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Patents with Abstracts

7. 8,257,634 
Actuation sled having a curved guide member and method

“Medical devices manufacturers often employ injection molding to produce certain components of surgical instruments. For example, some parts of surgical staplers are manufactured using injection molding. In particular, actuation sleds can be made by injecting molding material into a mold cavity. Actuation sleds serve to drive staple pushers vertically and, thus, eject staples. Actuation sleds typically include spaced apart ramps or cam wedges. These cam wedges are designed to cooperate with angular surfaces of the staple pushers to eject the staples. The angular surface of the staple pushers and the cam wedges complement each other. The cooperation between the angular surfaces of staple pushers and the actuation sled is a key step of the surgical stapling process. Hence, actuation sleds should have cam wedges with the least amount of imperfections. It is thus desirable to develop an apparatus, system, and method to manufacture high quality actuation sleds.”

Scirica of Tyco Healthcare Group LP, Massachusetts,  developed a mold for injection molding actuation sleds with a central, sloping, non-linear surface.  It includes a closed cavity within the central, sloping, non-linear surface and a gate. It further includes at least one flow restrictor positioned on the mold part for initially directing flow of injected fluid to the at least one shaped portion. (RDC 9/10/2012)

6. 8,241,656 
Articles including natural biodegradable polysaccharides and uses thereof
Chudzik, Swan and Burkstrand of Surmodics, Inc., Minnesota, formed medical articles from several natural biodegradable polysaccharides with pendent coupling groups.  It can include a bioactive agent which can be released as needed. (RDC 8/20/2012)

5. 8,192,786 
Method to ensure the removability and/or the mobility of an element cast in a sealing compound
Schuster, Schoen and Stocker of Siemens, Germany, developed a method to ensure the removability of an element cast in a casting compound for a module of a medical apparatus by coating the element with a meltable substance before the casting, the meltable substance is melted by heating after casting to remove the element.  (RDC 6/25/2012)

4. 8,187,254 
Biodegradable drains for medical applications
Hissink et al of Polyganics developed drains for draining fluids (liquids and/or gases) from antrums or other parts of the human or animal body from synthetic biodegradable material, preferably a biodegradable polymer. The majority of biocompatible, biodegradable synthetic materials that are being used in medical devices is based on synthetic polyesters made of (mixtures of) cyclic lactones such as glycolide, lactide, .epsilon.-caprolactone, para-dioxanone, trimethylenecarbonate and of polyesters made by a condensation reaction of diols and diacids or hydroxyalkanoic acids. These polyesters can be used as such or in combinations with polyethers, polyurethanes, polyamides or with organic or inorganic compounds (RDC 6/5/2012)

3. 8,136,676 
Polymers useful as medical materials
Mizomoto and Bradley of the University of Southhampton, Great Britain, developed polymers for medical materials with the general formula -(A)1-(B)m--(C)n-- (I) in which A is derived from an alkoxyalkyl (alkyl)acrylate monomer; B is derived from a monomer containing a primary, secondary, tertiary or quaternary amine group; C is derived from a non-ionic monomer; and 1+m+n=100,0<1, m, n<100. (RDC 5/11/2012)

2. 8,133,959 
Side-chain crystallizable polymers for medical applications
Brandom et al of REVA Medical, California developed inherently radiopaque side-chain crystallizable polymers (IRSCCP's) are useful in various medical applications. An example of a IRSCCP is a polymer that comprises a main chain, a plurality of crystallizable side chains, and a plurality of heavy atoms attached to the polymer, the heavy atoms being present in an amount that is effective to render the polymer radiopaque. A polymeric material that includes a IRSCCP may be fabricated into a medical device useful for at least partially occluding a body cavity. For example, such a medical device may be an embolotherapy product. Specific examples of polymers that may be modified with heavy atoms to make IRSCCP's include the acrylate, fluoroacrylate, methacrylate and vinyl ester polymers.  (RDC 5/4/2012)

1. 8,075,906
Medical devices having polymeric regions with copolymers containing hydrocarbon and heteroatom-containing monomeric species

Richard, Schwarz and Faust of Boston Scientific, Minnesota, developed implantable or insertable medical devices with one or more polymeric regions for drug release. (RDC 12/29/2011).


Roger D. Corneliussen

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921


Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen

** Date of latest addition; date of first entry is 5/4/2012.