US 2010/0300451 A1Published application

Punch Dilator

OwnerNathan C. Griffith, Michael A. Kenowski +2inventors

InventorsNathan C. Griffith, Michael A. Kenowski, Sam C. Chan, James F. Schumacher

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Abstract

There is provided a device for performing an initial piercing and dilating of a patient's trachea. The device has a needle within and extending beyond a sheath which in turn is within and extends beyond an introducer dilator. After the needle is used to pierce the trachea, it may be removed and a guide wire (J-wire) inserted through the introducer dilator and sheath in its place. The sheath is slidable within the introducer dilator once the needle is removed. The introducer dilator is then moved forward, into the site of the initial piercing to expand it. As the introducer dilator is moved forward, the sheath may remain stationary, sliding within the introducer dilator and thus reducing trauma to the stoma site.

Claims13

Dependent claims

A punch dilator device comprising a needle, a sheath and an introducer dilator;

the sheath having a canulla running its entire axial length so that the needle may be inserted in a proximal end of the sheath, extend through the sheath and out a distal end of the sheath;
the sheath being inserted into the introducer dilator and extending distally beyond the end of the introducer dilator;
the introducer dilator having an internal cavity extending along an axial dimension, wherein the cavity is wider than the sheath so as to allow the sheath to move from side to side within the introducer dilator when the needle is not present, the introducer dilator having distal and proximal ends with openings large enough for the sheath to pass through lengthwise;
wherein the needle provides resistance to the movement of the sheath when the needle is positioned within the sheath in the introducer dilator and removal of the needle from the sheath and introducer dilator eliminates resistance to movement of the sheath within the introducer dilator and allows the sheath to slide within the introducer dilator along the introducer dilator's axial dimension and to move from side to side within the introducer dilator.

1 more element

Dependencies are inferred from the claim text.