Dip-molded polymeric medical devices with reverse thickness gradient, and method of making same
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United States of America Patent
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Issued Date -
Jul 1, 2004
app pub date -
Sep 12, 2002
filing date -
Sep 12, 2002
priority date (Note) -
Abandoned
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Abstract
An expandable polymeric medical article is formed by a novel dip-molding process, involving multiple dipping and rotational drying of liquid polymeric material layer at different pivotal positions. Preferably, the rotational drying is conducted so as to form an expandable polymeric medical article having a reverse thickness gradient in relation to the thickness gradient of conventional dip-molded polymeric medical articles. Specifically, the expandable polymeric medical article of the present invention has an expandable body member and a neck member, wherein such neck member has a wall thickness that is greater than that of the expandable body member, before any significant expansion of such body member.
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