Intradermal delivery device including a needle assembly
First Claim
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1. A hypodermic needle assembly for use in intradermally injecting vaccines into the skin of an animal, comprising:
- a hub portion that is able to be attached to a prefillable container for storing a vaccine;
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 surrounds the needle and extends away from the hub portion toward the forward end of the needle, the limiter portion includes a generally flat skin engaging surface extending through a plane that is generally perpendicular to an axis of the needle and is adapted to be received against the skin of an animal to receive an intradermal injection of a vaccine, the needle forward end extending beyond the skin engaging surface from approximately 0.5 mm to approximately 3 mm such that the limiter portion limits penetration of the needle to the dermis layer of the skin of an animal so that the vaccine is injected into the dermis layer of the 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.
294 Citations
27 Claims
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1. A hypodermic needle assembly for use in intradermally injecting vaccines into the skin of an animal, comprising:
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a hub portion that is able to be attached to a prefillable container for storing a vaccine;
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 surrounds the needle and extends away from the hub portion toward the forward end of the needle, the limiter portion includes a generally flat skin engaging surface extending through a plane that is generally perpendicular to an axis of the needle and is adapted to be received against the skin of an animal to receive an intradermal injection of a vaccine, the needle forward end extending beyond the skin engaging surface from approximately 0.5 mm to approximately 3 mm such that the limiter portion limits penetration of the needle to the dermis layer of the skin of an animal so that the vaccine is injected into the dermis layer of the animal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An intradermal delivery device for use in intradermally injecting vaccines into the skin of an animal, comprising:
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a prefillable container having a reservoir adapted to contain a selected vaccine and an outlet port that allows the vaccine to exit 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 surrounds the needle and has a generally flat skin engaging surface extending through a plane that is generally perpendicular to an axis of the needle and is adapted to be placed against the skin of the animal to receive an intradermal injection of a vaccine, the needle forward end extending away from the skin engaging surface from approximately 0.5 mm to approximately 3 mm such that the limiter limits penetration of the needle forward end to the dermis layer of the skin of an animal so that the vaccine is injected into the dermis layer of the animal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of intradermally injecting at least one vaccine into the skin so that the vaccine is only injected into the dermis layer of the skin, comprising the steps of:
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pressing a needle having a diameter no greater than that of a 30 gauge needle perpendicularly to the skin of an animal to receive an injection, said needle in fluid communication with an outlet port of a prefillable container having a reservoir adapted to contain a selected vaccine and the outlet port allows the vaccine to exit the reservoir during an intradermal injection of the vaccine;
injecting the vaccine into the dermis layer of the skin of the animal with the depth of penetration of the needle being limited to the intradermal space by a limiter that surrounds the needle and has a generally flat skin engaging surface extending through a plane that is generally perpendicular to an axis of the needle and adapted to be placed against the skin of the animal and a forward end of the needle extending away from the skin engaging surface from approximately 0.5 mm to approximately 3 mm such that the limiter limits penetration of the needle forward end to the dermis layer of the skin of the animal so that the vaccine is injected into the dermis layer of the animal. - View Dependent Claims (24, 25, 26, 27)
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Specification