Blood Pump Drive Mechanism With Spherical Radial Constraint
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Solution Overview
Problem
Existing blood pumps require complex structures for positioning or limiting the rotating assembly, leading to intricate designs that complicate assembly and operation.
Innovation Solution
A driving mechanism with a housing assembly and rotating assembly featuring spherical grooves and a sphere that slidably abuts against concave spherical walls, simplifying the structure by limiting the rotating assembly's radial movement and reducing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a structure for positioning or limiting the rotating assembly is provided, then stable rotation of the rotating assembly is achieved, but the driving mechanism becomes complex in structure
Solution Approach 1:
The patent employs spherical geometry by providing a sphere with a spherical groove on the rotating assembly that cooperates with a spherical protrusion on the housing assembly. This spherical configuration enables stable positioning and limiting of the rotating assembly through curved surface contact, achieving reliable rotation while maintaining structural simplicity. The spherical geometry naturally provides stable contact and positioning without requiring additional complex positioning mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The simplified structure ensures stable rotation of the impeller, reduces assembly difficulty, and enhances the overall stability and efficiency of the blood pump.
Implementation Method 1
a sphere partially arranged in the first groove and partially arranged in the second groove, and the sphere respectively slidably abutting against the first spherical wall and the second spherical wall
Data Source
AI summary
A driving mechanism and a blood pump are disclosed. The driving mechanism comprises a housing assembly, a rotating assembly, and a sphere. The rotating assembly has a distal end and a proximal end; the distal end of the rotating assembly is rotatably mounted to the housing assembly. A first groove is formed on the proximal end of the rotating assembly, and the first groove has an internally concave first spherical wall. A second groove is formed on the housing assembly, and the second groove is arranged opposite the first groove; the second groove has an internally concave second spherical wall. A portion of the sphere is arranged within the first groove and a portion within the second groove, which are capable of sliding engagement with the first spherical wall and the second spherical wall, respectively.