Methods and devices for soft tissue dissection

摘要

A differential dissecting instrument for differentially dissecting complex tissue is disclosed. The differential dissecting instrument comprises a handle and an elongate member having a first end and a second end, wherein the first end is connected to the handle. The differential dissecting instrument comprises a differential dissecting member configured to be rotatably attached to the second end and further comprises at least one tissue engaging surface. The differential dissecting instrument comprises a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation, thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue. The at least one tissue engaging surface is configured to selectively engage the complex tissue such that the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue.

主权项

1. A differential dissecting instrument for differentially dissecting complex tissue comprising:
a handle; an elongate member having a first end and a second end, the first end connected to the handle; a differential dissecting member configured to be rotatably attached to the second end, the differential dissecting member comprising at least one tissue engaging surface; a mechanism configured to mechanically rotate the differential dissecting member around an axis of rotation thereby causing the at least one tissue engaging surface to move in at least one direction against the complex tissue; wherein the at least one tissue engaging surface is configured to selectively engage the complex tissue such that when the differential dissecting member is pressed into the complex tissue, the at least one tissue engaging surface moves across the complex tissue and the at least one tissue engaging surface disrupts at least one soft tissue in the complex tissue, but does not disrupt firm tissue in the complex tissue, wherein the differential dissecting member has a first end and a second end; wherein the first end of the differential dissecting member is configured to be directed away from the complex tissue and is rotatably engaged with the mechanism such that the differential dissecting member and thus the second end of the differential dissecting member is rotated by the mechanism; and wherein the second end of the differential dissecting member is configured to be directed toward the complex tissue, the second end of the differential dissecting member comprising a semi-ellipsoid shape defined by three orthogonal semi-axes, the three orthogonal semi-axes comprising a major semi-axis A, a first minor semi-axis B, and a second semi-minor axis C, wherein the major semi-axis A is perpendicular to the axis of rotation, the second semi-minor axis C is parallel to the axis of rotation, and the first minor semi-axis B is perpendicular to both the major semi-axis A and the second semi-minor axis C.