Apparatus for collection washing and reinfusion of shed blood
First Claim
1. An apparatus for processing blood from a surgical site on a patient, the apparatus comprising:
- a. a centrifuge, for separating the blood into a plurality of components and isolating at least one of the components, the centrifuge comprisingi. a centrifuge bowl having an inlet port, a floor, a separation chamber, and an outlet port through which fluid exits the centrifuge bowl; and
ii. means for rotating the centrifuge bowl;
b. a receptacle for receiving fluid from the outlet port;
c. a first conduit for conveying blood from the site to the inlet port;
d. a second conduit for conveying fluid from the outlet port to the receptacle; and
e. a vacuum source, coupled to the separation chamber through the interior of the receptacle.
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Accused Products
Abstract
An integrated, vacuum-driven shed blood processing system that collects, dilutes, filters and washes postoperatively shed blood and concentrates red blood cells for reinfusion to the patient. The location of the centrifuge bowl between the surgical site and the vacuum source used to clean the site allows the immediate collection of shed blood in the bowl without an intermediate reservoir or an additional pump. In conjunction with a modified centrifuge bowl having a sealed aperture in its floor that permits reinfusion directly from the bowl without an additional reinfusion bag or reverse pump, this configuration processes blood for reinfusion using fewer steps and components yet without loss of functionality. Dilution of the blood upon its introduction into the system reduces the tendency to coagulate and allows the use of lower bowl rotation speeds. Slower rotation reduces red blood cell damage and lowers power requirements, which improves portability.
127 Citations
14 Claims
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1. An apparatus for processing blood from a surgical site on a patient, the apparatus comprising:
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a. a centrifuge, for separating the blood into a plurality of components and isolating at least one of the components, the centrifuge comprising i. a centrifuge bowl having an inlet port, a floor, a separation chamber, and an outlet port through which fluid exits the centrifuge bowl; and ii. means for rotating the centrifuge bowl; b. a receptacle for receiving fluid from the outlet port; c. a first conduit for conveying blood from the site to the inlet port; d. a second conduit for conveying fluid from the outlet port to the receptacle; and e. a vacuum source, coupled to the separation chamber through the interior of the receptacle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification