Clot retrieval devices

A clot retrieval device comprising:

• a shaft extending between a proximal end and a distal end;
• a ball coupled to a distal portion of the shaft;
• at least three independent, separately spaced clot engaging ring elements, the at least three independent clot engaging ring elements comprising zigzag struts connected through one or more connectors, each clot engaging ring element being expandable between a retracted delivery configuration and an expanded deployed configuration,
• wherein in the retracted delivery configuration, the at least three independent clot engaging ring elements radially surround the distal portion of the shaft;
• and
• wherein to move to the expanded deployed configuration from the retracted delivery configuration, the shaft and ball are axially translated proximally thereby applying a radial force that biases the at least three independent clot engaging ring elements to expand to the deployed configuration.

A clot retrieval device comprising:

• a shaft extending between a proximal end and a distal end;
• a ball coupled to a distal portion of the shaft;
• a tube, wherein the shaft is axially translatable within a lumen of the tube;
• and
• a plurality of independent, separately spaced clot engaging ring elements, the independent clot engaging ring elements comprising struts connected through one or more connectors, each clot engaging ring element being expandable between a retracted delivery configuration, a partially deployed configuration, and an expanded deployed configuration,
• wherein each strut comprises a hook lock with a first lock and a second lock, wherein each hook lock holds the neighboring hook lock to restrain the device in the retracted delivery configuration;
• wherein in the retracted delivery configuration, the plurality of independent clot engaging ring elements radially surround the distal portion of the shaft, and
• wherein in the partially deployed configuration, a distal end of at least one of the independent clot engaging ring elements tapers radially outwardly of the shaft;
• wherein to move to the expanded deployed configuration from the retracted delivery configuration, the shaft and ball are axially translated proximally thereby applying a radial force that biases the plurality of independent clot engaging ring elements to expand to the deployed configuration.