Short-Bevel Non-Coring Needle
First Claim
1. A non-coring needle, comprising:
- a cannula that terminates at a sharpened distal tip, the cannula defining a lumen that terminates at a distal opening, the cannula including a proximal portion and a distal portion, wherein;
a distal portion of the cannula is disposed in a bent configuration with respect to the proximal portion of the cannula, the distal portion defining a bevel face extending proximally from the distal tip, the bevel face including the distal opening of the lumen, the bevel face defining an open angle of at least about one degree with respect to a line parallel to a longitudinal axis of the proximal portion of the cannula; and
at least a proximal half of a perimeter of the distal opening on the bevel face includes a dulled surface so as to prevent coring by the distal opening perimeter.
1 Assignment
0 Petitions
Accused Products
Abstract
A non-coring needle for use in accessing an implanted medical device is disclosed. The non-coring needle is configured so as to include a compact bevel face relative to standard non-coring needles. In one embodiment, the non-coring needle comprises a hollow cannula that defines a lumen and terminates at a sharpened distal tip. The cannula includes a proximal portion and a bent distal portion. The distal portion defines a bevel face extending proximally from the distal tip, and the bevel face includes the lumen distal opening. The bevel face defines an open angle of at least about one degree with respect to a longitudinal axis of the proximal portion of the cannula. The bevel face is also laterally offset from the proximal portion of the cannula by an offset distance of no more than about 0.010 inch. A portion of the bevel face is dulled to prevent access port septum coring.
40 Citations
19 Claims
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1. A non-coring needle, comprising:
a cannula that terminates at a sharpened distal tip, the cannula defining a lumen that terminates at a distal opening, the cannula including a proximal portion and a distal portion, wherein; a distal portion of the cannula is disposed in a bent configuration with respect to the proximal portion of the cannula, the distal portion defining a bevel face extending proximally from the distal tip, the bevel face including the distal opening of the lumen, the bevel face defining an open angle of at least about one degree with respect to a line parallel to a longitudinal axis of the proximal portion of the cannula; and at least a proximal half of a perimeter of the distal opening on the bevel face includes a dulled surface so as to prevent coring by the distal opening perimeter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A Huber-type needle, comprising:
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a hollow cannula including a substantially straight proximal portion and a bent distal portion, the bent distal portion defining a bevel face, the bevel face including a distal opening of the cannula, the bevel face defining an open angle of at least about one degree with respect to a line parallel to a longitudinal axis of the proximal portion of the cannula, wherein the bevel face is laterally offset from the proximal portion of the cannula by an offset distance of no more than about 0.010 inch. - View Dependent Claims (11, 12, 13)
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14. An infusion set, comprising:
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a needle hub; an extension leg extending from the hub in a first direction; and a needle extending from the hub in a second direction, the needle comprising; a hollow cannula including a substantially straight proximal portion and a bent distal portion, the bent distal portion defining a bevel face, the bevel face including a distal opening of the cannula, the bevel face defining an open angle of at least about two degrees with respect to a line parallel to a longitudinal axis of the proximal portion of the cannula, wherein all portions of the bevel face are laterally offset from the proximal portion of the cannula by an offset distance of no more than about 0.010 inch. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification