Dynamized Interspinal Implant

• US 20140107704A1
• Filed: 12/19/2013
• Published: 04/17/2014
• Est. Priority Date: 03/06/2004
• Status: Abandoned Application

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: DePuy Synthes Products LLC (Johnson & Johnson)
• Inventors: Serhan, Hassan, Christianson, William, DiNello, Alexander Michel
• Application Number:
  US14/134,090
• Publication Number:
  US 20140107704A1
• Time in Patent Office: Days
• US Class Current: 606/249
• CPC Class Codes: A61B 17/7062 Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs rib fixation devices A61B17/8076; Tools for such devices
• CPC Class Codes: A61B 17/7065 Devices with changeable shape, e.g. collapsible or having retractable arms to aid implantation; Tools therefor
• CPC Class Codes: A61B 17/7068 Devices comprising separate rigid parts, assembled in situ, to bear on each side of spinous processes; Tools therefor
• CPC Class Codes: A61B 2017/00075 Motion
• CPC Class Codes: A61B 2017/00221 with wireless transmission of data, e.g. by infrared radiation or radiowaves
• CPC Class Codes: A61B 2017/00964 composite
• CPC Class Codes: A61B 2017/567 Joint mechanisms or joint supports in addition to the natural joints and outside the joint gaps
• CPC Class Codes: A61B 2017/681 Alignment, compression, or distraction mechanisms
• CPC Class Codes: A61F 2/4405 for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes devices implanted between spinous or transverse processes A61B17/7062
• CPC Class Codes: A61F 2/482 Electrical means

Abstract

An interspinous process implant for insertion between adjacent spinous processes, the implant having a flexible body having i) an upper posterior portion having an upper surface adapted to bear upon an upper spinous process, ii) a lower posterior portion having a lower surface adapted to bear upon a lower spinous process, and iii) an arcuate, flexible anterior wall connecting the upper and lower portions, wherein the anterior wall has a narrowed portion.

Claims

1. An interspinous implant for insertion between adjacent spinous processes, the implant comprising:

a) a flexible body comprising;

i) an upper posterior portion having an upper surface adapted to bear upon an upper spinous process,

ii) a lower posterior portion having a lower surface adapted to bear upon a lower spinous process, and

iii) an arcuate, flexible anterior wall connecting the upper and lower portions,

wherein the anterior wall has a narrowed portion.

2. The implant of claim 1 wherein the flexible body is substantially U-shaped.

3. The implant of claim 1 wherein the flexible body further comprises:

iv) an arcuate, flexible posterior wall connecting the upper and lower portions.

4. The implant of claim 1 further comprising:

b) a lower pair of extensions extending downward from the lower surface of the lower portion of the flexible body and collectively defining a lower bracket.

5. The implant of claim 4 wherein each extension comprises a transverse throughhole adapted for fixing the implant to the adjacent spinous processes.

6. The implant of claim 5 further comprising:

c) a fastening element having a first end extending through the first transverse throughole and a second end extending through the second transverse through hole.

7. The implant of claim 4 each extension comprises an inner wall and a fixation element extending inwardly from the inner wall, the fixation element adapted for fixing the implant to the adjacent spinous processes.

8. The implant of claim 1 wherein the upper and lower posterior portions are substantially non-parallel.

9. The implant of claim 1 wherein the flexible body is adapted to provide a stiffness of between 50 N/mm and 1000 N/mm.

10. The implant of claim 1 wherein the flexible body is adapted to provide a stiffness of between 100 N/mm and 500 N/mm.