Abstract:
Apparatus and methods for bone fracture repair. The apparatus may include a structural support for positioning a first bone segment relative to a second bone segment. The apparatus may include an anchoring substrate. The anchoring substrate may be configured to compress the first bone segment to the second bone segment. The anchoring substrate may transmit tension from a distal bone segment anchor in the first bone segment to a proximal bone segment anchor in the second bone segment. The apparatus may be configured to be deployed percutaneously in an inner cavity of a bone. The apparatus may be installed in an open fracture. The apparatus may be expanded, self -expanding or configured for mechanically actuation. Some embodiments of the apparatus may include a central axis member that may be used in conjunction with expansion of one or both of the structural support and the anchoring substrate to configure the apparatus.
Abstract:
A device and method to reinforce the annulus during spinal surgery. The device is placed into the intervertebral space following discectomy. The distal end of a catheter is comprised of an expansile loop which may be increased in diameter by advancement of a portion of the catheter via its proximal end. The expansile loop may be formed such that when the loop is diametrically contracted the loop feeds into its other end. Stabilization of the outer portion of the loop and pulling out the inner portion will thereby increase the overall diameter of the loop while maintaining it as a closed loop or torus. The expansile loop can use an attachment means to secure it to substantially healthy tissues of the annulus, nucleus, or endplates. The present invention comprises four embodiments and can be used for disc fusion, artificial replacement of the nucleus, artificial replacement of the annulus, or both.
Abstract:
A method for artificial disc replacement incorporates an attachment means within a flexible and expandable mesh. The mesh is positioned within an intervertebral space in a contracted configuration and then expanded. A biologic medicament may be delivered from the mesh.
Abstract:
The present invention generally relates to a device and method, which may be used to reinforce the native annulus during spinal surgery. The device is a catheter-based device, which is placed into the inter-vertebral space following discectomy performed by either traditional surgical or endoscopic approaches. The distal end of the catheter is comprised of an expansible loop formed of woven or braided material to assist the introduction of a biocompatible solvent and biocompatible polymer introduced into the inter-vertebral space by way of said device.
Abstract:
Devices for access and/or closure of an annulotomy of a subject are disclosed. Devices may be separate from, joined to, or integral with an artificial disc nucleus, and may comprise any of numerous alternative means for securing the device within an annulotomy. Devices may provide access to a disc nucleus for one or more procedures requiring access and may close an annulotomy following the conclusion of one or more procedures. Methods for the delivery and deployment of annulotomy access and/or closure devices are also disclosed.
Abstract:
Es wird ein Knochenverankerungselement, wie z.B. eine Knochenschraube (1), bereitgestellt, mit einem Schaft (2) zum Verankern in einem Knochen, wobei der Schaft einen elastischen Abschnitt (4) aufweist. Der elastische Abschnitt (4) ist bevorzugt als Schraubenfeder ausgebildet. Ferner wird eine Stabilisierungseinrichtung für Knochen, beispielsweise für Wirbel bereitgestellt, die wenigstens ein erfindungsgemäßes Knochenverankerungselement (1), ein zweites Knochenverankerungselement und einen die Knochenverankerungselemente verbindenden Stab oder eine Platte aufweist.
Abstract:
Deployment systems (220) for deploying a bone fixation device are disclosed herein. One embodiment of a deployment system (220) includes a syringe-shaped body (222) configured to provide proximal traction to a bone fixation device in response to a compressive force between a finger grip (230) and a plunger (228) adapted to be engaged by the heel of a clinician's hand. The device (220) may include a collet (250) for gripping a proximal pin of a fixation device. The deployment device (220) may also include a tool (260) that includes an elongate body with a distal tip (266) adapted to rotationally engage a bone fixation device in order to axially rotate the fixation device.
Abstract:
Die Verriegelungsschraube (1) besitzt einen Schraubenkopf (2), einen Schraubenschaft (3) mit dem Durchmesser (d) und eine Zentrallinie (4), welche als Verbindungslinie der Schwerpunkte der axial aufeinanderfolgenden, orthogonalen Querschnittsflächen der Verriegelungsschraube (1) definiert ist. Sie weist ferner einen Austrittspunkt (5) am Schraubenkopf (2) und einen Austrittspunkt (6) am freien Ende des Schraubenschaftes (3) auf, wobei die Zentrallinie (4) nicht durchgehend geradlinig ist. Dank der erfindungsgemässen Verriegelungsschraube kann das Spiel zwischen der Querbohrung des Marknagels und der Verriegelungsschraube eliminiert werden.
Abstract:
A bone plating system is provided that permits maintenance of a compression force while also accommodating bony subsidence, among other features. Methods of implantation are also provided that improve alignment and placement during implantation and avoid maneuvers that weaken the vertebral bodies. A modular distraction screw is placed during the initial stages of surgery when all relevant landmarks are still intact. After completion of the surgical bone work, a proximal end of the distraction screw is detached, leaving a protruding distal segment implanted in the centerline of the vertebral bodies above and below the newly fused disc space. A bone plate is guided into proper position relative to the upper and lower vertebra by attaching the bone plate to the protruding distal segments. The distal segments of the distraction screws are tightened onto the plate and the plate is held stationary while bone screws are placed. The bone plating system is also extendable, allowing additional bone plates to be placed and coupled with existing plate components to create a multi-level plating system. Additional bone plates may be placed contemporaneously or during a subsequent surgical procedure.
Abstract:
Disclosed is a bone fracture fixation device (12), such as for reducing and compressing fractures in the proximal femur (10). The fixation device (12) includes an elongate body (28) with a helical cancellous bone anchor (34) on a distal end (32). An axially moveable proximal anchor (36) is carried by the proximal end (30) of the fixation device (12). The device (12) is rotated into position across the fracture or separation between adjacent bones and into the adjacent bone or bone fragment, and the proximal anchor (36) is distally advanced to apply secondary compression and lock the device (12) into place. The device (12) may also be used for soft tissue attachments.