Spinal cord protection device

• US 5,437,672 A
• Filed: 08/26/1994
• Issued: 08/01/1995
• Est. Priority Date: 11/12/1992
• Status: Expired due to Term

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Neville Alleyne
• Inventors: Alleyne, Neville
• Primary Examiner(s): Brown, Michael A.
• Application Number:
  US08/296,857
• Time in Patent Office: 340 Days
• Field of Search: 606/60-71, 606/86-98, 606/100, 606/102, 623/16, 623/17
• US Class Current: 606/279
• CPC Class Codes: A61B 17/00 Surgical instruments, devices or methods, e.g. tourniquets A61B18/00 takes precedence; contraceptive devices, pessaries, or applicators therefor A61F6/00; eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 17/70 Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
• CPC Class Codes: A61B 2090/0816 for preventing adhesion
• CPC Class Codes: A61B 90/00 Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges protective face masks A41D13/11; surgeon's or patient's gowns or dresses A41D13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M1/00

Abstract

A biocompatible protection device is disclosed to prevent the postoperative formation of adhesions to the spinal dura of a vertebrate comprising a shield adapted to fit onto at least one lamina of at least one vertebrae and wherein said shield is positioned on the posterior surface of the vertebral column.

Claims

1. A method for minimizing adhesions to the spinal dura following spinal surgery, comprising the steps of:

performing a bony dissection on at least a portion of one vertebrae to expose the spinal dura; and

positioning a biocompatible protection device to cover said exposed spinal dura, wherein said device comprises a shield adapted to cover at least a portion of one vertebrae having said bony dissection, an elongate concavity on a first side of the shield, said concavity extending axially from a first axial end of the shield to a second axial end of the shield;

a first support plane on the shield, spaced laterally apart in a first direction from the longitudinal axis of the shield; and

a second support plane on the shield, spaced laterally apart in a second direction from the longitudinal axis of the shield;

wherein placement of said first and second support planes on opposite sides of said spinal dura aligns the longitudinal axis of said concavity generally parallel to the longitudinal axis of the spinal dura, with said first side of the shield spaced apart from the spinal dura, and wherein placement of said device over said dura minimizes adhesions to said dura.

2. The method of claim 1, additionally comprising the step of affixing said device to at least one vertebrae.

3. The method of claim 1, wherein the device is positioned over more than one vertebrae.

4. The method of claim 1, wherein the positioning step additionally includes the step of adding an adhesion minimizing agent between the device and the dura.

5. The method of claim 4, wherein the adhesion minimizing agent is incorporated into the device.

6. The method of claim 1, wherein the method additionally comprises the step of exposing the device in a subsequent surgical procedure.

7. The method of claim 6, wherein the method further comprises the step of removing said device to reexpose said spinal dura.