Method for fabricating needles via conformal deposition in two-piece molds
First Claim
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1. A method of fabricating a needle via conformal deposition in a two-piece mold, said method comprising the steps of:
- attaching a top mold member to a bottom mold member such that said top mold member and said bottom mold member define an enclosed, elongate needle trench with a deposition aperture;
passing a conformal substance through said deposition aperture such that said conformal substance is deposited via vapor deposition within said enclosed, elongated needle trench;
stopping said passing step before said elongated needle trench is filled with said conformal substance; and
removing said top mold member and said bottom mold member to expose a needle.
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Abstract
A method of fabricating a needle via conformal deposition in a two-piece mold includes the step of attaching a top mold member to a bottom mold member such that the top mold member and the bottom mold member define an enclosed, elongated needle trench with a deposition aperture. A conformal substance, such as polysilicon, is then passed through the deposition aperture such that the conformal substance is deposited within the enclosed, elongated needle trench to form a needle. The method is used to form needles with prongs, multiple channels, multiple ports, barbs, strength enhancement features, and circuitry.
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Citations
6 Claims
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1. A method of fabricating a needle via conformal deposition in a two-piece mold, said method comprising the steps of:
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attaching a top mold member to a bottom mold member such that said top mold member and said bottom mold member define an enclosed, elongate needle trench with a deposition aperture; passing a conformal substance through said deposition aperture such that said conformal substance is deposited via vapor deposition within said enclosed, elongated needle trench; stopping said passing step before said elongated needle trench is filled with said conformal substance; and removing said top mold member and said bottom mold member to expose a needle. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification