Intradermal syringe and needle assembly
First Claim
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1. A needle assembly for an intradermal injection device comprising:
- a needle cannula having a needle tip; and
a limiter surrounding said needle cannula and having a skin engaging surface, wherein said limiter is moveable from a first position in which an elongate portion of said needle cannula is exposed from about 5 mm to about 15 mm, thereby allowing the needle cannula to access to a medication vial, to a locked second position in which said limiter is not movable from said second position to said first position and in which said needle tip extends beyond said skin engaging surface a pre-selected distance of about 3 mm or less.
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Abstract
A needle assembly for an intradermal injection device, and a drug delivery device, which includes a needle cannula and a limiter surrounding the needle cannula and includes a skin engaging surface on the limiter. The limiter is moveable from a first position in which an elongate portion of the needle cannula is exposed for access to a medication vial, to a locked second position in which the limiter is not movable from the second position to the first position. In the second position, the needle tip extends beyond the skin engaging surface a distance of about 3 mm or less.
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Citations
27 Claims
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1. A needle assembly for an intradermal injection device comprising:
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a needle cannula having a needle tip; and a limiter surrounding said needle cannula and having a skin engaging surface, wherein said limiter is moveable from a first position in which an elongate portion of said needle cannula is exposed from about 5 mm to about 15 mm, thereby allowing the needle cannula to access to a medication vial, to a locked second position in which said limiter is not movable from said second position to said first position and in which said needle tip extends beyond said skin engaging surface a pre-selected distance of about 3 mm or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A drug delivery device for use in administering intradermal injections, comprising:
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a needle cannula having a needle tip; a limiter surrounding said needle cannula and having a skin engaging surface, wherein said limiter is moveable from a first position in which an elongate portion of said needle cannula is exposed from about 5 mm to about 15 mm, thereby allowing the needle cannula to access to a medication vial, to a locked position in which said limiter is not movable from said second position to said first position and in which said needle tip extends beyond said skin engaging surface a pre-selected distance of about 3 mm or less; and a container adapted to contain a substance for intradermal injection, said container being in fluid communication with said needle cannula. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification