Multi-stage mixing syringe
AssigneeNeomed, Inc.
InventorsBenjamin Martin DAVIS, Mariann WOLVERTON, Elizabeth MURAYA, Aaron N. INGRAM
Life of this patent
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Abstract
A system and method for mixing fluid constituents within a multi-stage mixing syringe, and delivering the mixture formed in the mixing syringe. The multi-stage mixing syringe system includes an outer syringe barrel defining a first contained volume therein, an intermediate syringe barrel and plunger configured for coupling within the outer syringe barrel and for advancement and retraction within the first contained volume, and defining a second contained volume therein, and an inner syringe plunger configured for coupling within the intermediate syringe barrel and plunger and for advancement and retraction within the second contained volume.
Claims18
A multi-stage mixing syringe system comprising:
- an outer syringe barrel defining a first contained volume therein for receiving a first enteral fluid constituent, and an enteral fluid delivery port at a distal end of the outer syringe barrel in fluid communication with the first contained volume;
- an intermediate syringe barrel and plunger configured for coupling within the outer syringe barrel and for advancement and retraction within the first contained volume, and defining a second contained volume therein for receiving a second enteral fluid constituent;
- and
- an inner syringe plunger configured for coupling within the intermediate syringe barrel and plunger and for advancement and retraction within the second contained volume.
A multi-stage enteral syringe for mixing and delivering enteral fluid comprising:
- an outer syringe barrel defining a first internal chamber and comprising an enteral fluid delivery port in fluid communication with the first internal chamber;
- an intermediate syringe barrel and plunger received in sealing engagement within the first internal chamber of the outer syringe barrel, the intermediate syringe barrel and plunger defining a second internal chamber and comprising a fluid transfer port providing fluid communication between the first and second internal chambers;
- an inner plunger received in sealing engagement within the second internal chamber of the intermediate syringe barrel and plunger;
- and
- an enteral fluid constituent material preloaded within the second internal chamber of the intermediate syringe barrel and plunger.
A method of mixing first and second constituent materials to form an enteral fluid mixture and delivering the enteral fluid mixture to a human or animal subject, the method comprising:
- at least partially filling a first syringe stage of a multi-stage mixing syringe with the first constituent material;
- at least partially filling a second stage of the multi-stage mixing syringe with the second constituent material;
- actuating the first syringe stage of the multi-stage mixing syringe to mix the first and second constituent materials together to form the enteral fluid mixture;
- and
- actuating the second stage of the multi-stage mixing syringe to deliver the enteral fluid mixture to the gastrointestinal system of a human or animal subject.
Dependencies are inferred from the claim text.