is fixedly connected with one end of the catheter connector part, the external thread connector is detachably connected with a pipeline connector of a 2L peritoneal dialysis drainage bag, and the other end of the catheter connector part is detachably connected with a pipeline connector of a peritoneal dialysis machine. And artificial pollution is easily caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a kind of multi-channel compatible connecting device of automatic peritoneal dialysis machine. BACKGROUND

[0002] Peritoneal dialysis machine is the medical instrument used in the process of filling dialysate into the abdominal cavity of patient, using peritoneum to complete dialysis, and then leading liquid out of abdominal cavity, for clinical automatic peritoneal dialysis treatment for patients with renal failure. Since the concept of automated peritoneal dialysis (APD) was proposed in the 1960s, APD machine has been introduced since 1990s, and APD technology has developed rapidly. It is convenient to use, easy to adjust dialysis dose, and patients can arrange daily activities or participate in work as much as possible without any constraints during the day, so that more peritoneal dialysis patients accept its advantages such as returning to society. The classification of automatic peritoneal dialysis machine can be divided into pressure control type, gravity control type and mixed control type according to the power source of filling and leading out. Among them, the pressure control type APD machine uses different power sources such as pneumatic pump, peristaltic pump and piston pump, and the filling and leading out process does not depend on gravity, that is, there is no requirement for the placement height of peritoneal dialysis bag. Therefore, the pressure control type peritoneal dialysis machine works more stably, and the ultrafiltration calculation of peritoneal dialysis treatment is more accurate.

[0003] APD has been widely used in European and American countries. The usage rate of APD in the United States, Canada, Australia, the United Kingdom and other countries is more than 50%, and the proportion in developing countries is significantly lower (15.8%). China started late and developed unevenly. According to the report of Chinese National Renal Data System (CNRDS, www.cnrds.net) in 2019, the usage rate of APD in China is only 1.9%.

[0004] At present, the most commonly used hospital clinical application is the pressure control type peritoneal dialysis machine of Baxter brand. The equipment of the largest size and other mainstream brands of clinical dialysis treatment equipment used are 5L peritoneal dialysis liquid large-capacity straight-in type pipe interface module, which can only be matched with the straight-in type 5L peritoneal dialysis liquid special drainage bag of Baxter brand, and cannot be matched with the small-capacity internal thread type dialysis equipment and drainage bag of non-Baxter brand 2L peritoneal dialysis liquid. Because the price of the equipment of Baxter brand and the 5L peritoneal dialysis liquid matching drainage bag is expensive, most of which are purchased and used by hospitals for clinical treatment; because the body size of patients in China is smaller than that of patients in Europe and the United States, most of the patients in China purchase and use domestic peritoneal dialysis machines and 2L peritoneal dialysis liquid drainage bags with internal thread type interface at home. Because the interface of these 2L peritoneal dialysis liquid drainage bags is of internal thread type, it cannot be compatible with the 5L mainstream pressure control peritoneal dialysis machine used in clinical treatment, and the 5L peritoneal dialysis machine is inserted and connected, not threaded; because of the lack of 5L peritoneal dialysis liquid drainage bag, some local hospitals use pressure type automatic peritoneal dialysis machine, and after disinfection, the internal thread type interface of the liquid inlet pipe of the 2L peritoneal dialysis liquid drainage bag is cut off and spliced into the 5L peritoneal dialysis machine pipeline. This operation destroys the sealing of the interface between the dialysis machine and the drainage bag, and brings great risk of environmental bacterial infection. Peritonitis caused by infection of peritoneal dialysis pipeline is fatal to peritoneal dialysis patients.

[0005] Please refer to the attached Figure 6 The 2L peritoneal dialysis liquid drainage bag pipeline module 5 of the prior art includes a 2L peritoneal dialysis liquid drainage bag 51, a 2L peritoneal dialysis liquid drainage bag conduit 52, a 2L peritoneal dialysis liquid drainage bag interface 53 and a 2L peritoneal dialysis liquid drainage bag interface protection cover 54 connected in sequence through a pipeline, wherein the 2L peritoneal dialysis liquid drainage bag interface 53 is an internal thread type connection.

[0006] Please refer to Figure 7 The peritoneal dialysis machine pipeline module 4 of the prior art includes a peritoneal dialysis machine 41, a peritoneal dialysis machine pipeline 42 and a peritoneal dialysis machine pipeline interface 43 connected in sequence through a pipeline; wherein the peritoneal dialysis machine pipeline interface 43 is a straight-in type connection.

[0007] Please refer to Figure 8The prior art compatible connection structure is to open the protective cover 54 of the 2L peritoneal dialysis liquid drainage bag interface, expose the 2L peritoneal dialysis liquid drainage bag interface 53, and then match the outer threaded interface 16 of the compatible connection structure 1, rotate the two interfaces, and tightly combine the 2L peritoneal dialysis liquid drainage bag module 5 with the compatible connection structure 1, so that no liquid leakage occurs; when connected with the peritoneal dialysis machine pipeline module 4, the catheter interface part 32 of the catheter connection structure 3 is directly inserted into the catheter interface part 32, so that the peritoneal dialysis liquid can pass through the 2L peritoneal dialysis liquid drainage bag catheter 52, be connected with the outer threaded interface 16 through the threaded connection of the 2L peritoneal dialysis liquid drainage bag interface 53 and the outer threaded interface 16, enter the compatible connection structure 1, pass through the catheter interface part 32 in the catheter connection structure 3 and the plug-in connection of the peritoneal dialysis machine pipeline interface 43, pass through the peritoneal dialysis machine pipeline 42 into the peritoneal dialysis machine 41, and then pass through the pressure into the patient's body and be discharged, to complete the entire dialysis process, and each time only one 2L peritoneal dialysis liquid can be connected.

[0008] The patent document with the patent number 202122879713.8 applied by the inventor team discloses a compatible connection device of an automatic peritoneal dialysis machine, and partially solves the incompatibility problem; however, the compatible connection device can only solve the compatibility problem of 2L and 5L in clinical use, but 8L and above peritoneal dialysis liquid, that is, more than 4 bags of 2L peritoneal dialysis liquid, is often used in clinical use, if each time only one 2L peritoneal dialysis liquid can be connected, the used 2L peritoneal dialysis liquid bag needs to be repeatedly disconnected and a new 2L peritoneal dialysis liquid needs to be connected, which is extremely easy to be artificially contaminated and causes peritonitis, therefore, some problems still exist, and a multi-channel compatible connection device needs to be further designed to solve the above problems of 2L peritoneal dialysis liquid compatible with 8L and above peritoneal dialysis liquid. Practical new type content

[0009] In order to solve the technical problem that the used 2L peritoneal dialysis liquid bag needs to be repeatedly disconnected and a new 2L peritoneal dialysis liquid needs to be connected when 2L peritoneal dialysis liquid is compatible with 8L and above peritoneal dialysis liquid, the utility model provides a multi-channel compatible connection device of an automatic peritoneal dialysis machine, which improves the structure design to solve the problem that the used 2L peritoneal dialysis liquid bag needs to be repeatedly disconnected and a new 2L peritoneal dialysis liquid needs to be connected, realizes the compatibility of 8L and above large-capacity peritoneal dialysis liquid, and is convenient to operate and safe to use.

[0010] In order to achieve the above purpose, the technical scheme adopted by the utility model to solve the technical problem is:

[0011] The application discloses a compatible connecting device of an automatic peritoneal dialysis machine, which comprises a compatible connecting structure, a multi-channel connecting structure and a catheter connecting structure, wherein the compatible connecting structure comprises a catheter, a switch clamp and an external thread interface; the multi-channel connecting structure comprises at least two liquid inlet ports and one liquid outlet port; the liquid inlet port is inserted into one end of the catheter; the other end of the catheter is fixedly connected with the external thread interface; the catheter is provided with the switch clamp; the catheter connecting structure comprises an outlet catheter and a catheter interface part; one end of the outlet catheter is inserted into the liquid outlet port; the other end of the outlet catheter is fixedly connected with one end of the catheter interface part; the external thread interface is detachably connected with a 2L peritoneal dialysis liquid drainage bag pipeline interface; and the other end of the catheter interface part is detachably connected with a peritoneal dialysis machine pipeline interface.

[0012] Further, the external thread interface is provided with a protective cover used for sealing the external thread interface after being connected with the 2L peritoneal dialysis liquid drainage bag pipeline interface, so as to protect the external thread interface from being polluted; the protective cover comprises a reinforcing ring and a protrusion used for increasing friction; the reinforcing ring is fixedly arranged on the outside of the port of the protective cover; the protrusion is arranged on the axial side of the protective cover; and one end of the protrusion is fixedly connected with the reinforcing ring.

[0013] Further, the external thread interface, the protective cover, the reinforcing ring and the protrusion are integrally formed.

[0014] Further, the protrusion is rectangular and at least one.

[0015] Further, the compatible connecting structure further comprises a sealing cover used for protecting the external thread interface from being polluted before the external thread interface is connected with the 2L peritoneal dialysis liquid drainage bag pipeline interface; and the sealing cover is threadedly connected with the external thread interface.

[0016] Further, the catheter connecting structure further comprises a pull cover used for protecting the catheter interface part from being polluted before the catheter interface part is connected with the peritoneal dialysis machine pipeline interface; and the pull cover is detachably connected with the catheter interface part.

[0017] Further, the centers of the cross sections of the catheter, the external thread interface and the protective cover are located on the same line.

[0018] Further, along the line connecting the centers of the cross sections of the compatible connecting structure, the multi-channel connecting structure and the catheter connecting structure, drainage pipelines which are in communication with each other and are kept sealed are formed.

[0019] Further, the external thread interface, the protective cover, the reinforcing ring and the protrusion are members made of an elastic polymer material TPE.

[0020] Compared with the prior art, the automatic peritoneal dialysis machine compatible connecting device has the beneficial effects that:

[0021] 1、 The utility model discloses an improved structure design, can solve the compatible problem of 2L peritoneal dialysis liquid and 8L or large capacity peritoneal dialysis liquid completely, and convenient operation, safe use can satisfy different prescription needs, because of the use of compatible pipe, dialysis treatment prescription can be more flexible, no longer be limited to only use 2L or 5L peritoneal dialysis liquid, can be combined according to need to a variety of treatment amount, reduce 5L, 8L or higher price peritoneal dialysis liquid, more use the 2L peritoneal dialysis liquid of lower price, thereby reduce the medical expense expenditure of patient.

[0022] 2、 The utility model discloses an improved structure design, improves the use safety. Through setting up multichannel connecting structure, can be inserted simultaneously the 2L peritoneal dialysis liquid of multiple bags, reduces the 2L peritoneal dialysis liquid bag of user's repeated disconnection use and reconnection new 2L peritoneal dialysis liquid, very easy to bring artificial pollution, leads to the risk of peritonitis, guarantees patient safety.

[0023] 3、 The utility model discloses an improved structure design, improves the compatibility. The pipe diameter and the thread of the interface of the 2L peritoneal dialysis liquid drainage bag on the market whether it is the product of domestic or joint venture enterprise are basically identical, so the design of the adapter of the utility model can well coincide with the interface of the 2L peritoneal dialysis liquid drainage bag of different enterprise production.

[0024] 4、 The utility model discloses the first protruding on the side of the protection cover is equipped with, for preventing the hand to hold the protection cover or handle and rotate and slide, can better screw the interface, guarantee the leakproofness.

[0025] 5、 The utility model discloses the strengthening ring on the port outside of the protection cover, make the protection cover more solid, with the first protruding is connected also, guarantee the solid of the first protruding, prevent the protection cover and the first protruding from deforming under the torsion effect when rotating the protection cover. BRIEF DESCRIPTION OF DRAWINGS

[0026] The following is a brief description of the content expressed by each drawing of the utility model specification and the marks in the drawing:

[0027] Figure 1 The compatible connecting device of the utility model embodiment is in the use state, and the overall structure schematic diagram of the multiple 2L peritoneal dialysis liquid drainage bag pipeline module plus the compatible connecting device and the peritoneal dialysis machine pipeline module after docking is shown in the drawing.

[0028] Figure 2 It is the three-dimensional appearance structure schematic diagram of the compatible connecting device of the utility model embodiment.

[0029] Figure 3The utility model discloses a three -dimensional structure schematic diagram of compatible connecting structure in an embodiment of the utility model;

[0030] Figure 4 The utility model discloses a three -dimensional structure schematic diagram of multichannel connecting structure in an embodiment of the utility model;

[0031] Figure 5 The utility model discloses a three -dimensional structure schematic diagram of catheter connecting structure in an embodiment of the utility model;

[0032] Figure 6 It is the schematic diagram of 2L peritoneal dialysis liquid drainage bag pipeline module structure of prior art;

[0033] Figure 7 It is the schematic diagram of peritoneal dialysis machine pipeline module structure of prior art;

[0034] Figure 8 It is the schematic diagram of 2L peritoneal dialysis liquid drainage bag pipeline module of prior art plus compatible connecting device and peritoneal dialysis machine pipeline module docking overall structure.

[0035] In the drawing: 1, compatible connecting structure;11, catheter;12, switch clamp;13, reinforcing ring;14, protrusion;15, protective cover;16, outer thread interface;17, sealing cover;2, multichannel connecting structure;21, liquid inlet;22, liquid outlet;3, catheter connecting structure;31, liquid outlet catheter;32, catheter interface part;33, pull cover;4, peritoneal dialysis machine pipeline module;41, peritoneal dialysis machine;42, peritoneal dialysis machine pipeline;43, peritoneal dialysis machine pipeline interface;5, 2L peritoneal dialysis liquid drainage bag pipeline module;51, 2L peritoneal dialysis liquid drainage bag;52, 2L peritoneal dialysis liquid drainage bag catheter;53, 2L peritoneal dialysis liquid drainage bag interface;54, 2L peritoneal dialysis liquid drainage bag interface protective cover. DETAILED DESCRIPTION

[0036] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0037] Embodiment:

[0038] Reference Figures 1-5The compatible connecting device of the automatic peritoneal dialysis machine provided by the embodiment comprises a compatible connecting structure 1, a multi-channel connecting structure 2 and a catheter connecting structure 3, characterized in that the compatible connecting structure 1 comprises a catheter 11, a switch clamp 12 and an external thread interface 16, the multi-channel connecting structure 2 comprises at least two liquid inlet ports 21 and one liquid outlet port 22, the liquid inlet port 21 is inserted into one end of the catheter 11, the other end of the catheter 11 is fixedly connected with the external thread interface 16, the switch clamp 12 is arranged on the catheter 11, the catheter connecting structure 3 comprises an outlet catheter 31 and a catheter interface part 32, one end of the outlet catheter 31 is inserted into the liquid outlet port 22, the other end of the outlet catheter 31 is fixedly connected with one end of the catheter interface part 32, the external thread interface 16 is detachably connected with a 2L peritoneal dialysis liquid drainage bag pipeline interface 53, and the other end of the catheter interface part 32 is detachably connected with a peritoneal dialysis machine pipeline interface 43.

[0039] The external thread interface 16 is provided with a protective cover 15 used for connecting the 2L peritoneal dialysis liquid drainage bag pipeline interface 53, so that the external thread interface 16 is in a sealed state and the external thread interface 16 is protected from being polluted, the protective cover 15 comprises a reinforcing ring 13 and a protrusion 14 used for increasing friction, the reinforcing ring 13 is fixedly arranged on the outer side of the port of the protective cover 15, the protrusion 14 is arranged on the axial side of the protective cover 15, and one end of the protrusion 14 is fixedly connected with the reinforcing ring 13.

[0040] The external thread interface 16, the protective cover 15, the reinforcing ring 13 and the protrusion 14 are integrally formed components, the protrusion 13 is rectangular and at least one.

[0041] The compatible connecting structure 1 further comprises a sealing cover 17 used for protecting the external thread interface 16 from being polluted before the external thread interface 16 is connected with the 2L peritoneal dialysis liquid drainage bag pipeline interface 53, and the sealing cover 17 is threadedly connected with the external thread interface 16.

[0042] The catheter connecting structure 3 further comprises a pull cover 33 used for protecting the catheter interface part 32 from being polluted before the catheter interface part 32 is connected with the peritoneal dialysis machine pipeline interface 43, and the pull cover 33 is detachably connected with the catheter interface part 32.

[0043] The centers of the cross sections of the catheter 11, the external thread interface 16 and the protective cover 15 are on the same line.

[0044] Along the center line of the cross sections of the compatible connecting structure 1, the multi-channel connecting structure 2 and the catheter connecting structure 3, drainage pipelines that are in communication with each other and are kept sealed are formed.

[0045] The outer thread interface 16, the protective cover 15, the reinforcing ring 13 and the protrusion 14 are members made of elastic polymer material TPE.

[0046] In specific use, the medical staff first opens the protective cover 54 of the 2L peritoneal dialysis liquid drainage bag interface, exposes the 2L peritoneal dialysis liquid drainage bag interface 53, and simultaneously opens the sealing cover 17 of the outer thread interface 16. The interface 2 is an outer thread structure, and the interface 113 of the 2L peritoneal dialysis liquid drainage bag is an inner thread structure, which is matched with the adapter interface 2. By rotating the two interfaces, the 2L peritoneal dialysis liquid drainage bag pipeline module 115 is tightly combined with the adapter interface 2, and no liquid leakage phenomenon occurs. In addition, the adapter interface 2 has the protective cover 10. The protective cover 10 can isolate the hand from polluting the sterile part of the peritoneal dialysis external connecting pipe joint during the connection process, reduces the risk of infection of the patient, avoids the pollution risk caused by the need to cut the 2L peritoneal dialysis liquid drainage bag 51 to be compatible with the peritoneal dialysis machine pipeline, ensures the safety of the patient, and simultaneously reduces the pollution risk caused by frequent replacement of the 2L peritoneal dialysis liquid drainage bag. The peritoneal dialysis machine pipeline interface 43 is a direct insertion type, is directly inserted into the catheter interface part 32 during use, the switch clamp 12 corresponding to the other 2L peritoneal dialysis liquid is in a closed state before use, and thus the peritoneal dialysis liquid in use can pass through the 2L peritoneal dialysis liquid drainage bag catheter 52, be threadedly connected with the outer thread interface 16 through the 2L peritoneal dialysis liquid drainage bag interface 53, enter the compatible connection structure 1, be inserted into the liquid inlet 21 and the liquid outlet 22 in the multi-channel connection structure 2 through the catheter 11 in the compatible connection structure 1, be inserted into the liquid outlet catheter 31 and the catheter interface part 32 of the catheter connection structure 3, be inserted into the peritoneal dialysis machine pipeline interface 43, enter the peritoneal dialysis machine 41 through the peritoneal dialysis machine pipeline 42, and then be discharged from the patient's body. When one bag of 2L peritoneal dialysis liquid is used up, the switch 12 corresponding to another bag of 2L peritoneal dialysis liquid in the compatible connection structure 1 is opened, and peritoneal dialysis is continuously performed until the whole dialysis process is completed.

[0047] The utility model focuses on the optimization design of multiple structures, and through the setting of the multi-channel connection structure, the compatible connection device can simultaneously insert multiple bags of 2L peritoneal dialysis liquid. When one bag of 2L peritoneal dialysis liquid is used up, the second bag of 2L peritoneal dialysis liquid can be quickly and safely used, the user is avoided from repeatedly disconnecting the used 2L peritoneal dialysis liquid bag and reconnecting a new 2L peritoneal dialysis liquid bag, the risk of peritonitis caused by human pollution is avoided, and the safety of the patient is ensured.

[0048] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compatible connection device for an automated peritoneal dialysis machine, comprising a compatible connection structure (1), a multi-channel connection structure (2) and a catheter connection structure (3), characterized in that, The compatible connection structure (1) includes a catheter (11), a switch clamp (12), and an external thread interface (16), the multi-channel connection structure (2) includes at least two liquid inlet ports (21) and one liquid outlet port (22), the liquid inlet port (21) is inserted into one end of the catheter (11), the other end of the catheter (11) is fixedly connected with the external thread interface (16), the catheter (11) is provided with a switch clamp (12), the catheter connection structure (3) includes a liquid outlet catheter (31) and a catheter interface part (32), one end of the liquid outlet catheter (31) is inserted into the liquid outlet port (22), the other end of the liquid outlet catheter (31) is fixedly connected with one end of the catheter interface part (32), the external thread interface (16) is detachably connected with a 2L peritoneal dialysis liquid drainage bag pipeline interface (53), and the other end of the catheter interface part (32) is detachably connected with a peritoneal dialysis machine pipeline interface (43).

2. The device for the compatible connection of an automated peritoneal dialysis machine according to claim 1, characterized in that: The external thread interface (16) is provided with a protective cover (15) for connecting the 2L peritoneal dialysis liquid drainage bag pipeline interface (53) to make the external thread interface (16) in a sealed state and protect the external thread interface (16) from being contaminated, the protective cover (15) includes a reinforcing ring (13) and a protrusion (14) for increasing friction, the reinforcing ring (13) is fixedly arranged on the outer side of the port of the protective cover (15), the protrusion (14) is arranged on the axial side of the protective cover (15), and one end of the protrusion (14) is fixedly connected with the reinforcing ring (13).

3. The automatic peritoneal dialysis machine's compatible connection device according to claim 2, characterized in that: The external thread interface (16), the protective cover (15), the reinforcing ring (13) and the protrusion (14) are integrally formed components.

4. The automatic peritoneal dialysis machine's compatible connection device according to claim 2, characterized in that: The protrusion (13) is rectangular and at least one.

5. The automatic peritoneal dialysis machine of claim 1, wherein: The compatible connection structure (1) further includes a sealing cover (17) for protecting the external thread interface (16) from being contaminated before the external thread interface (16) is connected with the 2L peritoneal dialysis liquid drainage bag pipeline interface (53), and the sealing cover (17) is threadedly connected with the external thread interface (16).

6. The automatic peritoneal dialysis machine's compatible connection device according to claim 1, characterized in that: The catheter connection structure (3) further includes a pull cover (33) for protecting the catheter interface part (32) from being contaminated before the catheter interface part (32) is connected with the peritoneal dialysis machine pipeline interface (43), and the pull cover (33) is detachably connected with the catheter interface part (32).

7. The automatic peritoneal dialysis machine of claim 1, wherein: The centers of the cross sections of the catheter (11), the external thread interface (16) and the protective cover (15) are on the same line.

8. The automatic peritoneal dialysis machine's compatible connection device according to claim 1, characterized in that: Along the line connecting the centers of the cross sections of the compatible connection structure (1), the multi-channel connection structure (2) and the catheter connection structure (3), a drainage pipeline that is in communication and remains sealed is formed.

9. The automatic peritoneal dialysis machine of claim 1, wherein: The external thread interface (16), the protective cover (15), the reinforcing ring (13) and the protrusion (14) are components made of an elastic polymer material TPE.

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