Push-pull tightening port for percutaneous circulatory support device repositioning and axial locking, and attachment to sheath hub

A tightening port for use with a hemostasis valve hub of a sheath, the tightening port comprising:

• a gripper configured for engagement with the hemostasis valve hub, the gripper having a proximal end, a distal end, a cylindrical body defining a lumen, and a plurality of protrusions extending from the proximal end, wherein the plurality of protrusions of the gripper comprises at least four protrusions extending from the cylindrical body;
• and
• a base having a cylindrical body and a lumen defined therethrough for receiving a portion of the gripper, and the base has a plurality of engagement features configured for engaging with the plurality of protrusions of the gripper;
• wherein the lumen of the gripper has an initial diameter prior to engagement with the base, and the lumen of the gripper has a compressed diameter after engagement with the base, wherein the compressed diameter is less than the initial diameter,
• wherein the gripper comprises one or more posts configured for engaging with the hemostasis valve hub;
• and
• wherein each of the protrusions of the gripper has a block extending radially outward from the protrusion.

A delivery system for introducing at least one medical device into a blood vessel, the delivery system comprising:

• a sheath configured for insertion into the blood vessel, the sheath having a proximal end and a distal end;
• a hemostasis valve hub having a proximal end and a distal end and the distal end configured for attachment with the proximal end of the sheath;
• and
• a tightening port configured for attachment with the proximal end of the hemostasis valve hub, the tightening port comprising:
• a gripper configured for engagement with the hemostasis valve, the gripper having a proximal end, a distal end, a cylindrical body defining a lumen, and a plurality of protrusions extending from the proximal end;
• and
• a base having a cylindrical body and a lumen defined therethrough for receiving a portion of the gripper, and the base has a plurality of engagement features configured for engaging with the plurality of protrusions of the gripper;
• and
• wherein the lumen of the gripper has an initial diameter prior to engagement with the base, and the lumen of the gripper has a compressed diameter after engagement with the base, wherein the compressed diameter is less than the initial diameter;
• wherein the gripper comprises a plurality of posts configured for engaging with the hemostasis valve hub;
• and
• wherein the plurality of engagement features of the base comprises a plurality of protrusions extending radially inwardly from an outer circumference of the base.