Catheter having movable tubular structure and proximal stopper

A catheter comprising:

• an inner tubular member having a proximal end portion, a distal end portion and an exterior surface, the inner tubular member further having a guidewire lumen and a fluid lumen defined therein, the fluid lumen having a fluid flow port defined by the exterior surface along the distal end portion of the inner tubular member;
• an outer tubular member movable relative to the inner tubular member, the outer tubular member having a proximal end, a distal end and an interior surface directed toward the exterior surface of the inner tubular member;
• a first tubular structure moveable relative to the inner tubular member, coupled to the outer tubular member, and disposed at the proximal end of the outer tubular member;
• a second tubular structure moveable relative to the inner tubular member, coupled to the outer tubular member, and disposed at the distal end of the outer tubular member;
• a distal sheath coupled to the outer tubular member by the second tubular member, the distal sheath movable relative the inner tubular member by movement of the outer tubular member, wherein the distal sheath has an outer cross dimension less than an outer cross dimension of the outer tubular member;
• a proximal seal extending from the interior surface of the outer tubular member toward the exterior surface of the inner tubular member, the proximal seal located proximal to the fluid flow port;
• a distal seal extending from the exterior surface of the inner tubular member toward the interior surface of the outer tubular member, the distal seal located distal to the fluid flow port;
• and
• a pressure chamber defined by the proximal seal, the distal seal, the exterior surface of the inner tubular member, and the interior surface of the outer tubular member, the pressure chamber disposed proximal to the second tubular structure and in fluid communication with the fluid flow port, wherein fluid introduced through the fluid flow port and into the pressure chamber applies a force on the proximal seal to urge the outer tubular member, the first tubular structure, and the second tubular structure in the proximal direction.

A catheter comprising:

• an inner tubular member having a proximal end portion, a distal end portion and an exterior surface, the inner tubular member further having a guidewire lumen defined therein;
• an outer tubular member movable relative to the inner tubular member, the outer tubular member having a proximal end, a distal end and an interior surface directed toward the exterior surface of the inner tubular member;
• a medical device disposed about the distal end portion of the inner tubular member, the medical device having a longitudinal length dimension;
• a proximal tubular structure moveable relative to the inner tubular member and a distal tubular structure moveable relative to the inner tubular member, wherein each of the proximal and distal tubular structures is coupled to the outer tubular member;
• a distal sheath coupled to the outer tubular member by the distal tubular structure, wherein the distal sheath has an outer cross dimension less than an outer cross dimension of the outer tubular member, wherein the distal sheath is disposed about the medical device and movable relative the inner tubular member by movement of the outer tubular member in the proximal direction to deploy the medical device from the inner tubular member;
• a pressure chamber defined between the proximal and distal tubular structures;
• and
• a proximal stopper having a distal end and disposed proximal to a proximal end of at least one of the proximal and distal tubular structures, the distal end of the proximal stopper being spaced from the proximal end of the at least one of the proximal and distal tubular structures at least the longitudinal length dimension of the medical device, wherein the outer tubular member and the proximal tubular structure are movable in a proximal direction up to engagement of the proximal stopper to deploy the medical device from the inner tubular member.

A catheter comprising:

• an inner tubular member having a proximal end portion, a distal end portion and an exterior surface, the inner tubular member further having a guidewire lumen defined therein;
• an outer tubular member movable relative to the inner tubular member, the outer tubular member having a proximal end, a distal end and an interior surface directed toward the exterior surface of the inner tubular member;
• a medical device disposed about the distal end portion of the inner tubular member, the medical device having a longitudinal length dimension;
• a proximal tubular structure moveable relative to the inner tubular member and a distal tubular structure moveable relative to the inner tubular member, wherein each of the proximal and distal tubular structures is coupled to the outer tubular member;
• a distal sheath coupled to the outer tubular member by the distal tubular structure, wherein the distal sheath has an outer cross dimension less than an outer cross dimension of the outer tubular member, wherein the distal sheath comprises a suitable hoop strength and a suitable flexibility to cover and secure the medical device on the inner tubular member;
• a pressure chamber defined between the proximal and distal tubular structures;
• and
• a proximal stopper having a distal end and disposed proximal to a proximal end of at least one of the proximal and distal tubular structures, the distal end of the proximal stopper being spaced from the proximal end of the at least one of the proximal and distal tubular structures at least the longitudinal length dimension of the medical device, wherein the outer tubular member and the proximal tubular structure are movable in a proximal direction up to engagement of the proximal stopper to deploy the medical device from the inner tubular member.