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The GraftShield™ allograft processing system is designed to set an entirely new standard in allograft sterilization. This system offers scientifically validated tissue sterilization (validated to SAL 10-6 in accordance with ISO 11137-2 Method 1) which virtually eliminates the risk of bacterial disease transmission. The following paragraphs provide information on the tissue processing steps in this system.

To learn more about the various certifications of Bone Bank Allografts and Texas Human Biologics, please click here.

To download a PDF file of our catalog pages which discuss allograft processing, please click here.

Tissue Processing




GraftCleanse™ Tissue Cleansing

The GraftShield™ process requires aseptic handling of all tissue throughout processing and is based on a scientifically validated sterilization method which results in a Sterility Assurance Level (SAL) of 10-6 in accordance with ISO 11137-2 Method 1. This validated process is designed to protect the biomechanical properties of each allograft while virtually eliminating patient risk.During processing, tissues are treated with the GraftCleanse™ process which includes chemical and physical cleaning procedures that reduce the bone marrow and lipid elements associated with normal human tissue. Environmental conditions under which the chemical exposure occurs include normal atmospheric pressure, physical agitation, 38º C ultrasonic water bath incubation, and room temperature dwell time.


Tissue Processing


Our proprietary GraftSheild™ processing system was developed to offer the following advantages:

  • Validated GraftCleanse™ tissue cleansing method
  • Custom machinery designed exclusively by THB for tissue manufacturing and sterilization between each donor case
  • Load strength testing
  • Controlled exposure to freeze/thaw cycles


Our Processing Partner Facility

Located in the Texas Research Park in San Antonio, Texas Human Biologics (THB) has recently opened its new state-of-the-art human tissue processing center. The facility was designed and built to be in full compliance with environmental condition requirements for handling human tissue. All human tissues are handled in an ultra clean environment.Specialty features include:

  • Continuous sheet, seam welded cove base flooring
  • Gasketed, sealed, and washable ceilings
  • Full sheet glued Fiberglass Reinforced Polyester (FRP), seam sealed walls
  • Point of passage, magnehelic gauges for continuous monitoring of clean room zone pressures
  • Fully adjustable High Efficiency Particulate Air (HEPA) filter air handling system
  • Magnetic door interlocks for facility security and air pressure maintenance
  • Validated ethylene oxide sterilization of supplies and equipment
  • Validated steam sterilization of supplies and equipment



The GraftShield™ Advantage

  • Sterile human allograft tissues
  • Final package sterilization
  • Proprietary cleansing processes
  • Bone Bank Allografts meets the exacting FDA regulations and AATB standards

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