Patent ID: 9636257
Date: 2017-05-02
CPC Classifications: A61B,A61F

Claim:
1. A patient interface assembly for interfacing an ophthalmic intervention system with an eye of a patient, comprising: a housing; an optical lens coupled to the housing; an eye engagement assembly coupled to the housing, the eye engagement assembly comprising an inner seal and an outer seal, the eye engagement assembly adapted to be placed into contact with the eye of the patient by sealably engaging the eye with the inner and outer seals, thereby defining a vacuum zone between the inner and outer seals when placed into contact with the eye; and a tissue migration bolster structure positioned between the inner seal and outer seal and configured to apply a resisting load against portions of the eye in the vacuum zone which are capable of distending upon application of a vacuum load, wherein one or more surfaces of the tissue migration bolster structure occupies a majority of a surface area defined between the inner and outer seal.