Intradermal delivery device including a needle assembly
First Claim
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1. A hypodermic needle assembly for use in making intradermal injections, comprising:
- a hub portion that is able to be attached to a drug container;
a needle supported by the hub portion, the needle having a hollow body with a forward end extending away from the hub portion; and
a limiter portion that that is non-movable with respect to said hub portion and said limiter surrounds the needle and extends away from the hub portion toward the forward end of the needle, the limiter portion having a skin engaging surface that is adapted to be received against skin of an animal to receive an intradermal injection, the needle forward end extending beyond the skin engaging surface a selected distance such that the limiter portion limits an amount that the needle is able to penetrate through the skin of an animal.
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Abstract
A drug delivery device including a needle assembly facilitates making intradermal injections using a variety of drug container types such as a syringe. A hub supports the needle while a limiter surrounds the needle. The limiter includes a skin engaging surface that is adapted to be received against the skin of an animal to be intradermally injected. A forward end of the needle extends beyond the skin engaging surface a selected distance to limit a depth that the needle penetrates into the animal'"'"'s skin.
46 Citations
37 Claims
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1. A hypodermic needle assembly for use in making intradermal injections, comprising:
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a hub portion that is able to be attached to a drug container;
a needle supported by the hub portion, the needle having a hollow body with a forward end extending away from the hub portion; and
a limiter portion that that is non-movable with respect to said hub portion and said limiter surrounds the needle and extends away from the hub portion toward the forward end of the needle, the limiter portion having a skin engaging surface that is adapted to be received against skin of an animal to receive an intradermal injection, the needle forward end extending beyond the skin engaging surface a selected distance such that the limiter portion limits an amount that the needle is able to penetrate through the skin of an animal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An intradermal delivery device for use in making intradermal injections, comprising:
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a drug container having a reservoir adapted to contain a selected substance and an outlet port that allows the substance to exit the reservoir during an injection, wherein said drug container comprises a syringe having a generally flat body portion that at least partially surrounds the reservoir, the body portion and the reservoir being made from two sheets of thermoplastic material such that side walls of the reservoir are selectively deflectable toward each other to expel a substance from the reservoir during an injection;
a needle in fluid communication with the outlet port, the needle having a forward end that is adapted to penetrate the skin of an animal; and
a limiter that is non-movable with respect to said hub portion and said limiter surrounds the needle and has a skin engaging surface that is adapted to be placed against the skin of the animal to receive an intradermal injection, the needle forward end extending away from the skin engaging surface a selected distance such that the limiter limits an amount that the needle forward end penetrates the skin, wherein said limiter is non-movable and limits penetration of the needle into the dermis layer of skin of the animal so that the substance is injected into the dermis layer of the animal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of intradermally injecting at least one substance such as a drug, vaccine or the like into the skin, comprising the steps of:
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pressing a needle perpendicularly to the skin, said needle in fluid communication with an outlet port of a drug container having a reservoir adapted to contain a selected substance and the outlet port providing an exit path for the substance from the reservoir during an intradermal injection;
injecting the substance into the skin with the depth of penetration of the needle being limited to the intradermal space of the skin by a non-movable limiter that surrounds the needle and has a skin engaging surface that is adapted to be placed against the skin and a forward end of the needle extending away from the skin engaging surface a selected distance such that the limiter limits penetration of the needle forward end to the dermis layer of the skin so that the substance is injected into the dermis layer of the skin, said step of injecting the substance comprising deflecting at least two sheets of thermoplastic material forming a generally flat body portion that at least partially surrounds the reservoir toward each other to expel the substance from the reservoir during an injection. - View Dependent Claims (33, 34, 35, 36, 37)
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Specification