Patent application number | Description | Published |
20100082029 | Static Compression Device - A Static Compression Device (SC device) for active, measurable compression of a fusion graft by the surgeon at the time of surgery is disclosed. The SC device is attachable to adjacent vertebral bodies or other pieces of bone and has a device that applies compressive force to the adjacent vertebral bodies or pieces of bone to assist fusion according to Wolffs law. The SC device has a locking mechanism that maintains the compression applied at surgery, but prevents further compression (settling) from occurring after surgery. The SC device allows the surgeon the ability to compress a segment, measure the applied compression, and lock the segment in the compressed position. In one embodiment of the invention, the pressure is applied to the SC device through a compression device that applies a desired and measurable amount of force. In this embodiment, the combination of the SC device with a pressure applying and measuring device allows the surgeon more control over the force applied to a cervical, thoracic or lumbar implant than has previously been available. In the preferred embodiment, the SC device compresses two or more adjacent vertebrae across an adjacent bone graft to facilitate fusion of these vertebrae to treat pain produced by pressure from the disks between such vertebrae bulging and resulting in contact with and pressure on the spinal cord and adjacent nerve roots. In other embodiments, the SC device may be used to apply measurable compression across any type of bony interface (e.g. fractures) to facilitate union. | 04-01-2010 |
20100114176 | Static Compression Device - A Static Compression Device (SC device) for active, measurable compression of a fusion graft by the surgeon at the time of surgery is disclosed. The SC device is attachable to adjacent vertebral bodies or other pieces of bone and has a device that applies compressive force to the adjacent vertebral bodies or pieces of bone to assist fusion according to Wolff's law. The SC device has a locking mechanism that maintains the compression applied at surgery, but prevents further compression (settling) from occurring after surgery. The SC device allows the surgeon the ability to compress a segment, measure the applied compression, and lock the segment in the compressed position. In one embodiment of the invention, the pressure is applied to the SC device through a compression device that applies a desired and measurable amount of force. In this embodiment, the combination of the SC device with a pressure applying and measuring device allows the surgeon more control over the force applied to a cervical, thoracic or lumbar implant than has previously been available. In the preferred embodiment, the SC device compresses two or more adjacent vertebrae across an adjacent bone graft to facilitate fusion of these vertebrae to treat pain produced by pressure from the disks between such vertebrae bulging and resulting in contact with and pressure on the spinal cord and adjacent nerve roots. In other embodiments, the SC device may be used to apply measurable compression across any type of bony interface (e.g. fractures) to facilitate union. | 05-06-2010 |
20110190888 | Composite Interbody Device And Method of Manufacture - A composite interbody device includes superior and inferior endplates with a plastic core molded therebetween. The core includes one or more features for permitting bone growth through the core. Each endplate includes a bone interface side coated with hydroxyapatite, for promoting bone on-growth. Pores in the bone interface sides permit bone in-growth. Core interface sides of the endplates include relatively larger pores for accepting molten material from the core, for example during injection molding, to enhance bonding of the endplates with the core. Each endplate has a central barrier layer for preventing the molten core material from extruding through the core interface pores into the bone interface pores, reserving the bone interface pores for bone in-growth. A method of manufacturing the composite interbody device is also disclosed. | 08-04-2011 |
20120167367 | Methods For Enhancing An Interbody Device - A composite interbody device includes superior and inferior endplates with a plastic core molded therebetween. The core includes one or more features for permitting bone growth through the core. Each endplate includes a bone interface side coated with hydroxyapatite, for promoting bone on-growth. Pores in the bone interface sides permit bone in-growth. Core interface sides of the endplates include relatively larger pores for accepting molten material from the core, for example during injection molding, to enhance bonding of the endplates with the core. Each endplate has a central barrier layer for preventing the molten core material from extruding through the core interface pores into the bone interface pores, reserving the bone interface pores for bone in-growth. A method of manufacturing the composite interbody device is also disclosed. | 07-05-2012 |
20120172991 | Composite Interbody Device - A composite interbody device includes superior and inferior endplates with a plastic core molded therebetween. The core includes one or more features for permitting bone growth through the core. Each endplate includes a bone interface side coated with hydroxyapatite, for promoting bone on-growth. Pores in the bone interface sides permit bone in-growth. Core interface sides of the endplates include relatively larger pores for accepting molten material from the core, for example during injection molding, to enhance bonding of the endplates with the core. Each endplate has a central barrier layer for preventing the molten core material from extruding through the core interface pores into the bone interface pores, reserving the bone interface pores for bone in-growth. A method of manufacturing the composite interbody device is also disclosed. | 07-05-2012 |
20130165934 | Static Compression Device - A device for compressing two or more adjacent bones includes a male plate attachable to a first one bones and having a central protrusion extending away from the male plate along a longitudinal axis, a female plate attachable to a second one of the bones and having a channel substantially parallel to the longitudinal axis and adapted to conformally receive the central protrusion when the plates are aligned, and a locking mechanism configured to: hold the male plate and the female plate together when the plates are aligned; allow the male plate and the female plate to move with respect to each other under compression along the longitudinal axis when the protrusion is engaged with the channel; and prevent movement of the male plate with respect to the female plate when a desired, measurable amount of force is applied to the first bone with respect to the second bone. | 06-27-2013 |
20130247357 | METHOD OF MANUFACTURING A COMPOSITE INTERBODY DEVICE - A method of manufacturing a composite interbody device includes assembling superior and inferior endplates, this including forming or layering micro-porous titanium on opposing sides of a solid titanium sheet. A first of the opposing sides provides a micro-porous bone interface layer and a second of the opposing sides provides a micro-porous core interface side. The solid titanium sheet therebetween forms a central barrier layer. The inferior and superior endplates are placed in a mold, on each side of a core cavity, with the core interface sides facing the core cavity and the bone interface sides facing away from the cavity. Molten plastic is injection-molded into the core cavity to form a plastic core between the endplates, the molten plastic extruding into pores of the microporous core interface sides. The plastic is set to bond the core with the endplates. | 09-26-2013 |
20140275797 | Expandable Cannula with Distal Locking Mechanism - An expandable cannula includes a proximal end portion having a substantially constant diameter therethrough, and a distal end portion, coupled to the proximal end portion and having a proximal end and a distal end. The distal end portion includes a plurality of panels hinged by “living hinges” to the proximal end portion, and a locking mechanism that stabilizes the distal end portion in one of a contracted position and an expanded position. The locking mechanism may be a strut pressed overcenter during expansion distal portion to expanded configuration, or may include a locking ring and a catch for stabilizing the ring in a configuration where it holds the panels in expanded configuration. | 09-18-2014 |
20150045793 | Static Compression Device - A Static Compression Device (SC device) for active, measurable compression of a spinal fusion graft is disclosed. The SC device attaches to adjacent vertebral bodies or other pieces of bone and works with a compression tool to apply compressive force to adjacent vertebral bodies or pieces of bone to assist fusion. Once compressed, the SC device locks to maintain the compression applied at surgery, while preventing further compression after surgery. In one embodiment, the compression device applies a desired amount of force to allow the surgeon more control over the force applied to a cervical, thoracic or lumbar implant than previously available. The SC device may compresses multiple adjacent vertebrae across adjacent bone graft(s) to facilitate fusion of these vertebrae to treat pain from damaged disks between vertebrae that may on the spinal cord and nerve roots. SC device may also apply compression across fractures to facilitate union. | 02-12-2015 |