Blood pump device
First Claim
1. A blood pump device comprising:
- a housing having a blood inflow port and a blood outflow port;
an impeller rotatably positioned inside the housing to feed blood, the impeller being provided with a magnetic body;
an impeller rotating torque generating section attracting the impeller from outside the housing and rotating the impeller;
a non-contact type bearing mechanism enabling rotation of the impeller in the housing in a non-contact state relative to an inside surface of the housing; and
an impeller fixing member detachably mounted to the housing and preventing the impeller from moving inside the housing;
wherein;
the blood pump device is a centrifugal type blood pump device;
the housing comprises a blood passage extending from the blood inflow port;
the impeller comprises a central opening part located on an extension line of the blood passage;
the impeller fixing member comprises a detachable mounting section detachably mounted to the blood inflow port, and an impeller fixing section extending from the mounting section, the impeller fixing section being positioned in the blood passage and applying a force to the impeller to hold the impeller or press the impeller against the inside surface of the housing to fix the impeller against movement.
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0 Petitions
Accused Products
Abstract
A blood pump device comprises a housing having a blood inflow port and a blood outflow port, an impeller having a magnetic body or bodies and rotated in a non-contact state in relation to the inside surface of the housing to feed blood, an impeller rotating torque generating section for attracting the impeller from the outside of the housing and rotating the impeller, and a non-contact type bearing mechanism enabling the rotation in the non-contact state of the impeller inside the housing. An impeller fixing member is detachably mounted to the housing and prevents the impeller from moving inside the housing, whereby the impeller can be prevented from moving inside the housing before use, and damage to the impeller or the housing inside surface can be avoided.
24 Citations
18 Claims
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1. A blood pump device comprising:
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a housing having a blood inflow port and a blood outflow port; an impeller rotatably positioned inside the housing to feed blood, the impeller being provided with a magnetic body; an impeller rotating torque generating section attracting the impeller from outside the housing and rotating the impeller; a non-contact type bearing mechanism enabling rotation of the impeller in the housing in a non-contact state relative to an inside surface of the housing; and an impeller fixing member detachably mounted to the housing and preventing the impeller from moving inside the housing; wherein; the blood pump device is a centrifugal type blood pump device; the housing comprises a blood passage extending from the blood inflow port; the impeller comprises a central opening part located on an extension line of the blood passage; the impeller fixing member comprises a detachable mounting section detachably mounted to the blood inflow port, and an impeller fixing section extending from the mounting section, the impeller fixing section being positioned in the blood passage and applying a force to the impeller to hold the impeller or press the impeller against the inside surface of the housing to fix the impeller against movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A blood pump device comprising:
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a housing having a blood inflow port and a blood outflow port; an impeller rotatably positioned inside the housing to feed blood, the impeller being provided with a magnetic body; a motor positioned outside the housing and operable to rotate the impeller; a non-contact type bearing mechanism enabling rotation of the impeller in the housing in a non-contact state relative to an inside surface of the housing; a mounting section detachably mounted on the housing; and an entering section extending from the mounting section, the entering section passing through the blood inflow port into the housing and engaging the impeller to fix the impeller against movement. - View Dependent Claims (17, 18)
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Specification