Surgery – Blood drawn and replaced or treated and returned to body
Patent
1986-11-07
1988-09-20
Yasko, J.
Surgery
Blood drawn and replaced or treated and returned to body
604 49, 604119, 604250, 604319, 128767, A61M 3700
Patent
active
047722568
ABSTRACT:
The present invention is directed to improved methods and apparatus for the collection of blood, which are particularly useful for autotransfusion purposes. The apparatus includes an upper reservoir wherein the collected blood enters the device. A lower container is placed in fluid communication with the upper reservoir. Disposed within the interior of the container is a conventional blood bag which is in turn placed in fluid communication with the upper reservoir. The upper reservoir has two external connections. The first connection is for receiving blood from the patient. The second external connection places the upper reservoir in communication with a source of vacuum. In one embodiment of the present invention a filtering structure is disposed within the upper reservoir and is connected directly to the inlet connection from the patient. The filtering mechanism provides for early debubbling of the blood flowing into the device and also filters out any emboli or cell masses which may have developed in the collection process. In one embodiment of the invention, the apparatus described above is combined with an air-blood separator to form a collection system. This system is particularly adaptable for use in the surgical setting in that it can operate at high vacuum while minimizing hemolysis. This is accomplished by early separation of air from the blood as the blood is collected.
The lower container and the interior of the blood bag are placed in communication with the vacuum source of the reservoir. As a result, there is a pressure equalizing feature inherent within the device. This allows the blood to continue to flow through the device into the blood bag without extending or opening the blood bag. As a result, there is minimal air-blood interface as the blood enters the blood bag.
REFERENCES:
patent: 3680560 (1972-08-01), Pannier, Jr. et al.
patent: 3685517 (1972-08-01), Reynolds et al.
patent: 3704709 (1972-12-01), Sorenson et al.
patent: 3849071 (1974-11-01), Kayser
patent: 3863634 (1975-02-01), Reynolds et al.
patent: 3866608 (1975-02-01), Reynolds et al.
patent: 4004590 (1977-01-01), Muriot
patent: 4006745 (1977-02-01), Sorenson et al.
patent: 4014329 (1977-03-01), Welch et al.
patent: 4047526 (1977-09-01), Reynolds et al.
patent: 4424053 (1984-01-01), Kurtz et al.
patent: 4428743 (1984-01-01), Heck
patent: 4430084 (1984-02-01), Deaton
patent: 4435170 (1984-03-01), Laszczower
patent: 4443220 (1984-04-01), Hauer et al.
patent: 4493705 (1985-01-01), Gordon et al.
patent: 4500308 (1985-02-01), Kurtz et al.
patent: 4540406 (1985-09-01), Miles
patent: 4547186 (1985-10-01), Bartlett
patent: 4643713 (1987-02-01), Viitala
Council on Scientific Affairs, "Autologous Blood Transfusion," 256 JAMA, No. 17, (Nov. 1986).
Schaff et al., "Routine Use of Autotransfusion Following Cardiac Surgery: Experience in 700 Patients," 27 Annals of Thoractic Surgery, 493 (Jun. 1979).
Thurer et al., "Autotransfusion Following Cardiac Operations: A Randomized, Prosepctive Study," 27 Annals of Thoractic Surgery, 500 (Jun. 1979).
Bell, "The Hematology of Autotransfusion," 84 Surgery, 695 (Nov. 1978).
Hower, "Autotransfusions," 300 New England Journal of Medicine at 1276 (May 1979).
Cordell et al., "An Appraisal of Blood Salvage Techniques in Vascular and Cardiac Operations," 31 Annals of Thoractic Surgery, 421 (May 1981).
Voegele et al., "An Improved Method for Collection of Shed Mediastinal Blood for Autotransfusion," 32 Annals of Thoractic Surgery, 471.
Johnson et al., "The Efficacy of Postoperative Autotransfusion in Patients Undergoing Cardiac Operations," 36 Annals of Thoractic Surgery, 173 (Aug. 1983).
"Pleur-Evac Autotransfusion System" Product Brochure.
Lane Perry L.
Wallace William D.
Costantino Mario
Lantech Inc.
Yasko J.
LandOfFree
Methods and apparatus for autotransfusion of 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 Methods and apparatus for autotransfusion of blood, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for autotransfusion of blood will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1746155