Cardioplegic solution connecting pipe fitting

Abstract

The utility model relates to the technical field of cardioplegic solution connecting pipes, and particularly discloses a cardioplegic solution connecting pipe fitting which comprises a main pipe with two open ends, and the main pipe is connected with a first branch pipe and a second branch pipe in the radial direction. The first branch pipe is connected with a first liquid inlet pipe in the radial direction. A three-way valve is arranged at the joint of the first liquid inlet pipe on the first branch pipe; a two-way valve is arranged on the main pipe; the two-way valve is arranged between the first branch pipe and the second branch pipe. Compared with the prior art, the requirement for connection of perfusion pipelines of different components of different cardioplegic solutions can be met, the workload of pipeline building of medical workers is reduced, the convenience degree in the operation process is improved, and the cardioplegic solution pipeline connection efficiency is improved; the cardiac arrest liquid switching device is simple in structure, low in cost and suitable for popularization, and three cardiac arrest liquids including Del Nido liquid, Thomas liquid and HTK liquid can be rapidly switched.

Description

Technical Field

[0001] The utility model relates to the technical field of cardioplegic solution connecting tubes, and particularly discloses a cardioplegic solution connecting tube fitting. Background Art

[0002] An extracorporeal circulation machine is required during heart surgery. The venous blood in the human body enters the extracorporeal circulation machine through a tube, and after being treated with oxygenation and other methods, it flows back into the body through the tube, thereby replacing part or all of the functions of the heart and lungs. If cardiac arrest is required during surgery, cardioplegic fluid needs to be perfused into the coronary artery. There are currently three different cardioplegic fluids: Del Nido solution, Thomas solution, and HTK solution. Each cardioplegic fluid has a different ratio of blood to crystalloid fluid, and needs to be perfused through different tubes. Different cardiac arrest times require perfusion of different cardioplegic fluids, so the perfusion tubes are also different.

[0003] The perfusion pipelines in the existing technology mainly rely on temporary construction by medical staff. The connection process is cumbersome and the operation is not convenient enough, which increases the difficulty of the medical staff's work. During the operation, it not only consumes time and energy but also easily leads to the risk of pipeline connection errors in a tense environment.

[0004] In order to solve the above problems, the patent with announcement number CN217339564U discloses an extracorporeal circulation perfusion system that is conducive to the rapid conversion of cardiac arrest fluid, including a blood circulation pipeline, a crystalloid fluid circulation pipeline and a converter; the converter includes a shell I, a first flow channel and a second flow channel are provided in the shell I, and a first inlet, a second inlet, a first outflow outlet and a second outflow outlet are provided on the shell I; the first outflow outlet and the second outflow outlet are both used to be connected to a roller pump; when the first flow channel is switched to the enabled state, the first inflow inlet and the first outflow outlet and the second inflow inlet and the second outflow outlet are connected through the first flow channel; when the second flow channel is switched to the enabled state, the first inflow inlet and the second outflow outlet and the second inflow inlet and the first outflow outlet are connected through the second flow channel.

[0005] The above solution is suitable for rapid switching between Del Nido solution and Thomas solution, but not for rapid switching between three cardioplegic solutions: Del Nido solution, Thomas solution, and HTK solution. Moreover, the solution has a complex structure and high cost, making it unsuitable for promotion. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a cardioplegic solution connecting pipe fitting to solve the problem of rapid switching of three cardioplegic solutions: DelNido solution, Thomas solution and HTK solution. However, the prior art has complex structure, high cost and is not suitable for promotion.

[0007] In order to achieve the above purpose, the technical solution of the utility model is:

[0008] A cardioplegic fluid connecting pipe fitting comprises a main pipe with openings at both ends, a first branch pipe and a second branch pipe being radially connected to the main pipe; a first liquid inlet pipe being radially connected to the first branch pipe; a three-way valve being provided on the first branch pipe at the connection with the first liquid inlet pipe; a two-way valve being provided on the main pipe; and the two-way valve being arranged between the first branch pipe and the second branch pipe.

[0009] Preferably, a second liquid inlet pipe is radially connected to the main pipe; the second liquid inlet pipe is arranged between the first branch pipe and the second branch pipe; and the two-way valve is arranged between the second liquid inlet pipe and the first branch pipe.

[0010] Preferably, a third liquid inlet pipe is radially connected to the main pipe; the third liquid inlet pipe is arranged between the second liquid inlet pipe and the second branch pipe.

[0011] Preferably, the second liquid inlet pipe, the third liquid inlet pipe and the second branch pipe are all provided with control valves.

[0012] Preferably, the center lines of the first branch pipe, the second branch pipe, the second liquid inlet pipe and the third liquid inlet pipe are arranged in the same plane.

[0013] Preferably, the center line of the first liquid inlet pipe is in the same plane as the center lines of the main pipe and the first branch pipe.

[0014] The beneficial effects of the utility model are:

[0015] When in use, an external hose is used to connect the first branch pipe and the second branch pipe to form a bypass pipe. The cardioplegic fluid connecting pipe fitting forms a multi-pipe structure by allowing the main pipe and the bypass pipe to form a multi-pipe structure, and utilizes the first liquid inlet pipe, the second liquid inlet pipe and the third liquid inlet pipe for dispersed connection. Through different perfusion connection methods, the perfusion pipe connection needs of different components of different cardioplegic fluids can be realized, thereby reducing the workload of medical personnel in setting up pipes, improving the convenience during the operation, and improving the efficiency of cardioplegic fluid pipe connection; it can realize rapid switching of three cardioplegic fluids, namely Del Nido solution, Thomas solution and HTK solution, has a simple structure, low cost, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the use state of the utility model when perfusing Del Nido solution;

[0019] Figure 3 This is a schematic diagram of the use state of the utility model when perfusing Thomas fluid;

[0020] Figure 4 It is a schematic diagram of the use state of the utility model when perfusing HTK liquid.

[0021] Description of reference numerals:

[0022] 100, main pipe; 200, first branch pipe; 300, second branch pipe; 410, first liquid inlet pipe; 420, second liquid inlet pipe; 430, third liquid inlet pipe; 510, three-way valve; 520, two-way valve. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0024] like Figure 1 As shown, a cardioplegic solution connection pipe fitting includes a main pipe 100 with two open ends. A first branch pipe 200 and a second branch pipe 300 are radially connected to the main pipe 100. A first liquid inlet pipe 410 is radially connected to the first branch pipe 200. A three-way valve 510 is provided on the first branch pipe 200 at the connection with the first liquid inlet pipe 410. A two-way valve 520 is provided on the main pipe 100. The two-way valve 520 is disposed between the first branch pipe 200 and the second branch pipe 300. During use, an external hose is used to connect the first branch pipe 200 and the second branch pipe 300 to form a bypass pipe.

[0025] In the above configuration, a second liquid inlet pipe 420 is radially connected to the main pipe 100; the second liquid inlet pipe 420 is disposed between the first branch pipe 200 and the second branch pipe 300; and a two-way valve 520 is disposed between the second liquid inlet pipe 420 and the first branch pipe 200. A third liquid inlet pipe 430 is radially connected to the main pipe 100; the third liquid inlet pipe 430 is disposed between the second liquid inlet pipe 420 and the second branch pipe 300. Control valves are provided on each of the second liquid inlet pipe 420, the third liquid inlet pipe 430, and the second branch pipe 300. When the second and third liquid inlet pipes 420 and 430 are not receiving liquid, the control valves on these pipes are closed. When the second and third liquid inlet pipes 420 and 430 need to receive liquid, the control valves are opened.

[0026] The center lines of the first branch pipe 200, the second branch pipe 300, the second liquid inlet pipe 420 and the third liquid inlet pipe 430 are arranged in the same plane. The center line of the first liquid inlet pipe 410 is in the same plane as the center lines of the main pipe 100 and the first branch pipe 200.

[0027] The liquid inlet and outlet ends of the main pipe 100 are end A and end B respectively, the liquid outlet end of the first branch pipe 200 is end D, the liquid inlet end of the second branch pipe 300 is end G, and the liquid inlet ends of the first liquid inlet pipe 410, the second liquid inlet pipe 420 and the third liquid inlet pipe 430 are end C, end E and end F respectively.

[0028] like Figure 2 As shown, when using the cardioplegic connection tubing to perfuse Del Nido solution, the Del Nido solution is a two-component solvent. Two different liquids need to be delivered during addition. The second and third liquid inlet tubes 420 and 430 serve as input ports for the two different components of the Del Nido solution. The three-way valve 510 closes the port of the first branch tube 200 connecting to the first liquid inlet tube 410, transforming the first branch tube 200 into a single channel. With the two-way valve 520 closed, blood delivered by the extracorporeal circulation machine passes through the bypass tubing, i.e., entering from end A of the main tube 100, then exiting from end D of the first branch tube 200, and re-entering the main tube 100 from end G of the second branch tube 300 through the external hose. The two components of the Del Nido solution (infused from ends E and F, respectively) mix in the main tube 100 before mixing with the blood delivered from the second branch tube 300, completing the perfusion of the blood with the Del Nido solution.

[0029] Among them, end A and end B are connected to the extracorporeal circulation machine, which infuses blood into the cardioplegic fluid connection pipe by the extracorporeal circulation machine. With the cooperation of the external hose, the Del Nido solution is mixed and infused into the blood, and finally returned to the patient's body by the extracorporeal circulation machine; and the two-component solution in the Del Nido solution is respectively added through the second liquid inlet pipe 420 and the third liquid inlet pipe 430. During the filling process, the proportion is adjusted and adapted according to the needs of the operation.

[0030] like Figure 3 As shown, when the cardioplegic solution connecting pipe is used to perfuse the Thomas solution, the Thomas solution is a single-component solution and can be added directly. At this time, the three-way valve 510 closes the port connecting the first branch pipe 200 and the main pipe 100, allowing the port of the first liquid inlet pipe 410 to be connected to the D end. The C end of the first liquid inlet pipe 410 will serve as the filling port for the Thomas solution.

[0031] The two-way valve 520 is in the open state, and the A and B ends of the main pipe 100 are connected to the extracorporeal circulation machine. Blood will flow directly through the inside of the main pipe 100, while the second liquid inlet pipe 420 and the third liquid inlet pipe 430 will not participate in the liquid inlet. The Thomas fluid input from the first liquid inlet pipe 410 will flow through the bypass pipe and mix with the blood in the main pipe 100, and then flow out from the B end synchronously to return to the extracorporeal circulation machine.

[0032] like Figure 4 As shown, when the HTK solution is perfused using the cardioplegia solution connecting pipe, the HTK solution is formed by mixing three different component solutions. The first liquid inlet pipe 410, the second liquid inlet pipe 420 and the third liquid inlet pipe 430 are respectively connected to different component solutions. The three-way valve 510 closes the port connecting the first branch pipe 200 and the main pipe 100. The two-way valve 520 is in a closed state. The liquid injected into the first liquid inlet pipe 410 will reach the main pipe 100 through the bypass pipe. The liquid injected into the main pipe 100 from the second liquid inlet pipe 420, i.e., end E, and the third liquid inlet pipe 430, i.e., end F, will mix with the liquid injected into the first liquid inlet pipe 410 before reaching end B. End B is connected to the liquid inlet port of the extracorporeal circulation machine through an external hose, and the extracorporeal circulation machine directly sends the mixed liquid into the human blood vessels for circulation.

[0033] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall be within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A cardioplegic fluid connection pipe, comprising a main pipe (100) with openings at both ends, characterized in that: The main pipe (100) is radially connected to a first branch pipe (200) and a second branch pipe (300); the first branch pipe (200) is radially connected to a first liquid inlet pipe (410); a three-way valve (510) is provided at the connection between the first branch pipe (200) and the first liquid inlet pipe (410); the main pipe (100) is provided with a two-way valve (520); the two-way valve (520) is provided between the first branch pipe (200) and the second branch pipe (300).

2. The cardioplegia solution connecting pipe according to claim 1, characterized in that: A second liquid inlet pipe (420) is radially connected to the main pipe (100); the second liquid inlet pipe (420) is arranged between the first branch pipe (200) and the second branch pipe (300); and a two-way valve (520) is arranged between the second liquid inlet pipe (420) and the first branch pipe (200).

3. The cardioplegia solution connecting pipe according to claim 2, characterized in that: A third liquid inlet pipe (430) is radially connected to the main pipe (100); the third liquid inlet pipe (430) is arranged between the second liquid inlet pipe (420) and the second branch pipe (300).

4. The cardioplegia solution connecting pipe according to claim 3, characterized in that: The second liquid inlet pipe (420), the third liquid inlet pipe (430) and the second branch pipe (300) are all provided with control valves.

5. The cardioplegia solution connecting pipe according to claim 4, characterized in that: The center lines of the first branch pipe (200), the second branch pipe (300), the second liquid inlet pipe (420), and the third liquid inlet pipe (430) are arranged in the same plane.

6. The cardioplegia solution connecting pipe according to claim 5, characterized in that: The centerline of the first liquid inlet pipe (410) is in the same plane as the centerlines of the main pipe (100) and the first branch pipe (200).

Images