초록 ▼

The arterial blood filter of this invention is for extra-corporeal bypass during cardio-pulmonary surgery. It has an internal divergent blood flow path from the inlet to smoothly reduce blood flow velocity to permit separation of air bubbles with minimum trauma to blood cells. The upper portion of t

The arterial blood filter of this invention is for extra-corporeal bypass during cardio-pulmonary surgery. It has an internal divergent blood flow path from the inlet to smoothly reduce blood flow velocity to permit separation of air bubbles with minimum trauma to blood cells. The upper portion of the blood filter housing permits collection of air bubbles and permits their withdrawal. The inlet and outlet connections to the filter are both on the bottom to ease draping of the connecting tubes.

대표청구항 ▼

A directed flow bubble trap and arterial blood filter comprising: a housing; inlet means for permitting and controlling the upward inlet flow of arterial blood into said housing to substantially fill said housing, said inlet means including an upwardly divergent, substantially conical flow control c

A directed flow bubble trap and arterial blood filter comprising: a housing; inlet means for permitting and controlling the upward inlet flow of arterial blood into said housing to substantially fill said housing, said inlet means including an upwardly divergent, substantially conical flow control cone for causing flow with a radially outward component at the top of said upwardly divergent flow control cone, said upwardly divergent flow control cone being open to permit generally unobstructed radially outward flow at its larger end for reducing blood velocity so that the blood velocity at the top of said upwardly divergent flow control cone in said housing is lower than in said inlet, said housing top having an outlet therein for the release of air collected within the top of said housing; an arterial blood filter member in said housing, said arterial blood filter member being a corrugated filter medium of woven monofilament screen having between 20 to 60 microns pore size and having first and second sides, said blood filter member being positioned around to surround said flow cone and being secured to said flow cone and to said housing so that said flow cone serves as a support for the upper edge of said filter member so that arterial blood leaving said upwardly divergent flow control cone flows down around said blood filter member and reaches said first side of said arterial blood filter member; and an arterial blood outlet on said housing, said arterial blood outlet being connected to said housing so that it is positioned on the second side of said arterial blood filter member.