Patent ID: 9743950
Date: 2017-08-29
CPC Classifications: A61B

Claim:
1. A surgical instrument for advancement over a preinserted guidewire as used during performance of the Seldinger or modified Seldinger techniques, the surgical instrument comprising: a rigid body having a proximal end, a distal end, a top edge, a bottom edge, a left side, and a right side, wherein the top edge is opposite the bottom edge, and wherein the left side is opposite the right side; a blade having a cutting edge formed at the distal end of the body along the bottom edge of the body extending to a tip of the body, the cutting edge extending a length from the bottom edge of the body to the tip at a fixed angle, wherein the tip of the rigid body and a tip of the blade end in close proximity to one another; and a closed rigid cylindrical tube immovably affixed to only the top edge of the body at the distal end of the body in close proximity to the tip of the body, wherein the closed rigid cylindrical tube is configured to be threaded over the preinserted guidewire by inserting the preinserted guidewire into a proximal end of the closed rigid cylindrical tube near the tip of the blade and the surgical instrument is advanced over the preinserted guidewire to a skin surface to perform a dermototomy incision during the Seldinger or modified Seldinger techniques using the cutting edge of the blade, wherein the tip of the blade extends past a proximal end and a distal end of the closed rigid cylindrical tube, wherein the rigid body is configured to be encased within a scalpel sheath such that the rigid body is movable relative to the scalpel sheath between a closed position retracted within the scalpel sheath to an open position at least partially advanced relative to the scalpel sheath.