Auxiliary blood return device for hemodialysis treatment
By designing an auxiliary blood return device for hemodialysis treatment, and utilizing a parallel bridging blood return circuit and regulating valve clamp, the problem of blood not being able to be returned due to coagulation was solved, achieving safe blood return and improving the quality and safety of dialysis.
Patent Information
- Application Number
- CN202423087531.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-13
AI Technical Summary
During hemodialysis, clotting of blood in the arterial and/or venous chambers and/or dialysis filters can prevent blood from being returned to the patient. Current technologies struggle to effectively address this issue, leading to decreased dialysis quality and blood loss.
Design a blood return device for hemodialysis treatment, including an arterial inlet line, a pump tubing, an arterial reservoir, a venous return line and a venous reservoir, with parallel bridging return lines, and equipped with a regulating valve and tubing clamps for rapid blood return during clotting.
It effectively avoids the problem of blood not being able to be reinfused due to coagulation, reduces the overall blood loss rate of the patient's tubing, and ensures the quality and safety of dialysis.
Smart Images
Figure CN223901032U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field especially, relates to a blood dialysis treatment auxiliary blood return device. BACKGROUND
[0002] At present, the clinical application range of hemodialysis treatment is more and more wide, the number of patients receiving dialysis treatment increases year by year, and important organs often bleed or have bleeding tendency in clinic, and heparinization will inevitably aggravate bleeding, and even cause life danger of patients, at this time, heparin-free dialysis treatment is often used.
[0003] The main risk of heparin-free dialysis is extracorporeal coagulation, and chronic kidney disease patients often have coagulation function abnormalities, especially patients in the end-stage of kidney disease, which shows high coagulation state, and when heparin is insufficient, it will also cause extracorporeal coagulation. The common site of coagulation of hemodialysis is dialysis filter and arteriovenous pot. When the arteriovenous pot and / or dialysis filter coagulates, it is most likely to cause blood return blockage, and about 250ml of blood in the extracorporeal circulation must be discarded, which leads to a substantial reduction in the dialysis quality of patients and seriously affects the safety of dialysis of patients.
[0004] The application of heparin and other anticoagulants to patients with organ bleeding or severe bleeding tendency may cause serious complications. At present, due to the fact that dialysis patients often have gastrointestinal or important organ bleeding, heparin-free dialysis is often used during hemodialysis, and the commonly used heparin-free dialysis methods include intermittent salt water flushing method, shortening of dialysis time, extracorporeal heparin method, application of new dialysis filter, etc. However, no matter which method is used, there is a risk of coagulation of extracorporeal circulation pipeline, and the incidence of coagulation of heparin-free dialysis is 5%. The coagulation of extracorporeal circulation pipeline is mostly located in the arterial pot, the venous pot or the dialysis filter, and once the coagulation of these parts occurs, it will lead to difficulty in blood return of the whole pipeline. At present, for such a situation, the whole circulation pipeline including the dialysis filter is usually discarded, which will cause a large amount of blood loss. The problem can also be solved by replacing the venous access at regular intervals, but this will cause waste of materials. At the same time, repeated disassembly and assembly of the pipeline may cause the possibility of blood contamination. In addition, when the venous pipeline coagulates and blocks for a period of time, the pressure in the pipeline and the dialysis filter is high, and when the venous pipeline is replaced, a large amount of blood will be sprayed from the dialysis filter, which will also cause the possibility of blood loss and contamination.
[0005] In summary, when the dialysis pipeline arteriovenous pot and / or dialysis filter coagulates, a simple and convenient pipeline that can smoothly assist the blood return of the remaining unit part is particularly important. SUMMARY
[0006] In view of the above problems, the utility model discloses a hemodialysis treatment auxiliary blood return device can effectively avoid the problem that blood cannot be returned to the patient's body due to the coagulation of the arterial pot and (or) the venous pot and (or) the dialysis filter, and when a single coagulation unit occurs, the blood of the remaining pipeline units can be smoothly returned.
[0007] The utility model adopts the technical scheme as follows:
[0008] The utility model discloses a hemodialysis treatment auxiliary blood return device, including arterial blood drawing pipeline, pump transfer pipe, arterial pot, venous blood return pipeline and venous pot, arterial blood drawing pipeline output end is connected with pump transfer pipe input end, the output end of pump transfer pipe is connected with arterial pot input end through the pipeline, the output end of arterial pot is connected to dialysis filter input end through the pipeline, venous blood return pipeline input end is connected with venous pot output end, and the input end of venous pot is connected to dialysis filter output end through the pipeline,
[0009] Parallel bridge blood return pipeline is arranged between the input end and the output end of the arterial pot, the venous pot and the dialysis filter, and adjusting valve and pipeline clamp are arranged on the bridge blood return pipeline.
[0010] Further, pipeline clamps are arranged on the arterial blood drawing pipeline and the venous blood return pipeline.
[0011] Further, an infusion port is arranged on one side of the arterial blood drawing pipeline.
[0012] Further, an arterial pressure monitoring port is arranged on one side of the input end of the pump transfer pipe, and a heparin input port is arranged on one side of the output end.
[0013] Further, an arterial pot exhaust pipe is arranged on one end of the arterial pot, and a pipeline clamp is arranged on the arterial pot exhaust pipe.
[0014] Further, a liquid infusion pipe and a venous pressure monitoring port are arranged on one end of the venous pot respectively, and pipeline clamps are arranged on the liquid infusion pipe and the venous pressure monitoring port.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] The utility model has clear thinking, strong pertinence, simple structure, can simply, effectively avoid the condition that the blood of pipeline and other unit parts cannot be returned to the patient's body when the arterial pot and (or) the venous pot and (or) the dialysis filter coagulate, greatly reduce the incidence of patient's overall pipeline blood loss, ensure the dialysis quality and dialysis safety of the patient. ACCURACY OF DRAWINGS
[0017] Figure 1 It is the overall structure schematic diagram of the utility model.
[0018] Wherein, the reference sign: 1-arterial blood vessel route; 2-arterial pressure monitoring port; 3-pump tube; 4-heparin input port; 5-arterial pot; 51-arterial pot exhaust pipe; 6-dialysis filter; 7-venous blood return line; 8-venous pot; 81-liquid infusion tube; 9-bridge back blood vessel route; 10-infusion port; 11-venous pressure monitoring port; 12-regulating valve; 13-pipeline clamp. DETAILED DESCRIPTION
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.
[0020] It should be noted that in the description of the present application, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not mean that the device or element must have a particular orientation, be constructed and operated in a particular orientation.
[0021] As shown in Figure 1 The blood dialysis treatment auxiliary blood return device provided by the present application comprises an arterial blood vessel route 1, a pump tube 3, an arterial pot 5, a venous blood return line 7 and a venous pot 8.
[0022] The input end of the arterial blood vessel route 1 is connected to an arterial puncture needle for puncturing the internal arteriovenous fistula of a patient, and the output end is connected to the input end of the pump tube 3; the output end of the pump tube 3 is connected to the input end of the arterial pot 5 through a pipeline, and the pump tube 3 is a section of pipeline which can be embedded in the pump rotor of a dialysis machine, serving as a power source for blood drawing and blood return. The output end of the arterial pot 5 is connected to the input end of the dialysis filter 6 through a pipeline; the input end of the venous blood return line 7 is connected to the output end of the venous pot 8, and the output end is connected to an internal arteriovenous fistula venous puncture needle, so as to return blood to the patient's body; the input end of the venous pot 8 is connected to the output end of the dialysis filter 6 through a pipeline; pipeline clamps are arranged on the arterial blood vessel route 1 and the venous blood return line 7, for blocking the connection between the pipeline and the puncture needle of the patient.
[0023] The dialysis filter 6 is an instrument required for existing dialysis treatment, and does not belong to the innovation scope of the present application.
[0024] In the embodiment, the bridge blood return line 9 is connected in parallel between the input end and the output end of the arterial pot 5, between the input end and the output end of the venous pot 8, and between the input end and the output end of the dialysis filter 6, and the regulating valve 12 and the line clamp 13 are arranged on the bridge blood return line 9.
[0025] One side of the arterial blood drawing line 1 is provided with the infusion port 10, which is a line of about 5 cm long in communication with the arterial blood drawing line 1 in the embodiment, and the line is provided with a line clamp to ensure the clamping of the infusion port 10 when no infusion is performed, so as to prevent microorganisms and gas from entering.
[0026] The arterial pressure monitoring port 2 is arranged at one side of the input end of the pump tube 3, which is a line of about 25 cm long in communication with the main line in the embodiment, and the line is provided with a line clamp. The arterial pressure monitoring port 2 is connected with the arterial pressure sensor of the dialysis machine, and is used for monitoring the change of the arterial blood flow pressure during the whole dialysis period, so as to ensure the safety of dialysis. The heparin input port 4 is arranged at one side of the output end of the pump tube 3, which is a line of about 35 cm long in communication with the main line in the embodiment. The line is the port for continuous input of the anticoagulant, and the line is provided with a line clamp. When the anticoagulant is not needed to be pumped in, the line clamp is closed to prevent the blood from flowing out, so as to ensure the safety of dialysis.
[0027] In the embodiment, one end of the arterial pot 5 is provided with the arterial pot exhaust pipe 51, and the arterial pot exhaust pipe 51 is provided with a line clamp. The arterial pot 5 is a part of the line which is obviously bulged, and the air in the line and the arterial pot 5 can be discharged. One end of the venous pot 8 is respectively provided with the liquid infusion pipe (venous pot exhaust pipe) 81 and the venous pressure monitoring port 11, and the liquid infusion pipe (venous pot exhaust pipe) 81 and the venous pressure monitoring port 11 are provided with line clamps. The venous pot 8 has similar effect with the arterial pot, and is the exhaust part after the dialysis filter 6.
[0028] The working principle of the utility model is as follows: when the line coagulation does not occur, the line clamp 13 and the regulating valve 12 on the bridge blood return line 9 are in the closed state. After the blood is drawn out through the arterial blood drawing line 1, the blood normally flows in the arterial pot 5, the dialysis line, the dialysis filter 6 and the venous pot 8. When the coagulation occurs in the dialysis filter 6, the arterial pot 5 or the venous pot 8, all the three bridge blood return lines 9 in the line are opened, including the line clamp 13 and the regulating valve 12, so that the blood is returned to the body in the first time. In the blood return process, the position where the coagulation occurs is judged by the combination of the regulating valve 12 and the arterial and venous pressure detection, and the regulating valve 12 of the position where the coagulation does not occur is adjusted, so that the blood of the position where the coagulation does not occur or the coagulation is not complete can be slowly returned to the patient's body.
[0029] The utility model discloses a kind of, and the details of the utility model are well-known technology.
[0030] The above-described embodiments are merely preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various modifications and improvements to the technical solutions of the present utility model made by those skilled in the art shall fall within the protection scope defined by the claims of the present utility model.
Claims
1. A blood dialysis treatment auxiliary blood return device, characterized by: The device comprises an arterial blood leading pipeline, a pump pipeline, an arterial pot, a venous blood returning pipeline and a venous pot; the output end of the arterial blood leading pipeline is connected with the input end of the pump pipeline; the output end of the pump pipeline is connected with the input end of the arterial pot through a pipeline; the output end of the arterial pot is connected with the input end of the dialysis filter through a pipeline; the input end of the venous blood returning pipeline is connected with the output end of the venous pot; the input end of the venous pot is connected with the output end of the dialysis filter through a pipeline; Parallelly connected with the input end and the output end of the arterial pot, the venous pot and the dialysis filter are bridge blood returning pipelines, and the bridge blood returning pipelines are provided with adjusting valves and pipeline clamps.
2. The blood dialysis treatment auxiliary blood return device of claim 1, wherein: The arterial blood leading pipeline and the venous blood returning pipeline are provided with pipeline clamps.
3. The blood dialysis treatment auxiliary blood return device of claim 1, wherein: One side of the arterial blood leading pipeline is provided with an infusion port.
4. The blood dialysis treatment assisted blood return device of claim 1, wherein: The input end of the pump pipeline is provided with an arterial pressure monitoring port, and the output end is provided with a heparin input port.
5. The blood dialysis treatment assisted blood return device of claim 1, wherein: One end of the arterial pot is provided with an arterial pot exhaust pipe, and the arterial pot exhaust pipe is provided with a pipeline clamp.
6. The blood dialysis treatment assisted blood return device of claim 1, wherein: One end of the venous pot is respectively provided with a liquid infusion pipe and a venous pressure monitoring port, and the liquid infusion pipe and the venous pressure monitoring port are provided with pipeline clamps.