Catheter systems having flow restrictors
First Claim
1. A medical catheter comprising:
- a lumen comprising an interior lumen surface;
a flow restrictor located within the lumen, the flow restrictor comprising a restrictor body located within the lumen;
a channel located between an outer surface of the restrictor body and the interior lumen surface of the lumen, wherein the channel extends from an upstream end of the restrictor body to a downstream end of the restrictor body, such that fluid passing through the lumen flows through the channel when the fluid is delivered to the flow restrictor below a selected pressure.
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Accused Products
Abstract
Catheter systems including one or more flow restrictors are disclosed. The catheter systems may include two or more delivery branches. The delivery branches may be connected to a supply catheter section using a branching catheter connector that may include one or more flow restrictors. The flow restrictors may include a restrictor body located within a lumen with a channel located between the restrictor body and interior surface of the lumen, the channel restricting flow through the lumen past the flow restrictor. The channel may be defined by a groove formed in the restrictor body and/or the interior surface of the lumen. Methods of providing pressure relief by flowing fluid past a flow restrictor are also disclosed.
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Citations
28 Claims
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1. A medical catheter comprising:
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a lumen comprising an interior lumen surface;
a flow restrictor located within the lumen, the flow restrictor comprising a restrictor body located within the lumen;
a channel located between an outer surface of the restrictor body and the interior lumen surface of the lumen, wherein the channel extends from an upstream end of the restrictor body to a downstream end of the restrictor body, such that fluid passing through the lumen flows through the channel when the fluid is delivered to the flow restrictor below a selected pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A branching catheter connector for use in a branched medical catheter, the connector comprising:
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an inlet port;
two or more outlet ports in fluid communication with the inlet port;
wherein each of the outlet ports comprises;
an outlet port lumen comprising an interior surface;
a flow restrictor located within the outlet port lumen, the flow restrictor comprising a restrictor body located within the outlet port lumen;
a channel located between an outer surface of the restrictor body and the interior surface of the outlet port lumen, wherein the channel extends from an upstream end of the restrictor body to a downstream end of the restrictor body, such that fluid passing through the outlet port lumen flows through the channel when the fluid is delivered to the flow restrictor below a selected pressure. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A medical catheter system comprising:
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a lumen;
a flow restrictor located within the lumen, the flow restrictor comprising one or more capillaries within the lumen, wherein each capillary of the one or more capillaries comprises a first opening at an upstream end of the flow restrictor and a second opening at a downstream end of the flow restrictor, wherein each capillary of the one or more capillaries comprises one or more coils within the lumen, and wherein fluid passing through the lumen from the upstream end to the downstream end of the flow restrictor flows through the one or more capillaries when the fluid is delivered to the upstream end of the flow restrictor below a selected pressure. - View Dependent Claims (27, 28)
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Specification