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Surgical spacer with shape control

a spacer and shape control technology, applied in the field of surgical spacers, can solve the problems of not being customizable, requiring the destruction of important anatomical stabilizers, and current devices for spacing adjacent interspinous processes

Inactive Publication Date: 2007-11-29
WARSAW ORTHOPEDIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]The present invention provides in a fourth aspect, a method of spacing adjacent spinous processes. The method comprises providing an interspinous spacer, the interspinous spacer comprising a flexible container for containing an injectable material that is compressible during end use, wherein the container is substantially impermeable to the injectable material. The interspinous spacer further comprises a conduit coupled to the container for accepting the injectable material, and a structure for at least part of the container when containing the material, wherein the structure has a shape during end use to fit between adjacent spinous processes. The method further comprises implanting the interspinous spacer between adjacent spinous processes, and injecting the injectable material into the container through the conduit such that the shape is achieved.

Problems solved by technology

However, all devices require an open technique to be implanted, and many require destroying important anatomical stabilizers, such as the supraspinous ligament.
Current devices for spacing adjacent interspinous processes are preformed, and are not customizable for different sizes and dimensions of the anatomy of an interspinous area of an actual patient.

Method used

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Examples

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Embodiment Construction

[0030]A surgical spacer of the present invention can be formed in situ during a procedure. The spacer includes the following basic aspects: a flexible container, and a structure for at least part of the container that controls at least part of the shape of the surgical spacer. The flexible container can be filled or injected though an optional conduit after placement. Further, the structure may be folded or otherwise reduced in size prior to use in some aspects. Together with an unfilled container, in some aspects, the spacer can create a smaller footprint during implantation. Once filled, the structure provides support and containment for the container, as well as providing shape control for at least part of the spacer.

[0031]FIG. 1 depicts adjacent vertebrae 100, 102 of the lumbar region of a human spinal column. As known in the art, each vertebrae comprises a vertebral body (e.g., vertebral body 104), a superior articular process (e.g., superior articular process 106), a transvers...

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Abstract

An interspinous spacer for placement between adjacent spinous processes includes a flexible, fillable container (e.g., a bag or balloon) for containing a material that is compressible during end use, for example, silicone after curing. The container is impermeable to the material it will be filled with. A structural mesh, for example, made of PET fabric and interwoven shape-memory alloy wire, provides structure for and containment of the container, as well as shape control. The material can be injected into the container through an optional conduit, for example, a one-way valve.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS / PATENTS[0001]This application contains subject matter which is related to the subject matter of the following applications, each of which is assigned to the same assignee as this application and filed on the same day as this application. Each of the below listed applications is hereby incorporated herein by reference in its entirety:[0002]“Surgical Spacer,” by Lange et al. (Attorney Docket No. P22790.00).[0003]“Systems and Methods for Adjusting Properties of a Spinal Implant,” by Lange et al. (Attorney Docket No. P23186.00); andTECHNICAL FIELD[0004]The present invention generally relates to surgical spacers for spacing adjacent body parts. More particularly, the present invention relates to surgical spacers having a flexible container for containing a material that is compressible during end use, the container being substantially impermeable to the material, and a structure for controlling at least part of a shape of the container when contain...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/44
CPCA61B17/7065A61B2017/00557A61B17/7067A61F2/442A61F2002/4495A61F2/441
Inventor LANGE, ERIC C.TRIEU, HAI H.ANDERSON, KENT M.ALLARD, RANDALL L.BRUNEAU, AURELIEN
Owner WARSAW ORTHOPEDIC INC
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