Interspinous process implant

A method of placing a spinal implant at a treatment site comprising:

• providing a spinal implant in a first closed configuration, said spinal implant comprising:
• a main body having a central bore and a longitudinal axis extending between a proximal end and a distal end;
• a proximal anchor comprising a nut received on an outer surface of the main body;
• a distal anchor comprising:
• a first wing having a first inner end and a first outer end, and a second wing having a second inner end and a second outer end, wherein said first inner end of the first wing is pivotably connected to said second inner end of the second wing at a first pivot point;
• and
• an internal plunger having a proximal end and a distal end, said internal plunger housed within the central bore of the main body, said distal end of the internal plunger pivotably connected to both a proximal end of a first linkage and a proximal end of a second linkage at a second pivot point,
• wherein a distal end of said first linkage is pivotably connected to the distal anchor at a third pivot point located near the first inner end of the first wing, wherein a first distance between the first pivot point and the third pivot point is less than a second distance between the second pivot point and the third pivot point, and a distal end of said second linkage is pivotably connected to the distal anchor at a fourth pivot point located near the second inner of the second wing, wherein a third distance between the first pivot point and the fourth pivot point is less than a fourth distance between the second pivot point and the fourth pivot point;
• and
• placing the spinal implant in a patient at a treatment site;
• and
• sliding the internal plunger distally along the longitudinal axis to (i) pivot the first outer end of the first wing and the second outer end of the second wing distally about the first pivot point and (ii) pivot the first linkage and the second linkage proximally about the second pivot point, to transition the spinal implant from the first closed configuration to a second open configuration.

A spinal implant comprising:

• a main body having a central bore and a longitudinal axis extending between a proximal end and a distal end;
• a proximal anchor comprising a nut having a textured distal surface, said nut received around an outer surface of the main body;
• a distal anchor having a first closed configuration and a second open configuration, said distal anchor comprising:
• a first wing having a first inner end, a first outer end, a first planar top surface, and a first base surface at the first inner end, the first planar top surface extending at an angle of 35 to 45 degrees relative to the first base surface, and
• a second wing having a second inner end, a second outer end, a second planar top surface, and a second base surface, the second planar top surface extending at an angle of 35 to 45 degrees relative to the second base surface,
• wherein said first inner end of the first wing is pivotably connected to said second inner end of the second wing at a first pivot point;
• and
• an internal plunger having a proximal end and a distal end, said internal plunger housed within the central bore of the main body, said distal end of the internal plunger pivotably connected to both a proximal end of a first linkage and a proximal end of a second linkage at a second pivot point,
• wherein a distal end of said first linkage is pivotably connected to the distal anchor at a third pivot point located near the first inner end of the first wing, wherein a first distance between the first pivot point and the third pivot point is less than a second distance between the second pivot point and the third pivot point, and a distal end of said second linkage is pivotably connected to the distal anchor at a fourth pivot point located near the second inner of the second wing, wherein a third distance between the first pivot point and the fourth pivot point is less than a fourth distance between the second pivot point and the fourth pivot point;
• and
• wherein longitudinal distal movement of the internal plunger (i) pivots the first outer end of the first wing and the second outer end of the second wing distally about the first pivot point and (ii) pivots the first linkage and the second linkage proximally about the second pivot point, to transition from the first closed configuration to the second open configuration, and wherein longitudinal proximal movement of the internal plunger (iii) pivots the first wing and the second wing proximally about the first pivot point and (iv) pivots the first linkage and the second linkage distally about the second pivot point, to transition from the second open configuration to the first closed configuration.