摘要:
An articulating assembly includes a first elongated element for attachment to a first anatomical region, and a second elongated element for attachment to a second anatomical region. In at least one embodiment, a coupling connects the first and second elongated elements. The coupling includes a moveable joint configured to allow polyaxial movement of the first elongated element with respect to the second elongated element. The assembly further includes a locking mechanism. The locking mechanism is operable in an unlocked condition to permit polyaxial movement of the first elongated element with respect to the second elongated element, and a locked condition to immobilize the movable joint and fix the position of the first elongated element with respect to the second elongated element.
摘要:
Unidirectional dynamic interbody fusion devices and methods of use for insertion into a patient in order to maintain a space between two vertebral bodies. A first interbody fusion device including a body member, at least one side member, and a means for moving the at least one side member relative to the central body member. A second interbody fusion device including a base member, a top member, and a means for moving the top member relative to the base member. A surgical method for maintaining a space between two vertebral bodies in a spine, including obtaining a medical device, inserting and coupling an expansion tool into an opening within the medical device, slidingly inserting the medical device into a space between two vertebral bodies; and rotating the expansion tool to move the at least one side member in a direction relative to the body member.
摘要:
The surgical instrument includes a handle and a housing member that has a first end that is fixed to the handle and a second end that is configured to receive an engagement member. The surgical instrument also has an implant holding mechanism that is operatively associated with the housing member and the handle. The surgical instrument further includes a length control mechanism that has a knob, a rod member and a toothed member. The toothed member is fixed to one end of the rod member and the knob is attached to the other end. The surgical instrument also has a locking mechanism that includes a knob and a rod member having a proximal end to which the knob is attached and a distal end that is configured to detachably couple to a locking device. A surgical method for using the surgical instrument and a bone spacing kit is also disclosed.
摘要:
An articulating assembly includes a first elongated element for attachment to a first anatomical region, and a second elongated element for attachment to a second anatomical region. In at least one embodiment, a coupling connects the first and second elongated elements. The coupling includes a moveable joint configured to allow polyaxial movement of the first elongated element with respect to the second elongated element. The assembly further includes a locking mechanism. The locking mechanism is operable in an unlocked condition to permit polyaxial movement of the first elongated element with respect to the second elongated element, and a locked condition to immobilize the movable joint and fix the position of the first elongated element with respect to the second elongated element.
摘要:
Variable height intervertebral devices and method of employing the devices are disclosed. The devices and methods can maintain or re-establishing anatomic spacing along a spine and can ensure avoidance of long-term structural, neurological, vascular, and/or other systemic impairments. The intervertebral device includes a cylindrical body having a first end and a second end opposite the first end; a first disk threaded to the first end of the cylindrical body and a second disk mounted to the second end of the cylindrical body; means for rotating the cylindrical body whereby the first disk translates along the cylindrical body to vary the height of the device; and a plurality of pins mounted to one disk, the plurality of pins slidably engageable with a plurality of sleeves mounted to the other disk, the pins and sleeves inhibiting the first disk from rotating when the cylindrical body is rotated.
摘要:
A vertebral body replacement device includes a body member and a central rod member having two threaded portions and configured to be operatively associated with the body member. The device also includes a first end member and a second end member with the end members configured to threadingly engage the threaded portions of the central rod member. The body member and the two end members are further constructed to inhibit rotational movement of the two end members when the device is positioned within a space within a spine as the two end members will engage the adjacent respective vertebral bodies following rotational actuation of the central rod member causing the end members to move in an axial direction relative to the body member, thereby allowing the two end members to apply a force to the two vertebral bodies. A surgical instrument and method for using the device are also disclosed.
摘要:
Variable height intervertebral devices and method of employing the devices are disclosed. The devices and methods can maintain or re-establishing anatomic spacing along a spine and can ensure avoidance of long-term structural, neurological, vascular, and/or other systemic impairments. The intervertebral device includes a cylindrical body having a first end and a second end opposite the first end; a first disk threaded to the first end of the cylindrical body and a second disk mounted to the second end of the cylindrical body; means for rotating the cylindrical body whereby the first disk translates along the cylindrical body to vary the height of the device; and a plurality of pins mounted to one disk, the plurality of pins slidably engageable with a plurality of sleeves mounted to the other disk, the pins and sleeves inhibiting the first disk from rotating when the cylindrical body is rotated.
摘要:
The vertebral body replacement device includes a body member and a central rod member that has two threaded portions and is configured to be operatively associated with the body member. The device also includes a first end member and a second end member with the end members being configured to threadingly engage the threaded portions of the central rod member. The body member and the two end members are further constructed to inhibit rotational movement of the two end members when the device is positioned within a space within a spine as the two end members will engage the adjacent respective vertebral bodies following rotational actuation of the central rod member causing the end members to move in an axial direction relative to the body member, thereby allowing the two end members to apply a force to the two vertebral bodies. A surgical method using the device is also disclosed.
摘要:
Unidirectional dynamic interbody fusion devices and methods of use for insertion into a patient in order to maintain a space between two vertebral bodies. A first interbody fusion device including a body member, at least one side member, and a means for moving the at least one side member relative to the central body member. A second interbody fusion device including a base member, a top member, and a means for moving the top member relative to the base member. A surgical method for maintaining a space between two vertebral bodies in a spine, including obtaining a medical device, inserting and coupling an expansion tool into an opening within the medical device, slidingly inserting the medical device into a space between two vertebral bodies; and rotating the expansion tool to move the at least one side member in a direction relative to the body member.