Intradermal delivery device and method
First Claim
1. A delivery device comprising:
- a housing including a base defining a first skin-engaging surface portion forming a needle aperture and defining a substantially planar target penetration region of skin, and a second skin-engaging surface portion extending radially relative to the first skin-engaging surface portion to substantially prevent relative movement of the skin and the base and releasably secure the base to the skin;
a syringe including a syringe body coupled to the housing, a plunger slidably received within the syringe body and a needle in fluid communication with the syringe body, wherein the needle is movable through the needle aperture upon slidably moving the syringe through the housing to thereby insert the needle into the substantially planar target penetration region of the skin and inject a substance contained within the syringe; and
at least one stop surface fixed relative to at least a portion of the first skin-engaging surface and adapted to cooperate with the syringe to limit a depth of insertion of the needle into the substantially planar target penetration region of the skin.
3 Assignments
0 Petitions
Accused Products
Abstract
The subject intradermal delivery device provides for penetration to a fixed depth without requiring special expertise by the user. The device consists of a syringe nested inside an inner shell and an outer shell. An elongated annular channel is formed between the inner shell and the outer shell. A housing receives the syringe and concentric shells in a sliding engagement. A first seal on the distal end of the housing forms a variable length channel in communication with the elongated annular channel via a port formed in the outer shell. When the device is applied to the skin, the housing and syringe are slid towards the skin, and the variable length channel generates a vacuum which forces the skin to bulge into the elongated annular channel. As a result, the skin is tensioned across the inner shell to form a substantially planar, taut target area of skin. The taut target area of skin in combination with a stop on the housing determines the insertion depth of the syringe.
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Citations
27 Claims
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1. A delivery device comprising:
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a housing including a base defining a first skin-engaging surface portion forming a needle aperture and defining a substantially planar target penetration region of skin, and a second skin-engaging surface portion extending radially relative to the first skin-engaging surface portion to substantially prevent relative movement of the skin and the base and releasably secure the base to the skin; a syringe including a syringe body coupled to the housing, a plunger slidably received within the syringe body and a needle in fluid communication with the syringe body, wherein the needle is movable through the needle aperture upon slidably moving the syringe through the housing to thereby insert the needle into the substantially planar target penetration region of the skin and inject a substance contained within the syringe; and at least one stop surface fixed relative to at least a portion of the first skin-engaging surface and adapted to cooperate with the syringe to limit a depth of insertion of the needle into the substantially planar target penetration region of the skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 27)
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13. A method for delivering a substance into a patient comprising the steps of:
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(a) providing a delivery device including a housing having a base defining a first skin-engaging surface portion forming a needle aperture and defining a substantially planar target penetration region of skin, and a second skin-engaging surface portion extending radially relative to the first skin-engaging surface portion to substantially prevent relative movement of the skin and the base, and releasably secure the base to the skin; (b) reciprocally mounting a syringe in the housing, the syringe having a syringe body for storing a substance, a plunger slidably received within the syringe body and a needle in fluid communication with the syringe body; (c) releasably securing the first and second skin-engaging surface portions on the skin of the patient; (d) forming the substantially planar target penetration region of the skin; (e) inserting the needle of the syringe into the substantially planar target penetration region of the skin upon slidably moving the syringe through the housing; (f) controlling a depth of insertion of the needle into the substantially planar target penetration region with at least one stop surface fixed relative to at least a portion of the first skin-engaging surface for determining the depth in cooperation with the syringe; and (g) injecting the substance from the syringe body through the needle into the patient. - View Dependent Claims (14, 15, 16)
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17. A delivery device comprising:
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first means for defining a substantially planar target region of skin; second means for releasably securing the first means to the skin and preventing relative movement of the substantially planar target region of the skin and the first means; third means for storing a substance to be injected into the skin; fourth means for releasing the substance from the third means; fifth means in fluid communication with the third means for penetrating the substantially planar target region of the skin and injecting the substance contained within the third means; and sixth means fixed relative to the first means for limiting a depth of insertion of the fifth means. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification