一种双心辅助装置的转子组件
By employing magnetic levitation technology and an open impeller design, combined with radial and axial support structures, the problem of axial force control in existing blood pumps has been solved, achieving miniaturized and highly efficient dual-cardiac assist function, thus improving the safety of the blood pump and the quality of life for patients.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ORIENTAL CHINA (HAINAN) INVESTMENT CO LTD
- Filing Date
- 2025-01-14
- Publication Date
- 2026-07-17
AI Technical Summary
The existing rotor assembly is subjected to a large passive axial upward hydraulic thrust, which makes axial balance control difficult. In addition, the existing dual-heart assist blood pump device is large in size and highly invasive, affecting the patient's quality of life.
The dual-center auxiliary device, designed with magnetic levitation technology, features an open structure at the lower end of the impeller assembly. Combined with radial and axial support structures, it uses sensors to detect the impeller position and balances the axial force through electromagnetic force, reducing hydraulic thrust and achieving axial levitation.
It effectively reduces the upward axial hydraulic thrust, facilitates axial balance control, reduces the blood pump volume, improves mechanical efficiency and safety, reduces implantation invasiveness, and is suitable for blood pumps with dual-heart assist function.
Smart Images
Figure CN224506091U_ABST
Abstract
Claims
1. A rotor assembly for a dual-center auxiliary device, comprising a shaft (21), a first impeller assembly, a connecting rod (22), and a second impeller assembly connected in sequence; characterized in that, The first impeller assembly consists of a main upper cover (231) and main blades (232) fixed on the main upper cover (231). The second impeller assembly consists of a secondary cover (241) and secondary blades (242) fixed on the secondary cover (241), with the main blades (232) positioned between the main cover (231) and the secondary cover (241).
2. A rotor assembly for a dual heart assist device according to claim 1, wherein, The outer diameter of the main blade (232) is larger than the outer diameter of the secondary blade (242).
3. A rotor assembly for a dual heart assist device according to claim 1, wherein, The main cover (231) is made of magnet, and the outer diameter of the main cover (231) is smaller than the outer diameter of the secondary cover (241).
4. A rotor assembly for a dual heart assist device according to claim 1, wherein, An inner sliding head (51) is fixed on the connecting rod (22).
5. A rotor assembly for a dual heart assist device according to claim 4, wherein, The inner sliding head (51) has a first slicing structure (511) at both ends.
6. A rotor assembly for a dual heart assist device according to claim 1, wherein, The outer diameter of the main cover (231) is equal to the outer diameter of the main blade (232).
7. A rotor assembly for a dual heart assist device according to claim 1, wherein, An inner permanent magnet ring is provided inside the shaft (21), and the inner permanent magnet ring is coaxially arranged with the shaft (21).
8. A rotor assembly for a dual heart assist device according to claim 7, wherein, The inner permanent magnet ring includes a fourth permanent magnet segment (34), a fifth permanent magnet segment (35) and a sixth permanent magnet segment (36) arranged in sequence. The inner diameter and outer diameter of the fourth permanent magnet segment (34) and the sixth permanent magnet segment (36) have opposite polarities, and the polarities of the two ends of the fifth permanent magnet segment (35) are different.