发明名称 |
HJELPEINNRETNING FOR HOEYRE HJERTEKAMMER |
摘要 |
A right ventricular assist device for assisting the circulation of the blood includes a smooth segmented polyurethane sac having a single valveless passageway to provide a single inlet and outlet. A rigid ellipsoidal shell surrounds the sac and has a first opening for the single valveless passageway and a second opening for pressurizing an interior portion of the shell. A flexible diaphragm extends across the interior of the shell and divides the interior into two unequal volumes; the sac and first opening in a first and larger volume, and a second opening and a pressurizing chamber in a second and smaller volume. The diaphragm is angled and dimensioned to expel up to 90% of the blood present in the sac by pressure supplied through the second opening. A vascular graft is attached between the valveless passageway and a pulmonary artery. Alternately, the sac may be formed with an elongate neck which is reinforced with a dacron graft anastomosed to the pulmonary artery. |
申请公布号 |
NO851073(A) |
申请公布日期 |
1985.09.20 |
申请号 |
NO19850001073 |
申请日期 |
1985.03.18 |
申请人 |
RESEARCH CORP, |
发明人 |
PIERCE, WILLIAM,;WISMAN, CRAIG,;DANACHY, JAMES, |
分类号 |
A61M1/10;A61M1/12;(IPC1-7):A61F/ |
主分类号 |
A61M1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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