1975-01-28
1977-02-22
Truluck, Dalton L.
Surgery
Truss
Perineal
3 17, A61M 103
Patent
active
040087107
ABSTRACT:
A blood pump comprises a rigid outer wall which defines a squeeze pump that is operated by a pumping medium. A valve mechanism is used for controlling the flow of blood through the pump. The squeeze pump includes a flexible pumping tube, an entry side and an exit side, entry side connection mechanism and an exit side connection mechanism. The entry side connection mechanism includes an atrium that is defined by the outer wall and includes a diaphragm forming an internal lining within the atrium. The lining diaphragm is separated from the rigid outer wall by the pumping medium used to operate the squeeze pump. The exit side connection mechanism includes a tube bend constituting a curvature of the aorta and has a diaphragm forming an internal lining within the tube bend. The internal lining of the tube bend is also separated from the rigid outer wall by the pumping medium. The cross-section of the atrium on the entry side is substantially circular and the flow of blood is directed tangentially into the atrium. Tube connections are provided to the atrium and the tube bend for directing pumping medium from these parts into an associated air sac alleviator. All parts of the pump which come into contact with the blood and are not covered by a lining are made of a material having a negative dipole moment.
REFERENCES:
patent: 3327322 (1967-06-01), Norton
patent: 3550162 (1970-12-01), Huffman et al.
patent: 3668708 (1972-06-01), Tindal
patent: 3723754 (1973-03-01), Murayama et al.
patent: 3726762 (1973-04-01), Puharich
patent: 3733616 (1973-05-01), Willis
patent: 3766567 (1973-10-01), Kahn et al.
Arutsu et al., ASAIO, vol. XIV, pp. 323-327.
Robinson et al., ASAIO, vol. XIX, pp. 229-234.
Fourt et al., ASAIO, vol. XII, pp. 155-165.
Markva Neil F.
Truluck Dalton L.
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