Many people suffer from back pain due to any of a variety of factors. Such back pain can sometime be treated by introducing interspinous implants between the spinous processes of adjacent vertebral bodies in a patient's spine. This can maintain the stability of the vertebral column to increase the size of the spinal canal and allow the patient to have normal mobility.
There currently is a need for improved device that can be implanted between spinous processes.
Disclosed is a device that is configured to be implanted adjacent interspinous processes of a patient. In one aspect, a spinal implant device comprises: a spacer region adapted to be positioned between first and second spinous processes of first and second vertebral bodies to limit movement of the first spinous process and the second spinous process toward one another; and an attachment region attached to the spacer region, the attachment region adapted to attach to the first spinous process via a fastener, the attachment region comprising a pair of pads having attachment elements that are configured to attach onto the spinous process.
Other features and advantages should be apparent from the following description of various embodiments, which illustrate, by way of example, the principles of the invention.
Before the present subject matter is further described, it is to be understood that this subject matter described herein is not limited to particular embodiments described, as such may of course vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting. Unless defined otherwise, all technical terms used herein have the same meaning as commonly understood by one skilled in the art to which this subject matter belongs.
As will be apparent to those of skill in the art upon reading this disclosure, each of the individual embodiments described and illustrated herein has discrete components and features which may be readily separated from or combined with the features of any of the other several embodiments without departing from the scope of the subject matter described herein. Any recited method can be carried out in the order of events recited or in any other order which is logically possible.
With reference to
With reference still to
As shown in
This is described in more detail with reference to
With reference still to
The main body 610 has a substantially tubular configuration with an internal shaft and an out wall that forms a substantially cylindrical shape. A plurality of openings extend through the outer wall and communicate with the internal shaft.
The expander member 615 is elongated in shape and has a threaded shank that fits into the opening 625 of the main body. The expander member 615 can be rotated to engage with threads inside the opening 625 to engage the expander member 615 with the main body 610.
Any of the device embodiments can be made of any biologically adaptable or compatible materials such as Polyether ether ketone (PEEK). Additional materials considered acceptable for biological implantation are well known and include, but are not limited to, stainless steel, titanium, tantalum, combination metallic alloys, various plastics, resins, ceramics, biologically absorbable materials and the like. In addition, any of the devices may be packed with a bone graft or other suitable material for fusing to adjacent bone.
Rotation of the actuator 715 causes the arms in a respective pair to rotate about an axis of rotation of the actuator 715. That is, the arms rotate about the axis in a scissor-like manner. This permits the arms to be opened up to a size that would accept a respective spinous process and then closed to a size that grasps the respective spinous process. In an embodiment, each arm has a flat inner surface with projections that are configured to increase a frictional hold with the spinous process to which the arm is coupled, as shown in
With reference still to
In another embodiment, shown in
In yet another embodiment, shown in
Although embodiments of various methods and devices are described herein in detail with reference to certain versions, it should be appreciated that other versions, embodiments, methods of use, and combinations thereof are also possible. Therefore the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
This application is a continuation of U.S. patent application Ser. No. 13/526,277, filed Jun. 18, 2012, which claims priority of U.S. Provisional Patent Application Ser. No. 61/515,541 entitled EXPANDABLE INTERSPINOUS DEVICE and filed on Aug. 5, 2011, and U.S. Provisional Patent Application Ser. No. 61/498,354 entitled EXPANDABLE INTERSPINOUS DEVICE and filed on Jun. 17, 2011. The disclosures of the Provisional Patent Applications are hereby incorporated by reference in their entirety.
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Number | Date | Country | |
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Parent | 13526277 | Jun 2012 | US |
Child | 13761031 | US |