INFUSION PUMPS
2 Assignments
0 Petitions
Accused Products
Abstract
Ambulatory infusion pumps, pump assemblies, cartridges, baseplates, cannulas, insertion tools, and related components as well as combinations thereof and related methods.
47 Citations
62 Claims
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1-29. -29. (canceled)
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30. A method of dispensing medicament from a cartridge having a reservoir, defining a total filled volume, and a plunger, the method comprising the step of:
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pushing the plunger so as to controllably dispense out of the medicament reservoir an amount of medicament of 0.1% or less of the total filled volume of the reservoir and with a single-dose precision of better than plus or minus 20%; wherein the precision is obtained after a dispensing period of less than eight hours. - View Dependent Claims (31, 33, 34, 36, 37, 38)
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32. (canceled)
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35. (canceled)
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39. An apparatus, comprising:
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a medicament cartridge having a barrel, defining at least a substantial part of a medicament reservoir having a total filled volume, and a plunger in the barrel; an infusion pump assembly including a housing holding the medicament cartridge and a pusher positioned in the housing and relative to the medicament cartridge to push the plunger so as to controllably dispense out of the reservoir an amount of medicament of 0.1% or less of the total filled volume of the reservoir and with a precision of better than plus or minus 20%; wherein the precision is obtained within a dispensing period of less than eight hours. - View Dependent Claims (40, 42, 48, 49, 50, 51)
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41. (canceled)
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43-47. -47. (canceled)
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52-53. -53. (canceled)
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54. A medicament cartridge, comprising:
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a barrel defining at least a substantial portion of a medicament reservoir having an inner surface and an outlet port; and a plunger, located within the barrel, including a plunger body having an outer surface with a pair of outer plunger-body rings that have tight tolerances with the inner surface of the barrel, a circumferential recessed area between the plunger-body rings, and an o-ring structure, in the circumferential recessed area and compressed by an inner surface of the barrel, having a pair of spaced circumferential compressed rings. - View Dependent Claims (55, 56, 57, 60, 61)
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58-59. -59. (canceled)
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62-619. -619. (canceled)
Specification