Flushing fluid stent, pressure detection system, intrusive blood pump and ventricular assist device

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a flushing fluid stent, a pressure detection system, an intrusive blood pump and a ventricular assist device. An artery pressure measuring pipeline inlet connector, an artery pressure measuring pipeline outlet connector, a communication channel, a flushing pipeline connector, a catheter installation connector and a flushing fluid cavity are integrally arranged on a flushing fluid support, and an artery pressure detection hole and a flushing fluid pressure detection hole are further formed in the flushing fluid support. The artery pressure sensor and the flushing fluid pressure sensor are arranged in the flushing fluid support, sensing of artery blood pressure and sensing of flushing fluid pressure are achieved, the difficulty of arranging an artery pressure measuring pipeline inlet connector, an artery pressure measuring pipeline outlet connector and a flushing pipeline connector is lowered, the structure of the driving catheter is simplified, and the driving catheter is more convenient to use. The integration level of the interventional blood pump structure is improved, pressure detection equipment does not need to be additionally intervened in the human body, the wound to the human body is small, the risk of surgical infection is reduced, and the operation steps of the surgery are simplified.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a flushing fluid stent, a pressure detection system, an interventional blood pump, and a ventricular assist device. Background Technology

[0002] A ventricular assist device (VAM) is a mechanical device made of artificial materials that can temporarily or permanently replace the heart's pumping function, reducing the heart's workload and assisting in blood circulation. Currently, VAMs have become an important medical tool for treating heart failure and prolonging life.

[0003] Surgical infection is a common postoperative complication after the intervention or removal of ventricular assist devices (VADs), and its treatment is very difficult. Currently, the use of VADs requires the insertion of an external pressure monitoring device to measure blood pressure. This typically creates two surgical wounds on the patient, increasing the risk of infection and potentially leading to vascular complications. Furthermore, the simultaneous insertion of the VAD and the internal pressure monitoring device complicates the procedure and prolongs the surgery. Summary of the Invention

[0004] The purpose of this invention is to provide a flushing fluid stent, a pressure detection system, an interventional blood pump, and a ventricular assist device, which simplifies the structure of the driving catheter, improves the integration of the interventional blood pump structure, and is simple to operate with minimal trauma to the human body.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] In a first aspect, a flushing fluid stent is provided, the flushing fluid stent being used in an interventional blood pump, the flushing fluid stent being provided with:

[0007] The arterial pressure measuring tubing has an outlet port and an inlet port, wherein the outlet port is used to connect to the pressure measuring port of the interventional sheath;

[0008] A connecting channel, the two ends of which are respectively connected to the inlet interface of the arterial pressure measuring tubing and the outlet interface of the arterial pressure measuring tubing;

[0009] An arterial pressure detection port has one end penetrating through the side wall of the flushing fluid stent and the other end communicating with the communication channel. The arterial pressure detection port is used to connect an arterial pressure sensor.

[0010] Flushing pipe interfaces and conduit installation interfaces;

[0011] A flushing fluid chamber is connected to the flushing pipeline interface, the conduit installation interface, and the driven coupling chamber, which is used to house the rotating assembly.

[0012] The flushing fluid pressure detection hole has one end penetrating through the side wall of the flushing fluid support and the other end communicating with the flushing fluid chamber. The flushing fluid pressure detection hole is used to connect the flushing fluid pressure sensor.

[0013] As an optional technical solution for the aforementioned flushing fluid support, the flushing pipeline interface includes a flushing pipeline inlet interface and a flushing pipeline outlet interface, and the flushing fluid support comprises:

[0014] The flushing stent comprises the arterial pressure measuring tubing inlet port, the arterial pressure measuring tubing outlet port, the arterial pressure detection port, the connecting channel, the flushing tubing inlet port, the catheter installation port, the flushing fluid pressure detection port, and the flushing fluid chamber, all of which are disposed on the flushing stent.

[0015] A coupling bracket is coupled to the flushing bracket, the driven coupling cavity and the flushing pipeline outlet interface are disposed on the coupling bracket, and the flushing pipeline outlet interface is connected to the driven coupling cavity;

[0016] Preferably, the proximal end of the flushing bracket is provided with a connector, and the distal end of the coupling bracket is provided with a connector portion, wherein the connector is inserted into the connector portion along the axial direction of the coupling bracket.

[0017] As an optional technical solution for the aforementioned flushing fluid stent, the flushing stent includes a first stent portion, a second stent portion, and a third stent portion connected sequentially from proximal to distal, with their outer diameters decreasing sequentially. A fourth stent portion is provided at the distal end of the first stent portion. The fourth stent portion extends to the distal end of the third stent portion and is connected to the second stent portion and the third stent portion, respectively. The flushing fluid chamber and the flushing fluid pressure detection port are disposed on the second stent portion, and the flushing fluid chamber penetrates the proximal end face of the first stent portion. The catheter installation interface is disposed on the third stent portion. The flushing tubing interface, the arterial pressure measurement tubing inlet interface, the arterial pressure measurement tubing outlet interface, the arterial pressure detection port, and the connecting channel are respectively disposed on the fourth stent portion.

[0018] As an alternative technical solution for the aforementioned flushing fluid stent, the arterial pressure detection port and the flushing fluid pressure detection port are offset in the direction from distal to proximal.

[0019] As an optional technical solution for the above-mentioned flushing fluid stent, the arterial pressure measuring tubing inlet interface and the arterial pressure detection hole are disposed at the distal end of the fourth stent part and are disposed corresponding to the third stent part;

[0020] The flushing pipeline interface is located at the near end of the fourth support section, and the flushing fluid pressure detection hole is correspondingly provided with the flushing pipeline interface.

[0021] As an optional technical solution for the above-mentioned flushing fluid stent, the fourth stent portion includes a proximal portion and a distal portion. The proximal portion has at least one flushing tubing interface, and the distal portion has at least one arterial pressure measuring tubing inlet interface. The width between the sidewalls of the proximal portion is greater than or equal to the width between the sidewalls of the distal portion, and the diameter of the flushing tubing interface is greater than the diameter of the arterial pressure measuring tubing inlet interface.

[0022] Preferably, the width between the sidewalls of the proximal portion decreases from the proximal end to the distal end.

[0023] As an optional technical solution for the aforementioned flushing fluid stent, an arterial pressure detection positioning part is provided on the outer side of the flushing fluid stent at a position corresponding to the arterial pressure detection port. The arterial pressure detection positioning part is used to position the arterial pressure sensor and forms a accommodating space for the arterial pressure sensor and its connecting wire; and / or

[0024] A flushing fluid pressure detection positioning part is provided on the outer side of the flushing fluid support at a position corresponding to the flushing fluid pressure detection hole. The flushing fluid pressure detection positioning part is used to position the flushing fluid pressure sensor, and the flushing fluid pressure detection positioning part forms a receiving space for the flushing fluid pressure sensor and the flushing fluid pressure sensor connecting wire; and / or

[0025] The flushing fluid support has a first protrusion, one end of the arterial pressure detection port passes through the first protrusion, and the distance between the end face of the first protrusion and the other end of the arterial pressure detection port matches the thickness of the arterial pressure sensor; and / or

[0026] The flushing fluid support is provided with a second protrusion, one end of the flushing fluid pressure detection hole passes through the second protrusion, and the distance between the end face of the second protrusion and the other end of the flushing fluid pressure detection hole matches the thickness of the flushing fluid pressure sensor.

[0027] Preferably, the wall of the flushing fluid pressure detection hole is stepped with a gradually decreasing inner diameter from one end communicating with the outside to the other end; and / or, the wall of the arterial pressure detection hole is stepped with a gradually decreasing inner diameter from one end communicating with the outside to the other end.

[0028] Preferably, the arterial pressure detection and positioning part is provided with a first limiting groove; and / or, the flushing fluid pressure detection and positioning part is provided with a second limiting groove;

[0029] Preferably, the flushing fluid pressure detection and positioning part is disposed on the second protrusion, and the arterial pressure detection and positioning part is disposed on the first protrusion.

[0030] In a second aspect, a pressure detection system is provided, comprising a circuit assembly and a flushing fluid support as described above. The circuit assembly includes a data processing module, an arterial pressure sensor, and a flushing fluid pressure sensor. The arterial pressure sensor and the flushing fluid pressure sensor are electrically connected to the data processing module, respectively. The data processing module is disposed on the outside of the flushing fluid support, the arterial pressure sensor is disposed in the arterial pressure detection port, and the flushing fluid pressure sensor is disposed in the flushing fluid pressure detection port.

[0031] As an optional technical solution for the aforementioned pressure detection system, the data processing module, the arterial pressure measuring tubing inlet interface, and the flushing tubing interface are located on the same side of the flushing fluid support. The outer wall of the flushing fluid support has a first connecting hole, and the data processing module has a second connecting hole, a first through hole, and a second through hole. The second connecting hole allows one end of a connector to pass through and connect to the first connecting hole. The first through hole corresponds to the flushing tubing interface, and the second through hole corresponds to the arterial pressure measuring tubing inlet interface; and / or,

[0032] The flushing fluid support is provided with at least one positioning element, and the data processing module is provided with at least one positioning hole. The positioning hole communicates with the first through hole and / or the second through hole, and the positioning hole is used to insert the positioning element; and / or

[0033] The edge of the data processing module is also provided with a clearance opening corresponding to the flushing pipe interface, and the clearance opening is set in correspondence with the flushing pipe interface.

[0034] As an optional technical solution for the pressure detection system described above, the circuit assembly further includes a connector. A flange is provided at the proximal end of the flushing fluid support, and the connector is located on the proximal side of the flange. The data processing module is located on the distal circumferential sidewall of the flushing fluid support, and the connector and the data processing module are electrically connected via a flexible connector.

[0035] Preferably, the flexible connector has at least two creases from the distal end to the proximal end, the at least two creases including a first crease and a second crease, the height of the first crease being lower than the height of the second crease;

[0036] Preferably, a protective gasket is provided between the flexible connector and the circumferential sidewall of the flushing fluid support, the protective gasket is connected to the flange, and the shape of the protective gasket is adapted to the bending shape of the flexible connector;

[0037] Preferably, the protective gasket has a connecting portion, and the connector's connecting piece passes through the connector and the flange in sequence and connects to the connecting portion.

[0038] As an optional technical solution for the aforementioned pressure detection system, the flushing fluid support is provided with a locking assembly, which includes a locking ring and an elastic element. The locking ring is slidably sleeved on the outside of the flushing fluid support, and the elastic element is sleeved on the outside of the locking ring. One end of the elastic element abuts against the distal end of the locking ring, and the other end of the elastic element abuts against the flange. A protective gasket is provided between the flexible connector and the elastic element.

[0039] Thirdly, an interventional blood pump is provided, comprising a drive catheter handle and a drive catheter, wherein the drive catheter handle includes the pressure detection system described in any one of the above descriptions, and the proximal end of the drive catheter is connected to the catheter mounting interface.

[0040] Fourthly, a ventricular assist device is provided, comprising a drive system and the aforementioned interventional blood pump, wherein the drive system is used to drive the interventional blood pump to operate;

[0041] Preferably, the drive system is detachably connected to the interventional blood pump.

[0042] The beneficial effects of this invention are:

[0043] The flushing fluid stent for interventional blood pumps provided by this invention integrates an arterial pressure monitoring tubing inlet interface, an arterial pressure monitoring tubing outlet interface, a connecting channel, a flushing tubing interface, a catheter installation interface, and a flushing fluid chamber onto the flushing fluid stent. The flushing fluid stent also features an arterial pressure detection port and a flushing fluid pressure detection port, embedding the arterial pressure sensor and the flushing fluid pressure sensor within the flushing fluid stent. This enables the sensing of arterial blood pressure and flushing fluid pressure, reduces the difficulty of setting up the arterial pressure monitoring tubing inlet interface, arterial pressure monitoring tubing outlet interface, and flushing tubing interface, simplifies the structure of the drive catheter, improves the integration of the interventional blood pump structure, eliminates the need for additional interventional pressure detection equipment within the human body, minimizes trauma to the human body, reduces the risk of surgical infection, simplifies surgical procedures, and thus shortens the operation time.

[0044] The pressure detection system provided by this invention integrates an arterial pressure sensor and an irrigation fluid pressure sensor into an irrigation fluid support, enabling the sensing of arterial blood pressure and irrigation fluid pressure. This reduces the difficulty of setting up the inlet and outlet interfaces of the arterial pressure measurement tubing and the irrigation tubing interface, simplifies the structure of the drive catheter, improves the integration of the interventional blood pump structure, eliminates the need for additional interventional pressure detection equipment in the human body, minimizes trauma to the human body, reduces the risk of surgical infection, simplifies the surgical procedure, and thus shortens the operation time. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the ventricular assist device provided in an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the structure of the catheter drive handle, drive system, flushing kit, and arterial pressure measurement kit provided in the embodiments of the present invention;

[0047] Figure 3 This is a schematic diagram of the structure of the fluid support and circuit assembly provided in an embodiment of the present invention;

[0048] Figure 4 This is a cross-sectional view of the fluid support provided in an embodiment of the present invention;

[0049] Figure 5 This is an isometric view of the flushing bracket provided in an embodiment of the present invention;

[0050] Figure 6 This is a first cross-sectional view of the flushing bracket provided in an embodiment of the present invention;

[0051] Figure 7 This is a second cross-sectional view of the flushing bracket provided in an embodiment of the present invention;

[0052] Figure 8This is a top view of the flushing bracket provided in an embodiment of the present invention;

[0053] Figure 9 This is a top view of the circuit components and protective pads provided in an embodiment of the present invention;

[0054] Figure 10 This is an isometric view of the circuit components provided in the embodiments of the present invention;

[0055] Figure 11 This is a schematic diagram of the flushing fluid support and locking assembly provided in an embodiment of the present invention.

[0056] In the picture:

[0057] 1. Fluid flushing support; 2. Circuit assembly; 3. Flange; 4. Locking assembly;

[0058] 11. Flushing stent; 111. First stent section; 112. Second stent section; 113. Third stent section; 114. Fourth stent section; 115. Arterial pressure detection and positioning section; 1151. First limiting groove; 116. Flushing fluid pressure detection and positioning section; 1161. Second limiting groove; 117. First protrusion; 118. Second protrusion; 119. Connector; 12. Coupling stent; 121. Driven coupling cavity; 122. Connector; 13. First connecting hole; 14. Positioning element;

[0059] 21. Data processing module; 211. Second connection hole; 212. First through hole; 213. Second through hole; 214. Positioning hole; 215. Clearance opening; 22. Arterial pressure sensor; 23. Irrigation fluid pressure sensor; 24. Connector; 25. Flexible connector; 26. Protective gasket; 261. Connecting part;

[0060] 41. Locking ring; 42. Elastic element;

[0061] 101. Arterial pressure monitoring tubing inlet interface; 102. Arterial pressure monitoring tubing outlet interface; 103. Arterial pressure detection port; 104. Connecting channel; 105. Flushing tubing inlet interface; 106. Flushing tubing outlet interface; 107. Catheter installation interface; 108. Flushing fluid pressure detection port; 109. Flushing fluid chamber;

[0062] 100. Drive catheter handle; 200. Drive catheter; 300. Drive system; 400. Pump head; 500. Protective tip;

[0063] 1000, Pressure bag; 2000, Flushing kit; 2001, Flushing pump; 2002, Circulation pump; 3000, Arterial pressure measurement kit; 3001, Flushing valve; 4000, Interventional sheath; 5000, Control unit; 6000, Flushing pump drive assembly. Detailed Implementation

[0064] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0067] In this field, "distal," "far side," "front end," and "anterior side" refer to the side furthest from the operator (e.g., a physician) of the catheter device; "proximal," "proximal," "rear end," and "posterior side" refer to the side closest to the operator.

[0068] like Figure 1 As shown, this embodiment provides a ventricular assist device (VAD) for providing mechanical circulatory support to patients with relevant indications. The VAD includes a drive system 300 and an interventional blood pump. The drive system 300 drives the interventional blood pump. The drive system 300 is connected to a control host 5000, allowing the user to monitor the system status and patient physiological parameters on the control host 5000's interface. Based on the patient's needs, the user can adjust the speed of the interventional pump to provide different levels of circulatory support, thereby temporarily maintaining blood circulation to the patient's vital organs and relieving the burden on the heart.

[0069] Optionally, the drive system 300 is detachably connected to the interventional blood pump, allowing the drive system 300 to be reused, reducing the cost of consumables and thus reducing the cost of surgery.

[0070] Combination Figures 1 to 5 As shown, the interventional blood pump includes a drive catheter handle 100 and a drive catheter 200. The drive catheter handle 100 is provided with a catheter mounting interface 107, and the proximal end of the drive catheter 200 is connected to the catheter mounting interface 107. The distal end of the drive catheter 200 is connected to a pump head 400 and a protective tip 500. The pump head 400 includes structures such as an impeller, a support, and a diaphragm.

[0071] The distal end of the interventional blood pump can be percutaneously inserted into the heart via a peripheral blood vessel. The pump head 400 is placed between the left ventricle and the aorta. The blood inlet of the pump head 400 is placed into the left ventricle, and the blood outlet is placed into the aorta. The drive system 300 drives the impeller in the pump head 400 to rotate, thereby pumping blood from the left ventricle into the ascending aorta, realizing ventricular assist function. The rotation speed of the impeller can be set by rotating a knob on the control panel of the main control unit 5000. During operation, if any high-risk situation occurs, the drive system 300 will send an alarm signal to the control panel.

[0072] When an interventional blood pump is inserted into the human body, a delivery system is required. This system mainly includes a dilator, an interventional sheath 4000, and a delivery device. The delivery system dilates blood vessels and provides a pathway for the distal end of the interventional blood pump to be placed into the heart. The delivery device and the interventional sheath 4000 function to retract the pump head 400. The delivery device and dilator are removed after the distal end of the interventional blood pump is in place. The interventional sheath 4000 remains in the patient's blood vessels until the interventional blood pump is removed. Even after removal, the interventional sheath 4000 continues to retract the pump head 400.

[0073] The interventional blood pump is also connected to a flushing tubing assembly, which includes a flushing kit 2000 and an arterial pressure monitoring kit 3000. The control unit 5000 also includes a flushing pump drive assembly 6000, which drives a flushing pump 2001 on the flushing tubing of the flushing kit 2000. The flushing pump 2001 delivers and controls the flushing fluid by squeezing the flushing tubing, pumping the flushing fluid into the interventional blood pump to prevent blood from entering the drive catheter 200 and causing thrombosis. A pressure bag 1000 applies pressure to the arterial pressure monitoring kit 3000, and the flushing valve 3001 is periodically opened to flush the arterial pressure monitoring pathway with saline solution, preventing thrombosis.

[0074] The flushing kit 2000 also includes a circulation pump 2002 on its tubing. A portion of the flushing fluid entering the interventional blood pump flows to the drive catheter 200. The drive catheter handle 100 contains a rotating component and a flushing fluid circulation channel. The rotating component is coupled to the drive system 300 to drive the pump head 400 to rotate. The remaining flushing fluid flows into the flushing fluid circulation channel to lubricate and cool the rotating component. The control unit 5000 can also control the circulation pump 2002 to circulate the flushing fluid entering the flushing fluid circulation channel.

[0075] After the aforementioned drive catheter handle 100 and flushing tubing are connected, a flushing channel will be formed. The drive catheter handle 100 includes a flushing tubing inlet interface 105, a flushing tubing outlet interface 106, an arterial pressure measurement tubing inlet interface 101, and an arterial pressure measurement tubing outlet interface 102.

[0076] The flushing tubing inlet 105 and flushing tubing outlet 106 are respectively connected to the flushing tubing in the flushing kit 2000. The arterial pressure measurement tubing inlet 101 is connected to the arterial pressure measurement tube of the arterial pressure measurement kit 3000. The flushing fluid is connected to the pressure measurement interface of the interventional sheath 4000 via the arterial pressure measurement tubing outlet 102. The gap between the interventional sheath 4000 and the driving catheter 200 communicates with the arterial pressure measurement tube to form an arterial pressure measurement pathway.

[0077] The control console of the 5000 provides users with a simple and intuitive operating interface, which can perform the following functions: monitor the operating status of the transcatheter ventricular assist device; display the system operating status and patient physiological data, including speed, blood pressure and flow rate; control the speed of the impeller of the pump head 400, the flushing pump 2001 and the circulation pump 2002; support the setting of alarm thresholds and system parameters; the console provides different levels of alarms and automatically records various alarm information, and relevant charts will be displayed in the summary report.

[0078] like Figure 3 and Figure 4 As shown, the drive catheter handle includes a pressure detection system, which includes a circuit assembly 2 and an irrigation fluid support 1. The irrigation fluid support 1 is used in an interventional blood pump. The circuit assembly 2 includes a data processing module 21, an arterial pressure sensor 22, and an irrigation fluid pressure sensor 23. The arterial pressure sensor 22 and the irrigation fluid pressure sensor 23 are electrically connected to the data processing module 21, which is located on the outside of the irrigation fluid support 1.

[0079] The flushing fluid stent 1 is equipped with an arterial pressure measurement tubing outlet interface 102, an arterial pressure measurement tubing inlet interface 101, a connecting channel 104, and an arterial pressure detection port 103. The arterial pressure measurement tubing outlet interface 102 is used to connect to the pressure measurement interface of the interventional sheath 400. The two ends of the connecting channel 104 are respectively connected to the arterial pressure measurement tubing inlet interface 101 and the arterial pressure measurement tubing outlet interface 102. The arterial pressure measurement tubing inlet interface 101 is used to connect to the arterial pressure measurement tubing of the arterial pressure measurement kit 3000. One end of the arterial pressure detection port 103 penetrates the side wall of the flushing fluid stent 1, and the other end connects to the connecting channel 104. The arterial pressure detection port 103 is used to connect to the arterial pressure sensor 22.

[0080] The flushing fluid support 1 is also equipped with a flushing pipeline interface, a conduit mounting interface 107, a flushing fluid chamber 109, and a flushing fluid pressure detection hole 108. The flushing fluid chamber 109 is connected to the flushing pipeline interface, the conduit mounting interface 107, and the driven coupling cavity 121, which is used to house the rotating component. One end of the flushing fluid pressure detection hole 108 penetrates the side wall of the flushing fluid support 1, and the other end is connected to the flushing fluid chamber 109. The flushing fluid pressure detection hole 108 is used to connect the flushing fluid pressure sensor 23.

[0081] The arterial pressure sensor 22 is disposed in the arterial pressure detection hole 103, and the flushing fluid pressure sensor 23 is disposed in the flushing fluid pressure detection hole 108.

[0082] Optionally, the inner diameter of the driven coupling cavity 121 can be the same as the inner diameter of the flushing fluid cavity 109 to improve the flow of the flushing fluid in the driven coupling cavity 121, thereby improving the cooling effect on the rotating component. The diameter of the flushing fluid cavity 109 is larger than the diameter of the conduit mounting interface 107, and the diameter at the conduit mounting interface 107 is smaller, resulting in greater resistance. Part of the flushing fluid entering the flushing fluid cavity 109 flows into the conduit mounting interface, while part flows into the driven coupling cavity 121.

[0083] The technical solution provided in this embodiment integrates the arterial pressure measurement tubing inlet interface 101, arterial pressure measurement tubing outlet interface 102, connecting channel 104, flushing tubing interface, catheter installation interface 107, and flushing fluid chamber 109 onto a single flushing fluid support 1. This forms two flow channels on the single flushing fluid support 1: one is the arterial pressure measurement channel formed by connecting the arterial pressure measurement tubing inlet interface 101, connecting channel 104, and arterial pressure measurement tubing outlet interface 102; the other is the interventional pump flushing channel formed by connecting the flushing tubing interface, flushing fluid chamber 109, and catheter installation interface 107. Thus, there is no need to set up two separate fluid supports inside the interventional pump to realize arterial pressure measurement and flushing functions, simplifying the complexity of the internal structure of the interventional pump. Furthermore, the flushing fluid stent 1 is equipped with an arterial pressure detection port 103 and a flushing fluid pressure detection port 108. By embedding the arterial pressure sensor 22 and the flushing fluid pressure sensor 23 into the arterial pressure detection port 103 and the flushing fluid pressure detection port 108 respectively, both arterial blood pressure and flushing fluid pressure can be simultaneously sensed. This reduces the difficulty of setting up the arterial pressure measurement tubing inlet interface 101, arterial pressure measurement tubing outlet interface 102, and flushing tubing interface, simplifies the structure of the drive catheter 200, and improves the integration of the interventional blood pump structure. Moreover, during use, after the interventional pump is inserted into the body, the pressure measurement interface of the interventional sheath is directly connected to the arterial pressure measurement tubing outlet interface 102. The arterial pressure sensor 22 can then detect arterial blood pressure through the communication channel between the interventional sheath and the flushing fluid stent 1. This eliminates the need for additional pressure detection equipment to be inserted into the body, resulting in less trauma to the human body, reducing the risk of surgical infection, simplifying the surgical procedure, and shortening the operation time.

[0084] In some embodiments, such as Figure 4 , Figure 5 and Figure 11 As shown, the flushing pipeline interface includes a flushing pipeline inlet interface 105 and a flushing pipeline outlet interface 106. The flushing fluid support 1 includes a flushing support 11 and a coupling support 12, which are coupled to the flushing support 11. Optionally, the flushing support 11 has a plug-in 119 at its proximal end and a plug-in portion 122 at its distal end. The plug-in 119 is inserted into the plug-in portion 122 along the axial direction of the coupling support 12, which not only connects the flushing support 11 and the coupling support 12 but also restricts their relative rotation in the circumferential direction. Further optionally, the plug-in 119 includes at least two plug-in blocks, which are spaced apart circumferentially along the proximal end of the flushing support 11. The plug-in portion 122 includes a plug-in groove corresponding to the plug-in block, and the plug-in block can be inserted into the plug-in groove.

[0085] The arterial pressure monitoring tubing inlet interface 101, arterial pressure monitoring tubing outlet interface 102, arterial pressure detection port 103, connecting channel 104, flushing tubing inlet interface 105, catheter installation interface 107, flushing fluid pressure detection port 108, and flushing fluid chamber 109 are all disposed on the flushing support 11. The driven coupling chamber 121 and the flushing tubing outlet interface 106 are disposed on the coupling support 12, and the flushing tubing outlet interface 106 is connected to the driven coupling chamber 121. The flushing fluid enters the flushing fluid chamber 109 through the flushing tubing inlet interface 105, and then part of the flushing fluid flows into the driving catheter 200 through the catheter installation interface 107, while the other part of the flushing fluid enters the driven coupling chamber 121 and is discharged through the flushing tubing outlet interface 106. The flushing fluid support 1 is designed as a split structure, which facilitates the processing of each interface and the arterial pressure detection port 103 and flushing fluid pressure detection port 108, and reduces processing costs. It also facilitates the installation of related components within the flushing fluid support, such as the rotating component installed in the driven coupling cavity 121. The rotating component only needs to be installed through the opening on the side of the driven coupling cavity 121 closest to the flushing fluid cavity 109 into the driven coupling cavity 121. It also facilitates the installation of the limiting seal of the rotating component between the driven coupling cavity 121 and the flushing fluid cavity, eliminating the need for complex installation processes and improving assembly efficiency.

[0086] The flushing fluid holder can also be an integrated structure, as long as mounting holes for the internal components to pass through and / or a cover for sealing are provided on one side.

[0087] Optionally, refer to Figure 4 and Figure 5 As shown, the flushing support 11 includes a first support portion 111, a second support portion 112, and a third support portion 113 connected sequentially from proximal to distal, with their outer diameters decreasing sequentially. Preferably, the first support portion 111, the second support portion 112, and the third support portion 113 are coaxially arranged. The flushing support 11 is disposed within the drive catheter handle 100 on the side near the distal end. To facilitate gripping during intervention, the distal end of the drive catheter handle 100 is approximately spherical, with its outer diameter decreasing sequentially from proximal to distal. The design of the first support portion 111, the second support portion 112, and the third support portion 113 connected sequentially from proximal to distal with their outer diameters decreasing sequentially can effectively match the spherical surface of the distal end of the drive catheter handle 100 and reduce the size of the drive catheter handle 100, making it easier for the operator to grip.

[0088] The first support portion 111 has a fourth support portion 114 at its distal end. The fourth support portion 114 extends to the distal end of the third support portion 113 and is connected to the second support portion 112 and the third support portion 113 respectively.

[0089] The catheter installation interface 107 is located on the third stent section 113, and the flushing pipeline interface, the arterial pressure measuring pipeline inlet interface 101, the arterial pressure measuring pipeline outlet interface 102, the arterial pressure detection hole 103, and the connecting channel 104 are respectively located on the fourth stent section 114.

[0090] Optionally, a second support portion 112 is provided on the distal end face of the first support portion 111, and the remaining portion of the distal end face of the first support portion 111 is approximately an annular end face region. The proximal end of the fourth support portion 114 is located in the annular end face region, and the fourth support portion 114 is located above the second support portion 112 and the third support portion 113, that is, on the side near the top of the drive catheter handle 100. The bottom surface of the fourth support portion is connected to the outer peripheral sidewalls of the second support portion 112 and the third support portion 113, respectively. This allows the flushing tubing interface, the arterial pressure measuring tubing inlet interface 101, the arterial pressure measuring tubing outlet interface 102, and other interfaces to be located on the upper end face of the drive catheter handle 100, facilitating the connection of fluid lines to these interfaces when the drive catheter handle 100 is placed on the operating table.

[0091] The flushing fluid chamber 109 and the flushing fluid pressure detection hole 108 are disposed on the second support portion 112, and the flushing fluid chamber 109 penetrates the proximal end face of the first support portion 111. Optionally, the flushing fluid chamber 109 is disposed inside the second support portion 112, and the flushing fluid pressure detection hole 108 is disposed through the outer peripheral sidewall of the second support portion 112.

[0092] The flushing fluid chamber 109 and the connecting channel 104 are respectively located at different positions on the flushing bracket 11, so that the channel for sensing the flushing fluid pressure and the fluid channel for sensing the arterial pressure are misaligned, thereby making the arterial pressure detection port 103 and the flushing fluid pressure detection port 108 misaligned, so that they will not affect each other when connecting to external pipelines or during pressure measurement.

[0093] Optionally, the arterial pressure detection port 103 and the irrigation fluid pressure detection port 108 are offset from distal to proximal. The arterial pressure detection port 103 is located in the fourth support portion 114, and the irrigation fluid pressure detection port 108 is located in the second support portion 112. Since the fourth support portion 114 is located on the outer peripheral sidewall of the second support portion 112, and the fourth support portion 114 is located above the second support portion 112 in the vertical direction when the drive catheter handle 100 is placed horizontally, the arterial pressure sensor 22 and the irrigation fluid pressure sensor 23 are offset in the radial direction, or in other words, they have a height difference in the vertical direction. Meanwhile, the arterial pressure detection port 103 and the irrigation fluid pressure detection port 108 are still staggered in the axial direction from distal to proximal. This allows the arterial pressure sensor 22 and the irrigation fluid pressure sensor 23 to be located in different areas. With this design, the connecting lines of the arterial pressure sensor 22 and the irrigation fluid pressure sensor 23 do not overlap, resulting in clear and aesthetically pleasing wiring, and facilitating the installation of the arterial pressure sensor 22 and the irrigation fluid pressure sensor 23. Figure 3 As shown.

[0094] Optionally, the arterial pressure measurement tubing inlet 101 and the arterial pressure detection port 103 are located at the distal end of the fourth stent portion 114 and correspond to the third stent portion 113. The arterial pressure measurement structure is located at the distal end of the flushing stent 11, i.e., close to the interventional sheath 4000, facilitating connection with the pressure measurement interface of the interventional sheath 4000. The flushing tubing interface is located at the proximal end of the fourth stent portion 114, and the flushing fluid pressure detection port 108 corresponds to the flushing tubing interface. The flushing structure and the arterial pressure measurement structure are offset, ensuring no mutual interference during connection to external tubing or pressure measurement. Preferably, the flushing tubing inlet 105 is located on the fourth stent portion 114, and the flushing tubing outlet 106 is located on the coupling stent 12.

[0095] Optionally, the fourth stent portion 114 includes a proximal portion and a distal portion. The proximal portion has at least one flushing tubing interface, and the distal portion has at least one arterial pressure measurement tubing inlet interface 101. The width between the sidewalls of the proximal portion is greater than that of the distal portion, and the diameter of the flushing tubing interface is greater than the diameter of the arterial pressure measurement tubing inlet interface 101. On the one hand, the amount of flushing fluid entering the flushing fluid chamber 109 is greater than the amount of flushing fluid entering the arterial pressure detection communication channel 104 and needs to circulate; on the other hand, since the flushing fluid in the arterial pressure measurement channel only serves to maintain communication with the blood in the blood vessel to measure blood pressure, its channel size should not be set too large, thereby preventing coagulation and blood backflow, and does not need to circulate. Therefore, the diameter of the flushing tubing interface is larger than the diameter of the arterial pressure measurement tubing inlet interface 101. Both the flushing tubing interface and the arterial pressure monitoring tubing interface need to be located in the fourth stent section 114. Therefore, the fourth stent section has different sidewall widths at its proximal and distal ends. The sidewall width of the proximal portion needs to be larger than the size of the flushing tubing interface. Since the distal portion is located at the distal spherical part of the drive catheter handle in the axial direction, the sidewall width needs to be reduced to accommodate the internal space of the distal spherical part of the drive catheter handle, but the sidewall width still needs to be larger than the size of the arterial pressure monitoring tubing inlet interface. In addition, to facilitate the fabrication of the flushing tubing interface and improve the internal structural compactness of the interventional blood pump, the fourth stent section 114 is designed with a structure where the widths differ from the proximal to the distal portion. This satisfies the requirements and reduces the volume of the flushing stent, thereby reducing the volume of the drive catheter handle.

[0096] Preferably, the width between the sidewalls of the proximal portion of the fourth stent portion 114 decreases from the proximal end to the distal end. This not only meets the requirements for processing the flushing tubing interface but also further reduces the volume of the flushing stent 11, improving the internal structural compactness of the interventional blood pump. A flushing tubing inlet interface 105 is provided on the fourth stent portion 114, and the diameter of the flushing tubing inlet interface 105 is at least larger than the diameter of the arterial pressure monitoring tubing inlet interface 101. The diameter of the arterial pressure monitoring tubing inlet interface 101 and the diameter of the arterial pressure monitoring tubing outlet interface 102 can be the same, and the diameter of the flushing tubing inlet interface 105 and the diameter of the flushing tubing outlet interface 106 can be the same.

[0097] The fourth support portion 114 has a flat rectangular structure, which allows the outer shell of the drive catheter handle 100 to have an arc-shaped surface that is easy to grip. The flushing fluid chamber 109 is disposed on the second support portion 112. Since the inner diameter of the flushing fluid chamber 109 is relatively large, the second support portion 112 has a cylindrical structure. The catheter mounting interface 107 is disposed on the third support portion 113. Since the catheter mounting interface 107 has a circular structure, the third support portion 113 is set as a cylindrical structure to facilitate the processing of the catheter mounting interface 107.

[0098] Combination Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, an arterial pressure detection positioning part 115 is provided on the outer side of the flushing fluid support 1 at a position corresponding to the arterial pressure detection port 103. The arterial pressure detection positioning part 115 is used to position the arterial pressure sensor 22. The arterial pressure detection positioning part 115 forms a receiving space for the arterial pressure sensor 22 and the arterial pressure sensor connecting wire, which facilitates the installation and fixation of the arterial pressure sensor 22. The aforementioned receiving space can be used for potting glue to fix the pressure sensor.

[0099] Optionally, the arterial pressure detection positioning unit 115 includes an arterial pressure detection positioning frame. The arterial pressure detection positioning frame surrounds the arterial pressure detection hole 103 and has an opening on one side. This opening can be used to accommodate the sensor connection wire. The arterial pressure detection positioning frame and the flushing fluid support 1 form a receiving space to facilitate glue injection and sealing after the sensor is installed into the detection hole, so as to withstand a large fluid pressure. Based on the structure of the flushing fluid support 1 and the position of the arterial pressure detection hole 103, the arterial pressure detection positioning unit 115 is disposed on the fourth support unit 114. The structure of the third support unit 113 serves to avoid the placement of the arterial pressure detection positioning unit 115.

[0100] Optionally, the arterial pressure detection positioning part 115 is provided with a first limiting groove 1151. The first limiting groove 1151 is used to accommodate adhesive, so as to better fix the arterial pressure sensor 22 in the accommodating space and improve the firmness of the adhesive fixation. According to the specific structure of the arterial pressure detection positioning part 115 described above, the first limiting groove 1151 is provided on the inner sidewall of the arterial pressure detection positioning frame and is arranged around the circumference of the arterial pressure detection positioning frame. After the arterial pressure sensor connecting wire is placed in the accommodating space, the first limiting groove 1151 is located outside the connecting wire. In this way, during adhesive fixation, not only can the amount of adhesive be increased, but the adhesive can also fill the groove to form a limiting structure, thereby improving the stability of fixing the arterial pressure sensor 22.

[0101] In some embodiments, the flushing fluid support 1 is provided with a first protrusion 117, one end of the arterial pressure detection hole 103 passes through the first protrusion 118, and the distance between the end face of the first protrusion 117 and the other end of the arterial pressure detection hole 103 matches the thickness of the arterial pressure sensor 22. The first protrusion 117 can be provided on the fourth support portion, but the size of the fourth support portion is small, and the thickness between the side wall and the internal communicating channel is insufficient to firmly install the pressure sensor. The provision of the above-mentioned independent protrusion can increase the installation space and depth of the pressure sensor, so that the outer peripheral side wall of the pressure sensor is completely surrounded by the detection hole, thereby providing support for the entire arterial pressure sensor 22, improving the stability of the arterial pressure sensor 22 fixation, and thus improving the accuracy of the detection data of the arterial pressure sensor 22.

[0102] Optionally, such as Figure 6 As shown, the wall of the arterial fluid pressure detection hole 103 is stepped with a gradually decreasing inner diameter from one end connected to the outside to the other end, which increases the contact and fixing surface between the wall of the arterial fluid pressure detection hole 103 and the pressure sensor, thereby increasing the adhesive area and thus improving the stability of fixing the arterial pressure sensor 22.

[0103] Furthermore, the arterial pressure detection positioning part 115 is disposed on the first protrusion 117. When the arterial pressure sensor 22 is installed in the arterial pressure detection hole 103, the arterial pressure sensor connection line can be directly connected to the data processing module 21 under the guidance of the arterial pressure detection positioning part, which simplifies the routing path of the arterial pressure sensor connection line.

[0104] Combination Figure 3 , Figure 5 and Figure 7 As shown, in some embodiments, a flushing fluid pressure detection positioning part 116 is provided on the outer side of the flushing fluid support 1 at a position corresponding to the flushing fluid pressure detection hole 108. The flushing fluid pressure detection positioning part 116 is used to position the flushing fluid pressure sensor 23. The flushing fluid pressure detection positioning part 116 forms a receiving space for the flushing fluid pressure sensor 23 and the flushing fluid pressure sensor connecting wire, which facilitates the installation and fixing of the flushing fluid pressure sensor 23. The aforementioned receiving space can be used for potting glue to fix the pressure sensor.

[0105] Optionally, the flushing fluid pressure detection and positioning part 116 includes a flushing fluid pressure detection and positioning frame. The flushing fluid pressure detection and positioning frame is arranged around the flushing fluid pressure detection hole 108 and has an opening on one side. This opening can be used to accommodate the sensor connection wire. The flushing fluid pressure detection and positioning frame and the flushing fluid support 1 form an accommodating space to facilitate glue injection and sealing after the sensor is installed into the detection hole, so as to withstand a large flushing pressure (the intervention pump needs to be pre-charged and vented before use, and the internal flow channel of the drive conduit is narrow and long with high resistance, so the flushing pressure will be very high). According to the structure of the flushing fluid support 1 and the position of the flushing fluid pressure detection hole 108, the flushing fluid pressure detection and positioning part 116 is arranged on the second support part 112.

[0106] Optionally, the flushing fluid pressure detection and positioning part 116 is provided with a second limiting groove 1161. The second limiting groove 1161 is used to accommodate adhesive, so as to better fix the flushing fluid pressure sensor 23 in the accommodating space and improve the firmness of the adhesive fixation. According to the specific structure of the flushing fluid pressure detection and positioning part 116 described above, the second limiting groove 1161 is provided on the inner side wall of the flushing fluid pressure detection and positioning frame and is arranged around the circumference of the flushing fluid pressure detection and positioning frame. After the flushing fluid pressure sensor connecting wire is placed in the accommodating space, the second limiting groove 1161 is located outside the connecting wire. In this way, during adhesive fixation, not only can the amount of adhesive be increased, but the adhesive can also fill the groove to form a limiting structure, thereby improving the stability of fixing the flushing fluid pressure sensor 23.

[0107] In some embodiments, the flushing fluid support 1 is provided with a second protrusion 118, one end of the flushing fluid pressure detection hole 108 passes through the second protrusion 118, and the distance between the end face of the second protrusion 117 and the other end of the flushing fluid pressure detection hole 108 matches the thickness of the flushing fluid pressure sensor 23. The second protrusion 118 can be provided on the second support portion. The flushing fluid cavity inside the second support portion is large, resulting in insufficient thickness between the outer sidewall of the second support portion and the inner flushing fluid cavity to firmly install the pressure sensor. The provision of the above-mentioned independent protrusion can increase the installation space and depth of the pressure sensor, thereby allowing the outer peripheral sidewall of the pressure sensor to be completely surrounded by the detection hole, thus providing support for the entire flushing fluid pressure sensor 23, improving the stability of the flushing fluid pressure sensor 23, and thus improving the accuracy of the detection data of the flushing fluid pressure sensor 23. Optionally, as Figure 7 As shown, the wall of the flushing fluid pressure detection hole 108 is stepped with a gradually decreasing inner diameter from one end connected to the outside to the other end, which increases the amount of glue poured into the flushing fluid pressure detection hole 108, thereby improving the stability of fixing the flushing fluid pressure sensor 23.

[0108] Furthermore, the flushing fluid pressure detection and positioning part 116 is disposed on the second protrusion 118. When the flushing fluid pressure sensor 23 is installed in the flushing fluid pressure detection hole 108, the flushing fluid pressure sensor connection line can be directly connected to the data processing module 21 under the guidance of the flushing fluid pressure detection and positioning part, which simplifies the wiring path of the flushing fluid pressure sensor connection line.

[0109] Continue to refer to Figure 3 and Figure 5 As shown, the data processing module 21, the arterial pressure measurement tubing inlet interface 101, and the flushing tubing interface are located on the same side of the flushing fluid stent 1, such as the side away from the bottom of the drive catheter handle. Figure 5 , Figure 8 and Figure 9 As shown, the outer wall of the flushing fluid support 1 is provided with a first connecting hole 13. Optionally, the first connecting hole 13 is provided on the fourth support portion 114. The data processing module 21 is provided with a second connecting hole 211, a first through hole 212, and a second through hole 213. The second connecting hole 211 allows one end of the connector to pass through and connect to the first connecting hole 13 to fix the data processing module 21 on the flushing fluid support. The first through hole 212 is provided corresponding to the flushing pipeline interface to allow the flushing pipeline to pass through and be inserted into the flushing pipeline interface. The second through hole 213 is provided corresponding to the arterial pressure measurement pipeline inlet interface 101 to allow the arterial pressure measurement pipeline to pass through and be inserted into the arterial pressure measurement pipeline inlet interface 101. By providing the above-mentioned connecting holes and through holes, the data processing module 21 can be fixedly connected to the flushing fluid support and the flushing pipeline can pass through, reducing the internal space of the interventional pump and improving the integration of the system structure.

[0110] Optionally, the flushing fluid support 1 is provided with at least one positioning element 14, which is optionally disposed on the fourth support portion 114. The data processing module 21 is provided with at least one positioning hole 214, which communicates with the first through hole 212 and / or the second through hole 213. The positioning hole 214 is used to insert the positioning element 14 to prevent the data processing module 21 from rotating relative to the flushing fluid support 1. Specifically, there can be two positioning elements 14, respectively on both sides of the first connecting hole 13, thereby limiting the displacement of the data processing module 21 relative to the first connecting hole 13.

[0111] The edge of the data processing module 21 is also provided with a clearance opening 215 corresponding to the flushing pipe interface. The clearance opening 215 is set corresponding to the flushing pipe interface. The flushing pipe interface includes a flushing pipe inlet interface 105 and a flushing pipe outlet interface 106. The first through hole 212 is used for the flushing pipe to pass through and be inserted into the flushing pipe inlet interface 105. The clearance opening 215 is used to avoid the flushing pipe from being inserted into the flushing pipe outlet interface 106, thereby reducing the pressure between the flushing pipe and the circuit board and preventing the flushing pipe from deforming and loosening.

[0112] Optionally, the radial width of the circuit board of the data processing module 21 gradually decreases from the proximal end to the distal end, thereby adapting to the arc-shaped gripping surface of the drive conduit handle 100 and reducing the volume of the drive conduit handle 100.

[0113] like Figure 3 , Figure 9 and Figure 10 As shown, in some embodiments, the circuit assembly 2 further includes a connector 24. A flange 3 is provided near the proximal end of the flushing fluid support 1, and the connector 24 is disposed near the flange 3. The data processing module 21 is disposed on the distal circumferential sidewall of the flushing fluid support 1. The connector 24 and the data processing module 21 are electrically connected via a flexible connector 25. The connector 24 is used for electrical connection with the drive system 300. The flexible connector 25 is flexible, and connecting the connector 24 and the data processing module 21 via the flexible connector 25 facilitates positioning and assembly of the connector 24 and the data processing module 21. Furthermore, it improves the stability between the connector 24 and the data processing module 21, resisting the adverse effects of rigid deformation on the connection lines.

[0114] Optionally, the flexible connector 25 has at least two creases from its distal end to its proximal end. These creases include a first crease and a second crease. Since the data processing module 21 is positioned below the connector 24, the height of the first crease is lower than the height of the second crease. This bending configuration of the flexible connector 25 ensures the stability of the connection between the flexible connector 25 and the connector 24 and the data processing module 21. Axial displacement or force applied to the connector 24 and the data processing module 21 at the bending location ensures a stable connection between the flexible connector 25 and the connector 24 and the data processing module 21.

[0115] Optionally, a protective gasket 26 is provided between the flexible connector 25 and the circumferential sidewall of the flushing fluid support 1. The protective gasket 26 is connected to the flange 3, and its shape is adapted to the shape of the flexible connector 25 to support the flexible connector 25 and extend its service life. Furthermore, the protective gasket 26 also serves to isolate the flexible connector 25 from the flushing fluid support 1, preventing friction between the flushing fluid support 1 and the flexible connector 25 from damaging the flexible connector 25.

[0116] Furthermore, the protective gasket 26 is provided with a connecting portion 261, through which the connector 24 and flange 3 are sequentially connected. Since the flange 3 is thin and lacks a connecting portion for fixing the connector, the connecting portion 261 on the protective gasket provides a connection for the connector 24, thus securely fixing the connector 24 to the flange 3 and also protecting the flexible connector 25. Optionally, the connecting portion 261 has a threaded hole, and the flange 3 has a through hole. Bolts pass through the through hole and are screwed into the threaded hole, thereby fixing the protective gasket 26 to the flange 3.

[0117] like Figure 9 and Figure 11 As shown, the flushing fluid support 1 is equipped with a locking assembly 4, which includes a locking ring 41 and an elastic element 42. The locking ring 41 is slidably fitted onto the outside of the flushing fluid support 1, and the elastic element 42 is fitted onto the outside of the locking ring 41. One end of the elastic element 42 abuts against the distal end of the locking ring 41, and the other end of the elastic element 42 abuts against the flange 3. A protective gasket 26 is provided between the flexible connector 25 and the elastic element 42. The locking ring 41 can slide relative to the flushing fluid support 1, thereby causing the elastic element 42 to extend and retract. The protective gasket 26 isolates the flexible connector 25 and the elastic element 42, preventing the elastic element 42 from scratching the flexible connector 25, extending the service life of the flexible connector 25, and improving the stability between the connector 24 and the data processing module 21. Other structures of the locking assembly 4 are existing technologies and will not be described in detail here.

[0118] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A flush fluid support, characterized in that, The flushing fluid support is applied to an interventional blood pump, and the flushing fluid support (1) is provided with: an arterial pressure measurement pipeline outlet interface (102) and an arterial pressure measurement pipeline inlet interface (101), the arterial pressure measurement pipeline outlet interface (102) being used for connecting with a pressure measurement interface of an interventional sheath; a communication channel (104), two ends of the communication channel (104) being in communication with the arterial pressure measurement pipeline inlet interface (101) and the arterial pressure measurement pipeline outlet interface (102) respectively; an arterial pressure detection hole (103), one end of the arterial pressure detection hole (103) penetrating through a side wall of the flushing fluid support (1), and the other end of the arterial pressure detection hole (103) being in communication with the communication channel (104), the arterial pressure detection hole (103) being used for connecting an arterial pressure sensor (22); a flushing pipeline interface and a catheter mounting interface (107); a flushing liquid cavity (109), the flushing liquid cavity (109) being in communication with the flushing pipeline interface, the catheter mounting interface (107) and a driven coupling cavity (121), the driven coupling cavity (121) being used for placing a rotating assembly; a flushing liquid pressure detection hole (108), one end of the flushing liquid pressure detection hole (108) penetrating through the side wall of the flushing fluid support (1), and the other end of the flushing liquid pressure detection hole (108) being in communication with the flushing liquid cavity (109), the flushing liquid pressure detection hole (108) being used for connecting a flushing liquid pressure sensor (23).

2. The irrigation fluid holder of claim 1, wherein, The flushing pipeline interface comprises a flushing pipeline inlet interface (105) and a flushing pipeline outlet interface (106), and the flushing fluid support (1) comprises: a flushing support (11), the arterial pressure measurement pipeline inlet interface (101), the arterial pressure measurement pipeline outlet interface (102), the arterial pressure detection hole (103), the communication channel (104), the flushing pipeline inlet interface (105), the catheter mounting interface (107), the flushing liquid pressure detection hole (108) and the flushing liquid cavity (109) being arranged on the flushing support (11); a coupling support (12), the coupling support (12) being coupled and connected with the flushing support (11), the driven coupling cavity (121) and the flushing pipeline outlet interface (106) being arranged on the coupling support (12), and the flushing pipeline outlet interface (106) being in communication with the driven coupling cavity (121); Preferably, a plug-in part (119) is arranged at a proximal end of the flushing support (11), a plug-in portion (122) is arranged at a distal end of the coupling support (12), and the plug-in part (119) is plugged into the plug-in portion (122) along an axial direction of the coupling support (12).

3. The irrigation fluid holder of claim 1 or 2, wherein, The flushing support (11) comprises a first support part (111), a second support part (112) and a third support part (113) connected in sequence from proximal end to distal end and decreasing in diameter, a fourth support part (114) is arranged at the distal end of the first support part (111), the fourth support part (114) extends to the distal end of the third support part (113) and is connected with the second support part (112) and the third support part (113) respectively, the flushing liquid cavity (109) and the flushing liquid pressure detection hole (108) are arranged on the second support part (112), the flushing liquid cavity (109) penetrates the proximal end face of the first support part (111), the catheter mounting interface (107) is arranged on the third support part (113), and the flushing pipeline interface, the arterial pressure measurement pipeline inlet interface (101), the arterial pressure measurement pipeline outlet interface (102), the arterial pressure detection hole (103) and the communication channel (104) are arranged on the fourth support part (114) respectively.

4. The irrigation fluid holder of claim 3, wherein, The arterial pressure detection hole (103) and the flushing liquid pressure detection hole (108) are arranged in a staggered manner in the direction from the distal end to the proximal end.

5. The irrigation fluid holder of claim 4, wherein, The arterial pressure measurement pipeline inlet interface (101) and the arterial pressure detection hole (103) are arranged at the distal end of the fourth support part (114) and correspondingly arranged with the third support part (113). The flushing pipeline interface is arranged at the proximal end of the fourth support part (114), and the flushing liquid pressure detection hole (108) is correspondingly arranged with the flushing pipeline interface.

6. The irrigation fluid holder of claim 5, wherein, The fourth support part (114) comprises a proximal end part and a distal end part, the proximal end part is provided with at least the flushing pipeline interface, the distal end part is provided with at least the arterial pressure measurement pipeline inlet interface (101), the width between the side walls of the proximal end part is greater than or equal to the width between the side walls of the distal end part, and the diameter of the flushing pipeline interface is greater than the diameter of the arterial pressure measurement pipeline inlet interface (101). Preferably, the width between the side walls of the proximal end part decreases from the proximal end to the distal end.

7. The irrigation fluid holder of claim 1, wherein, An arterial pressure detection positioning part (115) is arranged at the position corresponding to the arterial pressure detection hole (103) on the outer side of the flushing fluid support (1), the arterial pressure detection positioning part (115) is used for positioning the arterial pressure sensor (22), the arterial pressure detection positioning part (115) forms a containing space for the arterial pressure sensor (22) and the arterial pressure sensor connecting line; and / or The flushing fluid support (1) is provided with a flushing liquid pressure detection positioning portion (116) at a position corresponding to the flushing liquid pressure detection hole (108) on the outside of the flushing fluid support (1), the flushing liquid pressure detection positioning portion (116) is used for positioning the flushing liquid pressure sensor (23), and the flushing liquid pressure detection positioning portion (116) forms a containing space for the flushing liquid pressure sensor (23) and the flushing liquid pressure sensor connecting line; and / or The flushing fluid support (1) is provided with a first protruding portion (117), one end of the arterial pressure detection hole (103) penetrates through the first protruding portion (117), and the distance between the end face of the first protruding portion (117) and the other end of the arterial pressure detection hole (103) matches the thickness of the arterial pressure sensor (22); and / or The flushing fluid support (1) is provided with a second protruding portion (118), one end of the flushing liquid pressure detection hole (108) penetrates through the second protruding portion (118), and the distance between the end face of the second protruding portion (118) and the other end of the flushing liquid pressure detection hole (108) matches the thickness of the flushing liquid pressure sensor (23); Preferably, the hole wall of the flushing liquid pressure detection hole (108) is stepped from one end connected to the outside to the other end, and the inner diameter gradually decreases; and / or, the hole wall of the arterial pressure detection hole (103) is stepped from one end connected to the outside to the other end, and the inner diameter gradually decreases; Preferably, the arterial pressure detection positioning portion (115) is provided with a first limiting groove (1151); and / or, the flushing liquid pressure detection positioning portion (116) is provided with a second limiting groove (1161); Preferably, the flushing liquid pressure detection positioning portion (116) is provided on the second protruding portion (118), and the arterial pressure detection positioning portion (115) is provided on the first protruding portion (117).

8. Pressure detection system, characterized in that The circuit assembly (2) comprises a data processing module (21), an arterial pressure sensor (22) and a flushing liquid pressure sensor (23), the arterial pressure sensor (22) and the flushing liquid pressure sensor (23) are respectively electrically connected with the data processing module (21), the data processing module (21) is arranged on the outside of the flushing fluid support (1), the arterial pressure sensor (22) is arranged in the arterial pressure detection hole (103), and the flushing liquid pressure sensor (23) is arranged in the flushing liquid pressure detection hole (108).

9. The pressure detection system of claim 8, wherein, The data processing module (21), the arterial pressure measuring pipeline inlet interface (101) and the flushing pipeline interface are arranged on the same side of the flushing fluid support (1), a first connecting hole (13) is arranged on the outer side wall of the flushing fluid support (1), a second connecting hole (211), a first penetrating hole (212) and a second penetrating hole (213) are arranged on the data processing module (21), one end of the second connecting hole (211) is penetrated by a connecting member and connected with the first connecting hole (13), the first penetrating hole (212) is arranged corresponding to the flushing pipeline interface, and the second penetrating hole (213) is arranged corresponding to the arterial pressure measuring pipeline inlet interface (101); and / or, At least one positioning member (14) is arranged on the flushing fluid support (1), and at least one positioning hole (214) is arranged on the data processing module (21), the positioning hole (214) is communicated with the first penetrating hole (212) and / or the second penetrating hole (213), and the positioning hole (214) is used for inserting the positioning member (14); and / or, An edge of the data processing module (21) is further provided with an avoiding opening (215) corresponding to the flushing pipeline interface, and the avoiding opening (215) is arranged corresponding to the flushing pipeline interface.

10. The pressure detection system of claim 8, wherein The circuit assembly (2) further comprises a connector (24), a flange (3) is arranged on the proximal end of the flushing fluid support (1), the connector (24) is arranged on the proximal end side of the flange (3), the data processing module (21) is arranged on the distal end circumferential side wall of the flushing fluid support (1), and the connector (24) is electrically connected with the data processing module (21) through a soft connecting member (25); Preferably, the soft connecting member (25) has at least two folds from the distal end to the proximal end, the at least two folds comprise a first fold and a second fold, and the height of the first fold is lower than the height of the second fold; Preferably, a protective pad (26) is arranged between the soft connecting member (25) and the circumferential side wall of the flushing fluid support (1), the protective pad (26) is connected with the flange (3), and the shape of the protective pad (26) is matched with the shape of the bending of the soft connecting member (25); Preferably, the protective pad (26) is provided with a connecting part (261), and the connecting member of the connector (24) is sequentially penetrated through the connector (24) and the flange (3) and connected with the connecting part (261).

11. The pressure detection system of claim 10, wherein The flushing fluid support (1) is provided with a locking assembly (4), the locking assembly (4) comprises a locking ring (41) and an elastic member (42), the locking ring (41) is slidably sleeved on the outer side of the flushing fluid support (1), the elastic member (42) is sleeved on the outer side of the locking ring (41), one end of the elastic member (42) abuts against the distal end of the locking ring (41), the other end of the elastic member (42) abuts against the flange (3), and the protective pad (26) is arranged between the soft connecting member (25) and the elastic member (42).

12. An interventional blood pump, characterized in that The drive catheter handle (100) comprises the pressure detection system according to any one of claims 8-11, and a proximal end of the drive catheter (200) is connected with the catheter mounting interface (107).

13. A ventricular assist device, characterized by The drive system (300) is used for driving the interventional blood pump to work. Preferably, the drive system (300) is detachably connected with the interventional blood pump.

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