Catheter system, devices and methods for diagnosing and treating lateral stenosis causing back pain and or leg pain. The devices comprise a tubular part for insertion into a working cannula to self-position itself safely within the foramen, and minimize the risk of displacement medially or laterally, to prevent nerve or dura injury. An expandable membrane is configured to maintain the catheter device within the foramen. Expansion of this membrane would decompress the nerve within the foramen by opening the foraminal canal as the membrane expands.

A disposable insertion instrument for inserting an implant includes a handle assembly, a drive assembly, and a plunger assembly. The drive assembly comprises an inner shaft and a spring received within an outer sleeve. A locking pin and drive lobes on the inner shaft cooperate to reversibly lock the drive assembly in a retracted position. A medical implant may be attached to the instrument via an adapter located at a distal end of the drive assembly. Following use for insertion of the medical implant into a patient, the disposable insertion instrument may be discarded.

A device for expanding spacing between spinous processes includes a first supporter, a second supporter and a pin. The first supporter includes a first protrusion, a second protrusion opposing the first protrusion, and a first concave portion formed between the first protrusion and the second protrusion for supporting one spinous process. The second supporter includes a third protrusion, a fourth protrusion opposing the third protrusion, and a second concave portion formed between the third protrusion and the fourth protrusion for supporting another spinous process. The pin pivots the first supporter to the second supporter so as to provide the device an expansion state and a close state for removal and installation between two spinous processes. In addition, a method for expanding spacing between spinous processes is also provided.

An insertion instrument for inserting an implant includes an elongated main body having a proximal handle and a distal portion that selectively couples to the implant. A wing actuation tool is slidably engaged in a central passage of the elongated main body to fix the implant to the elongated main body. The wing actuation tool temporarily attaches to the implant allowing for deployment and retraction of wings of the implant during surgery. Longitudinal translation of the wing actuation tool deploys an actuation plunger of the implant.

A surgical instrument system comprises surgical instruments for use with an implantable interspinous device having at least one pair of wings for securing the implantable device to a spinous process. The instrument system may include a surgical instrument for expanding or spreading the pair of wings to accommodate the spinous process. Further, a surgical instrument may be provided for crimping or compressing the pair of wings against the spinous process for secure attachment of the device to a vertebra. The surgical instruments may be configured similar to pliers and apply force to the pair of wings within a predetermined range so as to avoid damage, weakening or breakage of the pair of wings. The surgical instrument system may also include interspinous devices of differing sizes.

An implantable device may include a barrel, the barrel having an upper portion and a lower portion. The implantable device may further include an actuator assembly disposed in the barrel, and a central screw that extends from a rear ramped actuator through a front ramped actuator. The implantable device may further include a first plate having multiple projections extending from one side of the first plate. The implantable device may further include a second plate having multiple projections extending from one side of the second plate, the second plate configured to be received on the central screw. The barrel may be configured to transition from a collapsed form having a first height to an expanded form having a second height and wherein the second height is greater than the first height.

An insertion instrument for inserting an implant includes an elongated main body having a proximal handle and a distal portion that selectively couples to the implant. A wing actuation tool is slidably engaged in a central passage of the elongated main body to fix the implant to the elongated main body. The wing actuation tool temporarily attaches to the implant allowing for deployment and retraction of wings of the implant during surgery. Longitudinal translation of the wing actuation tool deploys an actuation plunger of the implant.

An implantable device may include a barrel, the barrel having an upper portion and a lower portion. The implantable device may further include an actuator assembly disposed in the barrel, and a central screw that extends from a rear ramped actuator through a front ramped actuator. The implantable device may further include a first plate having multiple projections extending from one side of the first plate. The implantable device may further include a second plate having multiple projections extending from one side of the second plate, the second plate configured to be received on the central screw. The barrel may be configured to transition from a collapsed form having a first height to an expanded form having a second height and wherein the second height is greater than the first height.

A spinal jack adapted for installation between first and second vertebral processes, including first and second inter-expandable jack halves arranged between retracted and expanded positions. Each of the jack halves further includes gripping portions adapted for engaging the vertebral processes. A worm gear mechanism provides for expanding or retracting the jack halves in order to establish a corrected adjusted orientation between the processes and includes each of stationary rotatable slave gears along with support stems with integrated worm gear interfaces for expanding the jack halves relative to each other.

Disclosed are laminoplasty devices and systems, kits that include such laminoplasty devices or systems or components thereof; and methods of assembling and using such laminoplasty devices and systems. In particular, articulating laminoplasty devices are provided that allow lamina plates to be adjusted angularly and transitionally with respect to a cage connecting the lamina plates. Also provided are laminoplasty plates that are configured so as to be assembled with a bone graft housing, and which provide an opening configured to facilitate bone graft insertion into the housing. Further provided are expandable laminoplasty fixation systems that include a lateral mass plate, a lamina plate and a set screw that when screwed and unscrewed, allows one to contract and expand the plates with respect to one another.