Pre-filling flow path structure of blood perfusion dialysis combined system

Abstract

The utility model discloses a pre-filling flow path structure of a blood perfusion dialysis combined system, which comprises a public flow path, a perfusion flow path and a dialysis flow path, a perfusion device is arranged in the perfusion flow path, a dialyzer is arranged in the dialysis flow path, the perfusion flow path is connected with the dialysis flow path in parallel, and the dialyzer is connected with the public flow path in parallel. The perfusion flow path and the dialysis flow path are connected through a series flow path; a first switch valve and a second switch valve are arranged at the two ends of the perfusion device respectively, a third switch valve is arranged on the series connection flow path, and a fourth switch valve is arranged on the preceding stage flow path of the dialyzer. The parallel connection mode is adopted, the perfusion flow path and the dialysis flow path are connected, meanwhile, the series connection flow path is connected between the perfusion flow path and the dialysis flow path, and the connection state of the perfusion pipeline and the dialysis pipeline is adjusted through opening and closing of the first switch valve, the second switch valve, the third switch valve and the fourth switch valve; therefore, switching between series pre-charging and independent pre-charging is achieved, and bubbles are fully eliminated.

Description

Technical Field

[0001] This utility model relates to a combined perfusion and hemodialysis system, and particularly to a pre-filled flow path structure for a combined hemoperfusion and dialysis system. Background Technology

[0002] Hemodialysis and hemoperfusion are commonly used methods of blood purification. Pre-filling the dialyzer and perfusion unit is an essential prerequisite in both processes. Pre-filling removes air from the dialysis and perfusion tubing, ensuring no air bubbles are generated during purification. However, current combined hemodialysis and perfusion systems can only pre-fill the perfusion and dialysis tubing in series, not independently. This results in insufficient pre-filling of the dialysis and perfusion tubing, potentially leaving residual air bubbles and increasing the subsequent defoaming pressure. Utility Model Content

[0003] To address the shortcomings of the existing technology, the present invention aims to provide a pre-filling flow path structure for a combined hemoperfusion and dialysis system. This flow path structure can not only achieve series pre-filling of the perfusion flow path and the dialysis flow path, but also allow the perfusion flow path and the dialysis flow path to be pre-filled independently, thus fully eliminating air bubbles.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a pre-filling flow path structure of a combined hemoperfusion and dialysis system, including a common flow path, a perfusion flow path and a dialysis flow path, wherein the perfusion flow path is provided with a perfusion device and the dialysis flow path is provided with a dialyzer, the perfusion flow path and the dialysis flow path are connected in parallel, and the perfusion flow path and the dialysis flow path are also connected in series through a flow path;

[0005] The perfusion device is equipped with a first switch valve and a second switch valve at both ends, the series flow path is equipped with a third switch valve, and the pre-flow path of the dialyzer is equipped with a fourth switch valve.

[0006] Optionally, the common flow path is equipped with a blood pump and a fifth switching valve, and the common flow path is connected to pre-flushing fluid.

[0007] Optionally, the end of the perfusion device is connected to a first waste bag, and the end of the dialyzer is connected to a second waste bag.

[0008] By adopting the above technical solution, this utility model connects the perfusion flow path and the dialysis flow path in parallel, and connects a series flow path between them. By opening and closing the first, second, third and fourth switching valves, the connection state of the perfusion line and the dialysis line is adjusted, thereby realizing the switching between series pre-filling and independent pre-filling, and achieving full elimination of air bubbles. Attached Figure Description

[0009] Figure 1This is a schematic diagram of the flow path structure of this utility model. Detailed Implementation

[0010] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0011] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0012] like Figure 1 As shown, this utility model discloses a pre-filling flow path structure for a combined hemoperfusion and dialysis system, including a common flow path 100, a perfusion flow path 200, and a dialysis flow path 300.

[0013] In this invention, since a combined dialysis and perfusion system is used, the perfusion flow path 200 and the dialysis flow path 300 share a common flow path 100. That is, at the end of the common flow path 100, two flow paths branch off: one is the perfusion flow path 200, and the other is the dialysis flow path 300. Therefore, the perfusion flow path 200 and the dialysis flow path 300 are connected in parallel. Simultaneously, the perfusion flow path 200 and the dialysis flow path 300 are also connected in series via a flow path 400. It should be noted that the perfusion flow path 200 must be located before the dialysis flow path 300 to ensure that perfusion occurs before dialysis.

[0014] In this invention, an irrigation device 210 is provided in the irrigation flow path 200, and a first waste liquid bag 211 is connected to the end of the irrigation device 210. A dialyzer 310 is provided in the dialysis flow path 300, and a second waste liquid bag 311 is connected to the end of the dialyzer 310. A first switching valve 220 and a second switching valve 230 are respectively provided at both ends of the irrigation device 210. A third switching valve 410 is provided in the series flow path 400, and a fourth switching valve 320 is provided in the pre-stage flow path of the dialyzer 310. For example... Figure 1 As shown, the fourth switching valve 320 is located at the front of the junction of the series flow path 400 and the dialysis flow path 300.

[0015] In this invention, the common flow path 100 is equipped with a blood pump 110 and a fifth switching valve 120, and the common flow path is connected to a pre-flushing solution, which is usually physiological saline.

[0016] In this utility model, the first switching valve 220, the second switching valve 230, the third switching valve 410, the fourth switching valve 320, and the fifth switching valve 120 are all pinch valves.

[0017] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0018] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.

Claims

1. A pre-filling flow path structure for a combined hemoperfusion and dialysis system, characterized in that, It includes a common flow path, an irrigation flow path, and a dialysis flow path. The irrigation flow path is equipped with an irrigation device, and the dialysis flow path is equipped with a dialyzer. The irrigation flow path and the dialysis flow path are connected in parallel, and the irrigation flow path and the dialysis flow path are also connected in series through a flow path. The perfusion device is equipped with a first switch valve and a second switch valve at both ends, the series flow path is equipped with a third switch valve, and the pre-flow path of the dialyzer is equipped with a fourth switch valve.

2. The pre-charging flow path structure of the hemodialysis combined system according to claim 1, wherein The common flow path is equipped with a blood pump and a fifth switching valve, and the common flow path is connected to pre-flushing fluid.

3. The pre-charging flow path structure of the hemodialysis combined system according to claim 2, wherein The end of the perfusion device is connected to a first waste liquid bag, and the end of the dialyzer is connected to a second waste liquid bag.

Images