EXPANDABLE IMPLANT WITH PIVOTING CONTROL ASSEMBLY

An expandable implant includes a lower support; an upper support pivotally coupled to the lower support and including a control channel; and a control assembly. The control assembly includes a control shaft coupled to the lower support and a control member coupled to the control shaft and configured to move along the control shaft. The control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel. Movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support. 1. An expandable implant comprising:a lower support;an upper support pivotally coupled to the lower support and including a control channel;{'claim-text': ['a control shaft coupled to the lower support;', 'a control member coupled to the control shaft and configured to move along the control shaft, wherein the control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel;'], '#text': 'an control assembly comprising:'}wherein movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support.2. The expandable implant of claim 1 , wherein the upper support includes a first ramp surface configured to slidably engage a second ramp surface on the pivot member.3. The expandable implant of claim 2 , wherein the control channel includes an alignment channel configured to slidably receive an alignment projection on the pivot member.4. The expandable implant of claim 1 , wherein the base member includes a cylindrical boss claim 1 , and wherein the pivot member is pivotally received on the cylindrical boss.5. The expandable implant of claim 4 , wherein the cylindrical boss includes first and second cylindrical ...

Retractor with modular handles

A retractor assembly includes a base; a first side arm assembly coupled to a first side of the base and configured to translate relative to the base along a first direction; a second side arm assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side arm assembly; and a central arm assembly coupled to a center portion of the base and configured to translate relative to the base along a second direction different from the first direction.

IMPLANT ASSEMBLY WITH EXPANDABLE IMPLANT AND PLATE

An implant assembly includes an expandable implant, the expandable implant including a base member and an adjustable member movable relative to the base member such that the implant is movable between a collapsed configuration and an expanded configuration. The base member includes an attachment port. The implant assembly further includes a plate configured to be coupled to expandable implant when the expandable implant is in the expanded configuration, a coupling fastener configured to couple the plate to the expandable implant, and at least one bone screw configured to extend through the plate and into an adjacent portion of bone. The attachment port is configured to receive an installation tool during positioning of the expandable implant and to receive the coupling fastener to couple the plate to the expandable implant.

Foot bone plate providing fixation and compression

A foot bone plate provides both fixation of two bones or bone portions and compression across their juncture. The foot bone plate has a plurality of bone screw bores positioned to receive and hold a bone screw on both sides of the two bones/bone portions (i.e. fixation), and a lateral flange positioned to receive and hold a bone screw across the foot bones/foot bone portions juncture (i.e. compression). The foot bone plate has an elongate body having a plurality of bores along its length configured to receive and hold a bone screw generally perpendicular to the foot bone plate and into the two foot bone portions. A flange is positioned at a side of the plate and includes a bore to receive and hold a bone screw. The flange and flange bore positions and holds the bone screw such that it extends through the juncture of the two bones/bone portions.

Laminoplasty Rod System

A laminoplasty rod and rod system that allows for variable angulation, translation (distraction and/or compression) and rotation of a spinal lamina bone portion associated with a laminoplasty, prior to fixation thereof. The laminoplasty rod is configured for use with a polyaxial spinal rod bone screw assembly that is adapted to be anchored to the vertebra associated with the laminoplasty, and is attachable to the spinal lamina bone portion. The laminoplasty rod system provides positional attachment of the laminoplasty rod to the spinal components associated with the laminoplasty and fixation thereof in various orientations. The laminoplasty rod system is characterized by a configured laminoplasty rod that fits into or onto the head of a polyaxial spinal rod bone screw assembly. A bone screw boss, defining a bone screw attachment configuration, is formed at one end of the laminoplasty rod. Preferably, but not necessarily, the bone screw boss is situated at an angled end of the rod having a pre-defined bend that provides for greater variation in rod orientation.

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant is disclosed. The expandable implant includes a base member having a top surface and a bottom surface opposite the top surface, and an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position. The adjustable member has a top surface and a bottom surface opposite the top surface. The top surface of the adjustable member and the bottom surface of the base member form a first angle while the adjustable member is in the first, collapsed position, and the top surface of the adjustable member and the bottom surface of the base member form a second angle while the adjustable member is in the second, expanded position. The first angle is different from the second angle.

EXPANDABLE SPINAL INTERBODY AND INTRAVERTEBRAL BODY DEVICES

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable from a first circumference to a second circumference through axial compression of segments of the device, particularly once the device has been properly situated within a vertebral space. The interbody/intravertebral body device is characterized by a plurality of axially stacked, individual segments that are provided on a central insertion and deployment rod. Each segment includes a central plate or body to which are pivotally attached plate or leaf structures. Pivoting of the structures provides a collapsed or unexpanded position of the first circumference and an open or expanded position of the second circumference. 1. An implant for insertion into a spinal space , the implant comprising:a body assembly, the body assembly comprising a first portion moveably coupled to a second portion along a longitudinal axis; andupper and lower support members disposed at least partially between the first portion and the second portion;wherein movement of the first portion and the second portion toward each other causes the upper and lower support members to move away from each other, and wherein movement of the first portion and the second portion away from each other causes the upper and lower members to move toward each other.2. The implant of claim 1 , further comprising a control member moveably coupling the first portion to the second portion claim 1 , the control member extending through the second portion and being threadingly received within the first portion.3. The implant of claim 2 , wherein rotation of the control member moves the first portion relative to the second portion.4. The implant of claim 3 , wherein the control member comprises a screw having a threaded portion received by a threaded bore in the first portion claim 3 , and a head received within a counterbore in the second portion.5. The implant of claim 1 , wherein the upper and lower support members are ...

Expandable implant assembly

An expandable implant includes a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end; an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position; a control shaft rotatable received by the base member, wherein rotation of the control shaft cause relative movement of the adjustable member relative to the base member; and at least one control member received on the control shaft and by the control channel, wherein rotation of the control shaft causes the control member to translate along the control shaft and along the control channel.

EXPANDABLE SPINAL INTERBODY AND INTRAVERTEBRAL BODY DEVICES

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable and contractable. The device includes a body assembly, a top member configured to fit within a gap in the body assembly, a drive gear disposed within the body assembly at a distal end of the body assembly, a proximal gear assembly, and a distal gear assembly. The drive gear includes a receiver accessible from outside the body assembly and configured to be rotated in order to rotate the drive gear. Each gear assembly is attached to the top member. The distal gear assembly engages the drive gear. Rotation of the drive gear in a first direction causes the gear assemblies to translate the top member away from the body assembly, and rotation of the drive gear in a second direction causes the gear assemblies to translate the top member towards the body assembly.

IMPLANT FOR BONE FIXATION

A wedge-shaped bone implant, particularly but not necessarily, for fixing bones of the foot is provided. The implant has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a foot bone, eliminating the need to also use a plate. The implant can include an opening that extends through the implant body from one tapered side thereof to the other tapered side thereof. This opening allows the introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the body may also have teeth, serrations or the like. The implant body may include a hole or the like in the distal aspect thereof. This allows for the insertion of a metallic component (e.g. titanium or tantalum) to allow for the visibility of the extent of the implant body in radiography, x-ray, or the like. 1. A foot bone implant comprising:a wedge-shaped body defining an elongated top, a first slanted side, a second slanted side opposite the first slanted side, a first lateral end, a second lateral end opposite the first lateral end, and a bottom that is narrower in width than the elongated top, the first slanted side extending from a first elongated side of the elongated top to a first elongated side of the bottom, the second slanted side extending from a second elongated side of the elongated top to a second elongated side of the bottom, the first lateral side extending from a first lateral side of the elongated top to a first lateral side of the bottom, and the second lateral side extending from a second lateral side of the elongated top to a second lateral side of the bottom;a first bore extending from the second slanted side to the first slanted side, the first lateral end, the elongated top, and the first lateral side of the elongated top proximate the first elongated side of the elongated top; anda second bore extending from the first slanted side to the second slanted side, the second lateral end, the elongated top, and the ...

Foot implant for bone fixation

A wedge-shaped bone implant, particularly but not necessarily, for fixing bones of the foot is provided. The implant has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a foot bone, eliminating the need to also use a plate. The implant can include an opening that extends through the implant body from one tapered side thereof to the other tapered side thereof. This opening allows the introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the body may also have teeth, serrations or the like. The implant body may include a hole or the like in the distal aspect thereof. This allows for the insertion of a metallic component (e.g. titanium or tantalum) to allow for the visibility of the extent of the implant body in radiography, x-ray, or the like.

SYSTEMS AND METHODS FOR SPINAL ROD INSERTION AND REDUCTION

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder. 1. A method of reducing a spinal rod , comprising:securing a spinal rod guide assembly to a vertebral body, the spinal rod guide assembly including an upper threaded portion spaced apart from a lower threaded portion;positioning a spinal rod within the spinal rod guide assembly;positioning a fastener within the spinal rod guide assembly adjacent the spinal rod;engaging the fastener with a reduction tool; androtating the reduction tool such that a threaded portion of the reduction tool threadingly engages and disengages the upper threaded portion of the spinal rod guide assembly prior to the fastener threadingly engaging the lower threaded portion.2. The method of claim 1 , wherein the spinal rod guide assembly includes an intermediate threaded portion claim 1 , and further comprising rotating the reduction tool to threadingly engage the intermediate threaded portion prior to threadingly engaging the lower threaded portion.3. The method of claim 2 , wherein the intermediate threaded portion and the lower threaded portion enable continuous threading of the fastener between the intermediate threaded portion and the lower threaded portion.4. The method of claim 2 , further comprising detaching the upper and intermediate threaded portions from the lower threaded portion.5. The method of claim 4 , wherein detaching the upper and intermediate threaded portion comprises applying a torque to a portion of the spinal rod guide ...

EXPANDABLE SPINAL INTERBODY ASSEMBLY

An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of bone, a first central aperture extending from the upper surface to an interior of the implant, and a first grid structure surrounding the first central aperture; a bottom support assembly defining a lower surface configured to engage a second portion of bone, a second central aperture extending from the lower surface to the interior, and a second grid structure surrounding the second central aperture; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position. 1. An expandable implant , comprising:a top support assembly defining an upper surface configured to engage a first portion of bone, a first central aperture extending from the upper surface to an interior of the implant, and a first grid structure surrounding the first central aperture;a bottom support assembly defining a lower surface configured to engage a second portion of bone, a second central aperture extending from the lower surface to the interior, and a second grid structure surrounding the second central aperture; anda control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position.2. The expandable implant of claim 1 , wherein the first grid structure includes a first plurality of apertures extending from the upper surface toward the interior claim 1 , and the second grid structure includes a second plurality of apertures extending from the lower surface toward the interior.3. The expandable implant of claim 2 , wherein the first plurality of apertures extend partially through the top support assembly and the ...

Posterior spinal prosthesis

A posterior spinal prosthesis is configured to cover exposed portions of a spinal column especially, but not necessarily, as a result of a medical spinal procedure and particularly, to provide posterior coverage of an exposed spinal cord, soft tissue, Foramen and/or adipose tissue, associated with one or more vertebrae as a result of the removal the spinous processes and/or the spinous process and laminar hoods from the one or more vertebrae of the spine as a result of a spinal decompression procedure or other reason. A plate forming the prosthesis is connectable to spine rod constructs implanted on lateral sides of the vertebrae and projects in the posterior direction relative to the connection. The plate is generally curved in the superior/inferior direction to provide either a lordotic or kyphotic curvature depending on the portion of the spine to which the prosthesis is utilized. As such, the posterior spinal prosthesis may be used on any portion of the spine such as the cervical vertebrae ...

Radially expandable spinal interbody device and implantation tool

A spinal interbody device includes a base link comprising a first end and a second end, the base link including a cutout extending through the base link between the first end and the second end; a linkage including a first link having a first end coupled to the first end of the base link and a second end, the first link including a first aperture extending through the first link and defining a first longitudinal axis; and a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link, the second link including a second aperture extending through the second link and defining a second longitudinal axis. The base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces. When the linkage is movable relative to the base link between a collapsed position and an expanded position, wherein when in the expanded position, an unobstructed line of sight is provided through the cutout and the first aperture along the first longitudinal axis and through the cutout and the second aperture along the second longitudinal axis.

Posterior Cervical Cross Connector Assemblies

A spinal cross connector head assembly and a cross connector assembly utilizing the spinal cross connector head assembly are configured for fixation to an existing spinal rod bone screw head. The spinal cross connector head assembly has one or more components which incorporate one or more breakaway portions that aid in the installation of the cross connector head assembly onto a polyaxial spinal rod bone screw assembly. The spinal cross connector assembly includes first and second spinal cross connector head assemblies each of which is configured for fixation to existing, adjacent spinal rod screw heads and connection with a cross connector rod. Each spinal cross connector rod head assembly has a dual breakaway system including a cross connector head component having a breakaway collar that, once detached, provides a polyaxial cross connector head, and a set screw component having a breakaway set screw that, once detached, provides fixation of the orientation of the polyaxial cross connector ...

Craniospinal fusion method and apparatus

An apparatus for surgical fusion of a cranio-cervical junction includes a plate member, where the plate member includes a bottom portion configured to be secured to a cranium; a top portion including a plurality of perforations extending therethrough configured to promote bone growth, wherein the top portion and the bottom portion define a graft accommodation space; and first and second side portions coupled to the top and bottom portions on first and second sides of the graft accommodation space. The first side portion is configured to receive a first support rod and the second side portion is configured to receive a second support rod.

SPINAL IMPLANT FOR LUMBAR VERTEBRA TO SACRUM FIXATION

A spinal implant includes a first arm comprising a first upper portion and a first lower portion extending from a first middle portion, the first upper portion, first lower portion, and first middle portion defining a first inward facing surface; a projection extending from the first middle portion; a second arm comprising a second upper portion and a second lower portion extending from a second middle portion, the second middle portion defining a bore configured to receive the projection to enable adjustment of the second arm relative to the first arm, the second upper portion, the second lower portion, and the second middle portion defining a second inward facing surface; a plurality of first spikes extending in a generally perpendicular fashion from the first and second inward facing surfaces; and at least one second spike extending in a non-perpendicular fashion from the first and second inward facing surfaces. 1. A spinal implant comprising:a first arm comprising a first upper portion and a first lower portion extending from a first middle portion, the first upper portion, first lower portion, and first middle portion defining a first inward facing surface;a projection extending from the first middle portion of the first arm; anda second arm comprising a second upper portion and a second lower portion extending from a second middle portion, the second middle portion defining a bore configured to slidably receive the projection to enable adjustment of the second arm relative to the first arm, the second upper portion, the second lower portion, and the second middle portion defining a second inward facing surface;a plurality of first spikes extending in a generally perpendicular fashion from the first and second inward facing surfaces;at least one second spike extending in a non-perpendicular fashion from each of the first and second inward facing surfaces.2. The spinal implant of claim 1 , wherein the at least one second spike extends from a peripheral edge of ...

Posterior cervical cross connector assemblies

A spinal cross connector head assembly and a cross connector assembly utilizing the spinal cross connector head assembly are configured for fixation to an existing spinal rod bone screw head. The spinal cross connector head assembly has one or more components which incorporate one or more breakaway portions that aid in the installation of the cross connector head assembly onto a polyaxial spinal rod bone screw assembly. The spinal cross connector assembly includes first and second spinal cross connector head assemblies each of which is configured for fixation to existing, adjacent spinal rod screw heads and connection with a cross connector rod. Each spinal cross connector rod head assembly has a dual breakaway system including a cross connector head component having a breakaway collar that, once detached, provides a polyaxial cross connector head, and a set screw component having a breakaway set screw that, once detached, provides fixation of the orientation of the polyaxial cross connector ...

Self-Contained Assembly For Installation of Orthopedic Implant Components Onto an Orthopedic Implant

A self-contained orthopedic implant component assembly provides for concerted or concerted and independent installation of orthopedic components onto an orthopedic implant. The assembly includes a first orthopedic component formation for installation of a first orthopedic component thereof onto the orthopedic implant and a second orthopedic component formation for installation of a second orthopedic component thereof onto the orthopedic implant. The second orthopedic implant formation is carried by the first orthopedic implant formation such that installation of the first orthopedic implant formation into the orthopedic implant at least partially installs the second orthopedic implant formation into the orthopedic implant. One or both of the first and second orthopedic component formations includes a component driver for receipt of installation torque whereby application of rotational torque installs the orthopedic component(s) onto the orthopedic implant. A component driver is detachable ...

SYSTEMS AND METHODS FOR SPINAL ROD INSERTION AND REDUCTION

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Systems and methods for spinal rod insertion and reduction

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Posterior cross connector assembly

A spinal rod cross connector assembly for connection to adjacent spinal rods provides polyaxial positioning of polyaxial heads of the cross connector assembly relative to each spinal rod and which allows adjustment and fixation of the span of a cross connector or arm of the cross connector assembly between the two polyaxial heads through movement of the cross member relative to only one polyaxial head. Each polyaxial head has a clamp that provides attachment to the respective spinal rod and which allows the body of the polyaxial head to rotate relative thereto. Fixation of the orientation of a polyaxial head is achieved through placement and interaction of a set screw in the polyaxial head. The arm is preferably integral with and extends from a lateral side of one of the polyaxial heads. The second one of the polyaxial heads receives the arm and allows length adjustment relative thereto.

Posterior spinal bridge assembly providing static or dynamic N-level spinal bridge interconnection

A bio-compatible posterior spinal bridge assembly provides static or dynamic N-level spinal bridge interconnection between adjacent posterior spinal bridges and posterior spinal bridge assemblies. The posterior spinal bridge assembly includes a spinal bridge that is received in posterior vertebral screw assemblies that are affixed a vertebra and to laterally span the posterior side of the vertebra, and an interconnection element that allows static or dynamic connection between adjacent spinal bridges and/or spinal bridge assemblies. The interconnection element is defined by interconnection members that are carried by the spinal bridge and which provide static or dynamic connection between any number of adjacent spinal bridges/bridge assemblies. The interconnection members are attachable at various positions along the spinal bridge such as medially, laterally, or midline on the spinal bridge. Adjacent spinal bridge assemblies may thus be statically or dynamically linked, connected or coupled ...

Expandable interbody and intravertebral body devices

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable and contractable. The device includes a body assembly, a top member configured to fit within a gap in the body assembly, a drive gear disposed within the body assembly at a distal end of the body assembly, a proximal gear assembly, and a distal gear assembly. The drive gear includes a receiver accessible from outside the body assembly and configured to be rotated in order to rotate the drive gear. Each gear assembly is attached to the top member. The distal gear assembly engages the drive gear. Rotation of the drive gear in a first direction causes the gear assemblies to translate the top member away from the body assembly, and rotation of the drive gear in a second direction causes the gear assemblies to translate the top member towards the body assembly.

Radially expandable spinal interbody device and implantation tool

A spinal interbody device includes a base link having a first end and a second end, a linkage including a first link having a first end coupled to the first end of the base link and a second end, and a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link. The base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces. The device further includes at least one radiographic element provided in at least one of the first link and the second link and positioned such that the radiographic element provides an indication of a degree of expansion of the device when the device is imaged from one of the first side and the second side of the device.

EXPANDABLE INTERBODY AND INTRAVERTEBRAL BODY DEVICES

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable and contractable. The device includes a body assembly, a top member configured to fit within a gap in the body assembly, a drive gear disposed within the body assembly at a distal end of the body assembly, a proximal gear assembly, and a distal gear assembly. The drive gear includes a receiver accessible from outside the body assembly and configured to be rotated in order to rotate the drive gear. Each gear assembly is attached to the top member. The distal gear assembly engages the drive gear. Rotation of the drive gear in a first direction causes the gear assemblies to translate the top member away from the body assembly, and rotation of the drive gear in a second direction causes the gear assemblies to translate the top member towards the body assembly.

Retractor

A retractor assembly includes a base; a first side arm assembly coupled to a first side of the base and configured to translate relative to the base along a first direction; a second side arm assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side arm assembly; and a central arm assembly coupled to a center portion of the base and configured to translate relative to the base along a second direction different from the first direction.

Spinal clips for interspinous decompression

A spinal clip for creating a potential space within the spinal canal and thus stabilizing the spine without the need for additional spinal components is embodied in different forms. The spinal clips are configured to provide a clamping or holding force against and/or to the spinous processes, transverse processes and/or the lamina of adjacent vertebrae. In one form, the spinous process clips utilize pivoting to effect clamping or holding. In another form, the spinous process clips utilize rotation to effect clamping or holding. Such rotation may be between clamping or holding members or via a screw system. In yet another form, the spinous process clips utilize ratcheting to effect clamping or holding. In a still further form, the spinous process clips utilize expansion to effect clamping or holding. Depending on the form of clamping or holding, the spinous process clips can provide infinite adjustment of the clamping or holding force within an adjustment range, or provide discrete steps or levels of the clamping or holding force.

Spinal Clips For Interspinous Decompression

A spinal clip for creating a potential space within the spinal canal and thus stabilizing the spine without the need for additional spinal components is embodied in different forms. The spinal clips are configured to provide a clamping or holding force against and/or to the spinous processes, transverse processes and/or the lamina of adjacent vertebrae. In one form, the spinous process clips utilize pivoting to effect clamping or holding. In another form, the spinous process clips utilize rotation to effect clamping or holding. Such rotation may be between clamping or holding members or via a screw system. In yet another form, the spinous process clips utilize ratcheting to effect clamping or holding. In a still further form, the spinous process clips utilize expansion to effect clamping or holding. Depending on the form of clamping or holding, the spinous process clips can provide infinite adjustment of the clamping or holding force within an adjustment range, or provide discrete steps ...

Modular telescoping surgical instrument

A surgical instrument provides rotational and axial variations of a working end relative to a handle of the surgical instrument for configuration flexibility of the working end. An internal configuration of the handle of the surgical instrument accepts a retention portion of the working end in several positions. The working end can be varied in axial length relative to a front end of the handle and in axial position relative to the extension of the working end from the front end of the handle. A retention mechanism interacts with the handle and the working end to fix a position of the working end in the handle. The working end may be shaped to provide a bayonet version wherein the working end extends from the front end of the handle offset from the handle's longitudinal center, and a non-bayonet version wherein the working end extends from the handle's longitudinal center.

Foot Bone Plate Providing Fixation and Compression

A foot bone plate provides both fixation of two bones or bone portions and compression across their juncture. The foot bone plate has a plurality of bone screw bores positioned to receive and hold a bone screw on both sides of the two bones/bone portions (i.e. fixation), and a lateral flange positioned to receive and hold a bone screw across the foot bones/foot bone portions juncture (i.e. compression). The foot bone plate has an elongate body having a plurality of bores along its length configured to receive and hold a bone screw generally perpendicular to the foot bone plate and into the two foot bone portions. A flange is positioned at a side of the plate and includes a bore to receive and hold a bone screw. The flange and flange bore positions and holds the bone screw such that it extends through the juncture of the two bones/bone portions. 1. An implant for fixing and compressing two adjacent bone portions across their juncture , the implant comprising:an elongate body defining an upper surface, a lower surface opposite the upper surface; a first lateral side, a second lateral side opposite the first lateral side, a first end, and a second end opposite the first end;a plurality of cylindrical bores in the elongate body each one of which has an axis that extends between the upper surface of the elongate body and the lower surface of the elongate body, the plurality of cylindrical bores situated along the elongate body from the first end to the second end thereof, each cylindrical bore configured to receive and hold a bone screw in one of the two adjacent bone portions; anda flange extending from the lower surface of the elongate body proximate the first lateral side of the elongate body, the flange having a cylindrical bore with an axis that is generally transverse to the axes of the plurality of cylindrical bores in the elongate body, the cylindrical bore of the flange configured to receive and hold a bone screw into the two adjacent bone portions and across ...

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant including a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end. The expandable implant further including an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control shaft received by the base member, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, and at least one control member coupled to the control shaft and received by the control channel, wherein manipulation of the control shaft causes the control member to translate along the control channel. 1. An expandable implant , comprising:a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end;an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position;a control shaft received by the base member, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member; andat least one control member coupled to the control shaft and received by the control channel, wherein manipulation of the control shaft causes the control member to translate along the control channel.2. The expandable implant of claim 1 , the at least one control channel including a first control channel and a second control channel claim 1 , and wherein the at least one control member includes a first control member received in the first control channel and a second control member received in the second control channel.3. The expandable implant of claim 2 , wherein the ...

Directional sequential dilation system with neuro monitoring

A directional sequential dilation system includes a dilation tube assembly having a plurality of cylindrical, nesting directional dilation tubes including an initial cylindrical dilation tube that provides a passage for neuro-monitoring. Subsequent cylindrical directional dilation tubes sequentially increase in size including the increase in diameter. Each tube is configured to nest onto a previous cylindrical directional dilation tube via an off-centered structure formed in each of the subsequent cylindrical directional dilation tubes. The off-centered cutouts allow the subsequent cylindrical dilation tubes to dilate the soft tissue while at the same time sequentially migrate the incision dilation in a particular direction and distance from the initial cylindrical dilation tube insertion point (i.e. the initial neuro-monitoring insertion point). The directional sequential dilation system is particularly useful in spinal surgery.

RADIALLY EXPANDABLE SPINAL INTERBODY DEVICE AND IMPLANTATION TOOL

A spinal interbody device includes a base link having a first end and a second end, and a linkage including a first link having a first end and a second end and a second link having a first end and a second end. The first end of the first link is coupled to the first end of the base link at a first hinge, the second end of the first link is coupled to the first end of the second link at a second hinge; and the second end of the second link is coupled to the second end of the base link at a third hinge. 1. A spinal interbody device comprising:a base link having a first end and a second end; a first link having a first end and a second end;', 'a second link having a first end and a second end;', 'wherein the first end of the first link is coupled to the first end of the base link at a first hinge;', 'wherein the second end of the first link is coupled to the first end of the second link at a second hinge; and', 'wherein the second end of the second link is coupled to the second end of the base link at a third hinge., 'a linkage comprising2. The spinal interbody device of wherein the first link pivots and translates relative to the base link claim 1 , and the second link moves only in a pivoting fashion relative to the base link.3. The spinal interbody device of wherein the first and second links are configured to move between a collapsed position and an expanded position.4. The spinal interbody device of wherein the first link includes a projection extending into a first channel of the base link.5. The spinal interbody device of wherein the second link includes a projection extending into a second channel of the base link.6. The spinal interbody device of wherein the second hinge extends away from the base link when in the expanded position.7. The spinal interbody device of wherein the second hinge is directed inward toward the base link when in the collapsed position.8. A spinal interbody device comprising:a first link;a second link pivotally coupled to the first ...

Radially expandable spinal interbody device and implantation tool

A spinal interbody device includes a base link having a first end and a second end, and a linkage including a first link having a first end and a second end and a second link having a first end and a second end. The first end of the first link is coupled to the first end of the base link at a first hinge, the second end of the first link is coupled to the first end of the second link at a second hinge; and the second end of the second link is coupled to the second end of the base link at a third hinge.

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant includes a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end; an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position; a control shaft rotatable received by the base member, wherein rotation of the control shaft cause relative movement of the adjustable member relative to the base member; and at least one control member received on the control shaft and by the control channel, wherein rotation of the control shaft causes the control member to translate along the control shaft and along the control channel. 1. An expandable implant , comprising:a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end;an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position;a control shaft rotatably received by the base member, wherein rotation of the control shaft cause relative movement of the adjustable member relative to the base member; andat least one control member received on the control shaft and by the control channel, wherein rotation of the control shaft causes the control member to translate along the control shaft and along the control channel.2. The expandable implant of claim 1 , wherein the control member is at least partially spherical and includes a flat portion configured to engage a corresponding flat portion on the adjustable member to prevent rotation of the control member within the control channel.3. The expandable implant of claim 1 , wherein the at least one control channel includes a first control ...

Spinal Implants For Lumbar Vertebra To Sacrum Fixation

A spinal implant is provided for posterior vertebral stabilization and/or fixation of a lumbar vertebra relative to the pelvis by attachment to the spinous process of a lumbar vertebra and to the sacrum of the pelvis. The posterior spinal implant has a spinous process attachment portion and a sacrum attachment portion formed by a first part having a first spinous process segment and a first sacrum segment and a second part having a second spinous process segment and a second sacrum segment. The first segments are carried on a first arm, while the second segments are carried on a second arm with the first and second arms adjustable relative to each other. The first and second spinous process segments and the first and second sacrum segments each have a plurality of inwardly extending spikes for respectively gripping or clamping against the sides of the spinous process and the sacrum.

Implant for immobilizing cervical vertebrae

A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translates for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration.

Radially expandable spinal interbody device and implantation tool

A radially expandable spinal interbody device for implantation between adjacent vertebrae of a spine is deliverable to an implant area in a radially collapsed state having minimum radial dimensions and once positioned is then radially expandable through and up to maximum radial dimensions. The expanded radially expandable spinal interbody device is configured to closely mimic the anatomical configuration of a vertebral face. The radially expandable spinal interbody device is formed of arced, pivoting linkages that allow transfiguration from the radially collapsed minimum radial dimensions through and up to the radially expanded maximum radial dimensions once deployed at the implant site (i.e. between adjacent vertebrae). The pivoting linkages have ends with locking features that inhibit or prevent overextension of the linkages. In one form of the locking features, one end of the linkage includes lobes that form a pocket while the other end of the linkage includes a projection that is adapted ...

SYSTEMS AND METHODS FOR SPINAL ROD INSERTION AND REDUCTION

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

CRANIOSPINAL FUSION METHOD AND APPARATUS

An apparatus for surgical fusion of a cranio-cervical junction includes a plate member, where the plate member includes a bottom portion configured to be secured to a cranium; a top portion including a plurality of perforations extending therethrough configured to promote bone growth, wherein the top portion and the bottom portion define a graft accommodation space; and first and second side portions coupled to the top and bottom portions on first and second sides of the graft accommodation space. The first side portion is configured to receive a first support rod and the second side portion is configured to receive a second support rod. 1. An apparatus for surgical fusion of a cranio-cervical junction , comprising: a bottom portion configured to be secured to a cranium;', 'a top portion including a plurality of perforations extending therethrough configured to promote bone growth, wherein the top portion and the bottom portion define a graft accommodation space; and', 'first and second side portions coupled to the top and bottom portions on first and second sides of the graft accommodation space;', 'wherein the first side portion is configured to receive a first support rod and the second side portion is configured to receive a second support rod., 'a plate member comprising2. The apparatus of claim 1 , wherein a top surface of the plate member defines a generally smooth contoured top peripheral surface extending from a bottom peripheral edge of the plate member.3. The apparatus of claim 2 , wherein the generally smooth contoured peripheral surface is convex between opposing side edges of the bottom peripheral edge and between a front of the bottom peripheral edge and a rear surface of the plate member.4. The apparatus of claim 3 , wherein the bottom portion defines a generally planar bottom surface and wherein the rear surface defines a generally planar rear surface.5. The apparatus of claim 1 , wherein the bottom portion defines a bottom plate including a ...

Posterior spinal prosthesis

A posterior spinal prosthesis is configured to cover exposed portions of a spinal column especially, but not necessarily, as a result of a medical spinal procedure and particularly, to provide posterior coverage of an exposed spinal cord, soft tissue, Foramen and/or adipose tissue, associated with one or more vertebrae as a result of the removal the spinous processes and/or the spinous process and laminar hoods from the one or more vertebrae of the spine as a result of a spinal decompression procedure or other reason. A plate forming the prosthesis is connectable to spine rod constructs implanted on lateral sides of the vertebrae and projects in the posterior direction relative to the connection. The plate is generally curved in the superior/inferior direction to provide either a lordotic or kyphotic curvature depending on the portion of the spine to which the prosthesis is utilized. As such, the posterior spinal prosthesis may be used on any portion of the spine such as the cervical vertebrae, the thoracic vertebrae and/or the lumbar vertebrae. The present posterior spinal prosthesis also provides posterior stabilization of the associated vertebrae as well as aiding in preventing post operative soft tissue cavitation at the decompression site.

Expandable spinal interbody and intravertebral body devices

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable from a first circumference to a second circumference through axial compression of segments of the device, particularly once the device has been properly situated within a vertebral space. The interbody/intravertebral body device is characterized by a plurality of axially stacked, individual segments that are provided on a central insertion and deployment rod. Each segment includes a central plate or body to which are pivotally attached plate or leaf structures. Pivoting of the structures provides a collapsed or unexpanded position of the first circumference and an open or expanded position of the second circumference.

DIRECTIONAL SEQUENTIAL DILATION SYSTEM WITH NEURO MONITORING

A system for providing access to a surgical site includes a first dilator; a second dilator slidably couplable to a first side of the first dilator and including a first interface portion; a plurality of additional dilators slidably couplable to a second side of the first dilator in a nested manner; and at least one retractor member including a second interface portion removably couplable to the first interface portion. When the first interface portion is coupled to the second interface portion, and the second dilator and the plurality of additional dilators are coupled to the first dilator, the second dilator and the at least one retractor member form a retractor wall extending about the first dilator and the plurality of additional dilators. 1. A system for providing access to a surgical site , comprising:a first dilator;a second dilator slidably couplable to a first side of the first dilator and including a first interface portion;a plurality of additional dilators slidably couplable to a second side of the first dilator in a nested manner; andat least one retractor member including a second interface portion removably couplable to the first interface portion;wherein when the first interface portion is coupled to the second interface portion, and the second dilator and the plurality of additional dilators are coupled to the first dilator, the second dilator and the at least one retractor member form a retractor wall extending about the first dilator and the plurality of additional dilators.2. The system of claim 1 , wherein the first dilator and the plurality of additional dilators are removable relative to the retractor wall to provide a working channel defined by an interior of the retractor wall.3. The system of claim 1 , wherein an interior surface of the retractor wall and an exterior wall formed by the first dilator and the plurality of second dilators have complimentary shapes.4. The system of claim 1 , wherein the first dilator includes a generally ...

Expandable implant assembly

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

Implant For Immobilizing Cervical Vertebrae

A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translate for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration. 1. An implant for immobilizing a C1 cervical vertebra of a spine relative to a C2 cervical vertebra of the spine , the implant comprising:a C1 component having a hook for attachment to a posterior arch of a C1 cervical vertebra of a spine, a right wing that extends along a right lateral side of the posterior arch of the C1 cervical vertebra when the hook is attached to the posterior arch of the C1 cervical vertebra, a left wing that extends along a left lateral side of the posterior arch of the C1 cervical vertebra when the hook is attached to the posterior arch of the C1 vertebra, a right element holder situated on the right wing, the right element holder free to translate laterally along the right wing and translate rotationally with respect to the right wing until fixed in position and orientation relative to the right wing via a right element holder setscrew, and a left element holder situated on the left wing, the left element holder free to translate laterally along the left wing and translate rotationally with respect to the left wing until fixed in position and orientation relative to the ...

Expandable spinal interbody assembly

An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of vertebral bone; a bottom support assembly defining a lower surface configured to engage a second portion of vertebral bone; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position. In the collapsed position, the upper surface is generally parallel to the lower surface, and in the expanded position, a portion of the upper surface extends at an acute angle relative to a portion of the lower surface.

Laminoplasty rod system

A laminoplasty rod and rod system that allows for variable angulation, translation (distraction and/or compression) and rotation of a spinal lamina bone portion associated with a laminoplasty. The laminoplasty rod is used with a polyaxial spinal rod bone screw assembly anchored to the vertebra associated with the laminoplasty, and is attachable to the spinal lamina bone portion. The laminoplasty rod system provides positional attachment of the rod to the spinal components and fixation thereof in various orientations. The laminoplasty rod system includes a configured laminoplasty rod that fits into or onto the head of a polyaxial spinal rod bone screw assembly. A bone screw boss, defining a bone screw attachment configuration, is formed at one end of the laminoplasty rod. Preferably, but not necessarily, the bone screw boss is situated at an angled end of the rod having a pre-defined bend that provides for greater variation in rod orientation.

EXPANDABLE SPINAL INTERBODY ASSEMBLY

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port. 1. An expandable implant , comprising:a top support configured to engage a first portion of vertebral bone;a bottom support configured to engage a second portion of vertebral bone;a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support, wherein the control assembly includes a control member including a head and a body portion;wherein the head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.2. The implant of claim 1 , wherein the access port includes a pair of access ports provided on generally opposite sides of the body portion.3. The implant of claim 2 , wherein the recess extends along a longitudinal axis defined by the control member claim 2 , and wherein each access port extends from the recess in a non-perpendicular fashion relative to the longitudinal axis.4. The implant of claim 1 , wherein the control assembly further comprises a front portion adjustably coupled to the body portion of the control member and a rear portion longitudinally fixed relative to the head of the control member.5. The implant of claim 4 , further comprising a retaining member ...

Spinal implants for lumbar vertebra to sacrum fixation

A spinal implant is provided for posterior vertebral stabilization and/or fixation of a lumbar vertebra relative to the pelvis by attachment to the spinous process of a lumbar vertebra and to the sacrum of the pelvis. The posterior spinal implant has a spinous process attachment portion and a sacrum attachment portion formed by a first part having a first spinous process segment and a first sacrum segment and a second part having a second spinous process segment and a second sacrum segment. The first segments are carried on a first arm, while the second segments are carried on a second arm with the first and second arms adjustable relative to each other. The first and second spinous process segments and the first and second sacrum segments each have a plurality of inwardly extending spikes for respectively gripping or clamping against the sides of the spinous process and the sacrum.

POSTERIOR SPINAL PROSTHESIS

A posterior spinal prosthesis is configured to cover exposed portions of a spinal column especially, but not necessarily, as a result of a medical spinal procedure and particularly, to provide posterior coverage of an exposed spinal cord, soft tissue, Foramen and/or adipose tissue, associated with one or more vertebrae as a result of the removal the spinous processes and/or the spinous process and laminar hoods from the one or more vertebrae of the spine as a result of a spinal decompression procedure or other reason. A plate forming the prosthesis is connectable to spine rod constructs implanted on lateral sides of the vertebrae and projects in the posterior direction relative to the connection. The plate is generally curved in the superior/inferior direction to provide either a lordotic or kyphotic curvature depending on the portion of the spine to which the prosthesis is utilized. As such, the posterior spinal prosthesis may be used on any portion of the spine such as the cervical vertebrae, the thoracic vertebrae and/or the lumbar vertebrae. The present posterior spinal prosthesis also provides posterior stabilization of the associated vertebrae as well as aiding in preventing post operative soft tissue cavitation at the decompression site. 120-. (canceled)21. A posterior spinal prosthesis for use with a spinal fixation system having a first plurality of spine implants anchored to a first lateral posterior side of a plurality of vertebrae and a second plurality of spine implants anchored to a second lateral posterior side of the plurality of vertebrae , the posterior spinal prosthesis comprising:a plate sized to extend between the first and second lateral posterior sides of the plurality of vertebrae, the plate defining a first height and having a first lateral edge and a second lateral edge;a first flange configured for connection directly to the first plurality of spine implants anchored to the first posterior lateral side of the plurality of vertebrae, the ...

Bone screw retention in a spinal implant

A spinal implant has a mechanism for inhibiting a bone screw used in attaching the spinal implant to the spine from backing out from the spinal implant once the bone screw has been received in the spinal implant. The spinal implant has a bone screw bore defining a bore wall in which is disposed a resilient closed curve band or ring. The resilient closed curve band has a plurality of resilient segments that extend into the bore. Each one of the plurality of resilient segments form a spring that allows a head of a bone screw to ingress there through but prevents the head of the bone screw from egress there from. The resilient closed curve band forms a retention ring that is received in one or more slots, channels, grooves or the like in the bore hole wall. The plurality of resilient segments are formed as arcs, curves and/or configured arcs/curves that extend radially inward from outer arced or curved portions of the retention ring.

Expandable implant with pivoting control assembly

An expandable implant includes a lower support; an upper support pivotally coupled to the lower support and including a control channel; and a control assembly. The control assembly includes a control shaft coupled to the lower support and a control member coupled to the control shaft and configured to move along the control shaft. The control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel. Movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support.

RETRACTOR WITH MODULAR TAP ASSEMBLIES

A retractor assembly includes a base, a first side assembly coupled to a first side of the base and configured to translate relative to the base along a first direction, a first tap assembly coupled to the first side assembly and configured to threadingly engage bone, a second side assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side assembly, a second tap assembly coupled to the second side assembly and configured to threadingly engage bone, and a center assembly coupled to a center portion of the base. At least a portion of the center assembly is configured to translate relative to the base along a second direction different from the first direction. 1. A retractor assembly , comprising:a base;a first side assembly coupled to a first side of the base and configured to translate relative to the base along a first direction;a first tap assembly coupled to the first side assembly and configured to threadingly engage bone;a second side assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side assembly;a second tap assembly coupled to the second side assembly and configured to threadingly engage bone; anda center assembly coupled to a center portion of the base, wherein at least a portion of the center assembly is configured to translate relative to the base along a second direction different from the first direction.2. The retractor assembly of claim 1 , wherein the center assembly includes a center housing removably coupled to the base and a first arm portion received within the center housing;wherein the first arm portion translates within the center housing relative to the base.3. The retractor assembly of claim 2 , further comprising:a first side blade assembly configured to be received by the first side assembly from a bottom side of the retractor assembly;a second side ...

EXPANDABLE IMPLANT ASSEMBLY WITH COMPRESSION FEATURES

An expandable implant includes a base member, an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control assembly including a control shaft, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, wherein the base member and the adjustable member are coupled together at least in part via the control assembly such that the control shaft is rotationally fixed relative to the base member and the adjustable member, and the adjustable member is resiliently compressible relative to the base member. 1. An expandable implant comprising:a first support configured to engage a first portion of bone;a second support configured to engage a second portion of bone, the second support adjustably coupled to the first support such that the expandable implant is movable between a collapsed position, and an expanded position; anda control assembly including a control shaft and a wedging member coupled to the control shaft, wherein manipulation of the control shaft causes relative movement of the second support relative to the first support;wherein the wedging member is configured to slidably engage the second support at a wedging member interface during manipulation of the control shaft to move the second support relative to the first support, wherein the wedging member interface comprises an elastically compressible portion defining a planar surface.2. The expandable implant of claim 1 , wherein the wedging member comprises the wedging member interface.3. The expandable implant of claim 1 , wherein the planar surface is angled relative to a direction of movement of the second support relative to the first support.4. The expandable implant of claim 1 , wherein the elastically compressible portion is configured to compress when the expandable implant is subjected to compressive loads via the first and second supports.5. The ...

Implant for immobilizing cervical vertebrae

A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translate for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration.

Expandable implant assembly

An expandable includes a base member having a top surface and a bottom surface opposite the top surface, and an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position. The adjustable member has a top surface and a bottom surface opposite the top surface. The top surface of the adjustable member and the bottom surface of the base member form a first angle while the adjustable member is in the first, collapsed position, and the top surface of the adjustable member and the bottom surface of the base member form a second angle while the adjustable member is in the second, expanded position. The first angle is different from the second angle.

EXPANDABLE SPINAL INTERBODY ASSEMBLY

An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of vertebral bone; a bottom support assembly defining a lower surface configured to engage a second portion of vertebral bone; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position. In the collapsed position, the upper surface is generally parallel to the lower surface, and in the expanded position, a portion of the upper surface extends at an acute angle relative to a portion of the lower surface. 1. An expandable implant , comprising:a top support assembly defining an upper surface configured to engage a first portion of vertebral bone;a bottom support assembly defining a lower surface configured to engage a second portion of vertebral bone;a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position;wherein in the collapsed position, the upper surface is generally parallel to the lower surface, and wherein in the expanded position, a portion of the upper surface extends at an acute angle relative to a portion of the lower surface.2. The expandable implant of claim 1 , wherein the top support assembly includes a first portion and a second portion claim 1 , and the bottom support assembly includes a third portion and a fourth portion claim 1 , wherein in the collapsed position claim 1 , the first and second portions are generally aligned and the third and fourth portions are generally aligned claim 1 , and wherein in the expanded position claim 1 , the first portion forms an angle with the second portion claim 1 , and the third portion forms an angle with the fourth ...

SYSTEMS AND METHODS FOR SPINAL ROD INSERTION AND REDUCTION

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

RADIALLY EXPANDABLE SPINAL INTERBODY DEVICE AND IMPLANTATION TOOL

A spinal interbody device includes a base link having a first end and a second end, a linkage including a first link having a first end coupled to the first end of the base link and a second end, and a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link. The base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces. The device further includes at least one radiographic element provided in at least one of the first link and the second link and positioned such that the radiographic element provides an indication of a degree of expansion of the device when the device is imaged from one of the first side and the second side of the device. 1. A spinal interbody device comprising:a base link having a first end and a second end; a first link having a first end coupled to the first end of the base link and a second end;', 'a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link;', 'wherein the base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces; and, 'a linkage comprisingat least one radiographic element provided in at least one of the first link and the second link and positioned such that the radiographic element provides an indication of a degree of expansion of the device when the device is imaged from one of the first side and the second side of the device.2. The spinal interbody device of claim 1 , wherein the radiographic element comprises a pin claim 1 , and wherein a length of an image of the pin provides the indication of the degree of expansion of the device when the device is imaged.3. The spinal interbody device of claim 2 , ...

Three-blade spinal retractor

A three-blade spinal retractor utilizes adjustable and lockable translating arms with angulating blades to provide triangulated medial/lateral and cephalad/caudal tissue retraction for spinal surgeries via the adjustably lockable translating arms. A medial/lateral translating arm with an angularly adjustable retraction blade co-acts and cooperates with angularly adjacent first and second cephalad/caudal translating arms with angularly adjustable retraction blades for tissue retraction and surgical site access. A plate having a medial/lateral adjustment system adjustably holds the medial/lateral translating arm, a first cephalad/caudal adjustment system adjustably holding the first cephalad/caudal translating arm and a second cephalad/caudal adjustment system adjustably holding the second cephalad/caudal translating arm. The translating arms each have a blade holder that provides angular adjustment of the blade. Angular adjustment of each blade along with medial/lateral and cephalad/caudal ...

RADIALLY EXPANDABLE SPINAL INTERBODY DEVICE AND IMPLANTATION TOOL

A spinal interbody device includes a base link comprising a first end and a second end, the base link including a cutout extending through the base link between the first end and the second end; a linkage including a first link having a first end coupled to the first end of the base link and a second end, the first link including a first aperture extending through the first link and defining a first longitudinal axis; and a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link, the second link including a second aperture extending through the second link and defining a second longitudinal axis. The base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces. When the linkage is movable relative to the base link between a collapsed position and an expanded position, wherein when in the expanded position, an unobstructed line of sight is provided through the cutout and the first aperture along the first longitudinal axis and through the cutout and the second aperture along the second longitudinal axis. 1. A spinal interbody device comprising:a base link having a first end and a second end; a first link having a first end coupled to the first end of the base link and a second end;', 'a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link;', 'wherein the base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces; and, 'a linkage comprisingat least one imaging element provided in at least one of the first link and the second link and positioned such that the imaging element provides an indication of a degree of expansion of the device when the ...

Three-Blade Spinal Retractor

A three-blade spinal retractor utilizes adjustable and lockable translating arms with angulating blades to provide triangulated medial/lateral and cephalad/caudal tissue retraction for spinal surgeries via the adjustably lockable translating arms. A medial/lateral translating arm with an angularly adjustable retraction blade co-acts and cooperates with angularly adjacent first and second cephalad/caudal translating arms with angularly adjustable retraction blades for tissue retraction and surgical site access. A plate having a medial/lateral adjustment system adjustably holds the medial/lateral translating arm, a first cephalad/caudal adjustment system adjustably holding the first cephalad/caudal translating arm and a second cephalad/caudal adjustment system adjustably holding the second cephalad/caudal translating arm. The translating arms each have a blade holder that provides angular adjustment of the blade. Angular adjustment of each blade along with medial/lateral and cephalad/caudal adjustment provides improved preciseness and stability in positioning, tissue distraction, and surgical site access. 1. A spinal retractor comprising:a plate having a medial side, a lateral side, and a central side;a first arm extending from the medial side of the plate and configured to translate in a medial/lateral direction, the first arm have a first arm end distal the medial side of the plate;a second arm extending from the lateral side of the plate and configured to translate in a medial/lateral direction, the second arm having a second arm end distal the lateral side of the plate;a third arm extending from the central side of the plate and configured to translate in a cephalad/caudal direction, the third arm having a third arm end distal the central side of the plate;a first blade holder situated at the first arm end, the first blade holder angularly adjustable and configured to receive a first retractor blade;a second blade holder situated at the second arm end, the second ...

Expandable spinal interbody assembly

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

Systems and methods for spinal rod insertion and reduction

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Spinal implant for lumbar vertebra to sacrum fixation

A spinal implant includes a first arm comprising a first upper portion and a first lower portion extending from a first middle portion, the first upper portion, first lower portion, and first middle portion defining a first inward facing surface; a projection extending from the first middle portion; a second arm comprising a second upper portion and a second lower portion extending from a second middle portion, the second middle portion defining a bore configured to receive the projection to enable adjustment of the second arm relative to the first arm, the second upper portion, the second lower portion, and the second middle portion defining a second inward facing surface; a plurality of first spikes extending in a generally perpendicular fashion from the first and second inward facing surfaces; and at least one second spike extending in a non-perpendicular fashion from the first and second inward facing surfaces.

Directional sequential dilation system with neuro monitoring

A system for providing access to a surgical site includes a first dilator; a second dilator slidably couplable to a first side of the first dilator and including a first interface portion; a plurality of additional dilators slidably couplable to a second side of the first dilator in a nested manner; and at least one retractor member including a second interface portion removably couplable to the first interface portion. When the first interface portion is coupled to the second interface portion, and the second dilator and the plurality of additional dilators are coupled to the first dilator, the second dilator and the at least one retractor member form a retractor wall extending about the first dilator and the plurality of additional dilators.

Top Loading Polyaxial Spine Screw Assembly With One Step Lockup

A top loading polyaxial spinal rod screw assembly is configured for simultaneous or one step lockup of angular orientation of a rod holder portion of the screw assembly relative to a bone screw and of a spinal rod within the rod holder portion of the screw assembly. The spinal rod and the angular orientation of the rod holder holding the spinal rod are thus fixed upon receipt of a lockup component of the present assembly. Components of the present spinal rod screw assembly cooperate to allow reception of a spinal rod in a rod holder that is adapted for pivotal retention on a bone screw and to lock or fix the spinal rod within the rod holder while also locking or fixing the angular orientation of the rod holder relative to the bone screw upon receipt of a lockup cap component of the screw assembly in the rod holder. In one form, the present screw assembly is defined by a three-piece polyaxial screw head assembly for a bone screw. The three-piece polyaxial screw head assembly includes a spine rod holder or head configured for pivotal connection with the bone screw, a head insert configured for reception in the spine rod holder, and a lockup (end) cap configured for reception in the spine rod holder. The lockup cap is configured to interact with the head insert to fix an angular position or orientation of the spine rod holder relative to the bone screw at the same time as fixing a spinal rod that has been received in the spine rod holder relative to the spine rod holder.

IMPLANT FOR IMMOBILIZING CERVICAL VERTEBRAE

A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translates for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration. 1. An implant for immobilizing a first bone relative to a second bone , the implant comprising: a body including a first arm and a second arm;', 'a first adjustable element operatively coupled to the first arm to translate laterally along and rotationally relative to the first arm, the first adjustable element including a rod holder and a hook configured to engage the first bone;', 'a second adjustable element operatively coupled to the second arm to translate laterally along and rotationally relative to the second arm, the second adjustable element including a rod holder and a hook configured to engage the first bone;, 'a first component comprising a rod holder;', 'a hook extending from the rod holder and configured to engage the second bone;', 'a rod extending from the rod holder to be received in the rod holder of the first adjustable element of the first component;, 'a second component comprising a rod holder;', 'a hook extending from the rod holder and configured to engage the second bone;', 'a rod extending from the rod holder to be received in the rod holder of the second adjustable element ...

Expandable spinal interbody assembly

An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of bone, a first central aperture extending from the upper surface to an interior of the implant, and a first grid structure surrounding the first central aperture; a bottom support assembly defining a lower surface configured to engage a second portion of bone, a second central aperture extending from the lower surface to the interior, and a second grid structure surrounding the second central aperture; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position.

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant including a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end. The expandable implant further including an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control shaft received by the base member, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, and at least one control member coupled to the control shaft and received by the control channel, wherein manipulation of the control shaft causes the control member to translate along the control channel.

SYSTEMS AND METHODS FOR SPINAL ROD INSERTION AND REDUCTION

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

RETRACTOR WITH MODULAR HANDLES

A retractor assembly includes a base; a first side arm assembly coupled to a first side of the base and configured to translate relative to the base along a first direction; a second side arm assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side arm assembly; and a central arm assembly coupled to a center portion of the base and configured to translate relative to the base along a second direction different from the first direction. 1. A retractor assembly , comprising:a base;a first side arm assembly coupled to a first side of the base and configured to translate relative to the base along a first direction based on rotation of a first drive shaft positioned at a first angle relative to the first direction;a second side arm assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side arm assembly and based on rotation of a second drive shaft positioned at a second angle relative to the first direction; anda central arm assembly coupled to a center portion of the base and configured to translate relative to the base along a second direction different from the first direction based on rotation of a third drive shaft positioned at a third angle relative to the second direction.2. The retractor assembly of claim 1 , wherein the first side assembly translates along a first threaded shaft disposed within the base;wherein the second side assembly translates along a second threaded shaft disposed within the base; andwherein the center assembly translates along a third threaded shaft disposed within the base.3. The retractor assembly of claim 2 , further comprising:a first adjustment knob operatively coupled to the first threaded shaft via a first multi-axis joint;a second adjustment knob operatively coupled to the second threaded shaft via a second multi-axis joint; anda third ...

Spinal Facet Bone Screw System

A spinal facet bone screw system provides tactile feedback to the user during installation to aid in determining when one or more components of the spinal facet bone screw system have been installed or implanted. The spinal facet bone screw system has a spinal facet screw and a washer. Tactile installation feedback is provided at an interface between a friction surface of the head of the spinal facet screw and a friction surface of the pocket of the washer to determine when the spinal facet screw has reached its full insertion depth. The bottom or undersurface of the washer that abuts a spinal facet bone or other spinal component during installation may be configured and/or textured to further provide tactile installation feedback as between the washer and the bone or other spinal component.

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant is disclosed. The expandable implant includes a base member having a top surface and a bottom surface opposite the top surface, and an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position. The adjustable member has a top surface and a bottom surface opposite the top surface. The top surface of the adjustable member and the bottom surface of the base member form a first angle while the adjustable member is in the first, collapsed position, and the top surface of the adjustable member and the bottom surface of the base member form a second angle while the adjustable member is in the second, expanded position. The first angle is different from the second angle.

Expandable spinal interbody and intravertebral body devices

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable and contractable. The device includes a body assembly, a top member configured to fit within a gap in the body assembly, a drive gear disposed within the body assembly at a distal end of the body assembly, a proximal gear assembly, and a distal gear assembly. The drive gear includes a receiver accessible from outside the body assembly and configured to be rotated in order to rotate the drive gear. Each gear assembly is attached to the top member. The distal gear assembly engages the drive gear. Rotation of the drive gear in a first direction causes the gear assemblies to translate the top member away from the body assembly, and rotation of the drive gear in a second direction causes the gear assemblies to translate the top member towards the body assembly.

Retractor with modular tap assemblies

A retractor assembly includes a base, a first side assembly, a second side assembly, and a medial arm assembly. The first side assembly is coupled to a first side of the base and translates relative to the base along a first direction. The second side assembly is coupled to a second side of the base and configured to translate relative to the base along the first direction. The medial arm assembly is coupled to the base and can extend in an extension direction and retract in a retraction direction. The extension direction is opposite the retraction direction. The extension direction and the retraction direction are perpendicular to the first direction. The medial arm assembly includes a body, and a blade assembly. The blade assembly includes a receiving portion and a medial blade. The receiving portion and the medial blade are rotatably interfaced via a ball and a socket.

Implant for immobilizing cervical vertebrae

A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translate for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration.

Expandable implant assembly

An expandable implant including a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end. The expandable implant further including an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control shaft received by the base member, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, and at least one control member coupled to the control shaft and received by the control channel, wherein manipulation of the control shaft causes the control member to translate along the control channel.

Systems and methods for spinal rod insertion and reduction

A guide assembly includes a spinal screw assembly having a bone screw and a spinal rod holder; and a spinal rod guide having first and second elongated arc portions defining a pair of longitudinal slots extending along the first and second arc portions, each of the first and second arc portions further defining at least one recess extending transversely from each of the longitudinal slots, the at least one recess configured to receive at least a portion of a reduction tool to enable reduction of a spinal rod received within the spinal rod holder.

Foot Implant For Bone Fixation

A wedge-shaped bone implant, particularly but not necessarily, for fixing bones of the foot is provided. The implant has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a foot bone, eliminating the need to also use a plate. The implant can include an opening that extends through the implant body from one tapered side thereof to the other tapered side thereof. This opening allows the introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the body may also have teeth, serrations or the like. The implant body may include a hole or the like in the distal aspect thereof. This allows for the insertion of a metallic component (e.g. titanium or tantalum) to allow for the visibility of the extent of the implant body in radiography, x-ray, or the like. 1. A foot bone implant comprising:a wedge-shaped body defining an elongated top, a first slanted side, a second slanted side opposite the first slanted side, a first lateral side, a second lateral side opposite the first lateral side, and a bottom that is narrower in width than the elongated top, the first slanted side extending from a first elongated side of the elongated top to a first elongated side of the bottom, the second slanted side extending from a second elongated side of the elongated top to a second elongated side of the bottom, the first lateral side extending from a first lateral side of the elongated top to a first lateral side of the bottom, and the second lateral side extending from a second lateral side of the elongated top to a second lateral side of the bottom;a first bore extending from a first lateral side of the elongated top proximate the first elongated side of the elongated top to the second slanted side; anda second bore extending from a second lateral side of the elongated top proximate the second elongated side of the elongated top to the first slanted side.2. The foot bone implant of claim 1 , ...

Self-contained assembly for installation of orthopedic implant components onto an orthopedic implant

A self-contained orthopedic implant component assembly provides for concerted or concerted and independent installation of orthopedic components onto an orthopedic implant. The assembly includes a first orthopedic component formation for installation of a first orthopedic component thereof onto the orthopedic implant and a second orthopedic component formation for installation of a second orthopedic component thereof onto the orthopedic implant. The second orthopedic implant formation is carried by the first orthopedic implant formation such that installation of the first orthopedic implant formation into the orthopedic implant at least partially installs the second orthopedic implant formation into the orthopedic implant. One or both of the first and second orthopedic component formations includes a component driver for receipt of installation torque whereby application of rotational torque installs the orthopedic component(s) onto the orthopedic implant. A component driver is detachable ...

Posterior Spinal Prosthesis

A posterior spinal prosthesis is configured to cover exposed portions of a spinal column especially, but not necessarily, as a result of a medical spinal procedure and particularly, to provide posterior coverage of an exposed spinal cord, soft tissue, Foramen and/or adipose tissue, associated with one or more vertebrae as a result of the removal the spinous processes and/or the spinous process and laminar hoods from the one or more vertebrae of the spine as a result of a spinal decompression procedure or other reason. A plate forming the prosthesis is connectable to spine rod constructs implanted on lateral sides of the vertebrae and projects in the posterior direction relative to the connection. The plate is generally curved in the superior/inferior direction to provide either a lordotic or kyphotic curvature depending on the portion of the spine to which the prosthesis is utilized. As such, the posterior spinal prosthesis may be used on any portion of the spine such as the cervical vertebrae ...

Retractor with modular tap assemblies

A retractor assembly includes a base, a first side assembly coupled to a first side of the base and configured to translate relative to the base along a first direction, a first tap assembly coupled to the first side assembly and configured to threadingly engage bone, a second side assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side assembly, a second tap assembly coupled to the second side assembly and configured to threadingly engage bone, and a center assembly coupled to a center portion of the base. At least a portion of the center assembly is configured to translate relative to the base along a second direction different from the first direction.

Expandable implant assembly

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

Bone Screw Retention in a Spinal Implant

A spinal implant has a mechanism for inhibiting a bone screw used in attaching the spinal implant to the spine from backing out from the spinal implant once the bone screw has been received in the spinal implant. The spinal implant has a bone screw bore defining a bore wall in which is disposed a resilient closed curve band or ring. The resilient closed curve band has a plurality of resilient segments that extend into the bore. Each one of the plurality of resilient segments form a spring that allows a head of a bone screw to ingress there through but prevents the head of the bone screw from egress there from. The resilient closed curve band forms a retention ring that is received in one or more slots, channels, grooves or the like in the bore hole wall. The plurality of resilient segments are formed as arcs, curves and/or configured arcs/curves that extend radially inward from outer arced or curved portions of the retention ring. 1. A spinal implant comprising:a body;a bore extending through the body and defining a bore wall; anda band situated in the bore wall, the band having a plurality of resilient curved portions that extend radially inward into the bore and allow a head of a bone screw to pass there through but prevent the head of the bone screw from exiting there from.2. The spinal implant of claim 1 , wherein the band comprises a continuous closed curved structure.3. The spinal implant of claim 2 , wherein the bore wall includes a groove claim 2 , the band situated in the groove.4. The spinal implant of claim 2 , wherein the entire band is composed of a resilient material.5. The spinal implant of claim 4 , wherein the resilient material is nitinol.6. The spinal implant of claim 1 , wherein the plurality of radially inward portions comprises three radially inward portions.7. A spinal implant comprising:a body;a bore extending through the body and defining a bore wall;a channel disposed in the bore wall; anda band situated in the channel, the band having a ...

EXPANDABLE IMPLANT WITH PIVOTING CONTROL ASSEMBLY

An expandable implant includes a lower support; an upper support pivotally coupled to the lower support and including a control channel; and a control assembly. The control assembly includes a control shaft coupled to the lower support and a control member coupled to the control shaft and configured to move along the control shaft. The control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel. Movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support.

Expandable spinal interbody and intravertebral body devices

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable from a first circumference to a second circumference through axial compression of segments of the device, particularly once the device has been properly situated within a vertebral space. The interbody/intravertebral body device is characterized by a plurality of axially stacked, individual segments that are provided on a central insertion and deployment rod. Each segment includes a central plate or body to which are pivotally attached plate or leaf structures. Pivoting of the structures provides a collapsed or unexpanded position of the first circumference and an open or expanded position of the second circumference.

Implant for bone fixation

RETRACTOR WITH MODULAR TAP ASSEMBLIES

A retractor assembly includes a base, a first side assembly, a second side assembly, and a medial arm assembly. The first side assembly is coupled to a first side of the base and translates relative to the base along a first direction. The second side assembly is coupled to a second side of the base and configured to translate relative to the base along the first direction. The medial arm assembly is coupled to the base and can extend in an extension direction and retract in a retraction direction. The extension direction is opposite the retraction direction. The extension direction and the retraction direction are perpendicular to the first direction. The medial arm assembly includes a body, and a blade assembly. The blade assembly includes a receiving portion and a medial blade. The receiving portion and the medial blade are rotatably interfaced via a ball and a socket. 1. A retractor assembly , comprising:a base;a first side assembly coupled to a first side of the base and configured to translate relative to the base along a first direction;a second side assembly coupled to a second side of the base and configured to translate relative to the base along the first direction; and a body; and', 'a blade assembly comprising a receiving portion and a medial blade, wherein the receiving portion and the medial blade are configured to rotatably interface via a ball and a socket., 'a medial arm assembly coupled to the base and configured to extend in an extension direction and retract in a retraction direction, wherein the extension direction is opposite the retraction direction and the extension direction and the retraction direction are perpendicular to the first direction, the medial arm assembly comprising2. The retractor assembly of claim 1 , wherein the medial arm assembly comprises a frame configured to translate relative to the body claim 1 , wherein the blade assembly is coupled to the frame.3. The retractor assembly of claim 2 , wherein the blade assembly is ...

Expandable implant assembly with compression features

An expandable implant includes a base member, an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control assembly including a control shaft, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, wherein the base member and the adjustable member are coupled together at least in part via the control assembly such that the control shaft is rotationally fixed relative to the base member and the adjustable member, and the adjustable member is resiliently compressible relative to the base member.

Posterior Spinal Bridge Assembly Providing Static or Dynamic N-Level Spinal Bridge Interconnection

A bio-compatible posterior spinal bridge assembly provides static or dynamic N-level spinal bridge interconnection between adjacent posterior spinal bridges and posterior spinal bridge assemblies. The posterior spinal bridge assembly includes a spinal bridge that is received in posterior vertebral screw assemblies that are affixed a vertebra and to laterally span the posterior side of the vertebra, and an interconnection element that allows static or dynamic connection between adjacent spinal bridges and/or spinal bridge assemblies. The interconnection element is defined by interconnection members that are carried by the spinal bridge and which provide static or dynamic connection between any number of adjacent spinal bridges/bridge assemblies. The interconnection members are attachable at various positions along the spinal bridge such as medially, laterally, or midline on the spinal bridge. Adjacent spinal bridge assemblies may thus be statically or dynamically linked, connected or coupled ...

Directional Sequential Dilation System With Neuro Monitoring

A directional sequential dilation system includes a dilation tube assembly having a plurality of cylindrical, nesting directional dilation tubes including an initial cylindrical dilation tube that provides a passage for neuro-monitoring. Subsequent cylindrical directional dilation tubes sequentially increase in size including the increase in diameter. Each tube is configured to nest onto a previous cylindrical directional dilation tube via an off-centered structure formed in each of the subsequent cylindrical directional dilation tubes. The off-centered cutouts allow the subsequent cylindrical dilation tubes to dilate the soft tissue while at the same time sequentially migrate the incision dilation in a particular direction and distance from the initial cylindrical dilation tube insertion point (i.e. the initial neuro-monitoring insertion point). The directional sequential dilation system is particularly useful in spinal surgery. 1. A directional incision dilation tube assembly comprising:a non-directional dilation tube having a generally round cross section of a first size and an outer, generally round surface configured with a first nesting structure;a first directional dilation tube having a generally elliptical cross section of a second size which is greater than the first size, a generally round notch in a side of the generally elliptical cross section and sized to be received on the non-directional dilation tube and by the first nesting structure thereof, and an outer, generally elliptical surface configured with second nesting structures;a second directional dilation tube having a generally elliptical cross section of a third second size which is greater than the second size, a generally elliptical notch in a side of the generally elliptical cross section and sized to be received on the first directional dilation tube and by the second nesting structures thereof, and an outer, generally elliptical surface configured with third nesting structures; anda third ...

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port. 1. An expandable implant , comprising:a top support configured to engage a first portion of bone;a bottom support configured to engage a second portion of bone;a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support, wherein the control assembly includes a control member including a head and an access port;wherein the head includes a recess in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port;wherein the control assembly further comprises a front portion adjustably coupled to the control member and a rear portion longitudinally fixed relative to the control member.2. The implant of claim 1 , wherein the access port includes a pair of access ports provided on generally opposite sides of the control member.3. The implant of claim 2 , wherein the recess extends along a longitudinal axis defined by the control member claim 2 , and wherein each access port extends from the recess in a non-perpendicular fashion relative to the longitudinal axis.4. The implant of claim 1 , wherein the control member comprises a threaded screw having a head and a body portion claim 1 , wherein the front portion is adjustable coupled to the body portion and the rear ...

RETRACTOR

A retractor assembly includes a base; a first side arm assembly coupled to a first side of the base and configured to translate relative to the base along a first direction; a second side arm assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side arm assembly; and a central arm assembly coupled to a center portion of the base and configured to translate relative to the base along a second direction different from the first direction. 1. A retractor assembly , comprising:a base;a first side arm assembly coupled to a first side of the base and configured to translate relative to the base along a first direction;a second side arm assembly coupled to a second side of the base and configured to translate relative to the base along the first direction independent from the first side arm assembly; anda central arm assembly coupled to a center portion of the base and configured to translate relative to the base along a second direction different from the first direction.2. The retractor assembly of claim 1 , wherein the first side assembly translates along a first threaded shaft disposed within the base;wherein the second side assembly translates along a second threaded shaft disposed within the base; andwherein the center assembly translates along a third threaded shaft disposed within the base.3. The retractor assembly of claim 2 , further comprising:a first adjustment knob operatively coupled to a first knob bevel gear; anda second adjustment knob operatively coupled to a second knob bevel gear;wherein the first threaded shaft is operatively coupled to a first shaft bevel gear, and wherein the first knob bevel gear engages the first shaft bevel gear such that rotation of the first adjustment knob causes translation of the first side assembly along the first threaded shaft; andwherein the second threaded shaft is operatively coupled to a second shaft bevel gear, and wherein ...

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

EXPANDABLE IMPLANT ASSEMBLY WITH COMPRESSION FEATURES

An expandable implant includes a base member, an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control assembly including a control shaft, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, wherein the base member and the adjustable member are coupled together at least in part via the control assembly such that the control shaft is rotationally fixed relative to the base member and the adjustable member, and the adjustable member is resiliently compressible relative to the base member. 1. An expandable implant , comprising:a base member;an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position;a control assembly including a control shaft, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member;wherein the base member and the adjustable member are coupled together at least in part via the control assembly such that the control shaft is rotationally fixed relative to the base member and the adjustable member, and the adjustable member is resiliently compressible relative to the base member.2. The expandable implant of claim 1 , wherein the control assembly includes an elastically deformable member configured to enable resilient compression of the adjustable member relative to the base member.3. The expandable implant of claim 1 , wherein the control assembly includes a control member received on the control shaft and configured to be received within a control channel on the adjustable member.4. The expandable implant of claim 3 , wherein the control member is elastically deformable to enable resilient compression of the adjustable member relative to the base member.5. The expandable implant of claim 4 , wherein the control member includes at least one slot ...

EXPANDABLE SPINAL INTERBODY AND INTRAVERTEBRAL BODY DEVICES

A device for insertion into a spinal (intervertebral or intravertebral) space is expandable from a first circumference to a second circumference through axial compression of segments of the device, particularly once the device has been properly situated within a vertebral space. The interbody/intravertebral body device is characterized by a plurality of axially stacked, individual segments that are provided on a central insertion and deployment rod. Each segment includes a central plate or body to which are pivotally attached plate or leaf structures. Pivoting of the structures provides a collapsed or unexpanded position of the first circumference and an open or expanded position of the second circumference. 1. An implant for insertion into a spinal space , the implant comprising:a body assembly, the body assembly comprising a first portion moveably coupled to a second portion along a longitudinal axis; anda plurality of support members disposed at least partially between the first portion and the second portion;wherein movement of the second portion relative to the first portion along the longitudinal axis causes the plurality of support members to move radially relative to the longitudinal axis;wherein the plurality of support members slidably engage the first and second portions of the body as the support members move radially relative to the longitudinal axis.2. The implant of claim 1 , further comprising a control member moveably coupling the first portion to the second portion.3. The implant of claim 2 , wherein the first portion is fixedly coupled to the control member and the second portion is slidably received on the control member.4. The implant of claim 3 , further comprising a collar threadingly received on the control member adjacent the second portion claim 3 , wherein rotation of the collar about the control member moves the second portion relative to the first portion and causes the plurality of support members to move radially relative to the ...

Posterior Cross Connector Assembly

A spinal rod cross connector assembly for connection to adjacent spinal rods provides polyaxial positioning of polyaxial heads of the cross connector assembly relative to each spinal rod and which allows adjustment and fixation of the span of a cross connector or arm of the cross connector assembly between the two polyaxial heads through movement of the cross member relative to only one polyaxial head. Each polyaxial head has a clamp that provides attachment to the respective spinal rod and which allows the body of the polyaxial head to rotate relative thereto. Fixation of the orientation of a polyaxial head is achieved through placement and interaction of a set screw in the polyaxial head. The arm is preferably integral with and extends from a lateral side of one of the polyaxial heads. The second one of the polyaxial heads receives the arm and allows length adjustment relative thereto.

ORTHOPEDIC RETRACTOR

A retractor includes a body, a first handle pivotally coupled to the body, a first attachment assembly comprising a first button configured to allow detachment of a second handle portion from the first handle, a first arm assembly attached to the first handle, a first blade attached to the first arm assembly, wherein the first handle is configured to control distraction of the first blade in response to pivotal motion of the first handle, a second handle pivotally coupled to the body, a second attachment assembly comprising a second button configured to allow detachment of a fourth handle portion from the second handle, a second arm assembly attached to the second handle, and a second blade attached to the second arm assembly, wherein the second handle is configured to control distraction of the second blade in response to pivotal motion of the second handle. 1. A retractor comprising:a body;a first handle having a first handle portion pivotally coupled to the body and a second handle portion detachably coupled to the first handle portion;a first attachment assembly comprising a first button configured to allow detachment of the second handle portion from the first handle portion in response to depressing the first button;a first arm assembly attached to the first handle;a first blade attached to the first arm assembly, wherein the first handle is configured to control distraction of the first blade relative to the body in response to pivotal motion of the first handle;a second handle having a third handle portion pivotally coupled to the body and a fourth handle portion detachably coupled to the third handle portion;a second attachment assembly comprising a second button configured to allow detachment of the fourth handle portion from the third handle portion in response to depressing the second button;a second arm assembly attached to the second handle; anda second blade attached to the second arm assembly, wherein the second handle is configured to control ...

Arthroplasty Implants

Arthroplasty implants replace an articulating surface of a bone joint such as bone joints of the foot, and is characterized by a three-component device comprising a bone screw, a button, and a cap. The button incorporates knurling on its distal end to fixate onto bone, a center hole, a spherical pocket to mate with the bone screw for stabilization, and a proximal retention structure to mate with the cap. The bone screw incorporates distal bone (cortical) threads or threading, a spherical head, and a drive structure used to insert the bone screw through the hole of the button and into the bone (e.g. a distal segment of the first metatarsal). The cap incorporates a distal mating structure that retains the cap onto the button, a proximal smooth spherical head that mates with the distal surface of the bone (e.g. a phalange bone), and a tang that prevents rotation after implantation. 1. (canceled)2. (canceled)3. (canceled)4. An implant for replacing an articulating surface of a bone joint , the implant comprising:a bone screw having a head with a top and a rounded underside, a shaft extending from the rounded underside of the head, bone threading on an outside surface of the shaft, and a drive structure in the top of the head configured to receive a drive tool for inserting the bone screw into bone of the bone joint;a button having a distal end configured to be received on bone of the bone joint and having an undersurface with knurling to fixate into the bone of the bone joint, a pocket extending from the distal end and having a bore configured to allow the shaft of the bone screw to pass through but retain the underside of the head of the bone screw, and a rim extending about a proximal end of the button, the rim incorporating a retention structure configured to receive a mating retention structure of the implant; anda cap having a proximal surface configured to articulate with a bone joint, and a distal end having a distal retention structure configured to mate with ...

Lateral Spine Plate With Collapsible Vertebral Attachment Arms

A lateral spine implant has a lateral spine cage and an associated lateral spine plate with one or more folding vertebral attachment arms, each arm configured for attachment to vertebral bone, The ability of the one or more arms to fold allows the lateral spine plate to be inserted/implanted at a lower profile height than traditional lateral spine plates. The lateral spine plate is meant to be used at times of intended or unintended compromise of the anterior longitudinal ligament (ALL) to prevent interbody cage migration, but may be adapted for any lateral plating application. Once expanded, each attachment arm is configured to receive a bone screw for securing the attachment arm to a vertebra, the bone screw retained by rotating cam lock nuts of the attachment arm. 12-. (canceled)3. A spine implant for attachment to a first vertebra and a second vertebra of a spine , the spine implant comprising:an interbody spine cage comprising an insertion hole and configured to be inserted at least partially between the first vertebra and the second vertebra; a first plate having a first hole extending through the first plate;', 'a first arm having a first bone screw bore, a first lateral boss, and a second lateral boss, wherein the first and second lateral bosses are spaced apart and receive a portion of the first plate in a pivoting engagement;', 'wherein the first arm is configured to pivot between a first position and a second position where the first bore is substantially coaxial with the axis and positioned at the top of the body to allow the first bone screw to be received into the lateral side of the first vertebra;, 'a first lateral spine plate assembly comprisinga connector extending through the first hole into the insertion hole on the interbody spine cage to couple the first lateral spine plate assembly to the interbody spine cage.4. The spine implant of claim 3 , further comprising a hinge pin extending through the first lateral boss claim 3 , the portion of the ...

Facet Plate for Implant Expulsion Prevention

A plate and an installation tool are provided for preventing a spinal facet joint implant from expulsing from its implant location between a superior and an inferior vertebra. A k-wire is used in cooperation with the plate and installation tool to guide them to the desired location. The plate includes a central threaded bore situated between one or two superior bone screw or bone connection barb bores and one or two inferior bone screw or bone connection barb bores. The installation tool includes a threaded plug at one end for receipt by the plate's central threaded bore for releasably holding the plate during installation. The installation tool has a superior structure and an inferior structure that can be a cannula or tang depending on the plate's form. 1. A spine implant for preventing expulsion of a spinal facet joint implant from a spinal facet joint between a superior vertebra and an adjacent inferior vertebra , the spine implant comprising:an elongate plate having a longitudinal axis, a generally planar upper surface, a generally planar lower surface, a central internally threaded bore of a first diameter, a first superior bore of a second diameter that is smaller than the first diameter and laterally adjacent the central internally threaded bore, a first superior bore countersink situated in the generally planar upper surface and surrounding the first superior bore, the first superior bore countersink extending from the generally planar upper surface of the elongate plate and into the first superior bore, a second superior bore of the second diameter and laterally adjacent the first superior bore opposite the central internally threaded bore, a second superior bore countersink situated in the generally planar upper surface and surrounding the second superior bore, the second superior bore countersink extending from the generally planar upper surface of the elongate plate and into the second superior bore, a first inferior bore of the second diameter and ...

STEERABLE IMPLANT ASSEMBLY

A steerable expandable implant having a lower support member and an upper support member, the upper support member movable relative to the lower support member between a collapsed position and an expanded position. The implant also includes a first control member coupled to the lower support member, where manipulation of the first control member causes the lower support member to move relative to the upper support member. The implant further includes a pivot member configured to receive a tool, the tool and the pivot member rotatable relative to the lower support member between a first position and a second position, where the pivot member includes an aperture and an axis of the aperture is angularly offset from an axis of the first control member in the first position and the axis of the aperture is angularly aligned with the axis of the first control member in the second position. 1. A steerable expandable implant , comprising:a lower support member configured to engage a first portion of bone;an upper support member coupled to the lower support member and configured to engage a second portion of bone, the upper support member movable relative to the lower support member between a collapsed position and an expanded position;a first control member coupled to the lower support member, wherein manipulation of the first control member causes the lower support member to move relative to the upper support member between the collapsed position and the expanded position; anda pivot member configured to receive a tool such that the tool and the pivot member are rotatable relative to the lower support member between a first position and a second position, and wherein the pivot member includes an aperture and wherein an axis of the aperture is angularly offset from an axis of the first control member in the first position and the axis of the aperture is angularly aligned with the axis of the first control member in the second position.2. The steerable expandable implant of ...

Facet Plate for Implant Expulsion Prevention and Method of Installation

A plate, installation tools, and method of installation are provided for preventing a spinal facet joint implant from expulsing from its location. The plate has posterior and inferior fasteners installed previously or in-situ. A k-wire is used in cooperation with the implant and installation tool(s) to guide the plate to the desired location. The plate includes a central threaded bore situated between a superior and inferior bone screw bore in one form, and a superior and inferior connection barb in another form. The installation tool includes a threaded plug at one end for receipt by the central threaded bore of the plate for releasably holding the plate during installation. The installation tool has a superior structure and an inferior structure that can be a cannula or a tang depending on the form of the plate. A cannula allows a tool to direct a fastener to screw bores of the plate for attaching the fastener and plate to vertebrae. 1. A construct for preventing expulsion of a spinal facet implant from between a superior vertebra and an inferior vertebra , the construct comprising:a plate having a superior bore and an inferior bore; anda plurality of bone fasteners;the plate configured to cover a spinal facet implant and be attached to vertebral bone of a superior vertebra through use of one of the plurality of bone fasteners in the superior bore of the plate and to vertebral bone of an inferior vertebra through use of one of the plurality of bone fasteners in the inferior bore of the plate, and be releasably connectable to an installation tool that is adapted to be guided to the spinal facet implant via a previously installed k-wire.2. The construct of claim 1 , wherein the plurality of fasteners comprise a plurality of one of bone screws and barbs.3. A spinal facet implant expulsion prevention plate as shown and described herein.4. Installation instruments for installing a spinal facet implant expulsion prevention plate as shown and described herein.5. A method ...

Implant for bone fixation

A bone implant, particularly but not necessarily, for fixing bones of the foot is provided having body in the form of a crescent or arced shaped wedge, or a wedge in the shape of a crescent or arc. The crescent shaped wedge has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a bone, eliminating the need to also use a plate. The crescent shape provides a graft area that allows introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the crescent shaped wedge may also have teeth, serrations or the like.

Facet Wedge, Wedge Blocking Plate and Method of Installation

An implant and method for spinal facet joint stabilization uses a wedge and plate adapted to accept prongs of a surgical instrument for installing the implant into a posterior spinal facet joint. The wedge has an anterior end with a threaded bore. A notch in each lateral side of the plate aligns with a groove in each lateral side of the wedge. Each notch and groove pair receives a prong of the surgical instrument to hold the wedge and plate during implantation. A superior tube of the surgical instrument supports a superior rod having an end configured for installing a bone screw attaching the plate to the superior vertebra of the spinal facet joint. An inferior tube of the surgical instrument supports an inferior rod having an end configured to attach to the threaded bore of the wedge along with the plate during introduction of the implant into the spinal facet joint, and installing the set screw to attach the plate to the wedge. 1. An implant for stabilizing a facet joint of the spine comprising:a wedge having a posterior end, an anterior end, a superior side, an inferior side, a first lateral side, a second lateral side, a first groove in the first lateral side and extending a first distance from the anterior end towards the posterior end, a second groove in the second lateral side and extending a second distance from the anterior end towards the posterior end, and a threaded bore in the anterior end extending towards the posterior end and adapted to receive one or more threaded components for installing the wedge in a spinal facet joint; anda plate having a front side, a rear side, a superior end, an inferior end, a third lateral side, a fourth lateral side, a superior bore in the superior end extending from the front side to the rear side and adapted to receive a bone screw, an inferior bore in the inferior end extending from the front side to the rear side and adapted to receive the one or more threaded components, a first notch in the third lateral side ...

Implant For Bone Fixation

A bone implant, particularly but not necessarily, for fixing bones of the foot is provided having body in the form of a crescent or arced shaped wedge, or a wedge in the shape of a crescent or arc. The crescent shaped wedge has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a bone, eliminating the need to also use a plate. The crescent shape provides a graft area that allows introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the crescent shaped wedge may also have teeth, serrations or the like. 1. A bone implant comprising:a crescent shaped body defining a curved top having a first width, an arced bottom defining a first leg at a first end of the arced bottom and a second leg at a second end of the arced bottom, the first and second legs having a second width that is less than the first width of the curved top, a first slanted side, a second slanted side opposite the first slanted side, a first curved lateral side, and a second curved lateral side opposite the first curved lateral side, the first slanted side extending from a first curved side of the curved top to the first and second legs of the arced bottom, the second slanted side extending from a second curved side of the curved top to the first and second legs of the arced bottom, the first curved lateral side extending from a first curved lateral side of the curved top to the first leg of the arced bottom, and the second curved lateral side extending from a second curved lateral side of the curved top to the second leg of the arced bottom;a first bore extending from the first curved lateral side of the curved top to the second slanted side; anda second bore extending from the second curved lateral side of the curved top to the first slanted side.2. The bone implant of claim 1 , further comprising:a threaded bore in the curved top between the first bore and the second bore.3. The bone implant of claim 1 , ...

Spinal Interbody Cage Implant With Flexible Barbs

A spinal interbody cage implant includes a cage, an endplate, and flexible barbs. The endplate is separately attached to the cage and is configured to receive, hold and direct a flexible barb into an upper vertebral surface and a flexible barb into a lower adjacent vertebral surface. Each proximal leg of the cage is configured to receive the endplate, and has a lateral bore that receives a pin which retains the endplate. The endplate directs a first flexible barb upwardly toward an upper vertebral surface, and directs a second flexible barb downwardly toward a lower vertebral surface. Each flexible barb has a proximal head, a shaft extending from the head with a bore extending from the head to its distal end. Teeth are provided along the exterior surface of the shaft with two flats disposed on opposite sides thereof with a slit extending from the distal end towards the head. 1. A spinal implant comprising:an interbody cage;an endplate defining an upper surface, a lower surface, a front face, and a rear face; andattachment barbs, each attachment barb having a flexible tubular body defining a longitudinal axis with a head on a proximal end of the longitudinal axis, and a tip on a distal end of the longitudinal axis, a first flat on an exterior of the flexible tubular body extending from the tip to the head, and a second flat on the exterior of the flexible tubular body extending from the tip to the head and opposite the first flat, the first and second flats defining a first longitudinal surface between one side of the first flat and one side of the second flat, and a second longitudinal surface between another side of the first flat and another side of the second flat, first teeth situated on the first longitudinal surface of the flexible tubular body, and second teeth situated on the second longitudinal surface of the flexible tubular body;the interbody cage having a body defining a first cavity, a first leg extending from the body and having a first end, and a ...

Expandable Lateral Spine Cage With Reverse Dovetail Configuration

A spinal interbody implant includes a two-component cage and expander. The two-component cage, when assembled, accepts the expander through a reverse dovetail configuration between the assembled cage and the expander. The expander has a pair of legs that move within and along lateral channels formed by and between the two cage components for increasing the height of the two cage components relative to one another. The amount of expansion of the cage is determined by the height of the pair of expander legs. The cage accepts different expanders each having pairs of legs of different heights in order to provide different amounts of cage expansion and thus the interbody implant. The front of each expander leg is arch shaped for reception in the lateral channels of the assembled cage and to progressively expand the two cage components relative to one another as the expander is received by the assembled cage. 1. A lateral spinal interbody implant comprising:a first cage section;a second cage section; andan expander;the first and second cage sections received together to create an interbody cage whose height is determined by reception of the expander.2. The lateral spinal interbody implant of claim 1 , wherein:the first cage section has a first lateral side slot, and a second lateral side slot;the second cage section has a third lateral side slot, and a fourth lateral side slot; andthe first lateral side slot of the first cage section and the third lateral side slot of the second cage section forming a first lateral channel along a first lateral length of the interbody cage, and a second lateral side slot of the first cage section and the fourth lateral slot of the second cage section forming a second lateral channel along a second lateral length of the interbody cage;the expander having an end, a first leg extending from the end and defining a first proximal end adjacent a first side of the end and a first distal end, and a second leg extending from the end and defining a ...

Modular Telescoping Surgical Instrument

A surgical instrument provides rotational and axial variations of a working end relative to a handle of the surgical instrument for configuration flexibility of the working end. An internal configuration of the handle of the surgical instrument accepts a retention portion of the working end in several positions. The working end can be varied in axial length relative to a front end of the handle and in axial position relative to the extension of the working end from the front end of the handle. A retention mechanism interacts with the handle and the working end to fix a position of the working end in the handle. The working end may be shaped to provide a bayonet version wherein the working end extends from the front end of the handle offset from the handle's longitudinal center, and a non-bayonet version wherein the working end extends from the handle's longitudinal center. 1. A surgical instrument comprising:a handle having a configured opening at a front end thereof, a first axial bore extending longitudinally into the handle from the configured opening offset from a center longitudinal axis of the handle, and a second axial bore extending longitudinally into the handle from the configured opening coaxial with the center longitudinal axis of the handle;a working end having a rear portion, an angled middle portion, and a front portion adapted to carry a working tool, the rear portion configured for reception in the first or second axial bore wherein when the rear portion of the working end is received in the first axial bore the front portion of the working end extends from the front end of the handle co-axial with a center longitudinal axis of the handle, and when the rear portion of the working end is received in the second axial bore the front portion of the working end extends from the front end of the handle at a longitudinal axis of the handle that is offset from the center longitudinal axis of the handle; anda retention mechanism configured to interact with ...

3-D Printed Orthopedic Implants

A spinal interbody implant is fabricated using 3-D printing to provide an engineered structure of one or more porous, permeable, or non-solid portions with or without one or more solid, dense, or micro-dense portions. The porous, permeable, or non-solid structure can be a mesh, lattice, web, weave, honeycomb, simple cubic, tetrahedral, diamond, or otherwise with the number and size of its pores, holes, perforations, or openings, as well as the distance or thickness between them, can vary accordingly. Some portions of the porous, permeable, or non-solid structure(s) may have porosities and/or thicknesses different than other portions. The solid, dense, or micro-dense structure may be constant throughout the body of the implant or may be a range of densities throughout the body of the implant. Alternately, one or more portions of the implant may have a range of densities throughout its body ranging from solid to a maximum porosity. 1. A 3-D printed orthopedic implant comprising:a body;the body having a porous structure; andthe body having a non-porous structure.2. The 3-D printed orthopedic implant of claim 1 , further comprising an opening extending completely through the body.3. The 3-D printed orthopedic implant of claim 1 , wherein the non-porous structure has a density that is constant throughout its volume.4. The 3-D printed orthopedic implant of claim 1 , wherein the non-porous structure has a density that is variable throughout its volume.5. A 3-D printed spinal implant comprising:an exterior structure of a non-porous biocompatible material; andan interior structure of a porous biocompatible material;the exterior structure having one or more cutouts that expose the interior structure.6. The 3-D printed spinal implant of claim 5 , wherein:the interior structure comprises one of a matrix, a lattice, or a mesh.7. The 3-D printed spinal implant of claim 5 , wherein:the non-porous biocompatible material comprises one of titanium, stainless steel, an alloy of ...

Bone Compression Screws

Bone compression screws are characterized by a two-piece compression screw assembly comprising a screw component and a sleeve component. The screw component has external male bone screw threading at a distal end, external male machine screw threading on a proximal end, and a smooth shank between the threaded distal and proximal ends. The screw component may be solid, cannulated, slotted, fenestrated, fluted, helically fluted, or any combination thereof. The sleeve component has external male bone screw threading with a pitch that can be equal to, smaller than, or greater than the thread pitch of the screw component, an internal bore extending from a proximal end of the sleeve component to the distal end of the sleeve component and sized for reception over the proximal end of the screw component. Internal female machine screw threading is configured to mate with the external male machine screw threading of the screw component. 1. A bone compression screw comprising:a screw component; anda sleeve component having a central bore extending from a first end to a second end;the screw component having a proximal end, a middle section, and a distal end, the proximal end having first threading, and the distal end having second threading, the first threading defining a first diameter and the second threading defining a second diameter, wherein the first diameter is less than the second diameter; andthe sleeve component having third threading on an inside surface of the central bore and configured to be received on the first threading of the proximal end of the screw component, and fourth threading on an outside surface of the sleeve component.2. The bone compression screw of claim 1 , wherein the first threading of the proximal end of the screw component and the third threading of the sleeve component are machine screw threading claim 1 , and the first threading of the distal end of the screw component and the fourth threading of the sleeve component are bone screw threading. ...

Orthopedic Retractor for Lateral Spine Surgery

A spine retractor provides lateral access to the spine for distracting soft tissue and psoas muscle for spinal fusion procedures utilizing position controllable blades. The retractor allows concerted linear distraction of two lateral blades and separate linear distraction of one medial blade. Individual angulation assemblies associated with each blade provides separately controllable angulation. Handles attached to the two lateral blades control their distraction while a medial knob controls medial blade distraction. An expansion knob associated with each handle provides individually precise distraction of its associated blade. Each angulation assembly comprises an angulation knob that threads into a distal arm of a blade holder assembly and is received into a spherical ball seated in a spherical pocket in a mating proximal arm of the blade holder assembly. Torque applied to the spherical ball by the angulation knob causes distal arm angulation relative to the proximal. Each distal arm holds a blade assembly having a blade. 1. A medical retractor for lateral spine surgical procedures comprising:a body;a first handle pivotally attached to the body;a first lateral arm assembly attached to the first handle;a first lateral blade attached to the first lateral arm assembly, the first handle controlling distraction of the first lateral blade relative to the body through movement of the first lateral arm assembly by pivotal motion of the first handle;a first distraction control assembly associated with the first handle and the body, and configured to adjust pivotal position of the first handle to adjust distraction of the first blade;a first angulation assembly associated with the first lateral arm assembly and configured to adjust angular orientation of the first lateral blade through angulation of the first lateral arm assembly;a second handle pivotally attached to the body;a second lateral arm assembly attached to the second handle;a second lateral blade attached to the ...

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant includes an upper main support, a lower main support, an upper pivoting support, and a lower pivoting support. The upper main support and the upper pivoting support are configured to engage a first portion of bone, and the lower main support is coupled to the upper main support and configured to engage a second portion of bone. The upper main support is adjustable relative to the lower main support to adjust height of the implant. The upper pivoting support is rotatably movable relative to the upper main support. The lower pivoting support is coupled to the upper pivoting support, configured to engage the second bone portion, and is rotatably movable relative to the lower main support. Adjusting the upper main support relative to the lower main support causes adjustment of the upper pivoting support relative to the lower pivoting support. 1. An expandable implant , comprising:an upper main support configured to engage a first portion of bone;a lower main support coupled to the upper main support and configured to engage a second portion of bone, wherein the upper main support is adjustable relative to the lower main support to adjust a height of the expandable implant;an upper pivoting support configured to engage the first portion of bone, wherein the upper pivoting support is rotatably movable relative to the upper main support; anda lower pivoting support coupled to the upper pivoting support and configured to engage the second portion of bone, wherein adjustment of the upper main support relative to the lower main support causes a corresponding adjustment of the upper pivoting support relative to the lower pivoting support, and wherein the lower pivoting support is rotatably movable relative to the lower main support.2. The expandable implant of claim 1 , wherein the upper pivoting support and the lower pivoting support rotate about distal ends of the upper main support and the lower main support.3. The expandable implant of claim 1 , ...

Lateral Spine Plate with Collapsible Vertebral Attachment Arms

A lateral spine implant has a lateral spine cage and an associated lateral spine plate with one or more folding vertebral attachment arms, each arm configured for attachment to vertebral bone. The ability of the one or more arms to fold allows the lateral spine plate to be inserted/implanted at a lower profile height than traditional lateral spine plates. The lateral spine plate is meant to be used at times of intended or unintended compromise of the anterior longitudinal ligament (ALL) to prevent interbody cage migration, but may be adapted for any lateral plating application. Once expanded, each attachment arm is configured to receive a bone screw for securing the attachment arm to a vertebra, the bone screw retained by rotating cam lock nuts of the attachment arm.

Expandable Wedge Implant for Osteotomies of the Extremities

An expandable wedge implant for wedge osteotomies of the extremities has first and second components which are pivotally attached to each other such that up and down pivoting of the two components relative to one another causes increase and decrease of implant height. A pivot control structure is operably coupled to and between the two components to effect pivoting. Linear movement of a threaded ball on a threaded shaft associated with the first component while the threaded ball is concurrently constrained within an angled channel of the second component causes pivoting of the second component relative to the first component. Anchoring members associated with the first and second components attach the implant to adjacent vertebral bodies.

IMPLANT FOR IMMOBILIZING CERVICAL VERTEBRAE

A spinal implant for immobilizing the C1 vertebra with respect to the C2 vertebra of the spine provides controlled coupling between the C1 and C2 vertebrae, and includes a C1 component attachable to the C1 vertebra, two C2 components attachable to the C2 vertebra, and a transverse element. The C1 component has two wings each of which retains a rod holder that rotates and translate for capturing a C2 component rod. Each C2 component has a hook for connection with a side of the C2 vertebra lamina and a rod for attachment to one of the rod holders of the C1 component. Each C2 component receives and secures the transverse connector which holds position of the C2 components relative to one another. Each C2 component may include a plate configured for compression against the C2 vertebra spinous process, with each plate including spikes to aid in preventing construct migration. 1. An implant for immobilizing a first vertebra relative to a second vertebra , the implant comprising:a first component having a hook for attachment to a posterior arch of the first vertebra, a right wing, a left wing, a right element holder situated on the right wing, and a left element holder situated on the left wing, the right element holder free to translate laterally along the right wing and translate rotationally with respect to the right wing, the left element holder free to translate laterally along the left wing and translate rotationally with respect to the left wing;a second component having a body configured to abut the second vertebra, a first rod holder extending from the body, and a first post extending from the body and configured to be received in the right element holder of the first component;a third component having a body configured to abut the second vertebra of the spine, a second rod holder extending from the body, and a second post extending from the body and configured to be received in the left element holder of the first component; anda rod configured to be received in ...

RADIALLY EXPANDABLE SPINAL INTERBODY DEVICE AND IMPLANTATION TOOL

A radially expandable spinal interbody device for implantation between adjacent vertebrae of a spine is deliverable to an implant area in a radially collapsed state having minimum radial dimensions and once positioned is then radially expandable through and up to maximum radial dimensions. The expanded radially expandable spinal interbody device is configured to closely mimic the anatomical configuration of a vertebral face. The radially expandable spinal interbody device is formed of arced, pivoting linkages that allow transfiguration from the radially collapsed minimum radial dimensions through and up to the radially expanded maximum radial dimensions once deployed at the implant site (i.e. between adjacent vertebrae). The pivoting linkages have ends with locking features that inhibit or prevent overextension of the linkages. In one form of the locking features, one end of the linkage includes lobes that form a pocket while the other end of the linkage includes a projection that is adapted to be received in the pocket of the lobes of an adjacent linkage. A kit is also provided including a tool for the implantation and deployment of the spinal interbody device into an intervertebral space. 1. A spinal interbody device comprising:a base link having a first end and a second end; a first link having a first end coupled to the first end of the base link and a second end;', 'a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link; and, 'a linkage comprisingan adjustment screw provided in the second end of the base link and configured to engage the second end of the second link to move the linkage between a collapsed position and an expanded position.2. The spinal interbody device of claim 1 , wherein the first end of the base link and the first end of the second link are formed of a polymer material and wherein the second end of the base link and the second end of the second link are formed ...

Steerable TLIF Spine Implant, Installer, and Method of Installation

A spine implant for a TLIF surgical procedure is configured to be guided into place during implantation in conjunction with a complementary insertion instrument. The cage of the implant is constrained to a limited range of rotation about a pivoting post carried by the cage. The insertion instrument is configured to hold the post while controllably rotating the cage relative to the post in order to angularly position the implant during implantation. Range of rotational motion is controlled by the configuration of an opening in and end of the cage and a groove in the pivot post. A retaining pin of the implant extends from the cage into the groove of the post to rotationally connect the cage to the post.

Compression Screw Systems for Compressing Bones of the Extremities

Compression screw systems for stabilizing and/or compressing bones of the extremities, characterized by a compression screw component and a hook component. The hook component is received on the compression screw component in any rotational position relative to the compression screw component in order to orient the hook component relative to a bone or bones requiring stabilization and/or compression. The hook component includes an anti-rotation feature, while a configured flange thereof provides a hook that extends about and overhangs a part of the bone. The compression screw component and the hook component may include cooperating structures that allow the hook component to attach to the compression screw component or allow the compression screw component to self-orientate with respect to the hook component upon compressing engagement of the compression screw head with the hook component. The configured flange of the hook component may terminate with a single, double or multiple tined prong. 1. A compression screw system for bones of the extremities comprising:a compression screw component; anda hook component;the compression screw component having a shaft, a tip on a distal end of the shaft, bone screw threading about the tip, and a screw head on a proximate end of the shaft, the head having a top with a configured socket, and a curved undersurface extending from a bottom of the screw head to the shaft; andthe hook component having an annular head defining a bore with an angled inlet configured complementary to the curved undersurface of the compression screw head, a plurality of spikes extending axially from and positioned radially about an outlet of the bore, and a flange extending from a radial side of the annular head, the flange having a neck extending transverse to the radial side of the annular head, and a projection extending from and transverse to an end of the neck distal the annular head;the compression screw component received in the bore of the annular ...

EXPANDABLE IMPLANT ASSEMBLY

An expandable implant includes an upper portion configured to engage a first portion of bone, a bottom portion configured to engage a second portion of bone, a control assembly coupled to the upper portion and the bottom portion and configured to control relative movement between the upper portion and the bottom portion, wherein the control assembly includes a front portion and a control member, wherein the front portion has an aperture configured to receive the control member, wherein the control member includes a head, and wherein a portion of the head is positioned outside of the aperture as the implant is expanded between a first, collapsed orientation and a second, expanded orientation. 1. An expandable implant , comprising:an upper portion configured to engage a first portion of bone;a bottom portion configured to engage a second portion of bone;a control assembly coupled to the upper portion and the bottom portion and configured to control relative movement between the upper portion and the bottom portion, wherein the control assembly includes:a front portion;a rear portion;a control shaft coupled to the front portion and the rear portion, where the control shaft includes a first end having a head portion at least partially located to an exterior of front portion.2. The implant of claim 1 , wherein the front portion is longitudinally fixed relative to the control shaft claim 1 , and the rear portion is configured to move longitudinally relative to the control portion.3. The implant of claim 1 , wherein the rear portion comprises an aperture having a first interior diameter;wherein the head portion includes an outer ring having a second exterior diameter, larger than the first interior diameter; andwherein the head portion includes an access ring having a third exterior diameter, smaller than the first interior diameter.4. The implant of claim 3 , wherein the access ring has a retention groove having a fourth exterior diameter smaller than the third exterior ...

Self-contained assembly for installation of orthopedic implant components onto an orthopedic implant

A self-contained orthopedic implant component assembly provides for concerted or concerted and independent installation of orthopedic components onto an orthopedic implant. The assembly includes a first orthopedic component formation for installation of a first orthopedic component thereof onto the orthopedic implant and a second orthopedic component formation for installation of a second orthopedic component thereof onto the orthopedic implant. The second orthopedic implant formation is carried by the first orthopedic implant formation such that installation of the first orthopedic implant formation into the orthopedic implant at least partially installs the second orthopedic implant formation into the orthopedic implant. One or both of the first and second orthopedic component formations includes a component driver for receipt of installation torque whereby application of rotational torque installs the orthopedic component(s) onto the orthopedic implant. A component driver is detachable from its formation during or after installation of the corresponding orthopedic component depending on form of the self- contained orthopedic implant component assembly.

Expandable lateral spine cage with reverse dovetail configuration

A spinal interbody implant (10) includes a two-component cage (11) and expander (66). The two-component cage (11), when assembled, accepts the expander (66) through a reverse dovetail configuration between the assembled cage (11) and the expander (66). The expander (66) has a pair of legs (70, 72) that move within and along lateral channels (64, 65) formed by and between the two cage components (12, 14) for increasing the height of the two cage components relative to one another. The amount of expansion of the cage (11) is determined by the height of the pair of expander legs (70, 72). The cage (11) accepts different expanders (66) each having pairs of legs of different heights in order to provide different amounts of cage expansion and thus the interbody implant. The front (71, 73) of each expander leg (70, 72) is arch shaped for reception in the lateral channels (64, 65) of the assembled cage (11) and to progressively expand the two cage components (12, 14) relative to one another as the expander (66) is received by the assembled cage (11).

Expandable implant assembly

An expandable implant includes a base member including a top surface, a first end, and a second end, and defining a central cavity positioned between the first end and the second end; an adjustable member including a top surface and at least one control channel, wherein the adjustable member is adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position; a control shaft rotatable received by the base member, wherein rotation of the control shaft cause relative movement of the adjustable member relative to the base member; and at least one control member received on the control shaft and by the control channel, wherein rotation of the control shaft causes the control member to translate along the control shaft and along the control channel.

Implant for bone fixation

A bone implant, particularly but not necessarily, for fixing bones of the foot is provided having body in the form of a crescent or arced shaped wedge, or a wedge in the shape of a crescent or arc. The crescent shaped wedge has bone screw bores that are each configured to hold a bone screw at a particular angle for receipt in a bone, eliminating the need to also use a plate. The crescent shape provides a graft area that allows introduction and retention of bone graft material to promote bone fusion. One or both tapered sides of the crescent shaped wedge may also have teeth, serrations or the like.

Expandable spinal interbody assembly

An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of vertebral bone; a bottom support assembly defining a lower surface configured to engage a second portion of vertebral bone; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position. In the collapsed position, the upper surface is generally parallel to the lower surface, and in the expanded position, a portion of the upper surface extends at an acute angle relative to a portion of the lower surface.

Posterior cervical cross connector assemblies

A spinal cross connector head assembly and a cross connector assembly utilizing the spinal cross connector head assembly are configured for fixation to an existing spinal rod bone screw head. The spinal cross connector head assembly has one or more components which incorporate one or more breakaway portions that aid in the installation of the cross connector head assembly onto a polyaxial spinal rod bone screw assembly. The spinal cross connector assembly includes first and second spinal cross connector head assemblies each of which is configured for fixation to existing, adjacent spinal rod screw heads and connection with a cross connector rod.

Expandable wedge implant for osteotomies of the extremities

An expandable wedge implant for wedge osteotomies of the extremities has first and second components which are pivotally attached to each other such that up and down pivoting of the two components relative to one another causes increase and decrease of implant height. A pivot control structure is operably coupled to and between the two components to effect pivoting. Linear movement of a threaded ball on a threaded shaft associated with the first component while the threaded ball is concurrently constrained within an angled channel of the second component causes pivoting of the second component relative to the first component. Anchoring members associated with the first and second components attach the implant to adjacent vertebral bodies.

Facet wedge, wedge blocking plate and method of installation

An implant and method for spinal facet joint stabilization uses a wedge and plate adapted to accept prongs of a surgical instrument for installing the implant into a posterior spinal facet joint. The wedge has an anterior end with a threaded bore. A notch in each lateral side of the plate aligns with a groove in each lateral side of the wedge. Each notch and groove pair receives a prong of the surgical instrument to hold the wedge and plate during implantation. A superior tube of the surgical instrument supports a superior rod having an end configured for installing a bone screw attaching the plate to the superior vertebra of the spinal facet joint. An inferior tube of the surgical instrument supports an inferior rod having an end configured to attach to the threaded bore of the wedge along with the plate during introduction of the implant into the spinal facet joint, and installing the set screw to attach the plate to the wedge.

Steerable tlif implant and installer

A spine implant for a TLIF surgical procedure is configured to be guided into place during implantation in conjunction with a complementary insertion instrument. The cage of the implant is constrained to a limited range of rotation about a pivoting post carried by the cage. The insertion instrument is configured to hold the post while controllably rotating the cage relative to the post in order to angularly position the implant during implantation. Range of rotational motion is controlled by the configuration of an opening in and end of the cage and a groove in the pivot post. A retaining pin of the implant extends from the cage into the groove of the post to rotationally connect the cage to the post.

Self-contained assembly for installation of orthopedic implant components onto an orthopedic implant

A self-contained orthopedic implant component assembly provides for concerted or concerted and independent installation of orthopedic components onto an orthopedic implant. The assembly includes a first orthopedic component formation for installation of a first orthopedic component thereof onto the orthopedic implant and a second orthopedic component formation for installation of a second orthopedic component thereof onto the orthopedic implant. The second orthopedic implant formation is carried by the first orthopedic implant formation such that installation of the first orthopedic implant formation into the orthopedic implant at least partially installs the second orthopedic implant formation into the orthopedic implant. One or both of the first and second orthopedic component formations includes a component driver for receipt of installation torque whereby application of rotational torque installs the orthopedic component(s) onto the orthopedic implant. A component driver is detachable from its formation during or after installation of the corresponding orthopedic component depending on form of the self- contained orthopedic implant component assembly.

Systems for spinal rod insertion and reduction

3-d printed orthopedic implants

A spinal interbody implant is fabricated using 3-D printing to provide an engineered structure of one or more porous, permeable, or non-solid portions with or without one or more solid, dense, or micro-dense portions. The porous, permeable, or non-solid structure can be a mesh, lattice, web, weave, honeycomb, simple cubic, tetrahedral, diamond, or otherwise with the number and size of its pores, holes, perforations, or openings, as well as the distance or thickness between them, can vary accordingly. Some portions of the porous, permeable, or non-solid structure(s) may have porosities and/or thicknesses different than other portions. The solid, dense, or micro-dense structure may be constant throughout the body of the implant or may be a range of densities throughout the body of the implant. Alternately, one or more portions of the implant may have a range of densities throughout its body ranging from solid to a maximum porosity.

Expandable spinal interbody assembly

An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of bone, a first central aperture extending from the upper surface to an interior of the implant, and a first grid structure surrounding the first central aperture; a bottom support assembly defining a lower surface configured to engage a second portion of bone, a second central aperture extending from the lower surface to the interior, and a second grid structure surrounding the second central aperture; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position.

Posterior spinal prosthesis

A posterior spinal prosthesis is configured to cover exposed portions of a spinal column especially, but not necessarily, as a result of a medical procedure and particularly, as a result of the removal the spinous processes and/or the spinous process and laminar hoods from the one or more vertebrae. A plate forming the prosthesis is connectable to spine rod constructs implanted on lateral sides of the vertebrae and projects in the posterior direction relative to the connection. The plate is generally curved in the superior/inferior direction to provide either a lordotic or kyphotic curvature depending on the portion of the spine to which the prosthesis is utilized. As such, the posterior spinal prosthesis may be used on any portion of the spine such as the cervical vertebrae, the thoracic vertebrae and/or the lumbar vertebrae. The present posterior spinal prosthesis also provides posterior stabilization of the associated vertebrae.

Laminoplasty rod system

A laminoplasty rod system that allows for variable angulation, translation and rotation of a spinal lamina bone portion associated with a laminoplasty. The laminoplasty rod is configured for use with a polyaxial spinal rod bone screw assembly that is adapted to be anchored to the vertebra associated with the laminoplasty, and is attachable to the spinal lamina bone portion. The laminoplasty rod system is characterized by a configured laminoplasty rod that fits into or onto the head of a polyaxial spinal rod bone screw assembly. A bone screw boss, defining a bone screw attachment configuration, is formed at one end of the laminoplasty rod. Preferably, the bone screw boss is situated at an angled end of the rod having a pre-defined bend that provides for greater variation in rod orientation.

Expandable implant assembly

An expandable implant is disclosed. The expandable implant includes a base member having a top surface and a bottom surface opposite the top surface, and an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position. The adjustable member has a top surface and a bottom surface opposite the top surface. The top surface of the adjustable member and the bottom surface of the base member form a first angle while the adjustable member is in the first, collapsed position, and the top surface of the adjustable member and the bottom surface of the base member form a second angle while the adjustable member is in the second, expanded position. The first angle is different from the second angle.

Spinal interbody cage implant with flexible barbs

A spinal interbody cage implant (27) includes a cage (23), an endplate (25), and flexible barbs (10). The endplate (25) is separately attached to the cage (23) and is configured to receive, hold and direct a flexible barb (10) into an upper vertebral surface and a flexible barb (10) into a lower adjacent vertebral surface. First and second legs (30, 31) of the cage (23) is configured to receive the endplate (25), and has lateral bores (42, 43) that receives a pin (28) which retains the endplate. The endplate (25) directs a first flexible barb (10) upwardly toward an upper vertebral surface, and directs a second flexible barb (10) downwardly toward a lower vertebral surface. Each flexible barb (10) has a proximal head (14), a shaft (11) extending from the head with a bore (15) extending from the head (14) to its distal end (13). Teeth (12) are provided along the exterior surface of the shaft (11) with two flats (17, 19) disposed on opposite sides thereof with slits (16, 18) extending from the distal end (13) towards the head (14).

Steerable implant, installer, and method of installation

A spine implant for a TLIF surgical procedure is configured to be guided into place during implantation in conjunction with a complementary insertion instrument. The cage of the implant is constrained to a limited range of rotation about a pivoting post carried by the cage. The insertion instrument is configured to hold the post while controllably rotating the cage relative to the post in order to angularly position the implant during implantation. Range of rotational motion is controlled by the configuration of an opening in and end of the cage and a groove in the pivot post. A retaining pin of the implant extends from the cage into the groove of the post to rotationally connect the cage to the post.

Articulating pituitary rongeur for use with a cannula

A pituitary rongeur medical instrument (10) has jaws (34) that can controllably articulate radially from a longitudinal axis (LA) of a shaft assembly (24) of the pituitary rongeur and beyond a perimeter of a cannula (60) during use. The pituitary rongeur (10) is characterized by a handle (12), the shaft assembly (24) defining a proximal end (15) extending from the handle (12), a distal end (19), and a longitudinal axis (LA), with the jaws (34) pivotally connected to the distal end (19) of the shaft assembly (24) for articulating radial movement of the jaws (34) relative to the longitudinal axis (LA) of the shaft assembly (24), a jaw controller (28) associated with the shaft assembly (24) and configured to controllably close and open the jaws (34), and an articulation controller (30) associated with the shaft assembly (24) and configured to controllably articulate the jaws (34). The handle (12) is formed by a handgrip portion (13) configured to receive a palm of a user and a lever portion (16) with a finger loop (17) configured to receive fingers of the user.

Expandable implant assembly

An expandable implant includes an upper main support, a lower main support, an upper pivoting support, and a lower pivoting support. The upper main support and the upper pivoting support are configured to engage a first portion of bone, and the lower main support is coupled to the upper main support and configured to engage a second portion of bone. The upper main support is adjustable relative to the lower main support to adjust height of the implant. The upper pivoting support is rotatably movable relative to the upper main support. The lower pivoting support is coupled to the upper pivoting support, configured to engage the second bone portion, and is rotatably movable relative to the lower main support. Adjusting the upper main support relative to the lower main support causes adjustment of the upper pivoting support relative to the lower pivoting support.

Two-piece spine implant installation instrument for use with an endoscope

A two-piece medical instrument (10) for installing an expandable interbody (intervertebral) spine implant via an endoscope (200), has a handle assembly (12) and a shaft assembly (14) configured for extension through the endoscope, the shaft assembly holding an expandable interbody spine implant (250) when the shaft assembly is fully received by a head (20) of the handle assembly, and releasing the spine implant upon retraction of the shaft assembly from the head of the handle assembly. The shaft assembly has a rod (40) with a longitudinal bore (42) and a sleeve (55) situated on the rod that axially moves relative to the rod in response to the reception into and retraction from the handle assembly head, with the sleeve controlling capture and release of the implant by the rod. The distal end (46) of the rod has a clamp (48) formed by jaws (51, 53) that flex to capture and release the implant.

Medical instrument for dislodging vertebral disc material from a vertebral disc in a vertebral disc space via a cannula

A medical instrument (100) for dislodging vertebral disc material from a vertebral disc in a vertebral disc space via a cannula has a pivoting scoop structure (121) with a scoop (110) that provides a 180° pivot sweep outside of the perimeter of the cannula (50). The medical instrument (100) has an elongate body (102) defining a longitudinal axis with the pivoting scoop structure (121) situated at a distal end (136) of the elongate body (102). The elongate body (102) has a first elongate shaft (103) and a second elongate shaft (104) situated on and configured for longitudinal axial translation relative to the first elongate shaft (103). Axial movement of the second elongate shaft (104) controllably swivels the pivoting scoop structure (121) from, through, and between 0° to 180° relative to the longitudinal axis of the elongate body (102). The scoop structure (121) may also allow for collection and removal of dislodged vertebral disc material.

Steerable implant assembly

A steerable expandable implant having a lower support member and an upper support member, the upper support member movable relative to the lower support member between a collapsed position and an expanded position. The implant also includes a first control member coupled to the lower support member, where manipulation of the first control member causes the lower support member to move relative to the upper support member. The implant further includes a pivot member configured to receive a tool, the tool and the pivot member rotatable relative to the lower support member between a first position and a second position, where the pivot member includes an aperture and an axis of the aperture is angularly offset from an axis of the first control member in the first position and the axis of the aperture is angularly aligned with the axis of the first control member in the second position.