초록 ▼

The present invention provides a pumping chamber to be constructed as follows: A collapsible tubing is attached to an inlet fitting and to and outlet fitting to transport a biologic fluid such as blood therethrough. An outer tubing surrounds the collapsible tubing and is secured to the outer surface

The present invention provides a pumping chamber to be constructed as follows: A collapsible tubing is attached to an inlet fitting and to and outlet fitting to transport a biologic fluid such as blood therethrough. An outer tubing surrounds the collapsible tubing and is secured to the outer surface of the inlet fitting and to the outer surface of the outlet fitting, forming a chamber thereby. At least a duality of ports defining passageways through the wall of the outer tubing permits communication of the chamber with ambient conditions outside the chamber. The ports are designed to accept such devices as pressure gauges, alarm systems and devices to regulate intrachamber pressure, to observe arterial pressure, and to regulate collapse and occlusion of collapsible tubing in response to inadequate blood volumes.

대표청구항 ▼

A pumping chamber for an extracorporeal pumping device comprising: a. a collapsible tubing attached to an inlet means and to an outlet means, said collapsible tubing being capable of transporting blood from said inlet to said outlet; b. an outer tubing surrounding said collapsible tubing, said outer

A pumping chamber for an extracorporeal pumping device comprising: a. a collapsible tubing attached to an inlet means and to an outlet means, said collapsible tubing being capable of transporting blood from said inlet to said outlet; b. an outer tubing surrounding said collapsible tubing, said outer tubing being secured to the outermost boundary of said inlet means and said outlet means and defining a chamber wherein said collapsible tubing is longitudinally disposed therethrough; c. at least a duality of ports located in downstream relation one to the other, said ports being situated within said outer tubing and defining a passsageway therethrough; and d. at least a pressure modifying device effective for producing positive or negative pressure being disposed in on one of said ports and such other devices disposed within the remaining ports.