Access device
First Claim
1. An access device for placing a medical article within a body space, comprising:
- a needle including a needle body having a longitudinal axis with a distal tip and a needle hub from which the needle body extends;
a dilator including a dilator shaft and a dilator hub, the dilator shaft being disposed on and slideable along the needle body with the dilator hub being disposed distal of the needle hub;
a medical article comprising a tubular section and a hub, the tubular section being disposed on and slideable along the dilator with the hub being disposed distal of the dilator hub;
a track extending from the dilator hub in a proximal direction;
a first locking mechanism operably disposed between the track and the needle so as to selectively inhibit proximal movement of the needle relative to the dilator; and
a second locking mechanism operating between the needle hub and the dilator hub, wherein the second locking mechanism is unlocked by rotating the needle hub about the longitudinal axis of the needle.
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Accused Products
Abstract
An access device places a medical article within a body space of a patient. The device has a needle that includes an elongated body and a needle hub. The device further includes a dilator disposed on and slideable along the elongated body of the needle and a medical article. The medical article is disposed on and slideable along the dilator. A track extends in a proximal direction from the dilator. The needle hub slides along at least a portion of the track between a first position and a second position. The device further includes a locking mechanism operably disposed between the track and the needle hub so as to inhibit further axial movement of the needle in the proximal direction when the needle hub is in the second position.
275 Citations
19 Claims
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1. An access device for placing a medical article within a body space, comprising:
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a needle including a needle body having a longitudinal axis with a distal tip and a needle hub from which the needle body extends; a dilator including a dilator shaft and a dilator hub, the dilator shaft being disposed on and slideable along the needle body with the dilator hub being disposed distal of the needle hub; a medical article comprising a tubular section and a hub, the tubular section being disposed on and slideable along the dilator with the hub being disposed distal of the dilator hub; a track extending from the dilator hub in a proximal direction;
a first locking mechanism operably disposed between the track and the needle so as to selectively inhibit proximal movement of the needle relative to the dilator; anda second locking mechanism operating between the needle hub and the dilator hub, wherein the second locking mechanism is unlocked by rotating the needle hub about the longitudinal axis of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification