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US 2013/0274707 A1Published application
Three-Chambered Autoinjector
OwnerJohn Glyndwr Wilmot, Robert Leavitt Hillinventors
Life of this patent
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Abstract
The present invention relates to a three-chambered autoinjector as well as to the methods of administering medicaments to a human using the three-chambered autoinjector. In certain embodiments, the autoinjector includes a first medicament in liquid form, a second medicament preferably in solid form, and a liquid composition for diluting the second medicament, and utilizes a three-chambered design so as to administer the first medicament and a solution comprising the second medicament and the liquid composition at different injection depths into the body of a human. In an alternative embodiment an autoinjector is provided that delivers medicaments at the same injection depth.
Claims28
Autoinjector comprising:
- a) a housing having a forward end and a rear end;
- b) a rear plunger moveably situated within the housing;
- c) a separation assembly moveably situated within the housing, the separation assembly forwardly situated with respect to the rear plunger;
- d) a separation plunger moveably situated within the housing, the separation plunger forwardly situated with respect to the separation assembly;
- e) a first medicament situated forwardly with respect to the separation plunger, the first medicament in the form of a liquid;
- f) a second medicament situated between the separation plunger and the separation assembly;
- g) a liquid composition situated between the separation assembly and the rear plunger;
- h) a needle having a needle length, a forward end and a rear end, the needle being moveable from a needle storage position in which the needle is situated within the housing to a needle fully extended position in which the needle reaches a maximal extension out of the forward end of the housing;
- and
- i) an activateable power assembly for moving the rear plunger forwardly within the housing.
7 more elements
Autoinjector having three chambers, the autoinjector comprising:
- a) a housing having a forward end and a rear end;
- b) a rear plunger moveably situated within the housing;
- c) a separation assembly moveably situated within the housing, the separation assembly forwardly situated with respect to the rear plunger;
- d) a separation plunger moveably situated within the housing, the separation plunger forwardly situated with respect to the separation assembly;
- e) a first chamber for a liquid composition, the first chamber having a variable volume, the first chamber forwardly confined by the separation assembly and rearwardly confined by the rear plunger;
- f) a second chamber for a second medicament, the second chamber having a variable volume, the second chamber forwardly confined by the separation plunger and rearwardly confined by the separation assembly;
- g) a third chamber for a first medicament, the third chamber having a variable volume, the third chamber rearwardly confined by the separation plunger;
- h) a needle having a needle length, a forward end and a rear end, the needle being moveable from a needle storage position in which the needle is situated within the housing to a needle fully extended position in which the needle reaches a maximal extension out of the forward end of the housing;
- and
- i) an activateable power assembly for moving the rear plunger forwardly within the housing.
7 more elements
Method of administering a first medicament at a first depth and a second medicament at a second depth into the body of a human using an autoinjector, the method comprising the steps of
- a) providing an autoinjector comprising
- i) a housing having a forward end and a rear end;
- ii) a rear plunger moveably situated within the housing;
- iii) a separation assembly moveably situated within the housing, the separation assembly forwardly situated with respect to the rear plunger;
- iv) a separation plunger moveably situated within the housing, the separation plunger forwardly situated with respect to the separation assembly;
- v) a first medicament situated forwardly with respect to the separation plunger, the first medicament in the form of a liquid;
- vi) a second medicament situated between the separation plunger and the separation assembly;
- vii) a liquid composition situated between the separation assembly and the rear plunger;
- viii) a needle having a needle length, a forward end and a rear end, the needle being moveable from a needle storage position in which the needle is situated within the housing to a needle fully extended position in which the needle reaches a maximal extension out of the forward end of the housing;
- and
- ix) an activateable power assembly;
- b) positioning the autoinjector on the body of the human;
- c) activating the power assembly of the autoinjector.
10 more elements
Autoinjector comprising a liquid medicament, a solid medicament and a liquid composition, the autoinjector comprising:
- a) an external housing having a forward end and a rear end;
- b) an internal medicament housing moveably received in the external housing;
- c) a rear plunger moveably situated within the internal medicament housing;
- d) a first separation assembly moveably situated within the internal medicament housing, the first separation assembly forwardly situated with respect to the rear plunger;
- e) a second separation assembly moveably situated within the internal medicament housing, the second separation assembly forwardly situated with respect to the first separation assembly;
- f) a first medicament situated forwardly with respect to the second separation assembly, the first medicament in the form of a liquid;
- g) a second medicament situated between the second separation assembly and the first separation assembly, the second medicament in the form of a solid;
- h) a liquid composition situated between the first separation assembly and the rear plunger;
- i) a needle having a needle length, a forward end and a rear end, the needle being attached to a forward end of the internal medicament housing;
- and
- j) an activateable power assembly for moving the rear plunger forwardly within the internal medicament housing.
8 more elements
Dependencies are inferred from the claim text.