Anti-leakage hemodialyzer with four Hansen interfaces

Abstract

The invention discloses an anti-leakage hemodialyzer with four Hansen connectors. Comprising a hemodialyzer body, a first Hansen opening formed in the upper portion of the hemodialyzer body, a second Hansen opening formed in the lower portion of the hemodialyzer body, a third Hansen opening formed in the side face of the hemodialyzer body and a fourth Hansen opening formed in the side face of the hemodialyzer body and located below the first Hansen opening. The first Hansen opening is a blood inlet, the second Hansen opening is a blood outlet, the third Hansen opening is a dialysate outlet, and the fourth Hansen opening is a dialysate inlet; the sealing device has the advantages of being good in sealing structure design, high in pressure adaptation characteristic and high in clinical application value.

Description

Technical Field

[0001] This invention relates to the field of hemodialysis machine technology, and in particular to a four-Hansen interface leak-proof hemodialysis machine. Background Technology

[0002] In clinical use of hemodialysis machines, leakage at the Luer interface is a safety incident requiring immediate attention. The main causes are: The Luer connector is not fully tightened: If it is only manually tightened to the surface (not reaching the locked position), even if there is no obvious looseness on the surface, the high pressure blood flow during dialysis (normal dialysis blood pressure range is 100-180 mmHg, about 13.3-24 kPa, and can reach more than 300 kPa in emergency situations) will leak from the tiny gaps. Uneven force during connection: Uneven force or connection at an angle can cause misalignment of the male and female threads. Even if it appears to be tightened, there will be tiny gaps on the sealing surface (usually a conical or spherical fit structure), which can form a "leakage channel" under high pressure. Abnormal system pressure: During dialysis, sudden changes in the blood pump speed (such as sudden acceleration or restarting due to failure) can cause a sharp increase in pressure within the blood circuit. At the same time, blockage in the venous circuit (such as incomplete opening of the venous clamp, tubing twisting, or compression from hematoma at the patient's venous puncture site) can cause a sudden increase in venous pressure. When the system pressure exceeds the rated pressure resistance range of the Luer interface (industry standard requires ≥300kPa), even if the interface connection is correct, leakage may occur due to pressure exceeding the sealing limit. In addition, malfunctions of the dialysis machine pressure sensor and increased circuit resistance caused by dialyzer clotting can also indirectly lead to abnormal fluctuations in local pressure, exacerbating the risk of Luer interface seal failure. In view of the above, it is necessary to improve the existing hemodialysis machines to meet the current needs of hemodialysis machine use. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a four-Hansen interface leak-proof hemodialysis machine, including a hemodialysis machine body, a first Hansen port disposed above the hemodialysis machine body, a second Hansen port disposed below the hemodialysis machine body, a third Hansen port disposed on the side of the hemodialysis machine body, and a fourth Hansen port disposed on the side of the hemodialysis machine body and located below the first Hansen port. The first Hansen port is a blood inlet, the second Hansen port is a blood outlet, the third Hansen port is a dialysate outlet, and the fourth Hansen port is a dialysate inlet.

[0004] As a further supplement to this technical solution, the routing of the instrument connection tubing during hemodialysis is as follows: patient arterial end → first dialysis tubing → dialyzer → second dialysis tubing → patient venous end.

[0005] As a further supplement to this technical solution, the first dialysis tubing is an arterial tubing, and the second dialysis tubing is a venous tubing. As a further supplement to this technical solution, the dialysis membrane of the dialyzer is a semi-permeable membrane.

[0006] As a further supplement to this technical solution, the first Hansen interface, the second Hansen interface, the third Hansen interface, and the fourth Hansen interface adopt a combined structural design of planar sealing and double locking.

[0007] As a further supplement to this technical solution, the dual locking mechanism is a collaborative design of threaded fastening and snap-lock positioning.

[0008] A method for operating a four-Hansen interface leak-proof hemodialysis machine includes the following steps: Step 1: Clean the dialysate and introduce it into the dialyzer through the fourth Hansen interface; Step 2: The dialyzer returns blood to the patient's bloodstream through the second Hansen interface; Step 3: The patient's blood, which has been circulating in the body, flows to the blood pump and then to the anticoagulant machine; Step 4: Next, the blood enters the dialyzer through the first Hansen interface; Step 5: Discharge the waste dialysis fluid through the third Hansen interface.

[0009] The beneficial effects of using the Hansen interface in hemodialysis machines are as follows: Sealing Structure Design: The Hansen interface innovatively adopts a combined design of planar sealing and double locking. The planar sealing process ensures high-precision fit of the interface contact surface, effectively reducing gaps. The double locking mechanism (such as the synergistic design of threaded fastening and snap-fit ​​positioning) further enhances structural stability, firmly limiting the displacement and deformation of the interface under pressure, fundamentally avoiding sealing failure caused by misalignment of the sealing surface, and providing reliable structural protection for the hemodialysis process. The Hansen interface, through the synergistic design of snap-fit ​​locking and thick-walled structure, significantly improves tensile strength. The high-strength snap-fit ​​is mechanically optimized for a stable engagement; the thickened tube wall enhances load-bearing capacity, disperses tensile force to prevent cracking, can withstand equipment vibration and slight dragging, and can resist accidental pulling, preventing interface detachment and blood leakage, providing reliable safety for hemodialysis treatment. Pressure Adaptability: This interface is specifically optimized for the working pressure scenarios of hemodialysis peristaltic pumps. It can adapt to the normal pressure (usually 0.1-0.5MPa) and instantaneous peak pressure during equipment operation. Through a unique structural mechanics design, the interface can evenly distribute pressure load in medium and high pressure environments, significantly reducing local stress concentration and avoiding impact damage to the sealing surface caused by uneven pressure distribution. Even under extreme pressure conditions, it can maintain excellent sealing performance, completely eliminating the risk of blood leakage and ensuring the safety and continuity of hemodialysis treatment. Clinical Application Value: In hemodialysis treatment, blood leakage not only causes blood loss in patients but may also lead to serious complications such as infection and hemolysis. Hansen's high-pressure sealing stability solves this core pain point from the equipment connection level. Its structural design takes into account both sealing performance and ease of operation, allowing medical staff to quickly complete interface connection and disassembly. It supports one-handed connection and disconnection operations, and the tightening force of the connector does not need to be excessively controlled (tighten until the buckle is in place), reducing the operational intensity of medical staff. It can also maintain consistent sealing performance over a long period of time, making it suitable for the routine use of various hemodialysis equipment, especially adaptable to complex treatment scenarios with high flow and high pressure, providing strong support for the safety and efficiency of clinical treatment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the hemodialysis device of the present invention; Figure 2 This is the routing of the instrument connection tubing during hemodialysis according to the present invention; Figure 3 This is a flowchart illustrating the hemodialysis process of the present invention; In the diagram, 1 is the hemodialysis machine body; 2 is the first Hansen interface; 3 is the second Hansen interface; 4 is the third Hansen interface; and 5 is the fourth Hansen interface. Detailed Implementation

[0011] To facilitate a clearer understanding of this technical solution for those skilled in the art, the following will be described in conjunction with the appendix. Figure 1-3 The technical solution of the present invention is described in detail below: like Figure 1 As shown, a four-Hansen interface leak-proof hemodialysis machine includes a hemodialysis machine body, a first Hansen port disposed above the hemodialysis machine body, a second Hansen port disposed below the hemodialysis machine body, a third Hansen port disposed on the side of the hemodialysis machine body, and a fourth Hansen port disposed on the side of the hemodialysis machine body and below the first Hansen port. The first Hansen port is a blood inlet, the second Hansen port is a blood outlet, the third Hansen port is a dialysate outlet, and the fourth Hansen port is a dialysate inlet.

[0012] like Figure 2 As shown, the routing of the equipment connection tubing during hemodialysis is as follows: patient's arterial end → first dialysis tubing (arterial tubing) → dialyzer → second dialysis tubing (venous tubing) → patient's venous end.

[0013] The dialyzer's dialysis membrane is a semi-permeable membrane, which can filter blood during hemodialysis treatment to remove toxins.

[0014] The first, second, third, and fourth Hansen interfaces employ a combined planar sealing and double-locking structural design. The double-locking mechanism combines threaded fastening with snap-fit ​​positioning. The sealing structure design innovatively utilizes a combination of planar sealing and double-locking. The planar sealing process ensures high-precision contact between the interface surfaces, effectively reducing gaps. The double-locking mechanism (such as the combined design of threaded fastening and snap-fit ​​positioning) further enhances structural stability, firmly limiting interface displacement and deformation under pressure, fundamentally preventing sealing failure due to misalignment of the sealing surface, and providing reliable structural protection for the hemodialysis process. The Hansen interfaces, through a combination of snap-fit ​​locking and thick-walled structure design, significantly improve tensile strength. The high-strength snap-fit ​​is mechanically optimized for a stable engagement; the thickened tube wall enhances load-bearing capacity, disperses tensile force to prevent cracking, and can withstand equipment vibration and minor dragging. It can resist accidental pulling, preventing interface detachment and leakage, providing reliable safety for hemodialysis treatment.

[0015] like Figure 3 As shown, a method for operating a four-Hansen interface leak-proof hemodialysis machine includes the following steps: Step 1: Clean the dialysate and introduce it into the dialyzer through the fourth Hansen interface; Step 2: The dialyzer returns blood to the patient's bloodstream through the second Hansen interface; Step 3: The patient's blood, which has been circulating in the body, flows to the blood pump and then to the anticoagulant machine; Step 4: Next, the blood enters the dialyzer through the first Hansen interface; Step 5: Discharge the waste dialysis fluid through the third Hansen interface.

[0016] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A four-Hansen interface leak-proof hemodialysis machine, characterized in that, The hemodialysis machine includes a hemodialysis unit, a first Hansen port located above the hemodialysis unit, a second Hansen port located below the hemodialysis unit, a third Hansen port located on the side of the hemodialysis unit, and a fourth Hansen port located on the side of the hemodialysis unit and below the first Hansen port. The first Hansen port is a blood inlet, the second Hansen port is a blood outlet, the third Hansen port is a dialysate outlet, and the fourth Hansen port is a dialysate inlet.

2. The four-Hansen interface leak-proof hemodialysis machine according to claim 1, characterized in that, The routing of the equipment connection tubing during hemodialysis is as follows: patient arterial end → first dialysis tubing → dialyzer → second dialysis tubing → patient venous end.

3. A four-Hansen interface leak-proof hemodialysis machine according to claim 2, characterized in that, The first dialysis tubing is an arterial tubing, and the second dialysis tubing is a venous tubing.

4. A four-Hansen interface leak-proof hemodialysis machine according to claim 3, characterized in that, The dialysis membrane of the dialyzer is a semi-permeable membrane.

5. A four-Hansen interface leak-proof hemodialysis machine according to claim 1, characterized in that, The first Hansen interface, the second Hansen interface, the third Hansen interface, and the fourth Hansen interface adopt a combined structural design of planar sealing and double locking.

6. A four-Hansen interface leak-proof hemodialysis machine according to claim 5, characterized in that, The dual locking mechanism is a collaborative design of threaded fastening and snap-lock positioning.

7. The operating method of a four-Hansen interface leak-proof hemodialysis machine according to any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Clean the dialysate and introduce it into the dialyzer through the fourth Hansen interface; Step 2: The dialyzer returns blood to the patient's bloodstream through the second Hansen interface; Step 3: The patient's blood, which has been circulating in the body, flows to the blood pump and then to the anticoagulant machine; Step 4: Next, the blood enters the dialyzer through the first Hansen interface; Step 5: Discharge the waste dialysis fluid through the third Hansen interface.

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