B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 67/00 (2006.01) A61M 5/00 (2006.01) A61M 5/32 (2006.01) A61M 5/46 (2006.01) B28B 7/34 (2006.01) B29C 33/30 (2006.01) B41B 11/54 (2006.01)
Patent
CA 2323969
A method of fabricating a needle via conformal deposition in a two-piece mold includes the step of attaching a top mold member (20) to a bottom mold member (30) such that the top mold member and the bottom mold member define an enclosed, elongated needle trench (34) with a deposition aperture (24, 26). A conformal substance, such as polysilicon (50), is then passed through the deposition aperture such that the conformal substance is deposited within the enclosed, elongated needle trench (34) to form a needle (60). The method is used to form needles with prongs, multiple channels, multiple ports, barbs, strength enhancement features, and circuitry.
L'invention concerne un procédé de fabrication d'aiguilles par dépôt d'un revêtement conforme dans un moule en deux parties. Ce procédé comprend l'étape consistant à fixer un élément de moule supérieur (20) à un élément de moule inférieur (30) de telle sorte que ces deux éléments définissent ensemble une tranchée (34) d'aiguille allongée et close avec une ouverture de dépôt (24, 26). Une substance conforme, comme le silicium polycristallin (50) passe ensuite par l'ouverture de dépôt de telle sorte que ladite substance est déposée dans la tranchée (34) pour former une aiguille (60). Ce procédé est utilisé pour former des aiguilles avec des fourches, de multiples canaux, de multiples orifices, des ardillons, des caractéristiques de renforcement et un circuit.
Keller Christopher G.
Pisano Albert P.
Talbot Neil H.
Osler Hoskin & Harcourt Llp
The Regents Of The University Of California
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