DRUG DELIVERY DEVICE
First Claim
Patent Images
1. A drug delivery device comprising:
- a blunt cannula having a cylindrical wall that defines an axial passage between a first end and a second end of the blunt cannula, the wall having at least a first tapered region at the first end to define an opening in fluid communication with the axial passage and adapted at the first end to resist interruption of fluid flow through the axial passage and out of the first end of the blunt cannula; and
a reservoir connected to the second end of the blunt cannula.
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Abstract
A drug delivery device includes a blunt cannula and a reservoir. The blunt cannula has a cylindrical wall that defines an axial passage between a first end and a second end of the blunt cannula. The wall has at least a first tapered region at the first end to define an opening in fluid communication with the axial passage and adapted at the first end to resist interruption of fluid flow through the axial passage and out of the first end of the blunt cannula. The reservoir is connected to the second end of the blunt cannula.
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Citations
39 Claims
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1. A drug delivery device comprising:
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a blunt cannula having a cylindrical wall that defines an axial passage between a first end and a second end of the blunt cannula, the wall having at least a first tapered region at the first end to define an opening in fluid communication with the axial passage and adapted at the first end to resist interruption of fluid flow through the axial passage and out of the first end of the blunt cannula; and a reservoir connected to the second end of the blunt cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A drug delivery device comprising:
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a blunt cannula having a cylindrical wall that defines an axial passage between a closed first end and a second end of the blunt cannula, the wall having a first tapered region at the first end with at least one side opening in fluid communication with the axial passage adapted to resist interruption of fluid flow through the axial passage and out of the first end of the blunt cannula; and a reservoir connected to the second end of the blunt cannula. - View Dependent Claims (22)
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23. A drug delivery device comprising:
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a blunt cannula having a cylindrical wall that defines an axial passage between a first end and a second end of the blunt cannula, the wall having in a first tapered region at the first end to define an opening in fluid communication with the axial passage; a vibration generator coupled to the blunt cannula, the generator being actuated to resist interruption of fluid flow through the axial passage and out of the first end of the blunt cannula; and a reservoir connected to the second end of the blunt cannula. - View Dependent Claims (24, 25, 26)
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27. A drug delivery device comprising:
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a rigid needle having a cylindrical wall that defines an axial passage between a first end and a second end of the rigid needle, the wall having an opening at the first end in fluid communication with the axial passage and adapted at the first end to resist interruption of fluid flow through the axial passage and out of the first end of the rigid needle; and a reservoir connected to the second end of the rigid needle, wherein the adaptation at the first end includes at least one of a pattern of openings disposed about the opening in the first tapered region, and at least one external recessed region recessed toward the axial passage relative to adjoining surface regions. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. A drug delivery device comprising:
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a rigid needle having a cylindrical wall that defines an axial passage between a first end and a second end of the rigid needle, the wall having an opening at the first end in fluid communication with the axial passage; a vibration generator coupled to the rigid needle, the generator being actuated to resist interruption of fluid flow through the axial passage and out of the first end of the rigid needle; and a reservoir connected to the second end of the rigid needle. - View Dependent Claims (35, 36, 37, 38)
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39-47. -47. (canceled)
Specification