I-shaped multifunctional connecting pipe for blood perfusion

Abstract

The utility model discloses an I-shaped multifunctional connecting tube for blood perfusion, which belongs to the technical field of blood perfusion and comprises a first connecting tube, a second connecting tube and a third connecting tube, a first end point of the first connecting tube is communicated with a dialyzer, and a second end point of the first connecting tube is communicated with an outlet of a perfusion device; the first end point of the second connecting pipe is communicated with the artery end of the extracorporeal circulation pipeline, and the second end point of the second connecting pipe is communicated with the perfusion device inlet; the two ends of the communicating pipe are communicated with the first connecting pipe and the second connecting pipe respectively; one end of the waste discharge pipe is communicated with an external waste liquid bag through a plug, and the other end of the waste discharge pipe is communicated with the first connecting pipe; and the cutoff part is used for appointing to control the connection and disconnection of the first connecting pipe, the second connecting pipe, the communicating pipe and the waste discharge pipe, so that the purposes of pre-flushing, dialysis and perfusion are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blood perfusion, in particular to an I-shaped multifunctional connecting tube for blood perfusion. Background Art

[0002] During hemodialysis treatment, the hemoperfusion connection tube is an important component that connects the patient's blood vessels, hemodialyzer and hemoperfusion device. Its design and function directly affect the efficiency of treatment and the safety of patients. Traditional hemoperfusion connection methods usually involve disassembling and reinstalling the perfusion device during dialysis, which not only increases the workload of nurses, but also may increase the risk of blood exposure, spillage and contamination, posing a threat to the safety of patients and medical staff.

[0003] In addition, the traditional blood perfusion connection method may cause poor blood flow in the extracorporeal circulation circuit, increase the risk of coagulation, and affect the effect of dialysis treatment. In order to solve the above problems, the utility model provides an I-shaped multifunctional connecting tube for blood perfusion. Utility Model Content

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide an I-shaped multifunctional connecting tube for blood perfusion, which does not require disassembly of the perfusion device during dialysis, reduces the risk of contamination, and reduces the workload of nurses. In addition, the main blood flow is a straight-through flow, which can make the blood flow smoother and reduce the probability of coagulation.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: The utility model provides an I-shaped multifunctional connecting tube for blood perfusion, comprising:

[0006] a first connecting tube, wherein a first end of the first connecting tube is in communication with the dialyzer, and a second end of the first connecting tube is in communication with the outlet of the perfusion device;

[0007] a second connecting tube, wherein a first end of the second connecting tube is connected to an arterial end of the extracorporeal circulation circuit, and a second end of the second connecting tube is connected to an inlet of the perfusion device;

[0008] A connecting pipe, wherein both ends of the connecting pipe are respectively connected to the first connecting pipe and the second connecting pipe, and the first connecting pipe, the second connecting pipe and the connecting pipe form an "I" shape;

[0009] A waste discharge pipe, one end of which is connected to an external waste liquid bag through a plug, and the other end of which is connected to the first connecting pipe, and the connecting port between the waste discharge pipe and the first connecting pipe is located between the connecting pipe and the second end point of the first connecting pipe;

[0010] The flow cut-off part is used to control the opening and closing of the first connecting pipe, the second connecting pipe, the connecting pipe and the waste discharge pipe to achieve the purpose of pre-flushing, dialysis and perfusion.

[0011] Preferably, the interrupter comprises:

[0012] a first fixing card, the first fixing card being installed on a first connecting pipe between the connecting pipe and the waste discharge pipe;

[0013] a second fixing card, wherein the second fixing card is installed on the connecting pipe;

[0014] a third fixing card, the third fixing card being installed on the second connecting pipe and being located between the connecting pipe and the second end point of the second connecting pipe;

[0015] A fourth fixing card, wherein the fourth fixing card is installed on the waste discharge pipe;

[0016] The first fixing card, the second fixing card, the third fixing card and the fourth fixing card have the same structure.

[0017] Preferably, the first fixing card comprises:

[0018] A base, wherein a mounting hole is provided on the base and the base is made of elastic material;

[0019] A clamping rod, the clamping rod being fixedly connected to one end surface of the base;

[0020] A pressure rod, the pressure rod is fixedly connected to the other end surface of the base;

[0021] A fixed extrusion block, wherein the fixed extrusion block is fixedly connected to the base;

[0022] A movable extrusion block, wherein the movable extrusion block is fixedly connected to the pressure rod;

[0023] When the pressure rod is clamped with the clamping rod, the fixed extrusion block and the movable extrusion block cooperate with each other to keep the first connecting pipe in a disconnected state.

[0024] Preferably, the facing surfaces of the fixed extrusion block and the movable extrusion block are both inclined surfaces, and the inclined surfaces on the fixed extrusion block and the movable extrusion block are matched.

[0025] Preferably, the inclined surfaces of the fixed extrusion block and the movable extrusion block are both fixedly connected with teeth, and when the pressure rod is engaged with the clamping rod, the teeth on the fixed extrusion block and the teeth on the movable extrusion block are engaged with each other.

[0026] Preferably, the outer side surface of the clamping rod is an inclined surface, and the upper end surface of the pressure rod is matched with the inclined surface of the clamping rod.

[0027] Preferably, a convex rod is fixedly connected to the outer side surface of the upper end of the pressure rod, and a clamping groove matched with the convex rod is formed on the inner side surface of the clamping rod.

[0028] The beneficial effects of the utility model are:

[0029] The utility model can control the opening and closing of the first connecting pipe, the second connecting pipe, the connecting pipe and the waste discharge pipe by setting the flow cut-off part, thereby realizing that the perfusion device does not need to be disassembled during the dialysis process, reducing the risk of contamination and the workload of nurses.

[0030] The first connecting tube, the second connecting tube and the connecting tube of the utility model are interconnected to form an "I" shape, so that the blood flows in a straight-through manner. During use, the blood flow can be smoother and the probability of blood coagulation can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 The present invention is a schematic structural diagram of an I-shaped multifunctional connecting tube for blood perfusion provided in an embodiment of the present invention.

[0033] Figure 2 The connection diagram of the base, the clamping rod and the pressure rod of the utility model is shown in FIG. Figure Ⅰ .

[0034] Figure 3 The connection diagram of the base, the clamping rod and the pressure rod of the utility model is shown in FIG. Figure II .

[0035] Figure 4 It is a schematic diagram of the clamping state of the pressure rod and the clamping rod of the utility model.

[0036] Description of reference numerals:

[0037] 1. First connecting pipe, 2. Second connecting pipe, 3. Connecting pipe, 4. Waste discharge pipe, 5. Shut-off part, 501. First fixing card, 502. Second fixing card, 503. Third fixing card, 504. Fourth fixing card, 505. Base, 506. Clamping rod, 507. Pressing rod, 508. Fixed extrusion block, 509. Movable extrusion block, 510. Teeth, 511. Protruding rod, 512. Card slot. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Embodiment 1:

[0040] like Figures 1 to 4 As shown, the utility model provides an I-shaped multifunctional connecting tube for blood perfusion, comprising a first connecting tube 1, the first connecting tube 1 is connected to the second connecting tube 2 through a connecting tube 3, and the first end point of the first connecting tube 1 (such as Figure 1 A point as shown in the figure) is connected to the dialyzer, and the second end point of the first connecting tube 1 (as shown in the figure) is connected to the dialyzer. Figure 1 The first end point of the second connecting tube 2 (point B as shown) is connected to the outlet of the perfusion device, and the first end point of the second connecting tube 2 (point B as shown) is connected to the outlet of the perfusion device. Figure 1 The second end point of the second connecting tube 2 (as shown in point C) is connected to the arterial end of the extracorporeal circulation line. Figure 1 The first connecting tube 1, the second connecting tube 2 and the connecting tube 3 form an "I" shape, and the main blood flow is a straight-through flow, which can make the blood flow smoother and reduce the probability of coagulation.

[0041] A waste discharge pipe 4 is provided between the second end point of the first connecting pipe 1 and the connecting port of the first connecting pipe 1 and the connecting pipe 3. One end of the waste discharge pipe 4 is connected to the first connecting pipe 1, and the other end is connected to an external waste liquid bag.

[0042] An I-shaped multifunctional connecting tube for blood perfusion also includes a cut-off portion 5, which can control the opening and closing of the first connecting tube 1, the second connecting tube 2, the connecting tube 3 and the waste discharge tube 4 to achieve the purpose of pre-flushing, dialysis and perfusion.

[0043] The cut-off portion 5 includes a first fixing card 501, a second fixing card 502, a third fixing card 503 and a fourth fixing card 504. The first fixing card 501 is installed on the first connecting pipe 1 between the connecting pipe 3 and the waste discharge pipe 4, the second fixing card 502 is installed on the connecting pipe 3, the third fixing card 503 is installed on the second connecting pipe 2 and is located between the second end points of the connecting pipe 3 and the second connecting pipe 2, and the fourth fixing card 504 is installed on the waste discharge pipe 4.

[0044] During pre-flushing, the first fixing card 501 and the second fixing card 502 can be controlled to be in a closed state so that the first connecting tube 1 and the connecting tube 3 are cut off at the specified position, while the third fixing card 503 and the fourth fixing card 504 are in an open state so that the second connecting tube 2 and the waste discharge tube 4 are in a flowing state. At this time, the pre-flushing liquid will directly enter the interior of the perfusion device through the second connecting tube 2, then enter the interior of the first connecting tube 1 through the perfusion device, and finally be discharged into the interior of the waste liquid bag through the waste discharge tube 4, thereby completing the pre-flushing work.

[0045] When perfusion and dialysis are performed simultaneously, the second fixing card 502 and the fourth fixing card 504 can be in a closed state, so that the connecting tube 3 and the waste discharge tube 4 are cut off at the designated positions, while the first fixing card 501 and the third fixing card 503 are in an open state. At this time, blood enters the interior of the perfusion device through the second connecting tube 2, then enters the interior of the first connecting tube 1 through the perfusion device, and finally enters the dialyzer through the first connecting tube 1 to achieve dialysis.

[0046] When performing dialysis, the first fixing card 501, the third fixing card 503 and the fourth fixing card 504 can be in a closed state, so that the first connecting tube 1, the second connecting tube 2 and the waste discharge tube 4 are cut off at designated positions, and the second fixing card 502 is in an open state. At this time, blood enters the interior of the connecting tube 3 through the second connecting tube 2, then enters the interior of the first connecting tube 1 through the connecting tube 3, and finally directly enters the interior of the dialyzer through the first connecting tube 1 for dialysis.

[0047] The first fixing card 501 , the second fixing card 502 , the third fixing card 503 and the fourth fixing card 504 have the same structure.

[0048] Embodiment 2:

[0049] The first fixing card 501 includes a base 505, and a mounting hole is opened on the base 505. The diameter of the mounting hole is adapted to the outer diameter of the corresponding pipeline (for example, the mounting hole on the base 505 installed on the first connecting pipe 1 is adapted to the outer diameter of the first connecting pipe 1, so that the base 505 can be stably installed on the first connecting pipe 1), the material of the base 505 is an elastic material (for example, elastic plastic can be used), the two ends of the base 505 are arc-shaped, and one end of the base 505 is fixedly connected to a clamping rod 506, and the other end is fixedly connected to a pressure rod 507, a fixed extrusion block 508 is fixedly connected to the base 505, and a movable extrusion block 509 is fixedly connected to the pressure rod 507. When the clamping rod 506 and the clamping rod 506 are clamped with each other, the movable extrusion block 509 can cooperate with the fixed extrusion block 508 to extrude the corresponding pipeline, so that the corresponding pipeline is deformed and the inner walls of the pipeline are fitted together, thereby achieving flow interruption.

[0050] The outer side surface of the clamping rod 506 is an inclined surface, and the side of the clamping rod 506 away from the base 505 is an outer side surface (such as Figure 2 As shown in the figure, the upper end surface of the pressure rod 507 is also an inclined surface, and the inclined surface on the pressure rod 507 is adapted to the inclined surface of the clamping rod 506. When the pressure rod 507 is pressed toward the direction of the corresponding base 505, the upper end surface of the pressure rod 507 can be better clamped with the clamping rod 506.

[0051] In order to further secure the connection between the pressure rod 507 and the locking rod 506, a protrusion 511 is provided on the pressure rod 507 and a locking groove 512 is provided on the locking rod 506. When the pressure rod 507 and the locking rod 506 are engaged with each other, the pressure rod 507 will be engaged with the locking groove 512, thereby securing the connection between the pressure rod 507 and the locking rod 506.

[0052] Embodiment three:

[0053] The facing surfaces of the fixed extrusion block 508 and the movable extrusion block 509 are both inclined surfaces, and the inclined surfaces on the fixed extrusion block 508 and the movable extrusion block 509 are adapted to each other. The setting of the inclined surfaces can form a fitting inclined surface at the closed part of the inner wall of the corresponding pipeline after the pressure rod 507 and the clamping rod 506 are clamped with each other, thereby increasing the closed area and achieving a better flow-breaking effect.

[0054] The inclined surfaces of the fixed extrusion block 508 and the movable extrusion block 509 are fixedly connected with teeth 510, and when the pressure rod 507 is engaged with the clamping rod 506, the teeth 510 on the fixed extrusion block 508 and the teeth 510 on the movable extrusion block 509 are engaged with each other, which can further improve the flow interruption effect.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An I-shaped multifunctional connecting tube for blood perfusion, characterized in that: include: A first connecting tube (1), wherein a first end point of the first connecting tube (1) is in communication with the dialyzer, and a second end point of the first connecting tube (1) is in communication with an outlet of the perfusion device; A second connecting tube (2), wherein a first end of the second connecting tube (2) is in communication with an arterial end of the extracorporeal circulation circuit, and a second end of the second connecting tube (2) is in communication with an inlet of the perfusion device; A connecting pipe (3), wherein both ends of the connecting pipe (3) are respectively connected to the first connecting pipe (1) and the second connecting pipe (2), and the first connecting pipe (1), the second connecting pipe (2) and the connecting pipe (3) form an "I" shape; A waste discharge pipe (4), one end of which is connected to an external waste liquid bag via a plug, and the other end of which is connected to the first connecting pipe (1), and the connecting port between the waste discharge pipe (4) and the first connecting pipe (1) is located between the connecting pipe (3) and the second end point of the first connecting pipe (1); The flow cut-off portion (5) is used to control the opening and closing of the first connecting tube (1), the second connecting tube (2), the connecting tube (3) and the waste discharge tube (4) to achieve the purposes of pre-flushing, dialysis and perfusion.

2. The I-shaped multifunctional connecting tube for blood perfusion according to claim 1, characterized in that: The interrupter (5) comprises: A first fixing card (501), the first fixing card (501) being installed on the first connecting pipe (1) between the connecting pipe (3) and the waste discharge pipe (4); A second fixing card (502), the second fixing card (502) being mounted on the connecting pipe (3); A third fixing card (503), the third fixing card (503) being mounted on the second connecting pipe (2) and being located between the connecting pipe (3) and the second end point of the second connecting pipe (2); a fourth fixing card (504), the fourth fixing card (504) being installed on the waste discharge pipe (4); The first fixing card (501), the second fixing card (502), the third fixing card (503) and the fourth fixing card (504) have the same structure.

3. The I-shaped multifunctional connecting tube for blood perfusion according to claim 2, characterized in that: The first fixing card (501) comprises: A base (505), wherein a mounting hole is provided on the base (505), and the base (505) is made of an elastic material; A clamping rod (506), wherein the clamping rod (506) is fixedly connected to one end surface of the base (505); A pressure rod (507), wherein the pressure rod (507) is fixedly connected to the other end surface of the base (505); A fixed extrusion block (508), wherein the fixed extrusion block (508) is fixedly connected to the base (505); A movable extrusion block (509), wherein the movable extrusion block (509) is fixedly connected to the pressure rod (507); When the pressure rod (507) is engaged with the clamping rod (506), the fixed extrusion block (508) and the movable extrusion block (509) cooperate with each other to keep the first connecting pipe (1) in a disconnected state.

4. The I-shaped multifunctional connecting tube for blood perfusion as claimed in claim 3, characterized in that: The facing surfaces of the fixed extrusion block (508) and the movable extrusion block (509) are both inclined surfaces, and the inclined surfaces on the fixed extrusion block (508) and the movable extrusion block (509) are matched.

5. The I-shaped multifunctional connecting tube for blood perfusion as claimed in claim 4, characterized in that: The fixed extrusion block (508) and the movable extrusion block (509) are both fixedly connected with teeth (510) on their inclined surfaces, and when the pressure rod (507) is engaged with the clamping rod (506), the teeth (510) on the fixed extrusion block (508) and the teeth (510) on the movable extrusion block (509) engage with each other.

6. The I-shaped multifunctional connecting tube for blood perfusion according to claim 3, characterized in that: The outer side surface of the clamping rod (506) is an inclined surface, and the upper end surface of the pressing rod (507) is matched with the inclined surface of the clamping rod (506).

7. The I-shaped multifunctional connecting tube for blood perfusion according to claim 5, characterized in that: A convex rod (511) is fixedly connected to the outer side surface of the upper end of the pressure rod (507), and a clamping groove (512) matching the convex rod (511) is provided on the inner side surface of the clamping rod (506).

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