Driving apparatus and blood pump
AssigneeShenzhen Core Medical Technology Co., Ltd.
InventorsYicheng ZHU, Shunzhou YU
Life of this patent
Estimating the term…
Abstract
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.
Claims20
A driving device configured to driving an impeller to rotate, the driving device comprising:
- a housing assembly provided with a mounting hole, the mounting hole being provided with a concave spherical wall;
- a rotating component comprising a rotating shaft and a rotating head fixedly connected to the rotating shaft, the rotating shaft being rotatably mounted on the housing assembly, and the rotating shaft being provided with a connecting section located outside the housing assembly and configured to be connected to the impeller, the rotating head being rotatably provided in the mounting hole, the rotating head being provided with a convex spherical surface, the convex spherical surface protruding in a direction away from the connecting section along an axis of the rotating shaft, and the convex spherical surface being capable of abutting against the concave spherical wall;
- a rotor fixedly connected to the rotating shaft;
- and
- a stator configured to drive the rotor to rotate, a magnetic force forming between the rotor and the stator, and the magnetic force configured to enable the convex spherical surface to abut against the concave spherical wall.
The driving device according to claim1, wherein the rotating head is further provided with a top surface, the top surface and the bottom surface are spaced apart along the axis of the rotating shaft, a diameter of the top surface is less than a diameter of the bottom surface, and the convex spherical surface connects the top surface and the bottom surface.
A blood pump comprising an impeller and a driving device, the driving device comprising:
- a housing assembly provided with a mounting hole, the mounting hole being provided with a concave spherical wall;
- a rotating component comprising a rotating shaft and a rotating head fixedly connected to the rotating shaft, the rotating shaft being rotatably mounted on the housing assembly, and the rotating shaft being provided with a connecting section located outside the housing assembly and fixedly connected to the impeller, the rotating head being rotatably provided in the mounting hole, the rotating head being provided with a convex spherical surface, the convex spherical surface protruding in a direction away from the connecting section along an axis of the rotating shaft, and the convex spherical surface being capable of abutting against the concave spherical wall;
- a rotor fixedly connected to the rotating shaft;
- and
- a stator configured to drive the rotor to rotate, a magnetic force forming between the rotor and the stator, and the magnetic force configured to enable the convex spherical surface to abut against the concave spherical wall.
Dependencies are inferred from the claim text.