Plunger for patient infusion device
First Claim
1. A device for delivering fluid to a patient, comprising:
- a) an exit port assembly adapted to connect to a transcutaneous patient access tool;
b) a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
c) at least one threaded lead screw received in the reservoir and extending towards the outlet of the reservoir generally parallel with the side wall;
d) a plunger threadedly received on the lead screw such that rotating one of the lead screw and the plunger moves the plunger within the reservoir; and
e) a dispenser operatively coupled to one of the lead screw and the plunger for rotating one of the lead screw and the plunger.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for delivering fluid to a patient, including an exit port assembly adapted to connect to a transcutaneous patient access tool, a reservoir including a side wall extending towards an outlet connected to the exit port assembly, at least one threaded lead screw received in the reservoir and extending towards the outlet of the reservoir generally parallel with the side wall, and a plunger threadedly received on the lead screw such that rotating one of the lead screw and the plunger moves the plunger within the reservoir. The device also includes a dispenser operatively coupled to one of the lead screw and the plunger for rotating one of the lead screw and the plunger. The lead screw driven plunger reduces the size, complexity and costs of the device so that the device lends itself to being small and disposable in nature.
328 Citations
51 Claims
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1. A device for delivering fluid to a patient, comprising:
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a) an exit port assembly adapted to connect to a transcutaneous patient access tool;
b) a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
c) at least one threaded lead screw received in the reservoir and extending towards the outlet of the reservoir generally parallel with the side wall;
d) a plunger threadedly received on the lead screw such that rotating one of the lead screw and the plunger moves the plunger within the reservoir; and
e) a dispenser operatively coupled to one of the lead screw and the plunger for rotating one of the lead screw and the plunger. - 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)
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24. A device for delivering fluid to a patient, comprising:
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a) an exit port assembly adapted to connect to a transcutaneous patient access tool;
b) a reservoir including a side wall extending towards an outlet connected to the exit port assembly;
c) a plunger slidingly received within the side wall of the reservoir;
d) a shaft extending from the plunger, the shaft relatively incompressible along an axis of the shaft and bendable traverse to the axis; and
e) a dispenser operatively coupled to the shaft for causing movement of the shaft along the axis of the shaft.
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25. A device for delivering fluid to a patient, comprising:
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a) an exit port assembly adapted to connect to a transcutaneous patient access tool;
b) a reservoir including an outlet connected to the exit port assembly;
c) a plunger movably received in the reservoir for forcing fluid through the outlet upon moving within the reservoir;
d) a dispenser for moving the plunger within the reservoir;
e) a local processor connected to the dispenser and programmed to cause the dispenser to move the plunger based on flow instructions;
f) a wireless receiver connected to the local processor for receiving flow instructions from a separate, remote control device and delivering the flow instructions to the local processor; and
g) a housing containing the exit port assembly, the reservoir, the dispenser, the local processor, and the wireless receiver;
wherein the housing is free of user input components for providing flow instructions to the local processor. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A device for delivering fluid to a patient, comprising:
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a) an exit port assembly adapted to connect to a transcutaneous patient access tool;
b) a reservoir including an outlet connected to the exit port assembly;
c) a plunger movably received in the reservoir for forcing fluid through the outlet to the exit port assembly upon moving within the reservoir;
d) a dispenser for moving the plunger within the reservoir;
e) a local processor connected to the dispenser and programmed to cause a flow of fluid to the exit port assembly based upon flow instructions, and further programmed to provide flow information;
f) a wireless transmitter connected to the local processor for transmitting the flow information from the local processor to a separate, remote control device; and
g) a housing containing the exit port assembly, the reservoir, the dispenser, the local processor, and the wireless transmitter;
wherein the housing is free of user output components for providing the flow information from the local processor to a user. - View Dependent Claims (50)
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51. A system for delivering a fluid to a patient, comprising:
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a) a fluid delivery device for attachment to a skin surface of a patient and including, an exit port assembly adapted to connect to a transcutaneous patient access tool, a reservoir including an outlet connected to the exit port assembly, a plunger movably received in the reservoir for forcing fluid through the outlet to the exit port assembly upon moving within the reservoir, a dispenser for moving the plunger within the reservoir, a local processor connected to the dispenser and programmed to cause a flow of fluid to the exit port assembly based at least in part on received flow instructions, and further programmed to provide flow information, a wireless receiver connected to the local processor for receiving the flow instructions and delivering the flow instructions to the local processor, a wireless transmitter connected to the local processor for transmitting the flow information from the local processor, and a housing containing the exit port assembly, the dispenser, the local processor, the wireless receiver, and the wireless transmitter, wherein the housing is free of user input components for providing flow instructions to the local processor; and
b) a remote control device separate from the fluid delivery device and including, user input components for receiving user inputs, user output components for providing user outputs, a remote processor connected to the user input components and programmed to provide the flow instructions based on the user inputs, and connected to the user output components to provide user outputs based upon the flow information, a wireless transmitter connected to the remote processor for transmitting the flow instructions to the receiver of the fluid delivery device, and a wireless receiver connected to the remote processor for receiving the flow information from the transmitter of the fluid delivery device.
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Specification