| CPC A61B 17/3468 (2013.01) [A61B 17/3462 (2013.01); A61M 25/0637 (2013.01); A61M 25/0668 (2013.01); A61N 1/372 (2013.01); A61M 2039/229 (2013.01)] | 12 Claims |
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1. An intravascular delivery system configured for efficient delivery of a therapeutic catheter to a target site in a blood vessel of interest, comprising:
a splittable outer member configured by a flexible substantially cylindrically contoured wall forming an elongated outer delivery sheath, said outer delivery sheath defining a sheath lumen having a proximal end, a distal end, and an outer member shaft extending between said proximal end and said distal end, wherein said outer member shaft is configured with a tapered outer tip at said distal end of said sheath lumen and at least one tear seam extending longitudinally along said cylindrically contoured wall of said splittable outer member between said proximal and distal ends of said sheath lumen, wherein said splittable outer member assumes a closed configuration when said at least one tear seam is intact and a split configuration, when said at least one tear seam is opened, wherein said outer member shaft includes a reinforcement structure extending along a length of said outer member shaft between said proximal and distal ends of said sheath lumen thereof, a flexible encapsulating sheath enveloping said outer member shaft, and a tear wire encapsulated in said flexible encapsulating sheath in alignment with said at least one tear seam of said outer member shaft;
an inner member having an elongated body formed by an inner member wall, said inner member wall defining an internal channel extending along the longitudinal axis of said inner member, wherein said inner member is removably received in and extends internally along said sheath lumen of said splittable outer member in a controllable relationship with said outer delivery sheath, said inner member having a proximal end and a tapered distal tip displaceable along a guide wire beyond said distal end of said outer delivery sheath; and
an interconnection mechanism disposed in an operative coupling with said inner member and said splittable outer member and controllably actuated to operate said intravascular delivery system intermittently in an engaged and disengaged mode of operation;
wherein, in said engaged mode of operation, said inner member and splittable outer member of said intravascular delivery system are engaged for a controllable common displacement along the guide wire;
wherein, in said disengaged mode of operation, said inner and outer members are disengaged for displacement of said inner member and said splittable outer member relative one another;
wherein, in said disengaged mode of operation, said splittable outer member is split along said at least one tear seam thereof for removal from said blood vessel of interest,
an inner member hub secured to said proximal end of said inner member;
a splittable outer member hub secured to said proximal end of said sheath lumen of said splittable outer member, said splittable outer member hub having an elongated body configured by an outer member hub wall, a pair of wing members attached to said elongated body and extending in opposite directions therefrom, wherein said splittable outer member hub wall is formed with at least one tear groove extending longitudinally along said splittable outer member hub wall of said elongated body of said splittable outer member hub between proximal and distal ends of said elongated body of said splittable outer member hub, said at least one tear groove of said splittable outer member hub being aligned with said at least one tear seam of said outer delivery sheath of said splittable outer member, wherein said splittable outer member hub assumes a closed configuration when said at least one tear groove is closed, and a split configuration when said at least one tear groove is opened;
wherein said interconnection mechanism is configured by an interrelation between said inner member hub and said splittable outer member hub to prevent or permit a displacement of said inner member relative to said outer member; and
wherein, in said disengaged mode of operation, said outer member hub is split along said at least one tear groove thereof,
wherein, in said disengaged mode of operation, said splittable outer member is split along said at least one tear seam thereof for removal from said blood vessel of interest,
wherein said splittable outer member hub comprise external threads proximal to the pair of wing members, wherein the at least one tear groove extending longitudinally along said splittable outer member hub wall of said elongated body of said splittable outer member hub extends through the external threads,
wherein said inner member hub has an inner member hub elongated body configured with a proximal portion a distal portion, wherein distal portion configured to be at least partially received within said splittable outer member hub,
said system further comprising a rotating threaded collar having internal threads and positioned externally on said distal portion of said elongated body of said inner member hub, and
wherein said external threads of said splittable outer member hub cooperating with a first portion of said internal threads of said rotating threaded collar.
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