Schill Enterprises, Inc.

David M Schill

Joseph G Schill

Robert A Schill, Jr

A variable volume cell saver bowl to centrifuge blood for collection of red blood cells therefrom. The variable volume cell saver bowl is designed to vary the interior processing volume within the bowl to accommodate blood collections of various volumes in order to use the entire recovered volume of blood. The bowl includes generally an outer shell and an inner shell. The inner shell is disposed concentrically within the outer shell and defines a frusto-conical configuration similar to that of the outer shell first side wall. A piston head is secured to the inner shell lower end wall via at least one spacer. Rotation is imparted on the piston shaft or outer shell in order to rotate the bowl to create centrifugal force within the bowl. A linear displacement device is journalled to the distal end of the piston shaft in order to move the inner shell toward either the top or bottom end wall of the outer shell, thus reducing or increasing the interior processing volume within the bowl. In one embodiment of the bowl, the inner and outer shells are each configured with an upper end defining a cylindrical configuration. An upper seal is provided in this embodiment to prevent the collection of fluid within the upper end, thereby forcing substantially all of the blood to be processed into centrifugal separation.

Variable volume cell saver bowl

A heart and lung support assembly for extracorporeal support of a heart and one or both associated lungs, using the lungs of the donor as oxygenators. The heart and lung support assembly is controlled by an automated feedback control system to monitor and control various attributes of the heart, lungs, and blood, such that the heart and lungs may be stabilized for an extended period of time in an extracorporeal state. The heart and lung support assembly includes generally a housing, a chest cavity actuator assembly, a blood pressure controller assembly, and an automated monitor and feedback control system. The housing is provided for receiving the heart, lungs, and trachea after being removed from the donor patient as a unit. The chest cavity actuator assembly is carried on the exterior of the housing and is provided for simulating normal inhaling and exhaling by the donor lungs. The blood pressure controller assembly is carried by the housing and includes a fluid circuit for the circulation of blood through the heart and lungs to simulate the normal circulation of blood and to provide a means for monitoring the composition and controlling the flow of the blood. The automated monitor and feedback control system includes an arterial cell for detecting at least the partial pressure of oxygen, the partial pressure of carbon dioxide, and pH levels in blood as the blood passes therethrough. A plurality of blood pressure detectors is provided for measuring the various pressures of interest.

Heart and lung support assembly

A variable volume cell saver bowl for to centrifuge blood for collection of red blood cells therefrom. The variable volume cell saver bowl is designed to vary the volume within the bowl to accommodate blood collections of various volumes in order to use the entire recovered volume of blood. The bowl includes generally an outer shell and an inner shell. The outer shell defines integrally formed first and second side walls, the first side wall having a frusto-conical configuration and the second side wall having a cylindrical configuration extending coaxially away from the larger diameter end of the first side wall. The inner shell is disposed concentrically within the outer shell and defines a frusto-conical configuration similar to that of the outer shell first side wall. A centrally disposed hollow core is carried within the inner shell such that the inner shell defines a substantially toroidal configuration having a trapezoidal cross-section. The inlet portion of an inlet/outlet coupling is directed through the hollow core of the inner shell and eventually to the upper end of the outer shell and through the outlet side of the coupling. A piston head is secured to the inner shell lower end wall via at least one spacer. Rotation is imparted on the piston shall or outer shell in order to rotate the bowl to create centrifugal force within the bowl. A linear displacement device is journalled to the distal end of the piston shaft in order to move the inner shell toward either the top or bottom end wall of the outer shell, thus reducing or increasing the volume within the bowl.

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Knoxville, TN, United States of America

David M Schill