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MEDPOR® Surgical Implants
For
Craniofacial Reconstruction and Augmentation
Properties and Handling Techniques
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© 2002, Porex Surgical, Inc.
Properties of MEDPOR Biomaterial
Biocompatible
Porous Polyethylene
Interconnecting omni-directional pores
Soft tissue integration
Contours in hot sterile saline
Stabilize with suture, wire or screw
Individual sterile packaging
© 2001 Porex Surgical Inc.
No. 408-010702-02
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© 2001 Porex Surgical Inc.
No. 408-010702-02
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The open interconnecting and multidirectional pore
structure of the porous polyethylene is clearly visible in
this Scanning Electron Microscope slide.
Physical Characteristics
Porous high density polyethylene
Sheets, blocks, spheres
Average pore size: > 100 microns
Anatomical shapes
Contains no additives
Customized Shapes
Maintains shape and form
Biocompatable
White in color
© 2001 Porex Surgical Inc.
No. 408-010702-02
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MEDPOR Implants can be stacked and sutured together.
© 2001 Porex Surgical Inc.
No. 408-010702-02
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© 2001 Porex Surgical Inc.
No. 408-010702-02
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The open pore structure of MEDPOR Implants allows for
vascularization. Vascularized porous implants are
reported to be less susceptible to late migration,
exposure and infection.
Clinical Results
Good stabilization
Minimal or no bone resorption under the implant
Minimal instance or absence of inflammatory reaction
Low infection rate
Implant well vascularized with healthy connective tissue
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Tissue ingrowth
© 2001 Porex Surgical Inc.
No. 408-010702-02
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This histology slide shows excellent ingrowth of
connective tissue into the center of the implant. The
white areas are the polyethylene structure.
Tissue ingrowth
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Additional example of excellent in-growth of
connective tissue into the center of the implant. The
off-white areas are the polyethylene structure.
Contradictions
Areas lacking adequate tissue coverage
Should not be used in infected areas
Should not be used in patients with systemic disorders
Should not be used in compromised tissue (poor vascularity)
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Surgical Applications
Cranial defects
Mandibular angle augmentation
Chin, malar, nasal augmentations
External ear reconstruction
Orbital enucleations and
eviscerations
Orbital floor, rims and walls
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Locations for MEDPOR
Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Locations for MEDPOR
Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Locations for MEDPOR
Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Shaping MEDPOR Implants
Sheets and thin blocks can be cut with scissors
Larger blocks can be shaped with a scalpel
A cutting burr may be used
If a burr is used, open pores with a scalpel
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Shaping MEDPOR Implants
MEDPOR sheets cut easily with a pair of surgical scissors.
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Shaping MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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All MEDPOR shapes are readily customized by the surgeon
to fit the patient’s individual needs.
Shaping MEDPOR Implants
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A fine thin edge can be cut without the product crumbling.
The porous implant material should not be placed on
surgical drapes or other fibrous material that may shed
particles on the implant.
Contouring MEDPOR Implants
Always maintain sterile environment
Heat saline to boiling point (100º C/ 212º F) in autoclave
Bring saline to sterile field
Place implant in saline and submerse implant for several minutes
Bend implant to desired shape while hot
Allow to cool
Repeat if necessary
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Contouring MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Implants can be soaked in a hot sterile saline bath for
several minutes. Saline temperature must be 90° to 95° C
Contouring MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Using powder free, double gloves you can modify the
shape of the implant.
Contouring MEDPOR Implants
Example of modifying the shape of a heated 9.5 mm block.
© 2001 Porex Surgical Inc.
No. 408-010702-02
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MEDPOR Customized Implants
Example of a MEDPOR Customized Implant and Surgical Model
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Implants are provided STERILE
DO NOT RESTERILIZE
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Handling MEDPOR Implants
Leave implant in sterile package until ready to use
Rinse gloves thoroughly
Place implant on carving block or in a basin of antibiotic solution or sterile
saline
Do NOT place on surgical drapes
© 2001 Porex Surgical Inc.
No. 408-010702-02
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MEDPOR Biomaterial Implants
Examples of MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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MEDPOR Biomaterial Implants
Examples of MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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MEDPOR Biomaterial Implants
Examples of MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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MEDPOR Biomaterial Implants
Examples of MEDPOR Implants
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Porex Surgical, Inc.
Cautions
Surgeons should utilize proper surgical techniques and their clinical experience to
determine appropriate surgical procedures
Sound surgical judgment should be used in the selection, shaping, handling, and
implantation of MEDPOR Surgical Implants
Product use instructions for MEDPOR Surgical Implants are found in the labeling
insert included in each product package
MEDPOR is a registered trademark of Porex Surgical Inc.
Copyright 2001, Porex Surgical Inc. – all rights reserved
Unauthorized use of copyrighted materials, logos, and tradenames, or copying for
any purpose, is prohibited by US and International law
POREX SURGICAL service mark is owned by or used under the license of Porex
Corporation
© 2001 Porex Surgical Inc.
No. 408-010702-02
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Manufactured by:
Porex Surgical Inc.
15 Dart Road
Newnan, GA 30265-1017 U.S.A.
1-678-479-1610 / 1-800-521-7321 US Toll Free
FAX 1-678-423-1435
© 2001 Porex Surgical Inc.
No. 408-010702-02
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