Hemodialysis pipeline for citric acid

Abstract

The utility model provides a hemodialysis pipeline for citric acid. The hemodialysis pipeline comprises an artery pipe, a citric acid medicine inlet pipe, a vein pipe, a vein pot and a pressure extension pipe. Wherein one end of the artery catheter is connected with a human artery end, and the other end is communicated with the dialyzer; one end of the citric acid feeding tube is communicated with the arterial duct, and the other end is connected with the citric acid infusion bag; one end of the vein tube is communicated with the dialyzer, and the other end is connected with a human vein end; the vein pot is connected to the vein tube in series; the pressure extension pipe is communicated with the vein pot and the citric acid input device. During use, the pressure extension tube is communicated between the vein pot and the citric acid input device, so that citric acid can be directly input into the vein pot through the pressure extension tube; that is to say, according to the technical scheme, citric acid can be directly input into the venous kettle through the pressure extension tube, blood is prevented from being solidified in the venous kettle under the action of the citric acid, and therefore the risk of thrombus can be prevented, and the cost for dialysis is also greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dialysis machines, in particular to a hemodialysis pipeline for citric acid. Background Art

[0002] Hemodialysis is a treatment for renal failure. Patients use a dialysis machine to remove waste and excess fluid from the blood to maintain electrolyte and acid-base balance in the blood. The dialysis machine is connected to the patient's blood vessels through a dialysis line. The patient's blood is introduced into the dialysis machine, and the plasma separator removes waste and excess fluid from the blood, and then the clean blood is returned to the patient's body.

[0003] In actual clinical practice, when patients undergo hemodialysis, citric acid needs to be injected into the blood extracted from the human body to prevent the blood from coagulating during the dialysis process. Figure 2 As shown, an infusion bag is connected to the arterial tube. As the blood in the human body is drawn out, the citric acid in the infusion bag is evenly injected into the arterial tube to mix with the blood, thereby preventing the blood from coagulating during the subsequent dialysis process.

[0004] The inventor discovered during work that blood coagulation was occasionally found in the venous pot located downstream of the dialyzer. Further research found that the citric acid mixed in the blood had a reduced content of citric acid after flowing through the subsequent dialyzer, and it was the reduced content of citric acid that caused the blood coagulation in the venous pot. The coagulation of blood in the venous pot poses a risk of thrombosis to the patient. In order to avoid this risk, when blood coagulation is found, a new dialysis line is usually replaced to avoid the blood clot being introduced into the human body, which leads to a substantial increase in the cost of dialysis for the patient. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the technical defect in the prior art that a part of the citric acid will be filtered out when flowing through the subsequent dialyzer, resulting in a decrease in the citric acid content in the blood, and then causing the blood to easily coagulate in the venous pot, thereby providing a citric acid hemodialysis pipeline that can prevent blood from coagulating in the venous pot.

[0006] To this end, the utility model provides a hemodialysis circuit for citric acid, comprising:

[0007] An arterial tube, one end of which is suitable for connection with the arterial end of the human arteriovenous fistula to draw blood, and the other end of which is suitable for communication with the input port of the dialyzer;

[0008] A citric acid inlet tube, one end of which is connected to the arterial tube, and the other end of which is suitable for pluggable connection with the citric acid infusion bag;

[0009] A venous tube, one end of which is connected to the output port of the dialyzer and the other end of which is connected to the venous end of the human arteriovenous fistula to return the blood;

[0010] An intravenous pot, connected in series to the intravenous tube;

[0011] The pressure extension tube has one end connected to the intravenous pot and the other end suitable for connecting to the citric acid infusion device.

[0012] As a preferred solution, the other end of the pressure extension tube is connected to the injection head of a syringe for injecting citric acid.

[0013] As a preferred solution, the syringe is suitable for being installed at the heparin pump position of the dialysis machine, and the heparin pump of the dialysis machine is used to push the syringe to input citric acid into the venous pot through the pressure extension tube.

[0014] As a preferred solution, the arterial tube is suitable for connecting to the inlet of the dialyzer after passing through the blood pump of the dialyzer.

[0015] As a preferred solution, the citric acid inlet tube is connected to the arterial tube via an upstream portion of the blood pump.

[0016] As a preferred solution, it also includes a pressure tube, one end of which is connected to the venous pot, and the other end is connected to the venous pressure sensor of the dialysis machine.

[0017] As a preferred solution, it also includes an arterial pot connected in series to the arterial tube.

[0018] As a preferred solution, the arterial pot is connected in series at the downstream of the arterial tube passing around the blood pump and is located upstream of the dialyzer.

[0019] The technical solution provided by the utility model has the following advantages:

[0020] 1. The utility model of the hemodialysis pipeline for citric acid comprises an arterial tube, a citric acid inlet tube, a venous tube, a venous pot and a pressure extension tube; wherein one end of the arterial tube is connected to the arterial end of the human arteriovenous fistula, and the other end is connected to the input port of the dialyzer; one end of the citric acid inlet tube is connected to the arterial tube, and the other end is pluggably connected to the citric acid infusion bag; one end of the venous tube is connected to the output port of the dialyzer, and the other end is connected to the venous end of the human arteriovenous fistula; the venous pot is connected in series to the venous tube; one end of the pressure extension tube is connected to the venous pot, and the other end is connected to the citric acid input device.

[0021] When the citric acid hemodialysis pipeline of the utility model is used for dialysis, blood is input into the dialyzer from the input port of the dialyzer after passing through the blood pump from the arterial tube, and then output from the output port of the dialyzer and return to the human body from the venous tube through the venous pot; the arterial tube is connected to the citric acid drug inlet tube so that citric acid is input into the blood through the citric acid drug inlet tube, the venous pot is connected to a pressure extension tube, and the other end of the pressure extension tube is connected to the citric acid input device so that citric acid can be directly input into the venous pot through the pressure extension tube.

[0022] The technical solution of the utility model improves the original hemodialysis pipeline, and adds a pressure extension tube and a citric acid input device, so that citric acid can be directly input into the venous pot through the pressure extension tube. Under the action of citric acid, blood coagulation in the venous pot is avoided, thereby preventing the risk of causing thrombosis.

[0023] 2. In the citric acid hemodialysis circuit of the utility model, the pressure extension tube is connected with the syringe, and the syringe is installed at the position of the heparin pump. The heparin pump can push the syringe to move so that the citric acid is input from the pressure extension tube into the venous pot. The heparin pump and the syringe are used in combination, and the existing heparin pump of the dialysis machine is used to accurately input a precise amount of citric acid into the venous pot without manual operation.

[0024] 3. The citrate hemodialysis circuit of the utility model and the arterial pot can discharge the air accumulated in the pot, adjust the liquid level, and can also serve as an interface for various infusions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the prior art or the specific implementation methods of the present utility model, the drawings used in the description of the prior art or the specific implementation methods are briefly introduced below.

[0026] Figure 1 The utility model is a schematic diagram of the structural principle of a hemodialysis pipeline for citric acid.

[0027] Figure 2 It is a schematic diagram of the structural principle of the original hemodialysis pipeline.

[0028] Figure numerals: 1, arterial tube; 2, dialyzer; 3, citric acid inlet tube; 4, citric acid infusion bag; 5, venous tube; 6, venous pot; 7, pressure extension tube; 8, syringe; 81, injection head; 9, blood pump; 10, pressure tube; 11, arterial pot. DETAILED DESCRIPTION

[0029] In order to make those skilled in the art better understand the present solution, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the claims and description of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not limited to those steps or units clearly listed, but may also include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances. In addition, the term "multiple" should mean two or more. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

[0032] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. Example

[0033] This embodiment provides a hemodialysis circuit for citric acid, such as Figure 1As shown, it includes: an arterial tube 1, a citric acid inlet tube 3, a venous tube 5, a venous pot 6 and a pressure extension tube 7; wherein one end of the arterial tube 1 is suitable for being connected to the arterial end of a human arteriovenous fistula to draw out blood, and the other end is suitable for being connected to the input port of a dialyzer 2; one end of the citric acid inlet tube 3 is connected to the arterial tube 1, and the other end is suitable for being pluggably connected to a citric acid infusion bag 4; one end of the venous tube 5 is connected to the output port of the dialyzer 2, and the other end is connected to the venous end of a human arteriovenous fistula to return blood; the venous pot 6 is serially connected to the venous tube 5; one end of the pressure extension tube 7 is connected to the venous pot 6, and the other end is suitable for being connected to a citric acid input device.

[0034] When the citric acid hemodialysis circuit of this embodiment is used for dialysis, blood is input from the arterial tube 1 to the dialyzer 2 from the input port of the dialyzer 2 after passing through the blood pump 9, and then output from the output port of the dialyzer 2 to return to the human body from the venous tube 5 through the venous pot 6; a citric acid inlet tube 3 is connected to the arterial tube 1 so that citric acid is input into the blood through the citric acid inlet tube 3, and a pressure extension tube 7 is connected to the venous pot 6, and the other end of the pressure extension tube 7 is connected to the citric acid input device, so that citric acid can be directly input into the venous pot 6 through the pressure extension tube 7.

[0035] That is to say, the technical solution of this embodiment improves the original hemodialysis pipeline, adds a pressure extension tube 7 and a citric acid input device, so that citric acid can be directly input into the venous pot through the pressure extension tube 7. Under the action of citric acid, blood coagulation in the venous pot 6 is avoided, thereby preventing the risk of causing thrombosis.

[0036] In this embodiment, the other end of the pressure extension tube 7 is connected to the injection head 81 of the syringe 8 for injecting citric acid. The syringe 8 is suitable for being installed at the heparin pump position of the dialysis machine, and the heparin pump of the dialysis machine is used to push the syringe 8 to inject citric acid into the venous pot through the pressure extension tube 7; the heparin pump can push the syringe 8 to move so that the citric acid is injected from the pressure extension tube 7 into the venous pot 6. The heparin pump and the syringe 8 are used together to accurately inject appropriate citric acid into the venous pot 6 without manual operation.

[0037] The arterial tube 1 is suitable for connecting with the input port of the dialyzer 2 after passing through the blood pump 9 of the dialyzer. The citric acid inlet tube 3 is connected with the upstream part of the arterial tube 1 passing through the blood pump 9.

[0038] Preferably, it further comprises a pressure tube 10, one end of which is connected to the venous pot 6, and the other end of which is connected to the venous pressure sensor of the dialysis machine.

[0039] Preferably, it also includes an arterial pot 11, which is connected in series to the arterial tube 1. The arterial pot 11 can discharge the air accumulated in the pot, adjust the liquid level, and can also serve as an interface for various infusions.

[0040] The arterial pot 11 is serially connected to the arterial tube 1 at the downstream of the blood pump 9 and is located at the upstream of the dialyzer 2 .

[0041] The hemodialysis line for citric acid in this embodiment is used as follows: the hemodialysis line for citric acid is installed on the dialysis machine. Under the action of the blood pump 9, blood is input from the arterial tube 1 to the dialyzer 2 from the input port of the dialyzer 2 after passing through the blood pump 9, and then output from the output port of the dialyzer 2 through the venous pot 6 and return to the human body from the venous tube 5; a citric acid inlet tube 3 is connected to the arterial tube 1, and the citric acid inlet tube 3 is connected to the citric acid outlet bag 4, so that citric acid is input into the blood through the citric acid inlet tube 3; a pressure extension tube 7 is connected to the venous pot 6, and the other end of the pressure extension tube 7 is connected to the syringe 8. Under the action of the heparin pump, the citric acid in the syringe 8 is directly input from the pressure extension tube 7 to the venous pot 6 to prevent thrombosis.

[0042] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of this innovative technical solution.

Claims

1. A hemodialysis circuit for citric acid, characterized in that: include: An arterial tube (1), one end of which is suitable for connection with the arterial end of an arteriovenous fistula of a human body to draw out blood, and the other end of which is suitable for communication with an input port of a dialyzer (2); A citric acid inlet tube (3), one end of which is connected to the arterial tube (1), and the other end of which is suitable for being pluggably connected to the citric acid infusion bag (4); A venous tube (5), one end of which is connected to the output port of the dialyzer (2), and the other end of which is connected to the venous end of the human arteriovenous fistula to return blood; A venous pot (6) connected in series to the venous tube (5); A pressure extension tube (7) has one end connected to the intravenous pot (6) and the other end suitable for connecting to a citric acid infusion device.

2. The hemodialysis circuit for citric acid according to claim 1, characterized in that: The other end of the pressure extension tube (7) is connected to an injection head (81) of a syringe (8) for injecting citric acid.

3. The hemodialysis circuit for citric acid according to claim 2, characterized in that: The syringe (8) is suitable for being installed at the heparin pump position of the dialysis machine, and the heparin pump of the dialysis machine is used to push the syringe (8) through the pressure extension tube (7) to input citric acid into the venous pot.

4. The hemodialysis circuit for citric acid according to claim 1, characterized in that: The arterial tube (1) is suitable for connecting to the input port of the dialyzer (2) after passing through the blood pump (9) of the dialyzer.

5. The hemodialysis circuit for citric acid according to claim 4, characterized in that: The citric acid inlet tube (3) is connected to the arterial tube (1) via the upstream portion of the blood pump (9).

6. The hemodialysis circuit for citric acid according to claim 1, characterized in that: It also includes a pressure tube (10), one end of which is connected to the venous pot (6), and the other end of which is connected to the venous pressure sensor of the dialysis machine.

7. The hemodialysis circuit for citric acid according to claim 4, characterized in that: It also includes an arterial pot (11) which is connected in series to the arterial tube (1).

8. The hemodialysis circuit for citric acid according to claim 7, characterized in that: The arterial pot (11) is connected in series to the arterial tube (1) at the downstream of the blood pump (9) and is located upstream of the dialyzer (2).

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