Ventricular assist system, and flushing method, consumable and device for medical catheter pump system

Abstract

The present application belongs to the technical field of medical apparatuses. Disclosed are a ventricular assist system, and a flushing method, consumable and device for a medical catheter pump system. The ventricular assist system comprises a flushing pump assembly, a first three-way valve, a second three-way valve, and a medical catheter pump, wherein the first three-way valve comprises a first valve port, a second valve port and a third valve port, the first valve port being connected to a first flushing passage actuated by the flushing pump assembly, and the second valve port being connected to a first flushing interface of the medical catheter pump; and the second three-way valve comprises a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port being connected to a second flushing passage actuated by the flushing pump assembly, and the fifth valve port being connected to a second flushing interface of the medical catheter pump. Therefore, flushing or pre-filling is performed on different positions in the ventricular assist system by means of switching open states of the first three-way valve and the second three-way valve, such that gas at the different positions can be discharged more thoroughly, thereby avoiding residual bubbles, and thus improving the exhaust effect of pre-filling or flushing performed on the whole system.

Description

Flushing methods, consumables and devices for ventricular assist systems and medical catheter pump systems

[0001] This application claims priority to a patent application filed with the State Intellectual Property Office of China on August 16, 2023, with application number 2023110343026 and application name “Flushing methods, consumables and devices for ventricular assist systems and medical catheter pump systems”. Technical Field

[0002] The embodiments of the present application relate to the field of medical equipment technology, and in particular to a flushing method, consumables, and device for a ventricular assist system and a medical catheter pump system. Background Art

[0003] A medical catheter pump is a device used to assist the heart in providing blood circulation. During operation, the catheter of the medical catheter pump is delivered to the left ventricle via the femoral artery. The inlet is located in the left ventricular outflow tract, and the outlet is located in the aorta. The axial flow pump draws blood from the left ventricular inlet and returns it to the aorta through the aortic outlet, providing cardiac assistance.

[0004] Before using a medical catheter pump, the air in the medical catheter pump must be evacuated. In related technologies, a flushing pump is controlled to continuously fill the medical catheter pump with flushing fluid through a flushing catheter. The flushing fluid squeezes out the air, thereby removing bubbles from the medical catheter pump.

[0005] However, since the flushing catheter has a long pipeline, it is difficult to completely remove the air in the entire catheter pump system by flushing the flushing catheter and the medical catheter pump as a whole, and bubbles are likely to remain.

[0006] Summary of the Invention

[0007] This application provides a flushing method, consumables, and device for a ventricular assist system and a medical catheter pump system. By switching the conduction states of a first three-way valve and a second three-way valve, different flushing locations within the ventricular assist system can be flushed or primed. The technical solution is as follows:

[0008] According to one aspect of the present application, a ventricular assist system is provided, which includes: a flushing pump assembly, a first three-way valve, a second three-way valve and a medical catheter pump; the first three-way valve includes a first valve port, a second valve port and a third valve port, the first valve port is connected to a first flushing passage driven by the flushing pump assembly, and the second valve port is connected to a first flushing interface of the medical catheter pump; the second three-way valve includes a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is connected to a second flushing passage driven by the flushing pump assembly, and the fifth valve port is connected to the second flushing interface of the medical catheter pump.

[0009] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or priming different flushing positions, and the flushing positions include the first flushing passage and the second flushing passage, or the flushing positions include the inner cavity of a medical catheter pump.

[0010] In one embodiment, in the first pre-filling stage, the second valve port and the third valve port of the first three-way valve are connected, the fifth valve port and the sixth valve port of the second three-way valve are connected, and the sixth valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing assembly; wherein, the first pre-filling stage includes a stage of filling the inner cavity of the medical catheter pump with flushing fluid through the flushing assembly.

[0011] In one embodiment, the flushing assembly includes at least one of a syringe pump, a syringe, a needle, and a pressurized fluid bag.

[0012] In one embodiment, in the second pre-filling stage, the first valve port and the third valve port of the first three-way valve are connected, and the fourth valve port and the sixth valve port of the second three-way valve are connected; wherein, the second pre-filling stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly.

[0013] In one embodiment, during the pre-filling stage, any two valve ports of the first three-way valve are connected, the fifth valve port and the sixth valve port of the second three-way valve are connected, and the sixth valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing assembly; wherein, the pre-filling stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly, and a stage of filling the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly.

[0014] In one embodiment, during the pre-filling stage, the second valve port and the third valve port of the first three-way valve are connected, the fifth valve port and the sixth valve port of the second three-way valve are connected, and the sixth valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing assembly; wherein, the pre-filling stage includes a stage of filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly, and a stage of filling the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly.

[0015] In one embodiment, during the overall flushing stage, the first valve port and the second valve port of the first three-way valve are connected, and the fourth valve port and the fifth valve port of the second three-way valve are connected; wherein, the overall flushing stage includes a stage of flushing the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly.

[0016] In one embodiment, the flushing assembly includes a fast flushing assembly; the instantaneous flow rate of the flushing liquid provided by the fast flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly.

[0017] In one embodiment, the rapid flushing assembly includes a pressurizing device; the instantaneous flow rate of the flushing liquid provided by the pressurizing device is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly.

[0018] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump. The flushing pump is used to deliver flushing liquid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage. The circulation pump is used to control the circulation of the flushing liquid to flush the inner cavity of the medical catheter pump during the overall flushing stage.

[0019] In one embodiment, the flushing pump is provided in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is provided in a passage of the second flushing passage that is not shared with the first flushing passage.

[0020] In one embodiment, the system further comprises a control device; the control device is configured to control a pumping flow rate corresponding to the flushing pump assembly.

[0021] According to another aspect of the present application, a flushing method for a medical catheter pump system is provided. The medical catheter pump system includes a medical catheter pump and a flushing pipeline. A first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly via an intravalve passage between a second valve port and a first valve port of a first three-way valve. A second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly via an intravalve passage between a fifth valve port and a fourth valve port of a second three-way valve. The flushing pipeline forms a first flushing path and a second flushing path.

[0022] The method includes: in a pre-filling stage, filling a first flushing passage and a second flushing passage with flushing liquid through a flushing pump assembly, and filling an inner cavity of a medical catheter pump with flushing liquid through a flushing assembly connected to a sixth valve port of a second three-way valve; in an overall flushing stage, flushing a circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly.

[0023] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or priming different flushing positions, and the flushing positions include the first flushing passage and the second flushing passage, or the flushing positions include the inner cavity of a medical catheter pump.

[0024] In one embodiment, during the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, including: during the first priming stage, the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve; during the second priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly.

[0025] In one embodiment, the method further includes: in the first pre-charging stage, controlling the second valve port and the third valve port of the first three-way valve to be conductive; and controlling the fifth valve port and the sixth valve port of the second three-way valve to be conductive.

[0026] In one embodiment, the method further includes: in the second pre-charging stage, controlling the first valve port and the third valve port of the first three-way valve to be connected; and controlling the fourth valve port and the sixth valve port of the second three-way valve to be connected.

[0027] In one embodiment, during the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve, including: during the priming stage, the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve; at the same time, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly.

[0028] In one embodiment, the method further includes: in the pre-charging stage, controlling any two valve ports of the first three-way valve to be conductive, and controlling the fifth valve port and the sixth valve port of the second three-way valve to be conductive.

[0029] In one embodiment, the method further includes: during the pre-charging stage, controlling the second valve port and the third valve port of the first three-way valve to be conductive, and controlling the fifth valve port and the sixth valve port of the second three-way valve to be conductive.

[0030] In one embodiment, the method further includes: in the pre-charging stage, controlling any two valve ports of the second three-way valve to be open, and controlling the second valve port and the third valve port of the first three-way valve to be open.

[0031] In one embodiment, the flushing assembly includes a quick flushing assembly; filling the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, including: filling the inner cavity of the medical catheter pump with flushing liquid through the quick flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, the instantaneous flow rate of the flushing liquid provided by the quick flushing assembly is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump assembly.

[0032] In one embodiment, a flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage; the first flushing passage and the second flushing passage are filled with flushing liquid by the flushing pump assembly, including: controlling the rotation speed of the flushing pump and the circulation pump so that the difference between the flushing liquid flow rate of the first sub-passage and the flushing liquid flow rate of the second sub-passage is within a preset range, the first sub-passage includes a passage on the first flushing passage that is not shared with the second flushing passage, and the second sub-passage includes a passage on the second flushing passage that is not shared with the first flushing passage; the first flushing passage and the second flushing passage are filled with flushing liquid by the flushing pump and the circulation pump.

[0033] In one embodiment, the method further includes: in a transition phase before entering the overall flushing phase, controlling the pumping flow of the flushing pump assembly to a second flow, the second flow being smaller than the first flow, and the first flow being the pumping flow of the flushing pump assembly in the pre-filling phase.

[0034] In one embodiment, during the transition phase, any two valve ports of the first three-way valve are both open, and the fifth valve port and the sixth valve port of the second three-way valve are both open.

[0035] In one embodiment, during the transition phase, the second valve port and the third valve port of the first three-way valve are connected, and the fifth valve port and the sixth valve port of the second three-way valve are connected.

[0036] In one embodiment, during the transition phase, any two valve ports of the second three-way valve are both open, and the second valve port and the third valve port of the first three-way valve are both open.

[0037] In one embodiment, the method further includes: during the transition phase, displaying a prompt message indicating that the phase is switched to the overall flushing phase; and receiving a confirmation operation in response to the prompt message, entering the overall flushing phase.

[0038] In one embodiment, the method further includes: during the overall flushing stage, controlling the first valve port and the second valve port of the first three-way valve to be conductive, and controlling the fourth valve port and the fifth valve port of the second three-way valve to be conductive.

[0039] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage; in the overall flushing stage, the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump is flushed by the flushing pump assembly, including: in the overall flushing stage, based on the flushing liquid flow rate of the catheter of the medical catheter pump, the rotation speed of the flushing pump is controlled; and based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump, the rotation speed of the circulation pump is controlled; and the circulating flushing circuit and the catheter of the medical catheter pump are flushed by the flushing pump and the circulation pump.

[0040] According to another aspect of the present application, a flushing method for a medical catheter pump system is provided, the medical catheter pump system comprising a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing pathway driven by a flushing pump assembly via an intra-valve passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing pathway driven by the flushing pump assembly via an intra-valve passage between a fifth valve port and a fourth valve port of a second three-way valve, the flushing pipeline forming a first flushing pathway and a second flushing pathway; the method is executed by a control device corresponding to the flushing pump assembly, the control device being connected to the flushing pump assembly, the method comprising: in a pre-filling stage, controlling the flushing pump assembly to fill the first flushing pathway and the second flushing pathway with flushing liquid; and in an overall flushing stage, controlling the flushing pump assembly to flush a circulating flushing loop formed by the first flushing pathway, the second flushing pathway, and the inner cavity of the medical catheter pump.

[0041] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or priming different flushing positions, and the flushing positions include the first flushing passage and the second flushing passage, or the flushing positions include the inner cavity of a medical catheter pump.

[0042] In one embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage; in the pre-filling stage, the flushing pump assembly is controlled to fill the first flushing passage and the second flushing passage with flushing liquid, including: in the pre-filling stage, the rotation speed of the flushing pump and the circulation pump is controlled so that the difference between the flushing liquid flow rate of the first sub-passage and the flushing liquid flow rate of the second sub-passage is within a preset range, the first sub-passage includes the passage on the first flushing passage that is not shared with the second flushing passage, and the second sub-passage includes the passage on the second flushing passage that is not shared with the first flushing passage; the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump and the circulation pump.

[0043] In one embodiment, the method further includes: in a transition phase before entering the overall flushing phase, controlling the pumping flow of the flushing pump to a second flow, the second flow being smaller than the first flow, and the first flow being the pumping flow of the flushing pump in the pre-filling phase.

[0044] In one embodiment, a flushing pump assembly includes a flushing pump and a circulation pump, wherein the flushing pump is arranged in a common part of a first flushing passage and a second flushing passage at a starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage; during the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump, including: during the overall flushing stage, controlling the rotation speed of the flushing pump based on the flushing liquid flow rate of the catheter of the medical catheter pump; and controlling the rotation speed of the circulation pump based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; flushing the circulating flushing circuit and the catheter of the medical catheter pump through the flushing pump and the circulation pump.

[0045] According to another aspect of the present application, a consumable for a medical catheter pump system is provided, the consumable including a first three-way valve and a second three-way valve; the first valve port of the first three-way valve is used to connect to a first flushing passage driven by a flushing pump assembly, and the second valve port of the first three-way valve is used to connect to a first flushing interface of the medical catheter pump; the fourth valve port of the second three-way valve is used to connect to a second flushing passage driven by the flushing pump assembly, and the fifth valve port of the second three-way valve is used to connect to the second flushing interface of the medical catheter pump.

[0046] In one embodiment, the consumables also include a flushing pipeline, which forms a first flushing passage and a second flushing passage. The first three-way valve is arranged at the end of the pipe opening corresponding to the first flushing passage, and the second three-way valve is arranged at the end of the pipe opening corresponding to the second flushing passage.

[0047] In one embodiment, the consumables also include a medical catheter pump, which includes: a catheter; a drive shaft rotatably inserted into the catheter; a pump head, including: a pump housing connected to the distal end of the catheter, and an impeller housed in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate to pump blood; a drive catheter handle, including: a rotor driven by a drive motor; the proximal end of the drive shaft is connected to the rotor, and an inner cavity is formed in the drive catheter handle for rotatably supporting the rotor; the catheter is connected to the inner cavity, and the drive catheter handle is provided with a first flushing interface and a second flushing interface connected to the inner cavity, a first three-way valve is provided at the first flushing interface, and a second three-way valve is provided at the second flushing interface; wherein, a portion of the flushing fluid entering the inner cavity through the second flushing interface enters the catheter and is completely discharged into the human body at the pump head, and the other portion passes through the rotor and is discharged from the first flushing interface.

[0048] According to another aspect of the present application, a control device for a medical catheter pump system is provided. The medical catheter pump system includes a medical catheter pump and a flushing pipeline. A first flushing interface of the medical catheter pump is connected to a first flushing pathway driven by a flushing pump assembly via an intravalve passage between a second valve port and the first valve port of a first three-way valve. A second flushing interface of the medical catheter pump is connected to a second flushing pathway driven by the flushing pump assembly via an intravalve passage between a fifth valve port and a fourth valve port of a second three-way valve. The flushing pipeline forms a first flushing pathway and a second flushing pathway. The device includes: a control module configured to, during a priming phase, fill the first flushing pathway and the second flushing pathway with flushing fluid via the flushing pump assembly, and to fill the inner cavity of the medical catheter pump with flushing fluid via the flushing assembly connected to the sixth valve port of the second three-way valve.

[0049] The control module is also used to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly during the overall flushing stage.

[0050] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or priming different flushing positions, and the flushing positions include the first flushing passage and the second flushing passage, or the flushing positions include the inner cavity of a medical catheter pump.

[0051] According to another aspect of the present application, a control device for a medical catheter pump system is provided. The medical catheter pump system includes a medical catheter pump and a flushing pipeline. A first flushing interface of the medical catheter pump is connected to a first flushing pathway driven by a flushing pump assembly through an intra-valve passage between a second valve port and a first valve port of a first three-way valve. A second flushing interface of the medical catheter pump is connected to a second flushing pathway driven by the flushing pump assembly through an intra-valve passage between a fifth valve port and a fourth valve port of a second three-way valve. The flushing pipeline forms a first flushing pathway and a second flushing pathway. The device includes: a control module for controlling the flushing pump assembly to fill the first flushing pathway and the second flushing pathway with flushing fluid during a pre-filling phase; and the control module is further used to control the flushing pump assembly to flush a circulating flushing circuit formed by the first flushing pathway, the second flushing pathway, and the inner cavity of the medical catheter pump during an overall flushing phase.

[0052] In one embodiment, the first three-way valve and the second three-way valve have different conduction states when flushing or priming different flushing positions, and the flushing positions include the first flushing passage and the second flushing passage, or the flushing positions include the inner cavity of a medical catheter pump.

[0053] In one embodiment, the control device further includes: a flushing pump assembly, the flushing pump assembly including a flushing pump and a circulation pump; the flushing pump is used to deliver flushing liquid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage, and the circulation pump is used to control the flushing liquid to circulate and flush the inner cavity of the medical catheter pump during the overall flushing stage.

[0054] In one embodiment, the flushing pump is provided in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is provided in a passage of the second flushing passage that is not shared with the first flushing passage.

[0055] According to another aspect of the present application, a computer storage medium is provided, in which at least one computer program is stored. The at least one computer program is loaded and executed by a processor to implement the flushing method of the medical catheter pump system as described above.

[0056] According to another aspect of the present application, a computer program product is provided, which includes a computer program stored in a computer storage medium; the computer program is read and executed from the computer storage medium by a processor of a computer device, so that the computer device executes the flushing method of the medical catheter pump system described above.

[0057] According to another aspect of the present application, a chip is provided, which includes a programmable logic circuit or a program, and a device equipped with the chip is used to implement the flushing method of the medical catheter pump system described above.

[0058] The beneficial effects brought about by the technical solution provided by the present application include at least: the first three-way valve and the second three-way valve have different conduction states when flushing or priming at different flushing locations, and the flushing locations include but are not limited to the first flushing path, the second flushing path, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different flushing locations in the ventricular assist system can be flushed or primed separately, thereby achieving priming or flushing at different flushing locations separately. Compared with priming or flushing the entire flushing location at one time, the method of priming or flushing by dividing the flushing locations can ensure that each flushing location is fully flushed or primed, so that the gas at different flushing locations can be discharged more thoroughly, and bubbles are prevented from remaining in some small gaps, thereby improving the overall exhaust effect of priming or flushing the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0060] FIG1 is a schematic diagram of an application scenario of a medical catheter pump provided by an exemplary embodiment of the present application;

[0061] FIG2 is a schematic diagram of a ventricular assist system provided by an exemplary embodiment of the present application;

[0062] FIG3 is a schematic diagram of a ventricular assist system in a first priming stage according to an exemplary embodiment of the present application;

[0063] FIG4 is a schematic diagram of a ventricular assist system in the second priming stage provided by an exemplary embodiment of the present application;

[0064] FIG5 is a schematic diagram of a ventricular assist system during an overall flushing phase according to an exemplary embodiment of the present application;

[0065] FIG6 is a flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application;

[0066] FIG7 is a flow chart of a flushing method for a medical catheter pump system in the case of segmented priming provided by an exemplary embodiment of the present application;

[0067] FIG8 is a flow chart of a flushing method for a medical catheter pump system in the case of simultaneous priming, provided by an exemplary embodiment of the present application;

[0068] FIG9 is a flow chart of a flushing method for a medical catheter pump system with a transition phase provided by an exemplary embodiment of the present application;

[0069] FIG10 is a flow chart of a flushing method for a medical catheter pump system provided by another exemplary embodiment of the present application;

[0070] FIG11 is a flow chart of a flushing method for a medical catheter pump system provided by another exemplary embodiment of the present application;

[0071] FIG12 is a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application;

[0072] FIG13 is a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application;

[0073] FIG14 is a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application;

[0074] FIG15 is a block diagram of a flushing device of a medical catheter pump provided by an exemplary embodiment of the present application;

[0075] FIG16 is a block diagram of a flushing device of a medical catheter pump provided by an exemplary embodiment of the present application.

[0076] 101. Drive motor; 102. Conduit; 103. Pump head;

[0077] 110, flushing line; 120, catheter pump; 121, drive catheter handle; 122, catheter; 123, pump head; 130, control device; 131, console; 132, drive motor; 140, fluid bag; 170, connector;

[0078] 1501, control module; 1502, display module; 1601, control module;

[0079] 210. Flushing pump assembly; 211. Flushing pump; 212. Circulation pump; 220. First three-way valve; 221. First valve port; 222. Second valve port; 223. Third valve port; 230. Second three-way valve; 231. Fourth valve port; 232. Fifth valve port; 233. Sixth valve port; 240. Medical catheter pump; 241. Drive catheter handle; 242. Catheter; 243. Pump head; 250. Flushing liquid container; 260. Flushing assembly. DETAILED DESCRIPTION

[0080] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0081] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0082] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.

[0083] Ventricular assist system, a circulatory assist device system that replaces ventricular work, includes but is not limited to extracorporeal ventricular assist system, transcatheter ventricular assist system, and implantable ventricular assist system.

[0084] The transcatheter ventricular assist system, including the transcatheter ventricular assist system control host (hereinafter referred to as: control device), and the transcatheter ventricular assist system catheter pump system (hereinafter referred to as: medical catheter pump system) used in conjunction with it, is an interventional blood pump suitable for providing temporary left ventricular circulation assistance in related operations.

[0085] Medical catheter pump: A catheter pump used in medical settings to assist the heart in providing blood circulation. Alternatively, the medical catheter pump is a heart pump inserted into a living body. Alternatively, some or all of the components of the medical catheter pump may be inserted into a living body.

[0086] Figure 1 shows a schematic diagram of an application scenario for a medical catheter pump provided by one embodiment of the present application. The medical catheter pump includes a drive catheter handle (not shown), a catheter 102, and a pump head 103. A drive motor 101 is coupled to the proximal end of the catheter 102 via the drive catheter handle, and the pump head 103 is connected to the distal end of the catheter 102.

[0087] The pump head 103 in the medical catheter pump can be percutaneously inserted into the heart through the peripheral blood vessels along with the catheter 102. The pump head 103 will be inserted between the left ventricle and the ascending aorta. The blood inlet of the pump head 103 will be inserted into the left ventricle, and the blood outlet of the pump head 103 will be inserted into the ascending aorta. The drive motor can be connected to the interventional pump to drive the impeller in the pump head to rotate, thereby pumping blood from the left ventricle into the ascending aorta to achieve ventricular assist function.

[0088] FIG2 shows a schematic diagram of a ventricular assist system provided by an exemplary embodiment of the present application. The ventricular assist system includes an irrigation pump assembly 210 , a first three-way valve 220 , a second three-way valve 230 , and a medical catheter pump 240 .

[0089] The first valve port 221 of the first three-way valve 220 is connected to the first flushing path driven by the flushing pump assembly 210. The second valve port 222 of the first three-way valve 220 is connected to the medical catheter pump 240. The second valve port 222 of the first three-way valve 220 is connected to the first flushing interface (not shown) of the medical catheter pump 240. The first three-way valve 220 also has a third valve port 223. The ventricular assist system may also include a flushing fluid container 250. The first flushing path includes a path formed by a pipeline connecting the first three-way valve 220 and the flushing fluid container 250.

[0090] The fourth valve port 231 of the second three-way valve 230 is connected to the second flushing passage driven by the flushing pump assembly 210. The fifth valve port 232 of the second three-way valve 230 is connected to the medical catheter pump 240. The fifth valve port 232 of the second three-way valve 230 is connected to the second flushing interface (not shown) of the medical catheter pump 240. The second three-way valve 230 also has a sixth valve port 233. The second flushing passage includes a passage formed by a pipeline connecting the second three-way valve 230 and the flushing liquid container 250.

[0091] A three-way valve is a valve body with three valve ports. The valve ports can be controlled to open or close, forming a valve passage. For example, the first and second valve ports are connected to form a valve passage, the first and third valve ports are connected to form a valve passage, the second and third valve ports are connected to form a valve passage, and any two of the first, second, and third valve ports are connected to form a valve passage.

[0092] The three-way valve is equipped with a control structure that can control the conduction state between any two valve ports in the three-way valve. This control structure can be a purely mechanical structure or an electrically controlled mechanical mechanism. The conduction state of the three-way valve can be adjusted manually or by a control device.

[0093] The first three-way valve and the second three-way valve have different conduction states when flushing or priming different flushing locations, including but not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different locations within the ventricular assist system can be flushed or primed separately, achieving priming or flushing of different flushing locations. Compared to priming or flushing all flushing locations at once, the method of priming or flushing by stratifying the locations allows each flushing location to be fully flushed or primed, allowing gas at different locations to be discharged more thoroughly, preventing bubbles from being trapped in small gaps, and thus improving the overall exhaust effect of priming or flushing the entire system.

[0094] In an optional embodiment, the ventricular assist system further includes a control device. The control device is configured to control the pumping flow rate corresponding to the flushing pump assembly. Controlling the flushing pump assembly via the control device allows for more stable control of the pumping flow rate for priming or flushing. Furthermore, the control device can also control the conductance states of the first three-way valve and the second three-way valve, thereby enabling flushing or priming of different flushing locations by the flushing pump assembly.

[0095] Before a medical catheter pump is inserted percutaneously into the human body, it must be flushed to expel air from the pump. This flushing process consists of a priming phase and a full flushing phase. The priming phase is used to quickly fill the flushing fluid, while the full flushing phase continuously flushes the entire flushing pathway.

[0096] In one embodiment, the priming stage includes a first priming stage and a second priming stage, wherein the first priming stage and the second priming stage are used to fill different priming locations with irrigating fluid. The first priming stage may be used to priming the inner cavity of the medical catheter pump to expel air from the inner cavity of the medical catheter pump and prevent bubbles from remaining in the small gaps within the inner cavity of the medical catheter pump. The second priming stage may be used to priming the irrigating line of the medical catheter pump system to expel air from the irrigating line.

[0097] For the first priming stage, Figure 3 shows a schematic diagram of a ventricular assist system in the first priming stage provided by an exemplary embodiment of the present application, the ventricular assist system including a flushing pump assembly 210, a first three-way valve 220, a second three-way valve 230 and a medical catheter pump 240.

[0098] During the first priming stage, the second valve port 222 and the third valve port 223 of the first three-way valve 220 are connected, the fifth valve port 232 and the sixth valve port 233 of the second three-way valve 230 are connected, and the sixth valve port 233 of the second three-way valve 230 is connected to the flushing assembly 260. Alternatively, the third valve port 223 of the first three-way valve 220 is connected to the flushing assembly 260. In this application, the first three-way valve refers to the three-way valve on the left side of the figure, and the second three-way valve refers to the three-way valve on the right side of the figure. This application only uses the sixth valve port 233 of the second three-way valve 230 as an example of being connected to the flushing assembly 260. Similarly, the third valve port 223 of the first three-way valve 220 can also be connected to the flushing assembly 260. The flushing assembly is used to provide the flushing fluid required to fill the inner lumen of the medical catheter pump. The first priming stage includes the stage of filling the inner lumen of the medical catheter pump with flushing fluid via the flushing assembly.

[0099] During the first priming stage, under the pumping action of the flushing assembly 260, flushing fluid flows into the second three-way valve 230 through the sixth valve port 233 of the second three-way valve 230, enters the inner cavity of the drive catheter handle 241 through the fifth valve port 232 of the second three-way valve 230, and then enters the inner cavity of the drive catheter handle 241 through the fifth valve port 232 of the second three-way valve 230. The flushing fluid then enters the first three-way valve 220 through the second valve port 222 of the first three-way valve 220, and is then discharged through the third valve port 223 of the first three-way valve 220. Over a certain period of time, the flushing fluid is infused along this path, thereby completing the flushing fluid priming of the inner cavity of the medical catheter pump and expelling the air within the inner cavity.

[0100] By arranging a first three-way valve and a second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve. By flushing the inner cavity of the medical catheter pump through the additional flushing component, the air in the inner cavity can be effectively discharged, and bubbles can be avoided from remaining in the small gaps in the inner cavity.

[0101] Optionally, the flushing assembly includes at least one of a syringe pump, a syringe, a needle and a pressurized fluid bag.

[0102] Optionally, flushing assembly 260 is a rapid flushing assembly, and the instantaneous flow rate of flushing fluid provided by the rapid flushing assembly is greater than the instantaneous flow rate of flushing fluid provided by flushing pump assembly 210. Optionally, the rapid flushing assembly includes a pressurizing device. Optionally, the rapid flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the rapid flushing assembly to the inner lumen of the medical catheter pump is greater than the instantaneous flow rate provided by flushing pump assembly 210 to the inner lumen of the medical catheter pump.

[0103] When flushing the inner cavity, by using a fast flushing component to provide a larger instantaneous flow rate, the flushing fluid can be quickly infused into the inner cavity, thereby more quickly exhausting the air in the inner cavity, and it is less likely that bubbles will remain under the instantaneous large flow rate. Compared with the method of pre-filling the inner cavity by pumping flushing fluid into the inner cavity through the flushing pump component, the exhaust effect of pre-filling the inner cavity by providing an instantaneous large flow rate through the fast flushing component is better.

[0104] In an exemplary embodiment, the medical catheter pump 240 includes:

[0105] catheter 242;

[0106] A drive shaft (not shown) is rotatably disposed in the guide tube 242;

[0107] The pump head 243 includes a pump housing connected to the distal end of the catheter 242 and an impeller housed in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate and pump blood;

[0108] The drive catheter handle 241 includes: a rotor driven by a drive motor; a proximal end of a drive shaft connected to the rotor; an inner cavity formed within the drive catheter handle for rotatably supporting the rotor; a catheter communicating with the inner cavity; and a first flushing port and a second flushing port communicating with the inner cavity. The first three-way valve 220 can be disposed at the first flushing port, and the second three-way valve 230 can be disposed at the second flushing port.

[0109] Among them, a part of the flushing liquid entering the inner cavity through the second flushing interface enters the catheter 242 and is completely discharged into the human body at the pump head 243, and the other part passes through the rotor and is discharged from the first flushing interface.

[0110] Specifically, the driving catheter handle 241 includes a coupling shell connected to the proximal end of the catheter 242 and detachably connected to the driving motor corresponding to the medical catheter pump 240; an inner cavity is formed in the coupling shell to rotatably support the rotor therein; the coupling shell is provided with a first flushing interface and a second flushing interface connected to the inner cavity.

[0111] Fig. 3 also shows that the flushing pump assembly 210 includes a flushing pump 211 and a circulating pump 212. The functions of the flushing pump 211 and the circulating pump 212 will be described in detail below. Optionally, the flushing pump 211 and the circulating pump 212 can pump liquid through an extrusion pipeline, such as a roller pump, a peristaltic pump, etc., and the embodiments of the present application are not limited to this. Optionally, the flushing pump and the peristaltic pump can have an inlet and an outlet, and the flushing liquid enters the pump through the inlet, is pumped by a pumping mechanism (such as an impeller, etc.), and is discharged from the outlet.

[0112] In an exemplary embodiment, the ventricular assist system further includes an irrigation circuit, which forms the first irrigation passage and the second irrigation passage.

[0113] In one possible embodiment, the flushing pipeline includes a supplemental pipeline L1 connected to the flushing liquid container 250. The supplemental pipeline L1 is connected to the flushing liquid inlet pipe L2 and the flushing liquid outlet pipe L3 via a connecting structure. The flushing liquid inlet pipe L2 is connected to the second three-way valve and communicates with the second flushing port via the second three-way valve; the flushing liquid outlet pipe L3 is connected to the first three-way valve and communicates with the first flushing port via the first three-way valve. The flushing liquid inlet pipe L2, the cavity of the medical catheter pump, and the flushing liquid outlet pipe L3 form a circulating flushing loop, in which the flushing liquid circulates to cool the inner cavity of the medical catheter pump. In this configuration, the supplemental pipeline L1 forms the first flushing path through the connecting structure with the flushing liquid outlet pipe L3, and the supplemental pipeline L1 forms the second flushing path through the connecting structure with the flushing liquid inlet pipe L2. Optionally, the supplemental pipeline L1, the connecting structure, the flushing liquid inlet pipe L2, and the flushing liquid outlet pipe L3 can be integrally formed or assembled.

[0114] Optionally, a circulating pump is provided in the circulating flushing circuit to drive the flushing liquid flow. For example, the circulating pump is provided in the flushing liquid inlet pipe L2 or the flushing liquid outlet pipe L3, and pumps the flushing liquid by squeezing the pipe. Optionally, the flushing pump is provided in the replenishing pipe L1 to replenish the flushing liquid to the circulating flushing circuit.

[0115] In another possible embodiment, the flushing pipeline may include a flushing liquid inlet pipe and a flushing liquid outlet pipe, each of which is connected to the flushing liquid container 250. The flushing liquid inlet pipe is connected to the second three-way valve and communicates with the second flushing port through the second three-way valve; the flushing liquid outlet pipe is connected to the first three-way valve and communicates with the first flushing port through the first three-way valve. The flushing liquid inlet pipe, the cavity of the medical catheter pump, and the flushing liquid outlet pipe can still form a circulating flushing loop.

[0116] Optionally, a circulating pump is provided in the circulating flushing loop to drive the flushing fluid. For example, the circulating pump is provided in the flushing fluid outlet pipe and pumps the outflowing flushing fluid back into the flushing fluid container by squeezing the pipe. Alternatively, the flushing pump is provided in the flushing fluid inlet pipe to pump the flushing fluid into the inner lumen of the medical catheter pump.

[0117] For the second priming stage, Figure 4 shows a schematic diagram of a ventricular assist system in the second priming stage provided by an exemplary embodiment of the present application, the ventricular assist system including a flushing pump assembly 210, a first three-way valve 220, a second three-way valve 230 and a medical catheter pump 240.

[0118] During the second priming phase, the first valve port 221 and the third valve port 223 of the first three-way valve 220 are connected, and the fourth valve port 231 and the sixth valve port 233 of the second three-way valve 230 are connected. The second priming phase includes the stage of filling the first and second flushing pathways with flushing fluid via the flushing pump assembly 210. The ventricular assist system also includes a flushing fluid container 250. The first flushing pathway comprises a pathway formed by a flushing catheter connecting the first three-way valve 220 and the flushing fluid container 250. The second flushing pathway comprises a pathway formed by a flushing catheter connecting the second three-way valve 230 and the flushing fluid container 250.

[0119] During the second priming phase, if the first and second flushing pathways are connected to the first and second three-way valves 220 and 230, respectively, the flushing fluid in the flushing fluid container 250 is pumped into the first and second flushing pathways under the pumping action of the flushing pump assembly 210 and discharged from the third valve port 223 of the first and second three-way valves 220 and the sixth valve port 233 of the second three-way valve 230, respectively, thereby priming the first and second flushing pathways with flushing fluid and expelling air from the first and second flushing pathways. If the first and second flushing pathways are not connected to the first and second three-way valves 220 and 230, respectively, the flushing fluid is discharged from the nozzles of the first and second flushing pathways.

[0120] Figure 4 also shows that the flushing pump assembly 210 includes a flushing pump 211 and a circulation pump 212. The flushing pump 211 is located in the shared portion of the first and second flushing pathways at their starting points, while the circulation pump 212 is located in the second flushing pathway's unshared passageway. The shared portion can be referenced to the supplementary pipeline L1 described above, while the unshared passageway of the second flushing pathway can be referenced to the flushing liquid inlet pipe L2 described above, and will not be further described here.

[0121] FIG4 also shows that the medical catheter pump 240 includes a driving catheter handle 241 , a catheter 242 , and a pump head 243 .

[0122] Compared with the method of flushing the flushing passage and the inner cavity together (in this method, the flushing liquid first passes through the flushing passage and then enters the inner cavity, and the flushing liquid is pumped by the flushing pump assembly, which makes it difficult to form a large flow rate and difficult to completely exhaust the air in the inner cavity, and bubbles will remain in the inner cavity), in the embodiment of the present application, the flushing passage is pre-filled separately, thereby reducing the pre-filling path length of the inner cavity of the medical catheter pump. This not only avoids the influence of the flushing passage on the pre-filling and exhaust effect of the inner cavity of the medical catheter pump, but also can quickly discharge the bubbles in the flushing pipeline, avoiding the residual tiny bubbles in the flushing pipeline.

[0123] It can be understood that the above-mentioned first pre-charging stage and the second pre-charging stage can be performed first and then the second pre-charging stage, or the second pre-charging stage can be performed first and then the first pre-charging stage. The above distinction into two pre-charging stages is only to illustrate pre-charging at different times.

[0124] In summary, pre-filling can be performed in two stages, allowing different flushing locations to be filled with flushing liquid separately. Compared to pre-filling all flushing locations at once, filling each flushing location with flushing liquid in stages can effectively improve the pre-filling and degassing effect of each flushing location and avoid residual bubbles in the gaps between each flushing location.

[0125] In one embodiment, the priming stage is not divided into a first priming stage and a second priming stage (the first priming stage and the second priming stage can be performed simultaneously). The priming stage includes the stage of filling the first flushing passage and the second flushing passage with flushing fluid by the flushing pump assembly, and the stage of filling the inner cavity of the medical catheter pump with flushing fluid by the flushing assembly.

[0126] During the priming phase, a three-way valve is configured in a possible on-off state. Any two valve ports of the first three-way valve 220 are open, the fifth valve port 232 and the sixth valve port 233 of the second three-way valve 230 are open, and a flushing assembly 260 is connected to the sixth valve port 233 of the second three-way valve 230 or the third valve port 223 of the first three-way valve 220. The flushing assembly 260 is used to provide the flushing fluid required to fill the lumen of the medical catheter pump. The priming phase includes the stage where the flushing pump assembly 210 fills the first and second flushing pathways with flushing fluid, and the stage where the flushing assembly 260 fills the lumen of the medical catheter pump 240 with flushing fluid.

[0127] In this on-off state, the first flushing passage remains connected to the first three-way valve 220, while the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage, respectively. The flushing liquid in the first flushing passage is discharged from the third valve port 223 of the first three-way valve 220, and the flushing liquid in the second flushing passage is discharged from the terminal nozzle of the second flushing passage, thereby pre-charging the first and second flushing passages and expelling air from the first and second flushing passages.

[0128] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the sixth valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the fifth valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and is then discharged through the third valve port 223 of the first three-way valve 220.

[0129] For the pre-filling stage, another possible on-off state of the three-way valve is provided. The second valve port 222 and the third valve port 223 of the first three-way valve 220 are connected, and the fifth valve port 232 and the sixth valve port 233 of the second three-way valve 230 are connected. The sixth valve port 233 of the second three-way valve 230 or the third valve port 223 of the first three-way valve 220 is connected to a flushing assembly, which is used to provide the flushing fluid required to fill the inner cavity of the medical catheter pump.

[0130] In this on-off state, the first flushing passage is disconnected from the first three-way valve 220, and the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage, respectively, and discharged from the terminal nozzles of the first flushing passage and the second flushing passage, respectively, to achieve pre-filling of the first flushing passage and the second flushing passage, and to expel air from the first flushing passage and the second flushing passage.

[0131] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the sixth valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the fifth valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and is then discharged through the third valve port 223 of the first three-way valve 220.

[0132] Optionally, the flushing assembly is a rapid flushing assembly, connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, to fill the inner cavity of the medical catheter pump with flushing fluid; the instantaneous flow rate of the flushing fluid provided by the rapid flushing assembly is greater than the instantaneous flow rate of the flushing fluid provided by the flushing pump assembly. Optionally, the rapid flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the rapid flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly to the inner cavity of the medical catheter pump.

[0133] In summary, a method for simultaneous priming is provided, which saves time and meets clinical time requirements. The flushing pump assembly and the flushing assembly simultaneously fill the first flushing passage, the second flushing passage, and the inner lumen of the medical catheter pump with flushing fluid. Compared to filling the first flushing passage, the second flushing passage, and the inner lumen of the medical catheter pump with flushing fluid through the flushing pump assembly, the flushing assembly is introduced to simultaneously fill the flushing fluid. The flushing fluid provided by the flushing assembly will be primarily used to fill the inner lumen of the medical catheter pump. The introduction of additional flushing fluid flow accelerates the complete flushing process.

[0134] Compared with the method of flushing the flushing passage and the inner cavity as a whole in the related art (in this method, the flushing liquid first passes through the flushing passage and then enters the inner cavity, and the flushing liquid is pumped by the flushing pump assembly, which makes it difficult to form a large flow rate, difficult to completely expel the air in the inner cavity, and bubbles will remain in the inner cavity), in the embodiment of the present application, an additional flushing assembly is introduced to fill the inner cavity of the medical catheter pump, so that the flushing liquid can be quickly infused into the inner cavity, thereby more quickly expelling the air in the inner cavity, and it is not easy for bubbles to remain under instantaneous large flow rates. Compared with the method of pre-filling the inner cavity by pumping flushing liquid into the inner cavity through the flushing pump assembly, the exhaust effect of pre-filling the inner cavity by providing an instantaneous large flow rate through the fast flushing assembly is better.

[0135] Having already described the on-off state of the three-way valve during the priming phase, the on-off state of the three-way valve during the overall flushing phase will now be described. The overall flushing phase includes flushing the circulating flushing circuit formed by the first flushing path, the second flushing path, and the lumen of the medical catheter pump 240 using the flushing pump assembly 210.

[0136] 5 shows a schematic diagram of a ventricular assist system in an overall flushing stage provided by an exemplary embodiment of the present application. The ventricular assist system includes a flushing pump assembly 210 , a first three-way valve 220 , a second three-way valve 230 and a medical catheter pump 240 .

[0137] During the overall flushing phase, the first valve port 221 and the second valve port 222 of the first three-way valve 220 are connected, and the fourth valve port 231 and the fifth valve port 232 of the second three-way valve 230 are connected.

[0138] 5 also shows that the flushing pump assembly 210 includes a flushing pump 211 and a circulation pump 212. The flushing pump 211 is used to deliver flushing fluid to the inner cavity of the medical catheter pump 240 via the second flushing passage during the overall flushing phase, and the circulation pump 212 is used to control the circulation of the flushing fluid to flush the inner cavity of the medical catheter pump 240 during the overall flushing phase.

[0139] The flushing pump 211 is located in the shared portion of the first and second flushing pathways at their starting points, such as the aforementioned supplemental line L1. The circulation pump 212 is located in a portion of the second flushing pathway not shared with the first flushing pathway, such as the aforementioned flushing liquid inlet line L2. Figure 5 also shows a medical catheter pump 240 comprising a drive handle 241, a catheter 242, and a pump head 243.

[0140] Figure 5 shows the overall flushing stage. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the second flushing passage, injected into the inner cavity of the driving catheter handle 241, and circulated to the first flushing passage. The flushing liquid passing through the first flushing passage will flow into the second flushing passage again.

[0141] Furthermore, a portion of the flushing fluid flowing into the inner cavity of the driving catheter handle 241 flows into the catheter 242 of the medical catheter pump 240 and is completely discharged at the pump head 243 .

[0142] FIG6 shows a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application. The medical catheter pump system includes a medical catheter pump and a flushing pipeline. The method includes:

[0143] Step 620, during the pre-filling phase, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve. The following is an example of the flushing assembly being connected to the third valve port of the first three-way valve.

[0144] With reference to FIG2 , in the present application, a first flushing port (not shown) of a medical catheter pump 240 is connected to a first flushing pathway driven by the flushing pump assembly 210 via an intravalve passage between the second valve port 222 and the first valve port 221 of the first three-way valve 220. The first three-way valve 220 also has a third valve port 223. Optionally, the ventricular assist system further includes a flushing fluid container 250. The first flushing pathway comprises a pathway formed by the connection between the first three-way valve 220 and the flushing fluid container 250 via a flushing catheter.

[0145] The second flush port (not shown) of the medical catheter pump 240 is connected to the second flush path driven by the flush pump assembly 210 via the intravalve passage between the fifth valve port 232 and the fourth valve port 231 of the second three-way valve 230. The second three-way valve 230 also has a sixth valve port 233. Optionally, the ventricular assist system also includes a flushing fluid container 250. The second flush path comprises a passage formed by the connection between the second three-way valve 230 and the flushing fluid container 250 via a flushing catheter.

[0146] At least one flushing pipeline forms a first flushing passage and a second flushing passage, as described in the embodiment of Figure 3, which will not be described in detail here. Flushing liquid, in this application, refers to a liquid used to squeeze out air.

[0147] When the flushing liquid is filled in the priming stage, the flushing liquid in the first flushing path will flow out from the flushing liquid container through the first flushing path or through the first three-way valve. The flushing liquid in the second flushing path will flow out from the flushing liquid container through the second flushing path or through the second three-way valve.

[0148] When the flushing liquid is filled in the priming stage, the flushing liquid will flow from the second three-way valve to the first three-way valve via the inner cavity of the medical catheter pump.

[0149] Optionally, the medical catheter pump includes a driving catheter handle (ie, an inner cavity), a catheter, and a pump head.

[0150] Step 640 , in the overall flushing stage, flushing the circulating flushing loop formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump through the flushing pump assembly.

[0151] Optionally, during the overall flushing stage, the control device controls the flushing pump assembly to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

[0152] During the overall flushing phase, the first valve port and the second valve port of the first three-way valve are controlled to be connected, and the fourth valve port and the fifth valve port of the second three-way valve are controlled to be connected. The first three-way valve and the second three-way valve can be mechanical valves or electrically controlled valves.

[0153] During the overall flushing stage, the flushing pump assembly flushes the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump, as well as the pump head of the medical catheter pump.

[0154] In summary, the first three-way valve and the second three-way valve have different conduction states when flushing or priming at different flushing locations, including but not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different locations within the ventricular assist system can be flushed or primed separately, achieving priming or flushing at different flushing locations separately. Compared to priming or flushing all flushing locations at once, the method of priming or flushing at each location allows each flushing location to be fully flushed or primed, allowing the gas at different locations to be discharged more thoroughly, preventing bubbles from remaining in some small gaps, thereby improving the overall exhaust effect of priming or flushing the entire system.

[0155] Furthermore, by arranging a first three-way valve and a second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve, and the medical catheter pump can be flushed through the additional flushing component to exhaust the air in the inner cavity of the medical catheter pump and avoid bubbles remaining in the small gaps in the inner cavity of the medical catheter pump.

[0156] In the optional embodiment shown in Figure 6, the priming stage in step 620 includes a first priming stage and a second priming stage. Figure 7 shows a flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application, in which step 620 can be replaced by S1 and S2.

[0157] S1, in a first pre-filling stage, the inner cavity of the medical catheter pump is filled with flushing liquid through a flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve.

[0158] During the first pre-filling phase, the second and third ports of the first three-way valve are controlled to be in communication; and the fifth and sixth ports of the second three-way valve are controlled to be in communication. Referring to Figure 3 , Figure 3 shows that the second and third ports 222 and 223 of the first three-way valve 220 are in communication, and the fifth and sixth ports 232 and 233 of the second three-way valve 230 are in communication. The sixth port 233 of the second three-way valve 230 is connected to the flushing assembly 260.

[0159] Optionally, the flushing assembly includes a rapid flushing assembly; during the first priming phase, the rapid flushing assembly, connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, fills the inner cavity of the medical catheter pump with flushing fluid, and the instantaneous flow rate of the flushing fluid provided by the rapid flushing assembly is greater than the instantaneous flow rate of the flushing fluid provided by the flushing pump assembly. Optionally, the rapid flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the rapid flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly to the inner cavity of the medical catheter pump.

[0160] S2, in the second pre-filling stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly.

[0161] Optionally, in the second priming stage, the control device controls the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid.

[0162] During the second pre-filling phase, the first and third ports of the first three-way valve are controlled to be in communication, and the fourth and sixth ports of the second three-way valve are controlled to be in communication. Referring to FIG. 4 , FIG. 4 shows that the first and third ports 221 and 223 of the first three-way valve 220 are in communication, and the fourth and sixth ports 231 and 233 of the second three-way valve 230 are in communication.

[0163] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0164] In one embodiment, during the second priming phase, the rotational speeds of the flushing pump and the circulation pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range. Optionally, the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel are made equal or similar, the first sub-channel including the passageway not shared with the second flushing channel, and the second sub-channel including the passageway not shared with the first flushing channel; the flushing liquid is filled into the first and second flushing channels via the flushing pump and the circulation pump.

[0165] In one embodiment, the rotation speeds of the flushing pump and the circulation pump are controlled so that the first flushing passage and the second flushing passage are filled with the flushing fluid as quickly as possible. Clinically, the flushing fluid filling time needs to be as short as possible.

[0166] For example, in the structure shown in FIG4 , the speed of the flushing pump is twice that of the circulation pump, so that the flushing flow rates of the first flushing passage and the second flushing passage can remain relatively consistent, thereby enabling the first flushing passage and the second flushing passage to be pre-filled quickly and synchronously.

[0167] In summary, pre-filling can be performed in two stages, allowing different flushing locations to be filled with flushing liquid separately. Compared to pre-filling all flushing locations at once, filling each flushing location with flushing liquid in stages can effectively improve the pre-filling and degassing effect of each flushing location and avoid residual bubbles in the gaps between each flushing location.

[0168] In the optional embodiment shown in FIG6 , the priming stage in step 620 is not divided into the first priming stage and the second priming stage. FIG8 shows a flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application, in which step 620 can be replaced by S3:

[0169] S3, in the pre-filling stage, the inner cavity of the medical catheter pump is filled with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve; at the same time, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly.

[0170] Optionally, the control device controls the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid.

[0171] In one embodiment, during the pre-filling phase, any two valve ports of the first three-way valve are controlled to be open, and the fifth and sixth valve ports of the second three-way valve are controlled to be open. (At this time, the sixth valve port of the second three-way valve is connected to the flushing assembly).

[0172] In this on-off state, the first flushing passage remains connected to the first three-way valve 220, while the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage, respectively. The flushing liquid in the first flushing passage is discharged from the third valve port 223 of the first three-way valve 220, and the flushing liquid in the second flushing passage is discharged from the terminal nozzle of the second flushing passage, thereby pre-charging the first and second flushing passages and expelling air from the first and second flushing passages.

[0173] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the sixth valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the fifth valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and is then discharged through the third valve port 223 of the first three-way valve 220.

[0174] Alternatively, in one embodiment, during the pre-filling phase, the second and third valve ports of the first three-way valve are controlled to be connected, and the fifth and sixth valve ports of the second three-way valve are controlled to be connected. (At this time, the sixth valve port of the second three-way valve is connected to the flushing assembly, or the third valve port of the first three-way valve is connected to the flushing assembly.)

[0175] In this on-off state, the first flushing passage is disconnected from the first three-way valve 220, and the second flushing passage is disconnected from the second three-way valve 230. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first flushing passage and the second flushing passage, respectively, and discharged from the terminal nozzles of the first flushing passage and the second flushing passage, respectively, to achieve pre-filling of the first flushing passage and the second flushing passage, and to expel air from the first flushing passage and the second flushing passage.

[0176] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the second three-way valve 230 through the sixth valve port 233 of the second three-way valve 230, and enters the inner cavity of the driving catheter handle 241 through the fifth valve port 232 of the second three-way valve 230. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the first three-way valve 220 from the second valve port 222 of the first three-way valve 220, and is then discharged through the third valve port 223 of the first three-way valve 220.

[0177] Alternatively, in one embodiment, during the pre-filling phase, any two valve ports of the second three-way valve are controlled to be open, and the second and third valve ports of the first three-way valve are controlled to be open. (At this time, the third valve port of the first three-way valve is connected to the flushing assembly.)

[0178] In this on-off state, the second flushing passage remains connected to the second three-way valve 230, while the first flushing passage is disconnected from the first three-way valve 220. Under the pumping action of the flushing pump assembly 210, the flushing liquid in the flushing liquid container 250 is infused into the first and second flushing passages, respectively. The flushing liquid in the second flushing passage is discharged from the sixth valve port 233 of the second three-way valve 230, and the flushing liquid in the first flushing passage is discharged from the terminal nozzle of the first flushing passage, thereby pre-charging the first and second flushing passages and expelling air from the first and second flushing passages.

[0179] The inner cavity pre-filling process synchronized with the above-mentioned pipeline pre-filling process is as follows: under the pumping action of the flushing assembly 260, the flushing liquid flows into the first three-way valve 220 through the third valve port 223 of the first three-way valve 220, and enters the inner cavity of the driving catheter handle 241 through the second valve port 222 of the first three-way valve 220. The flushing liquid enters the inner cavity to discharge the air in the inner cavity, and enters the second three-way valve 230 from the fifth valve port 232 of the second three-way valve 230, and is then discharged through the sixth valve port 233 of the second three-way valve 230.

[0180] During the pre-filling stage, the sixth valve port of the second three-way valve or the third valve port of the first three-way valve is connected to a flushing assembly.

[0181] Optionally, the flushing assembly includes a rapid flushing assembly; the rapid flushing assembly, connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, fills the inner cavity of the medical catheter pump with flushing fluid, wherein the instantaneous flow rate of the flushing fluid provided by the rapid flushing assembly is greater than the instantaneous flow rate of the flushing fluid provided by the flushing pump assembly. Optionally, the rapid flushing assembly is a syringe. Specifically, the instantaneous flow rate provided by the rapid flushing assembly to the inner cavity of the medical catheter pump is greater than the instantaneous flow rate provided by the flushing pump assembly to the inner cavity of the medical catheter pump.

[0182] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0183] In one embodiment, the rotational speeds of the flushing pump and the circulation pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range. Optionally, the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel are made equal or similar, the first sub-channel includes a channel on the first flushing channel that is not shared with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that is not shared with the first flushing channel; the flushing liquid is filled into the first flushing channel and the second flushing channel by the flushing pump and the circulation pump.

[0184] In one embodiment, the rotation speeds of the flushing pump and the circulation pump are controlled so that the first flushing passage and the second flushing passage are filled with the flushing fluid as quickly as possible. Clinically, the flushing fluid filling time needs to be as short as possible.

[0185] For example, the speed of the flushing pump is twice that of the circulation pump, so that the flushing flow rates of the first flushing passage and the second flushing passage can remain relatively consistent, thereby quickly and synchronously pre-filling the first flushing passage and the second flushing passage.

[0186] In summary, a method for simultaneous priming is provided, which saves time and meets clinical time requirements. By using the flushing pump assembly and the flushing assembly to simultaneously fill the first flushing line, the second flushing line, and the inner lumen of the medical catheter pump with flushing fluid, compared to using the flushing pump assembly to simultaneously fill the first flushing line, the second flushing line, and the inner lumen of the medical catheter pump with flushing fluid, the flushing assembly is introduced to also fill the flushing fluid at the same time. The flushing fluid provided by the flushing assembly will be primarily used to fill the inner lumen of the medical catheter pump, and the introduction of additional flushing fluid flow speeds up the complete flushing process.

[0187] Compared with the method of flushing the flushing passage and the inner cavity in the related art (in this method, the flushing liquid first passes through the flushing passage and then enters the inner cavity, and the flushing liquid is pumped by the flushing pump assembly, which makes it difficult to form a large flow rate and difficult to completely expel the air in the inner cavity, and bubbles will remain in the inner cavity), in the embodiment of the present application, an additional flushing assembly is introduced to fill the inner cavity of the medical catheter pump, so that the flushing liquid can be quickly infused into the inner cavity, thereby more quickly expelling the air in the inner cavity, and it is not easy for bubbles to remain under instantaneous large flow rates. Compared with the method of pre-filling the inner cavity by pumping flushing liquid into the inner cavity through the flushing pump assembly, the exhaust effect of pre-filling the inner cavity by providing an instantaneous large flow rate through the fast flushing assembly is better.

[0188] Based on the optional embodiment shown in FIG6 , FIG9 shows a flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application, which further includes S4 before step 640:

[0189] S4, in the transition phase before entering the overall flushing phase, the pumping flow of the flushing pump assembly is controlled to be a second flow, which is smaller than the first flow. The first flow is the pumping flow of the flushing pump assembly in the pre-filling phase.

[0190] Optionally, during a transition phase prior to entering the overall flushing phase, the control device controls the flushing pump assembly to deliver a pumping flow rate of a second flow rate. Optionally, the second flow rate is the flow rate in the catheter of the medical catheter pump. Optionally, the second flow rate does not exceed an inlet flow rate acceptable to the living body.

[0191] In an optional embodiment, during the transition phase, the control device may display a prompt message indicating a switch to the overall flushing phase; upon receiving a confirmation operation in response to the prompt message, the overall flushing phase may be entered. For example, a prompt message may be displayed, such as "Please turn the three-way valve at the medical catheter pump flushing fluid inlet and outlet to the specified position!" or "Overall flushing is about to begin, please confirm."

[0192] In one embodiment, during the transition phase, any two valve ports of the first three-way valve are both opened, and the fifth valve port and the sixth valve port of the second three-way valve are controlled to be opened.

[0193] In another embodiment, during the transition phase, the second valve port and the third valve port of the first three-way valve are connected, and the fifth valve port and the sixth valve port of the second three-way valve are controlled to be connected.

[0194] In yet another embodiment, during the transition phase, any two valve ports of the second three-way valve are both connected, and the second valve port and the third valve port of the first three-way valve are both connected.

[0195] The above three conduction states are the three conduction states that may be formed in the pre-filling stage. In the transition stage, you can just wait and keep the conduction state of the three-way valve left over from the pre-filling stage until it is adjusted to the required conduction state to enter the overall flushing stage.

[0196] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0197] In one embodiment, the rotational speeds of the flushing pump and the circulation pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range. Optionally, the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel are made equal or similar, the first sub-channel includes a portion of the first flushing channel that does not overlap with the second flushing channel, and the second sub-channel includes a portion of the second flushing channel that does not overlap with the first flushing channel; the flushing liquid is filled into the first and second flushing channels via the flushing pump and the circulation pump.

[0198] Optionally, the medical catheter pump includes a driving catheter handle, a catheter and a pump head. The pumping flow rate of the above-mentioned flushing pump assembly refers to the flushing liquid flow rate in the catheter of the medical catheter pump.

[0199] In summary, the transition phase reduces the pumping flow rate of the flushing pump assembly to prevent excessive flushing fluid loss. Furthermore, during the transition phase, the control device only needs to control the flushing pump assembly to reduce its work, resulting in the aforementioned lower flushing fluid flow rate, while waiting for the flushing pipeline and three-way valve to switch to the connection mode and conduction state corresponding to the overall flushing phase. This reduces flushing fluid waste during the transition phase between the pre-filling phase and the overall flushing phase.

[0200] Based on the optional embodiment shown in FIG6 , FIG10 shows a flow chart of a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application, which further includes S5 before step 640:

[0201] S5, in the overall flushing stage, controlling the first valve port and the second valve port of the first three-way valve to be connected, and controlling the fourth valve port and the fifth valve port of the second three-way valve to be connected;

[0202] 5 , FIG4 shows that at this time the first valve port 221 and the second valve port 222 of the first three-way valve 220 are connected, and the fourth valve port 231 and the fifth valve port 232 of the second three-way valve 230 are connected.

[0203] Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump is arranged in a common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in a passage on the second flushing passage that is not shared with the first flushing passage.

[0204] Step 640 includes: during the overall flushing stage, controlling the rotation speed of the flushing pump based on the flushing liquid flow rate of the catheter of the medical catheter pump; and controlling the rotation speed of the circulation pump based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; flushing the circulating flushing circuit and the catheter of the medical catheter pump through the flushing pump and the circulating pump.

[0205] Optionally, the flushing pump and the circulation pump are peristaltic pumps, which pump the flushing liquid by squeezing the flushing catheter.

[0206] It should be noted that this application is for flushing a medical catheter pump, an invasive catheter pump used in vivo. The entire flushing phase of the medical catheter pump occurs within a living organism, which cannot tolerate excessively high inflow rates. The flushing pump's rotational speed ensures that the flushing fluid flow rate in the medical catheter pump's catheter is less than the acceptable inflow rate. The circulating pump's rotational speed allows for high-speed flushing in the circulating flushing loop.

[0207] Illustratively, the flushing pump is controlled to rotate at a first speed to achieve a first target flow rate in the catheter of the medical catheter pump. The first target flow rate does not exceed an acceptable inlet flow rate for a living organism and is equal to or approximately equal to the flow rate of flushing fluid entering the human body through the pump head. Illustratively, the circulation pump is controlled to rotate at a second speed to achieve a second target flow rate. The second target flow rate is equal to or approximately equal to the sum of the circulating flow rate in the lumen of the medical catheter pump and the inlet flow rate of flushing fluid in the lumen of the medical catheter pump. The second target flow rate is greater than a preset threshold value to achieve high-speed circulation of flushing fluid in the lumen of the medical catheter pump.

[0208] FIG11 illustrates a flushing method for a medical catheter pump system provided by an exemplary embodiment of the present application. The medical catheter pump system includes a medical catheter pump and at least one flushing line. The method is executed by a control device corresponding to the flushing pump assembly, and the control device is connected to the flushing pump assembly. The method includes:

[0209] Step 1120 , in the pre-filling stage, controlling the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid;

[0210] With reference to FIG2 , in the present application, a first flushing port (not shown) of a medical catheter pump 240 is connected to a first flushing pathway driven by the flushing pump assembly 210 via an intravalve passage between the second valve port 222 and the first valve port 221 of the first three-way valve 220. The first three-way valve 220 also has a third valve port 223. Optionally, the ventricular assist system further includes a flushing fluid container 250. The first flushing pathway comprises a pathway formed by the connection between the first three-way valve 220 and the flushing fluid container 250 via a flushing catheter.

[0211] The second flush port (not shown) of the medical catheter pump 240 is connected to the second flush path driven by the flush pump assembly 210 via the intravalve passage between the fifth valve port 232 and the fourth valve port 231 of the second three-way valve 230. The second three-way valve 230 also has a sixth valve port 233. Optionally, the ventricular assist system also includes a flushing fluid container 250. The second flush path comprises a passage formed by the connection between the second three-way valve 230 and the flushing fluid container 250 via a flushing catheter.

[0212] At least one flushing pipeline forms a first flushing passage and a second flushing passage, as described in the embodiment of FIG3 and will not be repeated here. Optionally, the flushing pump assembly includes a flushing pump and a circulation pump, the flushing pump being disposed in the overlapping portion of the first flushing passage and the second flushing passage at the starting position, and the circulation pump being disposed in the passage of the second flushing passage that does not overlap with the first flushing passage.

[0213] In one embodiment, during the pre-filling stage, the rotational speeds of the flushing pump and the circulation pump are controlled so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range, the first sub-channel includes a channel on the first flushing channel that does not overlap with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that does not overlap with the first flushing channel; the first flushing channel and the second flushing channel are filled with flushing liquid through the flushing pump and the circulation pump.

[0214] For the rest of the content, please refer to the relevant introduction of Figures 6 to 10 above, which will not be repeated here.

[0215] Step 1140 , during the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump.

[0216] In one embodiment, a transition phase is further included before the overall flushing phase. In the transition phase before entering the overall flushing phase, the pumping flow of the flushing pump is controlled to be a second flow rate, which is smaller than a first flow rate. The first flow rate is the pumping flow rate of the flushing pump in the pre-filling phase.

[0217] In one embodiment, during the overall flushing stage, the rotation speed of the flushing pump is controlled based on the flushing liquid flow rate of the catheter of the medical catheter pump; and the rotation speed of the circulating pump is controlled based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump; the circulating flushing circuit and the catheter of the medical catheter pump are flushed by the flushing pump and the circulating pump.

[0218] For the rest of the content, please refer to the relevant introduction of Figures 6 to 10 above, which will not be repeated here.

[0219] In summary, the first three-way valve and the second three-way valve have different conduction states when flushing or priming at different flushing locations, including but not limited to the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump. By switching the conduction states of the first three-way valve and the second three-way valve, different locations within the ventricular assist system can be flushed or primed separately, achieving priming or flushing at different flushing locations separately. Compared to priming or flushing all flushing locations at once, the method of priming or flushing at different locations allows each flushing location to be fully flushed or primed, allowing the gas at different flushing locations to be discharged more thoroughly, preventing bubbles from remaining in some small gaps, thereby improving the overall exhaust effect of priming or flushing the entire system.

[0220] Furthermore, by arranging a first three-way valve and a second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve, and the medical catheter pump can be flushed through the additional flushing component to exhaust the air in the inner cavity of the medical catheter pump and avoid bubbles remaining in the small gaps in the inner cavity of the medical catheter pump.

[0221] The present application provides a consumable for a medical catheter pump system, the consumable for the medical catheter pump system comprising a first three-way valve and a second three-way valve;

[0222] The first valve port of the first three-way valve is used to connect to a first flushing passage driven by the flushing pump assembly, and the second valve port of the first three-way valve is used to connect to a first flushing interface of a medical catheter pump;

[0223] The fourth valve port of the second three-way valve is used to connect to the second flushing passage driven by the flushing pump assembly, and the fifth valve port of the second three-way valve is used to connect to the second flushing interface of the medical catheter pump.

[0224] In one embodiment, the consumables of the medical catheter pump system also include a flushing pipeline, which includes a first flushing passage and a second flushing passage. The first three-way valve is arranged at the end of the pipe opening corresponding to the first flushing passage, and the second three-way valve is arranged at the end of the pipe opening corresponding to the second flushing passage.

[0225] In one embodiment, the medical catheter pump consumable system further includes a medical catheter pump, and the medical catheter pump includes:

[0226] catheter;

[0227] A drive shaft is rotatably disposed in the conduit;

[0228] The pump head comprises: a pump housing connected to the distal end of the catheter, and an impeller housed in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate and pump blood;

[0229] The drive catheter handle includes: a rotor driven by a drive motor; a proximal end of a drive shaft connected to the rotor; an inner cavity formed in the drive catheter handle for rotatably supporting the rotor; a catheter communicating with the inner cavity; a first flushing port and a second flushing port communicating with the inner cavity are provided in the drive catheter handle; a first three-way valve is provided at the first flushing port, and a second three-way valve is provided at the second flushing port;

[0230] Among them, a part of the flushing liquid entering the inner cavity through the second flushing interface enters the catheter and is completely discharged into the human body at the pump head, and the other part passes through the rotor and is discharged from the first flushing interface.

[0231] Figure 12 shows a schematic diagram of a ventricular assist system provided by another exemplary embodiment of the present application. The ventricular assist system is a transcatheter ventricular assist system, including a control device and a medical catheter pump system used in conjunction with the control device. Among them, the control device 130 includes at least a console 131 and a drive motor 132. Optionally, the control device 130 also includes a flushing pump assembly (not shown in the figure), and the flushing pump assembly includes a flushing pump and a circulation pump. Clinical medical staff can monitor the system status and patient physiological parameters on the control host interface, and provide different degrees of circulatory assistance by adjusting the catheter pump speed according to the patient's needs, thereby temporarily maintaining the blood circulation of the patient's vital organs and unloading the heart.

[0232] The catheter pump system includes a catheter pump 120 , a delivery system (not shown in the figure), and a flushing pipeline 110 .

[0233] The catheter pump 120 includes a pump head 123 (containing an impeller, a stent, and a membrane), a catheter 122, a drive catheter handle 121 (containing a drive catheter locking connector), an irrigation pressure sensor, and a drive catheter irrigation line connector. The catheter pump can be percutaneously implanted into the heart through a peripheral blood vessel. The pump head 123 is implanted between the left ventricle and the ascending aorta. The blood inlet of the pump head 123 is implanted in the left ventricle, and the blood outlet of the pump head 123 is implanted in the ascending aorta. The drive motor 132 can be connected to the interventional pump to drive the impeller in the pump head 123 to rotate, thereby pumping blood from the left ventricle into the ascending aorta, achieving ventricular assist function.

[0234] The delivery system consists of a dilator, an interventional sheath, and an introducer. The delivery system is used to dilate the blood vessels and provide a pathway for the interventional pump to be placed into the heart. The introducer and interventional sheath function as a retractor for the pump head. The introducer and dilator are removed after the interventional pump is placed. The interventional sheath remains in the patient's blood vessels until the interventional pump is removed, at which point it also functions as a retractor for the pump head.

[0235] The flushing pipeline 110 at least includes the aforementioned supplementary pipeline, a connecting structure, a flushing liquid inlet pipe, and a flushing liquid outlet pipe.

[0236] The flushing pump can be connected to the flushing pipeline 110. The flushing pump realizes the flushing liquid delivery and control function by squeezing the flushing pipeline, thereby preventing blood from entering the driving catheter of the interventional pump and generating thrombus.

[0237] The flushing pump drives the flushing pump tube on the flushing pipeline flushing kit, and can pump the flushing liquid in the liquid bag 140 connected to the flushing tube into the cavity in the interventional pump through the flushing tube, thereby preventing blood from entering the interventional pump catheter 122.

[0238] In one embodiment, the three-way valve is a consumable component in the catheter pump 120. Schematically, referring to FIG13 , FIG13 shows that the three-way valve is a consumable component in the catheter pump. In this case, the flushing line will have a connector 170 for connecting to the three-way valve. Optionally, connector 170 may be a Luer connector.

[0239] In one embodiment, a three-way valve is a consumable component in the flushing line 110. Schematically, referring to FIG. 14 , FIG. 14 illustrates a three-way valve as a consumable component in the flushing line. In this case, the drive catheter handle 121 includes a connector 170 for connecting to the three-way valve. Optionally, connector 170 may be a Luer connector.

[0240] FIG15 shows a control device for a medical catheter pump system provided by an exemplary embodiment of the present application. The medical catheter pump system includes a medical catheter pump and at least one flushing pipeline. The first flushing interface of the medical catheter pump is connected to the first flushing pathway driven by the flushing pump assembly via the valve passage between the second valve port and the first valve port of the first three-way valve. The second flushing interface of the medical catheter pump is connected to the second flushing pathway driven by the flushing pump assembly via the valve passage between the fifth valve port and the fourth valve port of the second three-way valve. The at least one flushing pipeline forms the first flushing pathway and the second flushing pathway. The device includes:

[0241] Control module 1501, configured to, during the priming phase, fill the first flushing passage and the second flushing passage with flushing liquid via the flushing pump assembly, and fill the inner cavity of the medical catheter pump with flushing liquid via the flushing assembly connected to the sixth valve port of the second three-way valve;

[0242] The control module 1501 is also used to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly during the overall flushing stage.

[0243] In an optional embodiment, the control module 1501 is also used to fill the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve in the first pre-filling stage; and to fill the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly in the second pre-filling stage.

[0244] In an optional embodiment, the control module 1501 is further configured to control the second valve port and the third valve port of the first three-way valve to be connected during the first pre-charging stage; and to control the fifth valve port and the sixth valve port of the second three-way valve to be connected.

[0245] In an optional embodiment, the control module 1501 is further used to control the first valve port and the third valve port of the first three-way valve to be connected during the second pre-charging stage; and to control the fourth valve port and the sixth valve port of the second three-way valve to be connected.

[0246] In an optional embodiment, the control module 1501 is also used to fill the inner cavity of the medical catheter pump with flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve during the pre-filling stage; at the same time, fill the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly.

[0247] In an optional embodiment, the control module 1501 is further configured to control any two valve ports of the first three-way valve to be connected, and to control the fifth valve port and the sixth valve port of the second three-way valve to be connected during the pre-charging stage.

[0248] In an optional embodiment, the control module 1501 is further configured to control the connection between the second valve port and the third valve port of the first three-way valve, and to control the connection between the fifth valve port and the sixth valve port of the second three-way valve during the pre-charging stage.

[0249] In an optional embodiment, the flushing assembly includes a rapid flushing assembly. The control module 1501 is further configured to fill the inner cavity of the medical catheter pump with flushing fluid via the rapid flushing assembly connected to the sixth valve port of the second three-way valve, wherein the instantaneous flow rate of the flushing fluid provided by the rapid flushing assembly is greater than the instantaneous flow rate of the flushing fluid provided by the flushing pump assembly.

[0250] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, wherein the flushing pump is disposed in a portion of the first flushing passageway and the second flushing passageway that is located at a common starting position, and the circulation pump is disposed in a portion of the second flushing passageway that is not shared with the first flushing passageway. The control module 1501 is further configured to control the rotational speeds of the flushing pump and the circulation pump so that the difference between the flushing liquid flow rate of the first sub-passageway and the flushing liquid flow rate of the second sub-passageway is within a preset range, wherein the first sub-passageway includes the portion of the first flushing passageway that is not shared with the second flushing passageway, and the second sub-passageway includes the portion of the second flushing passageway that is not shared with the first flushing passageway; the flushing pump and the circulation pump are used to fill the first flushing passageway and the second flushing passageway with flushing liquid.

[0251] In an optional embodiment, the control module 1501 is also used to control the pumping flow of the flushing pump assembly to a second flow rate in a transition stage before entering the overall flushing stage, where the second flow rate is smaller than the first flow rate, and the first flow rate is the pumping flow rate of the flushing pump assembly in the pre-filling stage.

[0252] In an optional embodiment, the control module 1501 is further configured to control any two valve ports of the first three-way valve to be open, and control the fifth valve port and the sixth valve port of the second three-way valve to be open during the transition phase.

[0253] In an optional embodiment, the control module 1501 is further configured to control the second valve port and the third valve port of the first three-way valve to be connected, and to control the fifth valve port and the sixth valve port of the second three-way valve to be connected during the transition phase.

[0254] In an optional embodiment, the device further includes a display module 1502. The display module 1502 is configured to display a prompt message indicating that the device is switching to the overall flushing stage during the transition stage, and to enter the overall flushing stage upon receiving a confirmation operation in response to the prompt message.

[0255] In an optional embodiment, the control module 1501 is further configured to control the connection between the first valve port and the second valve port of the first three-way valve, and to control the connection between the fourth valve port and the fifth valve port of the second three-way valve during the overall flushing stage.

[0256] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump. The flushing pump is disposed in a portion of the first flushing pathway and the second flushing pathway that is shared at the starting position, and the circulation pump is disposed in a portion of the second flushing pathway that is not shared with the first flushing pathway. Control module 1501 is further configured to control the speed of the flushing pump during the overall flushing phase based on the flushing fluid flow rate of the catheter of the medical catheter pump; and to control the speed of the circulation pump based on the flushing fluid flow rate of the circulating flushing loop formed by the first flushing pathway, the second flushing pathway, and the inner lumen of the medical catheter pump. The flushing pump and the circulation pump are used to flush the circulating flushing loop and the catheter of the medical catheter pump.

[0257] In summary, by arranging the first three-way valve and the second three-way valve between the flushing pump assembly and the medical catheter pump, the medical catheter pump can be connected to an additional flushing assembly through the three-way valve, and the medical catheter pump can be flushed through the additional flushing assembly, thereby removing bubbles in the small gaps in the medical catheter pump.

[0258] Furthermore, the additional flushing assembly reduces the pumping speed and pressure of the flushing pump assembly, so that the flushing pump assembly is no longer used to fill all flushing positions with flushing liquid, but is only used to fill some flushing positions with flushing liquid.

[0259] FIG16 shows a control device for a medical catheter pump system provided by an exemplary embodiment of the present application. The medical catheter pump system includes a medical catheter pump and at least one flushing pipeline. The first flushing interface of the medical catheter pump is connected to the first flushing pathway driven by the flushing pump assembly via the valve passage between the second valve port and the first valve port of the first three-way valve. The second flushing interface of the medical catheter pump is connected to the second flushing pathway driven by the flushing pump assembly via the valve passage between the fifth valve port and the fourth valve port of the second three-way valve. The at least one flushing pipeline forms the first flushing pathway and the second flushing pathway. The device includes:

[0260] The control module 1601 is used to control the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid during the pre-filling stage;

[0261] During the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

[0262] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump, wherein the flushing pump is disposed in a shared portion of the first flushing passageway and the second flushing passageway at a starting position, and the circulation pump is disposed in a passageway of the second flushing passageway that is not shared with the first flushing passageway. The control module 1601 is further configured to control the rotational speeds of the flushing pump and the circulation pump during the pre-filling phase so that the difference between the flushing liquid flow rate of the first sub-passageway and the flushing liquid flow rate of the second sub-passageway is within a preset range, wherein the first sub-passageway includes a passageway of the first flushing passageway that is not shared with the second flushing passageway, and the second sub-passageway includes a passageway of the second flushing passageway that is not shared with the first flushing passageway; the first flushing passageway and the second flushing passageway are filled with flushing liquid via the flushing pump and the circulation pump.

[0263] In an optional embodiment, the control module 1601 is further configured to control the pumping flow of the flushing pump to be a second flow, where the second flow is smaller than the first flow, and the first flow is the pumping flow of the flushing pump in the pre-filling stage.

[0264] In an optional embodiment, the flushing pump assembly includes a flushing pump and a circulation pump. The flushing pump is disposed in a portion of the first flushing pathway shared by the second flushing pathway at the starting position, and the circulation pump is disposed in a portion of the second flushing pathway not shared with the first flushing pathway. Control module 1601 is further configured to control the rotational speed of the flushing pump based on the flushing fluid flow rate of the catheter of the medical catheter pump during the overall flushing phase; and to control the rotational speed of the circulation pump based on the flushing fluid flow rate of the circulating flushing loop formed by the first flushing pathway, the second flushing pathway, and the inner lumen of the medical catheter pump. The flushing pump and the circulation pump are used to flush the circulating flushing loop and the catheter of the medical catheter pump.

[0265] In an optional embodiment, the control device also includes a flushing pump assembly, which includes a flushing pump and a circulation pump; the flushing pump is used to deliver flushing liquid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage, and the circulation pump is used to control the flushing liquid to circulate and flush the inner cavity of the medical catheter pump during the overall flushing stage.

[0266] In an optional embodiment, the flushing pump is provided in a common portion of the first flushing passage and the second flushing passage at a starting position, and the circulation pump is provided in a passage of the second flushing passage that is not shared with the first flushing passage.

[0267] In summary, by arranging the first three-way valve and the second three-way valve between the flushing passage and the medical catheter pump, the medical catheter pump can be connected to an additional flushing component through the three-way valve, and the medical catheter pump can be flushed through the additional flushing component, thereby removing bubbles in the small gaps in the medical catheter pump.

[0268] Furthermore, the additional flushing assembly reduces the pumping speed and pressure of the flushing pump assembly, so that the flushing pump assembly is no longer used to fill all flushing positions with flushing liquid, but is only used to fill some flushing positions with flushing liquid.

[0269] An embodiment of the present application further provides a control device, which is used to implement the flushing method of the medical catheter pump system provided by the above-mentioned method embodiments.

[0270] An embodiment of the present application further provides a computer storage medium storing at least one computer program, which is loaded and executed by a processor to implement the flushing method of the medical catheter pump system provided by the above-mentioned method embodiments.

[0271] An embodiment of the present application further provides a chip, which includes a programmable logic circuit or a program. A device equipped with the chip is used to implement the flushing method of the medical catheter pump system described above.

[0272] An embodiment of the present application also provides a computer program product, which includes a computer program stored in a computer storage medium; the computer program is read and executed from the computer storage medium by a processor of a computer device, so that the computer device executes to implement the flushing method of the medical catheter pump system provided by the above-mentioned method embodiments.

[0273] It should be noted that, unless otherwise expressly defined herein, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field. Unless otherwise expressly stated, all references to "an element, device, component, device, step, etc." are to be interpreted openly as referring to at least one instance of an element, device, component, device, step, etc. Unless expressly stated otherwise, the steps of any method disclosed herein do not have to be performed in the exact order disclosed.

[0274] It should be understood that the term "plurality" used herein refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0275] Those skilled in the art will understand that all or part of the steps of implementing the above embodiments may be accomplished by hardware, or by a program instructing the relevant hardware to accomplish the steps. The program may be stored in a computer storage medium, and the above-mentioned storage medium may be a read-only memory, a disk, or an optical disk, etc.

[0276] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent switches, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A ventricular assist system, characterized in that: The ventricular assist system comprises a flushing pump assembly, a first three-way valve, a second three-way valve and a medical catheter pump; The first three-way valve comprises a first valve port, a second valve port and a third valve port, the first valve port is connected to a first flushing passage driven by the flushing pump assembly, and the second valve port is connected to a first flushing interface of the medical catheter pump; The second three-way valve includes a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is connected to a second flushing passage driven by the flushing pump assembly, and the fifth valve port is connected to a second flushing interface of the medical catheter pump.

2. The ventricular assist system according to claim 1, characterized in that: The first three-way valve and the second three-way valve have different conduction states when flushing or pre-filling different flushing positions, and the flushing position includes the first flushing passage and the second flushing passage, or the flushing position includes the inner cavity of the medical catheter pump.

3. A flushing method for a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a fifth valve port and a fourth valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path; The method comprises: in the priming stage, filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly, and filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve; During the overall flushing stage, the flushing pump assembly flushes the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

4. The method according to claim 3, characterized in that In the priming stage, the first flushing passage and the second flushing passage are filled with flushing liquid through the flushing pump assembly, and the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, including: In the first pre-filling stage, the inner cavity of the medical catheter pump is filled with the flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve; In the second priming stage, the first flushing passage and the second flushing passage are filled with the flushing fluid by the flushing pump assembly.

5. The method according to claim 4, characterized in that In the first pre-charging stage, the second valve port and the third valve port of the first three-way valve are controlled to be connected; and the fifth valve port and the sixth valve port of the second three-way valve are controlled to be connected; In the second pre-charging stage, the first valve port and the third valve port of the first three-way valve are controlled to be connected; and the fourth valve port and the sixth valve port of the second three-way valve are controlled to be connected.

6. The method according to claim 3, characterized in that In the pre-charging stage, any two valve ports of the first three-way valve are controlled to be connected, and the fifth valve port and the sixth valve port of the second three-way valve are controlled to be connected; or In the pre-charging stage, any two valve ports of the second three-way valve are controlled to be connected, and the second valve port and the third valve port of the first three-way valve are controlled to be connected; or The flushing assembly includes a quick flushing assembly; the flushing assembly connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve fills the inner cavity of the medical catheter pump with the flushing liquid, including: The inner cavity of the medical catheter pump is filled with the flushing liquid through a quick flushing component connected to the sixth valve port of the second three-way valve or the third valve port of the first three-way valve, and the instantaneous flow rate of the flushing liquid provided by the quick flushing component is greater than the instantaneous flow rate of the flushing liquid provided by the flushing pump component.

7. The method according to claim 3, characterized in that The method further comprises: During the overall flushing stage, the first valve port and the second valve port of the first three-way valve are controlled to be connected, and the first valve port of the second three-way valve and the fourth valve port and the second and fifth valve ports of the second three-way valve are controlled to be connected.

8. The method according to claim 3, characterized in that The flushing pump assembly includes a flushing pump and a circulation pump, wherein the flushing pump is arranged in the common part of the first flushing passage and the second flushing passage at the starting position, and the circulation pump is arranged in the passage of the second flushing passage that is not shared with the first flushing passage; wherein, The step of filling the first flushing passage and the second flushing passage with the flushing liquid by the flushing pump assembly comprises: Controlling the rotation speeds of the flushing pump and the circulation pump so that the difference between the flushing liquid flow rate of the first sub-channel and the flushing liquid flow rate of the second sub-channel is within a preset range, the first sub-channel includes a channel on the first flushing channel that is not shared with the second flushing channel, and the second sub-channel includes a channel on the second flushing channel that is not shared with the first flushing channel; Filling the first flushing passage and the second flushing passage with the flushing liquid by the flushing pump and the circulation pump; or In the overall flushing stage, flushing the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump by the flushing pump assembly includes: During the overall flushing stage, the rotation speed of the flushing pump is controlled based on the flushing liquid flow rate of the catheter of the medical catheter pump; and, controlling the rotation speed of the circulation pump based on the flushing liquid flow rate of the circulating flushing circuit formed by the first flushing passage, the second flushing passage, and the inner cavity of the medical catheter pump; The circulating flushing loop and the catheter of the medical catheter pump are flushed by the flushing pump and the circulating pump.

9. The method according to claim 3, characterized in that: The method further comprises: In the transition phase before entering the overall flushing phase, the pumping flow of the flushing pump assembly is controlled to be a second flow, which is smaller than a first flow. The first flow is the pumping flow of the flushing pump assembly in the pre-filling phase.

10. The method according to claim 9, characterized in that During the transition phase, Any two valve ports of the first three-way valve are connected, and the fifth valve port and the sixth valve port of the second three-way valve are connected; or Any two valve ports of the second three-way valve are connected, and the second valve port and the third valve port of the first three-way valve are connected.

11. The method according to claim 10, characterized in that The method further comprises: In the transition phase, the display switches to the prompt information of the overall flushing phase; In response to receiving a confirmation operation of the prompt information, the overall flushing stage is entered.

12. A method for flushing a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a fifth valve port and a fourth valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path; The method is performed by a control device corresponding to the flushing pump assembly, the control device is connected to the flushing pump assembly, and the method includes: In the pre-filling stage, the flushing pump assembly is controlled to fill the first flushing passage and the second flushing passage with flushing liquid; During the overall flushing stage, the flushing pump assembly is controlled to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump.

13. A consumable material for a medical catheter pump system, characterized in that: The consumables include a first three-way valve and a second three-way valve; The first valve port of the first three-way valve is used to connect to a first flushing passage driven by a flushing pump assembly, and the second valve port of the first three-way valve is used to connect to a first flushing interface of the medical catheter pump; The fourth valve port of the second three-way valve is used to connect to the second flushing passage driven by the flushing pump assembly, and the fifth valve port of the second three-way valve is used to connect to the second flushing interface of the medical catheter pump.

14. The consumable material according to claim 13, characterized in that: The consumables also include: The flushing pipeline forms the first flushing passage and the second flushing passage, the first three-way valve is arranged at the end of the pipe opening corresponding to the first flushing passage, and the second three-way valve is arranged at the end of the pipe opening corresponding to the second flushing passage. or The medical catheter pump comprises: catheter; A drive shaft rotatably disposed in the conduit; A pump head, comprising: a pump housing connected to the distal end of the catheter, and an impeller received in the pump housing; the impeller is connected to the distal end of the drive shaft so as to be driven to rotate and pump blood; A driving catheter handle, comprising: a rotor driven by a driving motor; the proximal end of the driving shaft is connected to the rotor, an inner cavity is formed in the driving catheter handle to rotatably support the rotor; the catheter is connected to the inner cavity, the driving catheter handle is provided with a first flushing interface and a second flushing interface connected to the inner cavity, the first three-way valve is arranged at the first flushing interface, and the second three-way valve is arranged at the second flushing interface; Part of the flushing liquid that enters the inner cavity through the second flushing interface enters the catheter and is completely discharged into the human body at the pump head, and the other part passes through the rotor and is discharged from the first flushing interface.

15. A control device for a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a fifth valve port and a fourth valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path; The device comprises: A control module, used for filling the first flushing passage and the second flushing passage with flushing liquid through the flushing pump assembly during the pre-filling stage, and filling the inner cavity of the medical catheter pump with the flushing liquid through the flushing assembly connected to the sixth valve port of the second three-way valve; The control module is also used to flush the circulating flushing circuit formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump through the flushing pump assembly during the overall flushing stage.

16. A control device for a medical catheter pump system, characterized in that: The medical catheter pump system comprises a medical catheter pump and a flushing pipeline, wherein a first flushing interface of the medical catheter pump is connected to a first flushing path driven by a flushing pump assembly through a valve inner passage between a second valve port and a first valve port of a first three-way valve, and a second flushing interface of the medical catheter pump is connected to a second flushing path driven by the flushing pump assembly through a valve inner passage between a fifth valve port and a fourth valve port of a second three-way valve, and the flushing pipeline forms the first flushing path and the second flushing path; The control device comprises: A control module, used for controlling the flushing pump assembly to fill the first flushing passage and the second flushing passage with flushing liquid during the pre-filling stage; The control module is also used to control the flushing pump assembly to flush the circulating flushing loop formed by the first flushing passage, the second flushing passage and the inner cavity of the medical catheter pump during the overall flushing stage.

17. The control device according to claim 16, characterized in that: The flushing pump assembly includes a flushing pump and a circulation pump; wherein, The flushing pump is arranged at a common portion of the first flushing passage and the second flushing passage at a starting position, and the flushing pump is used to deliver flushing liquid to the inner cavity of the medical catheter pump through the second flushing passage during the overall flushing stage; The circulation pump is arranged in a passage of the second flushing passage that is not shared with the first flushing passage, and the circulation pump is used to control the flushing liquid to circulate and flush the inner cavity of the medical catheter pump during the overall flushing stage.

18. A control device, characterized in that: The control device is used to implement the flushing method for the medical catheter pump system according to any one of claims 3 to 12.

19. A computer storage medium, characterized in that: At least one computer program is stored in the computer storage medium, and the at least one computer program is loaded and executed by the processor to implement the flushing method of the medical catheter pump system according to any one of claims 3 to 12.

20. A chip, characterized in that: The chip includes a programmable logic circuit or a program, and a device equipped with the chip is used to implement the flushing method of the medical catheter pump system according to any one of claims 3 to 12.

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