Devices and methods for fracture reduction
First Claim
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1. An apparatus for forming a curvilinear void in bony structure, comprising:
- a curvilinear drilling device, wherein the drilling device includes a curved distal end that is induced to curve by a spring loaded pull wire, and wherein the drilling device includes an axial stiffening wire independent from the pull wire, wherein the drilling device further includes a feedscrew assembly including a feedscrew and a key component;
a multi-lumen balloon assembly having a hollow shaft and an expandable balloon element mounted on a distal portion of the shaft; and
a pull wire band, wherein the pull wire band provides an anchor for a distal end of the expandable balloon element,wherein the curvilinear drilling device is configured to be slidably inserted through the hollow shaft of the multi-lumen balloon assembly,wherein the curvilinear drilling device and the multi-lumen balloon assembly are configured to be positioned within a vertebral body,wherein the drilling device further comprises;
a handle; and
a flexible drill shaft assembly extending from a distal end of the handle, comprising;
a cutting tip located at a distal end of the flexible drill shaft assembly;
a flexible rotatable drive shaft coupled to the tip; and
a flexible, moveable and non-rotatable housing.
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Abstract
The invention relates to a method of creating a curvilinear cavity within a vertebral body or other bony structure. The invention also relates to devices that may be used to perform the steps to create the curvilinear cavity. In one embodiment, a method of forming a curvilinear void in bony structure may include the steps of accessing a bony structure with a cannula, inserting a distal end of a drill device through the cannula and into the bony structure, manipulating the distal end of the drill device to create a curvilinear void in the bony structure, enlarging the void by expansion of a balloon element mounted to the drill device, and deflating the balloon element and removing the drill device from the cannula.
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Citations
19 Claims
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1. An apparatus for forming a curvilinear void in bony structure, comprising:
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a curvilinear drilling device, wherein the drilling device includes a curved distal end that is induced to curve by a spring loaded pull wire, and wherein the drilling device includes an axial stiffening wire independent from the pull wire, wherein the drilling device further includes a feedscrew assembly including a feedscrew and a key component; a multi-lumen balloon assembly having a hollow shaft and an expandable balloon element mounted on a distal portion of the shaft; and a pull wire band, wherein the pull wire band provides an anchor for a distal end of the expandable balloon element, wherein the curvilinear drilling device is configured to be slidably inserted through the hollow shaft of the multi-lumen balloon assembly, wherein the curvilinear drilling device and the multi-lumen balloon assembly are configured to be positioned within a vertebral body, wherein the drilling device further comprises; a handle; and a flexible drill shaft assembly extending from a distal end of the handle, comprising; a cutting tip located at a distal end of the flexible drill shaft assembly; a flexible rotatable drive shaft coupled to the tip; and a flexible, moveable and non-rotatable housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for forming a curvilinear void in bony structure, comprising:
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a handle assembly; a curvilinear drilling device, wherein the drilling device includes a curved distal end that is induced to curve by a spring loaded pull wire, and wherein the drilling device includes an axial stiffening wire independent from the pull wire, wherein the drilling device further includes a feedscrew assembly including a feedscrew having a threaded mating with the handle assembly configured to provide rotational and axial driving motion and a key component configured to movably couple the drilling device to the handle assembly to ensure a desired circumferential orientation between the drilling device and the handle assembly; a multi-lumen balloon assembly having a hollow shaft and an expandable balloon element mounted on a distal portion of the shaft; and a pull-wire band, wherein the pull wire band provides an anchor for a distal end of the expandable balloon element, wherein the curvilinear drilling device is configured to be slidably inserted through the hollow shaft of the multi-lumen balloon assembly, wherein the curvilinear drilling device and the multi-lumen balloon assembly are configured to be positioned within a vertebral body, wherein the drilling device further comprises; a handle; and a flexible drill shaft assembly extending from a distal end of the handle, comprising; a cutting tip located at a distal end of the flexible drill shaft assembly; a flexible rotatable drive shaft coupled to the tip; and a flexible, moveable and non-rotatable housing.
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Specification
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Current AssigneeGlobus Medical, Inc.
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Original AssigneeGmedelaware 2 LLC (Globus Medical, Inc.)
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InventorsSennett, Andrew R., Beyreis, Randall J., Williams, Brett A.
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Primary Examiner(s)COLEY, ZADE JAMES
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Application NumberUS12/486,439Publication NumberTime in Patent Office2,351 DaysField of Search606 79- 80, 606 92- 94, 606167-172, 604/264, 600101-183, 623 1711- 1716US Class Current1/1CPC Class CodesA61B 17/1617 with mobile or detachable p...A61B 17/1631 Special drive shafts, e.g. ...A61B 17/1642 for producing a curved boreA61B 17/1671 for the spineA61B 17/8855 inflatable, e.g. kyphoplast...
