Systems and methods are described for correcting sagittal imbalance in a spine including instruments for performing the controlled release of the anterior longitudinal ligament through a lateral access corridor and hyper-lordotic lateral implants.

The invention provides a tissue cutting device comprising a handle, a first blade, and a second blade. The second blade is coupled to the handle. The second blade is rotatable relative to the first blade such that the second blade is configured to rotate between a first position and a second position. The second blade is in a same plane as the first blade when the second blade is in the first position. The second blade is rotated into a different plane from the first blade when the second blade is rotated from the first position toward the second position.

An endoscopic surgical instrument includes a main body assembly, and a cannula having a lumen and formed with a slot. An inner tube, which houses a spring-biased retractable cutting blade assembly having a cutting blade, is mounted on one end of the main body assembly and extends axially therefrom. The tube is receivable within the lumen of the cannula, and may be particularly oriented within the cannula lumen such that the cutting blade may be caused to project from both the tube and the cannula slot. The inner tube has a bore in which the distal end of an endoscope may be received. The instrument may be locked in one position to allow the endoscope to engage the blade assembly and cause the cutting blade to project from the cannula slot during a tissue cutting procedure, or may be locked in another position wherein the cutting blade remains retracted.

A medical instrument for percutaneous release procedures, especially on upper or lower limbs, including percutaneous carpal tunnel release or percutaneous A1 pulley release. The medical instrument includes a handle portion to allow handling, orientation and manipulation of the medical instrument by a surgeon, and an elongated rod member secured to the handle portion and extending substantially within a defined plane. A first portion of the elongated rod member extends substantially along a first direction within the defined plane away from the handle portion, and a second portion of the elongated rod member is curved and/or bent within the defined plane. A free end of the elongated rod member, at a terminal end of the second portion, may be shaped as a beveled end including a beveled surface, which beveled end acts as a cutting device to severe tissue, and the beveled surface being inclined with respect to the defined plane.

An embodiment includes an apparatus for carpel tunnel syndrome surgery. The apparatus comprises: a shaft including a shaft proximal end, a shaft distal end, and a shaft long axis, wherein the shaft distal end comprises a raised edge; a linkage included within the shaft; a blade coupled to a distal end of the linkage; wherein (a)(i) an axis parallel to the shaft long axis intersects the raised edge but does not intersect the shaft, (a)(ii) the raised edge is curvilinear, (a)(iii) the raised edge includes a first lateral edge portion, a second lateral edge portion, and a middle edge portion between the first and second lateral edge portions; and (a)(iv) the first and second lateral edge portions are both proximal to the middle edge portion. Other embodiments are described herein.

An apparatus with a deployable blade for probing and cutting can include an elongate member having a probe and a blade associated with a first end thereof. The probe can include a target interaction surface that is selectively movable between a retracted state and a target acquisition state. The blade includes a cutting edge and is selectively movable between a retracted position and an extended position. The handheld apparatus may additionally include a manually operated control that is operably connected to the probe and/or the blade to cause the retraction/extension of the probe and/or blade.

Systems and methods are described for correcting sagittal imbalance in a spine including instruments for performing the controlled release of the anterior longitudinal ligament through a lateral access corridor and hyper-lordotic lateral implants.

The invention provides a tissue cutting device comprising a handle, a first blade, and a second blade. The second blade is coupled to the handle. The second blade is rotatable relative to the first blade such that the second blade is configured to rotate between a first position and a second position. The second blade is in a same plane as the first blade when the second blade is in the first position. The second blade is rotated into a different plane from the first blade when the second blade is rotated from the first position toward the second position.

A device for treating trigger thumb or trigger finger may include a handle, an introducer shaft extending from the handle, a blade shaft slidably disposed on the handle and the introducer shaft, a blade at or near a distal end of the blade shaft, a slider on the handle, attached to a proximal end of the blade shaft, for sliding the blade shaft and the blade distally and proximally along the introducer shaft, and a neurovascular guard slidably coupled with the handle and disposed over at least part of the blade shaft. The neurovascular guard may be made of a material that allows passage of ultrasound waves, such as Ultem, PEEK, PPS, or other polymers.

A catheter placement system including a catheter having a catheter tube distally coupled to a catheter hub having one or more extension legs proximally coupled to the catheter hub. The catheter tube defines one or more lumens where each of the one or more lumens is in fluid communication with one of the extension legs. The catheter placement system further includes a skin nicking device configured to transition between a sheathed configuration and a deployed configuration. The skin nicking device includes a needle defining a needle lumen, having a needle wall including one or more slots in fluid communication with an outside surface of the needle, and one or more blades configured to be aligned with the one or more slots, the one or more blades coupled to a distal end of one or more connecting members within the needle lumen.