Integrated forward pre-flushing hemodialysis pipeline

Abstract

The utility model relates to the technical field of hemodialysis instruments, in particular to an integrated forward pre-flushing hemodialysis pipeline which comprises a three-way connector, and three connectors of the three-way connector are a hemodialysis machine connector directly connected with a hemodialysis machine, a hemodialysis pipe connector connected with an artery end hemodialysis pipeline and a pre-flushing end connector communicated with a pre-flushing pipeline. The pre-flushing pipeline and the artery pre-flushing pipeline are directly connected to the blood inlet end of the dialysis machine through the three-way connector, and the problems that during pre-flushing before dialysis, the number of operation steps is increased, and the risk that a person pollutes a link opening is caused are solved; and when blood is returned after dialysis, the problems that blood is returned at the front end of the artery under natural pressure during blood return, the blood can exceed the access end of the pre-flushing pipeline, the blood cannot enter when the internal fistula pressure is high, and blood coagulation possibly occurs when the pump is stopped to return the arterial blood when no anticoagulant or less anticoagulant exists are directly avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hemodialysis apparatus technical field, specifically is integration positive forward preflush hemodialysis pipeline. BACKGROUND

[0002] In the hemodialysis process, preflush is a crucial step, which helps to remove residual particles and other substances in the extracorporeal circulation blood path, reduces microinflammation, and provides safe and effective dialysis treatment for patients.

[0003] According to the "Blood Purification Standard Operating Procedures (2021 Edition)" (SOP), the correct way of hemodialysis preflush is positive preflush, which requires the use of closed preflush method to ensure that the dialyzer and dialysis pipeline are in a closed and sterile state. The flow direction of the preflush fluid (usually normal saline) should be arterial end → dialyzer → venous end, and this flow direction must be strictly followed, and reverse preflush is not allowed. The preflush fluid port in the prior art is in the middle of the arterial dialysis pipeline, which causes the following problems: first, during preflush before dialysis, the operation steps are increased and there is a risk of human contamination of the connection port; second, there is a section of pipeline between the arterial dialysis pipeline and the dialyzer after dialysis. When blood is returned, the arterial front end returns naturally under pressure, and blood will exceed the preflush pipeline connection end. When the internal fistula pressure is high, there is a situation that the blood does not enter, and when there is no or little anticoagulant, the pump is stopped and the arterial blood is returned, which may cause pipeline coagulation.

[0004] The utility model provides integration positive forward preflush hemodialysis pipeline, aims at solving above -mentioned problem, the information disclosed in this background art section only aims at deepening the understanding of the overall background art of the utility model, and should not be regarded as recognizing or implicitly admitting that the information constitutes the prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides integration positive forward preflush hemodialysis pipeline, solves the problem raised in the above background.

[0006] The utility model discloses integration positive forward preflush hemodialysis pipeline, including tee joint, three interfaces of tee joint are as follows: blood transfusion machine interface directly connected with dialysis machine, blood transfusion pipe joint connected with arterial end blood transfusion pipeline, preflush end joint intercommunication with preflush pipeline;

[0007] The arterial end blood transfusion pipeline is connected with a needle connecting hose through the hose joint one, and a dialysis puncture needle is arranged at the end of the needle connecting hose; the preflush pipeline is connected with a saline connecting hose through the hose joint two, and the end of the saline connecting hose is connected to a physiological saline input end. A pipe clamp one for clamping the arterial end blood transfusion pipeline is arranged on the arterial end blood transfusion pipeline, and a pipe clamp two for clamping the preflush pipeline is arranged on the preflush pipeline.

[0008] Further, the tee joint is integrally formed by medical pp plastic, and the PP plastic is a semi-crystalline material with high melting point, good heat resistance, and can be sterilized at a temperature above 100 DEG C, so that the PP plastic can be used after sterilization, thereby saving the cost of consumables.

[0009] Further, the upper end of the needle connecting hose is connected to the hose joint one through one of insertion and screw thread cooperation, and the upper end of the saline connecting hose is connected to the hose joint one through one of insertion and screw thread cooperation, so that the hose joint one can be conveniently replaced.

[0010] Further, the pipe clamp two is arranged on the pre-flushing pipeline close to the hose joint two, and the pipe clamp one is arranged on the hemodialysis pipeline close to the hose joint one, so that blood or physiological saline can be prevented from remaining in the pipeline.

[0011] The pre-flushing before dialysis comprises the following steps,

[0012] In the first step, the physiological saline inlet is prepared, and bottled or bagged physiological saline is hung on an infusion support; in the second step, the hemodialysis machine interface of the tee joint is connected to the dialysis machine, so that physiological saline can flow into the dialysis machine smoothly; in the third step, the blood pump is started, the start / stop key on the monitor is pressed, and the initial blood pump flow rate is set, generally 80-100 ml / min; the flow rate is helpful to the slow and stable flow of physiological saline through the dialysis pipeline and the dialysis machine; in the fourth step, the liquid level of the venous jug is adjusted to an appropriate position (for example, 2 / 3 or 3 / 4), and the flushing is continued to exhaust the air in the dialyzer membrane; the red and blue membrane external joints are connected according to the machine prompt, and the physiological saline is flushed in and out of the membrane at the same time; at this time, the blood pump flow rate can be set to 200-300 ml / min; in the fifth step, after the pre-flushing is completed, the hemodialysis pipeline is connected to the internal arteriovenous fistula of a patient, and the subsequent steps of dialysis are started; in the sixth step, after the dialysis, the blood is returned from the arterial end, the physiological saline amount of the returned blood is ensured to be sufficient (generally greater than 200 ml), the blood flow rate is reduced to below 100 ml / min, the pipe clamp one is closed and the pipe clamp two is opened, the blood remaining in the side pipeline is returned to the patient's body by using the natural gravity for about 20-30 seconds, and the blood in the hemodialysis pipeline is returned to the patient's body; in the seventh step, the needle is pulled out, the dialysis pipeline is closed, and a sterile cotton ball is covered on the needle hole and pressed to stop bleeding.

[0013] The utility model has the advantages of:

[0014] The pre-flushing pipeline is directly connected to the dialysis machine blood inlet end together with the arterial pre-flushing pipeline by using the tee joint, so that the problems of increased operation steps and the risk of human pollution of the joint during the pre-flushing before dialysis are solved; and during the blood return after dialysis, the natural pressure blood return at the arterial front end during the blood return is directly avoided, the blood can exceed the pre-flushing pipeline connection end, the internal fistula pressure is large, the blood return does not enter in the case, the pump is stopped, the blood return is performed, and the anticoagulant is not used or the anticoagulant is used in small amount, so that the problem of pipeline blood coagulation is likely to occur.

[0015] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the following is a preferred embodiment of the present application and the accompanying drawings are described in detail as follows. The specific embodiment of the present application is given in detail by the following examples and their accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure diagram of the integrated forward preflush hemodialysis pipeline provided by an embodiment of the present application is shown in the figure.

[0017] Figure 2 The structure explosion diagram of the integrated forward preflush hemodialysis pipeline provided by an embodiment of the present application is shown in the figure.

[0018] In the drawings, the component list represented by each number is as follows:

[0019] 1, dialysis machine; 2, three-way joint; 201, hemodialysis machine interface; 202, hemodialysis tube joint; 203, preflush end joint; 3, arterial end hemodialysis pipeline; 4, preflush pipeline; 5, hose joint one; 6, hose joint two; 7, needle connecting hose; 8, saline connecting hose; 9, pipe clamp one; 10, pipe clamp two; 11, puncture needle; 12, physiological saline input end. DETAILED DESCRIPTION

[0020] The wound protector of the present application will be described in more detail below in combination with the drawings and through specific embodiments.

[0021] As shown in Figure 1 -2:

[0022] The integrated forward preflush hemodialysis pipeline of the present application comprises a three-way joint 2, and the three interfaces of the three-way joint 2 are respectively: a hemodialysis machine interface 201 directly connected with a dialysis machine 1, a hemodialysis tube joint 202 connected with an arterial end hemodialysis pipeline 3, and a preflush end joint 203 communicated with a preflush pipeline 4.

[0023] The arterial end hemodialysis pipeline 3 is connected with a needle connecting hose 7 through a hose joint one 5, and the needle connecting hose 7 is provided with a dialysis puncture needle 11 at the end; the preflush pipeline 4 is connected with a saline connecting hose 8 through a hose joint two 6, and the saline connecting hose 8 is connected to a physiological saline input end 12 at the end. The arterial end hemodialysis pipeline 3 is provided with a pipe clamp one 9 for clamping the arterial end hemodialysis pipeline 3, and the preflush pipeline 4 is provided with a pipe clamp two 10 for clamping the preflush pipeline 4.

[0024] The tee joint 2 is made of medical pp plastic by one-piece forming. The needle connecting hose 7 is connected with the hose joint 1 5 by one of insertion and screw thread cooperation. The saline connecting hose 8 is connected with the hose joint 1 5 by one of insertion and screw thread cooperation. The tube clamp 2 10 is arranged on the pre-flushing pipeline 4 near the hose joint 2 6. The tube clamp 1 9 is arranged on the hemodialysis pipeline near the hose joint 1 5, which can prevent blood or physiological saline from remaining in the pipeline.

[0025] The pre-flushing before dialysis includes the following steps,

[0026] Firstly, the physiological saline input end 1 2 is prepared. The bottled or bagged physiological saline is hung on the infusion stand.

[0027] Secondly, the hemodialysis machine interface 201 of the tee joint 2 is connected with the dialysis machine 1, so that the physiological saline can flow into the dialysis machine 1 smoothly.

[0028] Thirdly, the blood pump is started. The start / stop key on the monitor is pressed, and the initial blood pump flow rate is set, which is usually 80-100 ml / min. This flow rate helps the physiological saline to flow through the dialysis pipeline and the dialysis machine 1 slowly and stably.

[0029] Fourthly, the liquid level of the venous jug is adjusted to an appropriate position (such as 2 / 3 or 3 / 4), and the flushing is continued to exhaust the air in the dialyzer membrane. According to the machine prompt, the red and blue membrane external connectors are connected, and the physiological saline is flushed in and out of the membrane at the same time. At this time, the blood pump flow rate can be set to 200-300 ml / min.

[0030] Fifthly, the pre-flushing is completed, the hemodialysis pipeline is connected with the patient's arteriovenous fistula, and the subsequent steps of dialysis are started.

[0031] Sixthly, the blood is returned at the arterial end after dialysis, the physiological saline amount for blood return is ensured to be sufficient (usually greater than 200 ml), the blood flow rate is reduced to below 100 ml / min, the tube clamp 1 9 is closed and the tube clamp 2 10 is opened, the blood remaining in the side tube is returned for about 20-30 seconds, and the blood in the hemodialysis pipeline is returned to the patient's body by natural gravity.

[0032] Seventhly, the needle is pulled out, the dialysis pipeline is closed, and the sterile cotton ball is covered on the needle hole and pressed to stop bleeding.

[0033] The preflush pipe 4 is directly connected to the blood inlet end of the dialysis machine 1 together with the arterial preflush pipe 4 by using the tee joint 2, so that the problem of increasing operation steps and the risk of human pollution of the connection port during preflush before dialysis is solved; and during blood return after dialysis, the problem of blood return not going in when the arterial front end natural pressure is returned, blood exceeding the preflush pipe connection end, and the problem of pipe blood coagulation when the pump is stopped and the arterial blood is returned without or with less anticoagulant are directly avoided.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] The exemplary embodiments of the present application are described in detail above with reference to preferred embodiments, however, it can be understood by those skilled in the art that various modifications and improvements can be made to the above specific embodiments without departing from the concept of the present application, and various combinations of the technical features and structures proposed by the present application can be made without exceeding the protection scope of the present application.

Claims

1. An integrated forward pre- flush hemodialysis tubing line, characterized in that: The three-way joint comprises three interfaces, i.e., a hemodialysis machine interface connected with a dialysis machine, a hemodialysis tube joint connected with an arterial end hemodialysis tube, and a pre-filling end joint connected with a pre-filling tube; The arterial end hemodialysis tube is connected with a needle connecting hose through a hose joint one, and a dialysis puncture needle is arranged at the end of the needle connecting hose; the pre-filling tube is connected with a saline connecting hose through a hose joint two, and the end of the saline connecting hose is connected to a physiological saline input end; A tube clamp one for clamping the arterial end hemodialysis tube is arranged on the arterial end hemodialysis tube, and a tube clamp two for clamping the pre-filling tube is arranged on the pre-filling tube.

2. The integrated forward pre- flush hemodialysis tubing of claim 1, wherein: The three-way joint is integrally formed by using medical pp plastic.

3. The integrated forward pre- flush hemodialysis tubing of claim 1, wherein: The upper end of the needle connecting hose is connected with the hose joint one through one of insertion and thread cooperation; the upper end of the saline connecting hose is connected with the hose joint one through one of insertion and thread cooperation.

4. The integrated forward pre- flush hemodialysis tubing of claim 1, wherein: The tube clamp two is arranged on the pre-filling tube close to the hose joint two, and the tube clamp one is arranged on the hemodialysis tube close to the hose joint one.

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