EXTERNAL DRUG PUMP
First Claim
1. An apparatus for administering a substance to a subject, comprising:
- a vital that contains the substance;
a stopper within the vial, slidably coupled to the vial;
a first threaded element (a) rotatable to the vial and (b) substantially immobile proximally with respect to the vial during rotation of the first threaded element; and
a second threaded element that is threadedly coupled to the first threaded element,at least a distal end of the second threaded element substantially non-rotatable with respect to the vial,the distal end of the second threaded element defining a coupling portion that couples the second threaded element to the stopper,the first threaded element, by rotating, linearly advancing the stopper and at least the distal end of the second threaded element toward a distal end of the vial, and more into a dividing stopper within the vial, slidably coupled to the vial;
wherein the vial comprises a distal compartment and a proximal compartment, the distal compartment containing a powder and the proximal compartment containing a liquid, the dividing stopper reversibly inhibiting fluid communication between the distal compartment and the proximal compartment, andwherein the first threaded element, by rotating, mixes the powder and the liquid by advancing the dividing stopper toward the distal end of the vial.
2 Assignments
0 Petitions
Accused Products
Abstract
Apparatus is described for administering a substance to a subject. A vial contains the substance and a stopper is disposed within the vial and is slidably coupled to the vial. A first threaded element is (a) rotatable with respect to the vial and (b) substantially immobile proximally with respect to the vial during rotation of the first threaded element. A second threaded element is threadedly coupled to the first threaded element. At least a distal end of the second threaded element is substantially non-rotatable with respect to the vial, and the distal end of the second threaded element defines a coupling portion that couples the second threaded element to the stopper. The first threaded element, by rotating, linearly advances the stopper and at least the distal end of the second threaded element toward a distal end of the vial. Other embodiments are also described.
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Citations
16 Claims
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1. An apparatus for administering a substance to a subject, comprising:
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a vital that contains the substance; a stopper within the vial, slidably coupled to the vial; a first threaded element (a) rotatable to the vial and (b) substantially immobile proximally with respect to the vial during rotation of the first threaded element; and a second threaded element that is threadedly coupled to the first threaded element, at least a distal end of the second threaded element substantially non-rotatable with respect to the vial, the distal end of the second threaded element defining a coupling portion that couples the second threaded element to the stopper, the first threaded element, by rotating, linearly advancing the stopper and at least the distal end of the second threaded element toward a distal end of the vial, and more into a dividing stopper within the vial, slidably coupled to the vial; wherein the vial comprises a distal compartment and a proximal compartment, the distal compartment containing a powder and the proximal compartment containing a liquid, the dividing stopper reversibly inhibiting fluid communication between the distal compartment and the proximal compartment, and wherein the first threaded element, by rotating, mixes the powder and the liquid by advancing the dividing stopper toward the distal end of the vial. - View Dependent Claims (2, 3, 4)
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5. A method, comprising:
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providing; a vial that contains a substance, and is sealed by a stopper, and first and second threaded elements for placement within the vial, the first and second threaded elements being threadedly coupled to each other, a distal end of the second threaded element being for coupling to the stopper; inserting the vial into a housing base, the threaded elements having been inserted into the vial, and the distal end of the second threaded element having been coupled to the stopper; and pushing the substance out of the vial by advancing the stopper and at least the distal end of the second threaded element toward a distal end of the vial, the advancing being performed by; rotating the first threaded element with respect to the vial, impeding proximal linear motion of the first threaded element with respect to the vial during rotation of the first threaded element, and impeding rotational motion of at least the distal end of the second threaded element with respect to the vial. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification