Vascular access device
First Claim
1. An access device for placing a medical article within a body space, the access device comprising:
- a needle comprising a fenestration near a distal end of the needle;
a dilator disposed about the needle, the dilator comprising a dilator hub and a dilator body, a distal end of the dilator body positioned against the needle and distal to the fenestration; and
an inner member coaxially disposed between the needle and the dilator, a distal end of the inner member positioned against the needle and distal to the dilator hub;
wherein a space at least partially defined by an outer surface of the needle and the inner member defines a flash channel in fluid communication with the fenestration to allow bodily fluid to flow from an interior of the needle through the fenestration to the flash channel.
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Accused Products
Abstract
An access device for placing a medical article within a body space includes a needle, a dilator, and a sheath. The dilator can be coaxially and slideably disposed about the needle, and the sheath can be coaxially and slideably disposed about the dilator. The access device can further include a inner member coaxially disposed between the needle and dilator. The needle can include a fenestration in fluid communication with a space between the needle and inner member. When the needle punctures a blood vessel, the fenestration allows blood to flow into the space between the needle and inner member to provide a visual indicator to a physician or healthcare professional that the needle is in a vessel.
311 Citations
17 Claims
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1. An access device for placing a medical article within a body space, the access device comprising:
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a needle comprising a fenestration near a distal end of the needle; a dilator disposed about the needle, the dilator comprising a dilator hub and a dilator body, a distal end of the dilator body positioned against the needle and distal to the fenestration; and an inner member coaxially disposed between the needle and the dilator, a distal end of the inner member positioned against the needle and distal to the dilator hub; wherein a space at least partially defined by an outer surface of the needle and the inner member defines a flash channel in fluid communication with the fenestration to allow bodily fluid to flow from an interior of the needle through the fenestration to the flash channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An access device for placing a medical article within a body space, the access device comprising:
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a needle comprising a needle body and a fenestration, an outer surface of at least a portion of the needle body disposed at a radius r1 from a central longitudinal axis of the needle; a dilator comprising a dilator hub and a dilator body, an inside surface of at least a portion of the dilator body disposed at a radius r2 from a central longitudinal axis of the dilator, a distal end of the dilator body positioned against the needle body and distal to the fenestration; and an inner member comprising an inner member body having a body width, the body width being less than r2−
r1 such that the inner member can be positioned in a flash channel between the needle body and the dilator body, a distal end of the inner member body being positioned against the needle body and distal to the dilator hub. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification