Abstract:
Bone fracture reduction devices, systems, and methods couple to a patient platform a mechanical bone fracture reduction fixture, which is sized and configured to be conveyed separate from the patient platform. The bone fracture reduction fixture carries an array of mechanical force reduction assemblies that are sized and configured to independently mechanically manipulate a fractured bone region. Each mechanical force reduction assembly functions independently of the other mechanical force reduction assemblies, to independently apply and maintain one of the prescribed mechanical reduction forces to the fracture and also mechanically reduce the fracture in the desired reduction planes.
Abstract:
A frame is sized and configured to support a reduced bone fracture of an individual. A guide assembly on the frame carries a bone fixing device guide that defines a guide path along which a bone fixing device can be advanced into a region of the reduced bone fracture. A linkage system couples the bone fixing device guide to the frame for articulation of the guide path among a plurality of desired orientations with respect to the reduced bone fracture. A guide bushing is included. Which includes packaging that maintains the guide bushing in a sterile condition prior to insertion into the bone fixing device guide.
Abstract:
A spinal prosthesis system having a caudal prosthesis provided with a pair of pedicle anchors for coupling to an inferior vertebral body, the caudal prosthesis including an artificial caudal facet joint structure comprising a pair of caudal bearing surfaces. A cephalad prosthesis is provided with a second pair of pedicle anchors for coupling to a superior vertebral body. The cephalad prosthesis includes an artificial cephalad facet joint structure having a pair of cephalad bearing surfaces. An artificial facet joint is formed between the adjoining vertebral bodies by articulation of the artificial caudal facet joint structure with the artificial cephalad facet joint structure.
Abstract:
An ankle implant for use in ankle arthroplasty in total ankle replacement is provided. The implant includes an upper prosthesis anchored to the tibia and a lower prosthesis anchored to the talus. The lower prosthesis is operable associated with the upper prosthesis. The implant also includes a stem which is rigidly removably connected to the second member. The stem includes a portion for attachment to the calcaneous. The stem is be adapted to be in a first position in the calcaneous when the stem is in a first relative position with respect to the lower prosthesis, and to provide for a second position in the calcaneous when the stem is in a second relative position with respect to the lower prosthesis.
Abstract:
A tubular member is sized and configured to establish an access path to bone having an interior volume occupied, at least in part, by cancellous bone. The tubular member includes a distal end portion having at least one opening. A structure is sized and configured to be carried by the tubular member and controllably advanced through the at least one opening to define a cutting surface that projects outside the distal end portion. The cutting surface has a dimension capable of cutting cancellous bone in response to rotation of the tubular member within the cancellous bone.
Abstract:
A device is introduced into the vertebral body through a percutaneous access path. The device is manipulated to modify the cancellous bone volume for introduction of bone filling material. Bone filling material is introduced into the cancellous bone volume modified by the device along the percutaneous path. Discharge of the bone filling material is directed into the cancellous bone volume through an opening that is oriented at an angle relative to the axis of the access path.
Abstract:
A method for delivering material into bone deploys a cannula through soft tissue to establish a subcutaneous path into bone. The method deploys a cavity forming instrument through the cannula to form a cavity in cancellous bone. The method introduces a material into the cavity through the cannula, which includes the advancement of a tamping instrument through the cannula to urge material into the cavity.
Abstract:
A method provides a void creation device including an expandable structure adapted to undergo expansion in the cancellous bone volume of a bone selected for treatment. The expandable structure has at least one dimension so that the expandable structure will assume a predetermined shape and size when substantially expanded that compacts only a first volume of the cancellous bone volume to form a void, leaving a second volume of the cancellous bone volume substantially uncompacted by the expandable structure. A filling material is placed within the void through the percutaneous access path.
Abstract:
Devices and methods compress cancellous bone. In one arrangement, the devices and methods make use of an expandable body that includes an internal restraint coupled to the body. The internal restraint directs expansion of the body. In one arrangement, a method for treating bone inserts the device having the internal restraint inside bone and causes directed expansion of the body in cancellous bone. Cancellous bone is compacted by the directed expansion.
Abstract:
A tube body includes an interior bore to carry a material flow into bone. The tube body includes a dispensing end having an opening communicating with the bore to dispense the material flow. One embodiment provides a cutting element, which extends in the opening to permit passage of the material flow and to sever the material flow in response to rotation of the tube body. Another embodiment deflects the dispensing end from the main axis of the tube body, to facilitate targeted introduction of flowable material, even when the access path does not align the tube body along the natural geometric axes of the treatment site. Another embodiment provides a connector having a rotating fitting, which releasably connects the tube body to a cement injecting tool. The rotating fitting allows the physician to rotate the injection nozzle assembly to control orientation and position in the treatment site, without rotating the associated injection tool itself.