Seal for catheter assembly with dilation and occlusion balloon

Abstract

Abstract A catheter assembly for the treatment of a vessel carrying body fluid, comprising an inner first occlusion catheter (4), having a first tubular shaft (5) with a proximal end (6) and a distal end (7), a distal occlusion balloon (8) disposed at the distal end (7) of the first tubular shaft (5) and an inflation lumen (9) extending through the first tubular shaft (5) between a proximal entry (10) at the proximal end (6) and a distal exit (11) inside the distal occlusion balloon (8), and an outer treatment catheter (15,22,15'), having a second tubular shaft (16) with a central lumen (17) extending therethrough for coaxial reception of the first occlusion catheter (4), and being longitudinally displaceable with respect to the first occlusion catheter (4), further comprises a seal (21) for the proximal entry (10) of the inflation lumen (9), having an outside dimension small enough to fit within the central lumen (17) for advancing, resp. withdrawing, a treatment catheter (15,22,15') proximally onto, resp. from, the sealed first occlusion catheter (4), treatment catheters (15,22,15') are exchangeable while the distal occlusion balloon (8) is maintained in its inflated condition.

Inventors

• 👤 Jacques Théron

Bibliographic Details