Shiley, Inc.

Shiley Laboratories, Inc.

Todor Pavlov

Kenneth Keith Krueger

Francis M Servas

Paul F Zupkas

Steven G Kelly

George Michael Johnson

Badri Gupta

A unitary device for the treatment and collection of blood from two different sources during a surgical procedure comprises a hollow housing made of a rigid, preferably transparent, material, first and second blood inlets in the housing, a first blood treatment element inside the housing comprising a layer of porous defoaming material and a layer of non-woven depth filter material, and a second blood treatment element inside the housing comprising a layer of porous defoaming material and free of any depth filter material. The novel device also includes internal walls for providing two blood flow paths therein, one through the first inlet, the first blood treatment element, a blood collection reservoir defined within the device and a treated blood outlet in the bottom wall of the housing, and the other through the second inlet, the second blood treatment element, the blood collection reservoir and the blood outlet. The latter blood flow path bypasses at least the depth filter material layer of the first blood treatment element. In typical use in an extracorporeal flow circuit, cardiotomy blood is introduced to the first inlet, venous return blood is introduced to the second inlet and the common blood outlet is connected to an extracorporeal blood pump. As a result, passage of the relatively clean venous return blood through a depth filter material is avoided.

Unitary venous return reservoir with cardiotomy filter

Heat exchanger with gas venting means

A tracheostomy tube having an inflatable cuff, an inflating means including an indicating balloon, and a pressure relief valve to prevent over-inflation of the balloon and the cuff are disclosed.

Tracheostomy tube with pressure relief valve

A relief valve having a main passage normally closed with a main valve member and a vent passage normally closed with a vent valve member, the vent valve member being constructed to open the vent passage upon application of a predetermined pressure into the main valve passage to thereby prevent application of greater than said predetermined pressure to the outlet of the valve is disclosed.

Relief valve

Pressure relief valve for a low pressure cuffed tracheostomy tube

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Laguna Niguel, CA, United States of America

Todor Pavlov