초록 ▼

This connection system has particular application to releasably securing a flexible elastic catheter to a rigid portal outlet stem received in the catheter lumen. The system includes a radial enlargement on the outlet stem and a retainer sleeve that slidably encircles the stem. The sleeve is slidabl

This connection system has particular application to releasably securing a flexible elastic catheter to a rigid portal outlet stem received in the catheter lumen. The system includes a radial enlargement on the outlet stem and a retainer sleeve that slidably encircles the stem. The sleeve is slidable along the stem between a clamping position wherein it tightly engages around the stem enlargement and the segment of catheter encircling same at a circular contact surface and a release position wherein it is spaced from the catheter segment. The system assures a secure, fluid-tight connection of the catheter to the stem and provides strain relief for the catheter.

대표청구항 ▼

Connection apparatus comprising A. a relatively rigid elongated stem, said stem having a free end, an opposite end and means defining an enlargement on the exterior surface of the stem at a selected location between said ends; B. a flexible elastic tube having a lumen for elastically receiving a len

Connection apparatus comprising A. a relatively rigid elongated stem, said stem having a free end, an opposite end and means defining an enlargement on the exterior surface of the stem at a selected location between said ends; B. a flexible elastic tube having a lumen for elastically receiving a lengthwise segment of said stem including said enlargement thereof, said enlargement having a maximum diameter appreciably larger than that of the lumen so that when said stem segment is received in the lumen, said tube is stretched conformingly around said stem enlargement; and C. tubular retainer means slidably received on said stem between said tube opposite end and said enlargement, said retainer means including radially inwardly extending rigid flange means at or near a distal end of said retainer means that faces said enlargement, said flange means having a fixed diameter that is less than the maximum diameter of said stem segment plus twice the wall thickness of said tube when engaged elastically on said stem segment so that when said stem segment is received in the tube lumen and said retainer means are slid toward the free end of said stem, said flange means compressively engage the elastically stretched wall of said tube at a contact surface that encircles a segment of said enlargement.