Spine distraction implant

a technology of implant and spinal canal, applied in the field of spinal canal implant, can solve the problems of reducing the foraminal area, radicular pain, neck pain and muscle weakness, etc., and achieve the effect of reducing the restriction of vessels and nerves, and increasing the volume of spinal canal
US20080086212A1Inactive Publication Date: 2008-04-10KYPHON
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
KYPHON
Publication Date
2008-04-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

A spine distraction implant alleviates pain associated with spinal stenosis and facet arthropathy by expanding the volume in the spine canal and / or neural foramen. The implant provides a spinal extension stop while allowing freedom of spinal flexion. An interspinous process implant with a selectably expandable spacer can be placed between adjacent spinous processes. a device implanted between the spinous processes of adjacent vertebrae of the spine can be used for relieving pain associated with the vertebrae and surrounding tissues and structures by maintaining and / or adding distraction between adjacent vertebrae. A tissue expander can be adapted to move from a first insertion position, for ease of implantation between spinous processes, to a second retention position that prevents displacement of the implant. An embodiment of a system can include an implant having a spacer with a thickness and a wing, wherein a first configuration of the wing has a first height substantially similar to the thickness and wherein the wing is adapted to be selectably arranged in a second configuration such that the wing has a second height greater than the first height. A periphery of the implant has a shape generally conformal with a shape of an inner surface of a cannula and a cross-sectional diameter smaller than an inner diameter of the cannula. The cannula is inserted such that a proximal end of the cannula is arranged between the adjacent spinous processes. The implant is then urged into position between the adjacent spinous processes by way of the cannula, and subsequently arranged in a second configuration to fix the implant in position.
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Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] The present application is a continuation-in-part of U.S. patent application Ser. No. 11 / 092,862, filed on Mar. 29, 2005; is a divisional of U.S. patent application Ser. No. 09 / 842,819, filed on Apr. 26, 2001, now issued as U.S. Pat. No. 7,201,751; which is a continuation-in-part of U.S. patent application Ser. No. 09 / 579,039, filed on May 26, 2000, now U.S. Pat. No. 6,451,019; which is a continuation-in-part of U.S. patent application Ser. No. 09 / 473,173, filed on Dec. 28, 1999, now U.S. Pat. No. 6,235,030; which is a continuation of U.S. Ser. No. 09 / 179,570, filed on Oct. 27, 1998, now U.S. Pat. No. 6,048,342; which is a continuation-in-part of U.S. patent application Ser. No. 08 / 958,281, filed on Oct. 27, 1997, now U.S. Pat. No. 5,860,977; which is a continuation-in-part of U.S. patent application Ser. No. 08 / 778,093, filed on Jan. 2, 1997 now U.S. Pat. No. 5,836,948.

[0002] The present application is also a continuation-in-part of ...

Claims

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