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US 10,377,097 B2Granted
Centrifugal pumps for medical uses
AssigneeTerumo Cardiovascular Systems Corporation
InventorsTimothy John Canatella, Gregory Peter Muennich, Luke Powers
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Abstract
Extracorporeal circuit devices can be used for on-pump open-heart surgery to support surgical procedures such as coronary artery bypass grafting. In some cases, a centrifugal pump is used as part of an extracorporeal circuit. Centrifugal pump heads are described herein that induce flow on two sides of an impeller plate, and that can be conveniently mechanically assembled.
Claims10
A centrifugal pump for pumping blood in an extracorporeal circuit, the centrifugal pump comprising:
- a housing defining an inlet port, an outlet port, and an internal space;
- and
- an impeller disposed within the internal space, the impeller comprising:
- an impellor skeleton component comprising a first polymer, the impellor skeleton component at least partially encapsulating a plurality of magnets that are coupled to the impellor skeleton component;
- and
- a second polymer that is molded over the impellor skeleton component and the plurality of magnets to create an outer shape of the impellor including a plurality of vanes extending from a plate member,
- wherein the first polymer differs from the second polymer, and wherein the plurality of magnets and the impellor skeleton component are encapsulated by the second polymer.
4 more elements
Dependencies are inferred from the claim text.