Dispenser components and methods for patient infusion device
First Claim
1. A device for delivering fluid to a patient, comprising:
- an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a tube coaxially received on the lead screw and including a longitudinal slot;
a pin extending through the lead screw and the slot of the tube; and
a gear secured to the tube for rotation therewith.
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0 Petitions
Accused Products
Abstract
A device for delivering fluid to a patient including an exit port assembly, a reservoir including a side wall extending towards an outlet connected to the exit port assembly, a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet, and a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir. A tube is coaxially received on the lead screw and includes a longitudinal slot, a pin extending through the lead screw and the slot of the tube, and a gear is secured to the tube for rotation therewith.
546 Citations
180 Claims
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1. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a tube coaxially received on the lead screw and including a longitudinal slot;
a pin extending through the lead screw and the slot of the tube; and
a gear secured to the tube for rotation therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet, the lead screw including one of a longitudinal extending groove and a laterally extending pin;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir; and
a housing containing the reservoir, the lead screw and the plunger and including the other of the longitudinal extending groove and the laterally extending pin, wherein the laterally extending pin is slidingly received within the longitudinally extending groove to allow longitudinal advancement of the lead screw and prevent rotation of the lead screw. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 89)
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82. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a gear radially extending from the lead screw, wherein the gear and the lead screw are operatively connected such that rotation of the gear about the lead screw causes longitudinally movement of the lead screw towards the outlet of the reservoir; and
a ratchet member including arms pivotally secured on the lead screw on opposite sides of the gear and including a ratchet engaging teeth of the gear such that pivotal movement of the ratchet member about the lead screw in a first direction causes rotation of the gear while pivotal movement of the ratchet member about the lead screw in a second direction causes no rotation of the gear. - View Dependent Claims (83, 84, 85, 86, 87, 88)
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90. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a gear radially extending from the lead screw, wherein the gear and the lead screw are operatively connected such that rotation of the gear about the lead screw causes longitudinally movement of the lead screw towards the outlet of the reservoir; and
a ratchet member including, spaced-apart feet movable in first and second opposing directions with respect to the gear, a resiliently flexible arch extending between the spaced-apart feet and towards the gear, a ratchet extending from the arch and engaging teeth of the gear such that movement of the ratchet member in the first direction causes rotation of the gear while movement of the ratchet member in the second direction with respect to the gear causes no rotation of the gear and causes deflection of the arch away from the gear. - View Dependent Claims (91, 92, 93, 94, 95, 96, 97, 98, 99)
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100. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a gear radially extending from the lead screw, wherein the gear and the lead screw are operatively connected such that rotation of the gear causes longitudinally movement of the lead screw towards the outlet of the reservoir; and
a ratchet member including, an anchor fixed in position with respect to the gear, a ratchet engaging teeth of the gear such that movement of the ratchet in a first direction causes rotation of the gear while movement of the ratchet in a second direction causes no rotation of the gear, and a spring connecting the anchor and the ratchet and biasing the ratchet in one of the first and the second directions. - View Dependent Claims (101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111)
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112. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir; and
a non-rotating nut assembly receiving the lead screw and including, at least two laterally movable threaded inserts having threaded surfaces for threadedly receiving the lead screw upon being biased laterally inwardly against the lead screw, a spring biasing the threaded inserts laterally inwardly against the lead screw; and
at least one spacer cam movable between a first position preventing the threaded inserts from being biased laterally inwardly against the lead screw and a second position allowing the threaded inserts to be biased laterally inwardly against the lead screw. - View Dependent Claims (113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125)
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126. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet, the lead screw comprised of electrically resistive material;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a non-rotating longitudinally fixed nut made from electrically conductive material, the nut threadedly receiving the lead screw such that rotation of the lead screw causes linear movement of the lead screw with respect to the nut; and
a processor connected to the nut and the lead screw and programmed to detect an electrical signal between the nut and the lead screw. - View Dependent Claims (127, 128, 129, 130, 131)
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132. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a non-rotating longitudinally fixed nut threadedly receiving the lead screw such that rotation of the lead screw causes linear movement of the lead screw with respect to the nut; and
a rotary motor mated to a proximal end of the lead screw for causing rotation of the lead screw relative to the motor; and
a longitudinal guide extending parallel with the lead screw and receiving the motor, wherein the guide allows longitudinal movement of the motor and prevents rotation of the motor. - View Dependent Claims (133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143)
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144. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a non-rotating longitudinally fixed nut threadedly receiving the lead screw such that rotation of the lead screw causes linear movement of the lead screw with respect to the nut;
an encoder disk coaxially secured to the lead screw for rotation therewith and including radially spaced light reflective indicia thereon;
a light emitter directed at the encoder disk; and
a light detector directed at the encoder disk. - View Dependent Claims (145, 146, 147, 148, 149, 150, 151)
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152. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a gear radially extending from the lead screw, wherein the gear and the lead screw are operatively connected such that rotation of the gear causes longitudinally movement of the lead screw towards the outlet of the reservoir, wherein a face of the gear includes radially spaced bumps thereon, and one of the face and the bumps are electrically conductive; and
an electrically conductive brush biased against the face of the gear. - View Dependent Claims (153, 154, 155, 156, 157, 158)
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159. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir;
a gear radially extending from the lead screw and made from electrically conductive material, wherein the gear and the lead screw are operatively connected such that rotation of the gear causes longitudinally movement of the lead screw towards the outlet of the reservoir;
a ratchet engaging teeth of the gear such that movement of the ratchet in a first direction causes rotation of the gear while movement of the ratchet in a second direction causes no rotation of the gear, wherein the ratchet is made from electrically conductive material;
a first electrical lead connected to the gear; and
a second electrical lead connected to the ratchet. - View Dependent Claims (160, 161, 162, 163, 164, 165, 166, 167)
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168. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir, such that linear movement of the lead screw towards the outlet of the reservoir forces fluid within the reservoir through the outlet to the exit port assembly;
a sensor detecting linear movement of the lead screw;
an elongated shape memory element having a changeable length decreasing from an uncharged length to a charged length when at least one charge is applied to the shape memory element, wherein the shape memory element is operatively connected to the lead screw such that the changeable length of the shape memory element decreasing from an uncharged length to a charged length causes linear movement of the lead screw towards the outlet of the reservoir; and
a processor connected to the shape memory element and the sensor detecting linear movement of the lead screw, and programmed to apply a charge to the shape memory element and remove the charge upon receiving a signal from the sensor indicative of linear movement of the lead screw. - View Dependent Claims (169, 170, 171, 172, 173)
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174. A device for delivering fluid to a patient, comprising:
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an exit port assembly;
a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
a threaded lead screw received at least partly in the reservoir and longitudinally extending towards the outlet;
a plunger secured to the lead screw and having an outer periphery linearly slideable along the side wall of the reservoir, such that linear movement of the lead screw towards the outlet of the reservoir forces fluid within the reservoir through the outlet to the exit port assembly;
a reflector secured to the lead screw;
at least one light emitter fixed with respect to the lead screw and directed longitudinally at the reflector; and
at least one light detector fixed with respect to the lead screw and directed longitudinally at the reflector. - View Dependent Claims (175, 176, 177, 178, 179, 180)
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Specification