Fluid injection device
First Claim
1. A fluid injection device for use with an intravascular catheter, the catheter having a proximal portion, a distal portion, and a lumen extending therethrough, the fluid injection device comprising;
- a manifold disposed at the proximal portion of the catheter;
a fluid inlet conduit disposed at the proximal portion of the catheter, the inlet conduit having a proximal portion and distal portion, the proximal portion of the inlet conduit being in fluid communication with a fluid source, the distal portion of the conduit in fluid communication with the catheter lumen and disposed distally of the manifold;
means for injecting a bolus of fluid from the fluid inlet conduit into the catheter lumen operatively connected to said fluid inlet conduit; and
means for preventing backflow of the fluid bolus.
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0 Petitions
Accused Products
Abstract
A catheter for use in vasculature or other body lumen includes a fluid injection bypass tube, leading to a elastically compressible pump bulb. Upon compression of the pump bulb, fluid such as contrast solution is injected through a one-way valve, into the catheter manifold lumen, and ultimately to the distal end of the catheter lumen, and into the patient vasculature. The one-way valve between the pump bulb and the catheter lumen has a threshold pressure to prevent unintended aspiration of fluid from the pump bulb during aspiration of fluid from the catheter itself.
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Citations
36 Claims
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1. A fluid injection device for use with an intravascular catheter, the catheter having a proximal portion, a distal portion, and a lumen extending therethrough, the fluid injection device comprising;
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a manifold disposed at the proximal portion of the catheter;
a fluid inlet conduit disposed at the proximal portion of the catheter, the inlet conduit having a proximal portion and distal portion, the proximal portion of the inlet conduit being in fluid communication with a fluid source, the distal portion of the conduit in fluid communication with the catheter lumen and disposed distally of the manifold;
means for injecting a bolus of fluid from the fluid inlet conduit into the catheter lumen operatively connected to said fluid inlet conduit; and
means for preventing backflow of the fluid bolus. - 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. An intravascular catheter comprising:
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an elongate tubular body having a proximal portion, a distal portion, and a catheter lumen extending therethrough;
a fluid inlet conduit disposed at the proximal portion of the tubular body, the inlet conduit having a proximal portion and distal portion, the proximal portion of the inlet conduit being in fluid communication with a fluid source, the distal portion of the inlet conduit in fluid communication with the catheter lumen;
a pump for injecting a bolus of fluid from the fluid inlet conduit into the catheter lumen; and
a one-way valve in the distal portion of the inlet fluid conduit for preventing backflow of the fluid bolus from the catheter lumen. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An intravascular catheter comprising:
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an elongate tubular body having a proximal portion, a distal portion, and a catheter lumen extending therethrough; and
a manifold having a proximal and distal end, disposed proximally of the proximal portion of the tubular body, the manifold comprising;
an elongate tubular body having an exterior wall, with a manifold lumen extending therethrough, the manifold lumen having an interior wall;
a proximal opening at the proximal end of the manifold, the proximal opening being in fluid communication with the manifold lumen;
a distal opening at the distal end of the manifold, the distal opening being in fluid communication with both the manifold lumen and with the catheter lumen;
a fluid input opening disposed in the exterior wall of the manifold, the fluid opening accepting a contrast solution supply line;
a fluid bypass lumen disposed between the exterior wall of the manifold and the interior wall of the manifold lumen, the fluid bypass lumen being in fluid communication with the fluid input opening;
an elastically compressible pump reservoir having an interior, an exterior, an inlet port, and an outlet port, the inlet port being in fluid communication with the fluid bypass lumen, and the outlet port being in fluid communication with the catheter lumen;
a one-way inlet valve disposed adjacent the pump reservoir inlet port, and being disposed so as to not allow fluid to flow from the pump reservoir to the fluid bypass lumen; and
a one-way outlet valve, disposed adjacent the pump reservoir outlet port, and being disposed so as to not allow fluid to flow from the catheter lumen to the pump reservoir. - View Dependent Claims (36)
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Specification