Fluid transfer devices with resilient valve structures and ambulatory infusion devices including same
First Claim
Patent Images
1. An infusion device, comprising:
- a fluid transfer device includinga pump, anda valve, associated with the pump, having a valve base defining a lumen having an outlet and a seal surface that extends around the lumen outlet, and a resilient structure stretched over the valve base seal surface and the lumen outlet and including a valve member movable between a closed state where the valve member engages the seal surface and an open state where at least a portion of the valve member is spaced apart from the seal surface;
an infusion device outlet operably connected to the fluid transfer device; and
a reservoir operably connected to the fluid transfer device.
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Accused Products
Abstract
Fluid transfer devices for use in, for example, ambulatory infusion devices and infusions devices including fluid transfer devices.
18 Citations
26 Claims
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1. An infusion device, comprising:
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a fluid transfer device including a pump, and a valve, associated with the pump, having a valve base defining a lumen having an outlet and a seal surface that extends around the lumen outlet, and a resilient structure stretched over the valve base seal surface and the lumen outlet and including a valve member movable between a closed state where the valve member engages the seal surface and an open state where at least a portion of the valve member is spaced apart from the seal surface; an infusion device outlet operably connected to the fluid transfer device; and a reservoir operably connected to the fluid transfer device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An infusion device, comprising:
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a fluid transfer device including a pump, and a valve, associated with the pump, having a valve base defining a lumen having an outlet, a seal surface that extends around the lumen outlet and an outer diameter, and a cup-shaped resilient structure defining a relaxed inner diameter that is substantially less than the outer diameter of the valve base, mounted in tension on the valve base, including a valve member movable between a closed state where the valve member engages the seal surface and an open state where at least a portion of the valve member is spaced apart from the seal surface; an infusion device outlet operably connected to the fluid transfer device; and a reservoir operably connected to the fluid transfer device. - View Dependent Claims (12, 13, 14, 15)
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16. An infusion device, comprising:
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a fluid transfer device having an inlet valve including a valve base defining a lumen having an outlet and a seal surface that extends around the lumen outlet, and a resilient membrane including at least one narrow opening, mounted on the valve base, and a valve member associated with the narrow opening and movable between a closed state where the valve member engages the seal surface and an open state where at least a portion of the valve member is spaced apart from the seal surface, and a pump including an inlet chamber adjacent to the resilient membrane, and a piston including an end surface that is biased to a position where the end surface the holds the valve member against the seal surface and is movable to a pull-back position where the end surface is in spaced relation to the resilient structure; an infusion device outlet operably connected to the fluid transfer device; and a reservoir operably connected to the inlet valve of the fluid transfer device. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An infusion device, comprising:
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a fluid transfer device having an inlet valve including a valve base defining a lumen having an outlet, a seal surface that extends around the lumen outlet and an outer diameter, and a cup-shaped resilient membrane, defining a relaxed inner diameter that is substantially less than the outer diameter of the valve base and including at least one narrow opening, mounted on the valve base, and a valve member associated with the narrow opening and movable between a closed state where the valve member engages the seal surface and an open state where at least a portion of the valve member is spaced apart from the seal surface, and a pump including an inlet chamber adjacent to the resilient membrane, and a piston including an end surface that is biased to a position where the end surface the holds the valve member against the seal surface and is movable to a pull-back position where the end surface is in spaced relation to the resilient structure; an infusion device outlet operably connected to the fluid transfer device; and a reservoir operably connected to the inlet valve of the fluid transfer device. - View Dependent Claims (24, 25, 26)
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Specification