Surgery – Cardiac augmentation
Patent
1994-04-15
2000-04-04
Getzow, Scott M.
Surgery
Cardiac augmentation
A61F 200
Patent
active
060454962
ABSTRACT:
The present invention pertains to a circulatory system, such as a circulatory assist system for a patient. The system comprises a blood pump having tubing fluidically communicating with a person's blood vessel. The blood pump can be, for instance, a centrifugal blood pump but is not limited thereto. The system also comprises an occluder device for controlling flow of the blood pump. The occluder device is in contact with the tubing of the blood pump. The occluder device can be incorporated into an anti-kink sheath over the outlet graft tubing of the blood pump. Preferably, the system comprises control means for actuating the occluder device when the blood pump malfunctions. In this manner, potentially fatal retrograde blood due to pump failure is automatically prevented. In a preferred embodiment, the occluder device comprises a cylindrical tube and a bladder mechanism connected to the inside surface of the tube. The bladder mechanism preferably comprises a bladder and means for inflating the bladder. The inflating means preferably comprises a bladder pump having a tube in fluidic communication with the bladder. The bladder can be of a variety of constructions in the tube. The bladder can cover all or a portion of the inner surface of the tube. Also, two bladders can oppose each other, in a non-overlapping manner, within the tube. Alternatively, the bladder can cover the entire 360.degree. of the inner surface. In this manner, as the bladder is inflated, the orifice closes with decreasing diameter, much like a natural biological valve. The occluder device could be rapidly inflated and deflated for applications as a valve either internally or externally. This would transform the normal steady flow output of a blood pump to a pulsatile output.
REFERENCES:
patent: 3538917 (1970-11-01), Selker
patent: 4015590 (1977-04-01), Normann
patent: 4135253 (1979-01-01), Reich et al.
patent: 4256094 (1981-03-01), Kapp et al.
patent: 4705517 (1987-11-01), DiPisa, Jr.
patent: 5057118 (1991-10-01), Picha
patent: 5071411 (1991-12-01), Hillstead
patent: 5074869 (1991-12-01), Daicoff
patent: 5152770 (1992-10-01), Bengmark et al.
patent: 5267940 (1993-12-01), Moulder
patent: 5443504 (1995-08-01), Hill
Asaio Journal, vol. 39, No. 4, Oct. 1, 1993, pp. 825-827, Kolff, W. J.: "The Dawn of Counterpulsation Muscle and Pneumatic Powered LVADs".
"Vascular Occluders" by IVM (In Vivo Metric).
"Implantable Electrical Left Ventricular Assist System: Bridge to Transplantation and the Future" by Portner et al., The Society of Thoracic Surgeons, pp. 141-150, 1989.
"Artificial Heart 2", Proceedings of the 2nd International Symposium on Artificial Heart and Assist Device, 1988, pp. 89-97.
"The Rationale for Skeletal-Muscle-Powered Counterpulsation Devices: An Overview", Journal of Cardiac Surgery, vol. 1, No. 4, 1986, pp. 385-392.
Clark Richard E.
Pacella John J.
Allegheny-Singer Research Institute
Getzow Scott M.
Schwartz Ansel M.
LandOfFree
Occluder device and method of making does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Occluder device and method of making, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Occluder device and method of making will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-360440