Cannula insertion device and related methods
First Claim
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1. A cannula insertion device comprising:
- a housing defining a frustoconical opening for receiving therethrough a cannula, a slot for receiving a lug of the cannula, and further defining a channel;
a cannula forming a lumen and comprising a lug adapted to mate with the slot, a frustoconical base adapted to mate with the housing frustoconical opening, the base defining an internal chamber in fluidic communication with the lumen, wherein the cannula is adapted for self-aligning sliding movement within the housing from a retracted position to an extended position; and
a needle disposed in the lumen when the cannula is in the retracted position, wherein;
when the cannula is in the retracted position, the lumen is located remotely from the channel and the channel is in fluidic communication with the housing frustoconical opening which is in fluidic communication with an outside environment; and
when the cannula is in the extended position, the lumen is in fluidic communication with the channel due to mating of the lug with the slot without having to separately connect a tube thereto, and the channel is no longer in fluidic communication with the housing frustoconical opening.
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Abstract
A cannula insertion device includes a housing defining an opening for receiving therethrough a cannula and further defining a channel, and a cannula forming a lumen, the cannula adapted for sliding movement within the housing from a retracted position to an extended position. When the cannula is in the retracted position, the lumen is located remotely from the channel and the channel is in fluidic communication with the opening. When the cannula is in the extended position, the lumen is in fluidic communication with the channel.
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Citations
16 Claims
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1. A cannula insertion device comprising:
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a housing defining a frustoconical opening for receiving therethrough a cannula, a slot for receiving a lug of the cannula, and further defining a channel; a cannula forming a lumen and comprising a lug adapted to mate with the slot, a frustoconical base adapted to mate with the housing frustoconical opening, the base defining an internal chamber in fluidic communication with the lumen, wherein the cannula is adapted for self-aligning sliding movement within the housing from a retracted position to an extended position; and a needle disposed in the lumen when the cannula is in the retracted position, wherein; when the cannula is in the retracted position, the lumen is located remotely from the channel and the channel is in fluidic communication with the housing frustoconical opening which is in fluidic communication with an outside environment; and when the cannula is in the extended position, the lumen is in fluidic communication with the channel due to mating of the lug with the slot without having to separately connect a tube thereto, and the channel is no longer in fluidic communication with the housing frustoconical opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of inserting a cannula, the method comprising the steps of:
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providing a housing defining a frustoconical opening for receiving therethrough a cannula, a slot for receiving a lug of the cannula, and further defining a channel; providing a cannula forming a lumen with a needle disposed therein, the cannula comprising a lug adapted to mate with the slot, a frustoconical base adapted to mate with the housing frustoconical opening, the base defining an internal chamber in fluidic communication with the lumen, wherein the cannula is adapted for self-aligning sliding movement within the housing from a retracted position to an extended position; and extending the cannula from the retracted position, in which the lumen is located remotely from the channel and the channel is in fluidic communication with the housing frustoconical opening which is in fluidic communication with an outside environment, to the extended position, in which the lumen is in fluidic communication with the channel due to mating of the lug with the slot without having to separately connect a tube thereto, and the channel is no longer in fluidic communication with the housing frustoconical opening. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification