Prefillable intradermal delivery device
First Claim
1. A method of injecting a medical substance into the skin using a delivery device so that the medical substance is only injected into the dermis layer of the skin, comprising the steps of:
- providing said delivery device comprising a prefillable container adapted for storing a medical substance;
pressing a needle cannula attached to said delivery device said needle cannula having a forward tip extending away from said delivery device and a hub portion secured around said needle cannula and a limiter portion surrounding said needle cannula and extending away from said hub portion toward said forward tip of said needle cannula, said limiter portion, said forward tip extending a pre-selected fixed distance beyond a skin engaging surface of approximately 0.5 mm to approximately 3 mm,engaging the surface of the skin with the skin engaging surface extending in a plane generally perpendicular to an axis of said needle cannula wherein said limiter portion limits penetration of said needle cannula into the dermis layer of the skin of the animal thereby injecting substance into the dermis layer of the animal;
wherein said hub portion defines a locator for said limiter thereby positioning said limiter upon said device; and
deploying an enclosure for concealing said needle cannula after administering said intradermal injection, wherein said enclosure does not comprise any portion of said limiter.
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Accused Products
Abstract
An intradermal delivery method for use in intradermally injecting substances into the skin of an animal includes a needle cannula supported by a hub portion that is attachable to a prefillable container. A limiter portion surrounds the needle cannula and extends away from the hub portion toward a forward tip of the needle cannula. The limiter portion includes a skin engaging surface extending in a plane generally perpendicular to an axis of the needle cannula. The skin engaging surface is received against skin of an animal to administer an intradermal injection. The forward tip extends beyond the skin engaging surface a distance that enables penetration of the needle cannula into the dermis layer of the skin of the animal enabling injection of the substance into the dermis layer of the animal. The device includes enclosure means that is moveable for concealing the needle cannula after the injection has been administered.
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Citations
20 Claims
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1. A method of injecting a medical substance into the skin using a delivery device so that the medical substance is only injected into the dermis layer of the skin, comprising the steps of:
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providing said delivery device comprising a prefillable container adapted for storing a medical substance; pressing a needle cannula attached to said delivery device said needle cannula having a forward tip extending away from said delivery device and a hub portion secured around said needle cannula and a limiter portion surrounding said needle cannula and extending away from said hub portion toward said forward tip of said needle cannula, said limiter portion, said forward tip extending a pre-selected fixed distance beyond a skin engaging surface of approximately 0.5 mm to approximately 3 mm, engaging the surface of the skin with the skin engaging surface extending in a plane generally perpendicular to an axis of said needle cannula wherein said limiter portion limits penetration of said needle cannula into the dermis layer of the skin of the animal thereby injecting substance into the dermis layer of the animal;
wherein said hub portion defines a locator for said limiter thereby positioning said limiter upon said device; anddeploying an enclosure for concealing said needle cannula after administering said intradermal injection, wherein said enclosure does not comprise any portion of said limiter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of injecting a medical substance into the skin using a delivery device so that the medical substance is only injected into the dermis layer of the skin, comprising the steps of:
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providing a prefillable container having a reservoir adapted to contain a selected substance and an outlet port that allows the substance to be expelled from said reservoir during an injection with a needle cannula in fluid communication with said outlet port and having a forward tip adapted to penetrate the skin of an animal; placing against the skin a limiter surrounding said needle and having a generally flat skin engaging surface extending in a plane generally perpendicular to an axis of said needle cannula; administering an intradermal injection of the substance, said needle forward tip extending away from the said skin engaging surface a pre-selected, fixed distance from approximately 0.5 mm to approximately 3 mm such that said limiter limits penetration of said forward tip into the dermis layer of the skin of the animal thereby injecting the substance into the dermis layer of the animal; and deploying an enclosure moveable to conceal said needle cannula. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification