Prefillable intradermal injector
First Claim
1. A prefillable intradermal injector for use in intradermally injecting substances into the skin of an animal comprising:
- a prefillable reservoir adapted to store a substance and having an outlet port at a first end enabling the substance to be expelled from said reservoir and a stopper in a second open end;
a needle cannula defining an axis and said needle cannula in fluid communication with said reservoir to receive the substance from said outlet port and having a forward tip adapted to penetrate the skin of an animal;
a limiter surrounding said needle cannula, said limiter including a generally flat skin engaging surface extending in a plane generally perpendicular to an axis of said needle cannula, said limiter limiting penetration of said forward tip of said needle cannula into the dermis layer of the skin of the animal; and
a sleeve having a first end and a second end, said sleeve surrounding and slidable relative to said reservoir along said axis and said sleeve fixed relative to said stopper whereby movement of said sleeve causes said stopper to move through said reservoir to expell said substance from said reservoir through said needle cannula.
1 Assignment
0 Petitions
Accused Products
Abstract
A prefillable delivery device for administering intradermal injections includes a prefillable container adapted to store a substance. The substance is expelled through a needle cannula having a forward tip adapted to administer the intradermal injection. A limiter surrounds the needle cannula having a generally flat skin engaging surface extending in a plane generally perpendicular to the needle cannula. An insert is centrally located within the skin engaging surface and is piercable by the forward tip. A sleeve with a first end and a second end surrounds the prefillable container. The limiter is slidably inserted through the first end and the second end is affixed to a depressable plunger for expelling the substance from the container. The limiter is movable between a first position and a second position thereby exposing the forward tip and is selectively movable between a third position and a fourth position thereby concealing the forward tip.
-
Citations
30 Claims
-
1. A prefillable intradermal injector for use in intradermally injecting substances into the skin of an animal comprising:
-
a prefillable reservoir adapted to store a substance and having an outlet port at a first end enabling the substance to be expelled from said reservoir and a stopper in a second open end;
a needle cannula defining an axis and said needle cannula in fluid communication with said reservoir to receive the substance from said outlet port and having a forward tip adapted to penetrate the skin of an animal;
a limiter surrounding said needle cannula, said limiter including a generally flat skin engaging surface extending in a plane generally perpendicular to an axis of said needle cannula, said limiter limiting penetration of said forward tip of said needle cannula into the dermis layer of the skin of the animal; and
a sleeve having a first end and a second end, said sleeve surrounding and slidable relative to said reservoir along said axis and said sleeve fixed relative to said stopper whereby movement of said sleeve causes said stopper to move through said reservoir to expell said substance from said reservoir through said needle cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of administering an intradermal injection through a needle cannula from a prefillable intradermal injector having a substance stored in a reservoir in fluid communication with a needle cannula defining an axis, comprising the steps of:
-
providing a limiter slideably disposed on said reservoir and having a generally flat skin engaging surface extending in a plane generally perpendicular to said axis of said needle cannula having a forward tip located within said limiter;
moving said limiter in a first direction relative to said reservoir to expose said forward tip, wherein said limiter limits penetration of the forward tip of said needle cannula into the dermis layer of the skin;
expelling the substance from said reservoir through said needle cannula into the skin of an animal; and
moving said limiter in a second direction relative to said reservoir to enclose said forward tip inside said limiter. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
-
-
24. A prefillable intradermal injector, comprising:
-
a reservoir prefillable with a substance having a generally closed proximal end and an open distal end;
a needle cannula having a distal end in fluid communication with said substance in said reservoir extending through said proximal end and an exposed forward tip;
a stopper slideably received in said open distal end of said reservoir moveable in said reservoir to expel said substance through said forward tip of said needle cannula; and
a limiter having a distal end slideably supported around said reservoir and moveable relative to said reservoir and a generally closed proximal end including a flat skin engaging surface having an opening therethrough receiving said forward tip of said needle cannula therethrough as said limiter moves relative to said reservoir and said limiter limiting extension of said forward tip of said needle cannula beyond said skin engaging surface a distance of more than 3.0 mm. - View Dependent Claims (25, 26, 27, 28, 29, 30)
-
Specification