Hemodialysis device

Abstract

The utility model discloses a hemodialysis device, and relates to the technical field of medical instruments, in particular to a hemodialysis device which comprises a shell, the interior of the shell is divided into a plurality of independent flow channels through main partition plates, the flow channels are filled with hollow membrane tows, and the two ends of the hollow membrane tows are sealed at the two ends of the shell through rubber plates; the interior of the inlet end cover is divided into a plurality of independent cavities through auxiliary partition plates, the cavities are communicated with the runners in a one-to-one correspondence mode, and the inlet ends of the hollow membrane tows are communicated with the cavities; according to the hemodialysis device, through the design of the multiple flow channels and the flow dividing assembly, the multiple flow channels can participate in dialysis work independently or simultaneously, when one set of flow channels coagulate, the flow channels which are not started can be rapidly started, then the situation that the device gets off the machine is avoided, dialysis treatment work can be conducted uninterruptedly, and the treatment efficiency is improved. And the psychological stress and economic burden of the patient and the labor intensity of medical staff are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more specifically, relate to a hemodialysis device. BACKGROUND

[0002] Hemodialysis is the main treatment mode of CKD (Chronic kidney diease, CKD), and hemodialysis apparatus is the core component for dialysis treatment. At present, the hemodialysis apparatus on the market is mainly composed of an inlet end cover, an outlet end cover, a shell and hollow fiber membrane filaments, the blood of a patient enters the hollow fiber membrane filaments in the shell through the inlet end cover, the side wall of the hollow fiber membrane filaments has innumerable nanometer micropores, the water and toxins retained in the blood are discharged out of the body through the micropores, at the same time, acid-base ions in the dialysate enter the blood to maintain the acid-base balance of the blood, and the purified blood flows out through the outlet end cover and returns to the patient's body. Once the dialyzer coagulates during the dialysis treatment, the dialysis equipment will issue a coagulation alarm, the medical staff will immediately close the clamps at the inlet and outlet of the extracorporeal circulation pipeline and the pump switch of the dialysis equipment, in order to prevent external pollution of the patient, the patient can only be forced to get off the machine, replace the new dialysis pipeline and hemodialysis apparatus to continue the treatment, which undoubtedly increases the psychological pressure and economic burden of the patient, and also increases the labor intensity of the medical staff.

[0003] In summary, how to solve the problem that the patient must get off the machine and replace the equipment after coagulation occurs during dialysis, and cannot continue the treatment, is a problem that the technical personnel in the field are eager to solve at present. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a hemodialysis device, through the design of multiple flow channels and a flow splitting assembly, multiple flow channels can participate in dialysis work individually or simultaneously, when coagulation occurs in one group of flow channels, the flow channels that have not been started can be started quickly, thereby avoiding the patient getting off the machine, enabling the dialysis treatment to be carried out uninterruptedly, and reducing the psychological pressure, economic burden of the patient and labor intensity of the medical staff.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A hemodialysis device comprises:

[0007] A shell is internally divided into a plurality of independent flow channels by a main partition plate, and the flow channels are filled with hollow membrane filament bundles, and the two ends of the hollow membrane filament bundles are sealed by rubber plates at the two ends of the shell;

[0008] An inlet end cover is internally divided into a plurality of independent chambers by a secondary partition plate, the chambers are in one-to-one correspondence with the flow channels and are communicated with the flow channels, and the inlet end of the hollow membrane filament bundle is communicated with the chambers;

[0009] a shunt assembly comprising a plurality of shunt ports, each of the shunt ports being in communication with the chamber through a conduit, the conduit being provided with a flow stopper or a regulator;

[0010] an outlet end cover, the outlet of which is in communication with the outlet end of all the hollow membrane filaments.

[0011] Preferably, the end face of the rubber plate is provided with a first groove for fixing a clamping auxiliary partition plate.

[0012] Preferably, the end face of the rubber plate is further provided with a third groove for fixing a clamping main partition plate.

[0013] Preferably, the inner wall of the shell is provided with a second groove for fixing a clamping main partition plate.

[0014] Preferably, the shell and the main partition plate are integrally formed.

[0015] Preferably, the two ends of the flow channel are respectively provided with a communication port in communication.

[0016] Preferably, all the flow channels in the shell are arranged in an annular array about the center line of the shell.

[0017] The communication ports are arranged on the outer peripheral wall of the shell.

[0018] Preferably, the shell is provided with an annular baffle near the communication port.

[0019] Preferably, one end of the annular baffle away from the end of the flow channel is closed connected with the inner wall of the shell, and a channel for the dialysis liquid to flow is arranged between the other end of the annular baffle close to the end of the flow channel and the inner wall of the shell.

[0020] Preferably, the shunt assembly is a luer joint, the conduit is a soft conduit, and the flow stopper or the regulator is sleeved on the conduit.

[0021] Compared with the prior art, the hemodialysis device provided by the utility model has at least the following beneficial effects:

[0022] Through the multi-flow channel design in the shell, each flow channel can work independently for dialysis, or multiple flow channels can work simultaneously for dialysis, and the selection can be made according to the dialysis flow rate requirement, and when blood clotting occurs in one or more flow channels, the previously unused flow channel can be selected to work as a replacement for the flow channel blocked by blood clotting, so that the hollow membrane filament bundle for dialysis can be switched without feeling, the whole dialysis process is continuous, and the psychological pressure, economic burden of the patient and the labor intensity of the medical staff are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] Figure 1 The structure diagram of the hemodialysis device provided by the present application is shown in the figure.

[0025] Figure 2 The structure diagram of the hemodialysis device provided by the present application is shown in the figure.

[0026] Figure 3 The structure diagram of the hemodialysis device provided by the present application is shown in the figure.

[0027] Figure 4 The structure diagram of the hemodialysis device provided by the present application is shown in the figure.

[0028] Figure 5 The structure diagram of the hemodialysis device provided by the present application is shown in the figure.

[0029] Figure 6 The structure diagram of the hemodialysis device provided by the present application is shown in the figure.

[0030] Figures 1-6 In the figure:

[0031] 1, shell; 11, first communication port; 12, second communication port; 13, annular baffle;

[0032] 2, inlet end cover; 21, secondary partition plate; 22, shunt assembly; 23, shunt port; 24, liquid inlet; 25, catheter; 26, flow stop clamp;

[0033] 3, outlet end cover;

[0034] 4, hollow membrane filament bundle; 41, rubber plate;

[0035] 5, main partition plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] The utility model discloses a hemodialysis device, through the design of multiple flow channels and shunt assembly, multiple flow channels can participate in dialysis work alone or simultaneously, when one group of flow channels appears blood clotting, the flow channel that has not been enabled can be quickly enabled, thereby avoiding the patient getting off the machine, enabling dialysis treatment work to be uninterrupted, reducing the psychological stress, economic burden of the patient and the labor intensity of medical staff.

[0038] Please refer to Figures 1-6 A hemodialysis device, comprising:

[0039] The shell 1 is internally divided into several independent flow channels by the main partition plate 5, and the flow channels are filled with hollow membrane filaments 4, both ends of the hollow membrane filaments 4 are sealed at both ends of the shell 1 by the rubber plates 41.

[0040] The inlet end cover 2 is internally divided into several independent chambers by the auxiliary partition plate 21, the chambers are in one-to-one correspondence with the flow channels and are communicated with the flow channels, and the inlet end of the hollow membrane filaments 4 is communicated with the chambers.

[0041] The shunt assembly 22 comprises several shunt ports 23, the shunt ports 23 are in one-to-one correspondence with the chambers through the catheters 25, and the catheters 25 are provided with flow stop clamps 26 or regulators.

[0042] The outlet end cover 3 is communicated with the outlet ends of all the hollow membrane filaments 4 through the liquid outlets.

[0043] As shown in Figure 1 , Figure 3 and Figure 6 , the shell 1 is internally divided into several flow channels by the main partition plate 5, and the flow channels do not interfere with each other, the hollow membrane filaments 4 for dialysis are arranged in the flow channels, and the direction of the hollow membrane filaments 4 is consistent with the direction of the flow channels.

[0044] Meanwhile, the shunt assembly 22 has several shunt ports 23, the shunt ports 23 are communicated with the inlet ends of the hollow membrane filaments 4 through the catheters 25, and the catheters 25 are provided with flow stop clamps or regulators, the on-off control of the catheters 25 is realized through the action of the flow stop clamps or regulators, when the catheters 25 are turned on, the hollow membrane filaments 4 in the corresponding flow channels are enabled for hemodialysis.

[0045] During the dialysis process, the flow channels are filled with dialysate, the blood enters the inside of the hollow membrane filaments through the inlet ends of the hollow membrane filaments 4 after passing through the shunt assembly 22 and the catheters 25, exchanges positions with the dialysate through the membrane filament wall, and then flows out from the outlet ends of the other ends of the hollow membrane filaments 4, converges in the outlet end cover 3, and is discharged through the liquid outlets of the outlet end cover 3, thereby completing the dialysis of the blood.

[0046] During dialysis, if the hollow membrane bundles 4 in one or more channels coagulate, that is, the overall blood flow rate in the channel decreases, the catheter 25 corresponding to the channel can be shut off and the catheter 25 corresponding to the unused channel can be opened, so that the overall blood flow rate of the dialysis device does not change, that is, the hollow membrane bundles 4 used for operation can be replaced without being noticed.

[0047] The shut-off or opening of catheter 25 can be achieved by controlling the stop clamp or regulator. The operation is simple and quick, and will not cause psychological burden to the patient. At the same time, its cost is relatively low compared to replacing dialysis equipment after the machine is discontinued.

[0048] One end of the housing 1 is provided with an inlet end cap 2. The interior of the inlet end cap 2 is divided into several independent chambers by a secondary partition plate 21. Each chamber is connected to the inlet end of the hollow membrane bundle 4. The inlet end cap 2 is provided with several liquid inlets 24 that are connected to each chamber. The liquid inlets 24 are connected to the diversion port 23 through a conduit 25.

[0049] like Figure 6 As shown, the inlet end cap 2 is divided into several independent chambers by the secondary partition plate 21, and each chamber is connected to the inlet end of the hollow membrane bundle 4. The shunt port 23 is first connected to the chamber through the conduit 25, and then connected to the inlet of the hollow membrane bundle 4. Therefore, blood can be collected in the chamber and then enter the hollow membrane bundle evenly, ensuring that each membrane filament in a set of hollow membrane bundles can obtain the same flow rate and pressure, thereby ensuring the stability of dialysis.

[0050] In some embodiments, the end face of the adhesive plate 41 is provided with a first groove for fixing the snap-fit ​​partition plate 21.

[0051] The end face of the adhesive plate 41 is also provided with a third groove for fixing and snapping the main partition plate 5.

[0052] The inner wall of the housing 1 is provided with a second groove for fixing and snapping the main partition plate 5.

[0053] like Figure 4 , Figure 5 and Figure 6 As shown, the main partition plate 5 is disposed inside the housing 1. Therefore, the inner wall of the housing 1 and the end face of the rubber plate 41 at its end are provided with grooves for engaging the main partition plate 5. The grooves include a second groove disposed on the inner wall of the housing 1 and a third groove disposed on the end face of the rubber plate 41, which are used to ensure the stability of the main partition plate 5.

[0054] The secondary partition plate 21 is located inside the inlet end cover 2. Therefore, the inner wall of the inlet end cover 2 and the end face of the corresponding rubber plate 41 are provided with a first groove for engaging the secondary partition plate 21, thus ensuring the stability of the secondary partition plate 21.

[0055] Moreover, the adhesive sheet 41 is preferably made of polyurethane adhesive sheet, and the ends of the hollow membrane fibers pass through the polyurethane adhesive sheet to prevent the hollow membrane fibers from becoming messy at the ends, and to seal the hollow membrane fiber bundle 4 at both ends of the shell 1, while also facilitating the end-cutting process.

[0056] In some embodiments, the housing 1 is integrally formed with the main partition plate 5.

[0057] That is, the shell 1 and the main partition plate 5 are produced by integral injection molding, which reduces the assembly process of the equipment and improves production efficiency.

[0058] In some embodiments, the two ends of the flow channel are respectively connected to a communication port for the inlet and outlet of the dialysate.

[0059] like Figure 2 As shown, a first connecting port 11 and a second connecting port 12 are respectively provided at both ends of the flow channel. The first connecting port 11 is close to the outlet end of the hollow membrane bundle 4 and is used for the entry of dialysate in the flow channel, while the second connecting port 12 is close to the inlet end of the hollow membrane bundle 4 and is used for the discharge of dialysate in the flow channel. Since the flow direction of dialysate in the flow channel is opposite to the flow direction of blood in the hollow membrane bundle, the dialysis efficiency of blood can be improved to some extent.

[0060] In some embodiments, all the flow channels inside the housing 1 are arranged in a ring array about the center line of the housing 1;

[0061] All the communication ports are arranged on the outer peripheral wall of the shell 1.

[0062] like Figure 1 and Figure 6 As shown, the number of flow channels inside the shell 1 can be 2, 3, 4, 5, etc., and the multiple flow channels are arranged in a ring array. Therefore, each flow channel has one side close to the outer wall of the shell 1, which makes it convenient to set the connection port on the outer wall of the shell 1, and thus facilitates the connection of the dialysate inlet pipe and outlet pipe.

[0063] In some embodiments, an annular baffle 13 is provided inside the housing 1 near the communication port.

[0064] like Figure 3 As shown, when the dialysate enters through the first connecting port 11, it first contacts the annular baffle 13 to prevent the dialysate from directly washing the hollow membrane bundle 4. At the same time, the dialysate can be diverted to both ends under the action of the annular baffle 13, so that the hollow membrane bundle 4 near the end of the flow channel can also contact the dialysate, increasing the effective area for material exchange inside and outside the hollow membrane bundle 4.

[0065] When the dialysate flows out of the shell 1 through the second flow port 12, the dialysate in the flow channel directly flows out through the passage between one side of the annular baffle 13 and the inner wall of the shell 1, and the remaining part needs to bypass the annular baffle 13 and flow out through the passage between the other side of the annular baffle 13 and the inner wall of the shell 1. When the dialysate bypasses the annular baffle 13, it contacts the hollow membrane filament bundle 4 at the end of the flow channel, which also helps to increase the effective area of the exchange of substances inside and outside the hollow membrane filament bundle 4, so that the dialysate can fully contact the end of the hollow membrane filament bundle 4 and ensure the efficiency of dialysis.

[0066] In some embodiments, one end of the annular baffle 13 away from the end of the flow channel is closed connected with the inner wall of the shell 1, and a passage for the dialysate to flow is arranged between the other end close to the end of the flow channel and the inner wall of the shell 1.

[0067] As shown in Figure 6 The connection mode of the two ends of the annular baffle 13 is limited, that is, the passage between the annular baffle 13 and the inner wall of the shell 1 is closed at one end away from the end of the flow channel and is open at the other end. Therefore, when the dialysate passes through the communication port, it must pass through the end of the flow channel, which ensures that the dialysate fully contacts the outer wall of the hollow membrane filament bundle 4 and ensures the efficiency of dialysis.

[0068] In some embodiments, the shunt assembly 22 is a luer joint, the catheter 25 is a soft catheter, the flow stop clamp is a flow stop clamp 26 sleeved outside the catheter 25, and the regulator is a hose flow rate regulator sleeved outside the catheter 25.

[0069] The flow stop clamp is used to completely stop the blood flow in the catheter 25, and the regulator is used to adjust the flow rate of the blood in the catheter 25.

[0070] The shunt assembly 22 adopts a luer joint, which is convenient for quick connection with other existing medical devices. In the design, the luer joint is fixedly connected with the inlet end cover 2, that is, the connection positions of the two ends of the catheter 25 are relatively fixed, which can stabilize the catheter 25. In addition, the catheter 25 adopts a soft catheter, and the flow stop clamp 26 or the regulator is arranged outside the catheter 25 to avoid contact with the blood in the catheter 25, thereby avoiding contamination of the blood. The flow stop clamp 26 preferably adopts a Robert clamp or a clamping piece.

[0071] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0072] The blood dialysis device provided by the utility model is described in detail. The principle and implementation mode of the utility model are described by applying specific examples. The description of the above examples is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A hemodialysis device, characterized in that, include: The shell (1) is divided into several independent flow channels by a main partition plate (5). The flow channels are filled with hollow membrane bundles (4). The two ends of the hollow membrane bundles (4) are sealed by adhesive plates (41) at both ends of the shell (1). The inlet end cap (2) is divided into several independent chambers by a secondary partition plate (21). The chambers are connected to the flow channels one by one. The inlet end of the hollow membrane bundle (4) is connected to the chambers. The diversion assembly (22) includes several diversion ports (23), which are connected to the chambers one by one through conduits (25). The conduits (25) are equipped with flow stop clamps (26) or regulators. The outlet cap (3) has its liquid outlet connected to the outlet ends of all the hollow membrane bundles (4).

2. The hemodialysis device according to claim 1, characterized in that, The end face of the adhesive plate (41) is provided with a first groove for fixing the snap-fit ​​partition plate (21).

3. The hemodialysis device according to claim 1, characterized in that, The end face of the adhesive plate (41) is also provided with a third groove for fixing and snapping the main partition plate (5).

4. The hemodialysis device according to claim 1, characterized in that, The inner wall of the housing (1) is provided with a second groove for fixing and snapping the main partition plate (5).

5. The hemodialysis device according to claim 1, characterized in that, The shell (1) and the main partition plate (5) are integrally formed.

6. The hemodialysis device according to claim 1, characterized in that, The two ends of the flow channel are respectively connected to a connecting port for the inlet and outlet of the dialysis fluid.

7. The hemodialysis device according to claim 6, characterized in that, All the flow channels inside the housing (1) are arranged in a ring array about the center line of the housing (1); The communication ports are all arranged on the outer peripheral wall of the shell (1).

8. The hemodialysis device according to claim 7, characterized in that, An annular baffle (13) is provided inside the housing (1) near the communication port.

9. The hemodialysis device according to claim 8, characterized in that, The end of the annular baffle (13) away from the end of the flow channel is closed and connected to the inner wall of the shell (1), and the end near the end of the flow channel is provided with a channel for the flow of dialysis fluid between it and the inner wall of the shell (1).

10. The hemodialysis apparatus according to any one of claims 1-9, characterized in that, The diversion assembly (22) is a Luer connector, the conduit (25) is a soft conduit, and the flow stop clamp (26) or regulator is sleeved on the conduit (25).

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