A Medical Device Daily Staff Report

Amedica (Salt Lake City), a spinal and orthopedic implant and instrument company focused on silicon nitride (SiN) ceramic technologies, said that it has been granted two U.S. patents for its total disc replacement (TDR) technology that features the use of silicon nitride in the construction of the complete implant. U.S. Patent No. 7,758,646 B2 and U.S. Patent No. 7,771,481 B2 cover the disc's design and the use of the silicon nitride ceramic materials in its construction.

The TDR is created exclusively from silicon nitride, with no other materials such as plastic or metal used in the design. An innovative motion-preserving total disc replacement implant, the TDR is designed to maintain a substantially full range of natural motion following implantation while providing resistance to extreme rotation of the spine. Its construction features a polished bearing surface on one side and a porous bio-in-growth surface on the reverse side for solid endplate attachment.

Designed to be implanted into the inter-vertebral space between adjacent spinal discs or vertebrae, the TDR is used as a prosthetic replacement for one or more surgically removed discs and maintains intervertebral anatomy.

In other patent news, Alan Schechter, a serial inventor and entrepreneur from Long Beach California, reported the U.S. Patent and Trademark Office (USPTO) has issued a notice of allowance for a patent titled "Apparatus for Dispensing Pressurized Contents." The patent claims are directed to show the amount of pressurized contents remaining in a pressurized container, such as a metered dose inhaler, for example, and displaying it to an observer; methods for comparing the amount of contents actually released from the pressurized container compared to a theoretical constant; and methods for time logging (alone or in conjunction with the logging of other data) the actuation of the dispensing valve for comparison to a prescribed method.

"Currently, there is no way to determine the actual volume remaining in a pressurized canister containing fluid (gas/liquid combination), such as in a metered dose inhaler (Albuterol). An asthmatic does not know how much medicine is left in his canister. With this device, a user will be able to get a digital read-out of the internal contents of the canister; the actual volume remaining. Many asthmatics end up in the emergency room because they get an episodic attack and realize; albeit all to late, that there canister is low or empty. The same concept can be used for any pressurized canister such as a propane tank or spray paint can" said Schechter.

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