Other

Electromedics, Inc.

Rasor Associates, Inc.

Thomas P Sahines

Thomas C Robinson

Robert K Fernandez

Augustus Felix

Sotiris Kitrilakis

Gary D Reeder

Craig S Nevers

Arthur M Bobrove

Timothy Appleby

Klaus J Cross

A blood processing system is described in which blood pressure readings obtained before and after passage of blood aspirated from an operative site through a membrane separator is used by a programmed controller to determine the hematocrit level of the blood and to add saline solution to adjust the hematocrit level to a desired level. The blood processing system contains a distributor cap to distribute wash solution to the inside of a filter to wash out additional blood cellular material within the filter. A precollector may be used remotely from the site of the blood processing system and later joined with the system to withdraw blood contained in the precollector for processing by the blood processing system.

Blood pumping and processing system

A hypodermic needle assembly is described which automatically covers the pointed end of the needle after the assembly is used in order to prevent accidental punctures. A sheath circumscribes the needle and is held a patient's tissue to allow sliding movement of the sheath over the needle pointed end, and preferably locking of the needle within the sheath, as well, when the needle is withdrawn from the patient.

Automatic sheath protection of hypodermic needle

A gas transfer apparatus readily adapted for oxygenating blood includes a housing with a hollow internal chamber having a fiber mat consisting of two sets of intermingled hollow fibers with one set of fibers having micropores formed in the walls thereof and the other set having solid liquid impermeable walls. The housing for the apparatus is designed such that the blood being processed passes substantially uniformly across the entire cross section of the fiber mat whereby a treating gas such as oxygen being directed through the microporous fibers can be diffused into the oxygen deficient blood while excess CO.sub.2 in the blood can cross diffuse into the interior of the fiber and be removed from the apparatus. Simultaneously with the cross diffusion of gas between the microporous fibers and the blood, a thermal conducting fluid such as water is passed through the solid walled fibers to maintain or regulate the temperature of the blood in the apparatus. The microporous and solid walled fibers may be woven in layers which are laminated to form a predetermined mat thickness separated by layers with only parallel fibers of a single set in each layer.

Gas transfer apparatus

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Milpitas, CA, United States of America

Thomas P Sahines