Abstract: A cervical transfer catheter (10) for transferring a therapeutic substance to an endocervix or other internal mucosal surfaces of a recipient, the catheter (10) comprising: a catheter body (12) having first and second lumens (14) and (16), the second lumen (16) being adapted, in use, to allow passage and retention of a structure containing the therapeutic substance that will be released slowly and continuously. The catheter (10) also comprises an inflatable balloon (20) provided at a distal end of the first lumen (14), the inflatable balloon (20) being designed to be as small as possible in its inflated condition whilst still being retained in the uterus by virtue of its shape.

Abstract: An embryo transfer catheter (10) is described comprising an outer catheter body (12) having first and second lumens (14, 16). The second lumen (16) is adapted to receive an internal catheter (not shown) with a single lumen which, in use, will allow passage of an embryo or embryo-containing cannula (not shown) into the uterus (18) of the recipient. An inflatable balloon (20) is provided at a distal end of the first lumen (14). The inflatable balloon (20) is designed to be as small as possible in its inflated condition whilst still being retained in the uterus (18). The shape of the balloon (20) is adapted in its inflated state to conform to just the lowest part of the uterus (18).