Dual source intravenous administration set having an intravenous pump
First Claim
Patent Images
1. An intravenous administration set comprising:
- means for connecting said set to a source of intravenous fluid;
a drip chamber connected to said connecting means;
a first tubing segment connected at one end to said drip chamber and at its other end to a first branch of a Y-site;
valve means associated with said first tubing segment and said Y-site for preventing flow through said first tubing segment when the pressure in said set at said Y-site is higher than the pressure in said first tubing segment, distal from said Y-site;
said Y-site having a second branch which includes means for connecting another administration set to said Y-site;
said Y-site having a third branch connected to one end of a second tubing segment;
said second tubing segment being adapted for connection at its other end to a patient'"'"'s blood vessel via a variable volume pump chamber;
said second tubing segment including a fluid reservoir segment which is adapted to receive and hold a volume of fluid which is approximately greater than the fluid capacity of the variable volume pump chamber and is available to be drawn into the variable volume pump chamber when the pump chamber is being filled, said reservoir segment having flexible walls so that said reservoir segment will contract when it is being emptied and expand when it is being filled.
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Abstract
The present invention provides an intravenous administration set 10 having a primary container 22 and a secondary container 24, each containing fluid, and a pump 20. The primary container 22 and secondary container 24 are joined into a single flow path by a Y-site 50. A check valve 42 is provided between the primary container 22 and the Y-site 50. A fluid capacitor 60 is provided on the single flow path between the Y-site 50 and the pump 20 to repenish displaced fluid in the pump 20.
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Citations
14 Claims
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1. An intravenous administration set comprising:
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means for connecting said set to a source of intravenous fluid; a drip chamber connected to said connecting means; a first tubing segment connected at one end to said drip chamber and at its other end to a first branch of a Y-site; valve means associated with said first tubing segment and said Y-site for preventing flow through said first tubing segment when the pressure in said set at said Y-site is higher than the pressure in said first tubing segment, distal from said Y-site; said Y-site having a second branch which includes means for connecting another administration set to said Y-site; said Y-site having a third branch connected to one end of a second tubing segment; said second tubing segment being adapted for connection at its other end to a patient'"'"'s blood vessel via a variable volume pump chamber; said second tubing segment including a fluid reservoir segment which is adapted to receive and hold a volume of fluid which is approximately greater than the fluid capacity of the variable volume pump chamber and is available to be drawn into the variable volume pump chamber when the pump chamber is being filled, said reservoir segment having flexible walls so that said reservoir segment will contract when it is being emptied and expand when it is being filled. - View Dependent Claims (2, 3, 4, 5)
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6. An intravenous administration set comprising:
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means for connecting said set to a source of intravenous fluid; a Y-site defining a first branch, a second branch, and a third branch, said second branch including means for connecting another administration set to said Y-site; a first tubing segment connected at one end to said means for connecting said set to a source of intravenous fluid and at a second end to said first branch of the Y-site; a second tubing segment connected at one end to said third branch of the Y-site and having a second end which is adapted for connection to a patient'"'"'s blood vessel via a variable volume pump diameter; said second tubing segment including two sheets of flexible material defining edges and bounded together at the edges to define a fluid reservoir segment in fluid communication with the second tubing segment, such that said fluid reservoir receives and holds a volume of fluid that is available to be drawn into the variable volume pump chamber when the pump chamber is being filled. - View Dependent Claims (7, 8, 9, 10)
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11. An intravenous administration set comprising:
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means for connecting said set to a source of intravenous fluid; a Y-site defining a first branch, a second branch, and a third branch, said second branch including means for connecting another administration set to said Y-site; a first tubing segment connected at one end to said means for connecting said set to a source of intravenous fluid and at a second end to said first branch of the Y-site; a second tubing segment connected at one end to said third branch of the Y-site and having a second end which is adapted for connection to a patient'"'"'s blood vessel via a variable volume pumping chamber; said second tubing segment including a length of expandable diameter tubing which defines a fluid reservoir segment, said fluid reservoir segment having a fluid capacity that is approximately greater than the fluid capacity of the pump chamber to which said set is adapted to be attached such that said fluid reservoir receives and holds a volume of fluid that is available to be drawn into the variable volume pump chamber when the pump chamber is being filled. - View Dependent Claims (12, 13, 14)
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Specification