An ECMO and CRRT connecting tube

Abstract

This utility model discloses an ECMO and CRRT connecting tube, relating to the field of medical device technology. It includes a long tube (first), a short tube, and a second long tube. A rotary switch is fixedly installed between the first and short tubes, and another rotary switch is installed between the short tube and the second long tube. Connector head one and connector head two are respectively installed on the two rotary switches. The first and second long tubes, and connector heads one and two, are respectively connected to an ECMO machine and a CRRT machine. Through this technical solution, the first long tube, rotary switch, short tube, second long tube, connector head one, and connector head two are all integrated into one unit, greatly reducing installation difficulty, improving efficiency, preventing loosening of the tubing, and ensuring connection safety even under high pressure.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ECMO and CRRT connecting tube. Background Technology

[0002] Extracorporeal membrane oxygenation (ECMO) and continuous renal replacement therapy (CRRT) are both treatments. ECMO replaces the patient's cardiopulmonary function, allowing them to rest and buy time for treatment. CRRT replaces the patient's kidney function, helping damaged kidneys eliminate excess water and toxins. When a patient experiences problems with both the cardiopulmonary and renal systems simultaneously, combined treatment is required, connecting the ECMO and CRRT machines. Currently, most connections use a post-membrane blood drainage and pre-membrane blood return method. This method, especially with high-flow ECMO, can cause high pressure in the CRRT return veins, triggering alarms and increasing the risk of hemolysis. A few use connecting tubing with a T-connector, but this method is prone to loosening. High pressure not only increases CRRT pressure alarms, affecting treatment continuity, but also carries the risk of tubing rupture, leading to red blood cell destruction and hemolysis. Therefore, a dedicated connecting tubing solution is needed to address clinical connection issues, reducing pressure and ensuring better connection safety. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model discloses an ECMO and CRRT connecting tube, characterized by comprising a long tube one, a short tube, and a long tube two. A rotary switch is fixedly installed between the long tube one and the short tube, and a rotary switch is installed between the short tube and the long tube two. Connector one and connector two are respectively mounted on the two rotary switches, and connector one and connector two are respectively connected to the CRRT arterial blood draw end and the CRRT venous blood return end. Long tube one and long tube two are respectively connected to the ECMO membrane pre-filling three-way port. Through this technical solution, the long tube one, rotary switch, short tube, long tube two, connector one, and connector two are all integrated into one unit, which greatly reduces the installation difficulty, improves the efficiency of use, and prevents the tubing from loosening. Furthermore, it will not disconnect under high pressure, ensuring the safety of the connection.

[0004] Furthermore, both ends of the first and second long tubes are male spiral connectors.

[0005] Furthermore, the ends of connector one and connector two are female spiral connectors.

[0006] Furthermore, the rotary switch includes a switch housing, which connects a long tube, a short tube, and a connector. A rotating core is installed inside the switch housing, and the rotating core has openings one, two, and three. Through this technical solution, the rotating core can rotate to correspond with different openings through openings one, two, and three, achieving full connectivity of all three openings, or connectivity of any two openings, facilitating different operations and improving efficiency.

[0007] Furthermore, the openings one, two, and three are located at the lower end of the rotating core, and the rotating core can block the connection ports of the long pipe one, the short pipe, and the connector two by moving downward through the upper end.

[0008] Furthermore, a rotating rod is fixedly mounted on the upper end of the rotating core. The rotating rod has a first fixing groove and a second fixing groove. A cover plate is fixedly mounted on the switch housing, and the cover plate has an elastic ring. The elastic ring cooperates with the first and second fixing grooves to maintain the rotating core at different heights. Through the above technical solution, the first and second fixing grooves, when engaged with the elastic ring, can lock the upper and lower positions and maintain rotation. When engaged with the first fixing groove, all openings are completely blocked.

[0009] Furthermore, a switch handle is fixedly mounted on the upper end of the rotating rod.

[0010] Furthermore, a slide rod is fixedly mounted on the lower end of the rotating core, a protective plate is fixedly mounted on the lower end of the slide rod, a spring is fixedly mounted on the protective plate, and a washer is fixedly mounted on the spring. The washer is rotatably connected to the bottom end of the switch housing. Through the above technical solution, when all openings in the upper part of the rotating core are blocked, the spring is in a compressed state. During reset, the spring assists in reset, and when the elastic ring engages with the second fixing groove, the spring provides additional height maintenance for the rotating core.

[0011] The advantages of this utility model compared with the prior art are:

[0012] (1) Through the technical solution of this utility model, the long pipe one, rotary switch, short pipe, long pipe two, connector one, and connector two are all set as one unit, which greatly reduces the installation difficulty, improves the efficiency of use, and will not cause the pipeline to loosen. It will not disconnect when the pressure is high, thus ensuring the safety of the connection.

[0013] (2) Through the technical solution of this utility model, the rotating core can be connected to different openings through opening one, opening two and opening three, so that all three openings can be connected, or any two openings can be connected, which facilitates different operations and improves efficiency.

[0014] (3) Through the technical solution of this utility model, the first and second fixed grooves can lock the upper and lower positions and maintain rotation when they cooperate with the elastic ring, and completely block all openings when they cooperate with the first fixed groove.

[0015] (4) Through the technical solution of this utility model, when all openings are blocked at the top of the rotating core, the spring is in a compressed state. When resetting, the spring can assist in resetting and when the elastic ring and the fixed groove are in tandem, the spring plays an additional role in maintaining the height of the rotating core. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an ECMO and CRRT connecting tube according to an embodiment of the present invention.

[0017] Figure 2 This is a side view of an ECMO and CRRT connecting tube according to an embodiment of the present invention.

[0018] Figure 3 for Figure 2 Cross-sectional view of AA.

[0019] Figure 4 This is a schematic diagram of the internal structure of a rotary switch for connecting an ECMO and CRRT tube according to an embodiment of the present invention.

[0020] Reference numerals: 1-Long tube one; 2-Rotary switch; 3-Short tube; 4-Long tube two; 5-Connector one; 6-Connector two; 201-Switch handle; 202-Fixing groove one; 203-Rotating rod; 204-Fixing groove two; 205-Rotating core; 206-Opening one; 207-Slide rod; 208-Spring; 209-Guard plate; 210-Cover plate; 211-Opening two; 212-Opening three; 213-Switch housing; 214-Gasket. Detailed Implementation

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figures 1-4The ECMO and CRRT connecting tube shown includes a long tube 1, a short tube 3, and a long tube 4. The short tube 3 is 10cm long. A rotary switch 2 is fixedly installed between the long tube 1 and the short tube 3, and a rotary switch 2 is installed between the short tube 3 and the long tube 4. Connector 1 5 and connector 2 6 are respectively installed on the two rotary switches 2, which are connected to the CRRT blood return end and the CRRT blood intake end, respectively. In conventional connecting tubes, a T-junction is used to connect the long tube 1, the short tube 3, and connector 2 6, which are connected during use via a screw installation. The two rotary switches 2 serve the same function on the long tube 1. The long tube 1 and the long tube 4 connect to the ECMO post-membrane and pre-pump pre-filling T-junctions. In this embodiment, the long tube 1 is connected to the ECMO post-membrane pressure measuring tube, and the long tube 4 is connected to the ECMO pre-pump pre-filling T-junction, allowing blood flow to shift from the positive pressure post-membrane to the negative pressure pre-pump, forming a bridge between the post-membrane and pre-pump pressures, thus reducing pressure. Then, connector 5 connects to the blood return end of the CRRT machine, and connector 6 connects to the blood intake end of the CRRT machine. Through the above technical solution, long tube 1, rotary switch 2, short tube 3, long tube 2, connector 5, and connector 6 are all integrated into one unit. This greatly reduces the installation difficulty, improves the efficiency of use, and will not cause the pipeline to loosen. It will not disconnect under high pressure, ensuring the safety of the connection.

[0023] In this embodiment, both ends of the first long tube 1 and the second long tube 4 are male spiral connectors, which are international standard connectors and can be adapted to other common pipelines. The length of the first long tube 1 is 30cm, and the length of the second long tube 4 is 30cm. The ends of the first connector 5 and the second connector 6 are spiral connectors. The ends of the first long tube 1, the rotary switch 2, the first connector 5, and the second connector 6 can be connected to other pipelines through spirals, thereby allowing this connecting tube to be connected to the treatment system.

[0024] In this embodiment, the rotary switch 2 includes a switch housing 213, which connects to a long pipe 1, a short pipe 3, and a connector 6. Another rotary switch 2 connects to a short pipe 3, a long pipe 4, and a connector 5. The switch housing 213 contains a rotating core 205, which has openings 206, 211, and 212. The switch housing 213 is connected to three pipes. When the rotating core 205 rotates, openings 206, 211, and 212 can connect to the three openings. Through this technical solution, the rotation of the rotating core 205 allows it to connect to different openings via openings 206, 211, and 212, enabling all three openings to be connected, or any two openings to be connected, facilitating different operations and improving efficiency.

[0025] In this embodiment, the opening 1 206, opening 211, and opening 3 212 are located at the lower end of the rotating core 205. The rotating core 205 can block the connection ports of the long pipe 1, the short pipe 3, and the connector 2 6 by moving downwards through the upper end. That is to say, rotating the rotating core 205 can realize the connection of different openings, and sliding the rotating core 205 can block all openings, realizing different opening and closing requirements. The upper end of the rotating core 205 is fixedly equipped with a rotating rod 203, and the rotating rod 203 is provided with a fixing groove 1 202 and a fixing groove 204. The switch housing 213 is fixedly equipped with a cover plate 210, and the cover plate 210 is provided with an elastic ring. The elastic ring cooperates with the fixing groove 1 202 and the fixing groove 204 to keep the rotating core 205 at different heights. When the elastic ring is engaged with the second fixed groove 204, the first opening 206, the second opening 211, and the third opening 212 are at the same height as the three openings. By rotating the rotating core 205, different pipelines can be connected. When the elastic ring is engaged with the first fixed groove 202, the upper end of the rotating core 205 completely blocks all openings. Through the above technical solution, the first fixed groove 202 and the second fixed groove 204 can lock the upper and lower positions and maintain rotation when engaged with the elastic ring. When engaged with the first fixed groove 202, all openings are completely blocked.

[0026] In this embodiment, a switch handle 201 is fixedly mounted on the upper end of the rotating rod 203. The switch handle 201 is T-shaped, and the three ends of the switch handle 201 are in the same direction as the openings of opening 1 206, opening 211, and opening 3 212. Observing the switch handle 201 during rotation allows for easy identification of the connection, simplifying observation and judgment and reducing operational difficulty. A slide rod 207 is fixedly mounted on the lower end of the rotating core 205, and a protective plate 209 is fixedly mounted on the lower end of the slide rod 207. A spring 208 is fixedly mounted on the protective plate 209, and a washer 214 is fixedly mounted on the spring 208. The washer 214 is rotatably connected to the bottom end of the switch housing 213. Through the above technical solution, when all openings are blocked at the upper part of the rotating core 205, the spring 208 is in a compressed state. During reset, the spring 208 assists in reset, and when the elastic ring engages with the fixing groove 204, the spring 208 provides additional height maintenance for the rotating core 205.

[0027] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A connecting tube for ECMO and CRRT, characterized in that, It includes a long tube (1), a short tube (3) and a long tube (4). A rotary switch (2) is fixed between the long tube (1) and the short tube (3). A rotary switch (2) is installed between the short tube (3) and the long tube (4). Connector 1 (5) and connector 2 (6) are respectively installed on the two rotary switches (2). Connector 1 (5) and connector 2 (6) are respectively connected to the blood return end and the blood draw end of the CRRT machine. The long tube (1) and the long tube (4) are connected to the ECMO membrane and the pre-inflation three-way valve.

2. The ECMO and CRRT connecting tube according to claim 1, characterized in that, The ends of the second long tube (4) and the first long tube (1) are male spiral connectors.

3. The ECMO and CRRT connecting tube according to claim 2, characterized in that, The ends of connector one (5) and connector two (6) are female spiral connectors.

4. The ECMO and CRRT connecting tube according to claim 1, characterized in that, The rotary switch (2) includes a switch housing (213), which is connected to a long tube (1), a short tube (3) and a connector (6). The switch housing (213) contains a rotating core (205), which has an opening (206), an opening (211) and an opening (212) inside.

5. The ECMO and CRRT connecting tube according to claim 4, characterized in that, The opening one (206), opening two (211), and opening three (212) are located at the lower end of the rotating core (205). The rotating core (205) moves downward and passes through the upper end to block the connection port of the long pipe one (1), the short pipe (3), and the connector two (6).

6. The ECMO and CRRT connecting tube according to claim 5, characterized in that, The upper end of the rotating core (205) is fixedly equipped with a rotating rod (203), and the rotating rod (203) is provided with a first fixing groove (202) and a second fixing groove (204). The switch housing (213) is fixedly equipped with a cover plate (210), and the cover plate (210) is provided with an elastic ring. The elastic ring cooperates with the first fixing groove (202) and the second fixing groove (204) to keep the rotating core (205) at different heights.

7. The ECMO and CRRT connecting tube according to claim 6, characterized in that, The upper end of the rotating rod (203) is fixedly equipped with a switch handle (201).

8. The ECMO and CRRT connecting tube according to claim 7, characterized in that, The lower end of the rotating core (205) is fixedly equipped with a slide rod (207), the lower end of the slide rod (207) is fixedly equipped with a guard plate (209), a spring (208) is fixedly equipped on the guard plate (209), a washer (214) is fixedly equipped on the spring (208), and the washer (214) is rotatably connected to the bottom end of the switch housing (213).

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