| http://www.w3.org/ns/prov#value | - The retaining apparatus is a selectively deployable retaining means disposed at or proximal to the tip of a transseptal catheter or sheath which is placed across a septum, such as the interatrial...http://www.google.com/patents/US5312341?utm_source=gb-gplus-sharePatent US5312341 - Retaining apparatus and procedure for transseptal catheterizationAdvanced Patent SearchPublication numberUS5312341 APu
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