Rectal catheter

专利名称：Rectal catheter发明人：Eugene L. Heyden申请号：US06/858799申请日：19860502公开号：US04772260A公开日：19880920

摘要：Particularly a rectal catheter for the removal of fluent material from the rectalcavity. The rectal catheter (18) comprises an elongated tubular member (20) forwardlyinsertable within the rectal cavity. The tubular member includes a pair of opposingeyelets (28a and 28b) in the vicinity of a forward end (22) which lead to a centrally opendrainage lumen (26), and also includes a ventilation lumen (32) substantially coextensive inlength therewith. The ventilation lumen receives atmospheric air from a take-off tube(40) depending from the rearward portion of the tubular member and directs

atmospheric air toward the forward end of the tubular member when suction is appliedto the drainage lumen. Accordingly, the ventilation lumen is terminated at the forwardend of the tubular member and presents a venting aperture (36) radially and inwardlyoffset from the ventilation lumen, positioned in the vicinity of the base of the eyelets, anddirected toward the direction of the rearward end (24) of the tubular member. Whensuction is applied to the catheter, a directional reversal of atmospheric air is seen as it isconducted through the ventilation lumen in a forward direction, drawn through theventing aperture and into the drainage lumen, and directed toward the suction sourceand rearward end of the tubular member. A novel, conically shaped retaining member(44, 44', and 44\") is described and contemplated as a particularly suitable alternative to

an expansible cuff (76).

申请人：HEYDEN; EUGENE L.

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