Self administered injection pen apparatus and method
First Claim
1. A medicament injection apparatus comprising:
- a housing having;
an exterior surface, and enclosing an interior volume;
a first end; and
a second end opposite said first end;
a needle shroud removably affixed to said first end of said housing and having an open end removed from said housing;
a medicament injection assembly, movably mounted in said interior volume of said housing, including;
an automatic dosing assembly including an automatic dose knob having a stop position,wherein upon moving said automatic dose knob to said stop position said automatic dose assembly is set for a predetermined dose; and
upon engagement and activation of a motive force supplied by said automatic dosing assembly, a plurality of assemblies of said medicament injection assembly move from a first position to a second position in a first direction wherein said first direction is towards said open end of said needle shroud.
1 Assignment
0 Petitions
Accused Products
Abstract
A medicament injection apparatus for subcutaneous or intramuscular delivery of a medicament conceals the needle behind a needle shroud. On apparatus activation, the needle is trust forward, pushing the needle tip outside the needle shroud with enough force to puncture the skin. The needle is thus automatically introduced into the tissue at the proper needle\skin orientation. In the same action, the apparatus automatically dispenses an accurate pre-set dose. The dose can be set by a manual, variable dosing assembly or by an automatic dosing assembly. The automatic dosing assembly includes a safety mechanism preventing the pre-set dose from being changed except by a doctor or patient using a special wrench or tool.
525 Citations
62 Claims
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1. A medicament injection apparatus comprising:
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a housing having; an exterior surface, and enclosing an interior volume; a first end; and a second end opposite said first end; a needle shroud removably affixed to said first end of said housing and having an open end removed from said housing; a medicament injection assembly, movably mounted in said interior volume of said housing, including; an automatic dosing assembly including an automatic dose knob having a stop position, wherein upon moving said automatic dose knob to said stop position said automatic dose assembly is set for a predetermined dose; and upon engagement and activation of a motive force supplied by said automatic dosing assembly, a plurality of assemblies of said medicament injection assembly move from a first position to a second position in a first direction wherein said first direction is towards said open end of said needle shroud. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A medicament injection apparatus comprising:
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a housing having; an exterior surface and enclosing an interior volume; a first end; and a second end opposite said first end; a needle shroud removably affixed to said first end of said housing and having an open end removed from said housing; a medicament cartridge assembly movably mounted, in said interior volume of said housing so that upon application of a motive force, said medicament cartridge assembly moves from a first position to a second position in a first direction wherein said first direction is towards said open end of said needle shroud, and further wherein said medicant cartridge includes; a first end; a second end opposite said first end wherein said second end is fashioned to accept a medicament cartridge having a first sealed end and a second end opposite said first sealed end which contains a movable plunger and; a variable dosing assembly having a first end removably affixed to said second end of said medicament cartridge assembly and a second end wherein; said variable dosing assembly is selectively engaged by said user to control a predetermined and adjustable amount of medicament expelled from said medicament cartridge following application of said motive force; and an automatic dosing assembly removably affixed to said second end of said variable dosing assembly and mounted in said interior volume of said housing, said automatic dosing assembly including an automatic dose knob having a stop position; wherein upon moving said automatic dose knob to said stop position said automatic dose assembly is set for a predetermined dose; and upon engagement and actuation of said automatic dosing assembly, said automatic dosing assembly supplies said motive force to said variable dosing assembly and said medicament cartridge assembly thereby moving said variable dosing assembly and said medicament cartridge assembly from said first position to said second position. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification