390 results about "Blood pump" patented technology

A blood pump-oxygenator system (250A, 250B, 250C) for increasing perfusion and oxygen levels in the body of a patient (P), comprising: a blood inlet (80) and a blood outlet (90) connected to form a circuit operable as a cardiopulmonary bypass system suitable for extracorporeal treatment of the blood of the patient; a first blood pump (11) and a first oxygenator (20), wherein the first blood pump (11) is configured to deliver blood from the patient (P) through the circuit to the blood inflow port (80), through the first oxygenator (20), out of the blood outflow port (90) and back to the patient (P). The system further comprises a second blood pump (13) and a second oxygenator (21), wherein the second blood pump (13) is configured to deliver blood from the patient (P) through the circuit to the blood inflow port (80), through the second oxygenator (20), out of the blood outflow port (90) and back to the patient (P). The circuit comprises a first branch (101) and a second branch (102) arranged in parallel with each other, the first branch (101) accommodating the first blood pump (11) and the first oxygenator (20), and the second branch (102) accommodating the second blood pump (13) and the second oxygenator (21). The system further comprises a pump control unit (290) wherein the first and second blood pumps (11, 13) are configured to be controlled by the pump control unit (290) to increase or decrease the blood flow through the corresponding oxygenator (20, 21) by changing the proportion of the blood flow through the first and second oxygenator (20, 21).

This invention discloses a blood purification device and medical system. The blood purification device includes: a device housing; a blood purifier; a blood tubing assembly, the blood tubing assembly including a first blood tubing connecting a human blood vessel to the inlet of the blood purifier and a second blood tubing connecting the outlet of the blood purifier to the human blood vessel; a power assembly including a blood pump for driving blood flow within the blood tubing assembly, a first replenishment pump for allowing anticoagulant solution to flow into the first blood tubing, and / or a second replenishment pump for allowing calcium solution to flow into the second blood tubing; and a blood component analysis component disposed within the device housing, the blood component analysis component being used to detect collected blood samples. This design facilitates the appropriate adjustment of anticoagulant drugs and calcium ions in the blood purification circuit.

The intravascular blood pump has a rotatable shaft (25) carrying an impeller (34) and a housing (20) having an opening (35) through which the shaft extends, and the impeller is positioned outside the housing. The shaft and housing have surfaces (25A, 33A) forming circumferential slits, the circumferential slits having a slit width of not more than 2 μm over at least a portion of the slit length, and at least one of the surfaces forming the slits is made of a material having a thermal conductivity of at least 100 W / mK, specifically a ceramic material, such as SiC.

The utility model discloses a blood extracorporeal circulation device, which belongs to the technical field of blood extracorporeal circulation equipment and comprises an inner tube and an outer tube, the inner tube and the outer tube are integrally nested, one end of the outer tube is connected with an air inlet tube, the air inlet tube is communicated with oxygen inlet equipment, and the other end of the outer tube is connected with an air outlet tube. A temperature changer and a flow speed controller are connected between one end, far away from the air outlet end, of the outer pipe and the oxygen inlet equipment; one end of the inner tube is a liquid inlet end for transporting blood, the other end of a blood inlet of the inner tube is a liquid outlet end, and the liquid outlet end is connected with a temperature sensor, an oxygen saturation sensor, a blood pump and a microembolus filter; the part, in the outer pipe, of the inner pipe is made of a gas exchange membrane material, and the liquid inlet end of the inner pipe is opposite to the gas inlet pipe of the outer pipe. The blood temperature rising process is safer, meanwhile, in the blood temperature rising process, the oxygen saturation index in the blood can be directly adjusted, the blood oxygen value is simple, convenient and controllable on the basis of convenient temperature rising, temperature control and oxygen saturation of in-vitro blood circulation are carried out at the same time, and operation is easy and safe.

A percutaneous circulation support device includes a percutaneous blood pump coupled to a distal end region of an elongate shaft at a junction. The percutaneous blood pump is configured to pump blood through a housing of the percutaneous blood pump during use. The joint includes an end cap at the proximal end of the percutaneous blood pump that surrounds and is secured to the distal end region of the elongate shaft at the joint. The joint may include a wrap filler that surrounds and extends proximally from a proximal end region of the end cap, and surrounds an outer surface of the elongate shaft. The proximal end region of the end cap may include an annular sidewall having one or more apertures and / or one or more grooves extending into the annular sidewall, and the cladding filler extending into the apertures and / or the grooves.

The invention relates to an intravascular blood pump comprising a pumping device having a pump portion and a drive portion, wherein the pump portion comprises a pump housing having a primary blood flow inlet and a primary blood flow outlet hydraulically connected by a primary passage, and the drive portion comprises a stator and a rotor rotatable about a rotational axis and configured to rotate a primary impeller configured to convey a primary blood flow along the primary passage from the primary blood flow inlet to the primary blood flow outlet, the drive portion further comprising a secondary blood flow inlet and a secondary blood flow outlet hydraulically connected by a secondary passage extending through an axial gap between the rotor and the stator and a secondary impeller arranged at a drive portion end of the rotor and rotatable about the rotational axis together with the rotor.

A percutaneous circulatory support system may include a blood pump. The blood pump may include an impeller assembly with an impeller housing having a first central axis. The blood pump may include a motor housing having a second central axis. A magnetic assembly may magnetically couple the impeller assembly with the motor assembly. A flexible connector may couple the impeller housing with the motor housing. The magnetic assembly may bias the impeller housing and the motor housing to a first configuration with the first central axis aligned with the second central axis.

Techniques and systems for using spectroscopy, and / or image-based sensing with an intravascular blood pump are provided. The techniques generally include capturing a spectral response to light of a measured tissue and / or blood. Based on the specific needs, the method may include, e.g., determining a type of the measured tissue based on the spectral response, determining if the type of the measured tissue matches a target tissue type, determining a health of the measured tissue based on the spectral response, determining a treatment plan based on the health of the measured tissue, determining a type and / or quantity of components and / or characteristics in the blood, and / or determining a degree of heart recovery based on the type and / or quantity of the components and / or characteristics in the blood.

The invention relates to an intravascular blood pump, a method for manufacturing a magnetic core and a method for manufacturing a blood pump. The blood pump includes: a pump housing having a blood flow inlet and a blood flow outlet; an impeller is disposed in the pump housing to be rotatable about an axis of rotation. The impeller has blades sized and shaped to deliver blood from the blood flow inlet to the blood flow outlet. The blood pump comprises a drive unit for rotating an impeller, the drive unit comprising a magnetic core comprising a plurality of posts arranged about an axis of rotation and a back plate connecting the posts and extending between the posts in an intermediate region. And a coil winding disposed around each of the posts. The material of at least a portion of at least one of the posts is integral with the material of the intermediate region of the back plate. Within each of the columns, one of the sheets of soft magnetic material, or an intermediate layer between two of the sheets of soft magnetic material, is arranged in a plane including the axis of rotation.

A mechanical circulatory support system may include a blood pump, a housing, an elongated shaft, a first sheath, and a second sheath. The blood pump may be configured to pump blood from the ventricles of a patient's heart to the patient's vascular system. The elongated shaft may be coupled to the blood pump and extends proximally from the blood pump to the housing. The first sheath may extend distally from the housing over the elongated shaft and include a cavity having an inner diameter. The second sheath may extend distally from the housing over the elongated shaft and include an outer diameter smaller than the inner diameter of the cavity of the first sheath. The first and second sheaths are configured for longitudinal adjustment along the elongated shaft, and the second sheath is configured to be adjusted via the first sheath.

The present application provides a fixing-locking structure, including an inner cylinder body, a chuck and an outer cylinder body that sleeve a catheter. A first end of the outer cylinder body is provided with a first chamber to accommodate the chuck. A first end of the inner cylinder body is connected to the first end of the outer cylinder body. One end of the chuck abuts against an inner wall of the first end of the inner cylinder body, and the other end of the chuck abuts against an inner wall of the outer cylinder body corresponding to the first chamber. A clamping part is arranged at each of two ends of the chuck, and a compressing-fitting part is formed at a position where each of the inner cylinder body and the outer cylinder body abuts against the clamping part. The compressing-fitting part compresses the clamping part to contract inwards.

The application provides a conduit pump outlet structure and an auxiliary blood circulation device. The conduit pump outlet structure comprises a diffuser arranged in an outlet frame, the outlet frame comprising a fixing ring and at least two struts, the diffuser comprising a hub and at least two guide vanes connected to the hub, the number of the guide vanes being consistent with the number of the struts, the profile edge of the guide vanes comprising a root surface and a tip surface, the root surface being the connecting surface of the guide vanes and the hub, and the tip surface being the outer surface away from the hub; the struts have the same outer profile as the tip surface of the guide vanes; when the diffuser is arranged in the outlet frame, the guide vanes and the struts are arranged one by one, so that the tip surface and the inner wall of the struts are arranged in close contact. By using the application, the resistance of blood output is reduced, and the blood pumping efficiency is improved.

An extracorporeal circulation system (10) is provided with: a holder unit (12) integrally having a holder part (18) to which an artificial lung (100) is attached, and a pump drive part (20) for rotating a blood pump (110); and an input part (67) provided separately from the holder unit (12). The holder unit (12) has a pump control part (52) that controls the pump drive part (20) on the basis of information from a sensor for measuring physical property parameters in the circuit and information from the input part (67).

The invention relates to an intravascular blood pump (1) comprising a pumping device (11) having a pump portion (3) and a drive portion (4), wherein the pump portion (3) comprises a pump housing (2) having a primary blood flow inlet (211) and a primary blood flow outlet (22) hydraulically connected by a primary passage (30) and the drive portion (4) comprises a stator (40) and a rotor (41) rotatable about a rotational axis (10) and configured to rotate a primary impeller (31) configured to convey a primary blood flow along the primary passage (30) from the primary blood flow inlet (211) to the primary blood flow outlet (22), the drive portion (4) further comprises a secondary blood flow inlet (23) and a secondary blood flow outlet (24), the secondary blood flow inlet (23) and the secondary blood flow outlet (24) are hydraulically connected by a secondary passage extending through an axial gap (401) between the rotor (41) and the stator (40) and a secondary impeller (42) arranged at a drive portion end (DSE) of the rotor (41) and rotatable about the rotational axis (10) together with the rotor (41), the secondary impeller (42) comprises one or more secondary impeller blades (421) configured to convey a secondary blood flow along the secondary passage from the secondary blood flow inlet (23) to the secondary blood flow outlet (24) in a direction towards a pump portion end (PSE) of the pumping device (11), the rotor (41) is mounted in a blood cleaning radial slide bearing (47) having an inner rotor bearing surface (4211) and an outer rotor bearing surface (4311), and the secondary impeller (42) forms the inner rotor bearing surface (4211) of the radial slide bearing (47).

An intravascular blood pump can be provided, comprising a catheter and a miniaturized solid-state pump unit coupled to a distal end of the catheter. The pump unit can include an electric motor with a stator and a rotor functionally coupled to the stator, a rigid drive shaft located within the pump unit, the drive shaft being functionally coupled to the rotor, and an impeller housing containing an expandable impeller, the expandable impeller being coupled to the drive shaft.

This application relates to a blood pump, comprising a primary pumping device, a first catheter, a secondary pumping device, and a second catheter connected in sequence. The primary pumping device has a first inlet and a first outlet, and the secondary pumping device has a second inlet and a second outlet. The secondary pumping device includes a secondary cannula, which has a proximal end, a distal end, and an enlarged portion. The proximal end is adjacent to the second catheter and has a second outlet. The distal end is connected to the first catheter and has a second inlet. The two ends of the enlarged portion are smoothly transitioned to the proximal end and the distal end, respectively. This blood pump increases the blood volume pumped by the secondary pumping device, allowing most of the blood in the aorta to be accelerated by the secondary pumping device, thus significantly improving the pumping efficiency of the secondary pumping device.

Abstract A blood pump assembly includes an introducer sheath with a proximal end and a distal end, a pump body which extends within the introducer sheath, and a catheter that interfaces with the pump body and extends proximally though the introducer sheath. In a rest state, the introducer sheath forms an oval cross-section sized to encompass the catheter and a medical device. In a constrained state when the pump body is within the introducer sheath, the cross- section of the introducer sheath is circular. The malleability of the introducer sheath allows larger medical devices to be passed through the introducer sheath, while still allowing other devices to be inserted through the introducer sheath after the pump has been guided through. A perimeter of oval cross­section of the introducer sheath is equal to the perimeter of the circular cross-section of the introducer sheath. Abstract circular cross-section of the introducer sheath. 20 26 20 47 20 18 J un 2 02 6 A b s t r a c t 2 0 2 6 2 0 4 7 2 0 1 8 J u n 2 0 2 6

The invention provides an ICU bedside hemodialysis pipeline self-adaptive anti-coagulation flushing device which comprises a dialyzer, the dialyzer is connected with an outlet pipe and an input pipe, a blood pump is arranged on the outlet pipe, and the dialyzer comprises an upper cylinder, a lower cylinder and a movable sleeve; the swing device comprises a first fixing frame arranged on the upper cylinder and the lower cylinder, a telescopic shaft is arranged on the first fixing frame, a second spring sleeves the telescopic shaft, the telescopic shaft is connected with a movable sleeve, a movable rod is arranged on the outer side face of the movable sleeve, a support is connected to the outer side face of the upper cylinder, and a movable rod is arranged on the movable rod. A rotating shaft is arranged on the support, the rotating shaft is connected with a cam motor, a cam is further arranged on the rotating shaft, and the cam is in contact connection with the moving rod; the anti-coagulation dialyzer has the advantages that the anti-coagulation effect of the dialyzer can be achieved, operation is convenient, the structure is simple, and the problem of coagulation can be effectively relieved in a self-adaptive mode.

This application relates to a blood pump and its driving device. The driving device includes a drive housing, a rotor, a stator assembly, and a bushing assembly. The drive housing has a communication port and a limiting portion. The rotor is rotatably mounted on the drive housing, with a portion of the rotor housed within the drive housing and a portion extending outside the drive housing and fixedly connected to an impeller. The stator assembly is housed within the drive housing and is capable of generating a rotating magnetic field to drive the rotor to rotate. The bushing assembly includes a first bushing and a second bushing mounted on the drive housing. The first and second bushings are arranged along the rotation axis of the rotor. One of the first and second bushings abuts against the limiting portion. The second bushing includes a ring body and an extension extending from the ring body. The extension abuts against the first bushing to space the ring body from the first bushing. The rotor rotatably passes through the first bushing and the ring body, and the communication port allows the first and second bushings to pass through. The above-mentioned driving device is easy to install and has high assembly precision.

The invention discloses an efficient easy-recovery interventional catheter pump which comprises a blood pumping pipeline, a motor, an impeller, a support cage and a recovery pipe, the blood pumping pipeline is provided with an inlet pipe and an outlet pipe, and the motor is used for driving the impeller to rotate so that blood can be pumped into the blood pumping pipeline from the inlet pipe and flows out from the outlet pipe; the support cage is connected between the blood pumping pipeline and the motor, the support cage comprises a plurality of elastic support cage wires which are uniformly arranged and distributed at intervals in the circumferential direction, and the support cage wires are obliquely distributed relative to the central axis of the support cage; the impeller is arranged in the support cage and provided with a plurality of blades with elastic deformation capacity. The inner wall of the far end of the recycling pipe is evenly provided with recycling rails in one-to-one correspondence with the supporting cage wires in the circumferential direction at intervals, and the recycling pipe is used for being arranged on the support cage in a penetrating and sleeving mode so that the impeller and the support cage can be switched from the natural state to the recycling state. The impeller unfolding space and the effective acting area of the blades can be maximized, the blood pumping efficiency is improved, and the recycling operation difficulty is reduced.

Embodiments described herein include a modular transcatheterly implantable medical device. The medical device includes a plurality of assemblable blood pumps. Each one of the blood pumps includes a pump unit and an electrical wire configured for the pump unit to be electrically operated through the electrical wire. The medical device also includes an anchor having a first end portion and a second end portion, and the anchor is configured to intraluminally assemble to and intraluminally unassemble from the blood pumps. The medical device also includes a catheter. The catheter is configured to be in a slidable relationship with each one of the electrical wires for intraluminally assembling the blood pumps to the anchor and for intraluminally unassembling the blood pumps from the anchor. The medical device further includes a flexible linker configured to couple the catheter and the anchor.

According to the bleeding cage and the blood pump thereof, the blood mixing loss can be reduced, the supporting strength is good, the whole bleeding cage is in a circular tube shape, a far-end opening of the bleeding cage forms a blood inlet, a bleeding opening and a flushing outlet are formed in the outer wall of the bleeding cage, and the bleeding opening and the flushing outlet are formed in the axial direction at intervals. Normal blood pumped by the blood pump flows out from the blood outlet, and flushing fluid flows out from the flushing outlet after flushing the gap, so that energy loss caused by blood mixing is reduced, and the hydraulic performance of the blood pump is improved; the bleeding cage has a certain length in the axial direction, and the bleeding opening and the flushing outlet are arranged at an interval, so that the overall structural strength of the bleeding cage is ensured, and the bleeding cage is prevented from being deformed due to stress; meanwhile, the turbulence influence generated when blood flows through the bleeding cage is reduced, stable rotation of the magnet is improved, and then the rotation stability of the whole blood pump is guaranteed.

This utility model belongs to the field of medical devices, and in particular, it is a test bench for testing the driving performance of axial flow blood pump coils. It includes a base, a brake bracket fixedly mounted on a rear sliding frame, a hysteresis brake fixedly connected to the brake bracket, a coil at the driven magnet, and a coil fixing cylinder fixedly connected to the coil. During testing, the resistance applied to the driven magnet shaft by the hysteresis brake is adjusted to simulate the load resistance experienced by the blood pump rotor blades during actual use. Each positioning rod is fixedly connected to three clamping rods arranged in a circumferential array. By turning the inner ring screw, the self-centering inner ring rotates, which in turn rotates the positioning rods. The clamping rods hold the coil fixing cylinder, facilitating the positioning of the coil and ensuring that the axis of the coil and the driven magnet are aligned. This ensures the stability and accuracy of the test. Data testing can be performed without installation in the blood pump hydraulic performance testing pipeline system, shortening the testing cycle, avoiding repeated disassembly and assembly, and ensuring the independence and reliability of the test data.

The percutaneous intervention type axial flow blood pump comprises an impeller assembly, a flexible shaft transmission assembly and a handle assembly, the impeller assembly and the handle assembly are connected through the flexible shaft transmission assembly, the flexible shaft transmission assembly comprises a flexible shaft, a transition sleeve and a protective sleeve, the transition sleeve is connected with a flow guide tail cone of the impeller assembly, and the protective sleeve is connected with the impeller assembly. One end of the protective sleeve is fixed to the inner wall of the transition sleeve, the other end of the protective sleeve is connected with the handle assembly, the handle assembly is provided with an in-vitro micro motor in transmission connection with one end of the flexible shaft, and the other end of the flexible shaft is connected with an impeller rotor of the impeller assembly. The impeller assembly and part of the flexible shaft transmission assembly of the axial flow blood pump are percutaneously implanted into the body of a patient, the handle assembly is located outside the body, and the impeller assembly is kept fixed in the descending aorta through an elastic support of the impeller assembly. The axial flow blood pump adopts an in-vitro micro motor and flexible shaft transmission mode, and the problems that the temperature rise of an axial flow blood pump with a built-in motor is too high, abrasion particles are separated out, and fault inspection is not convenient are solved.

The invention provides an impeller state detection method and device, a blood pump, electronic equipment and a storage medium. The method is applied to the blood pump, the blood pump is a full magnetic suspension blood pump, the blood pump comprises a pump head assembly and a driving assembly, the pump head assembly comprises a pump shell and an impeller capable of being completely suspended in the pump shell, the driving assembly is connected with the pump head assembly, and the driving assembly magnetically drives the impeller to operate in the pump shell. Acquiring a mechanical wave signal which is acquired by a sensor and is generated when the impeller runs; and outputting alarm information corresponding to an abnormal operation event under the condition that the abnormal operation event of the impeller is detected based on the mechanical wave signal. By the adoption of the method and device, the abnormal condition that the impeller operates unstably in the early stage can be effectively recognized as early as possible, an alarm is given in time, the risks of supporting flow instability, pump body damage or hemolysis caused by continuous abnormal operation of the impeller are reduced, and the safety and reliability of operation of the blood pump are improved.

Example medical devices including example cardiac pumps are disclosed. An example percutaneous circulatory support device system includes a blood pump including a pump housing having a distal end region and a proximal end region, a blood inlet positioned along the distal end region, a blood outlet positioned along the proximal end region and a first diaphragm pump positioned within the pump housing. Further, the first diaphragm pump is configured to draw blood into the pump inlet and pump blood out of the blood outlet.

Blood pump system comprising: - a blood pump (1) comprising a discharge structure (2) which is pneumatically driven for alternately applying suction and pressure in operation, in particular for cyclically driving fluid through a blood pump line (3) discharge, wherein the discharge structure (2) is preferably a membrane; - a pneumatic driver (10) for pneumatically driving the discharge structure (2) of the blood pump (1) via a pneumatic control line (5); wherein the pneumatic driver (10) comprises a piston-cylinder assembly (11, 12), the cylinder (12) having a gas communication port (13) for connection to the pneumatic control line (5), the piston-cylinder assembly (11, 12) being provided with an electromagnetic actuator (14) for moving the piston (11) relative to the cylinder (12). The invention also relates to a pneumatic driver (10) and to a method for driving a blood pump.

This invention relates to a blood pump assembly fixture and a blood pump assembly method. The blood pump assembly fixture includes a base, a fixing mechanism, and an adjusting mechanism. The base has a blood pump mounting portion with a mounting port for the blood pump's rotating shaft and end cap assembly to extend from. The fixing mechanism is disposed on the base and can press the blood pump against the blood pump mounting portion. The adjusting mechanism includes an adjusting component and a pushing component, both of which are disposed on the base. The pushing component is located between the blood pump mounting portion and the adjusting component. The pushing component has a first end that can abut against the end cap assembly and a second end that can abut against the rotating shaft. The adjusting component can drive the pushing component to move towards the mounting port, so that the first end abuts against the end cap assembly and the second end abuts against the rotating shaft. This configuration can improve the assembly efficiency of the blood pump.