Articulated instruments that include tools for disrupting and/or distracting tissue, and methods of using the same.

A lateral disc cutter for morcellating and decorticating tissue of an intervertebral disc from between adjacent vertebrae. The device can be arranged in a retracted configuration for insertion via an access tube, and in an extended configuration for cutting of tissue in the target region. The blades may be extended to contact the concave endplate in an orientation that is substantially parallel to a mid-plane of the intervertebral disc. Blades of the device may be configured with a convex profile that substantially conforms to the concave shape of the endplate for enhanced contact length between the blade and the endplate. In some embodiments, the blades are configured for removal and replacement without need for tools, with the blades selectively determining a maximum displacement width of the morecellator assembly.

A surgical device may include a tube and a cutting blade movable between a first position in which the cutting blade is concealed inside the tube and a second position in which the cutting blade is exposed through a sidewall of the tube.

A method for performing percutaneous spinal interbody fusion on a spine of a patient can include inserting without direct visualization a neuro-monitoring dilating probe into the patient, performing neuro-monitoring via the neuro-monitoring dilating probe, advancing the neuro-monitoring dilating probe into a disc space, passing a second dilator over the neuro-monitoring dilating probe, and advancing the second dilator into the disc space. A kit for performing percutaneous spinal interbody fusion can include a neuro-monitoring dilating probe, a second dilator, a tissue removal tool, an access portal comprising an adjustable depth stop, and a discectomy verification device.

The present disclosure relates to an orthopedic instrument. The orthopedic instrument includes an elongated hollow shaft having a proximal end and a distal end. The orthopedic instrument also includes a rod having a proximal end and a distal end. The rod is positioned at least partially within a lumen of the elongated hollow shaft. The orthopedic instrument also includes a cutting head having a proximal end and a distal end, wherein the proximal end of the cutting head is coupled to the distal end of the rod. The cutting head is rotatably coupled to the distal end of the elongated hollow shaft between the proximal end of the cutting head and the distal end of the cutting head. A movement of the rod within the lumen of the elongated hollow shaft in a distal direction causes cutting head to transition from a straight configuration to an angled configuration.

A surgical device for intraoperative angle measurements during surgery. The surgical device includes a shaft having a bone probe configured to remain in contact with cortical bone of the patient while a user orients the shaft to a desired orientation. The device includes a housing having an electronic circuit configured to measure an orientation angle. The electronic circuit may include: an input device configured to receive user input data; a measurement circuit configured to measure a change in orientation of the shaft in relation to a reference axis; a control circuit coupled to the input device and measurement circuit and configured to determine the orientation angle of the shaft relative to the reference axis; and an output device configured to communicate the orientation angle to the user. The device includes a power supply configured to provide power to the electronic circuit.

Disclosed are radially expanding debridement tools configured to pass through an access channel present in a first tissue of a living being, expand radially, and create a void in a second tissue of the living being upon being advanced distally through the access channel and into the second tissue while being rotated, wherein the shape of the void comprises at least one step. Further disclosed are debridement systems and methods of treating tissue defects in living beings.

A surgical reamer and a method of reaming a bone using a surgical reamer. The reamer has a distal part comprising a proximal end coupleable to a surgical rotational driver; a distal end; a rotational axis extending between the proximal end and the distal end; and a cutting surface located between the proximal end and the distal end. The reamer also has a proximal part comprising a proximal end coupleable to a surgical rotational driver; a distal end; a rotational axis extending between the proximal end and the distal end; a cutting surface located between the proximal end and the distal end; and a cavity extending proximally from the distal end for receiving the proximal end of the distal part. An inner surface of the cavity is shaped to allow the proximal part to be tilted with respect to the distal part during rotation of the proximal part.

A system or kit includes a rotating tool and a guide. The rotating tool includes an elongated shaft with at least one cutting edge. The rotating tool is configured to remove bone from a patient. The guide includes a body comprising a contact surface and a guide channel. The contact surface is configured to position the guide relative to a patient or an implant. The guide channel is configured to receive the elongated shaft and to allow the cutting edge to be swept along a path. The path corresponds to a portion of the bone to be removed. A method of removing an implant includes forming an incision in a patient. The method further includes inserting a rotating tool into the incision such that a cutting edge of the rotating tool is adjacent to a surface of the implant. The method further includes sweeping the cutting edge along a first path adjacent to the surface of the implant to remove bone adjacent to the implant.

A vertebral endplate preparation (decorticating) tool has height adjustable blades at a distal end of a shaft assembly for decorticating/shaving vertebral endplate material from spinal vertebrae, translates axial movement of a control rod of the shaft assembly of the vertebral endplate preparation tool with height adjustable blades into radial blade height change (extension and retraction) through a controller of a handle assembly. The blades may also be configured for collecting and removing shaved vertebral endplate material. The blades controllably move outward radially from the distal end of the shaft assembly and controllably move inward radially into the distal end of the shaft assembly upon manipulation of the controller. Radial blade extension and retraction from the distal end may be accomplished via mutual angled dovetail features of the blades and the distal end, or via pins of the distal end of the shaft assembly situated in angled slots of the blades.