Surgery – Truss – Pad
Patent
1978-06-02
1980-09-16
Frinks, Ronald L.
Surgery
Truss
Pad
128 1D, 417384, 417394, 417474, A61F 124, A61M 103
Patent
active
042221277
ABSTRACT:
A blood pump for implant or paracorporeal use having a rigid case with inlet and outlet valves defining a pumping cavity; an integral thin walled flexible sac freely confined within a pumping cavity; and a flexible diaphragm within the cavity conforming to the shape of the adjacent side of the sac. The case includes a control ring projecting into the cavity between the diaphragm and sac. The diaphragm is moved between diastolic and systolic positions to pump blood through the valves. During pumping, the ring distributes flexing of the diaphragm over an increased area while also preventing the interior walls of the sac from contacting each other. The outlet port and the portion of the sac immediately surrounding the outlet port are less flexible than the remainder of the sac away from the port and the portion of the diaphragm overlying the outlet port is less flexible than the remainder of the diaphragm. The less flexible portions of the sac and diaphragm improve pressure pulse pumping so that the more flexible portion of the sac away from the outlet port is initially collapsed and the sac is progressively collapsed from that portion to the outlet port to minimize stasis in the pumping chamber. The less flexible portion of the sac also prevents collapse at the port due to the decreased Venturi effect pressure during the systolic stroke.
REFERENCES:
patent: 3327322 (1967-06-01), Norton
patent: 3406633 (1968-10-01), Schomburg
patent: 3425064 (1969-02-01), Carnevale et al.
patent: 3518702 (1970-07-01), LaRussa
patent: 3755825 (1973-09-01), DeBakey et al.
patent: 3766567 (1973-10-01), Kahn et al.
patent: 3771173 (1973-11-01), Lamb, Jr.
patent: 3783453 (1974-01-01), Bolie
patent: 3842440 (1974-10-01), Karlson
patent: 3919722 (1975-11-01), Harmison
patent: 3974825 (1976-08-01), Normann
patent: 4078267 (1978-03-01), Cieszynski
"Criteria for Human Total Artificial Heart Implantation based on Steady State Animal Data", by R. K. Javik et al., Trans. American Society for Artificial Internal Organs, vol. XXIII, 1977, pp. 535-542.
"The Artificial Heart", by William S. Pierce et al., Reprint from the Archives of Surgery, vol. 112, Dec. 1977, pp. 1430-1438.
"Prolonged Mechanical Support of the Left Ventricle", by William S. Pierce et al., Presented at American Heart Assn. Meeting, Nov. 1977 Published in Circulation, Supp. 1, vol. 58, No. 3, Sep. 1978.
Polymers in Biomedical Devices: Materials for Artificial Heart and Circulatory Assist Devices, by W. S. Pierce, Reprint from Polymers in Medicine and Surgery, 1974, pp. 263-285.
"Assisted Circulation, The Mechanical Heart", by Lawrence S. Cohen, Thoracic and Cardiovascular Surgery with Related Pathology, Third Edition-William W. L. Glenn et al., 1975, pp. 1206-1222.
"Status of the Artificial Heart and Cardiac Assist Devices in The United States", by W. J. Kolff et al., Transactions Amer. Soc. Artificial Internal Organs, vol. XXI, 1975, pp. 620-638.
"A Comparison of Three Ventricles Used for Left Ventricular Bypass in the Calf", by W. O'Bannon et al., Transactions Amer. Soc. Artificial Internal Organs, vol. XXII, 1976, pp. 450-458.
"Complete Left Ventricular Bypass with a Paracorporeal Pump", by W. S. Pierce et al., Reprint from Annals of Surgery, vol. 180, No. 4, Oct. 1974, pp. 418-426.
"Development of Fabrication Techniques for Use of Thermoplastic Polyurethanes in Cardiac Assist and Support Devices", by D. R. Owen et al., Proceedings of The National Technical Conference Society of Plastics Engineering, Nov. 8-10, 1977, Denver, Colorado, pp. 10-15.
"Thrombus Generation Within the Artificial Heart", by D. B. Olsen et al., The Journal of Thoracic & Cardiovascular Surgery, vol. 70, No. 2, Aug. 1975, pp. 248-254.
Donachy James H.
Pierce William S.
Donachy and Pierce
Frinks Ronald L.
Hooker Thomas
LandOfFree
Blood pump and method of pumping blood does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blood pump and method of pumping blood, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blood pump and method of pumping blood will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-532639