The present disclosure relates generally to the field of medical devices for accessing body lumens. In particular, the present disclosure relates to medical devices, systems and methods for enlarging an opening of a body lumen. In an embodiment, a device may include a flexible elongate tube. A distal end of the tube may be configured to access an opening of a body lumen. A plurality of wire lumens may extend from the distal end of the tube toward a proximal end of the tube that are radially offset from and substantially parallel with a longitudinal axis. At least a portion of the plurality of wire lumens may be exposed to an outer surface of the tube along a distal portion. A plurality of wires may each extend along a respective wire lumen. A portion of each wire may extend externally to the wire lumens exposed to the outer surface.

Embodiments include a system comprising a cannula assembly configured for rotational fractional resection (RFR). The cannula assembly includes at least one cannula configured for rotational operation and enclosed in a depth guide configured to control an insertion depth of the at least one cannula. The depth guide includes a vacuum chamber configured to maintain vacuum to evacuate resected tissue generated by the RFR.

A kit for delivering microwave ablative energy to tissue and methods for using the kit are included. The kit includes an access catheter, an implant deployment tool, and a microwave delivery device. The implant deployment tool is configured to be inserted into the access cathether and has an implant disposed therein in a contracted state and being slidable out of a distal opening and expandable into an expanded state. The microwave delivery device is configured to deliver the microwave ablative energy to the tissue and to be advanced through the access catheter and slidably disposable within the implant when the implant is in the expanded state.

A cutting device includes an elongated shaft that extends between a proximal end and a distal end. A distal arm extends from the distal end of the elongated shaft. The distal arm includes an inner surface defining a cavity and an outer surface defining a blunt tip. At least one proximal arm extends from the distal end of the elongated shaft at a position proximal to the distal arm. The at least one proximal arm having an inner surface defines a cavity including a cutting portion configured to cut tissue.

Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. The modulation may be performed by a neuromodulation device (e.g., an energy delivery device).

Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. The modulation may be performed by a neuromodulation device (e.g., an energy delivery device).

System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a distal opening at the distal end of the trocar. The system includes a curved cannula sized to be received in the central channel, the curved cannula comprising a curved distal end configured to be extended outward from the distal opening to generate a curved path extending away from the trocar. The curved cannula has a central passageway having a diameter configured to allow a treatment device to be delivered through the central passageway to a location beyond the curved path.

System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a distal opening at the distal end of the trocar. The system includes a curved cannula sized to be received in the central channel, the curved cannula comprising a curved distal end configured to be extended outward from the distal opening to generate a curved path extending away from the trocar. The curved cannula has a central passageway having a diameter configured to allow a treatment device to be delivered through the central passageway to a location beyond the curved path.

A dilation introducer for orthopedic surgery is provided for minimally invasive access for insertion of an intervertebral implant. The dilation introducer may be used to provide an access position through Kambin's triangle from a posterolateral approach. A first dilator tube with a first longitudinal axis is provided. A second dilator tube may be introduced over the first, advanced along a second longitudinal axis parallel to but offset from the first. A third dilator tube may be introduced over the second, advanced along a third longitudinal axis parallel to but offset from both the first and the second. An access cannula may be introduced over the third dilator tube. With the first, second, and third dilator tubes removed, surgical instruments may pass through the access cannula to operate on an intervertebral disc and/or insert an intervertebral implant.

Example embodiments relate to surgical systems comprising an end-effector assembly and arm assembly. The end-effector assembly may include a first instrument assembly having a first instrument and first instrument driven portion configurable to be driven to move the first instrument relative to a first axis. The arm assembly may include first and second arm assembly bodies, first arm assembly joint portion for joining the first and second arm assembly bodies, first instrument drive assembly, and first arm assembly drive assembly. The first instrument drive assembly may include a first integrated motor and first instrument drive portion controllable by the first integrated motor to drive the first instrument driven portion. The first arm assembly drive assembly may include a second integrated motor and first arm assembly drive portion controllable by the second integrated motor to drive the first arm assembly body to move relative to the second arm assembly body.