Abstract: A medical device is disclosed. The medical device may include an elongate member having a proximal end and a distal end an expandable end effector assembly extending distally from the distal end of the elongate member. The end effector assembly may include a plurality of end effector units each having an injector for simultaneously delivering material into tissue.

Abstract: A medical device is disclosed. The medical device may include an elongate member having a proximal end and a distal end an expandable end effector assembly extending distally from the distal end of the elongate member. The end effector assembly may include a plurality of end effector units each having an injector for simultaneously delivering material into tissue.

Abstract: According to an embodiment of the present disclosure, a medical device for injecting one or more substances may include a proximal handle assembly. The proximal handle assembly may include a housing, a rotatable member rotatably coupled to the housing, and a port configured to receive one or more substances. The medical device may also include an inner member coupled to the rotatable member and extending distal to the proximal handle assembly. The medical device may also include an outer member coupled to the housing, surrounding at least a portion of the inner member, and extending distal to the proximal handle assembly. The medical device may also include a helical needle coupled to the inner member and extending distal to the inner member.

Abstract: A blood pump having rotor and/or stator touch down zones to prevent pump failure or hemolysis which can occur if the rotor comes into contact with the stator due to power failure or mechanical shock. The touch down zones can include forming, or coating, portions of adjacent surfaces of the stator and rotor which can come into contact if a rotor touch down occurs. The materials used to form or coat the touch down zones can have properties which ensure that no consequential damage to the contacting surfaces occurs.

Abstract: A blood pump having rotor and/or stator touch down zones to prevent pump failure or hemolysis which can occur if the rotor comes into contact with the stator due to power failure or mechanical shock. The touch down zones can include forming, or coating, portions of adjacent surfaces of the stator and rotor which can come into contact if a rotor touch down occurs. The materials used to form or coat the touch down zones can have properties which ensure that no consequential damage to the contacting surfaces occurs.