66results about "Circulatory assistance devices" patented technology

The application is a hollow cup motor coil winding device and method with flat winding, high size precision and high production efficiency. A shaft pipe is coaxially sleeved on a rotating shaft, and a first jack set and a second jack set are arranged on the shaft pipe. The coil is wound based on the outer diameter of the shaft pipe. Therefore, when the coil with different inner diameters and lengths is wound, only the shaft pipe needs to be replaced, thereby improving the versatility of the tooling. After the coil is wound, the coil is directly taken off from the rotating shaft together with the shaft pipe, and is synchronously sleeved on a shaping column of a rounding unit to be shaped. During the shaping, the outer diameter of the shaft pipe is still used as the reference, thereby ensuring the precision of the inner diameter of the shaped coil.

The application relates to the technical field of blood purification medical devices, and discloses a plasma separation and adsorption integrated blood purification device and a single-pump pipeline system, which can integrate plasma separation and adsorption functions and simplify the device and the pipeline. The plasma separation and adsorption integrated blood purification device comprises an integrated plasma treatment device and a single-pump matching treatment device; the integrated plasma treatment device comprises a body; a plasma separation cavity and a plasma adsorption cavity are sequentially arranged in the body from top to bottom; and specific resin adsorption medium is filled in the plasma adsorption cavity. The single-pump pipeline system adopts the plasma separation and adsorption integrated blood purification device; the single-pump pipeline system further comprises a blood pump and a blood transfusion pipeline. The plasma separation and adsorption integrated blood purification device and the single-pump pipeline system can realize single-pump driving treatment, reduce equipment procurement and maintenance costs, simplify the operation process of medical staff, improve treatment safety and patient tolerance, and facilitate popularization and application of primary medical institutions.

This invention relates to the field of biomedical engineering and discloses a remote monitoring parameter adjustment control system and method for blood pump equipment. The system includes acquiring pump speed and hemodynamic response signals, performing phase calibration by combining the pulsation period and fluid inertial delay, and constructing a non-uniform response segment. For alternating sections of flow rate drops and pressure drops in the flow response expression structure, cross-segment consistency is checked to form an abnormal residual distribution. The source of disturbance is decomposed around the abnormal residual distribution, dividing the disturbance according to pump load changes, vascular compliance feedback, and measurement hysteresis channels, and reconstructing the disturbance propagation path. Under the constraint of the disturbance propagation path, with the goal of maintaining perfusion stability and avoiding negative pressure, amplitude-limited trial adjustments are applied to key nodes to construct a regulatory response feature set. Combining hemodynamic stability criteria and individual physiological constraints, a regulatory strategy is output. This invention has the advantages of improving blood perfusion stability and the controllability of the regulation process.

The embodiment of the present application provides a shell assembly, a manufacturing method thereof and a blood pump, the shell assembly comprising: a main shell provided with a connecting portion for connecting an inlet and outlet sleeve, an accommodation cavity, an inlet passage and an outlet passage communicated with the accommodation cavity, the inlet passage and the outlet passage penetrating through the connecting portion; and an adapter provided with a sleeve connection hole, the sleeve connection hole and the connecting portion being connected and sealed, and an end of the adapter opposite to the main shell being capable of connecting the inlet and outlet sleeve. The technical scheme of the present application can realize the assembly convenience of the shell assembly and facilitate the connection of the shell assembly with other structures.

Catheter blood pumps that include an expandable pump portion. The pump portions include an collapsible blood conduit that defines a blood lumen. The collapsible blood conduits include a collapsible scaffold adapted to provide radial support to the blood conduit. The pump portion also includes one or more impellers.

To provide a cannula for blood removal that is not difficult to be inserted into a blood vessel even when a diameter of a blood vessel insertion part is increased.SOLUTION: A cannula for blood removal 10 includes: an external cylinder 11; and a blood vessel insertion part 12 stored in the external cylinder 11 while the diameter thereof is compressed. Pulling out the external cylinder 11 after insertion into a blood vessel allows the blood vessel insertion part 12 to extend the diameter thereof in the blood vessel.SELECTED DRAWING: Figure 3

An apparatus for coupling a blood pump to a patient's heart is provided. The apparatus includes a sewing ring designed to be sutured to the patient's heart, wherein the sewing ring has an opening sized and shaped to receive an inflow cannula of the blood pump. The apparatus further includes a locking element coupled to a housing of the blood pump and transitionable between a closed state and an open state. The locking element is structured to receive the sewing ring in the open state and engage the sewing ring in the closed state to prevent translational and rotational movement of the locking element relative to the sewing ring. In addition, the apparatus includes a biased structure designed to bias the locking element in the closed state.

An endovascular device includes a body formed with a tip portion, a mechanical treatment portion comprising an expandable portion, and a proximal portion proximate to the mechanical treatment portion. A tube is slidably disposed around at least a portion of the body, wherein the tube is configured to slide between a distal position of the tube where the tube covers at least the expandable portion and a proximal position of the tube where the tube is not covering the expandable portion. A distance traveled by the tube between the proximal position of the tube and the distal position of the tube is equal to a length of the mechanical treatment portion plus a predetermined distance.

To provide a blood outflow cage for intravascular blood pump assemblies, sized for passage through the patient's vascular lumen. [Solution] A distal cap having a substantially conical, substantially curved conical, or substantially dome-shaped outer surface; a diffuser having a substantially conical or substantially curved conical outer surface and positioned proximal to the distal cap; two or more blood drainage openings, each defined on its inner and outer surfaces by two struts, each strut having a rounded inner edge and outer edge and a rounded joint with the diffuser, and the proximal end of each blood drainage opening having a rounded corner, and a peripheral wall having a blood drainage opening and a first cylindrical section adjacent to the proximal end of each strut.

Percutaneous circulatory support devices and systems are disclosed which may include a blood pump, a flexible cannula extending distal of the blood pump, an adaptor including a plurality of struts defining a plurality of blood inflow windows therebetween. The adaptor may include a proximal end coupled to a distal end of the cannula at an interface. A distal tip may be coupled to a distal end of the adaptor and extend distally therefrom, whereby the interface between the adaptor and the distal end of the cannula may have a circular cross-sectional shape in an equilibrium configuration. The interface between the adaptor and the distal end of the cannula may be configured and / or otherwise adapted to deform when subjected to an external force during use to alter the cross-sectional shape to a non-circular cross-sectional shape.

A medical fluid suction pump arrangement, characterized in that it comprises: a support tube body, wherein a drainage channel is provided in the support tube body, the drainage channel extending from the distal section of the support tube body to the proximal section of the support tube body; an impeller, wherein the impeller is provided on the outside at the distal end of the support tube body; a gear mechanism comprising a gear shaft and a bearing, wherein the bearing is located in the support tube body, the gear shaft extends axially through the support tube body and projects out of this support tube body at its distal end, the gear shaft is drivenly connected to the impeller, and the gear shaft is rotatably mounted in the support tube body via the bearing; the bearing is located along the path of the drainage channel, wherein the bearing is provided with an axially through-hole or slot that is connected to the drainage channel.

Devices and methods of the disclosure use an intravascular catheter with deployable sealing elements to create a fluid trap around an outlet of a lymphatic duct and drain lymph passively to a collection vessel that may be pressurized to a predetermined pressure or a partial vacuum. Due to the fixed pressure, the device creates a low-pressure area at the lymphatic duct, which drains lymph passively without any mechanical pump or impeller. In certain aspects, a device includes a catheter for insertion into a vein of the venous angle of a patient, with proximal and distal sealing elements deployable to seal the vein to thereby define a fluid trap around the lymphatic outlet. A port within the fluid trap opens to a drainage lumen extending along the catheter to a collection vessel. The device may be configured such that the drainage lumen passively drains the fluid trap into the collection vessel.

Various embodiments of an implantable medical device and a system that includes such device are disclosed. The device includes a housing that includes a polymeric material, a sealed container disposed within the housing, and an electronic assembly disposed within the container. The device also includes a battery disposed within the container and electrically connected to the electronic assembly.

One aspect of the invention relates to a cannula (1) for draining fluid from a cavity, comprising a distal end, a proximal end, a main lumen, and a lateral wall comprising: a plurality of lateral openings (113) formed through the lateral wall, in a central portion of the lateral wall; two inflatable balloons (150, 160) arranged in a distal portion of the lateral wall, each balloon assuming an inflated or deflated state, each state leaving the lateral openings free; the first balloon encircling the circumference of the lateral wall; the second balloon encircling the circumference of the main lumen and, in the inflated state, closing the main lumen. Figure 3

This invention provides a pump housing comprising a first housing, a second housing, and an assembly. The second housing is connected to the first housing to form a receiving cavity capable of accommodating an impeller. At least one of the first and second housings has a groove with an opening facing the receiving cavity. The groove has a first side annular surface. The assembly includes a connected mounting surface and a second side annular surface. The assembly is accommodated in the groove, with the mounting surface facing the surface of the impeller housed within the receiving cavity, and the second side annular surface contacting the first side annular surface. The pump housing provided by this invention, by additionally providing the assembly to be installed in at least one of the first and second housings, allows for separate processing of the first housing, the second housing, and the assembly. This enables control over the flatness of the mounting surface, providing a basis for significant improvement in the flatness of the mounting surface and preventing thrombosis while improving the overall operational accuracy of the ventricular assist device. This invention also provides a pump body and a ventricular assist device.

The present disclosure relates to systems, apparatuses, and methods used in the control and delivery of a fluid flow, and more specifically, to pump systems for use in high magnetic fields. According to the present disclosure, it is appreciated that small conductive elements within pumps may generate Eddy currents when used in environments where a strong magnetic field is present. Thus, in one embodiment, an omnidirectional pump system is provided comprising two or more pumps having conductive elements in different orientations relative to the direction of the magnetic field. Also provided herein are medical apparatuses comprising the omnidirectional pump system and methods of using such systems.

A catheter according to an embodiment is disclosed. In a catheter connected to an extracorporeal membrane oxygenation device, the catheter may comprise: a catheter body; and a wire which guides the intravascular insertion of the catheter body, wherein the catheter body may have, at an end portion thereof, an adjustable means for controlling a direction of outflow from the catheter body, and the adjustable means may be provided to form the end portion of the catheter body into a U-shape.

A blood pump (10), comprising a sleeve housing (100), a driving unit (200), and a sleeve assembly (300). The driving unit (200) is arranged in the sleeve housing (100). The sleeve housing (100) and the driving unit (200) are spaced by a flow gap (500). The sleeve assembly (300) comprises a compensation tube (310), the compensation tube (310) being fixedly connected to the sleeve housing (100) and being in communication with the flow gap (500) to form a blood flow channel. A proximal end of the sleeve housing (100) is provided with a first opening (111), and a distal end of the sleeve assembly is provided with a second opening (321).

An intravascular blood pump (1) comprises a ring seal (10) configured to assume a collapsed configuration and an expanded configuration and to come into contact with and seal against an inner wall of a blood vessel of a patient when inserted in the blood vessel of the patient in the expanded configuration. A support member (12; 13) is arranged inside the ring seal (10) to internally support the ring seal (10), wherein the support member (12; 13) is configured to at least partially collapse when a predetermined pressure difference between a proximal region and a distal region of the blood vessel acting on the ring seal (10) is exceeded.

The application discloses a kind of ventricular assist control equipment monitoring method, device, equipment, storage medium and program product.Belong to the technical field of medical equipment, the method comprises: obtaining the actual electrocardiogram data of target patient within a preset time length, the target patient is the patient using blood pump motor, and the preset time length includes at least one cardiac cycle;Actual electrocardiogram data is extracted in time domain characteristics, and the current change rate and current similarity under every two different cardiac cycles are obtained;Actual electrocardiogram data is extracted in frequency domain characteristics, and the center point frequency of each cardiac cycle is obtained;Based on the current change rate, current similarity and center point frequency, the state of the blood pump motor is monitored, and a monitoring result is obtained.According to the embodiments of the application, the accuracy and reliability of the blood pump motor operating state monitoring can be improved.

Provided are a blood pump and a driving apparatus. The driving apparatus comprises a housing assembly, a rotating shaft, and a rotating head fixedly connected to the rotating shaft. The housing assembly is provided with a mounting hole. The mounting hole is provided with a concave spherical wall. The rotating shaft is provided with a connecting section located outside the housing assembly and configured for being connected to an impeller. The rotating head is rotatably arranged in the mounting hole and is provided with a convex spherical surface. The convex spherical surface protrudes in a direction away from the connecting section along the axis of the rotating shaft, and can abut against the concave spherical wall.

A portable hemodialysis system is provided including a dialyzer, a closed loop blood flow path which transports blood from a patient, to the dialyzer, and back to the patient, and a closed loop dialysate flow path which transports dialysate through the dialyzer. The hemodialysis system includes a hemodialysis machine and dialysate generator which are physically connectable to, and disconnectable from, one another. To connect the hemodialysis machine and dialysate generator together, both the hemodialysis machine and dialysate generator possess connectable and disconnectable electrical connectors and fluid connectors which are positioned and constructed to allow both a fluid and electrical connection between the two machines. The hemodialysis machine includes a processor and a user interface, preferably in the form of a touchscreen, that is capable of controlling both the functions of the hemodialysis machine and the dialysate generator.

Systems, devices and methods are provided for supporting cardiac function. One system comprises an implantable intracardiac device comprising a motor and a pump, an external energy source and a transmitting resonator comprising a magnetic coil and configured to receive a first level of power from the external energy source and transmit a second level of power through an outer skin surface of the patient. The system further comprises a receiving resonator configured for implantation within the patient, comprising a magnetic coil and configured to transmit a third level of power to the motor within the implanted device. The third level of power is at least 40% of the first level of power, thereby ensuring that the pump will continuously pump blood through the heart at a sufficient rate regardless of any changes in the system, such as power loss due to transmission inefficiencies and / or changes in the relative positions between the transmitting and receiving coils.

Disclosed is an impeller and a conduit pump, the impeller comprising: a hub, and a vane formed on the hub and switchable between a folded state and an unfolded state. The cross-sectional shape of the vane at any position perpendicular to the axial direction of the hub is curved, and the bending direction is consistent with the rotation direction of the impeller during operation. The vane comprises first and second material layers arranged in layers, and the first material layer is located on the outer side of the second material layer along the bending direction. The first and second material layers have different expansion coefficients for a specific stimulus, and the first material layer has a different expansion deformation amount than the second material layer under the specific stimulus.

The present disclosure relates to a motor (60) for a blood pump. The motor (60) has a first motor end (68) and a second motor end (70) and comprises a motor housing (62), a stator (64) disposed within the motor housing (62), a rotor (66) disposed within the motor housing (62), a fluid path (72) extending inside the motor (60) between the first motor end (68) and the second motor end (70), and an output shaft (132) coupled to the rotor (66). The rotor (66) is rotatable about a rotational axis (RA) extending in an axial direction. A part of the fluid path (72) is disposed between the stator (64) and the rotor (66) in a radial direction relative to the rotational axis (RA) and forms a fluid guiding gap (74). The fluid path (72) comprises a fluid guiding structure (160). The present disclosure further relates to a motor assembly and to a blood pump.

An enclosure for an implantable device is provided. The enclosure includes a cup defining a cavity, the cup including a non-metallic body, and a weld ring coupled to the non-metallic body, and a lid, wherein the lid is weldable to the weld ring to couple the cup to the lid and hermetically seal the enclosure.