Optical energy-based methods and apparatus for tissue sealing

摘要

Optical energy-based methods and apparatus for sealing vascular tissue involves deforming vascular tissue to bring different layers of the vascular tissue into contact each other and illuminating the vascular tissue with a light beam having at least one portion of its spectrum overlapping with the absorption spectrum of the vascular tissue. The apparatus may include two deforming members configured to deform the vascular tissue placed between the deforming members. The apparatus may also include an optical system that has a light source configured to generate light, a light distribution element configured to distribute the light across the vascular tissue, and a light guide configured to guide the light from the light source to the light distribution element. The apparatus may further include a cutting member configured to cut the vascular tissue and to illuminate the vascular tissue with light to seal at least one cut surface of the vascular tissue.

主权项

1. An energy-based instrument for sealing vascular tissue, comprising:
a first deforming member and a second deforming member configured to move relative to one another about a pivot from a first position wherein the first deforming member and second deforming member are disposed in spaced relation relative to one another to a second position wherein the first deforming member and the second deforming member cooperate to deform vascular tissue; and an optical system configured to illuminate a portion of vascular tissue with light to seal vascular tissue, the optical system comprising:
a light source configured to generate light;a light distribution element configured to distribute the light over a portion of vascular tissue;a light guide configured to guide the light from the light source to the light distribution element; andan optical reflective material, wherein the light distribution element is disposed in only the first deforming member, and wherein the second deforming member includes the optical reflective material, which is configured to reflect light that has passed through vascular tissue, so that the light passes through vascular tissue a second time.