Surgical kit for spinal decompression to treat spinal stenosis

A tissue excision system for treating spinal stenosis, comprising:

• an access instrument configured to provide access to an interlaminar region of a patient, comprising:
• a cannulated access portal;
• and
• a needle configured to be inserted through the cannulated access portal to advance the access instrument to the interlaminar region;
• an excision instrument configured to be inserted through the cannulated access portal, the excision instrument comprising:
• a distal end and a proximal end;
• an elongated cutting assembly comprising a cutting region at the distal end that is configured to excise at least one of bone or tissue from the interlaminar region and further comprising:
• a stationary inner tube;
• a solid plunger rod received within the stationary inner tube and configured to slide distally within the stationary inner tube toward the distal end to eject at least one of an excised tissue or an excised bone from the cutting region;
• an orientation control assembly comprising a knob coupled to a circumference of the elongated cutting assembly such that a rotation of the knob causes a corresponding angular orientation of the cutting region;
• and
• a depth control that is adjustable longitudinally along the elongated cutting assembly to control a depth of the cutting region within the patient.

A method for treating spinal stenosis, comprising:

• providing an access instrument comprising:
• an access portal comprising a cannula, the cannula further comprising:
• a shaft with an outer circumference;
• and
• an elongated passage through the shaft;
• providing an excision instrument comprising:
• an elongated cutting assembly comprising a cutting region, comprising:
• a stationary inner tube;
• a solid plunger rod received within the stationary inner tube;
• an orientation control assembly comprising:
• a knob coupled to a circumference of the elongated cutting assembly;
• and
• a trigger coupled to the elongated cutting assembly;
• advancing the access instrument into a patient and to a target area;
• inserting the excision instrument through the elongated passage of the access instrument to the target area;
• rotating the knob to adjust an angular orientation of the cutting region;
• actuating the trigger to excise at least one of tissue or bone at the cutting region;
• and
• sliding the solid plunger rod distally within the stationary inner tube toward a distal end of the excision instrument to eject at least one of an excised tissue or an excised bone from the cutting region.