FLOW RESTRICTION SYSTEM AND METHOD FOR PATIENT INFUSION DEVICE
First Claim
1. A device for delivering fluid to a patient, comprising:
- A) a flow path including, an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly; and
B) a flow restriction system including, an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly;
wherein, the flow restrictor of the flow restriction system comprises an outlet plug removably connected to the exit port assembly to prevent fluid from exiting the flow path through the exit port assembly;
the exit port assembly includes a transcutaneous patient access tool comprising a needle having a distal end for insertion into a patient and the outlet plug comprises;
a sleeve having a first end removably received in a substantially fluid-tight manner on the distal end of the needle; and
a cap connected to a second end of the sleeve.
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Accused Products
Abstract
A device for delivering fluid, such as insulin for example, to a patient. The device includes a flow path having an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly. The device also includes a flow restriction system having an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly. Among other features and advantages, the flow restriction system of the present invention allows the flow path of the fluid delivery device to be purged of air, or “primed” prior to operation, such that desired volumes of fluid can be accurately delivered by the device.
518 Citations
21 Claims
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1. A device for delivering fluid to a patient, comprising:
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A) a flow path including, an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly; and
B) a flow restriction system including, an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly;
wherein, the flow restrictor of the flow restriction system comprises an outlet plug removably connected to the exit port assembly to prevent fluid from exiting the flow path through the exit port assembly;
the exit port assembly includes a transcutaneous patient access tool comprising a needle having a distal end for insertion into a patient and the outlet plug comprises;
a sleeve having a first end removably received in a substantially fluid-tight manner on the distal end of the needle; and
a cap connected to a second end of the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device for delivering fluid to a patient, comprising:
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A) a flow path including, an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly; and
B) a flow restriction system including, an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly;
wherein, the flow restrictor of the flow restriction system comprises an outlet plug removably connected to the exit port assembly to prevent fluid from exiting the flow path through the exit port assembly; and
the outlet plug further comprises a needle septum.
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14. A device for delivering fluid to a patient, comprising:
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A) a flow path including, an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly; and
B) a flow restriction system including, an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly;
wherein, the flow restrictor of the flow restriction system comprises an outlet plug removably connected to the exit port assembly to prevent fluid from exiting the flow path through the exit port assembly; and
the outlet plug includes a pressure relief valve actuable upon a pressure within the flow path exceeding a desired maximum level of flow path pressure.
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15. A device for delivering fluid to a patient, comprising:
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A) a flow path including, an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly; and
B) a flow restriction system including, an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly;
wherein, the flow restrictor of the flow restriction system comprises an outlet plug removably connected to the exit port assembly to prevent fluid from exiting the flow path through the exit port assembly; and
further comprising;
a housing containing the flow path, wherein the exit port assembly extends at least partly through a port in the housing;
an adhesive layer provided in at least one continuous band on an exterior surface of the housing surrounding the port of the housing; and
a protective layer removably covering the adhesive layer, wherein the outlet plug of the flow restriction system is secured to the protective layer so that removal of the protective layer removes the outlet plug from the exit port assembly.
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16. A device for delivering fluid to a patient, comprising:
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A) a flow path including, an exit port assembly adapted to connect to a transcutaneous patient access tool, and a reservoir connected to the exit port assembly; and
B) a flow restriction system including, an air removal filter communicating with the flow path and allowing air to exit the flow path and preventing fluid from exiting the flow path, and a flow restrictor positioned within the flow path between the air removal filter and the exit port assembly;
wherein, the flow restrictor of the flow restriction system comprises an outlet plug removably connected to the exit port assembly to prevent fluid from exiting the flow path through the exit port assembly; and
further comprising a switch arranged to be closed upon removal of the outlet plug from the exit port assembly. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification