Device for unblocking an occluded vessel, and a method for unblocking an occluded vessel

A method for unblocking an occluded vessel at a remote site having an occlusion therein, the method comprising:

• urging a first elongated member through a lumen, the first elongated member extending from a proximal end to a distal end and terminating in a distal leading portion adjacent the distal end thereof and having an elongated bore extending longitudinally therethrough from the proximal end to the distal end and through the distal leading portion, the portion of the bore extending through the distal leading portion being internally threaded,
• locating the distal leading portion of the first member adjacent the occlusion,
• anchoring the first member by an anchoring means located on the first member with the leading portion of the first member adjacent the occlusion,
• locating a distal leading portion of an elongated second member in the bore extending through the first member, the second elongated member extending from a proximal end to a distal end adjacent the distal leading portion of the second member, the distal leading portion of the second member being externally threaded and terminating in a distal tip,
• urging the second member through the bore extending through the first member for urging the distal leading portion of the second member therethrough from the proximal end of the first member to the distal end thereof,
• engaging the external threads of the distal leading portion of the second member with the internal threads of the distal leading portion of the first member,
• rotating the second member within the bore of the first member so that the external threads of the distal leading portion of the second member co-operate with the internal threads of the distal leading portion of the first member for urging the second member off the anchored first member to urge the distal tip of the distal leading portion of the second member into engagement with the occlusion.

A device for remotely forming one of an opening and a bore through one of a medium within a vessel, a medium separating two vessels and a medium forming a vessel, the device comprising:

• a first elongated member for passing through a lumen to the medium, the first member extending from a proximal end to a distal end and terminating in a distal leading portion adjacent the distal end thereof, and having an elongated bore extending longitudinally therethrough from the proximal end to the distal end and through the distal leading portion, the portion of the bore extending through the distal leading portion being internally threaded,
• an anchoring means located on the first member for anchoring the first member with the distal leading portion thereof adjacent the medium, and
• a second elongated member extending from a proximal end to a distal end and terminating in a distal leading portion, the distal leading portion of the second member terminating in a distal tip for urging through the medium to form the one of the opening and the bore therethrough, the distal leading portion of the second member being urgeable through the bore extending through the first member from the proximal end of the first member to the distal end and through the distal leading portion of the first member, and the distal leading portion of the second member being externally threaded, the external threads on the distal leading portion of the second member being engageable with the internal threads of the bore extending through the distal leading portion of the first member, so that rotation of the second member within the bore of the first member urges the distal leading portion of the second member off the anchored first member to in turn urge the distal tip of the second member into engagement with the medium when the first member is anchored by the anchoring means with the distal leading portion of the first member adjacent the medium.

A method for remotely forming one of an opening and a bore through one of a medium within a vessel, a medium separating two vessels and a medium forming a vessel, the method comprising:

• urging a first elongated member through a lumen, the first elongated member extending from a proximal end to a distal end and terminating in a distal leading portion adjacent the distal end thereof and having an elongated bore extending longitudinally therethrough from the proximal end to the distal end and through the distal leading portion, the portion of the bore extending through the distal leading portion being internally threaded,
• locating the distal leading portion of the first member adjacent the medium,
• anchoring the first member by an anchoring means located on the first member with the distal leading portion of the first member adjacent the medium,
• locating a distal leading portion of an elongated second member in the bore extending through the first member, the second elongated member extending from a proximal end to a distal end adjacent the distal leading portion of the second member, the distal leading portion of the second member being externally threaded and terminating in a distal tip,
• urging the second member through the bore extending through the first member for urging the distal leading portion of the second member therethrough from the proximal end of the first member to the distal end thereof,
• engaging the external threads of the distal leading portion of the second member with the internal threads of the distal leading portion of the first member,
• rotating the second member within the bore of the first member so that the external threads of the distal leading portion of the second member co-operate with the internal threads of the distal leading portion of the first member for urging the second member off the anchored first member to urge the distal tip of the distal leading portion of the second member into engagement with the membrane.