MEDICAMENT MIXING AND INJECTION APPARATUS
First Claim
1. Medicament mixing and injection apparatus comprising:
- an injection needle assembly including a needle extending along an injection axis and a needle base to which said needle is fixed;
a syringe attachment element configured at a first axial end thereof to receive a needleless syringe and a second axial end thereof to engage said needle base in at least first and second relative engagement orientations which are mutually axially separated along said injection axis; and
a medicament mixing chamber engagement assembly including;
an intermediate portion having a hand-engageable portion, said intermediate element including a needle chamber surrounding said needle and a first liquid conduit portion, sealed from said needle chamber; and
a medicament mixing chamber engagement portion including a second liquid conduit portion communicating with said first liquid conduit portion and configured for communication with a medicament mixing chamber,said syringe attachment element and said needle base being configured to permit liquid communication between an interior of said needleless syringe and said first liquid conduit portion when said syringe attachment element and said needle base are in said first relative engagement orientation and to permit liquid communication between an interior of said needleless syringe and said needle when said syringe attachment element and said needle base are in said second relative engagement orientation, axially separated from said first relative orientation along said injection axis.
5 Assignments
0 Petitions
Accused Products
Abstract
A mixing and injection apparatus including a needle and a needle base, a syringe attachment element and a mixing chamber engagement assembly including a needle chamber surrounding the needle and a first liquid conduit portion, sealed from the needle chamber and a mixing chamber engagement portion including a second liquid conduit portion communicating with the first liquid conduit portion and configured for communication with a mixing chamber, the syringe attachment element and the needle base being configured to permit liquid communication between an interior of the syringe and the first liquid conduit portion when the syringe attachment element and the needle base are in the first relative engagement orientation and to permit liquid communication between an interior of the syringe and the needle when the syringe attachment element and the needle base are in the second relative engagement orientation, axially separated from the first relative orientation along the injection axis.
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Citations
7 Claims
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1. Medicament mixing and injection apparatus comprising:
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an injection needle assembly including a needle extending along an injection axis and a needle base to which said needle is fixed; a syringe attachment element configured at a first axial end thereof to receive a needleless syringe and a second axial end thereof to engage said needle base in at least first and second relative engagement orientations which are mutually axially separated along said injection axis; and a medicament mixing chamber engagement assembly including; an intermediate portion having a hand-engageable portion, said intermediate element including a needle chamber surrounding said needle and a first liquid conduit portion, sealed from said needle chamber; and a medicament mixing chamber engagement portion including a second liquid conduit portion communicating with said first liquid conduit portion and configured for communication with a medicament mixing chamber, said syringe attachment element and said needle base being configured to permit liquid communication between an interior of said needleless syringe and said first liquid conduit portion when said syringe attachment element and said needle base are in said first relative engagement orientation and to permit liquid communication between an interior of said needleless syringe and said needle when said syringe attachment element and said needle base are in said second relative engagement orientation, axially separated from said first relative orientation along said injection axis. - View Dependent Claims (2, 3, 4)
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5. A medicament mixing and injection method comprising:
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providing a medicament mixing and injection assembly including a needle extending along an injection axis and a needle base to which said needle is fixed, a syringe attachment element configured at a first axial end thereof to receive a needleless syringe and an a second axial end thereof to engage said needle base in at least first and second relative engagement orientations which are mutually axially separated along said injection axis and a medicament mixing chamber engagement assembly; associating a medicament mixing chamber with said medicament mixing chamber engagement assembly; attaching a syringe to said syringe attachment element; mixing a medicament in said medicament mixing chamber when said syringe attachment element and said needle base are in said first relative engagement orientation and drawing mixed medicament into said syringe; providing relative axial displacement of said needle base and said syringe attachment element along said injection axis—
such that said syringe attachment element and said needle base are in said second relative engagement orientation;disengaging said medicament mixing chamber engagement assembly from said syringe attachment element; and injecting the mixed medicament from said syringe through said needle. - View Dependent Claims (6, 7)
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Specification