Endoscopic surgical blade and method of use thereof

Inventors

Mirza, Ather • Mirza, Romi

Assignees

A M Surgical Inc

Abstract

An endoscopic surgical blade having a low-profile design, with an upper cutting surface and a lower cutting surface at its distal end and having a non-cutting radiused surface at the top end of the upper cutting surface, and the upper cutting surface and lower cutting surface meet at a crotch therebetween is disclosed. The blade is part of an endoscopic knife assembly which also contains a hollow knife tube hollow that allows the insertion of an endoscope for viewing of the surgical procedure. The endoscopic knife assembly can be used for in endoscopic surgery by insertion of the assembly through a slotted cannula. A method for a performing an operative procedure on a target tissue in a subject using the endoscopic knife assembly having a low-profile blade with an upper cutting surface and a lower cutting surface is also described.

Core Innovation

The disclosed invention relates to a low-profile surgical blade configured for endoscopic use. The blade includes a proximal end and a distal end with an upper cutting surface and a lower cutting surface at the distal end that meet at a crotch, together with a non-cutting radiused surface at a top end of the upper cutting surface and a horizontal mounting surface at the lower edge.

The blade includes a notch on the lower edge that is in contact with a surgical tube, where the notch is concave and substantially crescent-shaped. The notch is recessed from the horizontal mounting surface and into a body of the blade, and the blade is sized to fit at a tip of an endoscope.

In a low-profile endoscopic surgical assembly, the invention combines a surgical tube, an endoscope, and a blade. The blade has a proximal main body and a distal end, with the upper and lower cutting surfaces meeting at a crotch and with a non-cutting radiused surface at the top end of the upper cutting surface. The blade further includes a horizontal mounting surface for laying the blade onto a surface of the surgical tube, and a non-cutting top edge forming an angle with respect to the horizontal mounting surface.

The blade geometry supports assembly with the surgical tube through a concave, substantially crescent-shaped notch that is recessed from the horizontal mounting surface and into the proximal main body. The assembly is described as an endoscopic knife assembly and instrument kit for uniportal procedures, including trigger finger release and pulley division from the blade and arthroscope perspective, with generally described blade-and-tube geometry enabling direct visualization.

Claims Coverage

The partial content identifies two independent claims. Across the independent claims, the core inventive subject matter is concentrated into blade geometry sized for an endoscope tip, including an upper and lower cutting surface meeting at a crotch with a non-cutting radiused surface, and a concave substantially crescent-shaped notch recessed for contact with a surgical tube, together with assembly into a low-profile endoscopic surgical assembly including a surgical tube and endoscope.

Across the independent claims, the coverage is directed to a low-profile blade and endoscopic assembly defined by upper and lower cutting surfaces meeting at a crotch, a non-cutting radiused surface at the top of the upper cutting surface, and a concave, substantially crescent-shaped notch recessed into the blade for contact with a surgical tube, with the blade sized to fit at the endoscope tip and mounted via a horizontal mounting surface in a surgical tube/endoscope assembly.

Stated Advantages

Documented Applications