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US5888220: Articulating joint repair

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Filing Information

Inventor(s) Jeffrey C. Felt · Craig A. Bourgeault · Matthew W. Baker ·
Assignee(s) Advanced Bio Surfaces, Inc. ·
Attorney/Agent(s) Fredrikson & Byron, P.A. ·
Primary Examiner David H. Willse ·
Assistant Examiner Bruce E. Snow ·
Application Number US8590293
Filing date 01/23/1996
Issue date 03/30/1999
Predicted expiration date 05/06/2014
U.S. Classifications 623/17  · 623/66  ·
International Classifications A61F 244  ·
Kind CodeA
International Classifications 62366;17;16 ·
Related U.S. Application DataCROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of U.S. application Ser. No. 08/239,248, filed May 6, 1994, now U.S. Pat. No. 5,556,429, for JOINT RESURFACING SYSTEM.
9 Claims, No Drawings


Abstract

A method and related materials and apparatus for using minimally invasive techniques to repair (e.g., reconstruct) tissue such as fibrocartilage, and particularly fibrocartilage associated with diarthroidal and amphiarthroidal joints. The method involves the use of minimally invasive techniques to access and prepare damaged or diseased fibrocartilage within the body, and to then deliver a curable biomaterial, such as a two-part polyurethane system, to the prepared site, and to cure the biomaterial in situ in order to repair the fibrocartilage. Applications include repair and replacement of the intervertebral disc of the spine.

Independent Claims | See all claims (9)

  1. 1. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon, and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure; mixing the biomaterial components upon positioning of the balloon: and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,wherein mechanical distraction is used in combination with the pressurized injection of flowable biomaterial to distract the space.
  2. 2. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon, and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure; mixing the biomaterial components upon positioning of the balloon: and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,the method comprising the further step of deflating the balloon as biomaterial is delivered.
  3. 3. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon, and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure; mixing the biomaterial components upon positioning of the balloon; and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,wherein the polyurethane system comprises a two-part prepolymer system and further comprises an isocyanate reactant consisting essentially of aromatic isocyanates, the method further comprising the further step of deflating the balloon as biomaterial is delivered.
  4. 4. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon, and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure; mixing the biomaterial components upon positioning of the balloon: and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,wherein a) the polyurethane system comprises a two-part prepolymer system and further comprises an isocyanate reactant consisting essentially of aromatic isocyanates, b) the minimally invasive steps are performed using arthroscopic or endoscopic techniques including visualization, and c) the method comprises the further step of deflating the balloon as biomaterial is delivered.
  5. 5. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon, and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure; mixing the biomaterial components upon positioning of the balloon; and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,wherein the injection of pressurized biomaterial is sufficient to distract the disc space from constricted dimensions of on the order of 3 mm to 4 mm to dimensions of on the order of 8 mm to 12 mm, andwherein the cured biomaterial provides a heterogeneous implant having a plurality of regions, andwherein the regions comprise a more rigid outer region and a more flexible inner region.
  6. 6. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon, and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure: mixing the biomaterial components upon positioning of the balloon; and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,wherein the polyurethane system comprises a two-part prepolymer system and further comprises an isocyanate reactant consisting essentially of aromatic isocyanates,comprising the further step of deflating the balloon as biomaterial is delivered, and wherein the cured biomaterial provides a heterogeneous implant having a plurality of regions.
  7. 8. A method for repairing a damaged or diseased intervertebral disc, the method comprising the steps of:a) using minimally invasive techniques to remove damaged or diseased nucleus from the disc;b) providing a mold apparatus comprising a balloon adapted to contain a biomaterial and a delivery cannula adapted to flowably connect a biomaterial source to the balloon and using minimally invasive means to position the balloon within the disc;c) providing a biomaterial source comprising a polyurethane system comprising a plurality of components adapted to be mixed at the time of use to provide a flowable biomaterial and initiate its cure: mixing the biomaterial components upon positioning of the balloon; and using minimally invasive techniques to deliver the flowable biomaterial by injection into the balloon under pressure sufficient to provide on the order of 3 atmospheres to on the order of 4 atmospheres pressure to distract the disc space, andd) allowing the delivered biomaterial to cure within 5 minutes of mixing the components to permit the cannula to be removed and to provide a permanent replacement for the nucleus,wherein a) the polyurethane system comprises a two-part prepolymer system and further comprises an isocyanate reactant consisting essentially of aromatic isocyanates, b) the minimally invasive steps are performed using arthroscopic or endoscopic techniques including visualization, and c) the method comprises the further step of deflating the balloon as biomaterial is delivered, andwherein the cured biomaterial provides a heterogeneous implant having a plurality of regions.

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