News Column

Patent Issued for Implant for Stabilizing Vertebrae Or Bones

August 6, 2014

By a News Reporter-Staff News Editor at Biotech Week -- A patent by the inventors Biedermann, Lutz (VS-Villingen, DE); Matthis, Wilfried (Weisweil, DE); Harms, Jurgen (Karlsruhe, DE), filed on December 23, 2008, was published online on July 22, 2014, according to news reporting originating from Alexandria, Virginia, by NewsRx correspondents (see also Biedermann Technologies GmbH & Co. KG).

Patent number 8784491 is assigned to Biedermann Technologies GmbH & Co. KG (Donaueschingen, DE).

The following quote was obtained by the news editors from the background information supplied by the inventors: "The invention relates to an implant for stabilizing vertebrae or bones. In particular, the invention relates to an implant for stabilizing an osteoporotic vertebral body.

"A known method for the treatment of vertebral body fractures is the so called vertebroplasty. Bone cement of low viscosity is injected with high pressure directly into the fracture site of the vertebral body. There is a risk that a portion of the bone cement exits the vertebral body and flows into the surrounding area. This may cause discomfort or pain since the bone cement can press onto nerves or the spinal cord. Also, the vascular structure beyond the vertebral end plates can be damaged.

"Another method for the treatment of vertebral body fractures is the so-called kyphoplasty. The method consists in first inserting a canula into the broken vertebral body. Then a balloon catheter is inserted into the vertebral body. The balloon is expanded by means of injecting a fluid under X-ray monitoring thereby creating a cavity defined by the balloon catheter volume. Thereafter, the fluid is discharged and the balloon is removed. In a next step bone cement is injected into the cavity. The bone cement can be a bone cement with high viscosity compared to that used in vertebroplasty. Although the risk of bone cement escaping into the surrounding is lower than in vertebroplasty, the risk is still not negligible. Also due to the size of the cavity the amount of bone cement used is substantial.

"Both of these methods can also be applied to weak and partly collapsed osteoporotic vertebrae.

"A problem which is common to vertebroplasty and kyphoplasty is that the vertebral bodies become completely stiffened which enhances the likelihood of a fracture of the neighbouring vertebral bodies due to overloading.

"Based on the foregoing, there is a need to provide an implant for the stabilization of vertebrae or bones which overcomes the above mentioned problems."

In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventors' summary information for this patent: "The implant according to the invention can be used without bone cement. Therefore, there is no risk of damaging the vascular structure beyond the vertebral end plate. The long-term outcome of the treatment is improved. The implant forms an internal flexible support of the end plate which reduces the risk of a fracture of neighbouring vertebrae.

"Further features and advantages of the invention will become apparent from the detailed description of embodiments referring to the accompanying drawings."

URL and more information on this patent, see: Biedermann, Lutz; Matthis, Wilfried; Harms, Jurgen. Implant for Stabilizing Vertebrae Or Bones. U.S. Patent Number 8784491, filed December 23, 2008, and published online on July 22, 2014. Patent URL:

Keywords for this news article include: Tissue Engineering, Biomedical Engineering, Biomedical and Dental Materials, Biomedicine, Bone Cements, Bone Research, Bioengineering, Vertebroplasty, Orthopedic Procedures, Biedermann Technologies GmbH & Co. KG.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Biotech Week

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