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US 2004/0167472 A1Published application
Catheter and method of making a catheter
OwnerGlade Harold Howell, Cynthia Anne Castroinventors
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OwnerGlade Harold Howell, Cynthia Anne Castroinventors
Estimating the term…
An over-the-needle catheter assembly includes a tube made of a flexible, biocompatible material. The tube has a proximal portion, a distal portion and a catheter tip positioned on the distal portion remote from the proximal portion. A lumen extends through the tube, substantially co-axially with the tube, from the proximal portion, through the distal portion and through to the catheter tip. The lumen cross-section at the proximal portion is larger than the cross-section at the distal portion. A shoulder is disposed in the lumen between the distal portion and the proximate portion. A catheter land, having a predetermined length, is defined as the portion of the lumen disposed in the distal portion of the tube between the shoulder and the distal end. A needle is disposed in the lumen and has a substantially circular cross-section. A discontinuity is located on the needle at a predetermined position with respect to the needle tip. The distance between the distal edge of the discontinuity and the needle tip is substantially equal to the length of the catheter land. The discontinuity is sized such that it fits within the lumen at the proximal portion but does not fit within the lumen at the distal portion.
An over-the-needle catheter assembly including:
An over-the-needle catheter assembly for insertion into a patient, including:
9 The over-the-needle catheter assembly of claim 8 wherein the needle includes a discontinuity and the predetermined length of the catheter land is determined based, at least in part, on the distance between the tip of a needle and a discontinuity on the needle.
13 The over-the-needle catheter of claim 8 wherein the tube has an axis and the shoulder is disposed at an angle of about 86 degrees with respect to the axis.
An intravenous catheter for use with a needle, including:
15 The catheter of claim 14 for use with a needle including a discontinuity, wherein the predetermined length of the catheter land is determined based, at least in part, on the distance between a tip of a needle and a discontinuity on the needle.
Dependencies are inferred from the claim text.